Sample records for hot water presentation

  1. Direct Use for Building Heat and Hot Water Presentation Slides and Text Version

    Broader source: Energy.gov [DOE]

    Download presentation slides from the DOE Office of Indian Energy webinar on direct use for building heat and hot water.

  2. Water Heaters and Hot Water Distribution Systems

    E-Print Network [OSTI]

    Lutz, Jim

    2012-01-01T23:59:59.000Z

    Transportation Water Heaters and Hot Water DistributionLaboratory). 2008. Water Heaters and Hot Water Distributionfor instantaneous gas water heaters; and pressure loss

  3. Arnold Schwarzenegger WATER HEATERS AND HOT WATER

    E-Print Network [OSTI]

    Arnold Schwarzenegger Governor WATER HEATERS AND HOT WATER DISTRIBUTION SYSTEMS: Lutz J.D. (Lawrence Berkeley National Laboratory). 2008. Water Heaters and Hot Water Distribution

  4. Water Heaters and Hot Water Distribution Systems

    E-Print Network [OSTI]

    Lutz, Jim

    2012-01-01T23:59:59.000Z

    the temperature of the residual water encountered by theof hot water and the residual water might occur: (1) thehot water might drive the residual water through the piping

  5. Webinar: ENERGY STAR Hot Water Systems for High Performance Homes...

    Energy Savers [EERE]

    Webinar: ENERGY STAR Hot Water Systems for High Performance Homes Webinar: ENERGY STAR Hot Water Systems for High Performance Homes This presentation is from the Building America...

  6. Green Systems Solar Hot Water

    E-Print Network [OSTI]

    Schladow, S. Geoffrey

    Green Systems Solar Hot Water Heating the Building Co-generation: Heat Recovery System: Solar panels not enough Generates heat energy Captures heat from generator and transfers it to water Stores Thermal Panels (Trex enclosure) Hot Water Storage Tank (TS-5; basement) Hot Water Heaters (HW-1

  7. Arnold Schwarzenegger WATER HEATERS AND HOT WATER

    E-Print Network [OSTI]

    Arnold Schwarzenegger Governor WATER HEATERS AND HOT WATER DISTRIBUTION SYSTEMS;#12;Appendices Appendix A. Multifamily Water Heating Construction Practices, Pricing and Availability Survey Report Appendix B. Multifamily Water Heating Controls Performance Field Report Appendix C. Pipe

  8. Modern hot water district heating

    SciTech Connect (OSTI)

    Karnitz, M.A.; Barnes, M.H.; Kadrmas, C.; Nyman, H.O.

    1984-06-01T23:59:59.000Z

    The history of district heating in Europe is drastically different from that in the United States. The development of district heating in northern and eastern Europe started in the early 1950s. Hot water rather than steam was used as the transport medium and the systems have proven to be more economical. Recently, the northern European concept has been introduced into two US cities - St. Paul and Willmar, Minnesota. The hot water project in St. Paul started construction and operation in the summer and fall of 1983, respectively. The entire first phase of the St. Paul project will take two summers to construct and will connect approximately 80 buildings for a total of 150 MW(t). The system spans the entire St. Paul business district and includes privately owned offices and retail buildings, city and county government buildings, hospitals, the state Capitol complex, and several industrial customers. The City of Willmar, Minnesota, replaced an old steam system with a modern hot water system in the summer of 1982. The first phase of the hot water system was constructed in the central business district. The system serves a peak thermal load of about 10 MW(t) and includes about 12,000 ft of network. The Willmar system completed the second stage of development in the fall of 1983. These two new systems demonstrate the benefits of the low-temperature hot water district heating technology. The systems are economical to build, have high reliability, and have low maintenance and operating cost.

  9. Stratification in hot water tanks

    SciTech Connect (OSTI)

    Balcomb, J.D.

    1982-04-01T23:59:59.000Z

    Stratification in a domestic hot water tank, used to increase system performance by enabling the solar collectors to operate under marginal conditions, is discussed. Data taken in a 120 gallon tank indicate that stratification can be achieved without any special baffling in the tank. (MJF)

  10. Tool for Generating Realistic Residential Hot Water Event Schedules...

    Office of Environmental Management (EM)

    Residential Hot Water Event Schedules: Preprint Presented at SimBuild 2010; New York, New York; August 1519, 2010 47685.pdf More Documents & Publications Model Simulating...

  11. Solar Works in Seattle: Domestic Hot Water

    Broader source: Energy.gov [DOE]

    Seattle's residential solar hot water workshop. Content also covers general solar resource assessment, siting, and financial incentives.

  12. Design package for solar domestic hot water system

    SciTech Connect (OSTI)

    None

    1980-09-01T23:59:59.000Z

    Information used to evaluate the initial design of the Elcam, Inc., Solar Domestic Hot Water System is presented. Included are such items as the system performance specification, detailed design drawings and other information. Elcam, Inc., has developed two solar heated prototype hot water systems and two heat exchangers. The hot water systems consist of the following subsystems: collector, storage, control, transport, auxiliary energy, and government-furnished Site Data Acquisition. The two systems are installed at Tempe, Arizona, and San Diego, California.

  13. Alternatives for reducing hot-water bills

    SciTech Connect (OSTI)

    Bennington, G.E.; Spewak, P.C.

    1981-06-01T23:59:59.000Z

    A two stage approach to reducing residential water heating bills is described. In Stage I, simple conservation measures were included to reduce the daily hot water energy consumption and the energy losses from the water tank. Once these savings are achieved, Stage II considers more costly options for further reducing the water heating bill. Four alternatives are considered in Stage II: gas water heaters; solar water heaters (two types); heat pump water heaters; and heat recovery from a heat pump or air conditioner. To account for variations within the MASEC region, information on water heating in Rapid City, Minneapolis, Chicago, Detroit, and Kansas City is presented in detail. Information on geography, major population centers, fuel prices, climate, and state solar incentives is covered. (MCW)

  14. STATE OF CALIFORNIA DOMESTIC HOT WATER (DHW)

    E-Print Network [OSTI]

    storage water heaters (rated input of greater than 75,000 Btu/hr), list Recovery Efficiency (RE), Thermal; and Pipe insulation for steam hydronic heating systems or hot water systems >15 psi, meets the requirements with Multiple Dwelling Units (required for prescriptive) TO COMPLY - ALL BOXES MUST BE CHECKED All hot water

  15. Solar Hot Water Resources and Technologies

    Broader source: Energy.gov [DOE]

    This page provides a brief overview of solar hot water (SHW) technologies supplemented by specific information to apply SHW within the Federal sector.

  16. Monitoring SERC Technologies ó Solar Hot Water

    Broader source: Energy.gov [DOE]

    A webinar by National Renewable Energy Laboratory analyst Eliza Hotchkiss on Solar Hot Water systems and how to properly monitor their installation.

  17. Are we putting in hot water?

    E-Print Network [OSTI]

    Combes, Stacey A.

    Are we putting our fish in hot water? Global warming and the world's fisheries ∑ Hot, hungry, and gasping for air ∑ Shrinking fish and fewer babies? ∑ Global warming puts fish on the run ∑ Warm water ∑ Howmucharefishworth? ∑ Which fish are feeling the heat? ∑ How will fisheries change? ∑ 2įC is too much! ∑ What needs

  18. DOE ZERH Webinar: Efficient Hot Water Distribution II: How to...

    Broader source: Energy.gov (indexed) [DOE]

    II: How to Get it Right DOE ZERH Webinar: Efficient Hot Water Distribution II: How to Get it Right Watch the video or view the presentation slides below Zero Energy Ready Homes...

  19. Solar Hot Water Resources and Technologies | Department of Energy

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

    Hot Water Resources and Technologies Solar Hot Water Resources and Technologies Photo of a standalone solar hot water system standing in front of a clothesline with a backdrop of...

  20. Tool for Generating Realistic Residential Hot Water Event Schedules: Preprint

    SciTech Connect (OSTI)

    Hendron, B.; Burch, J.; Barker, G.

    2010-08-01T23:59:59.000Z

    The installed energy savings for advanced residential hot water systems can depend greatly on detailed occupant use patterns. Quantifying these patterns is essential for analyzing measures such as tankless water heaters, solar hot water systems with demand-side heat exchangers, distribution system improvements, and recirculation loops. This paper describes the development of an advanced spreadsheet tool that can generate a series of year-long hot water event schedules consistent with realistic probability distributions of start time, duration and flow rate variability, clustering, fixture assignment, vacation periods, and seasonality. This paper also presents the application of the hot water event schedules in the context of an integral-collector-storage solar water heating system in a moderate climate.

  1. Hot Water DJ: Saving Energy by Pre-mixing Hot Water Md Anindya Prodhan

    E-Print Network [OSTI]

    Whitehouse, Kamin

    Hot Water DJ: Saving Energy by Pre-mixing Hot Water Md Anindya Prodhan Department of Computer University of Virginia whitehouse@virginia.edu Abstract After space heating and cooling, water heating consumption. Current water heating systems waste up to 20% of their energy due to poor insulation in pipes

  2. Disaggregating Hot Water Use and Predicting Hot Water Waste in Five Test Homes

    SciTech Connect (OSTI)

    Henderson, H.; Wade, J.

    2014-04-01T23:59:59.000Z

    While it is important to make the equipment (or 'plant') in a residential hot water system more efficient, the hot water distribution system also affects overall system performance and energy use. Energy wasted in heating water that is not used is estimated to be on the order of 10 to 30 percent of total domestic hot water (DHW) energy use. This field monitoring project installed temperature sensors on the distribution piping (on trunks and near fixtures) and programmed a data logger to collect data at 5 second intervals whenever there was a hot water draw. This data was used to assign hot water draws to specific end uses in the home as well as to determine the portion of each hot water that was deemed useful (i.e., above a temperature threshold at the fixture). Five houses near Syracuse NY were monitored. Overall, the procedures to assign water draws to each end use were able to successfully assign about 50% of the water draws, but these assigned draws accounted for about 95% of the total hot water use in each home. The amount of hot water deemed as useful ranged from low of 75% at one house to a high of 91% in another. At three of the houses, new water heaters and distribution improvements were implemented during the monitoring period and the impact of these improvements on hot water use and delivery efficiency were evaluated.

  3. Model Simulating Real Domestic Hot Water Use - Building America...

    Energy Savers [EERE]

    Model Simulating Real Domestic Hot Water Use - Building America Top Innovation Model Simulating Real Domestic Hot Water Use - Building America Top Innovation Image of a pipe...

  4. The Chilled Water and Hot Water Building Differential Pressure Setpoint Calculation - Chilled Water and Hot Water Pump Speed Control

    E-Print Network [OSTI]

    Turner, W. D.; Bruner, H., Jr.; Claridge, D.; Liu, C.; Deng, S.

    2002-01-01T23:59:59.000Z

    A&M University College Station, TX ABSTRACT More and more variable frequency devices (VFD) are being installed on the chilled water and hot water pumps on the TAMU campus. Those pump speeds are varied to maintain chilled water... and the rest 46 buildings are located on the west campus. More and more variable frequency devices (VFD) are installed on chilled water and hot water pumps. The variable speed pump has reduced the over-pressuring of water systems and reduced pump...

  5. Continuous Commissioning of a Central Chilled Water & Hot Water System

    E-Print Network [OSTI]

    Deng, S.; Turner, W. D.; Batten, T.; Liu, M.

    2000-01-01T23:59:59.000Z

    the campus loops and the building loops. Some optimization of the plant chiller 1 boiler operation is also necessary and beneficial. In general, through Continuous Commissioning, chilled water and hot water loop temperature differences will be improved...

  6. CC Retrofits and Optimal Controls for Hot Water Systems

    E-Print Network [OSTI]

    Wu, L.; Liu, M.; Wang, G.

    2007-01-01T23:59:59.000Z

    Continuous Commissioning (CC) technologies, three old boilers (13.39 MMBH each) were replaced by three new boilers (1.675 MMBH each) and hot water pumps. Optimal controls for the hot water systems included optimal hot water temperature reset, hot water pump...

  7. Water Heaters and Hot Water Distribution Systems

    E-Print Network [OSTI]

    Lutz, Jim

    2012-01-01T23:59:59.000Z

    efficient gas water heating appliance to market; a plan toefficient gas water heating appliance to market; and to planefficient gas water heating appliance to market; and 3) to

  8. Water Heaters and Hot Water Distribution Systems

    E-Print Network [OSTI]

    Lutz, Jim

    2012-01-01T23:59:59.000Z

    24 Figure 7. Comparison of Daily Water Heater28 Figure 8. Monitored Field Efficiency of Tankless Water28 Figure 9. Monitored Lab Efficiency of Tankless Water

  9. Water Heaters and Hot Water Distribution Systems

    E-Print Network [OSTI]

    Lutz, Jim

    2012-01-01T23:59:59.000Z

    step in developing a realistic degradation term for tankless water heatersstep (water draw event) in the simulation. Instantaneous Gas Water Heater

  10. Evaporative system for water and beverage refrigeration in hot countries

    E-Print Network [OSTI]

    Evaporative system for water and beverage refrigeration in hot countries A Saleh1 and MA Al-Nimr2 1 Abstract: The present study proposes an evaporative refrigerating system used to keep water or other are found to be consistent with the available literature data. Keywords: evaporative refrigeration, heat

  11. Hot Water Heating System Operation and Energy Conservation

    E-Print Network [OSTI]

    Shao, Z.; Chen, H.; Wei, P.

    2006-01-01T23:59:59.000Z

    Based on an example of the reconstruction of a hot water heating system, this paper provides an analysis and comparison of the operations of hot water heating systems, including supply water temperature adjustment, flow adjustment during each...

  12. Modeling patterns of hot water use in households

    SciTech Connect (OSTI)

    Lutz, James D.; Liu, Xiaomin; McMahon, James E.; Dunham, Camilla; Shown, Leslie J.; McCure, Quandra T.

    1996-01-01T23:59:59.000Z

    This report presents a detailed model of hot water use patterns in individual households. The model improves upon an existing model by including the effects of four conditions that were previously unaccounted for: the absence of a clothes washer; the absence of a dishwasher; a household consisting of seniors only; and a household that does not pay for its own hot water use. Although these four conditions can significantly affect residential hot water use, and have been noted in other studies, this is the first time that they have been incorporated into a detailed model. This model allows detailed evaluation of the impact of potential efficiency standards for water heaters and other market transformation policies.

  13. Modeling patterns of hot water use in households

    SciTech Connect (OSTI)

    Lutz, J.D.; Liu, Xiaomin; McMahon, J.E. [and others

    1996-11-01T23:59:59.000Z

    This report presents a detailed model of hot water use patterns in individual household. The model improves upon an existing model by including the effects of four conditions that were previously unaccounted for: the absence of a clothes washer; the absence of a dishwasher; a household consisting of seniors only; and a household that does not pay for its own hot water use. Although these four conditions can significantly affect residential hot water use, and have been noted in other studies, this is the first time that they have been incorporated into a detailed model. This model allows detailed evaluation of the impact of potential efficiency standards for water heaters and other market transformation policies. 21 refs., 3 figs., 10 tabs.

  14. Water Heaters and Hot Water Distribution Systems

    E-Print Network [OSTI]

    Lutz, Jim

    2012-01-01T23:59:59.000Z

    heat loss testing; part load performance curves for instantaneous gas water heaters; and pressure loss calculationsheat loss testing; part load performance curves for instantaneous gas water heaters; and pressure loss calculations

  15. Hot water bitumen extraction process

    SciTech Connect (OSTI)

    Rendall, J.S.

    1989-10-24T23:59:59.000Z

    This patent describes a method of extracting bitumen oils from tar-sands ore. It includes an initial conditioning step comprising crushing tar-sands ore to yield solid particles of a maximum size required by a log washer conditioner in a second conditioning step; a bitumen extraction step; a bitumen separation step; a solvent recovery step; a sand washing and water clarification step; and a sand solvent recovery step.

  16. Solar Hot Water Creates Savings for Homeless Shelters | Department...

    Broader source: Energy.gov (indexed) [DOE]

    Solar Hot Water Creates Savings for Homeless Shelters Solar Hot Water Creates Savings for Homeless Shelters July 15, 2010 - 12:10pm Addthis Kevin Craft What are the key facts?...

  17. High temperature hot water distribution system study

    SciTech Connect (OSTI)

    NONE

    1996-12-01T23:59:59.000Z

    The existing High Temperature Hot Water (HTHW) Distribution System has been plagued with design and construction deficiencies since startup of the HTHW system, in October 1988. In October 1989, after one year of service, these deficiencies were outlined in a technical evaluation. The deficiencies included flooded manholes, sump pumps not hooked up, leaking valves, contaminated HTHW water, and no cathodic protection system. This feasibility study of the High Temperature Hot Water (HTHW) Distribution System was performed under Contract No. DACA0l-94-D-0033, Delivery Order 0013, Modification 1, issued to EMC Engineers, Inc. (EMC), by the Norfolk District Corps of Engineers, on 25 April 1996. The purpose of this study was to determine the existing conditions of the High Temperature Hot Water Distribution System, manholes, and areas of containment system degradation. The study focused on two areas of concern, as follows: * Determine existing conditions and areas of containment system degradation (leaks) in the underground carrier pipes and protective conduit. * Document the condition of underground steel and concrete manholes. To document the leaks, a site survey was performed, using state-of-the-art infrared leak detection equipment and tracer gas leak detection equipment. To document the condition of the manholes, color photographs were taken of the insides of 125 manholes, and notes were made on the condition of these manholes.

  18. Hot water can freeze faster than cold?!?

    E-Print Network [OSTI]

    Monwhea Jeng

    2005-12-29T23:59:59.000Z

    We review the Mpemba effect, where intially hot water freezes faster than initially cold water. While the effect appears impossible at first sight, it has been seen in numerous experiments, was reported on by Aristotle, Francis Bacon, and Descartes, and has been well-known as folklore around the world. It has a rich and fascinating history, which culminates in the dramatic story of the secondary school student, Erasto Mpemba, who reintroduced the effect to the twentieth century scientific community. The phenomenon, while simple to describe, is deceptively complex, and illustrates numerous important issues about the scientific method: the role of skepticism in scientific inquiry, the influence of theory on experiment and observation, the need for precision in the statement of a scientific hypothesis, and the nature of falsifiability. We survey proposed theoretical mechanisms for the Mpemba effect, and the results of modern experiments on the phenomenon. Studies of the observation that hot water pipes are more likely to burst than cold water pipes are also described.

  19. Design manual for high temperature hot water and steam systems

    SciTech Connect (OSTI)

    Cofield, R.E. Jr.

    1984-01-01T23:59:59.000Z

    The author presents aspects of high temperature hot water and steam generating systems. It covers all the calculations that must be made for sizing and then selecting the equipment that will make up an energy system. The author provides essential information on loan analysis, types of fuel, storage requirements, handling facilities, waste disposal, HVAC needs, and back-up systems. Also included are the calculations needed for determining the size of compressors, air pollution devices, fans, filters, and other supplementary equipment.

  20. Tool for Generating Realistic Residential Hot Water Event Schedules...

    Energy Savers [EERE]

    Paper NRELCP-550-47685 August 2010 Tool for Generating Realistic Residential Hot Water Event Schedules Preprint Bob Hendron and Jay Burch National Renewable Energy...

  1. Interpretation of Water Sample Analysis, Waunita Hot Spring Project...

    Open Energy Info (EERE)

    R. H. Carpenter (Colorado Geological Survey in Cooperation with the U.S. Department of Energy). 1981. Interpretation of Water Sample Analysis, Waunita Hot Spring Project,...

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

    Open Energy Info (EERE)

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

  3. Analysis Model for Domestic Hot Water Distribution Systems: Preprint

    SciTech Connect (OSTI)

    Maguire, J.; Krarti, M.; Fang, X.

    2011-11-01T23:59:59.000Z

    A thermal model was developed to estimate the energy losses from prototypical domestic hot water (DHW) distribution systems for homes. The developed model, using the TRNSYS simulation software, allows researchers and designers to better evaluate the performance of hot water distribution systems in homes. Modeling results were compared with past experimental study results and showed good agreement.

  4. Pilot Phase of a Field Study to Determine Waste of Water and Energy in Residential Hot-Water Distribution Systems

    E-Print Network [OSTI]

    Lutz, Jim

    2012-01-01T23:59:59.000Z

    and monitoring at the water heater and hot water end uses.water at the trunk (water heater) and twigs (individual end-and outlet of the water heater and several hot water end-

  5. High temperature hot water systems: A primer

    SciTech Connect (OSTI)

    Govan, F.A. [NMD and Associates, Cincinnati, OH (United States)

    1998-01-01T23:59:59.000Z

    The fundamental principles of high temperature water (HTW) system technology and its advantages for thermal energy distribution are presented. Misconceptions of this technology are also addressed. The paper describes design principles, applications, HTW properties, HTW system advantages, selecting the engineer, load diversification, design temperatures, system pressurization, pump considerations, constant vs. VS pumps, HTW generator types, and burners and controls.

  6. Hot Spot Conditions during Cavitation in Water Yuri T. Didenko,

    E-Print Network [OSTI]

    Suslick, Kenneth S.

    Hot Spot Conditions during Cavitation in Water Yuri T. Didenko, William B. McNamara III-13 the effective hot spot temperature during aqueous cavitation remains unresolved. Given the importance of aqueous cavitation (sonography and bioeffects of ultrasound, sonochemical remediation of aqueous pollutants

  7. DOE Zero Energy Ready Home Efficient Hot Water Distribution I...

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

    I -- What's At Stake Webinar (Text Version) DOE Zero Energy Ready Home Efficient Hot Water Distribution I -- What's At Stake Webinar (Text Version) Below is the text version of the...

  8. DOE Zero Energy Ready Home Efficient Hot Water Distribution II...

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

    -- How to Get it Right Webinar (Text Version) DOE Zero Energy Ready Home Efficient Hot Water Distribution II -- How to Get it Right Webinar (Text Version) Below is the text...

  9. STATE OF CALIFORNIA AIR, WATER SIDE SYSTEM, SERVICE HOT WATER & POOL REQUIREMENTS

    E-Print Network [OSTI]

    Certified Water Heater §111, §113 (a) Water Heater Efficiency §113 (b) Service Water Heating Installation/A" in the column next to the measure. 2: For each water heater, pool heat and domestic water loop (or groupsSTATE OF CALIFORNIA AIR, WATER SIDE SYSTEM, SERVICE HOT WATER & POOL REQUIREMENTS CEC-MECH-2C

  10. TYPICAL HOT WATER DRAW PATTERNS BASED ON FIELD DATA

    SciTech Connect (OSTI)

    Lutz, Jim; Melody, Moya

    2012-11-08T23:59:59.000Z

    There is significant variation in hot water use and draw patterns among households. This report describes typical hot water use patterns in single-family residences in North America. We found that daily hot water use is highly variable both among residences and within the same residence. We compared the results of our analysis of the field data to the conditions and draw patterns established in the current U.S. Department of Energy (DOE) test procedure for residential water heaters. The results show a higher number of smaller draws at lower flow rates than used in the test procedure. The data from which the draw patterns were developed were obtained from 12 separate field studies. This report describes the ways in which we managed, cleaned, and analyzed the data and the results of our data analysis. After preparing the data, we used the complete data set to analyze inlet and outlet water temperatures. Then we divided the data into three clusters reflecting house configurations that demonstrated small, medium, or large median daily hot water use. We developed the three clusters partly to reflect efforts of the ASHRAE standard project committee (SPC) 118.2 to revise the test procedure for residential water heaters to incorporate a range of draw patterns. ASHRAE SPC 118.2 has identified the need to separately evaluate at least three, and perhaps as many as five, different water heater capacities. We analyzed the daily hot water use data within each cluster in terms of volume and number of hot water draws. The daily draw patterns in each cluster were characterized using distributions for volume of draws, duration of draws, time since previous draw, and flow rates.

  11. Water Impacts of the Electricity Sector (Presentation)

    SciTech Connect (OSTI)

    Macknick, J.

    2012-06-01T23:59:59.000Z

    This presentation discusses the water impacts of the electricity sector. Nationally, the electricity sector is a major end-user of water. Water issues affect power plants throughout the nation.

  12. STATE OF CALIFORNIA SOLAR DOMESTIC HOT WATER SYSTEMS (SDHW)

    E-Print Network [OSTI]

    attached CEC F-Chart) # of Collectors in System Collector Size Solar Tank Volume (gallons) ß150(j)1B piping shall be insulated. ß150(j)4: Solar water-heating system and/or/collectors are certifiedSTATE OF CALIFORNIA SOLAR DOMESTIC HOT WATER SYSTEMS (SDHW) CEC- CF-6R-MECH-02 (Revised 08

  13. Solar Hot Water Heater Industry in Barbados

    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 onYouTube YouTube Note: Since the.pdfBreakingMayDepartment of Energy Ready,SmartEnergyEnergy ResourceSolar Hot

  14. CPS Energy- Solar Hot Water Rebate Program

    Broader source: Energy.gov [DOE]

    As part of a larger program designed to reduce electricity demand within its service territory, CPS Energy now offers rebates for solar water heaters to its customers. In general, any CPS Energy...

  15. Sources of Water Surface water and groundwater are present throughout

    E-Print Network [OSTI]

    MacAdam, Keith

    Sources of Water Surface water and groundwater are present throughout Kentucky's 39,486 square miles. Surface water occurs as rivers, streams, ponds, lakes, and wetlands. Ground- water occurs underlain by soluble carbonate rocks (for example, limestone). Water Supply ∑ Approximately 49 inches

  16. Performance Monitoring of Residential Hot Water Distribution Systems

    SciTech Connect (OSTI)

    Liao, Anna; Lanzisera, Steven; Lutz, Jim; Fitting, Christian; Kloss, Margarita; Stiles, Christopher

    2014-08-11T23:59:59.000Z

    Current water distribution systems are designed such that users need to run the water for some time to achieve the desired temperature, wasting energy and water in the process. We developed a wireless sensor network for large-scale, long time-series monitoring of residential water end use. Our system consists of flow meters connected to wireless motes transmitting data to a central manager mote, which in turn posts data to our server via the internet. This project also demonstrates a reliable and flexible data collection system that could be configured for various other forms of end use metering in buildings. The purpose of this study was to determine water and energy use and waste in hot water distribution systems in California residences. We installed meters at every end use point and the water heater in 20 homes and collected 1s flow and temperature data over an 8 month period. For a typical shower and dishwasher events, approximately half the energy is wasted. This relatively low efficiency highlights the importance of further examining the energy and water waste in hot water distribution systems.

  17. DOE Zero Energy Ready Home Solar Hot Water-Ready Checklist |...

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

    Solar Hot Water-Ready Checklist DOE Zero Energy Ready Home Solar Hot Water-Ready Checklist DOE Zero Energy Ready Home National Program encourages, but does not require,...

  18. Pressurized water nuclear reactor system with hot leg vortex mitigator

    DOE Patents [OSTI]

    Lau, Louis K. S. (Monroeville, PA)

    1990-01-01T23:59:59.000Z

    A pressurized water nuclear reactor system includes a vortex mitigator in the form of a cylindrical conduit between the hot leg conduit and a first section of residual heat removal conduit, which conduit leads to a pump and a second section of residual heat removal conduit leading back to the reactor pressure vessel. The cylindrical conduit is of such a size that where the hot leg has an inner diameter D.sub.1, the first section has an inner diameter D.sub.2, and the cylindrical conduit or step nozzle has a length L and an inner diameter of D.sub.3 ; D.sub.3 /D.sub.1 is at least 0.55, D.sub.2 is at least 1.9, and L/D.sub.3 is at least 1.44, whereby cavitation of the pump by a vortex formed in the hot leg is prevented.

  19. Comparison Between TRNSYS Software Simulation and F-Chart Program on Solar Domestic Hot Water System

    E-Print Network [OSTI]

    Haberl, J. S.; Baltazar, J. C.; Mao, C.

    2012-01-01T23:59:59.000Z

    This study presents the accuracy test of a TRNSYS Solar Domestic Hot Water (SDHW) System simulation. The testing is based on comparing the results with the F-Chart software. The selected system to carry out the tests was the Active Solar Domestic...

  20. Comparison Between TRNSYS Software Simulation and F-Chart Program on Solar Domestic Hot Water System†

    E-Print Network [OSTI]

    Haberl, J. S.; Baltazar, J. C.; Mao, C.

    2012-01-01T23:59:59.000Z

    This study presents the accuracy test of a TRNSYS Solar Domestic Hot Water (SDHW) System simulation. The testing is based on comparing the results with the F-Chart software. The selected system to carry out the tests was the Active Solar Domestic...

  1. Pilot Phase of a Field Study to Determine Waste of Water and Energy in Residential Hot-Water Distribution Systems

    E-Print Network [OSTI]

    Lutz, Jim

    2012-01-01T23:59:59.000Z

    end use point, at the water heater in one second intervalsand monitoring at the water heater and hot water end uses.of water at the trunk (water heater) and twigs (individual

  2. Overheating in Hot Water- and Steam-Heated Multifamily Buildings

    SciTech Connect (OSTI)

    Dentz, J.; Varshney, K.; Henderson, H.

    2013-10-01T23:59:59.000Z

    Apartment temperature data have been collected from the archives of companies that provide energy management systems (EMS) to multifamily buildings in the Northeast U.S. The data have been analyzed from more than 100 apartments in eighteen buildings where EMS systems were already installed to quantify the degree of overheating. This research attempts to answer the question, 'What is the magnitude of apartment overheating in multifamily buildings with central hot water or steam heat?' This report provides valuable information to researchers, utility program managers and building owners interested in controlling heating energy waste and improving resident comfort. Apartment temperature data were analyzed for deviation from a 70 degrees F desired setpoint and for variation by heating system type, apartment floor level and ambient conditions. The data shows that overheating is significant in these multifamily buildings with both hot water and steam heating systems.

  3. DOE ZERH Webinar: Efficient Hot Water Distribution II: How to Get it Right

    Broader source: Energy.gov [DOE]

    Zero Energy Ready Homes include critical systems to ensure both energy efficiency and performance.† Hot water distribution is one of these critical systems Ė affecting energy use , water...

  4. DOE ZERH Webinar: Efficient Hot Water Distribution I: What's at Stake

    Broader source: Energy.gov [DOE]

    Zero Energy Ready Homes include critical systems to ensure both energy efficiency and performance.† Hot water distribution is one of these critical systems Ė affecting energy use , water...

  5. Design of a high temperature hot water central heating system

    SciTech Connect (OSTI)

    Beaumont, E.L.; Johnson, R.C.; Weaver, J.M.

    1981-11-01T23:59:59.000Z

    The paper reviews the conceptual design of a central heating system at Los Alamos Scientific Laboratory. The resource considered for this heating system design was hot dry rock geothermal energy. Design criteria were developed to ensure reliability of energy supply, to provide flexibility for adaptation to multiple energy resources, to make optimum use of existing equipment and to minimize reinvestment cost. A variable temperature peaking high temperature water system was selected for this purpose.

  6. Applicability of Related Data, Algorithms, and Models to the Simulation of Ground-Coupled Residential Hot Water Piping in California

    E-Print Network [OSTI]

    Warner, J.L.

    2009-01-01T23:59:59.000Z

    the temperature of the residual water encountered by theof hot water and the residual water might occur: (1) thehot water might drive the residual water through the piping

  7. Reduce Hot Water Use for Energy Savings | Department of Energy

    Energy Savers [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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you sure you wantJoin us for| DepartmentReduce Hot Water Use for Energy Savings

  8. Solar Hot Water Heater Industry in Barbados | Department of Energy

    Office of Environmental Management (EM)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently AskedEnergyIssues DOE's Nuclear EnergySmart Meters and|WaterEnergyFieldHot

  9. Realistic Hot Water Draw Specification for Rating Solar Water Heaters: Preprint

    SciTech Connect (OSTI)

    Burch, J.

    2012-06-01T23:59:59.000Z

    In the United States, annual performance ratings for solar water heaters are simulated, using TMY weather and specified water draw. A more-realistic ratings draw is proposed that eliminates most bias by improving mains inlet temperature and by specifying realistic hot water use. This paper outlines the current and the proposed draws and estimates typical ratings changes from draw specification changes for typical systems in four cities.

