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1

A STUDY ON LEGIONELLA PNEUMOPHILA, WATER CHEMISTRY, AND ATMOSPHERIC CONDITIONS IN COOLING TOWERS AT THE SAVANNAH RIVER SITE  

SciTech Connect

Legionnaires disease is a pneumonia caused by the inhalation of the bacterium Legionella pneumophila. The majority of illnesses have been associated with cooling towers since these devices can harbor and disseminate the bacterium in the aerosolized mist generated by these systems. Historically, Savannah River Site (SRS) cooling towers have had occurrences of elevated levels of Legionella in all seasons of the year and in patterns that are difficult to predict. Since elevated Legionella in cooling tower water are a potential health concern a question has been raised as to the best control methodology. In this work we analyze available chemical, biological, and atmospheric data to determine the best method or key parameter for control. The SRS 4Q Industrial Hygiene Manual, 4Q-1203, 1 - G Cooling Tower Operation and the SRNL Legionella Sampling Program, states that 'Participation in the SRNL Legionella Sampling Program is MANDATORY for all operating cooling towers'. The resulting reports include L. pneumophila concentration information in cells/L. L. pneumophila concentrations >10{sup 7} cells/L are considered elevated and unsafe so action must be taken to reduce these densities. These remedial actions typically include increase biocide addition or 'shocking'. Sometimes additional actions are required if the problem persists including increase tower maintenance (e.g. cleaning). Evaluation of 14 SRS cooling towers, seven water quality parameters, and five Legionella serogroups over a three-plus year time frame demonstrated that cooling tower water Legionella densities varied widely though out this time period. In fact there was no one common consistent significant variable across all towers. The significant factors that did show up most frequently were related to suspended particulates, conductivity, pH, and dissolved oxygen, not chlorine or bromine as might be expected. Analyses of atmospheric data showed that there were more frequent significant elevated Legionella concentrations when the dew point temperature was high--a summertime occurrence. However, analysis of the three years of Legionella monitoring data of the 14 different SRS Cooling Towers demonstrated that elevated concentrations are observed at all temperatures and seasons. The objective of this study is to evaluate the ecology of L. pneumophila including serogroups and population densities, chemical, and atmospheric data, on cooling towers at SRS to determine whether relationships exist among water chemistry, and atmospheric conditions. The goal is to more fully understand the conditions which inhibit or encourage L. pneumophila growth and supply this data and associated recommendations to SRS Cooling Tower personnel for improved management of operation. Hopefully this information could then be used to help control L. pneumophila growth more effectively in SRS cooling tower water.

Smith, C.; Brigmon, R.

2009-10-20T23:59:59.000Z

2

Unusual Decommissioning of Contaminated Facilities at the Savannah River Site - The Demolition of Cooling Towers 285-H and 285-F  

Science Conference Proceedings (OSTI)

Savannah River Site is an 800-square kilometer (310-square mile) U.S. Department of Energy (DOE) industrial facility located in Aiken, Allendale, and Barnwell Counties in South Carolina. The site is dedicated to environmental cleanup, developing and deploying technologies to support the cleanup mission, processing and storing nuclear materials, and supporting national security missions. The current focus in environmental management is on the cleanup of legacy materials, facilities and wastes left from the Cold War. In 2002 the DOE initiated actions to expedite cleanup focusing on significant risk reduction coupled with reducing costs. SRS published the Savannah River Site Environmental Management Integrated Deactivation and Decommissioning Plan in 2003 which addressed the final disposition and physical end state of all 1,013 Environmental Management facilities on site by the year 2025. Included in this list of facilities are reactors, fabrication facilities, process facilities and the support facilities that were required during the past 50 years. By the end of FY06, over 200 facilities had been decommissioned. This paper describes the demolition of two facilities, cooling towers 285-H and 285-F that were associated with the operation of the process canyons. Because of the circumstances surrounding these decommissions, unique and unusual techniques were safely employed to demolish and remove the cooling towers. Both 285-H and 285-F were safely felled by pulling the columns remotely to weaken the internal portion of the structure so it would collapse inwards into the basin. Cooling tower 285-H fell in less than 1 second after approximately two-thirds of the columns had been broken. See Figure 3 for a photo of 285-H after its collapse. 285-F, which was larger than 285-H, fell in three sections, two cells at a time. Once the towers were felled conventional demolition equipment was used to segregate and remove the debris. All protective measures used to protect surrounding equipment and structures were successful and the basins were cleaned out and returned to service in less than two weeks. The demolition of both cooling towers 285- H and 285-F was completed safely and timely using unconventional means to fell the towers due to structural degradation, height, limited access, radiological and asbestos hazards, and a requirement to protect equipment on all sides of the facility as well as preservation of the basins. During felling operations personnel were required to stay outside the fall zone equivalent to a distance of 150% of the height of the towers. Remote operations outside the fall zone required a tracked vehicle to pull cables attached to the columns in a predetermined sequence so as to fell the tower straight down into the basin. Once the towers fell traditional demolition equipment segregated and removed the waste. Wooden cooling towers of this vintage present a difficult challenge to traditional demolition techniques. Because of the height and potential instability of these types of facilities, considerable effort is placed on reducing the potential energy to a point where heavy equipment can reach safely without endangering the operators. The column-pulling technique chosen for both 285-H and 285-F cooling towers proved to be a safe and efficient method for demolition of these types of facilities.

Austin, William E.; Baldwin, Guy R. [Washington Savannah River Company, Aiken, SC 29808 (United States)

2008-01-15T23:59:59.000Z

3

Evaluation of yield regulation options for primary forest in Tapajos National Forest, Brazil  

E-Print Network (OSTI)

Evaluation of yield regulation options for primary forest in Tapajo´s National Forest, Brazil PaulJN, Scotland b Instituto do Homem e Meio Ambiente da Amazo^nia (IMAZON), CEP 66060-160 Bele´m, Brazil c Projeto Dendrogene, EMBRAPA, CEP 66095-100 Bele´m, Brazil Received 23 November 2005; received

4

Removal site evaluation report on the Tower Shielding Facility at Oak Ridge National Laboratory, Oak Ridge, Tennessee  

Science Conference Proceedings (OSTI)

This removal site evaluation report for the Tower Shielding Facility (TSF) at Oak Ridge National Laboratory was prepared to provide the Environmental Restoration Program with information necessary to evaluate whether hazardous and/or radiological contaminants in and around the Tower Shielding Facility pose a substantial risk to human health or the environment (i.e., a high probability of adverse effects) and if remedial site evaluations or removal actions are, therefore, required. The scope of the project included a review of historical evidence regarding operations and use of the facility; interviews with facility personnel concerning current and past operating practices; a site inspection; and identification of hazard areas requiring maintenance, removal, or remedial actions. Based an the findings of this removal site evaluation, adequate efforts are currently being made at the TSF to contain and control existing contamination and hazardous substances on site in order to protect human health and the environment No conditions requiring maintenance or removal actions to mitigate imminent or potential threats to human health and the environment were identified during this evaluation. Given the current conditions and status of the buildings associated with the TSF, this removal site evaluation is considered complete and terminated according to the requirements for removal site evaluation termination.

NONE

1996-09-01T23:59:59.000Z

5

Convection towers  

DOE Patents (OSTI)

Convection towers which are capable of cleaning the pollution from large quantities of air, of generating electricity, and of producing fresh water utilize the evaporation of water sprayed into the towers to create strong airflows and to remove pollution from the air. Turbines in tunnels at the skirt section of the towers generate electricity, and condensers produce fresh water. 6 figs.

Prueitt, M.L.

1996-01-16T23:59:59.000Z

6

Convection towers  

DOE Patents (OSTI)

Convection towers which are capable of cleaning the pollution from large quantities of air, of generating electricity, and of producing fresh water utilize the evaporation of water sprayed into the towers to create strong airflows and to remove pollution from the air. Turbines in tunnels at the skirt section of the towers generate electricity, and condensers produce fresh water.

Prueitt, Melvin L. (Los Alamos, NM)

1996-01-01T23:59:59.000Z

7

Convection towers  

DOE Patents (OSTI)

Convection towers which are capable of cleaning the pollution from large quantities of air, of generating electricity, and of producing fresh water utilize the evaporation of water sprayed into the towers to create strong airflows and to remove pollution from the air. Turbines in tunnels at the skirt section of the towers generate electricity, and condensers produce fresh water.

Prueitt, Melvin L. (Los Alamos, NM)

1995-01-01T23:59:59.000Z

8

Convection towers  

DOE Patents (OSTI)

Convection towers which are capable of cleaning the pollution from large quantities of air and of generating electricity utilize the evaporation of water sprayed into the towers to create strong airflows and to remove pollution from the air. Turbines in tunnels at the skirt section of the towers generate electricity. Other embodiments may also provide fresh water, and operate in an updraft mode.

Prueitt, Melvin L. (Los Alamos, NM)

1994-01-01T23:59:59.000Z

9

Lawrence Livermore National Laboratory (LLNL) Experimental Test Site (Site 300) Salinity Evaluation and Minimization Plan for Cooling Towers and Mechanical Equipment Discharges  

SciTech Connect

This document was created to comply with the Central Valley Regional Water Quality Control Board (CVRWQCB) Waste Discharge Requirement (Order No. 98-148). This order established new requirements to assess the effect of and effort required to reduce salts in process water discharged to the subsurface. This includes the review of technical, operational, and management options available to reduce total dissolved solids (TDS) concentrations in cooling tower and mechanical equipment water discharges at Lawrence Livermore National Laboratory's (LLNL's) Experimental Test Site (Site 300) facility. It was observed that for the six cooling towers currently in operation, the total volume of groundwater used as make up water is about 27 gallons per minute and the discharge to the subsurface via percolation pits is 13 gallons per minute. The extracted groundwater has a TDS concentration of 700 mg/L. The cooling tower discharge concentrations range from 700 to 1,400 mg/L. There is also a small volume of mechanical equipment effluent being discharged to percolation pits, with a TDS range from 400 to 3,300 mg/L. The cooling towers and mechanical equipment are maintained and operated in a satisfactory manner. No major leaks were identified. Currently, there are no re-use options being employed. Several approaches known to reduce the blow down flow rate and/or TDS concentration being discharged to the percolation pits and septic systems were reviewed for technical feasibility and cost efficiency. These options range from efforts as simple as eliminating leaks to implementing advanced and innovative treatment methods. The various options considered, and their anticipated effect on water consumption, discharge volumes, and reduced concentrations are listed and compared in this report. Based on the assessment, it was recommended that there is enough variability in equipment usage, chemistry, flow rate, and discharge configurations that each discharge location at Site 300 should be considered separately when deciding on an approach for reducing the salt discharge to the subsurface. The smaller units may justify moderate changes to equipment, and may benefit from increased cleaning frequencies, more accurate and suitable chemical treatment, and sources of make up water and discharge re-use. The larger cooling towers would be more suitable for automated systems where they don't already exist, re-circulation and treatment of blow down water, and enhanced chemical dosing strategies. It may be more technically feasible and cost efficient for the smaller cooling towers to be replaced by closed loop dry coolers or hybrid towers. There are several potential steps that could be taken at each location to reduce the TDS concentration and/or water use. These include: sump water filtration, minimization of drift, accurate chemical dosing, and use of scale and corrosion coupons for chemical calibration. The implementation of some of these options could be achieved by a step-wise approach taken at two representative facilities. Once viable prototype systems have been proven in the field, systematic implementation should proceed for the remaining systems, with cost, desired reduction, and general feasibility taken into consideration for such systems.

Daily III, W D

2010-02-24T23:59:59.000Z

10

Tower Temperature and Humidity Sensors (TWR) Handbook  

Science Conference Proceedings (OSTI)

Three tall towers are installed at the Atmospheric Radiation Measurement (ARM) Climate Research Facility: a 60-meter triangular tower at the Southern Great Plains (SGP) Central Facility (CF), a 21-meter walkup scaffolding tower at the SGP Okmulgee forest site (E21), and a 40-meter triangular tower at the North Slope of Alaska (NSA) Barrow site. The towers are used for meteorological, radiological, and other measurements.

Cook, DR

2010-02-01T23:59:59.000Z

11

Convection towers  

DOE Patents (OSTI)

Convection towers which are capable of cleaning the pollution from large quantities of air and of generating electricity utilize the evaporation of water sprayed into the towers to create strong airflows and to remove pollution from the air. Turbines in tunnels at the skirt section of the towers generate electricity. Other embodiments may also provide fresh water, and operate in an updraft mode. 5 figures.

Prueitt, M.L.

1994-02-08T23:59:59.000Z

12

Cooling tower waste reduction  

SciTech Connect

At Lawrence Livermore National Laboratory (LLNL), the two main cooling tower systems (central and northwest) were upgraded during the summer of 1997 to reduce the generation of hazardous waste. In 1996, these two tower systems generated approximately 135,400 lbs (61,400 kg) of hazardous sludge, which is more than 90 percent of the hazardous waste for the site annually. At both, wet decks (cascade reservoirs) were covered to block sunlight. Covering the cascade reservoirs reduced the amount of chemical conditioners (e.g. algaecide and biocide), required and in turn the amount of waste generated was reduced. Additionally, at the northwest cooling tower system, a sand filtration system was installed to allow cyclical filtering and backflushing, and new pumps, piping, and spray nozzles were installed to increase agitation. the appurtenance upgrade increased the efficiency of the cooling towers. The sand filtration system at the northwest cooling tower system enables operators to continuously maintain the cooling tower water quality without taking the towers out of service. Operational costs (including waste handling and disposal) and maintenance activities are compared for the cooling towers before and after upgrades. Additionally, the effectiveness of the sand filter system in conjunction with the wet deck covers (northwest cooling tower system), versus the cascade reservoir covers alone (south cooling tower south) is discussed. the overall expected return on investment is calculated to be in excess of 250 percent. this upgrade has been incorporated into the 1998 DOE complex-wide water conservation project being led by Sandia National Laboratory/Albuquerque.

Coleman, S.J.; Celeste, J.; Chine, R.; Scott, C.

1998-05-01T23:59:59.000Z

13

towers of Hanoi  

Science Conference Proceedings (OSTI)

NIST. towers of Hanoi. (classic problem). Definition: Given three posts (towers) and n disks of decreasing sizes, move the ...

2013-08-23T23:59:59.000Z

14

OCCUPATIONAL COOLING TOWERS  

E-Print Network (OSTI)

HEALTH SCIENCES LIBRARY COOLING TOWERS EMPLOYEE HEALTH B C D F E CHILDREN'S ELEVATORS MEDICAL SCHOOL

Crews, Stephen

15

Low Wind Speed Technology Phase II: Design and Demonstration of On-Site Fabrication of Fluted-Steel Towers Using LITS-Form(TM) Process  

DOE Green Energy (OSTI)

This fact sheet describes NREL's subcontract with Native American Technologies to develop a new method of metal plate forming to produce wind turbine towers.

Not Available

2006-06-01T23:59:59.000Z

16

SMUD Kokhala Power Tower Study  

DOE Green Energy (OSTI)

Kokhala is the name of a new hybridized power tower design which integrates a nitrate-salt solar power tower with a gas turbine combined-cycle power plant. This integration achieves high value energy, low costs, and lower investor risk than a conventional solar only power tower plant. One of the primary advantages of this system is that it makes small power tower plants much more economically competitive with conventional power generation technologies. This paper is an overview of a study that performed a conceptual evaluation of a small (30 MWe) commercial plant suitable for the Sacramento Municipal Utility District`s (SMUD) Rancho Seco power plant site near Sacramento, California. This paper discusses the motivation for using a small hybrid solar plant and provides an overview of the analysis methodology used in the study. The results indicate that a power tower integrated with an advanced gas turbine, combined with Sacramento`s summer solar resource, could produce a low- risk, economically viable power generation project in the near future.

Price, Henry W. [National Renewable Energy Laboratory, Golden, CO (United States); Whitney, Daniel D.; Beebe, H.I. [Sacramento Municipal Utility District, CA (United States)

1997-06-01T23:59:59.000Z

17

Feasibility Study of Economics and Performance of Solar Photovoltaics at the Tower Road Site in Aurora, Colorado. A Study Prepared in Partnership with the Environmental Protection Agency for the RE-Powering America's Land Initiative: Siting Renewable Energy on Potentially Contaminated Land and Mine Sites  

DOE Green Energy (OSTI)

The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Tower Road site in Aurora, Colorado, for a feasibility study of renewable energy production. The National Renewable Energy Laboratory (NREL) provided technical assistance for this project. The purpose of this report is to assess the site for a possible photovoltaic (PV) system installation and estimate the cost, performance, and site impacts of different PV options. In addition, the report recommends financing options that could assist in the implementation of a PV system at the site. This study did not assess environmental conditions at the site.

Van Geet, O.; Mosey, G.

2013-03-01T23:59:59.000Z

18

Projective preservation : reframing Rudolph's Tower for Boston  

E-Print Network (OSTI)

By 2012, the fate of Paul Rudolph's tower in downtown Boston has been in question for years while a vision of a denser city calls for its demolition. Projected development on the site currently argues that to move forward, ...

Turner, Jessica K

2012-01-01T23:59:59.000Z

19

Three LBA-ECO Data Sets Released  

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

4 Soil Moisture Data, km 83 Tower Site, Tapajos National Forest. Data set prepared by M.L. Goulden, S.D. Miller, and H.R. da Rocha. This data set reports continuous high-resolution...

20

Three Data Sets Released from LBA-ECO  

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

(LBA). LBA-ECO CD-04 Logging Damage, km 83 Tower Site, Tapajos National Forest, Brazil. Data set prepared by C.A.D. de Sousa, J.R. Elliot, E.L. Read, and A.M. Figueira. This...

Note: This page contains sample records for the topic "tower site tapajos" 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

SSA Young Aspen Site  

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

Site (SSA-YA) The pole-tower at the YA site Closer look at the pole-tower at the YA site Solar panels powering the site, mounted on a folding ladder The young aspen canopy...

22

Assessment of Tall Wind Tower Technology  

Science Conference Proceedings (OSTI)

Technologies that enable wind turbines to capture more energy at a given site have the potential to reduce the overall cost of energy, thereby making wind power more competitive against conventional power generation. Because wind speed generally increases with height above ground, one way to increase energy capture is to elevate the rotor by means of a taller tower. To exploit this potential, a number of tall tower models are under development or have recently been introduced to the wind energy market. I...

2011-11-08T23:59:59.000Z

23

Cooling Tower Technology Conference  

Science Conference Proceedings (OSTI)

Cooling towers and associated systems cause significant loss of availability and heat rate degradation in both nuclear and fossil-fired power plants. Twenty-one papers presented at a 2003 conference in Charleston, South Carolina discussed industrial experience and provided case histories of cooling tower problems and solutions.

2003-08-12T23:59:59.000Z

24

Oak Ridge's EM Program Demolishes North America's Tallest Water Tower |  

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

Demolishes North America's Tallest Water Demolishes North America's Tallest Water Tower Oak Ridge's EM Program Demolishes North America's Tallest Water Tower August 27, 2013 - 12:00pm Addthis Oak Ridge’s K-1206 F Fire Water Tower falls into an empty field during a recent demolition project. Oak Ridge's K-1206 F Fire Water Tower falls into an empty field during a recent demolition project. OAK RIDGE, Tenn. - Oak Ridge's EM program recently demolished one of the most iconic structures at the East Tennessee Technology Park (ETTP). The 382-foot checkerboard water tower - the tallest in North America - dominated the site's skyline since its construction in 1958. The K-1206 F Fire Water Tower operated as part of the site's fire protection system, but it was drained, disconnected and permanently taken

25

Cooling Towers, The Debottleneckers  

E-Print Network (OSTI)

Power generating plants and petro-chemical works are always expanding. An on-going problem is to identify and de-bottle neck restricting conditions of growth. The cooling tower is a highly visible piece of equipment. Most industrial crossflow units are large structures, Illustration 1. Big budget money and engineering time goes into gleaming stainless steel equipment and exotic process apparatus, the poor cooling tower is the ignored orphan of the system. Knowledgeable Engineers, however, are now looking into the function of the cooling tower, which is to produce colder water- and question the quality of water discharged from that simple appearing box. These cross-flow structures are quite large, ranging up to 60 feet tall with as many as 6 or more cells in a row. With cells up to 42 feet long so immense in aspect, with fans rotating, operators assume, just by appearances, that all is well, and usually pay no attention to the quality of cold water returning from the cooling tower. The boxes look sturdy, but the function of the cooling tower is repeated ignored production of water as cold as possible.

Burger, R.

1998-04-01T23:59:59.000Z

26

China Solar Tower Development | Open Energy Information  

Open Energy Info (EERE)

Tower Development Jump to: navigation, search Name China Solar Tower Development Place China Sector Solar Product Joint venture for development of solar towers in China, announced...

27

Solar power towers  

DOE Green Energy (OSTI)

The high desert near Barstow, California, has witnessed the development of this country`s first two solar power towers. Solar One operated successfully from 1982 to 1988 and proved that power towers work efficiently to produce utility-scale power from sunlight. Solar Two was connected to the utility grid in 1996 and is operating today. Like its predecessor, Solar Two is rated at 10 megawatts. An upgrade of the Solar One plant, Solar Two demonstrates how solar energy can be stored in the form of heat in molten salt for power generation on demand. The experience gained with these two pilot power towers has established a foundation on which industry can develop its first commercial plants. These systems produce electricity on a large scale. They are unique among solar technologies because they can store energy efficiently and cost effectively. They can operate whenever the customer needs power, even after dark or during cloudy weather.

Not Available

1998-04-01T23:59:59.000Z

28

Solar power towers  

DOE Green Energy (OSTI)

The high desert near Barstow, California, has witnessed the development of this country's first two solar power towers. Solar One operated successfully from 1982 to 1988 and proved that power towers work efficiently to produce utility-scale power from sunlight. Solar Two was connected to the utility grid in 1996 and is operating today. Like its predecessor, Solar Two is rated at 10 megawatts. An upgrade of the Solar One plant, Solar Two demonstrates how solar energy can be stored in the form of heat in molten salt for power generation on demand. The experience gained with these two pilot power towers has established a foundation on which industry can develop its first commercial plants. These systems produce electricity on a large scale. They are unique among solar technologies because they can store energy efficiently and cost effectively. They can operate whenever the customer needs power, even after dark or during cloudy weather.

NONE

1998-04-01T23:59:59.000Z

29

Cooling Towers- Energy Conservation Strategies Understanding Cooling Towers  

E-Print Network (OSTI)

Cooling towers are energy conservation devices that Management, more often than not, historically overlooks in the survey of strategies for plant operating efficiencies. The utilization of the colder water off the cooling tower is the money maker!

Smith, M.

1991-06-01T23:59:59.000Z

30

Proceedings: Cooling Tower Technology Conference  

Science Conference Proceedings (OSTI)

Cooling towers and associated systems performance strongly affect availability and heat rate in fossil and nuclear power plants. Twenty-two papers presented at the 1997 Cooling Tower Technology Conference discuss research results, industry experience, and case histories of cooling tower problems and solutions.

1997-08-13T23:59:59.000Z

31

Wind Shear Characteristics at Central Plains Tall Towers: Preprint  

SciTech Connect

Conference paper for WindPower 2006 held June 4-7, 2006, in Pittsburgh, PA, describing the wind shear characteristics at tall tower sites in the Central Plains of the United States.

Schwartz, M.; Elliott, D.

2006-06-01T23:59:59.000Z

32

Pueblo Towers | Open Energy Information  

Open Energy Info (EERE)

Towers Towers Jump to: navigation, search Name Pueblo Towers Facility Pueblo Towers Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Vestas Towers Developer Vestas Towers Energy Purchaser Vestas Towers Location CO Coordinates 38.205834°, -104.588141° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.205834,"lon":-104.588141,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

33

Abstract On the Automorphism Tower  

E-Print Network (OSTI)

In this thesis I study the automorphism tower of free nilpotent groups. Our main tool in studying the automorphism tower is to embed every group as a lattice in some Lie group. Using known rigidity results the automorphism group of the discrete group can be embedded into the automorphism group of the Lie group. This allows me to lift the description of the derivation tower of the free nilpotent Lie algebra to obtain information about the automorphism tower of the free nilpotent group. The main result in this thesis states that the automorphism tower of the free nilpotent group ?(n, d) on n generators and nilpotency class d, stabilizes after finitely many steps. If the nilpotency class is small compared to the number of generators we have that the height of the automorphism tower is at most

Of Free Nilpotent Groups; Martin Dimitrov Kassabov

2003-01-01T23:59:59.000Z

34

Seismic analysis of lattice towers.  

E-Print Network (OSTI)

??In the absence of specific guidelines for the seismic analysis of self-supporting telecommunication towers, designers may be tempted to apply simplified building code approaches to (more)

Khedr, Mohamed Abdel Halim.

1998-01-01T23:59:59.000Z

35

2010sr27[cooling_tower_complete].doc  

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

Friday, September 17, 2010 Friday, September 17, 2010 james-r.giusti@srs.gov Paivi Nettamo, SRNS, (803) 952-6938 paivi.nettamo@srs.gov K Cooling Tower Project Reaches Completion Aiken, S.C. - One of the most visual milestones of cleanup projects underway within the Department of Energy's Office of Environmental Management was the demolition of the K-Reactor Cooling Tower at the Savannah River Site (SRS). Now, this American Recovery and Reinvestment Act project has been

36

FLORIDA TOWER FOOTPRINT EXPERIMENTS  

SciTech Connect

The Florida Footprint experiments were a series of field programs in which perfluorocarbon tracers were released in different configurations centered on a flux tower to generate a data set that can be used to test transport and dispersion models. These models are used to determine the sources of the CO{sub 2} that cause the fluxes measured at eddy covariance towers. Experiments were conducted in a managed slash pine forest, 10 km northeast of Gainesville, Florida, in 2002, 2004, and 2006 and in atmospheric conditions that ranged from well mixed, to very stable, including the transition period between convective conditions at midday to stable conditions after sun set. There were a total of 15 experiments. The characteristics of the PFTs, details of sampling and analysis methods, quality control measures, and analytical statistics including confidence limits are presented. Details of the field programs including tracer release rates, tracer source configurations, and configuration of the samplers are discussed. The result of this experiment is a high quality, well documented tracer and meteorological data set that can be used to improve and validate canopy dispersion models.

WATSON,T.B.; DIETZ, R.N.; WILKE, R.; HENDREY, G.; LEWIN, K.; NAGY, J.; LECLERC, M.

2007-01-01T23:59:59.000Z

37

REGULATION OF CARBON SEQUESTRATION AND WATER USE IN A OZARK FOREST: PROPOSING A NEW STRATEGICALLY LOCATED AMERIFLUX TOWER SITE IN MISSOURI  

Science Conference Proceedings (OSTI)

by June 14, 2004, the MOFLUX site was fully instrumented and data streams started to flow. A primary accomplished deliverable for the project period was the data streams of CO{sub 2} and water vapor fluxes and numerous meteorological variables (from which prepared datasets have been submitted to the AmeriFlux data archive for 2004-2006, Additionally, measurements of leaf biochemistry and physiology, biomass inventory, tree allometry, successional trends other variables were obtained.

Pallardy, Stephen G

2013-04-19T23:59:59.000Z

38

PERFORMANCE ANALYSIS OF MECHANICAL DRAFT COOLING TOWER  

SciTech Connect

Industrial processes use mechanical draft cooling towers (MDCT's) to dissipate waste heat by transferring heat from water to air via evaporative cooling, which causes air humidification. The Savannah River Site (SRS) has cross-flow and counter-current MDCT's consisting of four independent compartments called cells. Each cell has its own fan to help maximize heat transfer between ambient air and circulated water. The primary objective of the work is to simulate the cooling tower performance for the counter-current cooling tower and to conduct a parametric study under different fan speeds and ambient air conditions. The Savannah River National Laboratory (SRNL) developed a computational fluid dynamics (CFD) model and performed the benchmarking analysis against the integral measurement results to accomplish the objective. The model uses three-dimensional steady-state momentum, continuity equations, air-vapor species balance equation, and two-equation turbulence as the basic governing equations. It was assumed that vapor phase is always transported by the continuous air phase with no slip velocity. In this case, water droplet component was considered as discrete phase for the interfacial heat and mass transfer via Lagrangian approach. Thus, the air-vapor mixture model with discrete water droplet phase is used for the analysis. A series of parametric calculations was performed to investigate the impact of wind speeds and ambient conditions on the thermal performance of the cooling tower when fans were operating and when they were turned off. The model was also benchmarked against the literature data and the SRS integral test results for key parameters such as air temperature and humidity at the tower exit and water temperature for given ambient conditions. Detailed results will be published here.

Lee, S; Alfred Garrett, A; James02 Bollinger, J; Larry Koffman, L

2009-02-10T23:59:59.000Z

39

Wind Shear Characteristics at Central Plains Tall Towers  

Science Conference Proceedings (OSTI)

The object of this study is to analyze wind shear characteristics at tall tower sites in the Central Plains of the United States. The hub heights of modern turbines used for wind farm projects are now 70 meters (m) to 100 m above ground and some advanced turbines under development for deployment during the second half of this decade are rated at 2-5 megawatts of energy generation with rotor diameters near 100 m and hub heights of 100-120 m. These advanced turbines will take advantage of the higher wind speeds aloft to generate more wind energy. Specific knowledge of important wind shear characteristics near and at turbine hub height is needed to optimize turbine design and wind farm layout. Unfortunately, wind speed shear measurements at heights of 80-120 m were virtually nonexistent a few years ago and are still quite uncommon today. The Central Plains is a prime wind energy development region and knowledge about the wind shear characteristics will reduce uncertainty about the resource and enhance wind farm design. Previous analyses of tall tower data (Schwartz and Elliott, 2005) concentrated on data from specific states. The wind energy community has recognized the need to fill the gap of direct wind speed measurements at levels 70 m and higher above the ground. Programs instituted during the last 5 years at the state level and supported by the U.S. Department of Energy's (DOE) State Energy Program initiative have placed anemometers and vanes at several levels on existing tall (70 m+) communication towers. The Central Plains has a fairly high concentration of tall tower sites. The distribution of tall tower sites varies among the states in the Central Plains, because the tall tower program is new and the available state and federal funding to establish tall towers is variable. Our wind resource assessment group at DOE's National Renewable Energy Laboratory (NREL) has obtained much of these necessary measurement data from both individual state sources and regional organizations. Most of the data are available to the public, though data from one tower in Colorado are proprietary. We have begun to analyze important wind climate parameters, including wind shear from the tall towers. A total of 13 tall towers were used for this study. Eleven of the towers had the highest anemometer level between 100 m and 113 m. Two towers had the highest measurement level between 70 m and 85 m above ground. The distribution of the towers among the states is: two sites in Texas and Oklahoma; six sites in Kansas; and one site each in Colorado, South Dakota, and North Dakota. Figure 1 shows the locations and names of the thirteen towers. The wind resource at these sites can be classified as ranging from good-to-excellent. Eight tall tower sites have Class 3 resource, four sites have Class 4 resource, and one has Class 5 resource at 50 m.

Schwartz, M.; Elliott, D.

2006-01-01T23:59:59.000Z

40

Cooling Towers, Energy Conservation Strategies  

E-Print Network (OSTI)

Cooling towers, because of their seeming simplicity, are usually orphans of the facilities operation. We are all aware that cooling towers are the step-children of the chemical process plant, electric power generating station, and refrigeration system. While our engineers are pretty well convinced of the importance of their sophisticated equipment, and rightly so, they take the cooling towers and the cold water returning from them for granted. Design Conditions are specified for the particular requirements before a cooling tower is purchased. After it is put on the line and the cold water temperature or volume becomes inadequate, they look to solutions other than the obvious. While all cooling towers are purchased to function at 100% of capability in accordance with the required Design Conditions, in actual on stream employment, the level of operation many times is lower, downwards to as much as 50% due to a variety of reasons: (1) The present service needed is now greater than the original requirements which the tower was purchased for; (2) 'Slippage' due to usage and perhaps deficient maintenance has reduced the performance of the tower over years of operation; (3) The installation could have been originally undersized due to the low bidder syndrome; and (4) New plant expansion needs colder temperatures off the tower.

Burger, R.

1983-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tower site tapajos" 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

Flux Sampling Errors for Aircraft and Towers  

Science Conference Proceedings (OSTI)

Various errors and influences leading to differences between tower- and aircraft-measured fluxes are surveyed. This survey is motivated by reports in the literature that aircraft fluxes are sometimes smaller than tower-measured fluxes. Both tower ...

L. Mahrt

1998-04-01T23:59:59.000Z

42

Thermal performance of cooling towers  

SciTech Connect

Wet cooling towers are often used in HVAC applications to reject heat to the atmosphere. Heat rejection is accomplished within the tower by heat and mass transfer between hot water droplets and ambient air. These heat and mass transfer processes and the resulting coefficient of performance are often misunderstood and misinterpreted. To demystify these concepts, the heat and mass transfer exchange at the water droplet level are reviewed. This is followed by an analysis of an idealized spray-type tower to show how cooling tower performance is affected by fill height, water retention time, and air and water mass flow rates. Finally, the so-called coefficient of performance of cooling towers is examined.

Bernier, M.A. [Ecole Polytechnique de Montreal, Quebec (Canada)

1995-04-01T23:59:59.000Z

43

SSA Old Aspen Site  

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

SSA-OA) SSA-OA) View an aerial photo-map of the SSA-OA site The two huts and boardwalk The scaffold flux tower The base of the scaffold flux tower One of the canopy access towers The SRC meteorology tower The truss tower and cables from the flux tower Cabled tethersonde above the SSA Old Aspen (SSA-OA) site The tethersonde about to be launched (tethered balloon and radiosonde) Picture of the SRC meteorological tower at the SSA-OA site taken from the flux tower. Improved road into the SSA-OA site within the Prince Albert National Park. Aerial of SSA-OA tower during the winter IFC. SSA-OA flux tower about 40 meters in height, approximately 20 meters above canopy. Photograph of investigator hut and boardwalk at the SSA-OA site. Andy Black and associate within the hut at the SSA-OA site showing the various recording and data display instruments from the tower.

44

SSA Old Black Spruce Site  

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

SSA-OBS) SSA-OBS) View an aerial photo-map of the SSA-OBS site. The 1.3 km road and boardwalk from OBS (facing North) The control box at the base of the flux tower The ARGO ATV used to haul equipment to OBS The double-scaffold flux tower The hut and boardwalk The TE canopy tower Construction during 1993 of the tower site at the Old Black Spruce (SSA-OBS) Trail into SSA-OBS. Large scar and canal created by construction vehicles cutting a new path each visit to avoid being mired in bog. Photograph of construction vehicle in action as it lays the electrical cable into SSA-OBS sites. Tower construction crew working on the foundation for the SSA-OBS tower. Aerial view of double-scaffold flux tower at SSA-OBS site and 100 m cable tramway for transporting the PARABOLA instrument between the flux and Rohn tower.

45

OUT Success Stories: Power Towers  

DOE Green Energy (OSTI)

Power towers convert the thermal energy of the sun to electricity. They are large-scale power plants producing clean energy and suited for operation in sunny, semi-arid regions of the world.

Jones, J.

2000-08-31T23:59:59.000Z

46

Cooling Towers, Energy Conservation Machines  

E-Print Network (OSTI)

Cooling towers, in all too many industrial plants, are often the neglected units of the process chain which are hidden bonanzas for energy conservation and dollar savings. By lowering the entire systems temperature by the use of colder water returning from the cooling tower, greater chemical product volume can be condensed and less energy is required to run compressors. This paper will discuss two case histories and the rapid cost-effective savings thereby accruing through retrofit.

Burger, R.

1980-01-01T23:59:59.000Z

47

SSA Old Jack Pine Site  

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

SSA-OJP) SSA-OJP) View an aerial photo-map of the SSA-OJP site. The road to the OJP site The flux tower and the hut The truss tower connected to the flux tower by cables The flux tower< The canopy access tower The SRC meteorology tower The under-canopy flux station The moss-covered jack pine tree The ground cover at the OJP site Aerial view of the SSA-Old Jack Pine site looking to the northeast. The Flux Tower at SSA-Old Jack Pine site. The Sodar site. The NOAA sodar located near the Old Jack Pine in the SSA. The under-canopy radiation track This is a 14 meter-long metal track in the forest with a mobile radiometer out on an arm on a small motorized cart (visible at the center of the picture) that travels through the forest taking measurements of PAR and net radiation.

48

Oriented spray-assisted cooling tower  

Science Conference Proceedings (OSTI)

Apparatus useful for heat exchange by evaporative cooling when employed in conjunction with a conventional cooling tower. The arrangement includes a header pipe which is used to divert a portion of the water in the cooling tower supply conduit up stream of the cooling tower to a multiplicity of vertical pipes and spray nozzles which are evenly spaced external to the cooling tower so as to produce a uniform spray pattern oriented toward the central axis of the cooling tower and thereby induce an air flow into the cooling tower which is greater than otherwise achieved. By spraying the water to be cooled towards the cooling tower in a region external to the cooling tower in a manner such that the spray falls just short of the cooling tower basin, the spray does not interfere with the operation of the cooling tower, proper, and the-maximum increase in air velocity is achieved just above the cooling tower basin where it is most effective. The sprayed water lands on a concrete or asphalt apron which extends from the header pipe to the cooling tower basin and is gently sloped towards the cooling tower basin such that the sprayed water drains into the basin. By diverting a portion of the water to be cooled to a multiplicity of sprays external to the cooling tower, thermal performance is improved. 4 figs.

Bowman, C.F.

1995-04-18T23:59:59.000Z

49

A New Tall-Tower Meteorological Monitoring System  

SciTech Connect

The Atmospheric Technologies Group of the Savannah River Technology Center operates an extensive meteorological monitoring network of 13 tower in and near the Savannah River Site near Aiken, South Carolina. The data from this system are available in ''real-time'' for emergency response atmospheric release modeling and operational weather forecasting.

Parker, M.J.

2003-01-14T23:59:59.000Z

50

Wind Shear Characteristics at Central Plains Tall Towers (presentation)  

SciTech Connect

The objectives of this report are: (1) Analyze wind shear characteristics at tall tower sites for diverse areas in the central plains (Texas to North Dakota)--Turbines hub heights are now 70-100 m above ground and Wind measurements at 70-100+ m have been rare. (2) Present conclusions about wind shear characteristics for prime wind energy development regions.

Schwartz, M.; Elliott, D.

2006-06-05T23:59:59.000Z

51

Power Tower Systems for Concentrating Solar Power  

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

In power tower concentrating solar power systems, numerous large, flat, sun-tracking mirrors, known as heliostats, focus sunlight onto a receiver at the top of a tall tower. A heat-transfer fluid...

52

ARM - Campaign Instrument - aerosol-tower-eml  

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

govInstrumentsaerosol-tower-eml Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : EML Tower based Aerosol...

53

Sorting in Patrick Geddes' Outlook Tower  

E-Print Network (OSTI)

i n g in P a t r i c k Outlook Tower Geddes' J Joyce Barleythree months at the Outlook 'lower in Edinburgh, sorting theand services. The Outlook Tower was a disused observatory

Earley, Joyce

1991-01-01T23:59:59.000Z

54

GreenTower | Open Energy Information  

Open Energy Info (EERE)

GreenTower Jump to: navigation, search Name GreenTower Place Haiger 6, Germany Zip 35708 Sector Solar Product Developer of a solar chimney technology, with greenhouses for food...

55

Proceedings of the Cooling Tower Technology Conference  

Science Conference Proceedings (OSTI)

The performance of cooling towers and associated systems strongly affects availability and heat rate in fossil and nuclear power plants. Twenty-four papers presented at the 2012 Cooling Tower Technology Conference, held August 89, 2012, in Pensacola, Florida, discuss research results, industry experience, and case histories of cooling tower problems and solutions. ...

2012-09-13T23:59:59.000Z

56

Proceedings: Cooling Tower and Advanced Cooling Systems Conference  

Science Conference Proceedings (OSTI)

Cooling towers and associated systems performance strongly affects availability and heat rate in fossil and nuclear power plants. Papers presented at EPRI's 1994 Cooling Tower and Advanced Cooling Systems Conference discuss research results, industry experience, and case histories of cooling tower problems and solutions. Specific topics include cooling tower upgrades and retrofits, cooling tower performance, cooling tower fouling, and dry and hybrid cooling systems.

1995-03-09T23:59:59.000Z

57

Cooling Tower Fan Motor Power Optimization Study  

Science Conference Proceedings (OSTI)

Cooling towers are in use at more than 200 major electric generating plants in the United States, representing approximately 800 units and a total of more than 210,000 MW. The auxiliary power consumed by cooling tower fan motors can significantly reduce the net power output of steam-cycle power plants. Cooling tower specifications are established by the economic and operational requirements of maximum unit load and the most demanding environmental conditions expected in the towers locale. Since power pl...

2011-11-16T23:59:59.000Z

58

Hydrogen Storage in Wind Turbine Towers  

DOE Green Energy (OSTI)

Low-cost hydrogen storage is recognized as a cornerstone of a renewables-hydrogen economy. Modern utility-scale wind turbine towers are typically conical steel structures that, in addition to supporting the rotor, could be used to store hydrogen. This study has three objectives: (1) Identify the paramount considerations associated with using a wind turbine tower for hydrogen storage; (2)Propose and analyze a cost-effective design for a hydrogen-storing tower; and (3) Compare the cost of storage in hydrogen towers to the cost of storage in conventional pressure vessels. The paramount considerations associated with a hydrogen tower are corrosion (in the form of hydrogen embrittlement) and structural failure (through bursting or fatigue life degradation). Although hydrogen embrittlement (HE) requires more research, it does not appear to prohibit the use of turbine towers for hydrogen storage. Furthermore, the structural modifications required to store hydrogen in a tower are not cost prohibitive.

Kottenstette, R.; Cotrell, J.

