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1

GEA Development Phases | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » GEA Development Phases Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home GEA Development Phases The information for this page was taken directly from Geothermal Reporting Terms and Definitions: A Guide to Reporting Resource Development Progress and Results to the Geothermal Energy Association (GEA, November 2010) Gea.jpg The Geothermal Energy Association's (GEA) Geothermal Reporting Terms and Definitions are a guideline for geothermal developers to use when submitting geothermal resource development information to GEA for public dissemination in its annual US Geothermal Power Production and Development

2

Category:GEA Development Phases | Open Energy Information  

Open Energy Info (EERE)

Phase III - Permitting and Initial Development Phase IV - Resource Production and Power Plant Construction Retrieved from "http:en.openei.orgwindex.php?titleCategory:G...

3

SaGea | Open Energy Information  

Open Energy Info (EERE)

SaGea SaGea Jump to: navigation, search Name SaGea Place Cagliari, Italy Zip 9125 Sector Solar Product Cagliari-based PV developer that designs, installs and maintains equipment for solar energy generation for both private and corporate users. Coordinates 39.214525°, 9.110492° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.214525,"lon":9.110492,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

4

GEA | OpenEI Community  

Open Energy Info (EERE)

GEA GEA Home Kyoung's picture Submitted by Kyoung(155) Contributor 14 October, 2013 - 20:19 Geothermal NEPA Workshop at GRC Categorical Exclusions CX Database EA EIS FONSI GEA GRC GRR NEPA On Tuesday, October 2, the Geothermal Technology Office and the National Renewable Energy Laboratory held a 1/2-day NEPA workshop. The workshop was held at the MGM Grand in Las Vegas, in conjunction with the GEA/GRC Tradeshow and Conference. Three presentations were given, describing the NEPA database and associated analysis that had been conducted in 2013. Files: application/vnd.openxmlformats-officedocument.presentationml.presentation icon 2. NEPA History - Presentation application/vnd.openxmlformats-officedocument.presentationml.presentation icon 3. Categorical Exclusions - Presentation

5

Hydrothermal industrialization: direct heat development. Final report  

Science Conference Proceedings (OSTI)

A description of hydrothermal resources suitable for direct applications, their associated temperatures, geographic distribution and developable capacity are given. An overview of the hydrothermal direct-heat development infrastructure is presented. Development activity is highlighted by examining known and planned geothermal direct-use applications. Underlying assumptions and results for three studies conducted to determine direct-use market penetration of geothermal energy are discussed.

Not Available

1982-05-01T23:59:59.000Z

6

GEA Group | Open Energy Information  

Open Energy Info (EERE)

Group Group Place Bochum, Germany Zip 44809 Sector Biofuels, Solar Product Bochum-based, engineering group specialising in process engineering and components for the food, pharmaceutical and petrochemical industries. GEA through its subsidiaries is involved in the solar and biofuels sector. Coordinates 51.485955°, 7.210866° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":51.485955,"lon":7.210866,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

7

GEA Caldemon formerly known as Caldemon Iberica | Open Energy Information  

Open Energy Info (EERE)

Caldemon formerly known as Caldemon Iberica Caldemon formerly known as Caldemon Iberica Jump to: navigation, search Name GEA Caldemon (formerly known as Caldemon Iberica) Place Spain Sector Solar Product GEA Caldemon manufacturers shell and tube heat exchangers and surface condensers, commonly used in solar thermal power plants. References GEA Caldemon (formerly known as Caldemon Iberica)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. GEA Caldemon (formerly known as Caldemon Iberica) is a company located in Spain . References ↑ "GEA Caldemon (formerly known as Caldemon Iberica)" Retrieved from "http://en.openei.org/w/index.php?title=GEA_Caldemon_formerly_known_as_Caldemon_Iberica&oldid=34572

8

Development of a Hydrothermal Spallation Drilling System for EGS Geothermal  

Open Energy Info (EERE)

Hydrothermal Spallation Drilling System for EGS Geothermal Hydrothermal Spallation Drilling System for EGS Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Development of a Hydrothermal Spallation Drilling System for EGS Project Type / Topic 1 Recovery Act: Enhanced Geothermal Systems Component Research and Development/Analysis Project Type / Topic 2 Drilling Systems Project Description Potter Drilling has recently demonstrated hydrothermal spallation drilling in the laboratory. Hydrothermal spallation drilling creates boreholes using a focused jet of superheated water, separating individual grains ("spalls") from the rock surface without contact between the rock and the drill head. This process virtually eliminates the need for tripping. Previous tests of flame-jet spallation achieved ROP of 50 ft/hr and higher in hard rock with minimal wear on the drilling assembly, but operating this technology in an air-filled borehole created challenges related to cuttings transport and borehole stability. The Potter Drilling system uses a water based jet technology in a fluid-filled borehole and as a result has the potential to achieve similarly high ROP that is uncompromised by stability or cuttings transport issues.

9

Hydrothermal industrialization electric-power systems development. Final report  

DOE Green Energy (OSTI)

The nature of hydrothermal resources, their associated temperatures, geographic locations, and developable capacity are described. The parties involved in development, required activities and phases of development, regulatory and permitting requirements, environmental considerations, and time required to complete development activities ae examined in detail. These activities are put in proper perspective by detailing development costs. A profile of the geothermal industry is presented by detailing the participants and their operating characteristics. The current development status of geothermal energy in the US is detailed. The work on market penetration is summarized briefly. Detailed development information is presented for 56 high temperature sites. (MHR)

Not Available

1982-03-01T23:59:59.000Z

10

An organized effort to develop the hydrothermal energy resource  

DOE Green Energy (OSTI)

As a response to America's need for alternate energy sources, the US Department of Energy has a Geothermal Program. Within this program is a Hydrothermal category. Currently, a wide range of tasks are being addressed as part of the Hydrothermal Program. The tasks include Industrialization, Reservoir Technology, Hard Rock Penetration and Conversion Technology. It is thought that successes already made in this program combined with upcoming successes will increase the likelihood of geothermal energy becoming a contributor to our nation's future energy needs. 4 refs.

Taylor, K.J.

1989-01-01T23:59:59.000Z

11

An Organized Effort to Develop the Hydrothermal Energy Resource  

DOE Green Energy (OSTI)

As a response to America's need for Alternate Energy sources, the U.S. Department of Energy has a Geothermal Program. Within this program is a Hydrothermal category. Currently, a wide range of tasks are being addressed as part of the Hydrothermal Program. The tasks include Industrialization, Reservoir Technology, Hard Rock Penetration and Conversion Technology. It is thought that successes already made in this program combined with upcoming successes will increase the likelihood of geothermal energy becoming a contributor to our nations future energy needs.

Taylor, Kenneth J.

1989-03-21T23:59:59.000Z

12

Case studies of low-to-moderate temperature hydrothermal energy development  

DOE Green Energy (OSTI)

Six development projects are examined that use low- (less than 90/sup 0/C (194/sup 0/F)) to-moderate (90 to 150/sup 0/C (194 to 302/sup 0/F)) temperature geothermal resources. These projects were selected from 22 government cost-shared projects to illustrate the many facets of hydrothermal development. The case studies describe the history of this development, its exploratory methods, and its resource definition, as well as address legal, environmental, and institutional constraints. A critique of procedures used in the development is also provided and recommendations for similar future hydrothermal projects are suggested.

Not Available

1981-10-01T23:59:59.000Z

13

Phase III - Permitting and Initial Development | Open Energy Information  

Open Energy Info (EERE)

III - Permitting and Initial Development III - Permitting and Initial Development Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home GEA Development Phase III: Permitting and Initial Development GEA Development Phases The Geothermal Energy Association's (GEA) Geothermal Reporting Terms and Definitions are a guideline for geothermal developers to use when submitting geothermal resource development information to GEA for public dissemination in its annual US Geothermal Power Production and Development Update. GEA's Geothermal Reporting Terms and Definitions serve to increase the consistency, accuracy, and reliability of industry information presented in the development updates. Phase I - Resource Procurement and Identification Phase II - Resource Exploration and Confirmation Phase III - Permitting and Initial Development

14

Recently developed well test insrumentation for low-to-moderate temperature hydrothermal reservoirs  

DOE Green Energy (OSTI)

The engineering drawings, assembly instructions, and recommended usage for several of the instruments developed for low and moderate temperature (< 150/sup 0/C) hydrothermal well testing are presented. Included are the drawings for: a downhole pressure and temperature instrument, a multi-conductor cablehead, a line driver to be used with the downhole pressure and temperature instrument, and a fluid-level detector.

Solbau, R.; Goranson, C.B.; Benson, S.M.

1981-08-01T23:59:59.000Z

15

GRC Annual Meeting and GEA Geothermal Energy Expo | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

GRC Annual Meeting and GEA Geothermal Energy Expo GRC Annual Meeting and GEA Geothermal Energy Expo GRC Annual Meeting and GEA Geothermal Energy Expo September 29, 2013 12:00AM EDT to October 2, 2013 12:00PM EDT "A Global Resource, from Larderello to Las Vegas" This year's GRC Annual Meeting and GEA Geothermal Energy Expo will take place at the MGM Grand Hotel and Casino in Las Vegas, Nevada. This four-day event is industry's largest annual gathering of leading geothermal energy scientists, producers, renewable energy industry stakeholders, regulators, utilities, and key associated business leaders. Last year, it hosted representatives from more than 39 countries. Participants from six continents were present. In 2013, an even broader attendance is anticipated. The GRC Annual Meeting will offer technical, policy, and market conference

16

Hydrothermal research and development assessment. Task force report: projections for electric systems  

DOE Green Energy (OSTI)

It is estimated that high temperature (greater than 150/sup 0/C or 300/sup 0/F) hydrothermal resources in the western United States have the potential for producing about 140,000 megawatts of electric power for 30 years. The objectives of the present analysis were to realistically evaluate the extent to which these resources might be utilized over the next 20 years, and to assess the probably impact of Federal programs on that utilization. The R and D assessment team interviewed industry personnel to determine the nature and the relative significance of investment decision criteria for developers and utilities. The results of these interviews were used to develop a probabilistic model to simulate the investment decision behavior of these two groups toward hydrothermal resources. Estimations of the characteristics of anticipated available resources (e.g., temperature, salinity, depth) and predictions of the geographic distribution of new resource discoveries were based upon the characteristics and distribution of known reservoirs. The impact of a minimal R and D program and the impact of expanded R and D program were estimated on the basis of its effect upon industry investment decision criteria (e.g., the cost of power). The Task Force estimates comparing three different scenarios: (1) no program, (2) minimal R and D, and (3) expanded R and D are presented.

Not Available

1982-05-01T23:59:59.000Z

17

Hydrothermal Processing  

DOE Green Energy (OSTI)

This chapter is a contribution to a book on Thermochemical Conversion of Biomass being edited by Prof. Robert Brown of Iowa State University. It describes both hydrothermal liquefaction and hydrothermal gasification of biomass to fuels.

Elliott, Douglas C.

2011-03-11T23:59:59.000Z

18

Hydrothermal research and development assessment. Task Force report: projections for direct-heat applications  

DOE Green Energy (OSTI)

Low and moderate temperature hydrothermal resources suitable for direct-heat applications have been identified in 37 states. The extent to which three resources might be used over the next 20 years were evaluated and the probable impact of Federal programs on hydrothermal resource utilization was assessed. The use types that comprise the bulk of the market were determined. Representative firms and municipalities were interviewed to determine their willingness to use hydrothermal energy, and to determine the investment decision criteria that would influence their actions. (MHR)

Not Available

1982-04-01T23:59:59.000Z

19

Acidization of a Direct Heat Hydrothermal Well and its Potential in Developing Additional Direct Heat Projects  

SciTech Connect

A matrix acid treatment on a limestone formation in a low temperature hydrothermal production well in South Dakota has resulted in a 40% increase in heat (BTU) available for use in space heating a hospital. The results of this experimental treatment on the Madison Limestone suggest a significant potential may exist for similar applications, particularly throughout the western United States. This paper presents the results of the acid treatment, suggests other possible areas for similar application, and analyzes the economics for successful treatments.

Dolenc, M.R.; Strawn, J. A.; Prestwich, S.M.

1981-01-01T23:59:59.000Z

20

A Cellular Automata Breccia Simulator (CABS) and its application to rounding in hydrothermal breccias  

Science Conference Proceedings (OSTI)

Dissolution processes are ubiquitous in surficial and hydrothermal environments. Solution breccias are formed when dissolution processes dominate and are widely observed in hydrothermal systems. Distinct fragment shapes develop during dissolution and ... Keywords: Breccias, Cellular automata, Hydrothermal alteration, Numerical modelling, Simulation

M. Lalonde; G. Tremblay; M. Jbrak

2010-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

1992, Texaco Inc. : US. EnerTech Environmental, I. Thewas also developed by EnerTech to prepare solid feedstock

He, Wei

2011-01-01T23:59:59.000Z

22

Recent Developments in Geology, Geochemistry and Geophysics Applied to Hydrothermal Reservoir Mapping and Monitoring  

DOE Green Energy (OSTI)

Progress in research and development of four of UURI's projects are reviewed in this paper. First, the development of chemical tracers has evolved to a field test in the Dixie Valley geothermal system in Nevada. Second, the measurement of in situ stress continues to demonstrate changes with location in the orientation of stress within active geothermal systems. Third, we continue to develop hydrologic models of geothermal systems based upon fluid inclusion measurements. Fourth, we are developing equipment that will allow testing of borehole to borehole and borehole to surface electrical resistivity techniques for locating fluid-filled fractures.

Moore, Joseph N.; Nielson, Dennis L.; Wright, Phillip M.

1989-03-21T23:59:59.000Z

23

Hydrothermal Energy Conversion Technology  

SciTech Connect

The goal of the Hydrothermal Program is to develop concepts which allow better utilization of geothermal energy to reduce the life-cycle cost of producing electricity from liquid-dominated, hydrothermal resources. Research in the program is currently ongoing in three areas: (1) Heat Cycle Research, which is looking at methods to increase binary plant efficiencies; (2) Materials Development, which is developing materials for use in geothermal associated environments; and (3) Advanced Brine Chemistry, with work taking place in both the brine chemistry modeling area and waste disposal area. The presentations during this session reviewed the accomplishments and activities taking place in the hydrothermal energy conversion program. Lawrence Kukacka, Brookhaven National Laboratory, discussed advancements being made to develop materials for use in geothermal applications. This research has identified a large number of potential materials for use in applications from pipe liners that inhibit scale buildup and reduce corrosion to elastomers for downhole use. Carl J. Bliem, Idaho National Engineering Laboratory, discussed preparations currently underway to conduct field investigations of the condensation behavior of supersaturated turbine expansions. The research will evaluate whether the projected 8% to 10% improvement in brine utilization can be realized by allowing these expansions. Eugene T. Premuzic, Brookhaven National Laboratory, discussed advancements being made using biotechnology for treatment of geothermal residual waste; the various process options were discussed in terms of biotreatment variables. A treatment scenario and potential disposal costs were presented. John H. Weare, University of California, San Diego, discussed the present capabilities of the brine chemistry model he has developed for geothermal applications and the information it can provide a user. This model is available to industry. The accomplishments from the research projects presented in this session have been many. It is hoped that these accomplishments can be integrated into industrial geothermal power plant sites to assist in realizing the goal of reducing the cost of energy produced from the geothermal resource.

Robertson, David W.; LaSala, Raymond J.

1992-03-24T23:59:59.000Z

24

Hydrothermal Liquefaction of Biomass  

SciTech Connect

Hydrothermal liquefaction technology is describes in its relationship to fast pyrolysis of biomass. The scope of work at PNNL is discussed and some intial results are presented. HydroThermal Liquefaction (HTL), called high-pressure liquefaction in earlier years, is an alternative process for conversion of biomass into liquid products. Some experts consider it to be pyrolysis in solvent phase. It is typically performed at about 350 C and 200 atm pressure such that the water carrier for biomass slurry is maintained in a liquid phase, i.e. below super-critical conditions. In some applications catalysts and/or reducing gases have been added to the system with the expectation of producing higher yields of higher quality products. Slurry agents ('carriers') evaluated have included water, various hydrocarbon oils and recycled bio-oil. High-pressure pumping of biomass slurry has been a major limitation in the process development. Process research in this field faded away in the 1990s except for the HydroThermal Upgrading (HTU) effort in the Netherlands, but has new resurgence with other renewable fuels in light of the increased oil prices and climate change concerns. Research restarted at Pacific Northwest National Laboratory (PNNL) in 2007 with a project, 'HydroThermal Liquefaction of Agricultural and Biorefinery Residues' with partners Archer-Daniels-Midland Company and ConocoPhillips. Through bench-scale experimentation in a continuous-flow system this project investigated the bio-oil yield and quality that could be achieved from a range of biomass feedstocks and derivatives. The project was completed earlier this year with the issuance of the final report. HydroThermal Liquefaction research continues within the National Advanced Biofuels Consortium with the effort focused at PNNL. The bench-scale reactor is being used for conversion of lignocellulosic biomass including pine forest residue and corn stover. A complementary project is an international collaboration with Canada to investigate kelp (seaweed) as a biomass feedstock. The collaborative project includes process testing of the kelp in HydroThermal Liquefaction in the bench-scale unit at PNNL. HydroThermal Liquefaction at PNNL is performed in the hydrothermal processing bench-scale reactor system. Slurries of biomass are prepared in the laboratory from whole ground biomass materials. Both wet processing and dry processing mills can be used, but the wet milling to final slurry is accomplished in a stirred ball mill filled with angle-cut stainless steel shot. The PNNL HTL system, as shown in the figure, is a continuous-flow system including a 1-litre stirred tank preheater/reactor, which can be connected to a 1-litre tubular reactor. The product is filtered at high-pressure to remove mineral precipitate before it is collected in the two high-pressure collectors, which allow the liquid products to be collected batchwise and recovered alternately from the process flow. The filter can be intermittently back-flushed as needed during the run to maintain operation. By-product gas is vented out the wet test meter for volume measurement and samples are collected for gas chromatography compositional analysis. The bio-oil product is analyzed for elemental content in order to calculate mass and elemental balances around the experiments. Detailed chemical analysis is performed by gas chromatography-mass spectrometry and 13-C nuclear magnetic resonance is used to evaluate functional group types in the bio-oil. Sufficient product is produced to allow subsequent catalytic hydroprocessing to produce liquid hydrocarbon fuels. The product bio-oil from hydrothermal liquefaction is typically a more viscous product compared to fast pyrolysis bio-oil. There are several reasons for this difference. The HTL bio-oil contains a lower level of oxygen because of more extensive secondary reaction of the pyrolysis products. There are less amounts of the many light oxygenates derived from the carbohydrate structures as they have been further reacted to phenolic Aldol condensation products. The bio-oil

Elliott, Douglas C.

2010-12-10T23:59:59.000Z

25

Hydrothermal Reservoirs | Open Energy Information  

Open Energy Info (EERE)

Hydrothermal Reservoirs Hydrothermal Reservoirs Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Hydrothermal Reservoirs Dictionary.png Hydrothermal Reservoir: Hydrothermal Reservoirs are underground zones of porous rock containing hot water and steam, and can be naturally occurring or human-made. Other definitions:Wikipedia Reegle Natural, shallow hydrothermal reservoirs naturally occurring hot water reservoirs, typically found at depths of less than 5 km below the Earth's surface where there is heat, water and a permeable material (permeability in rock formations results from fractures, joints, pores, etc.). Often, hydrothermal reservoirs have an overlying layer that bounds the reservoir and also serves as a thermal insulator, allowing greater heat retention. If hydrothermal reservoirs

26

Hydrothermal System | Open Energy Information  

Open Energy Info (EERE)

Hydrothermal System Hydrothermal System (Redirected from Hydrothermal Systems) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Hydrothermal Systems Geothermal Technologies There are many types of Geothermal Technologies that take advantage of the earth's heat: Hydrothermal Systems Enhanced Geothermal Systems (EGS) Sedimentary Geothermal Systems Co-Produced Geothermal Systems Geothermal Direct Use Ground Source Heat Pumps Dictionary.png Hydrothermal Systems: A hydrothermal system is one that included fluid, heat, and permeability in a naturally occurring geological formation for the production of electricity. Other definitions:Wikipedia Reegle Geothermal production well at Imperial Valley, California. The drilling of production wells, such as this one in southern California, results in

27

hydrothermal | OpenEI  

Open Energy Info (EERE)

hydrothermal hydrothermal Dataset Summary Description No description given. Source National Renewable Energy Laboratory Date Released July 03rd, 2012 (2 years ago) Date Updated July 03rd, 2012 (2 years ago) Keywords biopower csp geothermal hydropower hydrothermal Renewable Energy Technical Potential rooftop United States utility-scale wind Data text/csv icon United States Renewable Energy Technical Potential (csv, 7.7 KiB) Quality Metrics Level of Review Some Review Comment Temporal and Spatial Coverage Frequency Time Period License License Open Data Commons Public Domain Dedication and Licence (PDDL) Comment Rate this dataset Usefulness of the metadata Average vote Your vote Usefulness of the dataset Average vote Your vote Ease of access Average vote Your vote Overall rating Average vote Your vote

28

Direct use of hydrothermal energy: a review of environmental aspects  

DOE Green Energy (OSTI)

The potential environmental impacts of the exploration, development, and production of hydrothermal geothermal energy for direct use applications are reviewed and evaluated. Mitigation strategies and research and development needs are included. (MHR)

O'Banion, K.; Layton, D.

1981-08-28T23:59:59.000Z

29

Hydrothermal Alteration | Open Energy Information  

Open Energy Info (EERE)

Hydrothermal Alteration Hydrothermal Alteration Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Hydrothermal Alteration Dictionary.png Hydrothermal Alteration: No definition has been provided for this term. Add a Definition Opalized rock is often valued for its spectacular colors and it may indicate past hydrothermal activity (reference: https://uwaterloo.ca/earth-sciences-museum/what-earth/what-earth-minerals/what-earth-precious-opal) The heat and minerals of hydrothermal waters may result in the chemical alteration of rocks that it comes in contact with. The minerals that result from this alteration may be evidence of past hydrothermal activity. Opalization - alteration to opal. Argillization- alteration to clay minerals such as smectite, illite, and kaolinite which often form caprocks.

30

Life and hydrothermal vents  

NLE Websites -- All DOE Office Websites (Extended Search)

Life and hydrothermal vents Life and hydrothermal vents Name: williamh Status: N/A Age: N/A Location: N/A Country: N/A Date: Around 1993 Question: Are there biological communities near hydrothermal vents in the ocean? Is there any life inside the hydrothermal vent? Replies: If the presence of microorganisms in hot springs and geysers are any indication, I am certain there is life inside hydrothermal vents. These heat loving organisms are termed "thermophiles" and thrive where other life dies. They are able to survive in extreme heat due to the unique way their proteins are synthesized. The May 1993 Discover has a special article on thermophiles. wizkid Life at high temperature became very interesting to molecular biologists recently. The enormously useful technique known as PCR, (polymerase chain reaction), by which very small amounts of rare DNA can be amplified to large concentrations (Jurassic Park!), depends on having a DNA polymerase (the enzyme that synthesizes complementary DNA strands during replication of chromosomes), that can work at high temperatures, or at least can survive repeated high temperature cycles. PCR depends on synthesis of DNA followed by forced separation of the daughter strands at high temperature, followed by new synthesis, to amplify DNA exponentially. At any rate, normal bacterial polymerase will not work because the high temperature cycles kill it. Enter the now infamous, patented Taq polymerase, isolated from Thermus aquaticus, a hot spring bacterium, which works after heating to up to 94 C! So knowledge of life at high temperature allowed molecular biologists to get PCR to work, with all its benefits in cloning very rare genes and amplifying small amounts of DNA for forensic work etc.

31

Catalytic Hydrothermal Gasification of Biomass  

Science Conference Proceedings (OSTI)

A recent development in biomass gasification is the use of a pressurized water processing environment in order that drying of the biomass can be avoided. This paper reviews the research undertaken developing this new option for biomass gasification. This review does not cover wet oxidation or near-atmospheric-pressure steam-gasification of biomass. Laboratory research on hydrothermal gasification of biomass focusing on the use of catalysts is reviewed here, and a companion review focuses on non-catalytic processing. Research includes liquid-phase, sub-critical processing as well as super-critical water processing. The use of heterogeneous catalysts in such a system allows effective operation at lower temperatures, and the issues around the use of catalysts are presented. This review attempts to show the potential of this new processing concept by comparing the various options under development and the results of the research.

Elliott, Douglas C.

2008-05-06T23:59:59.000Z

32

Rational control of hydrothermal nanowire synthesis and its applications  

E-Print Network (OSTI)

Hydrothermal nanowire synthesis is a rapidly emerging nanowire discipline that enables low temperature growth and batch process. It has a major impact on the development of novel energy conversion devices, high density ...

Joo, Jaebum

2010-01-01T23:59:59.000Z

33

Hydrothermal System | Open Energy Information  

Open Energy Info (EERE)

(Redirected from Hydrothermal) (Redirected from Hydrothermal) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Hydrothermal Systems Geothermal Technologies There are many types of Geothermal Technologies that take advantage of the earth's heat: Hydrothermal Systems Enhanced Geothermal Systems (EGS) Sedimentary Geothermal Systems Co-Produced Geothermal Systems Geothermal Direct Use Ground Source Heat Pumps Dictionary.png Hydrothermal Systems: A hydrothermal system is one that included fluid, heat, and permeability in a naturally occurring geological formation for the production of electricity. Other definitions:Wikipedia Reegle Geothermal production well at Imperial Valley, California. The drilling of production wells, such as this one in southern California, results in one-third to one-half of the cost of a geothermal project. Copyright ©

34

Hydrothermal Deposition | Open Energy Information  

Open Energy Info (EERE)

Hydrothermal Deposition Hydrothermal Deposition Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Hydrothermal Deposition Dictionary.png Hydrothermal Deposition: No definition has been provided for this term. Add a Definition Quartz veins indicate ancient fluid flow, possibly the result of a hydrothermal system (reference: http://www.nvcc.edu/home/cbentley/dc_rocks/) Tufa mounds indicate the location of extinct hot springs. In this photo they show the ancient extent of the surface manifestations at Mono Lake, CA (reference: http://news.medill.northwestern.edu/climatechange/page.aspx?id=170704)(photo by Scott Stine) Hydrothermal water carries minerals as it travels through the crust. These minerals are often deposited as pressure decreases as the fluid approaches

35

Cody hydrothermal system  

DOE Green Energy (OSTI)

The hot springs of Colter's Hell are the surface manifestations of a much larger hydothermal system. That system has been studied to define its extent, maximum temperature, and mechanism of operation. The study area covers 2700 km/sup 2/ (1040 mi/sup 2/) in northwest Wyoming. Research and field work included locating and sampling the hot springs, geologic mapping, thermal logging of available wells, measuring thermal conductivities, analyzing over 200 oil and gas well bottom-hole temperatures, and compiling and analyzing hydrologic data. These data were used to generate a model for the hydrothermal system.

Heasler, H.P.

1982-01-01T23:59:59.000Z

36

Whole Algae Hydrothermal Liquefaction Technology Pathway  

SciTech Connect

In support of the Bioenergy Technologies Office, the National Renewable Energy Laboratory (NREL) and the Pacific Northwest National Laboratory (PNNL) are undertaking studies of biomass conversion technologies to hydrocarbon fuels to identify barriers and target research toward reducing conversion costs. Process designs and preliminary economic estimates for each of these pathway cases were developed using rigorous modeling tools (Aspen Plus and Chemcad). These analyses incorporated the best information available at the time of development, including data from recent pilot and bench-scale demonstrations, collaborative industrial and academic partners, and published literature and patents. This pathway case investigates the feasibility of using whole wet microalgae as a feedstock for conversion via hydrothermal liquefaction. Technical barriers and key research needs have been assessed in order for the hydrothermal liquefaction of microalgae to be competitive with petroleum-derived gasoline, diesel and jet range blendstocks.

Biddy, Mary J.; Davis, Ryan; Jones, Susanne B.; Zhu, Yunhua

2013-03-31T23:59:59.000Z

37

Hydrothermal Exploration Best Practices and Geothermal Knowledge Exchange  

Open Energy Info (EERE)

Hydrothermal Exploration Best Practices and Geothermal Knowledge Exchange Hydrothermal Exploration Best Practices and Geothermal Knowledge Exchange on Openei Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Hydrothermal Exploration Best Practices and Geothermal Knowledge Exchange on Openei Abstract Though exploring for hydrothermal resources is not new, advances in exploration technologies and the pursuit of less visible resources have created a need to outline exploration best practices. This multi-year study outlines 21 geothermal exploration regions in the Western United States. These regions were developed based on the U.S. Geological Survey (USGS) physiographic regions, then adjusted to fit geothermal parameters such as differences in geologic regime, structure, heat source, surface effects

38

Hydrothermal System | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Hydrothermal Systems Geothermal Technologies There are many types of Geothermal Technologies that take advantage of the earth's heat: Hydrothermal Systems Enhanced Geothermal Systems (EGS) Sedimentary Geothermal Systems Co-Produced Geothermal Systems Geothermal Direct Use Ground Source Heat Pumps Dictionary.png Hydrothermal Systems: A hydrothermal system is one that included fluid, heat, and permeability in a naturally occurring geological formation for the production of electricity. Other definitions:Wikipedia Reegle Geothermal production well at Imperial Valley, California. The drilling of production wells, such as this one in southern California, results in one-third to one-half of the cost of a geothermal project. Copyright ©

39

Geothermal hydrothermal direct heat use: US market size and market penetration estimates  

Science Conference Proceedings (OSTI)

This study estimates the future regional and national market penetration path of hydrothermal geothermal direct heat applications in the United States. A Technology Substitution Model (MARPEN) is developed and used to estimate the energy market shares captured by low-temperature (50 to 150/sup 0/C) hydrothermal geothermal energy systems over the period 1985 to 2020. The sensitivity of hydrothermal direct heat market shares to various government hydrothermal commercialization policies is examined. Several substantive recommendations to help accelerate commercialization of geothermal direct heat utilization in the United States are indicated and possible additional analyses are discussed.

El Sawy, A.H.; Entingh, D.J.

1980-09-01T23:59:59.000Z

40

Modeling of the fault-controlled hydrothermal ore-forming systems  

DOE Green Energy (OSTI)

A necessary precondition for the formation of hydrothermal ore deposits is a strong focusing of hydrothermal flow as fluids move from the fluid source to the site of ore deposition. The spatial distribution of hydrothermal deposits favors the concept that such fluid flow focusing is controlled, for the most part, by regional faults which provide a low resistance path for hydrothermal solutions. Results of electric analog simulations, analytical solutions, and computer simulations of the fluid flow, in a fault-controlled single-pass advective system, confirm this concept. The influence of the fluid flow focusing on the heat and mass transfer in a single-pass advective system was investigated for a simplified version of the metamorphic model for the genesis of greenstone-hosted gold deposits. The spatial distribution of ore mineralization, predicted by computer simulation, is in reasonable agreement with geological observations. Computer simulations of the fault-controlled thermoconvective system revealed a complex pattern of mixing hydrothermal solutions in the model, which also simulates the development of the modern hydrothermal systems on the ocean floor. The specific feature of the model considered, is the development under certain conditions of an intra-fault convective cell that operates essentially independently of the large scale circulation. These and other results obtained during the study indicate that modeling of natural fault-controlled hydrothermal systems is instructive for the analysis of transport processes in man-made hydrothermal systems that could develop in geologic high-level nuclear waste repositories.

Pek, A.A.; Malkovsky, V.I. [Russian Academy of Sciences, Moscow (Russian Federation). Inst. of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry

1993-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

GEOLOGY AND HYDROTHERMAL ALTERATION OF THE RAFT RIVER GEOTHERMAL SYSTEM,  

Open Energy Info (EERE)

GEOLOGY AND HYDROTHERMAL ALTERATION OF THE RAFT RIVER GEOTHERMAL SYSTEM, GEOLOGY AND HYDROTHERMAL ALTERATION OF THE RAFT RIVER GEOTHERMAL SYSTEM, IDAHO Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: GEOLOGY AND HYDROTHERMAL ALTERATION OF THE RAFT RIVER GEOTHERMAL SYSTEM, IDAHO Details Activities (3) Areas (1) Regions (0) Abstract: The Raft River geothermal system is located in southern Idaho, near the Utah-Idaho state boarder in the Raft River Valley. The field, which is owned and operated by U.S. Geothermal, has been selected as an EGS demonstration site by the U. S. Department of Energy. This paper summarizes ongoing geologic and petrologic investigations being conducted in support of this project. The reservoir is developed in fractured Proterozoic schist and quartzite, and Archean quartz monzonite cut by younger diabase

42

Structural Settings Of Hydrothermal Outflow- Fracture Permeability  

Open Energy Info (EERE)

Settings Of Hydrothermal Outflow- Fracture Permeability Settings Of Hydrothermal Outflow- Fracture Permeability Maintained By Fault Propagation And Interaction Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Structural Settings Of Hydrothermal Outflow- Fracture Permeability Maintained By Fault Propagation And Interaction Details Activities (1) Areas (1) Regions (0) Abstract: Hydrothermal outflow occurs most commonly at the terminations of individual faults and where multiple faults interact. These areas of fault propagation and interaction are sites of elevated stress termed breakdown regions. Here, stress concentrations cause active fracturing and continual re-opening of fluid-flow conduits, permitting long-lived hydrothermal flow despite potential clogging of fractures due to mineral precipitation. As

43

Annual US Geothermal Power Production and Development Report | Open Energy  

Open Energy Info (EERE)

US Geothermal Power Production and Development Report US Geothermal Power Production and Development Report Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Annual US Geothermal Power Production and Development Report Details Activities (0) Areas (0) Regions (0) Abstract: To increase the accuracy and value of information presented in its annual US Geothermal Power Production and Development Report, the Geothermal Energy Association (GEA) developed a reporting system, known as the Geothermal Reporting Terms and Definitions, in 2010. The Geothermal Reporting Terms and Definitions serve as a guideline to project developers in reporting geothermal project development information to the GEA. A basic understanding of the Geothermal Reporting Terms and Definitions will also aid the reader in fully understanding the information presented in this

44

Structural Settings Of Hydrothermal Outflow- Fracture Permeability...  

Open Energy Info (EERE)

elevated stress termed breakdown regions. Here, stress concentrations cause active fracturing and continual re-opening of fluid-flow conduits, permitting long-lived hydrothermal...

45

Land use siting considerations for hydrothermal energy facilities  

DOE Green Energy (OSTI)

Hydrothermal resources are described and discussion is focused on some of the land use and social considerations involved in siting hydrothermal power plants. (MHR)

Oakes, K.M.

1980-01-01T23:59:59.000Z

46

Hydraulic characterization of hydrothermally altered Nopal tuff  

SciTech Connect

Understanding the mechanics of variably saturated flow in fractured-porous media is of fundamental importance to evaluating the isolation performance of the proposed high-level radioactive waste repository for the Yucca Mountain site. Developing that understanding must be founded on the analysis and interpretation of laboratory and field data. This report presents an analysis of the unsaturated hydraulic properties of tuff cores from the Pena Blanca natural analog site in Mexico. The basic intent of the analysis was to examine possible trends and relationships between the hydraulic properties and the degree of hydrothermal alteration exhibited by the tuff samples. These data were used in flow simulations to evaluate the significance of a particular conceptual (composite) model and of distinct hydraulic properties on the rate and nature of water flow.

Green, R.T.; Meyer-James, K.A. [Southwest Research Institute, San Antonio, TX (United States); Rice, G. [George Rice and Associates, San Antonio, TX (United States)

1995-07-01T23:59:59.000Z

47

DRILLED HYDROTHERMAL ENERGY Drilling for seawater  

E-Print Network (OSTI)

technologies to obtain thermal energy (and other benefits) from a large body of water #12;Microgrid Customer ENERGY : Underground Technologies #12;#12;Microgrid Customer Facilities Drilled Hydrothermal Energy Plant;#12;Microgrid Customer Facilities Drilled Hydrothermal Energy Plant Cooling Power Biofuel / H2 Fresh Water

48

Whole Algae Hydrothermal Liquefaction Technology Pathway  

DOE Green Energy (OSTI)

This technology pathway case investigates the feasibility of using whole wet microalgae as a feedstock for conversion via hydrothermal liquefaction. Technical barriers and key research needs have been assessed in order for the hydrothermal liquefaction of microalgae to be competitive with petroleum-derived gasoline-, diesel-, and jet-range hydrocarbon blendstocks.

Biddy, M.; Davis, R.; Jones, S.

2013-03-01T23:59:59.000Z

49

Cyclic coordinate descent in hydrothermal nonsmooth problems  

Science Conference Proceedings (OSTI)

In this paper we present an algorithm, inspired by the cyclic coordinate descent method, which allows the solution of hydrothermal optimization problems involving pumped-storage plants. The proof of the convergence of the succession generated by the ... Keywords: Coordinate descent, Hydrothermal coordination, Optimal control, Zangwill's theorem

Luis Bayn; Jose M. Grau; Maria M. Ruiz; Pedro M. Surez

2012-02-01T23:59:59.000Z

50

What Defines a Separate Hydrothermal System  

DOE Green Energy (OSTI)

Separate hydrothermal systems can be defined in a variety of ways. Criteria which have been applied include separation of heat source, upflow, economic resource and geophysical anomaly. Alternatively, connections have been defined by the effects of withdrawal of economically useful fluid and subsidence, effects of reinjection, changes in thermal features, or by a hydrological connection of groundwaters. It is proposed here that: ''A separate hydrothermal system is one that is fed by a separate convective upflow of fluid, at a depth above the brittle-ductile transition for the host rocks, while acknowledging that separate hydrothermal systems can be hydrologically interconnected at shallower levels''.

Lawless, J.V.; Bogie, I.; Bignall, G.

1995-01-01T23:59:59.000Z

51

Instabilities during liquid migration into superheated hydrothermal systems  

DOE Green Energy (OSTI)

Hydrothermal systems typically consist of hot permeable rock which contains either liquid or liquid and saturated steam within the voids. These systems vent fluids at the surface through hot springs, fumaroles, mud pools, steaming ground and geysers. They are simultaneously recharged as meteoric water percolates through the surrounding rock or through the active injection of water at various geothermal reservoirs. In a number of geothermal reservoirs from which significant amounts of hot fluid have been extracted and passed through turbines, superheated regions of vapor have developed. As liquid migrates through a superheated region of a hydrothermal system, some of the liquid vaporizes at a migrating liquid-vapor interface. Using simple physical arguments, and analogue laboratory experiments we show that, under the influence of gravity, the liquid-vapor interface may become unstable and break up into fingers.

Fitzgerald, Shaun D.; Woods, Andrew W.

1995-01-26T23:59:59.000Z

52

Flow and permeability structure of the Beowawe, Nevada hydrothermal system  

DOE Green Energy (OSTI)

A review of past geologic, geochemical, hydrological, pressure transient, and reservoir engineering studies of Beowawe suggests a different picture of the reservoir than previously presented. The Beowawe hydrothermal contains buoyant thermal fluid dynamically balanced with overlying cold water, as shown by repeated temperature surveys and well test results. Thermal fluid upwells from the west of the currently developed reservoir at the intersection of the Malpais Fault and an older structural feature associated with mid-Miocene rifting. A tongue of thermal fluid rises to the east up the high permeability Malpais Fault, discharges at the Geysers area, and is in intimate contact with overlying cooler water. The permeability structure is closely related to the structural setting, with the permeability of the shallow hydrothermal system ranging from 500 to 1,000 D-ft, while the deeper system ranges from 200 to 400 D-ft.

Faulder, D.D. [Lockheed Idaho Technologies Co., Idaho Falls, ID (United States); Johnson, S.D.; Benoit, W.R. [Oxbow Power Services, Inc., Reno, NV (United States)

1997-05-01T23:59:59.000Z

53

Hyperbaric hydrothermal atomic force microscope  

SciTech Connect

A hyperbaric hydrothermal atomic force microscope (AFM) is provided to image solid surfaces in fluids, either liquid or gas, at pressures greater than normal atmospheric pressure. The sample can be heated and its surface imaged in aqueous solution at temperatures greater than 100.degree. C. with less than 1 nm vertical resolution. A gas pressurized microscope base chamber houses the stepper motor and piezoelectric scanner. A chemically inert, flexible membrane separates this base chamber from the sample cell environment and constrains a high temperature, pressurized liquid or gas in the sample cell while allowing movement of the scanner. The sample cell is designed for continuous flow of liquid or gas through the sample environment.

Knauss, Kevin G. (Livermore, CA); Boro, Carl O. (Milpitas, CA); Higgins, Steven R. (Laramie, WY); Eggleston, Carrick M. (Laramie, WY)

2002-01-01T23:59:59.000Z

54

Hydrothermal processing of Hanford tank wastes: Process modeling and control  

Science Conference Proceedings (OSTI)

In the Los Alamos National Laboratory (LANL) hydrothermal process, waste streams are first pressurized and heated as they pass through a continuous flow tubular reactor vessel. The waste is maintained at reaction temperature of 300--550 C where organic destruction and sludge reformation occur. This report documents LANL activities in process modeling and control undertaken in FY94 to support hydrothermal process development. Key issues discussed include non-ideal flow patterns (e.g. axial dispersion) and their effect on reactor performance, the use and interpretation of inert tracer experiments, and the use of computational fluid mechanics to evaluate novel hydrothermal reactor designs. In addition, the effects of axial dispersion (and simplifications to rate expressions) on the estimated kinetic parameters are explored by non-linear regression to experimental data. Safety-related calculations are reported which estimate the explosion limits of effluent gases and the fate of hydrogen as it passes through the reactor. Development and numerical solution of a generalized one-dimensional mathematical model is also summarized. The difficulties encountered in using commercially available software to correlate the behavior of high temperature, high pressure aqueous electrolyte mixtures are summarized. Finally, details of the control system and experiments conducted to empirically determine the system response are reported.

Currier, R.P. [comp.

1994-10-01T23:59:59.000Z

55

Supply of geothermal power from hydrothermal sources: A study of the cost of power in 20 and 40 years  

DOE Green Energy (OSTI)

This study develops estimates for the amount of hydrothermal geothermal power that could be on line in 20 and 40 years. This study was intended to represent a snapshot'' in 20 and 40 years of the hydrothermal energy available for electric power production should a market exist for this power. This does not represent the total or maximum amount of hydrothermal power, but is instead an attempt to estimate the rate at which power could be on line constrained by the exploration, development and support infrastructure available to the geothermal industry, but not constrained by the potential market for power.

Petty, S. (Petty (Susan) Consulting, Solano Beach, CA (United States)); Livesay, B.J. (Livesay Consultants, Inc., Encinitas, CA (United States)); Long, W.P. (Carlin Gold Co., Inc., Grass Valley, CA (United States)); Geyer, J. (Geyer (John) and Associates, Vancouver, WA (United States))

1992-11-01T23:59:59.000Z

56

Definition: Hydrothermal Reservoir | Open Energy Information  

Open Energy Info (EERE)

Hydrothermal Reservoirs are underground zones of porous rock containing hot water and steam, and can be naturally occurring or human-made.1 References x Ret LikeLike...

57

Biomass reforming processes in hydrothermal media  

E-Print Network (OSTI)

While hydrothermal technologies offer distinct advantages in being able to process a wide variety of biomass feedstocks, the composition of the feedstock will have a large effect on the processing employed. This thesis ...

Peterson, Andrew A

2009-01-01T23:59:59.000Z

58

Mesoporous titania nanocrystals by hydrothermal template growth  

Science Conference Proceedings (OSTI)

Mesoporous TiO2 nanocrystals have been synthetized by a classical sol-gel route integrated by an hydrothermal growth step using monomeric (dodecylpyridinium chloride, DPC) or dimeric gemini-like (GS3) surfactants as template directing agents. ...

Giuseppe Cappelletti; Silvia Ardizzone; Francesca Spadavecchia; Daniela Meroni; Iolanda Biraghi

2011-01-01T23:59:59.000Z

59

Water geochemistry of hydrothermal systems, Wood River District, Idaho  

DOE Green Energy (OSTI)

Hydrothermal systems of the Wood River District, central Idaho, have been studied by geologic mapping of thermal spring areas and geochemical investigations of thermal and non-thermal waters. This report summarizes the new geochemical data gathered during the study. Integration of the results of geological and geochemical studies has led to development of a target model for hydrothermal resources on the margin of the Idaho Batholith. Warfield Hot Springs, with temperatures up to 58/sup 0/C, flow from a major shear zone along the margin of an apophysis of the batholith. Hailey Hot Springs, with temperatures up to 60/sup 0/C, occur in an area of multiple thrust faults and newly recognized, closely spaced normal faults in the Paleozoic Milligen and Wood River Formations, 2.5 km from a highly brecciated batholith contact. Other Wood River district hydrothermal systems also occur along the margins of batholith apophyses or in adjacent highly fractured Paleozoic rocks, where there are indications of batholith rocks at shallow depths (100 to 300 m) in water wells.

Zeisloft, J.; Foley, D.; Blackett, R.

1983-08-01T23:59:59.000Z

60

Reconnaissance of the hydrothermal resources of Utah  

DOE Green Energy (OSTI)

Geologic factors in the Basin and Range province in Utah are more favorable for the occurrence of geothermal resources than in other areas on the Colorado Plateaus or in the Middle Rocky Mountains. These geologic factors are principally crustal extension and crustal thinning during the last 17 million years. Basalts as young as 10,000 years have been mapped in the area. High-silica volcanic and intrusive rocks of Quaternary age can be used to locate hydrothermal convection systems. Drilling for hot, high-silica, buried rock bodies is most promising in the areas of recent volcanic activity. Southwestern Utah has more geothermal potential than other parts of the Basin and Range province in Utah. The Roosevelt Hot Springs area, the Cove Fort-Sulphurdale area, and the area to the north as far as 60 kilometers from them probably have the best potential for geothermal development for generation of electricity. Other areas with estimated reservoir temperatures greater than 150/sup 0/C are Thermo, Monroe, Red Hill (in the Monroe-Joseph Known Geothermal Resource Area), Joseph Hot Springs, and the Newcastle area. The rates of heat and water discharge are high at Crater, Meadow, and Hatton Hot Springs, but estimated reservoir temperatures there are less than 150/sup 0/C. Additional exploration is needed to define the potential in three additional areas in the Escalante Desert. 28 figs., 18 tabs.

Rush, F.E.

1983-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

A comparison of hydrothermal reservoirs of the Western United States. Topical Report 3  

DOE Green Energy (OSTI)

This report presents a portion of the results from a one-year feasibility study sponsored by the Electric Power Research Institute to assess the feasibility of constructing a 25 to 50 MWe geothermal power plant using low salinity hydrothermal fluids as the energy source. It contains the results of a comparative study of sixteen hydrothermal reservoirs in the US. The reservoirs were selected for comparison on the basis of available data, development potential, and representativeness of known hydrothermal reservoirs in the US. Six reservoir and fluid criteria were considered the most important in determining the development and power conversion potential: depth and lithology, reservoir temperature, tested flow rate per well, fluid chemistry, magnitude of the reserve and reinjection potential. These criteria were evaluated for each of the selected reservoirs.

Meidav, H. Tsvi; Sanyal, Subir

1976-12-01T23:59:59.000Z

62

Benefit-cost analysis of DOE's Current Federal Program to increase hydrothermal resource utilization. Final report  

DOE Green Energy (OSTI)

The impact of DOE's Current Federal Program on the commercialization of hydrothermal resources between 1980 and 2000 is analyzed. The hydrothermal resources of the United States and the types of DOE activities used to stimulate the development of these resources for both electric power and direct heat use are described briefly. The No Federal Program and the Current Federal Program are then described in terms of funding levels and the resultant market penetration estimates through 2000. These market penetration estimates are also compared to other geothermal utilization forecasts. The direct benefits of the Current Federal Program are next presented for electric power and direct heat use applications. An analysis of the external impacts associated with the additional hydrothermal resource development resulting from the Current Federal Program is also provided. Included are environmental effects, national security/balance-of-payments improvements, socioeconomic impacts and materials requirements. A summary of the analysis integrating the direct benefits, external impacts and DOE program costs concludes the report.

Not Available

1981-12-10T23:59:59.000Z

63

Production of Advanced Biofuels via Liquefaction - Hydrothermal Liquefaction Reactor Design: April 5, 2013  

SciTech Connect

This report provides detailed reactor designs and capital costs, and operating cost estimates for the hydrothermal liquefaction reactor system, used for biomass-to-biofuels conversion, under development at Pacific Northwest National Laboratory. Five cases were developed and the costs associated with all cases ranged from $22 MM/year - $47 MM/year.

Knorr, D.; Lukas, J.; Schoen, P.