  10. Targeted removal of ant colonies in ecological experiments, using hot water

    E-Print Network [OSTI]

    . An automobile heater fan powered from a 12-v battery provided a draft. Dual bilge pumps pumped water from a large tank through a long coil of copper tubing within the kiln to produce 4 to 5 l. of hot water perTargeted removal of ant colonies in ecological experiments, using hot water Walter R. Tschinkela

  11. INSTALLATION CERTIFICATE CF-6R-MECH-01 Domestic Hot Water (DHW) (Page 1 of 2)

    E-Print Network [OSTI]

    storage water heaters (rated input of greater than 75,000 Btu/hr), list Recovery Efficiency (RE), Thermal; and Pipe insulation for steam hydronic heating systems or hot water systems >15 psi, meets the requirements Dwelling Units (required for prescriptive) TO COMPLY - ALL BOXES MUST BE CHECKED All hot water piping

  12. Evaporative water losses of exercising sheep in neutral and hot climates

    E-Print Network [OSTI]

    Paris-Sud XI, Universitť de

    Evaporative water losses of exercising sheep in neutral and hot climates T Othman KG Johnson, DW, Australia Hot climates require an accelerated water loss to allowed for thermoregulation (Rai et al, 1979, Trop Anim Hlth Prod, 11, 51-56). The water losses associated with locomotion should be greater

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

    Open Energy Info (EERE)

    Methods Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Pattern Of Shallow Ground Water Flow At Mount Princeton Hot Springs,...

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

    Open Energy Info (EERE)

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

  15. home power 114 / august & september 2006 in Solar Hot Water

    E-Print Network [OSTI]

    Knowles, David William

    : Heliotrope Thermal DTT-84 Solar Collectors: Two Heliodyne Gobi 410, 4 x 10 ft. Cold Supply In Hot to House

  16. Applications of Commercial Heat Pump Water Heaters in Hot, Humid Climates

    E-Print Network [OSTI]

    Johnson, K. F.; Shedd, A. C.

    Heat pump water heaters can provide high-efficiency water heating and supplemental space cooling and dehumidification in commercial buildings throughout the United States. They are particularly attractive in hot, humid areas where cooling loads...

  17. "Hot Water" in Lassen Volcanic National Park--Fumaroles, Steaming Ground, and Boiling Mudpots

    E-Print Network [OSTI]

    Torgersen, Christian

    "Hot Water" in Lassen Volcanic National Park-- Fumaroles, Steaming Ground, and Boiling Mudpots U, ydrothermal (hot water) and steaming ground. These features are re- lated to active volcanism, the largest fumarole (steam and volcanic-gas vent) in the park. The temperature of the high-velocity steam

  18. Commissioning the Domestic Hot Water System on a Large University Campus: A Case Study

    E-Print Network [OSTI]

    Chen, H.; Bensouda, N.; Claridge, D.; Bruner, H.

    2004-01-01T23:59:59.000Z

    was to investigate the causes of these problems and help determine how to best operate the system. It was found that reported problems of low flows, low temperatures and long hot water lag time resulted from reverse flows and no hot water circulation caused by: 1...

  19. DESIGN AND ANALYSIS OF THE SNS CCL HOT MODEL WATER COOLING SYSTEM USING THE SINDA/FLUINT NETWORK MODELING TOOL

    SciTech Connect (OSTI)

    C. AMMERMAN; J. BERNARDIN

    1999-11-01T23:59:59.000Z

    This report presents results for design and analysis of the hot model water cooling system for the Spallation Neutron Source (SNS) coupled-cavity linac (CCL). The hot model, when completed, will include segments for both the CCL and coupled-cavity drift-tube linac (CCDTL). The scope of this report encompasses the modeling effort for the CCL portion of the hot model. This modeling effort employed the SINDA/FLUINT network modeling tool. This report begins with an introduction of the SNS hot model and network modeling using SINDA/FLUINT. Next, the development and operation of the SINDA/FLUINT model are discussed. Finally, the results of the SINDA/FLUINT modeling effort are presented and discussed.

  20. Validation of a Hot Water Distribution Model Using Laboratory and Field Data

    SciTech Connect (OSTI)

    Backman, C.; Hoeschele, M.

    2013-07-01T23:59:59.000Z

    Characterizing the performance of hot water distribution systems is a critical step in developing best practice guidelines for the design and installation of high performance hot water systems. Developing and validating simulation models is critical to this effort, as well as collecting accurate input data to drive the models. In this project, the ARBI team validated the newly developed TRNSYS Type 604 pipe model against both detailed laboratory and field distribution system performance data. Validation efforts indicate that the model performs very well in handling different pipe materials, insulation cases, and varying hot water load conditions. Limitations of the model include the complexity of setting up the input file and long simulation run times. In addition to completing validation activities, this project looked at recent field hot water studies to better understand use patterns and potential behavioral changes as homeowners convert from conventional storage water heaters to gas tankless units. Based on these datasets, we conclude that the current Energy Factor test procedure overestimates typical use and underestimates the number of hot water draws. This has implications for both equipment and distribution system performance. Gas tankless water heaters were found to impact how people use hot water, but the data does not necessarily suggest an increase in usage. Further study in hot water usage and patterns is needed to better define these characteristics in different climates and home vintages.

  1. Performance Evaluation of Hot Water Efficiency Plumbing System Using Thermal Valve

    E-Print Network [OSTI]

    Cha, K. S.; Park, M. S.; Seo, H. Y.

    hot water piping system, Thermo controlled valve, Circulation, Mixing water pipe, Recirculation water pipe INTRODUCTION Finding ways to conserve energy while heating a building?s water supply can be approached from a number of angles. Still...?s disadvantage is that so much water is wasted until the optimal tap temperature is reached.(6) We tried to solve this problem by developing a water-saving hot water plumbing system that utilizes a thermo-controlled valve. The goal was to not allow...

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

    E-Print Network [OSTI]

    Torgersen, Christian

    ). Conditions in Hot Creek can change very quickly. These fish--caught in a burst of high-temperature water" or intermittently spurting very hot, sediment-laden water as high as 6 feet (2 m) above the stream surface. At timesBoiling Water at Hot Creek--The Dangerous and Dynamic Thermal Springs in California's Long Valley

  3. Solar heating and hot water system installed at Shoney's Restaurant, North Little Rock, Arkansas. Final report

    SciTech Connect (OSTI)

    None

    1980-08-01T23:59:59.000Z

    The solar heating system is designed to supply a major portion of the space and water heating requirements for a newly built Shoney's Big Boy Restaurant which was installed with completion occurring in December 1979. The restaurant has a floor space of approximately 4,650 square feet and requires approximately 1500 gallons of hot water daily. The solar energy system consists of 1,428 square feet of Chamberlain flat plate liquid collector subsystem, and a 1500 gallon storage subsystem circulating hot water producing 321 x 10/sup 6/ Btu/yr (specified) building heating and hot water heating. Designer - Energy Solutions, Incorporated. Contractor - Stephens Brothers, Incorporated. This report includes extracts from site files, specification references for solar modifications to existing building heating and hot water systems, drawings installation, operation and maintenance instructions.

  4. Final report : testing and evaluation for solar hot water reliability.

    SciTech Connect (OSTI)

    Caudell, Thomas P. (University of New Mexico, Albuquerque, NM) [University of New Mexico, Albuquerque, NM; He, Hongbo (University of New Mexico, Albuquerque, NM) [University of New Mexico, Albuquerque, NM; Menicucci, David F. (Building Specialists, Inc., Albuquerque, NM) [Building Specialists, Inc., Albuquerque, NM; Mammoli, Andrea A. (University of New Mexico, Albuquerque, NM) [University of New Mexico, Albuquerque, NM; Burch, Jay (National Renewable Energy Laboratory, Golden CO) [National Renewable Energy Laboratory, Golden CO

    2011-07-01T23:59:59.000Z

    Solar hot water (SHW) systems are being installed by the thousands. Tax credits and utility rebate programs are spurring this burgeoning market. However, the reliability of these systems is virtually unknown. Recent work by Sandia National Laboratories (SNL) has shown that few data exist to quantify the mean time to failure of these systems. However, there is keen interest in developing new techniques to measure SHW reliability, particularly among utilities that use ratepayer money to pay the rebates. This document reports on an effort to develop and test new, simplified techniques to directly measure the state of health of fielded SHW systems. One approach was developed by the National Renewable Energy Laboratory (NREL) and is based on the idea that the performance of the solar storage tank can reliably indicate the operational status of the SHW systems. Another approach, developed by the University of New Mexico (UNM), uses adaptive resonance theory, a type of neural network, to detect and predict failures. This method uses the same sensors that are normally used to control the SHW system. The NREL method uses two additional temperature sensors on the solar tank. The theories, development, application, and testing of both methods are described in the report. Testing was performed on the SHW Reliability Testbed at UNM, a highly instrumented SHW system developed jointly by SNL and UNM. The two methods were tested against a number of simulated failures. The results show that both methods show promise for inclusion in conventional SHW controllers, giving them advanced capability in detecting and predicting component failures.

  5. Water and Energy Savings using Demand Hot Water Recirculating Systems in Residential Homes: A Case Study of Five Homes in Palo Alto, California

    SciTech Connect (OSTI)

    Ally, M.R.

    2002-11-14T23:59:59.000Z

    This report summarizes a preliminary study aimed at estimating the potential of saving potable water, (and the electrical energy used to heat it), that is presently lost directly to the drain while occupants wait for hot water to arrive at the faucet (point of use). Data were collected from five single-family homes in Palo Alto, California. Despite the small sample size in this study, the results make a compelling case for retrofitting homes with hot water recirculation systems to eliminate unnecessary wastage of water at the point of use. Technical as well as behavioral and attitudinal changes towards water conservation are necessary for a fulfilling and successful conservation effort. This report focuses on the technical issues, but behavioral issues are also noted, which may be factored into future studies involving local and state governments and utility companies.

  6. 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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem Not Found Item Not Found TheHot electron dynamics in graphene by Meng-Chieh Ling A

  7. Design and Experiments of a Solar Low-temperature Hot Water Floor Radiant Heating System†

    E-Print Network [OSTI]

    Wu, Z.; Li, D.

    2006-01-01T23:59:59.000Z

    The solar low-temperature hot water floor radiant heating system combines solar energy heating with floor radiant heating. This kind of environmental heating way not only saves fossil resources and reduces pollution, but also makes people feel more...

  8. Design and Experiments of a Solar Low-temperature Hot Water Floor Radiant Heating System

    E-Print Network [OSTI]

    Wu, Z.; Li, D.

    2006-01-01T23:59:59.000Z

    The solar low-temperature hot water floor radiant heating system combines solar energy heating with floor radiant heating. This kind of environmental heating way not only saves fossil resources and reduces pollution, but also makes people feel more...

  9. Rock-Water Interactions in the Fenton Hill, New Mexico, Hot Dry...

    Open Energy Info (EERE)

    to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Rock-Water Interactions in the Fenton Hill, New Mexico, Hot Dry Rock Geothermal Systems I. Fluid...

  10. Rock-Water Interactions in the Fenton Hill, New Mexico, Hot Dry...

    Open Energy Info (EERE)

    to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Rock-Water Interactions in the Fenton Hill, New Mexico, Hot Dry Rock Geothermal Systems II....

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

    Open Energy Info (EERE)

    Rock-Water Interactions In Hot Dry Rock Geothermal Systems- Field Investigations Of In Situ Geochemical Behavior Jump to: navigation, search OpenEI Reference LibraryAdd to library...

  12. Hot water decontamination of beef carcasses to increase microbiological safety and shelf-life

    E-Print Network [OSTI]

    Barakate, Michelle Lee

    1991-01-01T23:59:59.000Z

    : -:r . ~ &:: ? ri:~ 4 c:r l, &, ?a??. . ' ' !"-' &! ~i i 4?'&. " ~ li r, '?Pil ril i '. ' rl iit'~'. ~a', '. ''+, I";= t I t h( ii il HOT WATER DECONTAMINATION OF BEEF CARCASSES TO INCREASE MICROBIOLOGICAL SAFETY AND SHELF-LIFE A Thesis... by MICHELLE LEE BARKATE Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 1991 Major Subject: Food Science and Technology HOT WATER DECONTAMINATION...

  13. TYPICAL HOT WATER DRAW PATTERNS BASED ON FIELD DATA

    E-Print Network [OSTI]

    Lutz, Jim

    2014-01-01T23:59:59.000Z

    for Rating Residential Water Heaters. Atlanta, GA: ASHRAE,for Residential Water Heaters, Direct Heating Equipment, andthe Energy Consumption of Water Heaters. Title 10 Code of

  14. Recovery of energy from geothermal brine and other hot water sources

    DOE Patents [OSTI]

    Wahl, III, Edward F. (Claremont, CA); Boucher, Frederic B. (San Juan Capistrano, CA)

    1981-01-01T23:59:59.000Z

    Process and system for recovery of energy from geothermal brines and other hot water sources, by direct contact heat exchange between the brine or hot water, and an immiscible working fluid, e.g. a hydrocarbon such as isobutane, in a heat exchange column, the brine or hot water therein flowing countercurrent to the flow of the working fluid. The column can be operated at subcritical, critical or above the critical pressure of the working fluid. Preferably, the column is provided with a plurality of sieve plates, and the heat exchange process and column, e.g. with respect to the design of such plates, number of plates employed, spacing between plates, area thereof, column diameter, and the like, are designed to achieve maximum throughput of brine or hot water and reduction in temperature differential at the respective stages or plates between the brine or hot water and the working fluid, and so minimize lost work and maximize efficiency, and minimize scale deposition from hot water containing fluid including salts, such as brine. Maximum throughput approximates minimum cost of electricity which can be produced by conversion of the recovered thermal energy to electrical energy.

  15. Solar heating, cooling and domestic hot water system installed at Columbia Gas System Service Corp. , Columbus, Ohio. Final report

    SciTech Connect (OSTI)

    None

    1980-11-01T23:59:59.000Z

    The Solar Energy System located at the Columbia Gas Corporation, Columbus, Ohio, has 2978 ft/sup 2/ of Honeywell single axis tracking, concentrating collectors and provides solar energy for space heating, space cooling and domestic hot water. A 1,200,000 Btu/h Bryan water-tube gas boiler provides hot water for space heating. Space cooling is provided by a 100 ton Arkla hot water fired absorption chiller. Domestic hot water heating is provided by a 50 gallon natural gas domestic storage water heater. Extracts are included from the site files, specification references, drawings, installation, operation and maintenance instructions.

  16. Water, Vapor, and Salt Dynamics in a Hot Repository

    SciTech Connect (OSTI)

    Bahrami, Davood; Danko, George [Department of Mining Engineering, University of Nevada, Reno, 1664 N. Virginia St., Reno, NV, 89557 (United States); Walton, John [Department of Civil Engineering, University of Texas at El Paso, 500 W. University, El Paso, TX, 79968 (United States)

    2007-07-01T23:59:59.000Z

    The purpose of this paper is to report the results of a new model study examining the high temperature nuclear waste disposal concept at Yucca Mountain using MULTIFLUX, an integrated in-drift- and mountain-scale thermal-hydrologic model. The results show that a large amount of vapor flow into the drift is expected during the period of above-boiling temperatures. This phenomenon makes the emplacement drift a water/moisture attractor during the above-boiling temperature operation. The evaporation of the percolation water into the drift gives rise to salt accumulation in the rock wall, especially in the crown of the drift for about 1500 years in the example. The deposited salts over the drift footprint, almost entirely present in the fractures, may enter the drift either by rock fall or by water drippage. During the high temperature operation mode, the barometric pressure variation creates fluctuating relative humidity in the emplacement drift with a time period of approximately 10 days. Potentially wet and dry conditions and condensation on salt-laden drift wall sections may adversely affect the storage environment. Salt accumulations during the above-boiling temperature operation must be sufficiently addressed to fully understand the waste package environment during the thermal period. Until the questions are resolved, a below-boiling repository design is favored where the Alloy-22 will be less susceptible to localized corrosion. (authors)

  17. Measured electric hot water standby and demand loads from Pacific Northwest homes

    SciTech Connect (OSTI)

    Pratt, R.G.; Ross, B.A.

    1991-11-01T23:59:59.000Z

    The Bonneville Power Administration began the End-Use Load and Consumer Assessment Program (ELCAP) in 1983 to obtain metered hourly end-use consumption data for a large sample of new and existing residential and commercial buildings in the Pacific Northwest. Loads and load shapes from the first 3 years of data fro each of several ELCAP residential studies representing various segments of the housing population have been summarized by Pratt et al. The analysis reported here uses the ELCAP data to investigate in much greater detail the relationship of key occupant and tank characteristics to the consumption of electricity for water heating. The hourly data collected provides opportunities to understand electricity consumption for heating water and to examine assumptions about water heating that are critical to load forecasting and conservation resource assessments. Specific objectives of this analysis are to: (A) determine the current baseline for standby heat losses by determining the standby heat loss of each hot water tank in the sample, (B) examine key assumptions affecting standby heat losses such as hot water temperatures and tank sizes and locations, (C) estimate, where possible, impacts on standby heat losses by conservation measures such as insulating tank wraps, pipe wraps, anticonvection valves or traps, and insulating bottom boards, (D) estimate the EF-factors used by the federal efficiency standards and the nominal R-values of the tanks in the sample, (E) develop estimates of demand for hot water for each home in the sample by subtracting the standby load from the total hot water load, (F) examine the relationship between the ages and number of occupants and the hot water demand, (G) place the standby and demand components of water heating electricity consumption in perspective with the total hot water load and load shape.

  18. Our Environment in Hot Water: Comparing Water Heaters, A Life Cycle Approach Comparing Tank and Tankless Water Heaters in California

    SciTech Connect (OSTI)

    Lu, Alison; McMahon, James; Masanet, Eric; Lutz, Jim

    2008-08-13T23:59:59.000Z

    Residential water heating is a large source of energy use in California homes. This project took a life cycle approach to comparing tank and tankless water heaters in Northern and Southern California. Information about the life cycle phases was calculated using the European Union?s Methodology study for EcoDesign of Energy-using Products (MEEUP) and the National Renewable Energy Laboratory?s Life Cycle Inventory (NREL LCI) database. In a unit-to-unit comparison, it was found that tankless water heaters would lessen impacts of water heating by reducing annual energy use by 2800 MJ/year (16% compared to tank), and reducing global warming emissions by 175 kg CO2 eqv./year (18% reduction). Overall, the production and combustion of natural gas in the use phase had the largest impact. Total waste, VOCs, PAHs, particulate matter, and heavy-metals-to-air categories were also affected relatively strongly by manufacturing processes. It was estimated that tankless water heater users would have to use 10 more gallons of hot water a day (an increased usage of approximately 20%) to have the same impact as tank water heaters. The project results suggest that if a higher percentage of Californians used tankless water heaters, environmental impacts caused by water heating would be smaller.

  19. Air Pollution Control Regulations: No. 13- Particulate Emissions from Fossil Fuel Fired Steam or Hot Water Generating Units (Rhode Island)

    Broader source: Energy.gov [DOE]

    The purpose of this regulation is to limit emissions of particulate matter from fossil fuel fired and wood-fired steam or hot water generating units.

  20. FEMP Solar Hot Water Calculator | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluating A PotentialJumpGerman Aerospace CenterEverlightOpenEyeforenergyFEMSolar Hot

  1. Savings Project: Insulate Hot Water Pipes for Energy Savings | Department

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del Sol HomeFacebook Twitter Principal InvestigatorsSave Energy onof Energy Hot

  2. Reduce Hot Water Use for Energy Savings | Department of Energy

    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 onYouTube YouTube Note: Since the.pdfBreakingMay 2015 < prevQuick Guide:U.N.June 8,Past OpportunitiesRedAirReduce Hot

  3. Sacramento Ordinance to Waive Fees for Solar Hot Water

    Broader source: Energy.gov [DOE]

    An ordinance suspending for the calendar years 2007-2009 all fees related to installations of solar water heaters on existing residences.

  4. Ocala Utility Services- Solar Hot Water Heating Rebate Program

    Broader source: Energy.gov [DOE]

    The Solar Water Heater Rebate Program is offered to residential retail electric customers by the City of Ocala Utility Services. Interested customers must complete an application and receive...

  5. NV Energy (Northern Nevada)- Solar Hot Water Incentive Program

    Broader source: Energy.gov [DOE]

    NV Energy is providing an incentive for its residential customers, small commercial, nonprofit, school and other public customers to install solar water heaters on their homes and facilities. ...

  6. Microwave vs. Electric Kettle: Which Appliance Is in Hot Water...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    is more efficient? Tell Us Addthis Microwave or electric kettle, which appliance should win the honor of heating your water? | Graphic by Stacy Buchanan, National Renewable Energy...

  7. HOT WATER IN THE INNER 100 AU OF THE CLASS 0 PROTOSTAR NGC 1333 IRAS2A

    SciTech Connect (OSTI)

    Visser, Ruud; Bergin, Edwin A. [Department of Astronomy, University of Michigan, 500 Church Street, Ann Arbor, MI 48109-1042 (United States); Jorgensen, Jes K. [Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen O (Denmark); Kristensen, Lars E.; Van Dishoeck, Ewine F., E-mail: visserr@umich.edu [Leiden Observatory, Leiden University, P.O. Box 9513, 2300 RA Leiden (Netherlands)

    2013-05-20T23:59:59.000Z

    Evaporation of water ice above 100 K in the inner few 100 AU of low-mass embedded protostars (the so-called hot core) should produce quiescent water vapor abundances of {approx}10{sup -4} relative to H{sub 2}. Observational evidence so far points at abundances of only a few 10{sup -6}. However, these values are based on spherical models, which are known from interferometric studies to be inaccurate on the relevant spatial scales. Are hot cores really that much drier than expected, or are the low abundances an artifact of the inaccurate physical models? We present deep velocity-resolved Herschel-HIFI spectra of the 3{sub 12}-3{sub 03} lines of H{sub 2}{sup 16}O and H{sub 2}{sup 18}O (1097 GHz, E{sub u}/k = 249 K) in the low-mass Class 0 protostar NGC 1333 IRAS2A. A spherical radiative transfer model with a power-law density profile is unable to reproduce both the HIFI data and existing interferometric data on the H{sub 2}{sup 18}O 3{sub 13}-2{sub 20} line (203 GHz, E{sub u}/k = 204 K). Instead, the HIFI spectra likely show optically thick emission from a hot core with a radius of about 100 AU. The mass of the hot core is estimated from the C{sup 18}O J = 9-8 and 10-9 lines. We derive a lower limit to the hot water abundance of 2 Multiplication-Sign 10{sup -5}, consistent with the theoretical predictions of {approx}10{sup -4}. The revised HDO/H{sub 2}O abundance ratio is 1 Multiplication-Sign 10{sup -3}, an order of magnitude lower than previously estimated.

  8. Solar heating and hot water system installed at office building, One Solar Place, Dallas, Texas. Final report

    SciTech Connect (OSTI)

    Not Available

    1980-06-01T23:59:59.000Z

    This document is the Final Report of the Solar Energy System Installed at the First Solar Heated Office Building, One Solar Place, Dallas, Texas. The Solar System was designed to provide 87 percent of the space heating needs, 100 percent of the potable hot water needs and is sized for future absorption cooling. The collection subsystem consists of 28 Solargenics, series 76, flat plate collectors with a total area of 1596 square feet. The solar loop circulates an ethylene glycol-water solution through the collectors into a hot water system heat exchanger. The hot water storage subsystem consists of a heat exchanger, two 2300 gallon concrete hot water storage tanks with built in heat exchangers and a back-up electric boiler. The domestic hot water subsystem sends hot water to the 10,200 square feet floor area office building hot water fixtures. The building cold water system provides make-up to the solar loop, the heating loop, and the hot water concrete storage tanks. The design, construction, cost analysis, operation and maintenance of the solar system are described. The system became operational July 11, 1979.

  9. Solar Water Heating: What's Hot and What's Not†

    E-Print Network [OSTI]

    Stein, J.

    1992-01-01T23:59:59.000Z

    A handful of electric utilities in the United States now pay incentives to their customers to install solar water heaters or are developing programs to do so. The solar water heater incentives are part of a broader utility demand-side management...

  10. Solar Water Heating: What's Hot and What's Not

    E-Print Network [OSTI]

    Stein, J.

    A handful of electric utilities in the United States now pay incentives to their customers to install solar water heaters or are developing programs to do so. The solar water heater incentives are part of a broader utility demand-side management...

  11. Opportunities for utility involvement with solar domestic hot water

    SciTech Connect (OSTI)

    Carlisle, N.; Christensen, C. (National Renewable Energy Lab., Golden, CO (United States)); Barrett, L. (Barrett Consulting Associates, Inc., Colorado Springs, CO (United States))

    1992-05-01T23:59:59.000Z

    Solar water heating is one of a number of options that can be considered under utility demand-side management (DSM) programs. Utilities perceive a range of potential benefits for solar water heating in terms of customer service, energy conservation, load management, environmental enhancement, and public relations. The solar industry may benefit from utility marketing efforts, economies of scale, added credibility, financing options, and long-term maintenance arrangements. This paper covers three topics: (1) the energy and demand impacts of solar water heating on utility load profiles based on the results of four studies in the literature, (2) the results of workshops sponsored by the National Renewable Energy Laboratory (NREL) to identify key issues faced by utilities in considering residential solar water heating as a DSM option, (3) several current or planned utility programs to promote solar water heating. 7 refs.

  12. Hot water tank for use with a combination of solar energy and heat-pump desuperheating

    DOE Patents [OSTI]

    Andrews, John W. (Sag Harbor, NY)

    1983-06-28T23:59:59.000Z

    A water heater or system which includes a hot water tank having disposed therein a movable baffle to function as a barrier between the incoming volume of cold water entering the tank and the volume of heated water entering the tank which is heated by the circulation of the cold water through a solar collector and/or a desuperheater of a heat pump so as to optimize the manner in which heat is imparted to the water in accordance to the demand on the water heater or system. A supplemental heater is also provided and it is connected so as to supplement the heating of the water in the event that the solar collector and/or desuperheater cannot impart all of the desired heat input into the water.

  13. Hot water tank for use with a combination of solar energy and heat-pump desuperheating

    DOE Patents [OSTI]

    Andrews, J.W.

    1980-06-25T23:59:59.000Z

    A water heater or system is described which includes a hot water tank having disposed therein a movable baffle to function as a barrier between the incoming volume of cold water entering the tank and the volume of heated water entering the tank which is heated by the circulation of the cold water through a solar collector and/or a desuperheater of a heat pump so as to optimize the manner in which heat is imparted to the water in accordance to the demand on the water heater or system. A supplemental heater is also provided and it is connected so as to supplement the heating of the water in the event that the solar collector and/or desuperheater cannot impart all of the desired heat input into the water.

  14. New Hampshire Electric Co-Op- Solar Hot Water

    Broader source: Energy.gov [DOE]

    New Hampshire Electric Co-Op (NHEC) offers rebates to residential customers who install qualified solar water-heating systems. The rebate is equal to 20% of installed system costs, with a maximum...

  15. NV Energy (Southern Nevada)- Solar Hot Water Incentive Program

    Broader source: Energy.gov [DOE]

    NV Energy is providing an incentive for its residential customers to install solar water heaters on their homes. As of July 26, 2013, NV Energy electric customers in Southern Nevada who own their...

  16. Wind Power Answer In Times of Water Scarcity (Presentation)

    SciTech Connect (OSTI)

    Flowers, L.; Reategui, S.

    2010-05-25T23:59:59.000Z

    Strategic energy planning is paramount during times of dramatic population growth, global warming, increasing energy demands, and concerns over energy security, food security, and economic development. Recent concerns over water scarcity have moved the energy-water issue to the forefront of energy options discussions. This presentation describes the current water challenges in the United States and presents a case for wind energy as one way to mitigate the problem of water scarcity in several U.S. regions while providing a clean and sustainable economic future for America.

  17. Solar process heat technology in action: The process hot water system at the California Correctional Institution at Tehachapi

    SciTech Connect (OSTI)

    Hewett, R. (National Renewable Energy Lab., Golden, CO (United States)); Gee, R.; May, K. (Industrial Solar Technology, Arvada, CO (United States))

    1991-12-01T23:59:59.000Z

    Solar process heat technology relates to solar thermal energy systems for industry, commerce, and government. Applications include water preheating and heating, steam generation, process hot air, ventilation air heating, and refrigeration. Solar process heat systems are available for commercial use. At the present time, however, they are economically viable only in niche markets. This paper describes a functioning system in one such market. The California Department of Corrections (CDOC), which operates correctional facilities for the state of California, uses a solar system for providing hot water and space heating at the California Correctional Institute at Tehachapi (CCI/Tehachapi). CCI/Tehachapi is a 5100-inmate facility. The CDOC does not own the solar system. Rather, it buys energy from private investors who own the solar system located on CCI/Tehachapi property; this arrangement is part of a long-term energy purchase agreement. United Solar Technologies (UST) of Olympia Washington is the system operator. The solar system, which began operating in the fall of 1990, utilizes 2677 m{sup 2} (28,800 ft{sup 2}) of parabolic through solar concentrators. Thermal energy collected by the system is used to generate hot water for showers, kitchen operations, and laundry functions. Thermal energy collected by the system is also used for space heating. At peak operating conditions, the system is designed to meet approximately 80 percent of the summer thermal load. 4 figs., 4 tabs.

  18. Experimental comparison of hot water/propane injection to steam/propane injection for recovery of heavy oil†

    E-Print Network [OSTI]

    Nesse, Thomas

    2005-02-17T23:59:59.000Z

    , attempts have been made to inject hot water instead of steam. The results have all been rather poor, the major problem being low sweep efficiency. The hot water just doesn?t enhance oil recovery enough. Adding propane to the steam injected in the reservoir...

  19. Experimental comparison of hot water/propane injection to steam/propane injection for recovery of heavy oil

    E-Print Network [OSTI]

    Nesse, Thomas

    2005-02-17T23:59:59.000Z

    , attempts have been made to inject hot water instead of steam. The results have all been rather poor, the major problem being low sweep efficiency. The hot water just doesn?t enhance oil recovery enough. Adding propane to the steam injected in the reservoir...

  20. Solar heating and hot water system installed at St. Louis, Missouri. Final report

    SciTech Connect (OSTI)

    Not Available

    1980-04-01T23:59:59.000Z

    Information is provided on the solar heating and hot water system installed at the William Tao and Associates, Inc., office building in St. Louis, Missouri. The information consists of description, photos, maintenance and construction problems, final drawing, system requirements and manufacturer's component data. The solar system was designed to provide 50% of the hot water requirements and 45% of the space heating needs for a 900 square foot office space and drafting room. The solar facility has 252 square foot of glass tube concentrator collectors and a 1000 gallon steel storage tank buried below a concrete slab floor. Freeze protection is provided by a propylene glycol/water mixture in the collector loop. The collectors are roof mounted on a variable tilt array which is adjusted seasonally and is connected to the solar thermal storage tank by a tube-in-shell heat exchanger. Incoming city water is preheated through the solar energy thermal storage tank.

  1. Solar heating and hot water system installed at Charlotte Memorial Hospital, Charlotte, North Carolina. Final report

    SciTech Connect (OSTI)

    None

    1981-05-01T23:59:59.000Z

    Included in this report is detailed information regarding the design and installation of a heating and hot water system in a commercial application. This information includes descriptions of system and building, design philosophy, control logic operation modes, design and installation drawing and a brief description of problems encountered and their solutions.

  2. Trout in hot water Understanding the effects of climate change on ecosystems is a complex

    E-Print Network [OSTI]

    Brierley, Andrew

    Trout in hot water Understanding the effects of climate change on ecosystems is a complex business as we set out for the Hengill geothermal valley. You might think of Iceland as a cold, dark country up the breakdown of organic matter and nutrients are recycled more quickly, leading to more resources

  3. HOT PHENOL RNA EXTRACTION PROTOCOL 1) Set the water bath to 800

    E-Print Network [OSTI]

    Gill, Kulvinder

    HOT PHENOL RNA EXTRACTION PROTOCOL 1) Set the water bath to 800 C. 2) Make 50 mL Extraction bufferL SDS = 0.5 gm DEPC treated water = 43.2 mL Total = 50 mL 3) Add 50 mL phenol (pH = 4.7), in 50 mL extraction buffer (final concentration of 1:1). For small sample add 200 to 300ul of 1Extraction buffer: 1

  4. 2014 Water Power Program Peer Review: Hydropower Technologies, Compiled Presentations (Presentation)

    SciTech Connect (OSTI)

    Not Available

    2014-02-01T23:59:59.000Z

    This document represents a collection of all presentations given during the EERE Wind and Water Power Program's 2014 Hydropower Peer Review. The purpose of the meeting was to evaluate DOE-funded hydropower and marine and hydrokinetic R&D projects for their contribution to the mission and goals of the Water Power Program and to assess progress made against stated objectives.