2003-09-01T23:59:59.000Z

59

Cooling Tower Inspection with Scuba  

E-Print Network (OSTI)

A serious problem of scale and other solid material settling in heat transfer equipment was threatening to shut down our ethylene plant. All evidence pointed to the cooling tower as the source of the contamination. Visual inspection of the cooling tower pump suction basin was accomplished by diving into the basin using SCUBA gear. It was possible to see a build-up of debris on the pump suction basket strainers and on the floor of the sumps. Also, it was discovered that one of the four baskets had been installed incorrectly. Photographs of the basket strainers were taken to aid in describing their exact condition. With the aid of SCUBA it was possible to sufficiently clean the pump sumps so that costly downtime was avoided. Likewise, using this technique, steps were taken to greatly reduce the chance for further contamination of the circulating cooling water system.

Brenner, W.

1982-01-01T23:59:59.000Z

60

SSA Fen Site  

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

View an aerial photo-map of the SSA-Fen site. A general view of the Fen The flux tower at the Fen The huts at the Fen Pink flamingos, fen hens at the SSA-Fen site. Aerial...

Note: This page contains sample records for the topic "tower site tapajos" 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

Method and system for simulating heat and mass transfer in cooling towers  

DOE Patents (OSTI)

The present invention is a system and method for simulating the performance of a cooling tower. More precisely, the simulator of the present invention predicts values related to the heat and mass transfer from a liquid (e.g., water) to a gas (e.g., air) when provided with input data related to a cooling tower design. In particular, the simulator accepts input data regarding: (a) cooling tower site environmental characteristics; (b) cooling tower operational characteristics; and (c) geometric characteristics of the packing used to increase the surface area within the cooling tower upon which the heat and mass transfer interactions occur. In providing such performance predictions, the simulator performs computations related to the physics of heat and mass transfer within the packing. Thus, instead of relying solely on trial and error wherein various packing geometries are tested during construction of the cooling tower, the packing geometries for a proposed cooling tower can be simulated for use in selecting a desired packing geometry for the cooling tower.

Bharathan, Desikan (Lakewood, CO); Hassani, A. Vahab (Golden, CO)

1997-01-01T23:59:59.000Z

62

Solar Power Tower Design Basis Document, Revision 0  

DOE Green Energy (OSTI)

This report contains the design basis for a generic molten-salt solar power tower. A solar power tower uses a field of tracking mirrors (heliostats) that redirect sunlight on to a centrally located receiver mounted on top a tower, which absorbs the concentrated sunlight. Molten nitrate salt, pumped from a tank at ground level, absorbs the sunlight, heating it up to 565 C. The heated salt flows back to ground level into another tank where it is stored, then pumped through a steam generator to produce steam and make electricity. This report establishes a set of criteria upon which the next generation of solar power towers will be designed. The report contains detailed criteria for each of the major systems: Collector System, Receiver System, Thermal Storage System, Steam Generator System, Master Control System, and Electric Heat Tracing System. The Electric Power Generation System and Balance of Plant discussions are limited to interface requirements. This design basis builds on the extensive experience gained from the Solar Two project and includes potential design innovations that will improve reliability and lower technical risk. This design basis document is a living document and contains several areas that require trade-studies and design analysis to fully complete the design basis. Project- and site-specific conditions and requirements will also resolve open To Be Determined issues.

ZAVOICO,ALEXIS B.

2001-07-01T23:59:59.000Z

63

Vortex-augmented cooling tower - windmill combination  

DOE Patents (OSTI)

A cooling tower for cooling large quantities of effluent water from a production facility by utilizing natural wind forces includes the use of a series of helically directed air inlet passages extending outwardly from the base of the tower to introduce air from any direction in a swirling vortical pattern while the force of the draft created in the tower makes it possible to place conventional power generating windmills in the air passage to provide power as a by-product.

McAllister, J.E. Jr.

1982-09-02T23:59:59.000Z

64

Studies on Mathematical Models for Characterizing Plume and Drift Behavior from Cooling Towers, Volume 2: Mathematical Model for Sin gle Source (Single Tower) Cooling Tower Plume Dispersion  

Science Conference Proceedings (OSTI)

Presents an improved model for plumes from single natural-draft cooling towers. This model is expanded to treat multiple tower plumes in Volume 4.

1981-01-01T23:59:59.000Z

65

SSA Young Jack Pine Site  

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

View an aerial photo-map of the SSA-YJP site. Beginning of the "flagged path" to the tower, from the road The "new trail" to the YJP site, looking towards the site The hut and...

66

Upcoming Funding Opportunity for Tower Manufacturing and ...  

... and Lower Cost of Energy" intends to support partnerships leading to innovative designs and processes for wind turbine tower manufacturing and ...

67

Failure of Cooling Tower West Virginia 1978  

Science Conference Proceedings (OSTI)

... The Willow Island disaster was the collapse of a cooling tower under ... In response to this request, NBS carried out field, laboratory and analytical ...

2011-08-12T23:59:59.000Z

68

Demolition of Cooling Towers from the World's First Commercial Reactors - the Nuclear Factor  

Science Conference Proceedings (OSTI)

The demolition of hyperbolic cooling towers would be a relatively routine demolition project because the method of demolition has been proven straightforward and repeatable with the successful demolition of over 200 similar structures in the last 30 years. This paper will detail the unique aspects of the planning and execution of the cooling tower demolition project due to its location on a nuclear site and proximity to active nuclear operations. (authors)

Foss, D.L. [British Nuclear Group Sellafield Ltd, Sellafield, Seascale, Cumbria, CA20 1PG (United Kingdom)

2006-07-01T23:59:59.000Z

69

Combined-cycle power tower  

DOE Green Energy (OSTI)

This paper evaluates a new power tower concept that offers significant benefits for commercialization of power tower technology. The concept uses a molten nitrate salt centralreceiver plant to supply heat, in the form of combustion air preheat, to a conventional combined-cycle power plant. The evaluation focused on first commercial plants, examined three plant capacities (31, 100, and 300 MWe), and compared these plants with a solar-only 100-MWe plant and with gas-only combined-cycle plants in the same three capacities. Results of the analysis point to several benefits relative to the solar-only plant including low energy cost for first plants, low capital cost for first plants, reduced risk with respect to business uncertainties, and the potential for new markets. In addition, the concept appears to have minimal technology development requirements. Significantly, the results show that it is possible to build a first plant with this concept that can compete with existing gas-only combined-cycle plants.

Bohn, M.S.; Williams, T.A.; Price, H.W.

1994-10-01T23:59:59.000Z

70

WIND DATA REPORT WBZ Tower, Hull, MA  

E-Print Network (OSTI)

WIND DATA REPORT WBZ Tower, Hull, MA 9/1/06-11/30/06 Prepared for Department of Energy (DOE) Golden the closest tower leg The data from the SecondWind Nomad2 logger is emailed to the Renewable Energy Research Energy Research Laboratory Page 10 University of Massachusetts, Amherst Amherst, MA 01003 #12;Wind Speed

Massachusetts at Amherst, University of

71

Radar Measurement of Cooling Tower Drift  

Science Conference Proceedings (OSTI)

A method of radar measurement of drift, generated by the wet cooling towers of power plants, is proposed. The water given off by the evaporative towers consists of two kinds of droplets: the recondensation dropletsgenerally less than 20 ?m in ...

Henri Sauvageot

1989-09-01T23:59:59.000Z

72

2006 EPRI Cooling Tower Technology Conference Proceedings  

Science Conference Proceedings (OSTI)

Cooling towers and associated systems cause significant loss of availability and heat rate degradation in both nuclear and fossil-fired power plants. Fifteen papers presented at a 2006 Conference in Des Moines, Iowa discussed industrial experience and provided case histories of cooling tower problems and solutions.

2006-08-01T23:59:59.000Z

73

SunShot Initiative: CSP Tower Air Brayton Combustor  

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

CSP Tower Air Brayton Combustor to someone by E-mail Share SunShot Initiative: CSP Tower Air Brayton Combustor on Facebook Tweet about SunShot Initiative: CSP Tower Air Brayton...

74

Wind turbine tower for storing hydrogen and energy  

DOE Patents (OSTI)

A wind turbine tower assembly for storing compressed gas such as hydrogen. The tower assembly includes a wind turbine having a rotor, a generator driven by the rotor, and a nacelle housing the generator. The tower assembly includes a foundation and a tubular tower with one end mounted to the foundation and another end attached to the nacelle. The tower includes an in-tower storage configured for storing a pressurized gas and defined at least in part by inner surfaces of the tower wall. In one embodiment, the tower wall is steel and has a circular cross section. The in-tower storage may be defined by first and second end caps welded to the inner surface of the tower wall or by an end cap near the top of the tower and by a sealing element attached to the tower wall adjacent the foundation, with the sealing element abutting the foundation.

Fingersh, Lee Jay (Westminster, CO)

2008-12-30T23:59:59.000Z

75

Composite Tower Solutions | Open Energy Information  

Open Energy Info (EERE)

Solutions Solutions Jump to: navigation, search Name Composite Tower Solutions Place Provo, Utah Zip 84604 Sector Wind energy Product Composite Tower Solutions manufactures equipment for wind resource assessment needs, including meteorological towers, weather towers, and data collection and instrumentation towers. Coordinates 40.233765°, -111.668509° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.233765,"lon":-111.668509,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

76

Federal Energy Management Program: Best Management Practice: Cooling Tower  

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

Cooling Tower Management to someone by E-mail Cooling Tower Management to someone by E-mail Share Federal Energy Management Program: Best Management Practice: Cooling Tower Management on Facebook Tweet about Federal Energy Management Program: Best Management Practice: Cooling Tower Management on Twitter Bookmark Federal Energy Management Program: Best Management Practice: Cooling Tower Management on Google Bookmark Federal Energy Management Program: Best Management Practice: Cooling Tower Management on Delicious Rank Federal Energy Management Program: Best Management Practice: Cooling Tower Management on Digg Find More places to share Federal Energy Management Program: Best Management Practice: Cooling Tower Management on AddThis.com... Sustainable Buildings & Campuses Operations & Maintenance

77

Cooling Tower Report, October 2008 | Department of Energy  

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

2008 Electricity Reliability Impacts of a Mandatory Cooling Tower Rule for Existing Steam Generation Units Cooling Tower Report, October 2008 More Documents & Publications...

78

Capacity Assessment of a Transmission Tower under Wind Loading.  

E-Print Network (OSTI)

??Transmission towers play a vital role in power distribution networks and are often subject to strong wind loads. Lattice tower design is often based on (more)

Mara, Thomas G

2013-01-01T23:59:59.000Z

79

Building a Better Transmission Tower | Department of Energy  

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

software that helped them build cheaper but sturdier towers for new high-voltage transmission lines. Their new towers are stronger but use less steel. They better...

80

The Southern Great Plains Site: A Climate Observatory in Oklahoma  

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

other facilities throughout the SGP site. The 60-ft meteorological tower rises from a canola field at the SGP central facility in June 2011. The 60-ft meteorological tower rises...

Note: This page contains sample records for the topic "tower site tapajos" 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

BREN Tower: A Monument to the Material Culture of Radiation Dosimetry Research  

Science Conference Proceedings (OSTI)

With a height of more than 1,500 feet, the BREN (Bare Reactor Experiment, Nevada) Tower dominates the surrounding desert landscape of the Nevada Test Site. Associated with the nuclear research and atmospheric testing programs carried out during the 1950s and 1960s, the tower was a vital component in a series of experiments aimed at characterizing radiation fields from nuclear detonations. Research programs conducted at the tower provided the data for the baseline dosimetry studies crucial to determining the radiation dose rates received by the atomic bomb survivors of Hiroshima and Nagasaki, Japan. Today, BREN Tower stands as a monument to early dosimetry research and one of the legacies of the Cold War.

Susan Edwards

2008-05-30T23:59:59.000Z

82

Explosive Demolition of a Fire-Water Tower At East Tennessee Technology Park, Oak Ridge TN  

SciTech Connect

On June 17, 2006, the Department of Energy (DOE) successfully demolished a {approx}60 year old fire-water tower (K-1206-E), located at the East Tennessee Technology Park (ETTP) in Oak Ridge, TN, using strategically placed explosive charges. The subject demolition project was executed by MCM Management Corporation and Demolition Dynamics under the management of DoE's prime contractor Bechtel Jacobs Company LLC (BJC). The K-1206-E Fire Water Tower (Tower) supported the ETTP fire water protection system from the mid- 1950's until 1991. The 378,500-L (100,000-gallon) Tower, elevated 53-m (175-feet) above grade, was located in a grassy area within 152-m (500-feet) of several other occupied facilities. Electrical, control circuits and supply water servicing the Tower were deactivated in 2003. Free liquids and sludge were removed from the tank prior to demolition. Demolition of a facility employing explosive demolition at a federal site in the 'post-9/11 era' was a substantial challenge. The subject paper discusses: - the planning and coordination steps that were taken to successfully overcome the challenges prior to the demolition of the empty, deactivated Tower; - the method used for the engineered demolition of the Tower; and - the factors responsible for the successful execution of this demolition project. At least two previous attempts were made to demolish the Tower. In the first attempt, the execution of the project was deferred by the re-allocation of funds. In the subsequent attempt in 2004, the execution of this project was postponed due to concerns that an adjacent facility would have to shut down operations during the duration of mobilization and execution of the project and thereby incur potential financial losses. A total of 51 cubic meters (1,800 cubic feet) of demolition debris was generated, which was compliantly disposed of at a local landfill followed by site restoration.

Brooksbank, R.D.; Rood, M.S.; Amrit, S.K.; Harper, M.S.; Dypolt, D.J.; Brehse, Mike [Bechtel Jacobs Company LLC, P.O. Box 4699 Oak Ridge, TN 37931 (United States)

2008-01-15T23:59:59.000Z

83

Best Management Practice: Cooling Tower Management | Department of Energy  

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

Best Management Practice: Cooling Tower Management Best Management Practice: Cooling Tower Management Best Management Practice: Cooling Tower Management October 8, 2013 - 9:39am Addthis Cooling towers regulate temperature by dissipating heat from recirculating water used to cool chillers, air-conditioning equipment, or other process equipment. Heat is rejected from the tower primarily through evaporation. Therefore, by design, cooling towers consume significant amounts of water. Overview The thermal efficiency and longevity of the cooling tower and equipment used to cool depend on the proper management of water recirculated through the tower. Water leaves a cooling tower system in any one of four ways: Evaporation: This is the primary function of the tower and is the method that transfers heat from the cooling tower system to the

84

Noise from cooling towers of power parks  

SciTech Connect

A study is presented of the noise pollution problem for large power parks proposed for the future. Such parks might have an area of about 75 sq. miles, and a generating capacity up to 48000 MW. A comparative analysis has been done for natural and mechanical-draft wet towers as the major sources of acoustic power. Noise radiation from single isolated towers as well as from a dispersed array of towers has been considered for both types of cooling systems. Major noise attenuation effects considered are due to the atmospheric absorption and A- weighting. Conditions of 60F and 70 percent relative humidity in a still atmosphere have been assumed. (auth)

Zakaria, J.; Moore, F.K.

1975-10-14T23:59:59.000Z

85

NACP Site Data Set Published  

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

Site Data Set Published The ORNL DAAC is pleased to announce the release of a data set from the North American Carbon Program (NACP): NACP Site: Tower Meteorology, Flux...

86

Cooling Towers--Energy Conservation Strategies  

E-Print Network (OSTI)

A cooling water system can be optimized by operating the cooling tower at the highest possible cycles of concentration without risking sealing and fouling of heat exchanger surfaces, tube bundles, refrigeration equipment, overhead condensers, and other associates heat rejection equipment.

Matson, J.

1991-06-01T23:59:59.000Z

87

On thermal performance of seawater cooling towers  

E-Print Network (OSTI)

Seawater cooling towers have been used since the 1970s in power generation and other industries, so as to reduce the consumption of freshwater. The salts in seawater are known to create a number of operational problems, ...

Sharqawy, Mostafa H.

88

Cooling Tower Considerations for Energy Optimizations  

E-Print Network (OSTI)

Energy conservation strategies and production economies involve more than examining the cooling tower fan consumption of horse power. Colder water provides vast potentials for savings. Ask yourself, "What is the dollar and energy utilization value if I can obtain 1F colder water off my cooling tower than I am now getting?" Therefore, let us first examine the elements of the cooling tower to determine the areas of greatest potential improvement to generate that colder water. The air flow generated by the fan should first be looked at In both counterflow or crossflow towers to determine that maximum flow is available through pitching fans up to within the motor plate amperage limitations and fan stall point calculations. If applicable, new fiberglass state of the art fans can be installed and additional motor horse power added. However, the most dramatic improvement that can be obtained in producing colder water is to retrofit modern film fill to replace the old fashioned wood splash bar slats.

Burger, R.

1986-01-01T23:59:59.000Z

89

Advanced wet-dry cooling tower concept  

E-Print Network (OSTI)

The purpose of this years' work has been to test and analyze the new dry cooling tower surface previously developed. The model heat transfer test apparatus built last year has been instrumented for temperature, humidity ...

Snyder, Troxell Kimmel

90

CFD MODELING ANALYSIS OF MECHANICAL DRAFT COOLING TOWER  

Science Conference Proceedings (OSTI)

Industrial processes use mechanical draft cooling towers (MDCT's) to dissipate waste heat by transferring heat from water to air via evaporative cooling, which causes air humidification. The Savannah River Site (SRS) has a MDCT consisting of four independent compartments called cells. Each cell has its own fan to help maximize heat transfer between ambient air and circulated water. The primary objective of the work is to conduct a parametric study for cooling tower performance under different fan speeds and ambient air conditions. The Savannah River National Laboratory (SRNL) developed a computational fluid dynamics (CFD) model to achieve the objective. The model uses three-dimensional steady-state momentum, continuity equations, air-vapor species balance equation, and two-equation turbulence as the basic governing equations. It was assumed that vapor phase is always transported by the continuous air phase with no slip velocity. In this case, water droplet component was considered as discrete phase for the interfacial heat and mass transfer via Lagrangian approach. Thus, the air-vapor mixture model with discrete water droplet phase is used for the analysis. A series of the modeling calculations was performed to investigate the impact of ambient and operating conditions on the thermal performance of the cooling tower when fans were operating and when they were turned off. The model was benchmarked against the literature data and the SRS test results for key parameters such as air temperature and humidity at the tower exit and water temperature for given ambient conditions. Detailed results will be presented here.

Lee, S; Alfred Garrett, A; James02 Bollinger, J; Larry Koffman, L

2008-03-03T23:59:59.000Z

91

Four LBA-ECO Data Sets Released  

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

These data sets are from These data sets are from the Carbon Dynamics Team and report research results from the km 83 logged forest tower site, Tapajos National Forest, Brazil. LBA-ECO CD-04 Leaf Area Index, km 83 Tower Site, Tapajos National Forest, Brazil . Data set prepared by M. Figueira, C.A.D. de Sousa, M. Menton, R.N. Juarez, H.R. da Rocha, S.D. Miller, and M.L. Goulden. This data set reports on leaf area determination utilizing a computer scanner and image processing software. LBA-ECO CD-04 Biomass Survey, km 83 Tower Site, Tapajos National Forest, Brazil . Data set prepared by M. Menton, M. Figueira, C.A.D. de Sousa, S.D. Miller, H.R. da Rocha, and M.L.Goulden. This data set contains the results of a biometric tree survey of a 19.25 ha area adjacent to the eddy flux tower at the km 83 logged forest tower site.

92

FILES- COOLING TOWER PLUME MODELING  

E-Print Network (OSTI)

Ladies and Gentlemen:? In the referenced letter, Progress Energy Carolinas, Inc. (PEC) noted that the input and output' files for the modeling analysis for cooling tower plumes would be provided under a separate cover. due to the requirements for native file submittal (see NRC RAI # 5.3.3.1-1 and PGN RAI # H-295). The purpose of this letter is to submit these calculation native files. The supplemental information contained in the files on the attached CD is provided to support the NRC's review of the Shearon Harris Nuclear Power Plant Units 2 and 3 (HAR) Environmental Report (ER), but does not comply with the requirements for electronic submission in the NRC Guidance Document. The NRC staff requested the files be submitted in their native formats, required for utilization in the software employed to support the ER development. As discussed with the NRC's environmental project manager responsible for review of the HAR ER, the data provided on the attached CD are of a nature that is not easily convertible to PDF output files. Furthermore, PEC understands that converting the information to PDF output files; would not serve the underlying purpose of the submittal; i.e., to provide the raw, unprocessed data to enable reviewers to evaluate software used in the HAR application. Enclosure 1 provides a list of folders with the requested data files that are included on the attached CD (Attachment 5.3.3.1-1 SACTI Native Files). If you have any further questions, or need additional information, please contact Bob Kitchen at

Garry D. Mi Er

2009-01-01T23:59:59.000Z

93

STRATOSPHERE TOWER, LAS VEGAS NEVADA  

Science Conference Proceedings (OSTI)

... Water supply is from two pumps at street level which pump up to the pod. There is on- site water storage within the pod and two additional pumps ...

2013-05-01T23:59:59.000Z

94

Calder Hall Cooling Tower Demolition: Landmark Milestone for Decommissioning at Sellafield  

Science Conference Proceedings (OSTI)

September 2007 saw a very visible change to the Sellafield site following the culmination of a major decommissioning project; the demolition of the four Calder Hall cooling towers. A key part of the UK's nuclear industrial heritage, Calder Hall, the world's first commercial nuclear power station, was opened by Her Majesty Queen Elizabeth II in October 1953 and continued to generate electricity until its closure in 2003. Following the decision to decommission the Calder Hall site, explosive demolition was identified as the safest and most cost effective route for the removal of the towers. The technique, involving the placement of explosive in 60% of the circumference of both shell and legs, is a tried and tested method which had already been used successfully in more than 200 cooling towers in the UK in the last 30 years. The location and composition of the four 88 metre high towers also created additional challenges. Situated only 40 metres away from the UK's only nuclear Fuel Handling Plant, as well as other sensitive structures on the Sellafield site, the project had to address the impact of a number of key areas, including dust, ground vibration and air over pressure, to ensure that the demolition could be carried out safely and without significant impact on other operational areas on the site. At the same time, the towers had to be prepared for demolition in a way that minimised the amounts of radioactive or hazardous waste materials arising. This paper follows the four year journey from the initial decision to demolish the towers right through to the demolition itself as well as the clean up of the site post demolition. It will also consider the massive programme of work necessary not only to carry out the physical work safely but also to gain regulatory confidence and stakeholder support to carry out the project successfully. In summary: The demolition of the four Calder Hall cooling towers was a highly visible symbol of the changes that are occurring on the Sellafield site as it moves forward towards a decommissioning future. Although in itself the demolition was both straightforward and standard, the various complexities posed by the towers situation at Sellafield introduced an entirely new element to the project, with a number of complex challenges which had to be overcome or resolved before the demolition could take place. It is a testament to the skill and dedication of the project team and its associated contractors that the project was delivered safely and successfully without a single accident, injury or event throughout the entire four years, and with minimal impact on both site operations and the local community. (authors)

Williamson, E.J. [Nuclear Decommissioning and Major Projects Group, Sellafield Ltd, Seascale, Cumbria (United Kingdom)

2008-07-01T23:59:59.000Z

95

Microsoft Word - CX-Marion and Sand Springs Substation Towers Revised.doc  

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

KEC-4 KEC-4 SUBJECT: Environmental Clearance Memorandum Dave Tripp Project Manager - TEP-CSB-1 Proposed Action: Marion and Sand Springs Substations Radio Tower Projects Budget Information: Work Orders 00243411 and 00243190; Task 3 Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B1.19 Siting, construction, and operation of microwave and radio communication towers and associated facilities... Location: Marion and Deschutes counties, Oregon Proposed by: Bonneville Power Administration (BPA) Description of the Proposed Action: BPA proposes to install new radio towers at the Marion Substation and Sand Springs Substation communication sites in Oregon. BPA must vacate radio frequencies in the 1710-1755MHz band to comply with a Federal law mandating reallocation of

96

High Flux Isotopes Reactor (HFIR) Cooling Towers Demolition Waste Management  

SciTech Connect

This paper describes the results of a joint initiative between Oak Ridge National Laboratory, operated by UT-Battelle, and Bechtel Jacobs Company, LLC (BJC) to characterize, package, transport, treat, and dispose of demolition waste from the High Flux Isotope Reactor (HFIR), Cooling Tower. The demolition and removal of waste from the site was the first critical step in the planned HFIR beryllium reflector replacement outage scheduled. The outage was scheduled to last a maximum of six months. Demolition and removal of the waste was critical because a new tower was to be constructed over the old concrete water basin. A detailed sampling and analysis plan was developed to characterize the hazardous and radiological constituents of the components of the Cooling Tower. Analyses were performed for Resource Conservation and Recovery Act (RCRA) heavy metals and semi-volatile constituents as defined by 40 CFR 261 and radiological parameters including gross alpha, gross beta, gross gamma, alpha-emitting isotopes and beta-emitting isotopes. Analysis of metals and semi-volatile constituents indicated no exceedances of regulatory limits. Analysis of radionuclides identified uranium and thorium and associated daughters. In addition 60Co, 99Tc, 226Rm, and 228Rm were identified. Most of the tower materials were determined to be low level radioactive waste. A small quantity was determined not to be radioactive, or could be decontaminated. The tower was dismantled October 2000 to January 2001 using a detailed step-by-step process to aid waste segregation and container loading. The volume of waste as packaged for treatment was approximately 1982 cubic meters (70,000 cubic feet). This volume was comprised of plastic ({approx}47%), wood ({approx}38%) and asbestos transite ({approx}14%). The remaining {approx}1% consisted of the fire protection piping (contaminated with lead-based paint) and incidental metal from conduit, nails and braces/supports, and sludge from the basin. The waste, except for the asbestos, was volume reduced via a private contract mechanism established by BJC. After volume reduction, the waste was packaged for rail shipment. This large waste management project successfully met cost and schedule goals.

Pudelek, R. E.; Gilbert, W. C.

2002-02-26T23:59:59.000Z

97

Wet cooling towers: rule-of-thumb design and simulation  

DOE Green Energy (OSTI)

A survey of wet cooling tower literature was performed to develop a simplified method of cooling tower design and simulation for use in power plant cycle optimization. The theory of heat exchange in wet cooling towers is briefly summarized. The Merkel equation (the fundamental equation of heat transfer in wet cooling towers) is presented and discussed. The cooling tower fill constant (Ka) is defined and values derived. A rule-of-thumb method for the optimized design of cooling towers is presented. The rule-of-thumb design method provides information useful in power plant cycle optimization, including tower dimensions, water consumption rate, exit air temperature, power requirements and construction cost. In addition, a method for simulation of cooling tower performance at various operating conditions is presented. This information is also useful in power plant cycle evaluation. Using the information presented, it will be possible to incorporate wet cooling tower design and simulation into a procedure to evaluate and optimize power plant cycles.

Leeper, S.A.

1981-07-01T23:59:59.000Z

98

Wind Turbine Towers Establish New Height Standards and Reduce Cost of Wind Energy  

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

Case study that summarizes the Wind Tower Systems and its Space Frame tower. Describes their new wind tower design and explains how DOE funding made this possible.

99

Best Practice for Energy Efficient Cleanrooms: Cooling tower and condenser water optimization  

E-Print Network (OSTI)

Efficient Cleanrooms: Cooling Tower and Condenser WaterEfficient Cleanrooms: Cooling tower and condenser water2 Cooling tower and condenser water

Xu, Tengfang

2005-01-01T23:59:59.000Z

100

Best Practice for Energy Efficient Cleanrooms: Cooling tower and condenser water optimization  

E-Print Network (OSTI)

Cleanrooms: Cooling Tower and Condenser Water OptimizationCleanrooms: Cooling tower and condenser water optimization2 Cooling tower and condenser water

Xu, Tengfang

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tower site tapajos" 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

Radio Towers Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Radio Towers Geothermal Area Radio Towers Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Radio Towers 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 (0) 10 References Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"TERRAIN","zoom":6,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"300px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.03666667,"lon":-115.4566667,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

102

Wind Profiler and RASS Measurements Compared with Measurements from a 450-m-Tall Tower  

Science Conference Proceedings (OSTI)

A 915-MHz boundary layer wind profiler with radio acoustic sounding system (RASS) was sited 8 km from a very tall (450 m) television transmitting tower in north-central Wisconsin during the spring, summer, and autumn of 1995. The profiler ...

Wayne M. Angevine; Peter S. Bakwin; Kenneth J. Davis

1998-06-01T23:59:59.000Z

103

NSA-Beaver Pond Site  

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

Beaver Pond Site (NSA-BP) Beaver Pond Site (NSA-BP) The storage tent and gas collectors NSA-BP site looking to the east. Visible is the investigator hut on drier land to the west and the boardwalk leading out to the tower site in the right portion of the image with the mounded beaver lodge visible in the middle of the image. The bridge and the 3 meter flux tower The beaver lodge The bridge from the flux tower This is the floating bridge leading from the flux tower back to the shore. The large tent for holding equipment is clearly visible on the shore. The TGB gas collectors on the beaver pond Back to the BOREAS Photo Page Index Other Sites: NSA Photos ||NSA-BP Photos | NSA-Fen Photos | NSA-OA Photos | NSA-OBS Photos | NSA-OJP Photos | NSA-UBS Photos | NSA-YJP Photos | NSA-Ops Photos

104

Broadwind Energy Formerly Tower Tech Holdings | Open Energy Information  

Open Energy Info (EERE)

Broadwind Energy Formerly Tower Tech Holdings Broadwind Energy Formerly Tower Tech Holdings Jump to: navigation, search Name Broadwind Energy (Formerly Tower Tech Holdings) Place Manitowoc, Wisconsin Zip 54221-1957 Sector Wind energy Product US-based manufacturer of wind turbine towers, turbine assemblies such as nacelles, and monopiles. References Broadwind Energy (Formerly Tower Tech Holdings)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Broadwind Energy (Formerly Tower Tech Holdings) is a company located in Manitowoc, Wisconsin . References ↑ "Broadwind Energy (Formerly Tower Tech Holdings)" Retrieved from "http://en.openei.org/w/index.php?title=Broadwind_Energy_Formerly_Tower_Tech_Holdings&oldid=343059"

105

Wind Turbine Towers Establish New Height Standards and Reduce...  

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

Wind Turbine Towers Establish New Height Standards and Reduce Cost of Wind Energy Wind Turbine Towers Establish New Height Standards and Reduce Cost of Wind Energy Case study that...

106

BOREAS SSA-YJP Tower Flux Data Revised  

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

Tower Flux Data Revised A revised version of the BOREAS TF04 tower flux data is now available from the ORNL DAAC. Data providers have revised the data set entitled "BOREAS TF-04...

107

Optimal sequencing of a cooling tower with multiple cells  

E-Print Network (OSTI)

This paper evaluates the energy savings potential of multi-cell cooling tower optimal sequencing control methods. Annual tower fan energy usage is calculated for a counter-flow tower with multiple variable-speed fans. Effectiveness-NTU tower model is employed to predict the cooling tower performance at various conditions. Natural convection when the fan is off is accounted by using an assumed airflow rate. The energy savings at five cities representing different typical climates are studied using typical meteorological year data. The results show that, if the tower capacity can be increased by 50% and 100% by running extra tower cells, the annual total fan power usage can be reduced by 44% and 61%, respectively. A cumulative saving percent curve is generated to help estimate the annual total savings percent when extra cooling tower capacity is available during only part of a year.

Zhang, Z.; Liu, J.

2012-01-01T23:59:59.000Z

108

Cooling Towers, The Neglected Energy Resource  

E-Print Network (OSTI)

Loving care is paid to the compressors, condensers, and computer programs of refrigeration systems. When problems arise, operator: run around in circles with expensive "fixes", but historically ignore the poor orphan, the cooling tower perched on the roof or located somewhere in the backyard. When the cooling water is too hot, high temperature cut-outs occur and more energy must be provided to the motors to maintain the refrigeration cycle. Cooling Towers: 1) . . . are just as important a link in the chain as the other equipment, 2) ... are an important source of energy conservation, 3) ... can be big money makers, and 4 ) .. . operators should be aware of the potential of maximizing cold water. Most towers designed over 20 years ago were inefficiently engineered due to cheap power and the "low bidder" syndrome. Operating energy costs were ignored and purchasing criteria was to award the contract to the lowest bidder. This paper investigates internal elements of typical towers, delineates their functions and shows how to upgrade them in the real world for energy savings and profitability of operation.

Burger, R.

1985-01-01T23:59:59.000Z

109

Cooling Towers, The Neglected Energy Resource  

E-Print Network (OSTI)

Loving care is paid to the compressors, condensers, and computer programs of refrigeration and air conditioning systems. When problems arise, operators and engineers run around in circles with expensive "fixes" , but historically ignore the poor orphan of the system, the cooling tower perched on the roof or located somewhere in the backyard. When cooling water is too hot, high temperature cut-outs occur and more energy must be provided to the motors to maintain the refrigeration cycle. Cooling towers: 1) are just as important a link in the chain as the other equipment; 2) are an important source of energy conservation; 3) can be big money makers; 4) operators should be aware of the potential of maximising cold water. Most towers were designed over 20 years ago and were inefficiently engineered due to cheap power and the "low bidder gets the sale" syndrome. Operating energy costs were ignored and purchasing criteria was to award the contract to the lowest bidder. All too often the low bidder - even though some of the most respected firms were involved - cut thermal corners for the sale. This paper investigates the internal elements of the typical types of cooling towers currently used, delineates their functions and shows how to upgrade them in the real world for energy savings and profitability of operation. Hard before and after statistics of costs and profits obtained through optimization of colder water by engineered thermal upgrading will be discussed. Salient points will be reenforced with on-the-job, hands-on, slides and illustrations.

Burger, R.

1987-09-01T23:59:59.000Z

110

Untapped Energy Savings from Cooling Towers  

E-Print Network (OSTI)

A cooling tower is often an overlooked source of easy energy savings. As long as it's running not much thought is usually given to it, but when numbers are applied to how much a degree of colder water is worth it can become a valuable and ready source of energy and monetary savings. Many of these savings can come from simple maintenance or by changing the way the tower is operated. The more dramatic savings can come from changing to advanced fill concepts. Over our 40 years of working in the cooling tower industry we have measured the effects of doing simple maintenance, the effects of blocking air flow with seemingly good ideas like maintenance walkways, the effects of nearby heat sources, and what fill changes are likely to get. We have put numbers to what a degree is worth to a large petrochemical company so you can get an idea of the magnitude of what these sometimes simple changes are actually worth. Also, we've included a way to monitor your tower for changes in performance.

Phelps Jr., P.

2011-01-01T23:59:59.000Z

111

Wastewater Reuse as Cooling-Tower Makeup  

Science Conference Proceedings (OSTI)

As many parts of the United States begin to face shortages, utilities will look for reliable new water sources. Focusing on the use of wastewater as makeup to cooling towers, this report describes commercially available wastewater treatments for power plant applications and highlights the need for research to control biologic slime and phosphate scale formation.

1987-09-02T23:59:59.000Z

112

REMOTE INTERVENTION TOWER ELIMINATION SYSTEM  

SciTech Connect

This Topical Report is presented to satisfy reporting requirements in the Statement of work section J.5 page 120 per Department of Energy contract DE-AC26-01NT41093. The project does not contain any imperial research data. This report describes the assembly of Commercial off the shelf (COTS) items configured in a unique manner to represent new and innovative technology in the service of size reduction and material handling at DOE sites, to assist in the D&D effort currently underway at the designated DOE Facilities.

Dave Murnane; Renauld Washington

2002-02-15T23:59:59.000Z

113

Wind Turbine Towers Establish New Height Standards and Reduce Cost of Wind Energy  

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

Wind Tower Systems to develop the Wind Tower Systems to develop the Space Frame tower, a new concept for wind turbine towers. Instead of a solid steel tube, the Space Frame tower consists of a highly optimized design of five custom-shaped legs and interlaced steel struts. With this design, Space Frame towers can support turbines at greater heights, yet weigh and cost less than traditional steel tube towers. Wind Tower Systems LLC (now

114

Surface and Tower Meteorological Instrumentation at NSA Handbook - January 2006  

SciTech Connect

The Surface and Tower Meteorological Instrumentation at Atqasuk (METTWR2H) uses mainly conventional in situ sensors to measure wind speed, wind direction, air temperature, dew point and humidity mounted on a 10-m tower. It also obtains barometric pressure, visibility, and precipitation data from sensors at or near the base of the tower. In addition, a Chilled Mirror Hygrometer is located at 1 m for comparison purposes. Temperature and relative humidity probes are mounted at 2 m and 5 m on the tower. For more information, see the Surface and Tower Meteorological Instrumentation at Atqasuk Handbook.

MT Ritsche

2006-01-30T23:59:59.000Z

115

Concentrating Solar Power Tower System Basics | Department of Energy  

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

Concentrating Solar Power Tower System Basics Concentrating Solar Power Tower System Basics Concentrating Solar Power Tower System Basics August 20, 2013 - 5:06pm Addthis In power tower concentrating solar power systems, numerous large, flat, sun-tracking mirrors, known as heliostats, focus sunlight onto a receiver at the top of a tall tower. A heat-transfer fluid heated in the receiver is used to generate steam, which, in turn, is used in a conventional turbine generator to produce electricity. Some power towers use water/steam as the heat-transfer fluid. Other advanced designs are experimenting with molten nitrate salt because of its superior heat-transfer and energy-storage capabilities. Individual commercial plants can be sized to produce up to 200 megawatts of electricity. Illustration of a power tower power plant. Sunlight is shown reflecting off a series of heliostats surrounding the tower and onto the receiver at the top of the tower. The hot heat-transfer fluid exiting from the receiver flows down the tower, into a feedwater reheater, and then into a turbine, which generates electricity that is fed into the power grid. The cool heat-transfer fluid exiting the turbine flows into a steam condenser to be cooled and sent back up the tower to the receiver.

116

SunShot Initiative: Brayton Cycle Baseload Power Tower  

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

Brayton Cycle Baseload Power Brayton Cycle Baseload Power Tower to someone by E-mail Share SunShot Initiative: Brayton Cycle Baseload Power Tower on Facebook Tweet about SunShot Initiative: Brayton Cycle Baseload Power Tower on Twitter Bookmark SunShot Initiative: Brayton Cycle Baseload Power Tower on Google Bookmark SunShot Initiative: Brayton Cycle Baseload Power Tower on Delicious Rank SunShot Initiative: Brayton Cycle Baseload Power Tower on Digg Find More places to share SunShot Initiative: Brayton Cycle Baseload Power Tower on AddThis.com... Concentrating Solar Power Systems Components Competitive Awards CSP Research & Development Thermal Storage CSP Recovery Act Baseload CSP SunShot Multidisciplinary University Research Initiative CSP Heat Integration for Baseload Renewable Energy Deployment

117

Side Stream Filtration for Cooling Towers  

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

Side Stream Filtration Side Stream Filtration for Cooling Towers Prepared for the U.S. Department of Energy Federal Energy Management Program By Pacific Northwest National Laboratory X. Duan, J.L. Williamson, K.L McMordie Stoughton and B.K. Boyd October 2012 FEDERAL ENERGY MANAGEMENT PROGRAM i Contact Will Lintner, PE Federal Energy Management Program U.S. Department of Energy 1000 Independence Ave. SW Washington, DC 20585-0121 Phone: (202) 586-3120 E-mail: william.lintner@ee.doe.gov Cover photo: Cooling Towers. Photo from Pacific Northwest National Laboratory ii Acknowledgements The authors of the report would like to thank the following individuals that provided support to

118

Wet/dry cooling tower and method  

DOE Patents (OSTI)

A wet/dry cooling tower wherein a liquid to-be-cooled is flowed along channels of a corrugated open surface or the like, which surface is swept by cooling air. The amount of the surface covered by the liquid is kept small compared to the dry part thereof so that said dry part acts as a fin for the wet part for heat dissipation.

Glicksman, Leon R. (Lynnfield, MA); Rohsenow, Warren R. (Waban, MA)

1981-01-01T23:59:59.000Z

119

Update: Cooling tower and spray pond technology  

SciTech Connect

The 9th Cooling Tower and Spray Pond Symposium, under the auspices of the International Association for Hydraulic Research, took place at the von Karman Institute for Fluid Dynamics, Belgium, in September 1994. Technical topics discussed included cooling system design, performance, operation, environmental effects, modeling and components. Symposium proceedings will not be published. However, information of primary interest to staffs of power plants in the United States is summarized in this article.

Bartz, J.A.

1995-05-01T23:59:59.000Z

120

Predict particle collection in spray towers  

SciTech Connect

Spray tower wet scrubbers are used for control of particulates (as well as gaseous pollutants). The author has found that in cocurrent spray scrubbers, the most important parameter in determining particle collection efficiency is inlet dust particle size, followed by (in decreasing order of importance) gas velocity, collector droplet size, liquid-to-gas ratio, and length of scrubber. In countercurrent scrubbers, the most important parameters are collector droplet size, liquid-to-gas ratio, length of scrubber, and gas velocity. Note that some of these factors are directly related to collection, and some are related indirectly. This article provides equations, based on theoretical considerations and empirical data, for predicting particle collection efficiencies. The parameter ranges covered are typical of those encountered in the practical operation of conventional spray towers that use a ``cool`` (or cooled) inlet gas stream, so the equations are applicable to many industrial spray tower systems. The results are limited based on the ranges of the parameters evaluated, and while it may be possible to extrapolate beyond that, this has not been verified. (The initial model was for a flue-gas desulfurization system at a large power station that requires both particulate removal and SO{sub 2} absorption.)

Hesketh, H.E. [Southern Illinois Univ., Carbondale, IL (United States)

1995-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "tower site tapajos" 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

A Microcomputer Model of Crossflow Cooling Tower Performance  

E-Print Network (OSTI)

The energy use characteristics of evaporative cooling towers are of interest because, although such towers are widely used in industry, they do require a substantial amount of energy. Evaporative cooling towers are basically large heat exchangers that use both sensible heat transfer and mass transfer to cool. The heat and mass transfer process for a crossflow cooling tower has been modeled on an Apple II microcomputer. Various heat loads or weather conditions can be imposed on a given tower to evaluate its response; moreover, a subprogram can evaluate pressure drop and motor/fan characteristics. Determination of the energy required to operate the tower enables its performance to be compared against energy-saving operations such as variable speed drive or changes in fill height or type.

Reichelt, G. E; Jones, J. W.

