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Sample records for hot springs compressor

  1. Multiple volume compressor for hot gas engine

    DOE Patents [OSTI]

    Stotts, Robert E. (Clifton Park, NY)

    1986-01-01

    A multiple volume compressor for use in a hot gas (Stirling) engine having a plurality of different volume chambers arranged to pump down the engine when decreased power is called for and return the working gas to a storage tank or reservoir. A valve actuated bypass loop is placed over each chamber which can be opened to return gas discharged from the chamber back to the inlet thereto. By selectively actuating the bypass valves, a number of different compressor capacities can be attained without changing compressor speed whereby the capacity of the compressor can be matched to the power available from the engine which is used to drive the compressor.

  2. Hot Springs | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource History View NewGuam: Energyarea,Magazine Jump to:II Wind FarmHorstHotHotSprings

  3. Paleomagnetic Measurements At Roosevelt Hot Springs Geothermal...

    Open Energy Info (EERE)

    Hot Springs Geothermal Area. Notes Paleomagnetic dating performed by Brown (1977) on opal samples in order to date the age of the hydrothermal system. The results were highly...

  4. Astoria Mineral Hot Springs Pool & Spa Low Temperature Geothermal...

    Open Energy Info (EERE)

    Astoria Mineral Hot Springs Pool & Spa Low Temperature Geothermal Facility Jump to: navigation, search Name Astoria Mineral Hot Springs Pool & Spa Low Temperature Geothermal...

  5. Paraiso Hot Springs Resort Pool & Spa Low Temperature Geothermal...

    Open Energy Info (EERE)

    Paraiso Hot Springs Resort Pool & Spa Low Temperature Geothermal Facility Jump to: navigation, search Name Paraiso Hot Springs Resort Pool & Spa Low Temperature Geothermal Facility...

  6. Caliente Hot Springs Motel Pool & Spa Low Temperature Geothermal...

    Open Energy Info (EERE)

    Hot Springs Motel Pool & Spa Low Temperature Geothermal Facility Jump to: navigation, search Name Caliente Hot Springs Motel Pool & Spa Low Temperature Geothermal Facility Facility...

  7. Democrat Hot Springs Resort Pool & Spa Low Temperature Geothermal...

    Open Energy Info (EERE)

    Democrat Hot Springs Resort Pool & Spa Low Temperature Geothermal Facility Jump to: navigation, search Name Democrat Hot Springs Resort Pool & Spa Low Temperature Geothermal...

  8. Camp Preventorium Hot Springs Pool & Spa Low Temperature Geothermal...

    Open Energy Info (EERE)

    Preventorium Hot Springs Pool & Spa Low Temperature Geothermal Facility Jump to: navigation, search Name Camp Preventorium Hot Springs Pool & Spa Low Temperature Geothermal...

  9. Ringboldt Rapids Hot Springs Pool & Spa Low Temperature Geothermal...

    Open Energy Info (EERE)

    Ringboldt Rapids Hot Springs Pool & Spa Low Temperature Geothermal Facility Jump to: navigation, search Name Ringboldt Rapids Hot Springs Pool & Spa Low Temperature Geothermal...

  10. Sycamore Hot Spring Resort Pool & Spa Low Temperature Geothermal...

    Open Energy Info (EERE)

    Sycamore Hot Spring Resort Pool & Spa Low Temperature Geothermal Facility Jump to: navigation, search Name Sycamore Hot Spring Resort Pool & Spa Low Temperature Geothermal Facility...

  11. Thermal Gradient Holes At Waunita Hot Springs Geothermal Area...

    Open Energy Info (EERE)

    regional heat flux around the hot springs and potentially identify the location of the geothermal reservoir feeding the hot springs Notes Eight thermal gradient boreholes were...

  12. Chena Hot Springs Resort - Electric Power Generation Using Geothermal...

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

    Hot Springs Resort - Electric Power Generation Using Geothermal Fluid Coproduced from Oil andor Gas Wells Chena Hot Springs Resort - Electric Power Generation Using Geothermal...

  13. Blue Mountain Hot Spring Guest Ranch Pool & Spa Low Temperature...

    Open Energy Info (EERE)

    Blue Mountain Hot Spring Guest Ranch Pool & Spa Low Temperature Geothermal Facility Jump to: navigation, search Name Blue Mountain Hot Spring Guest Ranch Pool & Spa Low Temperature...

  14. Abraham Hot Springs Geothermal Area Northern Basin and Range...

    Open Energy Info (EERE)

    Basin and Range Geothermal Region Medical Hot Springs Geothermal Area Idaho Batholith Medicine Lake Geothermal Area Cascades Melozi Hot Springs Geothermal Area Alaska Geothermal...

  15. Jacumba Hot Springs Health Spa Pool & Spa Low Temperature Geothermal...

    Open Energy Info (EERE)

    Jacumba Hot Springs Health Spa Pool & Spa Low Temperature Geothermal Facility Jump to: navigation, search Name Jacumba Hot Springs Health Spa Pool & Spa Low Temperature Geothermal...

  16. Gas Spring Losses in Linear Clearance Seal Compressors P.B. Bailey, M.W. Dadd, J.S. Reed*

    E-Print Network [OSTI]

    1 Gas Spring Losses in Linear Clearance Seal Compressors P.B. Bailey, M.W. Dadd, J.S. Reed* , C, and the simplest demonstration of this can be observed in a gas spring. Our understanding of these gas spring with a clearance seal linear compressor attached to a plain gas spring volume. The static flow through

  17. Variable gas spring for matching power output from FPSE to load of refrigerant compressor

    DOE Patents [OSTI]

    Chen, Gong (Athens, OH); Beale, William T. (Athens, OH)

    1990-01-01

    The power output of a free piston Stirling engine is matched to a gas compressor which it drives and its stroke amplitude is made relatively constant as a function of power by connecting a gas spring to the drive linkage from the engine to the compressor. The gas spring is connected to the compressor through a passageway in which a valve is interposed. The valve is linked to the drive linkage so it is opened when the stroke amplitude exceeds a selected limit. This allows compressed gas to enter the spring, increase its spring constant, thus opposing stroke increase and reducing the phase lead of the displacer ahead of the piston to reduce power output and match it to a reduced load power demand.

  18. Variable gas spring for matching power output from FPSE to load of refrigerant compressor

    DOE Patents [OSTI]

    Chen, G.; Beale, W.T.

    1990-04-03

    The power output of a free piston Stirling engine is matched to a gas compressor which it drives and its stroke amplitude is made relatively constant as a function of power by connecting a gas spring to the drive linkage from the engine to the compressor. The gas spring is connected to the compressor through a passageway in which a valve is interposed. The valve is linked to the drive linkage so it is opened when the stroke amplitude exceeds a selected limit. This allows compressed gas to enter the spring, increase its spring constant, thus opposing stroke increase and reducing the phase lead of the displacer ahead of the piston to reduce power output and match it to a reduced load power demand. 6 figs.

  19. Hot Springs Point Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    Point Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Hot Springs Point Geothermal Project Project Location Information...

  20. Detachment Faulting & Geothermal Resources- Pearl Hot Spring, NV

    Broader source: Energy.gov [DOE]

    Detachment Faulting & Geothermal Resources - Pearl Hot Spring, NV presentation at the April 2013 peer review meeting held in Denver, Colorado.

  1. Hot Springs Metropolitan Planning Organization 2030 Long Range Transportation Planá

    E-Print Network [OSTI]

    Hot Springs Metropolitan Planning Organization

    2005-11-03

    of Mountain Pine Hot Springs Village The Greater Hot Springs Chamber of Commerce The Arkansas State Highway and Transportation Department In Cooperation With United States Department of Transportation Federal Highway Administration Federal Transit... Administration 2030 Long Range Transportation Plan for the Hot Springs Area Metropolitan Planning Organization This LRTP has been funded with federal Metropolitan Planning (PL) funds through the Federal Highway Administration, Section 5303 funds...

  2. Ground Gravity Survey At Roosevelt Hot Springs Geothermal Area...

    Open Energy Info (EERE)

    Ground Gravity Survey At Roosevelt Hot Springs Geothermal Area (Faulder, 1991) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity...

  3. Ground Gravity Survey At Neal Hot Springs Geothermal Area (Colwell...

    Open Energy Info (EERE)

    Ground Gravity Survey At Neal Hot Springs Geothermal Area (Colwell, Et Al., 2012) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity...

  4. Ground Gravity Survey At Lake City Hot Springs Area (Warpinski...

    Open Energy Info (EERE)

    Ground Gravity Survey At Lake City Hot Springs Area (Warpinski, Et Al., 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity...

  5. Ground Gravity Survey At Neal Hot Springs Geothermal Area (U...

    Open Energy Info (EERE)

    Ground Gravity Survey At Neal Hot Springs Geothermal Area (U.S. Geothermal Inc., 2007) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground...

  6. Thermal Gradient Holes At Breitenbush Hot Springs Area (Ingebritsen...

    Open Energy Info (EERE)

    Thermal Gradient Holes At Breitenbush Hot Springs Area (Ingebritsen, Et Al., 1993) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Thermal...

  7. Thermal Gradient Holes At Neal Hot Springs Geothermal Area (U...

    Open Energy Info (EERE)

    Thermal Gradient Holes At Neal Hot Springs Geothermal Area (U.S. Geothermal Inc., 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Thermal...

  8. Water Sampling At Mt Princeton Hot Springs Geothermal Area (Olson...

    Open Energy Info (EERE)

    Water Sampling At Mt Princeton Hot Springs Geothermal Area (Olson & Dellechaie, 1976) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Water...

  9. Geothermal Literature Review At Roosevelt Hot Springs Geothermal...

    Open Energy Info (EERE)

    Geothermal Literature Review At Roosevelt Hot Springs Geothermal Area (Faulder, 1991) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal...

  10. Geothermal Literature Review At Roosevelt Hot Springs Geothermal...

    Open Energy Info (EERE)

    Geothermal Literature Review At Roosevelt Hot Springs Geothermal Area (Petersen, 1975) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal...

  11. Micro-Earthquake At Roosevelt Hot Springs Geothermal Area (Zandt...

    Open Energy Info (EERE)

    Micro-Earthquake At Roosevelt Hot Springs Geothermal Area (Zandt, Et Al., 1982) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Micro-Earthquake...

  12. Camperworld Hot Springs SCUBA Dive Pool Pool & Spa Low Temperature...

    Open Energy Info (EERE)

    SCUBA Dive Pool Pool & Spa Low Temperature Geothermal Facility Jump to: navigation, search Name Camperworld Hot Springs SCUBA Dive Pool Pool & Spa Low Temperature Geothermal...

  13. Ground Magnetics At Neal Hot Springs Geothermal Area (Colwell...

    Open Energy Info (EERE)

    Area (Colwell, Et Al., 2012) Exploration Activity Details Location Neal Hot Springs Geothermal Area Exploration Technique Ground Magnetics Activity Date 2011 - 2011...

  14. Compound and Elemental Analysis At Buffalo Valley Hot Springs...

    Open Energy Info (EERE)

    Laney, 2005) Exploration Activity Details Location Buffalo Valley Hot Springs Area Exploration Technique Compound and Elemental Analysis Activity Date Usefulness not indicated...

  15. Refraction Survey At Mt Princeton Hot Springs Geothermal Area...

    Open Energy Info (EERE)

    Refraction Survey At Mt Princeton Hot Springs Geothermal Area (Lamb, Et Al., 2012) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Refraction...

  16. Geologic Setting of the Central Alaskan Hot Springs Belt: Implications...

    Open Energy Info (EERE)

    the Central Alaskan Hot Springs Belt: Implications for Geothermal Resource Capacity and Sustainable Energy Production Jump to: navigation, search OpenEI Reference LibraryAdd to...

  17. Idaho Public Utilities Commission Approves Neal Hot Springs Power...

    Open Energy Info (EERE)

    Idaho Public Utilities Commission Approves Neal Hot Springs Power Purchase Agreement Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Idaho Public...

  18. Compound and Elemental Analysis At Lake City Hot Springs Area...

    Open Energy Info (EERE)

    Sladek, Et Al., 2004) Exploration Activity Details Location Lake City Hot Springs Area Exploration Technique Compound and Elemental Analysis Activity Date Usefulness useful...

  19. Data Acquisition-Manipulation At Lake City Hot Springs Area ...

    Open Energy Info (EERE)

    Data Acquisition-Manipulation At Lake City Hot Springs Area (Warpinski, Et Al., 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Data...

  20. Soil Sampling At Waunita Hot Springs Geothermal Area (Ringrose...

    Open Energy Info (EERE)

    Soil Sampling At Waunita Hot Springs Geothermal Area (Ringrose & Pearl, 1981) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Soil Sampling At...

  1. Analysis Of Hot Springs And Associated Deposits In Yellowstone...

    Open Energy Info (EERE)

    analysis, and VNIR spectroscopy. Samples of hot spring deposits, geyser deposits, and soil were also collected. Analysis of ASTER data provided broad scale characteristics of the...

  2. Geothermal Literature Review At Breitenbush Hot Springs Area...

    Open Energy Info (EERE)

    Geothermal Literature Review At Breitenbush Hot Springs Area (Ingebritsen, Et Al., 1996) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  3. Geothermal Literature Review At Lake City Hot Springs Area (Benoit...

    Open Energy Info (EERE)

    Geothermal Literature Review At Lake City Hot Springs Area (Benoit, Et Al., 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermal...

  4. Hydrogeologic investigation of Coso Hot Springs, Inyo County...

    Open Energy Info (EERE)

    for chemical analysis; determination of the local Coso Hot Springs and regional groundwater hydrology, including consideration of recharge, discharge, movement, and water...

  5. Direct-Current Resistivity Survey At Beowawe Hot Springs Area...

    Open Energy Info (EERE)

    Direct-Current Resistivity Survey At Beowawe Hot Springs Area (Garg, Et Al., 2007) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Direct-Current...

  6. Direct-Current Resistivity At Beowawe Hot Springs Area (Garg...

    Open Energy Info (EERE)

    Direct-Current Resistivity At Beowawe Hot Springs Area (Garg, Et Al., 2007) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Direct-Current...

  7. Direct-Current Resistivity Survey At Roosevelt Hot Springs Area...

    Open Energy Info (EERE)

    Direct-Current Resistivity Survey At Roosevelt Hot Springs Area (Combs 2006) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Direct-Current...

  8. Direct-Current Resistivity Survey At Mt Princeton Hot Springs...

    Open Energy Info (EERE)

    Direct-Current Resistivity Survey At Mt Princeton Hot Springs Area (Richards, Et Al., 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity:...

  9. Geothermometry At Mt Princeton Hot Springs Geothermal Area (Pearl...

    Open Energy Info (EERE)

    Et Al., 1976) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geothermometry At Mt Princeton Hot Springs Geothermal Area (Pearl, Et Al., 1976)...

  10. Seismic baseline and induction studies- Roosevelt Hot Springs...

    Open Energy Info (EERE)

    Seismic baseline and induction studies- Roosevelt Hot Springs, Utah and Raft River, Idaho Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Seismic...

  11. Vertical Seismic Profiling At Neal Hot Springs Geothermal Area...

    Open Energy Info (EERE)

    Vertical Seismic Profiling At Neal Hot Springs Geothermal Area (Colorado School of Mines and Imperial College London, 2011) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal...

  12. Hot Springs-Garrison Fiber Optic Project

    SciTech Connect (OSTI)

    Not Available

    1994-10-01

    Bonneville Power Administration (BPA) is proposing to upgrade its operational telecommunications system between the Hot Springs Substation and the Garrison Substation using a fiber optic system. The project would primarily involve installing 190 kilometers (120 miles) of fiber optic cable on existing transmission structures and installing new fiber optic equipment in BPA`s substation yards and control houses. BPA prepared an environmental assessment (EA) evaluating the proposed action. This EA was published in October 1994. The EA identifies a number of minor impacts that might occur as a result of the proposed action, as well as some recommended mitigation measures. This Mitigation Action Plan (MAP) identifies specific measures to avoid, minimize, or compensate for impacts identified in the EA.

  13. Geothermal Exploration in Hot Springs, Montana

    SciTech Connect (OSTI)

    Toby McIntosh, Jackola Engineering

    2012-09-26

    The project involves drilling deeper in the Camp Aqua well dri lled in June 1982 as part of an effort to develop an ethanol plant. The purpose of the current drill ing effort is to determine if water at or above 165├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬░F exists for the use in low temperature resource power generation. Previous geothermal resource study efforts in and around Hot Springs , MT and the Camp Aqua area (NE of Hot Springs) have been conducted through the years. A confined gravel aquifer exists in deep alluvium overlain by approximately 250├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬ó├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬? of si lt and c lay deposits from Glacial Lake Missoula. This gravel aquifer overlies a deeper bedrock aquifer. In the Camp Aqua area several wel l s exist in the gravel aquifer which receives hot water f rom bedrock fractures beneath the area. Prior to this exploration, one known well in the Camp Aqua area penetrated into the bedrock without success in intersecting fractures transporting hot geothermal water. The exploration associated with this project adds to the physical knowledge database of the Camp Aqua area. The dri l l ing effort provides additional subsurface information that can be used to gain a better understanding of the bedrock formation that i s leaking hot geothermal water into an otherwise cold water aquifer. The exi s t ing well used for the explorat ion is located within the ├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬ó├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?center├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬ó├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬Ł of the hottest water within the gravel aquifer. This lent i t sel f as a logical and economical location to continue the exploration within the existing well. Faced with budget constraints due to unanticipated costs, changing dril l ing techniques stretched the limited project resources to maximize the overa l l well depth which f e l l short of original project goals. The project goal of finding 165├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬?├?┬░F or hotter water was not achieved; however the project provides additional information and understanding of the Camp Aqua area that could prove valuable in future exploration efforts

  14. Geology and Geothermal Potential of the Roosevelt Hot Springs...

    Open Energy Info (EERE)

    Geology and Geothermal Potential of the Roosevelt Hot Springs Area, Beaver County, Utah Jump to: navigation, search OpenEI Reference LibraryAdd to library Thesis: Geology and...

  15. Chemical and Isotopic Composition of Casa Diablo Hot Spring:...

    Open Energy Info (EERE)

    Chemical and Isotopic Composition of Casa Diablo Hot Spring: Magmatic CO2 near Mammoth Lakes, CA Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference...

  16. Kelley Hot Spring Geothermal Project: Kelly Hot Spring Agricultural Center conceptual design

    SciTech Connect (OSTI)

    Longyear, A.B. (ed.)

    1980-06-01

    The proposed core activity in the Kelly Hot Spring Agricultural Center is a nominal 1200 sow swine raising complex. The swine raising is to be a totally confined operation for producing premium pork in controlled environment facilities that utilize geothermal energy. The complex will include a feedmill for producing the various feed formulae required for the animals from breeding through gestation, farrowing, nursery, growing and finishing. The market animals are shipped live by truck to slaughter in Modesto, California. A complete waste management facility will include manure collection from all raising areas, transport via a water flush sysem to methane (biogas) generators, manure separation, settling ponds and disposition of the surplus agricultural quality water. The design is based upon the best commercial practices in confined swine raising in the US today. The most unique feature of the facility is the utilization of geothermal hot water for space heating and process energy throughout the complex.

  17. Kelly Hot Spring Geothermal Project: Kelly Hot Spring Agricultural Center preliminary design. Final technical report

    SciTech Connect (OSTI)

    Longyear, A.B. (ed.)

    1980-08-01

    A Phase 1 Preliminary Design, Construction Planning and Economic Analysis has been conducted for the Kelly Hot Spring Agricultural Center in Modoc County, California. The core activity is a 1360 breeding sow, swine raising complex that utilizes direct heat energy from the Kelly Hot Spring geothermal resource. The swine is to be a totally confined operation for producing premium pork in controlled-environment facilities. The complex contains a feed mill, swine raising buildings and a complete waste management facility that produces methane gas to be delivered to a utility company for the production of electricity. The complex produces 6.7 million pounds of live pork (29,353 animals) shipped to slaughter per year; 105,000 cu. ft. of scrubbed methane per day; and fertilizer. Total effluent is less than 200 gpm of agricultural quality-water with full odor control. The methane production rate made possible with geothermal direct heat is equivalent to at least 400 kw continuous. Sale of the methane on a co-generation basis is being discussed with the utility company. The use of geothermal direct heat energy in the complex displaces nearly 350,000 gallons of fuel oil per year. Generation of the biogas displaces an additional 300,000 gallons of fuel oil per year.

  18. A Test for Airborne Dispersal of Thermophilic Bacteria from Hot Springs

    E-Print Network [OSTI]

    Fouke, Bruce W.

    colonization Mammoth Hot Springs thermophile 2 GEOTHERMAL BIOLOGY AND GEOCHEMISTRY IN YELLOWSTONE NATIONAL PARK Hot Springs complex of Yellowstone National Park. The trapped steam was analyzed for the presence exist between hot springs in close proximity to each other, even springs within a particular geothermal

  19. EA-1676: U.S. Geothermal's Neal Hot Springs Geothermal Facility...

    Office of Environmental Management (EM)

    76: U.S. Geothermal's Neal Hot Springs Geothermal Facility in Vale, OR EA-1676: U.S. Geothermal's Neal Hot Springs Geothermal Facility in Vale, OR December 1, 2009 EA-1676: Final...

  20. Hot Springs Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource History View NewGuam: Energyarea,Magazine Jump to:II Wind FarmHorstHotHot

  1. Environmental assessment for Kelley Hot Spring geothermal project: Kelley Hot Spring Agricultural Center

    SciTech Connect (OSTI)

    Neilson, J.A.

    1981-04-01

    The environmental impacts of an integrated swine production unit are analyzed together with necessary ancillary operations deriving its primary energy from a known geothermal reservoir in accordance with policies established by the National Energy Conservation Act. This environmental assessment covers 6 areas designated as potentially feasible project sites, using as the basic criteria for selection ground, surface and geothermal water supplies. The six areas, comprising +- 150 acres each, are within a 2 mile radius of Kelley Hot Springs, a known geothermal resource of many centuries standing, located 16 miles west of Alturas, the county seat of Modoc County, California. The project consists of the construction and operation of a 1360 sow confined pork production complex expandable to 5440 sows. The farrow to finish system for 1360 sows consists of 2 breeding barns, 2 gestation barns, 1 farrowing and 1 nursery barn, 3 growing and 3 finishing barns, a feed mill, a methane generator for waste disposal and water storage ponds. Supporting this are one geothermal well and 1 or 2 cold water wells, all occupying approximately 12 acres. Environmental reconnaissance involving geology, hydrology, soils, vegetation, fauna, air and water quality, socioeconomic, archaelogical and historical, and land use aspects were carefully carried out, impacts assessed and mitigations evaluated.

  2. Hot Springs Ranch Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource History View NewGuam: Energyarea,Magazine Jump to:II Wind FarmHorstHotHot Springs

  3. 3D Model of the Neal Hot Springs Geothermal Area

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Faulds, James E.

    The Neal Hot Springs geothermal system lies in a left-step in a north-striking, west-dipping normal fault system, consisting of the Neal Fault to the south and the Sugarloaf Butte Fault to the north (Edwards, 2013). The Neal Hot Springs 3D geologic model consists of 104 faults and 13 stratigraphic units. The stratigraphy is sub-horizontal to dipping <10 degrees and there is no predominant dip-direction. Geothermal production is exclusively from the Neal Fault south of, and within the step-over, while geothermal injection is into both the Neal Fault to the south of the step-over and faults within the step-over.

  4. A biophysical model of prokaryotic diversity in geothermal hot springs

    E-Print Network [OSTI]

    Klales, Anna; Nett, Elizabeth Janus; Kane, Suzanne Amador

    2008-01-01

    Recent field investigations of photosynthetic bacteria living in geothermal hot spring environments have revealed surprisingly complex ecosystems, with an unexpected level of genetic diversity. One case of particular interest involves the distribution along hot spring thermal gradients of genetically distinct bacterial strains that differ in their preferred temperatures for reproduction and photosynthesis. In such systems, a single variable, temperature, defines the relevant environmental variation. In spite of this, each region along the thermal gradient exhibits multiple strains of photosynthetic bacteria adapted to several distinct thermal optima, rather than the expected single thermal strain adapted to the local environmental temperature. Here we analyze microbiology data from several ecological studies to show that the thermal distribution field data exhibit several universal features independent of location and specific bacterial strain. These include the distribution of optimal temperatures of differe...

  5. 3D Model of the Neal Hot Springs Geothermal Area

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Faulds, James E.

    2013-12-31

    The Neal Hot Springs geothermal system lies in a left-step in a north-striking, west-dipping normal fault system, consisting of the Neal Fault to the south and the Sugarloaf Butte Fault to the north (Edwards, 2013). The Neal Hot Springs 3D geologic model consists of 104 faults and 13 stratigraphic units. The stratigraphy is sub-horizontal to dipping <10 degrees and there is no predominant dip-direction. Geothermal production is exclusively from the Neal Fault south of, and within the step-over, while geothermal injection is into both the Neal Fault to the south of the step-over and faults within the step-over.

  6. Dynamics of precipitation pattern formation at geothermal hot springs

    E-Print Network [OSTI]

    Nigel Goldenfeld; Pak Yuen Chan; John Veysey

    2006-05-26

    We formulate and model the dynamics of spatial patterns arising during the precipitation of calcium carbonate from a supersaturated shallow water flow. The model describes the formation of travertine deposits at geothermal hot springs and rimstone dams of calcite in caves. We find explicit solutions for travertine domes at low flow rates, identify the linear instabilities which generate dam and pond formation on sloped substrates, and present simulations of statistical landscape evolution.