2013-11-01T23:59:59.000Z

64

Characterization of advanced preprocessed materials (Hydrothermal)  

Science Conference Proceedings (OSTI)

The initial hydrothermal treatment parameters did not achieve the proposed objective of this effort; the reduction of intrinsic ash in the corn stover. However, liquid fractions from the 170C treatments was indicative that some of the elements routinely found in the ash that negatively impact the biochemical conversion processes had been removed. After reviewing other options for facilitating ash removal, sodium-citrate (chelating agent) was included in the hydrothermal treatment process, resulting in a 69% reduction in the physiological ash. These results indicated that chelation hydrothermal treatment is one possible approach that can be utilized to reduce the overall ash content of feedstock materials and having a positive impact on conversion performance.

Rachel Emerson; Garold Gresham

2012-09-01T23:59:59.000Z

65

Potential benefits of geothermal electrical production from hydrothermal resources  

DOE Green Energy (OSTI)

The potential national benefits of geothermal electric energy development from the hydrothermal resources in the West are estimated for several different scenarios. The U.S. electrical economy is simulated by computer using a linear programming optimization technique. Under most of the scenarios, benefits are estimated at $2 to $4 billion over the next 50 years on a discounted present value basis. The electricity production from hydrothermal plants reaches 2 to 4 percent of the national total, which will represent 10 to 20 percent of the installed capacity in the West. Installed geothermal capacity in 1990 is estimated to be 9,000 to 17,000 Mw(e). The geothermal capacity should reach 28,000 to 65,000 Mw(e) by year 2015. The ''most likely'' scenario yields the lower values in the above ranges. Under this scenario geothermal development would save the utility industry $11 billion in capital costs (undiscounted); 32 million separative work units; 64,000 tons of U/sub 3/O/sub 8/; and 700 million barrels of oil. The most favorable scenario for geothermal energy occurs when fossil fuel prices are projected to increase at 5 percent/year. The benefits of geothermal energy then exceed $8 billion on a discounted present value basis. Supply curves were developed for hydrothermal resources based on the recent U.S. Geological Survey (USGS) resource assessment, resource characteristics, and projected power conversion technology and costs. Geothermal plants were selected by the optimizing technique to fill a need for ''light load'' plants. This infers that geothermal plants may be used in the future primarily for load-following purposes.

Bloomster, C.H.; Engel, R.L.

1976-06-01T23:59:59.000Z

66

Hydrothermal vent complexes associated with sill intrusionsin sedimentarybasins  

E-Print Network (OSTI)

. 477 Discussion on structure and evolution of hydrothermal vent complexes in the Karoo Basin, South the paper by Svensen et al. (2006) on South African hydrothermal vents within the Karoo Basin, particularly for their interest in our paper on hydrothermal vent complexes in the Karoo Basin (Svensen et al. 2006). Based

Podladchikov, Yuri

67

Potential impact of R and D on hydrothermal energy cost  

DOE Green Energy (OSTI)

The potentital impact of the DOE/Geothermal Technology Development programs on the cost of geothermal power has been estimated using the computer program IMGEO.300. Results indicate a potential 30 to 40% cost reduction for hydrothermal systems with a 40 to 50% cost reduction potential for binary systems. The purpose of this document is to demonstrate the use of IMGEO. The initial results are tentative because the R and D goals have not been finalized and the code has not been completely validated.

Traeger, R.K.

1988-01-01T23:59:59.000Z

68

Trace-Element Distribution In An Active Hydrothermal System, Roosevelt Hot  

Open Energy Info (EERE)

Trace-Element Distribution In An Active Hydrothermal System, Roosevelt Hot Trace-Element Distribution In An Active Hydrothermal System, Roosevelt Hot Springs Thermal Area, Utah Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Trace-Element Distribution In An Active Hydrothermal System, Roosevelt Hot Springs Thermal Area, Utah Details Activities (3) Areas (1) Regions (0) Abstract: Chemical interaction of thermal fluids with reservoir rock in the Roosevelt Hot Springs thermal area, Utah, has resulted in the development of characteristic trace-element dispersion patterns. Multielement analyses of surface rock samples, soil samples and drill cuttings from deep exploration wells provide a three-dimensional perspective of chemical redistribution within this structurally-controlled hot-water geothermal system. Five distinctive elemental suites of chemical enrichment are

69

Conceptual geologic model and native state model of the Roosevelt Hot Springs hydrothermal system  

DOE Green Energy (OSTI)

A conceptual geologic model of the Roosevelt Hot Springs hydrothermal system was developed by a review of the available literature. The hydrothermal system consists of a meteoric recharge area in the Mineral Mountains, fluid circulation paths to depth, a heat source, and an outflow plume. A conceptual model based on the available data can be simulated in the native state using parameters that fall within observed ranges. The model temperatures, recharge rates, and fluid travel times are sensitive to the permeability in the Mineral Mountains. The simulation results suggests the presence of a magma chamber at depth as the likely heat source. A two-dimensional study of the hydrothermal system can be used to establish boundary conditions for further study of the geothermal reservoir.

Faulder, D.D.

1991-01-01T23:59:59.000Z

70

Conceptual geologic model and native state model of the Roosevelt Hot Springs hydrothermal system  

DOE Green Energy (OSTI)

A conceptual geologic model of the Roosevelt Hot Springs hydrothermal system was developed by a review of the available literature. The hydrothermal system consists of a meteoric recharge area in the Mineral Mountains, fluid circulation paths to depth, a heat source, and an outflow plume. A conceptual model based on the available data can be simulated in the native state using parameters that fall within observed ranges. The model temperatures, recharge rates, and fluid travel times are sensitive to the permeability in the Mineral Mountains. The simulation results suggests the presence of a magma chamber at depth as the likely heat source. A two-dimensional study of the hydrothermal system can be used to establish boundary conditions for further study of the geothermal reservoir. 33 refs., 9 figs.

Faulder, D.D.

1991-01-01T23:59:59.000Z

71

Products of an Artificially Induced Hydrothermal System at Yucca Mountain  

DOE Green Energy (OSTI)

Studies of mineral deposition in the recent geologic past at Yucca Mountain, Nevada, address competing hypotheses of hydrothermal alteration and deposition from percolating groundwater. The secondary minerals being studied are calcite-opal deposits in fractures and lithophysal cavities of ash-flow tuffs exposed in the Exploratory Studies Facility (ESF), a 7.7-km tunnel excavated by the Yucca Mountain Site Characterization Project within Yucca Mountain. An underground field test in the ESF provided information about the minerals deposited by a short-lived artificial hydrothermal system and an opportunity for comparison of test products with the natural secondary minerals. The heating phase lasted nine months, followed by a nine-month cooling period. Natural pore fluids were the only source of water during the thermal test. Condensation and reflux of water driven away from the heater produced fluid flow in certain fractures and intersecting boreholes. The mineralogic products of the thermal test are calcite-gypsum aggregates of less than 4-micrometer crystals and amorphous silica as glassy scale less than 0.2 mm thick and as mounds of tubules with diameters less than 0.7 micrometers. The minute crystal sizes of calcite and gypsum from the field test are very different from the predominantly coarser calcite crystals (up to cm scale) in natural secondary-mineral deposits at the site. The complex micrometer-scale textures of the amorphous silica differ from the simple forms of opal spherules and coatings in the natural deposits, even though some natural spherules are as small as 1 micrometer. These differences suggest that the natural minerals, especially if they were of hydrothermal origin, may have developed coarser or simpler forms during subsequent episodes of dissolution and redeposition. The presence of gypsum among the test products and its absence from the natural secondary-mineral assemblage may indicate a higher degree of evaporation during the test than during the deposition of natural calcite-opal deposits.

S. Levy

2000-08-07T23:59:59.000Z

72

The hydrothermal system in central Twin Falls County, Idaho  

DOE Green Energy (OSTI)

This report describes the results of a study to define the areal extent and thickness of the hydrothermal reservoir in Twin Falls County and to propose a generalized conceptual model of the system. Specific objectives of the study, done in cooperation with the Idaho Department of Water Resources, were to evaluate the existing resource as to its volume, temperature, pressure, and water chemistry, and to determine the effects of present development on the resource. The study was limited to Twin Falls County. Some geologic, geochemical, and hydrologic data for the hydrothermal system were available from earlier studies. However, information about the subsurface at depths greater than 1000 feet was sparse. One well for which data were available was drilled to 2525 feet; several others were drilled to depths between 1200 and 2200 feet. Direct-current electrical resistivity soundings conducted during the summer of 1985 as part of the study provided valuable information about the subsurface at depths less than about 6000 feet. Interpretation of computer-generated subsurface profiles constructed from the soundings provided the basis for determining the thickness of the Idavada Volcanics over much of the study area. 42 refs., 9 figs., 3 tabs.

Lewis, R.E.; Young, H.W.

1989-01-01T23:59:59.000Z

73

GEA Honors Geothermal Leaders - Energy Innovation Portal  

The project would produce power and cascade the remaining energy to support an existing geothermal district heating system and future greenhouse and ...

74

Colorado's hydrothermal resource base: an assessment  

DOE Green Energy (OSTI)

As part of its effort to more accurately describe the nations geothrmal resource potential, the US Department of Energy/Division of Geothermal Energy contracted with the Colorado Geological survey to appraise the hydrothermal (hot water) geothermal resources of Colorado. Part of this effort required that the amount of energy that could possibly be contained in the various hydrothermal systems in Colorado be estimated. The findings of that assessment are presented. To make these estimates the geothermometer reservoir temperatures estimated by Barrett and Pearl (1978) were used. In addition, the possible reservoir size and extent were estimated and used. This assessment shows that the total energy content of the thermal systems in Colorado could range from 4.872 x 10{sup 15} BTU's to 13.2386 x 10{sup 15} BTU's.

Pearl, R.H.

1981-01-01T23:59:59.000Z

75

A simple and efficient method for synthesizing te nanowires from CdTe nanoparticles with EDTA as shape controller under hydrothermal condition  

Science Conference Proceedings (OSTI)

We developed a simple and efficient method for synthesizing Te nanowires from CdTe nanoparticles with ethylenediaminetetraacetic acid disodium salt dehydrate (EDTA) as shape controller under hydrothermal condition. The systemcould both complete the transformation ...

Fangfang Xue; Ning Bi; Jiangong Liang; Heyou Han

2012-01-01T23:59:59.000Z

76

Surficial Extent And Conceptual Model Of Hydrothermal System At Mount  

Open Energy Info (EERE)

Surficial Extent And Conceptual Model Of Hydrothermal System At Mount Surficial Extent And Conceptual Model Of Hydrothermal System At Mount Rainier, Washington Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Surficial Extent And Conceptual Model Of Hydrothermal System At Mount Rainier, Washington Details Activities (4) Areas (2) Regions (0) Abstract: A once massive hydrothermal system was disgorged from the summit of Mount Rainier in a highly destructive manner about 5000 years ago. Today, hydrothermal processes are depositing clayey alteration products that have the potential to reset the stage for similar events in the future. Areas of active hydrothermal alteration occur in three representative settings: 1. (1) An extensive area (greater than 12,000 m2) of heated ground and slightly acidic boiling-point fumaroles at 76-82°C at

77

Hydrothermal electric and direct heat. Commercialization Phase III planning  

SciTech Connect

Nine environmental concerns have been identified: airborne effluents, waterborne effluents, noise, subsidence, enhanced seismicity, water use conflicts, land use, socioeconomic impacts, and system safety and occupational health. Resolution of these issues is expected to occur at staggered intervals over the next 8 to 10 years. Of these concerns, airborne emissions and water use conflicts are judged to have a medium likelihood of having research findings adverse to commercialization. Waterborne effluents and subsidence are also judged to have a medium likelihood. The other concerns--noise, enhanced seismicity, land use, socioeconomic impacts and system safety and occupational health--are judged to have a low likelihood of adverse findings. The overall environmental research and development plan related to hydrothermal electric and direct heat includes funds to assess the adequacy of candidate control technology options. However, it does not include the resource requirements to fully develop and demonstrate commercial control hardware, process modifications, and for strategies. The conclusions, stated as probabilities, are given.

Clusen, R.C.

1978-09-01T23:59:59.000Z

78

Relations Of Ammonium Minerals At Several Hydrothermal Systems...  

Open Energy Info (EERE)

minerals at known hydrothermal systems is critical for the proper interpretation of remote sensing data and for testing of possible links to mineralization. Submicroscopic...

79

Hydrothermal Heat Discharge In The Cascade Range, Northwestern...  

Open Energy Info (EERE)

Hydrothermal heat discharge in the Cascade Range includes the heat discharged by thermal springs, by "slightly thermal" springs that are only a few degrees warmer than...

80

GEOLOGY AND HYDROTHERMAL ALTERATION OF THE RAFT RIVER GEOTHERMAL...  

Open Energy Info (EERE)

GEOLOGY AND HYDROTHERMAL ALTERATION OF THE RAFT RIVER GEOTHERMAL SYSTEM, IDAHO Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: GEOLOGY AND...

Note: This page contains sample records for the topic "hydrothermal gea development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

A Helium Isotope Perspective On The Dixie Valley, Nevada, Hydrothermal...  

Open Energy Info (EERE)

Helium Isotope Perspective On The Dixie Valley, Nevada, Hydrothermal System Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Helium Isotope...

82

Why Sequence Bacteria in Deep Sea Hydrothermal Vents?  

NLE Websites -- All DOE Office Websites (Extended Search)

Bacteria in Deep Sea Hydrothermal Vents? The project focuses on using single-cell genomics to sequence nearly a dozen genomes of uncultivated bacteria that are found in...

83

Indications of mineral zoning in a fossil hydrothermal system at the Meager Creek geothermal prospect, British Columbia, Canada, from induced polarization studies  

SciTech Connect

By measuring the induced-polarization parameters m (chargeability) and tau (time-constant) we have found evidence that the center of a presumed fossil hydrothermal system at Meager Creek, British Columbia, lies south of the main manifestation of the present-day convective hydrothermal system. What implication this finding has for development of the present-day system is unknown. However, some of the fractures formed during the development of the fossil hydrothermal system may serve as conduits for fluids of the present-day system. The analysis is limited by the lack of availability of a good subsurface distribution of core samples. Nevertheless, a surface induced-polarization survey is expected to yield information about the geometry of the fossil system. Such knowledge would have implications not only for Meager Creek but for other hydrothermal systems of Cascades volcano type. 16 refs., 15 figs., 1 tab.

Ward, S.H.; Zhao, J.X.; Groenwald, J.; Moore, J.N.

1985-05-01T23:59:59.000Z

84

Low temperature hydrothermal destruction of organics in Hanford tank wastes  

SciTech Connect

The objective of this work is to evaluate and develop a low temperature hydrothermal process (HTP) for the destruction of organics that are present wastes temporarily stored in underground tanks at the Hanford Site. Organic compounds contribute to tank waste safety issues, such as hydrogen generation. Some organic compounds act as complexants, promoting the solubility of radioactive constituents such as {sup 90}Sr and {sup 241}Am, which is undesirable for waste pretreatment processing. HTP is thermal-chemical autogenous processing method that is typically operated between 250{degrees}C and 375{degrees}C and approximately 200 atm. Testing with simulated tank waste, containing a variety of organics has been performed. The distribution of strontium, cesium and bulk metals between the supernatant and solid phases as a function of the total organic content of the waste simulant will be presented. Test results using simulant will be compared with similar tests conducted using actual radioactive waste.

Orth, R.J.; Elmore, M.R.; Zacher, A.H.; Neuenschwander, G.G.; Schmidt, A.J.; Jones, E.O.; Hart, T.R.; Poshusta, J.C.

1994-08-01T23:59:59.000Z

85

Particle swarm optimization technique based short-term hydrothermal scheduling  

Science Conference Proceedings (OSTI)

Particle swarm optimization is applied to determine the optimal hourly schedule of power generation in a hydrothermal power system. A multi-reservoir cascaded hydroelectric system with a nonlinear relationship between water discharge rate, net head and ... Keywords: Cascaded reservoirs, Hydrothermal scheduling, Particle swarm optimization

K. K. Mandal; M. Basu; N. Chakraborty

2008-09-01T23:59:59.000Z

86

Polymer-assisted hydrothermal synthesis of hierarchically arranged hydroxyapatite nanoceramic  

Science Conference Proceedings (OSTI)

Flower-like hydroxyapatite (HA) nanostructures were synthesized by a polymer-assisted hydrothermal method. The thickness of the petals/plates decreased from 200 nm to 40 nm as the polymer concentration increased. The thickness also decreased as the hydrothermal ...

A. Joseph Nathanael, Sung Soo Han, Tae Hwan Oh

2013-01-01T23:59:59.000Z

87

Property:IdentifiedHydrothermalPotential | Open Energy Information  

Open Energy Info (EERE)

IdentifiedHydrothermalPotential IdentifiedHydrothermalPotential Jump to: navigation, search Property Name IdentifiedHydrothermalPotential Property Type Quantity Description Conventional hydrothermal electricity generation potential from identified hydrothermal sites, as determined by the USGS 2008 Geothermal Resource Assessment (Williams et al, 2008). Use this property to express potential electric energy generation, such as Nameplate Capacity. The default unit is megawatts (MW). For spatial capacity, use property Volume. Acceptable units (and their conversions) are: 1 MW,MWe,megawatt,Megawatt,MegaWatt,MEGAWATT,megawatts,Megawatt,MegaWatts,MEGAWATT,MEGAWATTS 1000 kW,kWe,KW,kilowatt,KiloWatt,KILOWATT,kilowatts,KiloWatts,KILOWATT,KILOWATTS 1000000 W,We,watt,watts,Watt,Watts,WATT,WATTS

88

Property:PotentialGeothermalHydrothermalGeneration | Open Energy  

Open Energy Info (EERE)

PotentialGeothermalHydrothermalGeneration PotentialGeothermalHydrothermalGeneration Jump to: navigation, search Property Name PotentialGeothermalHydrothermalGeneration Property Type Quantity Description The estimated potential energy generation from Geothermal Hydrothermal for a particular place. Use this type to express a quantity of energy. The default unit for energy on OpenEI is the Kilowatt hour (kWh), which is 3,600,000 Joules. http://en.wikipedia.org/wiki/Unit_of_energy It's possible types are Watt hours - 1000 Wh, Watt hour, Watthour Kilowatt hours - 1 kWh, Kilowatt hour, Kilowatthour Megawatt hours - 0.001 MWh, Megawatt hour, Megawatthour Gigawatt hours - 0.000001 GWh, Gigawatt hour, Gigawatthour Joules - 3600000 J, Joules, joules Pages using the property "PotentialGeothermalHydrothermalGeneration"

89

Relations Of Ammonium Minerals At Several Hydrothermal Systems In The  

Open Energy Info (EERE)

Relations Of Ammonium Minerals At Several Hydrothermal Systems In The Relations Of Ammonium Minerals At Several Hydrothermal Systems In The Western Us Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Relations Of Ammonium Minerals At Several Hydrothermal Systems In The Western Us Details Activities (5) Areas (1) Regions (0) Abstract: Ammonium bound to silicate and sulfate minerals has recently been located at several major hydrothermal systems in the western U.S. utilizing newly-discovered near-infrared spectral properties. Knowledge of the origin and mineralogic relations of ammonium minerals at known hydrothermal systems is critical for the proper interpretation of remote sensing data and for testing of possible links to mineralization. Submicroscopic analysis of ammonium minerals from two mercury- and gold-bearing

90

Fluid Inclusion Gas Compositions From An Active Magmatic-Hydrothermal  

Open Energy Info (EERE)

Fluid Inclusion Gas Compositions From An Active Magmatic-Hydrothermal Fluid Inclusion Gas Compositions From An Active Magmatic-Hydrothermal System- A Case Study Of The Geysers Geothermal Field, Usa Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Fluid Inclusion Gas Compositions From An Active Magmatic-Hydrothermal System- A Case Study Of The Geysers Geothermal Field, Usa Details Activities (1) Areas (1) Regions (0) Abstract: Hydrothermal alteration and the active vapor-dominated geothermal system at The Geysers, CA are related to a composite hypabyssal granitic pluton emplaced beneath the field 1.1 to 1.2 million years ago. Deep drill holes provide a complete transect across the thermal system and samples of the modern-day steam. The hydrothermal system was liquid-dominated prior to formation of the modern vapor-dominated regime at 0.25 to 0.28 Ma. Maximum

91

Property:UndiscoveredHydrothermalPotential | Open Energy Information  

Open Energy Info (EERE)

UndiscoveredHydrothermalPotential UndiscoveredHydrothermalPotential Jump to: navigation, search Property Name UndiscoveredHydrothermalPotential Property Type Quantity Description Estimated conventional hydrothermal electricity generation potential from undiscovered hydrothermal sites, as determined by the USGS 2008 Geothermal Resource Assessment (Williams et al, 2008). Use this property to express potential electric energy generation, such as Nameplate Capacity. The default unit is megawatts (MW). For spatial capacity, use property Volume. Acceptable units (and their conversions) are: 1 MW,MWe,megawatt,Megawatt,MegaWatt,MEGAWATT,megawatts,Megawatt,MegaWatts,MEGAWATT,MEGAWATTS 1000 kW,kWe,KW,kilowatt,KiloWatt,KILOWATT,kilowatts,KiloWatts,KILOWATT,KILOWATTS 1000000 W,We,watt,watts,Watt,Watts,WATT,WATTS

92

Hydrothermal system at Newberry Volcano, Oregon  

SciTech Connect

Results of recent geological and geophysical studies at Newberry Volcano have been incorporated into conceptual and numerical models of a magma-based hydrothermal system. Numerical simulations begin with emplacement of a small magma body, the presumed source of silicic eruptions at Newberry that began about 10,000 B.P., into a thermal regime representing 100,000 years of cooling of a large underlying intrusion. Simulated flow patterns and thermal histories for three sets of hypothetical permeability values are compatible with data from four geothermal drill holes on the volcano. Meteoric recharge cools the caldera-fill deposits, but thermal water moving up a central conduit representing a permeable volcanic vent produces temperatures close to those observed in drill holes within the caldera. Meteoric recharge from the caldera moves down the flanks and creates a near-isothermal zone that extends several hundred meters below the water table, producing temperature profiles similar to those observed in drill holes on the flanks. The temperatures observed in drill holes on the flanks are not influenced by the postulated Holocene magma body. The elevated temperature gradients measured in the lower portions of these holes may be related to the cumulative effect of older intrusions. The models also indicate that meteoric recharge to the deep hydrothermal system probably originates within or near the caldera. Relatively low fluid velocities at depth suggest that at least a significant fraction of the thermal fluid may be very old.

Sammel, E.A.; Ingebritsen, S.E.; Mariner, R.H.

1988-09-10T23:59:59.000Z

93

Acid-Base Behavior in Hydrothermal Processing of Wastes - Final Report  

Science Conference Proceedings (OSTI)

A major obstacle to development of hydrothermal oxidation technology has been a lack of scientific knowledge of chemistry in hydrothermal solution above 350 C, particularly acid-base behavior, and transport phenomena, which is needed to understand corrosion, metal-ion complexation, and salt precipitation and recovery. Our objective has been to provide this knowledge with in situ UV-visible spectroscopic measurements and fully molecular computer simulation. Our recent development of relatively stable organic UV-visible pH indicators for supercritical water oxidation offers the opportunity to characterize buffers and to monitor acid-base titrations. These results have important implications for understanding reaction pathways and yields for decomposition of wastes in supercritical water.

Johnston, K.; Rossky, P.

2000-12-01T23:59:59.000Z

94

Hydrothermal cements for use in the completion of geothermal wells. Final report  

DOE Green Energy (OSTI)

A research program to develop an improved cement for use in high-temperature geothermal wells was carried out. The work involved in the selection and evaluation of an aluminum hydroxide-cured cement from the SwRI family of hydrothermal cements for this use are described. The physical testing program is described; the topics discussed include placement ability, compressive and bond strengths, permeability to water, compatibility to drilling muds, corrosion properties, and thermal properties.

Not Available

1979-09-01T23:59:59.000Z

95

Hydrothermal time analysis of seed dormancy in true (botanical) potato seeds  

E-Print Network (OSTI)

germination and shoot-radicle elongation of Ambrosia artemisiifolia. Weed Science 47, 557­562. Hydrothermal

Bradford, Kent

96

Correlation of hydrothermal sericite composition with permeability and  

Open Energy Info (EERE)

Correlation of hydrothermal sericite composition with permeability and Correlation of hydrothermal sericite composition with permeability and temperature, Coso Hot Springs geothermal field, Inyo County, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Correlation of hydrothermal sericite composition with permeability and temperature, Coso Hot Springs geothermal field, Inyo County, California Details Activities (1) Areas (1) Regions (0) Abstract: Petrographic and geochemical analyses of cuttings from six wells in the Coso Hot Springs geothermal field show a systematic variation in the occurrence, texture, and composition of sericite that can be correlated with high permeability production zones and temperature. The wells studied intersect rhyolitic dikes and sills in the fractured granitic and dioritic

97

Using toughreact to model reactive fluid flow and geochemical transport in hydrothermal systems  

DOE Green Energy (OSTI)

The interaction between hydrothermal fluids and the rocks through which they migrate alters the earlier formed primary minerals and leads to the formation of secondary minerals, resulting in changes in the physical and chemical properties of the system. We have developed a comprehensive numerical simulator, TOUGHREACT, which considers nonisothermal multi-component chemical transport in both liquid and gas phases. A variety of subsurface thermo-physical-chemical processes is considered under a wide range of conditions of pressure, temperature, water saturation, and ionic strength. The code can be applied to problems in fundamental analysis of the hydrothermal systems and in the exploration of geothermal reservoirs including chemical evolution, mineral alteration, mineral scaling, changes of porosity and permeability, and mineral recovery from geothermal fluids.

Xu, Tianfu; Sonnenthal, Eric; Spycher, Nicolas; Pruess, Karsten

2003-07-31T23:59:59.000Z

98

Exploratory benefit-cost analysis of environmental controls on hydrothermal energy  

DOE Green Energy (OSTI)

A study of the value of environmental benefits generated by environmental regulation of hydrothermal sites was initiated to compare these benefits with the estimated costs of regulation. Primary objectives were to 1) evaluate the environmental damages caused by unregulated hydrothermal resource development, 2) use existing environmental and economic data to estimate the dollar value of preventing expected environmental damages at two sites, and 3) compare the benefits and costs of preventing the damages. The sites chosen for analyses were in the Imperial Valley at Heber and Niland, California. Reasons for this choice were 1) there is a high level of commercial interest in developing the Heber known geothermal resource area (KGRA) and the Salton Sea KGRA; 2) the potential for environmental damage is high; 3) existing data bases for these two sites are more comprehensive than at other sites. The primary impacts analyzed were those related to hydrogen sulfide (H/sub 2/S) emissions and those related to disposal of spent hydrothermal brine. (MHR)

Scott, M.J.; Wells, K.D.; Currie, J.W.; King, M.J.

1981-02-01T23:59:59.000Z

99

Chemical and isotopic characteristics of the coso east flank hydrothermal  

Open Energy Info (EERE)

isotopic characteristics of the coso east flank hydrothermal isotopic characteristics of the coso east flank hydrothermal fluids: implications for the location and nature of the heat source Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Chemical and isotopic characteristics of the coso east flank hydrothermal fluids: implications for the location and nature of the heat source Details Activities (1) Areas (1) Regions (0) Abstract: Fluids have been sampled from 9 wells and 2 fumaroles from the East Flank of the Coso hydrothermal system with a view to identifying, if possible, the location and characteristics of the heat source inflows into this portion of the geothermal field. Preliminary results show that there has been extensive vapor loss in the system, most probably in response to

100

Comparison Of Hydrothermal Alteration Of Carboniferous Carbonate And  

Open Energy Info (EERE)

Hydrothermal Alteration Of Carboniferous Carbonate And Hydrothermal Alteration Of Carboniferous Carbonate And Siliclastic Rocks In The Valles Caldera With Outcrops From The Socorro Caldera, New Mexico Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Comparison Of Hydrothermal Alteration Of Carboniferous Carbonate And Siliclastic Rocks In The Valles Caldera With Outcrops From The Socorro Caldera, New Mexico Details Activities (3) Areas (2) Regions (0) Abstract: Continental Scientific Drilling Program (CSDP) drill hole VC-2B (total depth 1761.7 m (5780 ft); maximum temperature 295°C) was continuously cored through the Sulphur Springs hydrothermal system in the western ring-fracture zone of the 1.14 Ma Valles caldera. Among other units, the hole penetrated 760.2 m (2494.1 ft) of Paleozoic carbonate and

Note: This page contains sample records for the topic "hydrothermal gea development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Oxygen And Carbon Isotope Ratios Of Hydrothermal Minerals From Yellowstone  

Open Energy Info (EERE)

Oxygen And Carbon Isotope Ratios Of Hydrothermal Minerals From Yellowstone Oxygen And Carbon Isotope Ratios Of Hydrothermal Minerals From Yellowstone Drill Cores Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Oxygen And Carbon Isotope Ratios Of Hydrothermal Minerals From Yellowstone Drill Cores Details Activities (3) Areas (1) Regions (0) Abstract: Oxygen and carbon isotope ratios were measured for hydrothermal minerals (silica, clay and calcite) from fractures and vugs in altered rhyolite, located between 28 and 129 m below surface (in situ temperatures ranging from 81 to 199°C) in Yellowstone drill holes. The purpose of this study was to investigate the mechanism of formation of these minerals. The Δ18O values of the thirty-two analyzed silica samples (quartz, chalcedony, α-cristobalite, and β-cristobalite) range from -7.5 to +2.8‰. About one

102

Property:PotentialGeothermalHydrothermalCapacity | Open Energy Information  

Open Energy Info (EERE)

PotentialGeothermalHydrothermalCapacity PotentialGeothermalHydrothermalCapacity Jump to: navigation, search Property Name PotentialGeothermalHydrothermalCapacity Property Type Quantity Description The nameplate capacity technical potential from Geothermal Hydrothermal for a particular place. Use this property to express potential electric energy generation, such as Nameplate Capacity. The default unit is megawatts (MW). For spatial capacity, use property Volume. Acceptable units (and their conversions) are: 1 MW,MWe,megawatt,Megawatt,MegaWatt,MEGAWATT,megawatts,Megawatt,MegaWatts,MEGAWATT,MEGAWATTS 1000 kW,kWe,KW,kilowatt,KiloWatt,KILOWATT,kilowatts,KiloWatts,KILOWATT,KILOWATTS 1000000 W,We,watt,watts,Watt,Watts,WATT,WATTS 1000000000 mW,milliwatt,milliwatts,MILLIWATT,MILLIWATTS 0.001 GW,gigawatt,gigawatts,Gigawatt,Gigawatts,GigaWatt,GigaWatts,GIGAWATT,GIGAWATTS

103

Fluid Inclusion Gas Compositions From An Active Magmatic-Hydrothermal...  

Open Energy Info (EERE)

provide a complete transect across the thermal system and samples of the modern-day steam. The hydrothermal system was liquid-dominated prior to formation of the modern...

104

Forecasting Electricity Prices in an Optimization Hydrothermal Problem  

Science Conference Proceedings (OSTI)

This paper presents an economic dispatch algorithm in a hydrothermal system within the framework of a competitive and deregulated electricity market. The optimization problem of one firm is described

J. M. Matas; L. Bayn; P. Surez; A. Argelles; J. Taboada

2007-01-01T23:59:59.000Z

105

Base hydrolysis and hydrothermal processing of PBX-9404  

SciTech Connect

Base hydrolysis in combination with hydrothermal processing has been proposed as an environmentally acceptable alternative to open burning/open detonation for degradation and destruction of high explosives. In this report, the authors examine gaseous and aqueous products of base hydrolysis of the HMX-based plastic bonded explosive, PBX-9404. They also examined products from the subsequent hydrothermal treatment of the base hydrolysate. The gases produced from hydrolysis of PBX-9404 are ammonia, nitrous oxide, and nitrogen. Major aqueous products are sodium formate, acetate, nitrate, and nitrite, but not all carbon products have been identified. Hydrothermal processing of base hydrolysate destroyed up to 98% of the organic carbon in solution, and higher destruction efficiencies are possible. Major gas products detected from hydrothermal processing were nitrogen and nitrous oxide.

Flesner, R.L.; Spontarelli, T.; Dell`Orco, P.C.; Sanchez, J.A.

1994-11-01T23:59:59.000Z

106

Sources Of Chloride In Hydrothermal Fluids From The Valles Caldera...  

Open Energy Info (EERE)

Sources Of Chloride In Hydrothermal Fluids From The Valles Caldera, New Mexico- A 36Cl Study Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article:...

107

Development and Validation of an Advanced Stimulation Prediction...  

Open Energy Info (EERE)

Nakagawa Targets Milestones - Develop a true three-dimensional hydro-thermal fracturing and proppant flowtransport simulator that is particularly suited for EGS reservoir...

108

Methods to enhance the characteristics of hydrothermally prepared slurry fuels  

DOE Patents (OSTI)

Methods for enhancing the flow behavior and stability of hydrothermally treated slurry fuels. A mechanical high-shear dispersion and homogenization device is used to shear the slurry fuel. Other improvements include blending the carbonaceous material with a form of coal to reduce or eliminate the flocculation of the slurry, and maintaining the temperature of the hydrothermal treatment between approximately 300.degree. to 350.degree. C.

Anderson, Chris M. (Shakopee, MN); Musich, Mark A. (Grand Forks, ND); Mann, Michael D. (Thompson, ND); DeWall, Raymond A. (Grand Forks, ND); Richter, John J. (Grand Forks, ND); Potas, Todd A. (Plymouth, MN); Willson, Warrack G. (Fairbanks, AK)

2000-01-01T23:59:59.000Z

109

Contact zones and hydrothermal systems as analogues to repository conditions  

SciTech Connect

Radioactive waste isolation efforts in the US are currently focused on examining basalt, tuff, salt, and crystalline rock as candidate rock types to encompass waste repositories. As analogues to near-field conditions, the distributions of radio- and trace-elements have been examined across contacts between these rocks and dikes and stocks that have intruded them. The intensive study of the Stripa quartz monzonite has also offered the opportunity to observe the distribution of uranium and its daughters in groundwater and its relationship to U associated with fracture-filling and alteration minerals. Investigations of intrusive contact zones to date have included (1) a tertiary stock into Precambrian gneiss, (2) a stock into ash flow tuff, (3) a rhyodacite dike into Columbia River basalt, and (4) a kimberlite dike into salt. With respect to temperature and pressure, these contact zones may be considered "worst-case scenario" analogues. Results indicate that there has been no appreciable migration of radioelements from the more radioactive intrusives into the less radioactive country rocks, either in response to the intrusions or in the fracture-controlled hydrological systems that developed following emplacement. In many cases, the radioelements are locked up in accessory minerals, suggesting that artificial analogues to these would make ideal waste forms. Emphasis should now shift to examination of active hydrothermal systems, studying the distribution of key elements in water, fractures, and alteration minerals under pressure and temperature conditions most similar to those expected in the near-field environment of a repository. 14 refs.

Wollenberg, H.A.; Flexser, S.

1984-10-01T23:59:59.000Z

110

Workshop on magma/hydrothermal drilling and instrumentation  

DOE Green Energy (OSTI)

The discussions, conclusions, and recommendations of the Magma/Hydrothermal Drilling and Instrumentation Workshop, Albuquerque, NM, May 31--June 2, 1978 are summarized. Three working groups were organized as follows: Drilling Location and Environment, Drilling and Completion Technology, and Logging and Instrumentation Technology. The first group discussed potential drilling sites and the environment that could be expected in drilling to magma depth at each site. Sites suggested for early detailed evaluation as candidate drilling sites were The Geysers-Clear Lake, CA, Kilauea, HI, Long Valley-Mono Craters, CA, and Yellowstone, WY. Magma at these sites is expected to range from 3 to 10 km deep with temperatures of 800 to 1100{sup 0}C. Detailed discussions of the characteristics of each site are given. In addition, a list of geophysical measurements desired for the hole is presented. The Drilling and Completion Group discussed limitations on current rotary drilling technology as a function of depth and temperature. The group concluded that present drilling systems can be routinely used to temperatures of 200{sup 0}C and depths to 10 km; drilling to 350{sup 0}C can be accomplished with modifications of present techniques, drilling at temperatures from 350{sup 0}C to 1100{sup 0}C will require the development of new drilling techniques. A summary of the limiting factors in drilling systems is presented, and recommendations for a program directed at correcting these limitations is described. The third group discussed requirements for instrumentation and established priorities for the development of the required instruments. Of highest priority for development were high resolution temperature tools, sampling techniques (core, formation fluids), chemical probes, and communications techniques. A description of instrumentation requirements for the postulated hole is given, and the tasks necessary to develop the required devices are delineated.

Varnado, S.G.; Colp, J.L. (eds.)

1978-07-01T23:59:59.000Z

111

Periodic deep?sea hydrothermal vent activities observed by hydrophones at Mariana, Okinawa, and Mid?Atlantic Ridge  

Science Conference Proceedings (OSTI)

Deep?sea hydrothermal vent activities were studied done by digital OBS/Hs(Ocean Bottom Seismometer / Hydrophone) at three hydrothermal vent areas

Kasahara Junzo; Sato Toshinori; Nishizawa Azusa; Fujioka Kantaro

1996-01-01T23:59:59.000Z

112

Development of a Hydrothermal Spallation Drilling System for...  

Open Energy Info (EERE)

this technology in an air-filled borehole created challenges related to cuttings transport and borehole stability. The Potter Drilling system uses a water based jet technology...

113

Verification of numerical models for hydrothermal plume water through field measurements at TAG  

E-Print Network (OSTI)

Hydrothermal vents discharge superheated, mineral rich water into our oceans, thereby providing a habitat for exotic chemosynthetic biological communities. Hydrothermal fluids are convected upwards until they cool and reach ...

Wichers, Sacha

2005-01-01T23:59:59.000Z

114

Geochemistry of hydrothermal vent fluids from the northern Juan De Fuca Ridge  

E-Print Network (OSTI)

The presence of aqueous organic compounds derived from sedimentary organic matter has the potential to influence a range of chemical processes in hydrothermal vent environments. For example, hydrothermal alteration experiments ...

Cruse, Anna M. (Anna Marie)

2003-01-01T23:59:59.000Z

115

K-Ar Dates Of Hydrothermal Clays From Core Hole Vc-2B, Valles...  

Open Energy Info (EERE)

icon K-Ar Dates Of Hydrothermal Clays From Core Hole Vc-2B, Valles Caldera, New Mexico And Their Relation To Alteration In A Large Hydrothermal System Jump to: navigation,...

116

Spatial And Temporal Geochemical Trends In The Hydrothermal System Of  

Open Energy Info (EERE)

Spatial And Temporal Geochemical Trends In The Hydrothermal System Of Spatial And Temporal Geochemical Trends In The Hydrothermal System Of Yellowstone National Park- Inferences From River Solute Fluxes Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Spatial And Temporal Geochemical Trends In The Hydrothermal System Of Yellowstone National Park- Inferences From River Solute Fluxes Details Activities (2) Areas (1) Regions (0) Abstract: We present and analyze a chemical dataset that includes the concentrations and fluxes of HCO3-, SO42-, Cl-, and F- in the major rivers draining Yellowstone National Park (YNP) for the 2002-2004 water years (1 October 2001 - 30 September 2004). The total (molar) flux in all rivers decreases in the following order, HCO3- > Cl- > SO42- > F-, but each river is characterized by a distinct chemical composition, implying large-scale

117

Adventive Hydrothermal Circulation On Stromboli Volcano (Aeolian Islands,  

Open Energy Info (EERE)

Adventive Hydrothermal Circulation On Stromboli Volcano (Aeolian Islands, Adventive Hydrothermal Circulation On Stromboli Volcano (Aeolian Islands, Italy) Revealed By Geophysical And Geochemical Approaches- Implications For General Fluid Flow Models On Volcanoes Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Adventive Hydrothermal Circulation On Stromboli Volcano (Aeolian Islands, Italy) Revealed By Geophysical And Geochemical Approaches- Implications For General Fluid Flow Models On Volcanoes Details Activities (0) Areas (0) Regions (0) Abstract: On March 15th 2007 a paroxysmal explosion occurred at the Stromboli volcano. This event generated a large amount of products, mostly lithic blocks, some of which impacted the ground as far as down to 200 m a.s.l., about 1.5 km far away from the active vents. Two days after the

118

Hydrothermal Heat Discharge In The Cascade Range, Northwestern United  

Open Energy Info (EERE)

Page Page Edit History Facebook icon Twitter icon » Hydrothermal Heat Discharge In The Cascade Range, Northwestern United States Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Hydrothermal Heat Discharge In The Cascade Range, Northwestern United States Details Activities (3) Areas (1) Regions (0) Abstract: Hydrothermal heat discharge in the Cascade Range includes the heat discharged by thermal springs, by "slightly thermal" springs that are only a few degrees warmer than ambient temperature, and by fumaroles. Thermal-spring heat discharge is calculated on the basis of chloride-flux measurements and geothermometer temperatures and totals ~ 240 MW in the U.S. part of the Cascade Range, excluding the transient post-1980 discharge

119

A Helium Isotope Perspective On The Dixie Valley, Nevada, Hydrothermal  

Open Energy Info (EERE)

Helium Isotope Perspective On The Dixie Valley, Nevada, Hydrothermal Helium Isotope Perspective On The Dixie Valley, Nevada, Hydrothermal System Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Helium Isotope Perspective On The Dixie Valley, Nevada, Hydrothermal System Details Activities (3) Areas (1) Regions (0) Abstract: Fluids from springs, fumaroles, and wells throughout Dixie Valley, NV were analyzed for noble gas abundances and isotopic compositions. The helium isotopic compositions of fluids produced from the Dixie Valley geothermal field range from 0.70 to 0.76 Ra, are among the highest values in the valley, and indicate that similar to 7.5% of the total helium is derived from the mantle. A lack of recent volcanics or other potential sources requires flow of mantle-derived helium up along the

120

Fractionation of Boron Isotopes in Icelandic Hydrothermal Systems  

DOE Green Energy (OSTI)

Boron isotope ratios have been determined in a variety of different geothermal waters from hydrothermal systems across Iceland. Isotope ratios from the high temperature meteoric water recharged systems reflect the isotope ratio of the host rocks without any apparent fractionation. Seawater recharged geothermal systems exhibit more positive {delta}{sup 11}B values than the meteoric water recharged geothermal systems. Water/rock ratios can be assessed from boron isotope ratios in the saline hydrothermal systems. Low temperature hydrothermal systems also exhibit more positive {delta}{sup 11}B than the high temperature systems, indicating fractionation of boron due to adsorption of the lighter isotope onto secondary minerals. Fractionation of boron in carbonate deposits may indicate the level of equilibrium attained within the systems.

Aggarwal, J.K.; Palmer, M.R.

1995-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Volatiles in hydrothermal fluids- A mass spectrometric study of fluid  

Open Energy Info (EERE)

Volatiles in hydrothermal fluids- A mass spectrometric study of fluid Volatiles in hydrothermal fluids- A mass spectrometric study of fluid inclusions from active geothermal systems Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Volatiles in hydrothermal fluids- A mass spectrometric study of fluid inclusions from active geothermal systems Details Activities (4) Areas (4) Regions (0) Abstract: A system for analysis of inclusion gas contents based upon quadrupole mass spectrometry has been designed, assembled and tested during the first 7 months of funding. The system is currently being tested and calibrated using inclusions with known gas contents from active geothermal systems. Analyses are in progress on inclusions from the Salton Sea, Valles Caldera, Geysers, and Coso geothermal systems. Author(s): Mckibben, M. A.

122

Integration of hydrothermal-energy economics: related quantitative studies  

DOE Green Energy (OSTI)

A comparison of ten models for computing the cost of hydrothermal energy is presented. This comparison involved a detailed examination of a number of technical and economic parameters of the various quantitative models with the objective of identifying the most important parameters in the context of accurate estimates of cost of hydrothermal energy. Important features of various models, such as focus of study, applications, marked sectors covered, methodology, input data requirements, and output are compared in the document. A detailed sensitivity analysis of all the important engineering and economic parameters is carried out to determine the effect of non-consideration of individual parameters.

Not Available

1982-08-01T23:59:59.000Z

123

Catalytic Hydrothermal Gasification of Lignin-Rich Biorefinery Residues and Algae Final Report  

DOE Green Energy (OSTI)

This report describes the results of the work performed by PNNL using feedstock materials provided by the National Renewable Energy Laboratory, KL Energy and Lignol lignocellulosic ethanol pilot plants. Test results with algae feedstocks provided by Genifuel, which provided in-kind cost share to the project, are also included. The work conducted during this project involved developing and demonstrating on the bench-scale process technology at PNNL for catalytic hydrothermal gasification of lignin-rich biorefinery residues and algae. A technoeconomic assessment evaluated the use of the technology for energy recovery in a lignocellulosic ethanol plant.

Elliott, Douglas C.; Neuenschwander, Gary G.; Hart, Todd R.; Rotness, Leslie J.; Zacher, Alan H.; Santosa, Daniel M.; Valkenburg, Corinne; Jones, Susanne B.; Tjokro Rahardjo, Sandra A.

2009-11-03T23:59:59.000Z

124

Discernment of two opposing reports on the hydrological effects of a hydrothermal power plant  

DOE Green Energy (OSTI)

Two evaluations to determine the hydrological effects of a 50-megawatt hydrothermal power plant in the Jemez Mountains give dramatically different results. One shows little effect; the other, a large one. The treatments agree on some thermal-zone water supplies to the Jemez River but not on the expected changes in these flows. The primary areas of disagreement appear to be the total volume of water in the reservoir and the movement of this water to the point of withdrawal. The author (a nonhydrologist) has compared these reports but leaves final judgment of the accuracy of either evaluation for some erudite hydrologists, as some experimental data and model development are needed.

Williams, J.M.

1986-06-01T23:59:59.000Z

125

TEMPEST: A three-dimensional time-dependent computer program for hydrothermal analysis: Volume 2, Assessment and verification results  

Science Conference Proceedings (OSTI)

During the course of the TEMPEST computer code development a concurrent effort was conducted to assess the code's performance and the validity of computed results. The results of this work are presented in this document. The principal objective of this effort was to assure the code's computational correctness for a wide range of hydrothermal phenomena typical of fast breeder reactor application. 47 refs., 94 figs., 6 tabs.

Eyler, L.L.; Trent, D.S.; Budden, M.J.

1983-09-01T23:59:59.000Z

126

The Hydrothermal Chemistry of Gold, Arsenic, Antimony, Mercury and Silver  

DOE Green Energy (OSTI)

A comprehensive thermodynamic database based on the Helgeson-Kirkham-Flowers (HKF) equation of state was developed for metal complexes in hydrothermal systems. Because this equation of state has been shown to accurately predict standard partial molal thermodynamic properties of aqueous species at elevated temperatures and pressures, this study provides the necessary foundation for future exploration into transport and depositional processes in polymetallic ore deposits. The HKF equation of state parameters for gold, arsenic, antimony, mercury, and silver sulfide and hydroxide complexes were derived from experimental equilibrium constants using nonlinear regression calculations. In order to ensure that the resulting parameters were internally consistent, those experiments utilizing incompatible thermodynamic data were re-speciated prior to regression. Because new experimental studies were used to revise the HKF parameters for H2S0 and HS-1, those metal complexes for which HKF parameters had been previously derived were also updated. It was found that predicted thermodynamic properties of metal complexes are consistent with linear correlations between standard partial molal thermodynamic properties. This result allowed assessment of several complexes for which experimental data necessary to perform regression calculations was limited. Oxygen fugacity-temperature diagrams were calculated to illustrate how thermodynamic data improves our understanding of depositional processes. Predicted thermodynamic properties were used to investigate metal transport in Carlin-type gold deposits. Assuming a linear relationship between temperature and pressure, metals are predicted to predominantly be transported as sulfide complexes at a total aqueous sulfur concentration of 0.05 m. Also, the presence of arsenic and antimony mineral phases in the deposits are shown to restrict mineralization within a limited range of chemical conditions. Finally, at a lesser aqueous sulfur concentration of 0.01 m, host rock sulfidation can explain the origin of arsenic and antimony minerals within the paragenetic sequence.

Bessinger, Brad; Apps, John A.

2003-03-23T23:59:59.000Z

127

Tracing element sources of hydrothermal mineral deposits: REE and ...  

Science Conference Proceedings (OSTI)

inclusion studies are the only way to obtain direct evidence from these ... and eastern part of the Derbyshire Dome (Fig. 1). The ... calcite is more abundant in the western part of the vein ...... and hydrothermal fluids, it is hard to understand why.

