Powered by Deep Web Technologies
Note: This page contains sample records for the topic "geothermal system cxs" 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.


1

Enhanced Geothermal Systems (EGS) - the Future of Geothermal...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Enhanced Geothermal Systems (EGS) - the Future of Geothermal Energy Enhanced Geothermal Systems (EGS) - the Future of Geothermal Energy October 28, 2013 - 12:00am Addthis While the...

2

National Geothermal Data System (NGDS) Geothermal Data Domain...  

Open Energy Info (EERE)

Data System (NGDS) Geothermal Data Domain: Assessment of Geothermal Community Data Needs Abstract To satisfy the critical need for geothermal data to advance geothermal energy as...

3

Enhanced Geothermal Systems  

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

Below are the project presentations and respective peer review results for Engineered Geothermal Systems, Low Temperature and Exploration Demonstration Projects.

4

Engineered Geothermal Systems.  

E-Print Network (OSTI)

?? Different concepts for Enhanced Geothermal Systems (EGS) are presented and evaluated according to their potential for medium to large scale power production in Norwegian… (more)

Drange, Lars Anders

2011-01-01T23:59:59.000Z

5

Geothermal: Sponsored by OSTI -- NATIONAL GEOTHERMAL DATA SYSTEM...  

Office of Scientific and Technical Information (OSTI)

SYSTEM (NGDS) GEOTHERMAL DATA DOMAIN: ASSESSMENT OF GEOTHERMAL COMMUNITY DATA NEEDS Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log On Home...

6

Sedimentary Geothermal Systems | Open Energy Information  

Open Energy Info (EERE)

Sedimentary Geothermal Systems Sedimentary Geothermal Systems Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Geopressured Geothermal 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 Sedimentary Geothermal Links Related documents and websites Estimate of the Geothermal Energy Resource in the Major Sedimentary Basins in the United States Recoverable Resource Estimate of Identified Onshore Geopressured Geothermal Energy in Texas and Louisiana EGS Schematic.jpg ] Dictionary.png Sedimentary Geothermal Systems: Sedimentary Geothermal Systems produce electricity from medium temperature,

7

Enhanced Geothermal Systems Subprogram Overview  

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

Geothermal Systems Subprogram Overview May 18, 2010 Geothermal Technologies Program Peer Review Crystal City, VA Energy Efficiency & Renewable Energy eere.energy.gov Technology...

8

Residential Geothermal Systems Credit  

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

A resident individual taxpayer of Montana who installs a geothermal heating or cooling system in their principal dwelling can claim a tax credit based on the installation costs of the system, not...

9

OIT geothermal system improvements  

SciTech Connect

The Oregon Institute of Technology campus has been heated by the direct use of geothermal fluids since 1964. The 11 building campus uses geothermal energy for space heating/cooling, domestic water heating, the swimming pool and sidewalk snow melt. The hydronic system was designed to use the geothermal fluids directly in heating units. In the 1970s, problems were experienced with the design and operation of the well pumps, buried piping and heating equipment. Beginning in the early 1980`s, many improvements were made to the system due to equipment performance problems and resource management requirements. This paper discusses those improvements that included the distribution system, cooling, well pumps, cascading of geothermal fluids, installation of isolation plate heat exchangers in each building and drilling of two injection wells. Plans for future improvements include better controls to manage energy use and data monitoring systems for individual buildings, and instrumentation to monitor well pump performance.

Lienau, P.J.

1996-12-31T23:59:59.000Z

10

Enhanced Geothermal Systems (EGS) | Open Energy Information  

Open Energy Info (EERE)

Enhanced Geothermal Systems (EGS) Enhanced Geothermal Systems (EGS) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Enhanced Geothermal Systems (EGS) 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 EGS Links Related documents and websites DOE EGS Technical Roadmap DOE EGS Systems Demonstration Projects How EGS Works (Animation) EGS Development (Animation) EGS Schematic.jpg ] Dictionary.png Enhanced Geothermal Systems: Enhanced Geothermal Systems (EGS) are human engineered hydrothermal reservoirs developed for commercial use as an alternative to naturally

11

Enhanced Geothermal Systems | Department of Energy  

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

About the Geothermal Technologies Office Enhanced Geothermal Systems Enhanced Geothermal Systems The Newberry Volcano near Bend, Oregon is one of five active Energy Department...

12

National Geothermal Data System (NGDS) Geothermal Data Domain: Assessment  

Open Energy Info (EERE)

National Geothermal Data System (NGDS) Geothermal Data Domain: Assessment National Geothermal Data System (NGDS) Geothermal Data Domain: Assessment of Geothermal Community Data Needs Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: National Geothermal Data System (NGDS) Geothermal Data Domain: Assessment of Geothermal Community Data Needs Abstract To satisfy the critical need for geothermal data to advance geothermal energy as a viable renewable energy contender, the U.S. Department of Energy is in-vesting in the development of the National Geothermal Data System (NGDS). This paper outlines efforts among geothermal data providers nationwide to sup-ply cutting edge geoinformatics. NGDS geothermal data acquisition, delivery, and methodology are dis-cussed. In particular, this paper addresses the various types of data required to effectively assess

13

American Geothermal Systems | Open Energy Information  

Open Energy Info (EERE)

Geothermal Systems Place: Austin, Texas Sector: Geothermal energy Product: Installer of geothermal heating and cooling technologies, also has a patented water to air heat pump...

14

BOREHOLE PRECONDITIONING OF GEOTHERMAL WELLS FOR ENHANCED GEOTHERMAL SYSTEM  

Open Energy Info (EERE)

BOREHOLE PRECONDITIONING OF GEOTHERMAL WELLS FOR ENHANCED GEOTHERMAL SYSTEM BOREHOLE PRECONDITIONING OF GEOTHERMAL WELLS FOR ENHANCED GEOTHERMAL SYSTEM RESERVOIR DEVELOPMENT Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: BOREHOLE PRECONDITIONING OF GEOTHERMAL WELLS FOR ENHANCED GEOTHERMAL SYSTEM RESERVOIR DEVELOPMENT Details Activities (1) Areas (1) Regions (0) Abstract: Thermal stimulation can be utilized to precondition a well to optimize fracturing and production during Enhanced Geothermal System (EGS) reservoir development. A finite element model was developed for the fully coupled processes consisting of: thermoporoelastic deformation, hydraulic conduction, thermal osmosis, heat conduction, pressure thermal effect, and the interconvertibility of mechanical and thermal energy. The model has

15

Geothermal: Sponsored by OSTI -- National Geothermal Data System...  

Office of Scientific and Technical Information (OSTI)

System (NGDS) Geothermal Data: Community Requirements and Information Engineering Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log On Home...

16

Geothermal: Sponsored by OSTI -- National Geothermal Data System...  

Office of Scientific and Technical Information (OSTI)

System: Transforming the Discovery, Access, and Analytics of Data for Geothermal Exploration Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log...

17

Enhanced Geothermal Systems Subprogram Overview  

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

This overview of GTP's Enhanced Geothermal Systems subprogram was given at the GTP Program Peer Review on May 18, 2010.

18

Geographic Information System At International Geothermal Area...  

Open Energy Info (EERE)

navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geographic Information System At International Geothermal Area, Indonesia (Nash, Et Al., 2002) Exploration...

19

OIT geothermal system improvements  

SciTech Connect

Three geothermal wells drilled during the original campus construction vary from 396 m (1,300 ft) to 550 m (1,800 ft). These wells supply all of the heating and part of the cooling needs of the 11-building, 62,200 m{sup 2} (670,000 ft{sup 2}) campus. The combined capacity of the well pumps is 62 L/s(980 gpm) of 89{degrees}C (192{degrees}F) geothermal fluids. Swimming pool and domestic hot water heating impose a small but nearly constant year-round flow requirement. In addition to heating, a portion of the campus is also cooled using the geothermal resource. This is accomplished through the use of an absorption chiller. The chiller, which operates on the same principle as a gas refrigerator, requires a flow of 38 L/s (600 gpm) of geothermal fluid and produces 541 kW (154 tons) of cooling capacity (Rafferty, 1989). The annual operating costs for the system is about $35,000 including maintenance salary, equipment replacement and cost of pumping. This amounts to about $0.05 per square foot per year.

Lienau, P.J. [Geo-Heat Center, Klamath Falls, OR (United States)

1996-08-01T23:59:59.000Z

20

Blind Geothermal System | Open Energy Information  

Open Energy Info (EERE)

Blind Geothermal System Blind Geothermal System Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Blind Geothermal System Dictionary.png Blind Geothermal System: An area with a geothermal heat source, but no modern surface manifestations. Other definitions:Wikipedia Reegle Modern Geothermal Features Typical list of modern geothermal features Hot Springs Fumaroles Warm or Steaming Ground Mudpots, Mud Pools, or Mud Volcanoes Geysers Blind Geothermal System Many geothermal areas show no signs of geothermal activity at the surface if the heated water is too far below or no conduits to the surface are available. An area of geothermal activity with no surface features is referred to as a "blind geothermal system." Examples Want to add an example to this list? Select a Geothermal Resource Area to

Note: This page contains sample records for the topic "geothermal system cxs" 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

Enhanced Geothermal Systems (EGS) | 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 » Enhanced Geothermal Systems (EGS) (Redirected from EGS) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Enhanced Geothermal Systems (EGS) 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 EGS Links Related documents and websites DOE EGS Technical Roadmap DOE EGS Systems Demonstration Projects How EGS Works (Animation) EGS Development (Animation)

22

DOE and Partners Demonstrate Mobile Geothermal Power System at...  

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

Partners Demonstrate Mobile Geothermal Power System at 2009 Geothermal Energy Expo DOE and Partners Demonstrate Mobile Geothermal Power System at 2009 Geothermal Energy Expo...

23

Geothermal Site Assessment Using the National Geothermal Data System  

Open Energy Info (EERE)

Geothermal Site Assessment Using the National Geothermal Data System Geothermal Site Assessment Using the National Geothermal Data System (NGDS), with Examples from the Hawthorne Ammunition Depot Area Jump to: navigation, search Tool Summary Name: Geothermal Site Assessment Using the National Geothermal Data System (NGDS), with Examples from the Hawthorne Ammunition Depot Area Agency/Company /Organization: University of Nevada-Reno Sector: Energy Focus Area: Renewable Energy, Geothermal Topics: Resource assessment Resource Type: Case studies/examples, Publications Website: www.unr.edu/geothermal/pdffiles/PenfieldGRC2010_GeothermalSiteAssessme Cost: Free Language: English References: Paper[1] "This paper examines the features and functionality of the existing database, its integration into the 50-state NGDS, and its usage in

24

Hybrid Geothermal Heat Pump System Research Geothermal Project | Open  

Open Energy Info (EERE)

Hybrid Geothermal Heat Pump System Research Geothermal Project Hybrid Geothermal Heat Pump System Research Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Hybrid Geothermal Heat Pump System Research Project Type / Topic 1 Recovery Act - Geothermal Technologies Program: Ground Source Heat Pumps Project Type / Topic 2 Topic Area 2: Data Gathering and Analysis Project Description Geothermal, or ground-source heat pump systems have been shown to have superior energy performance to conventional heating and cooling systems in many building types and climates. There has been significant growth in the application of these systems; yet, geothermal systems have only been able to capture a few percent of the heating and cooling market. This is due primarily to the prohibitively high cost of installing the necessary ground loop.

25

National Geothermal Data System (NGDS)  

DOE Data Explorer (OSTI)

The National Geothermal Data System (NGDS) is a DOE-funded distributed network of databases and data sites. Much of the risk of geothermal energy development is associated with exploring for, confirming and characterizing the available geothermal resources. The overriding purpose of the NGDS is to help mitigate this up-front risk by serving as a central gateway for geothermal and relevant related data as well as a link to distributed data sources. Assessing and categorizing the nation's geothermal resources and consolidating all geothermal data through a publicly accessible data system will support research, stimulate public interest, promote market acceptance and investment, and, in turn, the growth of the geothermal industry. Major participants in the NGDS to date include universities, laboratories, the Arizona Geological Survey and Association of American State Geologists (Arizona Geological Survey, lead), the Geothermal Resources Council, and the U.S. Geological Survey. The Geothermal Energy Association is collaborating with the NGDS to insure that it meets the needs of the geothermal industry.

26

Integrated Chemical Geothermometry System for Geothermal Exploration  

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

DOE Geothermal Peer Review 2010 - Presentation. Develop practical and reliable system to predict geothermal reservoir temperatures from integrated chemical analyses of spring and well fluids.

27

National Geothermal Data System Architecture Design, Testing...  

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

Architecture Design, Testing and Maintenance National Geothermal Data System Architecture Design, Testing and Maintenance Project objective: To create the National Geothermal Data...

28

Enhanced Geothermal System (EGS) Fact Sheet | Department of Energy  

Office of Environmental Management (EM)

Enhanced Geothermal System (EGS) Fact Sheet Enhanced Geothermal System (EGS) Fact Sheet Overview of Enhanced Geothermal Systems. egsbasics.pdf More Documents & Publications...

29

First Commercial Success for Enhanced Geothermal Systems (EGS...  

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

Commercial Success for Enhanced Geothermal Systems (EGS) Spells Exponential Growth for Geothermal Energy First Commercial Success for Enhanced Geothermal Systems (EGS) Spells...

30

Energy Department Announces National Geothermal Data System to...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Energy Department Announces National Geothermal Data System to Accelerate Geothermal Energy Development Energy Department Announces National Geothermal Data System to Accelerate...

31

Geographic Information System At Lightning Dock Geothermal Area...  

Open Energy Info (EERE)

navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geographic Information System At Lightning Dock Geothermal Area (Getman, 2014) Exploration Activity...

32

Geothermal: Sponsored by OSTI -- NATIONAL GEOTHERMAL DATA SYSTEM...  

Office of Scientific and Technical Information (OSTI)

SYSTEM: AN EXEMPLAR OF OPEN ACCESS TO DATA Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log On HomeBasic Search About Publications Advanced...

33

NATIONAL GEOTHERMAL DATA SYSTEM (NGDS) GEOTHERMAL DATA DOMAIN: ASSESSMENT OF GEOTHERMAL COMMUNITY DATA NEEDS  

SciTech Connect

To satisfy the critical need for geothermal data to ad- vance geothermal energy as a viable renewable ener- gy contender, the U.S. Department of Energy is in- vesting in the development of the National Geother- mal Data System (NGDS). This paper outlines efforts among geothermal data providers nationwide to sup- ply cutting edge geo-informatics. NGDS geothermal data acquisition, delivery, and methodology are dis- cussed. In particular, this paper addresses the various types of data required to effectively assess geother- mal energy potential and why simple links to existing data are insufficient. To create a platform for ready access by all geothermal stakeholders, the NGDS in- cludes a work plan that addresses data assets and re- sources of interest to users, a survey of data provid- ers, data content models, and how data will be ex- changed and promoted, as well as lessons learned within the geothermal community.

Anderson, Arlene [United States Department of Energy; Blackwell, David [Southern Methodist University; Chickering, Cathy [Southern Methodist University; Boyd, Toni [Oregon Institute of Technology; Horne, Roland [Stanford University; MacKenzie, Matthew [Uberity Technology Corporation; Moore, Joseph [University of Utah; Nickull, Duane [Uberity Technology Corporation; Richard, Stephen [Arizona Geological survey; Shevenell, Lisa A. [University of Nevada, Reno

2013-01-01T23:59:59.000Z

34

MEMS Materials and Temperature Sensors for Down Hole Geothermal System Monitoring  

E-Print Network (OSTI)

Geothermal EnergyThe future of geothermal energy: Impact of enhanceddown-hole monitoring of geothermal energy systems. ASME 2011

Wodin-Schwartz, Sarah

2013-01-01T23:59:59.000Z

35

National Geothermal Data System (NGDS) Initiative | Department...  

Office of Environmental Management (EM)

Moniz officially announced deployment of the National Geothermal Data System at the White House Energy Datapalooza on May 28, 2014 in Washington, DC. Learn more. For a...

36

Co-Produced Geothermal Systems | Open Energy Information  

Open Energy Info (EERE)

Produced Geothermal Systems Produced Geothermal Systems Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Co-Produced Geothermal 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 Co-Produced Geothermal System: Co-Produced water is the water that is produced as a by-product during oil and gas production. If there is enough water produced at a high enough temperature co-produced water can be utilized for electricity production. Other definitions:Wikipedia Reegle General Air Cooled Co-Produced geothermal system demonstration at RMOTC oil site.

37

Flathead Electric Cooperative Facility Geothermal Heat Pump System...  

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

Flathead Electric Cooperative Facility Geothermal Heat Pump System Upgrade Flathead Electric Cooperative Facility Geothermal Heat Pump System Upgrade Project Will Take Advantage of...

38

Enhanced Geothermal Systems Documents for Public Comment - Now...  

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

Enhanced Geothermal Systems Documents for Public Comment - Now Closed Enhanced Geothermal Systems Documents for Public Comment - Now Closed February 28, 2012 - 3:41pm Addthis ****...

39

National Geothermal Data Systems Data Acquisition and Access...  

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

National Geothermal Data Systems Data Acquisition and Access National Geothermal Data Systems Data Acquisition and Access Project objective: To support the acquisition of new and...

40

Ground heat exchanger design for direct geothermal energy systems .  

E-Print Network (OSTI)

??Direct geothermal energy systems use the ground to heat and cool buildings. Ground-source heat pump (GSHP) systems are the most widespread form of direct geothermal… (more)

COLLS, STUART

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "geothermal system cxs" 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

National Geothermal Data System Design and Testing | Department...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Design and Testing National Geothermal Data System Design and Testing National Geothermal Data System Design and Testing presentation at the April 2013 peer review meeting held in...

42

DOE and Partners Test Enhanced Geothermal Systems Technologies...  

Office of Environmental Management (EM)

DOE and Partners Test Enhanced Geothermal Systems Technologies DOE and Partners Test Enhanced Geothermal Systems Technologies February 20, 2008 - 4:33pm Addthis DOE has embarked on...

43

Fracture Characterization in Enhanced Geothermal Systems by Wellbore...  

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

Fracture Characterization in Enhanced Geothermal Systems by Wellbore and Reservoir Analysis Fracture Characterization in Enhanced Geothermal Systems by Wellbore and Reservoir...

44

DOE Announces Webinars on the National Geothermal Data System...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

the National Geothermal Data System, Energy Efficiency and Renewable Energy Benefits for Tribal Communities, and More DOE Announces Webinars on the National Geothermal Data System,...

45

Iowa: Geothermal System Creates Jobs, Reduces Emissions in Rural...  

Office of Environmental Management (EM)

geothermal system. All mini-grant funds are allocated and will be reimbursed now that the energy improvements and geothermal systems are being installed in the buildings. The...

46

GRC Transactions, Vol. 34, 2010 Geothermal, Engineered Geothermal Systems, EGS, induced  

E-Print Network (OSTI)

of IIS, the importance of IIS to the growth of the geothermal energy industry, and suggest possible paths-effect. Injection Induced Seismicity and Geothermal Energy Trenton Cladouhos1 , Susan Petty1 , Gillian Foulger2GRC Transactions, Vol. 34, 2010 1213 Keywords Geothermal, Engineered Geothermal Systems, EGS

Foulger, G. R.

47

Practical Approach in Design of HVAC Systems Utilizing Geothermal Energy  

Science Journals Connector (OSTI)

Geothermal is the Earth’s thermal energy. In recent years geothermal energy has been utilized for generation of electricity, heating and air conditioning (HVAC). Geothermal HVAC systems are cost effective, energy

M. Fathizadeh; D. Seims

2014-01-01T23:59:59.000Z

48

Enhanced Geothermal System (EGS) Fact Sheet | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Overview of Enhanced Geothermal Systems. egsbasics.pdf More Documents & Publications Calpine Staff Run Tests at The Geysers Geothermal Power Plant in California Enhanced...

49

A fundamental study on hybrid geothermal energy systems.  

E-Print Network (OSTI)

??Research Doctorate - Doctor of Philosophy (PhD) This thesis focuses on a fundamental study of hybrid geothermal energy systems, in which geothermal energy is hybridised… (more)

Zhou, Cheng

2014-01-01T23:59:59.000Z

50

Sandia National Laboratories: enhanced geothermal systems R&D  

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

enhanced geothermal systems R&D Sandia Wins DOE Geothermal Technologies Office Funding Award On December 15, 2014, in Advanced Materials Laboratory, Capabilities, Energy,...

51

Geographic Information System At Dixie Valley Geothermal Area...  

Open Energy Info (EERE)

Geographic Information System At Dixie Valley Geothermal Area (Iovenitti, Et Al., 2012) Exploration Activity Details Location Dixie Valley Geothermal Area Exploration Technique...

52

Fracture Characterization in Enhanced Geothermal Systems by Wellbore...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Fracture Characterization in Enhanced Geothermal Systems by Wellbore and Reservoir Analysis; 2010 Geothermal Technology Program Peer Review Report Fracture Characterization in...

53

Neutron imaging for geothermal energy systems  

SciTech Connect

Geothermal systems extract heat energy from the interior of the earth using a working fluid, typically water. Three components are required for a commercially viable geothermal system: heat, fluid, and permeability. Current commercial electricity production using geothermal energy occurs where the three main components exist naturally. These are called hydrothermal systems. In the US, there is an estimated 30 GW of base load electrical power potential for hydrothermal sites. Next generation geothermal systems, named Enhanced Geothermal Systems (EGS), have an estimated potential of 4500 GW. EGSs lack in-situ fluid, permeability or both. As such, the heat exchange system must be developed or engineered within the rock. The envisioned method for producing permeability in the EGS reservoir is hydraulic fracturing, which is rarely practiced in the geothermal industry, and not well understood for the rocks typically present in geothermal reservoirs. High costs associated with trial and error learning in the field have led to an effort to characterize fluid flow and fracturing mechanisms in the laboratory to better understand how to design and manage EGS reservoirs. Neutron radiography has been investigated for potential use in this characterization. An environmental chamber has been developed that is suitable for reproduction of EGS pressures and temperatures and has been tested for both flow and precipitations studies with success for air/liquid interface imaging and 3D reconstruction of precipitation within the core.

Bingham, Philip R [ORNL; Anovitz, Lawrence {Larry} M [ORNL; Polsky, Yarom [ORNL

2013-01-01T23:59:59.000Z

54

FORSITE: a geothermal site development forecasting system  

SciTech Connect

The Geothermal Site Development Forecasting System (FORSITE) is a computer-based system being developed to assist DOE geothermal program managers in monitoring the progress of multiple geothermal electric exploration and construction projects. The system will combine conceptual development schedules with site-specific status data to predict a time-phased sequence of development likely to occur at specific geothermal sites. Forecasting includes estimation of industry costs and federal manpower requirements across sites on a year-by-year basis. The main advantage of the system, which relies on reporting of major, easily detectable industry activities, is its ability to use relatively sparse data to achieve a representation of status and future development.

Entingh, D.J.; Gerstein, R.E.; Kenkeremath, L.D.; Ko, S.M.

1981-10-01T23:59:59.000Z

55

Induced seismicity associated with enhanced geothermal system  

E-Print Network (OSTI)

Coast geopressured-geothermal wells: Two studies, Pleasantinduced by geopressured-geothermal well development. In:

Majer, Ernest L.

2006-01-01T23:59:59.000Z

56

Energy Department Announces National Geothermal Data System to Accelerate Geothermal Energy Development  

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

The National Geothermal Data System is online open-source platform that facilitates the discovery and use of geothermal data. It will help address one of the greatest barriers to development and deployment of this promising clean energy source.

57

DOE and Partners Demonstrate Mobile Geothermal Power System at 2009 Geothermal Energy Expo  

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

The U.S. Department of Energy's (DOE) Geothermal Technologies Office (GTO), along with Pratt & Whitney Power Systems, and Chena Power LLC demonstrated the PureCycle® mobile geothermal power generation unit at the 2009 Geothermal Energy Expo in Reno, Nevada.

58

National Geothermal Data System (NGDS) Geothermal Data: Community Requirements and Information Engineering  

SciTech Connect

To satisfy the critical need for geothermal data to advance geothermal energy as a viable renewable energy contender, the U.S. Department of Energy is investing in the development of the National Geothermal Data System (NGDS). This paper outlines efforts among geothermal data providers nationwide to supply cutting edge geo-informatics. NGDS geothermal data acquisition, delivery, and methodology are discussed. In particular, this paper addresses the various types of data required to effectively assess geothermal energy potential and why simple links to existing data are insufficient. To create a platform for ready access by all geothermal stakeholders, the NGDS includes a work plan that addresses data assets and resources of interest to users, a survey of data providers, data content models, and how data will be exchanged and promoted, as well as lessons learned within the geothermal community.

Anderson, Arlene [United States Department of Energy; Blackwell, David [Southern Methodist University; Chickering, Cathy [Southern Methodist University; Boyd, Toni [Oregon Institute of Technology; Horne, Roland [Stanford University; MacKenzie, Matthew [Uberity Technology Corporation; Moore, Joseph [University of Utah; Nickull, Duane [Uberity Technology Corporation; Richard, Stephen [Arizona Geological survey; Shevenell, Lisa A. [University of Nevada, Reno

2013-10-01T23:59:59.000Z

59

National Geothermal Data System Architecture Design, Testing and Maintenance  

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

Project objective: To create the National Geothermal Data System (NGDS) comprised of a core and distributed network of databases and data sites that will comprise a federated system for acquisition, management, maintenance, and dissemination of geothermal and related data.

60

How to Utilize the National Geothermal Data System (NGDS) and...  

Energy Savers (EERE)

How to Utilize the National Geothermal Data System (NGDS) and Create Your Own Federated Data Network with "Node-In-A-Box" How to Utilize the National Geothermal Data System (NGDS)...

Note: This page contains sample records for the topic "geothermal system cxs" 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

GTP Adds Meeting on the National Geothermal Data System Project...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Adds Meeting on the National Geothermal Data System Project to Peer Review GTP Adds Meeting on the National Geothermal Data System Project to Peer Review May 10, 2010 - 2:41pm...

62

MEMS Materials and Temperature Sensors for Down Hole Geothermal System Monitoring  

E-Print Network (OSTI)

and operation of geothermal power plants. US DOE EEREpercentage of geothermal electric power generation systemLow-enthalpy geothermal resources for power generation.

Wodin-Schwartz, Sarah

2013-01-01T23:59:59.000Z

63

Geographic Information System At International Geothermal Area, Indonesia  

Open Energy Info (EERE)

International Geothermal Area, Indonesia International Geothermal Area, Indonesia (Nash, Et Al., 2002) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geographic Information System At International Geothermal Area Indonesia (Nash, Et Al., 2002) Exploration Activity Details Location International Geothermal Area Indonesia Exploration Technique Geographic Information System Activity Date Usefulness not indicated DOE-funding Unknown Notes GIs also facilitates grid data (raster) analysis and visualization. For example, a raster GIs layer, derived from an enhanced Landsat 7 Thematic Mapper (TM) image of the Karaha-Telaga Bodas area, Indonesia, is shown in Figure 2. References Gregory D. Nash, Christopher Kesler, Michael C. Adam (2002) Geographic Information Systems- Tools For Geotherm Exploration, Tracers

64

Fluid Imaging of Enhanced Geothermal Systems | Department of...  

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

Imaging of Enhanced Geothermal Systems Project objectives: Attempting to Image EGS Fracture & Fluid Networks; Employing joint Geophysical Imaging Technologies....

65

Geochemical characterization of geothermal systems in the Great...  

Open Energy Info (EERE)

insights into the possible contributions of geothermal systems to groundwater chemistry and development of mitigation strategies for attendant environmental issues....

66

Geothermal Energy Association Recognizes the National Geothermal Data System  

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

The Geothermal Energy Association (GEA) announced today the winners of their 2014 GEA Honors, which recognizes companies, projects, and individuals who have demonstrated outstanding achievement in...

67

Geothermal Energy Association Recognizes the National Geothermal...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Geothermal Energy Association Recognizes the National Geothermal Data System Geothermal Energy Association Recognizes the National Geothermal Data System July 29, 2014 - 8:20am...

68

The Patuha geothermal system: a numerical model of a vapor-dominated system.  

E-Print Network (OSTI)

??The Patuha geothermal system is a vapor-dominated reservoir located about 40 kilometers southwest of Bandung on western Java, Indonesia. The geothermal system consists of a… (more)

Schotanus, M.R.J.

2013-01-01T23:59:59.000Z

69

IKEA's New Store in Colorado to Feature Geothermal System | Department...  

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

Articles Blue flame generated by natural gas. Geek-Up08.27.10 -- Geothermal Stores, Graphene Loops, Nozzle Technology and the 1918 El Nio Geothermal Heating and Cooling Systems...

70

Development of Exploration Methods for Engineered Geothermal Systems  

Open Energy Info (EERE)

Exploration Methods for Engineered Geothermal Systems Exploration Methods for Engineered Geothermal Systems Through Integrated Geophysical, Geologic and Geochemical Interpretation the Seismic Analysis Component Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Development of Exploration Methods for Engineered Geothermal Systems Through Integrated Geophysical, Geologic and Geochemical Interpretation the Seismic Analysis Component Authors Ileana M. Tibuleac, Joe Iovenitti, David von Seggern, Jon Sainsbury, Glenn Biasi and John G. Anderson Conference Stanford Geothermal Conference; Stanford University; 2013 Published PROCEEDINGS, Thirty-Eighth Workshop on Geothermal Reservoir Engineering Stanford University;, 2013 DOI Not Provided Check for DOI availability: http://crossref.org

71

Induced seismicity associated with enhanced geothermal system  

E-Print Network (OSTI)

and Renewable Energy, Geothermal Technologies Program of theHill hot dry rock geothermal energy site, New Mexico. Int J.1. In: Geopressured-Geothermal Energy, 105, Proc. 5th U.S.

Majer, Ernest L.

2006-01-01T23:59:59.000Z

72

Induced seismicity associated with enhanced geothermal system  

E-Print Network (OSTI)

Hill hot dry rock geothermal energy site, New Mexico. Int J.No. 1. In: Geopressured-Geothermal Energy, 105, Proc. 5thCoast Geopressured-Geothermal Energy Conf. (Bebout, D.G. ,

Majer, Ernest L.

2006-01-01T23:59:59.000Z

73

Mapping Fractures In The Medicine Lake Geothermal System | Open Energy  

Open Energy Info (EERE)

Fractures In The Medicine Lake Geothermal System Fractures In The Medicine Lake Geothermal System Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Mapping Fractures In The Medicine Lake Geothermal System Details Activities (1) Areas (1) Regions (0) Abstract: A major challenge to energy production in the region has been locating high-permability fracture zones in the largely impermeable volcanic host rock. An understanding of the fracture networks will be a key to harnessing geothermal resources in the Cascades Author(s): Steven Clausen, Michal Nemcok, Joseph Moore, Jeffrey Hulen, John Bartley Published: GRC, 2006 Document Number: Unavailable DOI: Unavailable Core Analysis At Medicine Lake Area (Clausen Et Al, 2006) Medicine Lake Geothermal Area Retrieved from "http://en.openei.org/w/index.php?title=Mapping_Fractures_In_The_Medicine_Lake_Geothermal_System&oldid=388927

74

College of Idaho Geothermal System, Caldwell, Idaho  

SciTech Connect

There appears to be a good potential for a 160{sup 0}F resource at the College of Idaho site. Both existing well data and recent geologic and hydrologic investigations suggest that such a temperature should be available at a depth of approximately 3500 feet. Use of a temperature in the 160{sup 0}F range would not permit a 100% displacement of present natural gas use for space and domestic hot water. Because these systems were typically designed for 200{sup 0}F water or low pressure steam (approx. 220{sup 0}F), the performance of the existing equipment would be less than peak building requirements. However, even without major system modifications (the cost of which would be unreasonable), a geothermal system based on the above resource temperature would be capable of displacing about 78% of current natural gas consumption attributable to space and domestic hot water heating. The system outlined in the report would consist of a 3500 foot production well which would supply geothermal fluid to 12 major buildings on campus. Geothermal water would be passed through heat exchangers in each building. The heat exchangers would deliver heat to the existing heating loops. Most buildings would still require a small amount of input from the existing boiler during the coldest periods of the year. After having passed through the system, the geothermal water would then be injected into a disposal well. This is a key factor in the overall economics of the system. The assumption has been made that a full depth (3550 foot) injection well would be required. It is possible, though unclear at this point, that injection could be accomplished at a shallower depth into a similar aquifer. Since the injection well amounts to 24% of the total system capital cost, this is an important factor.

Rafferty, K.

1984-10-01T23:59:59.000Z

75

Geothermal Heating and Cooling Systems Featured on NBC Nightly...  

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

cooling systems that are providing 30%-70% energy and cost savings for homeowners in Jordan, New York. Demand for these systems is growing; nationally, shipments of geothermal...

76

Enhanced Geothermal Systems (EGS) with CO2as Heat Transmission...  

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

precipitation with spatial and temporal flow variations in CO2brinerock systems Tracer Methods for Characterizing Fracture Stimulation in Engineered Geothermal Systems (EGS)...

77

Performance of Deep Geothermal Energy Systems .  

E-Print Network (OSTI)

??Geothermal energy is an important source of clean and renewable energy. This project deals with the study of deep geothermal power plants for the generation… (more)

Manikonda, Nikhil

2012-01-01T23:59:59.000Z

78

Behavior Of Rare Earth Element In Geothermal Systems, A New  

Open Energy Info (EERE)

Behavior Of Rare Earth Element In Geothermal Systems, A New Behavior Of Rare Earth Element In Geothermal Systems, A New Exploration-Exploitation Tool Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Behavior Of Rare Earth Element In Geothermal Systems, A New Exploration-Exploitation Tool Details Activities (32) Areas (17) Regions (0) Abstract: The goal of this four-year project was to provide a database by which to judge the utility of the rare earth elements (REE) in the exploration for and exploitation of geothermal fields in the United States. Geothermal fluids from hot springs and wells have been sampled from a number of locations, including: (1) the North Island of New Zealand (1 set of samples); (2) the Cascades of Oregon; (3) the Harney, Alvord Desert and Owyhee geothermal areas of Oregon; (4) the Dixie Valley and Beowawe fields

79

Demonstration of an Enhanced Geothermal System at the Northwest Geysers Geothermal Field, California  

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

Geothermal Technologies Program 2010 Peer Review Demonstration of an Enhanced Geothermal System at the Northwest Geysers Geothermal Field California by Mark Walters of Calpine and Patrick Dobson of Lawrence Berkeley National Laboratory for Engineered Geothermal Systems Demonstration Projects Track. Objective to create an Enhanced Geothermal System (EGS) by directly and systematically injecting low volumes of cold? water into NW Geysers high temperature zone (HTZ), similar to inadvertently? created EGS in the oldest Geysers production area to the southeast of the EGS demonstration area. Other objectives are to investigate how cold-water injection mechanically and chemically affects fractured high temperature rock systems; demonstrate the technology to monitor and validate stimulation and sustainability of such an EGS; and develop an EGS research field laboratory that can be used for testing EGS stimulation and monitoring technologies including new high temperature tools developed by others.

80

Prediction of Scaling in Geothermal Systems  

SciTech Connect

One of the main objectives of the DOE Geothermal Program is to improve the efficiency and reliability of geothermal operations so that this renewable form of energy can be integrated into the nation's energy system. Scale formation and other chemical problems associated with energy extraction from high temperature brines frequently inhibit the economical utilization of geothermal resources. In some cases, these chemical problems can be so severe that development of a site must be abandoned after considerable capital investment. The goal of our research efforts is to construct an accurate computer model for describing the chemical behavior of geothermal brines under a wide range of operating conditions. This technology will provide industry a cost-effective means of identifying scaling problems in production and reinjection wells as well as in surface equipment, and also devising and testing methods for well as other uses described in table (1) can contribute significantly to meeting the objectives of the Geothermal Program. The chemical model we have developed to date can simulate calcium carbonate scale formation and gas solubilities in concentrated brines containing sodium, potassium, calcium, chloride and sulfate ions as a function of temperature to 250 C and for variable partial pressure of CO{sub 2}. It can predict the solubility of other scale-forming minerals, such as amorphous silica, gypsum-anhydrite, halite and glasserite, as a function of brine composition to 250 C. The only required input for the model is the temperature, pressure and composition of the brine. Our modeling approach is based on semi-empirical thermodynamic descriptions of aqueous solutions. The model equations are parameterized by careful comparison to a variety of laboratory data. The ability of the resulting models to accurately predict the chemical behavior of even very concentrated high temperature brines is well demonstrated. This ability is an unusual feature of our models which is vital for applications to many important geothermal systems, such as those found in the Imperial Valley of California. In this report, the use of the present version of our model will be illustrated by an application to the prediction of the onset of two phase flow (breakout) in a brine confined by an external pressure. Calculations of this kind are important in assessing the production potential of a geothermal resource because the initiation of breakout in a well bore or power plant is usually simultaneous with the appearance of massive scale deposition. It is therefore necessary to predict breakout and also to assess the consequences of breakout in designing more efficient energy extraction processes. For the geothermal brine for which we have reliable composition and breakout data (East Mesa in California), the model gives results which are essentially identical to the measured values. Calculations also illustrate the importance of contributions of dissolved gases to the total pressure of the brines. Applications to other scale formation problems in Dixie Valley geothermal brines will also be discussed.

Weare, John H.; Moller, Nancy E.

1989-03-21T23:59:59.000Z

Note: This page contains sample records for the topic "geothermal system cxs" 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

GEOTHERMAL Events | Department of Energy  

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

GEOTHERMAL Events GEOTHERMAL Events April 2018 < prev next > Geothermal Home About the Geothermal Technologies Office Enhanced Geothermal Systems Hydrothermal Low-Temperature &...

82

GEOTHERMAL Events | Department of Energy  

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

GEOTHERMAL Events GEOTHERMAL Events May 2018 < prev next > Geothermal Home About the Geothermal Technologies Office Enhanced Geothermal Systems Hydrothermal Low-Temperature &...

83

GEOTHERMAL Events | Department of Energy  

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

GEOTHERMAL Events GEOTHERMAL Events March 2018 < prev next > Geothermal Home About the Geothermal Technologies Office Enhanced Geothermal Systems Hydrothermal Low-Temperature &...

84

GEOTHERMAL Events | Department of Energy  

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

GEOTHERMAL Events GEOTHERMAL Events February 2018 < prev next > Geothermal Home About the Geothermal Technologies Office Enhanced Geothermal Systems Hydrothermal Low-Temperature &...

85

GEOTHERMAL Events | Department of Energy  

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

GEOTHERMAL Events GEOTHERMAL Events January 2018 < prev next > Geothermal Home About the Geothermal Technologies Office Enhanced Geothermal Systems Hydrothermal Low-Temperature &...