  7. Pilgrim Hot Springs Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History ViewMayo, Maryland:NPIProtectio1975) | Open EnergyPhoenicia,Creek,Pilgrim Hot Springs Geothermal

  8. Pilgrim Hot Springs, Alaska Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History ViewMayo, Maryland:NPIProtectio1975) | Open EnergyPhoenicia,Creek,Pilgrim Hot Springs

  9. Petrography Analysis At Roosevelt Hot Springs Geothermal Area (Petersen,

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History ViewMayo, Maryland:NPIProtectio1975) | Open Energy Information Roosevelt Hot Springs Geothermal

  10. Geothermal Geodatabase for Routt Hot Springs, Routt County, Colorado

    SciTech Connect (OSTI)

    Zehner, Richard

    2012-11-01

    Geothermal Geodatabase for Routt Hot Springs, Routt County, Colorado By Richard ôRickö Zehner Geothermal Development Associates Reno Nevada USA 775.737.7806 rzehner@gdareno.com For Flint Geothermal LLC, Denver Colorado Part of DOE Grant EE0002828 2013 This is an ESRI geodatabase version 10, together with an ESRI MXD file version 10.2 Data is in UTM Zone 13 NAD27 projection North boundary: approximately 4,500,000 South boundary: approximately 4,480,000 West boundary: approximately 330,000 East boundary: approximately 358,000 This geodatabase was built to cover several geothermal targets developed by Flint Geothermal in 2012 during a search for high-temperature systems that could be exploited for electric power development. Several of the thermal springs and wells in the Routt Hot Spring and Steamboat Springs areahave geochemistry and geothermometry values indicative of high-temperature systems. The datasets in the geodatabase are a mixture of public domain data as well as data collected by Flint Geothermal, now being made public. It is assumed that the user has internet access, for the mxd file accesses ESRIĺs GIS servers. Datasets include: 1. Results of reconnaissance shallow (2 meter) temperature surveys 2. Air photo lineaments 3. Groundwater geochemistry 5. Georeferenced geologic map of Routt County 6. Various 1:24,000 scale topographic maps

  11. Pattern of shallow ground water flow at Mount Princeton Hot Springs...

    Open Energy Info (EERE)

    Pattern of shallow ground water flow at Mount Princeton Hot Springs, Colorado, using geoelectrical methods Jump to: navigation, search OpenEI Reference LibraryAdd to library...

  12. Pattern Of Shallow Ground Water Flow At Mount Princeton Hot Springs...

    Open Energy Info (EERE)

    and Geothermal Research. () . Related Geothermal Exploration Activities Activities (1) Direct-Current Resistivity Survey At Mt Princeton Hot Springs Area (Richards, Et Al.,...

  13. Waunita Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt Al.,Turin,VillageWarrensource HistoryOregon:WattQuizWaunita Hot Springs

  14. Wayland Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt Al.,Turin,VillageWarrensourceCentre Jump to:Wayland Hot Springs Geothermal

  15. Zim's Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEtGeorgia:Illinois:WizardYates County,Zena, NewZhulu HuadaZim's Hot Springs

  16. Vale Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt Al.,Turin, New York:PowerNewPumatyUvalde County,Vade SolarVale Hot Springs

  17. Fisher Hot Spring Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View New PagesSustainable Urban Transport Jump to: navigation,FirstGeoTherm GmbHFisher Hot Spring

  18. Mickey Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History ViewMayo, Maryland: Energy ResourcesDec 2005 WindPRO isMickey Hot Springs Geothermal Area

  19. Pinto Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History ViewMayo, Maryland:NPIProtectio1975) | OpenBethlehem Biomass FacilityPinto Hot Springs Geothermal

  20. Mt Princeton Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

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  1. Poncha Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

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  2. Radium Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

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  3. Reed River Hot Spring Geothermal Area | Open Energy Information

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  4. Alvord Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EAand DaltonSolarOpen5All HomeAlphakatResourcesAlvord Hot Springs Geothermal

  5. Crane Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTIONRobertsdale, Alabama (Utility Company)|Alabama: Energy ResourcesVirginia: EnergyCrane Hot Springs

  6. Indian Valley Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource History View NewGuam:on Openei |source Historypub [ICO]Indian Valley Hot Springs

  7. Macfarlane's Hot Spring Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource HistoryScenarios Towards 2050Enermar <OMISPowerTurbineMacfarlane's Hot Spring

  8. Mickey Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

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  9. Alvord Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop IncIowaWisconsin: EnergyYork Jump to: navigation,Open EnergyAlvord Hot Springs

  10. Bradfield Canal Hot Spring Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop IncIowaWisconsin:Pontiac BiomassInformationSystemsBradfield Canal Hot Spring

  11. Pilger Estates Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsourceII JumpQuarterly SmartDB-2, Blue Mountain GeothermalPilger Estates Hot Springs

  12. Geothermal Geodatabase for Wagon Wheel Hot Springs, Mineral County, Colorado

    SciTech Connect (OSTI)

    Zehner, Richard

    2012-11-01

    Geothermal Geodatabase for Wagon Wheel Hot Springs, Mineral County, Colorado By Richard ôRickö Zehner Geothermal Development Associates Reno Nevada USA 775.737.7806 rzehner@gdareno.com For Flint Geothermal LLC, Denver Colorado Part of DOE Grant EE0002828 2013 This is an ESRI geodatabase version 10, together with an ESRI MXD file version 10.2 Data is in UTM Zone 13 NAD27 projection North boundary: approximately 4,189,000 South boundary: approximately 4,170,000 West boundary: approximately 330,000 East boundary: approximately 351,000 This geodatabase was built to cover several geothermal targets developed by Flint Geothermal in 2012 during a search for high-temperature systems that could be exploited for electric power development. Several of the thermal springs at Wagon Wheel Gap have geochemistry and geothermometry values indicative of high-temperature systems. The datasets in the geodatabase are a mixture of public domain data as well as data collected by Flint Geothermal, now being made public. It is assumed that the user has internet access, for the mxd file accesses ESRIĺs GIS servers. Datasets include: 1. Results of reconnaissance shallow (2 meter) temperature surveys 2. Air photo lineaments 3. Groundwater geochemistry 4. Power lines 5. Georeferenced geologic map of Routt County 6. Various 1:24,000 scale topographic maps

  13. Two of Three Power Plant Modules at Neal Hot Springs Are Producing...

    Open Energy Info (EERE)

    Two of Three Power Plant Modules at Neal Hot Springs Are Producing up to 16.8 Megawatts Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Two of Three...

  14. Three-dimensional Q (super -1) model of the Coso Hot Springs...

    Open Energy Info (EERE)

    http:crossref.org Citation Young, C.Y.; Ward, R.W. . 511980. Three-dimensional Q (super -1) model of the Coso Hot Springs known geothermal resource area (in Coso geothermal...

  15. U.S. Geothermal Drills Another Prolific Well at Neal Hot Springs...

    Open Energy Info (EERE)

    U.S. Geothermal Drills Another Prolific Well at Neal Hot Springs Completes Production Wells Needed for Project Jump to: navigation, search OpenEI Reference LibraryAdd to library...

  16. EIS-0502: Hot Springs to Anaconda Transmission Line Rebuild Project...

    Energy Savers [EERE]

    Springs to Anaconda Transmission Line Rebuild Project, Montana SUMMARY DOE's Bonneville Power Administration (BPA) is preparing an EIS that will analyze the potential environmental...

  17. Hot Sulphur Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View NewTexas: Energy Resources JumpNew Jersey:Hopkinsville, Kentucky:OpenHot PotCounty,|OpenHotHot

  18. Recovery Act Validation of Innovative Exploration Techniques Pilgrim Hot Springs, Alaska

    SciTech Connect (OSTI)

    Holdmann, Gwen

    2015-04-30

    Drilling and temperature logging campaigns between the late 1970's and early 1980ĺs measured temperatures at Pilgrim Hot Springs in excess of 90░C. Between 2010 and 2014 the University of Alaska used a variety of methods including geophysical surveys, remote sensing techniques, heat budget modeling, and additional drilling to better understand the resource and estimate the available geothermal energy.

  19. Depositional facies and aqueous-solid geochemistry of travertine-depositing hot springs (Angel Terrace, Mammoth Hot Springs, Yellowstone National Park, USA)

    SciTech Connect (OSTI)

    Fouke, B.W.; Farmer, J.D.; Des Marais, D.J.; Pratt, L.; Sturchio, N.C.; Burns, P.C.; Discipulo, M.K.

    2000-05-01

    Petrographic and geochemical analyses of travertine-depositing hot springs at Angel Terrace, Mammoth Hot Springs, Yellowstone National Park, have been used to define five depositional facies along the spring drainage system. Spring waters are expelled in the vent facies at 71 to 73 C and precipitate mounded travertine composed of aragonite needle botryoids. The apron and channel facies (43--72 C) is floored by hollow tubes composed of aragonite needle botryoids that encrust sulfide-oxidizing Aquificales bacteria. The travertine of the pond facies (30--62 C) varies in composition from aragonite needle shrubs formed at higher temperatures to ridged networks of calcite and aragonite at lower temperatures. Calcite ice sheets, calcified bubbles, and aggregates of aragonite needles (fuzzy dumbbells) precipitate at the air-water interface and settle to pond floors. The proximal-slope facies (28--54 C), which forms the margins of terracette pools, is composed of arcuate aragonite needle shrubs that create small microterracettes on the steep slope face. Finally, the distal-slope facies (28--30 C) is composed of calcite spherules and calcite feather crystals. Despite the presence of abundant microbial mat communities and their observed role in providing substrates for mineralization, the compositions of spring-water and travertine predominantly reflect abiotic physical and chemical processes. Vigorous CO{sub 2} degassing causes a +2 unit increase in spring water pH, as well as Rayleigh-type covariations between the concentration of dissolved inorganic carbon and corresponding {delta}{sup 13}C. Travertine {delta}{sup 13}C and {delta}{sup 18}O are nearly equivalent to aragonite and calcite equilibrium values calculated from spring water in the higher-temperature ({approximately}50--73 C) depositional facies. Conversely, travertine precipitating in the lower-temperature (<{approximately}50 C) depositional facies exhibits {delta}{sup 13}C and {delta}{sup 18}O values that are as much as 4% less than predicted equilibrium values. This isotopic shift may record microbial respiration as well as downstream transport of travertine crystals. Despite the production of H{sub 2}S and the abundance of sulfide-oxidizing microbes, preliminary {delta}{sub 34}S data do not uniquely define the microbial metabolic pathways present in the spring system. This suggests that the high extent of CO{sub 2} degassing and large open-system solute reservoir in these thermal systems overwhelm biological controls on travertine crystal chemistry.

  20. Hot Springs Ranch Geothermal Area | Open Energy Information

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  1. Hot Sulphur Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

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  2. Hot Spring On Umnak Island Geothermal Area | Open Energy Information

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  3. Boiling Water at Hot Creek--The Dangerous and Dynamic Thermal Springs in California's Long Valley Caldera

    E-Print Network [OSTI]

    Torgersen, Christian

    Boiling Water at Hot Creek--The Dangerous and Dynamic Thermal Springs in California's Long Valley. Because of this danger, the U.S. Forest Service has had to close parts of the Hot Creek Geologic Site the region. The attractions of Hot Creek, however, also harbor danger. The locations, dis- charge rates

  4. Manley Hot Springs Greenhouse Low Temperature Geothermal Facility | Open

    Open Energy Info (EERE)

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  5. Goddard Hot Springs Geothermal Area | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View New PagesSustainableGlynn County, Georgia: Energy Resources Jump to: navigation,Goddard Hot

  6. Rowland Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/ColoradoRemsenburg-Speonk, NewMichigan: EnergyRocklinRohmRoshniRotokawaRovesRowland Hot

  7. Desert Hot Springs, California: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTIONRobertsdale, Alabama (UtilityInstruments IncMississippi:DeltaFish LakeDepew,Energy'sEnergySprings,

  8. Silver Star Hot Springs Geothermal Area | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-Enhancing Capacity forSilicium de Provence SAS Silpro Jump(Redirected fromSpringSilver

  9. Manley Hot Springs Space Heating Low Temperature Geothermal Facility | Open

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  10. Waunita Hot Springs Ranch Space Heating Low Temperature Geothermal Facility

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt Al.,Turin,VillageWarrensource HistoryOregon:WattQuizWaunita Hot| Open

  11. Hot Spring County, Arkansas: Energy Resources | Open Energy Information

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  12. Hot Springs County, Wyoming: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

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  13. Hot Springs Cove Geothermal Area | Open Energy Information

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  14. Hot Springs National Park Space Heating Low Temperature Geothermal Facility

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  15. Hot Sulphur Springs Space Heating Low Temperature Geothermal Facility |

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View NewTexas: Energy Resources JumpNew Jersey:Hopkinsville, Kentucky:OpenHotOpen Energy

  16. Double Hot Springs Geothermal Area | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTIONRobertsdale, Alabama (UtilityInstrumentsArea (DOEDixmont, Maine:Doraville,Alabama: EnergyDouble Hot

  17. Spencer Hot Springs Geothermal Area | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-Enhancing CapacityVectren) Jump to: navigation,SouthwoodJumpSpencer County,Spencer Hot

  18. Latty Hot Springs Geothermal Area | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View NewTexas:Montezuma, Arizona: Energy ResourcesProject | OpenLathrup Village, Michigan:Latty Hot

  19. Kahneetah Hot Springs Geothermal Area | Open Energy Information

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  20. Abraham Hot Springs Geothermal Area | Open Energy Information

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  1. Riggins Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

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  2. Travertine Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EA EISTJThin Film SolarTown ofTransportToolkit PrototypeTravertine Hot

  3. Baker Hot Spring Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EAandAmminex AAustriaBiofuels Brasil JumpGeorgia: Energy ResourcesBaker Hot

  4. Calistoga Hot Springs Geothermal Area | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmentalBowerbank, Maine:Kansas:Information 2ndCalifornia/Incentives <Calistoga Hot

  5. Big Windy Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental JumpInformation BeaufortBentMichigan:Greece)Daddy s BiodieselSky,Big Windy Hot

  6. Crane Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTIONRobertsdale, Alabama (Utility Company)|Alabama: Energy ResourcesVirginia: EnergyCrane Hot

  7. Ennis Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButtePowerEdisto Electric Coop, IncsourceEnginuity Energy, LLC Jump to:Ennis Hot

  8. Fales Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButtePowerEdisto Electric Coop,ErosionNewCoal Jump to:SheetWind JumpTexas:Fales Hot

  9. Gregson Hot Springs Geothermal Area | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource History View New PagesInformation RegionalGreenvironment plcGregson Hot

  10. Hot Springs Bay Geothermal Area | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource History View NewGuam: Energyarea,Magazine Jump to:II Wind FarmHorstHot

  11. Lee Hot Springs Geothermal Area | Open Energy Information

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  12. Medical Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource HistoryScenariosMarysville MtMedical Area Total Egy Plt Inc Jump to:Medical Hot

  13. Molly's Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsourceII Jump to: navigation, searchsource History ViewMoe Wind Farm Jump3Molly's Hot

  14. Montezuma Hot Spring Geothermal Area | Open Energy Information

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  15. Bell Island Hot Springs Geothermal Area | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoop IncIowaWisconsin: EnergyYorkColoradoBelcher Homes Jump to:OASBell Island Hot

  16. Brady Hot Springs I Geothermal Facility | Open Energy Information

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  17. Dyke Hot Springs Geothermal Area | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButtePower VenturesInformation9)askDouble Oak,Durra Building SystemsDyke Hot

  18. Carey Hot Springs Geothermal Area | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButte County,Camilla, Georgia: Energy ResourcesRanchCirculatingGlassCarey Hot

  19. Pilgrim Hot Springs Geothermal Area | Open Energy Information

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    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsourceII JumpQuarterly SmartDB-2, Blue Mountain GeothermalPilger Estates Hot

  20. Sierra Hot Springs Pool & Spa Low Temperature Geothermal Facility | Open

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-Enhancing Capacity for LowInformationShoshoneEnergy Information Hot Springs

  1. Analysis of hot springs and associated deposits in Yellowstone National Park using ASTER and AVIRIS remote sensing

    E-Print Network [OSTI]

    Ramsey, Michael

    Analysis of hot springs and associated deposits in Yellowstone National Park using ASTER and AVIRIS of Yellowstone National Park from the visible/near infrared (VNIR) to thermal infrared (TIR) wavelengths. Field and techniques; geothermal systems; Mars 1. Introduction There are thousands of known thermal springs on Earth

  2. Hot Spring Monitoring at Lassen Volcanic National Park, California 1983-1985

    SciTech Connect (OSTI)

    Sorey, Michael L.

    1986-01-21

    Data collected on several occasions between 1983 and 1985 as part of a hydrologic monitoring program by the U.S. Geological Survey permit preliminary estimation of the natural variability in the discharge characteristics of hydrothermal features in Lassen Volcanic National Park and the Lassen KGRA in northern California. The total rate of discharge of high-chloride hot springs along Mill Creek and Canyon Creek in the Lassen KGRA has averaged 20.9 {+-} 1.7 L/s, based on seven measurements of the flux of chloride in these streams. Measured chloride flux does not appear to increase with streamflow during the spring-summer snowmelt period, as observed at Yellowstone and Long Valley Caldera. The corresponding fluxes of arsenic in Mill Creek and Canyon Creek decrease within distances of about 2 km downstream from the hot springs by approximately 30%, most likely due to chemical absorption on streambed sediments. Within Lassen Volcanic National Park, measurements of sulfate flux in streams draining steam-heated thermal features at Sulphur Works and Bumpass Hell have averaged 7.5 {+-} 1.0 and 4.0 {+-} 1.5 g/s, respectively. Calculated rates of steam upflow containing, dissolved H{sub 2}S to supply these sulfate fluxes are 1.8 kg/s at Sulphur Works and 1.0 kg/s at Bumpass Hell.

  3. Ground Magnetics At Crump's Hot Springs Area (DOE GTP) | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View New PagesSustainableGlynn County,Solar JumpInformation Crump's Hot Springs Area (DOE GTP)

  4. Ground Magnetics At Neal Hot Springs Geothermal Area (Shaltry, 2012) | Open

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View New PagesSustainableGlynn County,Solar JumpInformation Crump's Hot Springs Area (DOEEnergy

  5. Ground Magnetics At Roosevelt Hot Springs Geothermal Area (Ward, Et Al.,

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View New PagesSustainableGlynn County,Solar JumpInformation Crump's Hot Springs Area1978) |

  6. Mercury Vapor At Mickey Hot Springs Area (Varekamp & Buseck, 1983) | Open

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History ViewMayo, Maryland: Energy Resources Jump1.2619821┬░,Energy Information Mickey Hot Springs Area

  7. Micro-Earthquake At Roosevelt Hot Springs Geothermal Area (Ward, Et Al.,

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History ViewMayo, Maryland: Energy ResourcesDec 2005 WindPRO isMickey Hot Springs5) Jump to:River

  8. Micro-Earthquake At Roosevelt Hot Springs Geothermal Area (Zandt, Et Al.,

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History ViewMayo, Maryland: Energy ResourcesDec 2005 WindPRO isMickey Hot Springs5) Jump to:River1982) |

  9. Steady states and linear stability analysis of precipitation pattern formation at geothermal hot springs

    E-Print Network [OSTI]

    Pak Yuen Chan; Nigel Goldenfeld

    2007-08-22

    A dynamical theory of geophysical precipitation pattern formation is presented and applied to irreversible calcium carbonate (travertine) deposition. Specific systems studied here are the terraces and domes observed at geothermal hot springs, such as those at Yellowstone National Park, and speleothems, particularly stalactites and stalagmites. The theory couples the precipitation front dynamics with shallow water flow, including corrections for turbulent drag and curvature effects. In the absence of capillarity and with a laminar flow profile, the theory predicts a one-parameter family of steady state solutions to the moving boundary problem describing the precipitation front. These shapes match well the measured shapes near the vent at the top of observed travertine domes. Closer to the base of the dome, the solutions deviate from observations, and circular symmetry is broken by a fluting pattern, which we show is associated with capillary forces causing thin film break-up. We relate our model to that recently proposed for stalactite growth, and calculate the linear stability spectrum of both travertine domes and stalactites. Lastly, we apply the theory to the problem of precipitation pattern formation arising from turbulent flow down an inclined plane, and identify a linear instability that underlies scale-invariant travertine terrace formation at geothermal hot springs.

  10. Geological, geochemical, and geophysical survey of the geothermal resources at Hot Springs Bay Valley, Akutan Island, Alaska

    SciTech Connect (OSTI)

    Motyka, R.J.; Wescott, E.M.; Turner, D.L.; Swanson, S.E.; Romick, J.D.; Moorman, M.A.; Poreda, R.J.; Witte, W.; Petzinger, B.; Allely, R.D.

    1985-01-01

    An extensive survey was conducted of the geothermal resource potential of Hot Springs Bay Valley on Akutan Island. A topographic base map was constructed, geologic mapping, geophysical and geochemical surveys were conducted, and the thermal waters and fumarolic gases were analyzed for major and minor element species and stable isotope composition. (ACR)

  11. Cryogenic opal-A deposition from Yellowstone hot springs Alan Channing a,, Ian B. Butler b,1

    E-Print Network [OSTI]

    Cryogenic opal-A deposition from Yellowstone hot springs Alan Channing a,, Ian B. Butler b,1 Sub-zero winter temperatures on the Yellowstone Plateau alter the opal-A precipitation pathway, contains abundant opal-A particles, comprising sheet and filament- like aggregations of opal-A microspheres

  12. Steady states and linear stability analysis of precipitation pattern formation at geothermal hot springs

    E-Print Network [OSTI]

    Chan, Pak Yuen

    2007-01-01

    A dynamical theory of geophysical precipitation pattern formation is presented and applied to irreversible calcium carbonate (travertine) deposition. Specific systems studied here are the terraces and domes observed at geothermal hot springs, such as those at Yellowstone National Park, and speleothems, particularly stalactites and stalagmites. The theory couples the precipitation front dynamics with shallow water flow, including corrections for turbulent drag and curvature effects. In the absence of capillarity and with a laminar flow profile, the theory predicts a one-parameter family of steady state solutions to the moving boundary problem describing the precipitation front. These shapes match well the measured shapes near the vent at the top of observed travertine domes. Closer to the base of the dome, the solutions deviate from observations, and circular symmetry is broken by a fluting pattern, which we show is associated with capillary forces causing thin film break-up. We relate our model to that recent...

  13. Bipole-dipole survey at Roosevelt Hot Springs, Thermal Area, Beaver County, Utah

    SciTech Connect (OSTI)

    Frangos, W.; Ward, S.H.

    1980-09-01

    A bipole-dipole electrical resistivity survey at Roosevelt Hot Springs thermal area, Beaver County, Utah was undertaken to evaluate the technique in a well-studied Basin and Range geothermal prospect. The major electrical characteristics of the area are clearly revealed but are not particularly descriptive of the geothermal system. More subtle variations of electrical resistivity accompanying the geothermal activity are detectable, although the influence of near-surface lateral resistivity variations imposes upon the survey design the necessity of a high station density. A useful practical step is to conduct a survey using transmitter locations and orientations which minimize the response of known features such as the resistivity boundary due to a range front fault. Survey results illustrate the effects of transmitter orientation and placement, and of subtle lateral resistivity variations. A known near-surface conductive zone is detected while no evidence is found for a deep conductive region.

  14. Centrifugal Compressors

    SciTech Connect (OSTI)

    Hastbacka, Mildred; Dieckmann, John; Bouza, Antonio

    2013-02-06

    The article discusses small high speed centrifugal compressors. This topic was covered in a previous ASHRAE Journal column (2003). This article reviews another configuration which has become an established product. The operation, energy savings and market potential of this offering are addressed as well.

  15. Supersonic compressor

    DOE Patents [OSTI]

    Lawlor, Shawn P. (Bellevue, WA); Novaresi, Mark A. (San Diego, CA); Cornelius, Charles C. (Kirkland, WA)

    2008-02-26

    A gas compressor based on the use of a driven rotor having an axially oriented compression ramp traveling at a local supersonic inlet velocity (based on the combination of inlet gas velocity and tangential speed of the ramp) which forms a supersonic shockwave axially, between adjacent strakes. In using this method to compress inlet gas, the supersonic compressor efficiently achieves high compression ratios while utilizing a compact, stabilized gasdynamic flow path. Operated at supersonic speeds, the inlet stabilizes an oblique/normal shock system in the gasdyanamic flow path formed between the gas compression ramp on a strake, the shock capture lip on the adjacent strake, and captures the resultant pressure within the stationary external housing while providing a diffuser downstream of the compression ramp.

  16. Hydride compressor

    DOE Patents [OSTI]

    Powell, James R. (Wading River, NY); Salzano, Francis J. (Patchogue, NY)

    1978-01-01

    Method of producing high energy pressurized gas working fluid power from a low energy, low temperature heat source, wherein the compression energy is gained by using the low energy heat source to desorb hydrogen gas from a metal hydride bed and the desorbed hydrogen for producing power is recycled to the bed, where it is re-adsorbed, with the recycling being powered by the low energy heat source. In one embodiment, the adsorption-desorption cycle provides a chemical compressor that is powered by the low energy heat source, and the compressor is connected to a regenerative gas turbine having a high energy, high temperature heat source with the recycling being powered by the low energy heat source.

  17. Slip and Dilation Tendency Anlysis of Neal Hot Springs Geothermal Area

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Faulds, James E.