1984-01-01T23:59:59.000Z

122

Vortex-augmented cooling tower-windmill combination  

DOE Patents (OSTI)

A cooling tower for cooling large quantities of effluent water from a production facility by utilizing natural wind forces includes the use of a series of helically directed air inlet passages extending outwardly from the base of the tower to introduce air from any direction in a swirling vortical pattern while the force of the draft created in the tower makes it possible to place conventional power generating windmills in the air passages to provide power as a by-product.

McAllister, Jr., John E. (Aiken, SC)

1985-01-01T23:59:59.000Z

123

Competitive Landscape of Mobile Telecommunications Tower Companies in India  

Science Conference Proceedings (OSTI)

With the entry of 3G and WiMAX players, the Indian mobile subscriber base is expected to reach 1110 million by the end of 2015. To meet mobile infrastructure demand, India will require approximately 350,000 to 400,000 mobile telecommunications towers ... Keywords: Business Models, Infrastructure Sharing, Joint Venture Companies, Mobile Network Operators MNO, Mobile Telecommunication Tower Valuation, Mobile Telecommunications Towers, Telecommunication Circles

N.P. Singh

2010-01-01T23:59:59.000Z

124

Solar power tower development: Recent experiences  

DOE Green Energy (OSTI)

Recent experiences with the 10 MW{sub e} Solar Two and the 2.5 MW{sub t} TSA (Technology Program Solar Air Receiver) demonstration plants are reported. The heat transfer fluids used in these solar power towers are molten-nitrate salt and atmospheric air, respectively. Lessons learned and suggested technology improvements for next-generation plants are categorized according to subsystem. The next steps to be taken in the commercialization process for each these new power plant technologies is also presented.

Tyner, C.; Kolb, G.; Prairie, M. [and others

1996-12-01T23:59:59.000Z

125

H-FACET: Alignment Tool for Power Tower Heliostats  

H-FACET: Alignment Tool for Power Tower Heliostats ... for the U.S. Department of Energys National Nuclear Security Administration. SAND # 2011-4640P

126

California Code of Regulations, Title 8, Section 1646. Tower...  

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

Subchapter 4. Construction Safety Orders Article 22. Scaffolds--Various Types New query 1646. Tower Scaffolds and Rolling Scaffolds, Wood or Metal. (a) The minimum...

127

Comparative evaluation of cooling tower drift eliminator performance  

E-Print Network (OSTI)

The performance of standard industrial evaporative cooling tower drift eliminators is analyzed using experiments and numerical simulations. The experiments measure the

Chan, Joseph Kwok-Kwong

128

The Damaging Effects of Earthquake Excitation on Concrete Cooling Towers  

SciTech Connect

Reinforced concrete cooling towers of hyperbolic shell configuration find widespread application in utilities engaged in the production of electric power. In design of critical civil infrastructure of this type, it is imperative to consider all the possible loading conditions that the cooling tower may experience, an important loading condition in many countries is that of the earthquake excitation, whose influence on the integrity and stability of cooling towers is profound. Previous researches have shown that the columns supporting a cooling tower are sensitive to earthquake forces, as they are heavily loaded elements that do not possess high ductility, and understanding the behavior of columns under earthquake excitation is vital in structural design because they provide the load path for the self weight of the tower shell. This paper presents the results of a finite element investigation of a representative 'dry' cooling tower, using realistic horizontal and vertical acceleration data obtained from the recent and widely-reported Tabas, Naghan and Bam earthquakes in Iran. The results of both linear and nonlinear analyses are reported in the paper, the locations of plastic hinges within the supporting columns are identified and the ramifications of the plastic hinges on the stability of the cooling tower are assessed. It is concluded that for the (typical) cooling tower configuration analyzed, the columns that are instrumental in providing a load path are influenced greatly by earthquake loading, and for the earthquake data used in this study the representative cooling tower would be rendered unstable and would collapse under the earthquake forces considered.

Abedi-Nik, Farhad [SADRA Institute of Higher Education, Tehran (Iran, Islamic Republic of); Sabouri-Ghomi, Saeid [K.N.T University of Technology, Tehran (Iran, Islamic Republic of)

2008-07-08T23:59:59.000Z

129

Application of upspray type water distribution systems in cooling towers  

SciTech Connect

The efficient and uniform distribution of the warm circulating water on to the filling of cooling towers has been the continuing goal of the tower designer. The final element in the water distribution system, the sprayer, plays an important role in achieving this objective. This paper discusses the performance and operational characteristics of a sprayer utilized in counterflow towers that directs the water leaving the sprayer nozzle in an upward direction and briefly compares its performance with that of downward sprayers. The discussion also covers relative tower economics and application data of the sprayer.

Fay, H.P.; Hesse, G.

1985-01-01T23:59:59.000Z

130

Spray tower: the workhorse of flue-gas desulfurization  

Science Conference Proceedings (OSTI)

A recently developed spray tower system for use in a utility flue gas desulfurization system is simple, durable, and capable of achieving very high sulfur dioxide removal efficiencies, possibly approaching 100%. The principles behind the design and operation of the spray tower are discussed. The quality of water used for washing, tower size limitations, construction materials liquid distribution, gas-inlet design, gas distribution, mass transfer, and operating characteristics are examined. Procedures to maintain the reliability and high performance of the spray tower are described. (5 diagrams, 5 photos, 12 references, 1 table)

Saleem, A.

1980-10-01T23:59:59.000Z

131

Lattice Tower Design of Offshore Wind Turbine Support Structures.  

E-Print Network (OSTI)

??Optimal design of support structure including foundation and turbine tower is among the most critical challenges for offshore wind turbine. With development of offshore wind (more)

Gong, W.

2011-01-01T23:59:59.000Z

132

THE STEEL TOWER: A 21st CENTURY TALL BUILDING.  

E-Print Network (OSTI)

?? This paper outlines the need for a new mixed use high-rise project for the commercial business district of Pittsburgh, Pennsylvania. The proposed tower combines (more)

Duke, Peter Guldenshuh

2013-01-01T23:59:59.000Z

133

Out of Ashes and Rubble: The Pirelli Tower  

E-Print Network (OSTI)

tower was novel, experimental architecture because it was the first skyscraper to be built in Italy; it was an extremely tall

Ziegler, Claudia J.

2009-01-01T23:59:59.000Z

134

Performance evaluation of natural draught cooling towers with anisotropic fills.  

E-Print Network (OSTI)

??ENGLISH ABSTRACT: In the design of a modern natural draught wet-cooling tower (NDWCT), structural and performance characteristics must be considered. Air flow distortions and resistances (more)

Reuter, Hanno Carl Rudolf

2010-01-01T23:59:59.000Z

135

Evaluation and performance enhancement of cooling tower spray zones.  

E-Print Network (OSTI)

??ENGLISH ABSTRACT: The performance of wet cooling towers can be improved by installing spray nozzles that distribute the cooling water uniformly onto the fill whilst (more)

Roux, Daniel

2012-01-01T23:59:59.000Z

136

Evaluation and performance prediction of cooling tower spray zones.  

E-Print Network (OSTI)

??Cooling tower spray nozzle performance characteristics such as the water distribution onto the fill material, air side pressure drop, pump head, drop size distribution and (more)

Viljoen, D. J.

2006-01-01T23:59:59.000Z

137

Evaluation and performance prediction of cooling tower rain zones.  

E-Print Network (OSTI)

??Cooling tower rain zone performance characteristics such as the loss coefficient and the Merkel number are evaluated and simulated. To this end the influence of (more)

Pierce, Darren John

2007-01-01T23:59:59.000Z

138

CFD MODELING AND ANALYSIS FOR A-AREA AND H-AREA COOLING TOWERS  

Science Conference Proceedings (OSTI)

Mechanical draft cooling towers are designed to cool process water via sensible and latent heat transfer to air. Heat and mass transfer take place simultaneously. Heat is transferred as sensible heat due to the temperature difference between liquid and gas phases, and as the latent heat of the water as it evaporates. Mass of water vapor is transferred due to the difference between the vapor pressure at the air-liquid interface and the partial pressure of water vapor in the bulk of the air. Equations to govern these phenomena are discussed here. The governing equations are solved by taking a computational fluid dynamics (CFD) approach. The purpose of the work is to develop a three-dimensional CFD model to evaluate the flow patterns inside the cooling tower cell driven by cooling fan and wind, considering the cooling fans to be on or off. Two types of the cooling towers are considered here. One is cross-flow type cooling tower located in A-Area, and the other is counterflow type cooling tower located in H-Area. The cooling tower located in A-Area is mechanical draft cooling tower (MDCT) consisting of four compartment cells as shown in Fig. 1. It is 13.7m wide, 36.8m long, and 9.4m high. Each cell has its own cooling fan and shroud without any flow communications between two adjacent cells. There are water distribution decks on both sides of the fan shroud. The deck floor has an array of about 25mm size holes through which water droplet falls into the cell region cooled by the ambient air driven by fan and wind, and it is eventually collected in basin area. As shown in Fig. 1, about 0.15-m thick drift eliminator allows ambient air to be humidified through the evaporative cooling process without entrainment of water droplets into the shroud exit. The H-Area cooling tower is about 7.3 m wide, 29.3 m long, and 9.0 m high. Each cell has its own cooling fan and shroud, but each of two corner cells has two panels to shield wind at the bottom of the cells. There is some degree of flow communications between adjacent cells through the 9-in gap at the bottom of the tower cells as shown in Fig. 2. Detailed geometrical dimensions for the H-Area tower configurations are presented in the figure. The model was benchmarked and verified against off-site and on-site test results. The verified model was applied to the investigation of cooling fan and wind effects on water cooling in cells when fans are off and on. This report will discuss the modeling and test results.

Lee, S.; Garrett, A.; Bollinger, J.

2009-09-02T23:59:59.000Z

139

Hydraulic Cooling Tower Driver- The Innovation  

E-Print Network (OSTI)

One of the weaknesses of present day cooling tower drives are fan wrecks caused by shaft couplings breaking, gear box malfunctions due to inadequate lubrication, gear tooth wear, and inaccessibility for inspection and routine maintenance. The hydro-drive eliminates these items from the drive train and puts the same electric motor HP at ground level close coupled to a hydraulic pump, filters, and oil reservoir. Hydraulic lines bring oil pressure to the hydraulic motor, which is more than 75% less weight than comparable gear boxes and presents a smooth practically trouble free performance. In this three cell installation, the original 75 horsepower motors and 18 diameter fans were cooling a total of 14,000 GPM which were CTI tested and 74.7% of capability. The upgrading and retrofit consisted of installing at ground level 100 horse power motors, 22 diameter fans, 14 high velocity recovery fan cylinders, V PVC splash bars, and high efficiency cellular drift eliminators. Testing after completion indicated a 92% tower now circulating 21,000 GPM instead of the original 14,000.

Dickerson, J. A.

1987-09-01T23:59:59.000Z

140

The cyclic multi-peg Tower of Hanoi  

Science Conference Proceedings (OSTI)

Variants of the classical Tower of Hanoi problem evolved in various directions. Allowing more than 3 pegs, and imposing limitations on the possible moves among the pegs, are two of these. Here, we deal with the case of h?3 pegs arranged on ... Keywords: Multi-peg tower of Hanoi

Daniel Berend; Amir Sapir

2006-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "tower site tapajos" 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

2009 EPRI Cooling Tower Technology Seminar and Symposium  

Science Conference Proceedings (OSTI)

Cooling towers and associated systems cause significant loss of availability and heat rate degradation in both nuclear and fossil-fired power plants. Twenty-five papers presented at a 2009 conference in Cincinnati, Ohio discussed industrial experience and provided case histories of cooling tower problems and solutions.

2009-10-05T23:59:59.000Z

142

Modification of the Colony Tower for the RIO BLANCO detonation  

SciTech Connect

The tower is a 180-ft tall steel-frame experimental oil shale processing retort structure with heavy process equipment on various levels. The structural response of the tower to the ground motion from Project Rio Blanco is analyzed and the necessary structural modifications described. (TFD)

Blume, J.A.; Lee, L.A.; Freeman, S.A.; Honda, K.K.

1974-04-30T23:59:59.000Z

143

Refrigerant Phase-Change Stirling-Cycle Solar Power Towers  

Science Conference Proceedings (OSTI)

This paper firstly introduces the principles of Refrigerant Phase-Change Stirling-Cycle solar power towers This heat engines use solar reservoire. When the refrigerant in an engine cylinder absorbs heat from high-temperature heat sources, refrigerant ... Keywords: refrigerant phase-change cycle, heat engines, solar power tower, finite-time thermodynamics

Dezhong Huang

2011-01-01T23:59:59.000Z

144

Experiment Study on Tower Cooling Energy-Saving Technology  

Science Conference Proceedings (OSTI)

During the transition season periods the technology of tower cooling is used to cool the internal heat source region in the buildings, which is energy saving and environment friendly technology. To aim at climatic conditions of the transition season ... Keywords: towers cooling, experiments, fluence factors, energy saving

Ji Amin; He Li; Yue Zhiqiang; Jie Li; Gang Yin; Zhang Qinggang

2011-02-01T23:59:59.000Z

145

NSA-Old Jack Pine Site  

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

NSA-OJP) Aerial view of the NSA-OJP site during IFC 2. The Rohn tower and investigator hut are in the approximate center of the image with the generator hut at the extreme upper...

146

Best Practices for Energy Efficient Cleanrooms: Cooling Tower and Condenser Water Optimization  

E-Print Network (OSTI)

LBNL-58634 Best Practices for Energy Efficient Cleanrooms: Cooling Tower and Condenser Water Efficient Cleanrooms: Cooling tower and condenser water optimization Tengfang Xu Contents HVAC WATER SYSTEMS.............................................................................................. 2 Cooling tower and condenser water optimization

147

Hydrogen Storage in Wind Turbine Towers: Design Considerations; Preprint  

DOE Green Energy (OSTI)

The paramount considerations associated with a hydrogen tower are corrosion (in the form of hydrogen embrittlement) and structural failure (through bursting or fatigue life degradation). Although hydrogen embrittlement (HE) requires more research and experimentation, it does not appear to prohibit the use of turbine towers for hydrogen storage. Furthermore, the structural modifications required to store hydrogen in a tower are technically feasible. We discovered that hydrogen towers have a''crossover pressure'' at which their critical mode of failure crosses over from fatigue to bursting. The crossover pressure for many turbine towers is between 10 and 15 atm. The cost of hydrogen storage per unit of storage capacity is lowest near the crossover pressure. Above the crossover pressure, however, storage costs rise quickly.

Kottenstette, R.; Cotrell, J.

2003-09-01T23:59:59.000Z

148

Conversion Tower for Dispatchable Solar Power: High-Efficiency Solar-Electric Conversion Power Tower  

Science Conference Proceedings (OSTI)

HEATS Project: Abengoa Solar is developing a high-efficiency solar-electric conversion tower to enable low-cost, fully dispatchable solar energy generation. Abengoas conversion tower utilizes new system architecture and a two-phase thermal energy storage media with an efficient supercritical carbon dioxide (CO2) power cycle. The company is using a high-temperature heat-transfer fluid with a phase change in between its hot and cold operating temperature. The fluid serves as a heat storage material and is cheaper and more efficient than conventional heat-storage materials, like molten salt. It also allows the use of a high heat flux solar receiver, advanced high thermal energy density storage, and more efficient power cycles.

None

2012-01-11T23:59:59.000Z

149

Tower reactors for bioconversion of lignocellulosic material  

DOE Patents (OSTI)

An apparatus for enzymatic hydrolysis and fermentation of pretreated lignocellulosic material, in the form of a tower bioreactor, having mixers to achieve intermittent mixing of the material. Precise mixing of the material is important for effective heat and mass transfer requirements without damaging or denaturing the enzymes or fermenting microorganisms. The pretreated material, generally in the form of a slurry, is pumped through the bioreactor, either upwards of downwards, and is mixed periodically as it passes through the mixing zones where the mixers are located. For a thin slurry, alternate mixing can be achieved by a pumping loop which also serves as a heat transfer device. Additional heat transfer takes place through the reactor heat transfer jackets.

Nguyen, Quang A. (16458 W. 1st Ave., Golden, CO 80401)

1998-01-01T23:59:59.000Z

150

Tower reactors for bioconversion of lignocellulosic material  

DOE Patents (OSTI)

An apparatus for enzymatic hydrolysis and fermentation of pretreated lignocellulosic material, in the form of a tower bioreactor, having mixers to achieve intermittent mixing of the material. Precise mixing of the material is important for effective heat and mass transfer requirements without damaging or denaturing the enzymes or fermenting microorganisms. The pretreated material, generally in the form of a slurry, is pumped through the bioreactor, either upwards or downwards, and is mixed periodically as it passes through the mixing zones where the mixers are located. For a thin slurry, alternate mixing can be achieved by a pumping loop which also serves as a heat transfer device. Additional heat transfer takes place through the reactor heat transfer jackets.

Nguyen, Quang A. (16458 W. 1st Ave., Golden, CO 80401)

1999-01-01T23:59:59.000Z

151

Tower reactors for bioconversion of lignocellulosic material  

DOE Patents (OSTI)

An apparatus is described for enzymatic hydrolysis and fermentation of pretreated lignocellulosic material, in the form of a tower bioreactor, having mixers to achieve intermittent mixing of the material. Precise mixing of the material is important for effective heat and mass transfer requirements without damaging or denaturing the enzymes or fermenting microorganisms. The pretreated material, generally in the form of a slurry, is pumped through the bioreactor, either upwards or downwards, and is mixed periodically as it passes through the mixing zones where the mixers are located. For a thin slurry, alternate mixing can be achieved by a pumping loop which also serves as a heat transfer device. Additional heat transfer takes place through the reactor heat transfer jackets. 5 figs.

Nguyen, Q.A.

1999-03-30T23:59:59.000Z

152

Tower reactors for bioconversion of lignocellulosic material  

DOE Patents (OSTI)

An apparatus is disclosed for enzymatic hydrolysis and fermentation of pretreated lignocellulosic material. The apparatus consists of a tower bioreactor which has mixers to achieve intermittent mixing of the material. Precise mixing of the material is important for effective heat and mass transfer requirements without damaging or denaturing the enzymes or fermenting microorganisms. The pretreated material, generally in the form of a slurry, is pumped through the bioreactor, either upwards or downwards, and is mixed periodically as it passes through the mixing zones where the mixers are located. For a thin slurry, alternate mixing can be achieved by a pumping loop which also serves as a heat transfer device. Additional heat transfer takes place through the reactor heat transfer jackets. 5 figs.

Nguyen, Q.A.

1998-03-31T23:59:59.000Z

153

Cooling Towers: Understanding Key Components of Cooling Towers and How to Improve Water Efficiency  

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

Paul Johnston-Knight Introduction Federal laws and regulations require Federal agencies to reduce water use and improve water efficiency. Namely, Executive Order 13514 Federal Leadership in Environmental, Energy, and Economic Performance, requires an annual two percent reduction of water use intensity (water use per square foot of building space) for agency potable water consumption as well as a two percent reduction of water use for industrial, landscaping, and agricultural applica- tions. Cooling towers can be a significant

154

Cooling Towers--Energy Conservation Strategies Preservative Spray Treatment Maintains Cooling Tower  

E-Print Network (OSTI)

Several problems common to most industrial wood framed cooling towers can be easily controlled with annual preservative spray treatment applications to the plenum area framework and drift eliminators. It eliminates the expensive periodic repairs due to wood decay which sooner or later will occur without preservative protection. Preventing or minimizing the destructive effect of internal wood decay of the framework also avoids unexpected down time due to emergency maintenance or unexpected collapse of the main supporting framework.

Reidenback, R.

1991-06-01T23:59:59.000Z

155

Property:CoolingTowerWaterUseWinterConsumed | Open Energy Information  

Open Energy Info (EERE)

search Property Name CoolingTowerWaterUseWinterConsumed Property Type Number Description Cooling Tower Water use (winter average) (afday) Consumed. Retrieved from "http:...

156

Property:CoolingTowerWaterUseSummerConsumed | Open Energy Information  

Open Energy Info (EERE)

Name CoolingTowerWaterUseSummerConsumed Property Type Number Description Cooling Tower Water use (summer average) (afday) Consumed. Retrieved from "http:en.openei.orgw...

157

Property:CoolingTowerWaterUseAnnlAvgConsumed | Open Energy Information  

Open Energy Info (EERE)

Name CoolingTowerWaterUseAnnlAvgConsumed Property Type Number Description Cooling Tower Water use (annual average) (afday) Consumed. Retrieved from "http:en.openei.orgw...

158

Property:CoolingTowerWaterUseSummerGross | Open Energy Information  

Open Energy Info (EERE)

Property Name CoolingTowerWaterUseSummerGross Property Type Number Description Cooling Tower Water use (summer average) (afday) Gross. Retrieved from "http:en.openei.orgw...

159

Purification of water from cooling towers and other heat exchange systems  

SciTech Connect

The amount of silica in cooling tower water is reduced by passing cooling tower water through a column of silica gel.

Sullivan; Enid J. (Los Alamos, NM), Carlson; Bryan J. (Ojo Caliente, NM), Wingo; Robert M. (Los Alamos, NM), Robison; Thomas W. (Stilwell, KS)

2012-08-07T23:59:59.000Z

160

Dynamic analysis of guyed towers subjected to wind loads incorporating nonlinearity of the guys.  

E-Print Network (OSTI)

??Guyed masts are unique civil engineering structures, structurally efficient, selfsupporting lattice towers. High structural efficiency of guyed towers is achieved by the use of pre-tensioned (more)

Kaul, Rohit

1999-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tower site tapajos" 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

Performance evaluation of wet-cooling tower fills with computational fluid dynamics.  

E-Print Network (OSTI)

??ENGLISH ABSTRACT: A wet-cooling tower fill performance evaluation model developed by Reuter is derived in Cartesian coordinates for a rectangular cooling tower and compared to (more)

Gudmundsson, Yngvi

2012-01-01T23:59:59.000Z

162

Verification survey report of the south waste tank farm training/test tower and hazardous waste storage lockers at the West Valley demonstration project, West Valley, New York  

Science Conference Proceedings (OSTI)

A team from ORAU's Independent Environmental Assessment and Verification Program performed verification survey activities on the South Test Tower and four Hazardous Waste Storage Lockers. Scan data collected by ORAU determined that both the alpha and alpha-plus-beta activity was representative of radiological background conditions. The count rate distribution showed no outliers that would be indicative of alpha or alpha-plus-beta count rates in excess of background. It is the opinion of ORAU that independent verification data collected support the site?s conclusions that the South Tower and Lockers sufficiently meet the site criteria for release to recycle and reuse.

Weaver, Phyllis C.

2012-08-29T23:59:59.000Z

163

VERIFICATION SURVEY REPORT OF THE SOUTH WASTE TANK FARM TRAINING/TEST TOWER AND HAZARDOUS WASTE STORAGE LOCKERS AT THE WEST VALLEY DEMONSTRATION PROJECT WEST VALLEY, NEW YORK  

SciTech Connect

A team from ORAUs Independent Environmental Assessment and Verification Program performed verification survey activities on the South Test Tower and four Hazardous Waste Storage Lockers. Scan data collected by ORAU determined that both the alpha and alpha-plus-beta activity was representative of radiological background conditions. The count rate distribution showed no outliers that would be indicative of alpha or alpha-plus-beta count rates in excess of background. It is the opinion of ORAU that independent verification data collected support the sites conclusions that the South Tower and Lockers sufficiently meet the site criteria for release to recycle and reuse.

Phyllis C. Weaver

2012-08-29T23:59:59.000Z

164

Power Tower Technology Roadmap and cost reduction plan.  

DOE Green Energy (OSTI)

Concentrating solar power (CSP) technologies continue to mature and are being deployed worldwide. Power towers will likely play an essential role in the future development of CSP due to their potential to provide dispatchable solar electricity at a low cost. This Power Tower Technology Roadmap has been developed by the U.S. Department of Energy (DOE) to describe the current technology, the improvement opportunities that exist for the technology, and the specific activities needed to reach the DOE programmatic target of providing competitively-priced electricity in the intermediate and baseload power markets by 2020. As a first step in developing this roadmap, a Power Tower Roadmap Workshop that included the tower industry, national laboratories, and DOE was held in March 2010. A number of technology improvement opportunities (TIOs) were identified at this workshop and separated into four categories associated with power tower subsystems: solar collector field, solar receiver, thermal energy storage, and power block/balance of plant. In this roadmap, the TIOs associated with power tower technologies are identified along with their respective impacts on the cost of delivered electricity. In addition, development timelines and estimated budgets to achieve cost reduction goals are presented. The roadmap does not present a single path for achieving these goals, but rather provides a process for evaluating a set of options from which DOE and industry can select to accelerate power tower R&D, cost reductions, and commercial deployment.

Mancini, Thomas R.; Gary, Jesse A. (U.S. Department of Energy); Kolb, Gregory J.; Ho, Clifford Kuofei

2011-04-01T23:59:59.000Z

165

Experimental Investigation of the Padding Tower for Air Dehumidifier  

E-Print Network (OSTI)

Air conditioning with all fresh air is founded on the principle of dehumidifying by liquid desiccant. It has the characteristics of being clean, power-saving, easy to operate, and requiring low-grade heat. It is suitable for applying waste heat, and solar power as the heat source for regeneration. Hence, this system has a great latent potential for energy savings and environmental protection. The system chooses the padding tower as a dehumidifier and regenerator, which are often used in petrochemical industry. The system chooses a padding tower as a dehumidifier, and LiCl-Water as a liquid desiccant. The vapor in the air is absorbed by the spray of the LiCl solution, and then the absorbed vapor will be released by heating the absorbent. These processes form the circle of absorptive refrigeration operating in atmospheric pressure. This paper describes studies on the theory and experiment of the padding tower of the dehumidifying air conditioning, including selecting different padding and measuring the speed of the air flow and the solution flow and the pressure drop between the layers of the padding. The experimental and computational results indicate that the design parameters of the padding tower significantly influence the characteristics of the liquid desiccant air conditioning. Of these design parameters, the framework of the padding tower, ratio of the air and the concentration of the inlet solution is largest through the tower, the temperature and effects of the dehumidifying capability of the tower.

Wang, J.; Liu, J.; Li, C.; Zhang, G.; An, S.

2006-01-01T23:59:59.000Z

166

Use of nanofiltration to reduce cooling tower water consumption.  

Science Conference Proceedings (OSTI)

Nanofiltration (NF) can effectively treat cooling-tower water to reduce water consumption and maximize water usage efficiency of thermoelectric power plants. A pilot is being run to verify theoretical calculations. A side stream of water from a 900 gpm cooling tower is being treated by NF with the permeate returning to the cooling tower and the concentrate being discharged. The membrane efficiency is as high as over 50%. Salt rejection ranges from 77-97% with higher rejection for divalent ions. The pilot has demonstrated a reduction of makeup water of almost 20% and a reduction of discharge of over 50%.

Altman, Susan Jeanne; Ciferno, Jared

2010-10-01T23:59:59.000Z

167

Use of nanofiltration to reduce cooling tower water usage.  

SciTech Connect

Nanofiltration (NF) can effectively treat cooling-tower water to reduce water consumption and maximize water usage efficiency of thermoelectric power plants. A pilot is being run to verify theoretical calculations. A side stream of water from a 900 gpm cooling tower is being treated by NF with the permeate returning to the cooling tower and the concentrate being discharged. The membrane efficiency is as high as over 50%. Salt rejection ranges from 77-97% with higher rejection for divalent ions. The pilot has demonstrated a reduction of makeup water of almost 20% and a reduction of discharge of over 50%.

Sanchez, Andres L.; Everett, Randy L.; Jensen, Richard Pearson; Cappelle, Malynda A.; Altman, Susan Jeanne

2010-09-01T23:59:59.000Z

168

NREL National Wind Technology Center (NWTC): M2 Tower; Boulder, Colorado (Data)  

DOE Data Explorer (OSTI)

The National Wind Technology Center (NWTC), located at the foot of the Rocky Mountains near Boulder, Colorado, is a world-class research facility managed by NREL for the U.S. Department of Energy. NWTC researchers work with members of the wind energy industry to advance wind power technologies that lower the cost of wind energy through research and development of state-of-the-art wind turbine designs. NREL's Measurement and Instrument Data Center provides data from NWTC's M2 tower which are derived from instruments mounted on or near an 82 meter (270 foot) meteorological tower located at the western edge of the NWTC site and about 11 km (7 miles) west of Broomfield, and approximately 8 km (5 miles) south of Boulder, Colorado. The data represent the mean value of readings taken every two seconds and averaged over one minute. The wind speed and direction are measured at six heights on the tower and air temperature is measured at three heights. The dew point temperature, relative humidity, barometric pressure, totalized liquid precipitation, and global solar radiation are also available.

Jager, D.; Andreas, A.

169

A virtual tall tower network for understanding continental sources and sinks of CO2  

SciTech Connect

Our understanding of the North American terrestrial carbon cycle is limited by both a lack of continental atmospheric CO2 data, and by a need for methods to interpret these and other continental data with confidence. In response to this challenge a rapid expansion of the N. American carbon cycle observational network is underway. This expansion includes a network of continuous, continental CO2 mixing ratio observations being collected at a subset of AmeriFlux towers. Progress in developing this resource includes instrument development, site installation, calibration and intercalibration efforts, and initiation of a uniform data product. Progess in applying these data include proposed methods for interpreting surface layer measurements in atmospheric inversions (the virtual tall towers approach), examination of coherence patterns in continental mixing ratios in response to weather and climate, and application of these mixing ratio measurements in formal atmospheric inversions. Future work will merge these methods with interpretation of flux towers observations of terrestrial carbon fluxes in an effort to create a single coherent diagnosis of North American terrestrial carbon fluxes over a multi-year period.

Davis, K.J.; Richardson, S.J.; Miles, N.L.

2007-03-09T23:59:59.000Z

170

American Tower Company | Open Energy Information  

Open Energy Info (EERE)

Company Company Jump to: navigation, search Name American Tower Company Address P.O. Box 29 Place Shelby, Ohio Zip 44875 Sector Wind energy Product Agriculture;Business and legal services; Energy audits/weatherization; Engineering/architectural/design; Manufacturing; Retail product sales and distribution Phone number 419-347-1185 Website http://www.amertower.com Coordinates 40.8814452°, -82.6618424° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.8814452,"lon":-82.6618424,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

171

The Tower Shielding Facility: Its glorious past  

Science Conference Proceedings (OSTI)

The Tower Shielding Facility (TSF) is the only reactor facility in the US that was designed and built for radiation-shielding studies in which both the reactor source and shield samples could be raised into the air to allow measurements to be made without interference from ground scattering or other spurious effects. The TSF proved its usefulness as many different programs were successfully completed. It became active in work for the Defense Atomic Support Agency (DASA) Space Nuclear Auxiliary Power, Defense Nuclear Agency, Liquid Metal Fast Breeder Reactor Program, the Gas-Cooled and High-Temperature Gas-Cooled Reactor programs, and the Japanese-American Shielding Program of Experimental Research, just to mention a few of the more extensive ones. The history of the TSF as presented in this report describes the various experiments that were performed using the different reactors. The experiments are categorized as to the programs which they supported and placed in corresponding chapters. The experiments are described in modest detail, along with their purpose when appropriate. Discussion of the results is minimal, but references are given to more extensive topical reports.

Muckenthaler, F.J.

1997-05-07T23:59:59.000Z

172

Don Ana Sun Tower Solar Power Plant | Open Energy Information  

Open Energy Info (EERE)

Don Ana Sun Tower Solar Power Plant Don Ana Sun Tower Solar Power Plant Jump to: navigation, search Name Don Ana Sun Tower Solar Power Plant Facility Don Ana Sun Tower Sector Solar Facility Type Concentrating Solar Power Developer NRG Energy/eSolar Location Dona Ana County, New Mexico Coordinates 32.485767°, -106.7234639° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":32.485767,"lon":-106.7234639,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

173

Alpine SunTower Solar Power Plant | Open Energy Information  

Open Energy Info (EERE)

SunTower Solar Power Plant SunTower Solar Power Plant Jump to: navigation, search Name Alpine SunTower Solar Power Plant Facility Alpine SunTower Sector Solar Facility Type Concentrating Solar Power Developer NRG Energy/eSolar Location Lancaster, California Coordinates 34.6867846°, -118.1541632° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":34.6867846,"lon":-118.1541632,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

174

Meteorological Tower Measurements of a Surface Cold Front  

Science Conference Proceedings (OSTI)

measurements from the Boulder Atmospheric Observatory meteorological research tower are used to describe the structure and physical processes of a strong surface cold front. Analysis reveals that the horizontal gradients in temperature and wind ...

M. A. Shapiro

1984-08-01T23:59:59.000Z

175

Advanced Lighting Controls - My Venture from the Ivory Tower  

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

Advanced Lighting Controls - My Venture from the Ivory Tower Speaker(s): Charlie Huizenga Date: June 15, 2012 - 12:00pm Location: 90-3122 Seminar HostPoint of Contact: Dragan...

176

Offshore Tower Shading Effects on In-Water Optical Measurements  

Science Conference Proceedings (OSTI)

A field campaign was performed to estimate the shading effect induced on in-water irradiance and radiance measurements taken in the immediate vicinity of the Acqua Alta Oceanographic Tower (AAOT), located in the northern Adriatic Sea, which is ...

Giuseppe Zibordi; John Piero Doyle; Stanford B. Hooker

1999-11-01T23:59:59.000Z

177

Power Tower Systems for Concentrating Solar Power | Department...  

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

known as heliostats, focus sunlight onto a receiver at the top of a tall tower. A heat-transfer fluid heated in the receiver is used to generate steam, which, in turn, is...

178

Introducing an Online Cooling Tower Performance Analysis Tool  

E-Print Network (OSTI)

Cooling towers are used extensively for numerous industrial, residential, and commercial applications. Yet despite how common their uses, operators often do not know how to properly evaluate and optimize their performance. This is due to the complex and variable nature of all of the factors that can influence performance; fan speed, wind speed, sump temperature, heat load, ambient temperature, relative humidity, etc. This can be overwhelming for a regular operator resulting in many cooling towers being set to a default operating condition and forgotten. This paper will introduce a web-based cooling tower analysis tool being developed to help users understand and optimize operational efficiency. The calculations, evaluations, and models will be discussed in detail to highlight important design considerations and issues. This will include how the Merkel Theory, psychometric properties, tower types, and historical weather data are incorporated into the analysis.

Muller, M.R.; Muller, M.B.; Rao, P.

2012-01-01T23:59:59.000Z

179

User's Manual: Cooling-Tower-Plume Prediction Code  

Science Conference Proceedings (OSTI)

Utilities planning to build generating plants that use evaporative cooling are required to estimate potential seasonal and annual environmental effects of cooling-tower plumes. An easy-to-use computerized method is now available for making such estimates.

1984-04-01T23:59:59.000Z

180

DRIFT : a numerical simulation solution for cooling tower drift eliminator performance  

E-Print Network (OSTI)

A method for the analysis of the performance of standard industrial evaporative cooling tower drift

Chan, Joseph Kwok-Kwong

Note: This page contains sample records for the topic "tower site tapajos" 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

Best Practice for Energy Efficient Cleanrooms: Cooling tower and condenser water optimization  

E-Print Network (OSTI)

condenser water optimization Tengfang Xu Contents HVAC WATERHVAC Water Systems Cooling tower and condenser water optimization

Xu, Tengfang

2005-01-01T23:59:59.000Z

182

NSA-Old Black Spruce Site  

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

NSA-OBS) NSA-OBS) The NSA-OBS site from the air. This aerial shot of the OBS site shows the generator in the lower-right corner, one of the huts in the upper-left corner, and part of the boardwalk leading away from the hut. View an aerial photo-map of the NSA-OBS site. OBS spruce trees and flux tower The road to the OBS site. The road to the OBS site was often a muddy mess, accessable only by ARGO all-terrain vehicles, and even they got stuck often. The OBS flux tower The NSA black spruce carbon model evaluation site and TE canopy access tower. Oblique view of the trail leading into the NSA Old Black Spruce site. Highway 391 is beyond the image at the bottom and the power line is viewable at the top of the image. The NSA-OBS site would be off to the upper left. The NSA-OBS Rohn tower where Amar Bazzaz of Harvard University is climbing the tower for maintenance.

183

Cooling Tower Optimization Study Technical Update for 2012  

Science Conference Proceedings (OSTI)

This report is a technical update on the progress of testing three different configurations of cooling tower fan drives. The particular focus is upon the gear box where most disabling failures are occurring. It will describe the configurations and instrumentation used to track the ongoing operational conditions being monitored.The standard mode of operation for a cooling tower fan motor is either on or off, as it may be cost-effective to take some cells out of service under certain ...

2012-12-20T23:59:59.000Z

184

International cooling-tower and spray pond symposium  

Science Conference Proceedings (OSTI)

This document contains the manuscripts of sixty-one papers that were presented at the 7th Cooling Tower and Spray Pond Symposium of the International Association for Hydraulic Research, organized by the B.E. Vedeneev Institute (VNIIG) and held in Leningrad, USSR, in June 1990. This report represents a worldwide state-of-the-art survey of recent work on cooling towers and spray ponds. Individual papers are indexed separately on the energy database.

Not Available

1990-09-01T23:59:59.000Z

185

Environmental Impacts from the Operation of Cooling Towers at SRP  

SciTech Connect

An assessment has been made of the environmental effects that would occur from the operation of cooling towers at the SRP reactors. A more realistic numerical model of the cooling tower plume has been used to reassess the environmental impacts. The following effects were considered: (1) the occurrence of fog and ice and their impact on nearby structures, (2) drift and salt deposition from the plume, (3) the length and height of the visible plume, and (4) the possible dose from tritium.

Smith, F.G. III

2001-06-26T23:59:59.000Z

186

Cooling-tower rebuild, treatment overhaul halt fouling  

SciTech Connect

Partial fixes over a period of time were insufficient to meet cooling requirements at this four-tower powerplant. The eventual remedy involved complete fill replacement and chemistry-program revision. Cooling-tower performance hinges on many factors. Assuming the proper water and air distribution and unhindered operation of spray nozzles, pumps, valves, etc, fill design is the key element. However, a decade of experience at Keystone station (operated by Pennsylvania Electric Co for a consortium of East Coast utilities) showed that more than just changing to a fouling-resistant fill was required to provide and maintain design performance. As described in this article, careful analysis, revision, and continuous monitoring of the chemical water-treatment program were needed as well. At each of Keystone's two units, two natural-draft, hyperbolic towers provide cooling for main-condenser circulating water and service water. The 325-ft-tall towers are counter-current flow, and measure 247 ft across the basin. Film-type fill originally installed in the towers consisted of assemblies of fiber-cement board, 9 ft deep in the center and 7 ft in the peripheral regions. Fiber-cement was also the construction material used in the drift eliminators, and in the piping connected to concrete distribution flumes within the towers.

Gall, G.P.

1993-02-01T23:59:59.000Z

187

SSA Mixed Canopy Site  

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

Mixed Canopy Site (SSA-Mix) Mixed Canopy Site (SSA-Mix) The TE canopy tower The mixed trees Terrestrial Ecology canopy access tower at the SSA mixed coniferous/deciduous site. A picture taken looking down from the TE canopy access tower at the SSA mixed auxiliary site, showing the aspen and spruce canopies. Back to the BOREAS Photo Page Index Other Sites: NSA Photos ||NSA-BP Photos | NSA-Fen Photos | NSA-OA Photos | NSA-OBS Photos | NSA-OJP Photos | NSA-UBS Photos | NSA-YJP Photos | NSA-Ops Photos SSA Photos || SSA-Airport Photos | SSA-Fen Photos | SSA-Mix Photos | SSA-OA Photos | SSA-OBS Photos | SSA-OJP Photos | SSA-YA Photos | SSA-YJP Photos | SSA-Ops Photos | ORNL DAAC Home || ORNL Home || NASA || Privacy, Security, Notices || Data Citation || Rate Us || Help | User Services - Tel: +1 (865) 241-3952 or E-mail: uso@daac.ornl.gov

188

NSA-Fen Site  

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

NSA-Fen) NSA-Fen) The Fen from the air, looking North. You can see the boardwalk, the hut, and the size of the bog. The road (Highway 391) is visible at the top. The round "crater" near the base of the boardwalk on the right is a collapsed palsa. View an aerial photo-map of the NSA-Fen site. The ground cover on the Fen itself The hut and flux tower The Fen site from the shore looking toward the hut The Fen site flux tower The boardwalk in the Fen, looking back at the shore The generator shed and the storage tent The NSA-Fen site from the air during IFC-2. Top of image is to Southeast. The NSA-Fen site in September (IFC-3) 1994 looking to the southeast. The tower is at the end of the boardwalk in right center of image with the hut near the center. The boardwalk connects to the far border at left center of the slide. Note that the tamarack (deciduous evergreen) within the fen has its fall colors.

189

Session: What have studies of communications towers suggested regarding the impact of guy wires and lights on birds and bats  

DOE Green Energy (OSTI)

This session at the Wind Energy and Birds/Bats workshop consisted of one presentation followed by a discussion/question and answer period. The paper ''Wind turbines and Avian Risk: Lessons from Communications Towers'' was given by Paul Kerlinger. The presenter outlined lessons that have been learned from research on communications (not cell) towers and about the impacts of guy wires and lights on birds and bats and how they could be useful to wind energy developers. The paper also provided specific information about a large 'fatality' event that occurred at the Mountaineer, WC wind energy site in May 2003, and a table of Night Migrant Carcass search findings for various wind sites in the US.

Kerlinger, Paul

2004-09-01T23:59:59.000Z

190

FINAL REPORT: EDDY-COVARIANCE FLUX TOWER AND TRACER TECHNOLOGY SUPPORT FOR THE UNIVERSITY OF GEORGIA PROPOSAL: FROM TOWER TO PIXEL: INTEGRATION OF PATCH-SIZE NEE USING EXPERIMENTAL MODELING FOOTPRINT ANALYSIS.  