86

Numerical Modelling of Geothermal Systems a Short Introduction | Open  

Open Energy Info (EERE)

Numerical Modelling of Geothermal Systems a Short Introduction Numerical Modelling of Geothermal Systems a Short Introduction Jump to: navigation, search OpenEI Reference LibraryAdd to library General: Numerical Modelling of Geothermal Systems a Short Introduction Authors Mauro Cacace, Björn Onno Kaiser and Yvonne Cherubini Published Helmholtz Association, The date "N/A" was not understood.The date "N/A" was not understood. DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Numerical Modelling of Geothermal Systems a Short Introduction Citation Mauro Cacace,Björn Onno Kaiser,Yvonne Cherubini. N/A. Numerical Modelling of Geothermal Systems a Short Introduction. N/A. Helmholtz Association. N/Ap. Retrieved from "http://en.openei.org/w/index.php?title=Numerical_Modelling_of_Geothermal_Systems_a_Short_Introduction&oldid=688986"

87

Ball State building massive geothermal system | Department of Energy  

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

Ball State building massive geothermal system Ball State building massive geothermal system Ball State building massive geothermal system March 19, 2010 - 5:47pm Addthis Workers drill boreholes for a geothermal heating and cooling system at Ball State University’s campus in Muncie, Ind. | Photo courtesy of Ball State University Workers drill boreholes for a geothermal heating and cooling system at Ball State University's campus in Muncie, Ind. | Photo courtesy of Ball State University Paul Lester Communications Specialist for the Office of Energy Efficiency and Renewable Energy Ball State University is building America's largest ground source district geothermal heating and cooling system. The new operation will save the school millions of dollars, slash greenhouse gases and create jobs. The project will also "expand how America will define the use of

88

Ball State building massive geothermal system | Department of Energy  

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

Ball State building massive geothermal system Ball State building massive geothermal system Ball State building massive geothermal system March 19, 2010 - 5:47pm Addthis Workers drill boreholes for a geothermal heating and cooling system at Ball State University’s campus in Muncie, Ind. | Photo courtesy of Ball State University Workers drill boreholes for a geothermal heating and cooling system at Ball State University's campus in Muncie, Ind. | Photo courtesy of Ball State University Paul Lester Communications Specialist, Office of Energy Efficiency and Renewable Energy Ball State University is building America's largest ground source district geothermal heating and cooling system. The new operation will save the school millions of dollars, slash greenhouse gases and create jobs. The project will also "expand how America will define the use of

89

Numerical Modeling Of Basin And Range Geothermal Systems | Open Energy  

Open Energy Info (EERE)

Numerical Modeling Of Basin And Range Geothermal Systems Numerical Modeling Of Basin And Range Geothermal Systems Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Numerical Modeling Of Basin And Range Geothermal Systems Details Activities (3) Areas (3) Regions (0) Abstract: Basic qualitative relationships for extensional geothermal systems that include structure, heat input, and permeability distribution have been established using numerical models. Extensional geothermal systems, as described in this paper, rely on deep circulation of groundwater rather than on cooling igneous bodies for heat, and rely on extensional fracture systems to provide permeable upflow paths. A series of steady-state, two-dimensional simulation models is used to evaluate the effect of permeability and structural variations on an idealized, generic

90

Geochemical characterization of geothermal systems in the Great Basin:  

Open Energy Info (EERE)

characterization of geothermal systems in the Great Basin: characterization of geothermal systems in the Great Basin: Implications for exploration, exploitation, and environmental issues Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Geochemical characterization of geothermal systems in the Great Basin: Implications for exploration, exploitation, and environmental issues Details Activities (0) Areas (0) Regions (0) Abstract: The objective of this ongoing project is the development of a representative geochemical database for a comprehensive range of elemental and isotopic parameters (i.e., beyond the typical data suite) for a range of geothermal systems in the Great Basin. Development of this database is one of the first steps in understanding the nature of geothermal systems in the Great Basin. Of particular importance in the Great Basin is utilizing

91

Geographic Information Systems- Tools For Geotherm Exploration, Tracers  

Open Energy Info (EERE)

Systems- Tools For Geotherm Exploration, Tracers Systems- Tools For Geotherm Exploration, Tracers Data Analysis, And Enhanced Data Distribution, Visualization, And Management Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Geographic Information Systems- Tools For Geotherm Exploration, Tracers Data Analysis, And Enhanced Data Distribution, Visualization, And Management Details Activities (4) Areas (3) Regions (0) Abstract: Geographic information systems (GIS) are an underused resource that can help the geothermal industry in exploration, tracer analysis, infrastructure management, and the general distribution and use of data. GIS systems are highly customizable to specific user needs and can use entire corporate data sets through a visual interface. This paper briefly documents the use of GIS in specific examples of geothermal research at the

92

Characterization of a geothermal system in the Upper Arkansas...  

Open Energy Info (EERE)

Paper: Characterization of a geothermal system in the Upper Arkansas Valley Authors T. Blum, K. van Wijk, L. Liberty, M. Batzle, R. Krahenbuhl, A. Revil and R. Reynolds...

93

Creation of an Enhanced Geothermal System through Hydraulic and...  

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

an Enhanced Geothermal System on the margin of the Coso field through the hydraulic, thermal, andor chemical stimulation of one or more tight injection wells; to increase the...

94

Geothermal: Sponsored by OSTI -- NREL's System Advisor Model...  

Office of Scientific and Technical Information (OSTI)

NREL's System Advisor Model Simplifies Complex Energy Analysis (Fact Sheet) Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log On HomeBasic...

95

Geographic Information System At Dixie Valley Geothermal Area...  

Open Energy Info (EERE)

Details Location Dixie Valley Geothermal Area Exploration Technique Geographic Information System Activity Date 1996 - 1997 Usefulness not indicated DOE-funding Unknown...

96

Geographic Information System At Chena Geothermal Area (Holdmann...  

Open Energy Info (EERE)

Activity Details Location Chena Geothermal Area Exploration Technique Geographic Information System Activity Date 2005 - 2007 Usefulness useful DOE-funding Unknown Exploration...

97

Flathead Electric Cooperative Facility Geothermal Heat Pump System Upgrade  

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

Project Will Take Advantage of Abundant Water in Shallow Aquifer. Demonstrate Low Temperature GSHP System Design. Provides a Baseline for Local Industrial Geothermal Project Costs and Benefits.

98

Fracture Characterization in Enhanced Geothermal Systems by Wellbore...  

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

5 4.6.4 Fracture Characterization in Enhanced Geothermal Systems by Wellbore and Reservoir Analysis Presentation Number: 031 Investigator: Horne, Roland (Stanford University)...

99

Enhanced Geothermal System (EGS) Fact Sheet | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

System at the Northwest Geysers Geothermal Field, California EA-1733: Final Environmental Assessment Fracture Evolution Following a Hydraulic Stimulation within an EGS Reservoir...

100

Final Report: Enhanced Geothermal Systems Technology Phase II...  

Open Energy Info (EERE)

Valley, New Mexico Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Final Report: Enhanced Geothermal Systems Technology Phase II: Animas Valley, New...

Note: This page contains sample records for the topic "geothermal system cxs" 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

High-Temperature-High-Volume Lifting for Enhanced Geothermal Systems  

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

High-Temperature-High-Volume Lifting for Enhanced Geothermal Systems presentation at the April 2013 peer review meeting held in Denver, Colorado.

102

National Geothermal Data System (NGDS) Fact Sheet | Department...  

Energy Savers (EERE)

information that contains enough raw data points to pinpoint the elusive sweet spots of geothermal energy. NGDS is an interoperable networked system of distributed data...

103

Geothermal: Sponsored by OSTI -- Generic Natural Systems Evaluation...  

Office of Scientific and Technical Information (OSTI)

Generic Natural Systems Evaluation - Thermodynamic Database Development and Data Management Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log...

104

Experience with the Development of Advanced Materials for Geothermal Systems  

SciTech Connect

This chapter contains the following sections: Introduction, Advanced Cements, Materials Research and Development in Enhanced Geothermal Systems (EGS), Advanced Coatings, and Conclusions.

Sugama, T.; Butcher, T.; Ecker, L.

2011-01-01T23:59:59.000Z

105

IEA-GIA ExCo - National Geothermal Data System and Online Tools...  

Energy Savers (EERE)

IEA-GIA ExCo - National Geothermal Data System and Online Tools IEA-GIA ExCo - National Geothermal Data System and Online Tools National Geothermal Data System presentation by Jay...

106

EA-1893: Canby Cascaded Geothermal Development System, Canby, California |  

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

93: Canby Cascaded Geothermal Development System, Canby, 93: Canby Cascaded Geothermal Development System, Canby, California EA-1893: Canby Cascaded Geothermal Development System, Canby, California Summary This EA will evaluate the environmental impacts of a proposal by Modoc Contracting Company to use DOE grant funds to fulfill its plan to expand its reliance on geothermal resources by producing more hot water and using it to produce power as well as thermal energy. The goal of the project is to complete a cascaded geothermal system that generates green power for the local community, provides thermal energy to support greenhouse and aquaculture operation, provide sustainable thermal energy for residential units, and eliminate the existing geothermal discharge to a local river. NOTE: NOTE: This EA has been cancelled.

107

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

108

Geothermal Resource Analysis and Structure of Basin and Range Systems,  

Open Energy Info (EERE)

Analysis and Structure of Basin and Range Systems, Analysis and Structure of Basin and Range Systems, Especially Dixie Valley Geothermal Field, Nevada Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Geothermal Resource Analysis and Structure of Basin and Range Systems, Especially Dixie Valley Geothermal Field, Nevada Authors David D. Blackwell, Kenneth W. Wisian, Maria C. Richards, Mark Leidig, Richard Smith and Jason McKenna Published U.S. Department of Energy, 2003 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Geothermal Resource Analysis and Structure of Basin and Range Systems, Especially Dixie Valley Geothermal Field, Nevada Citation David D. Blackwell,Kenneth W. Wisian,Maria C. Richards,Mark Leidig,Richard Smith,Jason McKenna. 2003. Geothermal Resource Analysis and Structure of

109

National Geothermal Data System: Transforming the Discovery, Access, and Analytics of Data for Geothermal Exploration  

SciTech Connect

Compendium of Papers from the 38th Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California February 11-13, 2013 The National Geothermal Data System (NGDS) is a distributed, interoperable network of data collected from state geological surveys across all fifty states and the nation’s leading academic geothermal centers. The system serves as a platform for sharing consistent, reliable, geothermal-relevant technical data with users of all types, while supplying tools relevant for their work. As aggregated data supports new scientific findings, this content-rich linked data ultimately broadens the pool of knowledge available to promote discovery and development of commercial-scale geothermal energy production. Most of the up-front risks associated with geothermal development stem from exploration and characterization of subsurface resources. Wider access to distributed data will, therefore, result in lower costs for geothermal development. NGDS is on track to become fully operational by 2014 and will provide a platform for custom applications for accessing geothermal relevant data in the U.S. and abroad. It is being built on the U.S. Geoscience Information Network (USGIN) data integration framework to promote interoperability across the Earth sciences community. The basic structure of the NGDS employs state-of-the art informatics to advance geothermal knowledge. The following four papers comprising this Open-File Report are a compendium of presentations, from the 38th Annual Workshop on Geothermal Reservoir Engineering, taking place February 11-13, 2013 at Stanford University, Stanford, California. “NGDS Geothermal Data Domain: Assessment of Geothermal Community Data Needs,” outlines the efforts of a set of nationwide data providers to supply data for the NGDS. In particular, data acquisition, delivery, and methodology are discussed. The paper addresses the various types of data and metadata required and why simple links to existing data are insufficient for promoting geothermal exploration. Authors of this paper are Arlene Anderson, US DOE Geothermal Technologies Office, David Blackwell, Southern Methodist University (SMU), Cathy Chickering (SMU), Toni Boyd, Oregon Institute of Technology’s GeoHeat Center, Roland Horne, Stanford University, Matthew MacKenzie, Uberity, Joe Moore, University of Utah, Duane Nickull, Uberity, Stephen Richard, Arizona Geological Survey, and Lisa Shevenell, University of Nevada, Reno. “NGDS User Centered Design: Meeting the Needs of the Geothermal Community,” discusses the user- centered design approach taken in the development of a user interface solution for the NGDS. The development process is research based, highly collaborative, and incorporates state-of-the-art practices to ensure a quality user interface for the widest and greatest utility. Authors of this paper are Harold Blackman, Boise State University, Suzanne Boyd, Anthro-Tech, Kim Patten, Arizona Geological Survey, and Sam Zheng, Siemens Corporate Research. “Fueling Innovation and Adoption by Sharing Data on the DOE Geothermal Data Repository Node on the National Geothermal Data System,” describes the motivation behind the development of the Geothermal Data Repository (GDR) and its role in the NGDS. This includes the benefits of using the GDR to share geothermal data of all types and DOE’s data submission process. Authors of this paper are Jon Weers, National Renewable Energy Laboratory and Arlene Anderson, US DOE Geothermal Technologies Office. Finally, “Developing the NGDS Adoption of CKAN for Domestic & International Data Deployment,” provides an overview of the “Node-In-A-Box” software package designed to provide data consumers with a highly functional interface to access the system, and to ease the burden on data providers who wish to publish data in the system. It is important to note that this software package constitutes a reference implementation and that the NGDS architecture is based on open standards, which means other server software can make resources available, a

Patten, Kim [Arizona Geological Survey

2013-05-01T23:59:59.000Z

110

Understanding The Chena Hot Springs, Alaska, Geothermal System Using  

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 » Understanding The Chena Hot Springs, Alaska, Geothermal System Using Temperature And Pressure Data From Exploration Boreholes Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Understanding The Chena Hot Springs, Alaska, Geothermal System Using Temperature And Pressure Data From Exploration Boreholes Details Activities (7) Areas (1) Regions (0) Abstract: Chena Hot Springs is a small, moderate temperature, deep circulating geothermal system, apparently typical of those associated to hot springs of interior Alaska. Multi-stage drilling was used in some

111

Conceptual design of a geothermal site development forecasting system  

SciTech Connect

A site development forecasting system has been designed in response to the need to monitor and forecast the development of specific geothermal resource sites for electrical power generation and direct heat applications. The system is comprised of customized software, a site development status data base, and a set of complex geothermal project development schedules. The system would use site-specific development status information obtained from the Geothermal Progress Monitor and other data derived from economic and market penetration studies to produce reports on the rates of geothermal energy development, federal agency manpower requirements to ensure these developments, and capital expenditures and technical/laborer manpower required to achieve these developments.

Neham, E.A.; Entingh, D.J.

1980-03-01T23:59:59.000Z

112

Geophysical Characterization of a Geothermal System Neal Hot Springs,  

Open Energy Info (EERE)

Characterization of a Geothermal System Neal Hot Springs, Characterization of a Geothermal System Neal Hot Springs, Oregon, USA Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Geophysical Characterization of a Geothermal System Neal Hot Springs, Oregon, USA Abstract Neal Hot Springs is an active geothermal area that is also the proposed location of a binary power plant, which is being developed by US Geothermal Inc. To date, two production wells have been drilled and an injection well is in the process of being completed. The primary goal of this field camp was to provide a learning experience for students studying geophysics, but a secondary goal was to characterize the Neal Hot Springs area to provide valuable information on the flow of geothermal fluids through the subsurface. This characterization was completed using a variety of

113

Geothermal Resource Analysis And Structure Of Basin And Range Systems,  

Open Energy Info (EERE)

Analysis And Structure Of Basin And Range Systems, Analysis And Structure Of Basin And Range Systems, Especially Dixie Valley Geothermal Field, Nevada Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Geothermal Resource Analysis And Structure Of Basin And Range Systems, Especially Dixie Valley Geothermal Field, Nevada Details Activities (12) Areas (5) Regions (0) Abstract: Publish new thermal and drill data from the Dizie Valley Geothermal Field that affect evaluation of Basin and Range Geothermal Resources in a very major and positive way. Completed new geophysical surveys of Dizie Valley including gravity and aeromagnetics and integrated the geophysical, seismic, geological and drilling data at Dizie Valley into local and regional geologic models. Developed natural state mass and energy

114

Geochemistry Of The Lake City Geothermal System, California, Usa | Open  

Open Energy Info (EERE)

Geochemistry Of The Lake City Geothermal System, California, Usa Geochemistry Of The Lake City Geothermal System, California, Usa Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Geochemistry Of The Lake City Geothermal System, California, Usa Details Activities (2) Areas (1) Regions (0) Abstract: Lake City hot springs and geothermal wells chemically fall into a narrow compositional group. This indicates that, with the exception of a few hot springs, mixing with shallow cold ground waters does not have a significant influence on the chemistry of the hot springs. Narrow ranges in plots of F, B and Li versus Cl, and _D to _18O values indicate minimal mixing. Because of this, the compositions of the natural hot spring waters are fairly representative of the parent geothermal water. The average

115

Role of Fluid Pressure in the Production Behavior of Enhanced Geothermal Systems with CO2 as Working Fluid  

E-Print Network (OSTI)

Brown, D. A Hot Dry Rock Geothermal Energy Concept Utilizingand Renewable Energy, Office of Geothermal Technologies, ofenhanced geothermal systems (EGS), predicting larger energy

Pruess, Karsten

2008-01-01T23:59:59.000Z

116

Geothermal system saving money at fire station | Department of Energy  

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

Geothermal system saving money at fire station Geothermal system saving money at fire station Geothermal system saving money at fire station April 9, 2010 - 3:45pm Addthis Joshua DeLung What will the project do? A geothermal heating and cooling system has enabled the substation to save taxpayers $15,000 annually when compared to a traditional system. The high temperature of the treatment building's water helps reduce the amount of energy needed to heat water in the substation. An environmentally friendly geothermal heating and cooling system in Pennsylvania will save taxpayers $15,000 a year as part of a new fire substation that will decrease emergency response times. The Alpha Fire Co. celebrated the opening of substation on the ground floor of the College Township municipal building earlier this year in State

117

Characteristics of Basin and Range Geothermal Systems with Fluid  

Open Energy Info (EERE)

Characteristics of Basin and Range Geothermal Systems with Fluid Characteristics of Basin and Range Geothermal Systems with Fluid Temperatures of 150°C to 200°C Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Characteristics of Basin and Range Geothermal Systems with Fluid Temperatures of 150°C to 200°C Abstract Six geothermal reservoirs with fluid temperatures over 200°C and ten geothermal systems with measured fluid temperatures of 150-200°C have been discovered in the northern Basin and Range Province of the USA. A comparison of these high and moderate temperature systems shows considerable overlap in geographical distribution, geology, and physical properties. Our ability to distinguish between moderate and high temperature systems using fluid chemistry has been limited by often

118

Blind Geothermal System Exploration in Active Volcanic Environments;  

Open Energy Info (EERE)

System Exploration in Active Volcanic Environments; System Exploration in Active Volcanic Environments; Multi-phase Geophysical and Geochemical Surveys in Overt and Subtle Volcanic Systems, Hawaii and Maui Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Blind Geothermal System Exploration in Active Volcanic Environments; Multi-phase Geophysical and Geochemical Surveys in Overt and Subtle Volcanic Systems, Hawai'i and Maui Project Type / Topic 1 Recovery Act: Geothermal Technologies Program Project Type / Topic 2 Validation of Innovative Exploration Technologies Project Description The project will perform a suite of stepped geophysical and geochemical surveys and syntheses at both a known, active volcanic system at Puna, Hawai'i and a blind geothermal system in Maui, Hawai'i. Established geophysical and geochemical techniques for geothermal exploration including gravity, major cations/anions and gas analysis will be combined with atypical implementations of additional geophysics (aeromagnetics) and geochemistry (CO2 flux, 14C measurements, helium isotopes and imaging spectroscopy). Importantly, the combination of detailed CO2 flux, 14C measurements and helium isotopes will provide the ability to directly map geothermal fluid upflow as expressed at the surface. Advantageously, the similar though active volcanic and hydrothermal systems on the east flanks of Kilauea have historically been the subject of both proposed geophysical surveys and some geochemistry; the Puna Geothermal Field (Puna) (operated by Puna Geothermal Venture [PGV], an Ormat subsidiary) will be used as a standard by which to compare both geophysical and geochemical results.

119

Strategies To Detect Hidden Geothermal Systems Based On Monitoring and  

Open Energy Info (EERE)

To Detect Hidden Geothermal Systems Based On Monitoring and To Detect Hidden Geothermal Systems Based On Monitoring and Analysis Of CO2 In The Near-Surface Environment Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Strategies To Detect Hidden Geothermal Systems Based On Monitoring and Analysis Of CO2 In The Near-Surface Environment Details Activities (5) Areas (1) Regions (0) Abstract: We investigate the potential for CO2 monitoring in thenear-surface environment as an approach to exploration for hiddengeothermal systems. Numerical simulations of CO2 migration from a modelhidden geothermal system show that CO2 concentrations can reach highlevels in the shallow subsurface even for relatively low CO2 fluxes.Therefore, subsurface measurements offer an advantage over above-groundmeasurements which are affected by winds that rapidly disperse

120

Behavior of Rare Earth Elements in Geothermal Systems- A New  

Open Energy Info (EERE)

Behavior of Rare Earth Elements in Geothermal Systems- A New Behavior of Rare Earth Elements in Geothermal Systems- A New Exploration/Exploitation Tool? Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Behavior of Rare Earth Elements in Geothermal Systems- A New Exploration/Exploitation Tool? Abstract N/A Author Department of Geology and Geological Engineering niversity of Idaho Published Publisher Not Provided, 2001 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Behavior of Rare Earth Elements in Geothermal Systems- A New Exploration/Exploitation Tool? Citation Department of Geology and Geological Engineering niversity of Idaho. 2001. Behavior of Rare Earth Elements in Geothermal Systems- A New Exploration/Exploitation Tool?. (!) : (!) . Retrieved from

Note: This page contains sample records for the topic "geothermal system cxs" 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

Development of Exploration Methods for Engineered Geothermal Systems  

Open Energy Info (EERE)

Development of Exploration Methods for Engineered Geothermal Systems Development of Exploration Methods for Engineered Geothermal Systems through Integrated Geophysical, Geologic and Geochemical Interpretation Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Development of Exploration Methods for Engineered Geothermal Systems through Integrated Geophysical, Geologic and Geochemical Interpretation Abstract N/A Author U.S. Department of Energy Published Publisher Not Provided, Date Not Provided DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Development of Exploration Methods for Engineered Geothermal Systems through Integrated Geophysical, Geologic and Geochemical Interpretation Citation U.S. Department of Energy. Development of Exploration Methods for Engineered Geothermal Systems through Integrated Geophysical, Geologic and

122

Assessment of Favorable Structural Settings of Geothermal Systems in the  

Open Energy Info (EERE)

Assessment of Favorable Structural Settings of Geothermal Systems in the Assessment of Favorable Structural Settings of Geothermal Systems in the Great Basin, Western USA Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Assessment of Favorable Structural Settings of Geothermal Systems in the Great Basin, Western USA Abstract We have undertaken a thorough inventory of the structural settings of known geothermal systems (>400 total) in the extensional to transtensional terrane of the Great Basin in the western USA. Of the more than 200 geothermal fields catalogued to date, we found that step-overs or relay ramps in normal fault zones served as the most favorable structural setting, hosting ~32% of the systems. Such areas are characterized by multiple, commonly overlapping fault strands, increased fracture density,

123

The Krafla Geothermal System. A Review of Geothermal Research and Revision  

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 » The Krafla Geothermal System. A Review of Geothermal Research and Revision of the Conceptual Model Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: The Krafla Geothermal System. A Review of Geothermal Research and Revision of the Conceptual Model Authors Mortensen A.K., Gudmundsson Á., Steingrímsson B., Sigmundsson F., Axelsson G., Ármannsson H., Björnsson H., Ágústsson K., Saemundsson K., Ólafsson M., Karlsdóttir R., Halldórsdóttir S. and Hauksson T. Organization Iceland GeoSurvey Published Iceland GeoSurvey, 2009

124

Isotope Transport and Exchange within the Coso Geothermal System | Open  

Open Energy Info (EERE)

Transport and Exchange within the Coso Geothermal System Transport and Exchange within the Coso Geothermal System Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Isotope Transport and Exchange within the Coso Geothermal System Details Activities (1) Areas (1) Regions (0) Abstract: We are investigating the plumbing of the Coso geothermal system and the nearby Coso Hot Springs using finite element models of single-phase, variable-density fluid flow, conductive- convective heat transfer, fluid-rock isotope exchange, and groundwater residence times. Using detailed seismic reflection data and geologic mapping, we constructed a regional crosssectional model that extends laterally from the Sierra Nevada to Wildhorse Mesa, west of the Argus Range. The base of the model terminates at the brittle-ductile transition zone. A sensitivity study was

125

Overview Of The Lake City, California Geothermal System | Open Energy  

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 » Overview Of The Lake City, California Geothermal System Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Overview Of The Lake City, California Geothermal System Details Activities (1) Areas (1) Regions (0) Abstract: Following a spectacular mud volcano eruption in 1951, the Lake City geothermal system has been intermittently explored for 44 years. A discovery well was drilled 30 years ago. The geothermal system is associated with a two mile-long, north-south trending, abnormally complex section of the active Surprise Valley fault zone that has uplifted the

126

Geothermal Progress Monitor: system status and operational experience  

SciTech Connect

The Geothermal Progress Monitor (GPM) is an information system designed and implemented by the MITRE Corporation on behalf of the Division of Geothermal and Hydropower Technology (DGHT, formerly Division of Geothermal Energy) of the US Department of Energy (DOE). Its purpose is to keep track of and to report significant events and trends in the US geothermal industry and the federal geothermal program. The information sources of the GPM system are paper and computerized files maintained by a number of organizations throughout the United States. Trade and technical publications are also used to supplement the information-gathering network. Periodic reports from the GPM system consist mainly of manual and computerized analyses of the collected data. In addition, significant events and activities are usually highlighted. The GPM serves a dual function for DGHT and other members of the Interagency Geothermal Coordinating Council (IGCC). It supports effective management of the federal geothermal program and it provides information for executive, legislative, statutory, and public needs. This paper is a report on the current status of the GPM system and a summary of MITRE's operational experience during calendar year 1981 and the first quarter of 1982. It includes a description of the required output and the mechanism by which the information is gathered, integrated, and published as a Geothermal Progress Monitor Report.

Gerstein, R.E.; Kenkeremath, L.D.; Murphy, M.B.; Entingh, D.J.

1982-03-01T23:59:59.000Z

127

State Geological Survey Contributions to the National Geothermal Data System  

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

Project objectives: Deploy and populate the National Geothermal Data System (NGDS) with state-specific data by creating a national, sustainable, distributed, interoperable network of state geological survey-based data providers that will develop, collect, serve, and maintain geothermal-relevant data that operates as an integral compliant component of NGDS.

128

A Demonstration System for Capturing Geothermal Energy from Mine Waters  

Open Energy Info (EERE)

System for Capturing Geothermal Energy from Mine Waters System for Capturing Geothermal Energy from Mine Waters beneath Butte, MT Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title A Demonstration System for Capturing Geothermal Energy from Mine Waters beneath Butte, MT Project Type / Topic 1 Recovery Act - Geothermal Technologies Program: Ground Source Heat Pumps Project Type / Topic 2 Topic Area 1: Technology Demonstration Projects Project Description Butte, Montana, like many other mining towns that developed because of either hard-rock minerals or coal, is underlain by now-inactive water-filled mines. In Butte's case, over 10,000 miles of underground workings have been documented, but as in many other mining communities these waters are regarded as more of a liability than asset. Mine waters offer several advantages:

129

Regional Systems Development for Geothermal Energy Resources Pacific Region  

Open Energy Info (EERE)

Systems Development for Geothermal Energy Resources Pacific Region Systems Development for Geothermal Energy Resources Pacific Region (California and Hawaii). Task 3: water resources evaluation. Topical report Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Regional Systems Development for Geothermal Energy Resources Pacific Region (California and Hawaii). Task 3: water resources evaluation. Topical report Details Activities (1) Areas (1) Regions (0) Abstract: The fundamental objective of the water resources analysis was to assess the availability of surface and ground water for potential use as power plant make-up water in the major geothermal areas of California. The analysis was concentrated on identifying the major sources of surface and ground water, potential limitations on the usage of this water, and the

130

Chemical Geothermometers And Mixing Models For Geothermal Systems | Open  

Open Energy Info (EERE)

Geothermometers And Mixing Models For Geothermal Systems Geothermometers And Mixing Models For Geothermal Systems Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Chemical Geothermometers And Mixing Models For Geothermal Systems Details Activities (1) Areas (1) Regions (0) Abstract: Qualitative chemical geothermometers utilize anomalous concentrations of various "indicator" elements in groundwaters, streams, soils, and soil gases to outline favorable places to explore for geothermal energy. Some of the qualitative methods, such as the delineation of mercury and helium anomalies in soil gases, do not require the presence of hot springs or fumaroles. However, these techniques may also outline fossil thermal areas that are now cold. Quantitative chemical geothermometers and mixing models can provide information about present probable minimum

131

Large Scale Geothermal Exchange System for Residential, Office and Retail  

Open Energy Info (EERE)

Geothermal Exchange System for Residential, Office and Retail Geothermal Exchange System for Residential, Office and Retail Development Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Large Scale Geothermal Exchange System for Residential, Office and Retail Development Project Type / Topic 1 Recovery Act - Geothermal Technologies Program: Ground Source Heat Pumps Project Type / Topic 2 Topic Area 1: Technology Demonstration Projects Project Description RiverHeath will be a new neighborhood, with residences, shops, restaurants, and offices. The design incorporates walking trails, community gardens, green roofs, and innovative stormwater controls. A major component of the project is our reliance on renewable energy. One legacy of the land's industrial past is an onsite hydro-electric facility which formerly powered the paper factories. The onsite hydro is being refurbished and will furnish 100% of the project's electricity demand.

132

GRC Workshop: The Power of the National Geothermal Data System | Department  

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

GRC Workshop: The Power of the National Geothermal Data System GRC Workshop: The Power of the National Geothermal Data System GRC Workshop: The Power of the National Geothermal Data System October 2, 2013 (All day) Flyer for the National Geothermal Data System workshop at the Geothermal Resources Council Annual Meeting on October 2, 2013 in Las Vegas. Drilling Down: How Legacy and New Research Data Can Advance Geothermal Development-The Power of the National Geothermal Data System (NGDS) A workshop at the Geothermal Resources Council Annual Meeting in Las Vegas, Nevada Abstract: The National Geothermal Data System's (NGDS) launch in 2014 will provide open access to millions of datasets, sharing technical geothermal-relevant data across the geosciences to propel geothermal development and production forward. By aggregating findings from the Energy Department's RD&D projects

133

Enhanced Geothermal Systems Webinar | Department of Energy  

Energy Savers (EERE)

Electric Cooperative Associate, Western Area Power Administration, and U.S. Department of Energy Geothermal Technologies Office. The Webinar covered topics including federal...

134

Enhanced Geothermal Systems Demonstration Projects | Department...  

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

innovative technology development and deployment could facilitate access to 100+ GW of energy, exponentially more than today's current geothermal capacity. With EGS, we can tap...

135

Development of Enhanced Geothermal Systems Technologies Workshops...  

Energy Savers (EERE)

in the report by the Massachusetts Institute of Technology (MIT) titled The Future of Geothermal Energy (MIT 2006). Three of the presentations (in the areas of Reservoir...

136

Enhanced Geothermal Systems (EGS) R&D Program: US Geothermal Resources Review and Needs Assessment  

SciTech Connect

The purpose of this report is to lay the groundwork for an emerging process to assess U.S. geothermal resources that might be suitable for development as Enhanced Geothermal Systems (EGS). Interviews of leading geothermists indicate that doing that will be intertwined with updating assessments of U.S. higher-quality hydrothermal resources and reviewing methods for discovering ''hidden'' hydrothermal and EGS resources. The report reviews the history and status of assessment of high-temperature geothermal resources in the United States. Hydrothermal, Enhanced, and Hot Dry Rock resources are addressed. Geopressured geothermal resources are not. There are three main uses of geothermal resource assessments: (1) They inform industry and other interest parties of reasonable estimates of the amounts and likely locations of known and prospective geothermal resources. This provides a basis for private-sector decisions whether or not to enter the geothermal energy business at all, and for where to look for useful resources. (2) They inform government agencies (Federal, State, local) of the same kinds of information. This can inform strategic decisions, such as whether to continue to invest in creating and stimulating a geothermal industry--e.g., through research or financial incentives. And it informs certain agencies, e.g., Department of Interior, about what kinds of tactical operations might be required to support such activities as exploration and leasing. (3) They help the experts who are performing the assessment(s) to clarify their procedures and data, and in turn, provide the other two kinds of users with a more accurate interpretation of what the resulting estimates mean. The process of conducting this assessment brings a spotlight to bear on what has been accomplished in the domain of detecting and understanding reservoirs, in the period since the last major assessment was conducted.

Entingh, Dan; McLarty, Lynn

2000-11-30T23:59:59.000Z

137

Conceptual Models of Geothermal Systems - Introduction | Open Energy  

Open Energy Info (EERE)

Conceptual Models of Geothermal Systems - Introduction Conceptual Models of Geothermal Systems - Introduction Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Conceptual Models of Geothermal Systems - Introduction Abstract The key to the successful exploration, development (incl. drilling) and utilization of any type of geothermal system is a clear definition and understanding of the nature and characteristics of the system in question. This is best achieved through the development of a conceptual model of the system, which is a descriptive or qualitative model incorporating, and unifying, the essential physical features of the system. Conceptual models are mainly based on analysis of geological and geophysical information, temperature and pressure data, information on reservoir properties as well

138

A Geothermal District-Heating System and Alternative Energy Research...  

Open Energy Info (EERE)

District-Heating System and Alternative Energy Research Park on the NM Tech Campus Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title A...

139

Reservoir Investigations on the Hot Dry Rock Geothermal System...  

Open Energy Info (EERE)

Investigations on the Hot Dry Rock Geothermal System, Fenton Hill, New Mexico- Tracer Test Results Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference...

140

Geothermal Binary Power Generation System Using Unutilized Energy  

Science Journals Connector (OSTI)

Binary power generating system is based on the Rankine cycle with geothermal fluid as heating source and low boiling ... can generate electric power from low temperature (energy) source. Employing the binary powe...

Hiroaki Shibata; Hiroshi Oyama…

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "geothermal system cxs" 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

Enhanced Geothermal Systems (EGS) with CO2as Heat Transmission...  

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

study heat extraction from hot porous systems by injection of cold CO 2 . * Reactive chemistry experiments for CO 2 -brine-rock are being assembled (INL). 6 | US DOE Geothermal...

142

TRACING FLUID SOURCES IN THE COSO GEOTHERMAL SYSTEM USING FLUID...  

Open Energy Info (EERE)

TRACING FLUID SOURCES IN THE COSO GEOTHERMAL SYSTEM USING FLUID-INCLUSION GAS CHEMISTRY Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Proceedings:...

143

Identification of a New Blind Geothermal System with Hyperspectral Remote  

Open Energy Info (EERE)

Identification of a New Blind Geothermal System with Hyperspectral Remote Identification of a New Blind Geothermal System with Hyperspectral Remote Sensing and Shallow Temperature Measurements at Columbus Salt Marsh, Esmeralda County, Nevada Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Identification of a New Blind Geothermal System with Hyperspectral Remote Sensing and Shallow Temperature Measurements at Columbus Salt Marsh, Esmeralda County, Nevada Abstract Hyperspectral remote sensing-derived mineral maps and follow-up shallow temperature measurements were used to identify a new blind geothermal target in the Columbus Salt Marsh playa, Esmeralda County, Nevada. The hyperspectral survey was conducted with the ProSpecTIR VS2 instrument and consists of 380 km2 of 4-meter spatial resolution data acquired on October

144

A Geochemical Model Of The Platanares Geothermal System, Honduras | Open  

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 Geochemical Model Of The Platanares Geothermal System, Honduras Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Geochemical Model Of The Platanares Geothermal System, Honduras Details Activities (0) Areas (0) Regions (0) Abstract: Results of exploration drilling combined with results of geologic, geophysical, and hydrogeochemical investigations have been used to construct a geochemical model of the Platanares geothermal system, Honduras. Three coreholes were drilled, two of which produced fluids from fractured Miocene andesite and altered Cretaceous to Eocene conglomerate at

145

Engineered Geothermal Systems Energy Return On Energy Investment  

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

EGS EROI - 1 EGS EROI - 1 Engineered Geothermal Systems Energy Return On Energy Investment A.J. Mansure, Geothermal Consultant, ajm@q.com Albuquerque, NM 12/10/2012 Key Words: energy, EROI, EGS, efficiency, energy investment, energy return, input energy, energy payback, and net energy. Abstract Energy Return On Investment (EROI) is an important figure of merit for assessing the viability of energy alternatives. Too often comparisons of energy systems use "efficiency" when EROI would be more appropriate. For geothermal electric power generation, EROI is determined by the electricity delivered to the consumer compared to the energy consumed to construct, operate, and decommission the facility. Critical factors in determining the EROI of Engineered Geothermal Systems (EGS

146

Reconnaissance geophysical studies of the geothermal system in southern  

Open Energy Info (EERE)

geophysical studies of the geothermal system in southern geophysical studies of the geothermal system in southern Raft River Valley, Idaho Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Reconnaissance geophysical studies of the geothermal system in southern Raft River Valley, Idaho Details Activities (4) Areas (1) Regions (0) Abstract: Gravity, aeromagnetic, and telluric current surveys in the southern Raft River have been used to infer the structure and the general lithology underlying the valley. The gravity data indicate the approximate thickness of the Cenozoic rocks and location of the larger normal faults, and the aeromagnetic data indicate the extent of the major Cenozoic volcanic units. The relative ellipse area contour map compiled from the telluric current survey generally conforms to the gravity map except for

147

The Monitoring and Evaluation of Geothermal Systems.  

E-Print Network (OSTI)

??With the heightened importance of green engineering in today’s society, harnessing the Earth’s internal energy has become ever more important. Specifically, the use of geothermal… (more)

Maynard, Whitney E.

2010-01-01T23:59:59.000Z

148

Podhale (South Poland) geothermal district heating system  

Science Journals Connector (OSTI)

The search for geothermal resources in the Podhale Region began in the late 1980s. The Banska IG-1 well, drilled in 1981, served as the starting point for an expansion of those research activities. A geothermal pilot plant was put into operation in 1993. During that same year the company Geotermia Podhalanska (GP) was founded and the pilot project, including the first distribution network for 20 customers, was constructed. After the initial phase of project implementation from 1993 to 1995, during which a pilot plant was constructed and put into operation for demonstration purposes by the Polish Academy for Sciences using the first geothermal doublet (a production well in Banska Nizna and a reinjection well in Bialy Dunajec), and connection of 200 households through a small district heating network, the World Bank got involved in the geothermal district heating project. Since then, significant progress has been made, increasing the overall heat capacity and geothermal output as well as the service area to the City of Zakopane, approx. 14 km from the production wells. In November 2001 the first geothermal heat was delivered to customers in Zakopane.

Piotr Dlugosz

2003-01-01T23:59:59.000Z

149

Geothermal heating system for the Children's Museum of Utah  

SciTech Connect

The results of a study to determine the engineering and economic feasibility of using the Wasatch Hot Spring resource for space heating of the Children's Library building are presented. The Wasatch Hot Spring with a reported flow of about 63 gpm (240 l/min) at an average temperature of 104/sup 0/F is not capable of furnishing the needed heat for the Children's Museum building. The underground paths along which the thermal waters flow to their outlets at the Warm Springs Fault are not presently known. It is possible if the thermal water ascends from the deep layers of the earth along the Warm Springs Fault that increased geothermal flow at a higher temperature can be produced by drilling into the fault. Assuming that sufficient geothermal fluid quantity is produced by drilling in the area, an analysis is made of a geothermal heating system for the building based on different fluid temperatures. It is assumed that the present and planned heating systems be left intact with the gas fired boilers taking over during cold periods when the geothermal system fails to provide sufficient heat. Economic analysis shows that the geothermal system is very attractive, even for the lowest geothermal fluid temperature considered (110/sup 0/F).

Karlsson, T.

1984-07-01T23:59:59.000Z

150

High-Temperature-High-Volume Lifting For Enhanced Geothermal Systems  

Open Energy Info (EERE)

Temperature-High-Volume Lifting For Enhanced Geothermal Systems Temperature-High-Volume Lifting For Enhanced Geothermal Systems Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title High-Temperature-High-Volume Lifting For Enhanced Geothermal Systems Project Type / Topic 1 Recovery Act: Enhanced Geothermal Systems Component Research and Development/Analysis Project Type / Topic 2 High-Temperature-High-Volume Lifting Project Description The proposed scope of work is divided into three Phases. Overall system requirements will be established in Phase 1, along with an evaluation of existing lifting system capability, identification of technology limitations, and a conceptual design of an overall lifting system. In developing the system components in Phase 2, component-level tests will be conducted using GE facilities. Areas of development will include high-temperature drive system materials, journal and thrust bearings, and corrosion and erosion-resistant lifting pump components. Finally, in Phase 3, the overall lab-scale lifting system will be demonstrated in a flow loop that will be constructed at GE Global Research.

151

Issues surrounding fracturing of geothermal systems - predicting thermal conductivity of reservoir rocks and evaluating performance of fracture proppants.  

E-Print Network (OSTI)

??Traditional geothermal systems have been limited to geologic systems in which elevated temperatures, abundant water, and high porosity and permeability are found. Engineered geothermal systems… (more)

Brinton, Daniel

2011-01-01T23:59:59.000Z

152

Microhole arrays for improved heat mining from enhanced geothermal systems  

E-Print Network (OSTI)

Plant for Exploiting Geothermal Energy, US Patent Morris,2006. The Future of Geothermal Energy – Impact of Enhanceda c t Keywords: Geothermal energy Heat extraction Microholes

Finsterle, S.