128

Fundamental Chemistry And Thermodynamics Of Hydrothermal Oxidation Processes  

DOE Green Energy (OSTI)

Hydrothermal oxidation (HTO) is a promising technology for the treatment of aqueous-fluid hazardous and mixed waste streams. Waste streams identified as likely candidates for treatment by this technology are primarily aqueous fluids containing hazardous organic compounds, and often containing inorganic compounds including radioisotopes (mixed wastes). These wastes are difficult and expensive to treat by conventional technologies (e.g. incineration) due to their high water content; in addition, incineration can lead to concerns related to stack releases. An especially attractive potential advantage of HTO over conventional treatment methods is the total containment of all reaction products within the overall system. The potential application of hydrothermal oxidation (HTO) technology for the treatment of DOE hazardous or mixed wastes has been uncertain due to concerns about safe and efficient operation of the technology. In principle, aqueous DOE wastes, including hazardous an d mixed waste, can be treated with this technology. Oxidation reactions are carried out in the aqueous phase at high temperatures ({approx}600 C), effectively converting organic waste constituents to nonhazardous materials (e.g., CO2). Inorganic materials which become insoluble in supercritical water may precipitate as scales adhering to components of the reactor, limiting reactor availability and necessitating frequent cleaning of the system. Also, most hazardous organic compounds contain heteroatoms (other than carbon, hydrogen, and oxygen). These heteroatoms, including halides (F, Cl, Br, I), sulfur, phosphorus, and some nitrogen groups, form strong mineral acids on oxidation of the organic compounds, resulting in a solution having low pH and high oxidation potential. This combination, in conjunction with the high temperatures and high fluid densities attained in both the heating and cooling regions of an HTO reactor, can lead to corrosion of structural materials (usually metal s) anticipated for use in HTO reactor construction. Methods have been suggested for mitigating the problems arising from the production of mineral acids and insoluble solids in HTO processes (Barnes et al., 1993). Previous work in this Laboratory centered on the problems arising from the presence of corrosive or insoluble inorganic compounds in HTO fluids (Simonson et al., 1993, 1994, 1995). However, significant gaps in our knowledge of process chemistry remained at the initiation of this project. It was not possible to determine accurately the properties of coexisting fluid phases; the solubilities of radioactive components of mixed wastes were unknown at high temperatures; and molecular level understanding of interparticle interactions was needed for reliable extrapolation of phenomenological equations for solution behavior beyond the range of experimental results. The present project was undertaken to address these deficiencies. The project was undertaken to provide fundamental information needed to support deployment decisions related to HTO technology, and no innovations in the technology per se were anticipated. Rather, the innovations of this project involved applying new or existing experimental and modeling approaches to studies of aqueous inorganic reactions and properties under the rigorous anticipated HTO operating conditions. This work was made possible in part through the support of researchers at ORNL and the University of Tennessee, Knoxville, by the Division of Chemical Sciences, Geosciences and Biosciences, Office of Basic Energy Sciences of the Department of Energy. This support has allowed significant, unique experimental and 2 computational resources to be developed for studies of aqueous solution chemistry at high temperatures and pressures.

Simonson, J.M.

2001-12-31T23:59:59.000Z

129

Selected geothermal resources data: hydrothermal convection systems in the states of Alaska, Arizona, California, Colorado, Hawaii, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Washington, and Wyoming  

DOE Green Energy (OSTI)

Data collected as part of the U.S. Geological Survey's research and land classification programs, from professional publications, and industry sources has been compiled in computer format. Location, surface manifestations, chemistry, physical properties, exploratory and development work, and references pertinent to 290 hydrothermal convection systems comprise the data base.

Renner, J.L.

1976-02-01T23:59:59.000Z

130

Benefit-cost analysis of DOE's Current Federal Program to increase hydrothermal resource utilization. Final report  

SciTech Connect

The impact of DOE's Current Federal Program on the commercialization of hydrothermal resources between 1980 and 2000 is analyzed. The hydrothermal resources of the United States and the types of DOE activities used to stimulate the development of these resources for both electric power and direct heat use are described briefly. The No Federal Program and the Current Federal Program are then described in terms of funding levels and the resultant market penetration estimates through 2000. These market penetration estimates are also compared to other geothermal utilization forecasts. The direct benefits of the Current Federal Program are next presented for electric power and direct heat use applications. An analysis of the external impacts associated with the additional hydrothermal resource development resulting from the Current Federal Program is also provided. Included are environmental effects, national security/balance-of-payments improvements, socioeconomic impacts and materials requirements. A summary of the analysis integrating the direct benefits, external impacts and DOE program costs concludes the report.

1981-12-10T23:59:59.000Z

131

Enhanced sludge processing of HLW: Hydrothermal oxidation of chromium, technetium, and complexants by nitrate. 1997 mid-year progress report  

SciTech Connect

'Treatment of High Level Waste (HLW) is the second most costly problem identified by OEM. In order to minimize costs of disposal, the volume of HLW requiring vitrification and long term storage must be reduced. Methods for efficient separation of chromium from waste sludges, such as the Hanford Tank Wastes (HTW), are key to achieving this goal since the allowed level of chromium in high level glass controls waste loading. At concentrations above 0.5 to 1.0 wt.% chromium prevents proper vitrification of the waste. Chromium in sludges most likely exists as extremely insoluble oxides and minerals, with chromium in the plus III oxidation state [1]. In order to solubilize and separate it from other sludge components, Cr(III) must be oxidized to the more soluble Cr(VI) state. Efficient separation of chromium from HLW could produce an estimated savings of $3.4B[2]. Additionally, the efficient separation of technetium [3], TRU, and other metals may require the reformulation of solids to free trapped species as well as the destruction of organic complexants. New chemical processes are needed to separate chromium and other metals from tank wastes. Ideally they should not utilize additional reagents which would increase waste volume or require subsequent removal. The goal of this project is to apply hydrothermal processing for enhanced chromium separation from HLW sludges. Initially, the authors seek to develop a fundamental understanding of chromium speciation, oxidation/reduction and dissolution kinetics, reaction mechanisms, and transport properties under hydrothermal conditions in both simple and complex salt solutions. The authors also wish to evaluate the potential of hydrothermal processing for enhanced separations of technetium and TRU by examining technetium and TRU speciation at hydrothermal conditions optimal for chromium dissolution.'

Buelow, S.

1997-06-01T23:59:59.000Z

132

Hydrothermal systems in two areas of the Jemez volcanic field: Sulphur Springs and the Cochiti mining district  

DOE Green Energy (OSTI)

K/Ar dates and oxygen isotope data were obtained on 13 clay separates (<2 ..mu..m) of thermally altered mafic and silicic rocks from the Cochiti mining district (SE Jemez Mountains) and Continental Scientific Drilling Project (CSDP) core hole VC-2A (Sulphur Springs, Valles caldera). Illite with K/sub 2/O contents of 6.68%--10.04% is the dominant clay in the silicic rocks, whereas interstratified illite/smectites containing 1.4%--5.74% K/sub 2/O constitute the altered andesites. Two hydrothermal alteration events are recognized at the Cochiti area (8.07 m.y., n = 1, and 6.5--5.6 m.y., n = 6). The older event correlates with the waning stages of Paliza Canyon Formation andesite volcanism (greater than or equal to13 to less than or equal to8.5 m.y.), whereas the younger event correlates with intrusions and gold- and silver-bearing quartz veins associated with the Bearhead Rhyolite (7.54--5.8 m.y.). The majority of K/Ar dates in the hydrothermally altered, caldera-fill rocks of core hole VC-2A (0.83--0.66 m.y., n = 4) indicate that hydrothermal alteration developed contemporaneously with resurgence and ring fracture Valles Rhyolite domes (0.89--0.54 m.y.). One date of 0 +- 0.10 m.y. in acid-altered landslide debris of postcaldera tuffs from the upper 13 m of the core hole probably correlates with Holocene hydrothermal activity possibly associated with the final phases of the Valles Rhyolite (0.13 m.y.).

WoldeGabriel, G.

1989-03-01T23:59:59.000Z

133

Mapping Hydrothermal Upwelling and Outflow Zones: Preliminary Results from  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » Mapping Hydrothermal Upwelling and Outflow Zones: Preliminary Results from Two-Meter Temperature Data and Geologic Analysis at Lee Allen Springs and Salt Wells Basin Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Mapping Hydrothermal Upwelling and Outflow Zones: Preliminary Results from Two-Meter Temperature Data and Geologic Analysis at Lee Allen Springs and Salt Wells Basin Abstract Two-meter temperature surveys have been conducted at Salt Wells Basin and Lee-Allen Springs geothermal areas with the objective of distinguishing and

134

Hydrothermal alteration mineral mapping using hyperspectral imagery in  

Open Energy Info (EERE)

alteration mineral mapping using hyperspectral imagery in alteration mineral mapping using hyperspectral imagery in Dixie Valley, Nevada Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Hydrothermal alteration mineral mapping using hyperspectral imagery in Dixie Valley, Nevada Abstract Hyperspectral (HyMap) data was used to map the location ofoutcrops of high temperature, hydrothermally alterated minerals(including alunite, pyrophyllite, and hematite) along a 15 kmswath of the eastern front of the Stillwater Mountain Range inDixie Valley, Nevada. Analysis of this data set reveals that severaloutcrops of these altered minerals exist in the area, and thatone outcrop, roughly 1 square kilometer in area, shows abundanthigh temperature alteration. Structural analysis of the alteredregion using a

135

Lectures on geochemical interpretation of hydrothermal waters | Open Energy  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » Lectures on geochemical interpretation of hydrothermal waters Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Lectures on geochemical interpretation of hydrothermal waters Abstract The alkali carbonates, Na, K, and Li, are relatively soluble at all temperatures and generally precipitate only where there is extreme evapora- tion. In contrast, the alkaline earth carbonates. Ca. Ht, Sr, and Ba, are moderately to sparingly soluble and commonly precipitate in bydrothecmal systems. Calcite is by far the most abundant and important carbonate found

136

Why Sequence Thermoacidophiles of deep-sea hydrothermal vents?  

NLE Websites -- All DOE Office Websites (Extended Search)

Thermoacidophiles of Thermoacidophiles of deep-sea hydrothermal vents? Bacteria that live in hydrothermal vents on land and deep underwater need to be able to tolerate high temperatures and harsh, nutrient-poor environments with high concentrations of metals. As a result of living in such environments, however, these bacteria have enzymes that are stable at high temperatures, which could be useful for producing alternative fuels. Thermoacidophiles Photo: University of Delaware Aquificales bacteria are often found in thermal streams and associated with sulfide precipitation. Sequencing some of these bacterial genomes -- specifically, Thermocrinis ruber, S. rodmanii and S. kristjansonnii -- could provide researchers with so-called "anchor genomes" that would be applied in turn to studies already being done on microbial communities in

137

Mechanochemical-hydrothermal synthesis and characterization of fluoridated hydroxyapatite  

SciTech Connect

Fluoridated hydroxyapatite (FHAp) was successfully synthesized from the starting materials of CaCO{sub 3}, CaHPO{sub 4}.2H{sub 2}O, and CaF{sub 2} via a mechanochemical-hydrothermal route. X-ray diffraction, infrared spectroscopy, surface area measurements, and scanning electron microscopy identified the resultant powders as FHAp nanocrystals with the specific surface areas of up to 114.72 m{sup 2}/g. The mechanism study revealed that under such mechanochemical-hydrothermal conditions the formation reactions of FHAp were completed in two stages. The starting materials firstly reacted into a poorly crystallized calcium-deficient apatite and the complete incorporation of fluoride ions into apatite occurred in the second stage.

Zhang Huigang [Multiphase Reaction Laboratory, Institute of Process Engineering, Chinese Academy of Sciences, P.O. Box 353, Beijing 100080 (China); Zhu Qingshan [Multiphase Reaction Laboratory, Institute of Process Engineering, Chinese Academy of Sciences, P.O. Box 353, Beijing 100080 (China)]. E-mail: qszhu@home.ipe.ac.cn; Xie Zhaohui [Multiphase Reaction Laboratory, Institute of Process Engineering, Chinese Academy of Sciences, P.O. Box 353, Beijing 100080 (China)

2005-08-11T23:59:59.000Z

138

Hydrothermal system in Southern Grass Valley, Pershing County, Nevada  

DOE Green Energy (OSTI)

Southern Grass Valley is a fairly typical extensional basin in the Basin and Range province. Leach Hot Springs, in the southern part of the valley, represents the discharge end of an active hydrothermal flow system with an estimated deep aquifer temperature of 163 to 176/sup 0/C. Results of geologic, hydrologic, geophysical and geochemical investigations are discussed in an attempt to construct an internally consistent model of the system.

Welch, A.H.; Sorey, M.L.; Olmsted, F.H.

1981-01-01T23:59:59.000Z

139

High-temperature hydrothermal systems in West Yunnan Province, China  

SciTech Connect

There are more than 660 thermal springs in West Yunnan Province, 30 of which are high-temperature hydrothermal systems with reservoir temperatures above 150/sup 0/C. All thermal springs in West Yunnan are under the control of tectonics, most of them distributed at anticlinoria of metamorphic rocks and granites. This paper discusses the relationship between thermal areas and tectonics, the correlation between thermal springs in West Yunnan and North Thailand, and the geothermal prospects in West Yunnan.

Laio, Z.; Tong, W.; Liu, S.; Zhao, F.

1986-01-01T23:59:59.000Z

140

Results of acid treatments in hydrothermal direct heat experiment wells  

SciTech Connect

Matrix acid treatments have been employed in two low-to-moderate temperature hydrothermal wells with successful results. These two wells showed flow rate increases of 40% and 50%. The increased flow reduced the payback periods for the heating systems to nearly one-half of what they were before acidization. It is recommended that well designs in certain areas consider accommodating such acid stimulation techniques, if testing suggests they are warranted as a well completion tool.

Strawn, J.A.

1980-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Massive sulfide deposits and hydrothermal solutions: incremental reaction modeling of mineral precipitation and sulfur isotopic evolution  

DOE Green Energy (OSTI)

Incremental reaction path modeling of chemical and sulfur isotopic reactions occurring in active hydrothermal vents on the seafloor, in combination with chemical and petrographic data from sulfide samples from the seafloor and massive sulfide ore deposits, allows a detailed examination of the processes involved. This paper presents theoretical models of reactions of two types: (1) adiabatic mixing between hydrothermal solution and seawater, and (2) reaction of hydrothermal solution with sulfide deposit materials. In addition, reaction of hydrothermal solution with sulfide deposit minerals and basalt in feeder zones is discussed.

Janecky, D.R.

1986-01-01T23:59:59.000Z

142

The value of rolling horizon policies for risk-averse hydro-thermal ...  

E-Print Network (OSTI)

Oct 7, 2010 ... Abstract: We consider the optimal management of a hydro-thermal power system in the mid and long terms. From the optimization point of view,...

143

A Sr-Isotopic Comparison Between Thermal Waters, Rocks, And Hydrotherm...  

Open Energy Info (EERE)

Sr-Isotopic Comparison Between Thermal Waters, Rocks, And Hydrothermal Calcites, Long Valley Caldera, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home...

144

Hydrothermal energy extraction, Auburn, New York: Final report: Volume 2, Chapters 6-10  

DOE Green Energy (OSTI)

This paper discusses a hydrothermal energy extraction system in detail. General topics covered are: Reservoir circulation loop; HVAC buffer loop; and automatic temperature control system. (LSP)

Castor, T.P.

1988-03-01T23:59:59.000Z

145

Phase I - Resource Procurement and Identification | Open Energy Information  

Open Energy Info (EERE)

- Resource Procurement and Identification - Resource Procurement and Identification Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home GEA Development Phase I: Resource Procurement and Identification GEA Development Phases The Geothermal Energy Association's (GEA) Geothermal Reporting Terms and Definitions are a guideline for geothermal developers to use when submitting geothermal resource development information to GEA for public dissemination in its annual US Geothermal Power Production and Development Update. GEA's Geothermal Reporting Terms and Definitions serve to increase the consistency, accuracy, and reliability of industry information presented in the development updates. Phase I - Resource Procurement and Identification Phase II - Resource Exploration and Confirmation Phase III - Permitting and Initial Development

146

Phase II - Resource Exploration and Confirmation | Open Energy Information  

Open Energy Info (EERE)

Phase II - Resource Exploration and Confirmation Phase II - Resource Exploration and Confirmation Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home GEA Development Phase II: Resource Exploration and Confirmation GEA Development Phases The Geothermal Energy Association's (GEA) Geothermal Reporting Terms and Definitions are a guideline for geothermal developers to use when submitting geothermal resource development information to GEA for public dissemination in its annual US Geothermal Power Production and Development Update. GEA's Geothermal Reporting Terms and Definitions serve to increase the consistency, accuracy, and reliability of industry information presented in the development updates. Phase I - Resource Procurement and Identification Phase II - Resource Exploration and Confirmation Phase III - Permitting and Initial Development

147

Phase IV - Resource Production and Power Plant Construction | Open Energy  

Open Energy Info (EERE)

Phase IV - Resource Production and Power Plant Construction Phase IV - Resource Production and Power Plant Construction Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home GEA Development Phase IV: Resource Production and Power Plant Construction GEA Development Phases The Geothermal Energy Association's (GEA) Geothermal Reporting Terms and Definitions are a guideline for geothermal developers to use when submitting geothermal resource development information to GEA for public dissemination in its annual US Geothermal Power Production and Development Update. GEA's Geothermal Reporting Terms and Definitions serve to increase the consistency, accuracy, and reliability of industry information presented in the development updates. Phase I - Resource Procurement and Identification Phase II - Resource Exploration and Confirmation

148

Evaluation of hydrothermal resources of North Dakota. Phase II. Final technical report  

DOE Green Energy (OSTI)

This evaluation of the hydrothermal resources of North Dakota is based on existing data on file with the North Dakota Geological Survey (NDGS) and other state and federal agencies, and field and laboratory studies conducted. The principal sources of data used during the Phase II study were WELLFILE, the computer library of oil and gas well data developed during the Phase I study, and WATERCAT, a computer library system of water well data assembled during the Phase II study. A field survey of the shallow geothermal gradients present in selected groundwater observation holes was conducted. Laboratory determinations of the thermal conductivity of core samples is being done to facilitate heat-flow calculations on those hole-of-convenience cased.

Harris, K.L.; Howell, F.L.; Winczewski, L.M.; Wartman, B.L.; Umphrey, H.R.; Anderson, S.B.

1981-06-01T23:59:59.000Z

149

Evaluation of hydrothermal resources of North Dakota. Phase III final technical report  

DOE Green Energy (OSTI)

The hydrothermal resources of North Dakota were evaluated. This evaluation was based on existing data on file with the North Dakota Geological Survey (NDGS) and other state and federal agencies, and field and laboratory studies conducted. The principal sources of data used during the study were WELLFILE, the computer library of oil and gas well data developed during the Phase I study, and WATERCAT, a computer library system of water well data assembled during the Phase II study. A field survey of the shallow geothermal gradients present in selected groundwater observation holes was conducted. Laboratory determinations of the thermal conductivity of core samples were done to facilitate heat-flow calculations on those holes-of-convenience cased.

Harris, K.L.; Howell, F.L.; Wartman, B.L.; Anderson, S.B.

1982-08-01T23:59:59.000Z

150

A new hydrothermal scenario for the 2006 Lusi eruption, Indonesia. Insights from gas geochemistry  

E-Print Network (OSTI)

acquired a wide set of data of molecular and isotopic composition of gas sampled in several Lusi vents, in the surrounding mud volcanoes, in the closest natural gas field (Wunut), and in the hydrothermal ventsA new hydrothermal scenario for the 2006 Lusi eruption, Indonesia. Insights from gas geochemistry

Mazzini, Adriano

151

Design of novel hybrid controller for automatic generation control of hydrothermal system under open market scenario  

Science Conference Proceedings (OSTI)

This paper presents the analysis of Automatic generation control (AGC) of a two-area hydrothermal system under open market scenario by considering a novel hybrid controller which combines the principles of variable structure controller (VSC) and conventional ... Keywords: AGC, VSC, deregulated system, hybrid controller, hydrothermal system, open market system

C. Srinivasa Rao; S. Siva Nagaraju; P. Sangameswara Raju

2009-12-01T23:59:59.000Z

152

Job 4459300 Ref.No. Prepd. CHP/GEA  

E-Print Network (OSTI)

inspection of boilers exceeding 500 kW: State Energy Inspection District heating sector Min. of Economy

153

Inferences On The Hydrothermal System Beneath The Resurgent Dome In Long  

Open Energy Info (EERE)

Inferences On The Hydrothermal System Beneath The Resurgent Dome In Long Inferences On The Hydrothermal System Beneath The Resurgent Dome In Long Valley Caldera, East-Central California, Usa, From Recent Pumping Tests And Geochemical Sampling Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Inferences On The Hydrothermal System Beneath The Resurgent Dome In Long Valley Caldera, East-Central California, Usa, From Recent Pumping Tests And Geochemical Sampling Details Activities (6) Areas (1) Regions (0) Abstract: Quaternary volcanic unrest has provided heat for episodic hydrothermal circulation in the Long Valley caldera, including the present-day hydrothermal system, which has been active over the past 40 kyr. The most recent period of crustal unrest in this region of east-central California began around 1980 and has included periods of

154

K-Ar Dates Of Hydrothermal Clays From Core Hole Vc-2B, Valles Caldera, New  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » K-Ar Dates Of Hydrothermal Clays From Core Hole Vc-2B, Valles Caldera, New Mexico And Their Relation To Alteration In A Large Hydrothermal System Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: K-Ar Dates Of Hydrothermal Clays From Core Hole Vc-2B, Valles Caldera, New Mexico And Their Relation To Alteration In A Large Hydrothermal System Details Activities (2) Areas (1) Regions (0) Abstract: Seventeen K/Ar dates were obtained on illitic clays within Valles caldera (1.13 Ma) to investigate the impact of hydrothermal alteration on Quaternary to Precambrian intracaldera and pre-caldera rocks in a large,

155

An Oxygen Isotope Study Of Hydrothermal Alteration In The Lake City  

Open Energy Info (EERE)

Isotope Study Of Hydrothermal Alteration In The Lake City Isotope Study Of Hydrothermal Alteration In The Lake City Caldera, San Juan Mountains, Colorado Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: An Oxygen Isotope Study Of Hydrothermal Alteration In The Lake City Caldera, San Juan Mountains, Colorado Details Activities (2) Areas (1) Regions (0) Abstract: A 23-m.y.-old, fossil meteoric-hydrothermal system in the Lake City caldera (11 _ 14 km) has been mapped out by measuring Δ 18O values of 300 rock and mineral samples. Δ 18O varies systematically throughout the caldera, reaching values as low as -2. Great topographic relief, regional tilting, and variable degrees of erosion within the caldera all combine to give us a very complete section through the hydrothermal system, from the

156

Evolution Of Hydrothermal Waters At Mount St Helens, Washington, Usa | Open  

Open Energy Info (EERE)

Evolution Of Hydrothermal Waters At Mount St Helens, Washington, Usa Evolution Of Hydrothermal Waters At Mount St Helens, Washington, Usa Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Evolution Of Hydrothermal Waters At Mount St Helens, Washington, Usa Details Activities (4) Areas (1) Regions (0) Abstract: Hydrothermal water samples at Mount St. Helens collected between 1985 and 1989 and in 1994 are used to identify water types and describe their evolution through time. Two types of low temperature hydrothermal systems are associated with the 1980 eruptions and were initiated soon after emplacement of shallow magma and pyroclastic flows. The Loowit hot spring system is located in the breach zone and is associated with the magma conduit and nearby avalanche deposits, whereas the Pumice Plain (PP)

157

Testing geochemical modeling codes using New Zealand hydrothermal systems  

DOE Green Energy (OSTI)

Hydrothermal systems in the Taupo Volcanic Zone, North Island, New Zealand are being used as field-based modeling exercises for the EQ3/6 geochemical modeling code package. Comparisons of the observed state and evolution of selected portions of the hydrothermal systems with predictions of fluid-solid equilibria made using geochemical modeling codes will: (1) ensure that we are providing adequately for all significant processes occurring in natural systems; (2) determine the adequacy of the mathematical descriptions of the processes; (3) check the adequacy and completeness of thermodynamic data as a function of temperature for solids, aqueous species and gases; and (4) determine the sensitivity of model results to the manner in which the problem is conceptualized by the user and then translated into constraints in the code input. Preliminary predictions of mineral assemblages in equilibrium with fluids sampled from wells in the Wairakei geothermal field suggest that affinity-temperature diagrams must be used in conjunction with EQ6 to minimize the effect of uncertainties in thermodynamic and kinetic data on code predictions. The kinetics of silica precipitation in EQ6 will be tested using field data from silica-lined drain channels carrying hot water away from the Wairakei borefield.

Bruton, C.J.; Glassley, W.E.; Bourcier, W.L.

1993-12-01T23:59:59.000Z

158

Biomolecule-assisted hydrothermal synthesis of silver bismuth sulfide with nanostructures  

SciTech Connect

Silver bismuth sulfide (AgBiS{sub 2}) nanostructures were successfully prepared via a simple biomolecule-assisted hydrothermal synthesis at 200 Degree-Sign C for 12-72 h. Silver nitrate, bismuth nitrate and L-cysteine were used as starting materials. Here, the biomolecule, L-cysteine, was served as the sulfide source and a complexing agent. The products, characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM), were cubic AgBiS{sub 2} nanoparticles with a diameter range of about 20-75 nm. It was found that their crystallinity and particle size increased with increasing reaction time. The energy dispersive X-ray spectroscopy (EDX) and inductively coupled plasma optical emission spectrophotometry (ICP-OES) analyses were used to confirm the stoichiometry of AgBiS{sub 2}. The optical band gap of the AgBiS{sub 2} nanoparticles, calculated from UV-vis spectra, was 3.0 eV which indicated a strong blue shift because of the quantum confinement effect. A possible formation mechanism of the AgBiS{sub 2} nanoparticles was also discussed. - Graphical abstract: The optical band gap of the as-prepared AgBiS{sub 2} nanoparticles displays a strong blue shift comparing to the 2.46 eV of bulk AgBiS{sub 2} caused by the quantum confinement effects. Highlights: Black-Right-Pointing-Pointer A simple biomolecule-assisted hydrothermal method is developed to prepare AgBiS{sub 2}. Black-Right-Pointing-Pointer L-Cysteine is served as the sulfide source and a complexing agent. Black-Right-Pointing-Pointer Increase in band gap of the AgBiS{sub 2} nanoparticles attributes to the quantum confinement effects.

Kaowphong, Sulawan, E-mail: sulawank@gmail.com [Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200 (Thailand); Materials Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai 50200 (Thailand)

2012-05-15T23:59:59.000Z

159

Microwave-assisted hydrothermal synthesis of porous SnO{sub 2} nanotubes and their lithium ion storage properties  

SciTech Connect

Porous SnO{sub 2} nanotubes have been synthesized by a rapid microwave-assisted hydrothermal process followed by annealing in air. The detailed morphological and structural studies indicate that the SnO{sub 2} tubes typically have diameters from 200 to 400 nm, lengths from 0.5 to 1.5 {mu}m and wall thicknesses from 50 to 100 nm. The SnO{sub 2} nanotubes are self-assembled by interconnected nanocrystals with sizes {approx}8 nm resulting in a specific surface area of {approx}54 m{sup 2} g{sup -1}. The pristine SnO{sub 2} nanotubes are used to fabricate lithium half cells to evaluate their lithium ion storage properties. The porous SnO{sub 2} nanotubes are characteristic with high lithium ion storage capacity, that is found to be 1258, 951, 757, 603, 458, and 288 mAh g{sup -1}, at 0.1, 0.2, 0.5, 1, 2, and 4C, respectively. The enhanced electrochemical properties of the SnO{sub 2} nanotubes can be ascribed to their unique geometry and porous structures. - Graphical abstract: Porous SnO{sub 2} nanotubes are synthesized by a fast microwave-assisted hydrothermal process and exhibit high lithium ion storage properties due to their unique geometry and porous characteristics. Highlights: Black-Right-Pointing-Pointer A microwave-assisted hydrothermal method was used to prepare porous SnO{sub 2} nanotubes. Black-Right-Pointing-Pointer The porous SnO{sub 2} nanotubes have abundant mesopores on their tube walls. Black-Right-Pointing-Pointer The porous SnO{sub 2} nanotubes possess high lithium ion storage properties. Black-Right-Pointing-Pointer Our results may promote the development of high-performance anode materials.

Wang, H.E., E-mail: hongen.wang@gmail.com [Department of Physics and Materials Science, City University of Hong Kong (Hong Kong); Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong (Hong Kong); Xi, L.J.; Ma, R.G. [Department of Physics and Materials Science, City University of Hong Kong (Hong Kong); Lu, Z.G. [School of Chemistry and Chemical Engineering, Central South University, Changsha 410083 (China); Chung, C.Y. [Department of Physics and Materials Science, City University of Hong Kong (Hong Kong); Bello, I. [Department of Physics and Materials Science, City University of Hong Kong (Hong Kong); Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong (Hong Kong); Zapien, J.A., E-mail: apjazs@cityu.edu.hk [Department of Physics and Materials Science, City University of Hong Kong (Hong Kong); Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong (Hong Kong)

2012-06-15T23:59:59.000Z

160

Comparative assessment of five potential sites for hydrothermal magma systems: geochemistry  

DOE Green Energy (OSTI)

A brief discussion is given of the geochemical objectives and questions that must be addressed in such an evaluation. A summary of the currently published literature that is pertinent in answering these questions is presented for each of the five areas: The Geysers-Clear Lake region, Long Valley, Rio Grand Rift, Roosevelt Hot Springs, and the Salton Trough. The major geochemical processes associated with proposed hydrothermal sites are categorized into three groups for presentation: geochemistry of magma and associated volcanic rocks, geochemistry of hydrothermal solutions, and geochemistry of hydrothermal alteration. (MHR)

White, A.F.

1980-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Integration of hydrothermal energy economics related quantitative studies  

DOE Green Energy (OSTI)

An evaluation of the existing hydrothermal energy economics related quantitative studies is provided. The objective is to present the similarities and differences in methodology and assumptions, and explain the impact of these differences on the energy price estimates. A brief summary of the study categories, economic evaluation methodology, technical and economic assumptions and major outputs of the studies is presented. The relative importance and the likely effects of the most important technical and economic factors on the cost of energy are discussed. The sensitivity analysis results provided are useful in judging the credibility as well as the relative weaknesses and strengths of the various cost of energy estimation studies. The major conclusions of the evaluation and the recommendations for future research are presented.

Not Available

1982-10-01T23:59:59.000Z

162

Site-specific analysis of geothermal development-data files of prospective sites. Vol. III  

DOE Green Energy (OSTI)

Development scenarios for 37 hydrothermal and geopressured prospects in the United States were analyzed. This third of three volumes presents site-specific data and sample development schedules for the first plant on line at each of the 37 prospects.

Williams, F.; Cohen, A.; Pfundstein, R.; Pond, S.

1978-02-01T23:59:59.000Z

163

New Evidence On The Hydrothermal System In Long Valley Caldera, California,  

Open Energy Info (EERE)

New Evidence On The Hydrothermal System In Long Valley Caldera, California, New Evidence On The Hydrothermal System In Long Valley Caldera, California, From Wells, Fluid Sampling, Electrical Geophysics, And Age Determinations Of Hot-Spring Deposits Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: New Evidence On The Hydrothermal System In Long Valley Caldera, California, From Wells, Fluid Sampling, Electrical Geophysics, And Age Determinations Of Hot-Spring Deposits Abstract Data collected since 1985 from test drilling, fluid sampling, and geologic and geophysical investigations provide a clearer definition of the hydrothermal system in Long Valley caldera than was previously available. This information confirms the existence of high-temperature (> 200°C) reservoirs within the volcanic fill in parts of the west moat. These

164

Hydrothermal Circulation At Mount St Helens Determined By Self-Potential  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Hydrothermal Circulation At Mount St Helens Determined By Self-Potential Measurements Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Hydrothermal Circulation At Mount St Helens Determined By Self-Potential Measurements Details Activities (1) Areas (1) Regions (0) Abstract: The distribution of hydrothermal circulation within active volcanoes is of importance in identifying regions of hydrothermal alteration which may in turn control explosivity, slope stability and sector collapse. Self-potential measurements, indicative of fluid circulation, were made within the crater of Mount St. Helens in 2000 and

165

Hydrothermal synthesis of Sb2S3nanorods using iodine via redox mechanism  

Science Conference Proceedings (OSTI)

Crystalline antimony sulfide (Sb2S3) with nanorods morphology was successfully prepared via hydrothermal method by the reaction of elemental sulfur, antimony, and iodine as starting materials with high yield at 180C for 24 ...

Abdolali Alemi; Sang Woo Joo; Younes Hanifehpour; Aliakbar Khandar; Ali Morsali; Bong-Ki Min

2011-01-01T23:59:59.000Z

166

A Handheld Sampler for Collecting Organic Samples from Shallow Hydrothermal Vents  

Science Conference Proceedings (OSTI)

We describe here a new handheld sampler, specially designed to be deployed by SCUBA divers, to collect fluid samples from shallow hydrothermal vents. The new sampler utilizes a syringe-like titanium sampling bottle with regulated filling rate to ...

Shi-Jun Wu; Can-Jun Yang; Chen-Tung Arthur Chen

167

Mapping of hydrothermally altered rocks by the EO-1 Hyperion sensor, Northern Danakil Depression, Eritrea  

Science Conference Proceedings (OSTI)

An EO-1 Hyperion scene was used to identify and map hydrothermally altered rocks and a Precambrian metamorphic sequence at and around the Alid volcanic dome, at the northern Danakil Depression, Eritrea. Mapping was coupled with laboratory analyses, including ...

Ronen Gersman; Eyal Ben-Dor; Michael Beyth; Dov Avigad; Michael Abraha; Alem Kibreab

2008-07-01T23:59:59.000Z

168

A Handheld Sampler for Collecting Organic Samples from Shallow Hydrothermal Vents  

Science Conference Proceedings (OSTI)

This study describes a new handheld sampler, specially designed to be deployed by scuba divers, to collect fluid samples from shallow hydrothermal vents. The new sampler utilizes a syringe-like titanium sampling bottle with a regulated filling ...

Shi-Jun Wu; Can-Jun Yang; Chen-Tung Arthur Chen

2013-08-01T23:59:59.000Z

169

Laboratory and field-based investigations of subsurface geochemical processes in seafloor hydrothermal systems  

E-Print Network (OSTI)

This thesis presents the results of four discrete investigations into processes governing the organic and inorganic chemical composition of seafloor hydrothermal fluids in a variety of geologic settings. Though Chapters 2 ...

Reeves, Eoghan

2010-01-01T23:59:59.000Z

170

Seismic Evidence For A Hydrothermal Layer Above The Solid Roof Of The Axial  

Open Energy Info (EERE)

Evidence For A Hydrothermal Layer Above The Solid Roof Of The Axial Evidence For A Hydrothermal Layer Above The Solid Roof Of The Axial Magma Chamber At The Southern East Pacific Rise Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Seismic Evidence For A Hydrothermal Layer Above The Solid Roof Of The Axial Magma Chamber At The Southern East Pacific Rise Details Activities (1) Areas (1) Regions (0) Abstract: A full-waveform inversion of two-ship, wide-aperture, seismic reflection data from a ridge-crest seismic line at the southern East Pacific Rise indicates that the axial magma chamber here is about 50 m thick, is embedded within a solid roof, and has a solid floor. The 50-60-m-thick roof is overlain by a 150-200-m-thick low-velocity zone that may correspond to a fracture zone that hosts the hydrothermal circulation,

171

Surface-discharging hydrothermal systems at Yucca Mountain: Examining the evidence  

DOE Green Energy (OSTI)

This paper discusses exposures of altered rock that have been thought to form by recent discharge of water from depth. They were examined to address a concern that hydrothermal processes could compromise the isolation capability of a potential high-level nuclear waste repository at Yucca Mountain. Suspected hot-spring and hydrothermal-vent deposits are more likely the products of infiltration of meteoric water into newly deposited and still-hot pyroclastic flows >12 Myr ago.

Levy, S.S.

1992-12-01T23:59:59.000Z

172

Rare Earth Oxide Fluoride Nanoparticles And Hydrothermal Method For Forming Nanoparticles  

DOE Patents (OSTI)

A hydrothermal method for forming nanoparticles of a rare earth element, oxygen and fluorine has been discovered. Nanoparticles comprising a rare earth element, oxygen and fluorine are also described. These nanoparticles can exhibit excellent refractory properties as well as remarkable stability in hydrothermal conditions. The nanoparticles can exhibit excellent properties for numerous applications including fiber reinforcement of ceramic composites, catalyst supports, and corrosion resistant coatings for high-temperature aqueous solutions.

Fulton, John L. (Richland, WA); Hoffmann, Markus M. (Richland, WA)

2003-12-23T23:59:59.000Z

173

Preservation of iron(II) by carbon-rich matrices in a hydrothermal plume  

SciTech Connect

Hydrothermal venting associated with mid-ocean ridge volcanism is globally widespread. This venting is responsible for a dissolved iron flux to the ocean that is approximately equal to that associated with continental riverine runoff. For hydrothermal fluxes, it has long been assumed that most of the iron entering the oceans is precipitated in inorganic forms. However, the possibility of globally significant fluxes of iron escaping these mass precipitation events and entering open-ocean cycles is now being debated, and two recent studies suggest that dissolved organic ligands might influence the fate of hydrothermally vented metals. Here we present spectromicroscopic measurements of iron and carbon in hydrothermal plume particles at the East Pacific Rise mid-ocean ridge. We show that organic carbon-rich matrices, containing evenly dispersed iron(II)-rich materials, are pervasive in hydrothermal plume particles. The absence of discrete iron(II) particles suggests that the carbon and iron associate through sorption or complexation. We suggest that these carbon matrices stabilize iron(II) released from hydrothermal vents in the region, preventing its oxidation and/or precipitation as insoluble minerals. Our findings have implications for deep-sea biogeochemical cycling of iron, a widely recognized limiting nutrient in the oceans.

Toner, Brandy M.; Fakra, Sirine C.; Manganini, Steven J.; Santelli, Cara M.; Marcus, Matthew A.; Moffett, James W.; Rouxel, Olivier; German, Christopher R.; Edwards, Katrina J.

2008-09-20T23:59:59.000Z

174

Possible Origin of Improved High Temperature Performance of Hydrothermally Aged Cu/Beta Zeolite Catalysts  

SciTech Connect

The hydrothermal stability of Cu/beta NH3 SCR catalysts are explored here. In particular, this paper focuses on the interesting ability of this catalyst to maintain and even enhance high-temperature performance for the "standard" SCR reaction after modest (900 C, 2 hours) hydrothermal aging. Characterization of the fresh and aged catalysts was performed with an aim to identify possible catalytic phases responsible for the enhanced high temperature performance. XRD, TEM and 27Al NMR all showed that the hydrothermally aging conditions used here resulted in almost complete loss of the beta zeolite structure between 1 and 2 hours aging. While the 27Al NMR spectra of 2 and 10 hour hydrothermally-aged catalysts showed significant loss of a peak associated with tetrahedrally-coordinated Al species, no new spectral features were evident. Two model catalysts, suggested by these characterization data as possible mimics of the catalytic phase formed during hydrothermal aging of Cu/beta, were prepared and tested for their performance in the "standard" SCR and NH3 oxidation reactions. The similarity in their reactivity compared to the 2 hour hydrothermally-aged Cu/beta catalyst suggests possible routes for preparing multi-component catalysts that may have wider temperature windows for optimum performance than those provided by current Cu/zeolite catalysts.

Peden, Charles HF; Kwak, Ja Hun; Burton, Sarah D.; Tonkyn, Russell G.; Kim, Do Heui; Lee, Jong H.; Jen, H. W.; Cavattaio, Giovanni; Cheng, Yisun; Lambert, Christine

2012-04-30T23:59:59.000Z

175

Stochastic Lagrangian relaxation applied to power scheduling in a hydro-thermal system under uncertainty  

E-Print Network (OSTI)

A dynamic (multi-stage) stochastic programming model for the weekly cost-optimal generation of electric power in a hydro-thermal generation system under uncertain load is developed. The model involves a large number of mixed-integer (stochastic) decision variables and constraints linking time periods and operating power units. Astochastic Lagrangian relaxation scheme is designed by assigning (stochastic) multipliers to all constraints coupling power units. It is assumed that the stochastic load process is given (or approximated) by a nite number of realizations (scenarios) in scenario tree form. Solving the dual by a bundle subgradient method leads to a successive decomposition into stochastic single (thermal or hydro) unit subproblems. The stochastic thermal and hydro subproblems are solved by astochastic dynamic programming technique and by a speci c descent algorithm, respectively. A Lagrangian heuristics that provides approximate solutions for the rst stage (primal) decisions starting from the optimal (stochastic) multipliers is developed. Numerical results are presented for realistic data from a German power utility andfornumbers of scenarios ranging from 5 to 100 and a time horizon from 7 to 9 days. The sizes of the corresponding optimization problems go up to 200.000 binary and 350.000 continuous variables, and more than 500.000 constraints.

M. P. Nowak; W. Rmisch

2000-01-01T23:59:59.000Z

176

In Situ Hydrothermal Synthesis of LiFePO4 Studied by Synchrotron  

SciTech Connect

The development of high capacity, safe lithium battery materials requires new tools to better understand how reaction conditions affect nucleation and crystallization, particle size, morphology, and defects. We present a general approach for studying the synthesis of Li battery electrode materials in real time. The formation of LiFePO{sub 4} was investigated by time-resolved in situ synchrotron X-ray diffraction under hydrothermal conditions, and the reaction kinetics were determined by changes of the Bragg reflections. We provide the first evidence in support of a dissolution-reprecipitation process for the formation of LiFePO{sub 4}, which occurs at temperatures as low as 105 C and appears to be a three-dimensional diffusion-controlled process. Lattice parameters and their evolution were monitored in situ, as well as the formation of antisite defects and their subsequent elimination under various synthesis conditions. The ability to characterize and tailor synthesis reactions in situ is essential for rapid optimization of the synthesis procedures and, ultimately, the development of new battery electrodes.

J Chen; J Bai; H Chen; J Graetz

2011-12-31T23:59:59.000Z

177

Are there significant hydrothermal resources in the US part of the Cascade Range?  

SciTech Connect

The Cascade Range is a geothermal dichotomy. On the one hand, it is an active volcanic arc above a subducting plate and is demonstrably an area of high heat flow. On the other hand, the distribution of hydrothermal manifestations compared to other volcanic arcs is sparse, and the hydrothermal outflow calculated from stream chemistry is low. Several large estimates of undiscovered geothermal resources in the U.S. part of the Cascade Range prepared in the 1970s and early 1980s were based fundamentally on two models of the upper crust. One model assumed that large, partly molten, intrusive bodies exist in the upper 10 km beneath major volcanic centers and serve as the thermal engines driving overlying hydrothermal systems. The other model interpreted the coincident heat-flow and gravity gradients west of the Cascade crest in central Oregon to indicate a partly molten heat source at 10 {+-} 2 km depth extending {approx}30 km west from the axis of the range. Investigations of the past ten years have called both models into question. Large long-lived high-temperature hydrothermal systems at depths <3 km in the U.S. part of the Cascade Range appear to be restricted to silicic domefields at the Lassen volcanic center, Medicine Lake volcano, Newberry volcano, and possibly the Three Sisters. Federal land-use restrictions further reduce this list to Medicine Lake and Newberry. Dominantly andesitic stratocones appear to support only small transitory hydrothermal systems related to small intrusive bodies along the volcanic conduits. The only young caldera, at Crater Lake, supports only low- to intermediate-temperature hydrothermal systems. Most of the Cascade Range comprises basaltic andesites and has little likelihood for high-level silicic intrusions and virtually no potential for resultant large high-temperature hydrothermal systems. Undiscovered hydrothermal resources of the Cascade Range of the United States are substantially lower than previous estimates. The range does have potential for intermediate-temperature hot dry rock and localized low- to intermediate-temperature hydrothermal systems.

Muffler, L.J. Patrick; Guffanti, Marianne

1995-01-26T23:59:59.000Z

178

Daily combined economic emission scheduling of hydrothermal systems with cascaded reservoirs using self organizing hierarchical particle swarm optimization technique  

Science Conference Proceedings (OSTI)

Daily optimum economic emission scheduling of hydrothermal systems is an important task in the operation of power systems. Many heuristic techniques such as differential evolution, and particle swarm optimization have been applied to solve this problem ... Keywords: Cascaded reservoirs, Combined economic emission scheduling (CEES), Hydrothermal systems, Self-organizing particle swarm optimization with time-varying acceleration coefficients (SOHPSO_TVAC)

K. K. Mandal; N. Chakraborty

2012-02-01T23:59:59.000Z

179

Low temperature hydrothermally synthesized nanocrystalline orthorhombic LiMnO2 cathode material for lithium-ion cells  

Science Conference Proceedings (OSTI)

Nanocrystalline orthorhombic LiMnO2 particles with an average particle size of about 35 nm in diameter were successfully synthesized by a hydrothermal process at 160-180 C from trimanganese tetroxide (Mn3O4) prepared ... Keywords: hydrothermal process, lithium ion battery, nanocrystalline, orthorhombic LiMnO2, solvothermal process

Mengqiang Wu; Ai Chen; Rongqing Xu; Yue Li

2003-05-01T23:59:59.000Z

180

Nitrogen geochemistry as a tracer of fluid flow in a hydrothermal vent complex in the Karoo Basin, South Africa  

E-Print Network (OSTI)

Nitrogen geochemistry as a tracer of fluid flow in a hydrothermal vent complex in the Karoo Basin and hydrothermal vent complexes (HVC) in the Karoo Basin in South Africa. The HVC formed during phreatic eruptions from the lower stratigraphic units of the Karoo Basin shows that the vitrinite reflectance and d15 N

Svensen, Henrik

Note: This page contains sample records for the topic "hydrothermal gea development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Abstract--A stochastic dynamic programming hydrothermal dispatch model to simulate a bid-based market is  

E-Print Network (OSTI)

on dynamic programming that optimizes and validates the bid prices strategies for each power plant in a hydro-thermal, and simulating them as if they were a single power plant. In a hydro-thermal system as the one simulated several plants. Emphasis is given to hydro reservoir modeling and to the assessment of their market power

Catholic University of Chile (Universidad Católica de Chile)

182

A Sr-Isotopic Comparison Between Thermal Waters, Rocks, And Hydrothermal  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » A Sr-Isotopic Comparison Between Thermal Waters, Rocks, And Hydrothermal Calcites, Long Valley Caldera, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Sr-Isotopic Comparison Between Thermal Waters, Rocks, And Hydrothermal Calcites, Long Valley Caldera, California Details Activities (3) Areas (1) Regions (0) Abstract: The 87Sr/86Sr values of thermal waters and hydrothermal calcites of the Long Valley caldera geothermal system are more radiogenic than those of young intracaldera volcanic rocks. Five thermal waters display 87Sr/86Sr

183

Sources Of Chloride In Hydrothermal Fluids From The Valles Caldera, New  

Open Energy Info (EERE)

Sources Of Chloride In Hydrothermal Fluids From The Valles Caldera, New Sources Of Chloride In Hydrothermal Fluids From The Valles Caldera, New Mexico- A 36Cl Study Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Sources Of Chloride In Hydrothermal Fluids From The Valles Caldera, New Mexico- A 36Cl Study Abstract The Valles caldera in New Mexico hosts a high-temperature geothermal system, which is manifested in a number of hot springs discharging in and around the caldera. In order to determine the fluid pathways and the origin of chloride in this system, we measured 36Cl/Cl ratios in waters from high-temperature drill holes and from surface springs in this region. The waters fall into two general categories: recent meteoric water samples with low Cl- concentrations (< 10 mg/L) and relatively high 36Cl/Cl ratios

184

The potential for photosynthesis in hydrothermal vents: a new avenue for life in the Universe?  

E-Print Network (OSTI)

We perform a quantitative assessment for the potential for photosynthesis in hydrothermal vents in the deep ocean. The photosynthetically active radiation in this case is from geothermal origin: the infrared thermal radiation emitted by hot water, at temperatures ranging from 473 up to 673 K. We find that at these temperatures the photosynthetic potential is rather low in these ecosystems for most known species. However, species which a very high efficiency in the use of light and which could use infrared photons till 1300nm, could achieve good rates of photosynthesis in hydrothermal vents. These organisms might also thrive in deep hydrothermal vents in other planetary bodies, such as one of the more astrobiologically promising Jupiter satellites: Europa.

Perez, Noel; Martin, Osmel; Leiva-Mora, Michel

2013-01-01T23:59:59.000Z

185

Lithology and hydrothermal alteration determination from well logs for the Cerro Prieto Wells, Mexico  

DOE Green Energy (OSTI)

The purpose of this study is to examine the characteristics of geophysical well logs against the sand-shale series of the sedimentary column of the Cerro Prieto Geothermal Field, Mexico. The study shows that the changes in mineralogy of the rocks because of hydrothermal alteration are not easily detectable on the existing logs. However, if the behavior of clay minerals alone is monitored, the onset of the hydrothermally altered zones may be estimated from the well logs. The effective concentration of clay-exchange cations, Q/sub v/, is computed using the data available from conventional well logs. Zones indicating the disappearance of low-temperature clays are considered hydrothermally altered formations with moderate to high-permeability and temperature, and suitable for completion purposes.

Ershaghi, I.; Ghaemian, S.; Abdassah, D.