    2013-12-31

    Stress field variation within each focus area was approximated based on regional published data and the world stress database (Hickman et al., 2000; Hickman et al., 1998 Robertson-Tait et al., 2004; Hickman and Davatzes, 2010; Davatzes and Hickman, 2006; Blake and Davatzes 2011; Blake and Davatzes, 2012; Moeck et al., 2010; Moos and Ronne, 2010 and Reinecker et al., 2005) as well as local stress information if applicable. For faults within these focus systems we applied either a normal faulting stress regime where the vertical stress (sv) is larger than the maximum horizontal stress (shmax) which is larger than the minimum horizontal stress (sv>shmax>shmin) or strike-slip faulting stress regime where the maximum horizontal stress (shmax) is larger than the vertical stress (sv) which is larger than the minimum horizontal stress (shmax >sv>shmin) depending on the general tectonic province of the system. Based on visual inspection of the limited stress magnitude data in the Great Basin we used magnitudes such that shmin/shmax = .527 and shmin/sv= .46, which are consistent with complete and partial stress field determinations from Desert Peak, Coso, the Fallon area and Dixie valley (Hickman et al., 2000; Hickman et al., 1998 Robertson-Tait et al., 2004; Hickman and Davatzes, 2011; Davatzes and Hickman, 2006; Blake and Davatzes 2011; Blake and Davatzes, 2012). Based on inversion of fault kinematic data, Edwards (2013) interpreted that two discrete stress orientations are preserved at Neal Hot Springs. An older episode of east-west directed extension and a younger episode of southwest-northeast directed sinistral, oblique -normal extension. This interpretation is consistent with the evolution of Cenozoic tectonics in the region (Edwards, 2013). As such we applied a southwest-northeast (060) directed normal faulting stress regime, consistent with the younger extensional episode, to the Neal Hot Springs faults. Under these stress conditions northeast striking steeply dipping fault segments have the highest tendency to dilate and northeast striking 60░ dipping fault segments have the highest tendency to slip. Under these stress condition...

  18. Slip and Dilation Tendency Anlysis of Neal Hot Springs Geothermal Area

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Faulds, James E.

    Stress field variation within each focus area was approximated based on regional published data and the world stress database (Hickman et al., 2000; Hickman et al., 1998 Robertson-Tait et al., 2004; Hickman and Davatzes, 2010; Davatzes and Hickman, 2006; Blake and Davatzes 2011; Blake and Davatzes, 2012; Moeck et al., 2010; Moos and Ronne, 2010 and Reinecker et al., 2005) as well as local stress information if applicable. For faults within these focus systems we applied either a normal faulting stress regime where the vertical stress (sv) is larger than the maximum horizontal stress (shmax) which is larger than the minimum horizontal stress (sv>shmax>shmin) or strike-slip faulting stress regime where the maximum horizontal stress (shmax) is larger than the vertical stress (sv) which is larger than the minimum horizontal stress (shmax >sv>shmin) depending on the general tectonic province of the system. Based on visual inspection of the limited stress magnitude data in the Great Basin we used magnitudes such that shmin/shmax = .527 and shmin/sv= .46, which are consistent with complete and partial stress field determinations from Desert Peak, Coso, the Fallon area and Dixie valley (Hickman et al., 2000; Hickman et al., 1998 Robertson-Tait et al., 2004; Hickman and Davatzes, 2011; Davatzes and Hickman, 2006; Blake and Davatzes 2011; Blake and Davatzes, 2012). Based on inversion of fault kinematic data, Edwards (2013) interpreted that two discrete stress orientations are preserved at Neal Hot Springs. An older episode of east-west directed extension and a younger episode of southwest-northeast directed sinistral, oblique -normal extension. This interpretation is consistent with the evolution of Cenozoic tectonics in the region (Edwards, 2013). As such we applied a southwest-northeast (060) directed normal faulting stress regime, consistent with the younger extensional episode, to the Neal Hot Springs faults. Under these stress conditions northeast striking steeply dipping fault segments have the highest tendency to dilate and northeast striking 60░ dipping fault segments have the highest tendency to slip. Under these stress condition...

  19. High Speed Compressors P.B. Bailey, M. W. Dadd, C. R. Stone.

    E-Print Network [OSTI]

    of the compressor. The `Oxford' type clearance seal/flexure bearing compressors are typically operated close to the main piston. Use of such a gas spring has some disadvantages: there is a second piston of small compact cryocooler compressors. INTRODUCTION The "Oxford" type of flexure bearing/clearance seal

  20. Identification of Novel Positive-Strand RNA Viruses by Metagenomic Analysis of Archaea-Dominated Yellowstone Hot Springs

    SciTech Connect (OSTI)

    Benjamin Bolduc; Daniel P. Shaughnessy; Yuri I. Wolf; Eugene V. Koonin; Francisco F. Roberto; Mark Young

    2012-05-01

    There are no known RNA viruses that infect Archaea. Filling this gap in our knowledge of viruses will enhance our understanding of the relationships between RNA viruses from the three domains of cellular life and, in particular, could shed light on the origin of the enormous diversity of RNA viruses infecting eukaryotes. We describe here the identification of novel RNA viral genome segments from high-temperature acidic hot springs in Yellowstone National Park in the United States. These hot springs harbor low-complexity cellular communities dominated by several species of hyperthermophilic Archaea. A viral metagenomics approach was taken to assemble segments of these RNA virus genomes from viral populations isolated directly from hot spring samples. Analysis of these RNA metagenomes demonstrated unique gene content that is not generally related to known RNA viruses of Bacteria and Eukarya. However, genes for RNA-dependent RNA polymerase (RdRp), a hallmark of positive-strand RNA viruses, were identified in two contigs. One of these contigs is approximately 5,600 nucleotides in length and encodes a polyprotein that also contains a region homologous to the capsid protein of nodaviruses, tetraviruses, and birnaviruses. Phylogenetic analyses of the RdRps encoded in these contigs indicate that the putative archaeal viruses form a unique group that is distinct from the RdRps of RNA viruses of Eukarya and Bacteria. Collectively, our findings suggest the existence of novel positive-strand RNA viruses that probably replicate in hyperthermophilic archaeal hosts and are highly divergent from RNA viruses that infect eukaryotes and even more distant from known bacterial RNA viruses. These positive-strand RNA viruses might be direct ancestors of RNA viruses of eukaryotes.

  1. EA-1002: Bonneville Power Administration's Hot Springs- Garrison Fiber Optic Project, Montana

    Office of Energy Efficiency and Renewable Energy (EERE)

    This EA evaluates the environmental impacts of the U.S. Department of Energy's Bonneville Power Administration's proposal to upgrade its operational telecommunications system between the Hot...

  2. Sulfur geochemistry of hydrothermal waters in Yellowstone National Park. 1: The origin of thiosulfate in hot spring waters

    SciTech Connect (OSTI)

    Xu, Y.; Schoonen, M.A.A. [SUNY, Stony Brook, NY (United States). Dept. of Geosciences] [SUNY, Stony Brook, NY (United States). Dept. of Geosciences; Nordstrom, D.K.; Cunningham, K.M.; Ball, J.W. [Geological Survey, Boulder, CO (United States). Water Resources Div.] [Geological Survey, Boulder, CO (United States). Water Resources Div.

    1998-12-01

    Thiosulfate (S{sub 2}O{sub 3}{sup 2{minus}}), polythionate (S{sub x}O{sub 6}{sup 2{minus}}), dissolved sulfide (H{sub 2}S), and sulfate (SO{sub 4}{sup 2{minus}}) concentrations in thirty-nine alkaline and acidic springs in Yellowstone National Park (YNP) were determined. The analyses were conducted on site, using ion chromatography for thiosulfate, polythionate, and sulfate, and using colorimetry for dissolved sulfide. Thiosulfate was detected at concentrations typically less than 2 {micro}mol/L in neutral and alkaline chloride springs with low sulfate concentrations (Cl{sup {minus}}/SO{sub 4}{sup 2{minus}} > 25). The thiosulfate concentration levels are about one to two orders of magnitude lower than the concentration of dissolved sulfide in these springs. In most acid sulfate and acid sulfate-chloride springs (Cl{sup {minus}}/SO{sub 4}{sup 2{minus}} < 10), thiosulfate concentrations were also typically lower than 2 {micro}mol/L. However, in some chloride springs enriched with sulfate (Cl{sup {minus}}/SO{sub 4}{sup 2{minus}} between 10 and 25), thiosulfate was found at concentrations ranging from 9 to 95 {micro}mol/L, higher than the concentrations of dissolved sulfide in these waters. Polythionate was detected only in Cinder Pool, Norris Geyser basin, at concentrations up to 8 {micro}mol/L, with an average S-chain-length from 4.1 to 4.9 sulfur atoms. The results indicate that no thiosulfate occurs in the deeper parts of the hydrothermal system. Thiosulfate may form, however, from (1) hydrolysis of native sulfur by hydrothermal solutions in the shallower parts (<50 m) of the system, (2) oxidation of dissolved sulfide upon mixing of a deep hydrothermal water with aerated shallow groundwater, and (3) the oxidation of dissolved sulfide by dissolved oxygen upon discharge of the hot spring. Upon discharge of a sulfide-containing hydrothermal water, oxidation proceeds rapidly as atmospheric oxygen enters the water. The transfer of oxygen is particularly effective if the hydrothermal discharge is turbulent and has a large surface area.

  3. U.S. Geothermal Announces More Test Results From the Neal Hot Springs Production Well and a Key Addition to Senior Staff

    Broader source: Energy.gov [DOE]

    U.S. Geothermal Inc. ("U.S. Geothermal"), a renewable energy company focused on the production of electricity from geothermal energy, announced today results from a second, higher rate flow test of the first full size production well (NHS-1) at the Neal Hot Springs Project.

  4. Hot

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield MunicipalTechnical Report:Speeding accessby aLED Street LightingFrom theHigh EfficiencyHot electron

  5. Chemical studies of selected trace elements in hot-spring drainages of Yellowstone National Park

    SciTech Connect (OSTI)

    Stauffer, R.E.; Jenne, E.A.; Ball, J.W.

    1980-01-01

    Intensive chemical studies were made of S(-II), O/sub 2/, Al, Fe, Mn, P, As(III), As(V), and Li in waters from two high-Cl, low Ca-Mg hotspring drainages in the Lower Geyser Basin, a warm spring system rich in Ca and Mg in the Yellowstone Canyon area, and the Madison River system above Hebgen Lake. Analyses were also made of other representative thermal waters from the Park.

  6. Manley Hot Springs Pool & Spa Low Temperature Geothermal Facility | Open

    Open Energy Info (EERE)

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  7. Recirculating rotary gas compressor

    DOE Patents [OSTI]

    Weinbrecht, John F. (601 Oakwood Loop, NE., Albuquerque, NM 87123)

    1992-01-01

    A positive displacement, recirculating Roots-type rotary gas compressor which operates on the basis of flow work compression. The compressor includes a pair of large diameter recirculation conduits (24 and 26) which return compressed discharge gas to the compressor housing (14), where it is mixed with low pressure inlet gas, thereby minimizing adiabatic heating of the gas. The compressor includes a pair of involutely lobed impellers (10 and 12) and an associated port configuration which together result in uninterrupted flow of recirculation gas. The large diameter recirculation conduits equalize gas flow velocities within the compressor and minimize gas flow losses. The compressor is particularly suited to applications requiring sustained operation at higher gas compression ratios than have previously been feasible with rotary pumps, and is particularly applicable to refrigeration or other applications requiring condensation of a vapor.

  8. Recirculating rotary gas compressor

    DOE Patents [OSTI]

    Weinbrecht, J.F.

    1992-02-25

    A positive displacement, recirculating Roots-type rotary gas compressor is described which operates on the basis of flow work compression. The compressor includes a pair of large diameter recirculation conduits which return compressed discharge gas to the compressor housing, where it is mixed with low pressure inlet gas, thereby minimizing adiabatic heating of the gas. The compressor includes a pair of involutely lobed impellers and an associated port configuration which together result in uninterrupted flow of recirculation gas. The large diameter recirculation conduits equalize gas flow velocities within the compressor and minimize gas flow losses. The compressor is particularly suited to applications requiring sustained operation at higher gas compression ratios than have previously been feasible with rotary pumps, and is particularly applicable to refrigeration or other applications requiring condensation of a vapor. 12 figs.

  9. Waunita Hot Springs Ranch Pool & Spa Low Temperature Geothermal Facility |

    Open Energy Info (EERE)

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  10. Water Sampling At Umpqua Hot Springs Area (Wood, 2002) | Open Energy

    Open Energy Info (EERE)

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  11. Hot Sulphur Springs Pool & Spa Low Temperature Geothermal Facility | Open

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View NewTexas: Energy Resources JumpNew Jersey:Hopkinsville, Kentucky:OpenHot

  12. Bald Mountain Hot Springs Pool & Spa Low Temperature Geothermal Facility |

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmental Jump to:EAandAmminex AAustriaBiofuels Brasil JumpGeorgia:Balch Springs,Open Energy

  13. High ratio recirculating gas compressor

    DOE Patents [OSTI]

    Weinbrecht, John F. (601 Oakwood Pl., NE., Albuquerque, NM 87123)

    1989-01-01

    A high ratio positive displacement recirculating rotary compressor is disclosed. The compressor includes an integral heat exchanger and recirculation conduits for returning cooled, high pressure discharge gas to the compressor housing to reducing heating of the compressor and enable higher pressure ratios to be sustained. The compressor features a recirculation system which results in continuous and uninterrupted flow of recirculation gas to the compressor with no direct leakage to either the discharge port or the intake port of the compressor, resulting in a capability of higher sustained pressure ratios without overheating of the compressor.

  14. High ratio recirculating gas compressor

    DOE Patents [OSTI]

    Weinbrecht, J.F.

    1989-08-22

    A high ratio positive displacement recirculating rotary compressor is disclosed. The compressor includes an integral heat exchanger and recirculation conduits for returning cooled, high pressure discharge gas to the compressor housing to reducing heating of the compressor and enable higher pressure ratios to be sustained. The compressor features a recirculation system which results in continuous and uninterrupted flow of recirculation gas to the compressor with no direct leakage to either the discharge port or the intake port of the compressor, resulting in a capability of higher sustained pressure ratios without overheating of the compressor. 10 figs.

  15. Zim's Hot Springs Pool & Spa Low Temperature Geothermal Facility | Open

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEtGeorgia:Illinois:WizardYates County,Zena, NewZhulu HuadaZim's Hot

  16. Hot Springs Soaking Pools Pool & Spa Low Temperature Geothermal Facility |

    Open Energy Info (EERE)

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  17. Hot Springs State Park Pool & Spa Low Temperature Geothermal Facility |

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View NewTexas: Energy Resources JumpNew Jersey:Hopkinsville, Kentucky:OpenHot PotCounty,|Open

  18. Flow Test At Pilgrim Hot Springs Area (DOE GTP) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View New PagesSustainable Urban Transport Jump to:Flanders,Information85-1986)Pilgrim Hot

  19. Kaiser Hot Springs Pool & Spa Low Temperature Geothermal Facility | Open

    Open Energy Info (EERE)

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  20. 2-M Probe At Pilgrim Hot Springs Area (DOE GTP) | Open Energy Information

    Open Energy Info (EERE)

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  1. Castle Hot Springs Pool & Spa Low Temperature Geothermal Facility | Open

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmentalBowerbank,Cammack Village,8199089┬░, -86.3376761┬░ ShowEnergy Information Hot

  2. Field Mapping At Hot Sulphur Springs Area (Goranson, 2005) | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButtePowerEdisto ElectricMonaster And Coolbaugh, 2007) Jump to:|Information Hot

  3. Flow Test At Crump's Hot Springs Area (DOE GTP) | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButtePowerEdistoWhiskey flatsInformation 7thFlorin, California:Crump's Hot

  4. Ground Gravity Survey At Lake City Hot Springs Area (Warpinski, Et Al.,

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource History View New PagesInformationEnergy Information 2) JumpHot Pot

  5. Micro-Earthquake At Brady Hot Springs Geothermal Area (2011) | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource HistoryScenariosMarysville MtMedical AreaInformationMickey Hot(Majer,

  6. Supersonic gas compressor

    DOE Patents [OSTI]

    Lawlor, Shawn P. (Bellevue, WA); Novaresi, Mark A. (San Diego, CA); Cornelius, Charles C. (Kirkland, WA)

    2007-11-13

    A gas compressor based on the use of a driven rotor having a compression ramp traveling at a local supersonic inlet velocity (based on the combination of inlet gas velocity and tangential speed of the ramp) which compresses inlet gas against a stationary sidewall. In using this method to compress inlet gas, the supersonic compressor efficiently achieves high compression ratios while utilizing a compact, stabilized gasdynamic flow path. Operated at supersonic speeds, the inlet stabilizes an oblique/normal shock system in the gasdyanamic flow path formed between the rim of the rotor, the strakes, and a stationary external housing. Part load efficiency is enhanced by the use of a pre-swirl compressor, and using a bypass stream to bleed a portion of the intermediate pressure gas after passing through the pre-swirl compressor back to the inlet of the pre-swirl compressor. Inlet guide vanes to the compression ramp enhance overall efficiency.

  7. Feasibility study for a 10 MM GPY fuel ethanol plant, Brady Hot Springs, Nevada. Volume II. Geothermal resource, agricultural feedstock, markets and economic viability

    SciTech Connect (OSTI)

    Not Available

    1980-09-01

    The issues of the geothermal resource at Brady's Hot Springs are dealt with: the prospective supply of feedstocks to the ethanol plant, the markets for the spent grain by-products of the plant, the storage, handling and transshipment requirements for the feedstocks and by-products from a rail siding facility at Fernley, the probable market for fuel ethanol in the region, and an assessment of the economic viability of the entire undertaking.

  8. Big George to Carter Mountain 115-kV transmission line project, Park and Hot Springs Counties, Wyoming. Environmental Assessment

    SciTech Connect (OSTI)

    Not Available

    1994-02-01

    The Western Area Power Administration (Western) is proposing to rebuild, operate, and maintain a 115-kilovolt (kV) transmission line between the Big George and Carter Mountain Substations in northwest Wyoming (Park and Hot Springs Counties). This environmental assessment (EA) was prepared in compliance with the National Environmental Policy Act (NEPA) and the regulations of the Council on Environmental Quality (CEQ) and the Department of Energy (DOE). The existing Big George to Carter Mountain 69-kV transmission line was constructed in 1941 by the US Department of Interior, Bureau of Reclamation, with 1/0 copper conductor on wood-pole H-frame structures without an overhead ground wire. The line should be replaced because of the deteriorated condition of the wood-pole H-frame structures. Because the line lacks an overhead ground wire, it is subject to numerous outages caused by lightning. The line will be 54 years old in 1995, which is the target date for line replacement. The normal service life of a wood-pole line is 45 years. Under the No Action Alternative, no new transmission lines would be built in the project area. The existing 69-kV transmission line would continue to operate with routine maintenance, with no provisions made for replacement.

  9. Feasibility study for a 10-MM-GPY fuel ethanol plant, Brady Hot Springs, Nevada. Volume 1. Process and plant design

    SciTech Connect (OSTI)

    Not Available

    1980-09-01

    An investigation was performed to determine the technical and economic viability of constructing and operating a geothermally heated, biomass, motor fuel alcohol plant at Brady's Hot Springs. The results of the study are positive, showing that a plant of innovative, yet proven design can be built to adapt current commerical fermentation-distillation technology to the application of geothermal heat energy. The specific method of heat production from the Brady's Hot Spring wells has been successful for some time at an onion drying plant. Further development of the geothermal resource to add the capacity needed for an ethanol plant is found to be feasible for a plant sized to produce 10 million gallons of motor fuel grade ethanol per year. A very adequate supply of feedgrains is found to be available for use in the plant without impact on the local or regional feedgrain market. The effect of diverting supplies from the animal feedlots in Northern Nevada and California will be mitigated by the by-product output of high-protein feed supplements that the plant will produce. The plant will have a favorable impact on the local farming economies of Fallon, Lovelock, Winnemucca and Elko, Nevada. It will make a positive and significant socioeconomic contribution to Churchill County, providing direct employment for an additional 61 persons. Environmental impact will be negligible, involving mostly a moderate increase in local truck traffic and railroad siding activity. The report is presented in two volumes. Volume 1 deals with the technical design aspects of the plant. The second volume addresses the issue of expanded geothermal heat production at Brady's Hot Springs, goes into the details of feedstock supply economics, and looks at the markets for the plant's primary ethanol product, and the markets for its feed supplement by-products. The report concludes with an analysis of the economic viability of the proposed project.

  10. Energy Savings for Centrifugal Compressorsá

    E-Print Network [OSTI]

    Fisher, D.

    2011-01-01

    Current design improvements of both the rotating and stationary aerodynamic components of centrifugal compressors can greatly increase the efficiency of vintage machines. A centrifugal compressor built in the 1970's or 1980's might have an external...

  11. Standing wave compressor

    DOE Patents [OSTI]

    Lucas, Timothy S. (4614 River Mill Ct., Glen Allen, VA 23060)

    1991-01-01

    A compressor for compression-evaporation cooling systems, which requires no moving parts. A gaseous refrigerant inside a chamber is acoustically compressed and conveyed by means of a standing acoustic wave which is set up in the gaseous refrigerant. This standing acoustic wave can be driven either by a transducer, or by direct exposure of the gas to microwave and infrared sources, including solar energy. Input and output ports arranged along the chamber provide for the intake and discharge of the gaseous refrigerant. These ports can be provided with optional valve arrangements, so as to increase the compressor's pressure differential. The performance of the compressor in either of its transducer or electromagnetically driven configurations, can be optimized by a controlling circuit. This controlling circuit holds the wavelength of the standing acoustical wave constant, by changing the driving frequency in response to varying operating conditions.

  12. Compressor surge counter

    DOE Patents [OSTI]

    Castleberry, Kimberly N. (Harriman, TN)

    1983-01-01

    A surge counter for a rotating compressor is provided which detects surging by monitoring the vibration signal from an accelerometer mounted on the shaft bearing of the compressor. The circuit detects a rapid increase in the amplitude envelope of the vibration signal, e.g., 4 dB or greater in less than one second, which is associated with a surge onset and increments a counter. The circuit is rendered non-responsive for a period of about 5 seconds following the detection which corresponds to the duration of the surge condition. This prevents multiple registration of counts during the surge period due to rapid swings in vibration amplitude during the period.

  13. Hot Springs folio, Arkansasá

    E-Print Network [OSTI]

    Purdue, A. H. (Albert Homer), 1861-1917.

    1923-01-01

    stream_source_info GFolio215.pdf.txt stream_content_type text/plain stream_size 22 Content-Encoding ISO-8859-1 stream_name GFolio215.pdf.txt Content-Type text/plain; charset=ISO-8859-1 ...

  14. Pilgrim Hot Springs, Alaska

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Financing Tool Fits theCommitteeCrystalline Silicon Cell Basics Photovoltaic

  15. Complete Genome Sequence of Paenibacillus strain Y4.12MC10, a Novel Paenibacillus lautus strain Isolated from Obsidian Hot Spring in Yellowstone National Park

    SciTech Connect (OSTI)

    Mead, David [University of Wisconsin, Madison; Lucas, Susan [U.S. Department of Energy, Joint Genome Institute; Copeland, A [U.S. Department of Energy, Joint Genome Institute; Lapidus, Alla L. [U.S. Department of Energy, Joint Genome Institute; Cheng, Jan-Fang [U.S. Department of Energy, Joint Genome Institute; Bruce, David [Los Alamos National Laboratory (LANL); Goodwin, Lynne A. [Los Alamos National Laboratory (LANL); Pitluck, Sam [U.S. Department of Energy, Joint Genome Institute; Chertkov, Olga [Los Alamos National Laboratory (LANL); Zhang, Xiaojing [Los Alamos National Laboratory (LANL); Detter, J. Chris [U.S. Department of Energy, Joint Genome Institute; Han, Cliff [Los Alamos National Laboratory (LANL); Tapia, Roxanne [Los Alamos National Laboratory (LANL); Land, Miriam L [ORNL; Hauser, Loren John [ORNL; Chang, Yun-Juan [ORNL; Kyrpides, Nikos C [U.S. Department of Energy, Joint Genome Institute; Ivanova, N [U.S. Department of Energy, Joint Genome Institute; Ovchinnikova, Galina [U.S. Department of Energy, Joint Genome Institute; Woyke, Tanja [U.S. Department of Energy, Joint Genome Institute; Brumm, Catherine [United States Department of Energy Joint Genome Institute; Hochstein, Rebecca [Lucigen Corporation, Middleton, Wisconsin; Schoenfeld, Thomas [Lucigen Corporation, Middleton, Wisconsin; Brumm, Phillip [University of Wisconsin, Madison

    2012-01-01

    Paenibacillus speciesY412MC10 was one of a number of organisms initially isolated from Obsidian Hot Spring, Yellowstone National Park, Montana, USA. The isolate Y412MC10 was initially classified as a Geobacillus sp. based on its isolation conditions and similarity to other organisms isolated from hot springs at Yellowstone National Park. Comparison of 16 S rRNA sequences within the Bacillales indicated that Geobacillus sp.Y412MC10 clustered with Paenibacillus species and not Geobacillus; the 16S rRNA analysis indicated the organism was a strain of Paenibacillus lautus. Lucigen Corp. prepared genomic DNA and the genome was sequenced, assembled, and annotated by the DOE Joint Genome Institute. The genome of Paenibacillus lautus strain Y412MC10 consists of one circular chromosome of 7,121,665 bp with an average G+C content of 51.2%. The Paenibacillus sp.Y412MC10 genome sequence was deposited at the NCBI in October 2009 (NC{_}013406). Comparison to other Paenibacillus species shows the organism lacks nitrogen fixation, antibiotic production and social interaction genes reported in other Paenibacilli. Over 25% of the proteins predicted by the Y412MC10 genome share no identity with the closest sequenced Paenibacillus species; most of these are predicted hypothetical proteins and their specific function in the environment is unknown.