  5. 2014 Water Power Program Peer Review: Marine and Hydrokinetic Technologies, Compiled Presentations (Presentation)

    SciTech Connect (OSTI)

    Not Available

    2014-02-01T23:59:59.000Z

    This document represents a collection of all presentations given during the EERE Wind and Water Power Program's 2014 Marine and Hydrokinetic Peer Review. The purpose of the meeting was to evaluate DOE-funded hydropower and marine and hydrokinetic R&D projects for their contribution to the mission and goals of the Water Power Program and to assess progress made against stated objectives.

  6. Measure Guideline: Combination Forced-Air Space and Tankless Domestic Hot Water Heating Systems

    SciTech Connect (OSTI)

    Rudd, A.

    2012-08-01T23:59:59.000Z

    This document describes design and application guidance for combination space and tankless domestic hot water heating systems (combination systems) used in residential buildings, based on field evaluation, testing, and industry meetings conducted by Building Science Corporation. As residential building enclosure improvements continue to drive heating loads down, using the same water heating equipment for both space heating and domestic water heating becomes attractive from an initial cost and space-saving perspective. This topic is applicable to single- and multi-family residential buildings, both new and retrofitted.

  7. Promising freeze protection alternatives in solar domestic hot water systems

    SciTech Connect (OSTI)

    Bradley, D.E.

    1997-12-31T23:59:59.000Z

    Since the gains associated with solar thermal energy technologies are comparatively small in relation to the required capital investment, it is vital to maximize conversion efficiency. While providing the necessary function of freeze protection, the heat exchanger commonly included in solar domestic water heating systems represents a system inefficiency. This thesis explores two alternate methods of providing freeze protection without resorting to a heat exchanger. Commonly, collectors are made of rigid copper tubes separated by copper or aluminum fins. Cracking damage can occur when water is allowed to freeze and expand inside the non compliant tubes. The possibility of making collectors out of an elastic material was investigated and shown to be effective. Since unlike copper, elastomers typically have low thermal conductivities, the standard collector performance prediction equations do not apply. Modified thermal performance prediction equations were developed which can be used for both low and high thermal conductivity materials to provide accurate predictions within a limited range of plate geometries. An elastomeric collector plate was then designed and shown to have comparable performance to a copper plate collector whose aperture area is approximately 33% smaller. Another options for providing freeze protection to an SDHW system is to turn it off during the winter. Choosing a three-season operating period means two things. First, the system will have different optimums such as slope and collector area. Second, the wintertime solar energy incident on the collector is unavailable for meeting a heating load. However, the system`s heat exchanger becomes unnecessary and removing it increases the amount of energy that arrives at the storage tank during those periods in which the system is operating.

  8. Low rank coal upgrading in a flow of hot water

    SciTech Connect (OSTI)

    Masato Morimoto; Hiroyuki Nakagawa; Kouichi Miura [Kyoto University, Kyoto (Japan). Department of Chemical Engineering

    2009-09-15T23:59:59.000Z

    Simultaneous hydrothermal degradation and extraction at around 350{sup o}C using flowing solvent as a reaction/extraction medium were proposed for upgrading brown coal, more specifically, for converting brown coal into several fractions having different molecular weight and chemical structure under mild conditions. When an Australian brown coal, Loy Yang coal, was treated by water at 350{sup o}C under 18 MPa, the coal was separated into four fractions: gaseous product by 8% yield, water-soluble extract at room temperature (soluble) by 23% yield, extract precipitates as solid at room temperature (deposit) by 23% yield, and residual coal (upgraded coal) by 46% yield on daf basis. The separation was found to be realized by in situ extraction of low-molecular-weight substances released from coal macromolecular structure and/or those generated by hydrothermal decomposition reactions at 350{sup o}C. The solid products obtained, deposit and upgraded coal, were characterized in detail to examine the possibility of their effective utilization as solid fuel and chemical feed stock. The upgraded coal showed higher heating value and higher gasification reactivity than the parent coal, indicating that the upgraded coal can be a better solid fuel than the parent coal. The solid extract, deposit, was found to show thermoplasticity at less than 200{sup o}C, suggesting the possibility of utilizing the deposit as a raw material of high performance carbon materials. Several variables affecting the performance of the proposed method are also examined in detail in this paper. 12 refs., 8 figs., 3 tabs.

  9. Sometimes hot water will have a "sour" smell, similar to that of an old damp rag. This smell often

    E-Print Network [OSTI]

    . Odor-causing bacteria live and thrive in warm water and can infest the water heater. The problem (approximately 160 degrees F) for 8 hours. This will kill the bacteria. (Caution: Be sure the water heater has#12;Sometimes hot water will have a "sour" smell, similar to that of an old damp rag. This smell

  10. Solar hot water system installed at Quality Inn, Key West, Florida. Final report

    SciTech Connect (OSTI)

    Not Available

    1980-04-01T23:59:59.000Z

    The solar energy hot water system installed in the Quality Inn, Key West, Florida, which consists of four buildings, is described. Three buildings are low-rise, two-story buildings containing 100 rooms. The fourth is a four-story building with 48 rooms. The solar system was designed to provide approximately 50% of the energy required for the domestic hot water system. The solar system consists of approximately 1400 ft/sup 2/ of flat plate collector, two 500 gal storage tanks, a circulating pump, and a controller. Operation of the system was begun in April 1978, and has continued to date with only three minor interruptions for pump repair. In the first year of operation, it was determined that the use of the solar facility resulted in 40% fuel savings.

  11. Evaluating Domestic Hot Water Distribution System Options With Validated Analysis Models

    SciTech Connect (OSTI)

    Weitzel, E.; Hoeschele, M.

    2014-09-01T23:59:59.000Z

    A developing body of work is forming that collects data on domestic hot water consumption, water use behaviors, and energy efficiency of various distribution systems. A full distribution system developed in TRNSYS has been validated using field monitoring data and then exercised in a number of climates to understand climate impact on performance. This study builds upon previous analysis modelling work to evaluate differing distribution systems and the sensitivities of water heating energy and water use efficiency to variations of climate, load, distribution type, insulation and compact plumbing practices. Overall 124 different TRNSYS models were simulated. Of the configurations evaluated, distribution losses account for 13-29% of the total water heating energy use and water use efficiency ranges from 11-22%. The base case, an uninsulated trunk and branch system sees the most improvement in energy consumption by insulating and locating the water heater central to all fixtures. Demand recirculation systems are not projected to provide significant energy savings and in some cases increase energy consumption. Water use is most efficient with demand recirculation systems, followed by the insulated trunk and branch system with a central water heater. Compact plumbing practices and insulation have the most impact on energy consumption (2-6% for insulation and 3-4% per 10 gallons of enclosed volume reduced). The results of this work are useful in informing future development of water heating best practices guides as well as more accurate (and simulation time efficient) distribution models for annual whole house simulation programs.

  12. Report on the analysis of field data relating to the reliability of solar hot water systems.

    SciTech Connect (OSTI)

    Menicucci, David F. (Building Specialists, Inc., Albuquerque, NM)

    2011-07-01T23:59:59.000Z

    Utilities are overseeing the installations of thousand of solar hot water (SHW) systems. Utility planners have begun to ask for quantitative measures of the expected lifetimes of these systems so that they can properly forecast their loads. This report, which augments a 2009 reliability analysis effort by Sandia National Laboratories (SNL), addresses this need. Additional reliability data have been collected, added to the existing database, and analyzed. The results are presented. Additionally, formal reliability theory is described, including the bathtub curve, which is the most common model to characterize the lifetime reliability character of systems, and for predicting failures in the field. Reliability theory is used to assess the SNL reliability database. This assessment shows that the database is heavily weighted with data that describe the reliability of SHW systems early in their lives, during the warranty period. But it contains few measured data to describe the ends of SHW systems lives. End-of-life data are the most critical ones to define sufficiently the reliability of SHW systems in order to answer the questions that the utilities pose. Several ideas are presented for collecting the required data, including photometric analysis of aerial photographs of installed collectors, statistical and neural network analysis of energy bills from solar homes, and the development of simple algorithms to allow conventional SHW controllers to announce system failures and record the details of the event, similar to how aircraft black box recorders perform. Some information is also presented about public expectations for the longevity of a SHW system, information that is useful in developing reliability goals.

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

    SciTech Connect (OSTI)

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

    1980-02-01T23:59:59.000Z

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

  14. Measured electric hot water standby and demand loads from Pacific Northwest homes. End-Use Load and Consumer Assessment Program

    SciTech Connect (OSTI)

    Pratt, R.G.; Ross, B.A.

    1991-11-01T23:59:59.000Z

    The Bonneville Power Administration began the End-Use Load and Consumer Assessment Program (ELCAP) in 1983 to obtain metered hourly end-use consumption data for a large sample of new and existing residential and commercial buildings in the Pacific Northwest. Loads and load shapes from the first 3 years of data fro each of several ELCAP residential studies representing various segments of the housing population have been summarized by Pratt et al. The analysis reported here uses the ELCAP data to investigate in much greater detail the relationship of key occupant and tank characteristics to the consumption of electricity for water heating. The hourly data collected provides opportunities to understand electricity consumption for heating water and to examine assumptions about water heating that are critical to load forecasting and conservation resource assessments. Specific objectives of this analysis are to: (A) determine the current baseline for standby heat losses by determining the standby heat loss of each hot water tank in the sample, (B) examine key assumptions affecting standby heat losses such as hot water temperatures and tank sizes and locations, (C) estimate, where possible, impacts on standby heat losses by conservation measures such as insulating tank wraps, pipe wraps, anticonvection valves or traps, and insulating bottom boards, (D) estimate the EF-factors used by the federal efficiency standards and the nominal R-values of the tanks in the sample, (E) develop estimates of demand for hot water for each home in the sample by subtracting the standby load from the total hot water load, (F) examine the relationship between the ages and number of occupants and the hot water demand, (G) place the standby and demand components of water heating electricity consumption in perspective with the total hot water load and load shape.

  15. Our Environment in Hot Water: Comparing Water Heaters, A Life Cycle Approach Comparing Tank and Tankless Water Heaters in California

    E-Print Network [OSTI]

    Lu, Alison

    2011-01-01T23:59:59.000Z

    Diagram 1: A Typical Tank Water Heater Source: http://California households. Tank water heaters stayed constant.the same impact as tank water heaters. The project results

  16. Our Environment in Hot Water: Comparing Water Heaters, A Life Cycle Approach Comparing Tank and Tankless Water Heaters in California

    E-Print Network [OSTI]

    Lu, Alison

    2011-01-01T23:59:59.000Z

    Study on Eco-Design of Water Heaters, Van Holstein en Kemnaand AssessmentĒ in Water Heating Rulemaking TechnicalG. Smith, Tankless Gas Water Heaters: Oregon Market Status,

  17. Our Environment in Hot Water: Comparing Water Heaters, A Life Cycle Approach Comparing Tank and Tankless Water Heaters in California

    E-Print Network [OSTI]

    Lu, Alison

    2011-01-01T23:59:59.000Z

    Study on Eco-Design of Water Heaters, Van Holstein en Kemnaheater. Eco-design of Water Heaters and Methodology studyboth storage-type water heaters and tankless water heaters.

  18. Our Environment in Hot Water: Comparing Water Heaters, A Life Cycle Approach Comparing Tank and Tankless Water Heaters in California

    E-Print Network [OSTI]

    Lu, Alison

    2011-01-01T23:59:59.000Z

    for PAH emissions. The PAHs from tank water heaters in theIncreased Tankless Water Usage: PAHs Heavy Metals to WaterIncreased Tankless Water Usage: VOCs PAHs Heavy Metals to

  19. LWRS Fuels Pathway: Engineering Design and Fuels Pathway Initial Testing of the Hot Water Corrosion System

    SciTech Connect (OSTI)

    Dr. John Garnier; Dr. Kevin McHugh

    2012-09-01T23:59:59.000Z

    The Advanced LWR Nuclear Fuel Development R&D pathway performs strategic research focused on cladding designs leading to improved reactor core economics and safety margins. The research performed is to demonstrate the nuclear fuel technology advancements while satisfying safety and regulatory limits. These goals are met through rigorous testing and analysis. The nuclear fuel technology developed will assist in moving existing nuclear fuel technology to an improved level that would not be practical by industry acting independently. Strategic mission goals are to improve the scientific knowledge basis for understanding and predicting fundamental nuclear fuel and cladding performance in nuclear power plants, and to apply this information in the development of high-performance, high burn-up fuels. These will result in improved safety, cladding, integrity, and nuclear fuel cycle economics. To achieve these goals various methods for non-irradiated characterization testing of advanced cladding systems are needed. One such new test system is the Hot Water Corrosion System (HWCS) designed to develop new data for cladding performance assessment and material behavior under simulated off-normal reactor conditions. The HWCS is capable of exposing prototype rodlets to heated, high velocity water at elevated pressure for long periods of time (days, weeks, months). Water chemistry (dissolved oxygen, conductivity and pH) is continuously monitored. In addition, internal rodlet heaters inserted into cladding tubes are used to evaluate repeated thermal stressing and heat transfer characteristics of the prototype rodlets. In summary, the HWCS provides rapid ex-reactor evaluation of cladding designs in normal (flowing hot water) and off-normal (induced cladding stress), enabling engineering and manufacturing improvements to cladding designs before initiation of the more expensive and time consuming in-reactor irradiation testing.

  20. American Recovery and Reinvestment Act (ARRA) Federal Energy Management Program Technical Assistance Project 281 Solar Hot Water Application Assessment for U.S. Army IMCOM-Southeast Region

    SciTech Connect (OSTI)

    Russo, Bryan J.; Chvala, William D.

    2010-09-30T23:59:59.000Z

    The Energy Independence and Security Act of 2007 requires installations (EISA) to install solar systems of sufficient capacity to provide 30% of service hot water in new construction and renovations where cost-effective. However, installations are struggling with how to implement solar hot water, and while several installations are installing solar hot water on a limited basis, paybacks remain long. Pacific Northwest National Laboratory (PNNL) was tasked to address this issue to help determine how best to implement solar hot water projects. This documents discusses the results of that project.

  1. U.S. Marine Corps Base Camp Pendleton: Using The Sun For Hot Water And Electricity, Federal Energy Management Program (FEMP) (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2009-09-01T23:59:59.000Z

    Case study overview of integrated solar hot water/photovoltaic systems at the U.S. Marine Corps Camp Pendleton training pools.

  2. Our Environment in Hot Water: Comparing Water Heaters, A Life Cycle Approach Comparing Tank and Tankless Water Heaters in California

    E-Print Network [OSTI]

    Lu, Alison

    2011-01-01T23:59:59.000Z

    Study on Eco-Design of Water Heaters, Van Holstein en Kemnaon Eco-Design of Water HeatersĒ, Task 5 Report, DefinitionTesting of Tankless Gas Water Heater Performance. Davis

  3. Engineering and economic evaluation of direct hot-water geothermal energy applications on the University of New Mexico campus. Final technical report

    SciTech Connect (OSTI)

    Kauffman, D.; Houghton, A.V.

    1980-12-31T23:59:59.000Z

    The potential engineering and economic feasibility of low-temperature geothermal energy applications on the campus of the University of New Mexico is studied in detail. This report includes three phases of work: data acquisition and evaluation, system synthesis, and system refinement and implementation. Detailed process designs are presented for a system using 190/sup 0/F geothermal water to substitute for the use of 135 x 10/sup 9/ Btu/y (141 TJ/y) of fossil fuels to provide space and domestic hot water heating for approximately 23% of the campus. Specific areas covered in the report include economic evaluation, environmental impact and program implementation plans.

  4. Hot Water Distribution System Program Documentation and Comparison to Experimental Data

    SciTech Connect (OSTI)

    Baskin, Evelyn [GE Infrastructure Energy; Craddick, William G [ORNL; Lenarduzzi, Roberto [ORNL; Wendt, Robert L [ORNL; Woodbury, Professor Keith A. [University of Alabama, Tuscaloosa

    2007-09-01T23:59:59.000Z

    In 2003, the California Energy Commission s (CEC s) Public Interest Energy Research (PIER) program funded Oak Ridge National Laboratory (ORNL) to create a computer program to analyze hot water distribution systems for single family residences, and to perform such analyses for a selection of houses. This effort and its results were documented in a report provided to CEC in March, 2004 [1]. The principal objective of effort was to compare the water and energy wasted between various possible hot water distribution systems for various different house designs. It was presumed that water being provided to a user would be considered suitably warm when it reached 105 F. Therefore, what was needed was a tool which could compute the time it takes for water reaching the draw point to reach 105 F, and the energy wasted during this wait. The computer program used to perform the analyses was a combination of a calculational core, produced by Dr. Keith A. Woodbury, Professor of Mechanical Engineering and Director, Alabama Industrial Assessment Center, University of Alabama, and a user interface based on LabVIEW, created by Dr. Roberto Lenarduzzi of ORNL. At that time, the computer program was in a relatively rough and undocumented form adequate to perform the contracted work but not in a condition where it could be readily used by those not involved in its generation. Subsequently, the CEC provided funding through Lawrence Berkeley National Laboratory (LBNL) to improve the program s documentation and user interface to facilitate use by others, and to compare the program s results to experimental data generated by Dr. Carl Hiller. This report describes the program and provides user guidance. It also summarizes the comparisons made to experimental data, along with options built into the program specifically to allow these comparisons. These options were necessitated by the fact that some of the experimental data required options and features not originally included in the program. A more detailed description of these program modifications along with detailed comparisons to the experimental data are provided in a report produced by Dr. Woodbury, which accompanies this report as Appendix H.

  5. Assembly and comparison of available solar hot water system reliability databases and information.

    SciTech Connect (OSTI)

    Menicucci, David F. (Building Specialists, Inc., Albuquerque, NM)

    2009-05-01T23:59:59.000Z

    Solar hot water (SHW) systems have been installed commercially for over 30 years, yet few quantitative details are known about their reliability. This report describes a comprehensive analysis of all of the known major previous research and data regarding the reliability of SHW systems and components. Some important conclusions emerged. First, based on a detailed inspection of ten-year-old systems in Florida, about half of active systems can be expected to fail within a ten-year period. Second, valves were identified as the probable cause of a majority of active SHW failures. Third, passive integral and thermosiphon SHW systems have much lower failure rates than active ones, probably due to their simple design that employs few mechanical parts. Fourth, it is probable that the existing data about reliability do not reveal the full extent of fielded system failures because most of the data were based on trouble calls. Often an SHW system owner is not aware of a failure because the backup system silently continues to produce hot water. Thus, a repair event may not be generated in a timely manner, if at all. This final report for the project provides all of the pertinent details about this study, including the source of the data, the techniques to assure their quality before analysis, the organization of the data into perhaps the most comprehensive reliability database in existence, a detailed statistical analysis, and a list of recommendations for additional critical work. Important recommendations include the inclusion of an alarm on SHW systems to identify a failed system, the need for a scientifically designed study to collect high-quality reliability data that will lead to design improvements and lower costs, and accelerated testing of components that are identified as highly problematic.

  6. One Machine for Heating Cooling & Domestic Hot Water: Multi-Function Heat Pumps to Enable Zero Net Energy Homes

    E-Print Network [OSTI]

    California at Davis, University of

    One Machine for Heating Cooling & Domestic Hot Water: Multi-Function Heat Pumps to Enable Zero Net at the core of a zero-net-energy demonstration home designed to generate enough electricity to also power policy initiatives to advance zero net energy homes as standard practice. #12;As heat pump systems become

  7. Performance of a solid oxide fuel cell CHP system coupled with a hot water storage tank for

    E-Print Network [OSTI]

    Berning, Torsten

    Performance of a solid oxide fuel cell CHP system coupled with a hot water storage tank for single a solid oxide fuel cell (SOFC) system for cogeneration of heat and power integrated with a stratified heat oxide fuel cell, Cogeneration, Storage heat Tank 1. Introduction In residential sector, energy

  8. Performance of a Heat Pump Water Heater in the Hot-Humid Climate, Windermere, Florida (Fact Sheet)

    SciTech Connect (OSTI)

    Metzger, C.; Puttagunta, S.; Williamson, J.

    2013-11-01T23:59:59.000Z

    Over recent years, heat pump water heaters (HPWHs) have become more readily available and more widely adopted in the marketplace. For a 6-month period, the Building America team Consortium for Advanced Residential Buildings monitored the performance of a GE Geospring HPWH in Windermere, Florida. The study found that the HPWH performed 144% more efficiently than a traditional electric resistance water heater, saving approximately 64% on water heating annually. The monitoring showed that the domestic hot water draw was a primary factor affecting the system's operating efficiency.

  9. Improving thermosyphon solar domestic hot water system model performance. Final report, March 1994--February 1995

    SciTech Connect (OSTI)

    Swift, T.N.

    1996-09-01T23:59:59.000Z

    Data from an indoor solar simulator experimental performance test is used to develop a systematic calibration procedure for a computer model of a thermosyphoning, solar domestic hot water heating system with a tank-in-tank heat exchanger. Calibration is performed using an indoor test with a simulated solar collector to adjust heat transfer in the heat exchanger and heat transfer between adjacent layers of water in the storage tank. An outdoor test is used to calibrate the calculation of the friction drop in the closed collector loop. Additional indoor data with forced flow in the annulus of the heat exchanger leads to improved heat transfer correlations for the inside and outside regions of the tank-in-tank heat exchanger. The calibrated simulation model is compared to several additional outdoor tests both with and without auxiliary heating. Integrated draw energies are predicted with greater accuracy and draw temperature profiles match experimental results to a better degree. Auxiliary energy input predictions improve significantly. 63 figs., 29 tabs.

  10. A cash-flow economic model for analyzing utility/ESCO solar hot water programs

    SciTech Connect (OSTI)

    Bircher, C. [ENSTAR, De Pere, WI (United States); DeLaune, J.L. [Wisconsin Public Service Corp., Green Bay, WI (United States); Lyons, C.R. [Energy Alliance Group, Boston, MA (United States)

    1996-11-01T23:59:59.000Z

    Wisconsin Public Service Corporation (WPSC), in partnership with Energy Alliance Group (EAG), has developed a robust cash-flow economic model to analyze an energy service company (ESCO) approach to utility solar water heating programs. This paper describes the ESCO approach and its potential to increase penetration of solar water heating. The economic model is presented, and its use in designing WPSC`s Solar-Wise Water Heating Service program is described. The model`s results for WPSC are positive, indicating that an ESCO approach has strong potential. A feasibility study of ESCO solar water heating programs for a varied sample of other US utilities was also conducted using the model, and the results are summarized. Sensitivity analyses from the study reveal that the three key drivers of ESCO solar water heating success are electric rate, length of the service agreement, and the amount of the customer`s payment for the service.

  11. Our Environment in Hot Water: Comparing Water Heaters, A Life Cycle Approach Comparing Tank and Tankless Water Heaters in California

    E-Print Network [OSTI]

    Lu, Alison

    2011-01-01T23:59:59.000Z

    consumer/your_home/water_ heating/index.cfm/mytopic=12980heating is a large source of energy use in California homes.heating is the third largest source of energy use in homes [

  12. Heat Pump Water Heater Modeling in EnergyPlus (Presentation)

    SciTech Connect (OSTI)

    Wilson, E.; Christensen, C.

    2012-03-01T23:59:59.000Z

    This presentation summarizes NREL's development of a HPWH model for use in hourly building energy simulation programs, such as BEopt; this presentation was given at the Building America Stakeholder meeting on March 1, 2012, in Austin, Texas.

  13. High temperature hot water distribution system study, Directorate of Public Works, Fort Drum, New York; executive summary. Final report

    SciTech Connect (OSTI)

    NONE

    1996-12-01T23:59:59.000Z

    The existing High Temperature Hot Water (HTHW) Distribution System has been plagued with design and construction deficiencies since startup of the HTHW system, in October 1988. In October 1989, after one year of service, these deficiencies were outlined in a technical evaluation. The deficiencies included flooded manholes, sump pumps not hooked up, leaking valves, contaminated HTHW water, and no cathodic protection system. This feasibility study of the High Temperature Hot Water (HTHW) Distribution System was performed under Contract No. DACA01-94-D-0033, Delivery Order 0013, Modification 1, issued to EMC Engineers, Inc. (EMC), by the Norfolk District Corps of Engineers, on 25 April 1996. The purpose of this study was to determine the existing conditions of the High Temperature Hot Water Distribution System, manholes, and areas of containment system degradation. The study focused on two areas of concern, as follows: (1) Determine existing conditions and areas of containment system degradation (leaks) in the underground carrier pipes and protective conduit. (2) Document the condition of underground steel and concrete manholes. To document the leaks, a site survey was performed, using state-of-the-art infrared leak detection equipment and tracer gas leak detection equipment. To document the condition of the manholes, color photographs were taken of the insides of 125 manholes, and notes were made on the condition of these manholes.

  14. Development and testing of a photometric method to identify non-operating solar hot water systems in field settings.

    SciTech Connect (OSTI)

    He, Hongbo (University of New Mexico, Albuquerque, NM); Vorobieff, Peter V. (University of New Mexico, Albuquerque, NM); Menicucci, David (University of New Mexico, Albuquerque, NM); Mammoli, Andrea A. (University of New Mexico, Albuquerque, NM); Carlson, Jeffrey J.

    2012-06-01T23:59:59.000Z

    This report presents the results of experimental tests of a concept for using infrared (IR) photos to identify non-operational systems based on their glazing temperatures; operating systems have lower glazing temperatures than those in stagnation. In recent years thousands of new solar hot water (SHW) systems have been installed in some utility districts. As these numbers increase, concern is growing about the systems dependability because installation rebates are often based on the assumption that all of the SHW systems will perform flawlessly for a 20-year period. If SHW systems routinely fail prematurely, then the utilities will have overpaid for grid-energy reduction performance that is unrealized. Moreover, utilities are responsible for replacing energy for loads that failed SHW system were supplying. Thus, utilities are seeking data to quantify the reliability of SHW systems. The work described herein is intended to help meet this need. The details of the experiment are presented, including a description of the SHW collectors that were examined, the testbed that was used to control the system and record data, the IR camera that was employed, and the conditions in which testing was completed. The details of the associated analysis are presented, including direct examination of the video records of operational and stagnant collectors, as well as the development of a model to predict glazing temperatures and an analysis of temporal intermittency of the images, both of which are critical to properly adjusting the IR camera for optimal performance. Many IR images and a video are presented to show the contrast between operating and stagnant collectors. The major conclusion is that the technique has potential to be applied by using an aircraft fitted with an IR camera that can fly over an area with installed SHW systems, thus recording the images. Subsequent analysis of the images can determine the operational condition of the fielded collectors. Specific recommendations are presented relative to the application of the technique, including ways to mitigate and manage potential sources of error.

  15. PRESENTATION: WATER-ENERGY NEXUS | Department of Energy

    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 DataDepartment of Energy Your Density Isn'tOrigin of Contamination in235-1 Termoelectrica U.S LLCPP-63-1HydroelectricWATER-ENERGY NEXUS

  16. Water Heating Standing Technical Committee Presentation | Department of

    Energy Savers [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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2, 2015Visiting Strong, Smart, andThomasWaste Heat WasteEnergy Water

  17. Solar heating and hot water system installed at the Senior Citizen Center, Huntsville, Alabama. [Includes engineering drawings

    SciTech Connect (OSTI)

    Not Available

    1980-02-01T23:59:59.000Z

    Information is provided on the solar energy system installed at the Huntsville Senior Citizen Center. The solar space heating and hot water facility and the project involved in its construction are described in considerable detail and detailed drawings of the complete system and discussions of the planning, the hardware, recommendations, and other pertinent information are included. The facility was designed to provide 85 percent of the hot water and 85 percent of the space heating requirements. Two important factors concerning this project for commercial demonstration are the successful use of silicon oil as a heat transfer fluid and the architecturally aesthetic impact of a large solar energy system as a visual centerpoint. There is no overheat or freeze protection due to the characteristics of the silicon oil and the design of the system. Construction proceeded on schedule with no cost overruns. It is designed to be relatively free of scheduled maintenance, and has experienced practically no problems.

  18. Instrument Qualification of Custom Fabricated Water Activity Meter for Hot Cell Use

    SciTech Connect (OSTI)

    McCoskey, Jacob K.

    2014-01-22T23:59:59.000Z

    This report describes a custom fabricated water activity meter and the results of the qualification of this meter as described in the laboratory test plan LAB-PLN-11-00012, Testing and Validation of an Enhanced Acquisition and Control System. It was calibrated against several NaOH solutions of varying concentrations to quantify the accuracy and precision of the instrument at 20 įC and 60 įC. Also, a schematic and parts list of the equipment used to make the water activity meter will be presented in this report.

  19. Water and Energy Wasted During Residential Shower Events: Findings from a Pilot Field Study of Hot Water Distribution Systems

    E-Print Network [OSTI]

    Lutz, Jim

    2012-01-01T23:59:59.000Z

    of Natural Gas Tankless Water Heaters. Center for Energy andhot water from the water heater to each end-use locationMixed Temperature Water Water Heater Drain Indoor Boundary

  20. Water and Energy Wasted During Residential Shower Events: Findings from a Pilot Field Study of Hot Water Distribution Systems

    E-Print Network [OSTI]

    Lutz, Jim

    2012-01-01T23:59:59.000Z

    of Natural Gas Tankless Water Heaters. Center for Energy andof water at the water heater and at several end-use pointsshowerhead, entering the water heater and leaving the water

  1. Presentations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Presentations Presentations Sort by: Default | Name | Date (low-high) | Date (high-low) | Source | Category Barbara Helland: NERSC-HEP Requirements Review November 27, 2012 |...

  2. Task 15 -- Remediation of organically contaminated soil using hot/liquid (subcritical) water. Semi-annual report, April 1--September 30, 1997

    SciTech Connect (OSTI)

    Hawthorne, S.B.

    1997-12-31T23:59:59.000Z

    This activity involves a pilot-scale demonstration of the use of hot/liquid water for the removal of organic contaminants from soil at the pilot (20 to 40 kg) scale. Lab-scale studies are being performed to determine the optimum temperature, contact time, and flow rates for removal of the organic contaminants. Initial investigations into using carbon sorbents to clean the extractant water for recycle use and to concentrate the extracted contaminants in a small volume for disposal are also being performed. Liquid water is normally considered to be too polar a solvent to be effective for removal of organic contaminants from contaminated soils and sludges. However, the Energy and Environmental Research Center (EERC) has demonstrated that the polarity of liquid water can be changed from that of a very polar solvent at ambient conditions to that of an organic solvent (e.g., ethanol or acetonitrile) by simply raising the temperature. The EERC has exploited this unique property of liquid water to obtain highly selective extractions of polar (at lower temperatures) to nonpolar (at 200 to 250 C) organics from contaminated soils and sludges. Only moderate pressures (a maximum of about 45 atm at 250 C and lower pressures at lower temperatures) are required. With this procedure, all detectable hazardous organics were removed from the sludge, thus making the remaining material (about 99% of the original mass) a nonhazardous material. The present understanding of hot/liquid water extraction for the removal of hazardous organics from contaminated soils and sludges is being used to develop the engineering parameters needed to perform a pilot-scale demonstration of the remediation technology. Progress during the report period is summarized.

  3. FEMP Designated Product Assessment for Commercial Gas Water Heaters

    E-Print Network [OSTI]

    Lutz, Jim

    2012-01-01T23:59:59.000Z

    heaters, hot water supply boilers, and unfired hot water storage tanks.heaters, hot water supply boilers, and unfired hot water storage tanks.