SciTech Connect

Brookhaven National Laboratory has been funded since October of 2000 to provide assistance to the University of Georgia in conducting footprint analyses of individual towers based on meteorology and trace gas measurements. Brookhaven researchers conducted air flow measurements using perfluorocarbon tracers and meteorological instrumentation for three experimental campaigns at an AmeriFlux research site maintained by Dr. Monique Leclerc near Gainesville, FL. In addition, BNL provided assistance with remote data collection and distribution from remote field sites operated by Dr. John Hom of the US Forest Service in the Pine Barrens of New Jersey and at FACE research sites in North Carolina and Wisconsin.

LEWIN,K.F.; NAGY, J.; WATSON, T.B.

2007-09-01T23:59:59.000Z

191

Analysis of mass transfer performance in an air stripping tower  

Science Conference Proceedings (OSTI)

The carryover of working solution in a traditional stripping tower is of serious concern in real applications. A U-shaped spray tower to prevent carryover has been designed to study the stripping of water vapor from aqueous desiccant solutions of 91.8 to 95.8 wt% triethylene glycol. In this study, water vapor was removed from the diluted desiccant solution by heating the solution and stripping it with the ambient air. Therefore, the solution was concentrated to a desired concentration. This spray tower was capable of handling air flow rates from 3.2 to 5.13 kg/min and liquid flow rates from 1.6 to 2.76 kg/min. Since the literature data on air stripping towers are limited, studies on the mass transfer coefficient and other mass transfer parameters were carried out in this study. Under the operating conditions, the overall mass transfer coefficient calculated from the experimental data varied from 0.053 to 0.169 mol/m{sup 3}{center{underscore}dot}s. These corresponded to heights of a transfer unit of 2.3 to 0.71 m, respectively. The rates of stripping in this spray tower were typically varied from 2.28 to 12.15 kg H{sub 2}O/h. A correlation of the mass transfer coefficient for the air stripping process was also developed in this study.

Chung, T.W.; Lai, C.H.; Wu, H.

1999-10-01T23:59:59.000Z

192

Integrated reactor-containment hyperbolic-cooling-tower system  

Science Conference Proceedings (OSTI)

A preliminary feasibility analysis has been conducted to evaluate placing a nuclear reactor containment building inside a large hyperbolic cooling tower, a concept previously suggested for fossil-fired units but for reasons other than those that motivate this evaluation. The geometry of the design, the amount of water available, and the shielding provided by the cooling tower are beneficial to the safety characteristics of the containment under accident conditions. Three means of decay heat management are employed: an initial water spray on the containment exterior, long-term air convection on side of the containment, and creation of a water pool inside the containment. A continuously spraying water tank on top of the containment allows for a completely passive decay heat removal system. An annular air chimney around the containment is effective in long-term removal of {approximately} 1O MW (thermal) through air convection. Five percent of the water inventory in the cooling-tower pond surrounding the containment is sufficient to flood the containment interior to a depth of 14.6 ft, thereby providing an internal containment heat sink. The packing and the height of the tower provide major scrubbing and dispersing sources for any uncontrolled radioactive leak. The cooling tower veil also protects the containment from external events such as lane crashes.

Patel, A.R.; Todreas, N.E.; Driscoll, M.J. [Massachusetts Institute of Technology, Cambridge, MA (United States)

1994-12-31T23:59:59.000Z

193

Energy Efficiency Evaluation of Guangzhou West Tower Faade System  

E-Print Network (OSTI)

Guangzhou West Tower is an extremely tall public building. The energy efficiency evaluation of its faade should be different than that of ordinary public buildings. Based on the national code GB50189-2005, Design Standard for Energy efficiency of Public Buildings, typical meteorological yearly data for Guangzhou were used and revised according to architectural character of Guangzhou West Tower. The energy efficiency design of a single skin faade and active airflow curtain wall was analyzed by a dynamic energy simulation tool and modified weather data. The payback period of initial investment in the faade system was evaluated based on simulation results. In addition, the results confirm the faade system scheme of Guangzhou West Tower.

Meng, Q.; Zhang, L.

2006-01-01T23:59:59.000Z

194

Cooling Towers - Energy Conservation and Money Making Mechanisms  

E-Print Network (OSTI)

The utilization of colder water conserves energy, creates profits, increases product output. In an effort to obtain greater efficiencies and conserve both energy and dollars, all too many engineers neglect the potential of the cooling tower. Many cooling towers in operation are performing at levels as low as 50% of capability. This is energy wasteful and financially foolish. There are many reasons for this deficiency, among them the present service is greater than the original requirements, slippage due to age and deterioration, or the installation could have been originally installed undersized. This paper will investigate the various elements, their functions and methods of upgrading their performance by retrofit with the use of modern technology. Case histories will be examined in three major industries, chemicals, refrigeration and petrochemical illustrating how intelligent rebuilding can produce profits and conserve energy. Actual statistics will be cited showing that the return of investment (ROI) can be quite rapid by optimizing the performance of the cooling tower.

Burger, R.

1981-01-01T23:59:59.000Z

195

Conversion of Solar Two to a Kokhala hybrid power tower  

DOE Green Energy (OSTI)

The continued drop in energy prices and restructuring of the utility industry have reduced the likelihood that a follow-on commercial 100-MW, power tower project will be built immediately following the Solar Two demonstration project. Given this, it would be desirable to find a way to extend the life of the Solar Two project to allow the plant to operate as a showcase for future power tower projects. This paper looks at the possibility of converting Solar Two into a commercial Kokhala hybrid power tower plant at the end of its demonstration period in 1998. The study identifies two gas turbines that could be integrated into a Kokhala cycle at Solar Two and evaluates the design, expected performance, and economics of each of the systems. The study shows that a commercial Kokhala project at Solar Two could produce power at a cost of less than 7 e/kWhr.

Price, H.W.

1997-06-01T23:59:59.000Z

196

AUTOMATED DEAD-END ULTRAFILTRATION FOR ENHANCED SURVEILLANCE OF LEGIONELLA 2 PNEUMOPHILA AND LEGIONELLA SPP. IN COOLING TOWER WATERS  

DOE Green Energy (OSTI)

Detection of Legionella pneumophila in cooling towers and domestic hot water systems involves concentration by centrifugation or membrane filtration prior to inoculation onto growth media or analysis using techniques such as PCR or immunoassays. The Portable Multi-use Automated Concentration System (PMACS) was designed for concentrating microorganisms from large volumes of water in the field and was assessed for enhancing surveillance of L. pneumophila at the Savannah River Site, SC. PMACS samples (100 L; n = 28) were collected from six towers between August 2010 and April 2011 with grab samples (500 ml; n = 56) being collected before and after each PMACS sample. All samples were analyzed for the presence of L. pneumophila by direct fluorescence immunoassay (DFA) using FITC-labeled monoclonal antibodies targeting serogroups 1, 2, 4 and 6. QPCR was utilized for detection of Legionella spp. in the same samples. Counts of L. pneumophila from DFA and of Legionella spp. from qPCR were normalized to cells/L tower water. Concentrations were similar between grab and PMACS samples collected throughout the study by DFA analysis (P = 0.4461; repeated measures ANOVA). The same trend was observed with qPCR. However, PMACS concentration proved advantageous over membrane filtration by providing larger volume, more representative samples of the cooling tower environment, which led to reduced variability among sampling events and increasing the probability of detection of low level targets. These data highlight the utility of the PMACS for enhanced surveillance of L. pneumophila by providing improved sampling of the cooling tower environment.

Brigmon, R.; Leskinen, S.; Kearns, E.; Jones, W.; Miller, R.; Betivas, C.; Kingsley, M.; Lim, D.

2011-10-10T23:59:59.000Z

197

Technical Evaluation of Side Stream Filtration for Cooling Towers  

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

Cooling Towers (photo from Pacific Cooling Towers (photo from Pacific Northwest National Laboratory) * Scaling: Scaling is the precipitation of dissolved mineral components that have become saturated in solution, which can lower efficiency of the system. * Fouling: Fouling occurs when suspended particles or biologic growth forms an insulating film on heat transfer surfaces. Common foulants include organic matter, process oils, and silt, which can also lower system performance. * Microbiological Activity: Microbiological activity refers to microorganisms that live and grow in the cooling system that can contribute

198

Technical Evaluation of Side Stream Filtration for Cooling Towers  

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

Cooling Towers (photo from Pacific Cooling Towers (photo from Pacific Northwest National Laboratory) * Scaling: Scaling is the precipitation of dissolved mineral components that have become saturated in solution, which can lower efficiency of the system. * Fouling: Fouling occurs when suspended particles or biologic growth forms an insulating film on heat transfer surfaces. Common foulants include organic matter, process oils, and silt, which can also lower system performance. * Microbiological Activity: Microbiological activity refers to microorganisms that live and grow in the cooling system that can contribute

199

Solar Two: A successful power tower demonstration project  

DOE Green Energy (OSTI)

Solar Two, a 10MWe power tower plant in Barstow, California, successfully demonstrated the production of grid electricity at utility-scale with a molten-salt solar power tower. This paper provides an overview of the project, from inception in 1993 to closure in the spring of 1999. Included are discussions of the goals of the Solar Two consortium, the planned-vs.-actual timeline, plant performance, problems encountered, and highlights and successes of the project. The paper concludes with a number of key results of the Solar Two test and evaluation program.

REILLY,HUGH E.; PACHECO,JAMES E.

2000-03-02T23:59:59.000Z

200

Comparison of Second Wind Triton Data with Meteorological Tower Measurements  

DOE Green Energy (OSTI)

With the increased interest in remote sensing of wind information in recent years, it is important to determine the reliability and accuracy of new wind measurement technologies if they are to replace or supplement conventional tower-based measurements. In this study, we present the results of an analysis characterizing the measurement performance of a state-of-the-art SOund Detection And Ranging (sodar) device when compared to a high-quality tower measurement program. Second Wind Inc. (Somerville, MA, USA) provided NREL with more than six months of data from a measurement program conducted near an operating wind farm in western Texas.

Scott, G.; Elliott, D.; Schwartz, M.

2010-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "tower site tapajos" 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

Dry cooling tower operating experience in the LOFT reactor  

SciTech Connect

A dry cooling tower has been uniquely utilized to dissipate heat generated in a small experimental pressurized water nuclear reactor. Operational experience revealed that dry cooling towers can be intermittently operated with minimal wind susceptibility and water hammer occurrences by cooling potential steam sources after a reactor scram, by isolating idle tubes from the external atmosphere, and by operating at relatively high pressures. Operating experience has also revealed that tube freezing can be minimized by incorporating the proper heating and heat loss prevention features.

Hunter, J.A.

1980-01-01T23:59:59.000Z

202

Modeling, loading, and preliminary design considerations for tall guyed towers  

Science Conference Proceedings (OSTI)

In this paper, the authors first summarize the results of an investigation they carried out on the collapse of a 1900 ft tall guyed tower under ice and wind loads. Based on this investigation, they then proceed to present some structural analysis recommendations relating to loading and modeling concerns. Special emphasis is placed on the importance of ice loading, and on the level of accuracy required in modeling the nonlinear response behavior. Finally, the conclusions drawn from this study are used to formulate preliminary design guidelines. This facilitates a systematic approach for the design of tall guyed towers. 23 refs.

Gantes, C.; Khoury, R.; Connors, J.J.; Pouangare, C. [Engg Information Technology, Cambridge, MA (United States)

1993-12-01T23:59:59.000Z

203

On Why Disks Generate Magnetic Towers and Collimate Jets  

E-Print Network (OSTI)

We show that accretion disks with magnetic fields in them ought to make jets provided that their electrical conductivity prevents slippage and there is an ambient pressure in their surroundings. We study equilibria of highly wound magnetic structures. General Energy theorems demonstrate that they form tall magnetic towers whose height grows with every turn at a velocity related to the circular velocity in the accretion disk. The pinch effect amplifies the magnetic pressures toward the axis of the towers whose stability is briefly considered.

D Lynden-Bell

2002-08-21T23:59:59.000Z

204

On Why Disks Generate Magnetic Towers and Collimate Jets  

E-Print Network (OSTI)

We show that accretion disks with magnetic fields in them ought to make jets provided that their electrical conductivity prevents slippage and there is an ambient pressure in their surroundings. We study equilibria of highly wound magnetic structures. General Energy theorems demonstrate that they form tall magnetic towers whose height grows with every turn at a velocity related to the circular velocity in the accretion disk. The pinch effect amplifies the magnetic pressures toward the axis of the towers whose stability is briefly considered.

Lynden-Bell, Donald

2002-01-01T23:59:59.000Z

205

SunShot Initiative: Solar Power Tower Improvements with the Potential to  

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

Solar Power Tower Improvements Solar Power Tower Improvements with the Potential to Reduce Costs to someone by E-mail Share SunShot Initiative: Solar Power Tower Improvements with the Potential to Reduce Costs on Facebook Tweet about SunShot Initiative: Solar Power Tower Improvements with the Potential to Reduce Costs on Twitter Bookmark SunShot Initiative: Solar Power Tower Improvements with the Potential to Reduce Costs on Google Bookmark SunShot Initiative: Solar Power Tower Improvements with the Potential to Reduce Costs on Delicious Rank SunShot Initiative: Solar Power Tower Improvements with the Potential to Reduce Costs on Digg Find More places to share SunShot Initiative: Solar Power Tower Improvements with the Potential to Reduce Costs on AddThis.com... Concentrating Solar Power

206

Property:CoolingTowerWaterUseAnnlAvgGross | Open Energy Information  

Open Energy Info (EERE)

Property Name CoolingTowerWaterUseAnnlAvgGross Property Type Number Description Cooling Tower Water use (annual average) (afday) Gross. Retrieved from "http:en.openei.orgw...

207

Microphysical Measurements from an Aircraft Ascending with a Growing Isolated Maritime Cumulus Tower  

Science Conference Proceedings (OSTI)

The development of precipitation in the top of an isolated maritime cumulus tower is traced by four rapid penetrations with an instrumented aircraft between 400 and 1000 m below the visible top of the growing tower. The hydrometeor distribution ...

Paul T. Willis; John Hallett

1991-01-01T23:59:59.000Z

208

800mm luxury : pencil tower phenomenon in Hong Kong, China  

E-Print Network (OSTI)

150m2 - 40m2 - 60m3. Pencil Towers are slender pencil-like apartment buildings. They are commonly found in high-dense Asian cities such as Hong Kong, Tokyo and Singapore. Focusing on Hong Kong as the context of research, ...

Yam, Hiu Lan

2012-01-01T23:59:59.000Z

209

Executive Summary: Assessment of Parabolic Trough and Power Tower Solar Technology Cost and Performance Forecasts  

DOE Green Energy (OSTI)

Sargent& Lundy LLC conducted an independent analysis of parabolic trough and power tower solar technology cost and performance.

Not Available

2003-10-01T23:59:59.000Z

210

Assessment of Parabolic Trough and Power Tower Solar Technology Cost and Performance Forecasts  

DOE Green Energy (OSTI)

Sargent and Lundy LLC conducted an independent analysis of parabolic trough and power tower solar technology cost and performance.

Not Available

2003-10-01T23:59:59.000Z

211

NREL: MIDC/National Wind Technology Center M2 Tower (39.91 N...  

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

The Measurement and Instrumentation Data Center collects Irradiance and Meterological data from the National Wind Technology Center M2 Tower....

212

Model and Seismic Analysis of Large-scale Wind Turbine Tower Structure  

Science Conference Proceedings (OSTI)

The working condition of wind turbine tower structure with a massive engine room and revolving wind wheels is very complex. The paper simplify the wind turbine tower model with finite element analysis software --ANSYS, completed modal analysis firstly, ... Keywords: wind turbine tower, model analysis, resonance, time-history analysis, dynamic

Xiang Liu; Jiangtao Kong

2012-05-01T23:59:59.000Z

213

Radiometric Modeling of Mechanical Draft Cooling Towers to Assist in the Extraction of their Absolute Temperature  

E-Print Network (OSTI)

Radiometric Modeling of Mechanical Draft Cooling Towers to Assist in the Extraction CENTER FOR IMAGING SCIENCE Title of Dissertation: Radiometric Modeling of Mechanical Draft Cooling Towers of Mechanical Draft Cooling Towers to Assist in the Extraction of their Absolute Temperature from Remote Thermal

Salvaggio, Carl

214

Ilchmann, Achim; Pahl, M. : Adaptive Multivariable pH Regulation of a Biogas Tower Reactor  

E-Print Network (OSTI)

Ilchmann, Achim; Pahl, M. : Adaptive Multivariable pH Regulation of a Biogas Tower Reactor Zuerst. The adaptive controller was successlullytesteclover il pcriod of tu'o nonths at a biogas tower reuetoriu pilot are not applicable to the biogas tower reüctor.since a dontinatingf-eatureof the new reactol' prir-rciplc-is its

Knobloch,Jürgen

215

Theoretical analysis of natural-convection towers for solar-energy conversion  

DOE Green Energy (OSTI)

A theoretical study of solar-powered natural convection tower (chimney) performance is presented. Both heated and cooled towers are analyzed, the latter using evaporating water as the cooling mechanism. The results, which are applicable to any open-cycle configuration, show that the ideal conversion efficiencies of both heated and cooled natural convection towers are linear functions of height. The performance of a heated tower in an adiabatic atmospheric ideally approaches the Carnot efficiency limit of approx. 3.4%/km(1.0%/1000 ft). Including water pumping requirements, the ideal limit to cooled tower performance is approx. 2.75%/km(0.85%/1000 ft). Ambient atmospheric conditions such as vertical temperature gradient (lapse rate) and relative humidity can have significantly adverse effects on natural convection tower performance. The combined effects of lapse rate and ambient relative humidity are especially important for cooled natural convection towers.

Lasier, D.D.; Jacobs, E.W.

1983-05-01T23:59:59.000Z

216

Computer Simulation of Cooling Effect of Wind Tower on Passively Ventilated Building  

E-Print Network (OSTI)

Traditional buildings are cooled and ventilated by mechanically induced drafts. Natural ventilation aspires to cool and ventilate a building by natural means, such as cross ventilation or wind towers, without mechanical equipment. A simple computer program was developed to simulate airflow through a wind tower based on tower dimensions and air temperature. The program was compared to experimental results with reasonable agreement. Parametric analysis indicates that interior air temperature approaches outdoor air temperature asymptotically as tower height and cross-sectional area are increased, and that it may be more cost effective to increase the tower?s height than its cross sectional area. The program was then used to simulate hour-by-hour indoor air temperatures of an occupied auditorium in Dayton, OH. The results indicate that a large wind tower was able to keep the temperature of an occupied auditorium at a comfortable level year round.

Seryak, J.; Kissock, J. K.

2002-01-01T23:59:59.000Z

217

Tower City, North Dakota: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Tower City, North Dakota: Energy Resources Tower City, North Dakota: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 46.9227548°, -97.6739889° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":46.9227548,"lon":-97.6739889,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

218

Microsoft Word - Final_NineCanyon_CommunicationTowerInstall_CX  

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

1, 2013 1, 2013 REPLY TO ATTN OF: KEC-4 SUBJECT: Environmental Clearance Memorandum Kelly Gardner, PMP Project Manager, TEP-TPP-1 Proposed Action: Nine Canyon Substation Communication Tower Addition: 331800 McNary Sub Bus Tie Relay Replacements and 310427 McNary-Badger Canyon Transfer Trip Install Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B4.6 - Additions and modifications to transmission facilities Location: Kennewick, Benton County, Washington Proposed by: Bonneville Power Administration (BPA) Description of the Proposed Action: BPA proposes to install a 60-foot communications tower and associated communication equipment at the Benton County Public Utility District's Nine Canyon Substation in Benton County, Washington. The upgrade would involve replacing the

219

No Chemical, Zero Bleed Cooling Tower Water Treatment Process  

E-Print Network (OSTI)

This paper describes a process to treat cooling tower water by means of a fully automated and chemical free mechanical water treatment process. This is an alternative to conventional chemical treatment. Beginning with a suction pump to draw water out of the tower sump, water goes through a permanent magnetic descaler to increase the water solubility and begin the scale inhibition process. This also descales existing scale build-up in the system. Ozone is manufactured from ambient air and injected into the bypass system through a venturi type injector. This kills algae, slime and bacteria and enhances the magnetic descaling process. The final stage filter separates solids from the water to prevent corrosion from impingement. These solids are automatically purged to the sanitary drain. Clarified water is returned to the sump where the process repeats on a 10%-20% by volume side stream basis.

Coke, A. L.

1992-04-01T23:59:59.000Z

220

Advanced Lighting Controls - My Venture from the Ivory Tower  

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

Advanced Lighting Controls - My Venture from the Ivory Tower Advanced Lighting Controls - My Venture from the Ivory Tower Speaker(s): Charlie Huizenga Date: June 15, 2012 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Dragan Charlie Curcija Lighting energy represents 30-40% of commercial building electricity consumption, yet very few buildings have advanced lighting controls. The potential energy savings are tremendous as is the opportunity to reduce demand on the grid during critical peak use periods. Charlie will describe how low-cost wireless radio technology developed at UC Berkeley and commercialized by Adura Technologies is creating a paradigm shift in the way we think about controlling lighting. Beyond deep energy savings and demand response, the technology offers personal control for occupants and

Note: This page contains sample records for the topic "tower site tapajos" 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

2011 CERN Waste Heat EN-CV February 28th 2011 Power Dissipated by the Cooling Towers  

E-Print Network (OSTI)

2011 CERN Waste Heat EN-CV February 28th 2012 1 2011 Power Dissipated by the Cooling Towers The cooling circuits at CERN use evaporative open cooling towers to discharge into the atmosphere the heat towers per complex depend on the amount of cooling power required. LHC one cooling tower per even LHC

Wu, Sau Lan

222

Raw Data from National Wind Technology Center M2 Tower (1996 - 2001) |  

Open Energy Info (EERE)

1996 - 2001) 1996 - 2001) Dataset Summary Description This raw data reflects readings from instruments mounted on or near a 82 meter meteorological tower located at the National Wind Technology Center (NWTC), approximately 5 miles south of Boulder, CO (specifically: 39.9107 N, 105.2348 W, datum WGS84). The base elevation at the site is 1,855 meters AMSL.The dataset includes irrandiance information (Global, kWs/m2) and meteorological data, such as temperature, pressure, and dew point, as well as wind speed and direction at 2m, 5m, 10m, 20m, 50m, and 80m. Included here is a portion of the available data: from September 23, 1996 - August 23, 2001. A separate dataset is available for Aug 24, 2001 - March 10, 2011 in OpenEI. The NWTC website provides current data (updated daily), from as early as August 24, 2001, as well as instrument specifications.

223

Raw Data from National Wind Technology Center M2 Tower (2001 - 2011) |  

Open Energy Info (EERE)

2001 - 2011) 2001 - 2011) Dataset Summary Description This raw data reflects readings from instruments mounted on or near a 82 meter meteorological tower located at the National Wind Technology Center (NWTC), approximately 5 miles south of Boulder, CO (specifically: 39.9107 N, 105.2348 W, datum WGS84). The base elevation at the site is 1,855 meters AMSL.The dataset includes irrandiance information, such as global PSP (W/m2) and meteorological data, such as temperature, pressure, and wind speed and direction (at 2m, 5m, 10m, 20m, 50m, and 80m). Included here is a portion of the available data: from August 24, 2001 - March 10, 2011. A separate dataset is available for the period between September 23, 1996 and August 23, 2001.The NWTC website provides up to the day updates to this data, from as early as August 24, 2001 through yesterday, as well as instrument specifications.

224

Hybrid Tower Study: Volume 3: Phase 3 -- Scale Model Development and Full-Scale Tests  

Science Conference Proceedings (OSTI)

Hybrid towers maximize the power transmission efficiency of the available space whenever there is the need to have both ac and dc lines in the same corridor. This study developed calculation techniques and design rules for the placement of conductors energized with HVAC and HVDC circuits on the same towers. Significantly, the study did not identify any hybrid interactions that would prevent the successful operation of a hybrid corridor or hybrid tower transmission line.

1994-06-29T23:59:59.000Z

225

Surface and Tower Meteorological Instrumentation at Atqasuk (METTWR2H) Handbook  

SciTech Connect

The Atqasuk meteorology station (AMET) uses mainly conventional in situ sensors to measure wind speed, wind direction, air temperature, dew point, and humidity mounted on a 10-m tower. It also obtains barometric pressure, visibility and precipitation data from sensors at or near the base of the tower. In addition, a chilled mirror hygrometer (CMH) is located at 1 m for comparison purposes. Temperature and relative humidity (RH) probes are mounted at 2 m and 5 m on the tower.

Ritsche, MT

2006-01-01T23:59:59.000Z

226

Design of Light Weight Structure for Wind Turbine Tower by Using ...  

Science Conference Proceedings (OSTI)

This paper reports a new design scheme of light weight structure for wind turbine tower. This design scheme is based on the integration of the nano-structured...

227

An investigation of design alternatives for 328-ft (100-m) tall wind turbine towers.  

E-Print Network (OSTI)

??As wind turbines are continued to be placed at higher elevations, the need for taller wind turbine towers becomes necessary. However, there are multiple challenges (more)

Lewin, Thomas James

2010-01-01T23:59:59.000Z

228

RECIPIENT:Desert Research Institute STATE:NV PROJECT Tall Tower...  

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

Research Institute STATE:NV PROJECT Tall Tower Wind Energy Monitoring and Numerical Model Validation in Southern Nevada; NREl Tracking TITLE: No. 11-012 Funding Opportunity...

229

Enhancement of CN Tower lightning current derivative signals using a modified power spectral subtraction method.  

E-Print Network (OSTI)

??Lightning current measurements are possible using instrumental tall structures or rocket-triggered lightning. The CN Tower has been a source of lightning current data for the (more)

Mehmud, Huma

2006-01-01T23:59:59.000Z

230

Flux Measurements of Volatile Organic Compounds from an Urban Tower Platform.  

E-Print Network (OSTI)

??A tall tower flux measurement setup was established in metropolitan Houston, Texas, to measure trace gas fluxes from both anthropogenic and biogenic emission sources in (more)

Park, Chang Hyoun

2011-01-01T23:59:59.000Z

231

Performance analysis of heat transfer processes from wet and dry surfaces : cooling towers and heat exchangers.  

E-Print Network (OSTI)

??The objective of this work is to study the thermal and hydraulic performance of evaporatively cooled heat exchangers, including closed wet cooling towers, and dry (more)

Hasan, Ala Ali

2005-01-01T23:59:59.000Z

232

Numerical modelling of heat and mass transfer and optimisation of a natural draft wet cooling tower.  

E-Print Network (OSTI)

??The main contribution of this work is to answer several important questions relating to natural draft wet cooling tower (NDWCT) modelling, design and optimisation. Specifically, (more)

Williamson, Nicholas J

2007-01-01T23:59:59.000Z

233

Performance Analysis of Heat Transfer Processes from Wet and Dry Surfaces: Cooling Towers and Heat Exchangers.  

E-Print Network (OSTI)

??The objective of this work is to study the thermal and hydraulic performance of evaporatively cooled heat exchangers, including closed wet cooling towers, and dry (more)

Hasan, Ala Ali

2005-01-01T23:59:59.000Z

234

Detailed analysis of the wake and free-flow characteristics at the Goodnoe Hills MOD-2 site  

DOE Green Energy (OSTI)

Wind data collected at nine meteorological towers at the Goodnoe Hills MOD-2 wind turbine site were analyzed to characterize the wind flow over the site both in the absence and presence of wind turbine wakes. Although previous studies have examined the wake and free-flow characteristics at the site, data collected in 1985 from nine towers permitted a much more detailed and accurate analysis than was previously possible. 13 refs., 25 figs., 7 tabs.

Elliott, D.L.; Barnard, J.C.

1989-07-01T23:59:59.000Z

235

A Regenerative High-Rise Tower in Shreveport, Louisiana  

E-Print Network (OSTI)

Zero Net Energy Buildings are increasingly being designed and constructed in response to the demand for sustainable buildings. But, we must now go beyond merely sustaining our environment for future generations we must provide regenerative designs that restore our natural environment. This paper will document the design of a regenerative high-rise tower in Shreveport, Louisiana, which will serve as a facility to train individuals in a non-profit organizations renewal strategies and demonstrate by example the pedagogy of regenerative design. The 16-story structure built in the 1950s and named the Petroleum Tower, reflecting the commodity that then ruled the local economy was vacant and asbestos-laden when given to the non-profit Community Renewal International (CRI) in 2001. In 2006, funded by a grant from the U.S. Environmental Protection Agency, workers removed the asbestos. Through a follow up grant from the U.S. Department of Energy to support the design process of a new CRI headquarters building, the University of Texas at Austin School of Architecture completed architectural design studies for the building renewal. The principles of this new design include: day lighting, envelope configuration, building integrated photovoltaic systems, green surfaces, ventilation strategies, advanced mechanical cooling systems, regenerative elevator systems, energy management systems, water harvesting, grey water systems, trigeneration systems and a combined heating, hot water and power biodiesel plant.

Garrison, M.

2010-08-01T23:59:59.000Z

236

ON THE STRUCTURE AND STABILITY OF MAGNETIC TOWER JETS  

SciTech Connect

Modern theoretical models of astrophysical jets combine accretion, rotation, and magnetic fields to launch and collimate supersonic flows from a central source. Near the source, magnetic field strengths must be large enough to collimate the jet requiring that the Poynting flux exceeds the kinetic energy flux. The extent to which the Poynting flux dominates kinetic energy flux at large distances from the engine distinguishes two classes of models. In magneto-centrifugal launch models, magnetic fields dominate only at scales {approx}< 100 engine radii, after which the jets become hydrodynamically dominated (HD). By contrast, in Poynting flux dominated (PFD) magnetic tower models, the field dominates even out to much larger scales. To compare the large distance propagation differences of these two paradigms, we perform three-dimensional ideal magnetohydrodynamic adaptive mesh refinement simulations of both HD and PFD stellar jets formed via the same energy flux. We also compare how thermal energy losses and rotation of the jet base affects the stability in these jets. For the conditions described, we show that PFD and HD exhibit observationally distinguishable features: PFD jets are lighter, slower, and less stable than HD jets. Unlike HD jets, PFD jets develop current-driven instabilities that are exacerbated as cooling and rotation increase, resulting in jets that are clumpier than those in the HD limit. Our PFD jet simulations also resemble the magnetic towers that have been recently created in laboratory astrophysical jet experiments.

Huarte-Espinosa, M.; Frank, A.; Blackman, E. G. [Department of Physics and Astronomy, University of Rochester, 600 Wilson Boulevard, Rochester, NY 14627-0171 (United States); Ciardi, A. [LERMA, Universite Pierre et Marie Curie, Observatoire de Paris, F-92195 Meudon (France); Hartigan, P. [Department of Physics and Astronomy, Rice University, 6100 S. Main, Houston, TX 77521-1892 (United States); Lebedev, S. V.; Chittenden, J. P. [Blackett Laboratory, Imperial College London, SW7 2BW London (United Kingdom)

2012-09-20T23:59:59.000Z

237

Coagulation chemistries for silica removal from cooling tower water.  

SciTech Connect

The formation of silica scale is a problem for thermoelectric power generating facilities, and this study investigated the potential for removal of silica by means of chemical coagulation from source water before it is subjected to mineral concentration in cooling towers. In Phase I, a screening of many typical as well as novel coagulants was carried out using concentrated cooling tower water, with and without flocculation aids, at concentrations typical for water purification with limited results. In Phase II, it was decided that treatment of source or make up water was more appropriate, and that higher dosing with coagulants delivered promising results. In fact, the less exotic coagulants proved to be more efficacious for reasons not yet fully determined. Some analysis was made of the molecular nature of the precipitated floc, which may aid in process improvements. In Phase III, more detailed study of process conditions for aluminum chloride coagulation was undertaken. Lime-soda water softening and the precipitation of magnesium hydroxide were shown to be too limited in terms of effectiveness, speed, and energy consumption to be considered further for the present application. In Phase IV, sodium aluminate emerged as an effective coagulant for silica, and the most attractive of those tested to date because of its availability, ease of use, and low requirement for additional chemicals. Some process optimization was performed for coagulant concentration and operational pH. It is concluded that silica coagulation with simple aluminum-based agents is effective, simple, and compatible with other industrial processes.

Nyman, May Devan; Altman, Susan Jeanne; Stewart, Tom

2010-02-01T23:59:59.000Z

238

FLUX MEASUREMENTS FROM A TALL TOWER IN A COMPLEX LANDSCAPE  

Science Conference Proceedings (OSTI)

The accuracy and representativeness of flux measurements from a tall tower in a complex landscape was assessed by examining the vertical and sector variability of the ratio of wind speed to momentum flux and the ratio of vertical advective to eddy flux of heat. The 30-60 m ratios were consistent with theoretical predictions which indicate well mixed flux footprints. Some variation with sector was observed that were consistent with upstream roughness. Vertical advection was negligible compared with vertical flux except for a few sectors at night. This implies minor influence from internal boundary layers. Flux accuracy is a function of sector and stability but 30-60 m fluxes were found to be generally representative of the surrounding landscape. This paper will study flux data from a 300 m tower, with 4 levels of instruments, in a complex landscape. The surrounding landscape will be characterized in terms of the variation in the ratio of mean wind speed to momentum flux as a function of height and wind direction. The importance of local advection will be assessed by comparing vertical advection with eddy fluxes for momentum and heat.

Kurzeja, R.; Weber, A.; Chiswell, S.; Parker, M.

2010-07-22T23:59:59.000Z

239

Research for the Crane Boom Length Coefficient Considering the Tower Head Flexibility in Rotary Plane  

Science Conference Proceedings (OSTI)

When the crane boom length in rotary plane is determined, the traditional methods only consider support condition, non-uniform, boom end lateral displacement constraint effect of amplitude dragline and hoist rope tensile forces. Ignoring tower head elastic ... Keywords: Equivalent elastic support method, Rotary plane, Tower head flexibility, Non-conservative loading, Length coefficient

Zhang Guangyun; Lan Peng; Lu Nianli

2011-01-01T23:59:59.000Z

240

Nuclear Maintenance Applications Center: Guideline for Cooling Tower Inspection and Maintenance  

Science Conference Proceedings (OSTI)

Cooling tower structural failures have recently become a focus area for the nuclear industry based on events that have resulted in lost generation as well as high repair costs. Environmental concerns regarding thermal pollution and water usage have also recently increased the need for guidance for cooling tower inspection and maintenance.

2011-06-06T23:59:59.000Z

Note: This page contains sample records for the topic "tower site tapajos" 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

Solar Two: A Molten Salt Power Tower Demonstration* Craig E.Tyner  

E-Print Network (OSTI)

Solar Two: A Molten Salt Power Tower Demonstration* Craig E.Tyner Sandia National Laboratories.S. Department of Energy (DOE),Sandia National Laboratories, and industry to convert the 10-MwSolar One Power, is $48.5 million. The plant will begin operation in early 1996. Introduction A solar power tower plant

Laughlin, Robert B.

242

Cooling-Tower Performance Prediction and Improvement: Volumes 1 and 2  

Science Conference Proceedings (OSTI)

New data and methods enable engineers to predict and improve the thermal performance of evaporative cooling towers. Current EPRI research focuses on analytic tools that will help utilities avoid costly operating penalties associated with cooling towers that do not meet thermal performance specifications.

1989-12-01T23:59:59.000Z

243

UT tower goes dark to conserve energy by KVUE.com  

E-Print Network (OSTI)

UT tower goes dark to conserve energy by KVUE.com Posted on November 22, 2013 at 5:12 PM Updated, but the first time the tower turned off its lights for the initiative. In previous initiatives, the UT Energy) assisted with turning off lights and electronics across campus to conserve energy. While the clock faces

244

Verification of BModes: Rotary Beam and Tower Modal Analysis Code; Preprint  

DOE Green Energy (OSTI)

This paper describes verification of BModes, a finite-element code developed to provide coupled modes for the blades and tower of a wind turbine. The blades, which may be rotating or non-rotating, and the towers, whether onshore or offshore, are modeled using specialized 15-dof beam finite elements. Both blade and tower models allow a tip attachment, which is assumed to be rigid body with six moments of inertia, and a mass centroid that may be offset from the blade or tower axis. Examples of tip attachments are aerodynamic brakes for blades and nacelle-rotor subassembly for towers. BModes modeling allows for tower supports including tension wires, floating platforms, and monopiles on elastic foundations. Coupled modes (implying coupling of flap, lag, axial, and torsional motions) are required for modeling major flexible components in a modal-based, aeroelastic code such as FAST1. These are also required for validation of turbine models using experimental data, modal-based fatigue analysis, controls design, and understanding aeroelastic-stability behavior of turbines. Verification studies began with uniform tower models, with and without tip inertia, and progressed to realistic towers. For the floating turbine, we accounted for the effects of hydrodynamic inertia, hydrostatic restoring, and mooring lines stiffness. For the monopole-supported tower, we accounted for distributed hydrodynamic mass on the submerged part of the tower and for distributed foundation stiffness. Finally, we verified a model of a blade carrying tip mass and rotating at different speeds (verifications of other blade models, rotating or non-rotating, have been reported in another paper.) Verifications were performed by comparing BModes-generated modes with analytical results, if available, or with MSC.ADAMS results. All results in general show excellent agreement.

Bir, G.

2010-04-01T23:59:59.000Z

245

Zoning for Small Wind: The Importance of Tower Height  

Wind Powering America (EERE)

1 1 Zoning for Small Wind: The Importance of Tower Height An ASES Small Wind Webinar Mick Sagrillo-Wisconsin's Focus on Energy © 2008 by Mick Sagrillo 2 Definitions: rotor L&S Tech. Assoc., Inc. Rotor = "collector" for a wind system 3 Definitions: wind * Wind = the 'fuel' * Wind has two 'components' - Quantity = wind speed (velocity or V) - Quality = 'clean' flowing wind 4 Quantity * = average annual wind speed * Climate, not weather * Akin to annual average sun hours for PV or head and flow for hydro * Wind speed increases with height above ground... * ...Due to diminished ground drag (friction) 5 Power in the wind V³ * Wind speed = V * Power available is proportional to wind speed x wind speed x wind speed - or P ~ V x V x V - or P ~ V ³ * Therefore, 10% V = 33% P * Lesson !

246

Solar two: A molten salt power tower demonstration  

Science Conference Proceedings (OSTI)

A consortium of United States utility concerns led by the Southern California Edison Company (SCE) is conducting a cooperative project with the US Department of Energy (DOE), Sandia National Laboratories, and industry to convert the 10-MW Solar One Power Tower Pilot Plant to molten nitrate salt technology. The conversion involves installation of a new receiver, a new thermal storage system, and a new steam generator; it utilizes Solar One`s heliostat field and turbine generator. Successful operation of the converted plant, called Solar Two, will reduce economic risks in building initial commercial power tow projects and accelerate the commercial acceptance of this promising renewable energy technology. The estimated cost of Solar Two, including its three-year test period, is $48.5 million. The plant will begin operation in early 1996.

Tyner, C.E. [Sandia National Labs., Albuquerque, NM (United States); Sutherland, J.P. [Southern California Edison, Rosemead, CA (United States); Gould, W.R. Jr. [Bechtel Corp., San Francisco, CA (United States)

1995-08-01T23:59:59.000Z

247

Energy (Cost) Savings by Zero Discharge in Cooling Towers  

E-Print Network (OSTI)

Maximum reuse of cooling tower blowdown by the incorporation of a sidestream softening system to recycle water can allow for significant savings in energy costs for industry. The system design parameters described in this paper are based upon calcium sulfate, calcium carbonate, and silica solubility equations for the resultant high ionic strength of a zero blowdown system. Operational aspects are highlighted in terms of deposition, corrosion, and biofouling potentials as well as currently-practiced, successful treatment procedures. The effects and history of corrosion and scale inhibitors, as well as other treatment chemicals, have been evaluated for numerous plants utilizing zero blowdown, and a summation of this knowledge is presented here. The cost analysis of conventional systems versus recycle systems is based upon a computer model's predictions for makeup waters of various qualities and costs.

Matson, J. V.; Gardiner, W. M.; Harris, T. G.; Puckorius, P. R.

1982-01-01T23:59:59.000Z

248

The evolution of magnetic tower jets in the laboratory  

E-Print Network (OSTI)

The evolution of laboratory produced magnetic jets is followed numerically through three-dimensional, non-ideal magnetohydrodynamic simulations. The experiments are designed to study the interaction of a purely toroidal field with an extended plasma background medium. The system is observed to evolve into a structure consisting of an approximately cylindrical magnetic cavity with an embedded magnetically confined jet on its axis. The supersonic expansion produces a shell of swept-up shocked plasma which surrounds and partially confines the magnetic tower. Currents initially flow along the walls of the cavity and in the jet but the development of current-driven instabilities leads to the disruption of the jet and a re-arrangement of the field and currents. The top of the cavity breaks-up and a well collimated, radiatively cooled, 'clumpy' jet emerges from the system.

A. Ciardi; S. V. Lebedev; A. Frank; E. G. Blackman; J. P. Chittenden; C. J. Jennings; D. J. Ampleford; S. N. Bland; S. C. Bott; J. Rapley; G. N. Hall; F. A. Suzuki-Vidal; A. Marocchino; T. Lery; C. Stehle

2006-11-14T23:59:59.000Z

249

Cooling Tower Energy Conservation Through Hydraulic Fan Drives  

E-Print Network (OSTI)

Many companies offer gearboxes, shafts, and couplings for cooling tower fan drives, with little or no innovation. These companies have traditionally been purchased with an emphasis on cost and not "Return on Investment!" In the past, when energy conservation or "Return on Investment" was emphasized, the only alternative was to add an expensive frequency inverter for variable speed control. This meant expensive rewiring, placing additional controls in an already crowded control room, or constructing a special building for them. However, with H.E.M.'s patented Hydraulic Fan Drive, one receives variable speed control and more efficiency for approximately the price of a mechanical drive. The new, more efficient Hydraulic Drive allows for a variable speed control and the ability to sense water temperature to control fan speed.

Dickerson, J.

1991-06-01T23:59:59.000Z

250

Flue gas injection control of silica in cooling towers.  