  16. A COURSE ANNOUNCEMENT FOR SPRING 2002

    E-Print Network [OSTI]

    Camci, Cengiz

    aircraft engine compressors and turbines, spacecraft turbomachinery, ground based gas turbine systemsA COURSE ANNOUNCEMENT FOR SPRING 2002 Department of Aerospace Engineering THEORY & DESIGN, pumps and hydraulic turbines. ONE DIMENSIONAL ANALYSIS OF TURBOMACHINERY SYSTEMS OVERALL PERFORMANCE

  17. Light intensity compressor

    DOE Patents [OSTI]

    Rushford, Michael C. (Livermore, CA)

    1990-01-01

    In a system for recording images having vastly differing light intensities over the face of the image, a light intensity compressor is provided that utilizes the properties of twisted nematic liquid crystals to compress the image intensity. A photoconductor or photodiode material that is responsive to the wavelength of radiation being recorded is placed adjacent a layer of twisted nematic liquid crystal material. An electric potential applied to a pair of electrodes that are disposed outside of the liquid crystal/photoconductor arrangement to provide an electric field in the vicinity of the liquid crystal material. The electrodes are substantially transparent to the form of radiation being recorded. A pair of crossed polarizers are provided on opposite sides of the liquid crystal. The front polarizer linearly polarizes the light, while the back polarizer cooperates with the front polarizer and the liquid crystal material to compress the intensity of a viewed scene. Light incident upon the intensity compressor activates the photoconductor in proportion to the intensity of the light, thereby varying the field applied to the liquid crystal. The increased field causes the liquid crystal to have less of a twisting effect on the incident linearly polarized light, which will cause an increased percentage of the light to be absorbed by the back polarizer. The intensity of an image may be compressed by forming an image on the light intensity compressor.

  18. Advanced Hybrid Water Heater using Electrochemical Compressor...

    Energy Savers [EERE]

    Advanced Hybrid Water Heater using Electrochemical Compressor Advanced Hybrid Water Heater using Electrochemical Compressor Xergy is using its Electro Chemical Compression (ECC)...

  19. Downhole steam generator having a downhole oxidant compressor

    DOE Patents [OSTI]

    Fox, Ronald L. (Albuquerque, NM)

    1983-01-01

    Apparatus and method for generation of steam in a borehole for penetration into an earth formation wherein a downhole oxidant compressor is used to compress relatively low pressure (atmospheric) oxidant, such as air, to a relatively high pressure prior to mixing with fuel for combustion. The multi-stage compressor receives motive power through a shaft driven by a gas turbine powered by the hot expanding combustion gases. The main flow of compressed oxidant passes through a velocity increasing nozzle formed by a reduced central section of the compressor housing. An oxidant bypass feedpipe leading to peripheral oxidant injection nozzles of the combustion chamber are also provided. The downhole compressor allows effective steam generation in deep wells without need for high pressure surface compressors. Feedback preheater means are provided for preheating fuel in a preheat chamber. Preheating of the water occurs in both a water feed line running from aboveground and in a countercurrent water flow channel surrounding the combustor assembly. The countercurrent water flow channels advantageously serve to cool the combustion chamber wall. The water is injected through slotted inlets along the combustion chamber wall to provide an unstable boundary layer and stripping of the water from the wall for efficient steam generation. Pressure responsive doors are provided at the steam outlet for closing and sealing the combustion chamber from entry of reservoir fluids in the event of a flameout.

  20. Dual capacity reciprocating compressor

    DOE Patents [OSTI]

    Wolfe, Robert W. (Wilkinsburg, PA)

    1984-01-01

    A multi-cylinder compressor 10 particularly useful in connection with northern climate heat pumps and in which different capacities are available in accordance with reversing motor 16 rotation is provided with an eccentric cam 38 on a crank pin 34 under a fraction of the connecting rods, and arranged for rotation upon the crank pin between opposite positions 180.degree. apart so that with cam rotation on the crank pin such that the crank throw is at its normal maximum value all pistons pump at full capacity, and with rotation of the crank shaft in the opposite direction the cam moves to a circumferential position on the crank pin such that the overall crank throw is zero. Pistons 24 whose connecting rods 30 ride on a crank pin 36 without a cam pump their normal rate with either crank rotational direction. Thus a small clearance volume is provided for any piston that moves when in either capacity mode of operation.

  1. Dual capacity reciprocating compressor

    DOE Patents [OSTI]

    Wolfe, R.W.

    1984-10-30

    A multi-cylinder compressor particularly useful in connection with northern climate heat pumps and in which different capacities are available in accordance with reversing motor rotation is provided with an eccentric cam on a crank pin under a fraction of the connecting rods, and arranged for rotation upon the crank pin between opposite positions 180[degree] apart so that with cam rotation on the crank pin such that the crank throw is at its normal maximum value all pistons pump at full capacity, and with rotation of the crank shaft in the opposite direction the cam moves to a circumferential position on the crank pin such that the overall crank throw is zero. Pistons whose connecting rods ride on a crank pin without a cam pump their normal rate with either crank rotational direction. Thus a small clearance volume is provided for any piston that moves when in either capacity mode of operation. 6 figs.

  2. Semi-active compressor valve

    DOE Patents [OSTI]

    Brun, Klaus (Helotes, TX); Gernentz, Ryan S. (San Antonio, TX)

    2010-07-27

    A method and system for fine-tuning the motion of suction or discharge valves associated with cylinders of a reciprocating gas compressor, such as the large compressors used for natural gas transmission. The valve's primary driving force is conventional, but the valve also uses an electromagnetic coil to sense position of the plate (or other plugging element) and to provide an opposing force prior to impact.

  3. Estimation of microbial cover distributions at Mammoth Hot

    E-Print Network [OSTI]

    Goldenfeld, Nigel

    library information from travertine-forming hot springs in Yellowstone Na- tional Park to provide to be obtained in a va- riety of environments ranging from geothermal hot springs to the oral cav- ity. Clone

  4. Compressor bleed cooling fluid feed system

    DOE Patents [OSTI]

    Donahoo, Eric E; Ross, Christopher W

    2014-11-25

    A compressor bleed cooling fluid feed system for a turbine engine for directing cooling fluids from a compressor to a turbine airfoil cooling system to supply cooling fluids to one or more airfoils of a rotor assembly is disclosed. The compressor bleed cooling fluid feed system may enable cooling fluids to be exhausted from a compressor exhaust plenum through a downstream compressor bleed collection chamber and into the turbine airfoil cooling system. As such, the suction created in the compressor exhaust plenum mitigates boundary layer growth along the inner surface while providing flow of cooling fluids to the turbine airfoils.

  5. Diel metabolomics analysis of a hot spring chlorophototrophic microbial mat leads to new hypotheses of community member metabolisms

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Kim, Young-Mo; Nowack, Shane; Olsen, Millie; Becraft, Eric; Wood, Jason M.; Thiel, Vera; Klapper, Isaac; Kuhl, Michael; Fredrickson, Jim K.; Bryant, Donald A.; et al

    2015-04-17

    Dynamic environmental factors such as light, nutrients, salt, and temperature continuously affect chlorophototrophic microbial mats, requiring adaptative and acclimative responses to stabilize composition and function. Quantitative metabolomics analysis can provide insights into metabolite dynamics for understanding community response to such changing environmental conditions. In this study, we quantified volatile organic acids, polar metabolites (amino acids, glycolytic and citric acid cycle intermediates, nucleobases, nucleosides, and sugars), wax esters, and polyhydroxyalkanoates, resulting in the identification of 104 metabolites and related molecules in thermal chlorophototrophic microbial mat cores collected over a diel cycle in Mushroom Spring, Yellowstone National Park. A limited number ofmoreá╗predominant taxa inhabiting this community and their functional potentials have been previously identified through metagenomic and metatranscriptomic analyses and in situ metabolisms and metabolic interactions among these taxa have been hypothesized. Our metabolomics results confirmed the diel cycling of photorespiration (e.g. glycolate) and fermentation (e.g. acetate, propionate, and lactate) products, the carbon storage polymers polyhydroxyalkanoates, and dissolved gases (e.g. H2 and CO2) in the waters overlying the mat, which were hypothesized to occur in major mat chlorophototrophic community members. In addition, we have formulated the following new hypotheses: 1) the morning hours are a time of biosynthesis of amino acids, DNA, and RNA; 2) Synechococcus spp. produce CH4 via metabolism of phosphonates, and photo-inhibited cells may also produce lactate via fermentation as an alternate metabolism; 3) glycolate and lactate are exchanged among Synechococcus and Roseiflexus spp.; and 4) fluctuations in many metabolite pools (e.g. wax esters) at different times of day result from species found at different depths within the mat responding to temporal differences in their niches.źáless

  6. Diel metabolomics analysis of a hot spring chlorophototrophic microbial mat leads to new hypotheses of community member metabolisms

    SciTech Connect (OSTI)

    Kim, Young-Mo; Nowack, Shane; Olsen, Millie; Becraft, Eric; Wood, Jason M.; Thiel, Vera; Klapper, Isaac; Kuhl, Michael; Fredrickson, Jim K.; Bryant, Donald A.; Ward, David M.; Metz, Thomas O.

    2015-04-17

    Dynamic environmental factors such as light, nutrients, salt, and temperature continuously affect chlorophototrophic microbial mats, requiring adaptative and acclimative responses to stabilize composition and function. Quantitative metabolomics analysis can provide insights into metabolite dynamics for understanding community response to such changing environmental conditions. In this study, we quantified volatile organic acids, polar metabolites (amino acids, glycolytic and citric acid cycle intermediates, nucleobases, nucleosides, and sugars), wax esters, and polyhydroxyalkanoates, resulting in the identification of 104 metabolites and related molecules in thermal chlorophototrophic microbial mat cores collected over a diel cycle in Mushroom Spring, Yellowstone National Park. A limited number of predominant taxa inhabiting this community and their functional potentials have been previously identified through metagenomic and metatranscriptomic analyses and in situ metabolisms and metabolic interactions among these taxa have been hypothesized. Our metabolomics results confirmed the diel cycling of photorespiration (e.g. glycolate) and fermentation (e.g. acetate, propionate, and lactate) products, the carbon storage polymers polyhydroxyalkanoates, and dissolved gases (e.g. H2 and CO2) in the waters overlying the mat, which were hypothesized to occur in major mat chlorophototrophic community members. In addition, we have formulated the following new hypotheses: 1) the morning hours are a time of biosynthesis of amino acids, DNA, and RNA; 2) Synechococcus spp. produce CH4 via metabolism of phosphonates, and photo-inhibited cells may also produce lactate via fermentation as an alternate metabolism; 3) glycolate and lactate are exchanged among Synechococcus and Roseiflexus spp.; and 4) fluctuations in many metabolite pools (e.g. wax esters) at different times of day result from species found at different depths within the mat responding to temporal differences in their niches.

  7. Control apparatus for hot gas engine

    DOE Patents [OSTI]

    Stotts, Robert E. (Clifton Park, NY)

    1986-01-01

    A mean pressure power control system for a hot gas (Stirling) engine utilizing a plurality of supply tanks for storing a working gas at different pressures. During pump down operations gas is bled from the engine by a compressor having a plurality of independent pumping volumes. In one embodiment of the invention, a bypass control valve system allows one or more of the compressor volumes to be connected to the storage tanks. By selectively sequencing the bypass valves, a capacity range can be developed over the compressor that allows for lower engine idle pressures and more rapid pump down rates.

  8. Power Characteristics of Industrial Air Compressorsá

    E-Print Network [OSTI]

    Schmidt, C.; Kissock, K.

    2003-01-01

    common types of compressor control for small reciprocating and rotary air compressors, and derive relations for estimating compressed air output as a function of the type of control and motor loading. Using these relations, we develop a method to estimate...

  9. Economics of Electric Compressors for Gas Transmissioná

    E-Print Network [OSTI]

    Schmeal, W. R.; Hibbs, J. J.

    1994-01-01

    Three new factors are coming together to motivate gas pipeline firms to consider electric motors for replacement of older reciprocating gas engines for compressor systems, and for new compressor installations. These factors are environmental...

  10. Water injected fuel cell system compressor

    DOE Patents [OSTI]

    Siepierski, James S. (Williamsville, NY); Moore, Barbara S. (Victor, NY); Hoch, Martin Monroe (Webster, NY)

    2001-01-01

    A fuel cell system including a dry compressor for pressurizing air supplied to the cathode side of the fuel cell. An injector sprays a controlled amount of water on to the compressor's rotor(s) to improve the energy efficiency of the compressor. The amount of water sprayed out the rotor(s) is controlled relative to the mass flow rate of air inputted to the compressor.

  11. Unique compressor passes field test

    SciTech Connect (OSTI)

    Not Available

    1992-10-01

    Revolutionary pipeline compression concept has proved successful at a Transcontinental Gas Pipe Line facility in Alabama. In April 1992, the MOPICO electric drive compressor completed 5,000 hours of successful operation at Transcontinental Gas Pipeline's Station 100 at Billingsley, Ala. The revolutionary gas pipeline compression concept eliminates many of the traditional complexities of a pipeline compressor station and has benefits not possible with conventional compressor systems. This paper reports that this is accomplished through the integration of technologies developed over the past 10 years into a design concept unique in the industry. Ross Hill Controls Inc., Houston, provides the adjustable-speed variable frequency drive unit that allows the electric motor to operate at speeds from 6,2000 rpm to 10,000 rpm. Transco Energy Ventures, a division of Transco Energy, participated in the development and assisted in placing the prototype unit on the Transcontinental Gas Pipeline system.

  12. Correlation of gold in siliceous sinters with {sup 3}He/{sup 4}He in hot spring waters of Yellowstone National Park

    SciTech Connect (OSTI)

    Fournier, R.O.; Thompson, J.M. [Geological Survey, Menlo Park, CA (United States)] [Geological Survey, Menlo Park, CA (United States); Kennedy, B.M. [Lawrence Berkeley Lab., CA (United States)] [Lawrence Berkeley Lab., CA (United States); Aoki, Masahiro [Geological Survey of Japan, Tsukuba (Japan)] [Geological Survey of Japan, Tsukuba (Japan)

    1994-12-01

    Opaline sinter samples collected at Yellowstone National Park (YNP) were analyzed for gold by neutron activation and for other trace elements by the inductively coupled plasma optical emission spectroscopy (ICP-OES) method. No correlation was found between Au and As, Sb, or total Fe in the sinters, although the sample containing the highest Au also contains the highest Sb. There also was no correlation of Au in the sinter with the H{sub 2}S concentration in the discharged hot spring water or with the estimated temperature of last equilibration of the water with the surrounding rock. The Au in rhyolitic tuffs and lavas at YNP found within the Yellowstone caldera show the same range in Au as do those outside the caldera, while thermal waters from within this caldera all have been found to contain relatively low dissolved Au and to deposit sinters that contain relatively little Au. Therefore, it is not likely that variations in Au concentrations among these sinters simply reflect differences in leachable Au in the rocks through which the hydrothermal fluids have passed. Rather, variations in [H{sub 2}S], the concentration of total dissolved sulfide, that result from different physical and chemical processes that occur in different parts of the hydrothermal system appear to exert the main control on the abundance of Au in these sinters. Hydrothermal fluids at YNP convect upward through a series of successively shallower and cooler reservoirs where water-rock chemical and isotopic reactions occur in response to changing temperature and pressure. In some parts of the system the fluids undergo decompressional boiling, and in other parts they cool conductively without boiling. Mixing of ascending water from deep in the system with shallow groundwaters is common. All three processes generally result in a decrease in [H{sub 2}S] and destabilize dissolved gold bisulfide complexes in reservoir waters in the YNP system.

  13. Geothermal resistivity resource evaluation survey Waunita Hot...

    Open Energy Info (EERE)

    Geothermal resistivity resource evaluation survey Waunita Hot Springs project, Gunnison County, Colorado Jump to: navigation, search OpenEI Reference LibraryAdd to library Report:...

  14. Active stabilization of rotating stall in a three-stage axial compressor

    SciTech Connect (OSTI)

    Haynes, J.M.; Hendricks, G.J.; Epstein, A.H. . Gas Turbine Lab.)

    1994-04-01

    A three-stage, low-speed axial research compressor has been actively stabilized by damping low-amplitude circumferentially traveling waves, which can grow into rotating stall. Using a circumferential array of hot-wire sensors, and an array of high-speed individually positioned control vanes as the actuator, the first and second spatial harmonics of the compressor were stabilized down to a characteristic slope of 0.9, yielding an 8 percent increase in operating flow range. Stabilization of the third spatial harmonic did not alter the stalling flow coefficient. The actuators were also used open loop to determine the forced response behavior of the compressor. A system identification procedure applied to the forced response data then yielded the compressor transfer function. The Moore-Greitzer two-dimensional stability model was modified as suggested by the measurements to include the effect of blade row time lags on the compressor dynamics. This modified Moore-Greitzer model was then used to predict both the open and closed-loop dynamic response of the compressor. The model predictions agreed closely with the experimental results. In particular, the model predicted both the mass flow at stall without control and the design parameters needed by, and the range extension realized from, active control.

  15. Oil cooled, hermetic refrigerant compressor

    DOE Patents [OSTI]

    English, William A. (Murrysville, PA); Young, Robert R. (Murrysville, PA)

    1985-01-01

    A hermetic refrigerant compressor having an electric motor and compressor assembly in a hermetic shell is cooled by oil which is first cooled in an external cooler 18 and is then delivered through the shell to the top of the motor rotor 24 where most of it is flung radially outwardly within the confined space provided by the cap 50 which channels the flow of most of the oil around the top of the stator 26 and then out to a multiplicity of holes 52 to flow down to the sump and provide further cooling of the motor and compressor. Part of the oil descends internally of the motor to the annular chamber 58 to provide oil cooling of the lower part of the motor, with this oil exiting through vent hole 62 also to the sump. Suction gas with entrained oil and liquid refrigerant therein is delivered to an oil separator 68 from which the suction gas passes by a confined path in pipe 66 to the suction plenum 64 and the separated oil drops from the separator to the sump. By providing the oil cooling of the parts, the suction gas is not used for cooling purposes and accordingly increase in superheat is substantially avoided in the passage of the suction gas through the shell to the suction plenum 64.

  16. Oil cooled, hermetic refrigerant compressor

    DOE Patents [OSTI]

    English, W.A.; Young, R.R.

    1985-05-14

    A hermetic refrigerant compressor having an electric motor and compressor assembly in a hermetic shell is cooled by oil which is first cooled in an external cooler and is then delivered through the shell to the top of the motor rotor where most of it is flung radially outwardly within the confined space provided by the cap which channels the flow of most of the oil around the top of the stator and then out to a multiplicity of holes to flow down to the sump and provide further cooling of the motor and compressor. Part of the oil descends internally of the motor to the annular chamber to provide oil cooling of the lower part of the motor, with this oil exiting through vent hole also to the sump. Suction gas with entrained oil and liquid refrigerant therein is delivered to an oil separator from which the suction gas passes by a confined path in pipe to the suction plenum and the separated oil drops from the separator to the sump. By providing the oil cooling of the parts, the suction gas is not used for cooling purposes and accordingly increase in superheat is substantially avoided in the passage of the suction gas through the shell to the suction plenum. 3 figs.

  17. Digital Dynamic Range Compressor Design--A Tutorial and Analysis

    E-Print Network [OSTI]

    Reiss, Josh

    PAPERS Digital Dynamic Range Compressor Design-- A Tutorial and Analysis DIMITRIOS GIANNOULIS formal knowledge and analysis of compressor design techniques. In this tutorial we describe several become audio engineers' favorites for certain types of signal. The analysis of compressor designs

  18. Guide to Minimizing Compressor-Based Cooling | Department of...

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

    Compressor-Based Cooling Guide to Minimizing Compressor-Based Cooling Guide describes best practices for reducing energy use and total cost of ownership for data center cooling...

  19. Low-Cost Electrochemical Compressor Utilizing Green Refrigerants...

    Office of Environmental Management (EM)

    Low-Cost Electrochemical Compressor Utilizing Green Refrigerants for HVAC Applications Low-Cost Electrochemical Compressor Utilizing Green Refrigerants for HVAC Applications...

  20. HELIUM COMPRESSOR MONITORING SYSTEM Donna Kubik

    E-Print Network [OSTI]

    HELIUM COMPRESSOR MONITORING SYSTEM Donna Kubik Arecibo Observatory #12;1 CONTENTS 1. Design goals for Phaseloss Detection Lambda +15V Power Supply Distribution Remote Control of 120VC to Compressor Monitoring System Fiber and Network Connections #12;3 1. Design goals Helium refrigerators cool the cryogenically

  1. Refrigeration system having standing wave compressor

    DOE Patents [OSTI]

    Lucas, Timothy S. (Glen Allen, VA)

    1992-01-01

    A compression-evaporation refrigeration system, wherein gaseous compression of the refrigerant is provided by a standing wave compressor. The standing wave compressor is modified so as to provide a separate subcooling system for the refrigerant, so that efficiency losses due to flashing are reduced. Subcooling occurs when heat exchange is provided between the refrigerant and a heat pumping surface, which is exposed to the standing acoustic wave within the standing wave compressor. A variable capacity and variable discharge pressure for the standing wave compressor is provided. A control circuit simultaneously varies the capacity and discharge pressure in response to changing operating conditions, thereby maintaining the minimum discharge pressure needed for condensation to occur at any time. Thus, the power consumption of the standing wave compressor is reduced and system efficiency is improved.

  2. Probabilistic Aerothermal Design of Compressor Airfoils Victor E. Garzon

    E-Print Network [OSTI]

    Peraire, Jaime

    and operating condition uncertainty on axial compressor performance. High-fidelity models of geometric-line multi-stage axial compressor model was used to estimate the impact of geometric variability on overall compressor performance. Probabilistic loss and turning models were exercised on a six-stage compressor model

  3. Controlled Source Frequency-Domain Electromagnetics At Neal Hot...

    Open Energy Info (EERE)

    2012 Colorado School of Mines and Imperial College London (2011) Geophysical Characterization of a Geothermal System Neal Hot Springs, Oregon, USA Additional References...

  4. Vertical Electrical Sounding Configurations At Mt Princeton Hot...

    Open Energy Info (EERE)

    Vertical Electrical Sounding Configurations At Mt Princeton Hot Springs Geothermal Area (Zohdy, Et Al., 1971) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home...

  5. Compressor ported shroud for foil bearing cooling

    DOE Patents [OSTI]

    Elpern, David G. (Los Angeles, CA); McCabe, Niall (Torrance, CA); Gee, Mark (South Pasadena, CA)

    2011-08-02

    A compressor ported shroud takes compressed air from the shroud of the compressor before it is completely compressed and delivers it to foil bearings. The compressed air has a lower pressure and temperature than compressed outlet air. The lower temperature of the air means that less air needs to be bled off from the compressor to cool the foil bearings. This increases the overall system efficiency due to the reduced mass flow requirements of the lower temperature air. By taking the air at a lower pressure, less work is lost compressing the bearing cooling air.

  6. Spring 2015 Thermodynamics -2

    E-Print Network [OSTI]

    Virginia Tech

    Spring 2015 Thermodynamics - 2 As indicated in the adjacent figure, a steady- flow cogeneration: recirculating hot water and electricity. Steam flows at 200 kg/s into the cogeneration plant at 5 bar to the factory. b. [30 pts] Determine the rate of entropy production within the cogeneration plant. The plant

  7. Robust design and tolerancing of compressor blades

    E-Print Network [OSTI]

    Dow, Eric Alexander

    2015-01-01

    Variations in the geometry of compressor blades can be introduced by variability in the manufacturing process or by in-service erosion. Recent research efforts have focused on characterizing the impacts of this geometric ...

  8. Method and apparatus for starting supersonic compressors

    DOE Patents [OSTI]

    Lawlor, Shawn P

    2013-08-06

    A supersonic gas compressor with bleed gas collectors, and a method of starting the compressor. The compressor includes aerodynamic duct(s) situated for rotary movement in a casing. The aerodynamic duct(s) generate a plurality of oblique shock waves for efficiently compressing a gas at supersonic conditions. A convergent inlet is provided adjacent to a bleed gas collector, and during startup of the compressor, bypass gas is removed from the convergent inlet via the bleed gas collector, to enable supersonic shock stabilization. Once the oblique shocks are stabilized at a selected inlet relative Mach number and pressure ratio, the bleed of bypass gas from the convergent inlet via the bypass gas collectors is effectively eliminated.

  9. Probabilistic analysis of meanline compressor rotor performance

    E-Print Network [OSTI]

    Fitzgerald, Nathan Andrew, 1980-

    2004-01-01

    This thesis addresses variability in aerodynamic performance of a compressor rotor due to geometric variation. The performance of the rotor is computed using a meanline model that includes the effect of tip clearance ...

  10. Cycling Losses During Screw Air Compressor Operationá

    E-Print Network [OSTI]

    Maxwell, J. B.; Wheeler, G.; Bushnell, D.

    1995-01-01

    Air compressors use 10-13 % of a typical industrial facilities' total electricity. Because they often operate at part load, their part load efficiency significantly affects plant energy cost. An intensive study of screw ...

  11. Probabilistic aerothermal design of compressor airfoils

    E-Print Network [OSTI]

    Garzˇn, VÝctor E., 1972-

    2003-01-01

    Despite the generally accepted notion that geometric variability is undesirable in turbomachinery airfoils, little is known in detail about its impact on aerothermal compressor performance. In this work, statistical and ...