2014-01-01T23:59:59.000Z

153

Seismic Technology Adapted to Analyzing and Developing Geothermal Systems  

Open Energy Info (EERE)

Technology Adapted to Analyzing and Developing Geothermal Systems Technology Adapted to Analyzing and Developing Geothermal Systems Below Surface-Exposed High-Velocity Rocks Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Seismic Technology Adapted to Analyzing and Developing Geothermal Systems Below Surface-Exposed High-Velocity Rocks Project Type / Topic 1 Recovery Act: Enhanced Geothermal Systems Component Research and Development/Analysis Project Type / Topic 2 Geophysical Exploration Technologies Project Description Historically, areas where the Earth surface is covered by an exposed high-velocity rock layer have been locations where conventional, single-component, seismic P-waves have failed to provide usable geological information. The research will use new seismic sources that emphasize shear waves and new seismic data-acquisition technology based on cable-free data recording to acquire seismic research data across two sites covered with surface-exposed highvelocity rocks. Research tasks will involve acquiring, processing, and interpreting both conventional seismic data and multicomponent seismic data. Scientists at BEG will analyze well logs, cores, and reservoir test data to construct geological models of the targeted geology across each study site.

154

Development of Exploration Methods for Engineered Geothermal Systems  

Open Energy Info (EERE)

Exploration Methods for Engineered Geothermal Systems Exploration Methods for Engineered Geothermal Systems through Integrated Geophysical, Geologic and Geochemical Interpretation. Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Development of Exploration Methods for Engineered Geothermal Systems through Integrated Geophysical, Geologic and Geochemical Interpretation. Project Type / Topic 1 Recovery Act: Enhanced Geothermal Systems Component Research and Development/Analysis Project Type / Topic 2 Geophysical Exploration Technologies Project Description A comprehensive, interdisciplinary approach is proposed using existing geophysical exploration technology coupled with new seismic techniques and subject matter experts to determine the combination of geoscience data that demonstrates the greatest potential for identifying EGS drilling targets using non-invasive techniques. This proposed exploration methodology is expected to increase spatial resolution and reduce the non-uniqueness that is inherent in geological data, thereby reducing the uncertainty in the primary selection criteria for identifying EGS drilling targets. These criteria are, in order of importance: (1) temperatures greater than 200-250°C at 1-5 km depth; (2) rock type at the depth of interest, and; (3) stress regime.

155

National Geothermal Data System Demo 01-28-14 | Department of...  

Energy Savers (EERE)

National Geothermal Data System Demo 01-28-14 National Geothermal Data System Demo 01-28-14 ngds-webinar-azgs.pdf More Documents & Publications How to Utilize the National...

156

Geology and alteration of the Raft River geothermal system, Idaho | Open  

Open Energy Info (EERE)

alteration of the Raft River geothermal system, Idaho alteration of the Raft River geothermal system, Idaho Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Geology and alteration of the Raft River geothermal system, Idaho Details Activities (1) Areas (1) Regions (0) Abstract: analcime; Cassia County Idaho; Cenozoic; chlorite; chlorite group; clay minerals; economic geology; exploration; framework silicates; geothermal energy; Idaho; illite; kaolinite; laumontite; montmorillonite; Neogene; Precambrian; Raft Formation; Raft River KGRA; Salt Lake Formation; sheet silicates; silicates; Tertiary; United States; wairakite; wells; zeolite group Author(s): Blackett, R.E.; Kolesar, P.T. Published: Geothermal Resource Council Transactions 1983, 1/1/1983 Document Number: Unavailable DOI: Unavailable

157

Standard Guide for Specifying Thermal Performance of Geothermal Power Systems  

E-Print Network (OSTI)

1.1 This guide covers power plant performance terms and criteria for use in evaluation and comparison of geothermal energy conversion and power generation systems. The special nature of these geothermal systems makes performance criteria commonly used to evaluate conventional fossil fuel-fired systems of limited value. This guide identifies the limitations of the less useful criteria and defines an equitable basis for measuring the quality of differing thermal cycles and plant equipment for geothermal resources. 1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

American Society for Testing and Materials. Philadelphia

2000-01-01T23:59:59.000Z

158

Exergoeconomic evaluation on the optimum heating circuit system of Simav geothermal district heating system  

Science Journals Connector (OSTI)

Simav is one of the most important 15 geothermal areas in Turkey. It has several geothermal resources with the mass flow rate ranging from 35 to 72 kg/s and temperature from 88 to 148 °C. Hence, these geothermal resources are available to use for several purposes, such as electricity generation, district heating, greenhouse heating, and balneological purposes. In Simav, the 5000 residences are heated by a district heating system in which these geothermal resources are used. Beside this, a greenhouse area of 225,000 m2 is also heated by geothermal. In this study, the working conditions of the Simav geothermal district heating system have been optimized. In this paper, the main characteristics of the system have been presented and the impact of the parameters of heating circuit on the system are investigated by the means of energy, exergy, and life cycle cost (LCC) concepts. As a result, the optimum heating circuit has been determined as 60/49 °C.

Oguz Arslan; M.Arif Ozgur; Ramazan Kose; Abtullah Tugcu

2009-01-01T23:59:59.000Z

159

First Commercial Success for Enhanced Geothermal Systems (EGS) Spells Exponential Growth for Geothermal Energy  

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

The Obama Administration's all-of-the-above energy strategy took a leap forward today with the Energy Department's announcement recognizing the nation's first commercial enhanced geothermal system (EGS) project to supply electricity to the grid. This landmark accomplishment follows two other major DOE-funded technical achievements focused on demonstrating the commercial viability of EGS: The Calpine EGS demonstration at The Geysers in Middletown, California and the AltaRock project at Newberry Volcano near Bend, Oregon.

160

New energy and exergy parameters for geothermal district heating systems  

Science Journals Connector (OSTI)

This paper introduces four new parameters, namely energetic renewability ratio, exergetic renewability ratio, energetic reinjection ratio, and exergetic reinjection ratio for geothermal district energy systems. These parameters are applied to Edremit Geothermal District Heating System (GDHS) in Balikesir, Turkey for daily, monthly and yearly assessments and their variations are studied. In addition, the actual data are regressed to obtain some applied correlations for practical use. Some results follow: (i) Both energetic and exergetic renewability ratios decrease with decreasing temperature in heating season and increasing temperature in the summer. (ii) Both energetic and exergetic reinjection ratios increase with decreasing temperature for heating season and increase with increasing temperature for summer season.

C. Coskun; Zuhal Oktay; I. Dincer

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "geothermal system cxs" 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

Geothermal System Saves Dollars, Makes Sense for Maryland Family |  

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

System Saves Dollars, Makes Sense for Maryland Family System Saves Dollars, Makes Sense for Maryland Family Geothermal System Saves Dollars, Makes Sense for Maryland Family April 16, 2010 - 5:15pm Addthis A 36-foot-tall drill was needed to install the geothermal system at the Gearon’s house in Derwood, MD. | Photo courtesy of Chris Gearon | A 36-foot-tall drill was needed to install the geothermal system at the Gearon's house in Derwood, MD. | Photo courtesy of Chris Gearon | Lindsay Gsell "At the end of the day, it cost us about the same as if we just replaced our furnace and AC with another furnace and AC, but the big difference is that we're not spending $3,000 on oil bills anymore." Chris Gearon, Derwood, MD resident who recently installed a geothermal system to heal and cool his home Chris Gearon's 24-year old oil furnace was tired. What happened if the

162

GTP Adds Meeting on the National Geothermal Data System Project to Peer Review  

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

The design of the National Geothermal Data System (NGDS) was initiated in early fiscal year 2010 to address capturing and providing geothermal data to users -- researchers, industry, state and federal agencies, and the public.

163

Strategies For Detecting Hidden Geothermal Systems By Near-Surface Gas  

Open Energy Info (EERE)

Strategies For Detecting Hidden Geothermal Systems By Near-Surface Gas Strategies For Detecting Hidden Geothermal Systems By Near-Surface Gas Monitoring Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Strategies For Detecting Hidden Geothermal Systems By Near-Surface Gas Monitoring Details Activities (6) Areas (1) Regions (0) Abstract: Hidden geothermal systems are those systems above which hydrothermal surface features (e.g., hot springs, fumaroles, elevated ground temperatures, hydrothermal alteration) are lacking. Emissions of moderate to low solubility gases (e.g., CO2, CH4, He) may be one of the primary near-surface signals from these systems. Detection of anomalous gas emissions related to hidden geothermal systems may therefore be an important tool to discover new geothermal resources. This study investigates the potential for CO2 detection and monitoring in the

164

Energy Return On Investment of Engineered Geothermal Systems Data  

SciTech Connect

The project provides an updated Energy Return on Investment (EROI) for Enhanced Geothermal Systems (EGS). Results incorporate Argonne National Laboratory's Life Cycle Assessment and base case assumptions consistent with other projects in the Analysis subprogram. EROI is a ratio of the energy delivered to the consumer to the energy consumed to build, operate, and decommission the facility. EROI is important in assessing the viability of energy alternatives. Currently EROI analyses of geothermal energy are either out-of-date, of uncertain methodology, or presented online with little supporting documentation. This data set is a collection of files documenting data used to calculate the Energy Return On Investment (EROI) of Engineered Geothermal Systems (EGS) and erratum to publications prior to the final report. Final report is available from the OSTI web site (http://www.osti.gov/geothermal/). Data in this collections includes the well designs used, input parameters for GETEM, a discussion of the energy needed to haul materials to the drill site, the baseline mud program, and a summary of the energy needed to drill each of the well designs. EROI is the ratio of the energy delivered to the customer to the energy consumed to construct, operate, and decommission the facility. Whereas efficiency is the ratio of the energy delivered to the customer to the energy extracted from the reservoir.

Chip Mansure

2012-01-01T23:59:59.000Z

165

New Geothermal Data System Could Open Up Clean-Energy Reserves  

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

New geothermal data could open up clean energy reserves nationwide. Scientific American reported that the National Geothermal Data System is helping to isolate geothermal prospects, with the goal of fully profiling geologic and geophysical aspects of these deep energy reserves, which will reduce costly investment by better targeting wells.

166

36Cl/Cl ratios in geothermal systems- preliminary measurements from the  

Open Energy Info (EERE)

Cl/Cl ratios in geothermal systems- preliminary measurements from the Cl/Cl ratios in geothermal systems- preliminary measurements from the Coso Field Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: 36Cl/Cl ratios in geothermal systems- preliminary measurements from the Coso Field Details Activities (1) Areas (1) Regions (0) Abstract: The {sub 36}Cl/Cl isotopic composition of chlorine in geothermal systems can be a useful diagnostic tool in characterizing hydrologic structure, in determining the origins and age of waters within the systems, and in differentiating the sources of chlorine (and other solutes) in the thermal waters. The {sub 36}Cl/Cl values for several geothermal water samples and reservoir host rock samples from the Coso, California geothermal field have been measured for these purposes. The results

167

MATHEMATICAL MODELING OF THE BEHAVIOR OF GEOTHERMAL SYSTEMS UNDER EXPLOITATION  

E-Print Network (OSTI)

U. S. Department of Energy, Geothermal direct h e a t a p pU S Department of Energy, Geothermal Energy Division, 87,homes are heated by geothermal energy, and there are plans t

Bodvarsson, G.S.

2010-01-01T23:59:59.000Z

168

MATHEMATICAL MODELING OF THE BEHAVIOR OF GEOTHERMAL SYSTEMS UNDER EXPLOITATION  

E-Print Network (OSTI)

h e Nordic Symposium on Geothermal Energy, (May 29-31) 1978.P. , and C. O t t e , Geothermal energy, Stanford Universityresources, i n Geothermal Energy, P. Kruger and C. O t t e (

Bodvarsson, G.S.

2010-01-01T23:59:59.000Z

169

Baseline System Costs for 50.0 MW Enhanced Geothermal System -- A Function  

Open Energy Info (EERE)

Baseline System Costs for 50.0 MW Enhanced Geothermal System -- A Function Baseline System Costs for 50.0 MW Enhanced Geothermal System -- A Function of: Working Fluid, Technology, and Location Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Baseline System Costs for 50.0 MW Enhanced Geothermal System -- A Function of: Working Fluid, Technology, and Location Project Type / Topic 1 Recovery Act: Enhanced Geothermal Systems Component Research and Development/Analysis Project Type / Topic 2 Geothermal Analysis Project Description This effort will support the expansion of Enhanced Geothermal Systems (EGS), supporting DOE Strategic Themes of "energy security" and sub goal of "energy diversity"; reducing the Nation's dependence on foreign oil while improving our environment. A 50 MW has been chosen as a design point, so that the project may also assess how different machinery approaches will change the costing - it is a mid point in size where multiple solutions exist that will allow the team to effectively explore the options in the design space and understand the cost.

170

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.

171

Engineered Geothermal Systems Energy Return On Energy Investment  

SciTech Connect

Energy Return On Investment (EROI) is an important figure of merit for assessing the viability of energy alternatives. Too often comparisons of energy systems use â??efficiencyâ? when EROI would be more appropriate. For geothermal electric power generation, EROI is determined by the electricity delivered to the consumer compared to the energy consumed to construct, operate, and decommission the facility. Critical factors in determining the EROI of Engineered Geothermal Systems (EGS) are examined in this work. These include the input energy embodied into the system. Embodied energy includes the energy contained in the materials, as well as, that consumed in each stage of manufacturing from mining the raw materials to assembling the finished system. Also critical are the system boundaries and value of the energy â?? heat is not as valuable as electrical energy. The EROI of an EGS depends upon a number of factors that are currently unknown, for example what will be typical EGS well productivity, as well as, reservoir depth, temperature, and temperature decline rate. Thus the approach developed is to consider these factors as parameters determining EROI as a function of number of wells needed. Since the energy needed to construct a geothermal well is a function of depth, results are provided as a function of well depth. Parametric determination of EGS EROI is calculated using existing information on EGS and US Department of Energy (DOE) targets and is compared to the â??minimumâ? EROI an energy production system should have to be an asset rather than a liability.

Mansure, A J

2012-12-10T23:59:59.000Z

172

Demonstration of an Enhanced Geothermal System at the Northwest...  

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

Bradys Hot Springs, Nevada Detecting Fractures Using Technology at High Temperatures and Depths - Geothermal Ultrasonic Fracture Imager (GUFI); 2010 Geothermal Technology Program...

173

Enhanced Geothermal System (EGS) Fact Sheet | Department of Energy  

Energy Savers (EERE)

The Geysers Geothermal Power Plant in California Calpine Staff Run Tests at The Geysers Geothermal Power Plant in California The EGS fact sheet provides an overview of this...

174

A key review on performance improvement aspects of geothermal district heating systems and applications  

Science Journals Connector (OSTI)

This paper deals with a comprehensive analysis and discussion of geothermal district heating systems and applications. In this regard, case studies are presented to study the thermodynamic aspects in terms of energy and exergy and performance improvement opportunities of three geothermal district heating systems, namely (i) Balcova geothermal district heating system (BGDHS), (ii) Salihli geothermal district heating system (SGDHS), and (iii) Gonen geothermal district heating system (GGDHS) installed in Turkey. Energy and exergy modeling of geothermal district heating systems for system analysis and performance evaluation are given, while their performances are evaluated using energy and exergy analysis method. Energy and exergy specifications are presented in tables. In the analysis, the actual system operational data are utilized. In comparison of the local three district heating systems with each other, it is found that the SGDHS has highest energy efficiency, while the GGDHS has highest exergy efficiency.

Leyla Ozgener; Arif Hepbasli; Ibrahim Dincer

2007-01-01T23:59:59.000Z

175

Conventional and advanced exergoeconomic analyses of geothermal district heating systems  

Science Journals Connector (OSTI)

Abstract The present study deals with analyzing, assessing and comparing conventional and advanced exergoeconomic analyses to identify the direction and potential for energy savings of a geothermal district heating system in future conditions/projections. As a real case study, the Afyon geothermal district heating system in Afyonkarahisar, Turkey, is considered while its actual operational thermal data on 8 February 2011 are utilized in the analysis, which is based on the specific exergy costing method. In this study for the first time, based on the concepts of avoidable/unavoidable and endogenous/exogenous parts, cost rates associated with both exergy destruction and capital investment of the geothermal district heating system are determined first, and the obtained results are then evaluated. The results indicate that the internal design changes play a more essential role in determining the cost of each component. The cost rate of unavoidable part within the components of the system is lower than that of the avoidable one. For the overall system, the value for the conventional exergoeconomic factor is determined to be 5.53% while that for the modified one is calculated to be 9.49%. As a result, the advanced exergoeconomic analysis makes more sense given the additional information in splitting process of the components.

Ali Keçeba?; Arif Hepbasli

2014-01-01T23:59:59.000Z

176

Thermally conductive cementitious grout for geothermal heat pump systems  

DOE Patents (OSTI)

A thermally conductive cement-sand grout for use with a geothermal heat pump system. The cement sand grout contains cement, silica sand, a superplasticizer, water and optionally bentonite. The present invention also includes a method of filling boreholes used for geothermal heat pump systems with the thermally conductive cement-sand grout. The cement-sand grout has improved thermal conductivity over neat cement and bentonite grouts, which allows shallower bore holes to be used to provide an equivalent heat transfer capacity. In addition, the cement-sand grouts of the present invention also provide improved bond strengths and decreased permeabilities. The cement-sand grouts can also contain blast furnace slag, fly ash, a thermoplastic air entraining agent, latex, a shrinkage reducing admixture, calcium oxide and combinations thereof.

Allan, Marita (Old Field, NY)

2001-01-01T23:59:59.000Z

177

Readily Available Data Help to Overcome Geothermal Deployment...  

Energy Savers (EERE)

Articles Energy Department Announces National Geothermal Data System to Accelerate Geothermal Energy Development The National Geothermal Data System deploys free,...

178

Experience with Small-scale Geothermal Energy Systems  

Science Journals Connector (OSTI)

ABSTRACT From an economic perspective, small-scale geothermal heating systems and ground water source heat pump schemes can be assessed using similar approaches. In particular, assessment shows that heat pump schemes can be economic in the U.K., especially for buildings with moderately high and continuous heating demand, with access to shallow, free-flowing ground water, in areas where prices for conventional fuels are high.

N.D. Mortimer

1984-01-01T23:59:59.000Z

179

Geothermal Development and the Use of Categorical Exclusions (Poster)  

SciTech Connect

The federal environmental review process under the National Environmental Policy Act of 1969 (NEPA) can be complex and time consuming. Currently, a geothermal developer may have to complete the NEPA process multiple times during the development of a geothermal project. One mechanism to reduce the timeframe of the federal environmental review process for activities that do not have a significant environmental impact is the use of Categorical Exclusions (CXs), which can exempt projects from having to complete an Environmental Assessment or Environmental Impact Statement. This study focuses primarily on the CX process and its applicability to geothermal exploration. In this paper, we Provide generalized background information on CXs, including previous NEPA reports addressing CXs, the process for developing CXs, and the role of extraordinary circumstances; Examine the history of the Bureau of Land Management's (BLM) geothermal CXs;Compare current CXs for oil, gas, and geothermal energy; Describe bills proposing new statutory CXs; Examine the possibility of standardizing geothermal CXs across federal agencies; and Present analysis from the Geothermal NEPA Database and other sources on the potential for new geothermal exploration CXs. As part of this study, we reviewed Environmental Assessments (EAs) conducted in response to 20 geothermal exploration drilling permit applications (Geothermal Drilling Permits or Notices of Intents) since the year 2001, the majority of which are from the last 5 years. All 20 EAs reviewed for this study resulted in a Finding of No Significant Impact (FONSI). While many of these FONSI's involved proponent proposed or federal agency required mitigation, this still suggests it may be appropriate to create or expand an exploration drilling CX for geothermal, which would have a significant impact on reducing geothermal exploration timelines and up-front costs. Ultimately, federal agencies tasked with permitting and completing environmental reviews for geothermal exploration drilling activities and/or legislative representatives are the responsible parties to discuss the merits and implementation of new or revised CXs for geothermal development.

Levine, A.; Young, K. R.

2014-09-01T23:59:59.000Z

180

Geothermal district heating system feasibility analysis, Thermopolis, Wyoming  

SciTech Connect

The purpose of this study is to determine the technical and economic feasibility of constructing and operating a district heating system to serve the residential, commercial, and public sectors in Thermopolis. The project geothermal resource assessment, based on reviews of existing information and data, indicated that substantial hot water resources likely exist in the Rose Dome region 10 miles northeast of Thermopolis, and with quantities capable of supporting the proposed geothermal uses. Preliminary engineering designs were developed to serve the space heating and hot water heating demands for buildings in the Thermopolis-East Thermopolis town service area. The heating district design is based on indirect geothermal heat supply and includes production wells, transmission lines, heat exchanger units, and the closed loop distribution and collection system necessary to serve the individual customers. Three options are presented for disposal of the cooled waters-reinjection, river disposal, and agricultural reuse. The preliminary engineering effort indicates the proposed system is technically feasible. The design is sized to serve 1545 residences, 190 businesses, and 24 public buildings. The peak design meets a demand of 128.2 million Btu at production rates of 6400 gpm.

Goering, S.W.; Garing, K.L.; Coury, G.; Mickley, M.C.

1982-04-26T23:59:59.000Z

Note: This page contains sample records for the topic "geothermal system cxs" 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

Geology of Injection Well 46A-19RD in the Coso Enhanced Geothermal Systems  

Open Energy Info (EERE)

of Injection Well 46A-19RD in the Coso Enhanced Geothermal Systems of Injection Well 46A-19RD in the Coso Enhanced Geothermal Systems Experiment Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Geology of Injection Well 46A-19RD in the Coso Enhanced Geothermal Systems Experiment Details Activities (1) Areas (1) Regions (0) Abstract: The Coso Geothermal Field is a large, high temperature system located in California on the western edge of the Basin and Range province. Well 46A-19RD, located in the southwestern portion of this field is currently the focus of a DOE-funded Enhanced Geothermal Systems (EGS) project. Petrologic and petrographic investigations of the well show that quartz diorite and granodiorite are dominant lithologies. Dikes of granophyre, containing phenocrysts of plagioclase, potassium feldspar, and

182

An Updated Numerical Model Of The Larderello-Travale Geothermal System,  

Open Energy Info (EERE)

Of The Larderello-Travale Geothermal System, Of The Larderello-Travale Geothermal System, Italy Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: An Updated Numerical Model Of The Larderello-Travale Geothermal System, Italy Details Activities (0) Areas (0) Regions (0) Abstract: Larderello-Travale is one of the few geothermal systems in the world that is characterized by a reservoir pressure much lower than hydrostatic. This is a consequence of its natural evolution from an initial liquid-dominated to the current steam-dominated system. Beneath a nearly impermeable cover, the geothermal reservoir consists of carbonate-anhydrite formations and, at greater depth, by metamorphic rocks. The shallow reservoir has temperatures in the range of 220-250°C, and pressures of about 20 bar at a depth of 1000 m, while the deep metamorphic reservoir has

183

300°C Capable Electronics Platform and Temperature Sensor System For Enhanced Geothermal Systems  

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

Project objectives: Enable geothermal wellbore monitoring through the development of SiC based electronics and ceramic packaging capable of sustained operation at temperatures up to 300?C and 10 km depth. Demonstrate the technology with a temperature sensor system.

184

E-Print Network 3.0 - active geothermal systems Sample Search...  

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

February 1-3, 2010 Summary: of geothermal energy in Turkey has focused mainly on district heating. The first of these systems came on line... , solar, etc. Geological...

185

Systems for Electrical Power from Coproduced and Low Temperature Geothermal Resources  

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

Presentation about Systems for Electrical Power from Coproduced and Low Temperature Geothermal Resources includes background, results and discussion, future plans and conclusion.

186

IEA-GIA ExCo- National Geothermal Data System and Online Tools  

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

National Geothermal Data System presentation by Jay Nathwani at the September 30, 2011 IEA-GIA ExCo conference in London.

187

Intergrating Magnetotellurics, Soil Gas Geochemistry and Structural Analysis to Identify Hidden, High Enthalpy, Extensional Geothermal Systems  

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

Intergrating Magnetotellurics, Soil Gas Geochemistry and Structural Analysis to Identify Hidden, High Enthalpy, Extensional Geothermal Systems presentation at the April 2013 peer review meeting held in Denver, Colorado.

188

Optimizing parameters for predicting the geochemical behavior and performance of discrete fracture networks in geothermal systems  

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

Optimizing parameters for predicting the geochemical behavior and performance of discrete fracture networks in geothermal systems presentation at the April 2013 peer review meeting held in Denver, Colorado.

189

Reservoir-Stimulation Optimization with Operational Monitoring for Creation of Enhanced Geothermal Systems  

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

Reservoir-Stimulation Optimization with Operational Monitoring for Creation of Enhanced Geothermal Systems presentation at the April 2013 peer review meeting held in Denver, Colorado.

190

Development of Advanced Thermal-Hydrological-Mechanical-Chemical (THMC) Modeling Capabilities for Enhanced Geothermal Systems  

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

Development of Advanced Thermal-Hydrological-Mechanical-Chemical (THMC) Modeling Capabilities for Enhanced Geothermal Systems presentation at the April 2013 peer review meeting held in Denver, Colorado.

191

Advanced Heat/Mass Exchanger Technology for Geothermal and solar Renewable Energy Systems  

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

Advanced Heat/Mass Exchanger Technology for Geothermal and solar Renewable Energy Systems presentation at the April 2013 peer review meeting held in Denver, Colorado.

192

Enhanced Geothermal Systems (EGS) with CO2as Heat Transmission Fluid  

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

The overall objective of the research is to explore the feasibility of operating enhanced geothermal systems (EGS) with CO2as heat transmission fluid.

193

DOE REAL-TIME SEISMIC MONITORING AT ENHANCED GEOTHERMAL SYSTEM SITES | Open  

Open Energy Info (EERE)

REAL-TIME SEISMIC MONITORING AT ENHANCED GEOTHERMAL SYSTEM SITES REAL-TIME SEISMIC MONITORING AT ENHANCED GEOTHERMAL SYSTEM SITES Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: DOE REAL-TIME SEISMIC MONITORING AT ENHANCED GEOTHERMAL SYSTEM SITES Details Activities (6) Areas (6) Regions (0) Abstract: Lawrence Berkeley National Laboratory (LBNL) at the direction of the United States Department of Energy (DOE) Geothermal Technologies EGS Program is installing, operating, and/or interfacing seismic arrays at multiple Enhanced Geothermal Systems (EGS) sites. The overall goal is to gather high resolution seismicity data before, during and after stimulation activities at the EGS projects. This will include both surface and borehole deployments (as necessary in available boreholes) to provide high quality

194

Active Geothermal Systems And Associated Gold Deposits In The Great Basin |  

Open Energy Info (EERE)

Geothermal Systems And Associated Gold Deposits In The Great Basin Geothermal Systems And Associated Gold Deposits In The Great Basin Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Active Geothermal Systems And Associated Gold Deposits In The Great Basin Details Activities (0) Areas (0) Regions (0) Abstract: In western North America, a number of geothermal systems derive their heat from magmas or cooling intrusions. The interior of the Great Basin however, is characterized by widespread amagmatic geothermal activity that owes its existence to high crustal heat flow and active extensional tectonics. Both the magmatically heated and extensional fluid types in the Great Basin have recently, or are currently, depositing gold. Quaternary to Pliocene-aged gold deposits with adjacent high-temperature (≤ 150°C)

195

A Geothermal District-Heating System and Alternative Energy Research Park  

Open Energy Info (EERE)

Geothermal District-Heating System and Alternative Energy Research Park Geothermal District-Heating System and Alternative Energy Research Park on the NM Tech Campus Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title A Geothermal District-Heating System and Alternative Energy Research Park on the NM Tech Campus Project Type / Topic 1 Recovery Act: Geothermal Technologies Program Project Type / Topic 2 Geothermal Energy Production from Low Temperature Resources, Coproduced Fluids from Oil and Gas Wells, and Geopressured Resources Project Type / Topic 3 Low Temperature Resources Project Description With prior support from the Department of Energy (GRED III Program), New Mexico Institute of Mining and Technology (NM Tech) has established that this resource likely has sufficient permeability (3000 Darcies) and temperatures (80-112 oC) to develop a campus-wide district heating system.

196

Energy Return On Investment of Engineered Geothermal Systems Data  

DOE Data Explorer (OSTI)

EROI is a ratio of the energy delivered to the consumer to the energy consumed to build, operate, and decommission the facility. EROI is important in assessing the viability of energy alternatives. Currently EROI analyses of geothermal energy are either out-of-date, of uncertain methodology, or presented online with little supporting documentation. This data set is a collection of files documenting data used to calculate the Energy Return On Investment (EROI) of Engineered Geothermal Systems (EGS) and erratum to publications prior to the final report. Final report is available from the OSTI web site (http://www.osti.gov/geothermal/). Data in this collections includes the well designs used, input parameters for GETEM, a discussion of the energy needed to haul materials to the drill site, the baseline mud program, and a summary of the energy needed to drill each of the well designs. EROI is the ratio of the energy delivered to the customer to the energy consumed to construct, operate, and decommission the facility. Whereas efficiency is the ratio of the energy delivered to the customer to the energy extracted from the reservoir.

Mansure, Chip

197

Pinpointing America's Geothermal Resources with Open Source Data  

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

National Geothermal Data System addresses barriers to geothermal deployment by aggregating millions of geoscience datapoints and legacy geothermal research into a nationwide system that serves the geothermal community.

198

Enhanced Geothermal Systems | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

and performance Advanced drilling systems Well stimulation technologies Advanced fracture characterization technologies Induced seismic monitoring, prediction and mitigation...

199

Geophysical logging case history of the Raft River geothermal system, Idaho  

Open Energy Info (EERE)

Geophysical logging case history of the Raft River geothermal system, Idaho Geophysical logging case history of the Raft River geothermal system, Idaho Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Report: Geophysical logging case history of the Raft River geothermal system, Idaho Details Activities (1) Areas (1) Regions (0) Abstract: Drilling to evaluate the geothermal resource in the Raft River Valley began in 1974 and resulted in the discovery of a geothermal reservoir at a depth of approximately 1523 m (500 ft). Several organizations and companies have been involved in the geophysical logging program. There is no comprehensive report on the geophysical logging, nor has there been a complete interpretation. The objectives of this study are to make an integrated interpretation of the available data and compile a case history. Emphasis has been on developing a simple interpretation

200

Category:Geothermal Technologies | Open Energy Information  

Open Energy Info (EERE)

Systems (EGS) G Geothermal Direct Use G cont. GeothermalExploration Ground Source Heat Pumps H Hydrothermal System S Sedimentary Geothermal Systems Retrieved from "http:...

Note: This page contains sample records for the topic "geothermal system cxs" 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

Exergoeconomic analysis of geothermal district heating systems: A case study  

Science Journals Connector (OSTI)

An exergoeconomic study of geothermal district heating systems through mass, energy, exergy and cost accounting analyses is reported and a case study is presented for the Salihli geothermal district heating system (SGDHS) in Turkey to illustrate the present method. The relations between capital costs and thermodynamic losses for the system components are also investigated. Thermodynamic loss rate-to-capital cost ratios are used to show that, for the devices and the overall system, a systematic correlation appears to exist between capital cost and exergy loss (total or internal), but not between capital cost and energy loss or external exergy loss. Furthermore, a parametric study is conducted to determine how the ratio of thermodynamic loss rate to capital cost changes with reference temperature and to develop a correlation that can be used for practical analyses. The correlations may imply that devices in successful district heating systems such as the SGDHS are configured so as to achieve an overall optimal design, by appropriately balancing the thermodynamic (exergy-based) and economic (cost) characteristics of the overall systems and their devices.

Leyla Ozgener; Arif Hepbasli; Ibrahim Dincer; Marc A. Rosen

2007-01-01T23:59:59.000Z

202

Monitoring and Modeling Fluid Flow in a Developing Enhanced Geothermal...  

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

Seismicity; 2010 Geothermal Technology Program Peer Review Report Seismic Fracture Characterization Methods for Enhanced Geothermal Systems; 2010 Geothermal Technology...

203

MATHEMATICAL MODELING OF THE BEHAVIOR OF GEOTHERMAL SYSTEMS UNDER EXPLOITATION  

E-Print Network (OSTI)

the East Mesa geothermal f i e l d i n the Imperial valley,geothermal r e s e r v o i r s (except those i n t h e Imperial Valley

Bodvarsson, G.S.

2010-01-01T23:59:59.000Z

204

Geothermal energy systems: research perspective for domestic energy provision  

Science Journals Connector (OSTI)

This article is focused on research demand for the environmental and economic sustainable utilization of geothermal reservoirs for base load supply of heat and electricity by Enhanced Geothermal Sy...

Ernst Huenges; Thomas Kohl; Olaf Kolditz; Judith Bremer…

2013-12-01T23:59:59.000Z

205

Creation of an Engineered Geothermal System through Hydraulic...  

Office of Environmental Management (EM)

More Documents & Publications Microearthquake Technology for EGS Fracture Characterization Advanced 3D Geophysical Imaging Technologies for Geothermal Resource...

206

Geothermal pump down-hole energy regeneration system  

DOE Patents (OSTI)

Geothermal deep well energy extraction apparatus is provided of the general kind in which solute-bearing hot water is pumped to the earth's surface from a subterranean location by utilizing thermal energy extracted from the hot water for operating a turbine motor for driving an electrical power generator at the earth 3 s surface, the solute bearing water being returned into the earth by a reinjection well. Efficiency of operation of the total system is increased by an arrangement of coaxial conduits for greatly reducing the flow of heat from the rising brine into the rising exhaust of the down-well turbine motor.

Matthews, Hugh B. (Boylston, MA)

1982-01-01T23:59:59.000Z

207

Dynamics of hydrothermal seeps from the Salton Sea geothermal system (California, USA) constrained by temperature monitoring  

E-Print Network (OSTI)

Dynamics of hydrothermal seeps from the Salton Sea geothermal system (California, USA) constrained-, and petroleum-bearing seeps are part of the Salton Sea geothermal system (SSGS) in southern California. Carbon likely reflect a combination of hydrothermal flux variations from the SSGS and the local temporal changes

Svensen, Henrik

208

Ball State University Completes Nation's Largest Ground-Source Geothermal System with Support from Recovery Act  

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

As part of the Obama Administration's all-of-the-above approach to American energy, the Energy Department today congratulated Ball State University for its campus-wide ground-source geothermal system, the nation's largest geothermal heating and cooling system.

209

Geothermal Resources and Technologies  

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

This page provides a brief overview of geothermal energy resources and technologies supplemented by specific information to apply geothermal systems within the Federal sector.

210

Geothermal News  

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

news Office of Energy Efficiency & news Office of Energy Efficiency & Renewable Energy Forrestal Building 1000 Independence Avenue, SW Washington, DC 20585 en Nevada Deploys First U.S. Commercial, Grid-Connected Enhanced Geothermal System http://energy.gov/articles/nevada-deploys-first-us-commercial-grid-connected-enhanced-geothermal-system geothermal-system" class="title-link">Nevada Deploys First U.S. Commercial, Grid-Connected Enhanced Geothermal System

211

Mercury In Soils Of The Long Valley, California, Geothermal System | Open  

Open Energy Info (EERE)

In Soils Of The Long Valley, California, Geothermal System In Soils Of The Long Valley, California, Geothermal System Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Mercury In Soils Of The Long Valley, California, Geothermal System Details Activities (3) Areas (1) Regions (0) Abstract: An evaluation of the Hg distribution in soils of the Long Valley, California, geothermal area, was made. A1-horizon soil samples were collected utilizing a grid system from the resurgent dome area and the Long Valley area. In addition, samples were collected in five traverses across three fault systems and four traverses across east-west-oriented gullies to measure the importance of aspect. Additional samples were collected in an analysis of variance design to evaluate natural variability in soil composition with sampling interval distance. The primary objectives of this

212

Geothermal Systems are a Breath of Fresh Air for Illinois School District |  

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

Geothermal Systems are a Breath of Fresh Air for Illinois School Geothermal Systems are a Breath of Fresh Air for Illinois School District Geothermal Systems are a Breath of Fresh Air for Illinois School District May 24, 2010 - 11:01am Addthis Each classroom has a geothermal unit installed. Although large, the units blend into surroundings and don’t produce excess noise. | Photo Courtesy of Sterling Public Schools Each classroom has a geothermal unit installed. Although large, the units blend into surroundings and don't produce excess noise. | Photo Courtesy of Sterling Public Schools Lindsay Gsell Superintendent Tad Everett had two priorities when deciding on a new system to replace the aging oil-based boiler heating and cooling systems for the seven schools in his district: improving learning environments and saving

213

Geothermal Systems are a Breath of Fresh Air for Illinois School District |  

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

Geothermal Systems are a Breath of Fresh Air for Illinois School Geothermal Systems are a Breath of Fresh Air for Illinois School District Geothermal Systems are a Breath of Fresh Air for Illinois School District May 24, 2010 - 11:01am Addthis Each classroom has a geothermal unit installed. Although large, the units blend into surroundings and don’t produce excess noise. | Photo Courtesy of Sterling Public Schools Each classroom has a geothermal unit installed. Although large, the units blend into surroundings and don't produce excess noise. | Photo Courtesy of Sterling Public Schools Lindsay Gsell Superintendent Tad Everett had two priorities when deciding on a new system to replace the aging oil-based boiler heating and cooling systems for the seven schools in his district: improving learning environments and saving

214

Enhanced Geothermal Systems (EGS) R&D Program  

SciTech Connect

The purpose of this workshop was to develop technical background facts necessary for planning continued research and development of Enhanced Geothermal Systems (EGS). EGS are geothermal reservoirs that require improvement of their permeability or fluid contents in order to achieve economic energy production. The initial focus of this R&D program is devising and testing means to extract additional economic energy from marginal volumes of hydrothermal reservoirs that are already producing commercial energy. By mid-1999, the evolution of the EGS R&D Program, begun in FY 1988 by the U.S. Department of Energy (DOE), reached the stage where considerable expertise had to be brought to bear on what technical goals should be pursued. The main purpose of this Workshop was to do that. The Workshop was sponsored by the Office of Geothermal Technologies of the Department of Energy. Its purpose and timing were endorsed by the EGS National Coordinating Committee, through which the EGS R&D Program receives guidance from members of the U.S. geothermal industry. Section 1.0 of this report documents the EGS R&D Program Review Session. There, managers and researchers described the goals and activities of the program. Recent experience with injection at The Geysers and analysis of downhole conditions at Dixie Valley highlighted this session. Section 2.0 contains a number of technical presentations that were invited or volunteered to illuminate important technical and economic facts and opportunities for research. The emphasis here was on fi.acture creation, detection, and analysis. Section 3.0 documents the initial general discussions of the participants. Important topics that emerged were: Specificity of defined projects, Optimizing cost effectiveness, Main technical areas to work on, Overlaps between EGS and Reservoir Technology R&D areas, Relationship of microseismic events to hydraulic fractures, and Defining criteria for prioritizing research thrusts. Sections 4.0 and 5.0 report the meat of the Workshop. Section 4.0 describes the nomination and clarification of technical thrusts, and Section 5.0 reports the results of prioritizing those thrusts via voting by the participants. Section 6.0 contains two discussions conducted after the work on research thrusts. The topics were ''Simulation'' and ''Stimulation''. A number of technical points that emerged here provide important guidance for both practical field work on EGS systems and for research.

Entingh, Daniel J.