Science Conference Proceedings (OSTI)

Injection of CO{sub 2}-laden flue gas can decrease the potential for silica and calcite scale formation in cooling tower blowdown by lowering solution pH to decrease equilibrium calcite solubility and kinetic rates of silica polymerization. Flue gas injection might best inhibit scale formation in power plant cooling towers that use impaired makeup waters - for example, groundwaters that contain relatively high levels of calcium, alkalinity, and silica. Groundwaters brought to the surface for cooling will degas CO{sub 2} and increase their pH by 1-2 units, possibly precipitating calcite in the process. Recarbonation with flue gas can lower the pHs of these fluids back to roughly their initial pH. Flue gas carbonation probably cannot lower pHs to much below pH 6 because the pHs of impaired waters, once outgassed at the surface, are likely to be relatively alkaline. Silica polymerization to form scale occurs most rapidly at pH {approx} 8.3 at 25 C; polymerization is slower at higher and lower pH. pH 7 fluids containing {approx}220 ppm SiO{sub 2} require > 180 hours equilibration to begin forming scale whereas at pH 8.3 scale formation is complete within 36 hours. Flue gas injection that lowers pHs to {approx} 7 should allow substantially higher concentration factors. Periodic cycling to lower recoveries - hence lower silica concentrations - might be required though. Higher concentration factors enabled by flue gas injection should decrease concentrate volumes and disposal costs by roughly half.

Brady, Patrick Vane; Anderson, Howard L., Jr.; Altman, Susan Jeanne

2011-06-01T23:59:59.000Z

251

Adjudication of a Contract for the Construction of the Cooling Tower Complex for the North Experimental Area  

E-Print Network (OSTI)

Adjudication of a Contract for the Construction of the Cooling Tower Complex for the North Experimental Area

1976-01-01T23:59:59.000Z

252

A case history of a coal gasification wastewater cooling tower at the Great Plains coal gasification project  

SciTech Connect

This paper describes the conceptual process design of the Great Plains cooling water system, the fouling history of the cooling tower, and the results of the design modifications. In addition, general design guidelines for future wastewater reuse cooling towers are recommended. By following these guidelines, design engineers can minimize the risk of fouling that could impair a wastewater cooling tower's thermal performance.

Crocker, B.R.; Bromel, M.C.; Pontbriand, M.W.

1987-01-01T23:59:59.000Z

253

Radiometric Modeling of Mechanical Draft Cooling Towers to Assist in the Extraction of their Absolute Temperature from  

E-Print Network (OSTI)

Radiometric Modeling of Mechanical Draft Cooling Towers to Assist in the Extraction108, Aiken, SC, USA ABSTRACT Determining the internal temperature of a mechanical draft cooling tower is to estimate the temperature of the air exiting a mechanical draft cooling tower (MDCT) through the use

Salvaggio, Carl

254

ARM Carbon Cycle Gases Flasks at SGP Site  

DOE Data Explorer (OSTI)

Data from flasks are sampled at the Atmospheric Radiation Measurement Program ARM, Southern Great Plains Site and analyzed by the National Oceanic and Atmospheric Administration NOAA, Earth System Research Laboratory ESRL. The SGP site is included in the NOAA Cooperative Global Air Sampling Network. The surface samples are collected from a 60 m tower at the ARM SGP Central Facility, usually once per week in the afternoon. The aircraft samples are collected approximately weekly from a chartered aircraft, and the collection flight path is centered over the tower where the surface samples are collected. The samples are collected by the ARM and LBNL Carbon Project.

Sebastien Biraud

255

The Morning Inversion Near the Ground and Its Daytime Transition at Two Rural Sites in the Carolinas  

Science Conference Proceedings (OSTI)

Six years of tower data from two dissimilar sites in the eastern piedmont of the Carolinas are analyzed to yield a selective climatology of the lower portion of the morning inversion. Its transition to daytime conditions is then described and ...

Allen J. Riordan; Jerry M. Davis; Raymond B. Kiess

1986-02-01T23:59:59.000Z

256

Waste-heat vertical tube foam evaporation for cooling tower blowdown renovation/recycle. Project summary report  

SciTech Connect

A prototype waste-heat vertical tube foam evaporation (WH-VTFE) plant was designed, constructed, and field-tested for reducing power plant cooling tower blowdown to a small residual volume of solids slurried in brine, while producing distilled water for reuse. Facility design was based on previously-developed pilot plant test data. The WH-VTFE facility was constructed for initial parametric testing in upflow/downflow evaporation modes with boiler steam. The field test/demonstration phase was conducted at a power plant site using turbine exhaust steam for the up to 50-fold cooling tower blowdown concentration in a foamy-flow seed-slurried mode of downflow vertical tube evaporation. The VTFE heat transfer coefficient ranged between 5600 to 9000 W/sq m/degree, over 4-fold the level considered as acceptable in another study. Further, a sufficient temperature difference is available within a typical power plant heat rejection system to operate a WH-VTFE when the plant load is above 50% of its design capacity. Scale formed from inadequate brine recycle rates was readily removed by recycling fresh water through the evaporator to restore the high heat transfer performance of the WH-VTFE. It was concluded that WH-VTFE was demonstrated as feasible and commercially viable.

Sephton, H.H.; Someahsaraii, K.

1982-02-01T23:59:59.000Z

257

Wind shear for large wind turbine generators at selected tall tower sites  

DOE Green Energy (OSTI)

The objective of the study described in this report is to examine the nature of wind shear profiles and their variability over the height of large horizontal-axis wind turbines and to provide information on wind shear relevant to the design and opertion of large wind turbines. Wind turbine fatigue life and power quality are related through the forcing functions on the blade to the shapes of the wind shear profiles and their fluctuations over the disk of rotation.

Elliott, D.L.

1984-04-01T23:59:59.000Z

258

Improvement of risk estimate on wind turbine tower buckled by hurricane  

E-Print Network (OSTI)

Wind is one of the important reasonable resources. However, wind turbine towers are sure to be threatened by hurricanes. In this paper, method to estimate the number of wind turbine towers that would be buckled by hurricanes is discussed. Monte Carlo simulations show that our method is much better than the previous one. Since in our method, the probability density function of the buckling probability of a single turbine tower in a single hurricane is obtained accurately but not from one approximated expression. The result in this paper may be useful to the design and maintenance of wind farms.

Li, Jingwei

2013-01-01T23:59:59.000Z

259

Combined thermal storage pond and dry cooling tower waste heat rejection system for solar-thermal steam-electric power plants. Final report  

DOE Green Energy (OSTI)

The thermal performance and economics of the combined thermal storage pond and dry cooling tower waste heat rejection system concept for solar-thermal steam-electric plants have been evaluated. Based on the computer simulation of the operation of southwest-sited solar-thermal plants, it has been determined that the combined pond-tower concept has significant cost and performance advantages over conventional dry cooling systems. Use of a thermal storage pond as a component of the dry cooling system allows a significant reduction in the required dry cooling heat exchange capacity and the associated parasitic power consumption. Importantly, it has been concluded that the combined pond-tower dry cooling system concept can be employed to economically maintain steam condensing temperatures at levels normally achieved with conventional evaporative cooling systems. An evaluation of alternative thermal storage pond design concepts has revealed that a stratified vertical-flow cut-and-fill reservoir with conventional membrane lining and covering would yield the best overall system performance at the least cost.

Guyer, E.C.; Bourne, J.G.; Brownell, D.L.; Rose, R.M.

1979-02-28T23:59:59.000Z

260

BREN Tower comes tumbling down as world record is set | National Nuclear  

National Nuclear Security Administration (NNSA)

BREN Tower comes tumbling down as world record is set | National Nuclear BREN Tower comes tumbling down as world record is set | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > BREN Tower comes tumbling down as world ... BREN Tower comes tumbling down as world record is set Posted By Office of Public Affairs NNSA Blog Some 345 tons of steel came tumbling down yesterday as a world

Note: This page contains sample records for the topic "tower site tapajos" 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

Lab Helps FAA Build Energy-Efficient Control Towers | Department of Energy  

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

Lab Helps FAA Build Energy-Efficient Control Towers Lab Helps FAA Build Energy-Efficient Control Towers Lab Helps FAA Build Energy-Efficient Control Towers April 23, 2010 - 10:57am Addthis With help from the Pacific Northwest National Laboratory and its subcontractor, Redhorse Corporation, the agency that keeps our country's airports running is bolstering its energy efficiency. The Federal Aviation Administration is developing building plans that save energy - and money - at five airports in the western U.S. Government agencies are required by law to audit their buildings, so the FAA saw some Recovery Act funding as an opportunity to help fund its energy audits. Air traffic control towers are a vital service for travelers, keeping air traffic free of accidents. Their accompanying base buildings house administrative offices and support systems.

262

BREN Tower comes tumbling down as world record is set | National Nuclear  

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

BREN Tower comes tumbling down as world record is set | National Nuclear BREN Tower comes tumbling down as world record is set | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > BREN Tower comes tumbling down as world ... BREN Tower comes tumbling down as world record is set Posted By Office of Public Affairs NNSA Blog Some 345 tons of steel came tumbling down yesterday as a world

263

Raw Data from National Wind Technology Center M2 Tower (2001...  

Open Energy Info (EERE)

2001 - 2011) This raw data reflects readings from instruments mounted on or near a 82 meter meteorological tower located at the

264

Raw Data from National Wind Technology Center M2 Tower (1996...  

Open Energy Info (EERE)

1996 - 2001) This raw data reflects readings from instruments mounted on or near a 82 meter meteorological tower located at the

265

Some Turbulence and Diffusion Parameter Estimates within Cooling Tower Plumes Derived from Sodar Data  

Science Conference Proceedings (OSTI)

Temperature and velocity fluctuations within a cooling tower plume in stable conditions at the Keystone power plant in Pennsylvania have been measured by use of a calibrated sodar. Monostatic and bistatic systems probed the plume at several ...

R. L. Coulter; K. H. Underwood

1980-12-01T23:59:59.000Z

266

From Hot Towers to TRMM: Joanne Simpson and Advances in Tropical Convection Research  

Science Conference Proceedings (OSTI)

Joanne Simpson began contributing to advances in tropical convection about half a century ago. The hot tower hypothesis jointly put forth by Joanne Simpson and Herbert Riehl postulated that deep convective clouds populating the equatorial trough ...

Robert A. Houze Jr.

2003-01-01T23:59:59.000Z

267

Electrically Active Hot Towers in African Easterly Waves prior to Tropical Cyclogenesis  

Science Conference Proceedings (OSTI)

It has been hypothesized that intense convective-scale hot towers play a role in tropical cyclogenesis via dynamic and thermodynamic feedbacks on the larger-scale circulation. In this study the authors investigate the role that widespread and/...

Kenneth D. Leppert II; Walter A. Petersen

2010-03-01T23:59:59.000Z

268

Evaluation of the Reanalysis Products from GSFC, NCEP, and ECMWF Using Flux Tower Observations  

Science Conference Proceedings (OSTI)

Reanalysis products produced at the various centers around the globe are utilized for many different scientific endeavors, including forcing land surface models and creating surface flux estimates. Here, flux tower observations of temperature, ...

Mark Decker; Michael A. Brunke; Zhuo Wang; Koichi Sakaguchi; Xubin Zeng; Michael G. Bosilovich

2012-03-01T23:59:59.000Z

269

Quality Control and Flux Sampling Problems for Tower and Aircraft Data  

Science Conference Proceedings (OSTI)

A series of automated tests is developed for tower and aircraft time series to identify instrumentation problems, flux sampling problems, and physically plausible but unusual situations. The automated procedures serve as a safety net for quality ...

Dean Vickers; L. Mahrt

1997-06-01T23:59:59.000Z

270

Finestructure of Elevated Stable Layers Observed by Sounder and In Situ Tower Sensors  

Science Conference Proceedings (OSTI)

A study of the finestructure within elevated stable atmospheric layers is described. The observational program consisted of measurements made with fast-response turbulence sensors on a carriage traversing a 300 m tower and comparison of the ...

E. E. Gossard; J. E. Gaynor; R. J. Zamora; W. D. Neff

1985-10-01T23:59:59.000Z

271

Estimation of Blade and Tower Properties for the Gearbox Research Collaborative Wind Turbine  

SciTech Connect

This report documents the structural and modal properties of the blade and tower of a 3-bladed 750-kW upwind turbine to develop an aeroelastic model of the wind turbine.

Bir, G.S.; Oyague, F.

2007-11-01T23:59:59.000Z

272

Economic and design analysis of daylighting a commercial tower in a hot and humid climate  

E-Print Network (OSTI)

A forty story commercial office tower in Tampa, Florida was redesigned for daylighting. The methods are outlined and results illustrated, A cooling load comparison is done to determine the economic feasibility of such a ...

Roscow, Robert F

1981-01-01T23:59:59.000Z

273

Test of a Phased Array Sodar by Intercomparison with Tower Data  

Science Conference Proceedings (OSTI)

The phased array sodar PA2 recently manufactured by the French REMTECH enterprise was tested using tower data for comparison. Wind speed, wind direction, and the standard deviation of the horizontal wind direction (??) were measured continuously ...

S. Vogt; P. Thomas

1994-02-01T23:59:59.000Z

274

Studies on Mathematical Models for Characterizing Plume and Drift Behavior From Cooling Towers, Executive Report  

Science Conference Proceedings (OSTI)

This report summarizes the contents of a five-volume work on new models for predicting plume rise and drift deposition from single and multiple natural-draft and mechanical-draft cooling towers.

1981-04-01T23:59:59.000Z

275

A Study of Wind Stress Determination Methods from a Ship and an Offshore Tower  

Science Conference Proceedings (OSTI)

Comparisons are made between surface wind stress measurements obtained by the inertial-dissipation and direct covariance methods on a stable offshore tower and by the inertial-dissipation and bulk methods on a ship. The shipboard inertial-...

Paul A. Frederickson; Kenneth L. Davidson; James B. Edson

1997-08-01T23:59:59.000Z

276

Hydrogen Storage in Wind Turbine Towers: Cost Analysis and Conceptual Design; Preprint  

Science Conference Proceedings (OSTI)

Low-cost hydrogen storage is recognized as a cornerstone of a renewables-hydrogen economy. Modern utility-scale wind turbine towers are typically conical steel structures that, in addition to supporting the rotor, could be used to store hydrogen. The most cost-effective hydrogen tower design would use substantially all of its volume for hydrogen storage and be designed at its crossover pressure. An 84-m tall hydrogen tower for a 1.5-MW turbine would cost an additional $84,000 (beyond the cost of the conventional tower) and would store 950 kg of hydrogen. The resulting incremental storage cost of $88/kg is approximately 30% of that for conventional pressure vessels.

Kottenstette, R.; Cotrell, J.

2003-09-01T23:59:59.000Z

277

An Atmospheric Solitary Gust Observed with a Doppler Radar, a Tall Tower and a Surface Network  

Science Conference Proceedings (OSTI)

Doppler radar and a 444 m tall instrumented tower provide a detailed view of the kinematic and thermodynamic structure of a solitary gust. A study of the data fields, and comparison with theoretical and laboratory work leads to the conclusion ...

Richard J. Doviak; Runsheng Ge

1984-09-01T23:59:59.000Z

278

Beyond the ivory tower : in search of a new form for campus-community relationships  

E-Print Network (OSTI)

The terms "ivory tower" and "town-gown" have long been used to characterize the relationship between institutions of higher education and the communities in which they reside. While these adversarial phrases reflect the ...

Bowman, Anne (Anne Renee)

2011-01-01T23:59:59.000Z

279

Global Distribution of Hot Towers in Tropical Cyclones Based on 11-Yr TRMM Data  

Science Conference Proceedings (OSTI)

Global distribution of hot towers in tropical cyclones (TCs) is statistically quantified using an 11-yr Tropical Rainfall Measuring Mission (TRMM) Tropical Cyclone Precipitation Feature (TCPF) database. From 6003 individual TRMM overpasses of 869 ...

Cheng Tao; Haiyan Jiang

2013-02-01T23:59:59.000Z

280

Surface and Tower Meteorological Instrumentation at Barrow (METTWR4H) Handbook  

Science Conference Proceedings (OSTI)

The Barrow meteorology station (BMET) uses mainly conventional in situ sensors mounted at four different heights (2m, 10m, 20m and 40m) on a 40 m tower to obtain profiles of wind speed, wind direction, air temperature, dew point and humidity. It also obtains barometric pressure, visibility and precipitation data from sensors at the base of the tower. Additionally, a Chilled Mirror Hygrometer and an Ultrasonic wind speed sensor are located near the 2m level for comparison purposes.

Ritsche, MT

2008-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "tower site tapajos" 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

Vertical sampling flights in support of the 1981 ASCOT cooling tower experiments: field effort and data  

DOE Green Energy (OSTI)

During the month of August 1981, three nights of experimental sampling of tracers released into the cooling tower plume of a geothermal power plant were conducted. In these experiments a tethered balloon was used to lift a payload so as to obtain vertical profiles of the cooling tower plume and the entrained tracers. A description of the equipment used, the field effort and the data acquired are presented here.

Gay, G.T.

1982-03-01T23:59:59.000Z

282

An Evaluation of Molten-Salt Power Towers Including Results of the Solar Two Project  

DOE Green Energy (OSTI)

This report utilizes the results of the Solar Two project, as well as continuing technology development, to update the technical and economic status of molten-salt power towers. The report starts with an overview of power tower technology, including the progression from Solar One to the Solar Two project. This discussion is followed by a review of the Solar Two project--what was planned, what actually occurred, what was learned, and what was accomplished. The third section presents preliminary information regarding the likely configuration of the next molten-salt power tower plant. This section draws on Solar Two experience as well as results of continuing power tower development efforts conducted jointly by industry and Sandia National Laboratories. The fourth section details the expected performance and cost goals for the first commercial molten-salt power tower plant and includes a comparison of the commercial performance goals to the actual performance at Solar One and Solar Two. The final section summarizes the successes of Solar Two and the current technology development activities. The data collected from the Solar Two project suggest that the electricity cost goals established for power towers are reasonable and can be achieved with some simple design improvements.

REILLY, HUGH E.; KOLB, GREGORY J.

2001-11-01T23:59:59.000Z

283

Studies on Mathematical Models for Characterizing Plume and Drift Behavior From Cooling Towers, Volume 1: Review of European Researc h  

Science Conference Proceedings (OSTI)

This report presents the results to date of an effort to develop, improve, and validate mathematical models of plume dispersion from individual and clustered mechanical- and natural-draft cooling towers. This effort is focusing on prediction of visible plume trajectory and deposition of saline droplet drift. The goal is to provide useful tools for assessing the environmental impact of cooling tower plumes. Volume 1 summarizes European research on cooling-tower-plume dispersion.

1981-01-01T23:59:59.000Z

284

Approximating the Seismic Amplification Effects Experienced by Solar Towers Mounted on the Rooftops of Low-Rise Industrial Buildings.  

E-Print Network (OSTI)

?? This thesis investigates the acceleration amplification experienced by solar towers mounted on the rooftops of low-rise industrial buildings during a seismic event. Specifically, this (more)

Balla, Peter Luiz

2013-01-01T23:59:59.000Z

285

Radiometric modeling of mechanical draft cooling towers to assist in the extraction of their absolute temperature from remote thermal imagery.  

E-Print Network (OSTI)

??Determination of the internal temperature of a mechanical draft cooling tower (MDCT) from remotely-sensed thermal imagery is important for many applications that provide input to (more)

Montanaro, Matthew

2009-01-01T23:59:59.000Z

286

Trinity Site - World's First Nuclear Explosion | Department of Energy  

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

Manhattan Project » Signature Manhattan Project » Signature Facilities » Trinity Site - World's First Nuclear Explosion Trinity Site - World's First Nuclear Explosion Trinity Site - World's First Nuclear Explosion The world's first nuclear explosion occurred on July 16, 1945, when a plutonium implosion device was tested at a site located 210 miles south of Los Alamos on the barren plains of the Alamogordo Bombing Range, known as the Jornada del Muerto. Inspired by the poetry of John Donne, J. Robert Oppenheimer code-named the test Trinity. Hoisted atop a 150-foot tower, the plutonium device, or Gadget, detonated at precisely 5:30 a.m. over the New Mexico desert, releasing 18.6 kilotons of power, instantly vaporizing the tower and turning the surrounding asphalt and sand into green glass.

287

Microsoft Word - CX-SpringCreek-WineCountry-TowerRelocationFY13_WEB.doc  

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

November 29, 2012 November 29, 2012 REPLY TO ATTN OF: KEPR-4 SUBJECT: Environmental Clearance Memorandum Justin Estes Project Manager - TELM-TPP-3 Proposed Action: Spring Creek - Wine County No. 1 Transmission Tower Relocation Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B4.6 Additions and modifications to transmission facilities Location: Multnomah County, OR Proposed by: Bonneville Power Administration (BPA) Description of the Proposed Action: BPA is proposing to relocate one transmission tower, located on private agricultural land, which has been damaged by farm equipment. Currently, tower 29/3 on BPA's Spring Creek - Wine Country No. 1 transmission line, resides on an agricultural access road that is bordered on both sides by active agricultural fields. This

288

Wind energy conversion. Volume IX. Aerodynamics of wind turbine with tower disturbances  

DOE Green Energy (OSTI)

Lifting line theory which is the counterpart of Prandtl's lifting line theory for rotating wing is employed for the overall performance analysis of a horizontal axis wind turbine rotor operating in a uniform flow. The wake system is modeled by non-rigid wake which includes the radial expansion and the axial retardation of trailing vortices. For the non-uniform flow which are caused by the ground, the tower reflection, or the tower shadow, the unsteady airloads acting on the turbine blade are computed, using lifting line theory and a non-rigid wake model. An equation which gives the wind profile in the tower shadow region is developed. Also, the equations to determine pitch angle control are derived to minimize the flapping moment variations or the thrust variations due to the non-uniform flow over a rotation.

Chung, S.Y.

1978-09-01T23:59:59.000Z

289

Tower Design Load Verification on a 1-kW Wind Turbine: Preprint  

DOE Green Energy (OSTI)

Wind turbine testing at the National Wind Technology Center (NWTC) has been done to characterize both tower top loads and thrust loads for small wind turbines, which is part of an ongoing effort to model and predict small wind turbine behavior and the resulting stresses imposed on the supporting tower. To these ends, a 1-kW furling wind turbine mounted on a 10-meter tower was instrumented and monitored via a data acquisition system for nearly a year. This test was conducted to verify the design loads as predicted by the simple design equations provided in the draft revision of the International Electrotechnical Commission (IEC) Small Wind Turbine Safety Standard 61400-02 CDV (hereafter called ''the draft Standard''). Data were captured for several operating conditions covered by the draft Standard. This paper addresses the collected data and what conclusions can be made from it.

Prascher, D.; Huskey, A.

2004-11-01T23:59:59.000Z

290

Thermodynamic modeling and optimization of a screw compressor chiller and cooling tower system  

E-Print Network (OSTI)

This thesis presents a thermodynamic model for a screw chiller and cooling tower system for the purpose of developing an optimized control algorithm for the chiller plant. The thermodynamic chiller model is drawn from the thermodynamic models developed by Gordon and Ng (1996). However, the entropy production in the compressor is empirically related to the pressure difference measured across the compressor. The thermodynamic cooling tower model is the Baker & Shryock cooling tower model that is presented in ASHRAE Handbook - HVAC Systems and Equipment (1992). The models are coupled to form a chiller plant model which can be used to determine the optimal performance. Two correlations are then required to optimize the system: a wet-bulb/setpoint correlation and a fan speed/pump speed correlation. Using these correlations, a "quasi-optimal" operation can be achieved which will save 17% of the energy consumed by the chiller plant.

Graves, Rhett David

2003-12-01T23:59:59.000Z

291

Nevada National Security Site Nuclear Testing Artifacts Become Part of U.S.  

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

Nevada National Security Site Nuclear Testing Artifacts Become Part Nevada National Security Site Nuclear Testing Artifacts Become Part of U.S. Cultural Archive Nevada National Security Site Nuclear Testing Artifacts Become Part of U.S. Cultural Archive April 1, 2012 - 12:00pm Addthis Stanchions are among the remnants of Smoky Tower. Stanchions are among the remnants of Smoky Tower. LAS VEGAS, NV - The Nevada National Security Site's (NNSS) historic Smoky site may soon join a long list of former nuclear testing locations eligible for inclusion in the National Register of Historic Places. The Desert Research Institute (DRI) is currently working alongside the Nevada Site Office (NSO) to determine the eligibility of Smoky and a number of other EM sites slated for cleanup and closure. "In the last year, we've conducted assessments at over 30 EM sites,"

292

US Department of Energy wind turbine candidate site program: the regulatory process  

DOE Green Energy (OSTI)

Sites selected in 1979 as tentative sites for installation of a demonstration MOD-2 turbine are emphasized. Selection as a candidate site in this program meant that the US Department of Energy (DOE) designated the site as eligible for a DOE-purchased and installed meteorological tower. The regulatory procedures involved in the siting and installation of these meteorological towers at the majority of the candidate sites are examined. An attempt is also made, in a preliminary fashion, to identify the legal and regulatory procedures that would be required to put up a turbine at each of these candidate sites. The information provided on each of these sites comes primarily from utility representatives, supplemented by conversations with state and local officials. The major findings are summarized on the following: federal requirements, state requirements, local requirements, land ownership, wind rights, and public attitudes.

Greene, M.R.; York, K.R.

1982-06-01T23:59:59.000Z

293

Cooling Water Systems - Energy Savings/Lower Costs By Reusing Cooling Tower Blowdown  

E-Print Network (OSTI)

Reuse of cooling tower blow down cannot only provide energy conservation, but can provide water conservation and chemical conservation. To be effective, it is critical that the water treatment program be coordinated with the treatment of the blow down for reuse into the cooling tower system. Several plants have been built and operated with considerable difficulty regarding effective operation of the softener due to improper chemical selection. However, other plants have utilized the proper chemicals which not only improve the softener's performance and operation, but also effectively reduces the size of the softener. Thus, initial capital and operating savings are obtained. Detailed information is provided on guidelines and case histories of operating units.

Puckorius, P. R.

1981-01-01T23:59:59.000Z

294

Elementary-Particle Propagation via 3-Scale ``Towers of Quartet Rings'' Within a Dyonic History Lattice  

E-Print Network (OSTI)

Massless elementary-particle propagation is represented historically (cosmologically) through 3-scale ``towers of quartet rings'' within a lattice of magneto-electrodynamically communicating ``pre-events''. The lightlike intervals within a ring of 4 pre-events (discrete ``closed string'') display transverse GUT-scale and longitudinal ``particle scale''. The lightlike (longitudinal) spacing between successive rings of a tower is at Planck scale. Ratio between GUT scale and Planck scale relates quantum-dynamically to elementary magnetic charge. Permutations of a ring quartet, in conjunction with Lorentz-group representations, control elementary-particle quantum numbers.

G. F. Chew

1999-01-28T23:59:59.000Z

295

Defective insulators in live working on a 550kV compact steel lattice tower  

Science Conference Proceedings (OSTI)

Research was conducted to determine the minimum number of healthy insulator units needed to ensure worker safety in live working on a compact 550 kV steel lattice tower. A large variety of worksite conditions was investigated. Test results confirm the conservative nature of the CIGRE formula for defective insulator units, and modifications to the formula are suggested. The recommended number of healthy units is 12 in a string of 24 units for the case of live work on the compact 550 kV tower, when the Portable Protective Gap (PPG) is used. Adjustment for altitude should be made above 900 m (3,000 ft).

Gela, G. [EPRI Power Delivery Center, Lenox, MA (United States); Kientz, H. [Western Area Power Administration, Golden, CO (United States); Fox, H.J. Jr. [Public Service Electric and Gas, Bridgewater, NJ (United States); Mitchell, J.D. [Alabama Power Co., Birmingham, AL (United States); Lyons, P.F. [EPRI, Haslet, TX (United States)

1997-04-01T23:59:59.000Z

296

Strategy for the Operation of Cooling Towers with variable Speed Fans  

E-Print Network (OSTI)

Within the SPS Cooling Water Project at CERN aimed at the reduction of water consumption, this primary open cooling loop will be closed and all the primary cooling circuit components will be upgraded to the new required duty and brought to the necessary safety and operability standards. In particular the tower fans will be fitted with variable frequency drives to replace the existing two speed motors. This paper presents a study to optimize the operation of SPS cooling towers taking into account outdoor conditions (wet and dry bulb temperatures) and the entirety of the primary circuit in which they will operate.

Iigo-Golfn, J

2001-01-01T23:59:59.000Z

297

Near-Neutral Surface Layer Turbulence at the Boulder Atmospheric Observatory Tower: Evidence of Increasing Vertical Turbulence with Height  

Science Conference Proceedings (OSTI)

Wind and turbulence profiles were analyzed during breezy, near-neutral conditions at the Boulder Atmospheric Observatory tower to quantify the effects of an abrupt 20- to 30-m increase in terrain located 35 km west of the tower. Results indicate ...

Brent M. Bowen

2000-05-01T23:59:59.000Z

298

Young Jack Pine Site  

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

NSA-YJP) The hut, tent, and dirt road from the flux tower The sun photometer on top of the hut The bottom of the YJP flux tower NSA-YJP taken at a low sun angle to show the subtle...

299

Gaskell Sun Tower and 2 others Solar Power Plant | Open Energy Information  

Open Energy Info (EERE)

Gaskell Sun Tower and 2 others Solar Power Plant Gaskell Sun Tower and 2 others Solar Power Plant Jump to: navigation, search Name Gaskell Sun Tower and 2 others Solar Power Plant Facility Gaskell Sun Tower and 2 others Sector Solar Facility Type Concentrating Solar Power Facility Status Proposed Developer NRG Energy/eSolar Location Kern County, California Coordinates 35.4937274°, -118.8596804° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":35.4937274,"lon":-118.8596804,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

300

Experimental Study on Energy Efficiency of Heat-source Tower Heat Pump Units in Winter Condition  

Science Conference Proceedings (OSTI)

Building energy consumption in China has been increasing rapidly. And a small increase in the operation efficiency of the air-conditioning system can substantially decrease it. In this paper a new type heat pump is developed to improve the performance ... Keywords: Heat-source tower, Heat pump, Seasonal energy efficiency ratio(SEER), Hermal properties

Li Nianping; Zhang Wenjie; Wang Lijie; Liu Qiuke; Hu Jinhua

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tower site tapajos" 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

The Passage of a Weak Thunderstorn Downburst over an Instrumented Tower  

Science Conference Proceedings (OSTI)

On 5 November 1977 a weak downburst associated with a multicell storm passed over an instrumented tower at Bald Hills, a suburb of Brisbane, Australia. Associated with the thunderstorm was a dome of cold air estimated to be 1200 to 1800 m deep. ...

Douglas J. Sherman

1987-06-01T23:59:59.000Z

302

Sea-Tower Measurements of Wind-Wave Spectra in the Caspian Sea  

Science Conference Proceedings (OSTI)

High frequency spectra of wind generated waves corresponding to mean wind speeds from 3.5 to 13.5 m s?1 were measured at the research tower in the Caspian Sea. The techniques used made it possible to evaluate spectra S(?) in the frequency range ...

I. A. Leykin; A. D. Rozenberg

1984-01-01T23:59:59.000Z

303

An iterative solution to the four-peg Tower of Hanoi problem  

Science Conference Proceedings (OSTI)

One of the variations of the Towers of Hanoi puzzle allows for p pegs, and for four pegs the solution to this variation is shown to have a simple structure which can be used to derive an iterative solution to the problem.

Appie van de Liefvoort

1990-01-01T23:59:59.000Z

304

The Vibration Frequencies of Wind Turbine Steel Tower by Transfer Matrix Method  

Science Conference Proceedings (OSTI)

Large-scale wind turbine structure is simplified as a slender cantilever beam with variable sections subject to complex loads configuration. An analytical procedure to estimate not only natural frequencies but also vibration mode shapes of thin-walled ... Keywords: horizontal axis wind turbine tower, natural frequency, transfer matrix method, free vibration

Wang Meng; Wang Zhangqi

2011-01-01T23:59:59.000Z

305

Study of Operating Control Strategies for Hybrid Ground Source Heat Pump System with Supplemental Cooling Tower  

Science Conference Proceedings (OSTI)

Ground source heat pump for cooling-dominated commercial buildings may utilize supplemental cooling towers to reduce system first cost and to improve system performance. The use of hybrid ground source heat pump (HGSP) can reduce the size of the ground-loop ... Keywords: hybrid ground source heat pump, supplement heat rejection, control strategies, operating performance

Wang Jinggang; Gao Xiaoxia; Yin Zhenjiang; Li Fang

2009-07-01T23:59:59.000Z

306

The Binary Cooling Tower Process: An Energy Conserving Water Reuse Technology  

E-Print Network (OSTI)

The Binary Cooling Tower (BCT) harnesses cooling system waste heat to accomplish concentration of waste and process streams. The BCT can also be integrated to isolate and improve the efficiency of critical cooling loops. This paper describes the BCT, its integration into a cooling system, and some energy saving applications

Lancaster, R. L.; Sanderson, W. G.; Cooke, R. L., Jr.

1981-01-01T23:59:59.000Z

307

Marginal Hilbert Spectrum Based on EMD Reconstruction and its Application in Fault Diagnosis of Cooling Tower  

Science Conference Proceedings (OSTI)

HHT (Hilbert-Huang Transform) is one kind of adaptive signal processing method and it is suitable for processing nonlinear and non-stationary signal. Amplitude-frequency characteristics of signal are accurately demonstrated through marginal Hilbert spectrum ... Keywords: Vibration signal, marginal Hilbert spectrum, Reconstruction filter, Fault diagnosis, Cooling tower

He Dhengyun, Yi Ding

2013-01-01T23:59:59.000Z

308

Wind Tunnel Experiment for Predicting a Visible Plume Region from a Nuclear Power Plant Cooling Tower  

Science Conference Proceedings (OSTI)

The current paper introduces a wind tunnel experiment to study the effect of the cooling tower of a Nuclear Power Plant (NPP) on the flow and the characteristics of visible plume regions. The relevant characteristics of the flow field near the ...

Guo Dong-peng; Yao Ren-tai; Fan Dan

309

Eastgate seen from the south-east, in front of Harare's glass and concrete towers  

E-Print Network (OSTI)

Eastgate seen from the south-east, in front of Harare's glass and concrete towers #12;Eastgate officesEastgate offices Level two #12;Sections showing the passive cooling system #12;Cooling the office the degree of internal cooling achieved during April 1998 #12;· The termitary model · The termitary is an i f

Behmer, Spencer T.

310

A Design for Unattended Monitoring of Carbon Dioxide on a Very Tall Tower  

Science Conference Proceedings (OSTI)

Unattended measurements of carbon dioxide (CO2) mixing ratio at three altitudes up to 496 m above the surface on a television transmitter tower in the southeastern United States have been made for a period of 4 yr. This report describes the ...

Cong Long Zhao; Peter S. Bakwin; Pieter P. Tans

1997-10-01T23:59:59.000Z

311

New Ozone Measurement Systems for Autonomous Operation on Ocean Buoys and Towers  

Science Conference Proceedings (OSTI)

Two autonomous ozone measurement systems for use on ocean buoys and towers have been built and are discussed herein. They are based on low-power atmospheric ozone sensors from Physical Sciences Inc. (PSI) and 2B Technologies. The PSI sensor ...

E. J. Hintsa; G. P. Allsup; C. F. Eck; D. S. Hosom; M. J. Purcell; A. A. Roberts; D. R. Scott; E. R. Sholkovitz; W. T. Rawlins; P. A. Mulhall; K. Lightner; W. W. McMillan; J. Song; M. J. Newchurch

2004-07-01T23:59:59.000Z

312

Conceptual Design of a 100 MWe Modular Molten Salt Power Tower Plant  

DOE Green Energy (OSTI)

A conceptual design of a 100 MWe modular molten salt solar power tower plant has been developed which can provide capacity factors in the range of 35 to 75%. Compared to single tower plants, the modular design provides a higher degree of flexibility in achieving the desired customer's capacity factor and is obtained simply by adjusting the number of standard modules. Each module consists of a standard size heliostat field and receiver system, hence reengineering and associated unacceptable performance uncertainties due to scaling are eliminated. The modular approach with multiple towers also improves plant availability. Heliostat field components, receivers and towers are shop assembled allowing for high quality and minimal field assembly. A centralized thermal-storage system stores hot salt from the receivers, allowing nearly continuous power production, independent of solar energy collection, and improved parity with the grid. A molten salt steam generator converts the stored thermal energy into steam, which powers a steam turbine generator to produce electricity. This paper describes the conceptual design of the plant, the advantages of modularity, expected performance, pathways to cost reductions, and environmental impact.

James E. Pacheco; Carter Moursund, Dale Rogers, David Wasyluk

2011-09-20T23:59:59.000Z

313

Application of a Cloud Model to Cooling Tower Plumes and Clouds  

Science Conference Proceedings (OSTI)

A steady-state, one-dimensional cloud model has been modified to simulate the growth of plumes (both wet and dry) and clouds from natural and forced draft cooling towers. The modifications to the cloud model are discussed and comparisons are made ...

Harold D. Orville; John H. Hirsch; Laurence E. May

1980-11-01T23:59:59.000Z

314

ROUGHNESS LENGTHS FOR THE SAVANNAH RIVER SITE  

SciTech Connect

Surface roughness values for the areas surrounding the H, D and N-Area meteorological towers were computed from archived 2010 meteorological data. These 15-minute-averaged data were measured with cup anemometers and bidirectional wind vanes (bivanes) 61 m above the surface. The results of the roughness calculation using the standard deviation of elevation angle {sigma}{sub E}, and applying the simple formula based on tree canopy height, gave consistent estimates for roughness around the H-Area tower in the range of 1.76 to 1.86 m (95% confidence interval) with a mean value of 1.81 m. Application of the {sigma}{sub E} method for the 61-m level at D and N-Areas gave mean values of 1.71 and 1.81 with confidence ranges of 1.62-1.81 and 1.73-1.88 meters, respectively. Roughness results are azimuth dependent, and thus are presented as averages over compass sectors spanning 22.5 degrees. Calculated values were compared to other methods of determining roughness, including the standard deviation of the azimuth direction, {sigma}{sub A}, and standard deviation of the wind speed, {sigma}{sub U}. Additional data was obtained from a sonic anemometer at 61-m on the H-Area tower during a period of a few weeks in 2010. Results from the sonic anemometer support our use of {sigma}{sub E} to calculate roughness. Based on the H-Area tower results, a surface roughness of 1.8 m using is recommended for use in dispersion modeling applications that consider the impacts of a contaminant release to individuals along the Site boundary. The canopy surrounding the H-Area tower is relatively uniform (i.e., little variance in roughness by upwind direction), and data supplied by the U.S. Forest Service at Savannah River show that the canopy height and composition surrounding the H-Area tower is reasonably representative of forested areas throughout the SRS reservation. For dispersion modeling analyses requiring assessments of a co-located worker within the respective operations area, recommended area-specific values range from 0.3 m for E Area to 0.7 m for A Area at the Savannah River National Laboratory. These area-specific values, summarized in Table 4-1, were determined using the Environmental Protection Agency's AERSURFACE computer algorithm.

Hunter, C.

2012-03-28T23:59:59.000Z

315

Evaluating runoff simulations from the Community Land Model 4.0 using observations from flux towers and a mountainous watershed  

SciTech Connect

Previous studies using the Community Land Model (CLM) focused on simulating landatmosphere interactions and water balance at continental to global scales, with limited attention paid to its capability for hydrologic simulations at watershed or regional scales. This study evaluates the performance of CLM 4.0 (CLM4) for hydrologic simulations, and explores possible directions of improvement. Specifically, it is found that CLM4 tends to produce unrealistically large temporal variation of runoff for applications at a mountainous catchment in the Northwest United States where subsurface runoff is dominant, as well as at a few flux tower sites. We show that runoff simulations from CLM4 can be improved by: (1) increasing spatial resolution of the land surface representations; (2) calibrating parameter values; (3) replacing the subsurface formulation with a more general nonlinear function; (4) implementing the runoff generation schemes from the Variability Infiltration Capacity (VIC) model. This study also highlights the importance of evaluating both the energy and water fluxes application of land surface models across multiple scales.

Li, Hongyi; Huang, Maoyi; Wigmosta, Mark S.; Ke, Yinghai; Coleman, Andre M.; Leung, Lai-Yung R.; Wang, Aihui; Ricciuto, Daniel M.

2011-12-24T23:59:59.000Z

316

Design considerations for concentrating solar power tower systems employing molten salt.  

DOE Green Energy (OSTI)

The Solar Two Project was a United States Department of Energy sponsored project operated from 1996 to 1999 to demonstrate the coupling of a solar power tower with a molten nitrate salt as a heat transfer media and for thermal storage. Over all, the Solar Two Project was very successful; however many operational challenges were encountered. In this work, the major problems encountered in operation of the Solar Two facility were evaluated and alternative technologies identified for use in a future solar power tower operating with a steam Rankine power cycle. Many of the major problems encountered can be addressed with new technologies that were not available a decade ago. These new technologies include better thermal insulation, analytical equipment, pumps and values specifically designed for molten nitrate salts, and gaskets resistant to thermal cycling and advanced equipment designs.

Moore, Robert Charles; Siegel, Nathan Phillip; Kolb, Gregory J.; Vernon, Milton E.; Ho, Clifford Kuofei

2010-09-01T23:59:59.000Z

317

Current and Future Costs for Parabolic Trough and Power Tower Systems in the US Market: Preprint  

DOE Green Energy (OSTI)

NREL's Solar Advisor Model (SAM) is employed to estimate the current and future costs for parabolic trough and molten salt power towers in the US market. Future troughs are assumed to achieve higher field temperatures via the successful deployment of low melting-point, molten-salt heat transfer fluids by 2015-2020. Similarly, it is assumed that molten salt power towers are successfully deployed at 100MW scale over the same time period, increasing to 200MW by 2025. The levelized cost of electricity for both technologies is predicted to drop below 11 cents/kWh (assuming a 10% investment tax credit and other financial inputs outlined in the paper), making the technologies competitive in the marketplace as benchmarked by the California MPR. Both technologies can be deployed with large amounts of thermal energy storage, yielding capacity factors as high as 65% while maintaining an optimum LCOE.