  4. Dealing with big circulation flow, small temperature difference based on verified dynamic model simulations of a hot water district heating system

    E-Print Network [OSTI]

    Zhong, L.

    2014-01-01T23:59:59.000Z

    DEALING WITH ďBIG CIRCULATION FLOW RATE, SMALL TEMPERATURE DIFFERENCEĒ BASED ON VERIFIED DYNAMIC MODEL SIMULATIONS OF A HOT WATER DISTRICT HEATING SYSTEM Li Lian Zhong, Senior Sales Consultant, Danfoss Automatic Controls Management (Shanghai...) Co.,Ltd, Anshan, China ABSTRACT Dynamic models of an indirect hot water district heating system were developed based on the first principle of thermodynamics. The ideal model was verified by using measured operational data. The ideal...

  5. Hot Water Draw Patterns in Single-Family Houses: Findings from Field Studies

    E-Print Network [OSTI]

    Lutz, Jim

    2012-01-01T23:59:59.000Z

    Two Demand Electric Water Heaters for Northeast Utilities.Two Demand Electric Water Heaters for Northeast Utilities.Johnson. Heat Pump Water Heater Field Test: 30 Crispaire

  6. Presentations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    | ppt | 35 MB Present and Future Computing Requirements for Computational Prediction of Protein-DNA Binding September 12, 2012 | Author(s): Mohammed AlQuraishi |...

  7. Does Transferring Water Present an Efficient Way of Solving Water Scarcity in China's Northeast?

    E-Print Network [OSTI]

    Markosov, Artem Igorevich

    2014-05-31T23:59:59.000Z

    to the understanding of water scarcity in China and provides an academic analysis that argues in favor of the SNWDP as a partial solution in dealing with China's water scarcity. I propose an argument supporting water transfer as a potential partial solution...

  8. Presenters

    Broader source: Energy.gov (indexed) [DOE]

    Tuesday October 16 Presenters 7:30 Registration 8:30 Welcome Remarks Pilar Thomas, Department of Energy (DOE), Office of Indian Energy Policy and Programs Introductions All 9:00...

  9. Presentations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Craig Tull: Present and Future Computing Requirements for Daya Bay November 27, 2012 | Author(s): Craig Tull (LBNL) | Download File: CraigTull20121127Dayabay.pdf | pdf | 11 MB...

  10. Presentations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Future Computing Requirements for Daya Bay November 27, 2012 | Author(s): Craig Tull (LBNL) | Download File: CraigTull20121127Dayabay.pdf | pdf | 11 MB Present and Future...

  11. An ASAE/CSAE Meeting Presentation Paper Number: 043065 Estimating Water Stress in Plants Using

    E-Print Network [OSTI]

    Jones, Carol

    plant species (corn, spinach and snap beans) grown in a greenhouse and subjected to different watering the best method of nondestructively estimating plant water content. In corn and snap beans, the 1450 nmAn ASAE/CSAE Meeting Presentation Paper Number: 043065 Estimating Water Stress in Plants Using

  12. Hot Water Draw Patterns in Single-Family Houses: Findings from Field Studies

    E-Print Network [OSTI]

    Lutz, Jim

    2012-01-01T23:59:59.000Z

    and R.K. Johnson. Heat Pump Water Heater Field Test: 30a Market-Optimized Heat- Pump Water Heater. Prepared by TIAXcost savings of heat pump water heaters Field test of

  13. Presentations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah ProjectPRE-AWARDenergy use is projected to growPresentations Basic

  14. Presentations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah ProjectPRE-AWARDenergy use is projected to growPresentations

  15. Presentations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah ProjectPRE-AWARDenergy use is projected to growPresentations Harvey

  16. Presentations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah ProjectPRE-AWARDenergy use is projected to growPresentations

  17. Presentations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah ProjectPRE-AWARDenergy use is projected to growPresentations 20th

  18. Presentations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah ProjectPRE-AWARDenergy use is projected to growPresentations

  19. Presentations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah ProjectPRE-AWARDenergy use is projected to growPresentationsCameron

  20. Presentations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)IntegratedSpeedingTechnical InformationProcess and CombustionIndustryPresentations

  1. Presentations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)IntegratedSpeedingTechnical InformationProcess and CombustionIndustryPresentations

  2. CenterPoint Energy (Gas)- Residential Heating and Hot Water Rebates

    Broader source: Energy.gov [DOE]

    CenterPoint Energy offers gas heating and water heating equipment rebates to its residential customers. Eligible equipment includes furnaces, back-up furnace systems, hydronic heaters, storage...

  3. Limited Energy Engineering Analysis (EEAP) study of summer boiler at high temperature hot water plants, Fort Leonard Wood, Missouri. Final report

    SciTech Connect (OSTI)

    NONE

    1993-09-02T23:59:59.000Z

    This report is a study of the existing High Temperature Hot Water Distribution Systems at Fort Leonard Wood, Missouri. There are two systems with central boilers located in Buildings 1021 and 2369. The study focuses on the operation of the boilers during the summer months which is required to provide domestic hot water and sanitizing steam to various buildings. Because the boilers are operating under a reduced load condition, it may be cost effective in terms of energy conservation to implement one of the following energy conservation opportunities (ECO`s).

  4. Apparatus and method for pumping hot, erosive slurry of coal solids in coal derived, water immiscible liquid

    DOE Patents [OSTI]

    Ackerman, Carl D. (Olympia, WA)

    1983-03-29T23:59:59.000Z

    An apparatus for and method of pumping hot, erosive slurry of coal solids in a coal derived, water immiscible liquid to higher pressure involves the use of a motive fluid which is miscible with the liquid of the slurry. The apparatus includes a pump 12, a remote check valve 14 and a chamber 16 between and in fluid communication with the pump 12 and check valve 14 through conduits 18,20. Pump 12 exerts pressure on the motive fluid and thereby on the slurry through a concentration gradient of coal solids within chamber 16 to alternately discharge slurry under pressure from the outlet port of check valve 14 and draw slurry in through the inlet port of check valve 14.

  5. Supercritical fluid extraction of bitumen free solids separated from Athabasca oil sand feed and hot water process tailings pond sludge

    SciTech Connect (OSTI)

    Kotlyar, L.S.; Sparks, B.D.; Woods, J.R.; Ripmeester, J.A. (National Research Council of Canada, Ottawa, ON (Canada). Div. of Chemistry)

    1990-01-01T23:59:59.000Z

    The presence of strongly bound organic matter (SOM), in association with certain solids fractions, causes serious problems in the processability of Athabasca oil sands as well as in the settling and compaction of hot water process tailing pond sludge. It has been demonstrated that a substantial amount of this SOM can be separated from oil sands feed and sludge solids, after removal of bitumen by toluene, using a supercritical fluid extraction (SFE) method. The extracted material is soluble in common organic solvents which allows a direct comparison, between the SOM separated from oil sands and sludges, from the point of view of both gross analysis of the major compound types and detailed analysis of chemical structures.

  6. Pilot plant studies for a new hot water process for extraction of bitumen from Utah tar sands

    SciTech Connect (OSTI)

    Dahlstrom, D.A.

    1996-12-31T23:59:59.000Z

    A process development pilot plant for extracting bitumen from tar sands under arid conditions are described. The hot water recovery process under development is required to maximize heat and water recovery, recover more than 90% of the bitumen, minimize the operating cost, and eliminate the use of a tailings pond by increasing the effectiveness of solids separation and dewatering. Technical aspects of process flow conditions, the liquid cyclone separator under development, and testing to analyze the influence of flow rates, size distribution in discharge streams, amount of bitumen recovery from different streams, and air addition are summarized. Test results indicate that bitumen recovery should be at least 90%, water content from thickener underflow and dewater coarse solids averages about 30 weight percent moisture, and the forced vortex cyclone can produce an underflow solids concentration of 69 to 72 weight percent moisture. The proposed flow sheet is believed to be a very low-cost method for bitumen recovery. 5 refs., 3 figs., 2 tabs.

  7. An Analysis Method for Operations of Hot Water Heaters by Artificial Neural Networks†

    E-Print Network [OSTI]

    Yamaha, M.; Takahashi, M.

    2004-01-01T23:59:59.000Z

    Authors tried to apply an Artificial Neural Network (ANN) to estimation of state of building systems. The systems used in this study were gas combustion water heaters. Empirical equations to estimate gas consumption from measureble properies...

  8. An Analysis Method for Operations of Hot Water Heaters by Artificial Neural Networks

    E-Print Network [OSTI]

    Yamaha, M.; Takahashi, M.

    2004-01-01T23:59:59.000Z

    Authors tried to apply an Artificial Neural Network (ANN) to estimation of state of building systems. The systems used in this study were gas combustion water heaters. Empirical equations to estimate gas consumption from measureble properies...

  9. Solar heating, cooling, and domestic hot water system installed at Kaw Valley State Bank and Trust Company, Topeka, Kansas. Final report

    SciTech Connect (OSTI)

    None

    1980-11-01T23:59:59.000Z

    The building has approximately 5600 square feet of conditioned space. Solar energy is used for space heating, space cooling, and preheating domestic hot water (DHW). The solar energy system has an array of evacuated tube-type collectors with an area of 1068 square feet. A 50/50 solution of ethylene glycol and water is the transfer medium that delivers solar energy to a tube-in-shell heat exchanger that in turn delivers solar-heated water to a 1100 gallon pressurized hot water storage tank. When solar energy is insufficient to satisfy the space heating and/or cooling demand, a natural gas-fired boiler provides auxiliary energy to the fan coil loops and/or the absorption chillers. Extracts from the site files, specification references, drawings, and installation, operation and maintenance instructions are included.

  10. Water and Energy Wasted During Residential Shower Events: Findings from a Pilot Field Study of Hot Water Distribution Systems

    E-Print Network [OSTI]

    Lutz, Jim

    2012-01-01T23:59:59.000Z

    v i i where, h = molar enthalpy, Btu/mol (J/mol), M = molarEnergy Used at Shower Water Heater average 5169 BTU ( 5.454MJ ) 4335 BTU ( 4.573 MJ ) 4151 BTU ( 4.379 MJ ) 4192 BTU (

  11. A Probabilistic Water Resources Assessment of the Paradise Creek Watershed Presented in Partial Fulfillment of the Requirements for the

    E-Print Network [OSTI]

    Fiedler, Fritz R.

    A Probabilistic Water Resources Assessment of the Paradise Creek Watershed A Thesis Presented Probabilistic Water Resources Assessment of the Paradise Creek Watershed," has been reviewed in final form ____________________________________Date____________ Margrit von Braun #12;iii iii A Probabilistic Water Resources Assessment

  12. Environmental Radioactivity 47 (2000) 127}133 Radon concentrations in hot spring waters in

    E-Print Network [OSTI]

    HorvŠth, Ńkos

    2000-01-01T23:59:59.000Z

    in northern Venezuela AD . HorvaH th *, L.O. Bohus , F. Urbani , G. Marx , A. PiroH th , E.D. Greaves Eo( tvo and underground waters stemming from uranium-rich soil are the "rst candidates for high radon and radium

  13. Building America Webinar: Central Multifamily Water Heating Systems- Energy-Efficient Controls for Multifamily Domestic Hot Water

    Broader source: Energy.gov [DOE]

    This presentation was delivered at the U.S. Department of Energy Building America webinar on January 21, 2015.

  14. Water Sampling At Alvord Hot Springs Area (Wood, 2002) | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTri GlobalJump to: navigation, search ContentsWater PowerInformation

  15. Water Sampling At Belknap-Foley-Bigelow Hot Springs Area (Wood, 2002) |

    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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTri GlobalJump to: navigation, search ContentsWater

  16. Water Sampling At Beowawe Hot Springs Area (Wood, 2002) | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTri GlobalJump to: navigation, search ContentsWaterInformation Beowawe

  17. Water Sampling At Breitenbush Hot Springs Area (Wood, 2002) | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTri GlobalJump to: navigation, search ContentsWaterInformation

  18. Water Sampling At Buffalo Valley Hot Springs Area (Laney, 2005) | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTri GlobalJump to: navigation, search ContentsWaterInformationEnergy

  19. Guidelines for selecting a solar heating, cooling or hot water design

    SciTech Connect (OSTI)

    Kelly, C.J. Jr.

    1981-12-01T23:59:59.000Z

    Guidelines are presented for the professional who may have to choose between competing solar heating and cooling designs for buildings. The experience of the National Solar Data Network in monitoring over 100 solar installations are drawn upon. Three basic principles and a design selection checklist are developed which will aid in choosing the most cost effective design.

  20. Case Study of Stratified Chilled Water Storage Utilization for Comfort and Process Cooling in a Hot, Humid Climate

    E-Print Network [OSTI]

    Bahnfleth, W. P.; Musser, A.

    1998-01-01T23:59:59.000Z

    by approximately $1.5 million per year. The thermal storage tank is a fully buried cylindrical, precast, pre-stressed tank with four-ring single pipe octagonal diffusers. It holds 5.2 million gallons (1 9.7 million L) of water, and is 140 ft (42.7 m... of the system and its operation is followed by presentation of operating data taken during 1997. INTRODUCTION Chilled water thermal energy storage ('TES) in naturally stratified tanks has been shown to be a valuable central cooling plant load management...

  1. Preliminary geothermal investigations at Manley Hot Springs, Alaska

    SciTech Connect (OSTI)

    East, J.

    1982-04-01T23:59:59.000Z

    Manley Hot Springs is one of several hot springs which form a belt extending from the Seward Peninsula to east-central Alaska. All of the hot springs are low-temperature, water-dominated geothermal systems, having formed as the result of circulation of meteoric water along deepseated fractures near or within granitic intrusives. Shallow, thermally disturbed ground at Manley Hot Springs constitutes an area of 1.2 km by 0.6 km along the lower slopes of Bean Ridge on the north side of the Tanana Valley. This area includes 32 springs and seeps and one warm (29.1/sup 0/C) well. The hottest springs range in temperature from 61/sup 0/ to 47/sup 0/C and are presently utilized for space heating and irrigation. This study was designed to characterize the geothermal system present at Manley Hot Springs and delineate likely sites for geothermal drilling. Several surveys were conducted over a grid system which included shallow ground temperature, helium soil gas, mercury soil and resistivity surveys. In addition, a reconnaissance ground temperature survey and water chemistry sampling program was undertaken. The preliminary results, including some preliminary water chemistry, show that shallow hydrothermal activity can be delineated by many of the surveys. Three localities are targeted as likely geothermal well sites, and a model is proposed for the geothermal system at Manley Hot Springs.

  2. INTEGRATED CO2 HEAT PUMP SYSTEMS FOR SPACE HEATING AND HOT WATER HEATING IN LOW-ENERGY HOUSES AND

    E-Print Network [OSTI]

    J. Stene

    designed as stand-alone systems, i.e. a heat pump water heater (HPWH) in combination with separate units

  3. 1 CO2 Heat Pump System for Space Heating and Hot Water Heating in Low-Energy Houses and Passive

    E-Print Network [OSTI]

    J. Stene

    2008-01-01T23:59:59.000Z

    designed as a stand-alone system, i.e. a heat pump water heater in combination with a separate unit for

  4. Use of a submersible viscometer in the primary separation step of the hot water process for recovery of bitumen from tar sand

    SciTech Connect (OSTI)

    Schramm, L.L.

    1987-01-20T23:59:59.000Z

    The patent describes the primary separation step of the hot water process for extracting bitumen from tar sand in primary separation vessel. The bitumen floats upwardly in a tar sand slurry to form a froth layer, the coarse solids drop to form a tailings layer, and a middlings layer is formed between the froth and the tailings. The improvement described here comprises: providing a submerged viscometer in the middlings layer and actuating the viscometer to measure the viscosity of the middlings at one or more levels in the vertical column of middlings and produce signals, external of the vessel, which are indicative of the measurements; taking sufficient measurements to determine the viscosity of the region of maximum viscosity within the middlings layer and adjusting the viscosity of the middlings in response to the signals to maintain the maximum viscosity in the column below a predetermined value, whereby the flotation of the bitumen through the middlings layer to the froth layer is substantially enhanced.

  5. MONITORING PRESENT DAY CHANGES IN WATER VAPOUR AND THE RADIATIVE ENERGY BALANCE USING SATELLITE DATA,

    E-Print Network [OSTI]

    Allan, Richard P.

    precipitation events are expected to exert an adverse effect on agriculture, water resources, human health in the total area affected by drought and the flood risk associated with increased frequency of heavy of droughts. While there is evidence for this response (e.g. Neelin et al., 2006; Seager et al. 2007

  6. DEPOSITIONAL FACIES AND AQUEOUS-SOLID GEOCHEMISTRY OF TRAVERTINE-DEPOSITING HOT SPRINGS (ANGEL TERRACE, MAMMOTH HOT SPRINGS, YELLOWSTONE NATIONAL PARK, U.S.A.)

    E-Print Network [OSTI]

    Farmer, Jack D.

    include hot spring travertine (precipitates from high-temperature springs, also called carbonate sinters spring water in the higher-temperature (-50-73¬įC) depositional facies. Conversely, travertine from waters in low- to high- * Present Address: Department of Geology, Arizona State University, Box

  7. Hot air drum evaporator

    DOE Patents [OSTI]

    Black, Roger L. (Idaho Falls, ID)

    1981-01-01T23:59:59.000Z

    An evaporation system for aqueous radioactive waste uses standard 30 and 55 gallon drums. Waste solutions form cascading water sprays as they pass over a number of trays arranged in a vertical stack within a drum. Hot dry air is circulated radially of the drum through the water sprays thereby removing water vapor. The system is encased in concrete to prevent exposure to radioactivity. The use of standard 30 and 55 gallon drums permits an inexpensive compact modular design that is readily disposable, thus eliminating maintenance and radiation build-up problems encountered with conventional evaporation systems.

  8. A Detection of Water in the Transmission Spectrum of the Hot Jupiter WASP-12b and Implications for its Atmospheric Composition

    E-Print Network [OSTI]

    Kreidberg, Laura; Bean, Jacob L; Stevenson, Kevin B; Desert, Jean-Michel; Madhusudhan, Nikku; Fortney, Jonathan J; Barstow, Joanna K; Henry, Gregory W; Williamson, Michael; Showman, Adam P

    2015-01-01T23:59:59.000Z

    Detailed characterization of exoplanets has begun to yield measurements of their atmospheric properties that constrain the planets' origins and evolution. For example, past observations of the dayside emission spectrum of the hot Jupiter WASP-12b indicated that its atmosphere has a high carbon-to-oxygen ratio (C/O $>$ 1), suggesting it had a different formation pathway than is commonly assumed for giant planets. Here we report a precise near-infrared transmission spectrum for WASP-12b based on six transit observations with the Hubble Space Telescope/Wide Field Camera 3. We bin the data in 13 spectrophotometric light curves from 0.84 - 1.67 $\\mu$m and measure the transit depths to a median precision of 51 ppm. We retrieve the atmospheric properties using the transmission spectrum and find strong evidence for water absorption (7$\\sigma$ confidence). This detection marks the first high-confidence, spectroscopic identification of a molecule in the atmosphere of WASP-12b. The retrieved 1$\\sigma$ water volume mixin...

  9. Review of International Methods of Test to Rate the Efficiency of Water Heaters

    E-Print Network [OSTI]

    Lutz, Jim

    2012-01-01T23:59:59.000Z

    of water heaters and hot water storage tanks of June 2010,for water heaters and hot water storage tanks, and of theof water heaters and hot water storage tanks," 2010. http://

  10. Hot Canyon

    ScienceCinema (OSTI)

    None

    2013-03-01T23:59:59.000Z

    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."

  11. Performance Evaluation of a 4.5 kW (1.3 Refrigeration Tons) Air-Cooled Lithium Bromide/Water Solar Powered (Hot-Water-Fired) Absorption Unit

    SciTech Connect (OSTI)

    Zaltash, Abdolreza [ORNL; Petrov, Andrei Y [ORNL; Linkous, Randall Lee [ORNL; Vineyard, Edward Allan [ORNL

    2007-01-01T23:59:59.000Z

    During the summer months, air-conditioning (cooling) is the single largest use of electricity in both residential and commercial buildings with the major impact on peak electric demand. Improved air-conditioning technology has by far the greatest potential impact on the electric industry compared to any other technology that uses electricity. Thermally activated absorption air-conditioning (absorption chillers) can provide overall peak load reduction and electric grid relief for summer peak demand. This innovative absorption technology is based on integrated rotating heat exchangers to enhance heat and mass transfer resulting in a potential reduction of size, cost, and weight of the "next generation" absorption units. Rotartica Absorption Chiller (RAC) is a 4.5 kW (1.3 refrigeration tons or RT) air-cooled lithium bromide (LiBr)/water unit powered by hot water generated using the solar energy and/or waste heat. Typically LiBr/water absorption chillers are water-cooled units which use a cooling tower to reject heat. Cooling towers require a large amount of space, increase start-up and maintenance costs. However, RAC is an air-cooled absorption chiller (no cooling tower). The purpose of this evaluation is to verify RAC performance by comparing the Coefficient of Performance (COP or ratio of cooling capacity to energy input) and the cooling capacity results with those of the manufacturer. The performance of the RAC was tested at Oak Ridge National Laboratory (ORNL) in a controlled environment at various hot and chilled water flow rates, air handler flow rates, and ambient temperatures. Temperature probes, mass flow meters, rotational speed measuring device, pressure transducers, and a web camera mounted inside the unit were used to monitor the RAC via a web control-based data acquisition system using Automated Logic Controller (ALC). Results showed a COP and cooling capacity of approximately 0.58 and 3.7 kW respectively at 35 C (95 F) design condition for ambient temperature with 40 C (104 F) cooling water temperature. This is in close agreement with the manufacturer data of 0.60 for COP and 3.9 kW for cooling capacity. This study resulted in a complete performance map of RAC which will be used to evaluate the potential benefits of rotating heat exchangers in making the "next-generation" absorption chillers more compact and cost effective without any significant degradation in the performance. In addition, the feasibility of using rotating heat exchangers in other applications will be evaluated.

  12. Numerical Analysis of Water Temperature Distribution in the Tank of ASHPWH it ha Cylindrical Condenser

    E-Print Network [OSTI]

    Wang, D.; Shan, S.; Wang, R.

    2006-01-01T23:59:59.000Z

    presented a mathematic model for a cylindrical water tank with a cylindrical condenser as its heat source. The computational fluid dynamics (CFD) software package, FLUENT, was used to study hot water temperature distribution in the tank of the ASHPWH...

  13. A Water Conservation Scenario for the Residential and Industrial Sectors in California: Potential Saveings of Water and Related Energy

    E-Print Network [OSTI]

    Benenson, P.

    2010-01-01T23:59:59.000Z

    in Residential Hot Water Heaters. Berkeley, CA: Lawrenceelectricity savings because gas hot water heaters are moreprevalent than electric water heaters in California. Bathing

  14. Treatment of primary tailings and middlings from the hot water extraction process for recovering bitumen from tar sand

    SciTech Connect (OSTI)

    Cymbalisty, L. M. O.; Cymerman, J.

    1995-10-08T23:59:59.000Z

    The primary tailings and middlings are combined and fed to a vessel having the general form of a deep cone thickener. The feed is deflected outwardly and generally horizontally by a baffle, as it is delivered to the vessel. Simultaneously, the outwardly radiating layer of newly added feed is contacted from below by an upwelling stream of aerated middlings, which stream moves in parallel with the aforesaid layer. Bitumen froth is formed and recovered. The upwelling stream is provided by circulating middlings through eductor/aerator assemblies and a plenum chamber mounted centrally in the body of middlings in the vessel. A generally circular circulation of middlings is generated. In this manner, the newly added bitumen is quickly and efficiently recovered. Recirculation of middlings to the aeration zone yields an additional recovery of bitumen. Use of the deep cone ensures that the tailings from the vessel are relatively low in water and bitumen content.

  15. A Simple Method to Continuous Measurement of Energy Consumption of Tank Less Gas Water Heaters for Commercial Buildings

    E-Print Network [OSTI]

    Yamaha, M.; Fujita, M.; Miyoshi, T.

    2006-01-01T23:59:59.000Z

    energy consumptions of hot water supply in restaurants or residential houses are large amount, guidelines for optimal design are not presented. measurements of energy consumption of tank less gas water heaters very difficult unless gas flow meters...

  16. Evaluation of Hot Water Wash Parameters to Achieve Maximum Effectiveness in Reducing Levels of Salmonella Typhimurium, Escherichia coli O157:H7 and coliforms/Escherichia coli on Beef Carcass Surfaces

    E-Print Network [OSTI]

    Davidson, Melissa A.

    2010-07-14T23:59:59.000Z

    EVALUATION OF HOT WATER WASH PARAMETERS TO ACHIEVE MAXIMUM EFFECTIVENESS IN REDUCING LEVELS OF SALMONELLA TYPHIMURIUM, ESCHERICHIA COLI O157:H7 AND COLIFORMS/ ESCHERICHIA COLI ON BEEF CARCASS SURFACES A Thesis by MELISSA ANN DAVIDSON... PARAMETERS TO ACHIEVE MAXIMUM EFFECTIVENESS IN REDUCING LEVELS OF SALMONELLA TYPHIMURIUM, ESCHERICHIA COLI O157:H7 AND COLIFORMS/ ESCHERICHIA COLI ON BEEF CARCASS SURFACES A Thesis by MELISSA ANN DAVIDSON Submitted to the Office of Graduate...

  17. "Hot" for Warm Water Cooling

    SciTech Connect (OSTI)

    IBM Corporation; Energy Efficient HPC Working Group; Hewlett Packard Corporation; SGI; Cray Inc.; Intel Corporation; U.S. Army Engineer Research Development Center; Coles, Henry; Ellsworth, Michael; Martinez, David J.; Bailey, Anna-Maria; Banisadr, Farhad; Bates, Natalie; Coghlan, Susan; Cowley, David E.; Dube, Nicholas; Fields, Parks; Greenberg, Steve; Iyengar, Madhusudan; Kulesza, Peter R.; Loncaric, Josip; McCann, Tim; Pautsch, Greg; Patterson, Michael K.; Rivera, Richard G.; Rottman, Greg K.; Sartor, Dale; Tschudi, William; Vinson, Wade; Wescott, Ralph

    2011-08-26T23:59:59.000Z

    Liquid cooling is key to reducing energy consumption for this generation of supercomputers and remains on the roadmap for the foreseeable future. This is because the heat capacity of liquids is orders of magnitude larger than that of air and once heat has been transferred to a liquid, it can be removed from the datacenter efficiently. The transition from air to liquid cooling is an inflection point providing an opportunity to work collectively to set guidelines for facilitating the energy efficiency of liquid-cooled High Performance Computing (HPC) facilities and systems. The vision is to use non-compressor-based cooling, to facilitate heat re-use, and thereby build solutions that are more energy-efficient, less carbon intensive and more cost effective than their air-cooled predecessors. The Energy Efficient HPC Working Group is developing guidelines for warmer liquid-cooling temperatures in order to standardize facility and HPC equipment, and provide more opportunity for reuse of waste heat. This report describes the development of those guidelines.

  18. "Hot" for Warm Water Cooling

    E-Print Network [OSTI]

    Coles, Henry

    2012-01-01T23:59:59.000Z

    C: DIRECT LIQUID AND AIR COOLING COMPONENT TCASE FORECASTGRAPHICS Direct Liquid Cooling Thermal Components andThermal Design Margins Air Cooling Thermal Components and

  19. Solar Hot Water Contractor Licensing

    Broader source: Energy.gov [DOE]

    In order to be eligible for Maine's solar thermal rebate program, systems must be installed by licensed plumbers who have received additional certification for solar thermal systems from the North...

  20. "Hot" for Warm Water Cooling

    E-Print Network [OSTI]

    Coles, Henry

    2012-01-01T23:59:59.000Z

    points for maximum cooling liquid supply temperatures thatLiquid cooling guidelines may include: Supply temperatureliquid supply temperature for liquid cooling guidelines. Due

  1. "Hot" for Warm Water Cooling

    E-Print Network [OSTI]

    Coles, Henry

    2012-01-01T23:59:59.000Z

    defining liquid cooling guidelines for future use. The goalis key to reducing cooling energy consumption for futureliquid-cooling temperatures to guide future supercomputer

  2. "Hot" for Warm Water Cooling

    E-Print Network [OSTI]

    Coles, Henry

    2012-01-01T23:59:59.000Z

    This is because the heat capacity of liquids is orders ofthe heat capacity and transfer efficiency of liquids is

  3. "Hot" for Warm Water Cooling

    E-Print Network [OSTI]

    Coles, Henry

    2012-01-01T23:59:59.000Z

    Format Locations sorted by Dry Bulb Temperature Locationssorted by Wet Bulb Temperature 11. APPENDIX C: DIRECT LIQUIDis constrained by outdoor wet bulb temperature) or dry

  4. dist_hot_water.pdf

    Gasoline and Diesel Fuel Update (EIA)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Year-0E (2001)gasoline prices4 Oil demand Motor444 U.S.Working34 30

  5. Geothermal: Hot Documents Search

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Hot Documents Search Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us HomeBasic Search About Publications Advanced Search New Hot Docs News Related Links...

  6. 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...

  7. Desalination 187 (2006) 115126 Presented at the International Conference on Integrated Concepts on Water Recycling, Wollongong, NSW Australia,

    E-Print Network [OSTI]

    Newman, Michael C.

    2006-01-01T23:59:59.000Z

    produced guidance for water resource professionals with a strategy for assessing the community context water after it is treated in a modern wastewater treatment plant is an important and underutilized on Water Recycling, Wollongong, NSW Australia, 14≠17 February 2005. Public perception and participation

  8. Gas Water Heater Energy Losses

    E-Print Network [OSTI]

    Biermayer, Peter

    2012-01-01T23:59:59.000Z

    cold water to the water heater and hot water from the waterinduced draft water heaters, water heaters with flue designsInput Screens SCREEN D1: WATER HEATER SPECIFICATIONS 1. Tank

  9. Water Heaters and Hot Water Distribution Systems

    E-Print Network [OSTI]

    Lutz, Jim

    2012-01-01T23:59:59.000Z

    the California Building Energy Efficiency Standards (Titlethe 2008 California Building Energy Efficiency Standards forrevision to the Building Energy Efficiency Standards (Title

  10. 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.

  11. National Solar Water Heater Workshop Present at DOE Region V meeting for managers of State Energy Extension Service and State Energy Conservation Plan, March 18-19, 1981

    SciTech Connect (OSTI)

    Mumma, S.A.; Marinello, M.G.

    1981-01-01T23:59:59.000Z

    After a brief description of the National Solar Water Heater Workshop and some comments by users of the solar water heater, the hardware supplier handbook is presented. The performance expected of a hardware supplier is described, solar system components and their specifications are listed, and information is provided to assist the hardware supplier in obtaining necessary materials. (LEW)

  12. Performance of Gas-fired Water Heaters in a 10-home Field Study

    Broader source: Energy.gov [DOE]

    This presentation was given at the Summer 2012 DOE Building America meeting on July 25, 2012, and addressed the question "Are high-efficiency hot water heating systems worth the cost?"

  13. Storage capacity in hot dry rock reservoirs

    DOE Patents [OSTI]

    Brown, Donald W. (Los Alamos, NM)

    1997-01-01T23:59:59.000Z

    A method of extracting thermal energy, in a cyclic manner, from geologic strata which may be termed hot dry rock. A reservoir comprised of hot fractured rock is established and water or other liquid is passed through the reservoir. The water is heated by the hot rock, recovered from the reservoir, cooled by extraction of heat by means of heat exchange apparatus on the surface, and then re-injected into the reservoir to be heated again. Water is added to the reservoir by means of an injection well and recovered from the reservoir by means of a production well. Water is continuously provided to the reservoir and continuously withdrawn from the reservoir at two different flow rates, a base rate and a peak rate. Increasing water flow from the base rate to the peak rate is accomplished by rapidly decreasing backpressure at the outlet of the production well in order to meet periodic needs for amounts of thermal energy greater than a baseload amount, such as to generate additional electric power to meet peak demands. The rate of flow of water provided to the hot dry rock reservoir is maintained at a value effective to prevent depletion of the liquid

  14. Storage capacity in hot dry rock reservoirs

    DOE Patents [OSTI]

    Brown, D.W.