1999-08-18T23:59:59.000Z

215

Marketing the Klamath Falls Geothermal District Heating system  

SciTech Connect

The Klamath Falls Geothermal District Heating system was completed in 1981 and, until 1992, there was no formal marketing plan for the system. This lack of marketing and the system history of poor availability combined to reduce or eliminate interest in connecting on the part of local building owners and it served only the original 14 government buildings connected at start up. The revenue from these buildings, however, did not cover the entire cost of operating the system. As a result, the city was faced with a difficult decision - develop the revenue required to make the system self-supporting or shut it down. As a result, a marketing strategy for the system was developed. A flat rate was developed in which the rate is negotiable, but for most customers approximates 50% of the gas bill. In addition, the flat rate reduced customer retrofit costs because it is not necessary to buy a meter. Finally, the flat rate is a guaranteed value for the first 10 years of the contract. To reduce retrofit costs, the new marketing plan eliminates the requirement for a customer heat exchanger. New customers are now connected directly into the distribution system with district loop water used as the building heating medium. The state operates two programs which have been used in the marketing plan. The first of these is available only to taxable entities and is referred to as the Business Energy Tax Credit (BETC). This program offers business a 35% tax credit on the costs associated with connection to the geothermal district heat system (retrofit, design, permits, etc.). The second state program is the Small Energy Loan Program (SELP). This program will loan the entire cost of the energy project to the customer. The new marketing strategy for the Klamath Falls system has concentrated on offering the customer an attractive and easy to understand rate structure, reduced retrofit cost and complexity for this building along with an attractive package of financing and tax credits. 1 tab.

Rafferty, K. (Geo-Heat Center, Klamath Falls, OR (United States))

1993-08-01T23:59:59.000Z

216

Analysis of Geothermal Reservoir Stimulation Using Geomechanics...  

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

System (EGS) Reservoir; 2010 Geothermal Technology Program Peer Review Report Seismic Fracture Characterization Methods for Enhanced Geothermal Systems; 2010 Geothermal Technology...

217

Thermodynamic analysis of a geothermal district heating system  

Science Journals Connector (OSTI)

Thermoeconomic analysis is considered a useful tool for investigators in engineering and other disciplines due to its methodology based on the quantities exergy, cost, energy and mass. This study deals with an investigation of capital costs and thermodynamic losses for devices in the Balcova Geothermal District Heating Systems (BGDHS). Thermodynamic loss rate-to-capital cost ratios are used for components and the overall system, and a systematic correlation is found between capital cost and exergy loss (total or internal), but not between capital cost and energy loss or external exergy loss. This correlation may imply that devices in successful district heating system are configured so as to achieve an overall optimal design, by balancing the thermodynamic (exergy-based) and economic characteristics of the overall system and their devices. The results provide insights into the relations between thermodynamics and economics and help demonstrate the merits of exergy analysis.

Leyla Ozgener; Arif Hepbasli; Ibrahim Dincer

2005-01-01T23:59:59.000Z

218

A New Gold Pan For The West- Discovering Blind Geothermal Systems With  

Open Energy Info (EERE)

Gold Pan For The West- Discovering Blind Geothermal Systems With Gold Pan For The West- Discovering Blind Geothermal Systems With Shallow Temperature Surveys Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: A New Gold Pan For The West- Discovering Blind Geothermal Systems With Shallow Temperature Surveys Details Activities (6) Areas (4) Regions (0) Abstract: The use of rapidly deployable 2-meter-deep shallow temperature surveys has led to the discovery of at least two blind geothermal systems in Nevada, USA and has helped to define the spatial extent of thermal anomalies at two other locations. At Teels Marsh, two shallow temperature anomalies with a combined strike length of almost 4 km were identified adjacent to a Quaternary fault on the west side of the playa. At Rhodes Marsh, a thermal anomaly at least 5 km long was located adjacent to

219

Geological interpretation of Mount Ciremai geothermal system from remote sensing and magneto-teluric analysis  

E-Print Network (OSTI)

The exploration of geothermal system at Mount Ciremai has been started since the early 1980s and has just been studied carefully since the early 2000s. Previous studies have detected the potential of geothermal system and also the groundwater mechanism feeding the system. This paper will discuss the geothermal exploration based on regional scale surface temperature analysis with Landsat image to have a more detail interpretation of the geological setting and magneto-telluric or MT survey at prospect zones, which identified by the previous method, to have a more exact and in depth local scale structural interpretation. Both methods are directed to pin point appropriate locations for geothermal pilot hole drilling and testing. We used four scenes of Landsat Enhanced Thematic Mapper or ETM+ data to estimate the surface manifestation of a geothermal system. Temporal analysis of Land Surface Temperature or LST was applied and coupled with field temperature measurement at seven locations. By combining the TTM with ...

Sumintadireja, Prihadi; Irawan, Dasapta E; Irawan, Diky; Fadillah, Ahmad

2015-01-01T23:59:59.000Z

220

Electronic Submersible Pump (ESP) Technology and Limitations with Respect to Geothermal Systems (Fact Sheet)  

SciTech Connect

The current state of geothermal technology has limitations that hinder the expansion of utility scale power. One limitation that has been discussed by the current industry is the limitation of Electric Submersible Pump (ESP) technology. With the exception of a few geothermal fields artificial lift technology is dominated by line shaft pump (LSP) technology. LSP's utilize a pump near or below reservoir depth, which is attached to a power shaft that is attached to a motor above ground. The primary difference between an LSP and an ESP is that an ESP motor is attached directly to the pump which eliminates the power shaft. This configuration requires that the motor is submersed in the geothermal resource. ESP technology is widely used in oil production. However, the operating conditions in an oil field vary significantly from a geothermal system. One of the most notable differences when discussing artificial lift is that geothermal systems operate at significantly higher flow rates and with the potential addition of Enhanced Geothermal Systems (EGS) even greater depths. The depths and flow rates associated with geothermal systems require extreme horsepower ratings. Geothermal systems also operate in a variety of conditions including but not limited to; high temperature, high salinity, high concentrations of total dissolved solids (TDS), and non-condensable gases.

Not Available

2014-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "geothermal system cxs" 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

Marketing the Klamath Falls Geothermal District Heating system  

SciTech Connect

The new marketing strategy for the Klamath Falls system has concentrated on offering the customer an attractive and easy to understand rate structure, reduced retrofit cost and complexity for his building along with an attractive package of financing and tax credits. Initial retrofit costs and life-cycle cost analysis have been conducted on 22 buildings to date. For some, the retrofit costs are simply too high for the conversion to make sense at current geothermal rates. For many, however, the prospects are good. At this writing, two new customers are now connected and operating with 5 to 8 more buildings committed to connect this construction season after line extensions are completed. This represents nearly a 60% increase in the number of buildings connected to the system and a 40% increase in system revenue.

Rafferty, K.

1993-06-01T23:59:59.000Z

222

Optimization of hybrid-water/air-cooled condenser in an enhanced turbine geothermal ORC system  

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

DOE Geothermal Program Peer Review 2010 - Presentation. Project objective: To improve the efficiency and output variability of geothermal-based ORC power production systems with minimal water consumption by deploying: 1) a hybrid-water/air cooled condenser with low water consumption and 2) an enhanced turbine with high efficiency.

223

Research Initiative Will Demonstrate Low Temperature Geothermal Electrical Power Generation Systems Using Oilfield Fluids  

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

The U.S. Department of Energy's (DOE) Geothermal Technologies Office (GTO) is announcing a new collaboration with the Office of Fossil Energy (FE) to demonstrate the versatility, reliability, and deployment capabilities of low-temperature geothermal electrical power generation systems using co-produced water from oilfield operations at the Rocky Mountain Oilfield Testing Center (RMOTC) in Wyoming.

224

Helium isotopes in geothermal systems- Iceland, The Geysers, Raft River and  

Open Energy Info (EERE)

Helium isotopes in geothermal systems- Iceland, The Geysers, Raft River and Helium isotopes in geothermal systems- Iceland, The Geysers, Raft River and Steamboat Springs Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Helium isotopes in geothermal systems- Iceland, The Geysers, Raft River and Steamboat Springs Details Activities (3) Areas (3) Regions (0) Abstract: Helium isotope ratios have been measured in geothermal fluids from Iceland, The Geysers, Raft River, Steamboat Springs and Hawaii. These ratios have been interpreted in terms of the processes which supply He in distinct isotopic ratios (i.e. magmatic He, ~10 Ra; atmospheric He, R,sub>a; and crustal He, ~0.1 Ra) and in terms of the processes which can alter the isotopic ratio (hydrologic mixing, U-Th series alpha production and weathering release of crustal He, magma aging and

225

Seismic Fracture Characterization Methods for Enhanced Geothermal...  

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

Seismic Fracture Characterization Methods for Enhanced Geothermal Systems Seismic Fracture Characterization Methods for Enhanced Geothermal Systems Project objective: Make Seismic...

226

Warren Estates-Manzanita Estates Reno, Nevada residential geothermal district heating system  

SciTech Connect

Warren Estates-Manzanita Estates is the largest privately-owned and operated residential geothermal district heating system in the State of Nevada. The system has operated for ten years and presently services 95 homes. Geothermal energy is used to heat homes, domestic water, spas, swimming pools, and greenhouses. Four homes have installed driveway deicing systems using geothermal energy. This paper briefly describes the geothermal resource, wells, system engineering, operation, applications, and economics. The accompanying posters illustrate the geothermal area, system design, and various applications. The resource is part of the Moana geothermal field, located in southwest Reno. Excluding the Warren-Manzanita Estates, the well-known Moana field supports nearly 300 geothermal wells that supply fluids to individual residences, several motels, a garden nursery, a few churches, and a municipal swimming pool. The Warren-Manzanita Estates is ideally suited for residential district space heating because the resource is shallow, moderate-temperature, and chemically benign. The primary reservoir rock is the Kate Peak andesite, a Tertiary volcanic lahar that has excellent permeability within the narrow fault zones that bisect the property. The Kate Peak formation is overlain by impermeable Tertiary lake sediments and alluvium. Two production wells, each about 240 m deep, are completed near the center of the residential development at the intersection of two fault zones. Geothermal fluids are pumped at a rate of 15 to 25 l/s (260-400 gpm) from one of two wells at a temperature of 95{degrees}C (202{degrees}F) to two flat-plate heat exchangers. The heat exchangers transfer energy from the geothermal fluids to a second fluid, much like a binary geothermal power plant.

McKay, F.; McKay, G.; McKay, S.; Flynn, T. [McKay Pump and Drilling, Reno, NV (United States)

1995-12-31T23:59:59.000Z

227

The Geothermal System Near Paisley Oregon: A Tectonomagmatic Framework for Understanding the Geothermal Resource Potential of Southeastern Oregon.  

E-Print Network (OSTI)

??The tectonic and magmatic framework of southeast Oregon provides the conditions necessary for the existence of geothermal energy resources. However, few detailed studies of geothermal… (more)

Makovsky, Kyle Aaron

2013-01-01T23:59:59.000Z

228

Geothermal: Sponsored by OSTI -- Downhole heat exchanger system...  

Office of Scientific and Technical Information (OSTI)

Museum, Brannon Cottage, and the Community Center, Calistoga, CA. Feasibility study Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log On Home...

229

A Demonstration System for Capturing Geothermal Energy from Mine...  

Open Energy Info (EERE)

MT Project Type Topic 1 Recovery Act - Geothermal Technologies Program: Ground Source Heat Pumps Project Type Topic 2 Topic Area 1: Technology Demonstration Projects Project...

230

Large Scale Geothermal Exchange System for Residential, Office...  

Open Energy Info (EERE)

Project Type Topic 1 Recovery Act - Geothermal Technologies Program: Ground Source Heat Pumps Project Type Topic 2 Topic Area 1: Technology Demonstration Projects Project...

231

Enhancing geothermal heat pump systems with parametric performance analyses.  

E-Print Network (OSTI)

??Parametric performance analyses and comparison of a basic geothermal heat pump, a heat pump cycle with motor cooling/refrigerant preheating, and a heat pump cycle utilizing… (more)

Self, Stuart

2010-01-01T23:59:59.000Z

232

How an Enhanced Geothermal System Works Animation - Text Version...  

Office of Environmental Management (EM)

well is drilled into hot basement rock that has limited permeability and fluid content. This type of geothermal resource is sometimes referred to as "hot, dry rock" and...

233

Metal Organic Heat Carriers for Enhanced Geothermal Systems  

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

DOE Geothermal Program Peer Review 2010 - Presentation. This project addresses Energy Conversion Barrier N -Inability to lower the temperature conditions under which EGS power generation is commercially viable.

234

Colorado Firm Develops Innovative Materials for Geothermal Systems...  

Energy Savers (EERE)

EERE, Composite Technology Development, Inc. advanced several technologies related to geothermal energy extraction. The company developed materials designed to create and...

235

Conduction-Dominated Geothermal Systems | Open Energy Information  

Open Energy Info (EERE)

Making. In: Proceedings. Thirty-Ninth Workshop on Geothermal Reservoir Engineering; 20140224; Stanford, California. Stanford, California: Stanford University; p. 8 Inga...

236

State Geothermal Resource Assessment and Data Collection Efforts  

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

HawaiiNational Geothermal Data System Aids in Discovering Hawaii's Geothermal Resource (November 20, 2012)

237

International Partnership for Geothermal Technology - 2012 Peer...  

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

River Geothermal Drilling Project Canada The Snake River Geothermal Drilling Project GermanyEU Toward the Understanding of Induced Seismicity in Enhanced Geothermal Systems...

238

SUBSIDENCE DUE TO GEOTHERMAL FLUID WITHDRAWAL  

E-Print Network (OSTI)

faults and wells, Cerro Prieto geothermal field, Mexico (faults and wells, Cerro Prieto geothermal field, Mexico (geothermal system in Mexico and the Pleasant Bayou exploratory geopressured well

Narasimhan, T.N.

2013-01-01T23:59:59.000Z

239

Life-cycle analysis results of geothermal systems in comparison to other power systems.  

SciTech Connect

A life-cycle energy and greenhouse gas emissions analysis has been conducted with Argonne National Laboratory's expanded Greenhouse Gases, Regulated Emissions, and Energy Use in Transportation (GREET) model for geothermal power-generating technologies, including enhanced geothermal, hydrothermal flash, and hydrothermal binary technologies. As a basis of comparison, a similar analysis has been conducted for other power-generating systems, including coal, natural gas combined cycle, nuclear, hydroelectric, wind, photovoltaic, and biomass by expanding the GREET model to include power plant construction for these latter systems with literature data. In this way, the GREET model has been expanded to include plant construction, as well as the usual fuel production and consumption stages of power plant life cycles. For the plant construction phase, on a per-megawatt (MW) output basis, conventional power plants in general are found to require less steel and concrete than renewable power systems. With the exception of the concrete requirements for gravity dam hydroelectric, enhanced geothermal and hydrothermal binary used more of these materials per MW than other renewable power-generation systems. Energy and greenhouse gas (GHG) ratios for the infrastructure and other life-cycle stages have also been developed in this study per kilowatt-hour (kWh) of electricity output by taking into account both plant capacity and plant lifetime. Generally, energy burdens per energy output associated with plant infrastructure are higher for renewable systems than conventional ones. GHG emissions per kWh of electricity output for plant construction follow a similar trend. Although some of the renewable systems have GHG emissions during plant operation, they are much smaller than those emitted by fossil fuel thermoelectric systems. Binary geothermal systems have virtually insignificant GHG emissions compared to fossil systems. Taking into account plant construction and operation, the GREET model shows that fossil thermal plants have fossil energy use and GHG emissions per kWh of electricity output about one order of magnitude higher than renewable power systems, including geothermal power.

Sullivan, J. L.; Clark, C. E.; Han, J.; Wang, M.; Energy Systems

2010-10-11T23:59:59.000Z

240

DOE Funds 21 Research, Development and Demonstration Projects for up to $78 Million to Promote Enhanced Geothermal Systems  

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

Today at the National Geothermal Conference in Reno, Nev., Deputy Assistant Secretary for Renewable Energy Steve Chalk announced the U.S. Department of Energy's (DOE) awards under a Funding Opportunity Announcement (FOA) for research, development and demonstration of Enhanced Geothermal Systems (EGS) for next-generation geothermal energy technologies.

Note: This page contains sample records for the topic "geothermal system cxs" 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

GRR/Section 7-HI-a - Geothermal and Cable System Development Permit | Open  

Open Energy Info (EERE)

GRR/Section 7-HI-a - Geothermal and Cable System Development Permit GRR/Section 7-HI-a - Geothermal and Cable System Development Permit < GRR Jump to: navigation, search GRR-logo.png GEOTHERMAL REGULATORY ROADMAP Roadmap Home Roadmap Help List of Sections Section 7-HI-a - Geothermal and Cable System Development Permit 07HIAGeothermalAndCableSystemDevelopmentPermitting.pdf Click to View Fullscreen Contact Agencies Hawaii Department of Land and Natural Resources Engineering Division Regulations & Policies Hawaii Revised Statute 196D Hawaii Administrative Rules 13-185 Hawaii Revised Statute 205-3.1 Revised Statute 205-5. Triggers None specified Click "Edit With Form" above to add content 07HIAGeothermalAndCableSystemDevelopmentPermitting.pdf 07HIAGeothermalAndCableSystemDevelopmentPermitting.pdf Error creating thumbnail: Page number not in range.

242

Sales and Use Tax Exemption for Solar and Geothermal Systems | Department  

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

Solar and Geothermal Systems Solar and Geothermal Systems Sales and Use Tax Exemption for Solar and Geothermal Systems < Back Eligibility Commercial General Public/Consumer Installer/Contractor Residential Savings Category Energy Sources Buying & Making Electricity Solar Heating & Cooling Commercial Heating & Cooling Heating Water Heating Program Info Start Date 7/1/2007 State Connecticut Program Type Sales Tax Incentive Rebate Amount 100% exemption Provider Connecticut Department of Revenue Services Connecticut enacted legislation in June 2007 (H.B. 7432) that established a sales and use tax exemption for solar energy equipment and geothermal resource systems. H.B. 7432 added passive and active solar water-heating systems, passive and active solar space-heating systems, and solar-electric

243

A problem posed by vapour-dominated geothermal systems  

Science Journals Connector (OSTI)

... in wells drilled to different depths, as shown in Fig. 1 for the Kamojang geothermal field in Indonesia. The water table lies 100-150 m below ground surface. From ... . Pressure profiles similar to that in Fig. 1 have been published for the Lardarello geothermal field1.

Gerald Schubert; Joe M. Straus; Malcolm A. Grant

1980-10-02T23:59:59.000Z

244

2011 Napa Hedberg Research Conference report on enhanced geothermal systems  

Science Journals Connector (OSTI)

...Many other new developments in geophysics...optimize injection strategies to minimize seismicity...flow rate. The development of a geothermal...from the oil and gas industry, but...supercritical turbines for geothermal...dwarfing the oil and gas resource. Once...continued technology development, large-scale...

Dag Nummedal; Gary Isaksen; Peter Malin

245

Performance investigation of two geothermal district heating systems for building applications: Energy analysis  

Science Journals Connector (OSTI)

The energetic performance of Balcova geothermal district heating system (BGDHS) and Salihli geothermal district heating system (SGDHS) installed in Turkey is investigated for building applications in this study. The essential components (e.g., pumps, heat exchangers) of these geothermal district heating systems are also included in the modeling. The present model is employed for system analysis and energetic performance evaluation of the geothermal district heating systems. Energy flow diagrams are drawn to exhibit the input and output energies and losses to the surroundings by using the 2003 and 2004 heating season actual data. In addition, energy efficiencies are studied for comparison purposes, and are found to be 39.36% for BGDHS and 59.31% for SGDHS, respectively.

Leyla Ozgener; Arif Hepbasli; Ibrahim Dincer

2006-01-01T23:59:59.000Z

246

Geothermal: Sponsored by OSTI -- Sustaining the National Geothermal...  

Office of Scientific and Technical Information (OSTI)

Sustaining the National Geothermal Data System: Considerations for a System Wide Approach and Node Maintenance, Geothermal Resources Council 37th Annual Meeting, Las Vegas, Nevada,...

247

Geochemistry of the Wendel-Amedee Geothermal System-California | Open  

Open Energy Info (EERE)

Geochemistry of the Wendel-Amedee Geothermal System-California Geochemistry of the Wendel-Amedee Geothermal System-California Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Geochemistry of the Wendel-Amedee Geothermal System-California Abstract The fluid chemistry of the geothermal system that feed Amedee and Wendel Hot Springs in eastern California is complex. Two thermal fluids have been identified based on the concentrations of the conservative elements C1 and B, fluid enthalpies, and the application of chemical geothermometers. One is characterized by temperatures above 120°C and a TDS content of 1300 ppm, and will be used by GeoProducts Corporation to produce electricity. The second did lower in temperature, 75°C, and has a TDS content of 650 ppm. This fluid may be used fore direct heat application at the Susanville

248

Detection and Characterization of Natural and Induced Fractures for the Development of Enhanced Geothermal Systems  

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

Project objectives: Combine geophysical methods for reservoir and fracture characterization with rock physics measurements made under in-situ conditions (up to 350?C) for development of geothermal systems.

249

Hydrothermal spallation drilling and advanced energy conversion technologies for Engineered Geothermal Systems  

E-Print Network (OSTI)

The purpose of this research was to study the various factors affecting the economic and technical feasibility of Engineered Geothermal Systems, with a special emphasis on advanced drilling technologies. The first part of ...

Augustine, Chad R

2009-01-01T23:59:59.000Z

250

Method for inhibiting silica precipitation and scaling in geothermal flow systems  

DOE Patents (OSTI)

A method for inhibiting silica scaling and precipitation in geothermal flow systems by on-line injection of low concentrations of cationic nitrogen-containing compounds, particularly polymeric imines, polymeric amines, and quaternary ammonium compounds is described.

Harrar, J.E.; Lorensen, L.E.; Locke, F.E.

1980-06-13T23:59:59.000Z

251

An advanced geothermal drilling system: Component options and limitations  

SciTech Connect

The historical developments of drilling technology for geothermal resources have followed traditional incremental trends. The local expertise and rigs were adapted from existing drill rigs used for mining, civil, and water well projects. In areas with hydrocarbon resources, petroleum drilling hardware has been adapted; and in other countries, these units were imported as depth requirements increased and more robust derricks and downhole tools were needed. This ad hoc approach has provided adequate exploration and production wells. In contrast to the incremental improvements in petroleum rotary drilling system components this paper reviews a new, purpose-developed system that would solve the known major problems by design. Performance goals of 4 km (12,000 ft.) depth, 400 C, (750 F) and penetration rates greater than 8 m/h (25 ft/h) were selected. This advanced system was reviewed extensively and estimates of perhaps 30 to 60% cost savings were projected, depending on the assumed effectiveness and performance improvements provided. This paper continues the design and feasibility study and presents some of the component and sub-system details developed thus far.

Rowley, J. [Pajarito Enterprises, Los Alamos, NM (United States); Saito, Seiji [JMC Geothermal Division, Tokyo (Japan); Long, R.C. [Department of Energy, Las Vegas, NV (United States). Yucca Mountain Site Characterization Project

1995-12-31T23:59:59.000Z

252

Exergoeconomic optimization of integrated geothermal system in Simav, Kutahya  

Science Journals Connector (OSTI)

The aim of this study is to investigate the integrated use of the geothermal resources in the Kutahya–Simav region, Turkey. Although geothermal energy has been in use for years in the others countries, the integrated use of the geothermal fluid is new in Turkey. The high temperature level of the geothermal fluid in the Simav field makes it possible to utilize it for electricity generation, space heating and balneology. In this regard, a multiple complex has been proposed there in order to use the energy of the geothermal fluid more efficiently. Therefore, the possibility of electricity generation by a binary cycle has been preliminarily researched. After the electricity generation process, the waste geothermal fluid has been conducted to residences and greenhouses later for heating purpose in the field. In this regard, twenty one different models have been formed and analyzed using exergy and LCC methods. As a conclusion, the pre-feasibility study indicates that utilization of this geothermal capacity for multiple uses would be an attractive investment for Simav region.

Oguz Arslan; Ramazan Kose

2010-01-01T23:59:59.000Z

253

The Future of Geothermal Energy  

E-Print Network (OSTI)

The Future of Geothermal Energy Impact of Enhanced Geothermal Systems (EGS) on the United States in the 21st Century #12;The Future of Geothermal Energy Impact of Enhanced Geothermal Systems (EGS and Renewable Energy, Office of Geothermal Technologies, Under DOE Idaho Operations Office Contract DE-AC07-05ID

Laughlin, Robert B.

254

Air-Cooled Condensers in Next-Generation Conversion Systems Geothermal Lab  

Open Energy Info (EERE)

Air-Cooled Condensers in Next-Generation Conversion Systems Geothermal Lab Air-Cooled Condensers in Next-Generation Conversion Systems Geothermal Lab Call Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Air-Cooled Condensers in Next-Generation Conversion Systems Project Type / Topic 1 Laboratory Call for Submission of Applications for Research, Development and Analysis of Geothermal Technologies Project Type / Topic 2 Air-Cooling Project Description As the geothermal industry moves to use geothermal resources that are more expensive to develop, there will be increased incentive to use more efficient power plants. Because of increasing demand on finite supplies of water, this next generation of more efficient plants will likely need to reject heat sensibly to the ambient (air-cooling). This will be especially true in western states having higher grade Enhanced Geothermal Systems (EGS) resources, as well as most hydrothermal resources. If one had a choice, an evaporative heat rejection system would be selected because it would provide both cost and performance advantages. The evaporative system, however, consumes a significant amount of water during heat rejection that would require makeup. Though they use no water, air-cooling systems have higher capital costs, reduced power output (heat is rejected at a higher temperature), lower power sales due to higher parasitics (fan power), and greater variability in power output (because of large variation in the dry-bulb temperature).

255

Overview of Geothermal Energy Development  

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

Geothermal Energy Geothermal Energy Development Kermit Witherbee Geothermal Geologist/Analyst DOE Office of Indian Energy Webcast: Overview of Geothermal Energy Development Tuesday, January 10, 2012 Geothermal Geology and Resources Environmental Impacts Geothermal Technology - Energy Conversion Geothermal Leasing and Development 2 PRESENTATION OUTLINE GEOTHERMAL GEOLOGY AND RESOURCES 3 Geology - Plate Tectonics 4 Plate Tectonic Processes Schematic Cross-Section "Extensional" Systems- "Rifting" Basin and Range Rio Grand Rift Imperial Valley East Africa Rift Valley "Magmatic" Systems Cascade Range 6 Geothermal Resources(USGS Fact Sheet 2008-3062) 7 State Systems

256

Seismic Fracture Characterization Methods for Enhanced Geothermal...  

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

Seismic Fracture Characterization Methods for Enhanced Geothermal Systems; 2010 Geothermal Technology Program Peer Review Report Seismic Fracture Characterization Methods for...

257

TRACING FLUID SOURCES IN THE COSO GEOTHERMAL SYSTEM USING FLUID-INCLUSION  

Open Energy Info (EERE)

TRACING FLUID SOURCES IN THE COSO GEOTHERMAL SYSTEM USING FLUID-INCLUSION TRACING FLUID SOURCES IN THE COSO GEOTHERMAL SYSTEM USING FLUID-INCLUSION GAS CHEMISTRY Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: TRACING FLUID SOURCES IN THE COSO GEOTHERMAL SYSTEM USING FLUID-INCLUSION GAS CHEMISTRY Details Activities (1) Areas (1) Regions (0) Abstract: Vein and alteration assemblages from eight Coso wells have been collected and their fluid-inclusion gases analyzed by quadrupole mass spectrometry. Four major types of alteration were sampled: 1) young calcite-hematite-pyrite veins; 2) wairakite or epidote veins and alteration that are spatially associated with deep reservoirs in the main field and eastern wells; 3) older sericite and pyrite wallrock alteration; and 4) stilbite-calcite veins that are common in cooler or marginal portions of

258

Enhanced Geothermal Systems (EGS) R&D Program: Monitoring EGS-Related Research  

SciTech Connect

This report reviews technologies that could be applicable to Enhanced Geothermal Systems development. EGS covers the spectrum of geothermal resources from hydrothermal to hot dry rock. We monitored recent and ongoing research, as reported in the technical literature, that would be useful in expanding current and future geothermal fields. The literature review was supplemented by input obtained through contacts with researchers throughout the United States. Technologies are emerging that have exceptional promise for finding fractures in nonhomogeneous rock, especially during and after episodes of stimulation to enhance natural permeability.

McLarty, Lynn; Entingh, Daniel; Carwile, Clifton

2000-09-29T23:59:59.000Z

259

National Geothermal Data System Deployed to Serve Industry |...  

Office of Environmental Management (EM)

information from all 50 states and enough raw data to pinpoint elusive sweet spots of geothermal energy deep in the earth. This best-in-class data collection and usability...

260

Google.org Invests $10 Million in Enhanced Geothermal Systems...  

Energy Savers (EERE)

of hot water or steam where none existed before or to extend and enhance an existing geothermal reservoir. Google.org will invest 4 million in Potter Drilling, Inc., which is...

Note: This page contains sample records for the topic "geothermal system cxs" 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.


261

Geothermal Direct Use | Open Energy Information  

Open Energy Info (EERE)

Direct Use Direct Use Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF [edit] Geothermal Direct Use 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 Direct Use Links Related documents and websites EERE's Direct Use Report National Institute of Building Science's Whole Building Design Guide Policy Makers' Guidebook for Geothermal Heating and Cooling Dictionary.png Geothermal Direct Use: Low- to moderate-temperature water from geothermal reservoirs can be used to provide heat directly to buildings, or other applications that require

262

Rock-Water Interactions In Hot Dry Rock Geothermal Systems- Field  

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 » Rock-Water Interactions In Hot Dry Rock Geothermal Systems- Field Investigations Of In Situ Geochemical Behavior Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Rock-Water Interactions In Hot Dry Rock Geothermal Systems- Field Investigations Of In Situ Geochemical Behavior Details Activities (5) Areas (2) Regions (0) Abstract: Two hot dry rock (HDR) geothermal energy reservoirs have been created by hydraulic fracturing of Precambrian granitic rock between two wells on the west flank of the Valles Caldera in the Jemez Mountains of northern New Mexico. Heat is extracted by injecting water into one well,

263

Dixie Valley Engineered Geothermal System Exploration Methodology Project, Baseline Conceptual Model Report  

SciTech Connect

The Engineered Geothermal System (EGS) Exploration Methodology Project is developing an exploration approach for EGS through the integration of geoscientific data. The Project chose the Dixie Valley Geothermal System in Nevada as a field laboratory site for methodlogy calibration purposes because, in the public domain, it is a highly characterized geothermal systems in the Basin and Range with a considerable amount of geoscience and most importantly, well data. This Baseline Conceptual Model report summarizes the results of the first three project tasks (1) collect and assess the existing public domain geoscience data, (2) design and populate a GIS database, and (3) develop a baseline (existing data) geothermal conceptual model, evaluate geostatistical relationships, and generate baseline, coupled EGS favorability/trust maps from +1km above sea level (asl) to -4km asl for the Calibration Area (Dixie Valley Geothermal Wellfield) to identify EGS drilling targets at a scale of 5km x 5km. It presents (1) an assessment of the readily available public domain data and some proprietary data provided by Terra-Gen Power, LLC, (2) a re-interpretation of these data as required, (3) an exploratory geostatistical data analysis, (4) the baseline geothermal conceptual model, and (5) the EGS favorability/trust mapping. The conceptual model presented applies to both the hydrothermal system and EGS in the Dixie Valley region.

Iovenitti, Joe

2013-05-15T23:59:59.000Z

264

Dixie Valley Engineered Geothermal System Exploration Methodology Project, Baseline Conceptual Model Report  

DOE Data Explorer (OSTI)

The Engineered Geothermal System (EGS) Exploration Methodology Project is developing an exploration approach for EGS through the integration of geoscientific data. The Project chose the Dixie Valley Geothermal System in Nevada as a field laboratory site for methodlogy calibration purposes because, in the public domain, it is a highly characterized geothermal systems in the Basin and Range with a considerable amount of geoscience and most importantly, well data. This Baseline Conceptual Model report summarizes the results of the first three project tasks (1) collect and assess the existing public domain geoscience data, (2) design and populate a GIS database, and (3) develop a baseline (existing data) geothermal conceptual model, evaluate geostatistical relationships, and generate baseline, coupled EGS favorability/trust maps from +1km above sea level (asl) to -4km asl for the Calibration Area (Dixie Valley Geothermal Wellfield) to identify EGS drilling targets at a scale of 5km x 5km. It presents (1) an assessment of the readily available public domain data and some proprietary data provided by Terra-Gen Power, LLC, (2) a re-interpretation of these data as required, (3) an exploratory geostatistical data analysis, (4) the baseline geothermal conceptual model, and (5) the EGS favorability/trust mapping. The conceptual model presented applies to both the hydrothermal system and EGS in the Dixie Valley region.

Joe Iovenitti

265

Value analysis of advanced heat rejection systems for geothermal power plants  

SciTech Connect

A computer model is developed to evaluate the performance of the binary geothermal power plants (Organic Rankine Cycles) with various heat rejection systems and their impact on the levelized cost of electricity. The computer model developed in this work is capable of simulating the operation of a geothermal power plant which consists mainly of an Organic Rankine Cycle (binary plants) with different types of working fluids such as pure hydrocarbons and some binary mixtures of the most promising combinations of hydrocarbons.

Bliem, C. [CJB Consulting, Longmont, CO (United States); Zangrando, F.; Hassani, V. [National Renewable Energy Lab., Golden, CO (United States)

1996-04-10T23:59:59.000Z

266

Geothermal: Sponsored by OSTI -- Creation of an Enhanced Geothermal...  

Office of Scientific and Technical Information (OSTI)

Creation of an Enhanced Geothermal System through Hydraulic and Thermal Stimulation Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log On Home...

267

AltaRock Energy Announces Successful Multiple-Zone Stimulation of Well at the Newberry Enhanced Geothermal Systems Demonstration  

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

AltaRock Energy today announced that it has created multiple stimulated zones from a single wellbore at the Newberry Enhanced Geothermal System (EGS) Demonstration site.

268

Recovery Act: Geothermal Data Aggregation: Submission of Information into the National Geothermal Data System, Final Report DOE Project DE-EE0002852 June 24, 2014  

SciTech Connect

The National Geothermal Data System (NGDS) is a Department of Energy funded effort to create a single cataloged source for a variety of geothermal information through a distributed network of databases made available via web services. The NGDS will help identify regions suitable for potential development and further scientific data collection and analysis of geothermal resources as a source for clean, renewable energy. A key NGDS repository or ‘node’ is located at Southern Methodist University developed by a consortium made up of: • SMU Geothermal Laboratory • Siemens Corporate Technology, a division of Siemens Corporation • Bureau of Economic Geology at the University of Texas at Austin • Cornell Energy Institute, Cornell University • Geothermal Resources Council • MLKay Technologies • Texas Tech University • University of North Dakota. The focus of resources and research encompass the United States with particular emphasis on the Gulf Coast (on and off shore), the Great Plains, and the Eastern U.S. The data collection includes the thermal, geological and geophysical characteristics of these area resources. Types of data include, but are not limited to, temperature, heat flow, thermal conductivity, radiogenic heat production, porosity, permeability, geological structure, core geophysical logs, well tests, estimated reservoir volume, in situ stress, oil and gas well fluid chemistry, oil and gas well information, and conventional and enhanced geothermal system related resources. Libraries of publications and reports are combined into a unified, accessible, catalog with links for downloading non-copyrighted items. Field notes, individual temperature logs, site maps and related resources are included to increase data collection knowledge. Additional research based on legacy data to improve quality increases our understanding of the local and regional geology and geothermal characteristics. The software to enable the integration, analysis, and dissemination of this team’s NGDS contributions was developed by Siemens Corporate Technology. The SMU Node interactive application is accessible at http://geothermal.smu.edu. Additionally, files may be downloaded from either http://geothermal.smu.edu:9000/geoserver/web/ or through http://geothermal.smu.edu/static/DownloadFilesButtonPage.htm. The Geothermal Resources Council Library is available at https://www.geothermal-library.org/.

Blackwell, David D. [SMU Geothermal Laboratory; Chickering Pace, Cathy [SMU Geothermal Laboratory] (ORCID:0000000228898620); Richards, Maria C. [SMU Geothermal Laboratory

2014-06-24T23:59:59.000Z

269

Geothermal FAQs | Department of Energy  

Office of Environmental Management (EM)

Back to Top 5. What is the visual impact of geothermal technologies? Answer: District heating systems and geothermal heat pumps are easily integrated into communities with almost...

270

Geothermal Development and the Use of Categorical Exclusions Under the National Environmental Policy Act of 1969 (Presentation)  

SciTech Connect

The federal environmental review process under the National Environmental Policy Act of 1969 (NEPA) can be complex and time consuming. Currently, a geothermal developer may have to complete the NEPA process multiple times during the development of a geothermal project. One mechanism to reduce the timeframe of the federal environmental review process for activities that do not have a significant environmental impact is the use of Categorical Exclusions (CXs), which can exempt projects from having to complete an Environmental Assessment or Environmental Impact Statement. This study focuses primarily on the CX process and its applicability to geothermal exploration. In this paper, we: Provide generalized background information on CXs, including previous NEPA reports addressing CXs, the process for developing CXs, and the role of extraordinary circumstances; Examine the history of the Bureau of Land Management's (BLM) geothermal CXs; Compare current CXs for oil, gas, and geothermal energy; Describe bills proposing new statutory CXs; Examine the possibility of standardizing geothermal CXs across federal agencies; and Present analysis from the Geothermal NEPA Database and other sources on the potential for new geothermal exploration CXs. As part of this study, we reviewed Environmental Assessments (EAs) conducted in response to 20 geothermal exploration drilling permit applications (Geothermal Drilling Permits or Notices of Intents) since the year 2001, the majority of which are from the last 5 years. All 20 EAs reviewed for this study resulted in a Finding of No Significant Impact (FONSI). While many of these FONS's involved proponent proposed or federal agency required mitigation, this still suggests it may be appropriate to create or expand an exploration drilling CX for geothermal, which would have a significant impact on reducing geothermal exploration timelines and up-front costs. Ultimately, federal agencies tasked with permitting and completing environmental reviews for geothermal exploration drilling activities and/or legislative representatives are the responsible parties to discuss the merits and implementation of new or revised CXs for geothermal development.

Levine, A.; Young, K. R.

2014-09-01T23:59:59.000Z

271

Exergy analysis of two geothermal district heating systems for building applications  

Science Journals Connector (OSTI)

This study evaluates the exergetic performance of two local Turkish geothermal district heating systems through exergy analysis. The exergy destructions in these geothermal district heating systems are quantified and illustrated using exergy flow diagrams for a reference temperature of 1 °C using the 2003 and 2004 actual seasonal heating data. The results indicate that the exergy destructions in these systems particularly occur due to losses in pump, heat exchangers, pipelines, and the reinjection of thermal water. Exergy efficiencies of the two systems are investigated for the system performance analysis and improvement and are determined to be 42.89% and 59.58%, respectively.

Leyla Ozgener; Arif Hepbasli; Ibrahim Dincer

2007-01-01T23:59:59.000Z

272

Geothermal: Sponsored by OSTI -- DEVELOPING THE NATIONAL GEOTHERMAL...  

Office of Scientific and Technical Information (OSTI)

DEVELOPING THE NATIONAL GEOTHERMAL DATA SYSTEM ADOPTION OF CKAN FOR DOMESTIC & INTERNATIONAL DATA DEPLOYMENT...

273

Assessment of the Geothermal System Near Stanley, Idaho  

SciTech Connect

The City of Stanley, Idaho (population 63) is situated in the Salmon River valley of the central Idaho highlands. Due to its location and elevation (6270 feet amsl) it is one of the coldest locales in the continental U.S., on average experiencing frost 290 days of the year as well as 60 days of below zero (oF) temperatures. Because of high snowfall (76 inches on average) and the fact that it is at the terminus of its rural grid, the city also frequently endures extended power outages during the winter. To evaluate its options for reducing heating costs and possible local power generation, the city obtained a rural development grant from the USDA and commissioned a feasibility study through author Roy Mink to determine whether a comprehensive site characterization and/or test drilling program was warranted. Geoscience students and faculty at Idaho State University (ISU), together with scientists from the Idaho Geological Survey (IGS) and Idaho National Laboratory (INL) conducted three field data collection campaigns between June, 2011 and November, 2012 with the assistance of author Beckwith who arranged for food, lodging and local property access throughout the field campaigns. Some of the information collected by ISU and the IGS were compiled by author Mink and Boise State University in a series of progress reports (Makovsky et al., 2011a, b, c, d). This communication summarizes all of the data collected by ISU including data that were compiled as part of the IGS’s effort for the National Geothermal Data System’s (NGDS) data compilation project funded by the Department of Energy and coordinated by the Arizona Geological Survey.