1981-10-01T23:59:59.000Z

186

Evaluation of hydrothermal resources of North Dakota. Phase I, Final technical report  

SciTech Connect

This evaluation is based on an analysis of existing data on file with the North Dakota Geological Survey (NDGS) and other state and federal agencies. The principle source of data used was the oil and gas well files maintained by the NDGS. A computer library was created containing all the necessary oil and gas well data in the North Dakota Geological Survey oil and gas well files. Stratigraphic data, bottomhole-temperature data, and chemical data are presented in map form to show the geothermal gradient, temperature, and depth of potential hydrothermal aquifers and the chemical characteristics of potential hydrothermal aquifers.

Harris, K.L.; Winczewski, L.M.; Umphrey, H.R.; Anderson, S.B.

1980-04-01T23:59:59.000Z

187

Hydrothermal alteration at the Roosevelt Hot Springs Thermal Area, Utah. Final report  

DOE Green Energy (OSTI)

Hot spring deposits in the Roosevelt thermal area consist of opaline sinter, and siliceous-sinter-cemented alluvium. Alluvium, granite to granodiorite plutonic rocks, and amphibolite facies gneiss have been altered by acid-sulfate water to alunite and opal at the surface, and to kaolinite, alunite, montmorillonite, and muscovite to a depth of 60 m. Marcasite and pyrite occur below the water table at about 30m. Deeper alteration sampled to a depth of 2.26 km consists of muscovite, chlorite, calcite, K-feldspar, albite, and epidote with pyrite and sparse chalcopyrite. Thermal water is dilute (ionic strength 0.1 to 0.2) sodium chloride brine. Surface water contains 10 times as much calcium and 100 times as much magnesium as the deep water. Sulfate varies from 48 to 200 mg/l. Present-day spring temperature is 25/sup 0/C but in 1950 the spring temperature was 85/sup 0/C. Computed Na-K-Ca temperature is 241/sup 0/C for the present-day spring, 274/sup 0/C for a well and 283/sup 0/C for the 1957 spring. Quartz saturation temperatures are 170/sup 0/C for the present-day spring, 283/sup 0/C for the well, and 213/sup 0/C for the 1957 spring. A plausible model for development of the near-surface alteration consists of hydrothermal fluid which convectively rises along major fractures. Water cools by conduction and steam separation, and hydrogen ion is produced by oxidation of hydrogen sulfide. The low pH water percolates from the surface downward and reacts with rocks to produce alunite, kaolinite, montmorillonite, and muscovite as hydrogen is consumed.

Parry, W.T.; Bryant, N.L.; Dedolph, R.E.; Ballantyne, J.M.; Ballantyne, G.H.; Rohrs, D.T.; Mason, J.L.

1978-11-01T23:59:59.000Z

188

Hydrothermal method of synthesis of rare-earth tantalates and niobates  

SciTech Connect

A hydrothermal method of synthesis of a family of rare-earth Group 5 oxides, where the Group 5 oxide is a niobate or tantalate. The rare-earth Group 5 oxides can be doped with suitable emitter ions to form nanophosphors.

Nyman, May D; Rohwer, Lauren E.S.; Martin, James E

2012-10-16T23:59:59.000Z

189

Preservation of Fe(II) by Carbon-Rich Matrices in Hydrothermal Plumes  

NLE Websites -- All DOE Office Websites (Extended Search)

Preservation of Fe(II) by Carbon-Rich Matrices in Hydrothermal Plumes Print Preservation of Fe(II) by Carbon-Rich Matrices in Hydrothermal Plumes Print Despite the considerable amount of iron that enters the oceans from the continents and from hydrothermal vents at mid-ocean ridges on the seafloor, there are large regions of the global ocean where iron availability is so low that it limits life. Oceanographers have long explained this anomaly by assuming that the iron in the sea is primarily incorporated as Fe(III) into inorganic minerals that lack both the mobility to circulate over long distance and bioavailability to sea life as an essential nutrient. Now, a collaboration led by researchers from the Woods Hole Oceanographic Institution has reported that the hydrothermal plumes emerging from the vents actually contain iron in both Fe(II) and Fe(III) oxidation states associated with organic material from nearby flora and fauna. The collaboration suggests that the organic matrices prevent oxidation and precipitation of the Fe(II), perhaps increasing both its circulation through the world's oceans and its bioavailability as a deep-sea nutrient.

190

Preservation of Fe(II) by Carbon-Rich Matrices in Hydrothermal Plumes  

NLE Websites -- All DOE Office Websites (Extended Search)

Preservation of Fe(II) by Carbon-Rich Matrices in Hydrothermal Plumes Print Preservation of Fe(II) by Carbon-Rich Matrices in Hydrothermal Plumes Print Despite the considerable amount of iron that enters the oceans from the continents and from hydrothermal vents at mid-ocean ridges on the seafloor, there are large regions of the global ocean where iron availability is so low that it limits life. Oceanographers have long explained this anomaly by assuming that the iron in the sea is primarily incorporated as Fe(III) into inorganic minerals that lack both the mobility to circulate over long distance and bioavailability to sea life as an essential nutrient. Now, a collaboration led by researchers from the Woods Hole Oceanographic Institution has reported that the hydrothermal plumes emerging from the vents actually contain iron in both Fe(II) and Fe(III) oxidation states associated with organic material from nearby flora and fauna. The collaboration suggests that the organic matrices prevent oxidation and precipitation of the Fe(II), perhaps increasing both its circulation through the world's oceans and its bioavailability as a deep-sea nutrient.

191

Understanding the Formation and Evolution of Ceria Nanoparticles Under Hydrothermal Conditions  

Science Conference Proceedings (OSTI)

The formation and evolution of ceria nanoparticles during hydrothermal synthesis was investigated by in-situ total scattering and powder diffraction. The nucleation of pristine crystalline ceria nanoparticles originated from previously unknown cerium dimer complexes. The nanoparticle growth was highly accelerated under supercritical conditions.

Tyrsted, Christoffer; rnsbjerg; #8197; Jensen, Kirsten Marie; Bjesen, Espen Drath; Lock, Nina; Christensen, Mogens; Billinge, Simon J.L.; Brummerstedt; #8197; Iversen, Bo (Aarhus); (Columbia)

2012-10-23T23:59:59.000Z

192

HYDROTHERMAL TREATMENT OF WHEAT STRAW ON PILOT PLANT SCALE Anders Thygesena  

E-Print Network (OSTI)

solid material is one of the most important factors for production of bioethanol. Conversion for production of sugars for bio ethanol and an alkali free solid material for combustion in an incineration). After combined hydrothermal treatment and enzymatic hydrolysis the maximum sugar, yields were 30 g

193

Duration of hydrothermal activity at Steamboat Springs, Nevada, from ages of spatially associated volcanic rocks  

DOE Green Energy (OSTI)

Steamboat Springs is a presently active equivalent of epithermal gold-silver ore-forming systems. Hot-spring sinter deposits contain small amounts of gold, silver, mercury, antimony, and arsenic. Hot-spring activity probably started before extrusion of the basaltic andesite of Steamboat Springs. Old sinter from the Steamboat Springs system occurs in gravels above and below the basaltic andesite. Intense hydrothermal alteration, including almost complete replacement by hydrothermal potassium-feldspar, has affected the basaltic andesite. Three plagioclase separates of differing potassium content from fresh basaltic andesite yielded potassium-argon ages of 2.52 to 2.55 m.y. Basaltic andesite almost completely replaced by potassium-feldspar yielded an age of 1.1 m.y. The source of energy for the thermal convection system is probably a large rhyolitic magma chamber that supplied the pumice and from which the rhyolite domes were emplaced. Sanidine and obsidian from four of the rhyolite domes yielded potassium-argon ages of 1.15 to 1.52 m.y. and obsidian from one of the northeastern domes yielded apparent ages of 2.97 and 3.03 m.y. The data indicate that hydrothermal activity has occurred at Steamboat Springs, possibly intermittently, for more than 2-1/2 m.y. These data agree with other radiogenic age studies indicating 1- and 2-m.y. lifetimes for the hydrothermal systems that generate epithermal gold-silver deposits.

Silberman, M.L.; White, D.E.; Keith, T.E.C.; Dockter, R.D.

1979-01-01T23:59:59.000Z

194

San Francisco Volcanic Field Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Plants (0) Projects (0) Activities (6) NEPA(0) Geothermal Area Profile Location Arizona Exploration Region Other GEA Development Phase 2008 USGS Resource Estimate Mean Reservoir...

195

Rangely Oilfield Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Plants (0) Projects (0) Activities (1) NEPA(0) Geothermal Area Profile Location Colorado Exploration Region Other GEA Development Phase 2008 USGS Resource Estimate Mean Reservoir...

196

Railroad Valley Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Power Plants (0) Projects (0) Activities (1) NEPA(0) Geothermal Area Profile Location Nevada Exploration Region Northern Basin and Range Geothermal Region GEA Development Phase...

197

Browse wiki | Open Energy Information  

Open Energy Info (EERE)

Association (GEA) developed a reporting system, known as the Geothermal Reporting Terms and Definitions, in 2010. The Geothermal Reporting Terms and Definitions serve as a...

198

Hydrothermal alteration in Oregon's Newberry Volcano No. 2: fluid chemistry and secondary-mineral distribution  

SciTech Connect

Newberry 2 was drilled in the caldera floor of Newberry Volcano, Oregon, by the US Geological Survey during 1979-81. The maximum temperature measured was 265C at the bottom of the hole, 932 m below the surface. Rocks recovered fr9om the drill hole are divided into three intervals on the basis of hydrothermal alteration and mineral deposition: (1) 0-290 m consists of unaltered, largely glassy volcanic material, with present temperatures ranging from 20 to 40C; (2) 290-700 m consists of permeable tuff layers, tuff breccia units, and brecciated and fractured rhyodacitic to dacitic lava flows, with temperatures ranging from 40 to 100C; (3) 700-932 m consists of impermeable andesitic to basaltic lava flows that generally show little effect of alteration, interlayered with permeable hydrothermally altered flow breccia, with temperatures gradually increasing from 100 at 700 m to 265C at 932 m. Hydrothermal alteration throughout the system is controlled by rock permeability, temperature, composition of geothermal fluids, and composition and crystallinity of host rocks. Rock alteration consists mainly of replacement of glass by clay minerals and, locally, zeolites, partial replacement of plagioclase phenocrysts by calcite +/- epidote +/- illite, and whole-rock leaching adjacent to fluids channels. Open-space deposition of hydrothermal minerals in fractures, vesicles, and interbreccia pore space is far more abundant than replacement. A cooling shallow convection system in the upper 700 m is indicated by the occurrence of hydrothermal minerals that were deposited in a slightly higher temperature environment than presently exists. Below 700 m, the heat flow is conductive, and fluid flow is controlled by horizontal lava flows. Homogenization temperatures of secondary quartz fluid inclusions were as high as 370C.

Keith, T.E.C.; Mariner, R.H.; Bargar, K.E.; Evans, W.C.; Presser, T.S.

1984-04-01T23:59:59.000Z

199

Tracking Hemicellulose and Lignin Deconstruction During Hydrothermal Pretreatment of Biomass  

E-Print Network (OSTI)

years: A comparison of carbon dioxide fluxes associated with8.2. Development of carbon dioxide emissions from ethanol8.3. Development of carbon dioxide emissions from gasoline

McKenzie, Heather Lorelei

2012-01-01T23:59:59.000Z

200

Experimental and theoretical investigation of the production of HCl and some metal chlorides in magmatic/hydrothermal systems. Progress report  

DOE Green Energy (OSTI)

Hydrothermal experiments on the partitioning of HCl and copper chloride in the system silicate melt-hydrosaline liquid-aqueous vapor are described. Modelling of the aqueous phase evolution process is discussed. (MHR)

Not Available

1990-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Geochemical tracers of processes affecting the formation of seafloor hydrothermal fluids and deposits in the Manus back-arc basin  

E-Print Network (OSTI)

Systematic differences in trace element compositions (rare earth element (REE), heavy metal, metalloid concentrations) of seafloor vent fluids and related deposits from hydrothermal systems in the Manus back-arc basin ...

Craddock, Paul R

2009-01-01T23:59:59.000Z

202

Biotic and abiotic interactions of deep-sea hydrothermal vent-endemic fish on the East Pacific Rise  

E-Print Network (OSTI)

A study of the ecology of fish endemic to hydrothermal vents on the East Pacific Rise was undertaken utilizing a variety of techniques, focusing on the bythitid Thermichthys hollisi. Stable isotope and gut content analyses ...

Buckman, Kate Lynn

2009-01-01T23:59:59.000Z

203

Prospecting for Hydrothermal Vents Using Moored Current and Temperature Data: Axial Volcano on the Juan de Fuca Ridge, Northeast Pacific  

Science Conference Proceedings (OSTI)

Tidal and inertial currents and profuse hydrothermal discharge at recently erupted Axial Volcano, Juan de Fuca Ridge, cause relatively large and rapid temperature (T) changes in the near-bottom water column. Measurements show short-term T ...

J. W. Lavelle; M. A. Wetzler; E. T. Baker; R. W. Embley

2001-03-01T23:59:59.000Z

204

Supercapacitive Properties of Hydrothermally Synthesized Co3O4 ...  

Science Conference Proceedings (OSTI)

Design of Light Weight Structure for Wind Turbine Tower by Using Nano- Materials Development of Highly Active Titania-Based Nanoparticles for Composite...

205

Surficial Extent And Conceptual Model Of Hydrothermal System...  

Open Energy Info (EERE)

and extensive travertine deposits have developed in these more distant localities. The heat flow, distribution of thermal activity, and nature of alteration minerals and fluids...

206

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

for energy. Biomass and Bioenergy, 2003. 25 (2): p. 119-133.resources. Biomass and Bioenergy, 2004. 27 (6): p. 613-620.the U.S.A. Biomass and Bioenergy, 2009. 33 (4): p. 628-634.

He, Wei

2011-01-01T23:59:59.000Z

207

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

S. , et al. , Rheological behaviour of coal-water mixtures.1. Effects of coal type, loading and particle size. Fuel,Rheological behaviour of coal-water mixtures. 2. Effect of

He, Wei

2011-01-01T23:59:59.000Z

208

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

Reactor for the Study of Biomass Pyrolysis Chemistry at Highmineral matter on biomass pyrolysis characteristics. Fuel,Puigjaner, Kinetics of Biomass Pyrolysis: ? a Reformulated

He, Wei

2011-01-01T23:59:59.000Z

209

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

Bajpai, D. and V.K. Tyagi, Biodiesel: Source, Production,UC Davis. Pahl, G. , Biodiesel: growing a new energysulfur, ultra low sulfur and biodiesel blends in a DI diesel

He, Wei

2011-01-01T23:59:59.000Z

210

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

and implications for sustainable energy and agriculture .review. Renewable and Sustainable Energy Reviews, 2010. 14 (security. Renewable and Sustainable Energy Reviews, 2009.

He, Wei

2011-01-01T23:59:59.000Z

211

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

growth. US imported over 3.58 billion barrels of crude oil37]. Crude oil imports by China will be equal to the US by

He, Wei

2011-01-01T23:59:59.000Z

212

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

Higman, C. and M. Burgt, Gasification . 2003: Elsevier/Gulfand N.P. Cheremisinoff, Gasification technologies: a primerbiomass (part 3): gasification technologies. Bioresource

He, Wei

2011-01-01T23:59:59.000Z

213

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

Inc. Dry, M.E. , The fischer-tropsch process - commercialBiomass Conversion to Fischer- Tropsch Products. Energy &heavy oil residuals and Fischer-Tropsch oils. Pyrolysis and

He, Wei

2011-01-01T23:59:59.000Z

214

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

The handbook of biomass combustion and co-firing . 2008:Decomposition and Combustion Behavior of Woody-BiomassEnergy from biomass: a review of combustion and gasification

He, Wei

2011-01-01T23:59:59.000Z

215

Workshops to rate and assign air and water issues for hydrothermal energy development  

DOE Green Energy (OSTI)

The presentations, discussions, and recommendations associated with a semiformal, 2-day workshop organized and hosted by Los Alamos Scientific Laboratory personnel at Los Alamos, NM, for March, 11-12, 1980, and an informal, 2-day workshop hosted by Lawrence Livermore Laboratory at Livermore and Konocti Harbor, CA, from April 15-16, 1980 are described briefly. These workshops were not conducted to determine what the problems are, but rather to determine which ones should be addressed and who should address them. Brief reviews of issues identified by previous workshops and studies are included as background.

Williams, J.M.; Wewerka, E.M.

1980-12-01T23:59:59.000Z

216

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

at a dual fluidised bed gasifier: Impacts of operationsources using Sasol-Lurgi gasifiers. International Journalscale Sasol-Lurgi FBDB gasifier. Fuel, 2008. 87 (13-14): p.

He, Wei

2011-01-01T23:59:59.000Z

217

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

industrial utilization of town gas and used for purpose of illumination in the nineteenth century. Coke ovens

He, Wei

2011-01-01T23:59:59.000Z

218

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

was measured by heating water and wood wastes mixture in theFinally, the heating value of pretreated wood particles wasFinally, the heating value of pretreated wood particles is

He, Wei

2011-01-01T23:59:59.000Z

219

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

and I.L. Thomas, Alternative energy technologies. Nature,for this if no other alternative energy supply is available.in obtaining an alternative and renewable energy supply for

He, Wei

2011-01-01T23:59:59.000Z

220

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

The Path Forward for Biofuels and Biomaterials. Science,University. Drapcho, C.M. , Biofuels Engineering ProcessL. and B.K. Ahring, Biofuels . 2007: Springer. Gosselink,

He, Wei

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

for Agriculture Biomass Feedstock Supply in the Unitedof using biomass as an energy supply. Firstly, biomass is asense, biomass offers an alternative option of energy supply

He, Wei

2011-01-01T23:59:59.000Z

222

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

Laser diffraction particle size measurement system..Fig 4.1 Laser diffraction particle size measurement system

He, Wei

2011-01-01T23:59:59.000Z

223

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

M.J. Keyser, and M. Coertzen, Syngas production from SouthExperimental study on syngas production by co- gasificationTropsch synthesis of the syngas produced in gasification or

He, Wei

2011-01-01T23:59:59.000Z

224

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

Y. , et al. , Biomass co-firing in a pressurized fluidizedof biomass combustion and co-firing . 2008: Earthscan. Mani,energy loss suitability as co-firing through gas phase than

He, Wei

2011-01-01T23:59:59.000Z

225

The Development of a Hydrothermal Method for Slurry Feedstock Preparation for Gasification Technology  

E-Print Network (OSTI)

R. Sinding-Larsen, World oil: reserves, production, politics1-20. IHT. 56% of Proven Oil Reserves Are in the Middle East

He, Wei

2011-01-01T23:59:59.000Z

226

Oxygen Isotope Evidence For Past And Present Hydrothermal Regimes Of Long  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Oxygen Isotope Evidence For Past And Present Hydrothermal Regimes Of Long Valley Caldera, California Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Oxygen Isotope Evidence For Past And Present Hydrothermal Regimes Of Long Valley Caldera, California Details Activities (3) Areas (1) Regions (0) Abstract: Whole-rock oxygen isotope compositions of cores and cuttings from Long Valley exploration wells show that the Bishop Tuff has been an important reservoir for both fossil and active geothermal systems within the caldera. The deep Clay Pit-1 and Mammoth-1 wells on the resurgent dome

227

Comparative assessment of five potential sites for hydrothermal-magma systems: summary  

DOE Green Energy (OSTI)

A comparative assessment of five potential hydrothermal-magma sites for this facet of the Thermal Regimes part of the CSDP has been prepared for the DOE Office of Basic Energy Sciences. The five sites are: The Geysers-Clear Lake, CA, Long Valley, CA, Rio Grande Rift, NM, Roosevelt Hot Springs, UT, and Salton Trough, CA. This site assessment study has drawn together background information (geology, geochemistry, geophysics, and energy transport) on the five sites as a preliminary stage to site selection. Criteria for site selection are that potential sites have identifiable, or likely, hydrothermal systems and associated magma sources, and the important scientific questions can be identified and answered by deep scientific holes. Recommendations were made.

Luth, W.C.; Hardee, H.C.

1980-11-01T23:59:59.000Z

228

Hydrothermal synthesis and electrochemical performance of NiO microspheres with different nanoscale building blocks  

SciTech Connect

NiO microspheres were successfully obtained by calcining the Ni(OH){sub 2} precursor, which were synthesized via the hydrothermal reaction of nickel chloride, glucose and ammonia. The products were characterized by TGA, XRD and SEM. The influences of glucose and reaction temperature on the morphologies of NiO samples were investigated. Moreover, the possible growth mechanism for the spherical morphology was proposed. The charge/discharge test showed that the as-prepared NiO microspheres composed of nanoparticles can serve as an ideal electrode material for supercapacitor due to the spherical hollow structure. -- Graphical Abstract: Fig. 5 is the SEM image of NiO that was prepared in the different hydrothermal reaction temperatures. It showed that reaction temperature played a crucial role for the morphology of products.

Wang Ling; Hao Yanjing; Zhao Yan [College of Chemistry, Sichuan University, Chengdu 610064 (China); Lai Qiongyu, E-mail: laiqy5@hotmail.co [College of Chemistry, Sichuan University, Chengdu 610064 (China); Xu Xiaoyun [College of Chemistry, Sichuan University, Chengdu 610064 (China)

2010-11-15T23:59:59.000Z

229

Exploration strategy for high-temperature hydrothermal systems in Basin and Range province  

DOE Green Energy (OSTI)

A 15-phase strategy of exploration for high-temperature convective hydrothermal resources in the Basin and Range province features a balanced mix of geologic, geochemical, geophysical, hydrologic, and drilling activities. The strategy, based on a study of data submitted under the Department of Energy's Industry Coupled Case Study Program, provides justification for inclusion or exclusion of all pertinent exploration methods. With continuing research on methods of exploration for, and modeling of, convective hydrothermal systems, this strategy is expected to change and become more cost-effective with time. The basic strategy may vary with the geology or hydrology. Personal preferences, budgetary constraints, time and land position constraints, and varied experience may cause industrial geothermal exploration managers to differ with our strategy. For those just entering geothermal exploration, the strategy should be particularly useful; many of its elements may apply in other geologic settings.

Ward, S.H.; Ross, H.P.; Nielson, D.L.

1981-01-01T23:59:59.000Z

230

Strategy of exploration for high temperature hydrothermal systems in the basin and range province  

DOE Green Energy (OSTI)

A fifteen phase strategy of exploration for high temperature convective hydrothermal resources in the basin and range province, recommended herein, features a balanced mix of geological, geochemical, geophysical, hydrological, and drilling activities. The strategy is based on a study of data submitted under the Department of Energy's Industry Coupled Case Study Program. Justification for inclusion in or exclusion from the strategy of all pertinent geoscientific methods is given. With continuing research on methods of exploration for and modeling of convective hydrothermal systems, this strategy is expected to change and become more cost-effective with time. Variations on the basic strategy are to be expected where the geology or hydrology requires it. Personal preferences, budgetary constraints, time and land position constraints, and varied experience may cause industrial geothermal exploration managers to differ with our strategy. For those just entering geothermal exploration, the strategy is expected to be particularly useful.

Ward, S.H.; Ross, H.P.; Nielson, D.L.

1979-12-01T23:59:59.000Z

231

Field-based tests of geochemical modeling codes using New Zealand hydrothermal systems  

DOE Green Energy (OSTI)

Hydrothermal systems in the Taupo Volcanic Zone, North Island, New Zealand are being used as field-based modeling exercises for the EQ3/6 geochemical modeling code package. Comparisons of the observed state and evolution of the hydrothermal systems with predictions of fluid-solid equilibria made using geochemical modeling codes will determine how the codes can be used to predict the chemical and mineralogical response of the environment to nuclear waste emplacement. Field-based exercises allow us to test the models on time scales unattainable in the laboratory. Preliminary predictions of mineral assemblages in equilibrium with fluids sampled from wells in the Wairakei and Kawerau geothermal field suggest that affinity-temperature diagrams must be used in conjunction with EQ6 to minimize the effect of uncertainties in thermodynamic and kinetic data on code predictions.

Bruton, C.J.; Glassley, W.E.; Bourcier, W.L.

1994-06-01T23:59:59.000Z

232

A two-stage planning model for power scheduling in a hydro-thermal system under uncertainty  

E-Print Network (OSTI)

Abstract. A two-stage stochastic programming model for the short- or mid-term cost-optimal electric power production planning is developed. We consider the power generation in a hydro-thermal generation system under uncertainty in demand (or load) and prices for fuel and delivery contracts. The model involves a large number of mixed-integer (stochastic) decision variables and constraints linking time periods and operating power units. A stochastic Lagrangian relaxation scheme is designed by assigning (stochastic) multipliers to all constraints that couple power units. It is assumed that the stochastic load and price processes are given (or approximated) by a finite number of realizations (scenarios). Solving the dual by a bundle subgradient method leads to a successive decomposition into stochastic single unit subproblems. The stochastic thermal and hydro subproblems are solved by a stochastic dynamic programming technique and by a specific descent algorithm, respectively. A Lagrangian heuristics that provides approximate solutions for the primal problem is developed. Numerical results are presented for realistic data from a German power utility and for numbers of scenarios ranging from 5 to 100 and a time horizon of 168 hours. The sizes of the corresponding optimization problems go up to 400.000 binary and 650.000 continuous variables, and more than 1.300.000 constraints. Keywords: stochastic programming, Lagrangian relaxation, unit commitment

Robert Nrnberg; Werner Rmisch

2002-01-01T23:59:59.000Z

233

Hydrothermal pretreatment to prevent scale during liquefaction of certain solid carbonaceous materials  

DOE Patents (OSTI)

Scale formation during the liquefaction of lower ranking coals and similar carbonaceous materials is significantly reduced and/or prevented by hydrothermal pretreatment. The said pretreatment is believed to convert the scale-forming components to the corresponding carbonate prior to liquefaction. The said pretreatment is accomplished at a total pressure within the range from about 1000 to about 4400 psia. Temperature during said pretreatment will generally be within the range from about 500.degree. to about 700.degree. F.

Stone, John B. (Houston, TX); Floyd, Frank M. (Baytown, TX)

1984-01-01T23:59:59.000Z

234

Deep Borehole Measurements for Characterizing the Magma/Hydrothermal System at Long Valley Caldera, CA  

DOE Green Energy (OSTI)

The Magma Energy Program of the Geothermal Technology Division is scheduled to begin drilling a deep (6 km) exploration well in Long Valley Caldera, California in 1989. The drilling site is near the center of the caldera which is associated with numerous shallow (5-7 km) geophysical anomalies. This deep well will present an unparalleled opportunity to test and validate geophysical techniques for locating magma as well as a test of the theory that magma is still present at drillable depths within the central portion of the caldera. If, indeed, drilling indicates magma, the geothermal community will then be afforded the unique possibility of examining the coupling between magmatic and hydrothermal regimes in a major volcanic system. Goals of planned seismic experiments that involve the well include the investigation of local crustal structure down to depths of 10 km as well as the determination of mechanisms for local seismicity and deformation. Borehole electrical and electromagnetic surveys will increase the volume and depth of rock investigated by the well through consideration of the conductive structure of the hydrothermal and underlying regimes. Currently active processes involving magma injection will be studied through observation of changes in pore pressure and strain. Measurements of in situ stress from recovered cores and hydraulic fracture tests will be used in conjunction with uplift data to determine those models for magmatic injection and inflation that are most applicable. Finally, studies of the thermal regime will be directed toward elucidating the coupling between the magmatic source region and the more shallow hydrothermal system in the caldera fill. To achieve this will require careful logging of borehole fluid temperature and chemistry. In addition, studies of rock/fluid interactions through core and fluid samples will allow physical characterization of the transition zone between hydrothermal and magmatic regimes.

Carrrigan, Charles R.

1989-03-21T23:59:59.000Z

235

Isotope and fluid inclusion studies of geological and hydrothermal processes, northern Peru  

DOE Green Energy (OSTI)

Mineralization in the Hualgayoc district of northern Peru occurs in altered Miocene felsic intrusions and in mid-Cretaceous platform sedimentary rocks of the Goyllarisquizga, Inca, and Chulec formations. The ores occur both as stratiform and stratabound pyritiferous base-metal deposits (mantos), and as steeply dipping, sedimentary and intrusive rock-hosted base-metal veins. Igneous rocks in the district are affected by propylytic, sericitic-argillic, sericitic, potassic, and acid-sulfate alteration. K-Ar and Rb-Sr dating and geological evidence indicate multiple stages of intrusive activity and hydrothermal alteration, including close spatial emplacement of two or more separate Miocene magmatic-hydrothermal systems. K-Ar dates on sericite, hydrothermal biotite, and alunite indicate that the most important hydrothermal episodes in the district took place {approx}13.24 and 12.4 Ma. Other K-Ar dates on altered rocks in the district may reflect various amounts of resetting by the emplacement of the 9.05 {+-} 0.2 Ma Hualgayoc rhyodacite. A five-point Rb-Sr isochron for the San Miguel intrusion at Cerro Coymolache yields an age of 45 {+-} 3.4 Ma, which indicates much earlier magmatic activity in this area than recognized previously. Fluid inclusion and paragenetic studies reveal a clear temporal evolution of fluid temperature and chemistry in the San Agustin area at Hualgayoc. Gradually, ore formation shifted to precipitation of vein minerals in the brittle fractures as the mantos became less permeable and were sealed off. Vein formation continued from progressively cooler and more diluted fluids (down to {approx}150{degrees}C and 4.3 wt% NaCl equivalent) as the system waned. No evidence for phase separation is observed in the fluids until the very last paragenetic stage, which contributed no economic mineralization. 53 refs., 15 figs., 7 tabs.

MacFarlane, A.W. [Florida International Univ., Miami, FL (United States); Prol-Ledesma, R.M. [Cd. Universitaria, Coyoacan (Mexico); Conrad, M.E. [Lawrence Berkeley Lab., CA (United States)

1994-07-01T23:59:59.000Z

236

Site specific analysis of geothermal development. Volume 1. Summary report  

SciTech Connect

MITRE/Metrek has analyzed development scenarios for 37 hydrothermal and geopressured prospects in the United States to assist DOE's Division of Geothermal Energy in mission-oriented planning of geothermal resource development. A summary of the site-specific analyses is presented with particular emphasis on possible recommendations for the Federal Geothermal Program.

Leigh, J.; Cohen, A.; Jacobsen, W.; Trehan, R.

1978-08-01T23:59:59.000Z

237

Comparative assessment of five potential sites for hydrothermal-magma systems: energy transport  

DOE Green Energy (OSTI)

A comparative assessment of five sites is being prepared as part of a Continental Scientific Drilling Program (CSDP) review of thermal regimes for the purpose of scoping areas for future research and drilling activities. This background report: discusses the various energy transport processes likely to be encountered in a hydrothermal-magma system, reviews related literature, discusses research and field data needs, and reviews the sites from an energy transport viewpoint. At least three major zones exist in the magma-hydrothermal transport system: the magma zone, the hydrothermal zone, and the transition zone between the two. Major energy transport questions relate to the nature and existence of these zones and their evolution with time. Additional energy transport questions are concerned with the possible existence of critical state and super-critical state permeable convection in deep geothermal systems. A review of thermal transport models emphasizes the fact that present transport models and computational techniques far outweigh the scarcity and quality of deep field data.

Hardee, H.C.

1980-09-01T23:59:59.000Z

238

Hydrothermal opportunities and challenges in the basin and range  

DOE Green Energy (OSTI)

Geothermal development in the Basin and Range is a viable alternative for a portion of the new power. The existing fields in operation, short development lead times, ability to add incremental power generation, and the favorable environmental aspects all bode well for the industry. The Basin and Range province has a large inventory of both developed and undeveloped prospects. Currently, there are 434 MW{sub e} (gross) of installed generating capacity, which has been added at an average rate 67 MW{sub e} per year. Additional areas can be considered as maturing exploration prospects. An improved exploration and development approach would rely on a multi-disciplinary team of geologists, geochemists, geophysicists, and reservoir engineers. An exploration model would be developed by the team and continually reevaluated as exploration and development progressed. The role of the reservoir engineer would be the ongoing incorporation of geologic and engineering data into a reservoir model, providing a reality check on the exploration team. At each stage, the model is available to management for the latest estimates of reservoir deliverability, project economics, a reservoir management plan, and be used for well site selection. 15 refs., 3 figs.

Faulder, D.D.

1991-01-01T23:59:59.000Z

239

Rock deformation in hydrothermal systems: the nature of fractures in plutons and their host rocks. Technical progress report  

DOE Green Energy (OSTI)

The purpose of this program is to accumulate the types of field data which are important for the analysis of magma-hydrothermal systems. The structural effects of thermal processes were identified in order to distinguish the thermally induced deformations from the deformations that occurred subsequent to complete cooling of the system. Mapping techniques were developed to record the structural data on the ground from local domains characteristic of larger areas in the magma chamber, and in the air from low-angle oblique aerial photography of the entire region. The ground system is complete and preliminary testing is currently being carried out to verify the method. The results indicate that granitic crystalline rocks have no structural resistance to thermal perturbations. If nuclear wastes are to be stored in granite, precautionary buffers would have to be incorporated into the system. A total of 30 fossil magma chambers have been studied over the past 2 years. An extensive set of fracture imagery has been collected, together with information related to the geological history of the plutons. Fossil magma chambers in Arizona, Utah, California, Washington, Montana, and British Columbia have been studied.

Norton, D.

1981-11-01T23:59:59.000Z

240

Review and Assessment of Commercial Vendors/Options for Feeding and Pumping Biomass Slurries for Hydrothermal Liquefaction  

Science Conference Proceedings (OSTI)

The National Advanced Biofuels Consortium is working to develop improved methods for producing high-value hydrocarbon fuels. The development of one such method, the hydrothermal liquefaction (HTL) process, is being led by the Pacific Northwest National Laboratory (PNNL). The HTL process uses a wet biomass slurry at elevated temperatures (i.e., 300 to 360C [570 to 680F]) and pressures above the vapor pressure of water (i.e., 15 to 20 MPa [2200 to 3000 psi] at these temperatures) to facilitate a condensed-phase reaction medium. The process has been successfully tested at bench-scale and development and testing at a larger scale is required to prove the viability of the process at production levels. Near-term development plans include a pilot-scale system on the order of 0.5 to 40 gpm, followed by a larger production-scale system on the order of 2000 dry metric tons per day (DMTPD). A significant challenge to the scale-up of the HTL process is feeding a highly viscous fibrous biomass wood/corn stover feedstock into a pump system that provides the required 3000 psi of pressure for downstream processing. In October 2011, PNNL began investigating commercial feed and pumping options that would meet these HTL process requirements. Initial efforts focused on generating a HTL feed and pump specification and then providing the specification to prospective vendors to determine the suitability of their pumps for the pilot-scale and production-scale plants. Six vendors were identified that could provide viable equipment to meet HTL feed and/or pump needs. Those six vendors provided options consisting three types of positive displacement pumps (i.e., diaphragm, piston, and lobe pumps). Vendors provided capabilities and equipment related to HTL application. This information was collected, assessed, and summarized and is provided as appendices to this report.

Berglin, Eric J.; Enderlin, Carl W.; Schmidt, Andrew J.

2012-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Economics of geothermal electricity generation from hydrothermal resources  

DOE Green Energy (OSTI)

The most important factors affecting the economics of geothermal electricity production are the wellhead temperature or enthalpy, the well flow rate, and the cost of the wells. The capital cost of the powerplant is significant, but not highly sensitive to these resource characteristics. The optimum geothermal plant size will remain small, usually in the 50-100 MWe range. Therefore, the opportunities for achieving significant cost reductions through ''economies of scale'' are small. The steam and binary power cycles are closely competitive; the binary cycle appears better when the brine temperature is below 200-230/sup 0/C, and the flashed steam cycle appears better above this range. Geothermal electricity production is capital intensive; over 75 percent of the generation costs are fixed costs related to capital investment. Technological advances are needed to reduce costs from marginal geothermal resources and thus to stimulate geothermal energy development. Significant reduction in power costs would be achieved by reducing well drilling costs, stimulating well flow rates, reducing powerplant capital costs, increasing powerplant efficiency and utilization, and developing more effective exploration techniques for locating and assessing high-quality resources. (auth)

Bloomster, C.H.; Knutsen, C.A.

1976-04-23T23:59:59.000Z

242

Economics of geothermal electricity generation from hydrothermal resources  

SciTech Connect

The most important factors affecting the economics of geothermal electricity production are the wellhead temperature or enthalpy, the well flow rate, and the cost of the wells. The capital cost of the powerplant is significant, but not highly sensitive to these resource characteristics. The optimum geothermal plant size will remain small, usually in the 50-100 MWe range. Therefore, the opportunities for achieving significant cost reductions through ''economies of scale'' are small. The steam and binary power cycles are closely competitive; the binary cycle appears better when the brine temperature is below 200-230/sup 0/C, and the flashed steam cycle appears better above this range. Geothermal electricity production is capital intensive; over 75 percent of the generation costs are fixed costs related to capital investment. Technological advances are needed to reduce costs from marginal geothermal resources and thus to stimulate geothermal energy development. Significant reduction in power costs would be achieved by reducing well drilling costs, stimulating well flow rates, reducing powerplant capital costs, increasing powerplant efficiency and utilization, and developing more effective exploration techniques for locating and assessing high-quality resources. (auth)

Bloomster, C.H.; Knutsen, C.A.

1976-04-23T23:59:59.000Z

243

Hydrothermal Testing of K Basin Sludge and N Reactor Fuel at Sludge Treatment Project Operating Conditions  

DOE Green Energy (OSTI)

The Sludge Treatment Project (STP), managed for the U. S. DOE by Fluor Hanford (FH), was created to design and operate a process to eliminate uranium metal from K Basin sludge prior to packaging for Waste Isolation Pilot Plant (WIPP). The STP process uses high temperature liquid water to accelerate the reaction, produce uranium dioxide from the uranium metal, and safely discharge the hydrogen. Under nominal process conditions, the sludge will be heated in pressurized water at 185C for as long as 72 hours to assure the complete reaction (corrosion) of up to 0.25-inch diameter uranium metal pieces. Under contract to FH, the Pacific Northwest National Laboratory (PNNL) conducted bench-scale testing of the STP hydrothermal process in November and December 2006. Five tests (~50 ml each) were conducted in sealed, un-agitated reaction vessels under the hydrothermal conditions (e.g., 7 to 72 h at 185C) of the STP corrosion process using radioactive sludge samples collected from the K East Basin and particles/coupons of N Reactor fuel also taken from the K Basins. The tests were designed to evaluate and understand the chemical changes that may be occurring and the effects that any changes would have on sludge rheological properties. The tests were not designed to evaluate engineering aspects of the process. The hydrothermal treatment affected the chemical and physical properties of the sludge. In each test, significant uranium compound phase changes were identified, resulting from dehydration and chemical reduction reactions. Physical properties of the sludge were significantly altered from their initial, as-settled sludge values, including, shear strength, settled density, weight percent water, and gas retention.

Delegard, Calvin H.; Schmidt, Andrew J.; Thornton, Brenda M.

2007-03-30T23:59:59.000Z

244

Reactive Separations via a Hydrothermally Stable Hydrogen Selective Membrane. Final Report  

DOE Green Energy (OSTI)

In this SBIR Phase I program, we have successfully completed the fabrication of SiC-based hydrogen selective membranes suitable for use as a membrane reactor for steam-methane reforming applications. Hydrothermal stability was performed for selected membrane to demonstrate their stability for appx. 50 hours under the proposed reforming condition. In addition, several mechanistic study was conducted to elucidate the SiC membrane formation mechanism. This understanding will facilitate membrane optimization work to be proposed for the Phase II study. The reaction study was postponed to the Phase II study.

Ciora, R. J.; Liu, P. KT.

2002-10-29T23:59:59.000Z

245

Comparative assessment of five potential sites for magma: hydrothermal systems - geophysics  

DOE Green Energy (OSTI)

As part of a comparative assessment for the Continental Scientific Drilling Program, geophysical data were used, to characterize and evaluate potential magma-hydrothermal targets at five drill sites in the western United States. The sites include Roosevelt Hot Springs, Utah, the Rio Grande Rift, New Mexico, and The Geysers-Clear Lake, Long Valley, and Salton Trough areas, California. This summary discusses the size, depth, temperature, and setting of each potential target, as well as relvant scientific questions about their natures and the certainty of their existence.

Kasameyer, P.

1980-09-02T23:59:59.000Z

246

Hydrothermal oxidation of Navy shipboard excess hazardous materials  

SciTech Connect

This study demonstrated effective destruction, using a novel supercritical water oxidation reactor, of oil, jet fuel, and hydraulic fluid, common excess hazardous materials found on-board Navy vessels. This reactor uses an advanced injector design to mix the hazardous compounds with water, oxidizer, and a supplementary fuel and it uses a transpiring wall to protect the surface of the reactor from corrosion and salt deposition. Our program was divided into four parts. First, basic chemical kinetic data were generated in a simple, tubular-configured reactor for short reaction times (<1 second) and long reaction times (>5 seconds) as a function of temperature. Second, using the data, an engineering model was developed for the more complicated industrial reactor mentioned above. Third, the three hazardous materials were destroyed in a quarter-scale version of the industrial reactor. Finally, the test data were compared with the model. The model and the experimental results for the quarter-scale reactor are described and compared in this report. A companion report discusses the first part of the program to generate basic chemical kinetic data. The injector and reactor worked as expected. The oxidation reaction with the supplementary fuel was initiated between 400 {degrees}C and 450 {degrees}C. The released energy raised the reactor temperature to greater than 600 {degrees}C. At that temperature, the hazardous materials were efficiently destroyed in less than five seconds. The model shows good agreement with the test data and has proven to be a useful tool in designing the system and understanding the test results. 16 refs., 17 figs., 11 tabs.

LaJeunesse, C.A.; Haroldsen, B.L.; Rice, S.F.; Brown, B.G.

1997-03-01T23:59:59.000Z

247

Hydrothermal oxidation of Navy shipboard excess hazardous materials  

Science Conference Proceedings (OSTI)

This study demonstrated effective destruction, using a novel supercritical water oxidation reactor, of oil, jet fuel, and hydraulic fluid, common excess hazardous materials found on-board Navy vessels. This reactor uses an advanced injector design to mix the hazardous compounds with water, oxidizer, and a supplementary fuel and it uses a transpiring wall to protect the surface of the reactor from corrosion and salt deposition. Our program was divided into four parts. First, basic chemical kinetic data were generated in a simple, tubular-configured reactor for short reaction times (5 seconds) as a function of temperature. Second, using the data, an engineering model was developed for the more complicated industrial reactor mentioned above. Third, the three hazardous materials were destroyed in a quarter-scale version of the industrial reactor. Finally, the test data were compared with the model. The model and the experimental results for the quarter-scale reactor are described and compared in this report. A companion report discusses the first part of the program to generate basic chemical kinetic data. The injector and reactor worked as expected. The oxidation reaction with the supplementary fuel was initiated between 400 {degrees}C and 450 {degrees}C. The released energy raised the reactor temperature to greater than 600 {degrees}C. At that temperature, the hazardous materials were efficiently destroyed in less than five seconds. The model shows good agreement with the test data and has proven to be a useful tool in designing the system and understanding the test results. 16 refs., 17 figs., 11 tabs.

LaJeunesse, C.A.; Haroldsen, B.L.; Rice, S.F.; Brown, B.G.

1997-03-01T23:59:59.000Z

248

Heat flow in relation to hydrothermal activity in the southern Black Rock Desert, Nevada  

DOE Green Energy (OSTI)

As part of an investigation of the Gerlach NE KGRA (Known Geothermal Resource Area) a number of heat-flow measurements were made in playa sediments of the southern Black Rock Desert, northwestern Nevada. These data together with additional previously unpublished heat-flow values reveal a complex pattern of heat flow with values ranging between 1.0 to 5.0 HFU (40 to 100 mWm/sup -2/) outside of the hot springs area. The mean heat flow for the 13 reported sites in the southern Black Rock Desert is 1.8 +- 0.15 HFU (75 +- 6 mWm/sup -2/). The complexity of the pattern of heat flow is believed to arise from hydrothermal circulation supporting the numerous hot springs throughout the region. The fact that the lowest observed heat flow occurs in the deepest part of the basin strongly suggests that fluid movement within the basin represents part of the recharge for the hydrothermal system. A thermal balance for the system incorporating both anomalous conductive heat loss and convective heat loss from the spring systems indicate a total energy loss of about 8.0 Mcal/sec or 34 megawatts over an estimated 1000 km/sup 2/ region. Consideration of this additional heat loss yields a mean regional heat flow of 2.5 + HFU (100 + mWm/sup -2/) and warrants inclusion of this region in the Battle Mountain heat-flow high (Lachenbruch and Sass, 1977, 1978).

Sass, J.H.; Zoback, M.L.; Galanis, S.P. Jr.

1979-01-01T23:59:59.000Z

249

Lignocellulose Recalcitrance Screening by Integrated High Throughput Hydrothermal Pretreatment and Enzymatic Saccharification  

SciTech Connect

We report a novel 96-well multiplate reactor system for comparative analysis of lignocellulose recalcitrance via integrated hydrothermal pretreatment and enzymatic saccharification. The system utilizes stackable nickel/gold-plated 96-well aluminum reactor plates, a clamping device fit to a standard Parr reactor, and robotics for efficient liquids and solids handling. A capacity of 20 plates allows up to 1,920 separate hydrothermal reactions per run. Direct and rapid analysis of key end-products, glucose and xylose, is facilitated by the use of glucose oxidase/peroxidase and xylose dehydrogenase-linked assays. To demonstrate efficacy, a set of 755 poplar core samples from the US Department of Energy's BioEnergy Science Center was tested. Total sugar release ranged from 0.17 to 0.64 g/g of biomass and correlated strongly with the ratio of syringyl to guaiacyl lignins in the samples. Variance among sample replicates was sufficiently minimal to permit clear assignment of differences in recalcitrance throughout this large sample set.

Selig, M. J.; Tucker, M. P.; Sykes, R. W.; Reichel, K. L.; Brunecky, R.; Himmel, M. E.; Davis, M. F.; Decker, S. R.

2010-04-01T23:59:59.000Z

250

Hydrothermal alteration at Roosevelt Hot Springs KGRA: DDH 1976-1  

DOE Green Energy (OSTI)

Hot waters of the Roosevelt Thermal Area, Utah, have altered granitic rocks and detritus of the Mineral Range pluton, Utah. Alteration and mineral deposition recognized in a 200' drill core from DDH 1-76 is most intense in the upper 100 feet which consists of altered alluvium and opal deposits; the lower 100 feet is weakly altered quartz monzonite. Petrographic, x-ray, and chemical methods were used to characterize systematic changes in chemistry and mineralogy. Comparison of the alteration mineral assemblages with known water chemistry and equilibrium activity diagrams suggests that a simple solution equilibrium model cannot account for the alteration. A model is proposed in which upward moving thermal water supersaturated with respect to quartz and a downward moving cool water undersaturated with respect to quartz produces the observed alteration. An estimate of the heat flow contributions from hydrothermal alteration was made by calculating reaction enthalpies for alteration reactions at each depth. The estimated heat flow varied from .02 HFU (for 200' depth, 400,000 yr duration, and no sulfur oxidation) to 67 HFU (for 5,000' depth, 1,000 yr duration, and all sulfur oxidized from sulfide). Heat flow contributions from hydrothermal alteration are comparable with those from a cooling granitic magma.

Bryant, N.L.; Parry, W.T.

1977-09-01T23:59:59.000Z

251

Faults and gravity anomalies over the East Mesa hydrothermal-geothermal system  

DOE Green Energy (OSTI)

Detailed interpretations of gravity anomalies over geothermal systems may be extremely useful for mapping the fracture or fault systems that control the circulation of the thermal waters. This approach seems to be particularly applicable in areas like the Salton Trough where reactions between the thermal waters and the porous sediments produce authigenic-hydrothermal minerals in sufficient quantity to cause distinct gravity anomalies at the surface. A 3-D inversion of the residual Bouguer gravity anomaly over the East Mesa geothermal field was made to examine the densified volume of rock. We show that the data not only resolve a north-south and an intersecting northwest structure, but that it may be possible to distinguish between the active present-day hydrothermal system and an older and cooler part of the system. The densified region is compared spatially to self-potential, thermal and seismic results and we find a good concordance between the different geophysical data sets. Our results agree with previous studies that have indicated that the main feeder fault recharging the East Mesa reservoir dips steeply to the west.

Goldstein, N.E.; Carle, S.