    1997-11-11T23:59:59.000Z

    A method is described for extracting thermal energy, in a cyclic manner, from geologic strata which may be termed hot dry rock. A reservoir comprised of hot fractured rock is established and water or other liquid is passed through the reservoir. The water is heated by the hot rock, recovered from the reservoir, cooled by extraction of heat by means of heat exchange apparatus on the surface, and then re-injected into the reservoir to be heated again. Water is added to the reservoir by means of an injection well and recovered from the reservoir by means of a production well. Water is continuously provided to the reservoir and continuously withdrawn from the reservoir at two different flow rates, a base rate and a peak rate. Increasing water flow from the base rate to the peak rate is accomplished by rapidly decreasing backpressure at the outlet of the production well in order to meet periodic needs for amounts of thermal energy greater than a baseload amount, such as to generate additional electric power to meet peak demands. The rate of flow of water provided to the hot dry rock reservoir is maintained at a value effective to prevent depletion of the liquid inventory of the reservoir. 4 figs.

  15. Climate Change Impacts on Texas Water: A White Paper Assessment of the Past, Present and Future and Recommendations for Action

    SciTech Connect (OSTI)

    Banner, Jay L.; Jackson, Charles S.; Yang, Zong-Liang; Hayhoe, Katharine; Woodhouse, Connie; Gulden, Lindsey; Jacobs, Kathy; North, Gerald; Leung, Lai-Yung R.; Washington, Warren M.; Jiang, Xiaoyan; Casteel, Richard

    2010-09-01T23:59:59.000Z

    Texas comprises the eastern portion of the Southwest region, where the convergence of climatological and geopolitical forces has the potential to put extreme stress on water resources. Geologic records indicate that Texas experienced large climate changes on millennial time scales in the past, and over the last thousand years, tree-ring records indicate that there were significant periods of drought in Texas. These droughts were of longer duration than the 1950s 'drought of record' that is commonly used in planning, and they occurred independently of human-induced global climate change. Although there has been a negligible net temperature increase in Texas over the past century, temperatures have increased more significantly over the past three decades. Under essentially all climate model projections, Texas is susceptible to significant climate change in the future. Most projections for the 21st century show that with increasing atmospheric greenhouse gas concentrations, there will be an increase in temperatures across Texas and a shift to a more arid average climate. Studies agree that Texas will likely become significantly warmer and drier, yet the magnitude, timing, and regional distribution of these changes are uncertain. There is a large uncertainty in the projected changes in precipitation for Texas for the 21st century. In contrast, the more robust projected increase in temperature with its effect on evaporation, which is a dominant component in the region's hydrologic cycle, is consistent with model projections of frequent and extended droughts throughout the state. For these reasons, we recommend that Texas invest resources to investigate and anticipate the impacts of climate change on Texas water resources, with the goal of providing data to inform resource planning. This investment should support development of (1) research programs that provide policy-relevant science; (2) education programs to engage future researchers and policy-makers; and (3) connections between policy-makers, scientists, water resource managers, and other stakeholders. It is proposed that these goals may be achieved through the establishment of a Texas Climate Consortium, consisting of representatives from academia, industry, government agencies, water authorities, and other stakeholders. The mission of this consortium would be to develop the capacity to provide decision makers with the information needed to develop adaptation strategies in the face of future climate change and uncertainty.

  16. Presented at 2012 IEEE Systems and Information Engineering Design Symposium, University of Virginia, April 27, 2012 Abstract--The water quality in the West and Rhode Rivers

    E-Print Network [OSTI]

    Presented at 2012 IEEE Systems and Information Engineering Design Symposium, University of Virginia, April 27, 2012 Abstract-- The water quality in the West and Rhode Rivers (WRR), two mezohaline sub be the most cost-effective and sustainable alternative. I. INTRODUCTION HE West and Rhode rivers are two sub

  17. Method and apparatus for separation of heavy and tritiated water

    DOE Patents [OSTI]

    Lee, Myung W. (late of North Augusta, SC)

    2001-01-01T23:59:59.000Z

    The present invention is a bi-thermal membrane process for separating and recovering hydrogen isotopes from a fluid containing hydrogen isotopes, such as water and hydrogen gas. The process in accordance with the present invention provides counter-current cold and hot streams of the fluid separated with a thermally insulating and chemically transparent proton exchange membrane (PEM). The two streams exchange hydrogen isotopes through the membrane: the heavier isotopes migrate into the cold stream, while the lighter isotopes migrate into the hot stream. The heavy and light isotopes are continuously withdrawn from the cold and hot streams respectively.

  18. Laboratory Performance Evaluation of Residential Integrated Heat Pump Water Heaters

    SciTech Connect (OSTI)

    Sparn, B.; Hudon, K.; Christensen, D.

    2011-09-01T23:59:59.000Z

    This report discusses how a significant opportunity for energy savings is domestic hot water heating, where an emerging technology has recently arrived in the U.S. market: the residential integrated heat pump water heater. A laboratory evaluation is presented of the five integrated HPWHs available in the U.S. today.

  19. Geothermal resource assessment of Hot Sulphur Springs, Colorado

    SciTech Connect (OSTI)

    Pearl, R.H.; Zacharakis, T.G.; Ringrose, C.D.

    1982-01-01T23:59:59.000Z

    Approximately 10 springs whose waters are used for recreation, steam baths and laundry purposes are located at Hot Sulphur Springs. Estimated heat-flow at Hot Sulphur Springs is approximately 100 mW/m2, which is about normal for western Colorado. Recent work tends to show that surface and reduced heat flow in the mountains of northern Colorado could be high. The thermal waters have an estimated discharge of 50 gpm, a temperature that ranges from 104/sup 0/F (40/sup 0/C) to a high of 111/sup 0/F (44/sup 0/C), and a total dissolved solid content of 1200 mg/l. The waters are a sodium bicarbonate type with a large concentration of sulphate. It is estimated that the most likely reservoir temperature of this system ranges from 167/sup 0/F (75/sup 0/F) to 302/sup 0/F (150/sup 0/C) and that the areal extent of the system could encompass 1.35 sq mi (3.50 sq km) and could contain 0.698 Q's (1015 B.T.U.'s) of heat energy. Soil mercury and electrical resistivity surveys were conducted. The geophysical survey delineated several areas of low resistivity associated with the north trending fault that passes just to the west of the spring area. It appears that this fault is saturated with thermal waters and may be the conduit along which the thermal waters are moving up from depth. The appendices to this report include tables showing water temperatures required for various industrial processes, as well as dissolved minerals, trace elements and radioactivity levels found in the thermal waters. Also presented are a complete description of the factors affecting the electrical resistivity measurements, a description of the electrical resistivity equipment used, and the resistivity field procedures. Electrical resistivity calculations are also included in the appendices.

  20. Florida Sunshine -- Natural Source for Heating Water

    SciTech Connect (OSTI)

    Not Available

    2002-05-01T23:59:59.000Z

    This brochure, part of the State Energy Program (SEP) Stellar Project series, describes a utility solar hot water program in Lakeland, Florida. It is the first such utility-run solar hot water program in the country.

  1. Presentations Giving Effective Presentations

    E-Print Network [OSTI]

    . THE CONCLUSION Restate the purpose/thesis and summarize the main points. End with strength by sharing an insight of a friend for feedback. Keep going over the presentation in your daily life ­ in the shower, car etc. Know

  2. Presentations: Giving Effective Presentations

    E-Print Network [OSTI]

    speaking in public in lowrisk, unevaluated situations, such as the Student Learning Commons' English the whole presentation. o Focus on learning the flow of ideas rather than exact wording. o Memorize small. The Student Learning Commons offers PowerPoint workshops for students. See the schedule at http://workshops.learning

  3. Hot Summer | Jefferson Lab

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School football Highdefault Sign InData inmaxHorizontalHot PlateHotHot

  4. Hot and dark matter

    E-Print Network [OSTI]

    D'Eramo, Francesco

    2012-01-01T23:59:59.000Z

    In this thesis, we build new Effective Field Theory tools to describe the propagation of energetic partons in hot and dense media, and we propose two new reactions for dark matter in the early universe. In the first part, ...

  5. Tankless Gas Water Heater Performance - Building America Top...

    Energy Savers [EERE]

    Tankless Gas Water Heater Performance - Building America Top Innovation Tankless Gas Water Heater Performance - Building America Top Innovation This photo shows a hot water heater...

  6. Hot air drum evaporator. [Patent application

    DOE Patents [OSTI]

    Black, R.L.

    1980-11-12T23:59:59.000Z

    An evaporation system for aqueous radioactive waste uses standard 30 and 55 gallon drums. Waste solutions form cascading water sprays as they pass over a number of trays arranged in a vertical stack within a drum. Hot dry air is circulated radially of the drum through the water sprays thereby removing water vapor. The system is encased in concrete to prevent exposure to radioactivity. The use of standard 30 and 55 gallon drums permits an inexpensive compact modular design that is readily disposable, thus eliminating maintenance and radiation build-up problems encountered with conventional evaporation systems.

  7. To What Extent Does Terrestrial Life ``Follow The Water''? Eriita G. Jones and Charles H. Lineweaver

    E-Print Network [OSTI]

    Lineweaver, Charles H.

    uninhabited, we present empirical pressure-temperature (P-T ) phase diagrams of water, Earth, and terrestrial. This potentially uninhabited terrestrial liquid water includes (i) hot and deep regions of Earth where some combination of high temperature (T > 1228C) and restrictions on pore space, nu- trients, and energy

  8. IR Hot Wave

    SciTech Connect (OSTI)

    Graham, T. B.

    2010-04-01T23:59:59.000Z

    The IR Hot Wave{trademark} furnace is a breakthrough heat treatment system for manufacturing metal components. Near-infrared (IR) radiant energy combines with IR convective heating for heat treating. Heat treatment is an essential process in the manufacture of most components. The controlled heating and cooling of a metal or metal alloy alters its physical, mechanical, and sometimes chemical properties without changing the object's shape. The IR Hot Wave{trademark} furnace offers the simplest, quickest, most efficient, and cost-effective heat treatment option for metals and metal alloys. Compared with other heat treatment alternatives, the IR Hot Wave{trademark} system: (1) is 3 to 15 times faster; (2) is 2 to 3 times more energy efficient; (3) is 20% to 50% more cost-effective; (4) has a {+-}1 C thermal profile compared to a {+-}10 C thermal profile for conventional gas furnaces; and (5) has a 25% to 50% smaller footprint.

  9. A version of this paper will be presented at the Fifth Dubrovnik Conference on Sustainable Development of Energy, Water, and Environment Systems in Dubrovnik, Croatia, September

    E-Print Network [OSTI]

    Hughes, Larry

    Development of Energy, Water, and Environment Systems in Dubrovnik, Croatia, September 2009. ERG/200905 Energy

  10. PowerPoint Presentation

    Office of Environmental Management (EM)

    Ground Water Issues Presentation for DOE Tritium Focus Group May 5-6, 2015 Steven M. Garry, CHP US Nuclear Regulatory Commission NRRDRAARCB Tritium Leaks * Approximately 70% of...

  11. PRESENTATION TITLE

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Update - Cultural Resources Impacts Arkansas River Navigation Improvement Oklahoma Comprehensive Water Plan Update BUILDING STRONG Interior Least Tern Operations and...

  12. Energy-efficient water heating

    SciTech Connect (OSTI)

    NONE

    1995-01-01T23:59:59.000Z

    This fact sheet describes how to reduce the amount of hot water used in faucets and showers, automatic dishwashers, and washing machines; how to increase water-heating system efficiency by lowering the water heater thermostat, installing a timer and heat traps, and insulating hot water pipes and the storage tank; and how to use off-peak power to heat water. A resource list for further information is included.

  13. Commercial Solar Hot Water Financing Program

    Broader source: Energy.gov [DOE]

    A variety of financing options will be available depending on the project, including power purchase agreements or energy service agreements. A third party will finance the construction, maintenan...

  14. Hot Water Distribution System Model Enhancements

    SciTech Connect (OSTI)

    Hoeschele, M.; Weitzel, E.

    2012-11-01T23:59:59.000Z

    This project involves enhancement of the HWSIM distribution system model to more accurately model pipe heat transfer. Recent laboratory testing efforts have indicated that the modeling of radiant heat transfer effects is needed to accurately characterize piping heat loss. An analytical methodology for integrating radiant heat transfer was implemented with HWSIM. Laboratory test data collected in another project was then used to validate the model for a variety of uninsulated and insulated pipe cases (copper, PEX, and CPVC). Results appear favorable, with typical deviations from lab results less than 8%.

  15. The Successful Design Construction and 'Live-ability' of an Energy Efficient Home in a Hot and Humid Climate

    E-Print Network [OSTI]

    Gardner, J. C.

    2006-01-01T23:59:59.000Z

    clothes washer null Energy Star Hunter ceiling fans null 90% of the lighting is fluorescent null Gas fired water heater with solar assist For those ten really cold days in winter we have a wood burning stove with catalytic converter to supplement...The Successful Design, Construction and ďLive-abilityĒ of an Energy Efficient Home in a Hot and Humid Climate John C. Gardner, PE Hockley, Texas 77447 ABSTRACT This paper will present a case study of an energy efficient home...

  16. Considerations for Energy Efficient Showers in Hot-Humid Climates

    E-Print Network [OSTI]

    Claridge, D. E.; Turner, W. D.

    1989-01-01T23:59:59.000Z

    CONSIDERATIONS FOR ENERGY EFFICIENT SHOWERS IN HOT-HUMID CLIMATES D. E. Claridge and W.D. Turner Energy Systems Laboratory Department of Mechanical Engineering Texas ALM University ABSTRACT Measurements have been conducted on four low... for typical operation in Texas. This has significant implications for everyone who purchases or uses showerheads; this is particularly true in hot climates where supply water temperatures are relatively high. TESTS CONDUCTED Showerheads Tested Two...

  17. Working in Hot Weather or Hot Workplace Environments Subject: Procedures and Guidelines for Working in Hot Environments

    E-Print Network [OSTI]

    Lennard, William N.

    Working in Hot Weather or Hot Workplace Environments Subject: Procedures and Guidelines for Working is intended to prevent potential heat induced illness as a result of hot weather or hot workplace environments in hot weather or hot workplace environments. The following parameters will serve as triggers

  18. Hot topics in flavor physics at CDF

    SciTech Connect (OSTI)

    Jun, Soon Yung; /Carnegie Mellon U.

    2005-01-01T23:59:59.000Z

    Hot topics in flavor physics at CDF are reviewed. Selected results of top, beauty, charm physics and exotic states in about 200 pb{sup -1} data collected by the CDF II detector in p{bar p} collisions at {radical}s = 1.96 TeV at the Fermilab Tevatron are presented.

  19. Kepler constraints on planets near hot Jupiters

    SciTech Connect (OSTI)

    Steffen, Jason H.; /Fermilab; Ragozzine, Darin; /Harvard-Smithsonian Ctr. Astrophys.; Fabrycky, Daniel C.; /UC, Santa Cruz, Astron. Astrophys.; Carter, Joshua A.; /Harvard-Smithsonian Ctr. Astrophys.; Ford, Eric B.; /Florida U.; Holman, Matthew J.; /Harvard-Smithsonian Ctr. Astrophys.; Rowe, Jason F.; /NASA, Ames; Welsh, William F.; /San Diego State U., Astron. Dept.; Borucki, William J.; /NASA, Ames; Boss, Alan P.; /Carnegie Inst., Wash., D.C., DTM; Ciardi, David R.; /Caltech /Harvard-Smithsonian Ctr. Astrophys.

    2012-05-01T23:59:59.000Z

    We present the results of a search for planetary companions orbiting near hot Jupiter planet candidates (Jupiter-size candidates with orbital periods near 3 d) identified in the Kepler data through its sixth quarter of science operations. Special emphasis is given to companions between the 2:1 interior and exterior mean-motion resonances. A photometric transit search excludes companions with sizes ranging from roughly two-thirds to five times the size of the Earth, depending upon the noise properties of the target star. A search for dynamically induced deviations from a constant period (transit timing variations) also shows no significant signals. In contrast, comparison studies of warm Jupiters (with slightly larger orbits) and hot Neptune-size candidates do exhibit signatures of additional companions with these same tests. These differences between hot Jupiters and other planetary systems denote a distinctly different formation or dynamical history.

  20. An International Survey of Electric Storage Tank Water Heater Efficiency and Standards

    E-Print Network [OSTI]

    Johnson, Alissa

    2013-01-01T23:59:59.000Z

    blankets to electric hot water heaters in South Africa,Ē J.for Residential Water Heaters, Direct Heating Equipment, andfor Residential Water Heaters, Direct Heating Equipment, and

  1. Heat Pump Water Heaters and American Homes: A Good Fit?

    SciTech Connect (OSTI)

    Franco, Victor; Lekov, Alex; Meyers, Steve; Letschert, Virginie

    2010-05-14T23:59:59.000Z

    Heat pump water heaters (HPWHs) are over twice as energy-efficient as conventional electric resistance water heaters, with the potential to save substantial amounts of electricity. Drawing on analysis conducted for the U.S. Department of Energy's recently-concluded rulemaking on amended standards for water heaters, this paper evaluates key issues that will determine how well, and to what extent, this technology will fit in American homes. The key issues include: 1) equipment cost of HPWHs; 2) cooling of the indoor environment by HPWHs; 3) size and air flow requirements of HPWHs; 4) performance of HPWH under different climate conditions and varying hot water use patterns; and 5) operating cost savings under different electricity prices and hot water use. The paper presents the results of a life-cycle cost analysis of the adoption of HPWHs in a representative sample of American homes, as well as national impact analysis for different market share scenarios. Assuming equipment costs that would result from high production volume, the results show that HPWHs can be cost effective in all regions for most single family homes, especially when the water heater is not installed in a conditioned space. HPWHs are not cost effective for most manufactured home and multi-family installations, due to lower average hot water use and the water heater in the majority of cases being installed in conditioned space, where cooling of the indoor environment and size and air flow requirements of HPWHs increase installation costs.

  2. Pilgrim Hot Springs, Alaska

    Energy Savers [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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO2:Introduction toManagementOPAM5Parabolic TroughPhotoCell StructureUranium MillPilgrim Hot

  3. Hot Plate Station

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School football Highdefault Sign InData inmaxHorizontalHot Plate

  4. Idaho_HotSprings

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School footballHydrogenIT |Hot Springs Site #0104 Latitude: N. 43 deg.

  5. Evaluation of Energy Efficiency Measures in Hot and Humid Climates

    E-Print Network [OSTI]

    Zhao, Y.; Erwine, B.; Leonard, P.; Pease, B.; Dole, A.; Lee, A.

    Hot and humid climates present some of the most complex challenges for sustainable building designs. High temperatures coupled with high humidity create extreme comfort problems and exacerbate the potential for condensation, mold and mildew...

  6. Hot Dry Rock; Geothermal Energy

    SciTech Connect (OSTI)

    None

    1990-01-01T23:59:59.000Z

    The commercial utilization of geothermal energy forms the basis of the largest renewable energy industry in the world. More than 5000 Mw of electrical power are currently in production from approximately 210 plants and 10 000 Mw thermal are used in direct use processes. The majority of these systems are located in the well defined geothermal generally associated with crustal plate boundaries or hot spots. The essential requirements of high subsurface temperature with huge volumes of exploitable fluids, coupled to environmental and market factors, limit the choice of suitable sites significantly. The Hot Dry Rock (HDR) concept at any depth originally offered a dream of unlimited expansion for the geothermal industry by relaxing the location constraints by drilling deep enough to reach adequate temperatures. Now, after 20 years intensive work by international teams and expenditures of more than $250 million, it is vital to review the position of HDR in relation to the established geothermal industry. The HDR resource is merely a body of rock at elevated temperatures with insufficient fluids in place to enable the heat to be extracted without the need for injection wells. All of the major field experiments in HDR have shown that the natural fracture systems form the heat transfer surfaces and that it is these fractures that must be for geothermal systems producing from naturally fractured formations provide a basis for directing the forthcoming but, equally, they require accepting significant location constraints on HDR for the time being. This paper presents a model HDR system designed for commercial operations in the UK and uses production data from hydrothermal systems in Japan and the USA to demonstrate the reservoir performance requirements for viable operations. It is shown that these characteristics are not likely to be achieved in host rocks without stimulation processes. However, the long term goal of artificial geothermal systems developed by systematic engineering procedures at depth may still be attained if high temperature sites with extensive fracturing are developed or exploited. [DJE -2005

  7. Presented by the National High Magnetic Field Laboratory

    E-Print Network [OSTI]

    Weston, Ken

    ! Cooling holes on the Bitter plates let cold water run through the magnet so it doesn't get too hot. l magnets found in houses. The answers will fit into the crossword puzzle below. ACROSS Where you store milk

  8. Present State of the Hydrothermal System in Long Valley Caldera...

    Open Energy Info (EERE)

    Valley caldera to be delineated. The model consists of two principal zones in which hot water flows laterally from west to east at depths less than 1 km within and around the...

  9. Hot hollow cathode gun assembly

    DOE Patents [OSTI]

    Zeren, J.D.

    1983-11-22T23:59:59.000Z

    A hot hollow cathode deposition gun assembly includes a hollow body having a cylindrical outer surface and an end plate for holding an adjustable heat sink, the hot hollow cathode gun, two magnets for steering the plasma from the gun into a crucible on the heat sink, and a shutter for selectively covering and uncovering the crucible.

  10. Hot Dry Rock Geothermal Energy Development Program

    SciTech Connect (OSTI)

    Smith, M.C.; Hendron, R.H.; Murphy, H.D.; Wilson, M.G.

    1989-12-01T23:59:59.000Z

    During Fiscal Year 1987, emphasis in the Hot Dry Rock Geothermal Energy Development Program was on preparations for a Long-Term Flow Test'' of the Phase II'' or Engineering'' hot dry rock energy system at Fenton Hill, New Mexico. A successful 30-day flow test of the system during FY86 indicated that such a system would produce heat at a temperature and rate that could support operation of a commercial electrical power plant. However, it did not answer certain questions basic to the economics of long-term operation, including the rate of depletion of the thermal reservoir, the rate of water loss from the system, and the possibility of operating problems during extended continuous operation. Preparations for a one-year flow test of the system to answer these and more fundamental questions concerning hot dry rock systems were made in FY87: design of the required surface facilities; procurement and installation of some of their components; development and testing of slimline logging tools for use through small-diameter production tubing; research on temperature-sensitive reactive chemical tracers to monitor thermal depletion of the reservoir; and computer simulations of the 30-day test, extended to modeling the planned Long-Term Flow Test. 45 refs., 34 figs., 5 tabs.

  11. Quantification of thermophilic archaea and bacteria in a Nevada hot spring using fluorescent in situ hybridization

    E-Print Network [OSTI]

    Walker, Lawrence R.

    in situ hybridization Abstract Previous studies of high temperature hot springs in Yellowstone National temperatures. The cells, which were concentrated from 300 liters of hot spring water through tangential flow dominate in high-temperature environments such as Yellowstone National Park. However, our study indicates

  12. Steam treatment of surface soil: how does it affect water-soluble organic matter, C mineralization, and bacterial community composition?

    E-Print Network [OSTI]

    Roux-Michollet, Dad; Dudal, Yves; Jocteur-Monrozier, Lucile; Czarnes, Sonia

    2010-01-01T23:59:59.000Z

    organic components Water extraction was performed by shakingresulting from hot water extraction, as measured by Sparlingboiling soil in water resulted in the extraction of both

  13. Energy and Economic Impacts of U.S. Federal Energy and Water Conservation Standards Adopted From 1987 Through 2011

    E-Print Network [OSTI]

    Meyers, Stephen

    2013-01-01T23:59:59.000Z

    conditioners and heat pumps, and water heaters We modifiedConditioners and Heat Pumps NAECA 1987 Water Heaters NAECAConditioners and Heat Pumps EPACT 1992 Water Heaters, Hot

  14. Energy and Economic Impacts of U.S. Federal Energy and Water Conservation Standards Adopted From 1987 Through 2010

    E-Print Network [OSTI]

    Meyers, Stephen

    2013-01-01T23:59:59.000Z

    conditioners and heat pumps, and water heaters We modifiedConditioning Heat Pumps NAECA 1987 Water Heaters NAECA 1987Conditioners and Heat Pumps EPACT 1992 Water Heaters, Hot

  15. Energy and Economic Impacts of U.S. Federal Energy and Water Conservation Standards Adopted From 1987 through 2012

    E-Print Network [OSTI]

    Meyers, Stephen

    2013-01-01T23:59:59.000Z

    conditioners and heat pumps, and water heaters We modifiedConditioners and Heat Pumps NAECA 1987 Water Heaters NAECAConditioners and Heat Pumps EPACT 1992 Water Heaters, Hot

  16. Geothermal Exploration in Hot Springs, Montana

    SciTech Connect (OSTI)

    Toby McIntosh, Jackola Engineering

    2012-09-26T23:59:59.000Z

    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√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬įF 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√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬? 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 √?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?center√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Ě 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√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬įF 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

  17. Turbodrilling in the hot-hole environment

    SciTech Connect (OSTI)

    Herbert, P.

    1982-10-01T23:59:59.000Z

    Historically, geothermal and other types of hot-hole drilling have presented what seemed to be insurmountable barriers to efficient and extended use of downhole drilling motors, particularly those containing elastomeric bearing or motor components. Typical temperatures of 350 to 700/sup 0/F (177 to 371/sup 0/C) damage the elastomers and create other operating problems, reducing the life of the motors and their ability to drill efficiently. Recent innovations in turbodrill design have opened heretofore unrealized potentials and have allowed, for the first time, extended downhole drilling time in hot-hole conditions. The unique feature of this turbodrill is the lack of any elastomers or other temperature-sensitive materials. Its capabilities are matched closely to the requirements of drilling in elevated-temperature environments. The bearing assembly can withstand conditions encountered in typical geothermal formations and provides the performance necessary to stay in the hole. The result is increased rate of penetration (ROP) and more economical drilling.

  18. Multiple hot images from an obscuration in an intense laser beam through cascaded Kerr medium disks

    SciTech Connect (OSTI)

    Wang Youwen; Wen Shuangchun; You Kaiming; Tang Zhixiang; Deng Jianqin; Zhang Lifu; Fan Dianyuan

    2008-10-20T23:59:59.000Z

    We present a theoretical investigation on the formation of hot images in an intense laser beam through cascaded Kerr medium disks, to disclose the distribution and intensity of hot images in high-power disk amplifiers. It is shown that multiple hot images from an obscuration may be formed, instead of one hot image as reported previously in the literature. This gives a clear explanation for the curious damage pattern of hot images, namely, damage sites appearing on alternating optics in periodic trains. Further analysis demonstrates that the distribution and intensity of hot images depend closely on the number of Kerr medium disks, the distance from the obscuration to the front of the first disk downstream, the space between two neighboring disks, and the thickness and B integral of each disk. Moreover, we take two cascaded Kerr medium disks for example to detail multiple hot images from an obscuration and confirm the theoretical results by numerical simulations.

  19. Hot carrier diffusion in graphene

    E-Print Network [OSTI]

    Ruzicka, Brian Andrew; Wang, Shuai; Werake, Lalani Kumari; Weintrub, Ben; Loh, Kian Ping; Zhao, Hui

    2010-11-01T23:59:59.000Z

    We report an optical study of charge transport in graphene. Diffusion of hot carriers in epitaxial graphene and reduced graphene oxide samples are studied using an ultrafast pump-probe technique with a high spatial resolution. Spatiotemporal...

  20. The decay of hot nuclei

    SciTech Connect (OSTI)

    Moretto, L.G.; Wozniak, G.J.

    1988-11-01T23:59:59.000Z

    The formation of hot compound nuclei in intermediate-energy heavy ion reactions is discussed. The statistical decay of such compound nuclei is responsible for the abundant emission of complex fragments and high energy gamma rays. 43 refs., 23 figs.

  1. Coping with Hot Work Environments

    E-Print Network [OSTI]

    Smith, David

    2005-04-28T23:59:59.000Z

    exposed to these conditions. A hot work environment can impair safety and health. Both workers and their employers are responsi- ble for taking steps to prevent heat stress in the work- place. How Your Body Handles Heat Humans are warm-blooded, which... evaporation. Wiping sweat from the skin with a cloth also prevents cooling from evaporation. In hot, humid conditions, hard work becomes harder. The sweat glands release moisture and essential David W. Smith, Extension Safety Program The Texas A...

  2. Hot Pot Detail - Evidence of Quaternary Faulting

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

    Lane, Michael

    Compilation of published data, field observations and photo interpretation relevant to Quaternary faulting at Hot Pot.

  3. Hot Pot Detail - Evidence of Quaternary Faulting

    SciTech Connect (OSTI)

    Lane, Michael

    2013-06-27T23:59:59.000Z

    Compilation of published data, field observations and photo interpretation relevant to Quaternary faulting at Hot Pot.

  4. PowerPoint Presentation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    relevance to Astrophysics and Inertial Confinement Fusion (ICF) Afterglow of gamma ray bursts Hot electron transport for Fast Igniter -- ICF Characteristics of CFI...

  5. IMAGING-BASED OPTICAL CALIPER FOR OBJECTS IN HOT MANUFACTURING PROCESSES

    SciTech Connect (OSTI)

    Huang, Howard

    2013-04-03T23:59:59.000Z

    OG Technologies, Inc. (OGT), in conjunction with its industrial and academic partners, proposes to develop an √ʬ?¬?Imaging-Based Optical Caliper (hereafter referred to as √ʬ?¬?OC√ʬ?¬Ě) for Objects in Hot Manufacturing Processes√ʬ?¬Ě. The goal is to develop and demonstrate the OC with the synergy of OGT√ʬ?¬?s current technological pool and other innovations to provide a light weight, robust, safe and accurate portable dimensional measurement device for hot objects with integrated wireless communication capacity to enable real time process control. The technical areas of interest in this project are the combination of advanced imaging, Sensor Fusion, and process control. OGT believes that the synergistic interactions between its current set of technologies and other innovations could deliver products that are viable and have high impact in the hot manufacture processes, such as steel making, steel rolling, open die forging, and glass industries, resulting in a new energy efficient control paradigm in the operations through improved yield, prolonged tool life and improved quality. In-line dimension measurement and control is of interest to the steel makers, yet current industry focus is on the final product dimension only instead of whole process due to the limit of man power, system cost and operator safety concerns. As sensor technologies advances, the industry started to see the need to enforce better dimensional control throughout the process, but lack the proper tools to do so. OGT along with its industrial partners represent the indigenous effort of technological development to serve the US steel industry. The immediate market that can use and get benefited from the proposed OC is the Steel Industry. The deployment of the OC has the potential to provide benefits in reduction of energy waste, CO2 emission, waste water amount, toxic waste, and so forth. The potential market after further expended function includes Hot Forging and Freight Industries. The OC prototypes were fabricated, and were progressively tested on-site in several steel mill and hot forging facilities for evaluation. Software refinements and new calibration procedures were also carried out to overcome the discovered glitches. Progress was presented to the hot manufacture facilities worldwide. Evidence showed a great interest and practical need for this product. OGT is in the pilot commercialization mode for this new development. The R&D team also successfully developed a 3D measurement function with no additional investment of hardware or equipment to measure low or room temperature object dimensions. Several tests were conducted in the reality environment to evaluate the measurement results. This new application will require additional development in product design.

  6. Sol Duc Hot Springs feasibility study

    SciTech Connect (OSTI)

    Not Available

    1981-12-01T23:59:59.000Z

    Sol Duc Springs is located in the Olympic National Park in western Washington state. Since the turn of the century, the area has served as a resort, offering hot mineral baths, lodge and overnight cabin accommodations. The Park Service, in conjunction with the concessionaire, is in the process of renovating the existing facilities, most of which are approximately 50 years old. The present renovation work consists of removing all of the existing cabins and replacing them with 36 new units. In addition, a new hot pool is planned to replace the existing one. This report explores the possibility of a more efficient use of the geothermal resource to accompany other planned improvements. It is important to note that the system outlined is based upon the resource development as it exists currently. That is, the geothermal source is considered to be: the two existing wells and the hot springs currently in use. In addition, every effort has been made to accommodate the priorities for utilization as set forth by the Park Service.