Trent Armstrong; John Welhan; Mike McCurry

2012-06-01T23:59:59.000Z

274

Geothermal Blog | Department of Energy  

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

Blog Blog Geothermal Blog RSS October 23, 2013 This diagram shows how electricity is produced using enhanced geothermal systems. | Energy Department Geothermal Energy: A Glance Back and a Leap Forward This year marks the centennial of the first commercial electricity production from geothermal resources. As geothermal technologies advance, the Energy Department is working to improve, and lower the cost of, enhanced geothermal systems. April 12, 2013 Learn the basics of enhanced geothermal systems technology. I Infographic by Sarah Gerrity. Enhanced Geothermal in Nevada: Extracting Heat From the Earth to Generate Sustainable Power Innovative clean energy project is up and running in Nevada.

275

Experiment-based modeling of geochemical interactions in CO2-based geothermal systems  

E-Print Network (OSTI)

2000), “A hot dry rock geothermal energy concept utilizingsequestration with geothermal energy capture in naturallyreservoirs) for geothermal energy recovery. The major

Jung, Y.

2014-01-01T23:59:59.000Z

276

Enhanced Geothermal Systems (EGS) comparing water with CO2 as heat transmission fluids  

E-Print Network (OSTI)

D.W. A Hot Dry Rock Geothermal Energy Concept Utilizingcombine recovery of geothermal energy with simultaneous1. Introduction Geothermal energy extraction is currently

Pruess, Karsten

2007-01-01T23:59:59.000Z

277

Use of Tracers to Characterize Fractures in Engineered Geothermal Systems  

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

Project Objectives: Measure interwell fracture surface area and fracture spacing using sorbing tracers; measure fracture surface areas adjacent to a single geothermal well using tracers and injection/backflow techniques; design, fabricate and test a downhole instrument for measuring fracture flow following a hydraulic stimulation experiment.

278

Sonoma State Hospital, Eldridge, California, geothermal-heating system: conceptual design and economic feasibility report  

SciTech Connect

The Sonoma State Mental Hospital, located in Eldridge, California, is presently equipped with a central gas-fired steam system that meets the space heating, domestic hot water, and other heating needs of the hospital. This system is a major consumer of natural gas - estimated at 259,994,000 cubic feet per year under average conditions. At the 1981 unit gas rate of $0.4608 per therm, an average of $1,258,000 per year is required to operate the steam heating system. The hospital is located in an area with considerable geothermal resources as evidenced by a number of nearby hot springs resorts. A private developer is currently investigating the feasibility of utilizing geothermally heated steam to generate electricity for sale to the Pacific Gas and Electric Company. The developer has proposed to sell the byproduct condensed steam to the hospital, which would use the heat energy remaining in the condensate for its own heating needs and thereby reduce the fossil fuel energy demand of the existing steam heating system. The geothermal heating system developed is capable of displacing an estimated 70 percent of the existing natural gas consumption of the steam heating system. Construction of the geothermal fluid distribution and collection system and the retrofits required within the buildings are estimated to cost $1,777,000. Annual expenses (operation and maintenance, insurance, and geothermal fluid purchase) have been estimated to be $40,380 per year in 1981 dollars. The proposed geothermal heating system could then be completely paid for in 32 months by the savings in natural gas purchases that would result.

Not Available

1982-02-01T23:59:59.000Z

279

Coefficient of performance (COP) analysis of geothermal district heating systems (GDHSs): Salihli GDHS case study  

Science Journals Connector (OSTI)

The purpose of this survey is about to analyze the heating coefficient of performance (COP) of geothermal district heating systems. Actual system data are taken from the Salihli GDHS, Turkey. The collected data are quantified and illustrated in tables, particularly for a reference temperature for comparison purposes. In this study, firstly energy and COP analysis of the \\{GDHSs\\} is introduced and then Salihli GDHS coefficient of performance results is given as a case study. Moreover, this paper offers an interesting empirical study of certain geothermal systems.

Leyla Ozgener

2012-01-01T23:59:59.000Z

280

Direct utilization of geothermal heat in cascade application to aquaculture and greenhouse systems at Navarro College. Annual report, January 1984-September 1984  

SciTech Connect

Progress is reported on a project to use the 130/sup 0/F geothermal resource in central Texas. The system for cascading geothermal energy through aquaculture and greenhouse systems was completed and the first shrimp harvest was held. (MHR)

Smith, K.

1984-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "geothermal system cxs" 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

[Geothermal system temperature-depth database and model for data analysis]. 5. quarterly technical progress report  

SciTech Connect

During this first quarter of the second year of the contract activity has involved several different tasks. The author has continued to work on three tasks most intensively during this quarter: the task of implementing the data base for geothermal system temperature-depth, the maintenance of the WWW site with the heat flow and gradient data base, and finally the development of a modeling capability for analysis of the geothermal system exploration data. The author has completed the task of developing a data base template for geothermal system temperature-depth data that can be used in conjunction with the regional data base that he had already developed and is now implementing it. Progress is described.

Blackwell, D.D.

1998-04-25T23:59:59.000Z

282

Modern Geothermal Features | Open Energy Information  

Open Energy Info (EERE)

Modern Geothermal Features Modern Geothermal Features Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Modern Geothermal Features Dictionary.png Modern Geothermal Features: Active geothermal manifestations such as hot springs, fumaroles, steaming ground, mud pots, mud pools, mud volcanoes, or geysers. Other definitions:Wikipedia Reegle When geothermal systems have conduits available to the surface, they cause surface manifestations (or geothermal features). These features may vary between steam seeps (fumaroles) or pure fluid manifestations (geysers and hot springs) causing spectacular mineral formations (e.g. sinter terraces, tufa mounds). These types of manifestations are clear indications of an underlying geothermal system. Geothermal systems with no modern surface

283

STANFORD GEOTHERMAL QUARTERLY REPORT  

E-Print Network (OSTI)

1 STANFORD GEOTHERMAL PROGRAM QUARTERLY REPORT JANUARY 1 - MARCH 31, 1997 #12;2 1 AN EXPERIMENTAL in geothermal systems as well as in many other applications such as porous heat pipes, drying and nuclear waste

Stanford University

284

Applications of Geothermal Energy  

Science Journals Connector (OSTI)

The distinction between near surface and deep geothermal systems follows from the different depth levels of the geothermal reservoirs and different techniques of utilization (Fig ... smooth. Distinguishing the tw...

Ingrid Stober; Kurt Bucher

2013-01-01T23:59:59.000Z

285

Life-cycle analysis results for geothermal systems in comparison to other power systems: Part II.  

SciTech Connect

A study has been conducted on the material demand and life-cycle energy and emissions performance of power-generating technologies in addition to those reported in Part I of this series. The additional technologies included concentrated solar power, integrated gasification combined cycle, and a fossil/renewable (termed hybrid) geothermal technology, more specifically, co-produced gas and electric power plants from geo-pressured gas and electric (GPGE) sites. For the latter, two cases were considered: gas and electricity export and electricity-only export. Also modeled were cement, steel and diesel fuel requirements for drilling geothermal wells as a function of well depth. The impact of the construction activities in the building of plants was also estimated. The results of this study are consistent with previously reported trends found in Part I of this series. Among all the technologies considered, fossil combustion-based power plants have the lowest material demand for their construction and composition. On the other hand, conventional fossil-based power technologies have the highest greenhouse gas (GHG) emissions, followed by the hybrid and then two of the renewable power systems, namely hydrothermal flash power and biomass-based combustion power. GHG emissions from U.S. geothermal flash plants were also discussed, estimates provided, and data needs identified. Of the GPGE scenarios modeled, the all-electric scenario had the highest GHG emissions. Similar trends were found for other combustion emissions.

Sullivan, J.L.; Clark, C.E.; Yuan, L.; Han, J.; Wang, M. (Energy Systems)

2012-02-08T23:59:59.000Z

286

Wine Valley Inn: A mineral water spa in Calistoga, California. Geothermal-energy-system conceptual design and economic feasibility  

SciTech Connect

The purpose of this study is to determine the engineering and economic feasibility for utilizing geothermal energy for air conditioning and service water heating at the Wine Valley Inn, a mineral water spa in Calistoga, California. The study evaluates heating, ventilating, air conditioning and water heating systems suitable for direct heat geothermal application. Due to the excellent geothermal temperatures available at this site, the mechanics and economics of a geothermally powered chilled water cooling system are evaluated. The Wine Valley Inn has the resource potential to have one of the few totally geothermal powered air conditioning and water heating systems in the world. This total concept is completely developed. A water plan was prepared to determine the quantity of water required for fresh water well development based on the special requirements of the project. An economic evaluation of the system is included to justify the added capital investment needed to build the geothermally powered mineral spa. Energy payback calculations are presented. A thermal cascade system is proposed to direct the geothermal water through the energy system to first power the chiller, then the space heating system, domestic hot water, the two spas and finally to heat the swimming pool. The Energy Management strategy required to automatically control this cascade process using industrial quality micro-processor equipment is described. Energy Management controls are selected to keep equipment sizing at a minimum, pump only the amount of geothermal water needed and be self balancing.

Not Available

1981-10-26T23:59:59.000Z

287

A History Of Hot Dry Rock Geothermal Energy Systems | Open Energy  

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 History Of Hot Dry Rock Geothermal Energy Systems Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A History Of Hot Dry Rock Geothermal Energy Systems Details Activities (1) Areas (1) Regions (0) Abstract: This is a short history, so far as it can now be assembled, of early speculations and observations concerning the existence and origin of natural heat in the earth's crust; of some of the many methods proposed to extract and use it; and of recent investigations designed to develop and demonstrate such methods. It is probably only the preface to a much longer

288

Seismic methods for resource exploration in enhanced geothermal systems  

SciTech Connect

A finite-difference modeling study of seismic wave propagation was conducted to determine how to best investigate subsurface faults and fracture zones in geothermal areas. The numerical model was created based on results from a previous seismic reflection experiment. A suite of fault models was investigated including blind faults and faults with surface expressions. The seismic data suggest that blind faults can be detected by a sudden attenuation of seismic wave amplitudes, as long the fault is located below the receiver array. Additionally, a conversion from P- to S-waves indicates the reflection and refraction of the P-waves while propagating across the fault. The drop in amplitudes and the excitation of S-waves can be used to estimate the location of the fault at depth. The accuracy of the numerical modeling depends on the availability of a priori in situ information (velocity and density) from borehole experiments in the geothermal area.

Gritto, Roland; Majer, Ernest L.

2002-06-12T23:59:59.000Z

289

NATIONAL GEOTHERMAL DATA SYSTEM: AN EXEMPLAR OF OPEN ACCESS TO DATA  

SciTech Connect

The formal launch of National Geothermal Data System (NGDS – www.geothermaldata.org) in 2014 will provide open access to technical geothermal-relevant data from all of the Department of Energy- sponsored geothermal development and research projects and geologic data from all 50 states. By making data easily discoverable and accessible this system will open new exploration opportunities and shorten project development. The prototype data system currently includes multiple data nodes, and nationwide data online and available to the public, indexed through a single catalog under construction at http://search.geothermaldata.org. Data from state geological surveys and partners includes more than 5 million records online, including 1.48 million well headers (oil and gas, water, geothermal), 732,000 well logs, and 314,000 borehole temperatures and is growing rapidly. There are over 250 Web services and another 138 WMS (Web Map Services) registered in the system as of August, 2013. Additional data record is being added by companion projects run by Boise State University, Southern Methodist University, and the USGS. The National Renewable Energy Laboratory is managing the Geothermal Data Repository, an NGDS node that will be a clearinghouse for data from hundreds of DOE-funded geothermal projects. NGDS is built on the US Geoscience Information Network (USGIN) data integration framework, which is a joint undertaking of the USGS and the Association of American State Geologists (AASG). NGDS is fully compliant with the White House Executive Order of May 2013, requiring all federal agencies to make their data holdings publicly accessible online in open source, interoperable formats with common core and extensible metadata. The National Geothermal Data System is being designed, built, deployed, and populated primarily with grants from the US Department of Energy, Geothermal Technologies Office. To keep this operational system sustainable after the original implementation will require four core elements: continued serving of data and applications by providers; maintenance of system operations; a governance structure; and an effective business model. Each of these presents a number of challenges currently under consideration.

Blackman, Harold [Arizona Geological Survey; Blackman, Harold M. [Arizona Geological Survey; Blackman, Harold M. [Arizona Geological Survey; Blackman, Harold [Boise State University; Blackman, Harold [United States Department of Energy; Blackman, Harold

2013-10-01T23:59:59.000Z

290

GEOTHERM Data Set  

DOE Data Explorer (OSTI)

GEOTHERM is a comprehensive system of public databases and software used to store, locate, and evaluate information on the geology, geochemistry, and hydrology of geothermal systems. Three main databases address the general characteristics of geothermal wells and fields, and the chemical properties of geothermal fluids; the last database is currently the most active. System tasks are divided into four areas: (1) data acquisition and entry, involving data entry via word processors and magnetic tape; (2) quality assurance, including the criteria and standards handbook and front-end data-screening programs; (3) operation, involving database backups and information extraction; and (4) user assistance, preparation of such items as application programs, and a quarterly newsletter. The principal task of GEOTHERM is to provide information and research support for the conduct of national geothermal-resource assessments. The principal users of GEOTHERM are those involved with the Geothermal Research Program of the U.S. Geological Survey.

DeAngelo, Jacob

291

Selected data for low-temperature (less than 90{sup 0}C) geothermal systems in the United States: reference data for US Geological Survey Circular 892  

SciTech Connect

Supporting data are presented for the 1982 low-temperature geothermal resource assessment of the United States. Data are presented for 2072 geothermal sites which are representative of 1168 low-temperature geothermal systems identified in 26 States. The low-temperature geothermal systems consist of 978 isolated hydrothermal-convection systems, 148 delineated-area hydrothermal-convection systems, and 42 delineated-area conduction-dominated systems. The basic data and estimates of reservoir conditions are presented for each geothermal system, and energy estimates are given for the accessible resource base, resource, and beneficial heat for each isolated system.

Reed, M.J.; Mariner, R.H.; Brook, C.A.; Sorey, M.L.

1983-12-15T23:59:59.000Z

292

Geothermal Technologies Office 2012 Peer Review Report | Department...  

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

Report 2010 Geothermal Technology Program Peer Review Report Tracer Methods for Characterizing Fracture Creation in Enhanced Geothermal Systems; 2010 Geothermal Technology Program...

293

OpenEI:Old Geothermal Gateway | Open Energy Information  

Open Energy Info (EERE)

Gateway Gateway Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Geothermalpower.jpg GeoInfo.png Geothermal Information Geothermal Energy Overview Types of Geothermal Resources Energy Conversion Technologies Cooling Technologies Exploration Techniques Reference Materials GeoModels.png Geothermal Models & Tools GETEM SAM Geothermal Prospector Exploration Cost and Time Metric Georesource.png Resource Assessments USGS Maps (2008) Geothermal Resource Potential Map Geothermal Areas Geothermal Regions Installed.png Installed & Planned Capacity Geothermal Generation Installed Capacity Planned Capacity Geofinancing.png Geothermal Financing Developers' Financing Handbook RE Project Finance CREST HOMER REFTI GeoR&D.png Geothermal RD&D Enhanced Geothermal Systems

294

Fluid Imaging of Enhanced Geothermal Systems through Joint 3D Geophysical  

Open Energy Info (EERE)

Imaging of Enhanced Geothermal Systems through Joint 3D Geophysical Imaging of Enhanced Geothermal Systems through Joint 3D Geophysical Inverse Modeling Geothermal Lab Call Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Fluid Imaging of Enhanced Geothermal Systems through Joint 3D Geophysical Inverse Modeling Project Type / Topic 1 Laboratory Call for Submission of Applications for Research, Development and Analysis of Geothermal Technologies Project Type / Topic 2 Fluid Imaging Project Description EGS has been defined as enhanced reservoirs that have been created to extract economical amounts of heat from low permeability and/or porosity geothermal resources. Critical to the success of EGS is the successful manipulation of fluids in the subsurface to enhance permeability. Knowledge in the change in volume and location of fluids in the rocks and fractures (both natural and induced) will be needed to manage injection strategies such as the number and location of step out wells, in-fill wells and the ratio of injection to production wells. The key difficulty in manipulating fluids has been our inability to reliably predict their locations, movements and concentrations. We believe combining data from MEQ and electrical surveys has the potential to overcome these problems and can meet many of the above needs, economically. Induced seismicity is currently viewed as one of the essential methods for inferring the success of creating fracture permeability and fluid paths during large scale EGS injections. Fluids are obviously playing a critical role in inducing the seismicity, however, other effects such as thermal, geochemical and stress redistribution, etc. may also play a role.

295

Life-Cycle Analysis Results of Geothermal Systems in Comparison to Other Power Systems  

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

A life-cycle energy and greenhouse gas emissions analysis has been conducted with Argonne National Laboratory's GREET model for geothermal power-generating technologies, including enhanced geothermal, hydrothermal flash, and hydrothermal binary technologies.

296

Stanford Geothermal Workshop - Geothermal Technologies Office...  

Energy Savers (EERE)

- Geothermal Technologies Office Stanford Geothermal Workshop - Geothermal Technologies Office Presentation by Geothermal Technologies Director Doug Hollett at the Stanford...

297

Energy Department Announces $10 Million to Speed Enhanced Geothermal Systems into the Market  

Office of Energy Efficiency and Renewable Energy (EERE)

In support President Obama’s all-of-the-above energy strategy, the Energy Department today announced $10 million to improve subsurface characterization for enhanced geothermal systems (EGS) by developing state-of-the-art methods that quantify critical underground reservoir properties as they change over time.

298

Demonstration of a Variable Phase Turbine Power System for Low Temperature Geothermal Resources  

SciTech Connect

A variable phase turbine assembly will be designed and manufactured having a turbine, operable with transcritical, two-phase or vapor flow, and a generator – on the same shaft supported by process lubricated bearings. The assembly will be hermetically sealed and the generator cooled by the refrigerant. A compact plate-fin heat exchanger or tube and shell heat exchanger will be used to transfer heat from the geothermal fluid to the refrigerant. The demonstration turbine will be operated separately with two-phase flow and with vapor flow to demonstrate performance and applicability to the entire range of low temperature geothermal resources. The vapor leaving the turbine is condensed in a plate-fin refrigerant condenser. The heat exchanger, variable phase turbine assembly and condenser are all mounted on single skids to enable factory assembly and checkout and minimize installation costs. The system will be demonstrated using low temperature (237F) well flow from an existing large geothermal field. The net power generated, 1 megawatt, will be fed into the existing power system at the demonstration site. The system will demonstrate reliable generation of inexpensive power from low temperature resources. The system will be designed for mass manufacturing and factory assembly and should cost less than $1,200/kWe installed, when manufactured in large quantities. The estimated cost of power for 300F resources is predicted to be less than 5 cents/kWh. This should enable a substantial increase in power generated from low temperature geothermal resources.

Hays, Lance G

2014-07-07T23:59:59.000Z

299

Using estimated risk to develop stimulation strategies for Enhanced Geothermal Systems John Douglas* and Hideo Aochi  

E-Print Network (OSTI)

-defined acceptable risk thresholds the injection is: increased (if the risk is below the amber level), decreased (if could lead to both acceptable levels of risk and increased permeability. hal-00921141,version1-19Dec20131 Using estimated risk to develop stimulation strategies for Enhanced Geothermal Systems John

Paris-Sud XI, Université de

300

Geothermal fluxes of alkalinity in the Narayani river system of central Nepal  

E-Print Network (OSTI)

Geothermal fluxes of alkalinity in the Narayani river system of central Nepal Matthew J. Evans hot springs flow within the steeply incised gorges of the central Nepal Himalayan front. The spring of central Nepal, Geochem. Geophys. Geosyst., 5, Q08011, doi:10.1029/2004GC000719. G 3 G 3Geochemistry

Derry, Louis A.

Note: This page contains sample records for the topic "geothermal system cxs" 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

A Case Study of Wide Diameter Casing for Geothermal Systems  

SciTech Connect

Three wells have been drilled in the central resistivity area of a geothermal field in the Taupo Volcanic Zone, New Zealand. Using a well bore simulator, WELL SIM V3.0, reservoir conditions and well characteristics are evaluated to determine the increase in output by increasing production casing diameters from either 8-5/8 inches OD or 9-5/8 inches OD to 13-3/8 inches OD. Increases in well drilling costs are determined to provide a commentary on the economics. While open hole size is effectively doubled, well costs increase by 10% and, in this study, output increases by an average of 18%.

King, T.R.; Freeston, D.H.; Winmill, R.L.

1995-01-01T23:59:59.000Z

302

Design and optimization of a downhole coaxial heat exchanger for an enhanced geothermal system (EGS)  

Science Journals Connector (OSTI)

The present study considers the design, performance analysis and optimization of a downhole coaxial heat exchanger for an enhanced geothermal system (EGS). The optimum mass flow rate of the geothermal fluid for minimum pumping power and maximum extracted heat energy was determined. In addition, the coaxial pipes of the downhole heat exchanger were sized based on the optimum geothermal mass flow rate and steady-state operation. Transient effect or time-dependent cooling of the Earth underground, and the optimum amount and size of perforations at the inner pipe entrance region to regulate the flow of the geothermal fluid were disregarded to simplify the analysis. The paper consists of an analytical and numerical thermodynamic optimization of a downhole coaxial heat exchanger used to extract the maximum possible energy from the Earth's deep underground (2 km and deeper below the surface) for direct usage, and subject to a nearly linear increase in geothermal gradient with depth. The thermodynamic optimization process and entropy generation minimization (EGM) analysis were performed to minimize heat transfer and fluid friction irreversibilities. An optimum diameter ratio of the coaxial pipes for minimum pressure drop in both limits of the fully turbulent and laminar fully-developed flow regime was determined and observed to be nearly the same irrespective of the flow regime. Furthermore, an optimum geothermal mass flow rate and an optimum geometry of the downhole coaxial heat exchanger were determined for maximum net power output. Conducting an energetic and exergetic analysis to evaluate the performance of binary power cycle, higher Earth's temperature gradient and lower geofluid rejection temperatures were observed to yield maximum first- and second-law efficiencies.

P.J. Yekoladio; T. Bello-Ochende; J.P. Meyer

2013-01-01T23:59:59.000Z

303

STATUS OF GEOTHERMAL RESERVOIR ENGINEERING MANAGEMENT PROGRAM ("GREMP") -DECEMBER, 1979  

E-Print Network (OSTI)

ment methods for geothermal well system param- eters,on calcite-fouled geothermal wells (Michaels, 1979). An

Howard, J. H.

2012-01-01T23:59:59.000Z

304

Barriers and enablers to geothermal district heating system development in the United States  

Science Journals Connector (OSTI)

According to the US Energy Information Administration, space and hot water heating represented about 20% of total US energy demand in 2006. Given that most of this demand is met by burning natural gas, propane, and fuel oil, an enormous opportunity exists for directly utilizing indigenous geothermal energy as a cleaner, nearly emissions-free renewable alternative. Although the US is rich in geothermal energy resources, they have been frequently undervalued in America's portfolio of options as a means of offsetting fossil fuel emissions while providing a local, reliable energy source for communities. Currently, there are only 21 operating GDHS in the US with a capacity of about 100 MW thermal. Interviews with current US district heating operators were used to collect data on and analyze the development of these systems. This article presents the current structure of the US regulatory and market environment for GDHS along with a comparative study of district heating in Iceland where geothermal energy is extensively utilized. It goes on to review the barriers and enablers to utilizing geothermal district heating systems (GDHS) in the US for space and hot water heating and provides policy recommendations on how to advance this energy sector in the US.

Hildigunnur H. Thorsteinsson; Jefferson W. Tester

2010-01-01T23:59:59.000Z

305

Quantitative analysis of existing conditions and production strategies for the Baca geothermal system, New Mexico  

SciTech Connect

The Baca geothermal reservoir and adjacent aquifers in the Jemez Mountains of New Mexico comprise an integrated hydrogeologic system. Analysis of the geothermal reservoir either under natural conditions or subject to proposed development should account for the mass (water) and energy (heat) balances of adjacent aquifers as well as the reservoir itself. A three-dimensional model based on finite difference approximation is applied to this integrated system. The model simulates heat transport associated with the flow of steam and water through an equivalent porous medium. The Baca geothermal reservoir is dominated by flow in fractures and distinct strata, but at the scale of application the equivalent porous media concept is appropriate. The geothermal reservoir and adjacent aquifers are simulated under both natural conditions and proposed production strategies. Simulation of natural conditions compares favorably with observed pressure, temperature, and thermal discharge data. The history matching simulations show that the results used for comparison are most sensitive to vertical permeability and the area of an assumed high-permeability zone connecting the reservoir to a deep hydrothermal source. Simulations using proposed production strategies and optimistic estimates of certain hydrologic parameters and reservoir extent indicate that a 50-MW power plant could be maintained for a period greater than 30 years. This production, however, will result in significant decreases in the total water discharge to the Jemez River.

Faust, C.R.; Mercer, J.W.; Thomas, S.D.; Balleau, W.A.

1984-05-01T23:59:59.000Z

306

Energy and exergy analysis of geothermal district heating systems: an application  

Science Journals Connector (OSTI)

In this study we present an energy and exergy assessment and modeling of geothermal district heating systems for their system analysis, performance evaluation and optimization. A comprehensive case study is conducted in Balcova geothermal district heating system (BGDHS) in Izmir, Turkey and actual thermal data are collected and employed for analysis. Using actual system data, an assessment of the district heating system performance, energy and exergy efficiencies, and exergy destructions in the system is conducted in this regard. The exergy destructions in the overall BGDHS are quantified and illustrated using exergy flow diagram. Furthermore, both energy and exergy flow diagrams are exhibited for comparison purposes. It is observed through analysis that the exergy destructions in the system particularly take place as the exergy of the fluid lost in the pumps, the heat exchanger losses, the exergy of the thermal water (geothermal fluid) reinjected and the natural direct discharge (hot water distribution losses) of the system, accounting for 1.64%, 8.57%, 14.84% and 28.96%, respectively, of the total exergy input to the BGDHS. For system performance analysis and improvement, both energy and exergy efficiencies of the overall BGDHS are investigated and are determined to be 41.9% and 46%, respectively.

Leyla Ozgener; Arif Hepbasli; Ibrahim Dincer

2005-01-01T23:59:59.000Z

307

Geothermal Literature Review At Medicine Lake Geothermal Area (1984) | Open  

Open Energy Info (EERE)

Geothermal Area (1984) Geothermal Area (1984) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Medicine Lake Geothermal Area (1984) Exploration Activity Details Location Medicine Lake Geothermal Area Exploration Technique Geothermal Literature Review Activity Date 1984 Usefulness not indicated DOE-funding Unknown Notes The melt zones of volcanic clusters was analyzed with recent geological and geophysical data for five magma-hydrothermal systems were studied for the purpose of developing estimates for the depth, volume and location of magma beneath each area. References Goldstein, N. E.; Flexser, S. (1 December 1984) Melt zones beneath five volcanic complexes in California: an assessment of shallow magma occurrences

308

Geothermal Literature Review At Salton Trough Geothermal Area (1984) | Open  

Open Energy Info (EERE)

Trough Geothermal Area (1984) Trough Geothermal Area (1984) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Salton Trough Geothermal Area (1984) Exploration Activity Details Location Salton Trough Geothermal Area Exploration Technique Geothermal Literature Review Activity Date 1984 Usefulness not indicated DOE-funding Unknown Notes The melt zones of volcanic clusters was analyzed with recent geological and geophysical data for five magma-hydrothermal systems were studied for the purpose of developing estimates for the depth, volume and location of magma beneath each area. References Goldstein, N. E.; Flexser, S. (1 December 1984) Melt zones beneath five volcanic complexes in California: an assessment of shallow magma occurrences

309

Iceland Geothermal Conference 2013 - Geothermal Policies and...  

Energy Savers (EERE)

Iceland Geothermal Conference 2013 - Geothermal Policies and Impacts in the U.S. Iceland Geothermal Conference 2013 - Geothermal Policies and Impacts in the U.S. Iceland Geothermal...

310

Fracture Characterization in Enhanced Geothermal Systems by Wellbore and Reservoir Analysis  

SciTech Connect

This report highlights the work that was done to characterize fractured geothermal reservoirs using production data. That includes methods that were developed to infer characteristic functions from production data and models that were designed to optimize reinjection scheduling into geothermal reservoirs, based on these characteristic functions. The characterization method provides a robust way of interpreting tracer and flow rate data from fractured reservoirs. The flow-rate data are used to infer the interwell connectivity, which describes how injected fluids are divided between producers in the reservoir. The tracer data are used to find the tracer kernel for each injector-producer connection. The tracer kernel describes the volume and dispersive properties of the interwell flow path. A combination of parametric and nonparametric regression methods were developed to estimate the tracer kernels for situations where data is collected at variable flow-rate or variable injected concentration conditions. The characteristic functions can be used to calibrate thermal transport models, which can in turn be used to predict the productivity of geothermal systems. This predictive model can be used to optimize injection scheduling in a geothermal reservoir, as is illustrated in this report.

Roland N. Horne, Kewen Li, Mohammed Alaskar, Morgan Ames, Carla Co, Egill Juliusson, Lilja Magnusdottir

2012-06-30T23:59:59.000Z

311

Development of an Enhanced Two-Phase Production System at the Geysers Geothermal Field  

SciTech Connect

A method was developed to enhance geothermal steam production from two-phase wells at THE Geysers Geothermal Field. The beneficial result was increased geothermal production that was easily and economically delivered to the power plant.

Steven Enedy

2001-12-14T23:59:59.000Z

312

Modeling of thermodynamic and chemical changes in low-temperature geothermal systems  

SciTech Connect

A method was developed to incorporate the transport of several chemical components into a model of the transport of fluid mass and heat within a geothermal system. It was demonstrated that the use of coupled hydrological, thermal and chemical data allows for the determination of field porosities, amounts and regions of cool recharge into the system as well as field permeabilities and the hot reservoir volume. With the additional information a reliable prediction of the long-term cooling rate can be made.

Spencer, A.L.

1986-12-01T23:59:59.000Z

313

Performance investigation of the Afyon geothermal district heating system for building applications: Exergy analysis  

Science Journals Connector (OSTI)

This paper deals with an energy and exergy evaluation and modeling of geothermal district heating systems for their system analysis, performance evaluation and optimization. As a comprehensive case study, the Afyon geothermal district heating system (AFJET) in Afyon, Turkey is considered and actual thermal data are collected and employed for analysis. Using actual system data, an evaluation of the district heating system performance, energy and exergy efficiencies, and exergy destructions in the system are conducted in this regard. This study is also conducted to show how energy and exergy efficiencies of the \\{GDHSs\\} will change with the reference temperature and how exergy losses will affect by the temperature difference between the geothermal resource and the supply temperature of the district heating distribution network. In addition, the negative effects of discharge waters of the AFJET are presented. The energy and exergy efficiencies of the entire AFJET are found to be 37.59% and 47.54%, respectively. The results are expected to be helpful to researchers and engineers in the area.

Ali Keçeba?; Muhammet Kayfeci; Engin Gedik

2011-01-01T23:59:59.000Z

314

Novel use of 4D Monitoring Techniques to Improve Reservoir Longevity and Productivity in Enhanced Geothermal Systems  

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

Novel use of 4D Monitoring Techniques to Improve Reservoir Longevity and Productivity in Enhanced Geothermal Systems presentation at the April 2013 peer review meeting held in Denver, Colorado.

315

The Viability of Sustainable, Self-Propping Shear Zones in Ehanced Geothermal Systems: Measurement of Reaction Rates at Elevated Temperatures  

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

The Viability of Sustainable, Self-Propping Shear Zones in Ehanced Geothermal Systems: Measurement of Reaction Rates at Elevated Temperatures presentation at the April 2013 peer review meeting held in Denver, Colorado.

316

Joint inversion of electrical and seismic data for Fracture char. and Imaging of Fluid Flow in Geothermal Systems  

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

Joint inversion of electrical and seismic data for Fracture char. and Imaging of Fluid Flow in Geothermal Systems presentation at the April 2013 peer review meeting held in Denver, Colorado.

317

Heat exchanger optimization for geothermal district heating systems: A fuel saving approach  

Science Journals Connector (OSTI)

One of the most commonly used heating devices in geothermal systems is the heat exchanger. The output conditions of heat exchangers are based on several parameters. The heat transfer area is one of the most important parameters for heat exchangers in terms of economics. Although there are a lot of methods to optimize heat exchangers, the method described here is a fairly easy approach. In this paper, a counter flow heat exchanger of geothermal district heating system is considered and optimum design values, which provide maximum annual net profit, for the considered heating system are found according to fuel savings. Performance of the heat exchanger is also calculated. In the analysis, since some values are affected by local conditions, Turkey's conditions are considered.

Ahmet Dagdas

2007-01-01T23:59:59.000Z

318

BSU GHP District Heating and Cooling System (PHASE I) Geothermal Project |  

Open Energy Info (EERE)

BSU GHP District Heating and Cooling System (PHASE I) Geothermal Project BSU GHP District Heating and Cooling System (PHASE I) Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title BSU GHP District Heating and Cooling System (PHASE I) Project Type / Topic 1 Recovery Act - Geothermal Technologies Program: Ground Source Heat Pumps Project Type / Topic 2 Topic Area 1: Technology Demonstration Projects Project Description The Project will result in the construction of the largest ground source geothermal-based closed loop GHP heating and cooling system in America. Phase I of the Project began with the design, competitive bidding, and contract award for the drilling and "looping" of 1,800 boreholes in sports fields and parking lots on the north side of campus. The components of the entire Project include: (1) 4,100 four hundred feet deep boreholes spread over about 25 acres of sport fields and parking lots (Phase I will involve 1,800 boreholes spread over about 8 acres); (2) Each Phase will require a district energy station (about 9,000 sq. feet) that will each contain (A) two 2,500 ton heat pump chillers (which can produce 150 degree (F) water for heating purposes and 42 degree (F) water for cooling purposes); and (B) a variety of water pumps, electrical and other control systems; (3) a closed loop piping system that continuously circulates about 20,000 gallons of water (no anti-freeze) per minute through the boreholes, energy stations, a (two pipe) hot water loop and a (two pipe) chilled water loop (no water is drawn from the aquifer at any point in the operation); and (4) hot/chilled water-to-air heat exchangers in each of the buildings.

319

Artificial neural network modeling of geothermal district heating system thought exergy analysis  

Science Journals Connector (OSTI)

This paper deals with an artificial neural network (ANN) modeling to predict the exergy efficiency of geothermal district heating system under a broad range of operating conditions. As a case study, the Afyonkarahisar geothermal district heating system (AGDHS) in Turkey is considered. The average daily actual thermal data acquired from the AGDHS in the 2009–2010 heating season are collected and employed for exergy analysis. An ANN modeling is developed based on backpropagation learning algorithm for predicting the exergy efficiency of the system according to parameters of the system, namely the ambient temperature, flow rate and well head temperature. Then, the recorded and calculated data conducted in the AGDHS at different dates are used for training the network. The results showed that the network yields a maximum correlation coefficient with minimum coefficient of variance and root mean square values. The results confirmed that the ANN modeling can be applied successfully and can provide high accuracy and reliability for predicting the exergy performance of geothermal district heating systems.

Ali Keçeba?; ?smail Yabanova; Mehmet Yumurtac?

2012-01-01T23:59:59.000Z

320

Exergoeconomic analysis of the Gonen geothermal district heating system for buildings  

Science Journals Connector (OSTI)

This paper presents an application of an exergoeconomic model, through exergy and cost accounting analyses, to the Gonen geothermal district heating system (GDHS) in Balikesir, Turkey for the entire system and its components. This exergoeconomic model is used to reveal the cost formation process and the productive interaction between components. The exergy destructions in the overall Gonen GDHS are quantified and illustrated for a reference temperature of 4 °C. The results indicate that the exergy destructions in the system occur primarily as a result of losses in the cooled geothermal water injected back into the reservoir, pumps, heat exchangers, and pipelines. Total exergy destruction and reinjection exergy of the cooled geothermal water result in 1010 kW (accounting for 32.49%), 320.3 kW (accounting for 10%) of the total exergy input to the Gonen GDHS, respectively. Both energy and exergy efficiencies of the overall Gonen GDHS are also investigated to analyze the system performance, as these efficiencies are determined to be 42% and 50%, respectively. It is found that an increase of the load condition leads to a decrease in the overall thermal costs, which will result in more cost-effective energy systems for buildings.

Z. Oktay; I. Dincer

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "geothermal system cxs" 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

ANNOTATED RESEARCH BIBLIOGRAPHY FOR GEOTHERMAL RESERVOIR ENGINEERING  

E-Print Network (OSTI)

Modeling f o r Geothermal Reservoirs and Power- plants. I'Fumaroles Hunt, 1970 Geothermal power James, 1978 FusionGood a lated perfo : Geothermal Power Systems Compared. 'I

Sudo!, G.A

2012-01-01T23:59:59.000Z

322

Geothermal: Sponsored by OSTI -- Fracture Characterization in...  

Office of Scientific and Technical Information (OSTI)

Fracture Characterization in Enhanced Geothermal Systems by Wellbore and Reservoir Analysis Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log...

323

Geothermal: Sponsored by OSTI -- Electronic Submersible Pump...  

Office of Scientific and Technical Information (OSTI)

Electronic Submersible Pump (ESP) Technology and Limitations with Respect to Geothermal Systems (Fact Sheet) Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact...

324

Systems study of drilling for installation of geothermal heat pumps  

SciTech Connect

Geothermal, or ground-source, heat pumps (GHP) are much more efficient than air-source units such as conventional air conditioners. A major obstacle to their use is the relatively high initial cost of installing the heat-exchange loops into the ground. In an effort to identify drivers which influence installation cost, a number of site visits were made during 1996 to assess the state-of-the-art in drilling for GHP loop installation. As an aid to quantifying the effect of various drilling-process improvements, we constructed a spread-sheet based on estimated time and material costs for all the activities required in a typical loop-field installation. By substituting different (improved) values into specific activity costs, the effect on total project costs can be easily seen. This report contains brief descriptions of the site visits, key points learned during the visits, copies of the spread-sheet, recommendations for further work, and sample results from sensitivity analysis using the spread-sheet.

Finger, J.T.; Sullivan, W.N.; Jacobson, R.D.; Pierce, K.G.

1997-09-01T23:59:59.000Z

325

Thermal monitoring and optimization of geothermal district heating systems using artificial neural network: A case study  

Science Journals Connector (OSTI)

This paper deals with determine the energy and exergy efficiencies and exergy destructions for thermal optimization of a geothermal district heating system by using artificial neural network (ANN) technique. As a comprehensive case study, the Afyonkarahisar geothermal district heating system (AGDHS) in Afyonkarahisar/Turkey is considered and its actual thermal data as of average weekly data are collected in heating seasons during the period 2006–2010 for ANN based monitoring and thermal optimization. The measured data and calculated values are used at the design of Levenberg-Marquardt (LM) based multi-layer perceptron (MLP) in Matlab program. The results of the study are described graphically. The results show that the developed model is found to quickly predict the thermal performance and exergy destructions of the AGDHS with good accuracy. In addition, two main factors play important roles in the thermal optimization: (i) ambient temperature and (ii) flow rates in energy distribution cycle of the AGDHS. Various cases are investigated to determine how to change the energy and exergy efficiencies of the AGDHS for the temperature and flow rate. Finally, a monitoring and performance evaluation of a geothermal district heating system and its components by ANN will reduce the losses and human involvement and make the system more effective and efficient.

Ali Keçeba?; ?smail Yabanova

2012-01-01T23:59:59.000Z

326

Underground Mine Water Heating and Cooling Using Geothermal Heat Pump Systems  

SciTech Connect

In many regions of the world, flooded mines are a potentially cost-effective option for heating and cooling using geothermal heat pump systems. For example, a single coal seam in Pennsylvania, West Virginia, and Ohio contains 5.1 x 1012 L of water. The growing volume of water discharging from this one coal seam totals 380,000 L/min, which could theoretically heat and cool 20,000 homes. Using the water stored in the mines would conservatively extend this option to an order of magnitude more sites. Based on current energy prices, geothermal heat pump systems using mine water could reduce annual costs for heating by 67% and cooling by 50% over conventional methods (natural gas or heating oil and standard air conditioning).