1986-05-01T23:59:59.000Z

252

Hydrothermal factors in porosity evolution and caprock formation at the Geysers steam field, California--insight from the Geysers Coring Project  

DOE Green Energy (OSTI)

The Department of Energy (DOE)/geothermal industry-sponsored Geysers Coring Project (GCP) has yielded 236.8 m of continuous core apparently spanning the transition between the uppermost Geysers steam reservoir and its caprock. Both zones in the corehole are developed in superficially similar, fractured, complexly veined and locally sericitized, Franciscan (late Mesozoic) graywacke-argillite sequences. However, whereas the reservoir rocks host two major fluid conduits (potential steam entries), the caprock is only sparingly permeable. This discrepancy appears to reflect principally vein texture and mineralogy. Two types of veins are common in the core--randomly-oriented, Franciscan metamorphic quartz-calcite veins; and high-angle, late Cenozoic veins deposited by The Geysers hydrothermal system. The older veins locally contain hydrothermal carbonate-dissolution vugs, which, although concentrated at the larger fluid conduit, are scattered throughout the core. The younger veins, commonly with intercrystalline vugs, consist dominantly of euhedral quartz, calcite, K-feldspar, wairakite, and pyrite--those in the reservoir rock also contain minor epidote and illite. The corresponding caprock veins are devoid of epidote but contain abundant, late-stage, mixed-layer illite/smecite (5-18% smectite interlayers) with minor chlorite/smectite (40-45% smectite interlayers). We suggest that clots of these two expandable clays in the caprock clog otherwise permeable veins and carbonate-dissolution networks at strategic sites to produce or enhance the seal on the underlying steam reservoir. Illite/smectite geothermometry indicates that the SB-15-D caprock clays were precipitated in the approximate temperature range 180-218 C, and those in the reservoir at about 218-238 C. These temperatures, along with occurrence of the clays on commonly etched calcite, K-feldspar, or wairakite, suggest that the clays were precipitated from mildly acidic steam condensate under conditions similar to those now prevailing.

Hulen, Jeffrey B.; Nielson, Dennis L.

1995-01-26T23:59:59.000Z

253

Geothermal materials development  

DOE Green Energy (OSTI)

Advances in the development of new materials, the commercial availabilities of which are essential for the attainment of Hydrothermal Category Level 1 and 2 Objectives, continue to be made in the Geothermal Materials Development Project. Many successes have already been accrued and the results transferred to industry. In FY 1990, the R D efforts were focused on reducing well drilling and completion costs and on mitigating corrosion in well casing. Activities on lost circulation control materials, CO{sub 2}- resistant lightweight cements, and thermally conductive corrosion and scale-resistant protective liner systems have reached the final development stages, and cost-shared field tests are planned for the FY 1991--1992 time frame. Technology transfer efforts on high temperature elastomers for use in drilling tools are continuing under Geothermal Drilling Organization (GDO) sponsorship.

Kukacka, L.E.

1991-02-01T23:59:59.000Z

254

Caldera processes and magma-hydrothermal systems continental scientific drilling program: thermal regimes, Valles caldera research, scientific and management plan  

DOE Green Energy (OSTI)

Long-range core-drilling operations and initial scientific investigations are described for four sites in the Valles caldera, New Mexico. The plan concentrates on the period 1986 to 1993 and has six primary objectives: (1) study the origin, evolution, physical/chemical dynamics of the vapor-dominated portion of the Valles geothermal system; (2) investigate the characteristics of caldera fill and mechanisms of caldera collapse and resurgence; (3) determine the physical/chemical conditions in the heat transfer zone between crystallizing plutons and the hydrothermal system; (4) study the mechanism of ore deposition in the caldera environment; (5) develop and test high-temperature drilling techniques and logging tools; and (6) evaluate the geothermal resource within a large silicic caldera. Core holes VC-2a (500 m) and VC-2b (2000 m) are planned in the Sulphur Springs area; these core holes will probe the vapor-dominated zone, the underlying hot-water-dominated zone, the boiling interface and probable ore deposition between the two zones, and the deep structure and stratigraphy along the western part of the Valles caldera fracture zone and resurgent dome. Core hole VC-3 will involve reopening existing well Baca number12 and deepening it from 3.2 km (present total depth) to 5.5 km, this core hole will penetrate the deep-crystallized silicic pluton, investigate conductive heat transfer in that zone, and study the evolution of the central resurgent dome. Core hole VC-4 is designed to penetrate deep into the presumably thick caldera fill in eastern Valles caldera and examine the relationship between caldera formation, sedimentation, tectonics, and volcanism. Core hole VC-5 is to test structure, stratigraphy, and magmatic evolution of pre-Valles caldera rocks, their relations to Valles caldera, and the influences of regional structure on volcanism and caldera formation.

Goff, F.; Nielson, D.L. (eds.)

1986-05-01T23:59:59.000Z

255

Economic and engineering studies for hydrothermal electric power plants. Final technical report, September 15, 1980-December 31, 1981  

DOE Green Energy (OSTI)

Seven pre-conceptual designs of small hydrothermal power plants are presented covering resource temperature of 341/sup 0/F, 405/sup 0/F, and 515/sup 0/F and considering both flashed steam and binary cycle approaches for each temperature. These design studies are presented in six reports. A separate abstract was prepared for each report. (MHR)

Pitts, D.R.

1981-01-01T23:59:59.000Z

256

Salt Wells Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Salt Wells Geothermal Area Salt Wells Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Salt Wells Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Future Plans 5 Exploration History 6 Well Field Description 7 Research and Development Activities 8 Technical Problems and Solutions 9 Geology of the Area 9.1 Regional Setting 9.2 Stratigraphy 9.3 Structure 10 Hydrothermal System 11 Heat Source 12 Geofluid Geochemistry 13 NEPA-Related Analyses (9) 14 Exploration Activities (28) 15 References Area Overview Geothermal Area Profile Location: Nevada Exploration Region: Northwest Basin and Range Geothermal Region GEA Development Phase: Operational"Operational" is not in the list of possible values (Phase I - Resource Procurement and Identification, Phase II - Resource Exploration and Confirmation, Phase III - Permitting and Initial Development, Phase IV - Resource Production and Power Plant Construction) for this property.

257

Salt Wells Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Salt Wells Geothermal Area Salt Wells Geothermal Area (Redirected from Salt Wells Area) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Salt Wells Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Future Plans 5 Exploration History 6 Well Field Description 7 Research and Development Activities 8 Technical Problems and Solutions 9 Geology of the Area 9.1 Regional Setting 9.2 Stratigraphy 9.3 Structure 10 Hydrothermal System 11 Heat Source 12 Geofluid Geochemistry 13 NEPA-Related Analyses (9) 14 Exploration Activities (28) 15 References Area Overview Geothermal Area Profile Location: Nevada Exploration Region: Northwest Basin and Range Geothermal Region GEA Development Phase: Operational"Operational" is not in the list of possible values (Phase I - Resource Procurement and Identification, Phase II - Resource Exploration and Confirmation, Phase III - Permitting and Initial Development, Phase IV - Resource Production and Power Plant Construction) for this property.

258

Hydrothermal Alteration Mineral Mapping Using Hyperspectral Imagery in Dixie Valley, Nevada  

DOE Green Energy (OSTI)

Hyperspectral (HyMap) data was used to map the location of outcrops of high temperature, hydrothermally alterated minerals (including alunite, pyrophyllite, and hematite) along a 15 km swath of the eastern front of the Stillwater Mountain Range in Dixie Valley, Nevada. Analysis of this data set reveals that several outcrops of these altered minerals exist in the area, and that one outcrop, roughly 1 square kilometer in area, shows abundant high temperature alteration. Structural analysis of the altered region using a Digital Elevation Model (DEM) suggests that this outcrop is bounded on all sides by a set of cross-cutting faults. This fault set lies within the Dixie Valley Fault system (Caskey et al. 1996). Both the intense alteration in this area and the presence of cross-cutting faults indicate a high probability of recent hot fluid escape.

Kennedy-Bowdoin, T; Martini, B A; Silver, E A; Pickles, W L

2004-04-02T23:59:59.000Z

259

The use of air as a natural tracer infractured hydrothermal systems, Los Azufres, Mexico, case study  

DOE Green Energy (OSTI)

Injection of atmospheric air mixed with cold water has been occurring since 1982 at the Los Azufres geothermal field. Several chemical and thermodynamical evidences show that air injection into this fractured hydrothermal system could be considered as a long term natural tracer test. Nitrogen and Argon separated from the air mixture migrate, under the action of the induced injection-extraction gradient, from reinjection sectors to production zones following preferential paths closely related to high permeability conduits. A coarse numerical estimation of the average permeability tensor existing at Tejamaniles, the southern sector, explains the unsuccessful recovery of the artificial tracer tests performed in past years: the anisotropic nature of the fractured volcanic rock would demand considerably quantities of tracer in order to be detected at the producing wells, especially when fluid extraction was low. At the same time concentrations of calcium, cesium, chloride, potassium, rubidium and sodium, are increasing in the liquid produced by the oldest wells of this field's sector.

Mario Cesar Sudrez Arriaga; Hector Gutierrez Puente, Josefina Moreno Ochoa

1991-01-01T23:59:59.000Z

260

Methods for sulfate removal in liquid-phase catalytic hydrothermal gasification of biomass  

Science Conference Proceedings (OSTI)

Processing of wet biomass feedstock by liquid-phase catalytic hydrothermal gasification must address catalyst fouling and poisoning. One solution can involve heating the wet biomass with a heating unit to a pre-treatment temperature sufficient for organic constituents in the feedstock to decompose, for precipitates of inorganic wastes to form, for preheating the wet feedstock in preparation for subsequent removal of soluble sulfate contaminants, or combinations thereof. Processing further includes reacting the soluble sulfate contaminants with cations present in the feedstock material to yield a sulfate-containing precipitate and separating the inorganic precipitates and/or the sulfate-containing precipitates out of the wet feedstock. Having removed much of the inorganic wastes and the sulfate contaminants that can cause poisoning and fouling, the wet biomass feedstock can be exposed to the heterogenous catalyst for gasification.

Elliott, Douglas C; Oyler, James

2013-12-17T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" from the National Library of EnergyBeta (NLEBeta).
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261

Possible evidence for fluid-rock oxygen isotope disequilibrium in hydrothermal systems  

DOE Green Energy (OSTI)

There is ample evidence from geothermal systems that isotope temperatures estimated from the oxygen isotope fractionation between alteration phases and coexisting aquifer fluids agree closely with measured bore-hole temperatures. Similar, but limited evidence is found in epithermal vein deposits where isotopes temperature agree well with fluid inclusion homogenization temperature. Conversely, many hydrothermal systems exhibit varying degrees of fluid-rock oxygen isotope equilibration. There appears to be a crude relationship between increasing degree of equilibrium and increasing temperature and salinity. The observed variations in the degree of exchange may have resulted from local, self-sealing of the fracture network prior to equilibration. The ability for fracture to remain open or to propogate allowing continued fluid flow may be the deciding factor in the attainment of isotopic equilibration.

Cole, D.R.

1992-01-01T23:59:59.000Z

262

Possible evidence for fluid-rock oxygen isotope disequilibrium in hydrothermal systems  

DOE Green Energy (OSTI)

There is ample evidence from geothermal systems that isotope temperatures estimated from the oxygen isotope fractionation between alteration phases and coexisting aquifer fluids agree closely with measured bore-hole temperatures. Similar, but limited evidence is found in epithermal vein deposits where isotopes temperature agree well with fluid inclusion homogenization temperature. Conversely, many hydrothermal systems exhibit varying degrees of fluid-rock oxygen isotope equilibration. There appears to be a crude relationship between increasing degree of equilibrium and increasing temperature and salinity. The observed variations in the degree of exchange may have resulted from local, self-sealing of the fracture network prior to equilibration. The ability for fracture to remain open or to propogate allowing continued fluid flow may be the deciding factor in the attainment of isotopic equilibration.

Cole, D.R.

1992-04-01T23:59:59.000Z

263

Differences on the conversion of celestite in solutions bearing monovalent ions under hydrothermal conditions  

SciTech Connect

The replacement of SO{sub 4} {sup 2-} ions by monovalent ions in mineral SrSO{sub 4} crystals was investigated under hydrothermal conditions by using aqueous solutions bearing F{sup -} and OH{sup -} ions. Experiments were conducted at various temperatures (150-250 {sup o}C) for different reaction intervals (1-96 h), with M {sup -}/SO{sub 4} {sup 2-} molar ratios of 1, 5 and 10, where M {sup -}=F{sup -} or OH{sup -}. The celestite crystals were completely converted into SrF{sub 2} crystals, at 200 {sup o}C using a F{sup -}/SO{sub 4} {sup 2-} molar ratio=5 for 24 h. The morphology of the converted SrF{sub 2} crystals indicated that the heteroionic conversion proceeded by a pseudomorphic replacement process, because the transformed crystals maintained their original shape and dimensions. In contrast, the SrSO{sub 4} crystals were instantaneously converted into the Sr(OH){sub 2} phase by a bulk dissolution-recrystallization mechanism, resulting in the formation of large transparent acicular Sr(OH){sub 2} crystals. The differences on the conversion process are mainly associated with the chemical interaction between the mineral crystal and the hydrothermal fluid. In addition, the chemical stability of the converted phase with low solubility is also essential for the heteroionic conversion to proceed by the pseudomorphic replacement process. - Graphical abstract: Typical SEM image of the reaction interface determined on partially converted SrSO{sub 4} crystals obtained at 250 {sup o}C after 6 h in a NaF solution with a F{sup -}/SO{sub 4} {sup 2-} molar ratio=10.

Rendon-Angeles, J.C. [Research Center for Advanced Studies of the NPI, Saltillo-Campus, Ramos Arizpe, 25900, Coah. (Mexico)]. E-mail: jcarlos.rendon@cinvestav.edu.mx; Pech-Canul, M.I. [Research Center for Advanced Studies of the NPI, Saltillo-Campus, Ramos Arizpe, 25900, Coah. (Mexico); Lopez-Cuevas, J. [Research Center for Advanced Studies of the NPI, Saltillo-Campus, Ramos Arizpe, 25900, Coah. (Mexico); Research Center for Applied Chemistry, Saltillo, 25253, Coah. (Mexico); Matamoros-Veloza, Z. [Saltillo Institute of Technology, Department Metal-Mecanica, Saltillo, 25820, Coah. (Mexico); Yanagisawa, K. [Research Laboratory of Hydrothermal Chemistry, Kochi University, Kochi 780-8520 (Japan)

2006-12-15T23:59:59.000Z

264

Journal of the Geological Society, London, Vol. 163, 2006, pp. 671682. Printed in Great Britain. Structure and evolution of hydrothermal vent complexes in the Karoo Basin,  

E-Print Network (OSTI)

, formed at c. 183 Ma, is characterized by the presence of voluminous basaltic intrusive complexes within the Karoo Basin, extrusive lava sequences and hydrothermal vent complexes. These last are pipe

Svensen, Henrik

265

Synchrotron x-ray spectroscopy of Eu/HNO{sub 3} aqueous solutions at high temperatures and pressures and Nb-bearing silicate melt phases coexisting with hydrothermal fluids using a modified hydrothermal diamond anvil cell and rail assembly  

Science Conference Proceedings (OSTI)

A modified hydrothermal diamond anvil cell (HDAC) rail assembly has been constructed for making synchrotron x-ray absorption spectroscopy, x-ray fluorescence, and x-ray mapping measurements on fluids or solid phases in contact with hydrothermal fluids up to {approx}900 deg. C and 700 MPa. The diamond anvils of the HDAC are modified by laser milling grooves or holes, for the reduction of attenuation of incident and fluorescent x rays and sample cavities. The modified HDAC rail assembly has flexibility in design for measurement of light elements at low concentrations or heavy elements at trace levels in the sample and the capability to probe minute individual phases of a multiphase fluid-based system using focused x-ray microbeam. The supporting rail allows for uniform translation of the HDAC, rotation and tilt stages, and a focusing mirror, which is used to illuminate the sample for visual observation using a microscope, relative to the direction of the incident x-ray beam. A structure study of Eu(III) aqua ion behavior in high-temperature aqueous solutions and a study of Nb partitioning and coordination in a silicate melt in contact with a hydrothermal fluid are described as applications utilizing the modified HDAC rail assembly.

Mayanovic, Robert A.; Anderson, Alan J.; Bassett, William A.; Chou, I-Ming [Department of Physics, Astronomy and Materials Science, Missouri State University, Springfield, Missouri 65897 (United States); Department of Earth Sciences, St. Francis Xavier University, P.O. Box 5000, Antigonish, Nova Scotia B2G 2W5 (Canada); Department of Earth and Atmospheric Sciences, Cornell University, Ithaca, New York 14853 (United States); MS 954, U.S. Geological Survey, Reston, Virginia 20192 (United States)

2007-05-15T23:59:59.000Z

266

Monodisperse spindle-like FeWO{sub 4} nanoparticles: Controlled hydrothermal synthesis and enhanced optical properties  

SciTech Connect

Monodisperse FeWO{sub 4} nanoparticles with specific spindle-like morphology have been synthesized in the presence of citric acid through hydrothermal process. In the synthesis route, citric acid played four roles such as the reducing agent, chelating regents, structure-directing agent and stabilizing agents. In addition, the morphology of FeWO{sub 4} was dramatically tuned by the pH value of the precursor medium. The optical properties of FeWO{sub 4} were investigated with UV-Vis spectra and photoluminescence spectroscopy. The photocatalytic experiments demonstrated that the decomposition efficiency of the monodisperse spindle-like FeWO{sub 4} nanoparticles is 74% after 30 min of UV irradiation, which displayed remarkable enhanced photodegradation activity compared with ordinary FeWO{sub 4} sample (57%) and normal TiO{sub 2} photocatalysts P-25 (56%). - Monodisperse spindle-like FeWO{sub 4} nanoparticles with enhanced photocatalytic activities. Highlights: Black-Right-Pointing-Pointer Monodisperse spindle-like FeWO{sub 4} were synthesized with hydrothermal method. Black-Right-Pointing-Pointer Citric acid plays key roles in the hydrothermal synthesis. Black-Right-Pointing-Pointer Their morphology can be tuned with pH value of the precursor medium. Black-Right-Pointing-Pointer They show enhanced photocatalytic activities with irradiation of UV light.

Guo, Jinxue; Zhou, Xiaoyu; Lu, Yibin [Qingdao University of Science and Technology, College of Chemistry and Molecular Engineering, No.53, Zhengzhou Road, People's Republic of China, Qingdao, Shandong 266042 (China)] [Qingdao University of Science and Technology, College of Chemistry and Molecular Engineering, No.53, Zhengzhou Road, People's Republic of China, Qingdao, Shandong 266042 (China); Zhang, Xiao, E-mail: zhx1213@126.com [Qingdao University of Science and Technology, College of Chemistry and Molecular Engineering, No.53, Zhengzhou Road, People's Republic of China, Qingdao, Shandong 266042 (China)] [Qingdao University of Science and Technology, College of Chemistry and Molecular Engineering, No.53, Zhengzhou Road, People's Republic of China, Qingdao, Shandong 266042 (China); Kuang, Shaoping; Hou, Wanguo [Qingdao University of Science and Technology, College of Chemistry and Molecular Engineering, No.53, Zhengzhou Road, People's Republic of China, Qingdao, Shandong 266042 (China)] [Qingdao University of Science and Technology, College of Chemistry and Molecular Engineering, No.53, Zhengzhou Road, People's Republic of China, Qingdao, Shandong 266042 (China)

2012-12-15T23:59:59.000Z

267

Recovery of solid fuel from municipal solid waste by hydrothermal treatment using subcritical water  

SciTech Connect

Highlights: Black-Right-Pointing-Pointer Hydrothermal treatment using subcritical water was studied to recover solid fuel from MSW. Black-Right-Pointing-Pointer More than 75% of carbon in MSW was recovered as char. Black-Right-Pointing-Pointer Heating value of char was comparable to that of brown coal and lignite. Black-Right-Pointing-Pointer Polyvinyl chloride was decomposed at 295 Degree-Sign C and 8 MPa and was removed by washing. - Abstract: Hydrothermal treatments using subcritical water (HTSW) such as that at 234 Degree-Sign C and 3 MPa (LT condition) and 295 Degree-Sign C and 8 MPa (HT condition) were investigated to recover solid fuel from municipal solid waste (MSW). Printing paper, dog food (DF), wooden chopsticks, and mixed plastic film and sheets of polyethylene, polypropylene, and polystyrene were prepared as model MSW components, in which polyvinylchloride (PVC) powder and sodium chloride were used to simulate Cl sources. While more than 75% of carbon in paper, DF, and wood was recovered as char under both LT and HT conditions, plastics did not degrade under either LT or HT conditions. The heating value (HV) of obtained char was 13,886-27,544 kJ/kg and was comparable to that of brown coal and lignite. Higher formation of fixed carbon and greater oxygen dissociation during HTSW were thought to improve the HV of char. Cl atoms added as PVC powder and sodium chloride to raw material remained in char after HTSW. However, most Cl originating from PVC was found to converse into soluble Cl compounds during HTSW under the HT condition and could be removed by washing. From these results, the merit of HTSW as a method of recovering solid fuel from MSW is considered to produce char with minimal carbon loss without a drying process prior to HTSW. In addition, Cl originating from PVC decomposes into soluble Cl compound under the HT condition. The combination of HTSW under the HT condition and char washing might improve the quality of char as alternative fuel.

Hwang, In-Hee, E-mail: hwang@eng.hokudai.ac.jp [Laboratory of Solid Waste Disposal Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060 8628 (Japan); Aoyama, Hiroya; Matsuto, Toshihiko; Nakagishi, Tatsuhiro; Matsuo, Takayuki [Laboratory of Solid Waste Disposal Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060 8628 (Japan)

2012-03-15T23:59:59.000Z

268

Shallow hydrothermal regime of the East Brawley and Glamis known geothermal resource areas, Salton Trough, California  

DOE Green Energy (OSTI)

Thermal gradients and thermal conductivities were obtained in real time using an in situ heat-flow technique in 15 shallow (90 to 150 m) wells drilled between Brawley and Glamis in the Imperial Valley, Southern California. The in situ measurements were supplemented by follow-up conventional temperature logs in seven of the wells and by laboratory measurements of thermal conductivity on drill cuttings. The deltaic sedimentary material comprising the upper approx. 100 m of the Salton Trough generally is poorly sorted and high in quartz resulting in quite high thermal conductivities (averaging 2.0 Wm/sup -1/ K/sup -1/ as opposed to 1.2 to 1.7 for typical alluvium). A broad heat-flow anomaly with maximum of about 200 mWm/sup -2/ (approx. 5 HFU) is centered between Glamis and East Brawley and is superimposed on a regional heat-flow high in excess of 100 mWm/sup -2/ (> 2.5 HFU). The heat-flow high corresponds with a gravity maximum and partially with a minimum in electrical resistivity, suggesting the presence of a hydrothermal system at depth in this area.

Mase, C.W.; Sass, J.H.; Brook, C.A.; Munroe, R.J.

1981-01-01T23:59:59.000Z

269

Hydrothermal preparation, characterization and property research of flowerlike ZnO nanocrystals built up by nanoflakes  

Science Conference Proceedings (OSTI)

In the present paper, flowerlike ZnO nanocrystals were successfully synthesized via a simple hydrothermal route in the presence of sodium dodecyl sulfate (SDS), employing Zn(CH{sub 3}COO){sub 2} and KOH as the starting reactants. The phase and morphology of the product were characterized by means of powder X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and select area electron diffraction (SAED). The optical properties of the product were studied. Some factors influencing the morphology of the final product including reaction time, temperature and amounts of the surfactant were discussed. Researches showed that the flowerlike ZnO nanocrystals had a good photo-catalytic activity for degradation of safranine T under 254 nm UV light irradiation. The electrochemical research of the product showed that flowerlike ZnO nanocrystals could promote electron transfers between catechol and the Au electrode. A possible formation mechanism was also suggested based on the results of the experiments.

Ni Yonghong [College of Chemistry and Materials Science, Anhui Key Laboratory of Functional Molecular Solids, Anhui Normal University, Wuhu 241000 (China)], E-mail: niyh@mail.ahnu.edu.cn; Wu Guogen; Zhang Xiaolei; Cao Xiaofeng; Hu Guangzhi; Tao Ali; Yang Zhousheng; Wei Xianwen [College of Chemistry and Materials Science, Anhui Key Laboratory of Functional Molecular Solids, Anhui Normal University, Wuhu 241000 (China)

2008-11-03T23:59:59.000Z

270

Power management in a hydro-thermal system under uncertainty by Lagrangian relaxation  

E-Print Network (OSTI)

We present a dynamic multistage stochastic programming model for the cost-optimal generation of electric power in a hydro-thermal system under uncertainty in load, inflow to reservoirs and prices for fuel and delivery contracts. The stochastic load process is approximated by a scenario tree obtained by adapting a SARIMA model to historical data, using empirical means and variances of simulated scenarios to construct an initial tree, and reducing it by a scenario deletion procedure based on a suitable probability distance. Our model involves many mixed-integer variables and individual power unit constraints, but relatively few coupling constraints. Hence we employstochastic Lagrangian relaxation that assigns stochastic multipliers to the coupling constraints. Solving the Lagrangian dual by a proximal bundle method leads to successive decomposition into single thermal and hydro unit subproblems that are solved by dynamic programming and a specialized descent algorithm, respectively. The optimal stochastic multipliers are used in Lagrangian heuristics to construct approximately optimal first stage decisions. Numerical results are presented for realistic data from a German power utility, with a time horizon of one week and scenario numbers ranging from 5 to 100. The corresponding optimization problems have up to 200,000 binary and 350,000 continuous variables, and more than 500,000 constraints.

Nicole Grwe-Kuska; Krzysztof C. Kiwiel; Matthias P. Nowak; Werner Rmisch; Isabel Wegner

2002-01-01T23:59:59.000Z

271

Internal Technical Report, Hydrothermal Injection Program - East Mesa 1983-84 Test Data  

DOE Green Energy (OSTI)

This report presents a test data index and a data plots for a series of 12 drawdown and tracer injection-withdrawal tests in porous-media aquifers at the East Mesa Geothermal Field located in the Imperial Valley near El Centro, California. Test and instrumentation summaries are also provided. The first 10 of these tests were completed during July and August 1983. The remaining 2 tests were completed in February 1984, after a 6-month quiescent period, in which tracers were left in the reservoir. The test wells used were 56-30 and 56-19, with 38-30 supplying water for the injection phase and 52-29 used as a disposal well during the backflowing of the test wells. Six other wells in the surrounding area were measured periodically for possible hydrologic effects during testing. It is not the intent of this report to supply analyzed data, but to list the uninterpreted computer stored data available for analysis. The data have been examined only to the extent to ensure that they are reasonable and internally consistent. This data is stored on permanent files at the Idaho National Engineering Laboratory (INEL) Cyber Computer Complex. The main processors for this complex are located at the Computer Science Center (CSC) in Idaho Falls, Idaho. The Hydrothermal Injection Test program, funded by the Department of Energy, was a joint effort between EG and G Idaho, Inc., the University of Utah Research Institute (UURI) and Republic Geothermal, Inc. (RGI) of Santa Fe Springs, California.

Freiburger, R.M.

1984-09-01T23:59:59.000Z

272

Low temperature hydrothermal processing of organic contaminants in Hanford tank waste  

DOE Green Energy (OSTI)

Batch and continuous flow reactor tests at Pacific Northwest Laboratory (PNL) have shown that organics similar to those present in the single-shell and double-shell underground storage tanks at Hanford can be decomposed in the liquid phase at relatively mild temperatures of 150[degree]C to 350[degree]C in an aqueous process known as hydrothermal processing (HTP). The organics will react with the abundant oxidants such s nitrite already present in the Hanford tank waste to form hydrogen, carbon dioxide, methane, and ammonia. No air or oxygen needs to be added to the system. Ferrocyanides and free cyanide will hydrolyze at similar temperatures to produce formate and ammonia and may also react with nitrates or other oxides. During testing, the organic carbon was transformed first to oxalate at[approximately]310[degree]C and completely oxidized to carbonate at [approximately]350[degree]C accompanied by hydroxide consumption. Solids were formed at higher temperatures, causing a small-diameter outlet tube to plug. The propensity for plugging was reduced by diluting the feed with concentrated hydroxide.

Jones, E.O.; Pederson, L.R.; Freeman, H.D.; Schmidt, A.J. (Pacific Northwest Lab., Richland, WA (United States)); Babad, H. (Westinghouse Hanford Co., Richland, WA (United States))

1993-02-01T23:59:59.000Z

273

Improved computational schemes for the numerical modeling of hydrothermal resources in Wyoming  

DOE Green Energy (OSTI)

A new method, the Conjugate Gradient Squared (CGS) solution technique, is shown to be extremely effective when applied to the finite-difference solution of conductive and convective heat transfer in geologic systems. The CGS method is compared to the Successive Over/Under Relaxation schemes, a version of the Gaussian elimination method, and the Generalized Minimum Residual (GMRES) approach. The CGS procedure converges at least ten times faster than the nearest competitor. The model is applied to the Thermopolis hydrothermal system, located in northwestern Wyoming. Modeled results are compared with measured temperature-depth profiles and results from other studies. The temperature decrease from 72{degree}C to 54{degrees}C along the crest of the Thermopolis anticline is shown to result from cooling of the geothermal fluid as it moves to the southeast. Modeled results show correct general trends, however, a time-varying three-dimensional model will be needed to fully explain the effects of mixing within the aquifers along the crest of the anticline and thermal affects of surface surface topography. 29 refs., 18 figs., 2 tabs.

Heasler, H.P.; George, J.H.; Allen, M.B.

1990-05-01T23:59:59.000Z

274

Low temperature hydrothermal processing of organic contaminants in Hanford tank waste  

DOE Green Energy (OSTI)

Batch and continuous flow reactor tests at Pacific Northwest Laboratory (PNL) have shown that organics similar to those present in the single-shell and double-shell underground storage tanks at Hanford can be decomposed in the liquid phase at relatively mild temperatures of 150{degree}C to 350{degree}C in an aqueous process known as hydrothermal processing (HTP). The organics will react with the abundant oxidants such s nitrite already present in the Hanford tank waste to form hydrogen, carbon dioxide, methane, and ammonia. No air or oxygen needs to be added to the system. Ferrocyanides and free cyanide will hydrolyze at similar temperatures to produce formate and ammonia and may also react with nitrates or other oxides. During testing, the organic carbon was transformed first to oxalate at{approximately}310{degree}C and completely oxidized to carbonate at {approximately}350{degree}C accompanied by hydroxide consumption. Solids were formed at higher temperatures, causing a small-diameter outlet tube to plug. The propensity for plugging was reduced by diluting the feed with concentrated hydroxide.

Jones, E.O.; Pederson, L.R.; Freeman, H.D.; Schmidt, A.J. [Pacific Northwest Lab., Richland, WA (United States); Babad, H. [Westinghouse Hanford Co., Richland, WA (United States)

1993-02-01T23:59:59.000Z

275

Geothermal project summaries. Geothermal energy research, development and demonstration program  

DOE Green Energy (OSTI)

Summaries of all Division of Geothermal Energy supported projects for which contracts have been executed are compiled. Each summary includes pertinent statistical data for that project and an abstract summarizing the project plans and accomplishments. The projects summarized fall into six categories: engineering research and development, resource exploration and assessment, hydrothermal technology applications, advanced technology applications, utilization experiments, and environmental control and institutional studies. (MHR)

Not Available

1976-09-01T23:59:59.000Z

276

Transportability Class of Americium in K Basin Sludge under Ambient and Hydrothermal Processing Conditions  

SciTech Connect

This report establishes the technical bases for using a ''slow uptake'' instead of a ''moderate uptake'' transportability class for americium-241 (241Am) for the K Basin Sludge Treatment Project (STP) dose consequence analysis. Slow uptake classes are used for most uranium and plutonium oxides. A moderate uptake class has been used in prior STP analyses for 241Am based on the properties of separated 241Am and its associated oxide. However, when 241Am exists as an ingrown progeny (and as a small mass fraction) within plutonium mixtures, it is appropriate to assign transportability factors of the predominant plutonium mixtures (typically slow) to the Am241. It is argued that the transportability factor for 241Am in sludge likewise should be slow because it exists as a small mass fraction as the ingrown progeny within the uranium oxide in sludge. In this report, the transportability class assignment for 241Am is underpinned with radiochemical characterization data on K Basin sludge and with studies conducted with other irradiated fuel exposed to elevated temperatures and conditions similar to the STP. Key findings and conclusions from evaluation of the characterization data and published literature are summarized here. Plutonium and 241Am make up very small fractions of the uranium within the K Basin sludge matrix. Plutonium is present at about 1 atom per 500 atoms of uranium and 241Am at about 1 atom per 19000 of uranium. Plutonium and americium are found to remain with uranium in the solid phase in all of the {approx}60 samples taken and analyzed from various sources of K Basin sludge. The uranium-specific concentrations of plutonium and americium also remain approximately constant over a uranium concentration range (in the dry sludge solids) from 0.2 to 94 wt%, a factor of {approx}460. This invariability demonstrates that 241Am does not partition from the uranium or plutonium fraction for any characterized sludge matrix. Most of the K Basin sludge characterization data is derived spent nuclear fuel corroded within the K Basins at 10-15?C. The STP process will place water-laden sludges from the K Basin in process vessels at {approx}150-180 C. Therefore, published studies with other irradiated (uranium oxide) fuel were examined. From these studies, the affinity of plutonium and americium for uranium in irradiated UO2 also was demonstrated at hydrothermal conditions (150 C anoxic liquid water) approaching those proposed for the STP process and even for hydrothermal conditions outside of the STP operating envelope (e.g., 150 C oxic and 100 C oxic and anoxic liquid water). In summary, by demonstrating that the chemical and physical behavior of 241Am in the sludge matrix is similar to that of the predominant species (uranium and for the plutonium from which it originates), a technical basis is provided for using the slow uptake transportability factor for 241Am that is currently used for plutonium and uranium oxides. The change from moderate to slow uptake for 241Am could reduce the overall analyzed dose consequences for the STP by more than 30%.

Delegard, Calvin H.; Schmitt, Bruce E.; Schmidt, Andrew J.

2006-08-01T23:59:59.000Z

277

Transportability Class of Americium in K Basin Sludge under Ambient and Hydrothermal Processing Conditions  

SciTech Connect

This report establishes the technical bases for using a ''slow uptake'' instead of a ''moderate uptake'' transportability class for americium-241 (241Am) for the K Basin Sludge Treatment Project (STP) dose consequence analysis. Slow uptake classes are used for most uranium and plutonium oxides. A moderate uptake class has been used in prior STP analyses for 241Am based on the properties of separated 241Am and its associated oxide. However, when 241Am exists as an ingrown progeny (and as a small mass fraction) within plutonium mixtures, it is appropriate to assign transportability factors of the predominant plutonium mixtures (typically slow) to the Am241. It is argued that the transportability factor for 241Am in sludge likewise should be slow because it exists as a small mass fraction as the ingrown progeny within the uranium oxide in sludge. In this report, the transportability class assignment for 241Am is underpinned with radiochemical characterization data on K Basin sludge and with studies conducted with other irradiated fuel exposed to elevated temperatures and conditions similar to the STP. Key findings and conclusions from evaluation of the characterization data and published literature are summarized here. Plutonium and 241Am make up very small fractions of the uranium within the K Basin sludge matrix. Plutonium is present at about 1 atom per 500 atoms of uranium and 241Am at about 1 atom per 19000 of uranium. Plutonium and americium are found to remain with uranium in the solid phase in all of the {approx}60 samples taken and analyzed from various sources of K Basin sludge. The uranium-specific concentrations of plutonium and americium also remain approximately constant over a uranium concentration range (in the dry sludge solids) from 0.2 to 94 wt%, a factor of {approx}460. This invariability demonstrates that 241Am does not partition from the uranium or plutonium fraction for any characterized sludge matrix. Most of the K Basin sludge characterization data is derived spent nuclear fuel corroded within the K Basins at 10-15?C. The STP process will place water-laden sludges from the K Basin in process vessels at {approx}150-180 C. Therefore, published studies with other irradiated (uranium oxide) fuel were examined. From these studies, the affinity of plutonium and americium for uranium in irradiated UO2 also was demonstrated at hydrothermal conditions (150 C anoxic liquid water) approaching those proposed for the STP process and even for hydrothermal conditions outside of the STP operating envelope (e.g., 150 C oxic and 100 C oxic and anoxic liquid water). In summary, by demonstrating that the chemical and physical behavior of 241Am in the sludge matrix is similar to that of the predominant species (uranium and for the plutonium from which it originates), a technical basis is provided for using the slow uptake transportability factor for 241Am that is currently used for plutonium and uranium oxides. The change from moderate to slow uptake for 241Am could reduce the overall analyzed dose consequences for the STP by more than 30%.

Delegard, Calvin H.; Schmitt, Bruce E.; Schmidt, Andrew J.

2006-08-01T23:59:59.000Z

278

Major transitions in evolution linked to thermal gradients above hydrothermal vents  

E-Print Network (OSTI)

The emergence of the main divisions of today's life: (1) unicellular prokaryotes, (2) unicellular eukaryotes, (3) multicellular eukaryotes, and (4) metazoans, are examples of the--still unexplained--major transitions in evolution. Regarding the origin of life, I have proposed that primordial life functioned as heat engine (thermosynthesis) while thermally cycled in convecting volcanic hot springs. Here I argue for a role of thermal gradients above submarine hydrothermal vents (SHV) in several major transitions. The last decade has witnessed the emergence of phononics, a novel discipline in physics based on controlled heat transport in thermal gradients. It builds thermal analogs to electronic devices: the thermal diode, the thermal transistor, the thermal switch, the thermal amplifier, the thermal memory--the thermal computer has been proposed. Encouraged by (1) the many similarities between microtubules (MT) and carbon nanotubes, which have a very high thermal conductivity, and (2) the recent discovery of a silk protein which also has a very high thermal conductivity, I combine and extend the mentioned ideas, and propose the general conjecture that several major transitions of evolution were effected by thermal processes, with four additional partial conjectures: (1) The first organisms used heat engines during thermosynthesis in convection cells; (2) The first eukaryotic cells used MT during thermosynthesis in the thermal gradient above SHV; (3) The first metazoans used transport of water or in water during thermosynthesis above SHV under an ice-covered ocean during the Gaskiers Snowball Earth; and (4) The first mammalian brain used a thermal machinery based on thermal gradients in or across the cortex. When experimentally proven these conjectures, which are testable by the methods of synthetic biology, would significantly enhance our understanding of life.

Anthonie W. J. Muller

2012-12-03T23:59:59.000Z

279

HYDRA-II: A hydrothermal analysis computer code: Volume 3, Verification/validation assessments  

Science Conference Proceedings (OSTI)

HYDRA-II is a hydrothermal computer code capable of three-dimensional analysis of coupled conduction, convection, and thermal radiation problems. This code is especially appropriate for simulating the steady-state performance of spent fuel storage systems. The code has been evaluated for this application for the US Department of Energy's Commercial Spent Fuel Management Program. HYDRA-II provides a finite difference solution in cartesian coordinates to the equations governing the conservation of mass, momentum, and energy. A cylindrical coordinate system may also be used to enclose the cartesian coordinate system. This exterior coordinate system is useful for modeling cylindrical cask bodies. The difference equations for conservation of momentum are enhanced by the incorporation of directional porosities and permeabilities that aid in modeling solid structures whose dimensions may be smaller than the computational mesh. The equation for conservation of energy permits modeling of orthotropic physical properties and film resistances. Several automated procedures are available to model radiation transfer within enclosures and from fuel rod to fuel rod. The documentation of HYDRA-II is presented in three separate volumes. Volume I - Equations and Numerics describes the basic differential equations, illustrates how the difference equations are formulated, and gives the solution procedures employed. Volume II - User's Manual contains code flow charts, discusses the code structure, provides detailed instructions for preparing an input file, and illustrates the operation of the code by means of a model problem. This volume, Volume III - Verification/Validation Assessments, provides a comparison between the analytical solution and the numerical simulation for problems with a known solution. This volume also documents comparisons between the results of simulations of single- and multiassembly storage systems and actual experimental data. 11 refs., 55 figs., 13 tabs.

McCann, R.A.; Lowery, P.S.

1987-10-01T23:59:59.000Z

280

Geochemistry and hydrothermal alteration at selected Utah hot springs. Final report: Volume 3 (revised)  

DOE Green Energy (OSTI)

Application of Na-K-Ca geothermometry to warm springs in Utah indicates several areas with sufficiently high apparent temperatures to be of interest as geothermal exploration targets. A zone of warm springs in the Bonneville Basin show Na-K-Ca temperatures from 150/sup 0/C to 233/sup 0/C. Examination of Great Salt Lake, Bonneville sediment pore water, and Jordan Valley well-water chemistry indicates that mixing a small percent of these fluids with warm spring water can cause substantial errors in Na-K-Ca temperature estimates. Other saline deposits which may influence Na-K-Ca temperature estimates are the Paradox formation in southeastern Utah, the Muddy Creek formation in southwestern Utah, the Arapien shale in central Utah, the Preuss formation in northeastern Utah, and Playa salts in much of western Utah. The Roosevelt KGRA is the most attractive target identified by Na-K-Ca geothermometry. Hydrothermal alteration, heavy metal distribution, and water chemistry provide additional characterization of the Roosevelt system. Chemistry of a cool water seep (25/sup 0/C) shows Na-K-Ca temperature of 241/sup 0/C and SiO/sub 2/ temperature of 125/sup 0/C. A Phillips well flowing from below 1500' (457m) shows Na-K-Ca temperature of 262/sup 0/C, SiO/sub 2/ temperature of 262/sup 0/C, and K of 1.5 times the surface spring value. The near surface alteration assemblage is best explained in terms of a decrease in pH of near surface fluids as sulfide oxidizes. Increasing potassium and pH with depth indicates that a K-feldspar stable zone may be intersected with deeper drilling. Geology and alteration were mapped in the Monroe KGRA. (JGB)

Parry, W.T.; Benson, N.L.; Miller, C.D.

1976-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

HYDRA-II: A hydrothermal analysis computer code: Volume 1, Equations and numerics  

Science Conference Proceedings (OSTI)

HYDRA-II is a hydrothermal computer code capable of three-dimensional analysis of coupled conduction, convection, and thermal radiation problems. This code is especially appropriate for simulating the steady-state performance of spent fuel storage systems. The code has been evaluated for this application for the US Department of Energy's Commercial Spent Fuel Management Program. HYDRA-II provides a finite difference solution in Cartesian coordinates to the equations governing the conservation of mass, momentum, and energy. A cylindrical coordinate system may also be used to enclose the Cartesian coordinate system. This exterior coordinate system is useful for modeling cylindrical cask bodies. The difference equations for conservation of momentum are enhanced by the incorporation of directional porosities and permeabilities that aid in modeling solid structures whose dimensions may be smaller than the computational mesh. The equation for conservation of energy permits of modeling of orthotropic physical properties and film resistances. Several automated procedures are available to model radiation transfer within enclosures and from fuel rod to fuel rod. The documentation of HYDRA-II is presented in three separate volumes. This volume, Volume I - Equations and Numerics, describes the basic differential equations, illustrates how the difference equations are formulated, and gives the solution procedures employed. Volume II - User's Manual contains code flow charts, discusses the code structure, provides detailed instructions for preparing an input file, and illustrates the operation of the code by means of a model problem. The final volume, Volume III - Verification/Validation Assessments, presents results of numerical simulations of single- and multiassembly storage systems and comparisons with experimental data. 4 refs.

McCann, R.A.

1987-04-01T23:59:59.000Z

282

Carbon dioxide-assisted fabrication of highly uniform submicron-sized colloidal carbon spheres via hydrothermal carbonization using soft drink  

SciTech Connect

An eco-friendly and economical method for the formation of uniform-sized carbon spheres by hydrothermal dehydration/condensation of a commercial carbonated beverage at 200 oC is reported. CO2 dissolved in the beverage accelerates the dehydration kinetics of the dissolved sugar molecules leading to production of homogeneous carbon spheres having a diameter less than 850 nm. In the presence of CO2, the rough surface of these carbon spheres likely results from continuous Ostwald ripening of constituent microscopic carbon-containing spheres that are formed by subsequent polymerization of intermediate HMF molecules.

Moon, Gun-Hee; Shin, Yongsoon; Arey, Bruce W.; Wang, Chong M.; Exarhos, Gregory J.; Choi, Wonyong; Liu, Jun

2012-10-01T23:59:59.000Z

283

TEMPEST: A three-dimensional time-dependent computer program for hydrothermal analysis: Volume 1, Numerical methods and input instructions  

SciTech Connect

This document describes the numerical methods, current capabilities, and the use of the TEMPEST (Version L, MOD 2) computer program. TEMPEST is a transient, three-dimensional, hydrothermal computer program that is designed to analyze a broad range of coupled fluid dynamic and heat transfer systems of particular interest to the Fast Breeder Reactor thermal-hydraulic design community. The full three-dimensional, time-dependent equations of motion, continuity, and heat transport are solved for either laminar or turbulent fluid flow, including heat diffusion and generation in both solid and liquid materials. 10 refs., 22 figs., 2 tabs.

Trent, D.S.; Eyler, L.L.; Budden, M.J.

1983-09-01T23:59:59.000Z

284

Environmental impacts during geothermal development: Some examples from Central America  

DOE Green Energy (OSTI)

The impacts of geothermal development projects are usually positive. However, without appropriate monitoring plans and mitigation actions firmly incorporated into the project planning process, there exists the potential for significant negative environmental impacts. The authors present five examples from Central America of environmental impacts associated with geothermal development activities. These brief case studies describe landslide hazards, waste brine disposal, hydrothermal explosions, and air quality issues. Improved Environmental Impact Assessments are needed to assist the developing nations of the region to judiciously address the environmental consequences associated with geothermal development.

Goff, S.; Goff, F.

1997-04-01T23:59:59.000Z

285

Study of Antisite Defects in Hydrothermally Prepared LiFePO4 by in Situ X-ray Diffraction  

Science Conference Proceedings (OSTI)

Hydrothermal synthesis has proven to be a cost-effective, energy-efficient approach for the manufacture of lithium iron phosphate (LiFePO{sub 4}) and its related materials. However, hydrothermally prepared LiFePO{sub 4} typically suffers from antisite defects, where some of the iron resides on lithium sites and restricts lithium-ion mobility. A post-heat-treatment temperature of around 700 C is generally used to eliminate cation disorder, but little is known about these antisite defects or their concentration as a function of the post-heat-treatment temperature. In this study, time-resolved, synchrotron X-ray diffraction reveals that antisite defects are completely eliminated above 500 C, suggesting that the electrochemical performance may be significantly enhanced by a milder postsynthesis heat treatment. The preliminary electrochemical results show a significant enhancement in the electrochemical capacity with the defect-free material, with the specific capacity increasing by approximately 60% at a C/20 rate.

J Chen; J Graetz

2011-12-31T23:59:59.000Z

286

Electronic structure and magnetic properties of FeWO{sub 4} nanocrystals synthesized by the microwave-hydrothermal method  

Science Conference Proceedings (OSTI)

This communication reports that FeWO{sub 4} nanocrystals were successfully synthesized by the microwave-hydrothermal method at 443 K for 1 h. The structure and shape of these nanocrystals were characterized by X-ray diffraction, Rietveld refinement, and transmission electron microscopy. The experimental results and first principles calculations were combined to explain the electronic structure and magnetic properties. Experimental data were obtained by magnetization measurements for different applied magnetic fields. Theoretical calculations revealed that magnetic properties of FeWO{sub 4} nanocrystals can be assigned to two magnetic orderings with parallel or antiparallel spins in adjacent chains. These factors are crucial to understanding of competition between ferro- and antiferromagnetic behavior. Highlights: Black-Right-Pointing-Pointer Monophasic FeWO{sub 4} nanocrystals were synthesized by the microwave-hydrothermal method. Black-Right-Pointing-Pointer Rietveld refinement and clusters model for monoclinic structure Black-Right-Pointing-Pointer Magnetic properties of FeWO{sub 4} nanocrystals at different temperatures.