  7. SMUD- Solar Water Heater Rebate Program

    Broader source: Energy.gov [DOE]

    The Sacramento Municipal Utility District's (SMUD) Solar Domestic Hot Water Program provides rebates and/or loan financing to customers who install solar water heating systems. The amount of the...

  8. Hot dry rock geothermal energy. Draft final report

    SciTech Connect (OSTI)

    Not Available

    1994-09-01T23:59:59.000Z

    This second EPRI workshop on hot dry rock (HDR) geothermal energy, held in May 1994, focused on the status of worldwide HDR research and development and used that status review as the starting point for discussions of what could and should be done next: by U.S. federal government, by U.S. industry, by U.S. state governments, and by international organizations or through international agreements. The papers presented and the discussion that took place indicate that there is a community of researchers and industrial partners that could join forces, with government support, to begin a new effort on hot dry rock geothermal development. This new heat mining effort would start with site selection and confirmatory studies, done concurrently. The confirmatory studies would test past evaluations against the most current results (from the U.S. site at Fenton Hill, New Mexico, and from the two sites in Japan, the one in Russia, and the two in western Europe) and the best models of relevant physical and economic aspects. Site selection would be done in the light of the confirmatory studies and would be influenced by the need to find a site where success is probable and which is representative enough of other sites so that its success would imply good prospects for success at numerous other sites. The test of success would be circulation between a pair of wells, or more wells, in a way that confirmed, with the help of flow modeling, that a multi-well system would yield temperatures, flows and lifetimes that support economically feasible power generation. The flow modeling would have to have previously achieved its own confirmation from relevant data taken from both heat mining and conventional hydrothermal geothermal experience. There may be very relevant experience from the enhancement of ''hot wet rock'' sites, i.e., sites where hydrothermal reservoirs lack, or have come to lack, enough natural water or steam and are helped by water injected cold and produced hot. The new site would have to be selected in parallel with the confirmatory studies because it would have to be modeled as part of the studies and because its similarity to other candidate sites must be known well enough to assure that results at the selected site are relevant to many others. Also, the industry partners in the joint effort at the new site must be part of the confirmatory studies, because they must be convinced of the economic feasibility. This meeting may have brought together the core of people who can make such a joint effort take place. EPRI sponsored the organization of this meeting in order to provide utilities with an update on the prospects for power generation via heat mining. Although the emerging rules for electric utilities competing in power generation make it very unlikely that the rate-payers of any one utility (or small group of utilities) can pay the differential to support this new heat mining research and development effort, the community represented at this meeting may be able to make the case for national or international support of a new heat mining effort, based on the potential size and economics of this resource as a benefit for the nation as a whole and as a contribution to reduced emissions of fossil CO{sub 2} worldwide.

  9. Hot Beverages Cold Beverages

    E-Print Network [OSTI]

    New Hampshire, University of

    Juices $3.19 Vitamin Water $1.79 Java Tree Iced Coffee $2.59 Milk, 2% or Low Fat $1.39 20 oz. Coke Products $1.39 Energy Drinks Rockstar $2.39 Full Throttle $2.39 Red Bull Energy Drink $2.39 Rejuvenation in a sustainable way. 12 oz. 16 oz. 20 oz. House Blend $1.69 $1.79 $1.90 French Roast $1.69 $1.79 $1.90 Decaf Dark

  10. air-water interactions: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    HOT WATER & POOL REQUIREMENTS CEC-MECH-2C (Revised 0809) CALIFORNIA ENERGY COMMISSION WATER SIDE SYSTEM REQUIREMENTS (Part 2 27 AIR-WATER GAS EXCHANGE: MECHANISMS GOVERNING THE...

  11. Building America: The Advanced Whole-Home Efficiency Program (Presentation)

    SciTech Connect (OSTI)

    Engebrecht, C.

    2012-02-01T23:59:59.000Z

    This presentation discusses the Building America Program. This presentation discusses the background and goals of the program. A few hot topic technologies are discussed. Outreach activities are discussed as well.

  12. Hot conditioning equipment conceptual design report

    SciTech Connect (OSTI)

    Bradshaw, F.W., Westinghouse Hanford

    1996-08-06T23:59:59.000Z

    This report documents the conceptual design of the Hot Conditioning System Equipment. The Hot conditioning System will consist of two separate designs: the Hot Conditioning System Equipment; and the Hot Conditioning System Annex. The Hot Conditioning System Equipment Design includes the equipment such as ovens, vacuum pumps, inert gas delivery systems, etc.necessary to condition spent nuclear fuel currently in storage in the K Basins of the Hanford Site. The Hot Conditioning System Annex consists of the facility of house the Hot Conditioning System. The Hot Conditioning System will be housed in an annex to the Canister Storage Building. The Hot Conditioning System will consist of pits in the floor which contain ovens in which the spent nuclear will be conditioned prior to interim storage.

  13. Spring 2009 Student Presentations COMPUTER NETWORK & SYSTEM ADMINISTRATION PROGRAM

    E-Print Network [OSTI]

    advantage of passive solar heating and natural lighting. · Use of solar energy to provide all electrical power needs and most of the domestic hot water. · Auxiliary water and space heating provided by creative materials such as R-20 windows and insulating wall panels made from rice hulls. · Site renovation using

  14. Hot Gas Halos in Galaxies

    SciTech Connect (OSTI)

    Mulchaey, John S. [Carnegie Observatories (United States); Jeltema, Tesla E. [UCO/Lick Observatories (United States)

    2010-06-08T23:59:59.000Z

    We use Chandra and XMM-Newton to study how the hot gas content in early-type galaxies varies with environment. We find that the L{sub X}-L{sub K} relationship is steeper for field galaxies than for comparable galaxies in groups and clusters. This suggests that internal processes such as supernovae driven winds or AGN feedback may expel hot gas from low mass field galaxies. Such mechanisms are less effective in groups and clusters where the presence of an intragroup or intracluster medium may confine outflowing material.

  15. Hot Spot | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetecGtel Jump to:Pennsylvania: EnergyHopkinsville,WindEnergyOpenHotPot,Hot

  16. Water-heating dehumidifier

    DOE Patents [OSTI]

    Tomlinson, John J. (Knoxville, TN)

    2006-04-18T23:59:59.000Z

    A water-heating dehumidifier includes a refrigerant loop including a compressor, at least one condenser, an expansion device and an evaporator including an evaporator fan. The condenser includes a water inlet and a water outlet for flowing water therethrough or proximate thereto, or is affixed to the tank or immersed into the tank to effect water heating without flowing water. The immersed condenser design includes a self-insulated capillary tube expansion device for simplicity and high efficiency. In a water heating mode air is drawn by the evaporator fan across the evaporator to produce cooled and dehumidified air and heat taken from the air is absorbed by the refrigerant at the evaporator and is pumped to the condenser, where water is heated. When the tank of water heater is full of hot water or a humidistat set point is reached, the water-heating dehumidifier can switch to run as a dehumidifier.

  17. Impact of Contaminants Present in Coal-Biomass Derived Synthesis Gas on Water-gas Shift and Fischer-Tropsch Synthesis Catalysts

    SciTech Connect (OSTI)

    Gokhan Alptekin

    2012-09-30T23:59:59.000Z

    Co-gasification of biomass and coal in large-scale, Integrated Gasification Combined Cycle (IGCC) plants increases the efficiency and reduces the environmental impact of making synthesis gas ("syngas") that can be used in Coal-Biomass-to-Liquids (CBTL) processes for producing transportation fuels. However, the water-gas shift (WGS) and Fischer-Tropsch synthesis (FTS) catalysts used in these processes may be poisoned by multiple contaminants found in coal-biomass derived syngas; sulfur species, trace toxic metals, halides, nitrogen species, the vapors of alkali metals and their salts (e.g., KCl and NaCl), ammonia, and phosphorous. Thus, it is essential to develop a fundamental understanding of poisoning/inhibition mechanisms before investing in the development of any costly mitigation technologies. We therefore investigated the impact of potential contaminants (H{sub 2}S, NH{sub 3}, HCN, AsH{sub 3}, PH{sub 3}, HCl, NaCl, KCl, AS{sub 3}, NH{sub 4}NO{sub 3}, NH{sub 4}OH, KNO{sub 3}, HBr, HF, and HNO{sub 3}) on the performance and lifetime of commercially available and generic (prepared in-house) WGS and FT catalysts; ferrochrome-based high-temperature WGS catalyst (HT-WGS, Shiftmax 120‚?Ę, S√ľd-Chemie), low-temperature Cu/ZnO-based WGS catalyst (LT-WGS, Shiftmax 230‚?Ę, S√ľd-Chemie), and iron- and cobalt-based Fischer-Trospch synthesis catalysts (Fe-FT & Co-FT, UK-CAER). In this project, TDA Research, Inc. collaborated with a team at the University of Kentucky Center for Applied Energy Research (UK-CAER) led by Dr. Burt Davis. We first conducted a detailed thermodynamic analysis. The three primary mechanisms whereby the contaminants may deactivate the catalyst are condensation, deposition, and reaction. AsH{sub 3}, PH{sub 3}, H{sub 2}S, HCl, NH{sub 3} and HCN were found to have a major impact on the Fe-FT catalyst by producing reaction products, while NaCl, KCl and PH{sub 3} produce trace amounts of deposition products. The impact of the contaminants on the activity, selectivity, and deactivation rates (lifetime) of the catalysts was determined in bench-scale tests. Most of the contaminants appeared to adsorb onto (or react with) the HT- and LT-WGS catalysts were they were co-fed with the syngas: Ô?∑ 4.5 ppmv AsH{sub 3} or 1 ppmv PH{sub 3} in the syngas impacted the selectivity and CO conversion of both catalysts; Ô?∑ H{sub 2}S slowly degraded both WGS catalysts; - A binary mixture of H{sub 2}S (60 ppmv) and NH{sub 3} (38 ppmv) impacted the activity of the LT-WGS catalyst, but not the HT-WGS catalyst Ô?∑ Moderate levels of NH{sub 3} (100 ppmv) or HCN (10 ppmv) had no impact Ô?∑ NaCl or KCl had essentially no effect on the HT-WGS catalyst, but the activity of the LT-WGS catalyst decreased very slowly Long-term experiments on the Co-FT catalyst at 260 and 270 ¬įC showed that all of the contaminants impacted it to some extent with the exception of NaCl and HF. Irrespective of its source (e.g., NH{sub 3}, KNO{sub 3}, or HNO{sub 3}), ammonia suppressed the activity of the Co-FT catalyst to a moderate degree. There was essentially no impact the Fe-FT catalyst when up to 100 ppmw halide compounds (NaCl and KCl), or up to 40 ppmw alkali bicarbonates (NaHCO{sub 3} and KHCO{sub 3}). After testing, BET analysis showed that the surface areas, and pore volumes and diameters of both WGS catalysts decreased during both single and binary H2S and NH3 tests, which was attributed to sintering and pore filling by the impurities. The HT-WGS catalyst was evaluated with XRD after testing in syngas that contained 1 ppmv PH{sub 3}, or 2 ppmv H{sub 2}S, or both H{sub 2}S (60 ppmv) and NH{sub 3} (38 ppmv). The peaks became sharper during testing, which was indicative of crystal growth and sintering, but no new phases were detected. After LT-WGS tests (3-33 ppmv NH{sub 3} and/or 0-88 ppmv H{sub 2}S) there were a few new phases that appeared, including sulfides. The fresh Fe-FT catalyst was nanocrystalline and amorphous. ICP-AA spectroscopy and other methods (e.g., chromatography) were used to analyze for

  18. How to Make Appliance Standards Work: Improving Energy and Water Efficiency Test Procedures

    E-Print Network [OSTI]

    Lutz, Jim

    2012-01-01T23:59:59.000Z

    efficiency of commercial water heaters and hot water supplyheat pump water heaters). http://edocket.access.gpo.gov/2004/CSA 4.3- 2004 Gas Water Heaters - Volume III, Storage

  19. Impacts of Water Quality on Residential Water Heating Equipment

    SciTech Connect (OSTI)

    Widder, Sarah H.; Baechler, Michael C.

    2013-11-01T23:59:59.000Z

    Water heating is a ubiquitous energy use in all residential housing, accounting for 17.7% of residential energy use (EIA 2012). Today, there are many efficient water heating options available for every fuel type, from electric and gas to more unconventional fuel types like propane, solar, and fuel oil. Which water heating option is the best choice for a given household will depend on a number of factors, including average daily hot water use (total gallons per day), hot water draw patterns (close together or spread out), the hot water distribution system (compact or distributed), installation constraints (such as space, electrical service, or venting accommodations) and fuel-type availability and cost. While in general more efficient water heaters are more expensive than conventional water heating technologies, the savings in energy use and, thus, utility bills can recoup the additional upfront investment and make an efficient water heater a good investment over time in most situations, although the specific payback period for a given installation will vary widely. However, the expected lifetime of a water heater in a given installation can dramatically influence the cost effectiveness and savings potential of a water heater and should be considered, along with water use characteristics, fuel availability and cost, and specific home characteristics when selecting the optimum water heating equipment for a particular installation. This report provides recommendations for selecting and maintaining water heating equipment based on local water quality characteristics.

  20. apoplastic water flow: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    district heating system Texas A&M University - TxSpace Summary: -rise building hot water heating system. Energy for sustainable development, the journal of the international...

  1. Durable zinc ferrite sorbent pellets for hot coal gas desulfurization

    DOE Patents [OSTI]

    Jha, Mahesh C. (Arvada, CO); Blandon, Antonio E. (Thornton, CO); Hepworth, Malcolm T. (Edina, MN)

    1988-01-01T23:59:59.000Z

    Durable, porous sulfur sorbents useful in removing hydrogen sulfide from hot coal gas are prepared by water pelletizing a mixture of fine zinc oxide and fine iron oxide with inorganic and organic binders and small amounts of activators such as sodium carbonate and molybdenite; the pellets are dried and then indurated at a high temperature, e.g., 1800.degree. C., for a time sufficient to produce crush-resistant pellets.

  2. Is My Water Safe? disaster may disrupt the electricity needed to pump

    E-Print Network [OSTI]

    . Emergency water Your hot water heater or water pressure tank could supply many gallons of safe water during the water heater on again until the water system is back in service. Water from the toilet tank may be used an emergency. Before using water from the water heater, switch off the gas or elec- tricity that heats

  3. Statistical mechanics of hot dense matter

    SciTech Connect (OSTI)

    More, R.

    1986-10-01T23:59:59.000Z

    Research on properties of hot dense matter produced with high intensity laser radiation is described in a brief informal review.

  4. Partitioning of bacterial communities between travertine depositional facies at Mammoth Hot

    E-Print Network [OSTI]

    Fouke, Bruce W.

    flow of spring water from the high-temperature to low-temperature facies. These results suggest of depositional facies models that correlate (1) the depth, velocity, temperature, and chemistry of waterPartitioning of bacterial communities between travertine depositional facies at Mammoth Hot Springs

  5. 2000 Astronomy Department, University of Texas at Austin Full Of Hot Air?

    E-Print Network [OSTI]

    Hemenway, Mary Kay

    ©2000 Astronomy Department, University of Texas at Austin Full Of Hot Air? Introduction Light has standing by a pool, the medium is air. If you are looking at the Moon from under water after you jump into the pool, the mediums are both air and water. The Moon would appear dif- ferent from underwater because

  6. Hot tearing test for TIG welding of aluminum alloys: application of a stress parallel to the

    E-Print Network [OSTI]

    Paris-Sud XI, Universitť de

    Page 1 Hot tearing test for TIG welding of aluminum alloys: application of a stress parallel or solidification cracking, in aluminum alloys welding is an important industrial issue and must be carefully the parameters leading to hot tearing during welding. The originality of the test presented here

  7. Hot tearing test for TIG welding of aluminum alloys: application of a stress parallel to the

    E-Print Network [OSTI]

    Paris-Sud XI, Universitť de

    Page 1 Hot tearing test for TIG welding of aluminum alloys: application of a stress parallel in aluminum alloys welding is an important industrial issue. Understanding of hot cracking phenomenon welding. The originality of the test presented here is that an external stress is applied on the test

  8. Critical Plane Analysis of Wall Assembly in a Hot, Humid Climate

    E-Print Network [OSTI]

    Turner, S. C.

    2000-01-01T23:59:59.000Z

    or examples are available. This paper presents this detail for a typical light commercial wall assembly, and provides the basis for analysis of any envelope assembly in hot and humid climates. Analysis of an envelope assembly in hot and humid climates seeks...

  9. Increased Hot-Plate Ignition Probability for Nanoparticle-Laden Diesel Fuel

    E-Print Network [OSTI]

    Pacheco, Jose Rafael

    Increased Hot-Plate Ignition Probability for Nanoparticle-Laden Diesel Fuel Himanshu Tyagi, Patrick April 2, 2008 ABSTRACT The present study attempts to improve the ignition properties of diesel fuel, droplet ignition experiments were carried out atop a heated hot plate. Different types of fuel mixtures

  10. Wind information derived from hot air

    E-Print Network [OSTI]

    Haak, Hein

    Wind information derived from hot air balloon flights for use in short term wind forecasts E Introduction/Motivation Hot air balloons as wind measuring device Setup of nested HIRLAM models Results ∑ Three, The Nertherlands #12;Hot air balloon ∑Displacement/time unit = wind speed ∑Vertical resolution 30m ∑Inertia (500 kg

  11. Fukushima Light Water Detritiation System Presentation

    Office of Environmental Management (EM)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently Asked Questions for DOE FY 2011Talley, Carrie To:EnergyDepartment&Fuels

  12. Water Heating Standing Technical Committee Presentation

    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 DataDepartment of Energy Your DensityEnergy U.S.-China Electric Vehicle and03/02ReportWaste-to-Energy and FuelDepartment ofAgency

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

    Broader source: Energy.gov [DOE]

    DOE Geothermal Peer Review 2010 - Presentation. Project objective: Integration of new thermochronometric, structural and geological analyses, reflection and refraction seismic surveys and existing geophysical data into a 3-D Earth Model to elucidate the tectonic and 4-D thermal evolution of southern Clayton Valley and the Weepah Hills (Pearl Hot Spring geothermal play).

  14. Geothermal heating from Pinkerton Hot Springs at Colorado Timberline Academy, Durango, Colorado. Final technical report

    SciTech Connect (OSTI)

    Allen, C.C.; Allen, R.W.; Beldock, J.

    1981-11-08T23:59:59.000Z

    The efforts to establish a greater pool of knowledge in the field of low temperature heat transfer for the application of geothermal spring waters to space heating are described. A comprehensive set of heat loss experiments involving passive radiant heating panels is conducted and the results presented in an easily interpretable form. Among the conclusions are the facts that heating a 65 to 70 F/sup 0/ space with 90 to 100 F/sup 0/ liquids is a practical aim. The results are compared with the much lower rates published in the American Society of Heating Refrigeration and Air Conditioning Engineers SYSTEMS, 1976. A heat exchange chamber consisting of a 1000 gallon three compartment, insulated and buried tank is constructed and a control and pumping building erected over the tank. The tank is intended to handle the flow of geothermal waters from Pinkerton Hot Springs at 50 GPM prior to the wasting of the spring water at a disposal location. Approximately 375,000 Btu per hour should be available for heating assuming a 15 F/sup 0/ drop in water temperature. A combination of the panel heat loss experiments, construction of the heat exchange devices and ongoing collection of heat loss numbers adds to the knowledge available to engineers in sizing low temperature heat systems, useful in both solar and geothermal applications where source temperature may be often below 110 F/sup 0/.

  15. Analysis of calibrated hot box data for three concrete walls

    SciTech Connect (OSTI)

    Childs, K.W.

    1985-09-01T23:59:59.000Z

    Three walls constructed of concrete with different densities were tested in a calibrated hot box at the Construction Technology Laboratories of the Portland Cement Association. The observed dynamic performance of these walls was not in good agreement with analytical solutions based on the assumption of linear heat conduction through the walls. Several sources of potential errors in the data from the hot box were explored. While some of these errors do appear to be real, they do not fully explain the discrepancy between experimental and analytical results. The experimentally determined values of the specific heats for the three concrete walls were identified as the most likely cause for the discrepancies. This report presents the analysis of the data from the hot box experiments and suggestions for future investigation.

  16. Emergency Factsheet for Disinfecting Water Wells by Shock Chlorination

    E-Print Network [OSTI]

    an alternate water source during the treatment period. Most water treatment equipment (such as water heaters, release the air to allow the tank to be filled with chlorinated water. Drain all hot water heatersEmergency Factsheet for Disinfecting Water Wells by Shock Chlorination Mark L. McFarland, Associate

  17. UBC Social Ecological Economic Development Studies (SEEDS) Student Report Drain Water Heat Recovery

    E-Print Network [OSTI]

    household, the NPV of DWHR is -$203.68 for homes with electric water heaters and -$464.88 for homes with natural gas water heaters. DWHR is much more economical for households with electric hot water heaters as their energy costs are much higher. A household of 4 or more people with an electric hot water heater would

  18. Hot Dry Rock energy annual report fiscal year 1992

    SciTech Connect (OSTI)

    Winchester, W.W. [ed.; Duchane, D.V.

    1993-04-01T23:59:59.000Z

    Hot Dry Rock technology took a giant leap forward this year as the long-awaited long-term flow test (LTFT) of the Phase 2 HDR reservoir at Fenton Hill got underway. Energy was produced on a twenty-four hour a day basis for a continuous period of nearly four months of steady-state testing. Hot water was brought to the surface at 90--100 gallons per minute (gpm) with temperatures of 180{degrees}C (356{degrees}F) and higher. During that time, the HDR plant achieved an on-line record of 98.8%. Surface temperature measurements and temperature logging deep within the wellbore confirmed that no decline in the average temperature of fluid produced from the reservoir occurred. Tracer experiments indicated that flow paths within the reservoir were undergoing continuous change during the test. Remarkably, it appeared that longer flow paths carried a larger proportion of the flow as the test proceeded, while more direct fluid pathways disappeared or carried a significantly reduced flow. In sum, access to hot rock appeared to improve over the span of the test. Water losses during the test averaged 10--12% and showed a slow long-term decline. These results confirmed what had been previously discovered in static pressurization testing: Water consumption declines significantly during extended operation of an HDR reservoir. In combination with a recent demonstration by the Japanese that water losses can be greatly reduced by the proper placement of multiple production wells, the recent results at Fenton Hill have effectively demonstrated that excessive water consumption should not be an issue for a properly engineered HDR facility at a well chosen site.

  19. Hot Dry Rock energy annual report fiscal year 1992

    SciTech Connect (OSTI)

    Duchane, D.V.; Winchester, W.W.

    1993-04-01T23:59:59.000Z

    Hot Dry Rock technology took a giant leap forward this year as the long-awaited long-term flow test (LTFT) of the Phase II HDR reservoir at Fenton Hill got underway. Energy was produced on a twenty-four hour a day basis for a continuous period of nearly four months of steady-state testing. Hot water was brought to the surface at 90-100 gallons per minute (gpm) with temperatures of 180[degrees]C (356[degrees]F) and higher. During that time, the HDR plant achieved an on-line record of 98.8%. Surface temperature measurements and temperature logging deep within the wellbore confirmed that no decline in the average temperature of fluid produced from the reservoir occurred. Tracer experiments indicated that flow paths within the reservoir were undergoing continuous change during the test. Remarkably, it appeared that longer flow paths carried a larger proportion of the flow as the test proceeded, while more direct fluid pathways disappeared or carried a significantly reduced flow. In sum, access to hot rock appeared to improve over the span of the test. Water losses during the test averaged 10-12% and showed a slow long-term decline. These results confirmed what had been previously discovered in static pressurization testing: Water consumption declines significantly during extended operation of an HDR reservoir. In combination with a recent demonstration by the Japanese that water losses can be greatly reduced by the proper placement of multiple production wells, the recent results at Fenton Hill have effectively demonstrated that excessive water consumption should not be an issue for a properly engineered HDR facility at a well chosen site.

  20. A THREE-PHASE CHEMICAL MODEL OF HOT CORES: THE FORMATION OF GLYCINE

    SciTech Connect (OSTI)

    Garrod, Robin T., E-mail: rgarrod@astro.cornell.edu [Center for Radiophysics and Space Research, Cornell University, Ithaca, NY 14853-6801 (United States)

    2013-03-01T23:59:59.000Z

    A new chemical model is presented that simulates fully coupled gas-phase, grain-surface, and bulk-ice chemistry in hot cores. Glycine (NH{sub 2}CH{sub 2}COOH), the simplest amino acid, and related molecules such as glycinal, propionic acid, and propanal, are included in the chemical network. Glycine is found to form in moderate abundance within and upon dust-grain ices via three radical-addition mechanisms, with no single mechanism strongly dominant. Glycine production in the ice occurs over temperatures {approx}40-120 K. Peak gas-phase glycine fractional abundances lie in the range 8 Multiplication-Sign 10{sup -11}-8 Multiplication-Sign 10{sup -9}, occurring at {approx}200 K, the evaporation temperature of glycine. A gas-phase mechanism for glycine production is tested and found insignificant, even under optimal conditions. A new spectroscopic radiative-transfer model is used, allowing the translation and comparison of the chemical-model results with observations of specific sources. Comparison with the nearby hot-core source NGC 6334 IRS1 shows excellent agreement with integrated line intensities of observed species, including methyl formate. The results for glycine are consistent with the current lack of a detection of this molecule toward other sources; the high evaporation temperature of glycine renders the emission region extremely compact. Glycine detection with ALMA is predicted to be highly plausible, for bright, nearby sources with narrow emission lines. Photodissociation of water and subsequent hydrogen abstraction from organic molecules by OH, and NH{sub 2}, are crucial to the buildup of complex organic species in the ice. The inclusion of alternative branches within the network of radical-addition reactions appears important to the abundances of hot-core molecules; less favorable branching ratios may remedy the anomalously high abundance of glycolaldehyde predicted by this and previous models.

  1. Efficient Multifamily Homes in a Hot-Humid Climate by Atlantic Housing Partners

    SciTech Connect (OSTI)

    Chasar, D.; Martin, E.

    2013-04-01T23:59:59.000Z

    With assistance from the Florida Solar Energy Center (FSEC) and its Building America Partnership for Improved Residential Construction (BA-PIRC), Atlantic Housing Partners (AHP) has implemented a high performance, systems engineered package of measures. This report demonstrates how the initiative achieves Building America (BA) goals of 30%-50% energy savings. Specifically, the goals are documented as being achieved in the new construction multifamily housing sector in the hot humid climate. Results from energy modeling of the high performance package are presented. The role of utility allowance calculations, used as part of the low-income housing tax credit process, to value those energy savings is discussed, as is customer satisfaction with heat pump water heaters.

  2. Energy and Economic Impacts of U.S. Federal Energy and Water Conservation Standards Adopted From 1987 Through 2011

    E-Print Network [OSTI]

    Meyers, Stephen

    2013-01-01T23:59:59.000Z

    and Heat Pumps NAECA 1987 Water Heaters NAECA 1987 FurnacesPumps EPACT 1992 Water Heaters, Hot Water Supply Boilers andand heat pumps, and water heaters We modified the analytical

  3. Assessment of hot gas contaminant control

    SciTech Connect (OSTI)

    Rutkowski, M.D.; Klett, M.G.; Zaharchuk, R.

    1996-12-31T23:59:59.000Z

    The objective of this work is to gather data and information to assist DOE in responding to the NRC recommendation on hot gas cleanup by performing a comprehensive assessment of hot gas cleanup systems for advanced coal-based Integrated Gasification Combined Cycle (IGCC) and Pressurized Fluidized Bed Combustion (PFBC) including the status of development of the components of the hot gas cleanup systems, and the probable cost and performance impacts. The scope and time frame of information gathering is generally responsive to the boundaries set by the National Research council (NRC), but includes a broad range of interests and programs which cover hot gas cleanup through the year 2010. As the status of hot gas cleanup is continually changing, additional current data and information are being obtained for this effort from this 1996 METC Contractors` Review Meeting as well as from the 1996 Pittsburgh Coal Conference, and the University of Karlsruhe Symposium. The technical approach to completing this work consists of: (1) Determination of the status of hot gas cleanup technologies-- particulate collection systems, hot gas desulfurization systems, and trace contaminant removal systems; (2) Determination of hot gas cleanup systems cost and performance sensitivities. Analysis of conceptual IGCC and PFBC plant designs with hot gas cleanup have been performed. The impact of variations in hot gas cleanup technologies on cost and performance was evaluated using parametric analysis of the baseline plant designs and performance sensitivity.

  4. Solar space and water heating system installed at Charlottesville, Virginia

    SciTech Connect (OSTI)

    Greer, Charles R.

    1980-09-01T23:59:59.000Z

    The solar energy system located at David C. Wilson Neuropsychiatric Hospital, Charlottesville, Virginia, consists of 88 single glazed, Sunworks Solector copper base plate collector modules; hot water coils in the hot air ducts; a domestic hot water (DHW) preheat tank; a 3,000 gallon concrete urethane-insulated storage tank and other miscellaneous components. This report includes extracts from the site files, specifications, drawings, installation, operation and maintenance instructions.

  5. Exergy and Energy analysis of a ground-source heat pump for domestic water heating under simulated occupancy conditions

    SciTech Connect (OSTI)

    Ally, Moonis Raza [ORNL; Munk, Jeffrey D [ORNL; Baxter, Van D [ORNL; Gehl, Anthony C [ORNL

    2012-01-01T23:59:59.000Z

    This paper presents detailed analysis of a water to water ground source heat pump (WW-GSHP) to provide all the hot water needs in a 345 m2 house located in DOE climate zone 4 (mixed-humid). The protocol for hot water use is based on the Building America Research Benchmark Definition (Hendron 2008; Hendron and Engebrecht 2010) which aims to capture the living habits of the average American household and its impact on energy consumption. The entire house was operated under simulated occupancy conditions. Detailed energy and exergy analysis provides a complete set of information on system efficiency and sources of irreversibility, the main cause of wasted energy. The WW-GSHP was sized at 5.275 kW (1.5-ton) for this house and supplied hot water to a 303 L (80 gal) water storage tank. The WW-GSHP shared the same ground loop with a 7.56 kW (2.1-ton) water to air ground source heat pump (WA-GSHP) which provided space conditioning needs to the entire house. Data, analyses, and measures of performance for the WW-GSHP in this paper complements the results of the WA-GSHP published in this journal (Ally, Munk et al. 2012). Understanding the performance of GSHPs is vital if the ground is to be used as a viable renewable energy resource.

  6. Nuclear stopping power in warm and hot dense matter

    SciTech Connect (OSTI)

    Faussurier, Gerald; Blancard, Christophe [CEA, DAM, DIF, F-91 297 Arpajon (France); Gauthier, Maxence [CEA, DAM, DIF, F-91 297 Arpajon (France); LULI, Ecole Polytechnique, CNRS, CEA, UPMC, Route de Saclay, 91128 Palaiseau (France)

    2013-01-15T23:59:59.000Z

    We present a method to estimate the nuclear component of the stopping power of ions propagating in dense matter. Three kinds of effective pair potentials are proposed. Results from the warm dense matter regime and the domain of high energy density physics are presented and discussed for proton and helium. The role of ionic temperature is examined. The nuclear stopping power can play a noticeable role in hot dense matter.

  7. Arsenic in your water?: Economists study perceptions of risks from drinking water high in arsenic

    E-Print Network [OSTI]

    Wythe, Kathy

    2010-01-01T23:59:59.000Z

    Arsenic in water?your tx H2O | pg. 27 Story by Kathy Wythe Economists study perceptions of risks from drinking water high in arsenic In several ?hot spots? across the United States people may be drinking water with high levels of naturally... occurring arsenic without understanding the associated risks, according to agricultural economists. ?Many households in arsenic ?hot spots? are in fact being exposed to harmful doses of arsenic,? said Dr. Douglass Shaw, professor of agricultural...