Watzlaf, G.R.; Ackman, T.E.

2006-03-01T23:59:59.000Z

327

Experience with the EM-60 electromagnetic system for geothermal exploration in Nevada  

SciTech Connect

Lawrence Berkeley Laboratory (LBL) conducted controlled-source electromagnetic (EM) surveys at three geothermal prospects in northern Nevada. Over 40 soundings were made in Panther Canyon (Grass Valley), near Winnemucca; Soda Lakes, near Fallon; and McCoy, west of Austin, to test and demonstrate the applicability of LBL's EM-60 system to geothermal exploration. The EM-60 is a frequency-domain system using three-component magnetic detection. Typically, +-65 A is applied to an 100-m-diameter four-turn horizontal loop, generating a dipole moment >10/sup 6/ MKS over the frequency range 10/sup -3/ to 10/sup -3/ Hz. With such a source loop, soundings were made, at transmitter-receiver separations of up to 4 km, providing a maximum depth of penetration of 4 km.

Wilt, M.; Goldstein, N.E.; Stark, M.; Haught, J.R.; Morrison, H.F.

1981-09-01T23:59:59.000Z

328

Creation of an Engineered Geothermal System through Hydraulic and Thermal Stimulation  

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

Project objectives: To create an Enhanced Geothermal System on the margin of the Cosofield through the hydraulic, thermal, and/or chemical stimulation of one or more tight injection wells; To increase the productivity of the Cosofield by 10 MWe; To develop and calibrate geomechanical, geochemical, and fluid flow models in order to extend the Coso/EGS concepts to wherever appropriate tectonic and thermal conditions apply.

329

FIVE-YEAR PROGRESS REPORT ON A SUCCESSFUL SOLAR/GEOTHERMAL HEATING AND COOLING SYSTEM FOR A COMMERCIAL OFFICE BUILDING IN BURLINGTON, MASSACHUSETTS  

Science Journals Connector (OSTI)

ABSTRACT The purpose of this paper is to present: 1) a description of a solar/geothermal heating and cooling system that has been in successful operation in a commercial office building for over five years; and 2) to present technical and cost operational results that indicate a total annual energy consumption of approximately 25,000 Btu/sq ft/ year. The paper includes a general description of the three-story multi-tenant office building located in Burlington, Massachusetts, its energy efficient design features, its active solar space heating and hot water system, its solar/geothermal heat pump back-up heating system and its geothermal cooling system. A description of the solar/geothermal system is presented including the liquid flat plate collectors, storage tanks, heat exchangers, heat pump, heat transfer fluid, control system, operational modes and the energy monitoring system. KEYWORDS Solar space heating; geothermal heating; geothermal cooling; solar domestic hot water; energy monitoring and control.

John Zvara; P.E.; Ronald J. Adams

1986-01-01T23:59:59.000Z

330

Economic assessment of geothermal district heating systems: A case study of Balcova–Narlidere, Turkey  

Science Journals Connector (OSTI)

Geothermal energy is an important renewable energy resource in Turkey. The aim of this research is to evaluate the Balcova–Narlidere geothermal district heating system from an economic perspective. The system is the largest one in Turkey in terms of heating capacity and located in Izmir. Although there are some assessments regarding energy and exergy analysis for the Balcova–Narlidere geothermal district heating system, an economic assessment was not performed, previously. The profitability of the investment is investigated by using internal rate of return method. Seven hundred and eighty different scenarios are developed in this assessment. In order to estimate the potential cash flows in the remaining project life, operating cost in 2002 is decreased and increased, alternatively, between 5% and 30% by 5% in each step, while monthly energy utilization price is changed between US$ 17 and 72 in those scenarios. The energy utilization prices are suggested according to zero IRR value for all scenarios due to the consideration of social and environmental concerns in this investment. It is found that, the proper monthly energy utilization price for a 100 m2 household would be US$ 55.5 when the operating cost and heating capacity in 2002 were remained constant.

Berkan Erdogmus; Macit Toksoy; Baris Ozerdem; Niyazi Aksoy

2006-01-01T23:59:59.000Z

331

Energy Department Announces Up to $31 Million for Initial Phases of Enhanced Geothermal Systems Field Observatory  

Office of Energy Efficiency and Renewable Energy (EERE)

As part of the Administration’s all-of-the-above energy strategy, the Energy Department today announced up to $31 million to establish the initial phases of the Frontier Observatory for Research in Geothermal Energy (FORGE), a field laboratory dedicated to cutting-edge research on enhanced geothermal systems (EGS). EGS are engineered reservoirs, created beneath the surface of the Earth, where there is hot rock but limited pathways through which fluid can flow. During EGS development, underground fluid pathways are safely created and their size and connectivity increased. These enhanced pathways allow fluid to circulate throughout the hot rock and carry heat to the surface to generate electricity. In the long term, EGS may enable domestic access to a geographically diverse baseload, and carbon-free energy resource on the order of 100 gigawatts, or enough to power about 100 million homes.

332

Multielement geochemistry of solid materials in geothermal systems and its applications. Part 1. Hot-water system at the Roosevelt Hot Springs KGRA, Utah  

SciTech Connect

Geochemical studies of the geothermal system at Roosevelt Hot Springs, Utah, have led to development of chemical criteria for recognition of major features of the system and to a three-dimensional model for chemical zoning in the system. Based on this improved level of understanding several new or modified geochemical exploration and assessment techniques have been defined and are probably broadly applicable to evaluation of hot-water geothermal systems. The main purpose of this work was the development or adaptation of solids geochemical exploration techniques for use in the geothermal environment. (MHR)

Bamford, R.W.; Christensen, O.D.; Capuano, R.M.

1980-02-01T23:59:59.000Z

333

Insights From Laboratory Experiments On Simulated Faults With Application To Fracture Evolution In Geothermal Systems  

SciTech Connect

Laboratory experiments provide a wealth of information related to mechanics of fracture initiation, fracture propagation processes, factors influencing fault strength, and spatio-temporal evolution of fracture properties. Much of the existing literature reports on laboratory studies involving a coupling of thermal, hydraulic, mechanical, and/or chemical processes. As these processes operate within subsurface environments exploited for their energy resource, laboratory results provide insights into factors influencing the mechanical and hydraulic properties of geothermal systems. I report on laboratory observations of strength and fluid transport properties during deformation of simulated faults. The results show systematic trends that vary with stress state, deformation rate, thermal conditions, fluid content, and rock composition. When related to geophysical and geologic measurements obtained from engineered geothermal systems (e.g. microseismicity, wellbore studies, tracer analysis), laboratory results provide a means by which the evolving thermal reservoir can be interpreted in terms of physico-chemical processes. For example, estimates of energy release and microearthquake locations from seismic moment tensor analysis can be related to strength variations observed from friction experiments. Such correlations between laboratory and field data allow for better interpretations about the evolving mechanical and fluid transport properties in the geothermal reservoir – ultimately leading to improvements in managing the resource.

Stephen L. Karner, Ph.D

2006-06-01T23:59:59.000Z

334

Levelized costs of electricity and direct-use heat from Enhanced Geothermal Systems  

Science Journals Connector (OSTI)

GEOPHIRES (GEOthermal energy for the Production of Heat and Electricity (“IR”) Economically Simulated) is a software tool that combines reservoir wellbore and power plant models with capital and operating cost correlations and financial levelized cost models to assess the technical and economic performance of Enhanced Geothermal Systems (EGS). It is an upgrade and expansion of the “MIT-EGS” program used in the 2006 “Future of Geothermal Energy” study. GEOPHIRES includes updated cost correlations for well drilling and completion resource exploration and Organic Rankine Cycle (ORC) and flash power plants. It also has new power plant efficiency correlations based on AspenPlus and MATLAB simulations. The structure of GEOPHIRES enables feasibility studies of using geothermal resources not only for electricity generation but also for direct-use heating and combined heat and power (CHP) applications. Full documentation on GEOPHIRES is provided in the supplementary material. Using GEOPHIRES the levelized cost of electricity (LCOE) and the levelized cost of heat (LCOH) have been estimated for 3 cases of resource grade (low- medium- and high-grade resource corresponding to a geothermal gradient of 30 50 and 70?°C/km) in combination with 3 levels of technological maturity (today's mid-term and commercially mature technology corresponding to a productivity of 30 50 and 70?kg/s per production well and thermal drawdown rate of 2% 1.5% and 1%). The results for the LCOE range from 4.6 to 57 ¢/kWhe and for the LCOH from 3.5 to 14 $/MMBTU (1.2 to 4.8 ¢/kWhth). The results for the base-case scenario (medium-grade resource and mid-term technology) are 11 ¢/kWhe and 5 $/MMBTU (1.7 ¢/kWhth) respectively. To account for parameter uncertainty a sensitivity analysis has been included. The results for the LCOE and LCOH have been compared with values found in literature for EGS as well as other energy technologies. The key findings suggest that given today's technology maturity electricity and direct-use heat from EGS are not economically competitive under current market conditions with other energy technologies. However with moderate technological improvements electricity from EGS is predicted to become cost-effective with respect to other renewable and non-renewable energy sources for medium- and high-grade geothermal resources. Direct-use heat from EGS is calculated to become cost-effective even for low-grade resources. This emphasizes that EGS for direct-use heat may not be neglected in future EGS development.

2014-01-01T23:59:59.000Z

335

Geothermal Literature Review At Long Valley Caldera Geothermal Area (1984)  

Open Energy Info (EERE)

Geothermal Literature Review At Long Valley Caldera Geothermal Area (1984) Geothermal Literature Review At Long Valley Caldera Geothermal Area (1984) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Long Valley Caldera Geothermal Area (1984) Exploration Activity Details Location Long Valley Caldera Geothermal Area Exploration Technique Geothermal Literature Review Activity Date 1984 Usefulness not indicated DOE-funding Unknown Notes The melt zones of volcanic clusters was analyzed with recent geological and geophysical data for five magma-hydrothermal systems were studied for the purpose of developing estimates for the depth, volume and location of magma beneath each area. References Goldstein, N. E.; Flexser, S. (1 December 1984) Melt zones beneath five volcanic complexes in California: an assessment of shallow

336

Piping network design of geothermal district heating systems: Case study for a university campus  

Science Journals Connector (OSTI)

Geothermal district heating system design consists of two parts: heating system and piping network design. District heating system design and a case study for a university campus is given in Yildirim et al. [1] in detail. In this study, piping network design optimisation is evaluated based on heat centre location depending upon the cost and common design parameters of piping networks which are pipe materials, target pressure loss (TPL) per unit length of pipes and installation type. Then a case study for the same campus is presented.

Nurdan Yildirim; Macit Toksoy; Gulden Gokcen

2010-01-01T23:59:59.000Z

337

Geothermal Blog  

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

96 Geothermal Blog en Geothermal Blog http:energy.goveeregeothermal-blog Geothermal Blog

338

Geothermal Heat Pump System for the New 500-bed 200,000 SF Student Housing Project at the University at Albanys Main Campus  

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

This project proposes to heat and cool planned 500-bed apartment-style student housing with closed loop vertical bore geothermal heat pump system installation.

339

Geothermal Resources Council's 36  

Office of Scientific and Technical Information (OSTI)

Geothermal Resources Council's 36 Geothermal Resources Council's 36 th Annual Meeting Reno, Nevada, USA September 30 - October 3, 2012 Advanced Electric Submersible Pump Design Tool for Geothermal Applications Xuele Qi, Norman Turnquist, Farshad Ghasripoor GE Global Research, 1 Research Circle, Niskayuna, NY, 12309 Tel: 518-387-4748, Email: qixuele@ge.com Abstract Electrical Submersible Pumps (ESPs) present higher efficiency, larger production rate, and can be operated in deeper wells than the other geothermal artificial lifting systems. Enhanced Geothermal Systems (EGS) applications recommend lifting 300°C geothermal water at 80kg/s flow rate in a maximum 10-5/8" diameter wellbore to improve the cost-effectiveness. In this paper, an advanced ESP design tool comprising a 1D theoretical model and a 3D CFD analysis

340

Geothermal Technologies | Open Energy Information  

Open Energy Info (EERE)

Geothermal Technologies Geothermal Technologies (Redirected from Geothermal Conversion Technologies) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Geothermal Technologies Geothermal energy can be utilized for electricity or heating in more than one way. Regardless of the energy conversion, geothermal energy requires heat(in the form of rock), water, and flow; and every resources will have different values for each. Some resources have very high temperature rock with high porosity (allowing for flow) but little to know water (see Enhanced Geothermal Systems (EGS). Some resources have plenty of water, great flow, but the temperatures are not very high which are commonly used for direct use. Any combination of those 3 things can be found in nature, and for that reason there are different classifications of geothermal

Note: This page contains sample records for the topic "geothermal system cxs" 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.


341

Snake River Geothermal Project - Innovative Approaches to Geothermal...  

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

Snake River Geothermal Project - Innovative Approaches to Geothermal Exploration Snake River Geothermal Project - Innovative Approaches to Geothermal Exploration DOE Geothermal...

342

Enhanced Geothermal Systems (EGS) with CO2 as Heat Transmission Fluid  

Open Energy Info (EERE)

with CO2 as Heat Transmission Fluid with CO2 as Heat Transmission Fluid Geothermal Lab Call Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Enhanced Geothermal Systems (EGS) with CO2 as Heat Transmission Fluid Project Type / Topic 1 Laboratory Call for Submission of Applications for Research, Development and Analysis of Geothermal Technologies Project Type / Topic 2 Supercritical Carbon Dioxide / Reservoir Rock Chemical Interactions Project Description Previous and current attempts to develop EGS in the U.S., Japan, Europe and Australia have all employed water as a heat transmission fluid. Water has many properties that make it a favorable medium for heat extraction, but it also has serious drawbacks. The use of supercritical CO2 (scCO2) instead of water as heat extraction fluid was suggested by Donald Brown of Los Alamos National Laboratory as a "game changing" alternative that can avoid the problems of aqueous fluids, make heretofore inaccessible energy resources available for human use, and provide ancillary benefits by using and storing CO2.

343

Laboratory testing and modeling to evaluate perfluorocarbon compounds as tracers in geothermal systems  

SciTech Connect

The thermal stability and adsorption characteristics of three perfluorinated hydrocarbon compounds were evaluated under geothermal conditions to determine the potential to use these compounds as conservative or thermally-degrading tracers in Engineered (or Enhanced) Geothermal Systems (EGS). The three compounds tested were perfluorodimethyl-cyclobutane (PDCB), perfluoromethylcyclohexane (PMCH), and perfluorotrimethylcyclohexane (PTCH), which are collectively referred to as perfluorinated tracers, or PFTs. Two sets of duplicate tests were conducted in batch mode in gold-bag reactors, with one pair of reactors charged with a synthetic geothermal brine containing the PFTs and a second pair was charged with the brine-PFT mixture plus a mineral assemblage chosen to be representative of activated fractures in an EGS reservoir. A fifth reactor was charged with deionized water containing the three PFTs. The experiments were conducted at {approx}100 bar, with temperatures ranging from 230 C to 300 C. Semi-analytical and numerical modeling was also conducted to show how the PFTs could be used in conjunction with other tracers to interrogate surface area to volume ratios and temperature profiles in EGS reservoirs. Both single-well and cross-hole tracer tests are simulated to illustrate how different suites of tracers could be used to accomplish these objectives. The single-well tests are especially attractive for EGS applications because they allow the effectiveness of a stimulation to be evaluated without drilling a second well.

Reimus, Paul W [Los Alamos National Laboratory

2011-01-21T23:59:59.000Z

344

Geothermal Tomorrow  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Eritrea, and Djibouti. Kenya was the first of these countries to develop geothermal energy and has the largest geothermal plant in Africa-near Naivasha (Olkaria), yield- ing...

345

Geothermal drilling technology update  

SciTech Connect

Sandia National Laboratories conducts a comprehensive geothermal drilling research program for the US Department of Energy, Office of Geothermal Technologies. The program currently includes seven areas: lost circulation technology, hard-rock drill bit technology, high-temperature instrumentation, wireless data telemetry, slimhole drilling technology, Geothermal Drilling Organization (GDO) projects, and drilling systems studies. This paper describes the current status of the projects under way in each of these program areas.

Glowka, D.A.

1997-04-01T23:59:59.000Z

346

Helium isotopes in geothermal systems- Iceland, The Geysers,...  

Open Energy Info (EERE)

MOR type magmatic He again implying an active volcanic source possibly a "leaky" transform related to the San Andreas Fault System. Raft River contains only crustal He...

347

Flathead Electric Cooperative Facility Geothermal Heat Pump System...  

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

Cooperative is uniquely positioned to provide marketing of ground source heat pump systems * 15' Static Water Level * Low Pumping Power * Reduced Installation Costs * Good...

348

Quantum Dot Tracers for Use in Engineered Geothermal Systems  

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

define the subsurface system of fractures and mapping of fluid flow. * limited fracture detection capability * lack of high-temperature monitoring tools and sensors *...

349

Characteristics of Basin and Range Geothermal Systems with Fluid...  

Open Energy Info (EERE)

Our ability to distinguish between moderate and high temperature systems using fluid chemistry has been limited by often inaccurate estimates based on shallow samples and by a...

350

Energetic and economic evaluations of geothermal district heating systems by using ANN  

Science Journals Connector (OSTI)

This paper proposes an artificial neural network (ANN) technique as a new approach to evaluate the energy input, losses, output, efficiency, and economic optimization of a geothermal district heating system (GDHS). By using ANN, an energetic analysis is evaluated on the Afyon geothermal district heating system (AGDHS) located in the city of Afyonkarahisar, Turkey. Promising results are obtained about the economic evaluation of that system. This has been used to determine if the existing system is operating at its optimal level, and will provide information about the optimal design and profitable operation of the system. The results of the study show that the ANN model used for the prediction of the energy performance of the AGDHS has good statistical performance values: a correlation coefficient of 0.9983 with minimum RMS and MAPE values. The total cost for the AGDHS is profitable when the PWF is higher than 7.9. However, the PWF of the AGDHS was found to be 1.43 for the given values. As a result, while installing a GDHS, one should take into account the influences of the PWF, ambient temperature and flow rate on the total costs of the system in any location where it is to be established.

Ali Keçeba?; Mehmet Ali Alkan; ?smail Yabanova; Mehmet Yumurtac?

2013-01-01T23:59:59.000Z

351

Numerical studies of fluid-rock interactions in Enhanced Geothermal Systems (EGS) with CO2 as working fluid  

E-Print Network (OSTI)

2006), “The Future of Geothermal Energy Impact of Enhanced2000), “A Hot Dry Rock Geothermal Energy Concept UtilizingEnergy has broadly defined Enhanced (or Engineered) Geothermal

Xu, Tianfu; Pruess, Karsten; Apps, John

2008-01-01T23:59:59.000Z

352

Flathead Electric Cooperative Facility Geothermal Heat Pump System Upgrade  

SciTech Connect

High initial cost and lack of public awareness of ground source heat pump (GSHP) technology are the two major barriers preventing rapid deployment of this energy saving technology in the United States. Under the American Recovery and Reinvestment Act (ARRA), 26 GSHP projects have been competitively selected and carried out to demonstrate the benefits of GSHP systems and innovative technologies for cost reduction and/or performance improvement. This paper highlights findings of a case study of one of the ARRA-funded GSHP demonstration projects, which is a heating only central GSHP system using shallow aquifer as heat source and installed at a warehouse and truck bay at Kalispell, MT. This case study is based on the analysis of measured performance data, utility bills, and calculations of energy consumptions of conventional central heating systems for providing the same heat outputs as the central GSHP system did. The evaluated performance metrics include energy efficiency of the heat pump equipment and the overall GSHP system, pumping performance, energy savings, carbon emission reductions, and cost-effectiveness of GSHP system compared with conventional heating systems. This case study also identified areas for reducing uncertainties in performance evaluation, improving operational efficiency, and reducing installed cost of similar GSHP systems in the future. Publication of ASHRAE at the annual conference in Seattle.

Liu, Xiaobing [Oak Ridge National Lab] [Oak Ridge National Lab

2014-06-01T23:59:59.000Z

353

South Dakota geothermal resources  

SciTech Connect

South Dakota is normally not thought of as a geothermal state. However, geothermal direct use is probably one of the best kept secrets outside the state. At present there are two geothermal district heating systems in place and operating successfully, a resort community using the water in a large swimming pool, a hospital being supplied with part of its heat, numerous geothermal heat pumps, and many individual uses by ranchers, especially in the winter months for heating residences, barns and other outbuildings, and for stock watering.

Lund, J.W.

1997-12-01T23:59:59.000Z

354

OPTIMIZATION OF HYBRID GEOTHERMAL HEAT PUMP SYSTEMS Scott Hackel, Graduate Research Assistant; Gregory Nellis, Professor; Sanford Klein,  

E-Print Network (OSTI)

1 OPTIMIZATION OF HYBRID GEOTHERMAL HEAT PUMP SYSTEMS Scott Hackel, Graduate Research Assistant, Madison, WI, United States Abstract: Hybrid ground-coupled heat pump systems (HyGCHPs) couple conventional ground- coupled heat pump (GCHP) equipment with supplemental heat rejection or extraction systems

Wisconsin at Madison, University of

355

Energetic, exergetic, economic and environmental evaluations of geothermal district heating systems: An application  

Science Journals Connector (OSTI)

This study deals with an energetic and exergetic analysis as well as economic and environmental evaluations of Afyon geothermal district heating system (AGDHS) in Afyon, Turkey. In the analysis, actual system data are used to assess the district heating system performance, energy and exergy efficiencies, specific exergy index, exergetic improvement potential and exergy losses. And, for economic and environmental evaluations, actual data are obtained from the Technical Departments. The energy and exergy flow diagrams are clearly drawn to illustrate how much destructions/losses take place in addition to the inputs and outputs. For system performance analysis and improvement, both energy and exergy efficiencies of the overall AGDHS are determined to be 34.86% and 48.78%, respectively. The efficiency improvements in heat and power systems can help achieving energy security in an environmentally acceptable way by reducing the emissions that might otherwise occur. Present application has shown that in Turkey, geothermal energy is much cheaper than the other energy sources, like fossil fuels, and makes a significant contribution towards reducing the emissions of air pollution.

Ali Keçeba?

2013-01-01T23:59:59.000Z

356

How an Enhanced Geothermal System Works | Department of Energy  

Office of Environmental Management (EM)

and proven. The Concept The EGS concept is to extract heat by creating a subsurface fracture system to which water can be added through injection wells. Creating an enhanced, or...

357

Development of a plan to implement enhanced geothermal system...  

Open Energy Info (EERE)

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...

358

Analysis of Low-Temperature Utilization of Geothermal Resources Geothermal  

Open Energy Info (EERE)

Temperature Utilization of Geothermal Resources Geothermal Temperature Utilization of Geothermal Resources Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Analysis of Low-Temperature Utilization of Geothermal Resources Project Type / Topic 1 Recovery Act: Enhanced Geothermal Systems Component Research and Development/Analysis Project Type / Topic 2 Geothermal Analysis Project Description In this proposal West Virginia University (WVU) outline a project which will perform an in-depth analysis of the low-temperature geothermal resources that dominate the eastern half of the United States. Full realization of the potential of what might be considered "low-grade" geothermal resources will require the examination many more uses for the heat than traditional electricity generation. To demonstrate that geothermal energy truly has the potential to be a national energy source the project will be designing, assessing, and evaluating innovative uses for geothermal-produced water such as hybrid biomass-geothermal cogeneration of electricity and district heating and efficiency improvements to the use of cellulosic biomass in addition to utilization of geothermal in district heating for community redevelopment projects.

359

Dixie Valley Engineered Geothermal System Exploration Methodology Project, Baseline Conceptual Model Report  

SciTech Connect

The Engineered Geothermal System (EGS) Exploration Methodology Project is developing an exploration approach for EGS through the integration of geoscientific data. The Project chose the Dixie Valley Geothermal System in Nevada as a field laboratory site for methodology calibration purposes because, in the public domain, it is a highly characterized geothermal system in the Basin and Range with a considerable amount of geoscience and most importantly, well data. The overall project area is 2500km2 with the Calibration Area (Dixie Valley Geothermal Wellfield) being about 170km2. The project was subdivided into five tasks (1) collect and assess the existing public domain geoscience data; (2) design and populate a GIS database; (3) develop a baseline (existing data) geothermal conceptual model, evaluate geostatistical relationships, and generate baseline, coupled EGS favorability/trust maps from +1km above sea level (asl) to -4km asl for the Calibration Area at 0.5km intervals to identify EGS drilling targets at a scale of 5km x 5km; (4) collect new geophysical and geochemical data, and (5) repeat Task 3 for the enhanced (baseline + new ) data. Favorability maps were based on the integrated assessment of the three critical EGS exploration parameters of interest: rock type, temperature and stress. A complimentary trust map was generated to compliment the favorability maps to graphically illustrate the cumulative confidence in the data used in the favorability mapping. The Final Scientific Report (FSR) is submitted in two parts with Part I describing the results of project Tasks 1 through 3 and Part II covering the results of project Tasks 4 through 5 plus answering nine questions posed in the proposal for the overall project. FSR Part I presents (1) an assessment of the readily available public domain data and some proprietary data provided by Terra-Gen Power, LLC, (2) a re-interpretation of these data as required, (3) an exploratory geostatistical data analysis, (4) the baseline geothermal conceptual model, and (5) the EGS favorability/trust mapping. The conceptual model presented applies to both the hydrothermal system and EGS in the Dixie Valley region. FSR Part II presents (1) 278 new gravity stations; (2) enhanced gravity-magnetic modeling; (3) 42 new ambient seismic noise survey stations; (4) an integration of the new seismic noise data with a regional seismic network; (5) a new methodology and approach to interpret this data; (5) a novel method to predict rock type and temperature based on the newly interpreted data; (6) 70 new magnetotelluric (MT) stations; (7) an integrated interpretation of the enhanced MT data set; (8) the results of a 308 station soil CO2 gas survey; (9) new conductive thermal modeling in the project area; (10) new convective modeling in the Calibration Area; (11) pseudo-convective modeling in the Calibration Area; (12) enhanced data implications and qualitative geoscience correlations at three scales (a) Regional, (b) Project, and (c) Calibration Area; (13) quantitative geostatistical exploratory data analysis; and (14) responses to nine questions posed in the proposal for this investigation. Enhanced favorability/trust maps were not generated because there was not a sufficient amount of new, fully-vetted (see below) rock type, temperature, and stress data. The enhanced seismic data did generate a new method to infer rock type and temperature. However, in the opinion of the Principal Investigator for this project, this new methodology needs to be tested and evaluated at other sites in the Basin and Range before it is used to generate the referenced maps. As in the baseline conceptual model, the enhanced findings can be applied to both the hydrothermal system and EGS in the Dixie Valley region.

Iovenitti, Joe

2014-01-02T23:59:59.000Z

360

Investigation of some renewable energy and exergy parameters for two Geothermal District Heating Systems  

Science Journals Connector (OSTI)

In this study, three new exergy parameters, namely total exergy destruction ratio, component exergy destruction ratio and dimensionless exergy destruction are introduced in addition to energetic renewability ratio, exergetic renewability ratio, energetic reinjection ratio and exergetic reinjection ratio, and compared for Edremit and Bigadic Geothermal District Heating Systems (GDHSs) based on their actual data. The respective daily graphs of these parameters are presented. Also, regression analyses using the actual data are performed to obtain some correlations for practical use. In brief, these parameters help us to identify the degree of renewability and other aspects and provide some insights.

C. Coskun; Z. Oktay; I. Dincer

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "geothermal system cxs" 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

Chapter 12 - Geothermal Energy  

Science Journals Connector (OSTI)

Publisher Summary This chapter discusses where the earth's thermal energy is sufficiently concentrated for economic use, the various types of geothermal systems, the production and utilization of the resource, and the environmental benefits and costs of geothermal production. Earth scientists quantify the energy and temperature in the earth in terms of heat flow and temperature gradient. The heat of the earth is derived from two components: the heat generated by the formation of the earth, and heat generated by radioactive decay of elements in the upper parts of the earth. The word “geothermal” comes from the combination of the Greek words gêo, meaning earth, and thérm, meaning heat. Geothermal resources are concentrations of the earth's heat, or geothermal energy, that can be extracted and used economically now or in the reasonable future. The earth contains an immense amount of heat but the heat generally is too diffuse or deep for economic use. Hence, the search for geothermal resources focuses on those areas of the earth's crust where geological processes have raised temperatures near enough to the surface that the heat contained can be utilized. Currently, only concentrations of heat associated with water in permeable rocks can be exploited economically. These systems are known as hydrothermal geothermal systems. All commercial geothermal production is currently restricted to geothermal systems that are sufficiently hot for the use and that contain a reservoir with sufficient available water and productivity for economic development. Geothermal energy is one of the cleaner forms of energy now available in commercial quantities. Use of geothermal energy avoids the problems of acid rain and greatly reduces greenhouse gas emissions and other forms of air pollution.

Joel L. Renner

2008-01-01T23:59:59.000Z

362

Accelerating Geothermal Research (Fact Sheet)  

SciTech Connect

Geothermal research at the National Renewable Energy Laboratory (NREL) is advancing geothermal technologies to increase renewable power production. Continuous and not dependent on weather, the geothermal resource has the potential to jump to more than 500 gigawatts in electricity production, which is equivalent to roughly half of the current U.S. capacity. Enhanced geothermal systems have a broad regional distribution in the United States, allowing the potential for development in many locations across the country.

Not Available

2014-05-01T23:59:59.000Z

363

Geothermal Literature Review At Coso Geothermal Area (1984) | Open Energy  

Open Energy Info (EERE)

Geothermal Literature Review At Coso Geothermal Area Geothermal Literature Review At Coso Geothermal Area (1984) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Geothermal Literature Review Activity Date 1984 Usefulness not indicated DOE-funding Unknown Exploration Basis To characterize the magma beneath melt zones Notes The melt zones of volcanic clusters were analyzed with recent geological and geophysical data for five magma-hydrothermal systems. These were studied for the purpose of developing estimates for the depth, volume and location of magma beneath each area. References Goldstein, N. E.; Flexser, S. (1 December 1984) Melt zones beneath five volcanic complexes in California: an assessment of shallow magma occurrences Retrieved from "http://en.openei.org/w/index.php?title=Geothermal_Literature_Review_At_Coso_Geothermal_Area_(1984)&oldid=510800"

364

Geothermal Energy Program overview  

SciTech Connect

The mission of the Geothermal Energy Program is to develop the science and technology necessary for tapping our nation's tremendous heat energy sources contained with the Earth. Geothermal energy is a domestic energy source that can produce clean, reliable, cost- effective heat and electricity for our nation's energy needs. Geothermal energy -- the heat of the Earth -- is one of our nation's most abundant energy resources. In fact, geothermal energy represents nearly 40% of the total US energy resource base and already provides an important contribution to our nation's energy needs. Geothermal energy systems can provide clean, reliable, cost-effective energy for our nation's industries, businesses, and homes in the form of heat and electricity. The US Department of Energy's (DOE) Geothermal Energy Program sponsors research aimed at developing the science and technology necessary for utilizing this resource more fully. Geothermal energy originates from the Earth's interior. The hottest fluids and rocks at accessible depths are associated with recent volcanic activity in the western states. In some places, heat comes to the surface as natural hot water or steam, which have been used since prehistoric times for cooking and bathing. Today, wells convey the heat from deep in the Earth to electric generators, factories, farms, and homes. The competitiveness of power generation with lower quality hydrothermal fluids, geopressured brines, hot dry rock, and magma ( the four types of geothermal energy) still depends on the technical advancements sought by DOE's Geothermal Energy Program.

Not Available

1991-12-01T23:59:59.000Z

365

Rock Mechanics and Enhanced Geothermal Systems: A DOE-sponsored Workshop to Explore Research Needs  

SciTech Connect

This workshop on rock mechanics and enhanced geothermal systems (EGS) was held in Cambridge, Mass., on June 20-21 2003, before the Soil and Rock America 2003 International Conference at MIT. Its purpose was to bring together experts in the field of rock mechanics and geothermal systems to encourage innovative thinking, explore new ideas, and identify research needs in the areas of rock mechanics and rock engineering applied to enhanced geothermal systems. The agenda is shown in Appendix A. The workshop included experts in the fields of rock mechanics and engineering, geological engineering, geophysics, drilling, the geothermal energy production from industry, universities and government agencies, and laboratories. The list of participants is shown is Appendix B. The first day consisted of formal presentations. These are summarized in Chapter 1 of the report. By the end of the first day, two broad topic areas were defined: reservoir characterization and reservoir performance. Working groups were formed for each topic. They met and reported in plenary on the second day. The working group summaries are described in Chapter 2. The final session of the workshop was devoted to reaching consensus recommendations. These recommendations are given in Chapter 3. That objective was achieved. All the working group recommendations were considered and, in order to arrive at a practical research agenda usable by the workshop sponsors, workshop recommendations were reduced to a total of seven topics. These topics were divided in three priority groups, as follows. First-priority research topics (2): {sm_bullet} Define the pre-existing and time-dependent geometry and physical characteristics of the reservoir and its fracture network. That includes the identification of hydraulically controlling fractures. {sm_bullet} Characterize the physical and chemical processes affecting the reservoir geophysical parameters and influencing the transport properties of fractures. Incorporate those processes in reservoir simulators. Second-priority research topics (4): {sm_bullet} Implement and proof-test enhanced fracture detection geophysical methods, such as 3-D surface seismics, borehole seismics, and imaging using earthquake data. {sm_bullet} Implement and proof-test enhanced stress measurement techniques, such as borehole breakout analysis, tilt-meters, and earthquake focal mechanism analysis. {sm_bullet} Implement and proof-test high-temperature down-hole tools for short-term and long-term diagnostics, such as borehole imaging, geophone arrays, packers, and electrical tools.

Francois Heuze; Peter Smeallie; Derek Elsworth; Joel L. Renner

2003-10-01T23:59:59.000Z

366

The smectite to chlorite transition in the Chipilapa geothermal system, El Salvador  

SciTech Connect

Clay mineralogical, X-ray diffraction and electron microprobe studies have been carried out on separated <2 {micro}m fractions from cutting and core material from three wells in the Chipilapa geothermal system in El Salvador. The data indicate that the smectite to chlorite transition is prevalent, but a secondary smectite to illite transition is also present. At depths approximately <750 m, smectite with very minor chlorite mixed-layers (approximately <15%) is dominant, and has a composition midway between a di- and tri-smectite. At {approximately}750 m there is a very clear distinction and sharp transition into discrete chlorite with very minor smectite mixed-layers (approximately <10%). Corrensite is recorded only as a rare and minor phase. Smectite occurs in abundance at temperatures up to {approximately}200 C, and the transition from a smectite-dominant to chlorite-dominant assemblage takes place over a narrow temperature range ({approximately}150 to 200 C). The stability range of smectite is very similar to that recorded in other geothermal systems, whereas the smectite to chlorite transition differs greatly from that recorded in other systems. The transition does not involve continuous chlorite/smectite mixed-layering but a marked step: It is the sharpest and most discontinuous stepped sequence of this mineralogical transition recorded.

Robinson, D. [Univ. of Bristol (United Kingdom). Dept. of Earth Sciences; Santana de Zamora, A. [Comision Ejecutiva Hidroelectrica del Rio Lempa (El Salvador)

1999-04-01T23:59:59.000Z

367

Numerical studies of fluid-rock interactions in Enhanced Geothermal Systems (EGS) with CO2 as working fluid  

E-Print Network (OSTI)

2006), “The Future of Geothermal Energy Impact of Enhanced2000), “A Hot Dry Rock Geothermal Energy Concept Utilizing

Xu, Tianfu; Pruess, Karsten; Apps, John

2008-01-01T23:59:59.000Z

368

Nevada Deploys Grid-Connected Electricity from Enhanced Geothermal...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Nevada Deploys Grid-Connected Electricity from Enhanced Geothermal Systems Nevada Deploys Grid-Connected Electricity from Enhanced Geothermal Systems May 16, 2013 - 12:00am Addthis...

369

Energy Department Announces $10 Million to Speed Enhanced Geothermal...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Energy Department Announces 10 Million to Speed Enhanced Geothermal Systems into the Market Energy Department Announces 10 Million to Speed Enhanced Geothermal Systems into the...

370

State Geological Survey Contributions to the National Geothermal...  

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

Publications AASG State Geological Survey National Geothermal Data Systems Data Acquisition and Access National Geothermal Data System Architecture Design, Testing and Maintenance...

371

Geothermal News and Blog | Department of Energy  

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

About Us » News & Blog » Geothermal News and Blog About Us » News & Blog » Geothermal News and Blog Geothermal News and Blog Blog This diagram shows how electricity is produced using enhanced geothermal systems. | Energy Department Geothermal Energy: A Glance Back and a Leap Forward October 23, 2013 1:31 PM This year marks the centennial of the first commercial electricity production from geothermal resources. As geothermal technologies advance, the Energy Department is working to improve, and lower the cost of, enhanced geothermal systems. Read The Full Story Learn the basics of enhanced geothermal systems technology. I Infographic by Sarah Gerrity. Enhanced Geothermal in Nevada: Extracting Heat From the Earth to Generate

372

Energy and economic analysis of geothermal–solar trigeneration systems: A case study for a hotel building in Ischia  

Science Journals Connector (OSTI)

Abstract This paper presents the design, simulation and optimisation of a small trigeneration plant supplied by geothermal and solar energies. Different technologies are implemented in a dynamic simulation model purposely developed for research scope: a 6 kWe micro Organic Rankine Cycle (ORC); a 30 kWf single stage H2O/LiBr absorption chiller; a geothermal well; a solar field obtained by new prototypal flat-plate evacuated solar collectors. The ORC is supplied by heat obtained by a geothermal well in which geothermal brine is about at 95 °C. In order to improve system performance, additional heat is provided by solar energy obtained through a 25 m2 solar field. Diathermic oil (up to 130 °C) is adopted as working fluid in order to supply heat to the ORC evaporator. A suitable oil storage tank is modelled in order to mitigate the temperature fluctuations due to the variability of solar energy availability. The output power of the ORC depends on the availability of solar energy. The absorption chiller is switched-on in summer time and it is fed by geothermal energy only. This simulation model is implemented in TRNSYS environment. The ORC is modelled by zero-dimensional energy and mass balances implemented in Engineering Equation Solver (EES). A case study is developed in order to test the energy and economic performance of this innovative micro-trigeneration plant. In particular, the above mentioned model is applied to the Regina Isabella hotel in Ischia (Naples, South Italy), famous for its geothermal sources. Currently, such hotel is already equipped by a geothermal system (by several hot water wells) for thermal cares, domestic hot water production and space heating. By TRNSYS the optimisation of the system design parameters and the calculation of the thermo-economic conditions were performed. The system showed excellent energy performance indexes. In fact, the average yearly efficiency of the solar thermal collectors is close to 60%, whereas the average yearly ORC electric efficiency is about 6%, which is a good achievement considering the system driving temperature. Results also show that the system performance is more dependent on the availability of the geothermal energy than the solar one. From the economic point of view, good results are also obtained. In fact, in the worst operating conditions the Simple Pay Back Period is 7.6 years, decreasing to 2.5 years in the most convenient considered scenario (public funding and full utilisation of the produced thermal energy).