Turchi, C.; Mehos, M.; Ho, C. K.; Kolb, G. J.

2010-10-01T23:59:59.000Z

318

Current and future costs for parabolic trough and power tower systems in the US market.  

SciTech Connect

NREL's Solar Advisor Model (SAM) is employed to estimate the current and future costs for parabolic trough and molten salt power towers in the US market. Future troughs are assumed to achieve higher field temperatures via the successful deployment of low melting-point, molten-salt heat transfer fluids by 2015-2020. Similarly, it is assumed that molten salt power towers are successfully deployed at 100MW scale over the same time period, increasing to 200MW by 2025. The levelized cost of electricity for both technologies is predicted to drop below 11 cents/kWh (assuming a 10% investment tax credit and other financial inputs outlined in the paper), making the technologies competitive in the marketplace as benchmarked by the California MPR. Both technologies can be deployed with large amounts of thermal energy storage, yielding capacity factors as high as 65% while maintaining an optimum LCOE.

Turchi, Craig (National Renewable Energy Laboratory, Golden, CO); Kolb, Gregory J.; Mehos, Mark Steven (National Renewable Energy Laboratory, Golden, CO); Ho, Clifford Kuofei

2010-08-01T23:59:59.000Z

319

Proposal for the award of a contract for the upgrade of the SPS cooling towers  

E-Print Network (OSTI)

This document concerns the award of a contract for the upgrade of the SPS cooling towers. Following a market survey carried out among 56 firms in sixteen Member States, a call for tenders (IT-2740/ST/SPS) was sent on 14 February 2000 to 10 firms in six Member States. By the closing date, CERN had received seven tenders from seven firms. The Finance Committee is invited to agree to the negotiation of a contract with SPIG (IT), the lowest bidder, for the upgrade of the SPS cooling towers, for an amount of 1 073 757 Swiss francs, not subject to revision. SPIG has indicated the following distribution by country of the contract value covered by this adjudication proposal: IT-73%; FI-24%; DE-3%.

2000-01-01T23:59:59.000Z

320

Proposal for the award of a contract for the construction of cooling-tower structures  

E-Print Network (OSTI)

This document concerns the award of a contract for the construction of reinforced-concrete cooling-tower structures at LHC Point 1. Following a market survey carried out among 79 firms in 17 Member States, a call for tenders (IT-2710/ST/LHC) was sent on 13 August 1999 to eight firms and two consortia, both consisting of three firms, in eight Member States. By the closing date, CERN had received four tenders. The Finance Committee is invited to agree to the negotiation of a contract for the construction of reinforced-concrete cooling towers at LHC Point 1 with the consortium PAT (AT), BARESEL (DE) and ZSCHOKKE LOCHER (CH), the lowest bidder complying with the specification, for an amount of 3 393 493 Swiss francs, not subject to revision. The consortium has indicated the following distribution by country of the supply covered by this adjudication proposal: BE-60%, AT-18%, CH-11% and DE-11%.

1999-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tower site tapajos" 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

LOOP CALCULUS AND BELIEF PROPAGATION FOR Q-ARY ALPHABET: LOOP TOWER  

Science Conference Proceedings (OSTI)

Loop calculus introduced in [1], [2] constitutes a new theoretical tool that explicitly expresses symbol Maximum-A-Posteriori (MAP) solution of a general statistical inference problem via a solution of the Belief Propagation (BP) equations. This finding brought a new significance to the BP concept, which in the past was thought of as just a loop-free approximation. In this paper they continue a discussion of the Loop Calculus, partitioning the results into three Sections. In Section 1 they introduce a new formulation of the Loop Calculus in terms of a set of transformations (gauges) that keeping the partition function of the problem invariant. The full expression contains two terms referred to as the 'ground state' and 'excited states' contributions. The BP equations are interpreted as a special (BP) gauge fixing condition that emerges as a special orthogonality constraint between the ground state and excited states, which also selects loop contributions as the only surviving ones among the excited states. In Section 2 they demonstrate how the invariant interpretation of the Loop Calculus, introduced in Section 1, allows a natural extension to the case of a general q-ary alphabet, this is achieved via a loop tower sequential construction. The ground level in the tower is exactly equivalent to assigning one color (out of q available) to the 'ground state' and considering all 'excited' states colored in the remaining (q-1) colors, according to the loop calculus rule. Sequentially, the second level in the tower corresponds to selecting a loop from the previous step, colored in (q-1) colors, and repeating the same ground vs excited states splitting procedure into one and (q-2) colors respectively. The construction proceeds till the full (q-1)-levels deep loop tower (and the corresponding contributions to the partition function) are established. In Section 3 they discuss an ultimate relation between the loop calculus and the Bethe-Free energy variational approach of [3].

CHERTKOV, MICHAEL [Los Alamos National Laboratory; CHERNYAK, VLADIMIR [Los Alamos National Laboratory

2007-01-10T23:59:59.000Z

322

Establishing Tower-Top Equipotential Zones--Case-Study of Incidents  

Science Conference Proceedings (OSTI)

The Occupational Safety and Health Administration (OSHA) requires employers to provide protection and training for workers who perform work on de-energized and energized lines. This Technical Update report contains the draft script of a new training video on DVD under development on establishing tower-top equipotential zones. The script contains case studies and analysis of specific selected incidents that have occurred in the field. It also includes recommendations for minimizing risks and avoiding elec...

2008-11-30T23:59:59.000Z

323

Evaluation of cooling tower and wastewater treatment operations at the Great Plains Coal Gasification Plant  

Science Conference Proceedings (OSTI)

The objective of this study was to provide a technical assessment of the Great Plains Coal Gasification Plant Wastewater Treatment System. This Scope of Work consisted of five primary tasks described as follows: Task 1 - Determine the quantity of hydantoins in the stripped gas liquor (SGL), their precursors, and the kinetics of their formation in condensed liquor for the Great Plains Gasification Associates (GPGA) gasification facility. The University of North Dakota Energy Research Center (UNDERC) has measured a high concentration of hydantoins in the gas liquor from their slagging gasifier. UNDERC has tested the use of SGL in a pilot cooling tower and they witnessed some adverse effects in the cooling tower and heat exchanger systems. Task 2 - Investigate the adverse Department of Energy (DOE) findings at UNDERC with regard to corrosion, foaming, biological and organic fouling, chemical attack on concrete and organic emissions resulting from the use of SGL in a pilot plant cooling tower. Task 3 - Validate the heat load on the cooling tower for both summer and winter operation and determine the adequacy of the surge pond to store the maximum predicted amount of excess water accumulated during winter operation. Task 4 - Assess potential fouling, foaming and organic carry-over problems associated with operability of the multiple-effect evaporator and develop recommendations on possible alternate use of evaporator condensate to alleviate possible problems in disposing of excess wastewater. Task 5 - Provide DOE with recommendations on the wastewater treatment backup design and test program already committed to by GPGA. This paper presents Fluor's findings regarding the five primary tasks. 12 refs., 4 figs., 15 tabs.

Lang, R.A.

1984-12-01T23:59:59.000Z

324

Some Views On Hot Towers after 50 Years of Tropical Field Programs and Two Years of TRMM Data  

Science Conference Proceedings (OSTI)

The hot tower hypothesis requires the existence of deep cumulonimbus clouds in the deep Tropics as essential agents, which accomplish the mass and energy transport essential for the maintenance of the general circulation. As the role of the ...

Edward J. Zipser

2003-01-01T23:59:59.000Z

325

Annual Forcing of the Surface Radiation Balance Diurnal Cycle Measured from a High Tower near Boulder, Colorado  

Science Conference Proceedings (OSTI)

The radiation balance consisting of upward and downward components of solar and thermal infrared broadband irradiances is continuously measured from the top of a 300-m tower situated on the Colorado high plains. The data are representative of a ...

Ellsworth G. Dutton

1990-12-01T23:59:59.000Z

326

Effects of adding wash tower effluent to Ano Liossia landfill to enhance bioreaction c by Olympia Galenianou.  

E-Print Network (OSTI)

A theoretical study was performed on the effects of adding sulfate-rich wash tower effluent from the Athens hospital waste incinerator to the Ano Liossia landfill of Athens. The method of mass balance was used to examine ...

Galenianou, Olympia

2006-01-01T23:59:59.000Z

327

ERDA test facilities, East Mesa Test Site. Geothermal resource investigations, Imperial Valley, California  

DOE Green Energy (OSTI)

Detailed specifications which must be complied with in the construction of the ERDA Test Facilities at the East Mesa Site for geothermal resource investigations in Imperial Valley, California are presented for use by prospective bidders for the construction contract. The principle construction work includes a 700 gpm cooling tower with its associated supports and equipment, pipelines from wells, electrical equipment, and all earthwork. (LCL)

Not Available

1976-01-01T23:59:59.000Z

328

Hybrid power towers: A solar boost for natural gas in the Southwest  

SciTech Connect

A new concept to combine central receiver technology with highly efficient natural gas turbines has sparked interest among key utilities in the southwestern United States. The result is a fully dispatchable hybrid power tower that`s expected to use 30% less natural gas than its conventional counterpart. Developed by researcher at the US DOE`s National Renewable Energy Laboratory (NREL), the hybrid power tower is the focus of a developing partnership with the Sacramento Municipal Utility District (SMUD) in California. Although some solar advocates criticize the use of nonrenewable natural gas, the hybrid concept mitigates many of the current barriers to commercializing solar thermal technology. NREL`s innovative concept uses a small central receiver plant to preheat combustion air for natural gas turbines. Solar thermal energy displaces the use of nonrenewable fossil fuel throughout much of the day. When solar heat is no longer available, the natural gas turbines ensure continuous operation to meet a utility`s need for baseload, intermediate, or peaking power, as desired. The combined-cycle power tower has many attractive features, but the bottom line is it can be commercialized in today`s utility market.

Brown, L.R. [National Renewable Energy Lab., Golden, CO (United States)

1995-08-01T23:59:59.000Z

329

The Worlds First Ever Cooling Tower Acceptance Test Using Process Data Reconciliation  

Science Conference Proceedings (OSTI)

The cooling capacity of cooling towers is influenced by multiple constructive and atmospheric parameters in a very complex way. This leads to strong variations of the measured cold-water temperature and causes unacceptable unreliability of conventional acceptance tests, which are based on single point measurements. In order to overcome this lack of accuracy a new approach to acceptance test based on process data reconciliation has been developed by BTB Jansky and applied at a nuclear power plant. This approach uses process data reconciliation according to VDI 2048 to evaluate datasets over a long period covering different operating conditions of the cooling tower. Data reconciliation is a statistical method to determine the true process parameters with a statistical probability of 95% by considering closed material-, mass-and energy balances. Datasets which are not suitable for the evaluation due to strong transient gradients are excluded beforehand, according to well-defined criteria. The reconciled cold-water temperature is then compared, within a wet bulb temperature range of 5 deg. C to 20 deg. C to the manufacturer's guaranteed temperature. Finally, if the average deviation between reconciled and guaranteed value over the evaluated period is below zero, the cooling tower guarantee is fulfilled. (authors)

Magnus Langenstein; Jan Hansen-Schmidt [BTB-Jansky GmbH, Gerlingerstrasse 151, D-71229 Leonberg (Germany)

2006-07-01T23:59:59.000Z

330

Dehumidification of air by aqueous triethylene glycol solution in a spray tower  

SciTech Connect

A spray tower in the absorber-stripper system has been designed to study the absorption of water vapor from moist air by contact with aqueous solutions that contained from 87.7 to 95.2% triethylene glycol (TEG). The design of a U-shape air tunnel with eliminators in the absorber and stripper is to prevent the carryover of the solution and to increase the absorption rate and the regeneration rate. This spray tower was capable of handling air flow rates from 1.94 to 3.77 kg/min and liquid flow rates from 2.17 to 3.,31 kg/min. Under the operating conditions of this study, the overall mass transfer coefficients calculated from the experimental data of 95.2% TEG solution varied from /1.78 to 1.95 mol/m{sup 3}s. These corresponded to the heights of a transfer unit of 0.63 to 0.38 m, respectively. The efficiencies of the spray tower typically varied from 64 to 86%.

Chung, T.W.; Wu, H. [Chung-Yuan Christian Univ., Chungli (Taiwan, Province of China). Chemical Engineering Dept.

1998-06-01T23:59:59.000Z

331

Molten Salt Power Tower Cost Model for the System Advisor Model (SAM)  

DOE Green Energy (OSTI)

This report describes a component-based cost model developed for molten-salt power tower solar power plants. The cost model was developed by the National Renewable Energy Laboratory (NREL), using data from several prior studies, including a contracted analysis from WorleyParsons Group, which is included herein as an Appendix. The WorleyParsons' analysis also estimated material composition and mass for the plant to facilitate a life cycle analysis of the molten salt power tower technology. Details of the life cycle assessment have been published elsewhere. The cost model provides a reference plant that interfaces with NREL's System Advisor Model or SAM. The reference plant assumes a nominal 100-MWe (net) power tower running with a nitrate salt heat transfer fluid (HTF). Thermal energy storage is provided by direct storage of the HTF in a two-tank system. The design assumes dry-cooling. The model includes a spreadsheet that interfaces with SAM via the Excel Exchange option in SAM. The spreadsheet allows users to estimate the costs of different-size plants and to take into account changes in commodity prices. This report and the accompanying Excel spreadsheet can be downloaded at https://sam.nrel.gov/cost.

Turchi, C. S.; Heath, G. A.

2013-02-01T23:59:59.000Z

332

Economic evaluation of solar-only and hybrid power towers using molten salt technology  

DOE Green Energy (OSTI)

Several hybrid and solar-only configurations for molten-salt power towers were evaluated with a simple economic model, appropriate for screening analysis. The solar specific aspects of these plants were highlighted. In general, hybrid power towers were shown to be economically superior to solar-only plants with the same field size. Furthermore, the power-booster hybrid approach was generally preferred over the fuel-saver hybrid approach. Using today`s power tower technology, economic viability for the solar power-boost occurs at fuel costs in the neighborhood of $2.60/MBtu to $4.40/ MBtu (low heating value) depending on whether coal-based or gas-turbine-based technology is being offset. The cost Of CO[sub 2] avoidance was also calculated for solar cases in which the fossil fuel cost was too low for solar to be economically viable. The avoidance costs are competitive with other proposed methods of removing CO[sub 2] from fossil-fired power plants.

Kolb, G.J.

1996-12-01T23:59:59.000Z

333

Stability and Turbulence in the Atmospheric Boundary Layer: A Comparison of Remote Sensing and Tower Observations  

Science Conference Proceedings (OSTI)

When monitoring winds and atmospheric stability for wind energy applications, remote sensing instruments present some advantages to in-situ instrumentation such as larger vertical extent, in some cases easy installation and maintenance, measurements of vertical humidity profiles throughout the boundary layer, and no restrictions on prevailing wind directions. In this study, we compare remote sensing devices, Windcube lidar and microwave radiometer, to meteorological in-situ tower measurements to demonstrate the accuracy of these measurements and to assess the utility of the remote sensing instruments in overcoming tower limitations. We compare temperature and wind observations, as well as calculations of Brunt-Vaisala frequency and Richardson numbers for the instrument deployment period in May-June 2011 at the U.S. Department of Energy National Renewable Energy Laboratory's National Wind Technology Center near Boulder, Colorado. The study reveals that a lidar and radiometer measure wind and temperature with the same accuracy as tower instruments, while also providing advantages for monitoring stability and turbulence. We demonstrate that the atmospheric stability is determined more accurately when the liquid-water mixing ratio derived from the vertical humidity profile is considered under moist-adiabatic conditions.

Friedrich, K.; Lundquist, J. K.; Aitken, M.; Kalina, E. A.; Marshall, R. F.

2012-01-01T23:59:59.000Z

334

Pantex Site  

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

Pantex Site Pantex Site The primary mission of the Pantex Plant is the assembly, disassembly, testing, and evaluation of nuclear wespons in support of the NNSA stockpile...

335

Program on Technology Innovation: Review of Advanced Cooling Tower Technologies with Reduced Cooled Water Temperature and Evaporatio  

Science Conference Proceedings (OSTI)

This report reviews current technologies and solutions for advanced cooling towers with reduced cooled water temperature and evaporation losses. This is the first report for the dew-point cooling tower fill development project, funded by the Electric Power Research Institute (EPRI) Program on Technology Innovation, Water Conservation program. It is prepared by the Gas Technology Institute (GTI).This review is based on a literature and patent survey; it summarizes advancements in cooling ...

2013-03-29T23:59:59.000Z

336

WindPACT Rotor Design Study: Hybrid Tower Design; Period of Performance: 29 June 2000 -- 28 February 2004  

DOE Green Energy (OSTI)

The cost of a wind turbine tower can represent as much as 20% of the cost of an entire megawatt-scale horizontal axis wind turbine (HAWT) and as much as 10% of the total cost of energy. The tower is a major cost component, and its design is important: Its structural properties are key to the response of the rotor; its height determines the wind regime that the rotor experiences; it allows access to the turbine nacelle and rotor; and it houses components of the electrical connection and the control and protection systems. Most large wind turbines installed in the United States use self-supporting steel tubular towers. The diameter of these tubes is limited by the size that can be transported by road (approximately 4.3 m). The base dimensions of a truss tower are not restrained by this limit, but trusses may require more maintenance. Guyed tube towers have been used, but they represent additional foundation costs and inconvenience. Addressing these limitations may lead to an alternative that avoids the problems. For this reason, the WindPACT Rotor Design Study was modified to include a study of a hybrid tower to determine the technical and economic feasibility of such a design.

Malcolm, D. J.

2004-04-01T23:59:59.000Z

337

Optimizing Cooling Tower Performance Refrigeration Systems, Chemical Plants, and Power Plants All Have A Resource Quietly Awaiting Exploitation-Cold Water!!  

E-Print Network (OSTI)

Cooling towers, because of their seeming simplicity, are usually orphans of the facilities operation. We are all aware that cooling towers are the step-children of the chemical process plant, electric power generating station, and refrigeration system. While engineers are pretty well convinced of the importance of their sophisticated equipment, and rightly so, they take the cooling towers and the cold water returning from them for granted. Design Conditions are specified for the particular requirements before a cooling tower is purchased. This relates to the volume of circulating water, hot water temperature on the tower, cold water discharge, and wet bulb temperature (consisting of ambient temperature and relative humidity). After the tower is put on the line and the cold water temperature or volume becomes inadequate, engineers look to solutions other than the obvious. While all cooling towers are purchased to function at 100% of capability in accordance with the required Design Conditions, in actual on-stream employment, the level of operation many times is lower, downwards to as much as 50% due to a variety of reasons: 1. The present service needed is now greater than the original requirements which the tower was purchased for. 2. Slippage due to usage and perhaps deficient maintenance has reduced the performance of the tower over years of operation. 3. The installation could have been originally undersized due to the low bidder syndrome. 4. New plant expansion needs additional water volume and possibly colder temperatures off the tower.

Burger, R.

1991-06-01T23:59:59.000Z

338

Optimizing Cooling Tower Performance- Refrigeration Systems, Chemical Plants, and Power Plants all Have A Resource Quietly Awaiting Exploitation-Cold Water!!  

E-Print Network (OSTI)

Cooling towers, because of their seeming simplicity, are usually orphans of the facilities operation. We are all aware that cooling towers are the step-children of the chemical process plant, electric power generating station, and refrigeration system. While engineers are pretty well convinced of the importance of their sophisticated equipment, and rightly so, they take the cooling towers and the cold water returning from them for granted. Design Conditions are specified for the particular requirements before a cooling tower is purchased. This relates to the volume of circulatlng water, hot water temperature on the tower, cold water temperature discharge, and wet bulb temperature (consisting of ambient temperature and relative humidity). After the tower is put on the line and the cold water temperature or volume becomes inadequate, engineers look to solutions other than the obvious. While all cooling towers are purchased to function at 100% of capability in accordance with the required Design Conditions, in actual on-stream employment, the level of operation many times is lower, downwards to as much as 50% due to a variety of reasons: 1. The present service needed is now greater than the original requirements which the tower was purchased for. 2. "Slippage" due to usage and perhaps deficient maintenance has reduced the performance of the tower over years of operation. 3. The installation could have been originally undersized due to the low bidder syndrome (1). 4. New plant expansion needs additional water volume and possibly colder temperatures off the tower.

Burger, R.

1990-06-01T23:59:59.000Z

339

Large Amplitude Spatial and Temporal Gradients in Atmospheric Boundary Layer CO2 Mole Fractions Detected With a Tower-Based Network in the U.S. Upper Midwest  

Science Conference Proceedings (OSTI)

This study presents observations of atmospheric CO{sub 2} mole fraction from a nine-tower, regional network deployed during the North American Carbon Program's Mid-Continent Intensive during 2007-2009. Within this network in a largely agricultural area, mean atmospheric CO{sub 2} gradients were strongly correlated with both ground-based inventory data and estimates from satellite remote sensing. The average seasonal drawdown for corn-dominated sites (35 ppm) is significantly larger than has been observed at other continental boundary layer sites. Observed growing-season median CO{sub 2} gradients are strongly dependent on local flux. The gradients between cross-vegetation site-pairs, for example, average 2.0 ppm/100 km, four times larger than the similar-vegetation site-pair average. Daily-timescale gradients are as large as 5.5 ppm/100 km, but dominated by advection rather than local flux. Flooding in 2008 led to a region-wide 23 week delay in growing-season minima. The observations show that regional-scale CO{sub 2} mole fraction networks yield large, coherent signals governed largely by regional sources and sinks of CO{sub 2}.

Miles, Natasha; Richardson, S. J.; Davis, Kenneth J.; Lauvaux, Thomas; Andrews, A.; West, Tristram O.; Bandaru, Varaprasad; Crosson, Eric R.

2012-02-21T23:59:59.000Z

340

Southwestern Power Administration site environmental report: Tulsa, Oklahoma, Williams Center Tower I, January 1, 1995--December 31, 1995  

DOE Green Energy (OSTI)

During CY 1995, Southwestern was not involved in any programs that had a direct effect on the environment, involving endangered species, protection of wetlands, or increased electromagnetic radiation. Southwestern continued to function throughout the year in an operations and maintenance posture with minor substation projects. Southwestern received two DOE audits, March 1991 and 1993. Southwestern has worked diligently on the DOE approved action plan and has completed the required report. The audits provided the Secretary, DOE Headquarters, and Southwestern an indication of the status of Southwestern management`s effectiveness in discharging its duties in an environmental responsible manner. Senior management at Southwestern has taken actions to increase environmental awareness throughout the organizations which is evidenced by the creation of the Environmental, Safety, Health, and Security Office, and the establishment of environmental and safety appointed representatives at various field locations.

NONE

1995-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "tower site tapajos" 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
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341

First Results From GLAST-LAT Integrated Towers Cosmic Ray Data Taking And Monte Carlo Comparison  

SciTech Connect

GLAST Large Area Telescope (LAT) is a gamma ray telescope instrumented with silicon-strip detector planes and sheets of converter, followed by a calorimeter (CAL) and surrounded by an anticoincidence system (ACD). This instrument is sensitive to gamma rays in the energy range between 20 MeV and 300 GeV. At present, the first towers have been integrated and pre-launch data taking with cosmic ray muons is being performed. The results from the data analysis carried out during LAT integration will be discussed and a comparison with the predictions from the Monte Carlo simulation will be shown.

Brigida, M.; Caliandro, A.; Favuzzi, C.; Fusco, P.; Gargano, F.; Giordano, F.; Giglietto, N.; Loparco, F.; Marangelli, B.; Mazziotta, M.N.; Mirizzi, N.; Raino, S.; Spinelli, P.; /Bari U. /INFN, Bari

2007-02-15T23:59:59.000Z

342

Seismic and cask drop excitation evaluation of the tower shielding reactor  

SciTech Connect

During the current shutdown of the Tower Shielding Reactor II (TSR-II), analyses were performed to determine the effect of nearby cask drops on the structural and mechanical integrity of the reactor. This evaluation was then extended to include the effects of earthquakes. Several analytic models were developed to simulate the effects of earthquake and cask drop excitation. A coupled soil-structure model was developed. As a result of the analyses, several hardware modifications and enhancements were implemented to ensure reactor integrity during future operations. 6 figs.

Harris, S.P.; Stover, R.L.; Johnson, J.J.; Sumodobila, B.N. (EQE, Inc., San Francisco, CA (USA); Oak Ridge National Lab., TN (USA); EQE, Inc., San Francisco, CA (USA))

1989-01-01T23:59:59.000Z

343

A Conceptual Plan for the Detroit Book and Tower Building: Exploration of the Conjunction of Historic Preservation and Sustainable Design Concepts.  

E-Print Network (OSTI)

??This conceptual project generated an adaptive reuse proposal for the Book and Tower Building in a registered historic district. Louis Kamper designed the thirteen-story Book (more)

Luo, Chi-Ying

2006-01-01T23:59:59.000Z

344

Low Wind Speed Technology Phase I: Evaluation of Design and Construction Approaches for Economical Hybrid Steel/Concrete Wind Turbine Towers; BERGER/ABAM Engineers Inc.  

DOE Green Energy (OSTI)

This fact sheet describes a subcontract with BERGER/ABAM Engineers Inc. to study the economic feasibility of concrete and hybrid concrete/steel wind turbine towers.

Not Available

2006-03-01T23:59:59.000Z

345

Proposal for the Award of a Contract for the Civil Engineering Work on the Extensions to the Cooling Towers at LEP Points 2, 4, 6 and 8  

E-Print Network (OSTI)

Proposal for the Award of a Contract for the Civil Engineering Work on the Extensions to the Cooling Towers at LEP Points 2, 4, 6 and 8

1991-01-01T23:59:59.000Z

346

Testing of an impedance heating system for solar power tower applications  

DOE Green Energy (OSTI)

A non-conventional type of heating system is being tested at Sandia National Laboratories for solar thermal power tower applications. In this system, called impedance heating, electric current flows directly through the pipe to maintain the desired temperature. The pipe becomes the resistor where the heat is generated. Impedance heating has many advantages over previously used mineral insulated (MI) heat trace. An impedance heating system should be much more reliable than heat trace cable since delicate junctions and cabling are not used and the main component, a transformer, is inherently reliable. A big advantage of impedance heating is the system can be sized to rapidly heat up the piping to provide rapid response times necessary in cyclic power plants such as solar power towers. In this paper, experimental results from testing an impedance heating system are compared to MI cable heat trace. We found impedance heating was able to heat piping rapidly and effectively. There were not significant stray currents and impedance heating did not affect instrumentation.

Pacheco, J.E.; Kolb, W.J.

1996-05-01T23:59:59.000Z

347

arcControlTower: the System for Atlas Production and Analysis on ARC  

E-Print Network (OSTI)

PanDA, the Atlas management and distribution system for production and analysis jobs on EGEE and OSG clusters, is based on pilot jobs to increase the throughput and stability of the job execution on grid. The ARC middleware uses specific approach which tightly connects the job requirements with cluster capabilities like resource usage, software availability and caching of input files. The pilot concept renders the ARC features useless. The arcControlTower is the job submission system which merges the pilot benefits and ARC advantages. It takes the pilot payload from the panda server and submits the jobs to the Nordugrid ARC clusters as regular jobs, with all the job resources known in advance. All the pilot communication with the PanDA server is done by the arcControlTower, so it plays the role of a pilot factory and the pilot itself. There are several advantages to this approach: no grid middleware is needed on the worker nodes, the fair-share between the production and user jobs is tuned with the arcControl...

Filipcic, A; The ATLAS collaboration

2011-01-01T23:59:59.000Z

348

arcControlTower, the System for Atlas Production and Analysis on ARC  

E-Print Network (OSTI)

Abstract content Panda, the Atlas management and distribution system for production and analysis jobs on EGEE and OSG clusters, is based on pilot jobs to increase the throughput and stability of the job execution on grid. The ARC middleware uses specific approach which tightly connects the job requirements with cluster capabilities like resource usage, software availability and caching of input files. The pilot concept renders the ARC features useless. The arcControlTower is the job submission system which merges the pilot benefits and ARC advantages. It takes the pilot payload from the panda server and submits the jobs to the Nordugrid ARC clusters as regular jobs, with all the resources known in advance. All the pilot communication with the panda server is done by the arcControlTower, so it plays the role of a pilot factory and the pilot itself. There are several advantages to this approach: no grid middleware is needed on the worker nodes, the fair-share between the production and user jobs is tuned with t...

Filipcic, A; The ATLAS collaboration

2010-01-01T23:59:59.000Z

349

An evaluation of possible next-generation high temperature molten-salt power towers.  

DOE Green Energy (OSTI)

Since completion of the Solar Two molten-salt power tower demonstration in 1999, the solar industry has been developing initial commercial-scale projects that are 3 to 14 times larger. Like Solar Two, these initial plants will power subcritical steam-Rankine cycles using molten salt with a temperature of 565 C. The main question explored in this study is whether there is significant economic benefit to develop future molten-salt plants that operate at a higher receiver outlet temperature. Higher temperatures would allow the use of supercritical steam cycles that achieve an improved efficiency relative to today's subcritical cycle ({approx}50% versus {approx}42%). The levelized cost of electricity (LCOE) of a 565 C subcritical baseline plant was compared with possible future-generation plants that operate at 600 or 650 C. The analysis suggests that {approx}8% reduction in LCOE can be expected by raising salt temperature to 650 C. However, most of that benefit can be achieved by raising the temperature to only 600 C. Several other important insights regarding possible next-generation power towers were also drawn: (1) the evaluation of receiver-tube materials that are capable of higher fluxes and temperatures, (2) suggested plant reliability improvements based on a detailed evaluation of the Solar Two experience, and (3) a thorough evaluation of analysis uncertainties.

Kolb, Gregory J.

2011-12-01T23:59:59.000Z

350

Comparison of an impedance heating system to mineral insulated heat trace for power tower applications  

DOE Green Energy (OSTI)

A non-conventional type of heating system is being tested at Sandia National Laboratories for solar thermal power tower applications. In this system, called impedance heating, electric current flows directly through the pipe to maintain the desired temperature. The pipe becomes the resistor where the heat is generated. Impedance heating has many advantages over previously used mineral insulated (MI) heat trace. An impedance heating system should be much more reliable than heat trace cable since delicate junctions and cabling are not used and the main component, a transformer, is inherently reliable. A big advantage of impedance heating is the system can be sized to rapidly heat up the piping to provide rapid response times necessary in cyclic power plants such as solar power towers. In this paper, experimental results from testing an impedance heating system are compared to MI heat trace. The authors found impedance heating was able to heat piping rapidly and effectively. There were not significant stray currents and impedance heating did not affect instrumentation.

Pacheco, J.E.; Kolb, W.J.

1997-03-01T23:59:59.000Z

351

Investigation of Microbial Respirometry for Monitoring Natural Sulfide Abatement in Geothermal Cooling Tower Basins  

DOE Green Energy (OSTI)

Geothermal plant operators are interested in investigating the ability of micro-organisms found in the cooling tower basin to metabolize and cycle sulfide to less toxic sulfur compounds. If the growth or activity of the organisms participating in sulfur-oxidation could be selectively enhanced, then hydrogen sulfide could be naturally abated in the cooling basin, substantially reducing the costs associated with the chemicals used for abatement. The use of respirometry has been proposed as a technique for monitoring the response of the microbial populations found in geothermal cooling towers to various conditions, including the addition of nutrients such as nitrogen and phosphorus. Respiro-metry is a manometric measurement of dissolved gases that are in equilibrium in a con-fined sample volume. Since microbes expire varying amounts of carbon dioxide or oxygen as they metabolize nutrients, this technique can be used to evaluate their activities in process streams. This report describes a series of experiments designed to determine the suitability of respirometry for tracking microbial activity for evaluating and enhancing natural abatement processes in geothermal cooling basins.

Peter A. Pryfogle

2005-09-01T23:59:59.000Z

352

Comparison of Triton SODAR Data to Meteorological Tower Wind Measurement Data in Hebei Province, China  

DOE Green Energy (OSTI)

With the increased interest in remote sensing of wind information in recent years, it is important to determine the reliability and accuracy of new wind measurement technologies if they are to replace or supplement conventional tower-based measurements. In view of this, HydroChina Corporation and the United States National Renewable Energy Laboratory (NREL) conducted a comparative test near a wind farm in Hebei Province, China. We present the results of an analysis characterizing the measurement performance of a state-of-the-art Sound Detection and Ranging (sodar) device when compared to a traditional tower measurement program. NREL performed the initial analysis of a three-month period and sent the results to HydroChina. When another month of data became available, HydroChina and their consultant Beijing Millenium Engineering Software (MLN) repeated NREL's analysis on the complete data set, also adding sensitivity analysis for temperature, humidity, and wind speed (Section 6). This report presents the results of HydroChina's final analysis of the four-month period.

Yuechun, Y.; Jixue, W.; Hongfang, W.; Guimin, L.; Bolin, Y.; Scott, G.; Elliott, D.; Kline, D.

2012-01-01T23:59:59.000Z

353

Seismic response of a tower as measured by an integrated RTK-GPS system  

E-Print Network (OSTI)

Monitoring structural response induced by seismic waves is an efficient way to mitigate the damage of earthquakes. For example, the measured signal can be used to activate an alarm system in order to evacuate people from an endangered building, or to drive a control system to suppress earthquake-excited vibrations so as to protect the integrity of the structure, or to assess post-seismic damage to a structure. Traditionally such vibrations have been measured solely by accelerometers. However, it is impossible to measure the static and semi-static components of the movement with accelerometers. An integrated system combining RTK-GPS and accelerometers has been deployed atop a 108m tall tower in Tokyo in order to monitor its structural integrity on a continuous basis. Data acquired during earthquakes are automatically archived. In this paper, the seismic responses of the tower were analysed using Fast Fourier Transformation (FFT) of the GPS and accelerometer measurements. The data were also converted to displacement (in the case of accelerometer) and acceleration (in the case of GPS) through double-integration and double-differentiation respectively, for the purpose of direct comparison. The results agreed with each other well, except that the static component was

Xiaojing Li; Linlin Ge; Yukio Tamura; Akihito Yoshida; Chris Rizos; Gang-ding Peng

2004-01-01T23:59:59.000Z

354

Microsoft Word - CX-Pearl-Marion-Tower-6-2-Replace_FY12_WEB.doc  

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

3, 2012 3, 2012 REPLY TO ATTN OF: KEPR-4 SUBJECT: Environmental Clearance Memorandum Richard Heredia Project Manager - TEP-TPP-1 Proposed Action: Pearl-Marion No.1 Tower 6/2 replacement project PP&A Project No.: PP&A 2147, WO# 00296634, Task 3 Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B4.6 Additions and modifications to transmission facilities Location: Canby, Clackamas County, Oregon Township 3 South, Range 1 East, Section 19 Proposed by: Bonneville Power Administration (BPA) Description of the Proposed Action: BPA proposes to replace a single tower (6/2) on the existing Pearl-Marion No. 1 500-kilovolt (kV) transmission line. Tower 6/2 is located along the Molalla River where natural river channel movement and continued stream bank erosion

355

REFRIGERATIONREFRIGERATION ((svsv: Kylteknik): Kylteknik) 424503 E424503 E 20102010 #7#7 --rzrz 7. Air conditioning, cooling towers7. Air conditioning, cooling towersg, gg, g  

E-Print Network (OSTI)

the top of the tower An (earlier) alternative is to use a spray pond to cool water; disadvantages. Air conditioning, cooling towers7. Air conditioning, cooling towersg, gg, g Ron Zevenhoven ??bo, is the hi htemperature at which condensation begins when air is cooled at constant pressurecooled

Zevenhoven, Ron

356

DOE/SC-ARM/TR-128 Tower Water-Vapor Mixing Ratio Value-Added  

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

8 8 Tower Water-Vapor Mixing Ratio Value-Added Product April 2013 DISCLAIMER This report was prepared as an account of work sponsored by the U.S. Government. Neither the United States nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the U.S. Government or any agency thereof. The views and

357

Prototype Test Results of the Solar Tower Atmospheric Cherenkov Effect Experiment (STACEE)  

E-Print Network (OSTI)

There are currently no experiments, either satellite or ground-based, that are sensitive to astrophysical gamma-rays at energies between 20 and 250 GeV. We are developing the Solar Tower Atmospheric Cherenkov Effect Experiment (STACEE) to explore this energy range. STACEE will use heliostat mirrors at a solar research facility to collect Cherenkov light from extensive air showers produced by high energy gamma-rays. Here we report on the results of prototype test work at the solar facility of Sandia National Laboratories (Albuquerque, NM). The work demonstrates that the facility is suitable for use as an astrophysical observatory. In addition, using a full scale prototype of part of STACEE, we detected atmospheric Cherenkov radiation at energies lower than any other ground-based experiment to date.

STACEE Collaboration

1997-04-03T23:59:59.000Z

358

Utility-Scale Power Tower Solar Systems: Performance Acceptance Test Guidelines  

DOE Green Energy (OSTI)

The purpose of these Guidelines is to provide direction for conducting performance acceptance testing for large power tower solar systems that can yield results of a high level of accuracy consistent with good engineering knowledge and practice. The recommendations have been developed under a National Renewable Energy Laboratory (NREL) subcontract and reviewed by stakeholders representing concerned organizations and interests throughout the concentrating solar power (CSP) community. An earlier NREL report provided similar guidelines for parabolic trough systems. These Guidelines recommend certain methods, instrumentation, equipment operating requirements, and calculation methods. When tests are run in accordance with these Guidelines, we expect that the test results will yield a valid indication of the actual performance of the tested equipment. But these are only recommendations--to be carefully considered by the contractual parties involved in the Acceptance Tests--and we expect that modifications may be required to fit the particular characteristics of a specific project.

Kearney, D.

2013-03-01T23:59:59.000Z

359

Vulnerability assessment of medieval civic towers as a tool for retrofitting design  

Science Conference Proceedings (OSTI)

The seismic vulnerability of an ancient civic bell-tower is studied. Rather than seeing it as an intermediate stage toward a risk analysis, the assessment of vulnerability is here pursued for the purpose of optimizing the retrofit design. The vulnerability curves are drawn by carrying out a single time history analysis of a model calibrated on the basis of experimental data. From the results of this analysis, the medians of three selected performance parameters are estimated, and they are used to compute, for each of them, the probability of exceeding or attaining the three corresponding levels of light, moderate and severe damage. The same numerical model is then used to incorporate the effects of several retrofitting solutions and to re-estimate the associated vulnerability curves. The ultimate goal is to provide a numerical tool able to drive the optimization process of a retrofit design by the comparison of the vulnerability estimates associated with the different retrofitting solutions.

Casciati, Sara [ASTRA Department, University of Catania, Siracusa (Italy); Faravelli, Lucia [Department of Structural Mechanics, University of Pavia, Pavia, Pavia (Italy)

2008-07-08T23:59:59.000Z

360

Fuzzy Logic Application for Optimization of the Cooling Towers Control System  

E-Print Network (OSTI)

The control system for the SPS-BA6 cooling towers station is considered in order to introduce the concept of a multivariable process. Multivariable control means the maintenace of several controlled variables at independent set points. In a single-variable system, to keep the single process variables within their critical values is considered a rather simple operation. In a complex multivariable system, the determination of the optimal operation point results in a combination of all set values of the variables. Control of a multivariable system requires therefore a more complex analysis. As the solution based on a mathematical model of the process is far beyond acceptable complexity, most mathematical models involve extensive simplifications and linearizations to optimize the resulting controllers. In this report the author will demonstrate how fuzzy logic might provide elegant and efficient solutions in the design of multivariable control based on experimental results rather than on mathematical models.

Blanc, D

2000-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tower site tapajos" 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

Constructing a virtual tower of Babel: a case study in cross-cultural collaboration across three continents  

Science Conference Proceedings (OSTI)

The collaboration project described in this paper revolves around the construction of a virtual Tower of Babel in a 3D Collaborative Virtual Environment (3D CVE). It involved students across three cooperating institutions, on three different continents ... Keywords: 3D collaborative virtual environments, multi-cultural classroom

Ekaterina Prasolova-Frland; Theodor Wyeld; Teng-Wen Chang

2007-09-01T23:59:59.000Z

362

The Discussion of a New Exhausting Smoke Solution in Natural Draft Cooling Tower with Flue Gas Injection  

Science Conference Proceedings (OSTI)

First, the three-dimensional model of NDCT with flue gas injection and the boundary conditions was established by GAMBIT2.3 on the basis of structural parameter. On theFLUENT6.3 technology platform with self-designed program, it was found that: The new ... Keywords: NDCT with flue gas injection, jet mechanics numerical simulation, natural draft cooling towers

Yang Shuo; Qing-Jie Qi; Xin-Le Yang; Shi Lei; Chun-Yang Li

2011-02-01T23:59:59.000Z

363

Meteorological Tower, Microbarograph Array, and Sodar Observations of Solitary-like Waves in the Nocturnal Boundary Layer  

Science Conference Proceedings (OSTI)

Five short-duration disturbances of the stable nocturnal boundary layer, ranging in depth from about 15 m to over 500 m, were observed using a 300 m meteorological tower, 2 sodars, and a 4-station microbarograph array. Four of the events showed ...

T. K. Cheung; C. G. Little

1990-11-01T23:59:59.000Z

364

Long-Term Carbon Dioxide Fluxes from a Very Tall Tower in a Northern Forest: Flux Measurement Methodology  

Science Conference Proceedings (OSTI)

Methodology for determining fluxes of CO2 and H2O vapor with the eddy-covariance method using data from instruments on a 447-m tower in the forest of northern Wisconsin is addressed. The primary goal of this study is the validation of the methods ...

Bradford W. Berger; Kenneth J. Davis; Chuixiang Yi; Peter S. Bakwin; Cong Long Zhao

2001-04-01T23:59:59.000Z

365

Medical Sites  

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

Medical Sites Name: Jenielle Location: NA Country: NA Date: NA Question: I started itching Aug. 1999. Diagnosed with ITP Oct.1999. I am in remission With a platelet count in...