Almeida, M.A.P. [INCTMN-DQ-Universidade Federal de Sao Carlos, Sao Carlos, P.O. Box 676, 13565-905, SP (Brazil)] [INCTMN-DQ-Universidade Federal de Sao Carlos, Sao Carlos, P.O. Box 676, 13565-905, SP (Brazil); Cavalcante, L.S., E-mail: laeciosc@bol.com.br [INCTMN-Universidade Estadual, Paulista, P.O. Box 355, 14801-907, Araraquara, SP (Brazil); Morilla-Santos, C.; Filho, P.N. Lisboa [MAv-Universidade Estadual, Paulista, P.O. Box 473, 17033-360, Bauru, SP (Brazil)] [MAv-Universidade Estadual, Paulista, P.O. Box 473, 17033-360, Bauru, SP (Brazil); Beltran, A.; Andres, J.; Gracia, L. [Department de Quimica Fisica i Analitica, Universitat Jaume I, E-12071 Castello (Spain)] [Department de Quimica Fisica i Analitica, Universitat Jaume I, E-12071 Castello (Spain); Longo, E. [INCTMN-DQ-Universidade Federal de Sao Carlos, Sao Carlos, P.O. Box 676, 13565-905, SP (Brazil) [INCTMN-DQ-Universidade Federal de Sao Carlos, Sao Carlos, P.O. Box 676, 13565-905, SP (Brazil); INCTMN-Universidade Estadual, Paulista, P.O. Box 355, 14801-907, Araraquara, SP (Brazil)

2012-11-15T23:59:59.000Z

287

Microbial community structure of hydrothermal deposits from geochemically different vent fields along the Mid-Atlantic Ridge  

Science Conference Proceedings (OSTI)

To evaluate the effects of local fluid geochemistry on microbial communities associated with active hydrothermal vent deposits, we examined the archaeal and bacterial communities of 12 samples collected from two very different vent fields: the basalt-hosted Lucky Strike (37 17'N, 32 16.3'W, depth 1600-1750 m) and the ultramafic-hosted Rainbow (36 13'N, 33 54.1'W, depth 2270-2330 m) vent fields along the Mid-Atlantic Ridge (MAR). Using multiplexed barcoded pyrosequencing of the variable region 4 (V4) of the 16S rRNA genes, we show statistically significant differences between the archaeal and bacterial communities associated with the different vent fields. Quantitative polymerase chain reaction (qPCR) assays of the functional gene diagnostic for methanogenesis (mcrA), as well as geochemical modelling to predict pore fluid chemistries within the deposits, support the pyrosequencing observations. Collectively, these results show that the less reduced, hydrogen-poor fluids at Lucky Strike limit colonization by strict anaerobes such as methanogens, and allow for hyperthermophilic microaerophiles, like Aeropyrum. In contrast, the hydrogen-rich reducing vent fluids at the ultramafic-influenced Rainbow vent field support the prevalence of methanogens and other hydrogen-oxidizing thermophiles at this site. These results demonstrate that biogeographical patterns of hydrothermal vent microorganisms are shaped in part by large scale geological and geochemical processes.

Flores, Gilberto E [Portland State University; Campbell, James H [ORNL; Kirshtein, Julie D [United States Geological Survey, Reston, VA; Meneghin, Jennifer [Portland State University; Podar, Mircea [ORNL; Steinberg, Joshua [Oregon Episcopal School, Portland, OR; Seewald, Jeffrey S [Woods Hole Oceanographic Institution (WHOI), Woods Hole, MA; Tivey, Margaret Kingston [Woods Hole Oceanographic Institution (WHOI), Woods Hole, MA; Voytek, Mary A [United States Geological Survey & National Aeronautics and Space Administration; Reysenbach, Anna-Louise [Portland State University; Yang, Zamin Koo [ORNL

2011-01-01T23:59:59.000Z

288

Hydrothermal synthesis of new rare earth silicate fluorides: A novel class of polar materials  

Science Conference Proceedings (OSTI)

Polar crystals provide an interesting avenue for materials research both in the structures they form and the properties they possess. This work describes the hydrothermal synthesis and structural characterization of three novel silicate fluorides. Compound (1), LiY{sub 3}(SiO{sub 4}){sub 2}F{sub 2} crystallizes in space group C2/c, with a=17.651(4) A, b=4.8868(10) A, c=11.625(2) A and {beta}=131.13(3) Degree-Sign . BaY{sub 2}(Si{sub 2}O{sub 7})F{sub 2} (2) crystallizes in space group P-1, with a=5.1576(10) A, b=6.8389(14) A, c=11.786(2) A, {alpha}=93.02(3) Degree-Sign , {beta}=102.05(3) Degree-Sign and {gamma}=111.55(3) Degree-Sign . Finally, the structure of Ba{sub 2}Y{sub 3}(SiO{sub 4}){sub 2}F{sub 5} (3) was determined in the polar orthorhombic space group Pba2, having unit cell parameters a=8.8864(18) A, b=12.764(3) A and c=5.0843(10) A. The structures are compared based on their building blocks and long range polarities. Aligned silicate tetrahedra segregated into a single layer in (3) impart the observed polarity. - Graphical abstract: The polar structure of Ba{sub 2}Y{sub 3}(SiO{sub 4}){sub 2}F{sub 5}. Highlights: Black-Right-Pointing-Pointer Natural yttrium silicate fluoride minerals are briefly reviewed. Black-Right-Pointing-Pointer The synthesis and structures of LiY{sub 3}(SiO{sub 4}){sub 2}F{sub 2}, BaY{sub 2}(Si{sub 2}O{sub 7})F{sub 2} and Ba{sub 2}Y{sub 3}(SiO{sub 4}){sub 2}F{sub 5} are discussed. Black-Right-Pointing-Pointer Ba{sub 2}Y{sub 3}(SiO{sub 4}){sub 2}F{sub 5} crystallizes in the polar space group Pba2. Black-Right-Pointing-Pointer Polarity occurs primarily through aligned silicate tetrahedra in a segregated layer.

McMillen, Colin D., E-mail: cmcmill@clemson.edu [Department of Chemistry and Center for Optical Materials Science and Engineering Technologies (COMSET), Clemson University, 485 H.L. Hunter Laboratories, Clemson, SC 29634 (United States); Emirdag-Eanes, Mehtap, E-mail: mehtapemirdag@iyte.edu.tr [Department of Chemistry, Izmir Institute of Technology, Gulbahce koyu, Urla, Izmir 35430 (Turkey)] [Department of Chemistry, Izmir Institute of Technology, Gulbahce koyu, Urla, Izmir 35430 (Turkey); Stritzinger, Jared T., E-mail: jstritz@clemson.edu [Department of Chemistry and Center for Optical Materials Science and Engineering Technologies (COMSET), Clemson University, 485 H.L. Hunter Laboratories, Clemson, SC 29634 (United States); Kolis, Joseph W., E-mail: kjoseph@clemson.edu [Department of Chemistry and Center for Optical Materials Science and Engineering Technologies (COMSET), Clemson University, 485 H.L. Hunter Laboratories, Clemson, SC 29634 (United States)

2012-11-15T23:59:59.000Z

289

Development Of Genetic Occurrence Models For Geothermal Prospecting | Open  

Open Energy Info (EERE)

Development Of Genetic Occurrence Models For Geothermal Prospecting Development Of Genetic Occurrence Models For Geothermal Prospecting Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Development Of Genetic Occurrence Models For Geothermal Prospecting Details Activities (1) Areas (1) Regions (0) Abstract: Exploration strategies based on an understanding of the geologic processes that transfer heat from the mantle to the upper crust, and foster the conditions for shallow hydrothermal circulation or enhanced geothermal systems (EGS) exploration, are required to search efficiently for 'blind' geothermal resources. We propose a genetically based screening protocol to assess potentially prospective geothermal resources, beginning at the plate boundary scale and progressively focusing in on the scale of a producing

290

Study concerning the utilization of the ocean spreading center environment for the conversion of biomass to a liquid fuel. (Includes Appendix A: hydrothermal petroleum genesis). [Supercritical water  

SciTech Connect

This document contains a report on the feasibility of utilizing energy obtained from ocean spreading centers as process heat for the conversion of municipal solid wastes to liquid fuels. The appendix contains a paper describing hydrothermal petroleum genesis. Both have been indexed separately for inclusion in the Energy Data Base. (DMC)

Steverson, M.; Stormberg, G.

1985-01-01T23:59:59.000Z

291

Hydrothermal brecciation in the Jemez Fault zone, Valles Caldera, New Mexico: Results from CSDP (Continental Scientific Drilling Program) corehole VC-1  

DOE Green Energy (OSTI)

Paleozoic and Precambrian rocks intersected deep in Continental Scientific Drilling Program corehole VC-1, adjacent to the late Cenozoic Valles caldera complex, have been disrupted to form a spectacular breccia sequence. The breccias are of both tectonic and hydrothermal origin, and probably formed in the Jemez fault zone, a major regional structure with only normal displacement since mid-Miocene. Tectonic breccias are contorted, crushed, sheared, and granulated; slickensides are commmon. Hydrothermal breccias, by contrast, lack these frictional textures, but arej commonly characterized by fluidized matrix foliation and prominent clast rounding. Fluid inclusions in the hydrothermal breccias are dominantly two-phase, liquid-rich at room temperature, principally secondary, and form two distinctly different compositional groups. Older inclusions, unrelated to brecciation, are highly saline and homogenize to the liquid phase in the temperature range 189 to 246/sup 0/C. Younger inclusions, in part of interbreccia origin, are low-salinity and homogenize (also to liquid) in the range 230 to 283/sup 0/C. Vapor-rich inclusions locally trapped along with these dilute liquid-rich inclusions document periodic boiling. These fluid-inclusion data, together with alteration assemblages and textures as well as the local geologic history, have been combined to model hydrothermal brecciation at the VC-1 site.

Hulen, J.B.; Nielson, D.L.

1987-06-01T23:59:59.000Z

292

Correlation of wireline log characteristics with hydrothermal alteration and other reservoir properties of the Salton Sea and Westmorland geothermal fields, Imperial Valley, California, USA  

Science Conference Proceedings (OSTI)

A detailed study of wireline logs from 11 wells in the Salton Sea and Westmorland geothermal systems was undertaken in order to determine the effects of hydrothermal alteration on the response of electrical and gamma-gamma density well logs. For the Salton Sea geothermal field, definite correspondence between log responses and hydrothermal mineralogy is evident, which in turn is related to the physical properties of the rocks. Three hydrothermal and one unaltered zone can be identified from log data on shales. These are: (1) the unaltered montmorillonite zone (290/sup 0/ to 300/sup 0/C). The characteristic responses on well logs by which these zones are identified result primarily from changes in clay mineralogy of the shales and increases in density with progressive hydrothermal metamorphism. In the Westmorland geothermal field, differentiating mineral zones from log responses was only partially successful. However, analyses of both well log and petrologic data for wells Landers 1 and Kalin Farms 1 suggest that the former is heating up and the latter is cooling.

Muramoto, F.S.; Elders, W.A.

1984-05-01T23:59:59.000Z

293

Correlation of wireline log characteristics with hydrothermal alteration and other reservoir properties of the Salton Sea and Westmorland geothermal fields, Imperial Valley, California, USA  

DOE Green Energy (OSTI)

A detailed study of wireline logs from 11 wells in the Salton Sea and Westmorland geothermal systems was undertaken in order to determine the effects of hydrothermal alteration on the response of electrical and gamma-gamma density well logs. For the Salton Sea geothermal field, definite correspondence between log responses and hydrothermal mineralogy is evident, which in turn is related to the physical properties of the rocks. Three hydrothermal and one unaltered zone can be identified from log data on shales. These are: (1) the unaltered montmorillonite zone (<100/sup 0/ to 190/sup 0/C); (2) the illite zone (100/sup 0/ to 190/sup 0/C to 230/sup 0/ to 250/sup 0/C); (3) the chlorite zone (230/sup 0/ to 250/sup 0/C to 290/sup 0/ to 300/sup 0/C); and (4) the feldspar zone (>290/sup 0/ to 300/sup 0/C). The characteristic responses on well logs by which these zones are identified result primarily from changes in clay mineralogy of the shales and increases in density with progressive hydrothermal metamorphism. In the Westmorland geothermal field, differentiating mineral zones from log responses was only partially successful. However, analyses of both well log and petrologic data for wells Landers 1 and Kalin Farms 1 suggest that the former is heating up and the latter is cooling.

Muramoto, F.S.; Elders, W.A.

1984-05-01T23:59:59.000Z

294

Influence of activity of CaSO4 ? 2H2O on hydrothermal formation of CaSO4 ? 0.5H2O whiskers  

Science Conference Proceedings (OSTI)

Theinfluence of the activity of calciumsulfate dihydrate (CaSO4 ? 2H2O) on the hydrothermal formation of CaSO4 ?0.5H2O whiskers was investigated in this paper, using commercial CaSO4 ? ...

S. C. Hou, L. Xiang

2013-01-01T23:59:59.000Z

295

TEMPEST: A three-dimensional time-dependence computer program for hydrothermal analysis: Volume 1, Numerical methods and input instructions: Revision 2  

Science Conference Proceedings (OSTI)

TEMPEST offers simulation capabilities over a wide range of hydrothermal problems that are definable by input instructions. These capabilities are summarized by categories as follows: modeling capabilities; program control; and I/O control. 10 refs., 22 figs., 2 tabs. (LSP)

Trent, D.S.; Eyler, L.L.

1989-01-01T23:59:59.000Z

296

Hydrothermal synthesis and luminescent properties of NaLa(MoO{sub 4}){sub 2}:Dy{sup 3+} phosphor  

SciTech Connect

Pompon-like NaLa(MoO{sub 4}){sub 2}:Dy{sup 3+} phosphors have been successfully prepared via a hydrothermal method using ammonia as pH value regulator. The hydrothermal process was carried out under aqueous condition without the use of any organic solvent, surfactant, and catalyst. The experimental results demonstrate that the obtained NaLa(MoO{sub 4}){sub 2}:Dy{sup 3+} phosphor powders are single-phase scheelite structure with tetragonal symmetry. Moreover, the phosphor under the excitation of 390 and 456 nm exhibited blue emission (486 nm) and yellow emission (574 nm), corresponding to the {sup 4}F{sub 9/2}{yields}{sup 6}H{sub 15/2} transition and {sup 4}F{sub 9/2}{yields}{sup 6}H{sub 13/2} transition of Dy{sup 3+} ions, respectively. In addition, the yellow-to-blue emission intensity ratio (Y/B) can be changed with the doped concentration of Dy{sup 3+} ions. All chromaticity coordinates of the obtained NaLa(MoO{sub 4}){sub 2}:Dy{sup 3+} phosphors are located in the white-light region. The results indicate that this kind of phosphor may has potential applications in the fields of near UV-excited and blue-excited white LEDs. - Graphical abstract: It can be seen from the SEM images that a pompon-like shape was obtained with an average diameter of about 1 {mu}m, and it is composed of many nanoflakes. Highlights: Black-Right-Pointing-Pointer Pompon-like NaLa(MoO{sub 4}){sub 2}:Dy{sup 3+} phosphors have been successfully prepared via a hydrothermal method. Black-Right-Pointing-Pointer Blue emission at 486 nm and yellow emission at 574 nm were obtained from the samples. Black-Right-Pointing-Pointer The yellow-to-blue emission intensity ratio (Y/B) can be changed with the doped concentration of Dy{sup 3+} ions. Black-Right-Pointing-Pointer NaLa(MoO{sub 4}){sub 2}:Dy{sup 3+} can be efficiently excited by the blue light and the near ultraviolet light.

Li Linlin; Zi Wenwen; Li Guanghuan; Lan Shi; Ji Guijuan [College of Chemistry, Jilin University, Changchun 130026 (China); Gan Shucai, E-mail: gansc@jlu.edu.cn [College of Chemistry, Jilin University, Changchun 130026 (China); Zou Haifeng [College of Chemistry, Jilin University, Changchun 130026 (China); Xu Xuechun [College of Earth Sciences, Jilin University, Changchun 130026 (China)

2012-07-15T23:59:59.000Z

297

A national drilling program to study the roots of active hydrothermal systems related to young magmatic intrusions  

DOE Green Energy (OSTI)

The importance of studies of active hydrothermal-magma systems as part of a national continental scientific drilling program has been emphasized in numerous workshops and symposia. The present report, prepared by the Panel on Thermal Regimes of the Continental Scientific Drilling Committee, both reinforces and expands on earlier recommendations. The US Geodynamics Committee 1979 report of the Los Almos workshop, Continental Scientific Drilling Program, placed major emphasis on maximizing the scientific value of current and planned drilling by industry and government, supplementing these efforts with holes drilled solely for scientific purposes. Although the present report notes the importance of opportunities for scientific investigations that may be added on to current, mission-oriented drilling activities, the Panel on Thermal Regimes recognizes that such opportunities are limited and thus focused its study on holes dedicated to broad scientific objectives. 16 refs., 2 figs., 4 tabs.

Not Available

1984-01-01T23:59:59.000Z

298

An Optimization-Based Algorithm for Scheduling Hydrothermal Power Systems with Cascaded Reservoirs and Discrete Hydro Constraints  

E-Print Network (OSTI)

An optimization-based algorithm is presented for the short-term scheduling of hydrothermal power systems using the Lagrangian relaxation technique. This paper concentrates on the solution methodology for hydro subproblems with cascaded reservoirs and discrete hydro constraints. Continuous reservoir dynamics and constraints, discontinuous operating regions, discrete operating states, and hydraulic coupling of cascaded reservoirs are considered in an integrated fashion. The key idea is to substitute out the reservoir dynamics and to relax the reservoir level constraints by using another set of multipliers, making a hydro subproblem unit-wise and stage-wise decomposable. The optimal generation level for each operating state at each hour can be obtained simply by minimizing a single variable function. Dynamic programming is then applied to optimize the operating states across the planning horizon with a small number of well-structured transitions. A modified subgradient algorithm is used...

Xiaohong Guan; Ernan Ni; Renhou Li; Peter B. Luh

1997-01-01T23:59:59.000Z

299

Nano-crystalline powders and suspensions generated using a flow-through hydrothermal process, Part 1: Characterization  

SciTech Connect

A wide range of ultra-fine, nano-crystalline powders and suspensions have been produced using Rapid Thermal Decomposition of precursors in Solution (RTDS). These materials include single and multi-component iron-, 11 zirconium-, titanium-, nickel-, and chromium-oxide/oxyhydroxide powders. RTDS is a flow-through hydrothermal process capable of producing nano-crystalline particulate material at rates of up to 100 grams of solid per hour. We present the results of characterization efforts on RTDS iron oxyhydroxide and zirconium oxide systems. As-collected RTDS suspensions were characterized using optical light scattering. Separated RTDS powders were evaluated using X-ray diffraction, electron microscopy, gas adsorption analysis, thermal gravimetric analysis, and chemical analysis.

Darab, J.G.; Buehler, M.F.; Linehan, J.C.; Matson, D.W.

1994-04-01T23:59:59.000Z

300

Thermal conversion of municipal solid waste via hydrothermal carbonization: Comparison of carbonization products to products from current waste management techniques  

Science Conference Proceedings (OSTI)

Highlights: Black-Right-Pointing-Pointer Hydrothermal carbonization (HTC) is a novel thermal conversion process. Black-Right-Pointing-Pointer HTC converts wastes into value-added resources. Black-Right-Pointing-Pointer Carbonization integrates majority of carbon into solid-phase. Black-Right-Pointing-Pointer Carbonization results in a hydrochar with high energy density. Black-Right-Pointing-Pointer Using hydrochar as an energy source may be beneficial. - Abstract: Hydrothermal carbonization (HTC) is a novel thermal conversion process that may be a viable means for managing solid waste streams while minimizing greenhouse gas production and producing residual material with intrinsic value. HTC is a wet, relatively low temperature (180-350 Degree-Sign C) thermal conversion process that has been shown to convert biomass to a carbonaceous residue referred to as hydrochar. Results from batch experiments indicate HTC of representative waste materials is feasible, and results in the majority of carbon (45-75% of the initially present carbon) remaining within the hydrochar. Gas production during the batch experiments suggests that longer reaction periods may be desirable to maximize the production of energy-favorable products. If using the hydrochar for applications in which the carbon will remain stored, results suggest that the gaseous products from HTC result in fewer g CO{sub 2}-equivalent emissions than the gases associated with landfilling, composting, and incineration. When considering the use of hydrochar as a solid fuel, more energy can be derived from the hydrochar than from the gases resulting from waste degradation during landfilling and anaerobic digestion, and from incineration of food waste. Carbon emissions resulting from the use of the hydrochar as a fuel source are smaller than those associated with incineration, suggesting HTC may serve as an environmentally beneficial alternative to incineration. The type and extent of environmental benefits derived from HTC will be dependent on hydrochar use/the purpose for HTC (e.g., energy generation or carbon storage).

Lu Xiaowei; Jordan, Beth [Department of Civil and Environmental Engineering, University of South Carolina, 300 Main Street, Columbia, SC 29208 (United States); Berge, Nicole D., E-mail: berge@cec.sc.edu [Department of Civil and Environmental Engineering, University of South Carolina, 300 Main Street, Columbia, SC 29208 (United States)

2012-07-15T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Geothermal power development in Hawaii. Volume I. Review and analysis  

DOE Green Energy (OSTI)

The history of geothermal exploration in Hawaii is reviewed briefly. The nature and occurrences of geothermal resources are presented island by island. An overview of geothermal markets is presented. Other topies covered are: potential markets of the identified geothermal areas, well drilling technology, hydrothermal fluid transport, overland and submarine electrical transmission, community aspects of geothermal development, legal and policy issues associated with mineral and land ownership, logistics and infrastructure, legislation and permitting, land use controls, Regulation 8, Public Utilities Commission, political climate and environment, state plans, county plans, geothermal development risks, and business planning guidelines.

Not Available

1982-06-01T23:59:59.000Z

302

Synthesis of high intrinsic loss power aqueous ferrofluids of iron oxide nanoparticles by citric acid-assisted hydrothermal-reduction route  

Science Conference Proceedings (OSTI)

Monodispersed aqueous ferrofluids of iron oxide nanoparticle were synthesized by hydrothermal-reduction route. They were characterized by X-ray diffraction analysis, Fourier transform infrared spectroscopy, scanning and transmission electron microscopy and dynamic light scattering. The results showed that certain concentrations of citric acid (CA) are required to obtain only magnetic iron oxides with mean particle sizes around 8 nm. CA acts as a modulator and reducing agent in iron oxide formation which controls nanoparticle size. The XRD, magnetic and heating measurements showed that the temperature and time of hydrothermal reaction can affect the magnetic properties of obtained ferrofluids. The synthesized ferrofluids were stable at pH 7. Their mean hydrodynamic size was around 80 nm with polydispersity index (PDI) of 0.158. The calculated intrinsic loss power (ILP) was 9.4 nHm{sup 2}/kg. So this clean and cheap route is an efficient way to synthesize high ILP aqueous ferrofluids applicable in magnetic hyperthermia. - Graphical abstract: Monodispersed aqueous ferrofluids of iron oxide nanoparticles were synthesized by hydrothermal-reduction method with citric acid as reductant which is an efficient way to synthesize aqueous ferrofluids applicable in magnetic hyperthermia. Highlights: Black-Right-Pointing-Pointer Aqueous iron oxide ferrofluids were synthesized by hydrothermal-reduction route. Black-Right-Pointing-Pointer Citric acid acted as reducing agent and surfactant in the route. Black-Right-Pointing-Pointer This is a facile, low energy and environmental friendly route. Black-Right-Pointing-Pointer The aqueous iron oxide ferrofluids were monodispersed and stable at pH of 7. Black-Right-Pointing-Pointer The calculated intrinsic loss power of the synthesized ferrofluids was very high.

Behdadfar, Behshid, E-mail: bbehdadfar@ma.iut.ac.ir [Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111 (Iran, Islamic Republic of); Kermanpur, Ahmad [Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111 (Iran, Islamic Republic of); Sadeghi-Aliabadi, Hojjat [School of Pharmacy, Isfahan Pharmaceutical Research Center, Isfahan University of Medical Sciences, Isfahan (Iran, Islamic Republic of); Morales, Maria del Puerto [Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco 28049, Madrid (Spain); Mozaffari, Morteza [Department of Physics, Razi University, Kermanshah (Iran, Islamic Republic of)

2012-03-15T23:59:59.000Z

303

Environmental development plan: geothermal energy systems  

DOE Green Energy (OSTI)

To ensure that environmental, health, and safety (EH and S) considerations are addressed adequately in the technology decision making process, the Environmental Development Plan (EDP) identifies and evaluates EH and S concerns; defines EH and S research and related assessments to examine or resolve the concerns; provides a coordinated schedule with the technology program for required EH and S research and developement; and indicates the timing for Environmental Assessments, Environmental Impact Statements, Environmental Readiness Documents, and Safety Analysis Reports. This EDP for geothermal energy systems covers all current and planned activities of the DOE Geothermal Energy Systems. Hydrothermal convection systems, geopressured systems, and hot-dry-rock systems are covered. Environmental concerns and requirements for resolution of these concerns are discussed at length. (MHR)

Not Available

1979-08-01T23:59:59.000Z

304

Protection mechanisms of the iron-plated armor of a deep sea hydrothermal vent gastropod  

E-Print Network (OSTI)

Biological exoskeletons, in particular those with unusually robust and multifunctional properties, hold enormous potential for the development of improved load-bearing and protective engineering materials. Here, we report ...

Yao, Haimin

305

Face-selective electrostatic control of hydrothermal zinc oxide nanowire synthesis  

E-Print Network (OSTI)

Rational control over the morphology and the functional properties of inorganic nanostructures has been a long-standing goal in the development of bottom-up device fabrication processes. We report that the geometry of ...

Joo, Jaebum

306

Multi-purpose utilization of hydrothermal resources within the City of El Centro. Final report  

DOE Green Energy (OSTI)

The engineering and economic feasibility of utilizing geothermal heat from the Heber KGRA for space heating/cooling and water heating for domestic and industrial process applications within the City of El Centro was investigated. The analysis proceeds through an engineering survey of present conventional energy utilization within the City to identify and evaluate those end uses which could potentially utilize geothermal heat as a substitute for fossil fuel or electrically produced heating and cooling. A general engineering and economic evaluation of heat and cold delivery alternatives followed including evaluations of geothermal fluid transmission options, alternative refrigeration techniques, heat and cold transmission media options, probable systems interfaces, materials evaluations, projected conventional energy costs, life cycle costs for existing conventional systems, projected pricing requirements for privately and municipally developed geothermal resources, the relative distribution costs of heat delivery options, and estimated residential and commercial retrofit costs. A cost-effective plan for large-scale utilization of geothermal energy in El Centro for district heating/cooling and industrial applications was developed from this evaluation and preliminary conclusions drawn. Institutional barriers and environmental impacts associated with geothermal development in the City were also evaluated. Potentially adverse impacts were identified along with mitigating measures that should either completely eliminate or reduce these adverse effects to levels of insignificance.

Sherwood, P.B.; Province, S.G.; Yamasaki, R.N.; Newman, K.L.

1979-04-01T23:59:59.000Z

307

Fluid-inclusion gas composition from an active magmatic-hydrothermal system: a case study of The Geysers, California geothermal field  

DOE Green Energy (OSTI)

Hydrothermal alteration and the active vapor-dominated geothermal system at The Geysers, CA are related to a composite hypabyssal granitic pluton emplaced beneath the field 1.1 to 1.2 million years ago. Deep drill holes provide a complete transect across the thermal system and samples of the modem-day steam. The hydrothermal system was liquid-dominated prior to formation of the modem vapor-dominated regime at 0.25 to 0.28 Ma. Maximum temperatures and salinities ranged from 440 C and 44 wt. percent NaCl equivalent in the biotite hornfels adjacent to the pluton to 305 C and 5 wt. percent NaCl equivalent at distances of 1730 m from the intrusive contact. The major, minor, and noble gas compositions of fluid inclusions in the hydrothermally altered rocks were integrated with microthermometric and mineralogic data to determine their sources and the effects of mixing and boiling. Major and minor gaseous species were released from the inclusions by crushing or thermal decrepitation; noble gases were released by crushing. The samples were analyzed by mass spectrometry. The analyses document the presence of magmatic, crustal, and meteoric components in the trapped fluids. Hydrothermal fluids present during the liquid-dominated phase of the system contained gaseous species derived mainly from crustal and magmatic sources. At The Geysers, N-2/Ar ratios greater than 525 and He-3/He-4 ratios of 6-10.7 Ra are diagnostic of a magmatic component. Crustal gas has CO2/CH4 ratios less than 4, N-2/Ar ratios between 45 and 525, and low 3He/4He ratios (0.5 Ra). Meteoric fluids have CO2/CH4 ratios greater than 4 and N2/Ar ratios between 38 (air-saturated water) and 84 (air). However, N-2/Ar ratios between 15 and 110 can result from boiling. Ratios less than 15 reflect the incorporation of N-2 into NH3-bearing clay minerals. In the central Geysers, the incursion of meteoric fluids occurred during the transition from the liquid- to vapor-dominated regime. Variations in the relative CH4, CO2, and H-2 contents of the gas analyses demonstrate that boiling took place under open-system conditions. The gas data indicate that the inclusions have remained closed to the diffusion of He and H-2 since their formation.

Moore, Joseph N.; Norman, David I.; Kennedy, B. Mack.

2001-03-01T23:59:59.000Z

308

Comments on the DOE Hydrothermal Energy Conversion R&D Program  

DOE Green Energy (OSTI)

In his closing remarks at last year's program review, Roland Kessler pointed out two critical questions that must be asked with regard to any program funding: (1) What specifically will be accomplished with the funds requested and why does it matter? (2) What important accomplishments have been made with the funds you have spent? These seem to be good questions, whether in times of tight budgets or not. I kept these questions in mind as I reviewed the papers summarizing this year's progress in the Energy Conversion Program. The Materials research effort appears to be accomplishing useful results, some of which are already being tested by industry. In many ways, the past and present achievements of the geothermal industry are a direct result of materials problems overcome. The future growth of this industry will be facilitated by new and improved materials. It often follows from such developments that an industry will leapfrog itself. I therefore support the continuation of this work. The Brine Chemistry research project is of great value. Plant designers and permitting agencies alike benefit from predictive modeling tools which are both accurate and easy to use. I am especially pleased with UCSDs efforts at information transfer. The tutorials and free distribution of source code are to be commended. The preliminary models dealing with H{sub 2}S gas/liquid distributions and acid-base properties should be tested and finished as soon as possible. The work in progress which will allow better prediction of gas-liquid distributions after flashing is valuable and it too should be expedited.

Mendive, David L.

1992-03-24T23:59:59.000Z

309

Comments on the DOE Hydrothermal Energy Conversion R&D Program  

SciTech Connect

In his closing remarks at last year's program review, Roland Kessler pointed out two critical questions that must be asked with regard to any program funding: (1) What specifically will be accomplished with the funds requested and why does it matter? (2) What important accomplishments have been made with the funds you have spent? These seem to be good questions, whether in times of tight budgets or not. I kept these questions in mind as I reviewed the papers summarizing this year's progress in the Energy Conversion Program. The Materials research effort appears to be accomplishing useful results, some of which are already being tested by industry. In many ways, the past and present achievements of the geothermal industry are a direct result of materials problems overcome. The future growth of this industry will be facilitated by new and improved materials. It often follows from such developments that an industry will leapfrog itself. I therefore support the continuation of this work. The Brine Chemistry research project is of great value. Plant designers and permitting agencies alike benefit from predictive modeling tools which are both accurate and easy to use. I am especially pleased with UCSDs efforts at information transfer. The tutorials and free distribution of source code are to be commended. The preliminary models dealing with H{sub 2}S gas/liquid distributions and acid-base properties should be tested and finished as soon as possible. The work in progress which will allow better prediction of gas-liquid distributions after flashing is valuable and it too should be expedited.

Mendive, David L.

1992-03-24T23:59:59.000Z

310

The thermal conductivity of rock under hydrothermal conditions: measurements and applications  

SciTech Connect

The thermal conductivities of most major rock-forming minerals vary with both temperature and confining pressure, leading to substantial changes in the thermal properties of some rocks at the high temperatures characteristic of geothermal systems. In areas with large geothermal gradients, the successful use of near-surface heat flow measurements to predict temperatures at depth depends upon accurate corrections for varying thermal conductivity. Previous measurements of the thermal conductivity of dry rock samples as a function of temperature were inadequate for porous rocks and susceptible to thermal cracking effects in nonporous rocks. We have developed an instrument for measuring the thermal conductivity of water-saturated rocks at temperatures from 20 to 350 C and confining pressures up to 100 MPa. A transient line-source of heat is applied through a needle probe centered within the rock sample, which in turn is enclosed within a heated pressure vessel with independent controls on pore and confining pressure. Application of this technique to samples of Franciscan graywacke from The Geysers reveals a significant change in thermal conductivity with temperature. At reservoir-equivalent temperatures of 250 C, the conductivity of the graywacke decreases by approximately 25% relative to the room temperature value. Where heat flow is constant with depth within the caprock overlying the reservoir, this reduction in conductivity with temperature leads to a corresponding increase in the geothermal gradient. Consequently, reservoir temperature are encountered at depths significantly shallower than those predicted by assuming a constant temperature gradient with depth. We have derived general equations for estimating the thermal conductivity of most metamorphic and igneous rocks and some sedimentary rocks at elevated temperature from knowledge of the room temperature thermal conductivity. Application of these equations to geothermal exploration should improve estimates of subsurface temperatures derived from heat flow measurements.

Williams, Colin F.; Sass, John H.

1996-01-24T23:59:59.000Z

311

Site-Specific Analysis of Geothermal Development-Data Files of Prospective Sites  

DOE Green Energy (OSTI)

This document presents site-specific data and sample development schedules for the first plant on line at 30 hydrothermal and 7 geopressured prospective sites (prospects) that are believed to be suited for supporting the geothermal generation of electricity. This report includes many prospects from an earlier METREK report on geothermal development scenarios. The list has been augmented with other sites chosen as development prospects by the division of Geothermal Energy (DGE) of the Energy Research and Development Administration (ERDA). The DGE additions include a general area called ''Cascade Range''. METREK has chosen the following specific Cascade Range Sites in place of that general area: Baker Hot Springs, Mount Hood, Lassen and Glass Mountain/ Diablo. All the prospects have been selected on the basis of current knowledge of hydrothermal and geopressured resources. The selection is intended for program planning purposes. Neither METREK nor the Federal government warrants that any of these sites will necessarily be developed, nor does their selection necessarily imply any commitment on the part of the Federal government to their development. [DJE-2005

Williams, F.; Cohen, A.; Pfundstein, R.; Pond, S.

1977-10-01T23:59:59.000Z

312

Co-hydrolysis of hydrothermal and dilute acid pretreated Populus slurries to support development of a high-throughput pretreatment system  

E-Print Network (OSTI)

Abstract Background: The BioEnergy Science Center (BESC)production. Background The BioEnergy Science Center (BESC)abbreviations used BESC: BioEnergy Science Center; HT: high-

Studer, Michael H; Brethauer, Simone; DeMartini, Jaclyn D; McKenzie, Heather L; Wyman, Charles E

2011-01-01T23:59:59.000Z

313

Co-hydrolysis of hydrothermal and dilute acid pretreated Populus slurries to support development of a high-throughput pretreatment system  

E-Print Network (OSTI)

system. Biotechnology for Biofuels 2011 Submit your nextStuder et al. Biotechnology for Biofuels 2011, 4:19 http://Studer et al. Biotechnology for Biofuels 2011, 4:19 http://

Studer, Michael H; Brethauer, Simone; DeMartini, Jaclyn D; McKenzie, Heather L; Wyman, Charles E

2011-01-01T23:59:59.000Z

314

Management assistance for the development of hydrothermal energy in the Rocky ZMountain/Basin and Range Region. Final report, October 19, 1977-December 31, 1979  

DOE Green Energy (OSTI)

Abstracts of forty-six reports on this contract are presented. A comprehensive list of technical reports produced by geothermal sponsored by US DOE is included. (MHR)

Bowman, J.R.; Bruhn, R.L. Chapman, D.S.

1980-09-01T23:59:59.000Z

315

gouge under hydrothermal conditions  

E-Print Network (OSTI)

Seismic data, geologic observations and laboratory friction studies suggest that faults lithify and strengthen (heal) during the interseismic period of the earthquake cycle. We report on experiments to investigate the influence of healing duration and temperature on the strength and healing rate of simulated faults. Layers of #m-sized quartz powder were used to simulate granular fault gouge. Gouge layers were sheared within Sioux quartzite in a triaxial pressure vessel at elevated pressures (Pc = 250 MPa), elevated temperatures (230-636C), and in the presence of water (Prho = 75 MPa). We performed 'hold-slide ' experiments in which samples were subjected to a period of healing under hydrostatic load, followed by shear deformation. Healing times ranged from a few hundred s to 105 s. To isolate the effects of lithification and temperature on friction, we ran two types of hold-slide experiments: (1) samples were subjected to healing and shear deformation at elevated temperature; and (2) following healing at elevated temperature, temperature was reduced prior to shear. We also ran slide-hold-slide experiments in which samples were healed under shear load at elevated temperature (636C). Experiments in which deformation was carried out at a lower temperature than healing show that both the static and sliding coefficient of friction increase with heal time. Samples healed and deformed at higher temperature showed lower peak strengths, and within the scatter of our data, did not exhibit time-dependent strengthening. These data are interpreted to result from enhanced lithification rates at elevated temperature. Samples healed under shear load

Stephen L. Karner; Chris Marone; Brian Evans

1996-01-01T23:59:59.000Z

316

Regional hydrothermal commercialization plan  

SciTech Connect

This plan for the Rocky Mountain Basin and Range Region articulates the complete range of initiatives (federal, state, local, and industrial) required for the early commercialization of the regions geothermal resources. (MHR)

1978-07-14T23:59:59.000Z

317

Property:GEADevelopmentPhase | Open Energy Information  

Open Energy Info (EERE)

GEADevelopmentPhase GEADevelopmentPhase Jump to: navigation, search Property Name GEADevelopmentPhase Property Type Page Description GEA Development Phase, as characterized by their Annual U.S. Geothermal Power Production and Development Report. See GEA_Development_Phases Allows Values Phase I - Resource Procurement and Identification;Phase II - Resource Exploration and Confirmation;Phase III - Permitting and Initial Development;Phase IV - Resource Production and Power Plant Construction Subproperties This property has the following 77 subproperties: A Abraham Hot Springs Geothermal Area Adak Geothermal Area Akun Strait Geothermal Area Akutan Fumaroles Geothermal Area Alum Geothermal Area Alvord Hot Springs Geothermal Area Amedee Geothermal Area Arrowhead Hot Springs Geothermal Area

318

Complete genome sequence of the aerobic, heterotroph Marinithermus hydrothermalis type strain (T1T) from a deep-sea hydrothermal vent chimney  

Science Conference Proceedings (OSTI)

Marinithermus hydrothermalis Sako et al. 2003 is the type species of the monotypic genus Marinithermus. M. hydrothermalis T1 T was the first isolate within the phylum ThermusDeinococcus to exhibit optimal growth under a salinity equivalent to that of sea water and to have an absolute requirement for NaCl for growth. M. hydrothermalis T1 T is of interest because it may provide a new insight into the ecological significance of the aerobic, thermophilic decomposers in the circulation of organic compounds in deep-sea hydrothermal vent ecosystems. This is the first completed genome sequence of a member of the genus Marinithermus and the seventh sequence from the family Thermaceae. Here we describe the features of this organism, together with the complete genome sequence and annotation. The 2,269,167 bp long genome with its 2,251 protein-coding and 59 RNA genes is a part of the Genomic Encyclopedia of Bacteria and Archaea project.

Copeland, A [U.S. Department of Energy, Joint Genome Institute; Gu, Wei [U.S. Department of Energy, Joint Genome Institute; Yasawong, Montri [HZI - Helmholtz Centre for Infection Research, Braunschweig, Germany; Lapidus, Alla L. [U.S. Department of Energy, Joint Genome Institute; Lucas, Susan [U.S. Department of Energy, Joint Genome Institute; Deshpande, Shweta [U.S. Department of Energy, Joint Genome Institute; Pagani, Ioanna [U.S. Department of Energy, Joint Genome Institute; Tapia, Roxanne [Los Alamos National Laboratory (LANL); Cheng, Jan-Fang [U.S. Department of Energy, Joint Genome Institute; Goodwin, Lynne A. [Los Alamos National Laboratory (LANL); Pitluck, Sam [U.S. Department of Energy, Joint Genome Institute; Liolios, Konstantinos [U.S. Department of Energy, Joint Genome Institute; Ivanova, N [U.S. Department of Energy, Joint Genome Institute; Mavromatis, K [U.S. Department of Energy, Joint Genome Institute; Mikhailova, Natalia [U.S. Department of Energy, Joint Genome Institute; Pati, Amrita [U.S. Department of Energy, Joint Genome Institute; Chen, Amy [U.S. Department of Energy, Joint Genome Institute; Palaniappan, Krishna [U.S. Department of Energy, Joint Genome Institute; Land, Miriam L [ORNL; Pan, Chongle [ORNL; Brambilla, Evelyne-Marie [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Rohde, Manfred [HZI - Helmholtz Centre for Infection Research, Braunschweig, Germany; Tindall, Brian [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Sikorski, Johannes [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Goker, Markus [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Detter, J. Chris [U.S. Department of Energy, Joint Genome Institute; Bristow, James [U.S. Department of Energy, Joint Genome Institute; Eisen, Jonathan [U.S. Department of Energy, Joint Genome Institute; Markowitz, Victor [U.S. Department of Energy, Joint Genome Institute; Hugenholtz, Philip [U.S. Department of Energy, Joint Genome Institute; Kyrpides, Nikos C [U.S. Department of Energy, Joint Genome Institute; Klenk, Hans-Peter [DSMZ - German Collection of Microorganisms and Cell Cultures GmbH, Braunschweig, Germany; Woyke, Tanja [U.S. Department of Energy, Joint Genome Institute

2012-01-01T23:59:59.000Z

319

Template-free synthesis of CdS hollow nanospheres based on an ionic liquid assisted hydrothermal process and their application in photocatalysis  

Science Conference Proceedings (OSTI)

Polycrystalline CdS hollow nanospheres with diameter of about 130 nm have been successfully synthesized in high yield by an ionic liquid (IL) assisted template-free hydrothermal method for the first time. Both the molar ratios of Cd/S precursor in the solution and the reaction temperature play important roles in the formation of the CdS hollow nanospheres. The concentrations of capping agent hexamethylenetetramine (HMT) and polyvinylpyrrolidone (PVP) are also crucial for the morphology and size of the final product. IL was found to be a key component in the formation of CdS hollow structures, because solid spheres were obtained in the absence of IL. A subsequent growth mechanism of hollow interior by localized Ostwald ripening process has been further discussed. Such hollow structures show high photocatalytic ability in the photodegradation of methylene blue. - Graphical abstract: TEM images of typical as-prepared CdS hollow nanospheres.

Li Xinping; Gao Yanan; Yu Li [Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, Shandong 250100 (China); Zheng Liqiang, E-mail: lqzheng@sdu.edu.c [Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, Shandong 250100 (China)

2010-06-15T23:59:59.000Z

320

Geothermal Materials Development. Annual report FY 1991  

DOE Green Energy (OSTI)

Advances in the development of new materials, the commercial availabilities of which are essential for the attainment of Hydrothermal Category Level I and II Objectives, continue to be made in the Geothermal Materials Development Project. Many successes have already been accrued and the results used commercially. In FY 1991, utility company sponsored ``full cost`` recovery programs based upon materials technology developed in this project were initiated on topics such as condensing heat exchangers, high temperature composites for utility vaults used in district heating systems, and corrosion resistant coatings for use in oil-fired electric generating processes. In FY 1991 the DOE/GD-sponsored R&D project was focused on reducing well drilling, fluid transport and energy conversion costs. Specific activities being performed included lightweight CO{sub 2}- resistant well cements, chemical systems for lost circulation control, thermally conductive and scale resistant protective linear systems, corrosion mitigation in process components at The Geysers, and elastomer-metal bonding systems needed for use in high temperature well drilling and safety related applications.

Kukacka, L.E.

1991-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Geothermal Materials Development, Annual Report FY 1991  

DOE Green Energy (OSTI)

Advances in the development of new materials, the commercial availabilities of which are essential for the attainment of Hydrothermal Category Level I and II Objectives, continue to be made in the Geothermal Materials Development Project. Many successes have already been accrued and the results used commercially. In FY 1991, utility company sponsored full cost'' recovery programs based upon materials technology developed in this project were initiated on topics such as condensing heat exchangers, high temperature composites for utility vaults used in district heating systems, and corrosion resistant coatings for use in oil-fired electric generating processes. In FY 1991 the DOE/GD-sponsored R D project was focused on reducing well drilling, fluid transport and energy conversion costs. Specific activities being performed included lightweight CO{sub 2}- resistant well cements, chemical systems for lost circulation control, thermally conductive and scale resistant protective linear systems, corrosion mitigation in process components at The Geysers, and elastomer-metal bonding systems needed for use in high temperature well drilling and safety related applications.

Kukacka, L.E.

1991-12-01T23:59:59.000Z

322

Recent Developments in Japan's HDR Program  

DOE Green Energy (OSTI)

Japan is one of the most active volcanic countries in the world, and it is understood to have very abundant geothermal energy. In Japan, where only a limited amount of other natural energy resources are domestically available, geothermal energy is one of the nation's purely indigenous energy sources. Its development therefore, has, been anxiously urged. Geothermal energy is classified generally in several types: vapor dominated type resources, which are mainly used to generate electric power, and low grade hydrothermal fluid and hot dry rock type resources, most of which are not used at present in Japan. NEDO, the New Energy and Industrial Technology Development Organization, promotes the technological development of geothermal energy utilization in order to increase the use of this type of energy, particularly in such technical fields as the development of a power plant that uses hydrothermal fluids. This type of plant will enable the effective use for power generation of not only steam, but also geothermal fluid, so as to permit the use of hot water that flows out in great quantities together with useful geothermal steam. The vast volume of geothermal water with medium to high temperature left intact underground will also be possible to utilize. Research themes promoted by NEDO, the Geothermal Energy Technology Department and the budget for FY 1991 (from April 1991 to March 1992) are: (1) Development of 10MW Class Binary Cycle Power Plant ($2.0M); (2) Development of Down-hole Pump ($3.0M); (3) Development of Technology for increasing Geothermal Energy Recovery ($5.9M); (4) Development of Measurement While Drilling System ($0.4M); and (5) Development of Hot Dry Rock Power Generation Technology ($7.1M). The total amount of 18.4 Million dollars is allocated for FY 1991 ($1 = 130 yen). Figure 1 shows the budgets from FY 1990 to 1992 (requested). The total amount of budgets listed above is grouped into ''Technology R & D'' in Figure 1. Figure 1 also shows the budgets for ''Survey & Promotion'' items conducted by NEDO. This paper reviews the history of HDR development in Japan and summarizes the recent development of NEDO's HDR project. Since FY 1985, NEDO has been conducting research to develop basic technologies for hot dry rock geothermal power generation at Hijiori, Okura Village in Yamagata Prefecture. The main purpose of this research is developing a heat extracting circulation system in hot dry rock of depth and temperature similar to those expected for a commercial scale operation. Within this scope, NEDO developed fundamental technologies for creating an artificial geothermal reservoir, establishing hydraulic communication between wells, logging boreholes, observing acoustic emission (AE) events for fracture mapping, evaluating flow through the reservoir, and estimating geothermal heat recovery. In the hot dry rock geothermal project, especially in Japan, it is important to understand how pre-existing fractures affect hydrofracture development. At present, there are a number of methods that can be employed to understand the fractures, but it is necessary to evaluate which are, most appropriate and accurate. Since FY 1989, we have been performing small-scale fracture characterization experiments on-site in I-itate Village, Fukushima Prefecture, where the granite basement rock outcrops.

Yamaguchi, Tsutomu

1992-03-24T23:59:59.000Z

323

Development of a Plan to Implement Enhanced Geothermal Systems (EGS) in the Animas Valley, New Mexico - Final Report - 07/26/2000 - 02/01/2001  

SciTech Connect

The concept of producing energy from hot dry rock (HDR), originally proposed in 1971 at the Los Alamos National Laboratory, contemplated the generation of electric power by injecting water into artificially created fractures in subsurface rock formations with high heat flow. Recognizing the inherent difficulties associated with HDR, the concept of Enhanced Geothermal Systems was proposed. This embraces the idea that the amount of permeability and fluid in geothermal resources varies across a spectrum, with HDR at one end, and conventional hydrothermal systems at the other. This report provides a concept for development of a ''Combined Technologies Project'' with construction and operation of a 6 MW (net) binary-cycle geothermal power plant that uses both the intermediate-depth hydrothermal system at 1,200 to 3,300 feet and a deeper EGS capable system at 3,000 to 4,000 feet. Two production/injection well pairs will be drilled, one couplet for the hydrothermal system, and one for the E GS system. High-pressure injection may be required to drive fluid through the EGS reservoir from the injection to the production well.

Schochet, Daniel N.; Cunniff, Roy A.

2001-02-01T23:59:59.000Z

324

Development of a Plan to Implement Enhanced Geothermal Systems (EGS) in the Animas Valley, New Mexico - Final Report - 07/26/2000 - 02/01/2001  

DOE Green Energy (OSTI)

The concept of producing energy from hot dry rock (HDR), originally proposed in 1971 at the Los Alamos National Laboratory, contemplated the generation of electric power by injecting water into artificially created fractures in subsurface rock formations with high heat flow. Recognizing the inherent difficulties associated with HDR, the concept of Enhanced Geothermal Systems was proposed. This embraces the idea that the amount of permeability and fluid in geothermal resources varies across a spectrum, with HDR at one end, and conventional hydrothermal systems at the other. This report provides a concept for development of a ''Combined Technologies Project'' with construction and operation of a 6 MW (net) binary-cycle geothermal power plant that uses both the intermediate-depth hydrothermal system at 1,200 to 3,300 feet and a deeper EGS capable system at 3,000 to 4,000 feet. Two production/injection well pairs will be drilled, one couplet for the hydrothermal system, and one for the E GS system. High-pressure injection may be required to drive fluid through the EGS reservoir from the injection to the production well.