  8. Discovery of magnetic fields in hot subdwarfs

    E-Print Network [OSTI]

    S. J. O'Toole; S. Jordan; S. Friedrich; U. Heber

    2004-10-02T23:59:59.000Z

    We present initial results of a project to measure mean longitudinal magnetic fields in a group of sdB/OB/O stars. The project was inspired by the discovery of three super-metal-rich sdOB stars, each having metals (e.g. Ti, V) enhanced by factors of 10^3 to 10^5. Similar behaviour is observed in chemically peculiar A stars, where strong magnetic fields are responsible for the enrichment. With this in mind, we obtained circularly polarised spectra of two of the super-metal-rich sdOBs, two "normal" sdBs and two sdOs using FORS1 on the ESO/VLT. By examining circular polarisation in the hydrogen Balmer lines and in helium lines, we have detected magnetic fields with strengths of 1-2 kG in most of our targets. This suggests that such fields are relatively common in hot subdwarfs.

  9. Building America Webinar: Central Multifamily Water Heating Systems

    Broader source: Energy.gov [DOE]

    Hosted by DOE's Building America program, this webinar will focus on the effective use of central heat pump water heaters (HPWHs) and control systems to reduce the energy use in hot water distribution.

  10. Building America Webinar: Central Multifamily Water Heating Systems...

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

    to 4:30PM EST This free webinar will focus on the effective use of central heat pump water heaters (HPWHs) and control systems to reduce the energy use in hot water...

  11. Image Storage in Hot Vapors

    E-Print Network [OSTI]

    L. Zhao; T. Wang; Y. Xiao; S. F. Yelin

    2007-10-22T23:59:59.000Z

    We theoretically investigate image propagation and storage in hot atomic vapor. A $4f$ system is adopted for imaging and an atomic vapor cell is placed over the transform plane. The Fraunhofer diffraction pattern of an object in the object plane can thus be transformed into atomic Raman coherence according to the idea of ``light storage''. We investigate how the stored diffraction pattern evolves under diffusion. Our result indicates, under appropriate conditions, that an image can be reconstructed with high fidelity. The main reason for this procedure to work is the fact that diffusion of opposite-phase components of the diffraction pattern interfere destructively.

  12. Axion hot dark matter bounds

    E-Print Network [OSTI]

    G. Raffelt; S. Hannestad; A. Mirizzi; Y. Y. Y. Wong

    2008-08-06T23:59:59.000Z

    We derive cosmological limits on two-component hot dark matter consisting of neutrinos and axions. We restrict the large-scale structure data to the safely linear regime, excluding the Lyman-alpha forest. We derive Bayesian credible regions in the two-parameter space consisting of m_a and sum(m_nu). Marginalizing over sum(m_nu) provides m_aaxions the same data and methods give sum(m_nu)< 0.63 eV (95% CL).

  13. ADVANCED HOT GAS FILTER DEVELOPMENT

    SciTech Connect (OSTI)

    Matthew R. June; John L. Hurley; Mark W. Johnson

    1999-04-01T23:59:59.000Z

    Iron aluminide hot gas filters have been developed using powder metallurgy techniques to form seamless cylinders. Three alloys were short-term corrosion tested in simulated IGCC atmospheres with temperatures between 925 F and 1200 F with hydrogen sulfide concentrations ranging from 783 ppm{sub v} to 78,300 ppm{sub v}. Long-term testing was conducted for 1500 hours at 925 F with 78,300 ppm{sub v}. The FAS and FAL alloys were found to be corrosion resistant in the simulated environments. The FAS alloy has been commercialized.

  14. 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, search OpenEIHesperia, California:Project Jump to: navigation, searchHotPage Edit

  15. Idaho_LavaHotSprings

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School footballHydrogenIT |Hot Springs Site #0104 Latitude: N. Lava

  16. An Analysis of Building Envelope Upgrades for Residential Energy Efficiency in Hot and Humid Climates

    E-Print Network [OSTI]

    Malhotra, M.; Haberl, J.

    This paper presents the results of the analyses of various envelope upgrades for residential energyefficiency in hot and humid climates. The building components considered for the upgrades include: building shape, construction type, roof...

  17. KOI 1224: A FOURTH BLOATED HOT WHITE DWARF COMPANION FOUND WITH KEPLER

    E-Print Network [OSTI]

    Breton, R. P.

    We present an analysis and interpretation of the Kepler binary system KOI 1224. This is the fourth binary found with Kepler that consists of a thermally bloated, hot white dwarf in a close orbit with a more or less normal ...

  18. An Analysis of Building Envelope Upgrades for Residential Energy Efficiency in Hot and Humid Climates†

    E-Print Network [OSTI]

    Malhotra, M.; Haberl, J.

    2006-01-01T23:59:59.000Z

    This paper presents the results of the analyses of various envelope upgrades for residential energyefficiency in hot and humid climates. The building components considered for the upgrades include: building shape, construction ...

  19. All-optical measurement of the hot electron sheath driving laser ion acceleration from thin foils

    E-Print Network [OSTI]

    Jackel, O.

    We present experimental results from an all-optical diagnostic method to directly measure the evolution of the hot-electron distribution driving the acceleration of ions from thin foils using high-intensity lasers. Central ...

  20. PowerPoint Presentation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    in receiving bodies of water. Storm Water and the Issues at Hand 1. Downspout 3. Storm drain 5. Untreated storm water discharge 2. Untreated runoff 4. Sewer system 6. Urban stream...

  1. Covered Product Category: Hot Food Holding Cabinets

    Broader source: Energy.gov [DOE]

    The Federal Energy Management Program (FEMP) provides acquisition guidance for hot food holding cabinets, which are covered by the ENERGY STAR program.

  2. Detachment Faulting & Geothermal Resources - Pearl Hot Spring...

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

    Faulting & Geothermal Resources - Pearl Hot Spring, NV Conducting a 3D Converted Shear Wave Project to Reduce Exploration Risk at Wister, CA Crump Geyser: High Precision...

  3. air-water countercurrent flow: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    HOT WATER & POOL REQUIREMENTS CEC-MECH-2C (Revised 0809) CALIFORNIA ENERGY COMMISSION WATER SIDE SYSTEM REQUIREMENTS (Part 2 38 AIR-WATER GAS EXCHANGE: MECHANISMS GOVERNING THE...

  4. Lakeland Electric- Solar Water Heating Program

    Broader source: Energy.gov [DOE]

    Lakeland Electric, a municipal utility in Florida, is the nation's first utility to offer solar-heated domestic hot water on a "pay-for-energy" basis. The utility has contracted with a solar...

  5. The US Hot Dry Rock project

    SciTech Connect (OSTI)

    Hendron, R.H.

    1987-01-01T23:59:59.000Z

    The Hot Dry Rock geothermal energy project began in the early 1970's with the objective of developing a technology to make economically available the large ubiquitous thermal energy of the upper earth crust. The program has been funded by the Department of Energy (and its predecessors) and for a few years with participation by West Germany and Japan. An energy reservoir was accessed by drilling and hydraulically fracturing in the precambrian basement rock outside the Valles Caldera of north-central New Mexico. Water was circulated through the reservoir (Phase I, 1978-1980) producing up to 5 MWt at 132/sup 0/C. A second (Phase II) reservoir has been established with a deeper pair of holes and an initial flow test completed producing about 10 MWt at 190/sup 0/C. These accomplishments have been supported and paralleled by developments in drilling, well completion and instrumentation hardware. Acoustic or microseismic fracture mapping and geochemistry studies in addition to hydraulic and thermal data contribute to reservoir analyses. Studies of some of the estimated 430,000 quads of HDR resources in the United States have been made with special attention focused on sites most advantageous for early development.

  6. Hot electron production and heating by hot electrons in fast ignitor research

    SciTech Connect (OSTI)

    Key, M.H.; Estabrook, K.; Hammel, B. [and others

    1997-12-01T23:59:59.000Z

    In an experimental study of the physics of fast ignition the characteristics of the hot electron source at laser intensities up to 10(to the 20th power) Wcm{sup -2} and the heating produced at depth by hot electrons have been measured. Efficient generation of hot electrons but less than the anticipated heating have been observed.

  7. GEOL 5303 Project Presentations Presenter name: ______________________________________________

    E-Print Network [OSTI]

    Smith-Konter, Bridget

    pertinent materials. 10 7 4 0 Conclusion: What did you learn? Presenter summarizes total project (triumphsGEOL 5303 Project Presentations Presenter name: ______________________________________________ Project title: ___________________________________________________________ Project content Superb

  8. ADVANCED HOT GAS FILTER DEVELOPMENT

    SciTech Connect (OSTI)

    E.S. Connolly; G.D. Forsythe

    2000-09-30T23:59:59.000Z

    DuPont Lanxide Composites, Inc. undertook a sixty-month program, under DOE Contract DEAC21-94MC31214, in order to develop hot gas candle filters from a patented material technology know as PRD-66. The goal of this program was to extend the development of this material as a filter element and fully assess the capability of this technology to meet the needs of Pressurized Fluidized Bed Combustion (PFBC) and Integrated Gasification Combined Cycle (IGCC) power generation systems at commercial scale. The principal objective of Task 3 was to build on the initial PRD-66 filter development, optimize its structure, and evaluate basic material properties relevant to the hot gas filter application. Initially, this consisted of an evaluation of an advanced filament-wound core structure that had been designed to produce an effective bulk filter underneath the barrier filter formed by the outer membrane. The basic material properties to be evaluated (as established by the DOE/METC materials working group) would include mechanical, thermal, and fracture toughness parameters for both new and used material, for the purpose of building a material database consistent with what is being done for the alternative candle filter systems. Task 3 was later expanded to include analysis of PRD-66 candle filters, which had been exposed to actual PFBC conditions, development of an improved membrane, and installation of equipment necessary for the processing of a modified composition. Task 4 would address essential technical issues involving the scale-up of PRD-66 candle filter manufacturing from prototype production to commercial scale manufacturing. The focus would be on capacity (as it affects the ability to deliver commercial order quantities), process specification (as it affects yields, quality, and costs), and manufacturing systems (e.g. QA/QC, materials handling, parts flow, and cost data acquisition). Any filters fabricated during this task would be used for product qualification tests being conducted by Westinghouse at Foster-Wheeler's Pressurized Circulating Fluidized Bed (PCFBC) test facility in Karhula, Finland. Task 5 was designed to demonstrate the improvements implemented in Task 4 by fabricating fifty 1.5-meter hot gas filters. These filters were to be made available for DOE-sponsored field trials at the Power Systems Development Facility (PSDF), operated by Southern Company Services in Wilsonville, Alabama.

  9. Ceramic hot-gas filter

    DOE Patents [OSTI]

    Connolly, Elizabeth Sokolinski (Wilmington, DE); Forsythe, George Daniel (Landenberg, PA); Domanski, Daniel Matthew (New Castle, DE); Chambers, Jeffrey Allen (Hockessin, DE); Rajendran, Govindasamy Paramasivam (Boothwyn, PA)

    1999-01-01T23:59:59.000Z

    A ceramic hot-gas candle filter having a porous support of filament-wound oxide ceramic yarn at least partially surrounded by a porous refractory oxide ceramic matrix, and a membrane layer on at least one surface thereof. The membrane layer may be on the outer surface, the inner surface, or both the outer and inner surface of the porous support. The membrane layer may be formed of an ordered arrangement of circularly wound, continuous filament oxide ceramic yarn, a ceramic filler material which is less permeable than the filament-wound support structure, or some combination of continuous filament and filler material. A particularly effective membrane layer features circularly wound filament with gaps intentionally placed between adjacent windings, and a filler material of ceramic particulates uniformly distributed throughout the gap region. The filter can withstand thermal cycling during backpulse cleaning and is resistant to chemical degradation at high temperatures.

  10. Ceramic hot-gas filter

    DOE Patents [OSTI]

    Connolly, E.S.; Forsythe, G.D.; Domanski, D.M.; Chambers, J.A.; Rajendran, G.P.

    1999-05-11T23:59:59.000Z

    A ceramic hot-gas candle filter is described having a porous support of filament-wound oxide ceramic yarn at least partially surrounded by a porous refractory oxide ceramic matrix, and a membrane layer on at least one surface thereof. The membrane layer may be on the outer surface, the inner surface, or both the outer and inner surface of the porous support. The membrane layer may be formed of an ordered arrangement of circularly wound, continuous filament oxide ceramic yarn, a ceramic filler material which is less permeable than the filament-wound support structure, or some combination of continuous filament and filler material. A particularly effective membrane layer features circularly wound filament with gaps intentionally placed between adjacent windings, and a filler material of ceramic particulates uniformly distributed throughout the gap region. The filter can withstand thermal cycling during back pulse cleaning and is resistant to chemical degradation at high temperatures.

  11. Liquid Water Oceans in Ice Giants

    E-Print Network [OSTI]

    Sloane J. Wiktorowicz; Andrew P. Ingersoll

    2006-09-26T23:59:59.000Z

    Aptly named, ice giants such as Uranus and Neptune contain significant amounts of water. While this water cannot be present near the cloud tops, it must be abundant in the deep interior. We investigate the likelihood of a liquid water ocean existing in the hydrogen-rich region between the cloud tops and deep interior. Starting from an assumed temperature at a given upper tropospheric pressure (the photosphere), we follow a moist adiabat downward. The mixing ratio of water to hydrogen in the gas phase is small in the photosphere and increases with depth. The mixing ratio in the condensed phase is near unity in the photosphere and decreases with depth; this gives two possible outcomes. If at some pressure level the mixing ratio of water in the gas phase is equal to that in the deep interior, then that level is the cloud base. Alternately, if the mixing ratio of water in the condensed phase reaches that in the deep interior, then the surface of a liquid ocean will occur. We find that Neptune is both too warm (photospheric temperature too high) and too dry (mixing ratio of water in the deep interior too low) for liquid oceans to exist at present. To have a liquid ocean, Neptune's deep interior water to gas ratio would have to be higher than current models allow, and the density at 19 kbar would have to be ~ 0.8 g/cm^3. Such a high density is inconsistent with gravitational data obtained during the Voyager flyby. As Neptune cools, the probability of a liquid ocean increases. Extrasolar "hot Neptunes," which presumably migrate inward toward their parent stars, cannot harbor liquid water oceans unless they have lost almost all of the hydrogen and helium from their deep interiors.

  12. Emission of Visible Light by Hot Dense Metals

    E-Print Network [OSTI]

    More, R.M.

    2010-01-01T23:59:59.000Z

    HIFAN 1761 EMISSION OF VISIBLE LIGHT BY HOT DENSE METALS ByDE-AC52-07NA27344. HI FAN Emission of Visible Light by HotABSTRACT We consider the emission of visible light by hot

  13. Safety First Safety Last Safety Always Summer in Minnesota means high humidity and sunny, hot

    E-Print Network [OSTI]

    Minnesota, University of

    Safety First Safety Last Safety Always Summer in Minnesota means high humidity and sunny, hot days. · Heat stroke is life threatening! Symptoms include high body temperature, red and dry skin, rapid before you get thirsty. Adequate fluid intake is the biggest key. Cool (not ice cold) water is the best

  14. Droplet impingement and vapor layer formation on hot hydrophobic surfaces Ji Yong Park1

    E-Print Network [OSTI]

    Cahill, David G.

    diameter) water droplets that bounce from hydrophobic surfaces whose temperature exceeds the boiling point angle. The residence time determined by high-speed imaging is constant at 1 msec over the temperature-speed imaging is approximately independent of the temperature of the hot surface. Measurements of thermal

  15. Chemical markers of possible hot spots on Mars Ah-San Wong and Sushil K. Atreya

    E-Print Network [OSTI]

    Atreya, Sushil

    Chemical markers of possible hot spots on Mars Ah-San Wong and Sushil K. Atreya Department not be ruled out. If outgassing does occur somewhere on Mars, water, carbon dioxide, sulfur species, methane, and to a lesser extent, halogens would be the likely molecules of outgassing, based on terrestrial analogs

  16. Computerized, Transient Hot-Wire Thermal Conductivity (HWTC) Apparatus for Nanofluids

    E-Print Network [OSTI]

    Kostic, Milivoje M.

    Computerized, Transient Hot-Wire Thermal Conductivity (HWTC) Apparatus for Nanofluids M. KOSTIC for thermal conductivity measurements of common fluids and nanofluids has been recently developed, designed nanofluids of 1 % volumetric concentration of 35 nm size copper nanoparticles in ethylene glycol and in water

  17. 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...

  18. Isotopic Analysis- Fluid At Indian Valley Hot Springs Geothermal...

    Open Energy Info (EERE)

    Activity: Isotopic Analysis- Fluid At Indian Valley Hot Springs Geothermal Area (1990) Exploration Activity Details Location Indian Valley Hot Springs Geothermal Area...

  19. Steamboat Villa Hot Springs Spa Space Heating Low Temperature...

    Open Energy Info (EERE)

    Villa Hot Springs Spa Space Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Steamboat Villa Hot Springs Spa Space Heating Low Temperature Geothermal...

  20. Broadwater Athletic Club & Hot Springs Space Heating Low Temperature...

    Open Energy Info (EERE)

    Athletic Club & Hot Springs Space Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Broadwater Athletic Club & Hot Springs Space Heating Low Temperature...

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

    Open Energy Info (EERE)

    Salida Hot Springs (Poncha Spring) Space Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Salida Hot Springs (Poncha Spring) Space Heating Low...

  2. Jackson Hot Springs Lodge Space Heating Low Temperature Geothermal...

    Open Energy Info (EERE)

    Hot Springs Lodge Space Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Jackson Hot Springs Lodge Space Heating Low Temperature Geothermal Facility...

  3. Quenching and Partitioning Process Development to Replace Hot...

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

    and Partitioning Process Development to Replace Hot Stamping of High-Strength Automotive Steel Quenching and Partitioning Process Development to Replace Hot Stamping of...

  4. Hot Water Heating System Operation and Energy Conservation†

    E-Print Network [OSTI]

    Shao, Z.; Chen, H.; Wei, P.

    2006-01-01T23:59:59.000Z

    heating period, and temperature-flow adjustment with frequency control. The study shows the most energy efficient operating method is a variable flow heating system, which should be popularized to the heating field....

  5. TYPICAL HOT WATER DRAW PATTERNS BASED ON FIELD DATA

    E-Print Network [OSTI]

    Lutz, Jim

    2014-01-01T23:59:59.000Z

    Renewable Energy Laboratory Natural Resources Canada GasRenewable Energy Laboratory (NREL) performed with Integrated Building and Construction Solutions (IBACOS) Natural Resources Canada

  6. Mandating Solar Hot Water by California Local Governments: Legal Issues

    E-Print Network [OSTI]

    Hoffman,, Peter C.

    1981-01-01T23:59:59.000Z

    and counties the power to require dedication of solar accessthe power to re- quire dedication of solar easements as a

  7. Mandating Solar Hot Water by California Local Governments: Legal Issues

    E-Print Network [OSTI]

    Hoffman,, Peter C.

    1981-01-01T23:59:59.000Z

    the county building code to require solar energy to be thebuilding code, in accord with the energy element of its general plan, to require solar

  8. CC Retrofits and Optimal Controls for Hot Water Systems†

    E-Print Network [OSTI]

    Wu, L.; Liu, M.; Wang, G.

    2007-01-01T23:59:59.000Z

    and exterior zones. Each AHU has design airflow of 45,000 CFM. The high gas usage is caused by a dual-duct system with CAV boxes, which is an outdated and inefficient technology. Pneumatic controls make the operation and maintenance more difficult and do...

  9. Why Is Nevada in Hot Water? Structural Controls and Tectonic...

    Open Energy Info (EERE)

    to the northwest in west-central Nevada near the southeast margin of the high heat-flow region. The abundant geothermal fields may therefore result from a transfer of...

  10. ENERGY USE AND DOMESTIC HOT WATER CONSUMPTION Final Report

    Office of Scientific and Technical Information (OSTI)

    of oversizing of existing boilers (in study buildings) based on actual DHW and EDR loads. Phase I1 of this project which will investigate these issues with the assistance...

  11. Affordable Solar Hot Water and Power LLC | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlinPapersWindeySanta2004) | OpenInformationAffinity Wind

  12. ENERGY USE AND DOMESTIC HOT WATER CONSUMPTION Final Report

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA :Work withJerseyMarketsWhyPressPolicyPortfolio2 0 1

  13. Predictive Control of Hot Water Heaters - Energy Innovation Portal

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah ProjectPRE-AWARD ACCOUNTING SYSTEMMeso-Scale during Electron

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

    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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTri GlobalJump to: navigation, searchOpen EnergyKauaiMtInformationOpen

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

    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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTri GlobalJump to: navigation, searchOpenInformation Henkle,EnergyOpen

  16. Model Simulating Real Domestic Hot Water Use - Building America Top

    Energy Savers [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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO2:Introduction toManagement of the National 93-4EnergyMissionIllness |BasedInnovation |

  17. Interpretation of Water Sample Analysis, Waunita Hot Spring Project,

    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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOf Kilauea Volcano, Hawaii | Open EnergyIGP JumpInformation

  18. Webinar: ENERGY STAR Hot Water Systems for High Performance Homes |

    Energy Savers [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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2, 2015Visiting Strong, Smart,Department of Energy Webinar: ENERGY STAR

  19. Savings Project: Insulate Hot Water Pipes for Energy Savings | Department

    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 onYouTube YouTube Note: Since the.pdfBreakingMay 2015 <Department ofDepartment| Department ofSavingDepartment ofof

  20. Hot New Advances in Water Heating Technology | Department of Energy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School football Highdefault Sign InData inmaxHorizontal

  1. Sustainable Energy Resources for Consumers (SERC) - Solar Hot Water |

    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 DataDepartment of Energy Your Density Isn'tOriginEducationVideoStrategic SafetyGeothermal/Ground-Source Heat Pumps | Department ofDepartment

  2. Sustainable Energy Resources for Consumers (SERC) - Solar Hot Water |

    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 DataDepartment of Energy Your Density Isn'tOriginEducationVideoStrategic SafetyGeothermal/Ground-Source Heat Pumps | Department

  3. Domestic Hot Water Event Schedule Generator - Energy Innovation Portal

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA : Papers69 Federal Register /NATIONALDoes

  4. PowerPoint Presentation

    Broader source: Energy.gov (indexed) [DOE]

    scope Site-wide - energy, water, renewable Guarantee savings Self perform engineering, project management, safety and QC Subcontract installation and...

  5. On the Thermodynamic Geometry of Hot QCD

    E-Print Network [OSTI]

    Stefano Bellucci; Vinod Chandra; Bhupendra Nath Tiwari

    2010-10-07T23:59:59.000Z

    We study the nature of the covariant thermodynamic geometry arising from the free energy of hot QCD. We systematically analyze the underlying equilibrium thermodynamic configurations of the free energy of 2- and 3-flavor hot QCD with or without including thermal fluctuations in the neighborhood of the QCD transition temperature. We show that there exists a well-defined thermodynamic geometric notion for QCD thermodynamics. The geometry thus obtained has no singularity as an intrinsic Riemannian manifold. We further show that there is a close connection of this geometric approach with the existing studies of correlations and quark number susceptibilities in hot QCD.

  6. On the Thermodynamic Geometry of Hot QCD

    E-Print Network [OSTI]

    Bellucci, Stefano; Tiwari, Bhupendra Nath

    2008-01-01T23:59:59.000Z

    We study the nature of the covariant thermodynamic geometry arising from the free energy of hot QCD. We systematically analyze the underlying equilibrium thermodynamic configurations of the free energy of 2- and 3-flavor hot QCD with or without including thermal fluctuations in the neighborhood of the QCD transition temperature. We show that there exists a well-defined thermodynamic geometric notion for QCD thermodynamics. The geometry thus obtained has no singularity as an intrinsic Riemannian manifold. We further show that there is a close connection of this geometric approach with the existing studies of correlations and quark number susceptibilities in hot QCD.

  7. On the formation of terrestrial planets in hot-Jupiter systems

    E-Print Network [OSTI]

    Martyn J. Fogg; Richard P. Nelson

    2006-10-11T23:59:59.000Z

    We present a series of calculations aimed at examining how an inner system of planetesimals/protoplanets, undergoing terrestrial planet formation, evolves under the influence of a giant planet undergoing inward type II migration through the region bounded between 5 - 0.1 AU. We find that > 60% of the solids disk survives by being scattered by the giant planet into external orbits. Planetesimals are scattered outward almost as efficiently as protoplanets, resulting in the regeneration of a solids disk where dynamical friction is strong and terrestrial planet formation is able to resume. A simulation extended for a few Myr after the migration of the giant planet halted at 0.1 AU, resulted in an apparently stable planet of ~ 2 Earth masses forming in the habitable zone. Migration-induced mixing of volatile-rich material from beyond the `snowline' into the inner disk regions means that terrestrial planets that form there are likely to be water-rich. We predict that hot--Jupiter systems are likely to harbor water-rich terrestrial planets in their habitable zones. These planets may be detected by future planet search missions.

  8. Light Duty Utility Arm System hot test

    SciTech Connect (OSTI)

    Howden, G.F.; Conrad, R.B.; Kiebel, G.R.

    1996-02-01T23:59:59.000Z

    This Engineering Task Plan describes the scope of work and cost for implementing a hot test of the Light Duty Utility Arm System in Tank T-106 in September 1996.

  9. Extracting hot carriers from photoexcited semiconductor nanocrystals

    SciTech Connect (OSTI)

    Zhu, Xiaoyang [Columbia University Department of Chemistry

    2013-09-12T23:59:59.000Z

    During this funding period, we made a significant breakthrough and established for the first time that hot electron transfer from photoexcited NCs to an electron acceptor was indeed possible.

  10. Charm and Beauty in a Hot Environment

    E-Print Network [OSTI]

    Helmut Satz

    2006-02-28T23:59:59.000Z

    We discuss the spectral analysis of quarkonium states in a hot medium of deconfined quarks and gluons, and we show that such an analysis provides a way to determine the thermal properties of the quark-gluon plasma.

  11. Wall Drying in Hot and Humid Climates†

    E-Print Network [OSTI]

    Boone, K.; Weston, T.; Pascual, X.

    2004-01-01T23:59:59.000Z

    Moisture and subsequent mold problems in buildings are a serious and increasing concern for the building industry. Moisture intrusion in buildings is especially pertinent in hot and humid climates because the climate conditions provide only limited...

  12. World launch! Hot-Steam Aerostat

    E-Print Network [OSTI]

    Berlin,Technische Universität

    Info HeiDAS UH World launch! Hot-Steam Aerostat #12;"If you intend to view the land, if you plan Verne: "Fife weeks on a balloon". HeiDAS stands for Hei√?DampfAeroStat (Hot-Steam AeroStat) and it refers to the first operable balloon ever that became buoyant by means of superheated steam. The performance of Hei

  13. Journal of Mammalogy, 83(3):665673, 2002 WATER INFLUX AND FOOD CONSUMPTION OF FREE-LIVING

    E-Print Network [OSTI]

    Williams, Jos. B.

    , Columbus, OH 43210 (JBW) We measured water-influx rate during the hot summer in free-ranging adult Arabian.2% of total water influx. For ungulates living in hot environments, we constructed an allometric curve: log(water influx Desert environments are characterized by high ambient temperature, intense solar ra- diation

  14. Geothermal-resource assessment of the Steamboat-Routt Hot Springs area, Colorado. Resources Series 22

    SciTech Connect (OSTI)

    Pearl, R.H.; Zacharakis, T.G.; Ringrose, C.D.

    1983-01-01T23:59:59.000Z

    An assessment of the Steamboat Springs region in northwest Colorado was initiated and carried out in 1980 and 1981. The goal of this program was to delineate the geological features controlling the occurrence of the thermal waters (temperatures in excess of 68/sup 0/F (20/sup 0/C)) in this area at Steamboat Springs and 8 miles (12.8 km) north at Routt Hot Springs. Thermal waters from Heart Spring, the only developed thermal water source in the study area, are used in the municipal swimming pool in Steamboat Springs. The assessment program was a fully integrated program consisting of: dipole-dipole, Audio-magnetotelluric, telluric, self potential and gravity geophysical surveys, soil mercury and soil helium geochemical surveys; shallow temperature measurements; and prepartion of geological maps. The investigation showed that all the thermal springs appear to be fault controlled. Based on the chemical composition of the thermal waters it appears that Heart Spring in Steamboat Springs is hydrologically related to the Routt Hot Springs. This relationship was further confirmed when it was reported that thermal waters were encountered during the construction of the new high school in Strawberry Park on the north side of Steamboat Springs. In addition, residents stated that Strawberry Park appears to be warmer than the surrounding country side. Geological mapping has determined that a major fault extends from the Routt Hot Springs area into Strawberry Park.

  15. Analysis of Energy, Environmental and Life Cycle Cost Reduction Potential of Ground Source Heat Pump (GSHP) in Hot and Humid Climate

    SciTech Connect (OSTI)

    Yong X. Tao; Yimin Zhu

    2012-04-26T23:59:59.000Z

    It has been widely recognized that the energy saving benefits of GSHP systems are best realized in the northern and central regions where heating needs are dominant or both heating and cooling loads are comparable. For hot and humid climate such as in the states of FL, LA, TX, southern AL, MS, GA, NC and SC, buildings have much larger cooling needs than heating needs. The Hybrid GSHP (HGSHP) systems therefore have been developed and installed in some locations of those states, which use additional heat sinks (such as cooling tower, domestic water heating systems) to reject excess heat. Despite the development of HGSHP the comprehensive analysis of their benefits and barriers for wide application has been limited and often yields non-conclusive results. In general, GSHP/HGSHP systems often have higher initial costs than conventional systems making short-term economics unattractive. Addressing these technical and financial barriers call for additional evaluation of innovative utility programs, incentives and delivery approaches. From scientific and technical point of view, the potential for wide applications of GSHP especially HGSHP in hot and humid climate is significant, especially towards building zero energy homes where the combined energy efficient GSHP and abundant solar energy production in hot climate can be an optimal solution. To address these challenges, this report presents gathering and analyzing data on the costs and benefits of GSHP/HGSHP systems utilized in southern states using a representative sample of building applications. The report outlines the detailed analysis to conclude that the application of GSHP in Florida (and hot and humid climate in general) shows a good potential.

  16. PowerPoint Presentation

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

    1990, 1993, 2001, 2014 NAECA 1987 Room Air Conditioners 1990, 2000, 2014 NAECA 1987 Central Air Conditioners and Heat Pumps 19921993, 2006, 2015 NAECA 1987 Water Heaters...

  17. PowerPoint Presentation

    Energy Savers [EERE]

    Americium-241 (active); Plutonium-238 (former) * Source Material: Depleted Uranium (water-cracking catalyst for tritium recovery) * Other Nuclear Material: Deuterium...

  18. PowerPoint Presentation

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    in SAM Photovoltaics Concentrating PV Solar Water Heating Geothermal Dish-Stirling Linear Fresnel Power Tower Parabolic Trough Small Wind Utility-scale Wind Biomass...

  19. DOPPLER SIGNATURES OF THE ATMOSPHERIC CIRCULATION ON HOT JUPITERS

    SciTech Connect (OSTI)

    Showman, Adam P.; Lewis, Nikole K. [Department of Planetary Sciences and Lunar and Planetary Laboratory, The University of Arizona, 1629 University Boulevard, Tucson, AZ 85721 (United States)] [Department of Planetary Sciences and Lunar and Planetary Laboratory, The University of Arizona, 1629 University Boulevard, Tucson, AZ 85721 (United States); Fortney, Jonathan J. [Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064 (United States)] [Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064 (United States); Shabram, Megan, E-mail: showman@lpl.arizona.edu [Department of Astronomy, University of Florida, 211 Bryant Space Science Center, Gainesville, FL 32611-2055 (United States)] [Department of Astronomy, University of Florida, 211 Bryant Space Science Center, Gainesville, FL 32611-2055 (United States)

    2013-01-01T23:59:59.000Z

    The meteorology of hot Jupiters has been characterized primarily with thermal measurements, but recent observations suggest the possibility of directly detecting the winds by observing the Doppler shift of spectral lines seen during transit. Motivated by these observations, we show how Doppler measurements can place powerful constraints on the meteorology. We show that the atmospheric circulation-and Doppler signature-of hot Jupiters splits into two regimes. Under weak stellar insolation, the day-night thermal forcing generates fast zonal jet streams from the interaction of atmospheric waves with the mean flow. In this regime, air along the terminator (as seen during transit) flows toward Earth in some regions and away from Earth in others, leading to a Doppler signature exhibiting superposed blueshifted and redshifted components. Under intense stellar insolation, however, the strong thermal forcing damps these planetary-scale waves, inhibiting their ability to generate jets. Strong frictional drag likewise damps these waves and inhibits jet formation. As a result, this second regime exhibits a circulation dominated by high-altitude, day-to-night airflow, leading to a predominantly blueshifted Doppler signature during transit. We present state-of-the-art circulation models including non-gray radiative transfer to quantify this regime shift and the resulting Doppler signatures; these models suggest that cool planets like GJ 436b lie in the first regime, HD 189733b is transitional, while planets hotter than HD 209458b lie in the second regime. Moreover, we show how the amplitude of the Doppler shifts constrains the strength of frictional drag in the upper atmospheres of hot Jupiters. If due to winds, the {approx}2 km s{sup -1} blueshift inferred on HD 209458b may require drag time constants as short as 10{sup 4}-10{sup 6} s, possibly the result of Lorentz-force braking on this planet's hot dayside.