366

Hanford Site  

NLE Websites -- All DOE Office Websites

Around the Site Current HMS Observations Daily HMS Extremes in Met Data Met and Climate Data Summary Products Contacts Hours Current NWS Forecast for the Tri-Cities NWS...

367

Life Cycle Greenhouse Gas Emissions of Trough and Tower Concentrating Solar Power Electricity Generation: Systematic Review and Harmonization  

SciTech Connect

In reviewing life cycle assessment (LCA) literature of utility-scale concentrating solar power (CSP) systems, this analysis focuses on reducing variability and clarifying the central tendency of published estimates of life cycle greenhouse gas (GHG) emissions through a meta-analytical process called harmonization. From 125 references reviewed, 10 produced 36 independent GHG emissions estimates passing screens for quality and relevance: 19 for parabolic trough (trough) technology and 17 for power tower (tower) technology. The interquartile range (IQR) of published estimates for troughs and towers were 83 and 20 grams of carbon dioxide equivalent per kilowatt-hour (g CO2-eq/kWh),1 respectively; median estimates were 26 and 38 g CO2-eq/kWh for trough and tower, respectively. Two levels of harmonization were applied. Light harmonization reduced variability in published estimates by using consistent values for key parameters pertaining to plant design and performance. The IQR and median were reduced by 87% and 17%, respectively, for troughs. For towers, the IQR and median decreased by 33% and 38%, respectively. Next, five trough LCAs reporting detailed life cycle inventories were identified. The variability and central tendency of their estimates are reduced by 91% and 81%, respectively, after light harmonization. By harmonizing these five estimates to consistent values for global warming intensities of materials and expanding system boundaries to consistently include electricity and auxiliary natural gas combustion, variability is reduced by an additional 32% while central tendency increases by 8%. These harmonized values provide useful starting points for policy makers in evaluating life cycle GHG emissions from CSP projects without the requirement to conduct a full LCA for each new project.

Burkhardt, J. J.; Heath, G.; Cohen, E.

2012-04-01T23:59:59.000Z

368

Meteorological Observations for Renewable Energy Applications at Site 300  

DOE Green Energy (OSTI)

In early October 2010, two Laser and Detection Ranging (LIDAR) units (LIDAR-96 and LIDAR-97), a 3 m tall flux tower, and a 3 m tall meteorological tower were installed in the northern section of Site 300 (Figure 1) as a first step in development of a renewable energy testbed facility. This section of the SMS project is aimed at supporting that effort with continuous maintenance of atmospheric monitoring instruments capable of measuring vertical profiles of wind speed and wind direction at heights encountered by future wind power turbines. In addition, fluxes of energy are monitored to estimate atmospheric mixing and its effects on wind flow properties at turbine rotor disk heights. Together, these measurements are critical for providing an accurate wind resource characterization and for validating LLNL atmospheric prediction codes for future renewable energy projects at Site 300. Accurate, high-resolution meteorological measurements of wind flow in the planetary boundary layer (PBL) and surface-atmosphere energy exchange are required for understanding the properties and quality of available wind power at Site 300. Wind speeds at heights found in a typical wind turbine rotor disk ({approx} 40-140 m) are driven by the synergistic impacts of atmospheric stability, orography, and land-surface characteristics on the mean wind flow in the PBL and related turbulence structures. This section of the report details the maintenance and labor required in FY11 to optimize the meteorological instruments and ensure high accuracy of their measurements. A detailed look at the observations from FY11 is also presented. This portion of the project met the following milestones: Milestone 1: successful maintenance and data collection of LIDAR and flux tower instruments; Milestone 2: successful installation of solar power for the LIDAR units; and Milestone 3: successful implementation of remote data transmission for the LIDAR units.

Wharton, S; Alai, M; Myers, K

2011-10-26T23:59:59.000Z

369

Site Map  

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

Home » Site Map Home » Site Map Site Map Home About Overview NERSC Mission Contact us Staff Center Leadership Sudip Dosanjh Select Publications Jeff Broughton Katie Antypas John Shalf Francesca Verdier Center Administration James Craw Norma Early Jeff Grounds Betsy MacGowan Zaida McCunney Lynn Rippe Suzanne Stevenson David Tooker Center Communications Jon Bashor Linda Vu Margie Wylie Kathy Kincade Advanced Technologies Group Nicholas Wright Brian Austin Research Projects Matthew Cordery Christopher Daley Analytics Group Peter Nugent David Camp Hank Childs Harinarayan Krishnan Burlen Loring Joerg Meyer Prabhat Oliver Ruebel Daniela Ushizima Gunther Weber Yushu Yao Computational Systems Group Jay Srinivasan James Botts Scott Burrow Tina Butler Nick Cardo Tina Declerck Ilya Malinov David Paul Larry Pezzaglia Iwona Sakrejda

370

The Statistical Relationship between the Synoptic-Scale Pressure Field and the Development and Morning Transition of Surface Inversions at Two Rural Sites  

Science Conference Proceedings (OSTI)

The association between the synoptic-scale sea level pressure field and the behavior of the morning inversion at two 60-m tower sites in North and South Carolina is investigated. Daily gridded pressure data for 1976 through 1982 for the eastern ...

Raymond B. Kiess; Allen J. Riordan

1987-08-01T23:59:59.000Z

371

NSA-Old Aspen Site  

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

aspen forest TE-6 does biomass and allometry readings Aspen trees from the OA canopy tower in spring. This picture is looking at the ground through the aspen trees from the top...

372

WindPACT Turbine Design Scaling Studies Technical Area 3ŒSelf-Erecting Tower and Nacelle Feasibility  

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

1 * NREL/SR-500-29493 1 * NREL/SR-500-29493 Global Energy Concepts, LLC Kirkland, Washington WindPACT Turbine Design Scaling Studies Technical Area 3-Self-Erecting Tower and Nacelle Feasibility March 2000-March 2001 National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401-3393 NREL is a U.S. Department of Energy Laboratory Operated by Midwest Research Institute * * * * Battelle * * * * Bechtel Contract No. DE-AC36-99-GO10337 May 2001 * NREL/SR-500-29493 WindPACT Turbine Design Scaling Studies Technical Area 3-Self-Erecting Tower and Nacelle Feasibility March 2000-March 2001 Global Energy Concepts, LLC Kirkland, Washington NREL Technical Monitor: Alan Laxson Prepared under Subcontract No. YAM-0-30203-01 National Renewable Energy Laboratory 1617 Cole Boulevard

373

Solar-MHD energy conversion system. [tower focus collector with closed-cycle MHD generator  

SciTech Connect

A solar energy conversion system includes a centrally positioned tower supporting a solar receiver, and an array of pivotally mounted reflectors disposed circumferentially therearound which reflect earth incident solar radiation onto the receiver which thermally excites and photo-ionizes a working fluid to form a plasma. The plasma is accelerated and further heated through a ceramic turbo-compressor into a magnetohydrodynamic (MHD) generator to produce direct current. The working fluid is then passed through a heat exchanger channel where the waste heat is removed by another working fluid which drives a vapor turbine connected to the ceramic turbo-compressor and an AC generator. Seed may then be removed and the working fluid is recycled in the closed cycle MHD system. The electrical power is distributed, part of it being used to electrolyze water into hydrogen and oxygen which are stored and allowed to exothermally recombine to drive the system during low solar radiation intervals. In a further embodiment the MHD working fluid receives its velocity from an external turbo-compressor drivem by the second working fluid, and an alternative thermal and photo-ionization chamber is employed. 16 claims, 10 figures.

Rathbun, K.R.

1978-06-13T23:59:59.000Z

374

Site C  

Office of Legacy Management (LM)

' ' u. s. A r my Corps or Engineers Kurfal.. Ilisfr ifl om« 1776 N1 . ~lI rll Sfred , lIu fflll" , New v ur k. 14207 Site C loseout Report for th e Ashland I (Includlng Seaway Arca D), Ashland 2 and Rattlesnake Creek FUS RAP Sites To nawanda . New Yor k F ina l - Octo ber 2006 Formerl y Ut ilized Sites Remedi al Actiun Program Dt:CLAlUlfiO lO OF RF ~ I'O""" A <:n o .. ('oMnLflOI'O '" 1 S-~1 1 A "n· nvnn: S Ill: C'lO'iU 'U l RtrUlIT f OR A SlIu x u l (I "ICLU I ING S t:A" ·,H A RU D j, AS H I .A ~O 2 A."n RAnU:M'AKf eRU" ~ rn~ I!d'on at A.hland 1 (Ind udonl Seaway Area DJ. Ashland 2 and kan~snak c Creek is Wi,...... 1c in acwr.hnu willi ~ Rcconl or Oecisim (ROD) . igned 00> April 20. 1998 and l'.1pbIWlOII <;If

375

Program on Technology Innovation: Feasibility Study of Using a Thermosyphon Cooler Hybrid System to Reduce Cooling Tower Water Consu mption  

Science Conference Proceedings (OSTI)

This Technical Update describes the initial work accomplished by a feasibility study for using a newly developed Thermosyphon Cooler (TSC) Hybrid System to reduce cooling-tower water consumption at steam power plants. The report outlines the overall project and then details the applicable codes and standards that would apply to this technology. It also briefly touches on the literature and patents relating to this field. It describes the rationale and constraints involved in setting up the ...

2012-11-19T23:59:59.000Z

376

Numerical Simulation and Test Study on Non-uniform Area Of Round-ended CFST Tubular Tower  

Science Conference Proceedings (OSTI)

The impacts of Poisson ratio of core concrete on the bearing capacity of round-ended CFST tubular tower and non-uniform area were analyzed with test study and the sub-model technology, the most disadvantaged stress state of the structure under the triaxial ... Keywords: round-ended concrete-filled steel(CFST), triaxial compression, Poisson's ratio(), sub-model method, Micro-expansive

Jian-xiong Xie; Zhe-an Lu

2010-06-01T23:59:59.000Z

377

Boundary layer eddies at the Goodnoe Hills site  

DOE Green Energy (OSTI)

Data from nine instrumented meteorological towers at the MOD-2 wind turbine site at Goodnoe Hills in Washington State were analyzed to evaluate high-frequency perturbations, which were observed in the lower boundary-layer flow. Horizontal winds and temperature measurements for a period of 8 min, undisturbed by turbine operation, were available for this study. The data are in 1-s values from June 27, 1985. Throughout the study, departures from the mean for the period and for each sensor were used on area maps and on line-time and tower-time cross sections. Conventional streamline and isotach analyses were employed; they show highly organized flow fields with embedded perturbations traversing the site. Most of the flow fields have a well-developed vortical structure that reaches from the surface through the top level of the highest tower. These structures consist of a system of clockwise and counter-clockwise circulations. The wave length is about 500 to 600 m. Their wave speed is slightly greater than the mean wind speed and their movement is in the general direction of the mean flow. The results of the study show two main reasons why wind conditions and turbine power output in a wind farm may vary in a remarkable and abrupt fashion in space and time under certain circumstances: (1) The boundary-layer flow contains highly organized coherent perturbations with a typical size of 300 {times} 300 M{sup 2}. (2) The transition zones between the perturbations moving through a wind farm are associated with very definitive changes in the wind field that are on the order of meters and seconds. 2 refs., 11 figs.

Aspliden, C.I.; Wendell, L.L.; Clem, K.S.; Gower, G.L.

1991-05-01T23:59:59.000Z

378

Induced-Draft Cooling Towers and Parallel Wet/Dry Cooling for Combined-Cycle Plants: Design Best Practices and Procurement Specifica tions  

Science Conference Proceedings (OSTI)

This report contains information and examples of best practices for the design and specification of wet and parallel (hybrid) cooling towers for combined-cycle applications. Two reference (template) specifications are includedone for totally wet cooling systems and one for parallel cooling systems with a wet cooling tower and air-cooled condensers (ACC) in parallel. These template specifications are intended to be the starting point from which the utility or developer can "customize" as needed to fit its...

2011-10-14T23:59:59.000Z

379

NIST International GNSS Service Tracking Site  

Science Conference Proceedings (OSTI)

... Looking to the southwest, the NISU antenna is on the top left of the cement tower, which houses the elevator shaft. We see ...

380

Effects of Temporal Wind Patterns on the Value of Wind-Generated Electricity at Different Sites in California and the Northwest  

E-Print Network (OSTI)

or production data from tall towers are needed before we canmore data from tall anemometer towers or operational wind

Fripp, Matthias; Wiser, Ryan

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tower site tapajos" 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

Incorporating supercritical steam turbines into molten-salt power tower plants : feasibility and performance.  

SciTech Connect

Sandia National Laboratories and Siemens Energy, Inc., examined 14 different subcritical and supercritical steam cycles to determine if it is feasible to configure a molten-salt supercritical steam plant that has a capacity in the range of 150 to 200 MWe. The effects of main steam pressure and temperature, final feedwater temperature, and hot salt and cold salt return temperatures were determined on gross and half-net efficiencies. The main steam pressures ranged from 120 bar-a (subcritical) to 260 bar-a (supercritical). Hot salt temperatures of 566 and 600%C2%B0C were evaluated, which resulted in main steam temperatures of 553 and 580%C2%B0C, respectively. Also, the effects of final feedwater temperature (between 260 and 320%C2%B0C) were evaluated, which impacted the cold salt return temperature. The annual energy production and levelized cost of energy (LCOE) were calculated using the System Advisory Model on 165 MWe subcritical plants (baseline and advanced) and the most promising supercritical plants. It was concluded that the supercritical steam plants produced more annual energy than the baseline subcritical steam plant for the same-size heliostat field, receiver, and thermal storage system. Two supercritical steam plants had the highest annual performance and had nearly the same LCOE. Both operated at 230 bar-a main steam pressure. One was designed for a hot salt temperature of 600%C2%B0C and the other 565%C2%B0C. The LCOEs for these plants were about 10% lower than the baseline subcritical plant operating at 120 bar-a main steam pressure and a hot salt temperature of 565%C2%B0C. Based on the results of this study, it appears economically and technically feasible to incorporate supercritical steam turbines in molten-salt power tower plants.

Pacheco, James Edward; Wolf, Thorsten [Siemens Energy, Inc., Orlando, FL; Muley, Nishant [Siemens Energy, Inc., Orlando, FL

2013-03-01T23:59:59.000Z

382

Candidate wind turbine generator site, Culebra, Puerto Rico. Annual data summary, October 1978-September 1979  

DOE Green Energy (OSTI)

This report summarizes wind speed and direction data collected on meteorological towers at 14 candidate and wind turbine generator installation sites from October 1978 through September 1979. The basic method of data collection is by digital data cassette recording systems. For the digital data reported, an instantaneous sample is recorded every 2 minutes. An explanation is provided for each data summary table as well as information on how specific values were computed. The rest of the report presents the annual summarized data for each site.

Not Available

1980-07-01T23:59:59.000Z

383

Candidate wind turbine generator site, Culebra, Puerto Rico. Annual data summary, January-December 1979  

DOE Green Energy (OSTI)

This report summarizes wind speed and direction data collected on meteorological towers at 14 candidate and wind turbine generator installation sites from January 1979 through December 1979. The basic method of data collection is by digital data cassette recording systems. For the digital data reported, an instantaneous sample is recorded every 2 minutes. An explanation is included for each data summary table as well as information on how specific values were computed. The rest of the report presents the annual summarized data for each site.

None

1980-06-01T23:59:59.000Z

384

Division Site  

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

Carbon Dioxide Reduction Catalysts Carbon Dioxide Reduction Catalysts Our research program is directed toward developing and understanding metal complexes that catalyze reactions relevant to renewable energy, particularly those that reduce carbon dioxide to fuels or fuel precursors. Carbon dioxide reduction catalysts are important targets because they could enable "recycling" of hydrocarbon fuels, thus lowering their carbon footprint. Our research addresses two key challenges in this area. First, we aim to improve the lifetimes, activity, and selectivity of homogeneous catalysts by incorporating them into porous heterogeneous frameworks derived from structurally persistent organic polymers. These frameworks allow isolation of the catalytic centers, which inhibits reaction pathways that lead to catalyst decomposition, and enable the spatially controlled deployment of ancillary functional groups that bind and concentrate substrate near the active site and/or assist with its activation. Second, we are developing homogeneous dual-catalyst systems and assemblies that couple CO2 reduction catalysis to a parallel catalytic reaction that provides the reducing equivalents. We are especially interested in proton-coupled electron-transfer reactions involving activation of H2 and of organic dehydrogenation substrates, wherein the proton pathway also participates in the conversion of CO2 to CO. In both of these research thrusts we are studying catalysts that may be activated under thermal, electrochemical, or photochemical conditions.

385

Microsoft Word - 4 ATT Sites - CX.docx  

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

7, 2012 7, 2012 REPLY TO ATTN OF: KEC-4 SUBJECT: Environmental Clearance Memorandum Tim Murray Project Manager - TELP-TPP-3 Proposed Action: Four AT&T Wireless Communication Site Upgrades Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B1.7 Acquisition, installation, operation, and removal of communication systems... B1.19 Siting, construction, and operation of microwave and radio communication towers and associated facilities... Locations: Township 3 North, Range 6 West, Section 14, Clallam County, Washington Township 26 North, Range 42 East, Section 16, Spokane Couny, Washington Township 28 North, Range 6 East, Section 4, Snohomish County, Washington Township 38 North, Range 3 East, Section 14, Whatcom County, Washington

386

Site Environmental Report for Calendar Year 2010  

E-Print Network (OSTI)

-17 December 2004 Numerical Simulation of Heat and Mass Transfer in a Natural Draft Wet Cooling Tower N draft wet cooling tower using the com- mercial CFD package Fluent has been conducted. The wa- ter droplets in the spray and rain zones are represented with droplet trajectories written in Lagrangian form

Kemner, Ken

387

CERCLA - Site Selector  

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

(LEHR) Fernald Preserve Monticello Site Mound Site - Miamisburg Closure Project Rocky Flats Site Weldon Spring Search the Administrative Record The White House USA.gov E-Gov...

388

ORNL DAAC Site Map  

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

Site Map ORNL DAAC Site Map About Us About ORNL DAAC Who We Are User Working Group Biogeochemical Dynamics Data Citation Policy News Newsletters Workshops Site Map Products...

389

Savannah River Site  

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

River Site Savannah River Site Savannah River Site (SRS) has mission responsibilities in nuclear weapons stockpile stewardship by ensuring the safe and reliable management of...

390

CERCLA - Site Selector  

Office of Legacy Management (LM)

Monticello Site Mound Site - Miamisburg Closure Project Rocky Flats Site Weldon Spring Search the Administrative Record The White House USA.gov E-Gov Information Quality FOIA...

391

A new code for the design and analysis of the heliostat field layout for power tower system  

Science Conference Proceedings (OSTI)

A new code for the design and analysis of the heliostat field layout for power tower system is developed. In the new code, a new method for the heliostat field layout is proposed based on the edge ray principle of nonimaging optics. The heliostat field boundary is constrained by the tower height, the receiver tilt angle and size and the heliostat efficiency factor which is the product of the annual cosine efficiency and the annual atmospheric transmission efficiency. With the new method, the heliostat can be placed with a higher efficiency and a faster response speed of the design and optimization can be obtained. A new module for the analysis of the aspherical heliostat is created in the new code. A new toroidal heliostat field is designed and analyzed by using the new code. Compared with the spherical heliostat, the solar image radius of the field is reduced by about 30% by using the toroidal heliostat if the mirror shape and the tracking are ideal. In addition, to maximize the utilization of land, suitable crops can be considered to be planted under heliostats. To evaluate the feasibility of the crop growth, a method for calculating the annual distribution of sunshine duration on the land surface is developed as well. (author)

Wei, Xiudong; Lu, Zhenwu; Yu, Weixing [Changchun Institute of Optics, Fine Mechanics and Physics of Chinese Academy of Sciences, Changchun 130033 (China); Wang, Zhifeng [The Key Laboratory of Solar Thermal Energy and Photovoltaic system, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190 (China)

2010-04-15T23:59:59.000Z

392

Chapter 3: Building Siting  

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

: Building Siting : Building Siting Site Issues at LANL Site Inventory and Analysis Site Design Transportation and Parking LANL | Chapter 3 Site Issues at LANL Definitions and related documents Building Siting Laboratory site-wide issues include transportation and travel distances for building occupants, impacts on wildlife corridors and hydrology, and energy supply and distribution limitations. Decisions made during site selec- tion and planning impact the surrounding natural habitat, architectural design integration, building energy con- sumption, occupant comfort, and occupant productivity. Significant opportunities for creating greener facilities arise during the site selection and site planning stages of design. Because LANL development zones are pre- determined, identify the various factors affecting devel-

393

Indiana Web Sites  

U.S. Energy Information Administration (EIA)

Indiana Web Sites Other Links : Indiana Electricity Profile: Indiana Energy Profile: Indiana Restructuring: Last Updated: April 2007 . Sites: Links ...

394

Florida Web Sites  

U.S. Energy Information Administration (EIA)

Florida Web Sites Other Links : Florida Electricity Profile: Florida Energy Profile: Florida Restructuring: Last Updated: April 2007 . Sites: Links ...

395

MIDC: Web Site Search  

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

MIDC Web Site Search Enter words or phrases: Search Clear Help Also see the site directory. NREL MIDC...

396

SNR Denton US LLP 1301 K Street, NW Suite 600, East Tower Washington, DC 20005-3364 USA  

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

SNR Denton US LLP SNR Denton US LLP 1301 K Street, NW Suite 600, East Tower Washington, DC 20005-3364 USA Thomas C. Jensen Partner thomas.jensen@snrdenton.com D +1 202 408 3956 M 703 304 5211 T +1 202 408 6400 F +1 202 408 6399 snrdenton.com March 28, 2012 BY E-MAIL Lamont Jackson Office of Electricity Delivery and Energy Reliability Mail Code: OE-20 U.S. Department of Energy 1000 Independence Avenue SW Washington, DC 20585 Re: OE Docket No. RRTT-IR-001 Dear Mr. Jackson:: This letter is submitted on behalf of PPL Electric and Public Service Electric and Gas Company ("PSE&G") 1 ,(referred to herein as "the Companies") with respect to the Susquehanna-Roseland

397

Observations of the Pulsar PSR B1951+32 with the Solar Tower Atmospheric Cherenkov Effect Experiment  

E-Print Network (OSTI)

We present the analysis and results of 12.5 hours of high-energy gamma-ray observations of the EGRET-detected pulsar PSR B1951+32 using the Solar Tower Atmospheric Cherenkov Effect Experiment (STACEE). STACEE is an atmospheric Cherenkov detector, in Albuquerque, New Mexico, that detects cosmic gamma rays using the shower-front-sampling technique. STACEE's sensitivity to astrophysical sources at energies around 100 GeV allows it to investigate emission from gamma-ray pulsars with expected pulsed emission cutoffs below 100 GeV. We discuss the observations and analysis of STACEE's PSR 1951+32 data, accumulated during the 2005 and 2006 observing seasons.

Kildea, J; Ball, J; Carson, J E; Covault, C E; Driscoll, D D; Fortin, P; Gingrich, D M; Hanna, D S; Jarvis, A; Lindner, T; Mller, C; Mukherjee, R; Ong, R A; Ragan, K; Williams, D A

2007-01-01T23:59:59.000Z

398

Simulation and Analysis on the Heat and Mass Transfer Processes of a Three-Stage Tower Type of Solar Desalination Unit  

Science Conference Proceedings (OSTI)

Based on the mechanism of the falling film evaporation and condensation. A three-stage tower type of desalination unit has been designed[1]. Meanwhile the heat and mass transfers are analyzed and studied according to results from the references [2]-[5] ... Keywords: Water treatment technology, Falling film evaporation and condensation, Solar energ

Chen Ziqian; Xie Guo; Zheng Hongfei; Chen Zhili

2009-10-01T23:59:59.000Z

399

Design specifications for the development of the initial validation software (Version 3.0) for processing of NWTC 80-Meter meteorological tower data  

DOE Green Energy (OSTI)

This document describes the design, implementation, and testing of the Initial Validation Software (IVS) for meteorological tower data at the National Renewable Energy Laboratory/National Wind Technology Center. The document outlines all design issues relating to the IVS, including the design process, an outline of the software and testing procedures, and an evaluation of design results after further iterations of the design process.

Johnson, W.; Kelley, N.

2000-02-28T23:59:59.000Z

400

Evaluation of Three-Beam and Four-Beam Profiler Wind Measurement Techniques Using a Five-Beam Wind Profiler and Collocated Meteorological Tower  

Science Conference Proceedings (OSTI)

In this paper a five-beam wind profiler and a collocated meteorological tower are used to estimate the accuracy of four-beam and three-beam wind profiler techniques in measuring horizontal components of the wind. In the traditional three-beam ...

Ahoro Adachi; Takahisa Kobayashi; Kenneth S. Gage; David A. Carter; Leslie M. Hartten; Wallace L. Clark; Masato Fukuda

2005-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "tower site tapajos" 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

Dealing with cultural differences in a 3D virtual classroom: a case study of collaboratively constructing a virtual Tower of Babel  

Science Conference Proceedings (OSTI)

The collaboration project described in this paper involved students across three cooperating institutions, on three different continents in different time zones, building a virtual Tower of Babel in a 3D Collaborative Virtual Environment (3D CVE). Much ... Keywords: 3D collaborative virtual environments, collaborative learning, multi-cultural classroom

Ekaterina Prasolova-Frland; Theodor G. Wyeld; Teng-Wen Chang

2008-03-01T23:59:59.000Z

402

METHODOLOGIES FOR REVIEW OF THE HEALTH AND SAFETY ASPECTS OF PROPOSED NUCLEAR, GEOTHERMAL, AND FOSSIL-FUEL SITES AND FACILITIES. VOLUME 9 OF THE FINAL REPORT ON HEALTH AND SAFETY IMPACTS OF NUCLEAR, GEOTHERMAL, AND FOSSIL-FUEL ELECTRIC GENERATION IN CALIFORNIA  

E-Print Network (OSTI)

equipment e. Stack f. Cooling tower basin Boiler or PWRan impure slurry in the cooling tower basin or pure sulfurd. Salt drift from cooling towers will reduce vegetation (

Nero, A.V.

2010-01-01T23:59:59.000Z

403

Siting Utility-Scale Concentrating Solar Power Projects  

DOE Green Energy (OSTI)

In 2002, Congress asked the U.S. Department of Energy to develop and scope out an initiative to fulfill the goal of having 1,000 megawatts (MW) of new parabolic trough, power tower, and dish engine solar capacity supplying the southwestern United States. In this paper, we present a review of the solar resource for Arizona, California, Nevada, and New Mexico. These four states have the greatest number of ''premium'' solar sites in the country and each has a renewable portfolio standard (RPS). We present information on the generation potential of the solar resources in these states. We also present regions within New Mexico that may be ideally suited for developing large-scale concentrating solar power (CSP) plants because of their proximity to load and their access to unconstrained transmission.

Mehos, M.; Owens, B.

2005-01-01T23:59:59.000Z

404

Strong Links Between Teleconnections and Ecosystem Exchange Found at a Pacific Northwest Old-Growth Forest from Flux Tower and MODIS EVI Data  

SciTech Connect

Variability in three Pacific teleconnection patterns are examined to see if net carbon exchange at a low-elevation, old-growth forest is affected by climatic changes associated with these periodicities. Examined are the Pacific Decadal Oscillation (PDO), Pacific/North American Oscillation (PNA) and El Nino-Southern Oscillation (ENSO). We use nine years of eddy covariance CO{sub 2}, H{sub 2}O and energy fluxes measured at the Wind River AmeriFlux site, Washington, USA and eight years of tower-pixel remote sensing data from the Moderate Resolution Imaging Spectroradiometer (MODIS) to address this question. We compute a new Composite Climate Index (CCI) based on the three Pacific Oscillations to divide the measurement period into positive- (2003 and 2005), negative- (1999 and 2000) and neutral-phase climate years (2001, 2002, 2004, 2006 and 2007). The forest transitioned from an annual net carbon sink (NEP = + 217 g C m{sup -2} year{sup -1}, 1999) to a source (NEP = - 100 g C m{sup -2} year{sup -1}, 2003) during two dominant teleconnection patterns. Net ecosystem productivity (NEP), water use efficiency (WUE) and light use efficiency (LUE) were significantly different (P < 0.01) during positive (NEP = -0.27 g C m{sup -2} day{sup -1}, WUE = 4.1 mg C/g H{sub 2}O, LUE = 0.94 g C MJ{sup -1}) and negative (NEP = +0.37 g C m{sup -2} day{sup -1}, WUE = 3.4 mg C/g H{sub 2}O, LUE = 0.83 g C MJ{sup -1}) climate phases. The CCI was linked to variability in the MODIS Enhanced Vegetation Index (EVI) but not to MODIS Fraction of absorbed Photosynthetically Active Radiation (FPAR). EVI was highest during negative climate phases (1999 and 2000) and was positively correlated with NEP and showed potential for using MODIS to estimate teleconnection-driven anomalies in ecosystem CO{sub 2} exchange in old-growth forests. This work suggests that any increase in the strength or frequency of ENSO coinciding with in-phase, low frequency Pacific oscillations (PDO and PNA) will likely increase CO{sub 2} uptake variability in Pacific Northwest conifer forests.

Wharton, S; Chasmer, L; Falk, M; Paw U, K T

2009-03-12T23:59:59.000Z

405

Particle Physics Education Sites  

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

Particle Physics Education Sites quick reference Education and Information - National Laboratory Education Programs - Women and Minorities in Physics - Other Physics Sites -...

406

Land Validation web site  

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

web site A web site is now available for the Land Validation project. It was created with the purpose of facilitating communication among MODIS Land Validation Principal...

407

Site Lead TQP Standard  

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

of specific site safety functions. C. Must have the ability to provide an overall systematic assessment of site safety performance and to characterize the major issues and...

408

Geothermal: Site Map  

Office of Scientific and Technical Information (OSTI)

GEOTHERMAL TECHNOLOGIES LEGACY COLLECTION - Site Map Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log On HomeBasic Search About Publications...

409

Hanford Site Development Plan  

SciTech Connect

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

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

1990-01-01T23:59:59.000Z

410

Plug & Play Sensors Sites  

Science Conference Proceedings (OSTI)

... Documents. Plug & Play Sensors Sites. ... Plug & Play Sensors Sites. By selecting some of the links below, you will be leaving NIST webspace. ...

2012-06-05T23:59:59.000Z

411

Career Site FAQs | ORNL  

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

Careers Working at ORNL Diversity Postdocs Internships and Postgrad Opportunities Fellowships Career Site FAQs Events and Conferences Careers Home | ORNL | Careers | Career Site...

412

Candidate wind-turbine-generator site summarized meteorological data for December 1976-December 1981. [Program WIND listed  

DOE Green Energy (OSTI)

Summarized hourly meteorological data for 16 of the original 17 candidate and wind turbine generator sites collected during the period from December 1976 through December 1981 are presented. The data collection program at some individual sites may not span this entire period, but will be contained within the reporting period. The purpose of providing the summarized data is to document the data collection program and provide data that could be considered representative of long-term meteorological conditions at each site. For each site, data are given in eight tables and a topographic map showing the location of the meteorological tower and turbine, if applicable. Use of information from these tables, along with information about specific wind turbines, should allow the user to estimate the potential for long-term average wind energy production at each site.

Sandusky, W.F.; Renne, D.S.; Hadley, D.L.

1982-09-01T23:59:59.000Z

413

 

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

on Gas Fluxes Released on Gas Fluxes Released The ORNL DAAC and the LBA DIS announce the release of five data sets associated with the LBA-ECO component of the Large Scale Biosphere-Atmosphere Experiment in Amazonia (LBA). These five data sets provide measurements of biometry, litter decomposition, and gas fluxes in disturbed (logged) and undisturbed tropical forest ecosystems at the Tapajos National Forest in central Brazil. LBA-ECO TG-07 Ground-based Biometry Data at km 83 Site, Tapajos National Forest: 1997. Data set prepared by Michael M. Keller and Michael W. Palace. LBA-ECO TG-07 Litter Decomposition, Tapajos National Forest, Para, Brazil: 2000-2001. Data set prepared by Megan McGroddy. LBA-ECO TG-07 Soil CO2 Flux by Automated Chamber, Para, Brazil: 2001-2003. Data set prepared by Ruth K. Varner and Michael M. Keller.

414

Audit Report Hanford Site Contractors' Use of Site Services,...  

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

Report Hanford Site Contractors' Use of Site Services, WR-B-99-03 Audit Report Hanford Site Contractors' Use of Site Services, WR-B-99-03 To operate the Hanford Site (Site),...

415

Retrieval Group Sites  

Science Conference Proceedings (OSTI)

... Information Retrieval Tools and Systems: ... currently unavailable. Other sites with extensive information retrieval (IR) links: ...

416

DOE - Office of Legacy Management -- Mound Site  

Office of Legacy Management (LM)

Site Fairfield Site Falls City Site Fernald Preserve Gasbuggy Site General Atomics Geothermal Gnome-Coach Site Grand Junction Sites Granite City Site Green River Site Gunnison...

417

Workers Demolish Coal-fired Steam Plant at EM's Portsmouth Site |  

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

Workers Demolish Coal-fired Steam Plant at EM's Portsmouth Site Workers Demolish Coal-fired Steam Plant at EM's Portsmouth Site Workers Demolish Coal-fired Steam Plant at EM's Portsmouth Site September 18, 2013 - 12:00pm Addthis A high-pressure water cannon is used to control dust for the demolition of the X-600 Steam Plant. A high-pressure water cannon is used to control dust for the demolition of the X-600 Steam Plant. One of three large smoke stacks comes down during the demolition. One of three large smoke stacks comes down during the demolition. A high-pressure water cannon is used to control dust for the demolition of the X-600 Steam Plant. One of three large smoke stacks comes down during the demolition. PIKETON, Ohio - Towering above most nearby buildings, the X-600 Coal-fired Steam Plant had been part of the Portsmouth Gaseous Diffusion

418

Workers Demolish Coal-fired Steam Plant at EM's Portsmouth Site |  

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

Workers Demolish Coal-fired Steam Plant at EM's Portsmouth Site Workers Demolish Coal-fired Steam Plant at EM's Portsmouth Site Workers Demolish Coal-fired Steam Plant at EM's Portsmouth Site September 18, 2013 - 12:00pm Addthis A high-pressure water cannon is used to control dust for the demolition of the X-600 Steam Plant. A high-pressure water cannon is used to control dust for the demolition of the X-600 Steam Plant. One of three large smoke stacks comes down during the demolition. One of three large smoke stacks comes down during the demolition. A high-pressure water cannon is used to control dust for the demolition of the X-600 Steam Plant. One of three large smoke stacks comes down during the demolition. PIKETON, Ohio - Towering above most nearby buildings, the X-600 Coal-fired Steam Plant had been part of the Portsmouth Gaseous Diffusion

419

Hanford Site Strategic Facilities Plan: Site planning  

SciTech Connect

This plan revises the Hanford Site Strategic Facilities Plan submitted by Westinghouse Hanford Company in 1988. It separates the Hanford Site facilities into two categories: ''strategically required'' facilities and ''marginal'' facilities. It provides a comparison of future facility requirements against existing capacities and proposed projects to eliminate or consolidate marginal facilities (i.e., those facilities that are not fully utilized or are no longer required to accomplish programmatic missions). The objective is to enhance the operating efficiency of the Hanford Site by maximizing facility use and minimizing unnecessary facility operating and maintenance costs. 11 refs.

1989-03-01T23:59:59.000Z

420

Analyzing the Effects of Temporal Wind Patterns on the Value of Wind-Generated Electricity at Different Sites in California and the Northwest  

E-Print Network (OSTI)

or production data from tall towers are needed before we canhub-height data from tall-tower anemometers or operatingor production data from tall towers are needed before we can

Fripp, Matthias; Wiser, Ryan

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tower site tapajos" 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

Site Manager Kansas City Site Office  

National Nuclear Security Administration (NNSA)

Kansas City Site Office (KCSO) Workforce Diversity FY 2010 NNSA Service Center EEO and Diversity Program Office PO Box 5400 Albuquerque, NM 87185 (505) 845-5517 TTY (800)...

422

Redesigned Web Sites  

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

Redesigned Web Sites In an ongoing effort to improve services to our customers, the ORNL DAAC is pleased to announce that it has released a major revision to its Web site. The new...

423

Web Site Metadata  

E-Print Network (OSTI)

International World Wide Web Conference, pages 11231124,Erik Wilde. Site Metadata on the Web. In Proceedings of theUCB ISchool Report 2009-028 Web Site Metadata [4] David R.

Wilde, Erik; Roy, Anuradha

2009-01-01T23:59:59.000Z

424

Towoomba Site Image #1  

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

Graphs Image TWM-1: General view of the Towoomba savanna grassland site, South Africa. (Photograph by Dr. R.J. Scholes, Forestek, CSIR, Pretoria, South Africa). Go to Site...

425

2012 Site Visit Manual  

Science Conference Proceedings (OSTI)

... before the first day on-site, all team members meet at their hotel to finalize ... All of the prework done above will save you much time and energy on-site ...

2012-09-04T23:59:59.000Z

426

ORNL Site Ofice  

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

ORNL Site Ofice ORNL Site Ofice P.O. Box 2008 Oak Ridge, Tennessee 37831-6269 January 28, 2013 MEMORANDUM FOR GREGORY H. WOODS GENERAL COUNSEL GC-1 FROM: SUBJECT: ��MK = MOORE, MANAGER lF �NL SITE OFFICE ANNUAL NATIONAL ENVIRONMENTAL POLICY ACT (NEPA) PLANNING SUMMARY FOR 2013- OAK RIDGE NATIONAL LABORATORY (ORNL) SITE OFFICE (OSO) This correspondence transmits the Annual NEPA Planning Summary for 2013 for OSO.

427

Completed Sites Listing  

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

As of fiscal year 2012, EM (and its predecessor organization UMTRA) completed cleanup and closed 90 sites in 24 states.

428

Idaho Site Nuclear Facilities  

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

Site Nuclear Facilities Idaho Idaho National Laboratorys (INL) Idaho Closure Project (ICP) This page was last updated on May 16...

429

DOE Site List  

Office of Environmental Management (EM)

Links Links Central Internet Database CID Photo Banner DOE Site List Site Geo Site Code State Operations Office1 DOE Programs Generating Streams at Site DOE Programs Managing Facilities Associated Data2 Acid/Pueblo Canyons ACPC NM Oak Ridge Waste/Media, Facilities Airport Substation CA Western Area Power Administration Facilities Akron Hill Communication Site CO Western Area Power Administration Facilities Akron Substation CO Western Area Power Administration Facilities AL Complex NM Albuquerque DP Facilities Alba Craft ALCL OH Oak Ridge Facilities Albany Research Center AMRC OR Oak Ridge Facilities Alcova Switchyard WY Western Area Power Administration Facilities Aliquippa Forge ALFO PA Oak Ridge Facilities

430

Site Environmental Report, 1993  

SciTech Connect

The Site Environmental Report (SER) is prepared annually in accordance with DOE Order 5400.1, ``General Environmental Protection Program.`` This 1993 SER provides the general public as well as scientists and engineers with the results from the site`s ongoing Environmental Monitoring Program. Also included in this report is information concerning the site`s progress toward achieving full compliance with requirements set forth by DOE, US Environmental Protection Agency (USEPA), and Ohio EPA (OEPA). For some readers, the highlights provided in the Executive Summary may provide sufficient information. Many readers, however, may wish to read more detailed descriptions of the information than those which are presented here.

Not Available

1994-06-01T23:59:59.000Z

431

Potential Release Sites  

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

PRS PRS Potential Release Sites Legacy sites where hazardous materials are found to be above acceptable levels are collectively called potential release sites. Contact Environmental Communication & Public Involvement P.O. Box 1663 MS M996 Los Alamos, NM 87545 (505) 667-0216 Email Less than 10 percent of the total number of potential release sites need to go through the full corrective action process. What are potential release sites? Potential release sites are areas around the Laboratory and the town of Los Alamos at which hazardous materials from past activities have been found. Some examples of potential release sites include septic tanks and associated drain lines chemical storage areas wastewater outfalls material disposal areas incinerators sumps firing ranges

432

Acoustic Imaging Evaluation of Juvenile Salmonid Behavior in the Immediate Forebay of the Water Temperature Control Tower at Cougar Dam, 2010  

Science Conference Proceedings (OSTI)

This report presents the results of an evaluation of juvenile Chinook salmon (Oncorhynchus tshawytscha) behavior at Cougar Dam on the south fork of the McKenzie River in Oregon in 2010. The study was conducted by the Pacific Northwest National Laboratory for the U.S. Army Corps of Engineers (USACE). The overall goal of the study was to characterize juvenile salmonid behavior and movement patterns in the immediate forebay of the Water Temperature Control (WTC) tower of the dam for USACE and fisheries resource managers use in making decisions about bioengineering designs for long-term structures and/or operations to facilitate safe downstream passage for juvenile salmonids. We collected acoustic imaging (Dual-Frequency Identification Sonar; DIDSON) data from March 1, 2010, through January 31, 2011. Juvenile salmonids (hereafter, called 'fish') were present in the immediate forebay of the WTC tower throughout the study. Fish abundance index was low in early spring (fish per sample-day), increased in late April, and peaked on May 19 (6,039 fish). A second peak was observed on June 6 (2904 fish). Fish abundance index decreased in early June and remained low in the summer months (fish per sample-day). During the fall and winter, fish numbers varied with a peak on November 10 (1881 fish) and a minimum on December 7 (12 fish). A second, smaller, peak occurred on December 22 (607 fish). A univariate statistical analysis indicated fish abundance index (log10-transformed) was significantly (Pfish abundance (log-transformed index values) using two independent variables of mean forebay elevation and the log10 of the forebay elevation range. From the approximate fish length measurements made using the DIDSON imaging software, the average fish length during early spring 2010 was 214 {+-} 86 mm (standard deviation). From May through early November, the average fish length remained relatively consistent (132 {+-} 54 mm), after which average lengths increased to 295 {+-} 148 mm for mid-November though early December. From mid-December through January the average fish length decreased to 151 {+-} 76 mm. Milling in front of the WTC tower was the most common fish behavior observed throughout the study period. Traversing along the front of the tower, east-to-west and west-to-east, was the next common behavior. The percentage of fish events showing movement from the forebay to the tower or from the tower to the forebay was generally low throughout the spring, summer, and early fall (0 to 30% for both directions combined, March through early November). From mid-November 2010 through the end of the study (January 31, 2011), the combined percentages of fish moving into and out of the tower were higher (25 to 70%) than during previous months of the study. Schooling behavior was most distinct in the spring. Schooling events were present in 30 to 96% of the fish events during that period, with a peak on May 19. Schooling events were also present in the summer, but at lower numbers. With the exception of some schooling in mid-December, few to no schooling events were observed in the fall and winter months. Diel distributions for schooling fish during spring and fall months indicate schooling was concentrated during daylight hours and no schooling was observed at night. However, in December, schooling occurred at night, after midnight, and during daylight hours. Predator activity, most likely bull trout or rainbow trout according to a USACE biologist, was observed during late spring, when fish abundance index and schooling were highest for the year, and again in the fall months when fish events increased from a summer low. No predator activity was observed in the summer, and little activity occurred during the winter months.