  12. A methodology for centrifugal compressor stability prediction

    E-Print Network [OSTI]

    Benneke, Bj÷rn

    2009-01-01

    The stable operation of centrifugal compressors is limited by well-known phenomena, rotating stall and surge. Although the manifestation of the full scale instabilities is similar to the ones observed in axial machines, ...

  13. Improved return passages for multistage centrifugal compressors

    E-Print Network [OSTI]

    Glass, Benjamin W., S.M. Massachusetts Institute of Technology

    2010-01-01

    This thesis presents a design concept for return passages in multistage centrifugal compressors. Flow in a baseline return passage is analyzed to identify loss sources that have substantial potential for reduction. For the ...

  14. Hydrogen pipeline compressors annual progress report.

    SciTech Connect (OSTI)

    Fenske, G. R.; Erck, R. A.

    2011-07-15

    The objectives are: (1) develop advanced materials and coatings for hydrogen pipeline compressors; (2) achieve greater reliability, greater efficiency, and lower capital in vestment and maintenance costs in hydrogen pipeline compressors; and (3) research existing and novel hydrogen compression technologies that can improve reliability, eliminate contamination, and reduce cost. Compressors are critical components used in the production and delivery of hydrogen. Current reciprocating compressors used for pipeline delivery of hydrogen are costly, are subject to excessive wear, have poor reliability, and often require the use of lubricants that can contaminate the hydrogen (used in fuel cells). Duplicate compressors may be required to assure availability. The primary objective of this project is to identify, and develop as required, advanced materials and coatings that can achieve the friction, wear, and reliability requirements for dynamically loaded components (seal and bearings) in high-temperature, high-pressure hydrogen environments prototypical of pipeline and forecourt compressor systems. The DOE Strategic Directions for Hydrogen Delivery Workshop identified critical needs in the development of advanced hydrogen compressors - notably, the need to minimize moving parts and to address wear through new designs (centrifugal, linear, guided rotor, and electrochemical) and improved compressor materials. The DOE is supporting several compressor design studies on hydrogen pipeline compression specifically addressing oil-free designs that demonstrate compression in the 0-500 psig to 800-1200 psig range with significant improvements in efficiency, contamination, and reliability/durability. One of the designs by Mohawk Innovative Technologies Inc. (MiTi{reg_sign}) involves using oil-free foil bearings and seals in a centrifual compressor, and MiTi{reg_sign} identified the development of bearings, seals, and oil-free tribological coatings as crucial to the successful development of an advanced compressor. MiTi{reg_sign} and ANL have developed potential coatings for these rigorous applications; however, the performance of these coatings (as well as the nickel-alloy substrates) in high-temperature, high-speed hydrogen environments is unknown at this point.

  15. RELAP5-3D Compressor Model

    SciTech Connect (OSTI)

    James E. Fisher; Cliff B. Davis; Walter L. Weaver

    2005-06-01

    A compressor model has been implemented in the RELAP5-3Dę code. The model is similar to that of the existing pump model, and performs the same function on a gas as the pump performs on a single-phase or two-phase fluid. The compressor component consists of an inlet junction and a control volume, and optionally, an outlet junction. This feature permits cascading compressor components in series. The equations describing the physics of the compressor are derived from first principles. These equations are used to obtain the head, the torque, and the energy dissipation. Compressor performance is specified using a map, specific to the design of the machine, in terms of the ratio of outlet-to-inlet total (or stagnation) pressure and adiabatic efficiency as functions of rotational velocity and flow rate. The input quantities are specified in terms of dimensionless variables, which are corrected to stagnation density and stagnation sound speed. A small correction was formulated for the input of efficiency to account for the error introduced by assumption of constant density when integrating the momentum equation. Comparison of the results of steady-state operation of the compressor model to those of the MIT design calculation showed excellent agreement for both pressure ratio and power.

  16. Conceptual Model At Valles Caldera - Sulphur Springs Geothermal...

    Open Energy Info (EERE)

    temperature gradient, hydrogeochemical, hydrologic, and geologic data from 10 geothermal test wells and several hot springs were integrated to model the Valles caldera...

  17. Heat pump system with hot water defrost

    SciTech Connect (OSTI)

    Dudley, K.F.

    1988-08-30

    This patent describes an integrated heat pump and hot water system that includes, a heat pump having an indoor heat exchanger unit and an outdoor heat exchanger unit that are selectively connected to a compressor inlet and a compressor outlet by a flow reversing means and to each other by a flow reversing means and to each other by a refrigerant liquid line containing a bi-flow expansion valve for metering refrigerant moving in either direction through the liquid line, and bi-flow expansion valve having a positive shut off means to prevent refrigerant from flowing therethrough, a refrigerant to water heat exchanger having a water flow circuit that is in heat transfer relation with a first refrigerant condensing circuit and a second refrigerant evaporating circuit. The refrigerant condensing circuit is connected into a discharge line connecting the outlet of the compressor to the reversing means whereby all the refrigerant discharged by the compressor passes through the condensing circuit. The refrigerant evaporating circuit is connected at one end to the inlet of the compressor and at the other end to an evaporator line that is operatively joined to the liquid line at a point between the bi-flow expansion valve and the outdoor heat exchanger, a metering valve in the evaporator line that is selectively movable between a first closed position whereby refrigerant is prevented from moving through the evaporator line and an open position whereby refrigerant is throttled from the liquid line into the evaporator circuit.

  18. Xergy Ships First Breakthrough Water Heater Compressor to GE...

    Energy Savers [EERE]

    Xergy Ships First Breakthrough Water Heater Compressor to GE Xergy Ships First Breakthrough Water Heater Compressor to GE September 15, 2015 - 3:41pm Addthis Xergy Inc. and GE...

  19. Impact of geometric variability on compressor repeating-stage performance

    E-Print Network [OSTI]

    Vincent, Antoine, 1979-

    2003-01-01

    The impact of geometric variability on compressor performance is investigated using a compressor repeating-stage model based on well-known correlations for profile losses, endwall blockage, deviation, and the onset of ...

  20. Aerodynamic performance measurements in a counter-rotating aspirated compressor

    E-Print Network [OSTI]

    OnnÚe, Jean-Franšois

    2005-01-01

    This thesis is an experimental investigation of the aerodynamic performances of a counter-rotating aspirated compressor. This compressor is implemented in a blow-down facility, which gives rigorous simulation of the ...

  1. Development of a body force model for centrifugal compressors

    E-Print Network [OSTI]

    Kottapalli, Anjaney Pramod

    2013-01-01

    This project is focused on modeling the internal ow in centrifugal compressors for the purpose of assessing the onset of rotating stall and surge. The current methods to determine centrifugal compressor stability limits ...

  2. Compressor airfoil tip clearance optimization system

    DOE Patents [OSTI]

    Little, David A.; Pu, Zhengxiang

    2015-08-18

    A compressor airfoil tip clearance optimization system for reducing a gap between a tip of a compressor airfoil and a radially adjacent component of a turbine engine is disclosed. The turbine engine may include ID and OD flowpath boundaries configured to minimize compressor airfoil tip clearances during turbine engine operation in cooperation with one or more clearance reduction systems that are configured to move the rotor assembly axially to reduce tip clearance. The configurations of the ID and OD flowpath boundaries enhance the effectiveness of the axial movement of the rotor assembly, which includes movement of the ID flowpath boundary. During operation of the turbine engine, the rotor assembly may be moved axially to increase the efficiency of the turbine engine.

  3. Active surge control of centrifugal compressors using drive torque

    E-Print Network [OSTI]

    Gravdahl, Jan Tommy

    Active surge control of centrifugal compressors using drive torque Jan Tommy Gravdahl , Olav control is presented. A centrifugal compressor driven by an electrical motor is studied, and the drive of centrifugal com- pressors, which occurs when the operating point of the compressor is located to the left

  4. Method and apparatus for starting supersonic compressors

    DOE Patents [OSTI]

    Lawlor, Shawn P. (Bellevue, WA)

    2012-04-10

    A supersonic gas compressor. The compressor includes aerodynamic duct(s) situated on a rotor journaled in a casing. The aerodynamic duct(s) generate a plurality of oblique shock waves for efficiently compressing a gas at supersonic conditions. The convergent inlet is adjacent to a bleed air collector, and during acceleration of the rotor, bypass gas is removed from the convergent inlet via a collector to enable supersonic shock stabilization. Once the oblique shocks are stabilized at a selected inlet relative Mach number and pressure ratio, the bleed of bypass gas from the convergent inlet via the bypass gas collectors is eliminated.

  5. Floating Loop System For Cooling Integrated Motors And Inverters Using Hot Liquid Refrigerant

    DOE Patents [OSTI]

    Hsu, John S [Oak Ridge, TN; Ayers, Curtis W [Kingston, TN; Coomer, Chester [Knoxville, TN; Marlino, Laura D [Oak Ridge, TN

    2006-02-07

    A floating loop vehicle component cooling and air-conditioning system having at least one compressor for compressing cool vapor refrigerant into hot vapor refrigerant; at least one condenser for condensing the hot vapor refrigerant into hot liquid refrigerant by exchanging heat with outdoor air; at least one floating loop component cooling device for evaporating the hot liquid refrigerant into hot vapor refrigerant; at least one expansion device for expanding the hot liquid refrigerant into cool liquid refrigerant; at least one air conditioning evaporator for evaporating the cool liquid refrigerant into cool vapor refrigerant by exchanging heat with indoor air; and piping for interconnecting components of the cooling and air conditioning system.

  6. Master Control of Multiple Air Compressorsá

    E-Print Network [OSTI]

    Petzold, M. A.

    1983-01-01

    of air compressors in the most efficient manner for any air demand. This system can be further enhanced by the addition of a remote set point signal based on air-flow. This signal is calibrated to reduce the set-point during periods of low demand when...

  7. Geothermal Energy in Iceland Spring 2009

    E-Print Network [OSTI]

    Prevedouros, Panos D.

    and volcanoes The steam flows through pipesThe steam flows through pipes to the power plants, turning turbines the "smokey" steam from hot springs 1755-1756: First wells for hot water in Reykjavik and Krisuvik 1907: Farmer conveyed steam through concrete pipe to heat home 1920s: First boreholes drilled for water to heat

  8. DC Resistivity Survey (Dipole-Dipole Array) At Mt Princeton Hot...

    Open Energy Info (EERE)

    1971) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: DC Resistivity Survey (Dipole-Dipole Array) At Mt Princeton Hot Springs Geothermal Area...

  9. Dynamically balanced, hydraulically driven compressor/pump apparatus for resonant free piston Stirling engines

    DOE Patents [OSTI]

    Corey, John A. (North Troy, NY)

    1984-05-29

    A compressor, pump, or alternator apparatus is designed for use with a resonant free piston Stirling engine so as to isolate apparatus fluid from the periodically pressurized working fluid of the Stirling engine. The apparatus housing has a first side closed by a power coupling flexible diaphragm (the engine working member) and a second side closed by a flexible diaphragm gas spring. A reciprocally movable piston is disposed in a transverse cylinder in the housing and moves substantially at right angles relative to the flexible diaphragms. An incompressible fluid fills the housing which is divided into two separate chambers by suitable ports. One chamber provides fluid coupling between the power diaphragm of the RFPSE and the piston and the second chamber provides fluid coupling between the gas spring diaphragm and the opposite side of the piston. The working members of a gas compressor, pump, or alternator are driven by the piston. Sealing and wearing parts of the apparatus are mounted at the external ends of the transverse cylinder in a double acting arrangement for accessibility. An annular counterweight is mounted externally of the reciprocally movable piston and is driven by incompressible fluid coupling in a direction opposite to the piston so as to damp out transverse vibrations.

  10. Combined cold compressor/ejector helium refrigerator

    DOE Patents [OSTI]

    Brown, D.P.

    1984-06-05

    A refrigeration apparatus having an ejector operatively connected with a cold compressor to form a two-stage pumping system. This pumping system is used to lower the pressure, and thereby the temperature of a bath of boiling refrigerant (helium). The apparatus as thus arranged and operated has substantially improved operating efficiency when compared to other processes or arrangements for achieving a similar low pressure.

  11. Viscous throughflow modeling for multistage compressor design

    SciTech Connect (OSTI)

    Howard, M.A.; Gallimore, S.J. )

    1993-04-01

    An existing throughflow method for axial compressors, which accounts for the effects of spanwise mixing using a turbulent diffusion model, has been extended to include the viscous shear force on the endwall. The use of a shear force, consistent with a no-slip condition, on the annulus walls in the throughflow calculations allows realistic predictions of the velocity and flow angle profiles near the endwalls. The annulus wall boundary layers are therefore incorporated directly into the throughflow prediction. This eliminates the need for empirical blockage factors or independent annulus boundary layer calculations. The axisymmetric prediction can be further refined by specifying realistic spanwise variations of loss coefficient and deviation to model the three-dimensional endwall effects. The resulting throughflow calculation gives realistic predictions of flow properties across the whole span of a compressor. This is confirmed by comparison with measured data from both low and high-speed multistage machines. The viscous throughflow method has been incorporated into an axial compressor design system. The method predicts the meridional velocity defects in the endwall region and consequently blading can be designed that allows for the increased incidence, and low dynamic head, near the annulus walls.

  12. METAL HYDRIDE HYDROGEN COMPRESSORS: A REVIEW

    SciTech Connect (OSTI)

    Bowman Jr, Robert C; Yartys, Dr. Volodymyr A.; Lototskyy, Dr. Michael V; Pollet, Dr. B.G.

    2014-01-01

    Metal hydride (MH) thermal sorption compression is an efficient and reliable method allowing a conversion of energy from heat into a compressed hydrogen gas. The most important component of such a thermal engine the metal hydride material itself should possess several material features in order to achieve an efficient performance in the hydrogen compression. Apart from the hydrogen storage characteristics important for every solid H storage material (e.g. gravimetric and volumetric efficiency of H storage, hydrogen sorption kinetics and effective thermal conductivity), the thermodynamics of the metal-hydrogen systems is of primary importance resulting in a temperature dependence of the absorption/desorption pressures). Several specific features should be optimized to govern the performance of the MH-compressors including synchronisation of the pressure plateaus for multi-stage compressors, reduction of slope of the isotherms and hysteresis, increase of cycling stability and life time, together with challenges in system design associated with volume expansion of the metal matrix during the hydrogenation. The present review summarises numerous papers and patent literature dealing with MH hydrogen compression technology. The review considers (a) fundamental aspects of materials development with a focus on structure and phase equilibria in the metal-hydrogen systems suitable for the hydrogen compression; and (b) applied aspects, including their consideration from the applied thermodynamic viewpoint, system design features and performances of the metal hydride compressors and major applications.

  13. IEMDC - In-Line Electric Motor Driven Compressor

    SciTech Connect (OSTI)

    Michael J. Crowley

    2004-03-31

    This report covers the fifth quarter (01/01/04 to 03/31/04) of the In-Line Electric Motor Driven Compressor (IEMDC) project. Design efforts on the IEMDC continued with compressor efforts focused on performing aerodynamic analyses. These analyses were conducted using computational fluid dynamics. Compressor efforts also entailed developing mechanical designs of components through the use of solid models and working on project deliverables. Electric motor efforts focused on the design of the magnetic bearing system, motor pressure housing, and the motor-compressor interface. The mechanical evaluation of the main interface from both the perspective of the compressor manufacturer and electric motor manufacturer indicates that an acceptable design has been achieved. All mechanical and aerodynamic design efforts have resulted in considerable progress being made towards the completion of the compressor and electric motor design and towards the successful completion of the IEMDC unit.

  14. Effect of Intake Air on Compressor Performance; Industrial Technologie...

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

    4 * August 2004 Industrial Technologies Program Suggested Actions * Inspect the entry to the compressor air intake pipe and ensure that it is free of contaminants. * Inspect the...

  15. New Compressor Concept Improves Efficiency and Operation Range

    Broader source: Energy.gov [DOE]

    Advanced turbocharger compressor design with active casing treatment and advanced mixed flow turbine design provided improved performance and efficiency over the base turbocharger

  16. Critical speed measurements in the Tevatron cold compressors

    SciTech Connect (OSTI)

    DeGraff, B.; Bossert, R.; Martinez, A.; Soyars, W.M.; /Fermilab

    2006-01-01

    The Fermilab Tevatron cryogenic system utilizes high-speed centrifugal cold compressors, manufactured by Ishikawajima-Harima Heavy Industries Co. Ltd. (IHI), for high energy operations. Nominal operating range for these compressors is 43,000 to 85,000 rpm. Past foil bearing failures prompted investigation to determine if critical speeds for operating compressors fall within operating range. Data acquisition hardware and software settings will be discussed for measuring liftoff, first critical and second critical speeds. Several tests provided comparisons between an optical displacement probe and accelerometer measurements. Vibration data and analysis of the 20 Tevatron ring cold compressors will be presented.

  17. The unstable behavior of low and high-speed compressors

    SciTech Connect (OSTI)

    Day, I.J. . Whittle Lab.); Freeman, C. )

    1994-04-01

    By far the greater part of the understanding about stall and surge in axial compressors comes from work on low-speed laboratory machines. As a general rule, these machines do not model the compressibility effects present in high-speed compressors and therefore doubt has always existed about the application of low-speed results to high-speed machines. In recent years interest in active control has led to a number of studies of compressor stability in engine-type compressors. The instrumentation used in these experiments has been sufficiently detailed that, for the first time, adequate data are available to make direct comparisons between high-speed and low-speed compressors. This paper presents new data from an eight-stage fixed geometry engine compressor and compares then with low-speed laboratory data. The results show remarkable similarities in both the stalling and surging behavior of the two machines, particularly when the engine compressor is run at intermediate speeds. The engine results also show that, as in the laboratory tests, surge is precipitated by the onset of rotating stall. This is true even at very high speeds where it had previously been thought that surge might be the result of a blast wave moving through the compressor. This paper therefore contains new information about high-speed compressors and confirms that low-speed testing is an effective means of obtaining insight into the behavior of high-speed machines.

  18. Gaseous Emissions From Steamboat Springs, Brady'S Hot Springs...

    Open Energy Info (EERE)

    systems, characterize their lateral extent, or map the trends of concealed geologic structures that may provide important reservoir permeability at depth. Gaseous geochemical...

  19. Salida Hot Springs (Poncha Spring) Space Heating Low Temperature Geothermal

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onRAPID/Geothermal/Exploration/ColoradoRemsenburg-Speonk,Sage Resources Jump to:Ohio: Energy Resources JumpSales

  20. Gaseous Emissions From Steamboat Springs, Brady'S Hot Springs, And Desert

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButtePowerEdistoWhiskeyFootprintGEXA Corp. (Delaware)GalvestonWindSampling

  1. Paleomagnetic Measurements At Roosevelt Hot Springs Geothermal...

    Open Energy Info (EERE)

    Area. References S. H. Ward, W. T. Parry, W. P. Nash, W. R. Sill, K. L. Cook, R. B. Smith, D. S. Chapman, F. H. Brown, J. A. Whelan, J. R. Bowman (1978) A Summary of the...

  2. Colorado's Hot Springs | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar EnergyLawler,Coal TechnologiesClio Power

  3. Chena Hot Springs | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmentalBowerbank,CammackFLIR JumpMaine: EnergyEnergyEnergy Information

  4. Exploration model for possible geothermal reservoir, Coso Hot...

    Open Energy Info (EERE)

    reservoir exists at Coso Hot Springs KGRA, as proposed by Combs and Jarzabek (1977). Gravity data collected by the USGS (Isherwood and Plouff, 1978) was plotted and compared with...

  5. Hot Pot Field Observations

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Lane, Michael

    2013-06-28

    Map of field observations including depressions, springs, evidence of former springs, travertine terraces and vegetation patterns. Map also contains interpretation of possible spring alignments.

  6. Hot Pot Field Observations

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Lane, Michael

    Map of field observations including depressions, springs, evidence of former springs, travertine terraces and vegetation patterns. Map also contains interpretation of possible spring alignments.

  7. FEASIBILITY OF SOLAR-FIRED, COMPRESSOR-ASSISTED

    E-Print Network [OSTI]

    FEASIBILITY OF SOLAR-FIRED, COMPRESSOR-ASSISTED ABSORPTION CHILLERS Prepared For: California Energy REPORT (FAR) FEASIBILITY OF SOLAR FIRED, COMPRESSOR ASSISTED ABSORPTION CHILLERS EISG AWARDEE Bergquam.csus.edu Principal Investigator: James Bergquam AUTHOR EISG Program Administrator Grant #: 99-15 Grant Funding: $75

  8. POWER CHARACTERISTICS OF INDUSTRIAL AIR COMPRESSORS Chris Schmidt

    E-Print Network [OSTI]

    Kissock, Kelly

    POWER CHARACTERISTICS OF INDUSTRIAL AIR COMPRESSORS Chris Schmidt Graduate Assistant / Project of Mechanical and Aerospace Engineering University of Dayton Dayton, Ohio ABSTRACT The power draw to energy input, which we call the average operating efficiency, based on input power to the compressor

  9. Introducing Back-up to Active Compressor Surge Control System

    E-Print Network [OSTI]

    Gravdahl, Jan Tommy

    to compressor blades and bearings. Most industrial compressors are equipped with a surge avoidance system by recycling flow from downstream to upstream when the operating point reach a surge control line Jager This work was supported Siemens Oil and Gas Solutions Offshore through the Siemens

  10. Modeling and Control of Surge and Rotating Stall in Compressors

    E-Print Network [OSTI]

    Gravdahl, Jan Tommy

    Modeling and Control of Surge and Rotating Stall in Compressors Dr.ing. thesis Jan Tommy Gravdahl varying disturbances in mass ow and pressure. A novel model for an axial compression system with non-constant compressor speed is derived by extending the Moore-Greitzer model. Rotating stall and surge is studied

  11. Small core axial compressors for high efficiency jet aircraft

    E-Print Network [OSTI]

    DiOrio, Austin Graf

    2012-01-01

    This thesis quantifies mechanisms that limit efficiency in small core axial compressors, defined here as compressor exit corrected flow between 1.5 and 3.0 lbm/s. The first part of the thesis describes why a small engine ...

  12. Drive actuation in active control of centrifugal compressors Jan Tommy Gravdahl and Olav Egeland

    E-Print Network [OSTI]

    Gravdahl, Jan Tommy

    Pipeline compressor map for natural gas (=1.3) System trajectory Throttle line Surge line Compressor map does not cross this line. Usually a recycle valve around the compressor is used as actuation. A simulation of active surge control on a industrial size nat- ural gas pipeline compressor using drive torque

  13. Surge recovery techniques for the Tevatron cold compressors

    SciTech Connect (OSTI)

    Martinez, A.; Klebaner, A.L.; Makara, J.N.; Theilacker, J.C.; /Fermilab

    2006-01-01

    The Fermilab Tevatron cryogenic system utilizes high-speed centrifugal cold compressors, made by Ishikawajima-Harima Heavy Industries Co. Ltd. (IHI), for high-energy operations [1]. The compressor is designed to pump 60 g/s of 3.6 K saturated helium vapor at a pressure ratio of 2.8, with an off-design range of 40 to 70 g/s and operating speeds between 40 and 95 krpm. Since initial commissioning in 1993, Tevatron transient conditions such as quench recovery have led to multiple-location machine trips as a result of the cold compressors entering the surge regime. Historically, compressors operating at lower inlet pressures and higher speeds have been especially susceptible to these machine trips and it was not uncommon to have multiple compressor trips during large multiple-house quenches. In order to cope with these events and limit accelerator down time, surge recovery techniques have been implemented in an attempt to prevent the compressors from tripping once the machine entered this surge regime. This paper discusses the different methods of surge recovery that have been employed. Data from tests performed at the Cryogenic Test Facility at Fermilab as well as actual Tevatron operational data were utilized. In order to aid in the determination of the surge region, a full mapping study was undertaken to characterize the entire pressure field of the cold compressor. These techniques were then implemented and tested at several locations in the Tevatron with some success.

  14. Pressure field study of the Tevatron cold compressors

    SciTech Connect (OSTI)

    Klebaner, A.L.; Martinez, A.; Soyars, W.M.; Theilacker, J.C.; /Fermilab

    2003-01-01

    The Fermilab Tevatron cryogenic system utilizes high-speed centrifugal cold compressors, manufactured by Ishikawajima-Harima Heavy Industries Co. Ltd. (IHI), for high-energy operations [1]. The compressor is designed to pump 60 g/sec of 3.6 K saturated helium vapor at a pressure ratio of 2.8, with an off-design range of 40 to 70 g/sec. Operating speeds are between 40 and 95 krpm, with a speed of 80 krpm at the design point. Different heat loads and magnet quench performance of each of the twenty-four satellite refrigerators dictates different process pressure and flow rates of the cold compressors. Reducing the process flow rate can cause the centrifugal cold compressor to stop pumping and subsequently surge. Tests have been conducted at the Cryogenic Test Facility at Fermilab to map the pressure field and appropriate efficiency of the IHI hydrodynamic cold compressor. The information allows tuning of each of the twenty-four Tevatron satellite refrigerators to avoid cold compressor operation near the surge and choke lines. A new impeller has also been tested. The Tevatron cold compressor pressure field and efficiency data with the new impeller are presented in this paper.

  15. Hot Canyon

    ScienceCinema (OSTI)

    None

    2013-03-01

    This historical film footage, originally produced in the early 1950s as part of a series by WOI-TV, shows atomic research at Ames Laboratory. The work was conducted in a special area of the Laboratory known as the "Hot Canyon."

  16. Simultaneous Robust Design and Tolerancing of Compressor Blades

    E-Print Network [OSTI]

    Wang, Qiqi

    The manufacturing processes used to create compressor blades inevitably introduce geometric variability to the blade surface. In addition to increasing the performance variability, it has been observed that introducing ...