Schochet, Daniel N.; Cunniff, Roy A.

2001-02-01T23:59:59.000Z

325

Selected data for hydrothermal-convection systems in the United States with estimated temperatures greater than or equal to 90/sup 0/C: back-up data for US Geological Survey Circular 790  

DOE Green Energy (OSTI)

A compilation of data used in determining the accessible resource base for identified hydrothermal convection systems greater than or equal to 90/sup 0/C in the United States are presented. Geographic, geologic, chemical, isotopic, volumetric, and bibliographic data and calculated thermal energy contents are listed for all vapor-dominated and hot-water systems with estimated reservoir temperatures greater than or equal to 90/sup 0/C and reservoir depths less than 3 km known to the authors in mid 1978. Data presented here is stored in the US Geological Survey's geothermal computer file GEOTHERM. Data for individual hydrothermal convection systems in each state are arranged geographically from north to south and west to east without regard to the type or temperature of the system. Locations of the systems and corresponding reference numbers are shown on map 1 accompanying US Geological Survey Circular 790.

Mariner, R.H.; Brook, C.A.; Swanson, J.R.; Mabey, D.R.

1978-12-01T23:59:59.000Z

326

Jobs and Economic Development Impact (JEDI) Model Geothermal User Reference Guide  

Science Conference Proceedings (OSTI)

The Geothermal Jobs and Economic Development Impact (JEDI) model, developed through the National Renewable Energy Laboratory (NREL), is an Excel-based user-friendly tools that estimates the economic impacts of constructing and operating hydrothermal and Enhanced Geothermal System (EGS) power generation projects at the local level for a range of conventional and renewable energy technologies. The JEDI Model Geothermal User Reference Guide was developed to assist users in using and understanding the model. This guide provides information on the model's underlying methodology, as well as the parameters and references used to develop the cost data utilized in the model. This guide also provides basic instruction on model add-in features, operation of the model, and a discussion of how the results should be interpreted.

Johnson, C.; Augustine, C.; Goldberg, M.

2012-09-01T23:59:59.000Z

327

Integrated model for the natural flow regime in the Cerro Prieto hydrothermal system, B. C. , Mexico, based upon petrological and isotope geochemical criteria  

DOE Green Energy (OSTI)

Studies of cuttings and core at Cerro Prieto have now been extended to more than 50 boreholes. The aims of this petrological and isotopic work are to determine the shape of the reservoir, its physical properties, and its temperature distribution and flow regime before the steam field was produced. A map showing the first occurrence of hydrothermal epidote shows a dome-shaped top to the steam-producing zone. The hottest of the mapped mineral zones - the biotite vermiculite zone - shows a dome displaced to the northeast relative to the epidote zone. Patterns of mineral zones observed in wells are consistent with patterns of oxygen isotopic ratios in calcite and quartz. Using both criteria all of the boreholes so far studied were classified as belonging to one of four different regimes. These are: (a) the thermal plume of upward flowing water close to boiling, marked by a regular sequence of prograde mineral zones and large isotopic shifts; (b) the discharge system where fluid leaks to the surface, as indicated by the occurrence of only a few low temperature mineral zones, which extend over large depth intervals with little isotope exchange; (c) the horizontal flow zone, in which boreholes penetrate reversals of both mineral zones and isotope shifts with increasing depth; and (d) the recharge zone where cold water is descending. Plotting these four types of boreholes on a map reveals a simple, consistent, pattern. This is interpreted to have been produced by a thermal plume dipping at 45/sup 0/ to the northeast.

Elders, W.A.; Williams, A.E.; Hoagland, J.R.

1981-01-01T23:59:59.000Z

328

Development of Models to Simulate Tracer Behavior in Enhanced Geothermal Systems  

DOE Green Energy (OSTI)

A recent report found that power and heat produced from engineered (or enhanced) geothermal systems (EGSs) could have a major impact on the United States while incurring minimal environmental impacts. EGS resources differ from high-grade hydrothermal resources in that they lack sufficient temperature distributions, permeability/porosity, fluid saturation, or recharge of reservoir fluids. Therefore, quantitative characterization of temperature distributions and the surface area available for heat transfer in EGS is necessary for commercial development of geothermal energy. The goal of this project is to provide integrated tracer and tracer interpretation tools to facilitate this characterization. Modeling capabilities are being developed as part of this project to support laboratory and field testing to characterize engineered geothermal systems in single- and multi-well tests using tracers. The objective of this report is to describe the simulation plan and the status of model development for simulating tracer tests for characterizing EGS.

Williams, Mark D.; Vermeul, Vincent R.; Reimus, P. W.; Newell, D.; Watson, Tom B.

2010-06-01T23:59:59.000Z

329

District space heating potential of low temperature hydrothermal geothermal resources in the southwestern United States. Technical report  

DOE Green Energy (OSTI)

A computer simulation model (GIRORA-Nonelectric) is developed to study the economics of district space heating using geothermal energy. GIRORA-Nonelectric is a discounted cashflow investment model which evaluates the financial return on investment for space heating. This model consists of two major submodels: the exploration for and development of a geothermal anomaly by a geothermal producer, and the purchase of geothermal fluid by a district heating unit. The primary output of the model is a calculated rate of return on investment earned by the geothermal producer. The results of the sensitivity analysis of the model subject to changes in physical and economic parameters are given in this report. Using the results of the economic analysis and technological screening criteria, all the low temperature geothermal sites in Southwestern United States are examined for economic viability for space heating application. The methodology adopted and the results are given.

McDevitt, P.K.; Rao, C.R.

1978-10-01T23:59:59.000Z

330

Recent advances in the development of lightweight CO{sub 2}-resistant well cements  

DOE Green Energy (OSTI)

Regardless of the properties of the cured material, the practical use of advanced cementitious materials for geothermal well completions depends primarily upon the ability to predictably extend the thickening times for the precursor slurries at elevated temperatures to times sufficient to permit conventional placement. Ongoing work at Brookhaven National Laboratory being conducted with assistance from the geothermal industry, indicates that lightweight calcium phosphate cement slurries being developed as CO{sub 2{minus}} resistant well completion materials, can be conventional pumped at temperatures > 100{degrees}C without the addition of retarding admixtures. These slurries consist of mullite-shelled hollow microspheres, calcium aluminate cements and polybasic sodium phosphate. When cured in hydrothermal environments, the slurries yield high strength, low permeability cements which bond well to steel casing. Two compositional factors that affect the thickening times were identified. One is the calcium aluminate cement species that serve as the base reagent in the slurry formulation, and the other is the rate of hydrothermal reaction between the microspheres and the polybasic sodium phosphate solution.

Kukacka, L.E.; Sugama, T.

1995-12-31T23:59:59.000Z

331

Economic Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Corporation: 20,500 for upgrades to existing accounting software and training Three Eagles Development Corporation, Picuris Pueblo: 10,800 to update computer and account...

332

Revealing the Mechanisms behind SnO2 Nanoparticle Formation and Growth during Hydrothermal Synthesis: An In Situ Total Scattering Study  

SciTech Connect

The formation and growth mechanisms in the hydrothermal synthesis of SnO{sub 2} nanoparticles from aqueous solutions of SnCl{sub 4} {center_dot} 5H{sub 2}O have been elucidated by means of in situ X-ray total scattering (PDF) measurements. The analysis of the data reveals that when the tin(IV) chloride precursor is dissolved, chloride ions and water coordinate octahedrally to tin(IV), forming aquachlorotin(IV) complexes of the form [SnCl{sub x}(H{sub 2}O){sub 6-x}]{sup (4-x)+} as well as hexaaquatin(IV) complexes [Sn(H{sub 2}O){sub 6-y}(OH){sub y}]{sup (4-y)+}. Upon heating, ellipsoidal SnO{sub 2} nanoparticles are formed uniquely from hexaaquatin(IV). The nanoparticle size and morphology (aspect ratio) are dependent on both the reaction temperature and the precursor concentration, and particles as small as 2 nm can be synthesized. Analysis of the growth curves shows that Ostwald ripening only takes place above 200 C, and in general the growth is limited by diffusion of precursor species to the growing particle. The c-parameter in the tetragonal lattice is observed to expand up to 0.5% for particle sizes down to 2-3 nm as compared to the bulk value. SnO{sub 2} nanoparticles below 3-4 nm do not form in the bulk rutile structure, but as an orthorhombic structural modification, which previously has only been reported at pressures above 5 GPa. Thus, adjustment of the synthesis temperature and precursor concentration not only allows control over nanoparticle size and morphology but also the structure.

Billinge S. J.; Jensen, K.M.O.; Christensen, M.; Juhas, P.; Tyrsted, C.; Bojesen, E.D.; Lock, N.; Iversen, B.B.

2012-03-15T23:59:59.000Z

333

Geothermal Field Developments in Iceland  

SciTech Connect

The exploration and research carried out in conjunction with the exploitation of the various geothernal fields has vastly deepened our understanding of the hydrothermal systems in Inceland. They have proved to be more diverse with respect to physical state, chemical composition, hydrological properties, and geological control than previously thought. The purpose of the present paper is to review the present state of knowledge regarding the Icelandic geothermal systems, with emphasis on the production and reservoir engineering aspects.

Palmason, G.; Stefansson, V.; Thorhallsson, S.; Thorsteinsson, T.

1983-12-15T23:59:59.000Z

334

For Developers  

NLE Websites -- All DOE Office Websites (Extended Search)

Developers Developers Services Overview ECS Audio/Video Conferencing Fasterdata IPv6 Network Network Performance Tools (perfSONAR) ESnet OID Registry PGP Key Service Virtual Circuits (OSCARS) OSCARS Case Study Documentation User Manual FAQ Design Specifications Functional Specifications Notifications Publications Authorization Policy Default Attributes Message Security Clients For Developers DCN/OSCARS Implementation (Aug 2007) AAA BSS Pathfinder Topology Path realization Dojo development Interfaces Links Hardware Requirements DOE Grids Service Transition Contact Us Technical Assistance: 1 800-33-ESnet (Inside the US) 1 800-333-7638 (Inside the US) 1 510-486-7600 (Globally) 1 510-486-7607 (Globally) Report Network Problems: trouble@es.net Provide Web Site Feedback: info@es.net For Developers DCN/OSCARS Implementation (Aug 2007)

335

Advective-diffusive/dispersive transport of chemically reacting species in hydrothermal systems. Final report, FY83-85  

DOE Green Energy (OSTI)

A general formulation of multi-phase fluid flow coupled to chemical reactions was developed based on a continuum description of porous media. A preliminary version of the computer code MCCTM was constructed which implemented the general equations for a single phase fluid. The computer code MCCTM incorporates mass transport by advection-diffusion/dispersion in a one-dimensional porous medium coupled to reversible and irreversible, homogeneous and heterogeneous chemical reactions. These reactions include aqueous complexing, oxidation/reduction reactions, ion exchange, and hydrolysis reactions of stoichiometric minerals. The code MCCTM uses a fully implicit finite difference algorithm. The code was tested against analytical calculations. Applications of the code included investigation of the propagation of sharp chemical reaction fronts, metasomatic alteration of microcline at elevated temperatures and pressures, and ion-exchange in a porous column. Finally numerical calculations describing fluid flow in crystalline rock in the presence of a temperature gradient were compared with experimental results for quartzite.

Lichtner, P.C.; Helgeson, H.C.

1986-06-20T23:59:59.000Z

336

High-temperature explosive development for geothermal well stimulation. Final report  

DOE Green Energy (OSTI)

A two-component, temperature-resistant liquid explosive called HITEX has been developed which is capable of withstanding 561/sup 0/K (550/sup 0/F) for 24 hours in a geothermal environment. The explosive is intended for the stimulation of nonproducing or marginally producing geothermal (hot dry rock, vapor-dominated or hydrothermal) reservoirs by fracturing the strata in the vicinity of a borehole. The explosive is inherently safe because it is mixed below ground downhole from two nondetonable liquid components. Development and safety tests included differential scanning calorimetry, thermal stability, minerals compatibility, drop-weight sensitivity, adiabatic compression, electrostatic discharge sensitivity, friction sensitivity, detonation arrest capability, cook-off tests, detonability at ambient and elevated pressure, detonation velocity and thin film propagation in a wedge.

Schmidt, E.W.; Mars, J.E.; Wang, C.

1978-03-31T23:59:59.000Z

337

Methods Development  

Science Conference Proceedings (OSTI)

ISO committee and more information on standardization effects pertaining to AOCS. Methods Development Analytical Chemistry acid analysis Analytical Chemistry aocs applicants april articles atomic)FluorometryDifferential scanning calorimetry chemist chemi

338

Rapid microwave hydrothermal synthesis of ZnGa{sub 2}O{sub 4} with high photocatalytic activity toward aromatic compounds in air and dyes in liquid water  

Science Conference Proceedings (OSTI)

ZnGa{sub 2}O{sub 4} was synthesized from Ga(NO{sub 3}){sub 3} and ZnCl{sub 2} via a rapid and facile microwave-assisted hydrothermal method. The photocatalytic properties of the as-prepared ZnGa{sub 2}O{sub 4} were evaluated by the degradation of pollutants in air and aqueous solution under ultraviolet (UV) light illumination. The results demonstrated that ZnGa{sub 2}O{sub 4} had exhibited efficient photocatalytic activities higher than that of commercial P25 (Degussa Co.) in the degradation of benzene, toluene, and ethylbenzene, respectively. In the liquid phase degradation of dyes (methyl orange, Rhodamine B, and methylene blue), ZnGa{sub 2}O{sub 4} has also exhibited remarkable activities higher than that of P25. After 32 min of UV light irradiation, the decomposition ratio of methyl orange (10 ppm, 150 mL) over ZnGa{sub 2}O{sub 4} (0.06 g) was up to 99%. The TOC tests revealed that the mineralization ratio of MO (10 ppm, 150 mL) was 88.1% after 90 min of reaction. A possible mechanism of the photocatalysis over ZnGa{sub 2}O{sub 4} was also proposed. - Graphical abstract: In the degradation of RhB under UV light irradiation, ZnGa{sub 2}O{sub 4} had exhibited efficient photo-activity, and after only 24 min of irradiation the decomposition ratio was up to 99.8%. Highlights: Black-Right-Pointing-Pointer A rapid and facile M-H method to synthesize ZnGa{sub 2}O{sub 4} photocatalyst. Black-Right-Pointing-Pointer The photocatalyst exhibits high activity toward benzene and dyes. Black-Right-Pointing-Pointer The catalyst possesses more surface hydroxyl sites than TiO{sub 2} (P25). Black-Right-Pointing-Pointer Deep oxidation of different aromatic compounds and dyes over catalyst.

Sun Meng [School of Resources and Environment, University of Jinan, Jinan 250022 (China); Research Institute of Photocatalysis, State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, Fuzhou 350002 (China); Li Danzhen, E-mail: dzli@fzu.edu.cn [Research Institute of Photocatalysis, State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, Fuzhou 350002 (China); Zhang Wenjuan; Chen Zhixin; Huang Hanjie; Li Wenjuan; He Yunhui; Fu Xianzhi [Research Institute of Photocatalysis, State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, Fuzhou 350002 (China)

2012-06-15T23:59:59.000Z

339

Development Mining  

E-Print Network (OSTI)

This report, twenty-eighth of an annual series, describes mineral, oil and gas, and geothermal activities and accomplishments in Nevada in 2006: production statistics, exploration and development including drilling for petroleum and geothermal resources, discoveries of orebodies, new mines opened, and expansion and other activities of existing mines. Statistics of known gold and silver deposits, and directories of mines

Mark Alden; Stavros Anthony; Cedric Crear; Thalia M. Dondero; Dorothy Sewell Gallagher; Jason Geddes; Ron Knecht; James D. Leavitt; Howard Rosenberg; Jack L. Schofield; Steve Sisolak; James E. Rogers; Milton D. Glick; Jeffrey Thompson; Interim Dean; James V. Taranik

2006-01-01T23:59:59.000Z

340

Process Developments  

Science Conference Proceedings (OSTI)

...Although melt loss had become the major cost factor in ingot production, it was the soaring cost of energy during the 1973 energy crisis that triggered the search for more-efficient remelt processes. This effort also sought to develop process that were less labor intensive and more...

Note: This page contains sample records for the topic "hydrothermal gea development" from the National Library of EnergyBeta (NLEBeta).
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341

Preliminary study of the potential environmental concerns associated with surface waters and geothermal development of the Valles Caldera  

DOE Green Energy (OSTI)

A preliminary evaluation is presented of possible and probable problems that may be associated with hydrothermal development of the Valles Caldera Known Geothermal Resource Area (KGRA), with specific reference to surface waters. Because of the history of geothermal development and its associated environmental impacts, this preliminary evaluation indicates the Valles Caldera KGRA will be subject to these concerns. Although the exact nature and size of any problem that may occur is not predictable, the baseline data accumulated so far have delineated existing conditions in the streams of the Valles Caldera KGRA. Continued monitoring will be necessary with the development of geothermal resources. Further studies are also needed to establish guidelines for geothermal effluents and emissions.

Langhorst, G.J.

1980-06-01T23:59:59.000Z

342

DOE geothermal R&D program focused on facilitating long-term, cost-effective private resource development  

SciTech Connect

Analyses conducted in support of the National Energy Strategy projected that as much as 22,000 megawatts of cost-effective, moderate-temperature geothermal energy are available to the U.S. over the long-term, or to the year 2030. Thus, the primary hydrothermal technology research goal of the Department's Geothermal Division is to facilitate the ability of the private sector to exploit competitively this large source of energy up to that capacity level or greater. The primary mechanism for implementing this goal is an R&D core program cost-shared with industry focused on major cost-sensitive technology areas: exploration technology, reservoir engineering and management, and drilling. The NES analyses also indicated that electricity generated with energy derived from hot dry rock could be a geographically dispersed, logical follow-on to hydrothermal electricity in the longer term. In order to demonstrate whether energy at useful temperatures can be extracted over extended periods at competitive energy prices, a long-term flow test of an experimental HDR system will be conducted. This paper describes DOE's current participation in R&D activities leading to the development of ''cutting edge'' technology that will serve the geothermal industry's interest well into the next century.

Mock, John E.

1992-01-01T23:59:59.000Z

343

Hydrothermal alkali metal recovery process  

DOE Patents (OSTI)

In a coal gasification operation or similar conversion process carried out in the presence of an alkali metal-containing catalyst wherein solid particles containing alkali metal residues are produced, alkali metal constituents are recovered from the particles by treating them with a calcium or magnesium-containing compound in the presence of water at a temperature between about 250.degree. F. and about 700.degree. F. and in the presence of an added base to establish a pH during the treatment step that is higher than would otherwise be possible without the addition of the base. During the treating process the relatively high pH facilitates the conversion of water-insoluble alkali metal compounds in the alkali metal residues into water-soluble alkali metal constituents. The resultant aqueous solution containing water-soluble alkali metal constituents is then separated from the residue solids, which consist of the treated particles and any insoluble materials formed during the treatment step, and recycled to the gasification process where the alkali metal constituents serve as at least a portion of the alkali metal constituents which comprise the alkali metal-containing catalyst. Preferably, the base that is added during the treatment step is an alkali metal hydroxide obtained by water washing the residue solids produced during the treatment step.

Wolfs, Denise Y. (Houston, TX); Clavenna, Le Roy R. (Baytown, TX); Eakman, James M. (Houston, TX); Kalina, Theodore (Morris Plains, NJ)

1980-01-01T23:59:59.000Z

344

Environmental Assessment -- Hydrothermal Geothermal Subprogram  

DOE Green Energy (OSTI)

This environmental impact assessment addresses the design, construction, and operation of an electric generating plant (3 to 4 MWe) and research station (Hawaii Geothermal Research Station (HGRS)) in the Puna district on the Island of Hawaii. The facility will include control and support buildings, parking lots, cooling towers, settling and seepage ponds, the generating plant, and a visitors center. Research activities at the facility will evaluate the ability of a successfully flow-tested well (42-day flow test) to provide steam for power generation over an extended period of time (two years). In future expansion, research activities may include direct heat applications such as aquaculture and the effects of geothermal fluids on various plant components and specially designed equipment on test modules. Construction-related impacts would be relatively minor. Construction of the facility will require the distance of about 1.7 ha (4.1 acres). No further disturbance is anticipated, unless it becomes necessary to replace the seepage pond with an injection well, because the production well is in service and adjacent roads and transmission lines are adequate. Disruption of competing land uses will be minimal, and loss of wildlife habitat will be acceptable. Noise should not significantly affect wildlife and local residents; the most noise activities (well drilling and flow testing) have been completed. Water use during construction will not be large, and impacts on competing uses are unlikely. Socio-economic impacts will be small because the project will not employ a large number of local residents and few construction workers will need to find local housing.

None

1979-06-01T23:59:59.000Z

345

Hydrothermal alkali metal recovery process  

SciTech Connect

In a coal gasification operation or similar conversion process carried out in the presence of an alkali metal-containing catalyst wherein solid particles containing alkali metal residues are produced, alkali metal constituents are recovered from the particles by treating them with a calcium or magnesium-containing compound in the presence of water at a temperature between about 250/sup 0/F and about 700/sup 0/F and in the presence of an added base to establish a pH during the treatment step that is higher than would otherwise be possible without the addition of the base. During the treating process the relatively high pH facilitates the conversion of water-insoluble alkali metal compounds in the alkali metal residues into water-soluble alkali metal constituents. The resultant aqueous solution containing watersoluble alkali metal constituents is then separated from the residue solids, which consist of the treated particles and any insoluble materials formed during the treatment step, and recycled to the gasification process where the alkali metal constituents serve as at least a portion of the alkali metal constituents which comprise the alkali metal-containing catalyst. Preferably, the base that is added during the treatment step is an alkali metal hydroxide obtained by water washing the residue solids produced during the treatment step.

Clavenna, L.R.; Eakman, J.M.; Kalina, T.; Wolfs, D.Y.

1980-08-26T23:59:59.000Z

346

Instrument Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Cloud and Aerosol Characterization for Cloud and Aerosol Characterization for the ARM Central Facility: Multiple Remote Sensor Techniques Development K. Sassen Department of Meteorology University of Utah Salt lake City, UT 84112 overcome the poor data-handling capabilities that handi- capped multiple-channellidar studies in the past. The true diversity of transmitted and received polarization states of our system is illustrated at the bottom of Table 1. Note that the first full POL field tests will be made at the upcoming 1991 Project First ISCCP Regional Experiment (FIRE) Intensive Field Observations II campaign, where our unit will be one of severallidars and radars located at a central site serving as the hub for research aircraft operations. The increasingly complex data collected by the POL and other remote sensors using different wave-

347

FARADAYIC Development  

NLE Websites -- All DOE Office Websites (Extended Search)

FARADAYIC FARADAYIC Development of Electrically Mediated Electrophoretic Deposition for Thermal Barrier Coatings F A R A D A Y T E C H N O L O G Y , IN C . Joseph Kell 1 , Heather McCrabb 1 , Binod Kumar 2 1 Faraday Technology, Inc., Clayton, Ohio, USA 2 University of Dayton Research Institute, Dayton, Ohio, USA Contact: josephkell@faradaytechnology.com; heathermccrabb@faradaytechnology.com Background There is a need for an affordable, non-line-of-sight method of coating complex-shaped turbine engine components with thermal barrier coatings (TBCs) that have controllable thickness distributions and a microstructure that is sufficiently strain-tolerant and will survive in the turbine environment. Typically plasma spray (PS) or electron beam physical vapor deposition (EB-PVD) are used to deposit TBCs Electrophoretic deposition (EPD) is a non-line-of-sight process that is easy to control

348

INDUSTRIAL DEVELOPMENT  

E-Print Network (OSTI)

The views expressed in this paper are solely those of the authors. They do not necessarily represent the views of the World Bank or its member countries and should not be attributed to This paper examines the effect of foreign ownership on value added of firms in sub-Saharan Africa, using firm-level data from the Regional Program on Enterprise Development at the World Bank. The econometric analysis shows that foreign ownership has a significant effect on value added only when it exceeds a majority share. The results for Africa are consistent with the existing literature on foreign investment which argues that majority ownership creates appropriate incentives and provides greater opportunity to raise firm-level value added. 1

Vijaya Ramach; Manju Kedia Shah

1998-01-01T23:59:59.000Z

349

Nozzle development  

DOE Green Energy (OSTI)

The objective of this program has been the development of experimental techniques and data processing procedures to allow for the characterization of multi-phase fuel nozzles using laboratory tests. Test results were to be used to produce a single value coefficient-of-performance that would predict the performance of the fuel nozzles independent of system application. Several different types of fuel nozzles capable of handling multi-phase fuels have been characterized for: (a) fuel flow rate versus delivery pressure, (b) fuel-air ratio throughout the fuel spray or plume and the effective cone angle of the injector, and (c) fuel drop- or particle-size distribution as a function of fluid properties. Fuel nozzles which have been characterized on both single-phase liquids and multi-phase liquid-solid slurries include a variable-film-thickness nozzle, a commercial coal-water slurry (CWS) nozzle, and four diesel injectors of different geometries (tested on single-phase fluids only). Multi-phase mixtures includes CWS with various coal loadings, surfactant concentrations, and stabilizer concentrations, as well as glass-bead water slurries with stabilizing additives. Single-phase fluids included glycerol-water mixtures to vary the viscosity over a range of 1 to 1500 cP, and alcohol-water mixtures to vary the surface tension from about 22 to 73 dyne/cm. In addition, tests were performed to characterize straight-tube gas-solid nozzles using two differences size distributions of glass beads in air. Standardized procedures have been developed for processing measurements of spray drop-size characteristics and the overall cross-section average drop or particle size. 43 refs., 60 figs., 7 tabs.

Dodge, F.T.; Dodge, L.G.; Johnson, J.E.

1989-06-01T23:59:59.000Z

350

Enhanced Geothermal Systems Research and Development: Models of Subsurface Chemical Processes Affecting Fluid Flow  

DOE Green Energy (OSTI)

With funding from past grants from the DOE geothermal program and other agencies, we successfully developed advanced equation of state (EOS) and simulation technologies that accurately describe the chemistry of geothermal reservoirs and energy production processes via their free energies for wide XTP ranges. Using the specific interaction equations of Pitzer, we showed that our TEQUIL chemical models can correctly simulate behavior (e.g., mineral scaling and saturation ratios, gas break out, brine mixing effects, down hole temperatures and fluid chemical composition, spent brine incompatibilities) within the compositional range (Na-K-Ca-Cl-SO4-CO3-H2O-SiO2-CO2(g)) and temperature range (T < 350C) associated with many current geothermal energy production sites that produce brines with temperatures below the critical point of water. The goal of research carried out under DOE grant DE-FG36-04GO14300 (10/1/2004-12/31/2007) was to expand the compositional range of our Pitzer-based TEQUIL fluid/rock interaction models to include the important aluminum and silica interactions (T < 350C). Aluminum is the third most abundant element in the earths crust; and, as a constituent of aluminosilicate minerals, it is found in two thirds of the minerals in the earths crust. The ability to accurately characterize effects of temperature, fluid mixing and interactions between major rock-forming minerals and hydrothermal and/or injected fluids is critical to predict important chemical behaviors affecting fluid flow, such as mineral precipitation/dissolution reactions. We successfully achieved the project goal and objectives by demonstrating the ability of our modeling technology to correctly predict the complex pH dependent solution chemistry of the Al3+ cation and its hydrolysis species: Al(OH)2+, Al(OH)2+, Al(OH)30, and Al(OH)4- as well as the solubility of common aluminum hydroxide and aluminosilicate minerals in aqueous brines containing components (Na, K, Cl) commonly dominating hydrothermal fluids. In the sodium chloride system, where experimental data for model parameterization are most plentiful, the model extends to 300C. Determining the stability fields of aluminum species that control the solubility of aluminum-containing minerals as a function of temperature and composition has been a major objective of research in hydrothermal chemistry.

Moller, Nancy; Weare J. H.

2008-05-29T23:59:59.000Z

351

Hydrothermal durability of Ca-complexed methylmethacrylate-trimethylolpropane trimethacrylate copolymer films and coatings containing superficially formed CaO-SiO/sub 2/-H/sub 2/O type inorganic macromolecules  

DOE Green Energy (OSTI)

A CaO-SiO/sub 2/-H/sub 2/O macromolecular-ionomer complex was found to be formed in the superficial layers of MMA-TMPTMA copolymer composite films made with filler containing hydraulic cement during exposure in an autoclave at temperatures up to 200/sup 0/C. This superficially formed complex in terms of self-healing protective layers, acted to prevent the hydrothermal deterioration of the original composite films, which is important if the films are used as protective layers on metals. Studies of the adhesion of the complex composite coatings to chemically treated metal surfaces were also performed. It was found that the surface topography of hopeite crystalline layers results in an increase in wetting forces and mechanical interlocking forces.

Sugama, T.; Kukacka, L.E.

1983-12-01T23:59:59.000Z

352

Geology, hydrothermal petrology, stable isotope geochemistry, and fluid inclusion geothermometry of LASL geothermal test well C/T-1 (Mesa 31-1), East Mesa, Imperial Valley, California, USA  

DOE Green Energy (OSTI)

Borehole Mesa 31-1 (LASL C/T-1) is an 1899-m (6231-ft) deep well located in the northwestern part of the East Mesa Geothermal Field. Mesa 31-1 is the first Calibration/Test Well (C/T-1) in the Los Alamos Scientific Laboratory (LASL), Geothermal Log Interpretation Program. The purpose of this study is to provide a compilation of drillhole data, drill cuttings, well lithology, and formation petrology that will serve to support the use of well LASL C/T-1 as a calibration/test well for geothermal logging. In addition, reviews of fluid chemistry, stable isotope studies, isotopic and fluid inclusion geothermometry, and the temperature log data are presented. This study provides the basic data on the geology and hydrothermal alteration of the rocks in LASL C/T-1 as background for the interpretation of wireline logs.

Miller, K.R.; Elders, W.A.

1980-08-01T23:59:59.000Z

353

Developers | Data.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

Developers Developer Data Web Services Source Code Challenges Semantic Web Blogs Let's Talk Developers Welcome to Developers.Data.gov This community brings together developers from...

354

Planned Geothermal Capacity | Open Energy Information  

Open Energy Info (EERE)

Planned Geothermal Capacity Planned Geothermal Capacity Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Planned Geothermal Capacity This article is a stub. You can help OpenEI by expanding it. General List of Development Projects Map of Development Projects Planned Geothermal Capacity in the U.S. is reported by the Geothermal Energy Association via their Annual U.S. Geothermal Power Production and Development Report (April 2011). Related Pages: GEA Development Phases Geothermal Development Projects Add.png Add a new Geothermal Project Please be sure the project does not already exist in the list below before adding - perhaps under a different name. Technique Developer Phase Project Type Capacity Estimate (MW) Location Geothermal Area Geothermal Region GEA Report

355

VAP Development: Initiation, Development, Evaluation, and Release  

SciTech Connect

This white paper provides a plan to formalize the evaluation of newly developed VAPs and a framework for the development of value-added products through four different stages: Initiation, Development, Evaluation, and Release.

Jensen, M; Collis, Fast, J; Flynn, C; Mather, J; McFarlane, S; Monroe, J; Sivaraman, C; Xie, S

2011-02-23T23:59:59.000Z

356

Category:Geothermal Projects | Open Energy Information  

Open Energy Info (EERE)

Projects Projects Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Category:Geothermal Projects Each year different agencies report the upcoming geothermal developing projects. The Geothermal Energy Association (GEA) publishes their findings in their annual US Geothermal Power Production and Development Update, in which it lists geothermal projects in one of four phases of development. SNL Financial reports geothermal projects and they collect their information from a variety of sources including EIA, company websites, press releases, and various other sources. The list below is intended to be a centralized list of geothermal projects from a variety of reporting sources. This list of projects may be sourced from GEA, SNL, EIA, press releases, or individual developers.

357

Puna Geothermal Project | Open Energy Information  

Open Energy Info (EERE)

Puna Geothermal Project Puna Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Puna Geothermal Project Project Location Information Location Puna, Hawaii County Hawaii County, Hawaii Geothermal Area Hawaii Geothermal Region Geothermal Project Profile Developer Puna Geothermal Venture Project Type Hybrid Flash/Binary GEA Development Phase Operational"Operational" is not in the list of possible values (Phase I - Resource Procurement and Identification, Phase II - Resource Exploration and Confirmation, Phase III - Permitting and Initial Development, Phase IV - Resource Production and Power Plant Construction) for this property. Planned Capacity (MW) 38 MW38,000 kW 38,000,000 W 38,000,000,000 mW 0.038 GW 3.8e-5 TW GEA Report Date

358

Study of the potential health and environmental impacts from the development of liquid-dominated geothermal resources  

DOE Green Energy (OSTI)

This document describes seven programs to provide scientific input, understanding, and forecasting capability for hydrothermal energy areas needing resolution. The three major areas addressed are (1) the impacts on living components of the aqueous and terrestrial ecosystems, (2) the impacts on the quality of the abiotic environment itself, and (3) the techniques needed to measure releases from hydrothermal activities.

Williams, J.M. (ed.)

1982-09-01T23:59:59.000Z

359

The National Energy Strategy - The role of geothermal technology development: Proceedings  

DOE Green Energy (OSTI)

Each year the Geothermal Division of the US Department of Energy conducts an in-depth review of its entire geothermal R D program. The conference serves several purposes: a status report on current R D activities, an assessment of progress and problems, a review of management issues, and a technology transfer opportunity between DOE and the US geothermal industry. Topics in this year's conference included Hydrothermal Energy Conversion Technology, Hydrothermal Reservoir Technology, Hydrothermal Hard Rock Penetration Technology, Hot Dry Rock Technology, Geopressured-Geothermal Technology and Magma Energy Technology. Each individual paper has been cataloged separately.

Not Available

1990-01-01T23:59:59.000Z

360

The National Energy Strategy - The role of geothermal technology development: Proceedings  

SciTech Connect

Each year the Geothermal Division of the US Department of Energy conducts an in-depth review of its entire geothermal R D program. The conference serves several purposes: a status report on current R D activities, an assessment of progress and problems, a review of management issues, and a technology transfer opportunity between DOE and the US geothermal industry. Topics in this year's conference included Hydrothermal Energy Conversion Technology, Hydrothermal Reservoir Technology, Hydrothermal Hard Rock Penetration Technology, Hot Dry Rock Technology, Geopressured-Geothermal Technology and Magma Energy Technology. Each individual paper has been cataloged separately.

1990-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Development of Models to Simulate Tracer Tests for Characterization of Enhanced Geothermal Systems  

Science Conference Proceedings (OSTI)

A recent report found that power and heat produced from enhanced (or engineered) geothermal systems (EGSs) could have a major impact on the U.S energy production capability while having a minimal impact on the environment. EGS resources differ from high-grade hydrothermal resources in that they lack sufficient temperature distribution, permeability/porosity, fluid saturation, or recharge of reservoir fluids. Therefore, quantitative characterization of temperature distributions and the surface area available for heat transfer in EGS is necessary for the design and commercial development of the geothermal energy of a potential EGS site. The goal of this project is to provide integrated tracer and tracer interpretation tools to facilitate this characterization. This project was initially focused on tracer development with the application of perfluorinated tracer (PFT) compounds, non-reactive tracers used in numerous applications from atmospheric transport to underground leak detection, to geothermal systems, and evaluation of encapsulated PFTs that would release tracers at targeted reservoir temperatures. After the 2011 midyear review and subsequent discussions with the U.S. Department of Energy Geothermal Technology Program (GTP), emphasis was shifted to interpretive tool development, testing, and validation. Subsurface modeling capabilities are an important component of this project for both the design of suitable tracers and the interpretation of data from in situ tracer tests, be they single- or multi-well tests. The purpose of this report is to describe the results of the tracer and model development for simulating and conducting tracer tests for characterizing EGS parameters.

Williams, Mark D.; Reimus, Paul; Vermeul, Vincent R.; Rose, Peter; Dean, Cynthia A.; Watson, Tom B.; Newell, D.; Leecaster, Kevin; Brauser, Eric

2013-05-01T23:59:59.000Z

362

Hydrothermal synthesis and crystal structure of a new inorganic/organic hybrid of scandium sulfate: (H{sub 2}en)Sc{sub 2}(SO{sub 4}){sub 4}.(H{sub 2}O){sub 0.72}  

SciTech Connect

The first organically templated layered structure of scandium sulfate, (H{sub 2}en)Sc{sub 2}(SO{sub 4}){sub 4}.(H{sub 2}O){sub 0.72}, (en=ethylenediamine) was synthesized by a hydrothermal method and characterized by single crystal X-ray diffraction. In the title compound, scandium ions are bridged by sulfate groups with a ratio of 1:2 into a 4{sub 3}{sup 6} layer structure. These layers are parallel packed and separated from each other by ethylenediammonium dications and water molecules. The title compound crystallizes in the monoclinic space group P2/c, with cell parameters a=8.5966(13)A, b=5.1068(8)A, c=18.847(3)A, {beta}=91.210(3){sup o}, V=827.2(2)A{sup 3} and Z=2. Refinement gave R{sub 1}[I>2{sigma}(I)]=0.0354 and wR{sub 2}[I>2{sigma}(I)]=0.0878. Thermogravimetric analysis indicates that this material is thermally stable to above 400 deg. C.

Lu Jianjiang [Materials Science Division, Argonne National Laboratory, 9700 S Cass Avenue, Argonne, IL 60439 (United States)]. E-mail: j.lu@anl.gov; Schlueter, John A. [Materials Science Division, Argonne National Laboratory, 9700 S Cass Avenue, Argonne, IL 60439 (United States); Geiser, Urs [Materials Science Division, Argonne National Laboratory, 9700 S Cass Avenue, Argonne, IL 60439 (United States)

2006-05-15T23:59:59.000Z

363

Staff Development Program Bibliography  

NLE Websites -- All DOE Office Websites (Extended Search)

"Staff Development and the Individual," in S. Caldwell (Ed.) Staff Development: A Handbook of Effective Practices. Oxford, OH: National Staff Development Council. Lieberman, A....

364

Environmental overview for the development of geothermal resources in the State of New Mexico. Final report  

DOE Green Energy (OSTI)

A brief overview of the present day geothermal applications for hydrothermal electrical generation and direct heat use and their environmental implications is provided. Technologies and environmental impacts are considered at all points on the pathway of development resource exploration; well field, plant and transmission line construction; and plant operation. The technologies for electrical generation-direct, dry steam conversion; separated steam conversion; single-flash conversion, separated-steam/single-flash conversion and binary cycle conversion and the technologies for direct heat use - direct use of geothermal waters, surface heat exhanger, down-the hole heat exchanger and heat pump are described. A summary of the geothermal technologies planned or in operation within New Mexico geothermal areas is provided. A review of regulations that affect geothermal development and its related environmental impact in New Mexico is presented. The regulatory pathway, both state and federal, of geothermal exploration after the securing of appropriate leases, development, and construction and implementation of a geothermal facility are described. Six categories (Geophysical, Water, Air, Noise, Biota and Socioeconomics) were selected for environmental assessment. The data available is described.

Bryant, M.; Starkey, A.H.; Dick-Peddie, W.A.

1980-06-01T23:59:59.000Z

365

Controls on the geomorphic expression and evolution of gryphons, pools, and caldera features at hydrothermal seeps in the Salton Sea Geothermal Field,  

E-Print Network (OSTI)

(reviewed in [6,7]). This area has received considerable interest lately, propelled by developments in Biotechnology 2006, 17:250­255 www.sciencedirect.com #12;geothermal spring in Yellowstone National Park as environmental, community genomics or metagenomics. Few areas of biology have witnessed such a surge in interest

Mazzini, Adriano

366

Assessment of the Geothermal Development of Mexico  

DOE Green Energy (OSTI)

Mexico, with a 60 million population has an extension of almost 2 million square kilometers. A large number of volcanoes and hydrothermal manifestations are found in the area, particularly along the Pacific Coast. The electricity needs of this country require its installed capacity to be doubled every eight-and-a-half years. Although its main energy source is the hydrocarbons, new sources of energy are being investigated and developed. In 1973, at Cerro Prieto, a 75 MW plant was inaugurated utilizing geothermal steam, initiating in this way commercial exploitation of this energy. From there on an uninterrupted program of exploration and development has been followed, along and across the country. Probably the region with the highest potential of geothermal energy is the New-volcanic Belt, a zone 300 kilometers wide which crosses the country from the Pacific Coast to the Gulf of Mexico Coast. In this zone, the geothermal fields of Los Azufres, Los Negritos, Ixtlan de los Hervores, La Primavera and San Marcos are located. Sixteen wells have been drilled at Los Azufres, 14 good producers with an average temperature of 275 C. An area of 385 square kilometers is estimated can be exploited for steam production. By 1981, it is expected to have four wellhead turbogenerators rated 6 MW each. Two geothermal wells are now being drilled at La Primavera, with very good results. Temperatures of 275 C have been found at a depth of 800 m in the first well of the Rio Caliente module. The first two wells are now being drilled at Los Humeros geothermal zone. To date, 80 wells have been drilled at Cerro Prieto. In the last group of wells the producing stratum was found at a depth between 2000 and 3000 m. The temperature of this stratum is about 340 C, and each well has an average output of 200 tons per hour. Research is now being conducted to solve the problems encountered of casing corrosion, and for the development of better cementing materials and improved cementing techniques, since the results obtained have not been entirely satisfactory, being the life of the geothermal wells shortened, increasing the cost of power generation. Since its inauguration in 1973, Cerro Prieto has been generating electricity continuously, with increasing annual plant factors, better than 90 percent in the last three years. As of this date, the installed capacity at Cerro Prieto is 150 MW. The installation of a fifth unit of 30 MW is now underway. This unit will utilize low pressure steam flashed from the separated water, now being discarded from units 1 to 4. A flashing plant is currently being installed for this purpose. This means a 20 percent increase without drilling more wells. Future plans are the construction of two more plants of 200 MW each, for a total of 620 MW for May 1983. These units will be operating at slightly higher pressures than the existing ones. It is estimated that a total capacity of 40,000 MW could be installed by the year 2000, using steam obtained from the known geothermal areas of Mexico.

Dominguez, B.; Bermejo, F.; Guiza, J.

1980-12-01T23:59:59.000Z

367

EIS | OpenEI Community  

Open Energy Info (EERE)

495 495 Varnish cache server Home Groups Community Central Green Button Applications Developer Utility Rate FRED: FRee Energy Database More Public Groups Private Groups Features Groups Blog posts Content Stream Documents Discussions Polls Q & A Events Notices My stuff Energy blogs 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load) Guru Meditation: XID: 2142287495 Varnish cache server EIS Home Kyoung's picture Submitted by Kyoung(155) Contributor 14 October, 2013 - 20:19 Geothermal NEPA Workshop at GRC Categorical Exclusions CX Database EA EIS FONSI GEA GRC GRR NEPA On Tuesday, October 2, the Geothermal Technology Office and the National Renewable Energy Laboratory held a 1/2-day NEPA workshop. The workshop was held at the MGM Grand in Las Vegas, in conjunction with the GEA/GRC

368

Geothermal NEPA Workshop at GRC | OpenEI Community  

Open Energy Info (EERE)

Geothermal NEPA Workshop at GRC Geothermal NEPA Workshop at GRC Home > Groups > Geothermal Regulatory Roadmap Kyoung's picture Submitted by Kyoung(155) Contributor 14 October, 2013 - 20:19 Categorical Exclusions CX Database EA EIS FONSI GEA GRC GRR NEPA On Tuesday, October 2, the Geothermal Technology Office and the National Renewable Energy Laboratory held a 1/2-day NEPA workshop. The workshop was held at the MGM Grand in Las Vegas, in conjunction with the GEA/GRC Tradeshow and Conference. Three presentations were given, describing the NEPA database and associated analysis that had been conducted in 2013. 1. NEPA Database: The NEPA Database was developed on OpenEI as a way to assemble NEPA-related documents and meta-data in one location. As of this posting, there are 175 document sets in the collection, including

369

Geothermal Program Review VII: proceedings. DOE Research and Development for the Geothermal Marketplace  

DOE Green Energy (OSTI)

Each year the Geothermal Technology Division of the US Department of Energy conducts an indepth review of its entire geothermal R and D program. The 2--3 day conference serves several purposes: a status report on current R and D activities, an assessment of progress and problems, a review of management issues, and a technology transfer opportunity between DOE and the US geothermal industry. This year's conference, Program Review 7, was held in San Francisco on March 21--23, 1989. As indicated by its title, ''DOE Research and Development for the Geothermal Marketplace'', Program Review 7 emphasized developing technologies, concepts, and innovations having potential for commercial application in the foreseeable future. Program Review 7 was comprised of eight sessions including an opening session and a special presentation on the ''Role of Geothermal Energy in Minimizing Global Environmental Problems.'' The five technical sessions covered GTD-sponsored R and D in the areas of hydrothermal (two sessions), hot dry rock, geopressured, and magma. Presentations were made by the relevant field researchers, and sessions were chaired by the appropriate DOE Operations Office Geothermal Program Manager. The technical papers and commentary of invited speakers contained in these Proceedings have been compiled in the order in which they were presented at Program Review 7.

Not Available

1989-01-01T23:59:59.000Z

370

Hydrothermal synthesis and the crystal structure of borate cancrinite (Na,Ca){sub 2}[Na{sub 6}(AlSiO{sub 4}){sub 6}](BO{sub 3}) . 2H{sub 2}O  

Science Conference Proceedings (OSTI)

Transparent prismatic single crystals of borate cancrinite (Na,Ca){sub 2}[Na{sub 6}(AlSiO{sub 4}){sub 6}](BO{sub 3}) . 2H{sub 2}O are prepared through hydrothermal crystallization. The parameters of the hexagonal unit cell and intensities of 10806 reflections are measured on an Enraf-Nonius CAD4 automated diffractometer. The compound crystallizes in the hexagonal crystal system with the unit cell parameters a = 12.745(4) A, c = 5.180(2) A, V = 728.6(4) A{sup 3}, and space group P6{sub 3}. The structure is determined by direct methods and refined using the full-matrix least-squares procedure in the anisotropic approximation for the non-hydrogen atoms. The refinement of the structure is performed to the final discrepancy factor R{sub 1} = 0.027 for 2889 unique reflections with I > 2 {sigma} (I). In the structure of the borate cancrinite, the AlO{sub 4} and SiO{sub 4} tetrahedra form a zeolite-like framework in which twelve-membered hexagonal channels are occupied by sodium atoms and BO{sub 3} groups, whereas six-membered channels are filled with sodium and calcium atoms and water molecules. The mean interatomic distances are found to be as follows: (Si-O){sub mean} = 1.614 A and (Al-O){sub mean} = 1.741 A in the AlO{sub 4} and SiO{sub 4} tetrahedra, (Na-O){sub mean} = 2.542 A in the seven-vertex sodium polyhedra, and [(Na,Ca)-O]{sub mean} = 2.589 A in the ditrigonal bipyramids.

Shirinova, A. F. [Baku State University (Azerbaijan)], E-mail: afashf@rambler.ru; Khrustalev, V. N. [Russian Academy of Sciences, Nesmeyanov Institute of Organoelement Compounds (Russian Federation); Samedov, H. R. [National Academy of Sciences of Azerbaijan, Institute of Chemical Problems (Azerbaijan); Chiragov, M. I. [Baku State University (Azerbaijan)

2006-01-15T23:59:59.000Z

371

Coal Development (Nebraska)  

Energy.gov (U.S. Department of Energy (DOE))

This section provides for the development of newly-discovered coal veins in the state, and county aid for such development.

372

Technikon Green Energy Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Technikon Green Energy Development November 16, 2009 2 Technikon'sRenewable Energy Testing Center 60,000 sq. ft. Energy Application Validation and Development Laboratory Formed...

373

Regional Development Authorities (Indiana)  

Energy.gov (U.S. Department of Energy (DOE))

This legislation authorizes the establishment of local development authorities in Indiana. A development authority established under this law may acquire, construct, equip, own, lease, and finance...

374

Information Solutions: Web Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Web Development IS provides management, maintenance, and development of APS Internet and Intranet web pages. Contact Webmaster Configuring Dreamweaver: Windows | Mac Improving...

375

ORISE: Web Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Web Development As computer-based applications become increasingly popular for the delivery of health care training and information, the need for Web development in support of...