Annamaria Buonomano; Francesco Calise; Adolfo Palombo; Maria Vicidomini

2015-01-01T23:59:59.000Z

373

Creation of an Enhanced Geothermal System through Hydraulic and Thermal Stimulation  

SciTech Connect

This report describes a 10-year DOE-funded project to design, characterize and create an Engineered Geothermal System (EGS) through a combination of hydraulic, thermal and chemical stimulation techniques. Volume 1 describes a four-year Phase 1 campaign, which focused on the east compartment of the Coso geothermal field. It includes a description of the geomechanical, geophysical, hydraulic, and geochemical studies that were conducted to characterize the reservoir in anticipation of the hydraulic stimulation experiment. Phase 1 ended prematurely when the drill bit intersected a very permeable fault zone during the redrilling of target stimulation well 34-9RD2. A hydraulic stimulation was inadvertently achieved, however, since the flow of drill mud from the well into the formation created an earthquake swarm near the wellbore that was recorded, located, analyzed and interpreted by project seismologists. Upon completion of Phase 1, the project shifted focus to a new target well, which was located within the southwest compartment of the Coso geothermal field. Volume 2 describes the Phase 2 studies on the geomechanical, geophysical, hydraulic, and geochemical aspects of the reservoir in and around target-stimulation well 46A-19RD, which is the deepest and hottest well ever drilled at Coso. Its total measured depth exceeding 12,000 ft. It spite of its great depth, this well is largely impermeable below a depth of about 9,000 ft, thus providing an excellent target for stimulation. In order to prepare 46A-19RD for stimulation, however, it was necessary to pull the slotted liner. This proved to be unachievable under the budget allocated by the Coso Operating Company partners, and this aspect of the project was abandoned, ending the program at Coso. The program then shifted to the EGS project at Desert Peak, which had a goal similar to the one at Coso of creating an EGS on the periphery of an existing geothermal reservoir. Volume 3 describes the activities that the Coso team contributed to the Desert Peak project, focusing largely on a geomechanical investigation of the Desert Peak reservoir, tracer testing between injectors 21-2 and 22-22 and the field�������¢����������������s main producers, and the chemical stimulation of target well 27-15.

Rose, Peter Eugene [Energy and Geoscience Institute at the University of Utah

2013-04-15T23:59:59.000Z

374

Creation of an Enhanced Geothermal System through Hydraulic and Thermal Stimulation  

SciTech Connect

This report describes a 10-year DOE-funded project to design, characterize and create an Engineered Geothermal System (EGS) through a combination of hydraulic, thermal and chemical stimulation techniques. Volume 1 describes a four-year Phase 1 campaign, which focused on the east compartment of the Coso geothermal field. It includes a description of the geomechanical, geophysical, hydraulic, and geochemical studies that were conducted to characterize the reservoir in anticipation of the hydraulic stimulation experiment. Phase 1 ended prematurely when the drill bit intersected a very permeable fault zone during the redrilling of target stimulation well 34-9RD2. A hydraulic stimulation was inadvertently achieved, however, since the flow of drill mud from the well into the formation created an earthquake swarm near the wellbore that was recorded, located, analyzed and interpreted by project seismologists. Upon completion of Phase 1, the project shifted focus to a new target well, which was located within the southwest compartment of the Coso geothermal field. Volume 2 describes the Phase 2 studies on the geomechanical, geophysical, hydraulic, and geochemical aspects of the reservoir in and around target-stimulation well 46A-19RD, which is the deepest and hottest well ever drilled at Coso. Its total measured depth exceeding 12,000 ft. It spite of its great depth, this well is largely impermeable below a depth of about 9,000 ft, thus providing an excellent target for stimulation. In order to prepare 46A-19RD for stimulation, however, it was necessary to pull the slotted liner. This proved to be unachievable under the budget allocated by the Coso Operating Company partners, and this aspect of the project was abandoned, ending the program at Coso. The program then shifted to the EGS project at Desert Peak, which had a goal similar to the one at Coso of creating an EGS on the periphery of an existing geothermal reservoir. Volume 3 describes the activities that the Coso team contributed to the Desert Peak project, focusing largely on a geomechanical investigation of the Desert Peak reservoir, tracer testing between injectors 21-2 and 22-22 and the field�s main producers, and the chemical stimulation of target well 27-15.

Rose, Peter Eugene [Energy and Geoscience Institute at the Univerity of Utah

2013-04-15T23:59:59.000Z

375

Understanding the Chena Hot Springs, Alaska, geothermal system using temperature and pressure data from exploration boreholes  

Science Journals Connector (OSTI)

Chena Hot Springs is a small, moderate temperature, deep circulating geothermal system, apparently typical of those associated to hot springs of interior Alaska. Multi-stage drilling was used in some exploration boreholes and was found to be useful for understanding subsurface flow characteristics and developing a conceptual model of the system. The results illustrate how temperature profiles illuminate varying pressure versus depth characteristics and can be used alone in cases where staged drilling is not practical. The extensive exploration activities helped define optimal fluid production and injection areas, and showed that the system could provide sufficient hot fluids (?57 °C) to run a 400-kWe binary power plant, which came on line in 2006.

Kamil Erkan; Gwen Holdmann; Walter Benoit; David Blackwell

2008-01-01T23:59:59.000Z

376

Geothermal Basics  

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

Geothermal energy—geo (earth) + thermal (heat)—is heat energy from the earth. What is a geothermal resource? To understand the basics of geothermal energy production, geothermal resources are reservoirs of hot water that exist at varying temperatures and depths below the Earth's surface. Mile-or-more-deep wells can be drilled into underground reservoirs to tap steam and very hot water that can be brought to the surface for use in a variety of applications, including electricity generation, direct use, and heating and cooling. In the United States, most geothermal reservoirs are located in the western states. This page represents how geothermal energy can be harnessed to generate electricity.

377

Geothermal Resources and Technologies | Department of Energy  

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

Geothermal Resources and Technologies Geothermal Resources and Technologies Geothermal Resources and Technologies October 7, 2013 - 9:24am Addthis Photo of steam rising high in the air from a geyser. Geothermal energy leverages heated air and water from beneath the earth's surface. This page provides a brief overview of geothermal energy resources and technologies supplemented by specific information to apply geothermal systems within the Federal sector. Overview Geothermal energy is produced from heat and hot water found within the earth. Federal agencies can harness geothermal energy for heating and cooling air and water, as well as for electricity production. Geothermal resources can be drawn through several resources. The resource can be at or near the surface or miles deep. Geothermal systems move heat

378

Chemical stimulation techniques for geothermal wells: experiments on the three-well EGS system at Soultz-sous-Forêts, France  

Science Journals Connector (OSTI)

Rock matrix stimulation is a method of enhancing well production or injection within a broad range of challenging environments, varying from naturally fractured limestones to sandstones with complex mineralogy. A common and often successful stimulation option, matrix acidizing, utilizes acids that react and remove mineral phases restricting fluid flow. Reviewed is the technology of chemical treatments available for oil, gas and geothermal wells and the key elements and results of the chemical reservoir stimulation program at the Soultz-sous-Forêts, France, Enhanced Geothermal System Project.

Sandrine Portier; François-David Vuataz; Patrick Nami; Bernard Sanjuan; André Gérard

2009-01-01T23:59:59.000Z

379

Report on design, construction, and testing of CO/sub 2/ breakout system for geothermal brines  

SciTech Connect

A skid mounted test facility has been built for determining conditions at which CO/sub 2/ flashes from geothermal brines. The system has been checked and operated at one geothermal plant. It performed as designed. The equipment is designed to operate at temperatures and pressures typical of wells near Heber, California. (Nominally 180/sup 0/C and 300 to 500 psig). It has heat exchangers which can cool the brine to less than 70/sup 0/C. (The cooling water is recirculated after being cooled by a forced air heat exchanger). Breakout pressures can be determined for any temperature between 70/sup 0/C and wellhead temperature. An adjustable orifice provides final control on pressure required to initiate flashing. The orifice is at the bottom of a sight glass. A light beam shines through the sight glass and focuses on a photoelectric cell. The presence of bubbles scatters light and decreases the output of the cell. Results using the cell were more reproducible than those using the naked eye. Results from one test show a smooth curve over the temperature range 75/sup 0/C to 165/sup 0/C. Agreement between the experimental values and calculated ones is discussed.

Robertus, R.J.; Shannon, D.W.; Sullivan, R.G.

1984-03-01T23:59:59.000Z

380

Session 1: Geothermal Pumping Systems and Two-Phase Flow Studies  

SciTech Connect

Improvements in electric submersible pumping systems have resulted in a demonstrated downhole running life of one year for low horsepower units operating in 180 C brine. The implementation of a prototype pressurized lubrication system to prevent brine intrusion and loss of lubricating oil from the motor and protector sections has been successfully tested. Second generation pressurized lubrication systems have been designed and fabricated and will be utilized in downhole production pumping tests during FY84. Pumping system lifetime is currently limited by available power cable designs that are degraded by high-temperature brine. A prototype metal-sheathed power cable has been designed and fabricated and is currently undergoing destructive and nondestructive laboratory testing. This cable design has the potential for eliminating brine intrusion into the power delivery system through the use of a hermatically sealed cable from the surface to the downhole motor. The two-phase flow program is directed at understanding the hydrodynamics of two-phase flows. The two-phase flow regime is characterized by a series of flow patterns that are designated as bubble, slug, churn, and annular flow. Churn flow has received very little scientific attention. This lack of attention cannot be justified because calculations predict that the churn flow pattern will exist over a substantial portion of the two-phase flow zone in producing geothermal wells. The University of Houston is experimentally investigating the dynamics of churn flow and is measuring the holdup over the full range of flow space for which churn flow exists. These experiments are being conducted in an air/water vertical two-phase flow loop. Brown University has constructed and is operating a unique two-phase flow research facility specifically designed to address flow problems of relevance to the geothermal industry. An important feature of the facility is that it is dedicated to two-phase flow of a single substance (including evaporation and condensation) as opposed to the case of a two-component two-phase flow. This facility can be operated with horizontal or vertical test sections of constant diameter or with step changes in diameter to simulate a geothermal well profile.

Hanold, R.J.

1983-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "geothermal system cxs" 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

Potential impacts of artificial intelligence expert systems on geothermal well drilling costs:  

SciTech Connect

The Geothermal research Program of the US Department of Energy (DOE) has as one of its goals to reduce the cost of drilling geothermal wells by 25 percent. To attain this goal, DOE continuously evaluates new technologies to determine their potential in contributing to the Program. One such technology is artifical intelligence (AI), a branch of computer science that, in recent years, has begun to impact the marketplace in a number of fields. Expert systems techniques can (and in some cases, already have) been applied to develop computer-based ''advisors'' to assist drilling personnel in areas such as designing mud systems, casing plans, and cement programs, optimizing drill bit selection and bottom hole asssembly (BHA) design, and alleviating lost circulation, stuck pipe, fishing, and cement problems. Intelligent machines with sensor and/or robotic directly linked to AI systems, have potential applications in areas of bit control, rig hydraulics, pipe handling, and pipe inspection. Using a well costing spreadsheet, the potential savings that could be attributed to each of these systems was calculated for three base cases: a dry steam well at The Geysers, a medium-depth Imerial Valley well, and a deep Imperial Valley well. Based on the average potential savings to be realized, expert systems for handling lost circulations problems and for BHA design are the most likely to produce significant results. Automated bit control and rig hydraulics also exhibit high potential savings, but these savings are extremely sensitive to the assumptions of improved drilling efficiency and the cost of these sytems at the rig. 50 refs., 19 figs., 17 tabs.

Satrape, J.V.

1987-11-24T23:59:59.000Z

382

Geothermal: Home Page  

Office of Scientific and Technical Information (OSTI)

Home Page Home Page Geothermal Technologies Legacy Collection Help/FAQ | Site Map | Contact Us Home/Basic Search About Publications Advanced Search New Hot Docs News Related Links Search for: (Place phrase in "double quotes") Sort By: Relevance Publication Date System Entry Date Document Type Title Research Org Sponsoring Org OSTI Identifier Report Number DOE Contract Number Ascending Descending Search Quickly and easily search geothermal technical and programmatic reports dating from the 1970's to present day. These "legacy" reports are among the most valuable sources of DOE-sponsored information in the field of geothermal energy technology. See "About" for more information. The Geothermal Technologies Legacy Collection is sponsored by the Geothermal Technologies Program, DOE Energy Efficiency and Renewable Energy

383

Comparing advanced exergetic assessments of two geothermal district heating systems for residential buildings  

Science Journals Connector (OSTI)

Abstract Advanced exergy analysis method has been increasingly utilized in analyzing and assessing the performance of energy-related systems in recent years due to more deeply investigating the exergy destructions. In this study, two various geothermal district heating systems (GDHSs), the Afyon and Bigadiç GDHSs, which have been operated in Turkey, were considered to perform their advanced exergy analyses and assessments. The \\{GDHSs\\} studied were also compared with each other for the first time in terms of advanced exergetic aspects. In the analyses and calculations of the GDHS, the actual operational data obtained from the measurements and technical staff were utilized. The overall conventional and advanced exergetic efficiency values for the Afyon GDHS are determined to be 27.53% and 34.72% while those for the Bigadiç GDHS are obtained to be 21.03% and 32.52%, respectively. Considering both the interactions among components and the potential for improving components, more effective and efficient improvement priorities were proposed.

Ali Keçeba?; Can Coskun; Zuhal Oktay; Arif Hepbasli

2014-01-01T23:59:59.000Z

384

Geothermal Energy  

Science Journals Connector (OSTI)

Geothermal energy can be used either to generate base- ... in buildings. Globally, the annual production of geothermal electricity is somewhat smaller than solar PV ... locations with adequate resources. For powe...

Ricardo Guerrero-Lemus; José Manuel Martínez-Duart

2013-01-01T23:59:59.000Z

385

Geothermal energy  

Science Journals Connector (OSTI)

Dry steam areas are probably rare. About 30 areas in the United States have been explored for geothermal energy, but dry steam has been proved only ... « The Geysers ». Extensive utilisation of geothermal energy ...

D. E. White

1966-01-01T23:59:59.000Z

386

Geothermal Data via the Virginia Tech and DMME Portal to the National Geothermal Data System for the Eastern and Southeastern United States from the Regional Geophysics Laboratory of Virginia Polytechnic Institute and State University  

DOE Data Explorer (OSTI)

The former title for this record was "Geothermal Data for the Eastern and Southeastern U.S. from the Regional Geophysics Laboratory of Virginia Tech." The content originally referenced is still available. It includes geothermal maps of seven southeastern states with accompanying data tables. The seven states are: New Jersey, Maryland, Delaware, Virginia, North Carolina, South Caroline, and Georgia. Data types include geothermal data, seismic data, and magnetic and gravity data. Typical geothermal data may include tables of temperature versus depth data, plots of temperature/gradient versus depth, tables of thermal conductivity data, and tables of gamma log data. Other resources available from the RGL provide information about hot springs in the southeastern U.S., temperatures for Atlantic Coastal Plain sediments, and deep fracture permeability in crystalline rocks in the eastern and southeastern U.S. Recently, this website and its collection of geothermal data has been renamed and reorganized as a portal into the National Geothermal Data System, a move that makes far more data both available and integrated.

387

Geothermal Literature Review At Coso Geothermal Area (1985) | Open Energy  

Open Energy Info (EERE)

5) 5) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Geothermal Literature Review Activity Date 1985 Usefulness not indicated DOE-funding Unknown Exploration Basis Need to develop a reservoir model for Coso Notes Analysis of complex geothermal system was done by looking at the available data on the Coso Geothermal Field References Austin, C.F.; Durbin, W.F. (1 September 1985) Coso: example of a complex geothermal reservoir. Final report, 1984-1985 Retrieved from "http://en.openei.org/w/index.php?title=Geothermal_Literature_Review_At_Coso_Geothermal_Area_(1985)&oldid=510801" Category: Exploration Activities What links here Related changes Special pages Printable version Permanent link Browse properties About us Disclaimers

388

Geothermal Literature Review At Geysers Geothermal Area (1984) | Open  

Open Energy Info (EERE)

4) 4) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Geysers Geothermal Area (1984) Exploration Activity Details Location Geysers Geothermal Area Exploration Technique Geothermal Literature Review Activity Date 1984 Usefulness not indicated DOE-funding Unknown Notes The melt zones of volcanic clusters was analyzed with recent geological and geophysical data for five magma-hydrothermal systems were studied for the purpose of developing estimates for the depth, volume and location of magma beneath each area. References Goldstein, N. E.; Flexser, S. (1 December 1984) Melt zones beneath five volcanic complexes in California: an assessment of shallow magma occurrences Retrieved from "http://en.openei.org/w/index.php?title=Geothermal_Literature_Review_At_Geysers_Geothermal_Area_(1984)&oldid=510811

389

Relict Geothermal Features | Open Energy Information  

Open Energy Info (EERE)

Relict Geothermal Features Relict Geothermal Features Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Relict Geothermal Features Dictionary.png Relict Geothermal Features: No definition has been provided for this term. Add a Definition Relict geothermal surface feature, include the mineral formations left behind by hot springs, fumaroles, and geysers as well as the alteration of minerals by geothermal waters (e.g. opalization of sediments). Such alteration and deposits are indicators of past hydrothermal activity. Though surface activity has ceased in many areas, relict geothermal features may indicate the presence of a still active geothermal system below the surface. Retrieved from "http://en.openei.org/w/index.php?title=Relict_Geothermal_Features&oldid=600720"

390

BOREHOLE PRECONDITIONING OF GEOTHERMAL WELLS FOR ENHANCED GEOTHERMAL...  

Open Energy Info (EERE)

Abstract Thermal stimulation can be utilized to precondition a well to optimize fracturing and production during Enhanced Geothermal System (EGS) reservoir development. A...

391

Geothermal Literature Review At Lightning Dock Geothermal Area...  

Open Energy Info (EERE)

Evidence for Large-Scale Laramide Tectonic Inversion and a Mid-Tertiary Caldera Ring Fracture Zone at the Lightning Dock Geothermal System, New Mexico Additional References...

392

SUMMARY OF RESERVOIR ENGINEERING DATA: WAIRAKEI GEOTHERMAL FIELD, NEW ZEALAND  

E-Print Network (OSTI)

mental Effects of Geothermal Power Production Phase IIA,"its development as a geothermal power system, Wairakei andI. (Compiler), Geothermal Steam for Power i n N e w Zealand,

Pritchett, J.W.

2012-01-01T23:59:59.000Z

393

SUMMARY OF RESERVOIR ENGINEERING DATA: WAIRAKEI GEOTHERMAL FIELD, NEW ZEALAND  

E-Print Network (OSTI)

mental Effects of Geothermal Power Production Phase IIA,"its development as a geothermal power system, Wairakei andI. (Compiler), Geothermal Steam for Power i n N e w Zealand,

Pritchett, J.W.

2010-01-01T23:59:59.000Z

394

Geothermal: Sponsored by OSTI -- Survey of expert geological...  

Office of Scientific and Technical Information (OSTI)

Survey of expert geological opinion on feasibility of Plowshare stimulation of natural geothermal systems. Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact...

395

Geothermal: Sponsored by OSTI -- Application of seismic tomographic...  

Office of Scientific and Technical Information (OSTI)

Application of seismic tomographic techniques in the investigation of geothermal systems Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log On...

396

U.S. and Australian Advanced Geothermal Projects Face Setbacks  

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

Efforts to develop and commercialize a new type of geothermal energy, called Enhanced Geothermal Systems (EGS), are facing technical setbacks in both the United States and Australia.

397

Pinpointing America's Geothermal Resources with Open Source Data...  

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

National Geothermal Data System is helping researchers and industry developers cultivate geothermal technology applications in energy and direct-use through an open source data...

398

Geothermal: Sponsored by OSTI -- Ways to Minimize Water Usage...  

Office of Scientific and Technical Information (OSTI)

Ways to Minimize Water Usage in Engineered Geothermal Systems Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log On HomeBasic Search About...

399

Compound and Elemental Analysis At International Geothermal Area...  

Open Energy Info (EERE)

geothermal system structure is changing with time. Gas data routinely measured in most geothermal fields; hence fluid-flow plots as presented here can be accomplished with...

400

Fluid Inclusion Analysis At International Geothermal Area Mexico...  

Open Energy Info (EERE)

geothermal system structure is changing with time. Gas data routinely measured in most geothermal fields; hence fluid-flow plots as presented here can be accomplished with...

Note: This page contains sample records for the topic "geothermal system cxs" 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

Evaluation of Emerging Technology for Geothermal Drilling and...  

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

Technology for Geothermal Drilling and Logging Applications Technology Development and Field Trials of EGS Drilling Systems GEA Geothermal Summit Presentation Lauren Boyd...

402

Geothermal pipeline  

SciTech Connect

This article is a progress and development update of the Geothermal Progress Monitor which describes worldwide events and projects relating to the use of geothermal energy. Three topics are covered in this issue:(1) The proceedings at the 1995 World Geothermal Congress held in Florence, Italy. United States Energy Secretary Hazel O`Leary addressed the congress and later met with a group of mainly U.S. conferees to discuss competitiveness and the state of the geothermal industry, (2) A session at the World Geothermal Congress which dealt with the outlook and status of worldwide geothermal direct use including information on heat pumps and investment, and (3) An article about a redevelopment project in Klamath Falls, Oregon which involves a streetscape for the downtown area with brick crosswalks, antique-style light fixtures, park benches, and geothermally heated sidewalks and crosswalks.

NONE

1995-06-01T23:59:59.000Z

403

Borehole geophysics evaluation of the Raft River geothermal reservoir,  

Open Energy Info (EERE)

reservoir, reservoir, Idaho Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Borehole geophysics evaluation of the Raft River geothermal reservoir, Idaho Details Activities (1) Areas (1) Regions (0) Abstract: GEOTHERMAL ENERGY; GEOTHERMAL FIELDS; GEOPHYSICAL SURVEYS; RAFT RIVER VALLEY; GEOTHERMAL EXPLORATION; BOREHOLES; EVALUATION; HOT-WATER SYSTEMS; IDAHO; MATHEMATICAL MODELS; WELL LOGGING; CAVITIES; EXPLORATION; GEOTHERMAL SYSTEMS; HYDROTHERMAL SYSTEMS; NORTH AMERICA; PACIFIC NORTHWEST REGION; USA Author(s): Applegate, J.K.; Donaldson, P.R.; Hinkley, D.L.; Wallace, T.L. Published: Geophysics, 2/1/1977 Document Number: Unavailable DOI: Unavailable Source: View Original Journal Article Geophysical Method At Raft River Geothermal Area (1977) Raft River Geothermal Area

404

Sustaining the National Geothermal Data System: Considerations for a System Wide Approach and Node Maintenance, Geothermal Resources Council 37th Annual Meeting, Las Vegas, Nevada, September 29-October 2, 2013  

SciTech Connect

Since the 2009 American Recovery and Reinvestment Act the U.S. Department of Energy’s Geothermal Technologies Office has funded $33.7 million for multiple data digitization and aggregation projects focused on making vast amounts of geothermal relevant data available to industry for advancing geothermal exploration. These projects are collectively part of the National Geothermal Data System (NGDS), a distributed, networked system for maintaining, sharing, and accessing data in an effort to lower the levelized cost of electricity (LCOE). Determining “who owns” and “who maintains” the NGDS and its data nodes (repositories in the distributed system) is yet to be determined. However, the invest- ment in building and populating the NGDS has been substantial, both in terms of dollars and time; it is critical that this investment be protected by ensuring sustainability of the data, the software and systems, and the accessibility of the data. Only then, will the benefits be fully realized. To keep this operational system sustainable will require four core elements: continued serving of data and applications; maintenance of system operations; a governance structure; and an effective business model. Each of these presents a number of challenges. Data being added to the NGDS are not strictly geothermal but data considered relevant to geothermal exploration and develop- ment, including vast amounts of oil and gas and groundwater wells, among other data. These are relevant to a broader base of users. By diversifying the client base to other users and other fields, the cost of maintaining core infrastructure can be spread across an array of stakeholders and clients. It is presumed that NGDS will continue to provide free and open access to its data resources. The next-phase NGDS operation should be structured to eventually pursue revenue streams to help off-set sustainability expenses as necessary and appropriate, potentially including income from: grants and contracts (agencies, foundations, pri- vate sector), membership, fees for services (consulting, training, customization, ‘app’ development), repository services (data, services, apps, models, documents, multimedia), advertisements, fees for premier services or applications, subscriptions to value added services, licenses, contributions and donations, endow- ments, and sponsorships.

Allison, Lee [Arizona Geological Survey; Chickering, Cathy [Southern Methodist University; Anderson, Arlene [U. S. Department of Energy, Geothermal Technologies Office; Richard, Stephen M. [Arizona Geological Survey

2013-10-01T23:59:59.000Z

405

Effects of different operating conditions of Gonen geothermal district heating system on its annual performance  

Science Journals Connector (OSTI)

Abstract In this paper, the effects of different operating conditions of the Gonen geothermal district heating system (GDHS) on its annual energy and exergy performance are investigated. The system parameters such as temperature, pressure and flow rate are monitored by using fixed and portable measuring instruments over a one-year period. Thus the main differences in the annual system operation are detected. The measurements show that the Gonen GDHS has six different operating cases depending on the outside temperature throughout the year. The energy and exergy analysis of the system is carried out for each case using the actual system parameters at the corresponding reference temperatures, which are 3.86, 7.1, 8.88, 11.83, 15.26 and 20.4 °C. The highest and lowest energy (57.32%, 35.64%) and exergy (55.76%, 41.42%) efficiencies of the overall system are calculated at the reference temperatures of 15.26 °C and 3.86 °C, respectively. Besides, taking the six case-based energy and exergy analyses into account, the annual average energy and exergy efficiencies are determined to be 45.24% and 47.33%, respectively.

Asiye Aslan; Bedri Yüksel; Tu?rul Akyol

2014-01-01T23:59:59.000Z

406

Thermodynamic and economic evaluations of a geothermal district heating system using advanced exergy-based methods  

Science Journals Connector (OSTI)

Abstract In this paper, a geothermal district heating system (GDHS) is comparatively evaluated in terms of thermodynamic and economic aspects using advanced exergy-based methods to identify the potential for improvement, the interactions among system components, and the direction and potential for energy savings. The actual operational data are taken from the Sarayköy GDHS, Turkey. In the advanced exergetic and exergoeconomic analyses, the exergy destruction and the total operating cost within each component of the system are split into endogenous/exogenous and unavoidable/avoidable parts. The advantages of these analyses over conventional ones are demonstrated. The results indicate that the advanced exergy-based method is a more meaningful and effective tool than the conventional one for system performance evaluation. The exergetic efficiency and the exergoeconomic factor of the overall system for the Sarayköy GDHS were determined to be 43.72% and 5.25% according to the conventional tools and 45.06% and 12.98% according to the advanced tools. The improvement potential and the total cost-savings potential of the overall system were also determined to be 2.98% and 14.05%, respectively. All of the pumps have the highest improvement potential and total cost-savings potential because the pumps were selected to have high power during installation at the Sarayköy GDHS.

Mehmet Tan; Ali Keçeba?

2014-01-01T23:59:59.000Z

407

Geothermal Resources and Technologies | Department of Energy  

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

You are here You are here Home » Geothermal Resources and Technologies Geothermal Resources and Technologies October 7, 2013 - 9:24am Addthis Photo of steam rising high in the air from a geyser. Geothermal energy leverages heated air and water from beneath the earth's surface. This page provides a brief overview of geothermal energy resources and technologies supplemented by specific information to apply geothermal systems within the Federal sector. Overview Geothermal energy is produced from heat and hot water found within the earth. Federal agencies can harness geothermal energy for heating and cooling air and water, as well as for electricity production. Geothermal resources can be drawn through several resources. The resource can be at or near the surface or miles deep. Geothermal systems move heat

408

Geothermal Heat Flow and Existing Geothermal Plants | Department...  

Energy Savers (EERE)

Geothermal Heat Flow and Existing Geothermal Plants Geothermal Heat Flow and Existing Geothermal Plants Geothermal Heat Flow and Existing Plants With plants in development. Click...

409

Effects of Volcanism, Crustal Thickness, and Large Scale Faulting on the Development and Evolution of Geothermal Systems: Collaborative Project in Chile  

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

Effects of Volcanism, Crustal Thickness, and Large Scale Faulting on the Development and Evolution of Geothermal Systems: Collaborative Project in Chile presentation at the April 2013 peer review meeting held in Denver, Colorado.

410

Flint Geothermal Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Flint Geothermal Geothermal Area Flint Geothermal Geothermal Area (Redirected from Flint Geothermal Area) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Flint Geothermal Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (0) 9 Exploration Activities (9) 10 References Area Overview Geothermal Area Profile Location: Colorado Exploration Region: Rio Grande Rift GEA Development Phase: 2008 USGS Resource Estimate Mean Reservoir Temp: Estimated Reservoir Volume: Mean Capacity: Click "Edit With Form" above to add content History and Infrastructure Operating Power Plants: 0 No geothermal plants listed.

411

An economic comparison and evaluation of two geothermal district heating systems for advanced exergoeconomic analysis  

Science Journals Connector (OSTI)

Abstract This paper refers to an economic comparison and evaluation of two geothermal district heating systems (GDHSs) under same reference state condition and mechanic/economic parameters by using an advanced exergoeconomic analysis. In this analysis, costs of investment and exergy destruction of each component for the thermal systems such as the Afyon and Sarayköy \\{GDHSs\\} were split into endogenous/exogenous and unavoidable/avoidable parts, and were also compared with each other for the first time. The results obtained show that the advanced exergoeconomic analysis makes the information more accurate and useful, and supplies additional information that cannot be provided by the conversional analysis. Furthermore, the Afyon GDHS can be made more cost effectiveness, removing the system components’ irreversibilities, technical-economic limitations, and poorly chosen manufacturing methods, according to the Sarayköy GDHS. The majority of the components in the Sarayköy GDHS are to operate more economically than those in the Afyon GDHS. As a result, the usefulness of this method was clearly demonstrated comparing both the systems.

P?nar Keçeba?; Harun Gökgedik; Mehmet Ali Alkan; Ali Keçeba?

2014-01-01T23:59:59.000Z

412

Economic analysis of exergy efficiency based control strategy for geothermal district heating system  

Science Journals Connector (OSTI)

Abstract In this study, the exergy efficiency based control strategy (ExEBCS) for exergy efficiency maximization in geothermal district heating systems (GDHSs) is economically evaluated. As a real case study, the Afyon GDHS in the city of Afyonkarahisar/Turkey is considered. Its actual thermal data as of average weekly data are collected in heating seasons during the period 2006–2010 for artificial neural network (ANN) modeling. The ANN modeling of the Afyon GDHS is used as a test system to demonstrate the effectiveness and economic impact of the ExEBCS under various operating conditions. Then, the ExEBCS is evaluated economically in case of application to real Afyon GDHS of the ExEBCS. The results show that the initial cost for the ExEBCS is more expensive than that for the old one by 6.33 kUS$/year as a result of replacing automatic controller. The saving in heat production makes the ExEBCS profitable by up to 7% of annual energy saving as a result of the increase in the heat production by 88% when the control system is operated. This results in a short payback period of 3.8 years. This study confirms that the use of ExEBCS in district heating systems (especially GDHS) is quite suitable.

Ali Keçeba?; ?smail Yabanova

2013-01-01T23:59:59.000Z

413

Exergoeconomic analysis of a district heating system for geothermal energy using specific exergy cost method  

Science Journals Connector (OSTI)

Abstract This study presents the exergoeconomic analysis and evaluation in order to provide cost based information and suggests possible locations/components in a GDHS (geothermal district heating system) for improving the cost effectiveness. The analysis is based on the SPECO (specific exergy costing) method, and used to calculate exergy-related parameters and display cost flows for all streams and components. As a real case study, the Afyon GDHS in Turkey is considered based on actual operational data. The obtained results show that the unit exergy cost of heat produced by the Afyon GDHS is calculated as average 5624 $/h. The HEX (heat exchanger)-III among all components should be improved quickly due to the high total operating cost rate and relative cost difference. The HEX-I and PM (pump)-V have the highest exergoeconomic factors among all other system components due to the high owning and operating costs of these components. The heat production costs per exergy unit for all the \\{HEXs\\} decrease due to the high exergy destruction cost rate of the system, while the well head temperature and ambient temperature increase. The SPECO method may be used to improve the cost effectiveness according to exergy rates in \\{GDHSs\\} as a thermal system.

Mehmet Ali Alkan; Ali Keçeba?; Nurettin Yamankaradeniz

2013-01-01T23:59:59.000Z

414

Stanford Geothermal Workshop- Geothermal Technologies Office  

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

Presentation by Geothermal Technologies Director Doug Hollett at the Stanford Geothermal Workshop on February 11-13, 2013.

415

Geothermal Energy Technology: a current-awareness bulletin  

SciTech Connect

This bulletin announces on a semimonthly basis the current worldwide information available on the technology required for economic recovery of geothermal energy and its use either directly or for production of electric power. The subject content encompasses: resource status and assessment, geology and hydrology of geothermal systems, geothermal exploration, legal and institutional aspects, economic and final aspects, environmental aspects and waste disposal, by-products, geothermal power plants, geothermal engineering, direct energy utilization, and geothermal data and theory.

Smith, L.B. (ed.)

1983-01-15T23:59:59.000Z

416

Evaluation of Oil-Industry Stimulation Practices for Engineered Geothermal Systems  

SciTech Connect

Geothermal energy extraction is typically achieved by use of long open-hole intervals in an attempt to connect the well with the greatest possible rock mass. This presents a problem for the development of Enhanced (Engineered) Geothermal Systems (EGS), owing to the challenge of obtaining uniform stimulation throughout the open-hole interval. Fluids are often injected in only a fraction of that interval, reducing heat transfer efficiency and increasing energy cost. Pinnacle Technologies, Inc. and GeothermEx, Inc. evaluated a variety of techniques and methods that are commonly used for hydraulic fracturing of oil and gas wells to increase and evaluate stimulation effectiveness in EGS wells. Headed by Leen Weijers, formerly Manager of Technical Development at Pinnacle Technologies, Inc., the project ran from August 1, 2004 to July 31, 2006 in two one-year periods to address the following tasks and milestones: 1) Analyze stimulation results from the closest oil-field equivalents for EGS applications in the United States (e.g., the Barnett Shale in North Texas) (section 3 on page 8). Pinnacle Technologies, Inc. has collected fracture growth data from thousands of stimulations (section 3.1 on page 12). This data was further evaluated in the context of: a) Identifying techniques best suited to developing a stimulated EGS fracture network (section 3.2 on page 29), and b) quantifying the growth of the network under various conditions to develop a calibrated model for fracture network growth (section 3.3 on page 30). The developed model can be used to design optimized EGS fracture networks that maximize contact with the heat source and minimize short-circuiting (section 3.4 on page 38). 2) Evaluate methods used in oil field applications to improve fluid diversion and penetration and determine their applicability to EGS (section 4 on page 50). These methods include, but are not limited to: a) Stimulation strategies (propped fracturing versus water fracturing versus injecting fluid below fracturing gradients) (section 4.1 on page 50); b) zonal isolation methods (by use of perforated casing or packers) (section 4.2 on page 57); c) fracture re-orientation and fracture network growth techniques (e.g., by use of alternating high- and low-rate injections) (section 4.4 on page 74); and d) fluid diversion methods (by use of the SurgiFrac technique, the StimGun perforation technique, or stress shadowing). This project task is to be completed in the first project year, enabling the most promising techniques to be field tested and evaluated in the second project year. 3) Study the applicability of the methods listed above by utilizing several techniques (section 5 on page 75) including, but not limited to: a) Hydraulic Impedance Testing (HIT) to determine the location of open hydraulic fractures along a open-hole interval; b) pressure transient testing to determine reservoir permeability, pore pressure, and closure stress; and c) treatment well tilt mapping or microseismic mapping to evaluate fracture coverage. These techniques were reviewed for their potential application for EGS in the first project year (section 5.1 on page 75). This study also includes further analysis of any field testing that will be conducted in the Desert Peak area in Nevada for ORMAT Nevada, Inc. (section 5.2 on page 86), with the aim to close the loop to provide reliable calibrated fracture model results. Developed through its hydraulic fracture consulting business, techniques of Pinnacle Technologies, Inc. for stimulating and analyzing fracture growth have helped the oil and gas industry to improve hydraulic fracturing from both a technical and economic perspective. In addition to more than 30 years of experience in the development of geothermal energy for commercial power generation throughout the world, GeothermEx, Inc. brings to the project: 1) Detailed information about specific developed and potential EGS reservoirs, 2) experience with geothermal well design, completion, and testing practices, and 3) a direct connection to the Desert Peak EGS project.

Peter Van Dyke; Leen Weijers; Ann Robertson-Tait; Norm Warpinski; Mike Mayerhofer; Bill Minner; Craig Cipolla

2007-10-17T23:59:59.000Z

417

Geothermal News | Department of Energy  

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

News News Geothermal News RSS April 12, 2013 Nevada Deploys First U.S. Commercial, Grid-Connected Enhanced Geothermal System As part of the Obama Administration's all-of-the-above energy strategy, the Energy Department recognized the nation's first commercial enhanced geothermal system (EGS) project to supply electricity to the grid. September 8, 2011 Department of Energy Awards up to $38 Million to Advance Technology and Reduce Cost of Geothermal Energy Washington, D.C. - U.S. Energy Secretary Steven Chu today announced $38 million over three years for projects to accelerate the development of promising geothermal energy technologies and help diversify America's sources of clean, renewable energy. Thirty-two innovative projects in 14 states will develop and test new ways to locate geothermal resources and

418

Energetic and exergetic performance investigation of the Bigadic Geothermal District Heating System in Turkey  

Science Journals Connector (OSTI)

In this study a comprehensive performance analysis of the Bigadic Geothermal District Heating System (GDHS) in Balikesir, Turkey is performed through thermodynamic assessment in terms of energy and exergy efficiencies. The actual thermal data taken from the Technical Department of the GDHS are utilized in the analysis to determine the exergy destructions in each component of the system and the overall energy and exergy efficiencies of the system for two reference temperatures taken as 15.6 °C for November (e.g., case 1) and 11 °C for December (e.g., case 2). The energy and exergy flow diagrams are clearly drawn to illustrate how much destructions/losses take place in addition to the inputs and outputs. The average energy and exergy efficiencies are found to be 30% and 36% for case 1, and 40% and 49% for case 2, respectively. The key reason as to why the exergy efficiencies are higher is because the heat recovery option is used through the reinjection processes which make use of waste heat. A parametric study is also conducted to show how energy and exergy flows change with the environment temperature. The results are expected to be helpful to researchers and engineers in the area.

Z. Oktay; C. Coskun; I. Dincer

2008-01-01T23:59:59.000Z

419

Geothermal Basics  

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

Geothermal energy is thermal energy generated and stored in the Earth. Geothermal energy can manifest on the surface of the Earth, or near the surface of the Earth, where humankind may harness it to serve our energy needs. Geothermal resources are reservoirs of hot water that exist at varying temperatures and depths below the Earth's surface. Wells can be drilled into these underground reservoirs to tap steam and very hot water that can be brought to the surface for a variety of uses.

420

NREL: Geothermal Policymakers' Guidebooks - Policymakers' Guidebook for  

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

Electricity Generation Electricity Generation The Policymakers' Guidebook for Electricity Generation outlines five steps for implementing geothermal policy and provides links to helpful resources. Developing policy that reduces barriers and results in market deployment will lead to greater implementation of geothermal electricity generation. Geothermal technologies that can be used for electricity generation include co-production, conventional hydrothermal, enhanced geothermal systems, and low temperature geothermal resources. Learn more about geothermal energy at NREL's renewable energy Web site. Increased Development Step 5 Implement Policies Step 4 Consider Policy Options Step 3 Evaluate Current Policy Step 2 Identify Challenges to Local Development Step 1 Assess the Local Industry and Resource Potential

Note: This page contains sample records for the topic "geothermal system cxs" 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

Geothermal Blog  

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

blog Office of Energy Efficiency & blog Office of Energy Efficiency & Renewable Energy Forrestal Building 1000 Independence Avenue, SW Washington, DC 20585 en Geothermal Energy: A Glance Back and a Leap Forward http://energy.gov/eere/articles/geothermal-energy-glance-back-and-leap-forward geothermal-energy-glance-back-and-leap-forward" class="title-link"> Geothermal Energy: A Glance Back and a Leap Forward

422

Geothermal Energy  

Science Journals Connector (OSTI)

Geothermal energy has been confirmed as being potentially a ... significant contributor to the Community’s supply of energy from indigenous resources. However, its expected... 1. ...

J. T. McMullan; A. S. Strub

1981-01-01T23:59:59.000Z

423

RMOTC - Testing - Geothermal  

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

Geothermal Testing Geothermal Testing Notice: As of July 15th 2013, the Department of Energy announced the intent to sell Naval Petroleum Reserve Number 3 (NPR3). The sale of NPR-3 will also include the sale of all equipment and materials onsite. A decision has been made by the Department of Energy to complete testing at RMOTC by July 1st, 2014. RMOTC will complete testing in the coming year with the currently scheduled testing partners. For more information on the sale of NPR-3 and sale of RMOTC equipment and materials please join our mailing list here. With the existing geologic structure at RMOTC, promising potential exists for Enhanced Geothermal System (EGS) testing. The field also has two reliable water resources for supporting low-temperature geothermal testing.