  17. Characterization of unsteady flow processes in a centrifugal compressor stage

    E-Print Network [OSTI]

    Gould, Kenneth A. (Kenneth Arthur)

    2006-01-01

    Numerical experiments have been implemented to characterize the unsteady loading on the rotating impeller blades in a modem centrifugal compressor. These consist of unsteady Reynolds-averaged Navier Stokes simulations of ...

  18. Forced response predictions in modern centrifugal compressor design

    E-Print Network [OSTI]

    Smythe, Caitlin J. (Caitlin Jeanne)

    2005-01-01

    A computational interrogation of the time-averaged and time-unsteady flow fields of two centrifugal compressors of nearly identical design (the enhanced, which encountered aeromechanical difficulty, and production, which ...

  19. Return channel loss reduction in multi-stage centrifugal compressors

    E-Print Network [OSTI]

    Aubry, Anne-RaphaŰlle

    2012-01-01

    This thesis presents concepts for improving the performance of return channels in multi-stage centrifugal compressors. Geometries have been developed to reduce both separation and viscous losses. A number of different ...

  20. Multi-parameter control for centrifugal compressor performance optimization

    E-Print Network [OSTI]

    Mannai, SÚbastien (SÚbastien Karim)

    2014-01-01

    The potential performance benefit of actuating inlet guide vane (IGV) angle, variable diffuser vane (VDV) angle and impeller speed to implement a multi-parameter control on a centrifugal compressor system is assessed. The ...

  1. New Twin Screw Compressor Design by Deviation Function Method

    E-Print Network [OSTI]

    Huang, Chih-Yung

    2015-01-01

    Gear Geometry," Transaction of ASME: Journal of Mechanical Design,Gear Pump," Trans. ASME Journal of Mechanisms, and Transmissions, and Automation in Design,design is an oil-free compressor and is driven by a pair of timing gears.

  2. Energy conversion using thermal transpiration : optimization of a Knudsen compressor

    E-Print Network [OSTI]

    Klein, Toby A. (Toby Anna)

    2012-01-01

    Knudsen compressors are devices without any moving parts that use the nanoscale phenomenon of thermal transpiration to pump or compress a gas. Thermal transpiration takes place when a gas is in contact with a solid boundary ...

  3. Active control of tip clearance flow in axial compressors

    E-Print Network [OSTI]

    Bae, Jinwoo W

    2001-01-01

    Control of compressor tip clearance flows is explored in a linear cascade using three types of fluidic actuators; Normal Synthetic Jet (NSJ; unsteady jet normal to the mean flow with zero net mass flux), Directed Synthetic ...

  4. Non-intrusive fault detection in reciprocating compressors

    E-Print Network [OSTI]

    Schantz, Christopher James

    2011-01-01

    This thesis presents a set of techniques for non-intrusive sensing and fault detection in reciprocating compressors driven by induction motors. The procedures developed here are "non-intrusive" because they rely only on ...

  5. Development Of A Centrifugal Hydrogen Pipeline Gas Compressor

    SciTech Connect (OSTI)

    Di Bella, Francis A.

    2015-04-16

    Concepts NREC (CN) has completed a Department of Energy (DOE) sponsored project to analyze, design, and fabricate a pipeline capacity hydrogen compressor. The pipeline compressor is a critical component in the DOE strategy to provide sufficient quantities of hydrogen to support the expected shift in transportation fuels from liquid and natural gas to hydrogen. The hydrogen would be generated by renewable energy (solar, wind, and perhaps even tidal or ocean), and would be electrolyzed from water. The hydrogen would then be transported to the population centers in the U.S., where fuel-cell vehicles are expected to become popular and necessary to relieve dependency on fossil fuels. The specifications for the required pipeline hydrogen compressor indicates a need for a small package that is efficient, less costly, and more reliable than what is available in the form of a multi-cylinder, reciprocating (positive displacement) compressor for compressing hydrogen in the gas industry.

  6. Control optimization of the cryoplant warm compressor station for EAST

    SciTech Connect (OSTI)

    Zhuang, M.; Hu, L. B.; Zhou, Z. W.; Xia, G. H. [Cryogenic Engineering Division, Institute of Plasma Physics Chinese Academy of Sciences, P.O.Box 1126,Shushanhu Road 350, Hefei, Anhui 230031 (China)

    2014-01-29

    The cryogenic control system for EAST (Experimental Advanced Superconducting Tokamak) was designed based on DeltaV DCS of Emerson Corporation. The automatic control of the cryoplant warm compressors has been implemented. However, with ever-degrading performance of critical equipment, the cryoplant operation in the partial design conditions makes the control system fluctuate and unstable. In this paper, the warm compressor control system was optimized to eliminate the pressure oscillation based on the expert PID theory.

  7. Hyper dispersion pulse compressor for chirped pulse amplification systems

    DOE Patents [OSTI]

    Barty, Christopher P. J. (Hayward, CA)

    2011-11-29

    A grating pulse compressor configuration is introduced for increasing the optical dispersion for a given footprint and to make practical the application for chirped pulse amplification (CPA) to quasi-narrow bandwidth materials, such as Nd:YAG. The grating configurations often use cascaded pairs of gratings to increase angular dispersion an order of magnitude or more. Increased angular dispersion allows for decreased grating separation and a smaller compressor footprint.

  8. Development of Inexpensive Turbo Compressor/Expanders for Industrial Useá

    E-Print Network [OSTI]

    Jacox, J. W.

    1991-01-01

    designed, coordinated and partially performed by NUCON. The turbocharger consists of a radial inflow turbine and a centrifugal compressor mounted on a common shaft supported on oil lubricated floating bushing type journal bearings. The axial thrust.... The TCE performance was not as serious a problem, except to achieve both high and matched efficiency for the expander AND compressor when operated in the reverse mode. Locating a cost effective mass produced TCE was the most difficult of the three...

  9. ADVANCED COMPRESSOR ENGINE CONTROLS TO ENHANCE OPERATION, RELIABILITY AND INTEGRITY

    SciTech Connect (OSTI)

    Gary D. Bourn; Jess W. Gingrich; Jack A. Smith

    2004-03-01

    This document is the final report for the ''Advanced Compressor Engine Controls to Enhance Operation, Reliability, and Integrity'' project. SwRI conducted this project for DOE in conjunction with Cooper Compression, under DOE contract number DE-FC26-03NT41859. This report addresses an investigation of engine controls for integral compressor engines and the development of control strategies that implement closed-loop NOX emissions feedback.

  10. An analytical model of axial compressor off-design performance

    SciTech Connect (OSTI)

    Camp, T.R.; Horlock, J.H. . Whittle Lab.)

    1994-07-01

    An analysis is presented of the off-design performance of multistage axial-flow compressors. It is based on an analytical solution, valid for small perturbations in operating conditions from the design point, and provides an insight into the effects of choices made during the compressor design process on performance and off-design stage matching. It is shown that the mean design value of stage loading coefficient ([psi] = [Delta]h[sub 0]/U[sup 2]) has a dominant effect on off-design performance, whereas the stage-wise distribution of stage loading coefficient and the design value of flow coefficient have little influence. The powerful effects of variable stator vanes on stage-matching are also demonstrated and these results are shown to agree well with previous work. The slope of the working line of a gas turbine engine, overlaid on overall compressor characteristics, is shown to have a strong effect on the off-design stage-matching through the compressor. The model is also used to analyze design changes to the compressor geometry and to show how errors in estimates of annulus blockage, decided during the design process, have less effect on compressor performance than has previously been thought.

  11. Development of an Electrochemical Separator and Compressor

    SciTech Connect (OSTI)

    Trent Molter

    2011-04-28

    Global conversion to sustainable energy is likely to result in a hydrogen-based economy that supports U.S. energy security objectives while simultaneously avoiding harmful carbon emissions. A key hurdle to successful implementation of a hydrogen economy is the low-cost generation, storage, and distribution of hydrogen. One of the most difficult requirements of this transformation is achieving economical, high density hydrogen storage in passenger vehicles. Transportation applications may require compression and storage of high purity hydrogen up to 12,000 psi. Hydrogen production choices range from centralized low-pressure generation of relatively impure gas in large quantities from steam-methane reformer plants to distributed generation of hydrogen under moderate pressure using water electrolysis. The Electrochemical Hydrogen Separator + Compressor (EHS+C) technology separates hydrogen from impurities and then compresses it to high pressure without any moving parts. The Phase I effort resulted in the construction and demonstration of a laboratory-scale hardware that can separate and compress hydrogen from reformate streams. The completion of Phase I has demonstrated at the laboratory scale the efficient separation and compression of hydrogen in a cost effective manner. This was achieved by optimizing the design of the Electrochemical Hydrogen Compression (EHC) cell hardware and verified by parametric testing in single cell hardware. A broad range of commercial applications exist for reclamation of hydrogen. One use this technology would be in combination with commercial fuel cells resulting in a source of clean power, heat, and compressed hydrogen. Other applications include the reclamation of hydrogen from power plants and other industrial equipment where it is used for cooling, recovery of process hydrogen from heat treating processes, and semiconductor fabrication lines. Hydrogen can also be recovered from reformate streams and cryogenic boil-offs using this technology.

  12. Design and operation of a counter-rotating aspirated compressor blowdown test facility

    E-Print Network [OSTI]

    Parker, David V. (David Vickery)

    2005-01-01

    A unique counter-rotating aspirated compressor was tested in a blowdown facility at the Gas Turbine Laboratory at MIT. The facility expanded on experience from previous blowdown turbine and blowdown compressor experiments. ...

  13. Application of a design optimization strategy to multi-stage compressor matching

    E-Print Network [OSTI]

    Bert, JÚr˘me

    2006-01-01

    A major challenge in the design of multi-stage compressors is the matching of stages to enable stable operation over a large range of mass flows and operating conditions. Particularly in turbofan low-pressure compressors, ...

  14. Optimal dimensionless design and analysis of jet ejectors as compressors and thrust augmentersá

    E-Print Network [OSTI]

    Mohan, Ganesh

    2006-08-16

    A jet ejector may be used as a compressor or to enhance thrust of watercraft or aircraft. Optimization of jet ejectors as compressors and thrust augmenters was conducted using the software GAMBIT (Computer Aided Engineering (CAE) tool for geometry...

  15. Turbo-alternator-compressor design for supercritical high density working fluids

    DOE Patents [OSTI]

    Wright, Steven A.; Fuller, Robert L.

    2013-03-19

    Techniques for generating power are provided. Such techniques involve a thermodynamic system including a housing, a turbine positioned in a turbine cavity of the housing, a compressor positioned in a compressor cavity of the housing, and an alternator positioned in a rotor cavity between the turbine and compressor cavities. The compressor has a high-pressure face facing an inlet of the compressor cavity and a low-pressure face on an opposite side thereof. The alternator has a rotor shaft operatively connected to the turbine and compressor, and is supported in the housing by bearings. Ridges extending from the low-pressure face of the compressor may be provided for balancing thrust across the compressor. Seals may be positioned about the alternator for selectively leaking fluid into the rotor cavity to reduce the temperature therein.

  16. Hot dry rock venture risks investigation:

    SciTech Connect (OSTI)

    Not Available

    1988-01-01

    This study assesses a promising resource in central Utah as the potential site of a future commerical hot dry rock (HDR) facility for generating electricity. The results indicate that, if the HDR reservoir productivity equals expectations based on preliminary results from research projects to date, a 50 MWe HDR power facility at Roosevelt Hot Springs could generate power at cost competitive with coal-fired plants. However, it is imperative that the assumed productivity be demonstrated before funds are committed for a commercial facility. 72 refs., 39 figs., 38 tabs.

  17. Investigation of Non-synchronous Vibration Mechanism for a High Speed Axial Compressor Using Delayed DES

    E-Print Network [OSTI]

    Zha, Gecheng

    Investigation of Non-synchronous Vibration Mechanism for a High Speed Axial Compressor Using compressor. DDES is a hybrid model for turbulence simulation, which uses RANS model within the wall boundary a torsion moment causing NSV. 1 Introduction Non-synchronous vibration of axial fan/compressor is a non

  18. A Moore-Greitzer axial compressor model with spool Jan Tommy Gravdahl and Olav Egeland

    E-Print Network [OSTI]

    Gravdahl, Jan Tommy

    A Moore-Greitzer axial compressor model with spool dynamics. Jan Tommy Gravdahl and Olav Egeland applies to centrifugal compressors. It seems that the modeling and control of an axial com- pression) Table 1: Development in compressor stall/surge- control. A=Axial, C=Centrifugal, M=Modeling, C

  19. Test results on a supercharged compressor for commercial refrigeration

    SciTech Connect (OSTI)

    Andrews, J.W.; Butcher, T.A.; Wilhelm, W.G. )

    1989-01-01

    This paper reports on a project whose objective was to quantify the technical benefits of using refrigerant R-502 in a supercharged reciprocating compressor for commercial refrigeration applications. The supercharged compressor concept used a special heat exchanger that subcools the major portion of the liquid refrigerant leaving the condenser. This subcooling is achieved by flashing the remaining portion of the condensed liquid through an expansion valve, thereby cooling it, and using it to absorb heat from the rest of the refrigerant. This supercharged stream is then fed to the cylinders through ports in the cylinder walls that are uncovered when the piston reaches bottom dead center.

  20. High-current, low-energy synchrotrons and compressor rings

    SciTech Connect (OSTI)

    Kustom, R.L.

    1984-05-01

    The primary application of high-current, low-energy synchrotrons and linac compressor rings is as proton drivers for pulsed-spallation neutron sources. They operate in the range of 500 to 1500 MeV with extracted beam repetition rates between 12 to 100 Hz. The time-averaged currents on target are a few tens of microamperes today, soon will be a few thousand in the future. The characteristics for the accelerators and compressor rings, their limitations, and existing and proposed major facilities are described. 22 references, 5 figures, 6 tables.

  1. U.S. Geothermal Announces More Test Results from the Neal Hot...

    Open Energy Info (EERE)

    U.S. Geothermal Announces More Test Results from the Neal Hot Springs Production Well and a Key Addition to Senior Staff Jump to: navigation, search OpenEI Reference LibraryAdd to...

  2. Dipole-dipole resistivity survey of a portion of the Coso Hot...

    Open Energy Info (EERE)

    was completed at the Coso Hot Springs KGRA in September 1977. This survey has defined a bedrock resistivity low at least 4 sq mi (10 sq km) in extent associated with the...

  3. Compressor Selection and Equipment Sizing for Cold Climate Heat Pumps

    SciTech Connect (OSTI)

    Shen, Bo [ORNL] [ORNL; Abdelaziz, Omar [ORNL] [ORNL; Rice, C Keith [ORNL] [ORNL

    2014-01-01

    In order to limit heating capacity degradation at -25 C (-13 F) ambient to 25%, compared to the nominal rating point capacity at 8.3 C (47 F), an extensive array of design and sizing options were investigated, based on fundamental equipment system modeling and building energy simulation. Sixteen equipment design options were evaluated in one commercial building and one residential building, respectively in seven cities. The energy simulation results were compared to three baseline cases: 100% electric resistance heating, a 9.6 HSPF single-speed heat pump unit, and 90% AFUE gas heating system. The general recommendation is that variable-speed compressors and tandem compressors, sized such that their rated heating capacity at a low speed matching the building design cooling load, are able to achieve the capacity goal at low ambient temperatures by over-speeding, for example, a home with a 3.0 ton design cooling load, a tandem heat pump could meet this cooling load running a single compressor, while running both compressors to meet heating load at low ambient temperatures in a cold climate. Energy savings and electric resistance heat reductions vary with building types, energy codes and climate zones. Oversizing a heat pump can result in larger energy saving in a less energy efficient building and colder regions due to reducing electric resistance heating. However, in a more energy-efficient building or for buildings in warmer climates, one has to consider balance between reduction of resistance heat and addition of cyclic loss.

  4. Scroll compressor modelling for heat pumps using hydrocarbons as refrigerants

    E-Print Network [OSTI]

    Paris-Sud XI, UniversitÚ de

    1 Scroll compressor modelling for heat pumps using hydrocarbons as refrigerants Paul BYRNE and to install heat pumps in unoccupied spaces. Nevertheless manufacturers keep working on components for hydrocarbons. In the frame of a research project on heat pumps for simultaneous heating and cooling, an R407C

  5. Speed and surge control for a low order centrifugal compressor model Jan Tommy Gravdahl and Olav Egeland

    E-Print Network [OSTI]

    Gravdahl, Jan Tommy

    a model for axial compressor mass ow and pressure rise was presented. In 13] it was shown that the modelSpeed and surge control for a low order centrifugal compressor model Jan Tommy Gravdahl and Olav of the compressor. First a low order centrifugal compressor model is presented where the states are mass ow

  6. 83-9E9-TOPIC-P3 Unrestricted DOMslon ManagerHIGH-EFFICIENCY DUAL-STROKE COMPRESSOR

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    , two-capacity,.three cylinder, reciprocating piston, hermetic compressor for the advanced electric heat-pump

  7. Spring in Sacramento

    E-Print Network [OSTI]

    Fields, Wesley

    2005-01-01

    41 LETTERS Spring in Sacramento Wesley Fields, MD, FACEPIt is spring again in Sacramento. The fruit trees are inthe rivers that meet in Sacramento. Returning to the capitol

  8. IEMDC -IN-LINE ELECTRIC MOTOR DRIVEN COMPRESSOR

    SciTech Connect (OSTI)

    Michael J. Crowley; Prem N. Bansal; John E. Tessaro

    2004-01-01

    Dresser-Rand completed the preliminary aerodynamic flowpath of the volute and inlet design for the compressor section. This has resulted in considerable progress being made on the development of the compressor section and ultimately towards the successful integration of the IEMDC System design. Significant effort was put forth in the design of aerodynamic components which resulted in a design that meets the limits of aerodynamically induced radial forces previously established. Substantial effort has begun on the mechanical design of the compressor pressure containing case and other internal components. These efforts show progression towards the successful integration of a centrifugal compressor and variable speed electric motor ventilated by the process gas. All efforts continue to confirm the feasibility of the IEMDC system design. During the third quarter reporting period, the focus was to further refine the motor design and to ensure that the IEMDC rotor system supported on magnetic bearing is in compliance with the critical speed and vibration requirements of the API standards 617 and 541. Consequently specification to design magnetic bearings was developed and an RFQ to three magnetic bearing suppliers was issued. Considerable work was also performed to complete preliminary reports on some of the deliverable tasks under phase 1.0. These include specification for the VFD, RFQ for the magnetic bearings, and preliminary write-up for motor instrumentation and control schematic. In order to estimate motor efficiency at various operating points, plots of calculated motor losses, and motor cooling gas flow rates were also prepared. Preliminary evaluations of motor support concepts were performed via FEA to determine modal frequencies. Presentation was made at DOE Morgantown on August 12, 2003 to provide project status update. Preparations for the IEMDC motor-compressor presentation, at the GMRC conference in Salt Lake City to be held on October 5, 2003, were also started. Detailed calculations of cooling gas flow requirements for the motor and magnetic bearings, per several new operating points designated by DR, confirmed that the required gas flow was within the compressor design guidelines. Previous thrust load calculations had confirmed that the magnetic thrust bearing design load capacity of 6,000 lb. was sufficient to handle the net thrust load produced by the motor and compressor pressure loading. Thus the design data that has been generated, for the variable speed 10 MW 12,000 rpm motor, during the last three quarters, continue to confirm the feasibility of an efficient and robust motor design.

  9. Compressor and Hot Section Fouling in Gas Turbines- Causes and Effectsá

    E-Print Network [OSTI]

    Meher-Homji, C. B.

    1987-01-01

    .04' - 4.'5 - 300 0,01 - , 0.1 ~ , 0.1 - '0 0.1 - I~JI I - (5001 2 0.1 - 10 0.1 - '0 0.1 lSOOI S"lt fiLTER : INTAI(E DEPRESSION \\ 'HANOHETER HiCJh i1r... . low Ar". As .irfloY rilt. drops, Y.~ocit.. dropsrI ------4) th...

  10. IEMDC IN-LINE ELECTRIC MOTOR DRIVEN COMPRESSOR

    SciTech Connect (OSTI)

    Michael J. Crowley; Prem N. Bansal

    2004-10-01

    This report contains the final project summary and deliverables required by the award for the development of an In-line Electric Motor Driven Compressor (IEMDC). Extensive work was undertaken during the course of the project to develop the motor and the compressor section of the IEMDC unit. Multiple design iterations were performed to design an electric motor for operation in a natural gas environment and to successfully integrate the motor with a compressor. During the project execution, many challenges were successfully overcome in order to achieve the project goals and to maintain the system design integrity. Some of the challenges included limiting the magnitude of the compressor aerodynamic loading for appropriate sizing of the magnetic bearings, achieving a compact motor rotor size to meet the rotor dynamic requirements of API standards, devising a motor cooling scheme using high pressure natural gas, minimizing the impact of cooling on system efficiency, and balancing the system thrust loads for the magnetic thrust bearing. Design methods that were used on the project included validated state-of-the-art techniques such as finite element analysis and computational fluid dynamics along with the combined expertise of both Curtiss-Wright Electro-Mechanical Corporation and Dresser-Rand Company. One of the most significant areas of work undertaken on the project was the development of the unit configuration for the system. Determining the configuration of the unit was a significant step in achieving integration of the electric motor into a totally enclosed compression system. Product review of the IEMDC unit configuration was performed during the course of the development process; this led to an alternate design configuration. The alternate configuration is a modular design with the electric motor and compressor section each being primarily contained in its own pressure containing case. This new concept resolved the previous conflict between the aerodynamic flow passage requirements and electric motor requirements for support and utilities by bounding the flowpath within the compressor section. However most importantly, the benefits delivered by the new design remained the same as those proposed by the goals of the project. In addition, this alternate configuration resulted in the achievement of a few additional advantages over the original concept such as easier maintenance, operation, and installation. Interaction and feedback solicited from target clients regarding the unit configuration supports the fact that the design addresses industry issues regarding accessibility, maintainability, preferred operating practice, and increased reliability.

  11. High Technology Centrifugal Compressor for Commercial Air Conditioning Systems

    SciTech Connect (OSTI)

    Ruckes, John

    2006-04-15

    R&D Dynamics, Bloomfield, CT in partnership with the State of Connecticut has been developing a high technology, oil-free, energy-efficient centrifugal compressor called CENVA for commercial air conditioning systems under a program funded by the US Department of Energy. The CENVA compressor applies the foil bearing technology used in all modern aircraft, civil and military, air conditioning systems. The CENVA compressor will enhance the efficiency of water and air cooled chillers, packaged roof top units, and other air conditioning systems by providing an 18% reduction in energy consumption in the unit capacity range of 25 to 350 tons of refrigeration The technical approach for CENVA involved the design and development of a high-speed, oil-free foil gas bearing-supported two-stage centrifugal compressor, CENVA encompassed the following high technologies, which are not currently utilized in commercial air conditioning systems: Foil gas bearings operating in HFC-134a; Efficient centrifugal impellers and diffusers; High speed motors and drives; and System integration of above technologies. Extensive design, development and testing efforts were carried out. Significant accomplishments achieved under this program are: (1) A total of 26 builds and over 200 tests were successfully completed with successively improved designs; (2) Use of foil gas bearings in refrigerant R134a was successfully proven; (3) A high speed, high power permanent magnet motor was developed; (4) An encoder was used for signal feedback between motor and controller. Due to temperature limitations of the encoder, the compressor could not operate at higher speed and in turn at higher pressure. In order to alleviate this problem a unique sensorless controller was developed; (5) This controller has successfully been tested as stand alone; however, it has not yet been integrated and tested as a system; (6) The compressor successfully operated at water cooled condensing temperatures Due to temperature limitations of the encoder, it could not be operated at air cooled condensing temperatures. (7) The two-stage impellers/diffusers worked well separately but combined did not match well.

  12. Chemical and isotopic composition of water from thermal and mineral springs of Washington

    SciTech Connect (OSTI)

    Mariner, R.H.; Presser, T.S.; Evans, W.C.

    1982-02-01

    Waters from the thermal springs of Washington range in chemical composition from dilute Na-HCO/sub 3/ to moderately saline CO/sub 2/-charged Na-HCO/sub 3/-Cl type waters. St. Martin's Hot Spring which discharges a slightly saline Na-Cl water, is the notable exception. The dilute Na-HCO/sub 3/ waters are generally associated with granitic intrusions; the warm to hot CO/sub 2/-charged waters issue on or near the large stratovolcanoes. The dilute waters have oxygen-isotopic compositions that indicate relatively little water-rock exchange. The CO/sub 2/-charged waters are usually more enriched in oxygen-18 due to more extensive water-rock reaction. The carbon-13 in the CO/sub 2/-charged thermal waters is more depleted (-10 to -12 %) than in the cold CO/sub 2/-charged soda springs (-2 to -8%) which are also scattered throughout the Cascades. The hot and cold CO/sub 2/-charged waters are supersaturated with respect to CaCO/sub 3/, but only the hot springs are actively depositing CaCO/sub 3/. Baker, Gamma, Sulphur, and Ohanapecosh hot springs seem to be associated with thermal aquifers of more than 100/sup 0/C. As these springs occur as individual springs or in small clusters, the respective aquifers are probably of restricted size.

  13. Linear Gain for the Microbunching Instability in an RF Compressor

    SciTech Connect (OSTI)

    Venturini, M.; Migliorati, M.; Ronsivalle, C.; Vaccarezza, C.