376

The Role of Low-Angle Extensional Tectonics, Flat Fracture Domains, and Gravity Slides in Hydrothermal and EGS Resources of the Western United States  

Science Conference Proceedings (OSTI)

The Steamboat Springs geothermal system provides the most dramatic example of subhorizontal thermal-fluid aquifers in crystalline rock in the Basin and Range, but this is by no means an isolated case. Similar but more diffuse subhorizontal permeability has been reported at Roosevelt Hot Springs and Cove-Fort Sulphurdale, Utah; and a km-scale gravity-slide block channels injectate at Dixie Valley, Nevada. During the course of this phase of the project 2543 reports including text, figures and large format enclosures, 1428 maps, and 698 well logs were scanned. The information is stored in a Microsoft Access Database on the Geothermal Server. Detailed geologic cross sections of the Desert Peak geothermal field were developed to identify the structural controls on the geothermal system and locate possible fluid flow paths. The results of this work were published by Lutz and others (2009, Appendix 1) in the Stanford Reservoir Engineering Conference Proceedings.

Joseph Moore

2011-08-24T23:59:59.000Z

377

Geothermal development opportunities in developing countries  

DOE Green Energy (OSTI)

This report is the proceedings of the Seminar on geothermal development opportunities in developing countries, sponsored by the Geothermal Division of the US Department of Energy and presented by the National Geothermal Association. The overall objectives of the seminar are: (1) Provide sufficient information to the attendees to encourage their interest in undertaking more geothermal projects within selected developing countries, and (2) Demonstrate the technological leadership of US technology and the depth of US industry experience and capabilities to best perform on these projects.

Kenkeremath, D.C.

1989-11-16T23:59:59.000Z

378

Technical Guidelines Development Committee  

Science Conference Proceedings (OSTI)

TECHNICAL GUIDELINES DEVELOPMENT COMMITTEE (TGDC). The TGDC has been chartered by the US Election Assistance ...

2012-11-07T23:59:59.000Z

379

SES CANDIDATE DEVELOPMENT PROGRAM  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

CANDIDATE DEVELOPMENT PROGRAM (SESCDP) CANDIDATE DEVELOPMENT PROGRAM (SESCDP) DOE F 360.1 (11-03) Executive Development Plan (EDP) Name: Title: Organization: Office: RATIONALE FOR PLAN: APPROVALS: Candidate Signature: Date: Supervisor: Date: Mentor: Date: SES Candidate Development Program Manager: Date: DOE Executive Resources Board: Date: 1 U.S. DEPARTMENT OF ENERGY DOE F 360.1 (11-03) SENIOR EXECUTIVE SERVICE CANDIDATE DEVELOPMENT PROGRAM (SESCDP) Executive Development Plan (EDP) NAME OF SES CANDIDATE: DATE: EXECUTIVE CORE QUALIFICATION 1: LEADING CHANGE This core qualification encompasses the ability to develop and implement an organizational vision which integrates key national and program

380

Development of dual phase magnesia-zirconia ceramics for light water reactor inert matrix fuel  

E-Print Network (OSTI)

Dual phase magnesia-zirconia ceramics were developed, characterized, and evaluated as a potential matrix material for use in light water reactor inert matrix fuel intended for the disposition of plutonium and minor actinides. Ceramics were fabricated from the oxide mixture using conventional pressing and sintering techniques. Characterization of the final product was performed using optical microscopy, scanning electron microscopy, x-ray diffraction analysis, and energy-dispersive x-ray analysis. The final product was found to consist of two phases: cubic zirconia-based solid solution and cubic magnesia. Evaluation of key feasibility issues was limited to investigation of long-term stability in hydrothermal conditions and assessment of the thermal conductivity. With respect to hydrothermal stability, it was determined that limited degradation of these ceramics at 300^oC occurred due to the hydration of the magnesia phase. Normalized mass loss rate, used as a quantitative indicator of degradation, was found to decrease exponentially with the zirconia content in the ceramics. The normalized mass loss rates measured in static 300^oC de-ionized water for the magnesia-zirconia ceramics containing 40, 50, 60, and 70 weight percent of zirconia are 0.00688, 0.00256, 0.000595, 0.000131 g/cm2/hr respectively. Presence of boron in the water had a dramatic positive effect on the hydration resistance. At 300^oC the normalized mass loss rates for the composition containing 50 weight percent of zirconia was 0.00005667 g/cm2/hr in the 13000 ppm aqueous solution of the boric acid. With respect to thermal conductivity, the final product exhibits values of 5.5-9.5 W/(m deg) at 500^oC, and 4-6 W/(m deg) at 1200^oC depending on the composition. This claim is based on the assessment of thermal conductivity derived from thermal diffusivity measured by laser flash method in the temperature range from 200 to 1200^oC, measured density, and heat capacity calculated using rule of mixtures. Analytical estimates of the anticipated maximum temperature during normal reactor operation in a hypothetical inert matrix fuel rod based on the magnesia-zirconia ceramics yielded the values well below the melting temperature and well below current maximum temperatures authorized in light water reactors.

Medvedev, Pavel

2004-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

ORISE: Web Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Web Development Web Development As computer-based applications become increasingly popular for the delivery of health care training and information, the need for Web development in support of these tools continues to grow. The Oak Ridge Institute for Science and Education (ORISE) provides Web development capabilities to government agencies and organizations interested in converting training and education programs based on traditional means of communication into a variety of tools that suit the technology skills of today's health care providers and patients. ORISE develops Web-based training and informational products that expand the reach of targeted health messages to key audiences. Our specific capabilities include: Web applications development User experience testing

382

Hanford Site Development Plan  

SciTech Connect

The Hanford Site Development Plan (Site Development Plan) is intended to guide the short- and long-range development and use of the Hanford Site. All acquisition, development, and permanent facility use at the Hanford Site will conform to the approved plan. The Site Development Plan also serves as the base document for all subsequent studies that involve use of facilities at the Site. This revision is an update of a previous plan. The executive summary presents the highlights of the five major topics covered in the Site Development Plan: general site information, existing conditions, planning analysis, Master Plan, and Five-Year Plan. 56 refs., 67 figs., 31 tabs.

Rinne, C.A.; Curry, R.H.; Hagan, J.W.; Seiler, S.W.; Sommer, D.J. (Westinghouse Hanford Co., Richland, WA (USA)); Yancey, E.F. (Pacific Northwest Lab., Richland, WA (USA))

1990-01-01T23:59:59.000Z

383

DEVELOPING STATE POLICIES SUPPORTIVE OF BIOENERGY DEVELOPMENT  

DOE Green Energy (OSTI)

Working within the context of the Southern States Biobased Alliance (SSBA) and with officials in each state, the Southern States Energy Board (SSEB) is identifying bioenergy-related policies and programs within each state to determine their impact on the development, deployment or use of bioenergy. In addition, SSEB will determine which policies have impacted industry's efforts to develop, deploy or use biobased technologies or products. As a result, SSEB will work with the Southern States Biobased Alliance to determine how policy changes might address any negative impacts or enhance positive impacts. In addition to analysis of domestic policies and programs, this project will include the development of a U.S.-Brazil Biodiesel Pilot Project. The purpose of this effort is to promote and facilitate the commercialization of biodiesel and bioenergy production and demand in Brazil.

Kathryn Baskin

2005-01-31T23:59:59.000Z

384

DEVELOPING STATE POLICIES SUPPORTIVE OF BIOENERGY DEVELOPMENT  

DOE Green Energy (OSTI)

Working within the context of the Southern States Biobased Alliance (SSBA) and with officials in each state, the Southern States Energy Board (SSEB) is identifying bioenergy-related policies and programs within each state to determine their impact on the development, deployment or use of bioenergy. In addition, SSEB will determine which policies have impacted industry's efforts to develop, deploy or use biobased technologies or products. As a result, SSEB will work with the Southern States Biobased Alliance to determine how policy changes might address any negative impacts or enhance positive impacts. In addition to analysis of domestic policies and programs, this project will include the development of a U.S.-Brazil Biodiesel Pilot Project. The purpose of this effort is to promote and facilitate the commercialization of biodiesel and bioenergy production and demand in Brazil.

Kathryn Baskin

2004-10-31T23:59:59.000Z

385

DEVELOPING STATE POLICIES SUPPORTIVE OF BIOENERGY DEVELOPMENT  

DOE Green Energy (OSTI)

Working within the context of the Southern States Biobased Alliance (SSBA) and with officials in each state, the Southern States Energy Board (SSEB) is identifying bioenergy-related policies and programs within each state to determine their impact on the development, deployment or use of bioenergy. In addition, SSEB will determine which policies have impacted industry's efforts to develop, deploy or use biobased technologies or products. As a result, SSEB will work with the Southern States Biobased Alliance to determine how policy changes might address any negative impacts or enhance positive impacts. In addition to analysis of domestic policies and programs, this project will include the development of a U.S.-Brazil Biodiesel Pilot Project. The purpose of this effort is to promote and facilitate the commercialization of biodiesel and bioenergy production and demand in Brazil.

Kathryn Baskin

2005-04-30T23:59:59.000Z

386

DEVELOPING STATE POLICIES SUPPORTIVE OF BIOENERGY DEVELOPMENT  

DOE Green Energy (OSTI)

Working within the context of the Southern States Biobased Alliance (SSBA) and with officials in each state, the Southern States Energy Board (SSEB) is identifying bioenergy-related policies and programs within each state to determine their impact on the development, deployment or use of bioenergy. In addition, SSEB will determine which policies have impacted industry's efforts to develop, deploy or use biobased technologies or products. As a result, SSEB will work with the Southern States Biobased Alliance to determine how policy changes might address any negative impacts or enhance positive impacts. In addition to analysis of domestic policies and programs, this project will include the development of a U.S.-Brazil Biodiesel Pilot Project. The purpose of this effort is to promote and facilitate the commercialization of biodiesel and bioenergy production and demand in Brazil.

Kathryn Baskin

2004-07-28T23:59:59.000Z

387

DEVELOPING STATE POLICIES SUPPORTIVE OF BIOENERGY DEVELOPMENT  

DOE Green Energy (OSTI)

Working within the context of the Southern States Biobased Alliance (SSBA) and with officials in each state, the Southern States Energy Board (SSEB) is identifying bioenergy-related policies and programs within each state to determine their impact on the development, deployment or use of bioenergy. In addition, SSEB will determine which policies have impacted industry's efforts to develop, deploy or use biobased technologies or products. As a result, SSEB will work with the Southern States Biobased Alliance to determine how policy changes might address any negative impacts or enhance positive impacts.

Kathryn Baskin

2002-07-31T23:59:59.000Z

388

DEVELOPING STATE POLICIES SUPPORTIVE OF BIOENERGY DEVELOPMENT  

DOE Green Energy (OSTI)

Working within the context of the Southern States Biobased Alliance (SSBA) and with officials in each state, the Southern States Energy Board (SSEB) is identifying bioenergy-related policies and programs within each state to determine their impact on the development, deployment or use of bioenergy. In addition, SSEB will determine which policies have impacted industry's efforts to develop, deploy or use biobased technologies or products. As a result, SSEB will work with the Southern States Biobased Alliance to determine how policy changes might address any negative impacts or enhance positive impacts.

Kathryn Baskin

2003-01-15T23:59:59.000Z

389

DEVELOPING STATE POLICIES SUPPORTIVE OF BIOENERGY DEVELOPMENT  

DOE Green Energy (OSTI)

Working within the context of the Southern States Biobased Alliance (SSBA) and with officials in each state, the Southern States Energy Board (SSEB) is identifying bioenergy-related policies and programs within each state to determine their impact on the development, deployment or use of bioenergy. In addition, SSEB will determine which policies have impacted industry's efforts to develop, deploy or use biobased technologies or products. As a result, SSEB will work with the Southern States Biobased Alliance to determine how policy changes might address any negative impacts or enhance positive impacts.

Kathryn Baskin

2002-04-30T23:59:59.000Z

390

DEVELOPING STATE POLICIES SUPPORTIVE OF BIOENERGY DEVELOPMENT  

DOE Green Energy (OSTI)

Working within the context of the Southern States Biobased Alliance (SSBA) and with officials in each state, the Southern States Energy Board (SSEB) is identifying bioenergy-related policies and programs within each state to determine their impact on the development, deployment or use of bioenergy. In addition, SSEB will determine which policies have impacted industry's efforts to develop, deploy or use biobased technologies or products. As a result, SSEB will work with the Southern States Biobased Alliance to determine how policy changes might address any negative impacts or enhance positive impacts.

Kathryn Baskin

2002-11-01T23:59:59.000Z

391

DEVELOPING STATE POLICIES SUPPORTIVE OF BIOENERGY DEVELOPMENT  

DOE Green Energy (OSTI)

Working within the context of the Southern States Biobased Alliance (SSBA) and with officials in each state, the Southern States Energy Board (SSEB) is identifying bioenergy-related policies and programs within each state to determine their impact on the development, deployment or use of bioenergy. In addition, SSEB will determine which policies have impacted industry's efforts to develop, deploy or use biobased technologies or products. As a result, SSEB will work with the Southern States Biobased Alliance to determine how policy changes might address any negative impacts or enhance positive impacts.

Kathryn Baskin

2003-04-15T23:59:59.000Z

392

DEVELOPING STATE POLICIES SUPPORTIVE OF BIOENERGY DEVELOPMENT  

SciTech Connect

Working within the context of the Southern States Biobased Alliance (SSBA) and with officials in each state, the Southern States Energy Board (SSEB) is identifying bioenergy-related policies and programs within each state to determine their impact on the development, deployment or use of bioenergy. In addition, SSEB will determine which policies have impacted industry's efforts to develop, deploy or use biobased technologies or products. As a result, SSEB will work with the Southern States Biobased Alliance to determine how policy changes might address any negative impacts or enhance positive impacts.

Kathryn Baskin

2003-01-15T23:59:59.000Z

393

DEVELOPING STATE POLICIES SUPPORTIVE OF BIOENERGY DEVELOPMENT  

SciTech Connect

Working within the context of the Southern States Biobased Alliance (SSBA) and with officials in each state, the Southern States Energy Board (SSEB) is identifying bioenergy-related policies and programs within each state to determine their impact on the development, deployment or use of bioenergy. In addition, SSEB will determine which policies have impacted industry's efforts to develop, deploy or use biobased technologies or products. As a result, SSEB will work with the Southern States Biobased Alliance to determine how policy changes might address any negative impacts or enhance positive impacts.

Kathryn Baskin

2003-10-31T23:59:59.000Z

394

DEVELOPING STATE POLICIES SUPPORTIVE OF BIOENERGY DEVELOPMENT  

SciTech Connect

Working within the context of the Southern States Biobased Alliance (SSBA) and with officials in each state, the Southern States Energy Board (SSEB) is identifying bioenergy-related policies and programs within each state to determine their impact on the development, deployment or use of bioenergy. In addition, SSEB will determine which policies have impacted industry's efforts to develop, deploy or use biobased technologies or products. As a result, SSEB will work with the Southern States Biobased Alliance to determine how policy changes might address any negative impacts or enhance positive impacts.

Kathryn Baskin

2003-04-15T23:59:59.000Z

395

DEVELOPING STATE POLICIES SUPPORTIVE OF BIOENERGY DEVELOPMENT  

DOE Green Energy (OSTI)

Working within the context of the Southern States Biobased Alliance (SSBA) and with officials in each state, the Southern States Energy Board (SSEB) is identifying bioenergy-related policies and programs within each state to determine their impact on the development, deployment or use of bioenergy. In addition, SSEB will determine which policies have impacted industry's efforts to develop, deploy or use biobased technologies or products. As a result, SSEB will work with the Southern States Biobased Alliance to determine how policy changes might address any negative impacts or enhance positive impacts.

Kathryn Baskin

2004-04-30T23:59:59.000Z

396

DEVELOPING STATE POLICIES SUPPORTIVE OF BIOENERGY DEVELOPMENT  

DOE Green Energy (OSTI)

Working within the context of the Southern States Biobased Alliance (SSBA) and with officials in each state, the Southern States Energy Board (SSEB) is identifying bioenergy-related policies and programs within each state to determine their impact on the development, deployment or use of bioenergy. In addition, SSEB will determine which policies have impacted industry's efforts to develop, deploy or use biobased technologies or products. As a result, SSEB will work with the Southern States Biobased Alliance to determine how policy changes might address any negative impacts or enhance positive impacts.

Kathryn Baskin

2003-10-31T23:59:59.000Z

397

Essays in development economics  

E-Print Network (OSTI)

Chapter 1 looks at the empirical estimation of the welfare impacts of bargaining. Bargaining for retail goods is common in developing countries, but rare in the developed world. The welfare implications of this difference ...

Keniston, Daniel Eben

2011-01-01T23:59:59.000Z

398

China Business Development  

E-Print Network (OSTI)

China Business Development Postgraduate Programme #12;Programme: China Business Development with China: Intercultural Management 3 1 Daily life and business behaviour explained from a cultural perspective Chinese strategic thinking China's political constellation and its impact on business life Human

Steels, Luc

399

Biodiesel SRM Development  

Science Conference Proceedings (OSTI)

... and Industrial Quality (INMETRO) on the development of the certified reference materials (CRMs) for biofuels, specifically bioethanol and biodiesel ...

2013-02-11T23:59:59.000Z

400

Cooperative method development  

Science Conference Proceedings (OSTI)

The development of methods tools and process improvements is best to be based on the understanding of the development practice to be supported. Qualitative research has been proposed as a method for understanding the social and cooperative aspects of ... Keywords: Cooperative method development, D.2.9 [Software]: Software Engineering --- Management, Empirical research, Human factors, Research methodology, Software engineering

Yvonne Dittrich; Kari Rnkk; Jeanette Eriksson; Christina Hansson; Olle Lindeberg

2008-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "hydrothermal gea development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Mechanisms in Plant Development  

SciTech Connect

This meeting has been held every other year for the past twenty-two years and is the only regularly held meeting focused specifically on plant development. Topics covered included: patterning in developing tissues; short and long distance signaling; differentiation of cell types; the role of epigenetics in development; evolution; growth.

Hake, Sarah [USDA ARS Plant Gene Expression Center

2013-08-21T23:59:59.000Z

402

PHOTOGRAPHIC FILM DEVELOPER  

DOE Patents (OSTI)

S>An improved photographic developer is presented having very high energy development fine grain characteristics and a long shelf life. These characteristics are obtained by the use of aminoacetic acid in the developer, the other constituents of which are: sodium sulfite, hydroquinone, sodiunn borate, boric acid and potassium bromide, 1-phenyl-3-pyrazolidone.

Berry, F.G.

1958-06-24T23:59:59.000Z

403

Community Development Block Grant/Economic Development Infrastructure...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

GrantEconomic Development Infrastructure Financing (CDBGEDIF) (Oklahoma) Community Development Block GrantEconomic Development Infrastructure Financing (CDBGEDIF) (Oklahoma) <...

404

Geothermal Energy Development in the Eastern United States. Final Report  

DOE Green Energy (OSTI)

This document represents the final report from the Applied Physics Laboratory (APL) of The Johns Hopkins University on its efforts on behalf of the Division of Geothermal Energy (DGE) of the Department of Energy (DOE). For the past four years, the Laboratory has been fostering development of geothermal energy in the Eastern United States. While the definition of ''Eastern'' has changed somewhat from time to time, basically it means the area of the continental United States east of the Rocky Mountains, plus Puerto Rico but excluding the geopressured regions of Texas and Louisiana. During these years, the Laboratory developed a background in geology, hydrology, and reservoir analysis to aid it in establishing the marketability of geothermal energy in the east. Contrary to the situation in the western states, the geothermal resource in the east was clearly understood to be inferior in accessible temperature. On the other hand, there were known to be copious quantities of water in various aquifers to carry the heat energy to the surface. More important still, the east possesses a relatively dense population and numerous commercial and industrial enterprises, so that thermal energy, almost wherever found, would have a market. Thus, very early on it was clear that the primary use for geothermal energy in the east would be for process heat and space conditioning--heating and cool electrical production was out of the question. The task then shifted to finding users colocated with resources. This task met with modest success on the Atlantic Coastal Plain. A great deal of economic and demographic analysis pinpointed the prospective beneficiaries, and an intensive ''outreach'' campaign was mounted to persuade the potential users to invest in geothermal energy. The major handicaps were: (1) The lack of demonstrated hydrothermal resources with known temperatures and expected longevity; and (2) The lack of a ''bellwether'' installation for entrepreneurs to see, touch, and emulate. It is only at the present time that these two issues appear to be on the way to resolution by DGE user-coupled programs in the east.

None

1981-10-01T23:59:59.000Z

405

Cooperative Research and Development Agreements  

Science Conference Proceedings (OSTI)

... Principal Investigator develops a Statement of ... a consortium to develop the technology ... DEVELOPING STANDARD REQUIREMENTS FOR FATIGUE ...

2013-07-10T23:59:59.000Z

406

Individual Development Plan (IDP)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Individual Development Plan (IDP) Individual Development Plan (IDP) SAMPLE 10/01/2012 to 09/30/2013 Training Reason Developmental Activity Description Training Cost Travel Cost Total Cost Hours Start Date/ Completion Date Short Range Goal 1: Enhance Leadership Skills Development Mentoring Receive mentoring from a higher grade employee (s) and provide mentoring to lower grade employee(s). 0 0 0 TBD 1/1/2013 Development Instructor led EM Leadership Excellence Program - Interpersonal Communication Skills 0 0 0 8 6/15/2013 Development Instructor led Federal Executive Institute (OPM): Leadership for a Democratic Society $18,300 0 0 30 day residential TBD Development Shadowing Shadow one or more SES employees for one or two day period to learn leadership techniques. 0 0 0 TBD TBD

407

Semantic Developer | Data.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

Semantic Developer Developer Data Web Services Source Code Challenges Semantic Web Blogs Let's Talk Developers You are here Data.gov Communities Developers As the Semantic...

408

the Regional Development Corporation  

NLE Websites -- All DOE Office Websites (Extended Search)

carry out this work, CPO partners carry out this work, CPO partners with the Los Alamos National Laboratory Foundation for education, the Regional Development Corporation for economic development, and the regional United Way organizations for community giving. Education Los Alamos National Security (LANS) invests more than $1 million each year to enhance regional educational opportunities in science, technology, engineering, and math (STEM) education. Education Focus Areas Our education commitments address four focus areas: * Workforce Development * Student Internships * Teacher and Faculty Professional Development * Public Understanding of Science In 2011, more than 1,100 students

409

Economic Development and Pollutants.  

E-Print Network (OSTI)

?? The purpose of this paper is to investigate the correlation of economic development and pollutants in Brazil from 1960 to 2008. This investigation is (more)

Trnros, Sara

2013-01-01T23:59:59.000Z

410

Workforce Development & Education  

NLE Websites -- All DOE Office Websites (Extended Search)

Player to see images here. Welcome to Workforce Development & Education K-12 StudentsSchools High School Students Teachers Undergraduate & Graduate StudentsFaculty Berkeley Lab...

411

Resources for Program Development  

NLE Websites -- All DOE Office Websites (Extended Search)

may assist those who are developing programs to enhance the knowledge and skills of mathematics, science and technology teachers and provide opportuntities for students to...

412

Technology Development Loans (Wisconsin)  

Energy.gov (U.S. Department of Energy (DOE))

Technology Development Loans help innovative companies with promising economic futures clear the hurdles associated with bringing new technologies, products, and concepts to market. Loan funds...

413

Energy Education & Workforce Development  

NLE Websites -- All DOE Office Websites (Extended Search)

I. Introduction of the Energy Literacy and Energy 101 Initiatives -Michelle Fox & Matt Garcia II. Energy 101 Curricular Framework Development - Jim Turner III. Energy 101...

414

Alloy Development and Applications  

Science Conference Proceedings (OSTI)

... Gerald Bourne2; Joseph Jankowski2; 1Boeing; 2Colorado School of Mines; .... development of conventional superalloys has relied on the addition of heavy...

415

The Geothermal Technologies Office Congratulates this Year's ...  

The Geothermal Technologies Office Congratulates this Year's GEA Honors Awardees. December 11, 2013. On December 10, the Geothermal Energy Association ...

416

Hydrothermal alteration mineral mapping using hyperspectral imagery...  

Open Energy Info (EERE)

front of the Stillwater Mountain Range inDixie Valley, Nevada. Analysis of this data set reveals that severaloutcrops of these altered minerals exist in the area, and thatone...

417

Adventive Hydrothermal Circulation On Stromboli Volcano (Aeolian...  

Open Energy Info (EERE)

(SP), CO2 soil diffuse degassing and soil temperature surveys. This complementary data set revealed the presence of an anomalous conductive body, probably related to a shallow...

418

Mapping Hydrothermal Upwelling and Outflow Zones: Preliminary...  

Open Energy Info (EERE)

from Two-Meter Temperature Data and Geologic Analysis at Lee Allen Springs and Salt Wells Basin Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference...

419

Hydrothermal alkali metal catalyst recovery process  

DOE Patents (OSTI)

In a coal gasification operation or similar conversion process carried out in the presence of an alkali metal-containing catalyst wherein solid particles containing alkali metal residues are produced, alkali metal constituents are recovered from the particles primarily in the form of water soluble alkali metal formates by treating the particles with a calcium or magnesium-containing compound in the presence of water at a temperature between about 250.degree. F. and about 700.degree. F. and in the presence of added carbon monoxide. During the treating process the water insoluble alkali metal compounds comprising the insoluble alkali metal residues are converted into water soluble alkali metal formates. The resultant aqueous solution containing water soluble alkali metal formates is then separated from the treated particles and any insoluble materials formed during the treatment process, and recycled to the gasification process where the alkali metal formates serve as at least a portion of the alkali metal constituents which comprise the alkali metal-containing catalyst. This process permits increased recovery of alkali metal constituents, thereby decreasing the overall cost of the gasification process by reducing the amount of makeup alkali metal compounds necessary.

Eakman, James M. (Houston, TX); Clavenna, LeRoy R. (Baytown, TX)

1979-01-01T23:59:59.000Z

420

207- Hydrothermal Synthesis and Characterization of Cadmium ...  

Science Conference Proceedings (OSTI)

125- Influence of Gas Flow Rate Ratio on the Structural Properties of a-SiC:H Prepared by ... 145- The Synergy of XRD and XRF in a Shale and Slate Analysis.

Note: This page contains sample records for the topic "hydrothermal gea development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Comparison Of Hydrothermal Alteration Of Carboniferous Carbonate...  

Open Energy Info (EERE)

Login | Sign Up Wiki Browse Latinoamrica Buildings Clean Energy Economy Coordinated Low Emissions Assistance Network Geothermal Incentives and Policies International Clean Energy...

422

Geothermal Technologies Office: Hydrothermal and Resource Confirmation  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

and Renewable Energy EERE Home | Programs & Offices | Consumer Information Geothermal Technologies Office Search Search Help Geothermal Technologies Office HOME ABOUT...

423

The fate of lignin during hydrothermal pretreatment  

E-Print Network (OSTI)

straw pretreated for bioethanol production. Biotechnologyof woody biomass for bioethanol production. Bioresources

Trajano, Heather L; Engle, Nancy L; Foston, Marcus; Ragauskas, Arthur J; Tschaplinski, Timothy J; Wyman, Charles E

2013-01-01T23:59:59.000Z

424

Organic geochemical biosignatures in alkaline Hydrothermal ecosystems  

E-Print Network (OSTI)

The 13C content of microbial products are controlled by many factors, including the 13C content of the growth substrate, growth rate, the flux of carbon through various parts of the biochemical network, and the isotopic ...

Bradley, Alexander Smith

2008-01-01T23:59:59.000Z

425

Hydrothermal Exploration Best Practices and Geothermal Knowledge...  

Open Energy Info (EERE)

interviews were conducted with exploration experts with both geothermal and oil-and-gas industry experience to identify the exploration challenges and best practices for the...

426

Dielectric Constant of Hydrothermal Barium Titanate Powders  

Science Conference Proceedings (OSTI)

Opacified, Reinforced Aerogel for Thermal Insulation of Thermoelectric Generators and Other Advanced Energy Systems Oxide Ceramic Materials for...

427

Definition: Hydrothermal Systems | Open Energy Information  

Open Energy Info (EERE)

geological formation for the production of electricity.1 References http:www1.eere.energy.govgeothermalpdfshydrothermalfactsheet.pdf Ret LikeLike UnlikeLike You like...

428

The fate of lignin during hydrothermal pretreatment  

NLE Websites -- All DOE Office Websites (Extended Search)

provided the original work is properly cited. Trajano et al. Biotechnology for Biofuels 2013, 6:110 http:www.biotechnologyforbiofuels.comcontent61110 The primary...

429

The fate of lignin during hydrothermal pretreatment  

E-Print Network (OSTI)

et al. Biotechnology for Biofuels 2013, 6:110 http://as a feedstock for biofuels: a review of compositionalcharacteristics. Biofuels Bioprod Bior 2010, 6. Albersheim

Trajano, Heather L; Engle, Nancy L; Foston, Marcus; Ragauskas, Arthur J; Tschaplinski, Timothy J; Wyman, Charles E

2013-01-01T23:59:59.000Z

430

Hydrothermal Aging of Polypropylene Syntactic Foams  

Science Conference Proceedings (OSTI)

Abstract Scope, Syntactic foams are currently used in a variety of offshore applications in the oil and gas ... Structural Health Monitoring of Wind Turbine Blades.

431

The fate of lignin during hydrothermal pretreatment  

E-Print Network (OSTI)

Louis, MO 63130, USA. 6 BioEnergy Science Center, Oak Ridgeand enzymatic hydrolysis. Bioenergy Research 2013, 6:211Riverside, CA 92507, USA BioEnergy Science Center, Oak Ridge

Trajano, Heather L; Engle, Nancy L; Foston, Marcus; Ragauskas, Arthur J; Tschaplinski, Timothy J; Wyman, Charles E

2013-01-01T23:59:59.000Z

432

Diagenesis and porosity development associated with major sea level fluctuations, Upper Permian, Jameson land, east Greenland  

SciTech Connect

The Upper Permian of Jameson Land includes two major carbonate sequences, represented by the Karstryggen and Wegener Halvoe formations. The initial Karstryggen transgression led to the development of a shallow marine platform with structurally controlled evaporite basins (salinas) separated by stromatolitic, peloidal, or micritic carbonate depositional areas. The Wegener Havloe sequence reflects more rapid and extensive transgression with the deposition of three subcycles of fully marine, platform, or biohermal carbonates containing minor evaporites near the basin margins. Bioherms (bryozoan-brachiopod-marine cement mounds) show > 100 m of relief, indicating that large relative sea level changes were involved. Both the Karstryggen and Wgener Havloe cycles were terminated by major regressions, which led to karstic and/or fluvial incision of the underlying sequences. Not surprisingly, carbonate and evaporite diagenesis was greatly affected by these regional or eustatic sea level fluctuations. Evaporites dissolved or were replaced by calcite and celestite under the influence of meteoric waters. Limestones show collapse brecciation, grain leaching, soil development, and characteristic vadose and phreatic cements. Most significantly meteoric flushing led to massive dissolution of botryoidal marine cements (aragonite and probable high-Mg calcite) within biohermal facies on the Wegener Peninsula. This early porosity resurrection led to the preservation of porous bioherm core zones until hydrocarbon migration. Only late (posthydrocarbon), probably hydrothermal fluid flow led to cementation of the bioherm cores while expelling most of the reservoired hydrocarbons. If the sea level changes affecting the Greenlandic Permian are eustatic, then this study may provide significant clues to porosity development throughout the largely unexplored northern Zechstein basin.

Scholle, P.A.; Ulmer, D.S. (Southern Methodist Univ., Dallas, TX (USA)); Stemmerik, L. (Greenland Geological Survey, Copenhagen (Denmark))

1990-05-01T23:59:59.000Z

433

Graphite technology development plan  

Science Conference Proceedings (OSTI)

This document presents the plan for the graphite technology development required to support the design of the 350 MW(t) Modular HTGR within the US National Gas-Cooled Reactor Program. Besides descriptions of the required technology development, cost estimates, and schedules, the plan also includes the associated design functions and design requirements.

NONE

1986-07-01T23:59:59.000Z

434

Wind Economic Development (Postcard)  

DOE Green Energy (OSTI)

The U.S. Department of Energy's Wind Powering America initiative provides information on the economic development benefits of wind energy. This postcard is a marketing piece that stakeholders can provide to interested parties; it will guide them to the economic development benefits section on the Wind Powering America website.

Not Available

2011-08-01T23:59:59.000Z

435

Technical Assistance to Developers  

DOE Green Energy (OSTI)

This task supports the allowance of technical assistance to fuel-cell component and system developers as directed by the DOE. This task includes testing of novel materials and participation in the further development and validation of single cell test protocols. This task also covers technical assistance to DOE Working Groups, the U.S. Council for Automotive Research (USCAR) and the USCAR/DOE Driving Research and Innovation for Vehicle efficiency and Energy sustainability (U.S. Drive) Fuel Cell Technology Team. Assistance includes technical validation of new fuel cell materials and methods, single cell fuel cell testing to support the development of targets and test protocols, and regular advisory participation in other working groups and reviews. This assistance is made available to PEM fuel cell developers by request and DOE Approval. The objectives are to: (1) Support technically, as directed by DOE, fuel cell component and system developers; (2) Assess fuel cell materials and components and give feedback to developers; (3) Assist the DOE Durability Working Group with the development of various new material durability Testing protocols; and (4) Provide support to the U.S. Council for Automotive Research (USCAR) and the USCAR/DOE Fuel Cell Technology Team. FY2012 specific technical objectives are: (1) Evaluate novel MPL materials; (2) Develop of startup/ shutdown protocol; (3) Test the impact of hydrophobic treatment on graphite bi-polar plates; (4) Perform complete diagnostics on metal bi-polar plates for corrosion; and (5) Participate and lead efforts in the DOE Working Groups.

Rockward, Tommy [Los Alamos National Laboratory; Borup, Rodney L. [Los Alamos National Laboratory; Garzon, Fernando H. [Los Alamos National Laboratory; Mukundan, Rangachary [Los Alamos National Laboratory; Spernjak, Dusan [Los Alamos National Laboratory

2012-07-17T23:59:59.000Z

436

NERSC Science Gateway Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Design Forward Design Forward Home » R & D » Science Gateway Development Science Gateway Development Science gateways are conduits for bringing HPC to the web. NERSC assists in the development and hosting of gateways that make NERSC compute and data resources more broadly useful. To ease the development of these gateways, the NERSC Web Toolkit (NEWT) makes science gateways accessible to anyone familiar with HTML and javascript. You can find more detailed information about science gateway development in the related NERSC user documentation and at the NEWT website. What are some use cases? A science gateway can be tailored to the needs within a team of researchers allowing them to share data, simulation results, and information among users who may be geographically distributed.

437

Innovation Ecosystem Development Initiative  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Innovation Ecosystem Development Initiative Innovation Ecosystem Development Initiative Funding Opportunity Number DE-FOA-0000356 Applicant (Legal Name) University of Utah Technology Commercialization Office Location: Salt Lake City, UT Project Title Energy Innovation Commercialization Center Proposed Action or Project Description The project proposes to create an Energy Innovation Commercialization Center at the University of Utah. The scope of work for this project is in two phases: tasks necessary to create the Center and actual commercialization and outreach to other institutions. Specific activities for Phase I for the Center startup include 1) negotiating contract, prepare correspondence, establishing website, meetings, scheduling activities, developing metrics, and designing and creating a database. Phase 2 activities for Center

438

CONTENTS Developing Alaskan Arctic  

NLE Websites -- All DOE Office Websites (Extended Search)

Developing Alaskan Arctic Developing Alaskan Arctic Potential ...........................................1 Commentary ...................................2 NETL Develops Strategic Partnership with the Alaska Center for Energy and Power ...8 Deepwater and Ultra-Deepwater Produced Water Discharge ....10 Intelligent Production System for Ultra Deepwater with Short Hop Wireless Power and Wireless Data Transfer .........................................16 Snapshots ......................................19 CONTACTS Roy Long Technology Manager Ultra-Deepwater/Offshore 304-285-4479 roy.long@netl.doe.gov Ray Boswell Technology Manager Natural Gas Technology R&D 412-386-7614 ray.boswell@netl.doe.gov Eric Smistad Technology Manager Oil Technology R&D 281-494-2619 eric.smistad@netl.doe.gov

439

Microsystem Product Development  

E-Print Network (OSTI)

Over the last decade the successful design and fabrication of complex MEMS (MicroElectroMechanical Systems), optical circuits and ASICs have been demonstrated. Packaging and integration processes have lagged behind MEMS research but are rapidly maturing. As packaging processes evolve, a new challenge presents itself, microsystem product development. Product development entails the maturation of the design and all the processes needed to successfully produce a product. Elements such as tooling design, fixtures, gages, testers, inspection, work instructions, process planning, etc., are often overlooked as MEMS engineers concentrate on design, fabrication and packaging processes. Thorough, up-front planning of product development efforts is crucial to the success of any project.

Polosky, M -A

2007-01-01T23:59:59.000Z

440

Research and Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Research and Development Research and Development The Environmental Energy Technologies Division performs analysis, research, and development leading to better energy technologies and reduction of adverse energy-related environmental impacts. The Division carries out research on batteries and fuel cells, electricity grid technologies, energy-efficient building technologies; energy analysis; environmental impacts of energy use, including on air quality and climate, indoor environmental quality, and sensors and materials for energy applications. Batteries and Fuel Cells Advanced energy technologies for low-cost rechargeable advanced electrochemical batteries and fuel cells for automotive and stationary applications. Buildings Energy Efficiency Working with industry to develop technologies for buildings that increase energy efficiency, and improve the comfort, health and safety of building occupants.

Note: This page contains sample records for the topic "hydrothermal gea development" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Sustaining development in Detroit  

E-Print Network (OSTI)

The intent of this thesis is to propose a strategy for stabilizing and increasing the disparate pieces of development that form the traces of the once great industrial city of Detroit. It focuses primarily on Fordism as a ...

Resnick, Noah Samuel, 1977-

2004-01-01T23:59:59.000Z

442

DC Conductor Development  

Science Conference Proceedings (OSTI)

This report describes the conceptual development of promising conductors and line configurations for HVDC overhead transmission lines. It details analytic and experimental work conducted to determine the performance of the proposed concepts and ranks the most promising concepts.

1982-02-01T23:59:59.000Z

443

Development Opportunity Zone Credit  

Energy.gov (U.S. Department of Energy (DOE))

The Development Opportunity Zone Credits incent new and expanding businesses in the Cities of Beloit, Janesville and Kenosha by providing non-refundable tax credits to assist with the creation and...

444

Feature - Argonne Develops ARDAQ  

NLE Websites -- All DOE Office Websites (Extended Search)

lab's capability to analyze and evaluate the performance of prototype plug-in hybrid electric vehicles (PHEV) with the development of a tool called the Argonne Real-Time Data...

445

COMMISSION REPORT DEVELOPING RENEWABLE  

E-Print Network (OSTI)

incorporate the market transformation goal described above and "develop milestones to measure progress towards plus: SILVER Bronze plus: BRONZE Stringency/EnergySavings Interim milestones for this programmatic goal

446

Community Development Fund (Illinois)  

Energy.gov (U.S. Department of Energy (DOE))

The Community Development Fund is a partnership between the Illinois Department of Commerce and Economic Opportunity (DCEO) and financial institutions. Up to $5 million in micro loans is available...

447

PNNL: Economic Development Office  

NLE Websites -- All DOE Office Websites (Extended Search)

business looking for a door to the Laboratory? The Economic Development Office at PNNL is here to help you start, grow, or relocate your business. We help you tap into...

448

Advanced Interconnect Development  

DOE Green Energy (OSTI)

The objectives of this project are to develop cost-effective, optimized materials for intermediate temperature SOFC interconnect and interconnect/electrode interface applications and identify and understand degradation processes in interconnects and at their interfaces with electrodes.

Yang, Z.G.; Maupin, G.; Simner, S.; Singh, P.; Stevenson, J.; Xia, G.

2005-01-27T23:59:59.000Z

449

Essays on development finance  

E-Print Network (OSTI)

This thesis consists of three essays that examine investment choices in less developed countries. Chapter 1 examines how the structure of existing microfinance contracts may discourage risky but high-expected return ...

Fischer, Gregory M. (Gregory Mark)

2008-01-01T23:59:59.000Z

450

Political elites and development  

E-Print Network (OSTI)

This dissertation consists of three essays on the behavior of political elites and their effect on economic development. The first two chapters focus on political dynasties in the Philippines while the third chapter analyzes ...

Querubn Borrero, Pablo

2010-01-01T23:59:59.000Z

451

Review: 1991 industry developments  

Science Conference Proceedings (OSTI)

This is NUEXCO`s annual summary of the previous year`s (1991) events. There are reviews of major nuclear developments in each continent, as well as international developments. Specific topics include fuels, waste management, new facilities, and decommissioning. Nuclear activities in the following countries are noted: South Africa, Yemen, Lithuania, Latvia, Estonia, Namibia, France, Japan, Taiwan, China, Korea, India, Pakistan, Federal Republic of Germany, Spain, Hungary, Kazakhstan, Italy, Czechoslovakia, United Kingdom, Switzerland, Canada, USA, Argentina, Brazil, and Uraguay.

NONE

1992-01-01T23:59:59.000Z

452

Customer Communications Architecture Development  

Science Conference Proceedings (OSTI)

This study outlines a process for integrating requirements for the Smart Grid from representative sources and provides a structure for categorizing requirements. The process then provides an approach to the development of a tool that can be used for evaluating current and emerging standards as well as products in the marketplace. Significantly the work draws from bodies of work that have been developed by the energy industry. The results are a set of requirements metrics that can be built upon and used ...

2010-12-31T23:59:59.000Z

453

SES CANDIDATE DEVELOPMENT PROGRAM  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

3 3 (11-03) SENIOR EXECUTIVE SERVICE CANDIDATE DEVELOPMENT PROGRAM (SESCDP) Developmental Assignment Opportunity DATE: NAME OF SES CANDIDATE: TITLE: ASSIGNMENT NUMBER: ASSIGNMENT BEGINS: ENDS: TELEPHONE NUMBER: FAX NUMBER: EMAIL ADDRESS: ASSIGNMENT LOCATION HOST ORGANIZATION: PURPOSE OF ASSIGNMENT: ASSIGNMENT POSITION: ASSIGNMENT DUTIES: EXECUTIVE COR QUALIFICATIONS TO BE ADDRESSED: OFFICE ADDRESS: TELEPHONE NUMBER: FAX NUMBER: E-MAIL ADDRESS: 1 U.S. DEPARTMENT OF ENERGY SENIOR EXECUTIVE SERVICE CANDIDATE DEVELOPMENT PROGRAM (SESCDP)

454

from Wind Energy Development  

E-Print Network (OSTI)

These comments are submitted on behalf of the Clean Energy State Alliance (CESA) (electronically and by mail). CESA is a non-profit, multi-state coalition of state clean energy funds and programs working together to develop and promote clean energy technologies. CESA seeks to identify and address barriers to the development and growth of viable renewable energy resources in the United States. The California Energy Commission is a member of CESA. CESA offers its assistance and resources to the Commission and staff in the guidelines development process. CESA has substantial experience and expertise on the avian protection and wind siting issues that the Commission will consider in this Docket. Most notably, CESA is working actively with the United States Fish & Wildlife Service (USFWS), the Minerals Management Service, and several states (Pennsylvania, New York, Vermont, and others) to develop reasonable and effective approaches to addressing the impacts of wind projects on avian species. Many of the issues that the Commission will consider in this Docket are also being addressed by other states and federal agencies. CESA is available to provide relevant information and approaches that these other agencies and guidance development processes are employing, developing, and/or evaluating.

Dockets Office Ms; Dear Commissioners

2006-01-01T23:59:59.000Z

455

SRL online Analytical Development  

DOE Green Energy (OSTI)

The Savannah River Site is operated by the Westinghouse Savannah River Co. for the Department of Energy to produce special nuclear materials for defense. R&D support for site programs is provided by the Savannah River Laboratory, which I represent. The site is known primarily for its nuclear reactors, but actually three fourths of the efforts at the site are devoted to fuel/target fabrication, fuel/target reprocessing, and waste management. All of these operations rely heavily on chemical processes. The site is therefore a large chemical plant. There are then many potential applications for process analytical chemistry at SRS. The Savannah River Laboratory (SRL) has an Analytical Development Section of roughly 65 personnel that perform analyses for R&D efforts at the lab, act as backup to the site Analytical Laboratories Department and develop analytical methods and instruments. I manage a subgroup of the Analytical Development Section called the Process Control & Analyzer Development Group. The Prime mission of this group is to develop online/at-line analytical systems for site applications.

Jenkins, C.W.

1991-12-31T23:59:59.000Z

456

SRL online Analytical Development  

DOE Green Energy (OSTI)

The Savannah River Site is operated by the Westinghouse Savannah River Co. for the Department of Energy to produce special nuclear materials for defense. R D support for site programs is provided by the Savannah River Laboratory, which I represent. The site is known primarily for its nuclear reactors, but actually three fourths of the efforts at the site are devoted to fuel/target fabrication, fuel/target reprocessing, and waste management. All of these operations rely heavily on chemical processes. The site is therefore a large chemical plant. There are then many potential applications for process analytical chemistry at SRS. The Savannah River Laboratory (SRL) has an Analytical Development Section of roughly 65 personnel that perform analyses for R D efforts at the lab, act as backup to the site Analytical Laboratories Department and develop analytical methods and instruments. I manage a subgroup of the Analytical Development Section called the Process Control Analyzer Development Group. The Prime mission of this group is to develop online/at-line analytical systems for site applications.

Jenkins, C.W.

1991-01-01T23:59:59.000Z

457

Emergency Response Guideline Development  

SciTech Connect

Task 5 of the collaborative effort between ORNL, Brazil, and Westinghouse for the International Nuclear Energy Research Initiative entitled Development of Advanced Instrumentation and Control for an Integrated Primary System Reactor focuses on operator control and protection system interaction, with particular emphasis on developing emergency response guidelines (ERGs). As in the earlier tasks, we will use the IRIS plant as a specific example of an integrated primary system reactor (IPSR) design. The present state of the IRIS plant design specifically, the lack of a detailed secondary system design precludes establishing detailed emergency procedures at this time. However, we can create a structure for their eventual development. This report summarizes our progress to date. Section 1.2 describes the scope of this effort. Section 2 compares IPSR ERG development to the recent AP1000 effort, and identifies three key plant differences that affect the ERGs and control room designs. The next three sections investigate these differences in more detail. Section 3 reviews the IRIS Safety-by-Design philosophy and its impact on the ERGs. Section 4 looks at differences between the IRIS and traditional loop PWR I&C Systems, and considers their implications for both control room design and ERG development. Section 5 examines the implications of having one operating staff control multiple reactor units. Section 6 provides sample IRIS emergency operating procedures (EOPs). Section 7 summarizes our conclusions.

Gary D. Storrick

2007-09-30T23:59:59.000Z

458

ORISE: Health Literacy Development  

NLE Websites -- All DOE Office Websites (Extended Search)

Literacy Development Literacy Development While health disparities may be attributed to a number of factors, health literacy development and access to health information can help special populations gain a better understanding of wellness and prevention. The Internet and other means of electronic communication have become popular tools that are allowing people to take control of their health. According to Healthy People 2010, nearly half of American adults (90 million people) are deemed "health illiterate"-an increasing problem among special populations that appears to contribute to health disparities. Health literacy refers to the ability to read and understand materials related to personal health, as well as navigate the health system. To assist government agencies and organizations educate populations facing

459

Guidebook on biogas development  

Science Conference Proceedings (OSTI)

This guidebook covers the practical aspects of small-scale biogas development suitable for use in rural areas in developing countries, especially those of the ESCAP region. It is intended that all aspects of biogas are covered so that someone with no knowledge of the subject can, with confidence, design, build, operate and maintain a biogas plant. Information on biogas technology in China is also included. Chapters cover: the biogas process; factors effecting gas-plant design and operation; the classification and design principles of plants; design, size and site selection; the construction of digesters; gas holders and pipes; household gas appliances and their use; starting and operating a biogas digester; servicing and safety; improving gas-plant performance; commercial uses of biogas; the effluent and its uses, biogas-plant development programmes; community plants; and economics. In the annexes, designs for biogas plants of the fixed-dome, bag and floating gas-holder type are presented. 9 references.

Not Available

1980-01-01T23:59:59.000Z

460

Assignment #1: Developing Algorithms  

E-Print Network (OSTI)

The purpose of this assignment is to give you some experience developing algorithms. According to Wikipedia, an algorithm is a finite list of well-defined instructions for accomplishing some task that, given an initial state, will terminate in a defined end-state [1]. 1. Consider the following initial state: A bag containing sliced bread A jar containing peanut butter A jar containing jelly A plastic knife Develop an algorithm for producing, as an end-state, a peanut butter and jelly sandwich. Be as precise as possible when developing your list of instructions. 2 Hand-In Instructions The assignment is due at the start of class on August 27 th. You are required to turn in a typed document. The document should include your name, your username, the date, the course number, and the assignment number. For example:

Andrew R. Dalton; Andy Dalton (adalton

2007-01-01T23:59:59.000Z