424

OM-300 - MWD Geothermal Navigation Instrument Geothermal Project | Open  

Open Energy Info (EERE)

OM-300 - MWD Geothermal Navigation Instrument Geothermal Project OM-300 - MWD Geothermal Navigation Instrument Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title OM-300 - MWD Geothermal Navigation Instrument Project Type / Topic 1 Recovery Act: Enhanced Geothermal Systems Component Research and Development/Analysis Project Type / Topic 2 High-Temperature Downhole MWD Tools for Directional Drilling Project Description Honeywell proposes to perform this project in three phases; Phase 1 will enhance accelerometers, magnetometers and high temperature electronic components to operate at 300C. Phase 2 will define, design and demonstrate circuit card assembly (CCA) and external packaging capable of operating in the temperature, shock, and vibration of downhole MWD tools. Phase 3 will utilize the components onto a CCA, integrate the CCA sensors into a final package for final assembly, test, and the delivery of one Prototype.

425

Enhanced geothermal systems (EGS) with CO2 as heat transmission fluid--A scheme for combining recovery of renewable energy with geologic storage of CO2  

E-Print Network (OSTI)

for Competitive Geothermal Power Generation, Energy & Fuels,of Power Generation Prospects from Enhanced Geothermal

Pruess, K.

2010-01-01T23:59:59.000Z

426

An integrated model to compare net electricity generation for CO?- and water-based geothermal systems.  

E-Print Network (OSTI)

??Utilization of supercritical CO2 as a geothermal fluid instead of water has been proposed byBrown in 2000 and its advantages have been discussed by him… (more)

Agarwal, Vikas, 1986-

2010-01-01T23:59:59.000Z

427

A REVIEW OF THE REHAI (HOT SEA) GEOTHERMAL SYSTEM IN TENGCHONG COUNTY, YUNNAN PROVINCE, CHINA  

E-Print Network (OSTI)

of Xu in 1639. It was used for hot baths and had some small ad- ditional use for sulfurite mining since to some drillholes for exploration of gold and/or uranium found the high geothermal gradient of about 100

Ahmad, Sajjad

428

Ball State Completes Largest U.S. Ground-Source Geothermal System...  

Office of Environmental Management (EM)

comprising 5.5 million square feet on the 660-acre campus. To provide heating, geothermal heat pumps use a fluid to transfer heat from the Earth to buildings. For cooling, the...

429

Evaluation of Engineered Geothermal Systems as a Heat Source for Oil Sands Production in Northern Alberta  

Science Journals Connector (OSTI)

The project costs presented in the following section are intended ... give a basic understanding of the economics of geothermal heat as an energy source for oil sands extraction. Long et...2005) reported that oil...

V. Pathak; T. Babadagli; J. A. Majorowicz; M. J. Unsworth

2014-06-01T23:59:59.000Z

430

Pairing Integrated Gasification and Enhanced Geothermal Systems (EGS) in Semiarid Environments  

Science Journals Connector (OSTI)

The New Mexico Rio Grande Rift Basin has been the subject of much geothermal exploration with the data organized into many different formats(7-10)with many other reports on spring temperatures, spring chemistry, geothermal municipal wells, and geothermal oil and gas wells. ... The site selected for this project is near Transocean Isleta-1 well and is selected due to satisfactory depth to Precambrian basement rocks (?3.2 km), a high geothermal gradient (39 °C/km) and resulting high bottom-hole temperature (131 °C), and large thickness of the Precambrian basement rock that could be penetrated to create a reservoir (?1.8 km). ... Where fracture spacing is large the parallel fracture model (PFM) provides better estimates of thermal output and of thermal drawdown although the boundary of the reservoir is assumed thermally isolated and no supplemental heat supply is possible. ...

Divya Chandra; Caleb Conrad; Derek Hall; Nicholas Montebello; Andrew Weiner; Sarma Pisupati; Uday Turaga; Ghazal Izadi; Arun Ram Mohan; Derek Elsworth

2012-10-29T23:59:59.000Z

431

An Archaean sub-seafloor geothermal system, ‘calc-alkali' trends, and massive sulphide genesis  

Science Journals Connector (OSTI)

... only weakly hydrated during halmyrolysis and burial metamorphism, but, in some areas, sub-seafloor geothermal activity contemporaneous with volcanism produced more intense rock-water interaction with higher water-to-rock ... alkaline' traits reflect a hydrothermal overprint caused by rock-water interaction during sub-sea floor geothermal activity as a modified seawater brine intensely spili-tized, silicified and leached metals from ...

P. J. MacGeehan; W. H. MacLean

1980-08-21T23:59:59.000Z

432

Effect of reference state on the exergoeconomic evaluation of geothermal district heating systems  

Science Journals Connector (OSTI)

Abstract The exergy cost structure of the geothermal district heating system (GDHS) is investigated by using an exergoeconomic method called as the modified productive structure analysis (MOPSA). A parametric study is also conducted to show how exergy cost flow rates change with the reference state (ambient temperature). As a comprehensive case study, the Afyon GDHS in Afyonkarahisar, Turkey is considered. The actual thermal data taken from the technical staffs as 2.3 °C for January (case 1) and 10.2 °C for February (case 2), 2010 in 100% load condition are collected for this study. Mechanical and thermal exergy flow rates, entropy production rates and exergy cost flow rates for each component in the Afyon GDHS are calculated using these two actual data sets. The results show that the exergy efficiencies of the overall system for these two cases are found to be 25.34% and 22.78%, respectively. And, the largest exergy cost loss occurs in the heat exchangers with 52.49% and 64.91% for cases 1 and 2, respectively. The unit exergy costs are found as cP>cT>cS>cQ for the actual data sets in each case. In addition, ambient temperature has a big impact on the exergies and costs of GDHSs.

Ali Keçeba?

2013-01-01T23:59:59.000Z

433

THE DEFINITION OF ENGINEERING DEVELOPMENT AND RESEARCH PROBLEMS RELATING TO THE USE OF GEOTHERMAL FLUIDS FOR ELECTRIC POWER GENERATION AND NONELECTRIC HEATING  

E-Print Network (OSTI)

public acceptance of geothermal energy and, for that matter,Geosciences relating to geothermal energy a. ThermodynamicsI 2omputer modeling of geothermal energy extraction systems

Apps, J.A.

2011-01-01T23:59:59.000Z

434

NREL: Learning - Geothermal Direct Use  

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

Direct Use Direct Use Photo of alligators on a farm. Geothermally heated waters allow alligators to thrive on a farm in Colorado, where temperatures can drop below freezing. Geothermal reservoirs of hot water, which are found a few miles or more beneath the Earth's surface, can be used to provide heat directly. This is called the direct use of geothermal energy. Geothermal direct use has a long history, going back to when people began using hot springs for bathing, cooking food, and loosening feathers and skin from game. Today, hot springs are still used as spas. But there are now more sophisticated ways of using this geothermal resource. In modern direct-use systems, a well is drilled into a geothermal reservoir to provide a steady stream of hot water. The water is brought up through

435

Baseline System Costs for 50.0 MW Enhanced Geothermal System--A Function of: Working Fluid, Technology, and Location, Location, Location  

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

Project objectives: Develop a baseline cost model of a 50.0 MW Enhanced Geothermal System, including all aspects of the project, from finding the resource through to operation, for a particularly challenging scenario: the deep, radioactively decaying granitic rock of the Pioneer Valley in Western Massachusetts.

436

Geothermal Technologies Office: Geothermal Projects  

Energy Savers (EERE)

Skip to Content U.S. Department of Energy Energy Efficiency and Renewable Energy EERE Home | Programs & Offices | Consumer Information Geothermal Technologies Office Search Search...

437

Geothermal Energy  

SciTech Connect

Geothermal Energy (GET) announces on a bimonthly basis the current worldwide information available on the technologies required for economic recovery of geothermal energy and its use as direct heat or for electric power production. This publication contains the abstracts of DOE reports, journal articles, conference papers, patents, theses, and monographs added to the Energy Science and Technology Database during the past two months.

Steele, B.C.; Pichiarella, L.S. [eds.; Kane, L.S.; Henline, D.M.

1995-01-01T23:59:59.000Z

438

Property:Geothermal/Partner1Website | Open Energy Information  

Open Energy Info (EERE)

Website Website Jump to: navigation, search Property Name Geothermal/Partner1Website Property Type URL Description Partner 1 Website (URL) Pages using the property "Geothermal/Partner1Website" Showing 25 pages using this property. (previous 25) (next 25) A Alum Innovative Exploration Project Geothermal Project + http://www.spectir.com/ + Analysis of Energy, Environmental and Life Cycle Cost Reduction Potential of Ground Source Heat Pump (GSHP) in Hot and Humid Climate Geothermal Project + http://www.fpl.com/ + Application of 2D VSP Imaging Technology to the Targeting of Exploration and Production Wells in a Basin and Range Geothermal System Humboldt House-Rye Patch Geothermal Area Geothermal Project + http://www.apexhipoint.com/ + Application of a New Structural Model and Exploration Technologies to Define a Blind Geothermal System: A Viable Alternative to Grid-Drilling for Geothermal Exploration: McCoy, Churchill County, NV Geothermal Project + http://www.unr.edu/Geothermal/ +

439

Property:Geothermal/Awardees | Open Energy Information  

Open Energy Info (EERE)

Awardees Awardees Jump to: navigation, search Property Name Geothermal/Awardees Property Type String Description Awardees (Company / Institution) Pages using the property "Geothermal/Awardees" Showing 25 pages using this property. (previous 25) (next 25) A A 3D-3C Reflection Seismic Survey and Data Integration to Identify the Seismic Response of Fractures and Permeable Zones Over a Known Geothermal Resource at Soda Lake, Churchill Co., NV Geothermal Project + Magma Energy + A Demonstration System for Capturing Geothermal Energy from Mine Waters beneath Butte, MT Geothermal Project + Montana Tech of The University of Montana + A Geothermal District-Heating System and Alternative Energy Research Park on the NM Tech Campus Geothermal Project + New Mexico Institute of Mining and Technology +

440

Geothermal Case Studies  

SciTech Connect

The US Geological Survey (USGS) resource assessment (Williams et al., 2009) outlined a mean 30GWe of undiscovered hydrothermal resource in the western US. One goal of the Geothermal Technologies Office (GTO) is to accelerate the development of this undiscovered resource. The Geothermal Technologies Program (GTP) Blue Ribbon Panel (GTO, 2011) recommended that DOE focus efforts on helping industry identify hidden geothermal resources to increase geothermal capacity in the near term. Increased exploration activity will produce more prospects, more discoveries, and more readily developable resources. Detailed exploration case studies akin to those found in oil and gas (e.g. Beaumont, et al, 1990) will give operators a single point of information to gather clean, unbiased information on which to build geothermal drilling prospects. To support this effort, the National Renewable Energy laboratory (NREL) has been working with the Department of Energy (DOE) to develop a template for geothermal case studies on the Geothermal Gateway on OpenEI. In fiscal year 2013, the template was developed and tested with two case studies: Raft River Geothermal Area (http://en.openei.org/wiki/Raft_River_Geothermal_Area) and Coso Geothermal Area (http://en.openei.org/wiki/Coso_Geothermal_Area). In fiscal year 2014, ten additional case studies were completed, and additional features were added to the template to allow for more data and the direct citations of data. The template allows for: Data - a variety of data can be collected for each area, including power production information, well field information, geologic information, reservoir information, and geochemistry information. Narratives ? general (e.g. area overview, history and infrastructure), technical (e.g. exploration history, well field description, R&D activities) and geologic narratives (e.g. area geology, hydrothermal system, heat source, geochemistry.) Exploration Activity Catalog - catalog of exploration activities conducted in the area (with dates and references.) NEPA Analysis ? a query of NEPA analyses conducted in the area (that have been catalogued in the OpenEI NEPA database.) In fiscal year 2015, NREL is working with universities to populate additional case studies on OpenEI. The goal is to provide a large enough dataset to start conducting analyses of exploration programs to identify correlations between successful exploration plans for areas with similar geologic occurrence models.

Young, Katherine

2014-09-30T23:59:59.000Z

Note: This page contains sample records for the topic "geothermal system cxs" 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

Geothermal: News  

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

News News Geothermal Technologies Legacy Collection Help/FAQ | Site Map | Contact Us | Admin Log On Home/Basic Search About Publications Advanced Search New Hot Docs News Related Links News DOE Geothermal Technologies Program News Geothermal Technologies Legacy Collection September 30, 2008 Update: "Hot Docs" added to the Geothermal Technologies Legacy Collection. A recent enhancement to the geothermal legacy site is the addition of "Hot Docs". These are documents that have been repeatedly searched for and downloaded more than any other documents in the database during the previous month and each preceding month. "Hot Docs" are highlighted for researchers and stakeholders who may find it valuable to learn what others in their field are most interested in. This enhancement could serve, for

442

Geopressured geothermal bibliography (Geopressure Thesaurus)  

SciTech Connect

This thesaurus of terminology associated with the geopressured geothermal energy field has been developed as a part of the Geopressured Geothermal Information System data base. A thesaurus is a compilation of terms displaying synonymous, hierarchical, and other relationships between terms. These terms, which are called descriptors, constitute the special language of the information retrieval system, the system vocabulary. The Thesaurus' role in the Geopressured Geothermal Information System is to provide a controlled vocabulary of sufficient specificity for subject indexing and retrieval of documents in the geopressured geothermal energy field. The thesauri most closely related to the Geopressure Thesaurus in coverage are the DOE Energy Information Data Base Subject Thesaurus and the Geothermal Thesaurus being developed at the Lawrence Berkeley Laboratory (LBL). The Geopressure Thesaurus differs from these thesauri in two respects: (1) specificity of the vocabulary or subject scope and (2) display format.

Hill, T.R.; Sepehrnoori, K.

1981-08-01T23:59:59.000Z

443

The Geothermal Technologies Office  

Energy Savers (EERE)

Geothermal Technologies Office (GTO) funded and launched the NGDS and the DOE Geothermal Data Repository node to facilitate a seamless delivery of geotherm- al data for a variety...

444

Sandia National Laboratories: Geothermal  

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

Geothermal Geothermal Energy & Drilling Technology On November 10, 2010, in Geothermal energy is an abundant energy resource that comes from tapping the natural heat of molten rock...

445

THERMO-HYDRO-MECHANICAL SIMULATION OF GEOTHERMAL  

E-Print Network (OSTI)

THERMO-HYDRO-MECHANICAL SIMULATION OF GEOTHERMAL RESERVOIR STIMULATIONRESERVOIR STIMULATION Silvia Seminario del Grupo de Hidrologìa Subterrànea - UPC, Barcelona #12;INTRODUCTION Enhanced geothermal systems Geothermal gradient ~ 33 °C/Km Hydraulic stimulation enhances fracture permeability (energy

Politècnica de Catalunya, Universitat

446

GETEM-Geothermal Electricity Technology Evaluation Model  

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

A guide to providing input to GETEM, the Geothermal Electricity Technology Evaluation Model. GETEM is designed to help the Geothermal Technologies Program of the U.S. Department of Energy in estimating some of the technical and economic values of its research projects and subprograms. The tool is intended to estimate and summarize the performance and cost of various geothermal electric power systems at geothermal reservoirs with a wide variety of physical characteristics.

447

State-of-the-art of liquid waste disposal for geothermal energy systems: 1979. Report PNL-2404  

SciTech Connect

The state-of-the-art of geothermal liquid waste disposal is reviewed and surface and subsurface disposal methods are evaluated with respect to technical, economic, legal, and environmental factors. Three disposal techniques are currently in use at numerous geothermal sites around the world: direct discharge into surface waters; deep-well injection; and ponding for evaporation. The review shows that effluents are directly discharged into surface waters at Wairakei, New Zealand; Larderello, Italy; and Ahuachapan, El Salvador. Ponding for evaporation is employed at Cerro Prieto, Mexico. Deep-well injection is being practiced at Larderello; Ahuachapan; Otake and Hatchobaru, Japan; and at The Geysers in California. All sites except Ahuachapan (which is injecting only 30% of total plant flow) have reported difficulties with their systems. Disposal techniques used in related industries are also reviewed. The oil industry's efforts at disposal of large quantities of liquid effluents have been quite successful as long as the effluents have been treated prior to injection. This study has determined that seven liquid disposal methods - four surface and three subsurface - are viable options for use in the geothermal energy industry. However, additional research and development is needed to reduce the uncertainties and to minimize the adverse environmental impacts of disposal. (MHR)

Defferding, L.J.

1980-06-01T23:59:59.000Z

448

Energy 101: Geothermal Heat Pumps  

SciTech Connect

An energy-efficient heating and cooling alternative, the geothermal heat pump system moves heat from the ground to a building (or from a building to the ground) through a series of flexible pipe "loops" containing water. This edition of Energy 101 explores the benefits Geothermal and the science behind how it all comes together.

None

2011-01-01T23:59:59.000Z

449

Geothermal electric power plant status  

SciTech Connect

A status summary of the activity for the 44 proposed geothermal electric power plants in the United States as of March 31, 1981 is presented, as well as the power on-line electric plants to date. The information comes from the Department of Energy Geothermal Progress Monitor System (DOE, 1981).

Murphy, M.; Entingh, D.J.

1981-10-01T23:59:59.000Z

450

Energy 101: Geothermal Heat Pumps  

ScienceCinema (OSTI)

An energy-efficient heating and cooling alternative, the geothermal heat pump system moves heat from the ground to a building (or from a building to the ground) through a series of flexible pipe "loops" containing water. This edition of Energy 101 explores the benefits Geothermal and the science behind how it all comes together.

None

2013-05-29T23:59:59.000Z

451

Property:Geothermal/AboutArea | Open Energy Information  

Open Energy Info (EERE)

AboutArea AboutArea Jump to: navigation, search Property Name Geothermal/AboutArea Property Type Text Description About the Area Pages using the property "Geothermal/AboutArea" Showing 18 pages using this property. A A 3D-3C Reflection Seismic Survey and Data Integration to Identify the Seismic Response of Fractures and Permeable Zones Over a Known Geothermal Resource at Soda Lake, Churchill Co., NV Geothermal Project + Churchill County, NV Alum Innovative Exploration Project Geothermal Project + Alum geothermal project is located in Nevada ~150 miles SE of Reno. It consists of federal geothermal leases that are 100% owned by SGP. Application of 2D VSP Imaging Technology to the Targeting of Exploration and Production Wells in a Basin and Range Geothermal System Humboldt House-Rye Patch Geothermal Area Geothermal Project + Humboldt House-Rye Patch (HH-RP) geothermal resource area

452

Geothermal/Power Plant | Open Energy Information  

Open Energy Info (EERE)

Geothermal/Power Plant Geothermal/Power Plant < Geothermal(Redirected from Power Plant) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Land Use Leasing Exploration Well Field Power Plant Transmission Environment Water Use Print PDF Geothermal Power Plants General List of Plants Map of Plants Regulatory Roadmap NEPA (19) Binary power system equipment and cooling towers at the ORMAT Ormesa Geothermal Power Complex in Southern California. Geothermal Power Plants discussion Electricity Generation Converting the energy from a geothermal resource into electricity is achieved by producing steam from the heat underground to spin a turbine which is connected to a generator to produce electricity. The type of energy conversion technology that is used depends on whether the resource is predominantly water or steam, the temperature of the resource, and the

453

Geology of Injection Well 46A-19RD in the Coso Enhanced Geothermal...  

Open Energy Info (EERE)

Enhanced Geothermal Systems Experiment Abstract The Coso Geothermal Field is a large, high temperature system located in California on the western edge of the Basin and Range...

454

DEVELOPING THE NATIONAL GEOTHERMAL DATA SYSTEM ADOPTION OF CKAN FOR DOMESTIC & INTERNATIONAL DATA DEPLOYMENT  

SciTech Connect

The National Geothermal Data System (NGDS) De- sign and Testing Team is developing NGDS software currently referred to as the “NGDS Node-In-A-Box”. The software targets organizations or individuals who wish to host at least one of the following: • an online repository containing resources for the NGDS; • an online site for creating metadata to register re- sources with the NGDS • NDGS-conformant Web APIs that enable access to NGDS data (e.g., WMS, WFS, WCS); • NDGS-conformant Web APIs that support dis- covery of NGDS resources via catalog service (e.g. CSW) • a web site that supports discovery and under- standing of NGDS resources A number of different frameworks for development of this online application were reviewed. The NGDS Design and Testing Team determined to use CKAN (http://ckan.org/), because it provides the closest match between out of the box functionality and NGDS node-in-a-box requirements. To achieve the NGDS vision and goals, this software development project has been inititated to provide NGDS data consumers with a highly functional inter- face to access the system, and to ease the burden on data providers who wish to publish data in the sys- tem. It is important to note that this software package constitutes a reference implementation. The NGDS software is based on open standards, which means other server software can make resources available, and other client applications can utilize NGDS data. A number of international organizations have ex- pressed interest in the NGDS approach to data access. The CKAN node implementation can provide a sim- ple path for deploying this technology in other set- tings.

Clark, Ryan J. [Arizona Geological Survey; Kuhmuench, Christoph [Siemens Corporation; Richard, Stephen M. [Arizona Geological Survey

2013-01-01T23:59:59.000Z

455

Determination of optimum pipe diameter along with energetic and exergetic evaluation of geothermal district heating systems: Modeling and application  

Science Journals Connector (OSTI)

This study deals with determination of optimum pipe diameters based on economic analysis and the performance analysis of geothermal district heating systems along with pipelines using energy and exergy analysis methods. In this regard, the Dikili geothermal district heating system (DGDHS) in Izmir, Turkey is taken as an application place, to which the methods presented here are applied with some assumptions. The system mainly consists of three cycles, namely (i) the transportation network, (ii) the Danistay region, and (iii) the Bariskent region. The thermal capacities of these regions are 21,025 and 7975 kW, respectively, while the supply (flow) and return temperature values of those are 80 and 50 °C, respectively. Based upon the assessment of the transportation network using the optimum diameter analysis method, minimum cost is calculated to be US$ 561856.906 year?1 for a nominal diameter of DN 300. The exergy destructions in the overall DGDHS are quantified and illustrated using exergy flow diagram. Furthermore, both energy and exergy flow diagrams are exhibited for comparison purposes. It is observed through analysis that the exergy destructions in the system particularly take place due to the exergy of the thermal water (geothermal fluid) reinjected, the heat exchanger losses, and all pumps losses, accounting for 38.77%, 10.34%, 0.76% of the total exergy input to the DGDHS. Exergy losses are also found to be 201.12817 kW and 1.94% of the total exergy input to the DGDHS for the distribution network. For the system performance analysis and improvement, both energy and exergy efficiencies of the overall DGDHS are investigated, while they are determined to be 40.21% and 50.12%, respectively.

Yildiz Kalinci; Arif Hepbasli; Ismail Tavman

2008-01-01T23:59:59.000Z

456

California Geothermal Energy Collaborative  

E-Print Network (OSTI)

California Geothermal Energy Collaborative Geothermal Education and Outreach Guide of California Davis, and the California Geothermal Energy Collaborative. We specifically would like to thank support of the California Geothermal Energy Collaborative. We also thank Charlene Wardlow of Ormat for her

457

User manual for GEOCITY: a computer model for cost analysis of geothermal district-heating-and-cooling systems. Volume I. Main text  

SciTech Connect

The purpose of this model is to calculate the costs of residential space heating, space cooling, and sanitary water heating or process heating (cooling) using geothermal energy from a hydrothermal reservoir. The model can calculate geothermal heating and cooling costs for residential developments, a multi-district city, or a point demand such as an industrial factory or commercial building. GEOCITY simulates the complete geothermal heating and cooling system, which consists of two principal parts: the reservoir and fluid transmission system and the distribution system. The reservoir and fluid transmission submodel calculates the life-cycle cost of thermal energy supplied to the distribution system by simulating the technical design and cash flows for the exploration, development, and operation of the reservoir and fluid transmission system. The distribution system submodel calculates the life-cycle cost of heat (chill) delivered by the distribution system to the end-users by simulating the technical design and cash flows for the construction and operation of the distribution system. Geothermal space heating is assumed to be provided by circulating hot water through radiators, convectors, fan-coil units, or other in-house heating systems. Geothermal process heating is provided by directly using the hot water or by circulating it through a process heat exchanger. Geothermal space or process cooling is simulated by circulating hot water through lithium bromide/water absorption chillers located at each building. Retrofit costs for both heating and cooling applications can be input by the user. The life-cycle cost of thermal energy from the reservoir and fluid transmission system to the distribution system and the life-cycle cost of heat (chill) to the end-users are calculated using discounted cash flow analysis.

Huber, H.D.; Fassbender, L.L.; Bloomster, C.H.

1982-09-01T23:59:59.000Z

458

A Phase-Partitioning Model for CO2–Brine Mixtures at Elevated Temperatures and Pressures: Application to CO2-Enhanced Geothermal Systems  

E-Print Network (OSTI)

D.W. : A hot dry rock geothermal energy concept utilizinga renewed interest in geothermal energy, and particularly inThe Future of Geothermal Energy. (Massachusetts Institute of

Spycher, Nicolas; Pruess, Karsten

2010-01-01T23:59:59.000Z

459

Enhanced geothermal systems (EGS) using CO2 as working fluid - A novelapproach for generating renewable energy with simultaneous sequestration of carbon  

E-Print Network (OSTI)

Brown, D. A Hot Dry Rock Geothermal Energy Concept Utilizingand Renewable Energy, Office of Geothermal Technologies, ofThe resource base for geothermal energy is enormous, but

Pruess, Karsten

2006-01-01T23:59:59.000Z

460

A Phase-Partitioning Model for CO2–Brine Mixtures at Elevated Temperatures and Pressures: Application to CO2-Enhanced Geothermal Systems  

E-Print Network (OSTI)

D.W. : A hot dry rock geothermal energy concept utilizingThe Future of Geothermal Energy. (Massachusetts Institute ofa renewed interest in geothermal energy, and particularly in

Spycher, Nicolas; Pruess, Karsten

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "geothermal system cxs" 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.


461

Enhanced geothermal systems (EGS) using CO2 as working fluid - A novelapproach for generating renewable energy with simultaneous sequestration of carbon  

E-Print Network (OSTI)

Brown, D. A Hot Dry Rock Geothermal Energy Concept UtilizingThe resource base for geothermal energy is enormous, butproduction of geothermal energy is currently limited to

Pruess, Karsten

2006-01-01T23:59:59.000Z

462

Enhanced geothermal systems (EGS) with CO2 as heat transmission fluid--A scheme for combining recovery of renewable energy with geologic storage of CO2  

E-Print Network (OSTI)

D.W. A Hot Dry Rock Geothermal Energy Concept UtilizingThe Future of Geothermal Energy, Massachusetts Institute ofcombine recovery of geothermal energy with simultaneous

Pruess, K.

2010-01-01T23:59:59.000Z

463

Geothermal Literature Review At Lightning Dock Geothermal Area...  

Open Energy Info (EERE)

search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal Literature Review At Lightning Dock Geothermal Area (Schochet, Et Al., 2001) Exploration Activity...

464

Geothermal Literature Review At Lightning Dock Geothermal Area...  

Open Energy Info (EERE)

Exploration Activity: Geothermal Literature Review At Lightning Dock Geothermal Area (Grant, 1978) Exploration Activity Details Location Lightning Dock Geothermal Area...

465

Geothermal energy  

Science Journals Connector (OSTI)

By virtue of its geographical distribution and the quantities of energy which could be tapped, the possible overall contribution of geothermal energy towards meeting Europe’s future energy requirements is much sm...

1977-01-01T23:59:59.000Z

466

Geothermal Energy  

Science Journals Connector (OSTI)

Geothermal energy is the natural heat of the earth....31 J. This quantity of energy is inexhaustible by any technical use (the present technical energy consumption of the world is of the...20 J).

O. Kappelmeyer

1982-01-01T23:59:59.000Z

467

Development of Exploration Methods for Engineered Geothermal System through Integrated Geoscience Interpretation  

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

DOE Geothermal Peer Review 2010 - Presentation. This project will deploy, test and calibrate Non-invasive EGS Exploration Methodology integrating geoscience data to predict temperature and rock type at a scale of 5km x 5km at depths of 1-5km.

468

Development of Advanced Thermal-Hydrological-Mechanical-Chemical (THMC) Modeling Capabilities for Enhanced Geothermal Systems  

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

Project objectives: Develop a general framework for effective flow of water, steam and heat in in porous and fractured geothermal formations. Develop a computational module for handling coupled effects of pressure, temperature, and induced rock deformations. Develop a reliable model of heat transfer and fluid flow in fractured rocks.

469

Blind Geothermal System Exploration in Active Volcanic Environments; Multi-phase Geophysical and Geochemical Surveys in Overt & Subtle Volcanic Systems, Hawaii & Maui  

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

DOE Geothermal Technologies Peer Review 2010 - Presentation. Project Objective: To use a combination of traditional geophysical and geochemical tools with exploration suites not typically used in geothermal exploration.

470

Geothermal Literature Review At Lightning Dock Geothermal Area...  

Open Energy Info (EERE)

Geothermal Literature Review At Lightning Dock Geothermal Area (Smith, 1978) Exploration Activity Details Location Lightning Dock Geothermal Area Exploration Technique Geothermal...

471

Pinpointing America's Geothermal Resources with Open Source Data |  

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

Pinpointing America's Geothermal Resources with Open Source Data Pinpointing America's Geothermal Resources with Open Source Data Pinpointing America's Geothermal Resources with Open Source Data January 3, 2013 - 1:37pm Addthis A geothermally-heated greenhouse just west of Newcastle, Utah. The National Geothermal Data System -- a new, interactive open source data tool -- is helping researchers and industry identify more geothermal resources across America. | Photo by Robert Blackett, NREL. A geothermally-heated greenhouse just west of Newcastle, Utah. The National Geothermal Data System -- a new, interactive open source data tool -- is helping researchers and industry identify more geothermal resources across America. | Photo by Robert Blackett, NREL. Arlene Anderson Technology Development Manager, Geothermal Technologies Program

472

Pinpointing America's Geothermal Resources with Open Source Data |  

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

Pinpointing America's Geothermal Resources with Open Source Data Pinpointing America's Geothermal Resources with Open Source Data Pinpointing America's Geothermal Resources with Open Source Data January 3, 2013 - 1:37pm Addthis A geothermally-heated greenhouse just west of Newcastle, Utah. The National Geothermal Data System -- a new, interactive open source data tool -- is helping researchers and industry identify more geothermal resources across America. | Photo by Robert Blackett, NREL. A geothermally-heated greenhouse just west of Newcastle, Utah. The National Geothermal Data System -- a new, interactive open source data tool -- is helping researchers and industry identify more geothermal resources across America. | Photo by Robert Blackett, NREL. Arlene Anderson Technology Development Manager, Geothermal Technologies Program

473

Property:Geothermal/FundingOpportunityAnnouncemt | Open Energy Information  

Open Energy Info (EERE)

Geothermal/FundingOpportunityAnnouncemt Geothermal/FundingOpportunityAnnouncemt Jump to: navigation, search Property Name Geothermal/FundingOpportunityAnnouncemt Property Type String Description Funding Opportunity Announcement Pages using the property "Geothermal/FundingOpportunityAnnouncemt" Showing 25 pages using this property. (previous 25) (next 25) A A 3D-3C Reflection Seismic Survey and Data Integration to Identify the Seismic Response of Fractures and Permeable Zones Over a Known Geothermal Resource at Soda Lake, Churchill Co., NV Geothermal Project + DE-FOA-0000109 + A Demonstration System for Capturing Geothermal Energy from Mine Waters beneath Butte, MT Geothermal Project + DE-FOA-0000116 + A Geothermal District-Heating System and Alternative Energy Research Park on the NM Tech Campus Geothermal Project + DE-FOA-0000109 +

474

Seismic Technology Adapted to Analyzing and Developing Geothermal Systems Below Surface-Exposed High-Velocity Rocks  

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

Improved seismic imaging of geology across high-velocity Earth surfaces will allow more rigorous evaluation of geothermal prospects beneath volcanic outcrops. Seismic-based quantification of fracture orientation and intensity will result in optimal positioning of geothermal wells.

475

Statistical analysis of the induced Basel 2006 earthquake sequence: introducing a probability-based monitoring approach for Enhanced Geothermal Systems  

Science Journals Connector (OSTI)

......source of alternative energy with a low carbon...create an artificial geothermal reservoir. These...areas with a steep geothermal gradient because drilling costs increase exponentially...desirable to minimize energy loss through distance......

C. E. Bachmann; S. Wiemer; J. Woessner; S. Hainzl

2011-08-01T23:59:59.000Z

476

Burgett Geothermal Greenhouses Greenhouse Low Temperature Geothermal...  

Open Energy Info (EERE)

Burgett Geothermal Greenhouses Sector Geothermal energy Type Greenhouse Location Cotton City, New Mexico Coordinates Loading map... "minzoom":false,"mappingservice":"googlem...

477

Geothermal: Sponsored by OSTI -- GEOTHERMAL POWER GENERATION...  

Office of Scientific and Technical Information (OSTI)

GEOTHERMAL POWER GENERATION PLANT Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log On HomeBasic Search About Publications Advanced Search New...

478

Geothermal: Sponsored by OSTI -- Identifying Potential Geothermal...  

Office of Scientific and Technical Information (OSTI)

Identifying Potential Geothermal Resources from Co-Produced Fluids Using Existing Data from Drilling Logs: Williston Basin, North Dakota Geothermal Technologies Legacy Collection...

479

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

480

Geothermal Technologies | Open Energy Information  

Open Energy Info (EERE)

Print PDF Print PDF Geothermal Technologies Geothermal energy can be utilized for electricity or heating in more than one way. Regardless of the energy conversion, geothermal energy requires heat(in the form of rock), water, and flow; and every resources will have different values for each. Some resources have very high temperature rock with high porosity (allowing for flow) but little to know water (see Enhanced Geothermal Systems (EGS). Some resources have plenty of water, great flow, but the temperatures are not very high which are commonly used for direct use. Any combination of those 3 things can be found in nature, and for that reason there are different classifications of geothermal energy. It is possible for a resource to be technically capable of both electricity production and heating purposes, but the basic classifications

Note: This page contains sample records for the topic "geothermal system cxs" 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.


481

Utilization of geothermal energy in the mining and processing of tungsten ore. Final report  

SciTech Connect

The engineering, economic, and environmental feasibility of the use of low and moderate temperature geothermal heat in the mining and processing of tungsten ore is explored. The following are covered: general engineering evaluation, design of a geothermal energy system, economics, the geothermal resource, the institutional barriers assessment, environmental factors, an alternate geothermal energy source, and alternates to geothermal development. (MHR)

Erickson, M.V.; Lacy, S.B.; Lowe, G.D.; Nussbaum, A.M.; Walter, K.M.; Willens, C.A.

1981-01-01T23:59:59.000Z

482

Proceedings of a Topical Meeting On Small Scale Geothermal Power Plants and Geothermal Power Plant Projects  

SciTech Connect

These proceedings describe the workshop of the Topical Meeting on Small Scale Geothermal Power Plants and Geothermal Power Plant Projects. The projects covered include binary power plants, rotary separator, screw expander power plants, modular wellhead power plants, inflow turbines, and the EPRI hybrid power system. Active projects versus geothermal power projects were described. In addition, a simple approach to estimating effects of fluid deliverability on geothermal power cost is described starting on page 119. (DJE-2005)

None

1986-02-12T23:59:59.000Z

483

Colorado State Capitol Building Geothermal Program Geothermal Project |  

Open Energy Info (EERE)

State Capitol Building Geothermal Program Geothermal Project State Capitol Building Geothermal Program Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Colorado State Capitol Building Geothermal Program Project Type / Topic 1 Recovery Act - Geothermal Technologies Program: Ground Source Heat Pumps Project Type / Topic 2 Topic Area 1: Technology Demonstration Projects Project Description This building is approximately 100 years old, and much of the building is heated with expensive district steam and lacks sufficient central cooling. The requested funding pertains to Topic Area 1 Technology Demonstration Projects. Funding would be used for Phase I - Feasibility Study and Engineering Design, Phase II - Installation and Commissioning of Equipment, and Phase III - Operation, Data Collection, and Marketing. Geothermal energy provided by an open-loop ground source heat pump system and upgrades to the building HVAC systems will reduce consumption of electricity and utility steam created with natural gas. Additionally, comfort, operations and maintenance, and air quality will be improved as a result. It is anticipated that the open loop GHP system will require a 500-650 gpm water flow rate.

484

Geothermal resources  

SciTech Connect

The United States uses geothermal energy for electrical power generation and for a variety of direct use applications. The most notable developments are The Geysers in northern California, with approximately 900 MWe, and the Imperial Valley of southern California, with 14 MWe being generated, and at Klamath Falls, Oregon and Boise, Idaho, where major district heating projects are under construction. Geothermal development is promoted and undertaken by private companies, public utilities, the federal government, and by state and local governments. Geothermal drilling activity showed an increase in exploratory and development work over the five previous years, from an average of 61 wells per year to 96 wells for 1980. These 96 wells accounted for 605,175 ft of hole. The completed wells included 18 geothermal wildcat discoveries, 15 wildcat failures, and 5 geopressured geothermal failures, a total of 38 exploratory attempts. Of the total of 58 geothermal development wells attempted, 55 were considered capable of production amounting to a success ratio of 94.8%. During 1980, two new power plants were put on line at The Geysers, increasing by 37% the total net generating capacity to over 900 MWe. Two power plants commenced production in the Imperial Valley in 1980. Southern California Edison started up a 10-MWe flash steam unit at the Brawley geothermal field in June. Steam is supplied by the Union Oil Company. After an intermittent beginning, Imperial Magma's pilot binary cycle, 11-MWe unit went on line on a continuous basis, producing 7 MWe of power. Hot water is supplied to the plant by Imperial Magma's wells.

Berge, C.W. (Phillips Petroleum Co., Sandy, UT); Lund, J.W.; Combs, J.; Anderson, D.N.

1981-10-01T23:59:59.000Z

485

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

486

Property:Geothermal/Partner6Website | Open Energy Information  

Open Energy Info (EERE)

Partner6Website Partner6Website Jump to: navigation, search Property Name Geothermal/Partner6Website Property Type URL Description Partner 6 Website (URL) Pages using the property "Geothermal/Partner6Website" Showing 4 pages using this property. C Complete Fiber/Copper Cable Solution for Long-Term Temperature and Pressure Measurement in Supercritical Reservoirs and EGS Wells Geothermal Project + http://www.sensortran.com/ + I Innovative Exploration Techniques for Geothermal Assessment at Jemez Pueblo, New Mexico Geothermal Project + http://www.pitt.edu/ + S Seismic Technology Adapted to Analyzing and Developing Geothermal Systems Below Surface-Exposed High-Velocity Rocks Geothermal Project + http://www.sercel.com/ + T The Snake River Geothermal Drilling Project - Innovative Approaches to Geothermal Exploration Geothermal Project + http://www.icdp-online.org/contenido/icdp/front_content.php +

487

Performance and thermo-economic assessments of geothermal district heating system: A case study in Afyon, Turkey  

Science Journals Connector (OSTI)

In this study energy, exergy and exergoeconomic analysis of the Afyon geothermal district heating system (AGDHS) in Afyon, Turkey is performed through thermodynamic performances and thermo-economic assessments. In the analysis, actual system data are used to assess the district heating system performance, energy and exergy efficiencies, exergy losses and loss cost rates. Energy and exergy losses throughout the AGDHS are quantified and illustrated in the flow diagram. The energy and exergy efficiencies of the overall system are found to be 37.59% and 47.54%, respectively. The largest exergy loss occurs in the heat exchangers with 14.59% and then in the reinjection wells with 14.09%. Besides, thermo-economic evaluations of the AGDHS are given in table. Energy and exergy loss rates for the AGDHS are estimated to be 5.36 kW/$ and 0.2  kW/$, respectively.

Ali Keçeba?

2011-01-01T23:59:59.000Z

<