    2009-05-01

    Velocity (or rf) compression has been suggested as a technique for bunch compression complementary to the more established technique involving magnetic chicanes and represents an important research item being investigated at the SPARC test facility. One of the aspects of this technique still not sufficiently understood is its possible impact on the microbunching instability. The purpose of this report is to present the analytical framework for investigating this instability in rf compressors. We use methods similar to those successfully applied to magnetic compressors and derive some integral equations yielding the gain for the instability in linear approximation. The focus here is on the derivation of the relevant equations. Although examples of solutions to these equations are provided we defer a more comprehensive discussion of their implication to a future report. The present study is part of a larger effort for a more comprehensive investigation that eventually will include macroparticle simulations and experiments.

  14. IEMDC-IN-LINE ELECTRIC MOTOR DRIVEN COMPRESSOR

    SciTech Connect (OSTI)

    Michael J. Crowley; Prem N. Bansal; John E. Tessaro

    2003-06-01

    During this reporting period, significant progress has been made towards the development of the IEMDC System design. Considerable effort was put forth by Curtiss-Wright EMD in the resolution of the technical issue of aerodynamically induced radial forces. This has provided a design basis with which to establish the radial magnetic bearing load capacity and the rotordynamic design. Dresser-Rand has made considerable progress on the flowpath design for the compressor section particularly on the volute and inlet aerodynamic design. All efforts show progression towards the successful integration of a centrifugal compressor and variable speed electric motor ventilated by the process gas. These efforts continue to confirm the feasibility of the IEMDC system design.

  15. Quasi-Optical 34-GHz Rf Pulse Compressor

    SciTech Connect (OSTI)

    Hirshfield, Jay L

    2007-06-19

    Designs have been carried out on non-high-vacuum, low-power versions of three- and four-mirror quasi-optical passive and active Ka-band pulse compressors, and prototypes built and tested based on these designs. The active element is a quasi-optical grating employing gas discharge tubes in the gratings. Power gains of about 3:1 were observed experimentally for the passive designs, and about 7:1 with the active designs. High-power, high-vacuum versions of the three-and four-mirror quasi-optical pulse compressors were built and tested at low power. These now await installation and testing using multi-MW power from the 34-GHz magnicon.

  16. RF modulation studies on the S band pulse compressor

    E-Print Network [OSTI]

    Shu, G; Pei, S; Xiao, O

    2015-01-01

    An S band SLED-type pulse compressor has been manufactured by IHEP to challenge the 100 MW maximum input power, which means the output peak power is about 500 MW at the phase reversal time. In order to deal with the RF breakdown problem, the dual side-wall coupling irises model was used. To further improve the reliability at very high power, amplitude modulation and phase modulation with flat-top output were taken into account. The RF modulation studies on an S-band SLED are presented in this paper. Furthermore, a method is developed by using the CST Microwave Studio transient solver to simulate the time response of the pulse compressor, which can be a verification of the modulate theory. In addition, the experimental setup was constructed and the flat-top output is obtained in the low power tests.

  17. RF modulation studies on the S band pulse compressor

    E-Print Network [OSTI]

    G. Shu; F. Zhao; S. Pei; O. Xiao

    2015-05-28

    An S band SLED-type pulse compressor has been manufactured by IHEP to challenge the 100 MW maximum input power, which means the output peak power is about 500 MW at the phase reversal time. In order to deal with the RF breakdown problem, the dual side-wall coupling irises model was used. To further improve the reliability at very high power, amplitude modulation and phase modulation with flat-top output were taken into account. The RF modulation studies on an S-band SLED are presented in this paper. Furthermore, a method is developed by using the CST Microwave Studio transient solver to simulate the time response of the pulse compressor, which can be a verification of the modulate theory. In addition, the experimental setup was constructed and the flat-top output is obtained in the low power tests.

  18. Plasma Switch for High-Power Active Pulse Compressor

    SciTech Connect (OSTI)

    Hirshfield, Jay L. [Omega-P, Inc.] [Omega-P, Inc.

    2013-11-04

    Results are presented from experiments carried out at the Naval Research Laboratory X-band magnicon facility on a two-channel X-band active RF pulse compressor that employed plasma switches. Experimental evidence is shown to validate the basic goals of the project, which include: simultaneous firing of plasma switches in both channels of the RF circuit, operation of quasi-optical 3-dB hybrid directional coupler coherent superposition of RF compressed pulses from both channels, and operation of the X-band magnicon directly in the RF pulse compressor. For incident 1.2 ?s pulses in the range 0.63 ? 1.35 MW, compressed pulses of peak powers 5.7 ? 11.3 MW were obtained, corresponding to peak power gain ratios of 8.3 ? 9.3. Insufficient bakeout and conditioning of the high-power RF circuit prevented experiments from being conducted at higher RF input power levels.

  19. Heat powered refrigeration compressor. Semi-annual technical report

    SciTech Connect (OSTI)

    Goad, R.R.

    1981-01-01

    The objective of this program is to develop and improve the design of previously started prototypes of the Heat Powered Refrigeration Compressor. To build this prototype and ready it for testing by the University of Evansville is another goal. This prototype will be of similar capacity as the compressor that will eventually be commercially produced. This unit can operate on almost any moderate temperature water heat source. This heat source could include such applications as industrial waste heat, solar, wood burning stove, resistance electrical heat produced by a windmill, or even perhaps heat put out by the condenser of another refrigeration system. Work performed in the past four months has consisted of: engineering of HX-1; comparisons of specifications from different companies to ensure state of the art applications of parts for project; coordinating project requirements with machine shop; designing condenser; and partial assembly of HX-1.

  20. Turbine inter-disk cavity cooling air compressor

    DOE Patents [OSTI]

    Little, David Allen (Oviedo, FL)

    2001-01-01

    A combustion turbine may have a cooling circuit for directing a cooling medium through the combustion turbine to cool various components of the combustion turbine. This cooling circuit may include a compressor, a combustor shell and a component of the combustion turbine to be cooled. This component may be a rotating blade of the combustion turbine. A pressure changing mechanism is disposed in the combustion turbine between the component to be cooled and the combustor shell. The cooling medium preferably flows from the compressor to the combustor shell, through a cooler, the component to the cooled and the pressure changing mechanism. After flowing through the pressure changing mechanism, the cooling medium is returned to the combustor shell. The pressure changing mechanism preferably changes the pressure of the cooling medium from a pressure at which it is exhausted from the component to be cooled to approximately that of the combustor shell.

  1. Downhole steam generator having a downhole oxidant compressor

    DOE Patents [OSTI]

    Fox, R.L.

    1981-01-07

    Am improved apparatus is described for the downhole injection of steam into boreholes, for tertiary oil recovery. It includes an oxidant supply, a fuel supply, an igniter, a water supply, an oxidant compressor, and a combustor assembly. The apparatus is designed for efficiency, preheating of the water, and cooling of the combustion chamber walls. The steam outlet to the borehole is provided with pressure-responsive doors for closing the outlet in response to flameout. (DLC)

  2. Screw Type Steam Compressors for Mechanical Vapor Recompression (MVR) Systemsá

    E-Print Network [OSTI]

    Kawamura, K.; Apaloo, Thomas-L.

    1986-01-01

    hand, is not affected by such problem. No special mist separator is required and, at the same time, the wet or saturated vapor compression is possible, and does not affect the efficiency of the SSHP. (3) Stability of performance for a wide... COMPRESSORS FOR MECHANICAL VAPOR RECOMPRESSION (MVR) SYSTEMS K. KAWAMURA AND THOMAS-L. APALOO MYCOM CORPORATION, LOS ANGELES, CALIFORNIA MATSUDA, MAYEKAWA MFG. CO., TOKYO, JAPAN ABSTRACT In processes of evaporation, distillation or drying, steam...

  3. RDG 351-Spring 2015 Texas A&M University Central Texas

    E-Print Network [OSTI]

    Diestel, Geoff

    RDG 351-Spring 2015 Texas A&M University Central Texas RDG 351.110-Content Area Reading Spring 2015.lake@hot.rr.com Office Hours: Appointment UNILERT Emergency Warning System for Texas A&M University ş Central Texas UNILERT is an emergency notification service that gives Texas A

  4. ECOLE THEMATIQUE CNRS SPRING SCHOOL Plouzan 11 14 May 2010 Iceland in the Central Northern Atlantic

    E-Print Network [OSTI]

    Huck, Thierry

    #12;ECOLE THEMATIQUE ş CNRS ş SPRING SCHOOL ş PlouzanÚ ş 11 ş14 May 2010 Iceland in the Central Northern Atlantic 2 #12;ECOLE THEMATIQUE ş CNRS ş SPRING SCHOOL ş PlouzanÚ ş 11 ş14 May 2010 Iceland COMMUNICATIONS Recent and present-day tectonics near a hot spot : the transform zones of Iceland 12 J÷kylhlaups

  5. Modeling shrouded stator cavity flows in axial-flow compressors

    SciTech Connect (OSTI)

    Wellborn, S.R.; Tolchinsky, I.; Okiishi, T.H.

    2000-01-01

    Experiments and computational analyses were completed to understand the nature of shrouded stator cavity flows. From this understanding, a one-dimensional model of the flow through shrouded stator cavities was developed. This model estimates the leakage mass flow, temperature rise, and angular momentum increase through the cavity, given geometry parameters and the flow conditions at the interface between the cavity and primary flow path. This cavity model consists of two components, one that estimates the flow characteristics through the labyrinth seals and the other that predicts the transfer of momentum due to windage. A description of the one-dimensional model is given. The incorporation and use of the one-dimensional model in a multistage compressor primary flow analysis tool is described. The combination of this model and the primary flow solver was used to reliably simulate the significant impact on performance of the increase of hub seal leakage in a twelve-stage axial-flow compressor. Observed higher temperatures of the hub region fluid, different stage matching, and lower overall efficiencies and core flow than expected could be correctly linked to increased hub seal clearance with this new technique. The importance of including these leakage flows in compressor simulations is shown.

  6. A new endwall model for axial compressor throughflow calculations

    SciTech Connect (OSTI)

    Dunham, J.

    1995-10-01

    It is well recognized that the endwall regions of a compressor--in which the annulus wall flow interacts with the mainstream flow--have a major influence on its efficiency and surge margin. Despite many attempts over the years to predict the very complex flow patterns in the endwall regions, current compressor design methods still rely largely on empirical estimates of the aerodynamic losses and flow angle deviations in these regions. This paper describes a new phenomenological model of the key endwall flow phenomena treated in a circumferentially averaged way. It starts from Hirsch and de Ruyck`s annulus wall boundary layer approach, but makes some important changes. The secondary vorticities arising from passage secondary flows and from tip clearance flows are calculated. Then the radial interchanges of momentum, energy, and entropy arising from both diffusion and convection are estimated. The model is incorporated into a streamline curvature program. The empirical blade force defect terms in the boundary layers are selected from cascade data. The effectiveness of the method is illustrated by comparing the predictions with experimental results on both low-speed and high-speed multistage compressors. It is found that the radial variation of flow parameters is quite well predicted, and so is the overall performance, except when significant endwall stall occurs.

  7. An analysis of axial compressor fouling and a blade cleaning method

    SciTech Connect (OSTI)

    Tarabrin, A.P.; Schurovsky, V.A.; Bodrov, A.I.; Stalder, J.P.

    1998-04-01

    The paper describes the phenomenon of axial compressor fouling due to aerosols contained in the air. Key parameters having effect on the level of fouling are determined. A mathematical model of a progressive compressor fouling using the stage-by-stage calculation method is developed. Calculation results on the influence of fouling on the compressor performance are presented. A new index of sensitivity of axial compressors to fouling is suggested. The paper gives information about Turbotect`s deposit cleaning method of compressor blading and the results of its application on an operating industrial gas turbine. Regular on-line and off-line washings of the compressor flow path made it possible to maintain a high level of engine efficiency and output.

  8. Simulating Energy Efficient Control of Multiple-Compressor Compressed Air Systemsá

    E-Print Network [OSTI]

    Murphy, S.

    2015-01-01

    with multiple compressors contain greater opportunity for controls optimization. The three main types of multiple- compressor control strategies which will be discussed in this paper are: pressure band control, network sequencer control, and automatic..., the basic principles and control algorithms are detailed for pressure band control, network sequencer control, and automatic sequencer control strategies for multiple-compressor compressed air systems. Finally, a case study is presented demonstrating...

  9. Dual capacity compressor with reversible motor and controls arrangement therefor

    DOE Patents [OSTI]

    Sisk, Francis J. (Washington Township, Fayette County, PA)

    1980-12-02

    A hermetic reciprocating compressor such as may be used in heat pump applications is provided for dual capacity operation by providing the crankpin of the crankshaft with an eccentric ring rotatably mounted thereon, and with the end of the connecting rod opposite the piston encompassing the outer circumference of the eccentric ring, with means limiting the rotation of the eccentric ring upon the crankpin between one end point and an opposite angularly displaced end point to provide different values of eccentricity depending upon which end point the eccentric ring is rotated to upon the crankpin, and a reversible motor in the hermetic shell of the compressor for rotating the crankshaft, the motor operating in one direction effecting the angular displacement of the eccentric ring relative to the crankpin to the one end point, and in the opposite direction effecting the angular displacement of the eccentric ring relative to the crankpin to the opposite end point, this arrangement automatically giving different stroke lengths depending upon the direction of motor rotation. The mechanical structure of the arrangement may take various forms including at least one in which any impact of reversal is reduced by utilizing lubricant passages and chambers at the interface area of the crankpin and eccentric ring to provide a dashpot effect. In the main intended application of the arrangement according to the invention, that is, in a refrigerating or air conditioning system, it is desirable to insure a delay during reversal of the direction of compressor operation. A control arrangement is provided in which the control system controls the direction of motor operation in accordance with temperature conditions, the system including control means for effecting operation in a low capacity direction or alternatively in a high capacity direction in response to one set, and another set, respectively, of temperature conditions and with timer means delaying a restart of the compressor motor for at least a predetermined time in response to a condition of the control means operative to initiate a change in the operating direction of the compressor when it restarts.

  10. Rotor dynamic analysis of GCEP (Gas Centrifuge Enrichment Plant) Tails Withdrawal Test Facility AC-12 compressor

    SciTech Connect (OSTI)

    Spencer, J.W.

    1982-01-22

    The reliable operation of the centrifugal compressors utilized in the gaseous diffusion process is of great importance due to the critical function of these machines in product and tails withdrawal, cascade purge and evacuation processes, the purge cascade and product booster applications. The same compressors will be used in equally important applications within the Gas Centrifuge Enrichment Plant (GCEP). In response to concern over the excessive vibration exhibited by the AC-12 compressor in the No. 3 position of the GCEP Tails Withdrawal Test Facility, a rotor-bearing dynamic analysis was performed on the compressor. This analysis included the acquisition and reduction of compressor vibration data, characterization and modeling of the rotorbearing system, a computer dynamic study, and recommendations for machine modification. The compressor dynamic analysis was performed for rotor speeds of 9000 rpm and 7200 to 7800 rpm, which includes all possible opreating speeds of the compressor in the GCEP Test Facility. While the analysis was performed on this particular AC-12 compressor, the results should be pertinent to other AC-12 applications as well. Similar diagnostic and analytical techniques can be used to evaluate operation of other types of centrifugal compressors.

  11. Dynamic Optimization in Gas Pipeline Networks EWO MEETING, Spring 2012

    E-Print Network [OSTI]

    Grossmann, Ignacio E.

    , consumers and compressor stations Compressor Stations Processing Plants Customers 3 Suppliers: Continuous flow of gas into network. Customers: Chemical industries, Power plants, Residential/commercial heating: Flow demands must be satisfied at a contract pressure. Compressor Stations: Compression of gas

  12. Background review on compressors for gas engine-driven heat pumps. Technical report, September 1985-March 1986

    SciTech Connect (OSTI)

    Hall, R.L.; Swain, J.C.

    1986-04-01

    The investigation focused on the efficiency and durability of various types of open-shaft compressors for potential application to residential and light commercial gas-engine-driven heat-pump applications. Variable speed efficiency data for hermetic, semihermetic, and open shaft compressors were obtained from the public literature and from compressor manufacturers in the US, Japan, and in Europe. Efficiency comparisons based upon refrigerants R12 and R22 at a fixed compressor pressure ratio indicate that reciprocating compressors have the highest coefficients of performance (COP's) for compressor speeds ranging from 1000 to 2500 rpm. Scroll and Wankel compressors appear to offer the highest COP's above 2500 rpm. An important finding of the work is that open shaft compressors with proven life and reliability for residential gas engine heat-pump applications do not appear to be available as production units.

  13. Three-dimensional flow visualization in a centrifugal compressorá

    E-Print Network [OSTI]

    Trevillion, William Lee

    1976-01-01

    of this boundary layer problem should enable designers to design compressors with higher efficiencies and larger surge-to-stall margins. Wiesner Stodola Busemann Eck 0. 9 B 0 m 0. 8 pfleiderer Senoo a Nakase ~ ~ 0. 7 ~ Experimental results 0. 6 0... increase during its flow through the impeller. The outer diameter of the rotor, D , was designed to be 7. 00 inches with an exit blade height, b2, of 0. 50 inches. The hub and blades were machined from aluminum and polished to aid observation...

  14. Passivity based compressor surge control using a close-coupled valve

    E-Print Network [OSTI]

    Gravdahl, Jan Tommy

    Passivity based compressor surge control using a close-coupled valve Jan Tommy Gravdahl and Olav-coupled valve. The analysis shows that the system has certain passivity properties which leads to a simple controller for the close- coupled valve. 1 Introduction If the ow through a compressor is throttled

  15. Design of a Free Piston Pneumatic Compressor as a Mobile Robot Power Supply

    E-Print Network [OSTI]

    Barth, Eric J.

    technology is intended to provide a compact pneumatic power supply source appropriate for human-scale robotsDesign of a Free Piston Pneumatic Compressor as a Mobile Robot Power Supply Jose A. Riofrio.j.barth@vanderbilt.edu Abstract ş The design of a free piston compressor (FPC) intended as a pneumatic power supply

  16. 1275, Page 1 ANALYSIS AND DEVELOPMENT OF A TURBIVO COMPRESSOR FOR MVR

    E-Print Network [OSTI]

    Paris-Sud XI, UniversitÚ de

    dryers is the use of a compressor with high efficiency in an open cycle and at high evaporating development issue. Typical clothe dryers consume 750 Wh/kg of dry clothes. Dryers with thermodynamic cycle can-stage configuration for high flow rate and high compression power (> 100 kW) [2]. Volumetric compressors are divided

  17. High Fidelity Modeling of Blade Row Interaction in a Transonic Compressor

    E-Print Network [OSTI]

    Cincinnati, University of

    High Fidelity Modeling of Blade Row Interaction in a Transonic Compressor Michael G. List on the compressor. Three dierent axial spacings between the rotor and the upstream blade row have been simulated of Cincinnati, Cincinnati, OH, 45221 In order to accurately model the physics associated with losses

  18. A Model of Compressor Blade Row Interaction with Shock Induced Vortex Shedding

    E-Print Network [OSTI]

    Cincinnati, University of

    A Model of Compressor Blade Row Interaction with Shock Induced Vortex Shedding Mark G. Turner". The mid and far spacings represent typical axial gaps found in operational fans and compressors. However behind a stator are modeled. The model is based on a Burger vortex core model for shed vortices

  19. Performance Testing of Jefferson Lab 12 GeV Helium Screw Compressors

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Knudsen, P.; Ganni, V.; Dixon, K.; Norton, R.; Creel, J.

    2015-08-10

    Oil injected screw compressors have essentially superseded all other types of compressors in modern helium refrigeration systems due to their large displacement capacity, reliability, minimal vibration, and capability of handling helium's high heat of compression. At the present state of compressor system designs for helium refrigeration systems, typically two-thirds of the lost input power is due to the compression system. It is important to understand the isothermal and volumetric efficiencies of these machines to help properly design the compression system to match the refrigeration process. It is also important to identify those primary compressor skid exergetic loss mechanisms which maymoreá╗be reduced, thereby offering the possibility of significantly reducing the input power to helium refrigeration processes which are extremely energy intensive. This paper summarizes the results collected during the commissioning of the new compressor system for Jefferson Lab's (JLab's) 12 GeV upgrade. The compressor skid packages were designed by JLab and built to print by industry. They incorporate a number of modifications not typical of helium screw compressor packages and most importantly allow a very wide range of operation so that JLab's patented Floating Pressure Process can be fully utilized. This paper also summarizes key features of the skid design that allow this process and facilitate the maintenance and reliability of these helium compressor systems.źáless

  20. Testing and modeling of compressors for low-lift cooling applications

    E-Print Network [OSTI]

    Willingham, Ryan Alexander

    2009-01-01

    In this thesis, an inverter-driven variable speed scroll compressor is tested on a de-superheater test stand to determine its performance in areas of low-lift and low compressor speed. The goal is to adapt this test stand ...

  1. Bunch Compressor for the TESLA Linear Collider W. Decking, G. Hoffstaetter, T. Limberg

    E-Print Network [OSTI]

    Hoffstaetter, Georg

    Bunch Compressor for the TESLA Linear Collider W. Decking, G. Hoffstaetter, T. Limberg DESY, Notkestra▀e 85, 22603 Hamburg, Germany September 2000 Abstract TESLA-2000-40 (2000) We discuss different bunch compression systems for the TESLA collider. The best alternative is a wiggler type compressor, where we list

  2. 2009-32-0176/20097176 Miniature HCCI Free-Piston Engine Compressor

    E-Print Network [OSTI]

    Durfee, William K.

    -cycle combustion is used. Free-piston engine compressor Accumulator Rotary actuator #12;SETC2009 ComparedSETC2009 2009-32-0176/20097176 Miniature HCCI Free-Piston Engine Compressor For Orthosis Application Lei Tian, David B. Kittelson, William K. Durfee Mechanical Engineering, University of Minnesota

  3. IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, VOL. 7, NO. 5, SEPTEMBER 1999 567 Centrifugal Compressor Surge and Speed Control

    E-Print Network [OSTI]

    Gravdahl, Jan Tommy

    IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, VOL. 7, NO. 5, SEPTEMBER 1999 567 Centrifugal of the compressor. First a low-order centrifugal compressor model is presented where the states are mass flow] showed that it is also applicable to centrifugal compressors. The model has two states, normalized mass

  4. Performance analysis of a series of hermetic reciprocating compressors working with R290 (propane) and R407C

    E-Print Network [OSTI]

    Fernßndez de Cˇrdoba, Pedro

    Performance analysis of a series of hermetic reciprocating compressors working with R290 (propane with propane as refrigerant are analyzed in terms of the compressor model developed by [E. Navarro, E. Granryd. In addition, a comparison study between propane and R407C was carried out for one compressor and the observed

  5. Compressor discharge bleed air circuit in gas turbine plants and related method

    DOE Patents [OSTI]

    Anand, Ashok Kumar (Niskayuna, NY); Berrahou, Philip Fadhel (Latham, NY); Jandrisevits, Michael (Clifton Park, NY)

    2002-01-01

    A gas turbine system that includes a compressor, a turbine component and a load, wherein fuel and compressor discharge bleed air are supplied to a combustor and gaseous products of combustion are introduced into the turbine component and subsequently exhausted to atmosphere. A compressor discharge bleed air circuit removes bleed air from the compressor and supplies one portion of the bleed air to the combustor and another portion of the compressor discharge bleed air to an exhaust stack of the turbine component in a single cycle system, or to a heat recovery steam generator in a combined cycle system. In both systems, the bleed air diverted from the combustor may be expanded in an air expander to reduce pressure upstream of the exhaust stack or heat recovery steam generator.

  6. Compressor discharge bleed air circuit in gas turbine plants and related method

    DOE Patents [OSTI]

    Anand, Ashok Kumar (Niskayuna, NY); Berrahou, Philip Fadhel (Latham, NY); Jandrisevits, Michael (Clifton Park, NY)

    2003-04-08

    A gas turbine system that includes a compressor, a turbine component and a load, wherein fuel and compressor discharge bleed air are supplied to a combustor and gaseous products of combustion are introduced into the turbine component and subsequently exhausted to atmosphere. A compressor discharge bleed air circuit removes bleed air from the compressor and supplies one portion of the bleed air to the combustor and another portion of the compressor discharge bleed air to an exhaust stack of the turbine component in a single cycle system, or to a heat recovery steam generator in a combined cycle system. In both systems, the bleed air diverted from the combustor may be expanded in an air expander to reduce pressure upstream of the exhaust stack or heat recovery steam generator.

  7. The use of neural nets for matching compressors with diesel engines

    SciTech Connect (OSTI)

    Nelson, S.A. II; Filipi, Z.S.; Assanis, D.N.

    1996-12-31

    A technique which uses trained neural nets to model the compressor in the context of a turbocharged diesel engine simulation is introduced. This technique replaces the usual interpolation of compressor maps with the evaluation of a smooth mathematical function, thus providing engine simulations with greater robustness and flexibility. Following presentation of the methodology, the proposed neural net technique is validated against data from a truck type, 6-cylinder, 14 liter diesel engine. Furthermore, with the introduction of an additional parameter, the proposed neural net can be trained to simulate an entire family of compressors. As a demonstration, five compressors of different sizes are represented with the neural net model, and used for matching calculations with intercooled and non-intercooled engine configurations at different speeds. This novel approach readily allows for evaluation of various options prior to prototype production, and is thus a powerful design tool for selection of the best compressor for a given diesel engine system.