Khan, Fenton; Johnson, Gary E.; Royer, Ida M.; Phillips, Nathan RJ; Hughes, James S.; Fischer, Eric S.; Ham, Kenneth D.; Ploskey, Gene R.

2012-04-01T23:59:59.000Z

433

Siting Handbook WIND ENERGY SITING HANDBOOK  

E-Print Network (OSTI)

This Wind Energy Siting Handbook (the "Handbook") presents general information about regulatory and environmental issues associated with the development and siting of wind energy projects in the United States. It is intended to be a general guidance document providing technical information and tools for identifying potential issues that may arise with wind energy projects. The Handbook contains links to resources on the Internet. Those links are provided solely as aids to assist you in locating other Internet resources that may be of interest. They are not intended to state or imply that AWEA or the Contributors endorse, approve, sponsor, or are affiliated or associated with those linked sites. The Handbook is not intended as a comprehensive discussion of all wind energy project issues and should be used in conjunction with other available resources. The Handbook also is not intended as legal or environmental advice or as a best practices manual, nor should it be considered as such. Because the Handbook is only a general guidance document, independent legal counsel and/or environmental consulting services should be obtained to further explore any wind energy siting issue, matter, or project. In reviewing all or any part of the Handbook, you acknowledge and understand that the Handbook is only a general guidance document and does not constitute a best practices manual, legal or environmental advice, or a legal or other relationship with the American Wind Energy Association ("AWEA") or any of the persons or entities

unknown authors

2008-01-01T23:59:59.000Z

434

NETL: Site Environmental Quality  

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

Site Environmental Quality Site Environmental Quality About NETL Site Environmental Quality - Certified to ISO 14001:2004 Questions about NETL's Environment, Safety and Health Management System may be directed to Michael Monahan, 304-285-4408, michael.monahan@netl.doe.gov. NETL has implemented an Environment, Safety and Health (ES&H) Management System, based on DOE's Integrated Safety Management System, the International Organization for Standardization (ISO) 14000 series, and the Occupational Health and Safety Assessment (OHSAS) 18000 series. While the original scope of the ES&H Management System included the Morgantown and Pittsburgh sites, in fiscal year 2010, the Albany site was incorporated into the existing ES&H Management System. In addition, all three sites underwent ISO 14001:2004 recertification audits and Morgantown and

435

WCI | Site 300 CORS  

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

: CORS : CORS Weather Site Access Contained Firing Facility (CFF) Continuosly Operating Reference Station (CORS) CORS logo How to access GPS satellite data The National Geodetic Survey(NGS) Home Page for the S300 CORS base station is: http://www.ngs.noaa.gov/CORS/ Type S300 into "enter SiteID" To get user-friendly data: http://www.ngs.noaa.gov/UFCORS/ The GPS data will be in "receiver independent exchange" (RINEX) format, version 2.10. CORS Proxy Data Availability Details: NGS Reference Position Information Site 300 CORS Reference Position RTK Transmission Frequency NGS s300 Site Log NGS s300 Site Map Links to other GPS sites Last modified: July 27, 2011 UCRL-MI-134143 | Privacy & Legal Notice Contact: wci-webteam@llnl.gov NNSA Logo DOE Logo

436

MONTICELLO NPL SITES  

Office of Legacy Management (LM)

.. ' \ MONTICELLO NPL SITES FFA QUARTERLY REPORT: October 1 -December 31, 2008 DOE Site Manager: Jalena Dayvault JR 7CJ7 This report summarizes current project status and activities implemented during October tiU'ough December 2008, and provides a schedule of planned near term activities for the Monticello MIII Tailings Site (MMTS) and the Monticello Vicinity Properties (MVP) NPL sites. This report also includes repository and Pond 4 leachate collection data, quarterly site inspection repmis, site meteorological data, and monitoring summary for tlw ex situ ground water treatment system. 1.0 MMTS Activities/Status Repository and Pond 4 · * Monthly and quarterly inspection of the repository identified no abnormalities (see attached repmis). .

437

ColumbusSites.cdr  

Office of Legacy Management (LM)

Columbus, Ohio, Sites consist of two geographically Columbus, Ohio, Sites consist of two geographically separate properties owned by the Battelle Memorial Institute: the King Avenue site, located in the city of Columbus, and the West Jefferson site, located approx- imately 15 miles west of Columbus. Battelle conducted extensive nuclear research at both locations for the U.S. Department of Energy (DOE) and its predecessor agencies between 1943 and 1986. The research resulted in contamination of soil, buildings, and equipment with radioactive and mixed waste materials. Environmental cleanup of the sites began in 1986. The 6-acre King Avenue site, which was historically a part of the federal government's fuel and target fab- rication program, consisted of 9 buildings and the surrounding grounds. Nuclear research conducted at the

438

Acoustic Imaging Evaluation of Juvenile Salmonid Behavior in the Immediate Forebay of the Water Temperature Control Tower at Cougar Dam, 2010  

SciTech Connect

This report presents the results of an evaluation of juvenile Chinook salmonid (Oncorhynchus tshawytscha) behavior in the immediate forebay of the Water Temperature Control (WTC) tower at Cougar Dam in 2010. The study was conducted by the Pacific Northwest National Laboratory for the U.S. Army Corps of Engineers. The overall goal of the study was to characterize juvenile salmonid behavior and movement patterns in the immediate forebay of the WTC tower for fisheries resource managers to use to make decisions on bioengineering designs for long-term structures and/or operations to facilitate safe downstream passage for juvenile salmonids. We collected acoustic imaging (Dual-Frequency Identification Sonar; DIDSON) data from February 1, 2010 through January 31, 2011 to evaluate juvenile salmonid behavior year-round in the immediate forebay surface layer of the WTC tower (within 20 m, depth 0-5 m). From October 28, 2010 through January 31, 2011 a BlueView acoustic camera was also deployed in an attempt to determine its usefulness for future studies as well as augment the DIDSON data. For the DIDSON data, we processed a total of 35 separate 24-h periods systematically covering every other week in the 12-month study. Two different 24-hour periods were processed for the BlueView data for the feasibility study. Juvenile salmonids were present in the immediate forebay of the WTC tower throughout 2010. The juvenile salmonid abundance index was low in the spring (<200 fish per sample-day), began increasing in late April and peaked in mid-May. Fish abundance index began decreasing in early June and remained low in the summer months. Fish abundance increased again in the fall, starting in October, and peaked on November 8-9. A second peak occurred on December 22. Afterwards, abundance was low for the rest of the study (through January 2011). Average fish length for juvenile salmonids during early spring 2010 was 214 {+-} 86 mm (standard deviation). From May through early November, average fish length remained relatively consistent (132 {+-} 39 mm), after which average lengths increased to 294 {+-} 145 mm for mid-November though early December. Fish behavior analysis indicates milling in front of the intake tower was the most common behavior observed throughout the study period (>50% of total fish events). The next most common movement patterns were fish traversing along the front of the tower, east-to-west and west-to-east. The proportion of fish events seen moving into (forebay to tower) or out of (tower to forebay) the tower was generally low throughout the spring, summer, and early fall for both directions combined. From mid-December 2010 through the end of the study, the combined proportions of fish moving into and out of the tower were higher than previous months of this study. Schooling behavior was most distinct in the spring from late April through mid-June. Schooling events were present in 30 - 96% of the fish events during that period, with a peak in mid-May. Schooling events were also present in the summer, but at lower numbers. Diel distributions for schooling fish during spring, fall, and winter months indicate schooling was concentrated during daylight hours. No schooling was observed at night. Predator activity was observed during late spring, when fish abundance and schooling were highest for the year, and again in the fall months when fish events increased from a summer low. No predator activity was observed in the summer, and little activity occurred during the winter months. For the two days of BlueView data analyzed for vertical distribution in the forebay, a majority of fish (>50%) were present in the middle of the water column (10 - 20 m deep). Between 20 and 41 % of total fish abundance were found in the bottom of the water column (20 - 30 m deep). Few fish were observed in the top 10 m of the water column.

Khan, Fenton; Johnson, Gary E.; Royer, Ida M.; Phillips, Nathan RJ; Hughes, James S.; Fischer, Eric S.; Ploskey, Gene R.

2011-10-01T23:59:59.000Z

439

Acoustic Imaging Evaluation of Juvenile Salmonid Behavior in the Immediate Forebay of the Water Temperature Control Tower at Cougar Dam, 2010  

Science Conference Proceedings (OSTI)

This report presents the results of an evaluation of juvenile Chinook salmonid (Oncorhynchus tshawytscha) behavior in the immediate forebay of the Water Temperature Control (WTC) tower at Cougar Dam in 2010. The study was conducted by the Pacific Northwest National Laboratory for the U.S. Army Corps of Engineers. The overall goal of the study was to characterize juvenile salmonid behavior and movement patterns in the immediate forebay of the WTC tower for fisheries resource managers to use to make decisions on bioengineering designs for long-term structures and/or operations to facilitate safe downstream passage for juvenile salmonids. We collected acoustic imaging (Dual-Frequency Identification Sonar; DIDSON) data from February 1, 2010 through January 31, 2011 to evaluate juvenile salmonid behavior year-round in the immediate forebay surface layer of the WTC tower (within 20 m, depth 0-5 m). From October 28, 2010 through January 31, 2011 a BlueView acoustic camera was also deployed in an attempt to determine its usefulness for future studies as well as augment the DIDSON data. For the DIDSON data, we processed a total of 35 separate 24-h periods systematically covering every other week in the 12-month study. Two different 24-hour periods were processed for the BlueView data for the feasibility study. Juvenile salmonids were present in the immediate forebay of the WTC tower throughout 2010. The juvenile salmonid abundance index was low in the spring (fish per sample-day), began increasing in late April and peaked in mid-May. Fish abundance index began decreasing in early June and remained low in the summer months. Fish abundance increased again in the fall, starting in October, and peaked on November 8-9. A second peak occurred on December 22. Afterwards, abundance was low for the rest of the study (through January 2011). Average fish length for juvenile salmonids during early spring 2010 was 214 {+-} 86 mm (standard deviation). From May through early November, average fish length remained relatively consistent (132 {+-} 39 mm), after which average lengths increased to 294 {+-} 145 mm for mid-November though early December. Fish behavior analysis indicates milling in front of the intake tower was the most common behavior observed throughout the study period (>50% of total fish events). The next most common movement patterns were fish traversing along the front of the tower, east-to-west and west-to-east. The proportion of fish events seen moving into (forebay to tower) or out of (tower to forebay) the tower was generally low throughout the spring, summer, and early fall for both directions combined. From mid-December 2010 through the end of the study, the combined proportions of fish moving into and out of the tower were higher than previous months of this study. Schooling behavior was most distinct in the spring from late April through mid-June. Schooling events were present in 30 - 96% of the fish events during that period, with a peak in mid-May. Schooling events were also present in the summer, but at lower numbers. Diel distributions for schooling fish during spring, fall, and winter months indicate schooling was concentrated during daylight hours. No schooling was observed at night. Predator activity was observed during late spring, when fish abundance and schooling were highest for the year, and again in the fall months when fish events increased from a summer low. No predator activity was observed in the summer, and little activity occurred during the winter months. For the two days of BlueView data analyzed for vertical distribution in the forebay, a majority of fish (>50%) were present in the middle of the water column (10 - 20 m deep). Between 20 and 41 % of total fish abundance were found in the bottom of the water column (20 - 30 m deep). Few fish were observed in the top 10 m of the water column.

Khan, Fenton; Johnson, Gary E.; Royer, Ida M.; Phillips, Nathan RJ; Hughes, James S.; Fischer, Eric S.; Ploskey, Gene R.

2011-10-01T23:59:59.000Z

440

Site environmental report summary  

Science Conference Proceedings (OSTI)

In this summary of the Fernald 1992 Site Environmental Report the authors will describe the impact of the Fernald site on man and the environment and provide results from the ongoing Environmental Monitoring Program. Also included is a summary of the data obtained from sampling conducted to determine if the site complies with DOE, US Environmental Protection Agency (USEPA), and Ohio EPA (OEPA) requirements. These requirements are set to protect both man and the environment.

Not Available

1992-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "tower site tapajos" 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

Analysis of 2011 Meteorological Data from the Knolls Atomic Power Laboratory and Kesselring Site Operations Facilities  

SciTech Connect

Both the Knolls Atomic Power Laboratory (KAPL) in Schenectady, NY and the Kesselring Site Operations (KSO) facility near Ballston Spa, NY are required to estimate the effects of hypothetical emissions of radiological material from their respective facilities by the US Environmental Protection Agency (EPA), which regulates these facilities. An atmospheric dispersion model known as CAP88, which was developed and approved by the EPA for such purposes, is used by KAPL and KSO to meet this requirement. CAP88 calculations over a given time period are based on statistical data on the meteorological conditions for that period. Both KAPL and KSO have on-site meteorological towers which take atmospheric measurements at a frequency ideal for EPA regulatory model input. However, an independent analysis and processing of the meteorological data from each tower is required to derive a data set appropriate for use in the CAP88 model. The National Atmospheric Release Advisory Center (NARAC) was contracted by KAPL to process the on-site data for the calendar year 2011. The purpose of this document is to: (1) summarize the procedures used in the preparation/analysis of the 2011 meteorological data; and (2) document adherence of these procedures to the guidance set forth in 'Meteorological Monitoring Guidance for Regulatory Modeling Applications', EPA document - EPA-454/R-99-005 (EPA-454). This document outlines the steps in analyzing and processing meteorological data from the Knolls Atomic Power Laboratory and Kesselring Site Operations facilities into a format that is compatible with the steady state dispersion model CAP88. This process is based on guidance from the EPA regarding the preparation of meteorological data for use in regulatory dispersion models. The analysis steps outlined in this document can be easily adapted to process data sets covering time period other than one year. The procedures will need to be modified should the guidance in EPA-454 be updated or revised.

Aluzzi, F J

2012-02-27T23:59:59.000Z

442

Nairobi Site Image #1  

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

NRB-1: Canopy reflectance measurement within the Nairobi grassland site, Kenya. (Prof. Jenesio Kinyamario, University of Nairobi, is using a rednear-infrared spectral ratio meter....

443

CPER Site Image #1  

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

CPR-1: Weather stationexclosure within the CPER grassland site, Colorado, USA. (Mark Lindquist, Colorado State University, is checking a wetdry deposition gauge. Photograph taken...

444

1994 Site environmental report  

Science Conference Proceedings (OSTI)

The Fernald site is a Department of Energy (DOE)-owned facility that produced high-quality uranium metals for military defense for nearly 40 years. DOE suspended production at the site in 1989 and formally ended production in 1991. Although production activities have ceased, the site continues to examine the air and liquid pathways as possible routes through which pollutants from past operations and current remedial activities may leave the site. The Site Environmental Report (SER) is prepared annually in accordance with DOE Order 5400.1, General Environmental Protection Program. This 1994 SER provides the general public as well as scientists and engineers with the results from the site`s ongoing Environmental Monitoring Program. Also included in this report is information concerning the site`s progress toward achieving full compliance with requirements set forth by DOE, U.S. Environmental Protection Agency (USEPA), and Ohio EPA (OEPA). For some readers, the highlights provided in this Executive Summary may provide sufficient information. Many readers, however, may wish to read more detailed descriptions of the information than those which are presented here. All information presented in this summary is discussed more fully in the main body of this report.

NONE

1995-07-01T23:59:59.000Z

445

Site Transition Guidance  

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

Site Transition Guidance March 2010 Office of Environmental Management U.S. Department of Energy Washington D. C. 20585 Standard Review Plan (SRP) Technical Framework for EM...

446

Badkhyz Site Image #1  

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

BDK-1: Experiment to study the effect of UV-b solar radiation on litter decomposition at the Badkhyz grassland site, Turkmenistan. (Prof. Leonid Rodin, Komarov Botanical Institute,...

447

historic site award  

Science Conference Proceedings (OSTI)

... Honors 'Historic Site' of NBS Physics Discovery. ... The American Physical Society (APS) has named ... revealed that in certain nuclear processes pairs ...

2011-11-16T23:59:59.000Z

448

RMOTC RMOTC -Site Map  

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

Site Map Home About Us About Us Staff Field Info History Photo Gallery Awards & Testimonials Safety Initiatives Outreach & Community News Latest News Newsletters Press Releases...

449

2004 Environmental Site Report  

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

phenolic compounds. Tests of underground coal gasification and tests of in-situ oil shale retorting resulted in contamination at these sites. The largest cleanup activity...

450

SITE LIGHTING FOUNDATIONS  

SciTech Connect

The purpose of this analysis is to design structural foundations for the Site Lighting. This analysis is in support of design drawing BABBDF000-01717-2100-23016.

M. Gomez

1995-01-17T23:59:59.000Z

451

Site Lead TQP Standard  

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

Qualification Standard for the Office of Safety and Emergency Management Evaluations Site Lead Program May 2011 Office of Enforcement and Oversight Office of Health, Safety and...

452

2001 SITE ENVIRONMENTAL REPORT  

Science Conference Proceedings (OSTI)

THE SITE ENVIRONMENTAL REPORT FOR BROOKHAVEN NATIONAL LABORATORY FOR THE CALENDAR YEAR 2001, AS REQUIRED BY DOE ORDER 231.1.

BROOKHAVEN NATIONAL LABORATORY

2002-09-01T23:59:59.000Z

453

Site Environmental Report  

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

30, 2003. However, seven SWMUs could not be remediated to No Further Action (NFA) status. The long- term monitoring of these inactive waste sites has been incorporated into...

454

Kursk Site Image #1  

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

Graphs Image KRS-1: Clipping above-ground biomass at the Kursk grassland site, Russia. (Dr. Kira Khodashova and student Nina N., Moscow State University, are estimating monthly...

455

SRS Site Needs  

SRS Site Needs Neil R. Davis Program Manager Technology Development and Tank Closure Projects Washington Savannah River Company Aluminum/Chromium Leaching Technical ...

456

Calabozo Site Image #1  

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

CLB-1: General view of the Trachypogon savanna at the Calabozo grassland site, Venezuela. (Trees include Curatella americana, Bowdichia virgilioides and Byrsonima crassifolia....

457

1999 Site Environmental Report  

SciTech Connect

The Site Environmental Report for Brookhaven National Laboratory for the calendar year 1999, as required by DOE Order 231.1.

NONE

2000-09-01T23:59:59.000Z

458

Historical Photographs: Idaho Sites  

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

Idaho Sites Small Image 1. Measuring intentional radiation release at the Idaho experimental dairy farm (1964). (195Kbytes) Small Image 2. Measuring intentional radiation...

459

Pantex Site - Reports  

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

Reports Pantex Site Activity Reports 2013 Pantex Plant Operational Awareness Oversight, May 2013 Review Reports 2012 Assessment of Nuclear Safety Culture at the Pantex Plant,...

460

LM Sites | Department of Energy  

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

LM Sites LM Sites Alaska Puerto Rico Continental US Search Search Legacy Management Site Documents > Additional Information Guidance and Reports InspectionSampling Schedule...

Note: This page contains sample records for the topic "tower site tapajos" 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

Hanford Site Video Library  

DOE Data Explorer (OSTI)

The Hanford Site Video Library currently makes 30 videos related to the sites history and the clean-up available for online viewing. The Video Library (also referred to as the Broadcast Archive) can be searched by keywords in the title or description. They can also be browsed in a complete list.

462

Site characterization handbook  

SciTech Connect

This Handbook discusses both management and technical elements that should be considered in developing a comprehensive site characterization program. Management elements typical of any project of a comparable magnitude and complexity are combined with a discussion of strategies specific to site characterization. Information specific to the technical elements involved in site characterization is based on guidance published by the Nuclear Regulatory Commission (NRC) with respect to licensing requirements for LLW disposal facilities. The objective of this Handbook is to provide a reference for both NRC Agreement States and non-Agreement States for use in developing a comprehensive site characterization program that meets the specific objectives of the State and/or site developer/licensee. Each site characterization program will vary depending on the objectives, licensing requirements, schedules/budgets, physical characteristics of the site, proposed facility design, and the specific concerns raised by government agencies and the public. Therefore, the Handbook is not a prescriptive guide to site characterization. 18 refs., 6 figs.

Not Available

1988-06-01T23:59:59.000Z

463

Trouble tower game demo  

Science Conference Proceedings (OSTI)

The Construction Industry has one of the highest rates of injury and fatality in Australia and across the world. A key challenge for OH&S training is to engage learners. Construction students tend to be experiential learners and class room teaching is ... Keywords: construction industry, hazard identification, learning, occupational health and safety, serious game

Stefan Greuter, Susanne Tepe, Frank Boukamp, Ron Wakefield

2013-09-01T23:59:59.000Z

464

Cooling Towers Make Money  

E-Print Network (OSTI)

Question:-Why is the low bidder system a sacred cow? If contractors understand, by specifications, that the second low bidder will be awarded the contract all bidders will do their best to provide 100% performing equipment. If corners are cut, that will produce a low bid which will not be awarded the contract. Case histories are delineated indicated how low bidders by cutting quality, caused facility many times greater losses in dollars than the difference between the low bid and the second low bid. Changing the established low bid system, takes on the task of being Don Quixote. Nobody listens.

Burger, R.

1995-04-01T23:59:59.000Z

465

MONTICELLO NPL SITES  

Office of Legacy Management (LM)

April 1 - June 30, 2008 April 1 - June 30, 2008 DOE Site Manager: Jalena Maestas This report summarizes current project status, activities implemented during April through June 2008, and provides a schedule of planned near term activities, for the Monticello Mill Tailings Site (MMTS) and the Monticello Vicinity Properties (MVP) NPL sites. This report also includes repository and Pond 4 leachate collection data, quarterly site inspection results, and site meteorological monitoring data. 1.0 MMTS Activities/Status Repository and Pond 4 * Monthly and quarterly inspection of the repository identified no abnormalities. * Shrub seedlings planted last fall had a poor survival rate. * New damage to shrubs and vole infestation is not evident. * Monthly inspection of Pond 4 identified no abnormalities.

466

site_transition.cdr  

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

Legacy Legacy Management U.S. DEPARTMENT OF This fact sheet explains the process for transferring a site to the U.S. Department of Energy Office of Legacy Management. Site Transition Process Upon Cleanup Completion Introduction Transition Process After environmental remediation is completed at a site and there is no continuing mission, responsibility for the site and the associated records are transferred to the U.S. Department of Energy (DOE) Office of Legacy Management for post-closure management. Where residual hazards (e.g., disposal cells, ground water contamination) remain, active long-term surveillance and maintenance will be required to ensure protection of human health and the environment. The DOE Office of Legacy Management (LM) established transition guidance for remediated sites that will transfer to LM for long-term surveillance and maintenance. The

467

Web Site Map  

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

Help » Web Site Map Help » Web Site Map Web Site Map The links listed below include all pages on the site except document topic pages. Home Privacy/Security Help Web Site Map Mailing Services Remove me from the List Contact Us About Us News and Events News Archives News/Media FAQs Internet Resources Documents DUF6 EIS Historical Context What is an EIS? Why EIS is Needed Who is Responsible? EIS Process EIS Topics EIS Alternatives EIS Schedule Public Involvement Opportunities Public Comment Form For More Info DUF6 Management and Uses Management Responsibilities DUF6 Storage How DUF6 is Stored Where DUF6 is Stored Cylinder Leakage DUF6 Storage Safety DUF6 PEIS Cylinder Surveillance and Maintenance Conversion Potential DU Uses "Business Case" for R&D on Beneficial Uses of DU Catalysts for Destruction of Air Pollutants

468

MONTICELLO NPL SITES  

Office of Legacy Management (LM)

January 1 - March 31, 2008 January 1 - March 31, 2008 DOE Site Manager: Jalena Maestas This report summarizes current project status, activities implemented during January through March 2008, and provides a schedule of planned near term activities, for the Monticello Mill Tailings Site (MMTS) and the Monticello Vicinity Properties (MVP) NPL sites. This report also includes repository and Pond 4 leachate collection data, quarterly site inspection results, and site meteorological monitoring data. The first semi-annual FFA meeting of 2008 was held at UDEQ in Salt Lake City, Utah, March 26 and 27, 2008. Minutes and action items resulting from that meeting will be prepared under separate cover pending review and concurrence by EPA and UDEQ. Draft minutes and action items are scheduled for submittal by May 1, 2008.

469

Site decommissioning management plan  

Science Conference Proceedings (OSTI)

The Nuclear Regulatory Commission (NRC) staff has identified 48 sites contaminated with radioactive material that require special attention to ensure timely decommissioning. While none of these sites represent an immediate threat to public health and safety they have contamination that exceeds existing NRC criteria for unrestricted use. All of these sites require some degree of remediation, and several involve regulatory issues that must be addressed by the Commission before they can be released for unrestricted use and the applicable licenses terminated. This report contains the NRC staff`s strategy for addressing the technical, legal, and policy issues affecting the timely decommissioning of the 48 sites and describes the status of decommissioning activities at the sites.

Fauver, D.N.; Austin, J.H.; Johnson, T.C.; Weber, M.F.; Cardile, F.P.; Martin, D.E.; Caniano, R.J.; Kinneman, J.D.

1993-10-01T23:59:59.000Z

470

Related Data Sites  

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

Related Data Sites Related Data Sites CDIAC has listed the following Web sites because these sites offer high-quality data sets (not available through CDIAC) from a variety of global-change themes. These links will take you outside of CDIAC, therefore, we are not responsible for the content or intent of these outside links. This list is not intended to be comprehensive, but we do hope you find it useful if you cannot find what you are looking for here at CDIAC. Multi-Agency Sites Global Change Data and Information System (GCDIS) GCDIS is a collection of distributed information systems operated by government agencies involved in global change research. GCDIS provides global change data to scientists and researchers, policy makers, educators, industry, and the public at large and includes multidisciplinary data from

471

Environmental assessment of remedial action at the Gunnison Uranium Mill Tailings Site, Gunnison, Colorado. [UMTRA Project  

SciTech Connect

This document assesses and compares the environmental impacts of various alternatives for remedial action at the Gunnison uranium of mill tailings site located 0.5 miles south of Gunnison, Colorado. The site covers 56 acres and contains 35 acres of tailings, 2 of the original mill buildings and a water tower. The Uranium Mill Tailings Radiation Control of Act of 1978 (UMTRCA), Public Law 95-604, authorizes the US Department of Energy to clean up the site to reduce the potential health impacts associated with the residual radioactive materials remaining at the site and at associated (vicinity) properties off the site. The US Environmental Protection Agency promulgated standards for the remedial actions (40 CFR 192). Remedial actions must be performed in accordance with these standards and with the occurrence of the Nuclear Regulatory Commission. Four alternatives have been addressed in this document. The first alternative is to consolidate the tailings and associated contaminated soils into a recontoured pile on the southern portion of the existing site. A radon barrier of silty clay would be constructed over the pile and various erosion control measures would be taken to assure the long-term integrity of the pile. Two other alternatives which involve moving the tailings to new locations are assessed in this document. These alternatives generally involve greater short-term impacts and are more costly but would result in the tailings being stabilized in a location farther from the city of Gunnison. The no action alternative is also assessed.

Bachrach, A.; Hoopes, J.; Morycz, D. (Jacobs Engineering Group, Inc., Pasadena, CA (USA)); Bone, M.; Cox, S.; Jones, D.; Lechel, D.; Meyer, C.; Nelson, M.; Peel, R.; Portillo, R.; Rogers, L.; Taber, B.; Zelle, P. (Weston (Roy F.), Inc., Washington, DC (USA)); Rice, G. (Sergent, Hauskins and Beckwith (USA))

1984-12-01T23:59:59.000Z

472

Untitled Page -- Other Sites Summary  

Office of Legacy Management (LM)

Other Sites Summary Other Sites Summary Search Other Sites Considered Sites Other Sites All LM Quick Search All Other Sites 11 E (2) Disposal Cell - 037 ANC Gas Hills Site - 040 Argonne National Laboratory - West - 014 Bodo Canyon Cell - 006 Burro Canyon Disposal Cell - 007 Cheney Disposal Cell - 008 Chevron Panna Maria Site - 030 Clive Disposal Cell - 036 Commercial (Burial) Disposal Site Maxey Flats Disposal Site - KY 02 Conoco Conquista Site - 031 Cotter Canon City Site - 009 Dawn Ford Site - 038 EFB White Mesa Site - 033 Energy Technology Engineering Center - 044 Estes Gulch Disposal Cell - 010 Exxon Ray Point Site - 032 Fermi National Accelerator Laboratory - 016 Fernald Environmental Management Project - 027 Fort St Vrain - 011 Geothermal Test Facility - 001 Hecla Durita Site - 012

473

MONTICELLO NPL SITES  

Office of Legacy Management (LM)

MONTICELLO NPL SITES MONTICELLO NPL SITES FFA QUARTERLY REPORT: October 1 - December 31, 2007 DOE Site Manager: Jalena Maestas 1.0 MMTS Activities/Status Repository and Pond 4 * Monthly and quarterly inspection of the repository identified no problems that have not been addressed. (inspection checklists attached). * Monthly inspection of Pond 4 identified no unacceptable conditions. * Pond 4 leachate detection and removal systems continue to operate at normal levels (leachate pumping summary attached). * Repository leachate collection and removal system (LCRS) and leachate collection system (LDS) continue to operate at normal and acceptable levels (leachate pumping summary attached). * Portions of repository cover were planted with rabbitbrush seedlings to repair areas

474

Site Map - Pantex Plant  

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

Site Map Site Map Site Map Page Content Pantex.com Mission & Strategies Mission National Security Nuclear Explosive Operations Nuclear Material Operations HE Operations Strategies Advance HE Center of Excellence Exemplify a High Reliability Organization Health & Safety Safety Training Occupational Medicine Contractor Safety Environment Environmental Projects & Operations Regulatory Compliance Waste Operations Environmental Management System Environmental Document Library Public Meetings Doing Business With Pantex Procurement How We Buy Subcontracting Opportunities Supplier Information Profile Suspect/Counterfiet Items Business Definitions Documents and Forms Accounts Payable Work for Others Our Capabilities How to do Business with the Pantex eXMC Employee Information Benefits

475

ARM - Site Instruments  

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

Darwin SiteInstruments Darwin SiteInstruments TWP Related Links Facilities and Instruments Manus Island Nauru Island Darwin, AUS ES&H Guidance Statement Operations Science Field Campaigns Year of Tropical Convection Visiting the Site TWP Fact Sheet Images Information for Guest Scientists Contacts Instruments : Central Facility, Darwin, Australia [ Single installation ] AERI Atmospheric Emitted Radiance Interferometer Radiometric Browse Plots Browse Data [ Single installation ] CSPHOT Cimel Sunphotometer Aerosols, Radiometric Browse Data [ Single installation ] DISDROMETER Impact Disdrometer Surface Meteorology Browse Plots Browse Data [ Single installation ] DL Doppler Lidar Cloud Properties Browse Data [ Single installation ] GNDRAD Ground Radiometers on Stand for Upwelling Radiation Radiometric Browse Plots

476

The DOD Siting Clearinghouse  

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

The DoD Siting Clearinghouse The DoD Siting Clearinghouse Dave Belote Director, Siting Clearinghouse Office of the Secretary of Defense The Nexus of National Security & Renewable Energy * Unintended Consequences - Rapid development of renewable technologies - Rapidly changing military technology research & development * Existing Policy and Processes - Not up to date with changing technologies - Land use decision-making authorities fragmented across all levels of government 2 From Nellis to Shepherds Flat: Congressional Push for Action 3 Congressional Response - FY2011 NDAA, Section 358 * Section 358 "Study Of Effects Of New Construction Of Obstructions On Military Installations And Operations" - Integrated review process - 180-day backlog assessment

477

Princeton Site Ofice  

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

Princeton Site Ofice Princeton Site Ofice P.O. Box 102 Princeton, New Jersey 08542-0102 TO: Gregory H. Woods, General Counsel JA N Z Q= LMN N= SUBJECT: PRINCETON SITE OFFICE (PSO) 2013 ANNUAL NATIONAL ENVIRONMENTAL POLICY ACT (NEPA) PLANNING SUMMARY Section 5(a)(7) of DOE Order 451.1B Change 3, NEPA Compliance Program, requires each Secretarial Oficer and Head of Field Organization to submit an Annual NEPA Planning Summary to the General Coun. s el. We have reviewed

478

Site Lead TQP Standard  

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

Qualification Standard for the Qualification Standard for the Office of Safety and Emergency Management Evaluations Site Lead Program May 2011 Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy 1 Qualification Standard for the Office of Safety and Emergency Management Evaluations Site Lead Program A Site Lead is an individual, normally at a senior General Schedule (GS) level or Excepted Service, who is assigned the responsibility to assess and evaluate management systems, safety and health programs, and technical activities associated with U.S. Department of Energy (DOE) nuclear and non-nuclear facilities. Typically, a Site Lead has previously qualified as a Nuclear Safety Specialist or a Senior Technical Safety Manager. For exceptionally qualified individuals,

479

Savannah River Site - Reports  

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

Reports Reports Savannah River Site Review Reports 2013 Independent Oversight Review of the Savannah River Field Office Tritium Facilities Radiological Controls Activity-Level Implementation, November 2013 Independent Oversight Review of the Savannah River Site Salt Waste Processing Facility Safety Basis and Design Development, August 2013 Independent Oversight Review of the Employee Concerns Program at the Savannah River Operations Office, July 2013 Assessment of Nuclear Safety Culture at the Salt Waste Processing Facility Project, January 2013 Review of the Savannah River Site, Waste Solidification Building, Construction Quality of Mechanical Systems Installation and Selected Aspects of Fire Protection System Design, January 2013 Activity Reports 2013 Savannah River Site Waste Solidification Building Corrective Actions from the January 2013 Report on Construction Quality of Mechanical Systems Installation and Fire Protection Design, May 2013

480

ARM - TWP Nauru Site  

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

Nauru Site Nauru Site TWP Related Links Facilities and Instruments Manus Island Nauru Island Darwin, AUS ES&H Guidance Statement Operations Science Field Campaigns Year of Tropical Convection Visiting the Site TWP Fact Sheet Images Information for Guest Scientists Contacts TWP Nauru Site Location: 0° 31' 15.6" S, 166° 54' 57.60" E Altitude: 7.1 meters The Nauru facility was established in November 1998 as the second TWP climate research station. It is situated in the Denigomodu district on Nauru Island, the Republic of Nauru, which is located in the western South Pacific, approximately 1,200 miles northeast of Papua New Guinea. The ARM Program selected this location because it is on the eastern edge of the Pacific warm pool under La Niña conditions, which affect weather patterns

Note: This page contains sample records for the topic "tower site tapajos" 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

TWP Darwin Site  

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

Darwin Site Darwin Site TWP Related Links Facilities and Instruments Manus Island Nauru Island Darwin, AUS ES&H Guidance Statement Operations Science Field Campaigns Year of Tropical Convection Visiting the Site TWP Fact Sheet Images Information for Guest Scientists Contacts TWP Darwin Site Location: 12° 25' 28.56" S, 130° 53' 29.75" E Altitude: 29.9 meters The third TWP climate research facility was established in April 2002 in Darwin, Northern Territory, Australia. The facility is situated adjacent to the Australian Bureau of Meteorology's (BOM) Meteorological Office near Darwin International Airport. Darwin was chosen because it meets the scientific goal of the ARM Program, providing a unique set of climate regimes that are not seen at the other TWP facilities. Annually, Darwin

482

TWP Nauru Site  

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

Nauru Site Nauru Site TWP Related Links Facilities and Instruments Manus Island Nauru Island Darwin, AUS ES&H Guidance Statement Operations Science Field Campaigns Year of Tropical Convection Visiting the Site TWP Fact Sheet Images Information for Guest Scientists Contacts TWP Nauru Site Location: 0° 31' 15.6" S, 166° 54' 57.60" E Altitude: 7.1 meters The Nauru facility was established in November 1998 as the second TWP climate research station. It is situated in the Denigomodu district on Nauru Island, the Republic of Nauru, which is located in the western South Pacific, approximately 1,200 miles northeast of Papua New Guinea. The ARM Program selected this location because it is on the eastern edge of the Pacific warm pool under La Niña conditions, which affect weather patterns

483

Maryland Web Site Report  

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

Website M a r y l a n d Web site Introduction The University Of Maryland 2005 Solar Decathlon Team has created a website to inform the public about solar living, establish an...

484

Moss Web Sites  

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

Moss Web Sites Name: Barbara Location: NA Country: NA Date: NA Question: I would like some on-line information about using various mosses in gardens - or pointers to other...

485

Dzhanybek Site Image #1  

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

DZH-1: Termite mound at the Dzhanybek grassland site, Kazakhstan. (Prof. Roman Zlotin is demonstrating the internal structure of the mound, which has been cut open with a shovel....

486

EERE: Web Site Policies  

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

Energy (EERE) has developed this page to detail its compliance with the Office of Management and Budget Policies for Federal Public Web Sites. To learn more about EERE, visit...

487

Nylsvley Site Image #1  

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

Image NLS-1: Typical view of fine-leaved savanna at the Nylsvley study site, South Africa. (Dominant trees are Acacia tortilis. Photograph taken 1997 by Dr. R.J. Scholes, CSIR,...

488

EERE: Web Site Policies  

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

Web Site Policies The Office of Energy Efficiency and Renewable Energy (EERE) has developed this page to detail its compliance with the Office of Management and Budget Policies for...

489

Kade Site Image #1  

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

growth at the Kade tropical forest site, Ghana. (typically, the area would now be ready for burning and planting. Photograph taken 1958 by Dr. P.H. Nye, Beckley, Oxon., UK...

490

Site Energy Reduction Program  

E-Print Network (OSTI)

DuPonts Sabine River Works site is the largest energy consuming location within DuPont. In the year 2000, each production area was encouraged to reduce energy costs. By 2003 site energy consumption was down 16% on an absolute basis and 12% on a BTU/LB basis. By 2004, overall progress had slowed, energy consumption increased slightly, and area results were mixed. It was time to shake things up with a new perspective. A coordinated site energy program was launched. In 2005, the first full year of the unified program, the site saved $6.9 MM from energy reduction projects. The rate of improvement is accelerating in 2006 with $3.6 MM in energy projects being implemented in the first four months.

Jagen, P. R.

2007-01-01T23:59:59.000Z

491

Matador Site Image #1  

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

MTD-1: Field work in progress at the Matador grassland site, Saskatchewan, Canada. (The sample plots were located between 1.0 and 2.4 km from this point, on flat topography....

492

ParaSITE  

E-Print Network (OSTI)

paraSITE proposes the appropriation of exterior ventilation systems on existing architecture to inflate pneumatic shelters that are designed for homeless people. This project involves the production of a series of inflatable ...

Rakowitz, Michael

1998-01-01T23:59:59.000Z

493

Life Cycle Environmental Impacts Resulting from the Manufacture of the Heliostat Field for a Reference Power Tower Design in the United States: Preprint  

SciTech Connect

Life cycle assessment (LCA) is recognized as a useful analytical approach for quantifying environmental impacts of renewable energy technologies, including concentrating solar power (CSP). An LCA accounts for impacts from all stages in the development, operation, and decommissioning of a CSP plant, including such upstream stages as the extraction of raw materials used in system components, manufacturing of those components, and construction of the plant. The National Renewable Energy Laboratory is conducting a series of LCA studies for various CSP technologies. This paper contributes to a thorough LCA of a 100 MWnet molten salt power tower CSP plant by estimating the environmental impacts resulting from the manufacture of heliostats. Three life cycle metrics are evaluated: greenhouse gas emissions, water consumption, and cumulative energy demand. The heliostat under consideration (the 148 m2 Advanced Thermal Systems heliostat) emits 5,300 kg CO2eq, consumes 274 m3 of water, and requires 159,000 MJeq during its manufacture. Future work will incorporate the results from this study into the LCA model used to estimate the life cycle impacts of the entire 100 MWnet power tower CSP plant.

Heath, G.; Burkhardt, J.; Turchi, C.

2012-10-01T23:59:59.000Z

494

Acoustic Imaging Evaluation of Juvenile Salmonid Behavior in the Immediate Forebay of the Water Temperature Control Tower at Cougar Dam, 2010  

SciTech Connect

This report presents the results of an evaluation of juvenile Chinook salmon (Oncorhynchus tshawytscha) behavior at Cougar Dam on the south fork of the McKenzie River in Oregon in 2010. The study was conducted by the Pacific Northwest National Laboratory for the U.S. Army Corps of Engineers (USACE). The overall goal of the study was to characterize juvenile salmonid behavior and movement patterns in the immediate forebay of the Water Temperature Control (WTC) tower of the dam for USACE and fisheries resource managers use in making decisions about bioengineering designs for long-term structures and/or operations to facilitate safe downstream passage for juvenile salmonids. We collected acoustic imaging (Dual-Frequency Identification Sonar; DIDSON) data from March 1, 2010, through January 31, 2011. Juvenile salmonids (hereafter, called 'fish') were present in the immediate forebay of the WTC tower throughout the study. Fish abundance index was low in early spring (<200 fish per sample-day), increased in late April, and peaked on May 19 (6,039 fish). A second peak was observed on June 6 (2904 fish). Fish abundance index decreased in early June and remained low in