  8. Detector for flow abnormalities in gaseous diffusion plant compressors

    DOE Patents [OSTI]

    Smith, Stephen F. (Loudon, TN); Castleberry, Kim N. (Harriman, TN)

    1998-01-01

    A detector detects a flow abnormality in a plant compressor which outputs a motor current signal. The detector includes a demodulator/lowpass filter demodulating and filtering the motor current signal producing a demodulated signal, and first, second, third and fourth bandpass filters connected to the demodulator/lowpass filter, and filtering the demodulated signal in accordance with first, second, third and fourth bandpass frequencies generating first, second, third and fourth filtered signals having first, second, third and fourth amplitudes. The detector also includes first, second, third and fourth amplitude detectors connected to the first, second, third and fourth bandpass filters respectively, and detecting the first, second, third and fourth amplitudes, and first and second adders connected to the first and fourth amplitude detectors and the second and third amplitude detectors respectively, and adding the first and fourth amplitudes and the second and third amplitudes respectively generating first and second added signals. Finally, the detector includes a comparator, connected to the first and second adders, and comparing the first and second added signals and detecting the abnormal condition in the plant compressor when the second added signal exceeds the first added signal by a predetermined value.

  9. Detector for flow abnormalities in gaseous diffusion plant compressors

    DOE Patents [OSTI]

    Smith, S.F.; Castleberry, K.N.

    1998-06-16

    A detector detects a flow abnormality in a plant compressor which outputs a motor current signal. The detector includes a demodulator/lowpass filter demodulating and filtering the motor current signal producing a demodulated signal, and first, second, third and fourth bandpass filters connected to the demodulator/lowpass filter, and filtering the demodulated signal in accordance with first, second, third and fourth bandpass frequencies generating first, second, third and fourth filtered signals having first, second, third and fourth amplitudes. The detector also includes first, second, third and fourth amplitude detectors connected to the first, second, third and fourth bandpass filters respectively, and detecting the first, second, third and fourth amplitudes, and first and second adders connected to the first and fourth amplitude detectors and the second and third amplitude detectors respectively, and adding the first and fourth amplitudes and the second and third amplitudes respectively generating first and second added signals. Finally, the detector includes a comparator, connected to the first and second adders, and comparing the first and second added signals and detecting the abnormal condition in the plant compressor when the second added signal exceeds the first added signal by a predetermined value. 6 figs.

  10. Weberg Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt

  11. Wedell Hot Spring Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEtGeorgia: Energy Resources Jump to: navigation,Weddington, North

  12. Weiser Hot Springs Greenhouse Low Temperature Geothermal Facility | Open

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEtGeorgia: Energy Resources Jump to: navigation,Weddington,Energy

  13. Upper Division Hot Spring Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt Al.,Turin, New York:Power CompanyCROSS-VALIDATION OFUpper Arlington,

  14. Vertical Electrical Sounding Configurations At Mt Princeton Hot Springs

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt Al.,Turin, NewArkansas:Standards Jump to:VernonWisconsin:Labs LLP

  15. Vichy Hot Springs Space Heating Low Temperature Geothermal Facility | Open

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt Al.,Turin, NewArkansas:Standards JumpUSA Jump to:Energy

  16. Wabuska Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt Al.,Turin,Village of Wellington,FL97-11Wabaunsee County,

  17. Walley's Hot Springs Resort Space Heating Low Temperature Geothermal

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt Al.,Turin,Village ofWaialua, Hawaii:Walbridge,Walker,WallaWaller|

  18. Thermal Characteristics of the Chena Hot Springs Alaska Geothermal System |

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt Al., 2013) |InformationThe2009) | Open Energy2008) || Open EnergyOpen

  19. Thermal Gradient Holes At Breitenbush Hot Springs Area (Ingebritsen, Et

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt Al., 2013) |InformationThe2009) | Open Energy2008) ||Al., 1993) | Open

  20. Thermo Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt Al., 2013) |InformationThe2009) | OpenThermalito, California:Thermo

  1. Umpqua Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt Al.,Turin, New York: EnergyU.S. EPAEnergyUltra HighUlubelu2Umicore SA

  2. Umpqua Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt Al.,Turin, New York: EnergyU.S. EPAEnergyUltra HighUlubelu2Umicore

  3. Genome mappers have a hot time at Cold Spring Harbor

    SciTech Connect (OSTI)

    Nowak, R.

    1995-05-26

    This is a report on the Genome Mapping and Sequencing meeting from 10-14 May 1995. Debate included how to start the final stage of the Human Genome Project (HGP) - large scale sequencing and the problem of funding. Major accomplishments of the HGP are summarized briefly including: maps of at least two chromosomes, 16 and 19, are in the final difficult stage and will be the first to be completely sequenced; evidence is being refined on the myotonic dystrophy gen; and an attempt to fashion a silicon chip to detect specific DNA sequences.

  4. Thermal Gradient Holes At Lake City Hot Springs Area (Warpinski...

    Open Energy Info (EERE)

    or drilling of production wells. Some deep wells, several seismic lines, limited gravity surveys, and geochemical and geological studies have suggested that the geothermal...

  5. Compound and Elemental Analysis At Lake City Hot Springs Area...

    Open Energy Info (EERE)

    or drilling of production wells. Some deep wells, several seismic lines, limited gravity surveys, and geochemical and geological studies have suggested that the geothermal...

  6. Petrography Analysis At Roosevelt Hot Springs Geothermal Area...

    Open Energy Info (EERE)

    - 1975 Usefulness useful DOE-funding Unknown Exploration Basis Petersen, C.A. Masters Thesis at the University of Utah Notes Petrographical analysis of hydrothermally altered...

  7. Aerial Photography At Roosevelt Hot Springs Geothermal Area ...

    Open Energy Info (EERE)

    - 1975 Usefulness useful DOE-funding Unknown Exploration Basis Petersen, C.A. Masters Thesis at the University of Utah Notes USGS aerial photography (scale 1:40,000) interpreted...

  8. Thermal Gradient Holes At Mt Princeton Hot Springs Geothermal...

    Open Energy Info (EERE)

    the area References J. Held, F. Henderson (2012) New developments in Colorado geothermal energy projects Additional References Retrieved from "http:en.openei.orgw...

  9. Static Temperature Survey At Lake City Hot Springs Area (Benoit...

    Open Energy Info (EERE)

    form View source History View New Pages Recent Changes All Special Pages Semantic SearchQuerying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with...

  10. Chena Hot Springs GRED III Project: Final Report Geology, Petrology...

    Open Energy Info (EERE)

    and petrology, mineralogy, geochemistry, of surface rocksamples. 2) Describe borehole geology by creating lithologic logs for each of the 10 CHSgeothermal wells...

  11. Compound and Elemental Analysis At Zim's Hot Springs Geothermal...

    Open Energy Info (EERE)

    of Oregon; 4) the Dixie Valley and Beowawe fields in Nevada; 5) Palinpiiion, the Philippines; 6) the Salton Sea and Heber geothermal fields of southern California; and 7) the...

  12. Trace Element Geochemical Zoning in the Roosevelt Hot Springs...

    Open Energy Info (EERE)

    suggest that Li, followed by As and Hg, are progressively deposited by outward flowing, cooling, thermal fluids. Hg, in contrast to As and Li, is distributed only think the outer...

  13. Compound and Elemental Analysis At Breitenbush Hot Springs Area...

    Open Energy Info (EERE)

    geothermal fields of southern California; and 7) the Dieng field in Central Java, Indonesia. We have analyzed the samples from all fields for REE except the last two. Our...

  14. Thermal Gradient Holes At Spencer Hot Springs Area (Shevenell...

    Open Energy Info (EERE)

    Activity Date Usefulness useful DOE-funding Unknown Notes Collaboration with the gold mining industry has brought two new geothermal discoveries to the attention of the geothermal...

  15. Compound and Elemental Analysis At Hot Springs Ranch Area (Szybinski...

    Open Energy Info (EERE)

    distinct waters in this group of samples (Tom Powell of Thermochem Inc., personal communication, 2005). Powell found that MDH, TRS-1 and TRS-6 are the most prospective waters and...

  16. Mystic Hot Springs Aquaculture Aquaculture Low Temperature Geothermal...

    Open Energy Info (EERE)

    ":"","inlineLabel":"","visitedicon":"" Hide Map Temperature 70.0 C 158.0 F Flow No Data Listed Contact 435-527-3286 References Oregon Institute of Technology's Geo-Heat...

  17. Rock Sampling At Roosevelt Hot Springs Geothermal Area (Ward...

    Open Energy Info (EERE)

    Area. References S. H. Ward, W. T. Parry, W. P. Nash, W. R. Sill, K. L. Cook, R. B. Smith, D. S. Chapman, F. H. Brown, J. A. Whelan, J. R. Bowman (1978) A Summary of the...

  18. Geothermometry At Roosevelt Hot Springs Geothermal Area (Ward...

    Open Energy Info (EERE)

    Area. References S. H. Ward, W. T. Parry, W. P. Nash, W. R. Sill, K. L. Cook, R. B. Smith, D. S. Chapman, F. H. Brown, J. A. Whelan, J. R. Bowman (1978) A Summary of the...

  19. Thermal Gradient Holes At Roosevelt Hot Springs Geothermal Area...

    Open Energy Info (EERE)

    References S. H. Ward, W. T. Parry, W. P. Nash, W. R. Sill, K. L. Cook, R. B. Smith, D. S. Chapman, F. H. Brown, J. A. Whelan, J. R. Bowman (1978) A Summary of the...

  20. Ground Magnetics At Roosevelt Hot Springs Geothermal Area (Ward...

    Open Energy Info (EERE)

    Area. References S. H. Ward, W. T. Parry, W. P. Nash, W. R. Sill, K. L. Cook, R. B. Smith, D. S. Chapman, F. H. Brown, J. A. Whelan, J. R. Bowman (1978) A Summary of the...

  1. Refraction Survey At Roosevelt Hot Springs Geothermal Area (Ward...

    Open Energy Info (EERE)

    Area. References S. H. Ward, W. T. Parry, W. P. Nash, W. R. Sill, K. L. Cook, R. B. Smith, D. S. Chapman, F. H. Brown, J. A. Whelan, J. R. Bowman (1978) A Summary of the...

  2. Isotopic Analysis- Fluid At Roosevelt Hot Springs Geothermal...

    Open Energy Info (EERE)

    waters. References S. H. Ward, W. T. Parry, W. P. Nash, W. R. Sill, K. L. Cook, R. B. Smith, D. S. Chapman, F. H. Brown, J. A. Whelan, J. R. Bowman (1978) A Summary of the...

  3. Audio-Magnetotellurics At Roosevelt Hot Springs Geothermal Area...

    Open Energy Info (EERE)

    MT data. References S. H. Ward, W. T. Parry, W. P. Nash, W. R. Sill, K. L. Cook, R. B. Smith, D. S. Chapman, F. H. Brown, J. A. Whelan, J. R. Bowman (1978) A Summary of the...

  4. Aeromagnetic Survey At Roosevelt Hot Springs Geothermal Area...

    Open Energy Info (EERE)

    References S. H. Ward, W. T. Parry, W. P. Nash, W. R. Sill, K. L. Cook, R. B. Smith, D. S. Chapman, F. H. Brown, J. A. Whelan, J. R. Bowman (1978) A Summary of the...

  5. Aerial Photography At Roosevelt Hot Springs Geothermal Area ...

    Open Energy Info (EERE)

    infrared. References S. H. Ward, W. T. Parry, W. P. Nash, W. R. Sill, K. L. Cook, R. B. Smith, D. S. Chapman, F. H. Brown, J. A. Whelan, J. R. Bowman (1978) A Summary of the...

  6. Geothermal Literature Review At Roosevelt Hot Springs Geothermal...

    Open Energy Info (EERE)

    References S. H. Ward, W. T. Parry, W. P. Nash, W. R. Sill, K. L. Cook, R. B. Smith, D. S. Chapman, F. H. Brown, J. A. Whelan, J. R. Bowman (1978) A Summary of the...

  7. Ground Gravity Survey At Roosevelt Hot Springs Geothermal Area...

    Open Energy Info (EERE)

    model. References S. H. Ward, W. T. Parry, W. P. Nash, W. R. Sill, K. L. Cook, R. B. Smith, D. S. Chapman, F. H. Brown, J. A. Whelan, J. R. Bowman (1978) A Summary of the...

  8. Field Mapping At Roosevelt Hot Springs Geothermal Area (Ward...

    Open Energy Info (EERE)

    Area. References S. H. Ward, W. T. Parry, W. P. Nash, W. R. Sill, K. L. Cook, R. B. Smith, D. S. Chapman, F. H. Brown, J. A. Whelan, J. R. Bowman (1978) A Summary of the...

  9. DC Resistivity Survey (Schlumberger Array) At Roosevelt Hot Springs...

    Open Energy Info (EERE)

    zones. References S. H. Ward, W. T. Parry, W. P. Nash, W. R. Sill, K. L. Cook, R. B. Smith, D. S. Chapman, F. H. Brown, J. A. Whelan, J. R. Bowman (1978) A Summary of the...

  10. Micro-Earthquake At Roosevelt Hot Springs Geothermal Area (Ward...

    Open Energy Info (EERE)

    Area. References S. H. Ward, W. T. Parry, W. P. Nash, W. R. Sill, K. L. Cook, R. B. Smith, D. S. Chapman, F. H. Brown, J. A. Whelan, J. R. Bowman (1978) A Summary of the...

  11. Self Potential At Mt Princeton Hot Springs Geothermal Area (Richards...

    Open Energy Info (EERE)

    2008 - 2010 Usefulness useful DOE-funding Unknown Exploration Basis Determination of groundwater flux patterns Notes Researchers collected 2700 SP measurements. Equilibrium...

  12. DC Resistivity Survey (Wenner Array) At Mt Princeton Hot Springs...

    Open Energy Info (EERE)

    2008 - 2010 Usefulness useful DOE-funding Unknown Exploration Basis Determination of groundwater flux patterns Notes Researchers measured DC resistivity and produced 12 resistivity...

  13. An Overview of Environmental Issues: Roosevelt Hot Springs KGRA...

    Open Energy Info (EERE)

    creating unacceptable noise impacts. Author Philip Leitner Published Journal DOE Science and Technical Information, 1978 DOI 10.21726217844 Online Internet link for An...

  14. The Chena Hot Springs 400kw Geothermal Power Plant: Experience...

    Open Energy Info (EERE)

    PureCycle 200product released by UTC in 2004 and designed to operate offindustrial waste heat applications. The PureCycle 200 usescomponents and hardware from the Carrier...

  15. Paleomagnetic Measurements At Neal Hot Springs Geothermal Area...

    Open Energy Info (EERE)

    pipe drill. Core samples were oriented by azimuth and hade using a magnetic compass and sun dial, then marked before being removed from the host rock. The core samples were then...

  16. Understanding The Chena Hot Springs, Alaska, Geothermal System...

    Open Energy Info (EERE)

    varying pressure versus depth characteristics and can be used alone in cases where staged drilling is not practical. The extensive exploration activities helped define optimal...

  17. Self Potential At Roosevelt Hot Springs Geothermal Area (Ward...

    Open Energy Info (EERE)

    Area. References S. H. Ward, W. T. Parry, W. P. Nash, W. R. Sill, K. L. Cook, R. B. Smith, D. S. Chapman, F. H. Brown, J. A. Whelan, J. R. Bowman (1978) A Summary of the...

  18. Multispectral Imaging At Buffalo Valley Hot Springs Area (Littlefield...

    Open Energy Info (EERE)

    Spectral Imaging Sensor ASTER Usefulness useful DOE-funding Unknown Notes ASTER airborne remote sensing. References E. Littlefield, W. Calvin (2009) Remote Sensing For Geothermal...

  19. Micro-Earthquake At Neal Hot Springs Geothermal Area (Nichols...

    Open Energy Info (EERE)

    Usefulness not indicated DOE-funding Unknown Exploration Basis The goal of this seismic monitoring study was to obtain seismic data during power plant construction, testing,...

  20. Reflection Survey At Neal Hot Springs Geothermal Area (Colwell...

    Open Energy Info (EERE)

    Activity Date 2011 - 2011 Usefulness useful DOE-funding Unknown Exploration Basis Seismic surveys ware conducted to gain a better understanding of the geology and structure of...

  1. A Preliminary Study Of Older Hot Spring Alteration In Sevenmile...

    Open Energy Info (EERE)

    are zoned, with an advanced argillic alteration consisting of an association of quartz (opal) + kaolinite alunite dickite, and an argillic or potassic alteration association...

  2. Audio-Magnetotellurics At Baltazor Hot Springs Area (Isherwood...

    Open Energy Info (EERE)

    1.6 ohm-m. Both maps show a second low to the south apparently associated with the low-density Cenozoic sediments. Three telluric profiles across the KGRA also define a low of...

  3. Ground Gravity Survey At Mt Princeton Hot Springs Geothermal...

    Open Energy Info (EERE)

    lithologic distrubtions Notes Gravity low associated with Mt. Princeton Batholith; density contrast of -0.5 gcm3 of valley-fill sediments relative to batholith References J.E....

  4. Ground Gravity Survey At Baltazor Hot Springs Area (Isherwood...

    Open Energy Info (EERE)

    (Fig. 2) shows a gravity low within the valley area that presumably is related to low-density Cenozoic sediments. The steep gravity gradient along the east side of the valley...

  5. Trace Element Analysis At Roosevelt Hot Springs Area (Christensen...

    Open Energy Info (EERE)

    siliceous material at the location of liquid discharge, fluid mixing, or at boiling interfaces; (2) deposits of Mn and Fe oxides containing concentrations of Ba, W, Be, Co, Cu,...

  6. Steamboat Villa Hot Springs Spa Space Heating Low Temperature Geothermal

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-Enhancing CapacityVectren) Jumpand MaintenanceStationary Powerform View

  7. Summer Lake Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-Enhancing CapacityVectren)Model for the EntireOpen Energy Information Pu╩╗uSummer

  8. Summer Lake Hot Springs Space Heating Low Temperature Geothermal Facility |

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-Enhancing CapacityVectren)Model for the EntireOpen Energy InformationOpen Energy

  9. Surprise Valley Hot Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

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  10. Tecopa Hot Springs Space Heating Low Temperature Geothermal Facility | Open

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  11. Huckelberry Hot Springs Pool & Spa Low Temperature Geothermal Facility |

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  12. Huckleberry Hot Springs Geothermal Area | Open Energy Information

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  13. Hunter Hot Spring Greenhouse Greenhouse Low Temperature Geothermal Facility

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  14. Hunters Hot Spring Space Heating Low Temperature Geothermal Facility | Open

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  15. Ground Gravity Survey At Roosevelt Hot Springs Geothermal Area (Faulder,

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  16. Hobo Hot Springs Aquaculture Low Temperature Geothermal Facility | Open

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  17. Geothermal Literature Review At Breitenbush Hot Springs Area (Ingebritsen,

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  18. Geothermal Literature Review At Roosevelt Hot Springs Geothermal Area

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  19. Geothermal Literature Review At Roosevelt Hot Springs Geothermal Area

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  20. Geothermal Literature Review At Roosevelt Hot Springs Geothermal Area

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  1. Geothermal resistivity resource evaluation survey Waunita Hot Springs

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  2. Geothermometry At Buffalo Valley Hot Springs Area (Laney, 2005) | Open

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  3. Geothermometry At Hot Springs Ranch Area (Szybinski, 2006) | Open Energy

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  4. Geothermometry At Roosevelt Hot Springs Geothermal Area (Ward, Et Al.,

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  5. Gila Hot Springs District Heating Low Temperature Geothermal Facility |

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  6. Gila Hot Springs Geothermal Area | Open Energy Information

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  7. Glenwood Hot Springs Lodge Space Heating Low Temperature Geothermal

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  8. Green Canyon Hot Springs Greenhouse Low Temperature Geothermal Facility |

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  9. Dall Hot Spring Geothermal Area | Open Energy Information

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  10. Darrough Hot Springs Geothermal Project | Open Energy Information

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  11. Del Rio Hot Springs Space Heating Low Temperature Geothermal Facility |

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  12. Desert Hot Springs Space Heating Low Temperature Geothermal Facility | Open

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  13. Dixie Hot Springs Geothermal Area | Open Energy Information

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  14. Dixie Hot Springs Geothermal Area | Open Energy Information

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  15. Donlay Ranch Hot Spring Greenhouse Low Temperature Geothermal Facility |

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  16. Exploration model for possible geothermal reservoir, Coso Hot Springs KGRA,

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  17. Exploratory Well At Roosevelt Hot Springs Geothermal Area (Faulder, 1991) |

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  18. Exploratory Well At Roosevelt Hot Springs Geothermal Area (Petersen, 1975)

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  19. Fairmont Hot Springs Resort Space Heating Low Temperature Geothermal

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  20. Roosevelt Hot Springs Geothermal Area | Open Energy Information

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  1. Roosevelt Hot Springs Geothermal Area | Open Energy Information

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  2. Roystone Hot Springs Geothermal Area | Open Energy Information

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  3. Sand Dunes Hot Spring Aquaculture Low Temperature Geothermal Facility |

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  4. Schutz's Hot Spring Space Heating Low Temperature Geothermal Facility |

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  5. Soil mercury investigations, Waunita Hot Springs | Open Energy Information

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  6. Squaw Hot Springs Geothermal Area | Open Energy Information

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  7. Medical Hot Springs Space Heating Low Temperature Geothermal Facility |

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  8. Melozi Hot Springs Geothermal Area | Open Energy Information

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  9. Mineral Hot Springs Geothermal Area | Open Energy Information

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  10. Miracle Hot Spring Space Heating Low Temperature Geothermal Facility | Open

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  11. Miracle Hot Springs Space Heating Low Temperature Geothermal Facility |

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  12. Multispectral Imaging At Buffalo Valley Hot Springs Area (Laney, 2005) |

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  13. Mystic Hot Springs Aquaculture Aquaculture Low Temperature Geothermal

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  14. Lolo Hot Springs Resort Space Heating Low Temperature Geothermal Facility |

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  15. Magnetotellurics At Roosevelt Hot Springs Geothermal Area (Ward, Et Al.,

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  16. Kelly Hot Springs Aquaculture Low Temperature Geothermal Facility | Open

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  17. Lake City Hot Springs Geothermal Area | Open Energy Information

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  18. Lake City Hot Springs Geothermal Area | Open Energy Information

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  19. Lava Hot Springs Space Heating Low Temperature Geothermal Facility | Open

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  20. Ishtalitna Hot Spring Geothermal Area | Open Energy Information

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  1. Isotopic Analysis- Fluid At Indian Valley Hot Springs Geothermal Area

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  2. Isotopic Analysis- Fluid At Roosevelt Hot Springs Geothermal Area (Faulder,

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  3. Jackson Hot Springs Lodge Space Heating Low Temperature Geothermal Facility

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  4. Joseph Hot Springs Geothermal Area | Open Energy Information

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  5. Pinkerton Hot Springs Space Heating Low Temperature Geothermal Facility |

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  6. Pressure Temperature Log At Roosevelt Hot Springs Geothermal Area (Faulder,

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  7. Radium Hot Springs Space Heating Low Temperature Geothermal Facility | Open

    Open Energy Info (EERE)

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  8. Red River Hot Springs Geothermal Area | Open Energy Information

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  9. Neal Hot Springs Geothermal Area | Open Energy Information

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  10. Neal Hot Springs Geothermal Power Plant | Open Energy Information

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  11. Neinmeyer Hot Springs Geothermal Area | Open Energy Information

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  12. Paleomagnetic Measurements At Roosevelt Hot Springs Geothermal Area

    Open Energy Info (EERE)

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  13. Paleomagnetic Measurements At Roosevelt Hot Springs Geothermal Area (Ward,

    Open Energy Info (EERE)

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  14. Brady Hot Springs Geothermal Area | Open Energy Information

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  15. Buffalo Valley Hot Springs Geothermal Area | Open Energy Information

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  16. Pilgrim Hot Springs Geothermal Area | Open Energy Information

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  17. Chena Hot Springs Resort - Electric Power Generation Using Geothermal Fluid

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  18. Reflection Survey At Hot Sulphur Springs Area (Goranson, 2005) | Open

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  19. Seismic baseline and induction studies- Roosevelt Hot Springs, Utah and

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  20. Sespe Hot Springs Geothermal Area | Open Energy Information

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  1. Sharkey Hot Springs Geothermal Area | Open Energy Information

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  2. Sitka Hot Spring Geothermal Area | Open Energy Information

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  3. Slate Creek Hot Springs Geothermal Area | Open Energy Information

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  4. Sleeping Child Hot Springs Geothermal Area | Open Energy Information

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  5. Spencer Hot Springs Geothermal Area | Open Energy Information

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  6. Sulphur Hot Springs Geothermal Area | Open Energy Information

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  7. Sunbeam Hot Springs Geothermal Area | Open Energy Information

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  8. Tassajara Hot Springs Geothermal Area | Open Energy Information

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  9. Tecopa Hot Springs Geothermal Area | Open Energy Information

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  10. The Geophysical Environment Around Waunita Hot Springs | Open Energy

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  11. Thermal Gradient Holes At Waunita Hot Springs Geothermal Area (Zacharakis,

    Open Energy Info (EERE)

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  12. Understanding The Chena Hot Springs, Alaska, Geothermal System Using

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  13. Vale Hot Springs Geothermal Area | Open Energy Information

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  14. Vertical Seismic Profiling At Neal Hot Springs Geothermal Area (Colorado

    Open Energy Info (EERE)

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  15. Vulcan Hot Springs Geothermal Area | Open Energy Information

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  16. Water Sampling At Roosevelt Hot Springs Geothermal Area (Faulder, 1991) |

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  17. Water Sampling At Waunita Hot Springs Geothermal Area (Carpenter, 1981) |

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  18. White Arrow Hot Springs Geothermal Area | Open Energy Information

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  19. White Licks Hot Springs Geothermal Area | Open Energy Information

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  20. Wilson Hot Spring Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

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