  20. ADVANCED HOT GAS FILTER DEVELOPMENT

    SciTech Connect (OSTI)

    RICHARD A. WAGNER

    1998-09-04T23:59:59.000Z

    This report describes the fabrication and testing of continuous fiber ceramic composite (CFCC) based hot gas filters. The fabrication approach utilized a modified filament winding method that combined both continuous and chopped fibers into a novel microstructure. The work was divided into five primary tasks. In the first task, a preliminary set of compositions was fabricated in the form of open end tubes and characterized. The results of this task were used to identify the most promising compositions for sub-scale filter element fabrication and testing. In addition to laboratory measurements of permeability and strength, exposure testing in a coal combustion environment was performed to asses the thermo-chemical stability of the CFCC materials. Four candidate compositions were fabricated into sub-scale filter elements with integral flange and a closed end. Following the 250 hour exposure test in a circulating fluid bed combustor, the retained strength ranged from 70 t 145 percent of the as-fabricated strength. The post-test samples exhibited non-catastrophic failure behavior in contrast to the brittle failure exhibited by monolithic materials. Filter fabrication development continued in a filter improvement and cost reduction task that resulted in an improved fiber architecture, the production of a net shape flange, and an improved low cost bond. These modifications were incorporated into the process and used to fabricate 50 full-sized filter elements for testing in demonstration facilities in Karhula, Finland and at the Power Systems Development Facility (PSDF) in Wilsonville, AL. After 581 hours of testing in the Karhula facility, the elements retained approximately 87 percent of their as-fabricated strength. In addition, mechanical response testing at Virginia Tech provided a further demonstration of the high level of strain tolerance of the vacuum wound filter elements. Additional testing in the M. W. Kellogg unit at the PSDF has accumulated over 1800 hours of coal firing at temperatures of 760 įC including a severe thermal upset that resulted in the failure of several monolithic oxide elements. No failures of any kind have been reported for the MTI CFCC elements in either of these test campaigns. Additional testing is planned at the M. W. Kellogg unit and Foster Wheeler unit at the PSDF over the next year in order to qualify for consideration for the Lakeland PCFB. Process scale-up issues have been identified and manufacturing plans are being evaluated to meet the needs of future demand.

  1. INTERNATIONAL Presented by

    E-Print Network [OSTI]

    Keller, Arturo A.

    exhaust from the gas turbine is sent to a Heat Recovery Steam Generator (HRSG) The steam turbine drives Turbine B Steam Turbine Total Unit 3 185 MW170 MW 170 MW 525 MW Unit 4 185 MW170 MW 170 MW 525 MW Total plants MVPP water treatment and recovery system What to expect for power plant water use

  2. Analysis of the Energy Savings Potential in K-5 Schools in Hot and Humid Climates: Application of High Performance Measures and Renewable Energy Systems†

    E-Print Network [OSTI]

    Im, P.; Haberl, J.

    2010-01-01T23:59:59.000Z

    This paper presents the analysis of the energy savings potential in an existing K-5 school in hot and humid climates. Previous paper (Im and Haberl 2008b) presented a calibrated simulation procedure for an existing K-5 school in hot and humid area...

  3. Thermal Comfort Study in a Naturally Ventilated Residential Building in a Tropical Hot-Humid Climate Region

    E-Print Network [OSTI]

    Soebarto, V. I.; Handjarinto, S.

    1998-01-01T23:59:59.000Z

    This paper presents a thermal comfort study in a naturally ventilated residential building located in a tropical hot-humid climate region. The specific objective of this study is to investigate whether thermal comfort in this house can be achieved...

  4. Grundfos HVAC OEM Efficient water hydraulics

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    complexity ·20 years of experience in hydraulics for the Boiler System industry. ·Key success factor is our Benefits with an integrated solution #12;Heat pump unit with storage tank 1 2 Efficient water hydraulics 3 return Heatin g supply Cold wate r Hot water PRV Drain 3 way valve 1 2 3 air ventPT Grundfos flow sensor

  5. Meeting Notes and Presentations

    Office of Environmental Management (EM)

    of voting board members was documented. All members were present or had a representative present on the call. Previous 5 Focus Areas: Dave Tuttel presented the proposed...

  6. air-water vertical upward: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    HOT WATER & POOL REQUIREMENTS CEC-MECH-2C (Revised 0809) CALIFORNIA ENERGY COMMISSION WATER SIDE SYSTEM REQUIREMENTS (Part 2 30 Chapter 2 x Pressure Distribution in a Fluid 89...

  7. air-water cross flow: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    HOT WATER & POOL REQUIREMENTS CEC-MECH-2C (Revised 0809) CALIFORNIA ENERGY COMMISSION WATER SIDE SYSTEM REQUIREMENTS (Part 2 First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12...

  8. Extracting hot carriers from photoexcited semiconductor nanocrystals

    SciTech Connect (OSTI)

    Zhu, Xiaoyang

    2014-12-10T23:59:59.000Z

    This research program addresses a fundamental question related to the use of nanomaterials in solar energy -- namely, whether semiconductor nanocrystals (NCs) can help surpass the efficiency limits, the so-called ďShockley-QueisserĒ limit, in conventional solar cells. In these cells, absorption of photons with energies above the semiconductor bandgap generates ďhotĒ charge carriers that quickly ďcoolĒ to the band edges before they can be utilized to do work; this sets the solar cell efficiency at a limit of ~31%. If instead, all of the energy of the hot carriers could be captured, solar-to-electric power conversion efficiencies could be increased, theoretically, to as high as 66%. A potential route to capture this energy is to utilize semiconductor nanocrystals. In these materials, the quasi-continuous conduction and valence bands of the bulk semiconductor become discretized due to confinement of the charge carriers. Consequently, the energy spacing between the electronic levels can be much larger than the highest phonon frequency of the lattice, creating a ďphonon bottleneckĒ wherein hot-carrier relaxation is possible via slower multiphonon emission. For example, hot-electron lifetimes as long as ~1 ns have been observed in NCs grown by molecular beam epitaxy. In colloidal NCs, long lifetimes have been demonstrated through careful design of the nanocrystal interfaces. Due to their ability to slow electronic relaxation, semiconductor NCs can in principle enable extraction of hot carriers before they cool to the band edges, leading to more efficient solar cells.

  9. Avoiding Carbon Bed Hot Spots in Thermal Process Off-Gas Systems

    SciTech Connect (OSTI)

    Nick Soelberg; Joe Enneking

    2011-05-01T23:59:59.000Z

    Mercury has had various uses in nuclear fuel reprocessing and other nuclear processes, and so is often present in radioactive and mixed (radioactive and hazardous) wastes. Test programs performed in recent years have shown that mercury in off-gas streams from processes that treat radioactive wastes can be controlled using fixed beds of activated sulfur-impregnated carbon, to levels low enough to comply with air emission regulations such as the Hazardous Waste Combustor (HWC) Maximum Achievable Control Technology (MACT) standards. Carbon bed hot spots or fires have occurred several times during these tests, and also during a remediation of tanks that contained mixed waste. Hot spots occur when localized areas in a carbon bed become heated to temperatures where oxidation occurs. This heating typically occurs due to heat of absoption of gas species onto the carbon, but it can also be caused through external means such as external heaters used to heat the carbon bed vessel. Hot spots, if not promptly mitigated, can grow into bed fires. Carbon bed hot spots and fires must be avoided in processes that treat radioactive and mixed waste. Hot spots are detected by (a) monitoring in-bed and bed outlet gas temperatures, and (b) more important, monitoring of bed outlet gas CO concentrations. Hot spots are mitigated by (a) designing for appropriate in-bed gas velocity, for avoiding gas flow maldistribution, and for sufficient but not excessive bed depth, (b) appropriate monitoring and control of gas and bed temperatures and compositions, and (c) prompt implementation of corrective actions if bed hot spots are detected. Corrective actions must be implemented quickly if bed hot spots are detected, using a graded approach and sequence starting with corrective actions that are simple, quick, cause the least impact to the process, and are easiest to recover from.

  10. The Water Vapor Abundance in Orion KL Outflows

    E-Print Network [OSTI]

    J. Cernicharo; J. R. Goicoechea; F. Daniel; M. R. Lerate; M. J. Barlow; B. M. Swinyard; E. van Dishoeck; T. L. Lim; S. Viti; J. Yates

    2006-08-16T23:59:59.000Z

    We present the detection and modeling of more than 70 far-IR pure rotational lines of water vapor, including the 18O and 17O isotopologues, towards Orion KL. Observations were performed with the Long Wavelength Spectrometer Fabry-Perot (LWS/FP; R~6800-9700) on board the Infrared Space Observatory (ISO) between ~43 and ~197 um. The water line profiles evolve from P-Cygni type profiles (even for the H2O18 lines) to pure emission at wavelengths above ~100 um. We find that most of the water emission/absorption arises from an extended flow of gas expanding at 25+-5 kms^-1. Non-local radiative transfer models show that much of the water excitation and line profile formation is driven by the dust continuum emission. The derived beam averaged water abundance is 2-3x10^-5. The inferred gas temperature Tk=80-100 K suggests that: (i) water could have been formed in the "plateau" by gas phase neutral-neutral reactions with activation barriers if the gas was previously heated (e.g. by shocks) to >500 K and/or (ii) H2O formation in the outflow is dominated by in-situ evaporation of grain water-ice mantles and/or (iii) H2O was formed in the innermost and warmer regions (e.g. the hot core) and was swept up in ~1000 yr, the dynamical timescale of the outflow.

  11. Small-scale AFBC hot air gas turbine power cycle

    SciTech Connect (OSTI)

    Ashworth, R.A. [Energy and Environmental Research Corp., Orrville, OH (United States); Keener, H.M. [Ohio State Univ., Wooster, OH (United States). Ohio Agricultural Research and Development Center; Hall, A.W. [USDOE Morgantown Energy Technology Center, WV (United States)

    1995-12-31T23:59:59.000Z

    The Energy and Environmental Research Corporation (EER), the Ohio Agricultural Research and Development Center (OARDC), the Will-Burt Company (W-B) and the US Department of Energy (DOE) have successfully developed and completed pilot plant tests on a small scale atmospheric fluidized bed combustion (AFBC) system. This system can be used to generate electricity, and/or hot water, steam. Following successful pilot plant operation, commercial demonstration will take place at Cedar Lane Farms (CLF), near Wooster, Ohio. The system demonstration will be completed by the end of 1995. The project is being funded through a cooperative effort between the DOE, EER, W-B, OARDC, CLF and the Ohio Coal Development Office (OCDO). The small scale AFBC, has no internal heat transfer surfaces in the fluid bed proper. Combining the combustor with a hot air gas turbine (HAGT) for electrical power generation, can give a relatively high overall system thermal efficiency. Using a novel method of recovering waste heat from the gas turbine, a gross heat rate of 13,500 Btu/kWhr ({approximately}25% efficiency) can be achieved for a small 1.5 MW{sub e} plant. A low technology industrial recuperation type gas turbine is used that operates with an inlet blade temperature of 1,450 F and a compression ratio of 3.9:1. The AFBC-HAGT technology can be used to generate power for remote rural communities to replace diesel generators, or can be used for small industrial co-generation applications.

  12. Small-scale AFBC hot air gas turbine power cycle

    SciTech Connect (OSTI)

    Ashworth, R.A. [Energy and Environmental Research Corp., Orrville, OH (United States); Keener, H.M. [Ohio State Univ., Wooster, OH (United States). Ohio Agricultural Research and Development Center; Hall, A.W. [Dept. of Energy, Morgantown, WV (United States). Morgantown Energy Technology Center

    1995-12-31T23:59:59.000Z

    The Energy and Environmental Research Corporation (EER), the Ohio Agricultural Research and Development Center (OARDC), the Will-Burt Company (W-B) and the US Department of Energy (DOE) have successfully developed and completed pilot plant tests on a small scale atmospheric fluidized bed combustion (AFBC) system. This system can be used to generate electricity, and/or hot water, steam. Following successful pilot plant operation, commercial demonstration will take place at Cedar Lane Farms (CLF), near Wooster, Ohio. The system demonstration will be completed by the end of 1995. The small scale AFBC, has no internal heat transfer surfaces in the fluid bed proper. Combining the combustor with a hot air gas turbine (HAGT) for electrical power generation, can give a relatively high overall system thermal efficiency. Using a novel method of recovering waste heat from the gas turbine, a gross heat rate of 13,500 Btu/kWhr ({approximately} 25% efficiency) can be achieved for a small 1.5 MW{sub e} plant. A low technology industrial recuperation type gas turbine is used that operates with an inlet blade temperature of 1,450 F and a compression ratio of 3.9:1. The AFBC-HAGT technology can be used to generate power for remote rural communities to replace diesel generators, or can be used for small industrial co-generation applications.

  13. Status of LLNL Hot-Recycled-Solid oil shale retort

    SciTech Connect (OSTI)

    Baldwin, D.E.; Cena, R.J.

    1993-12-31T23:59:59.000Z

    We have investigated the technical and economic barriers facing the introduction of an oil shale industry and we have chosen Hot-Recycled-Solid (HRS) oil shale retorting as the primary advanced technology of interest. We are investigating this approach through fundamental research, operation of a 4 tonne-per-day, HRS pilot plant and development of an Oil Shale Process (OSP) mathematical model. Over the last three years, from June 1991 to June 1993, we completed a series of runs (H10--H27) using the 4-TPD pilot plant to demonstrate the technical feasibility of the HRS process and answer key scale-up questions. With our CRADA partners, we seek to further develop the HRS technology, maintain and enhance the knowledge base gained over the past two decades through research and development by Government and industry and determine the follow on steps needed to advance the technology towards commercialization. The LLNL Hot-Recycled-Solid process has the potential to improve existing oil shale technology. It processes oil shale in minutes instead of hours, reducing plant size. It processes all oil shale, including fines rejected by other processes. It provides controls to optimize product quality for different applications. It co-generates electricity to maximize useful energy output. And, it produces negligible SO{sub 2} and NO{sub x} emissions, a non-hazardous waste shale and uses minimal water.

  14. Allocating Reserve Requirements (Presentation)

    SciTech Connect (OSTI)

    Milligan, M.; Kirby, B.; King, J.

    2011-07-01T23:59:59.000Z

    This presentation provides an overview of present and possible future ways to allocate and assign benefits for reserve requirements.

  15. Locating hot and cold-legs in a nuclear powered steam generation system

    DOE Patents [OSTI]

    Ekeroth, D.E.; Corletti, M.M.

    1993-11-16T23:59:59.000Z

    A nuclear reactor steam generator includes a reactor vessel for heating water and a steam generator with a pump casing at the lowest point on the steam generator. A cold-leg pipe extends horizontally between the steam generator and the reactor vessel to return water from the steam generator to the reactor vessel. The bottom of the cold-leg pipe is at a first height above the bottom of the reactor vessel. A hot-leg pipe with one end connected to the steam generator and a second end connected to the reactor vessel has a first pipe region extending downwardly from the steam generator to a location between the steam generator and the reactor vessel at which a bottom of the hot-leg pipe is at a second height above the bottom of the reactor vessel. A second region extends from that location in a horizontal direction at the second height to the point at which the hot-leg pipe connects to the reactor vessel. A pump is attached to the casing at a location below the first and second heights and returns water from the steam generator to the reactor vessel over the cold-leg. The first height is greater than the second height and the bottom of the steam generator is at a height above the bottom of the reactor vessel that is greater than the first and second heights. A residual heat recovery pump is below the hot-leg and has an inlet line from the hot-leg that slopes down continuously to the pump inlet. 2 figures.

  16. Locating hot and cold-legs in a nuclear powered steam generation system

    DOE Patents [OSTI]

    Ekeroth, Douglas E. (Delmont, PA); Corletti, Michael M. (New Kensington, PA)

    1993-01-01T23:59:59.000Z

    A nuclear reactor steam generator includes a reactor vessel for heating water and a steam generator with a pump casing at the lowest point on the steam generator. A cold-leg pipe extends horizontally between the steam generator and the reactor vessel to return water from the steam generator to the reactor vessel. The bottom of the cold-leg pipe is at a first height above the bottom of the reactor vessel. A hot-leg pipe with one end connected to the steam generator and a second end connected to the reactor vessel has a first pipe region extending downwardly from the steam generator to a location between the steam generator and the reactor vessel at which a bottom of the hot-leg pipe is at a second height above the bottom of the reactor vessel. A second region extends from that location in a horizontal direction at the second height to the point at which the hot-leg pipe connects to the reactor vessel. A pump is attached to the casing at a location below the first and second heights and returns water from the steam generator to the reactor vessel over the cold-leg. The first height is greater than the second height and the bottom of the steam generator is at a height above the bottom of the reactor vessel that is greater than the first and second heights. A residual heat recovery pump is below the hot-leg and has an inlet line from the hot-leg that slopes down continuously to the pump inlet.

  17. Hot gas filter and system assembly

    DOE Patents [OSTI]

    Lippert, T.E.; Palmer, K.M.; Bruck, G.J.; Alvin, M.A.; Smeltzer, E.E.; Bachovchin, D.M.

    1999-08-31T23:59:59.000Z

    A filter element is described for separating fine dirty particles from a hot gas. The filter element comprises a first porous wall and a second porous wall. Each porous wall has an outer surface and an inner surface. The first and second porous walls being coupled together thereby forming a substantially closed figure and open at one end. The open end is formed to be coupled to a hot gas clean up system support structure. The first and second porous walls define a channel beginning at the open end and terminate at the closed end through which a filtered clean gas can flow through and out into the clean gas side of a hot gas clean up system. 8 figs.

  18. Radioactive hot cell access hole decontamination machine

    DOE Patents [OSTI]

    Simpson, William E. (Richland, WA)

    1982-01-01T23:59:59.000Z

    Radioactive hot cell access hole decontamination machine. A mobile housing has an opening large enough to encircle the access hole and has a shielding door, with a door opening and closing mechanism, for uncovering and covering the opening. The housing contains a shaft which has an apparatus for rotating the shaft and a device for independently translating the shaft from the housing through the opening and access hole into the hot cell chamber. A properly sized cylindrical pig containing wire brushes and cloth or other disks, with an arrangement for releasably attaching it to the end of the shaft, circumferentially cleans the access hole wall of radioactive contamination and thereafter detaches from the shaft to fall into the hot cell chamber.

  19. PowerPoint Presentation

    Broader source: Energy.gov (indexed) [DOE]

    Water Conditions and Energy Purchases: * SEPA purchased 9.2 million in replacement energy in FY 2011 * Average rate was 66.25 per MWH * SEPA purchased 7.6 million in replacement...

  20. Power control system for a hot gas engine

    DOE Patents [OSTI]

    Berntell, John O. (Staffanstorp, SE)

    1986-01-01T23:59:59.000Z

    A power control system for a hot gas engine of the type in which the power output is controlled by varying the mean pressure of the working gas charge in the engine has according to the present invention been provided with two working gas reservoirs at substantially different pressure levels. At working gas pressures below the lower of said levels the high pressure gas reservoir is cut out from the control system, and at higher pressures the low pressure gas reservoir is cut out from the system, thereby enabling a single one-stage compressor to handle gas within a wide pressure range at a low compression ratio.

  1. Spherical Accretion onto Neutron Stars Revisited: Are Hot Solutions Possible ?

    E-Print Network [OSTI]

    Roberto Turolla; Luca Zampieri; Monica Colpi; Aldo Treves

    1994-02-21T23:59:59.000Z

    Stationary, spherical accretion onto an unmagnetized neutron star is here reconsidered on the wake of the seminal paper by Zel'dovich \\& Shakura (1969). It is found that new ``hot'' solutions may exist for a wide range of luminosities. These solutions are characterized by a high temperature, $10^{9}\\div 10^{11}$ K, and arise from a stationary equilibrium model where the dominant radiative mechanisms are multiple Compton scattering and bremsstrahlung emission. For low luminosities, $\\mincir 10^{-2} \\ L_{E}$, only the ``cold'' (\\`a la Zel'dovich and Shakura) solution is present.

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

    E-Print Network [OSTI]

    Burger, R.

    requirements before a cooling tower is purchased. This relates to the volume of circulating water, hot water temperature on the tower, cold water discharge, and wet bulb temperature (consisting of ambient temperature and relative humidity). After the tower...

  3. Hot dry rock venture risks investigation:

    SciTech Connect (OSTI)

    Not Available

    1988-01-01T23:59:59.000Z

    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.

  4. Water Resources Water Quality and Water Treatment

    E-Print Network [OSTI]

    Sohoni, Milind

    Water Resources TD 603 Lecture 1: Water Quality and Water Treatment CTARA Indian Institute of Technology, Bombay 2nd November, 2011 #12;OVERVIEW Water Quality WATER TREATMENT PLANTS WATER TREATMENT PLANTS WATER TREATMENT PLANTS WATER TRE OVERVIEW OF THE LECTURE 1. Water Distribution Schemes Hand Pump

  5. Orlando Utilities Commission- Residential Solar Water Heater Rebate Program

    Broader source: Energy.gov [DOE]

    Through a partnership with the Orlando Federal Credit Union (OFCU), OUC also offers a Residential Solar Loan Program to finance the solar hot water system. Customers who choose to finance through...

  6. Water-Efficiency Program Prioritization

    Broader source: Energy.gov [DOE]

    Presentation outlines water-efficiency program requirements and priorities as presented to Federal agencies by the Federal Energy Management Program.

  7. GivingPresentations 77Giving Presentations

    E-Print Network [OSTI]

    Chaudhuri, Sanjay

    presentation, e.g. I want the audience to understand the causes of global warming or I want the audience to be persuaded that they can do something about global warming or a combination of both. 7.1.2 Analyse your

  8. Retrieval and Repackaging of RH-TRU Waste - General Presentation Modular Hot Cell Technology

    Office of Environmental Management (EM)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic2 OPAM615_CostNSAR -DepartmentRetail Demand Response in Southwest PowerOf

  9. CEES Publications and Presentations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    & Presentations CEES-Authored and Co-Authored Cover Stories Peer-Reviewed Publications Conference Proceedings, Abstracts, Presentations, and Poster Sessions Patents Frontiers in...

  10. IACT Publications and Presentations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Publications and Presentations Peer-Reviewed Publications Conference Proceedings, Abstracts, Presentations, and Poster Sessions IACT-funded Master and Doctoral Theses September...

  11. Preliminary safety analysis report for the Auxiliary Hot Cell Facility, Sandia National Laboratories, Albuquerque, New Mexico

    SciTech Connect (OSTI)

    OSCAR,DEBBY S.; WALKER,SHARON ANN; HUNTER,REGINA LEE; WALKER,CHERYL A.

    1999-12-01T23:59:59.000Z

    The Auxiliary Hot Cell Facility (AHCF) at Sandia National Laboratories, New Mexico (SNL/NM) will be a Hazard Category 3 nuclear facility used to characterize, treat, and repackage radioactive and mixed material and waste for reuse, recycling, or ultimate disposal. A significant upgrade to a previous facility, the Temporary Hot Cell, will be implemented to perform this mission. The following major features will be added: a permanent shield wall; eight floor silos; new roof portals in the hot-cell roof; an upgraded ventilation system; and upgraded hot-cell jib crane; and video cameras to record operations and facilitate remote-handled operations. No safety-class systems, structures, and components will be present in the AHCF. There will be five safety-significant SSCs: hot cell structure, permanent shield wall, shield plugs, ventilation system, and HEPA filters. The type and quantity of radionuclides that could be located in the AHCF are defined primarily by SNL/NM's legacy materials, which include radioactive, transuranic, and mixed waste. The risk to the public or the environment presented by the AHCF is minor due to the inventory limitations of the Hazard Category 3 classification. Potential doses at the exclusion boundary are well below the evaluation guidelines of 25 rem. Potential for worker exposure is limited by the passive design features incorporated in the AHCF and by SNL's radiation protection program. There is no potential for exposure of the public to chemical hazards above the Emergency Response Protection Guidelines Level 2.

  12. Dutch experience with hot windbox repowering

    SciTech Connect (OSTI)

    Ploumen, P.J. [KEMA Nederland B.V., Arnhem (Netherlands); Veenema, J.J. [EPON, Zwolle (Netherlands)

    1995-10-01T23:59:59.000Z

    This paper gives an overview of the options available for repowering existing fossil fuel power plants. It includes an examination of the hot windbox repowering program in the Netherlands. The topics of the paper include efficiency improvement, NO{sub x} emission decrease, power increase, flexibility, and an economic evaluation of repowering.

  13. Hot-dry-rock geothermal resource 1980

    SciTech Connect (OSTI)

    Heiken, G.; Goff, F.; Cremer, G. (ed.)

    1982-04-01T23:59:59.000Z

    The work performed on hot dry rock (HDR) geothermal resource evaluation, site characterization, and geophysical exploration techniques is summarized. The work was done by region (Far West, Pacific Northwest, Southwest, Rocky Mountain States, Midcontinent, and Eastern) and limited to the conterminous US.

  14. Plasmas are Hot and Fusion is Cool

    SciTech Connect (OSTI)

    None

    2011-01-01T23:59:59.000Z

    Plasmas are Hot and Fusion is Cold. The DOE Princeton Plasma Physics Laboratory (PPPL) collaborates to develop fusion as a safe, clean and abundant energy source for the future. This video discusses PPPL's research and development on plasma, the fourth state of matter.

  15. Transfer of hot dry rock technology

    SciTech Connect (OSTI)

    Smith, M.C.

    1985-11-01T23:59:59.000Z

    The Hot Dry Rock Geothermal Energy Development Program has focused worldwide attention on the facts that natural heat in the upper part of the earth's crust is an essentially inexhaustible energy resource which is accessible almost everywhere, and that practical means now exist to extract useful heat from the hot rock and bring it to the earth's surface for beneficial use. The Hot Dry Rock Program has successfully constructed and operated a prototype hot, dry rock energy system that produced heat at the temperatures and rates required for large-scale space heating and many other direct uses of heat. The Program is now in the final stages of constructing a larger, hotter system potentially capable of satisfying the energy requirements of a small, commercial, electrical-generating power plant. To create and understand the behavior of such system, it has been necessary to develop or support the development of a wide variety of equipment, instruments, techniques, and analyses. Much of this innovative technology has already been transferred to the private sector and to other research and development programs, and more is continuously being made available as its usefulness is demonstrated. This report describes some of these developments and indicates where this new technology is being used or can be useful to industry, engineering, and science.

  16. Presented by Lemonade $3.00

    E-Print Network [OSTI]

    Hampton, Randy

    , Blackberry, Pink Grapefruit or Pomegranate Boxed Water $3.00 Mezza Plate $6.00 Hummus, Mediterranean Eggplant.00 Traditional French Salad - Mixed Greens Tossed With Potatoes, Green Beans, "Genova Tonna" Tuna, Boiled Egg, Blackberry, Pink Grapefruit or Pomegranate Boxed Water $3.00 Presented by Dessert Menu #12;

  17. Development and Analysis of a Sustainable Low Energy House in a Hot and Humid Climate

    E-Print Network [OSTI]

    Chulsukon, P.; Haberl, J. S.; Degelman, L. O.; Sylvester, K. E.

    2002-01-01T23:59:59.000Z

    cooling. In cold-climate countries, electricity is often used for space heating as well. Natural gas is mainly Energy Used in Building Demolition Demolition Removal Energy Used in Building Operation Space Cooling Lighting Equipment Water... Lifetime Building Energy Consumption Figure 1: Lifetime Building Energy Consumption Components for a Typical Residence in Thailand. used for only cooking for hot and humid climates such as Thailand. In cold climates, gas is also used for space...

  18. Short-Term Test Results: Transitional Housing Energy Efficiency Retrofit in the Hot-Humid Climate

    SciTech Connect (OSTI)

    Sutherland, K.; Martin, E.

    2013-02-01T23:59:59.000Z

    This project evaluates the renovation of a 5,800 ft2, multi-use facility located in St. Petersburg, on the west coast of central Florida, in the hot humid climate. An optimal package of retrofit measures was designed to deliver 30-40% annual energy cost savings for this building with annual utility bills exceeding $16,000 and high base load consumption. Researchers projected energy cost savings for potential retrofit measures based on pre-retrofit findings and disaggregated, weather normalized utility bills as a basis for simulation true-up. A cost-benefit analysis was conducted for the seven retrofit measures implemented; adding attic insulation and sealing soffits, tinting windows, improving whole building air-tightness, upgrading heating and cooling systems and retrofitting the air distribution system, replacing water heating systems, retrofitting lighting, and replacing laundry equipment. The projected energy cost savings for the full retrofit package based on a post-retrofit audit is 35%. The building's architectural characteristics, vintage, and residential and commercial uses presented challenges for both economic projections and retrofit measure construction.

  19. The High Albedo of the Hot Jupiter Kepler-7 B

    E-Print Network [OSTI]

    Demory, Brice-Olivier

    Hot Jupiters are expected to be dark from both observations (albedo upper limits) and theory (alkali metals and/or TiO and VO absorption). However, only a handful of hot Jupiters have been observed with high enough photometric ...

  20. STEP Partner Presentation

    Broader source: Energy.gov [DOE]

    STEP Partner Presentation, from the Tool Kit Framework: Small Town University Energy Program (STEP).

  1. STEP Conference Presentation

    Broader source: Energy.gov [DOE]

    STEP Conference Presentation, from the Tool Kit Framework: Small Town University Energy Program (STEP).

  2. 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.

    1985-01-01T23:59:59.000Z

    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)

  3. White Dwarfs and Hot Subdwarfs as Seen from FUSE

    E-Print Network [OSTI]

    G. Fontaine; P. Chayer

    2004-11-03T23:59:59.000Z

    We present a small collection of FUSE spectra representative of the main spectral classes found in white dwarf stars. In addition, we also discuss another family of hot evolved stars, that of the hot subdwarfs. Both families belong to the chemically peculiar stars, and it is thought that a complex interplay of competing processes such as gravitational settling, ordinary diffusion, radiative levitation, weak stellar winds, and accretion is responsible for the rich variety of atmospheric compositions observed in those objects. FUSE is playing a key role in the current quest for establishing a coherent theory of the spectral evolution of these stars as it allows the determination of the patterns of heavy element abundances at a significantly higher level of accuracy than has been possible before on the basis of optical or UV observations. We also briefly present some fascinating FUV light curves of a handful of pulsating subdwarf B stars, thus illustrating the unique potential of FUSE for asteroseismological studies, a potential which has not been exploited yet.

  4. Cuttings Analysis At Roosevelt Hot Springs Area (Christensen...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Cuttings Analysis At Roosevelt Hot Springs Area (Christensen, Et Al., 1983) Exploration Activity...

  5. Pressure Temperature Log At Roosevelt Hot Springs Geothermal...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Pressure Temperature Log At Roosevelt Hot Springs Geothermal Area (Faulder, 1991) Exploration Activity...

  6. WATER RESOURCES ,'JEBRASKA WATER RESOURCES RESEARCH INSTITUTE

    E-Print Network [OSTI]

    Nebraska-Lincoln, University of

    of transportation, urban blight, agricultural practices, land use, etc. Water resources problems often result fromWATER RESOURCES ,'JEBRASKA WATER RESOURCES RESEARCH INSTITUTE 212 AGRICULTURAL ENGINEERING BUILDING formulate sound policy without a good deal of knowledge not presently available. Without adequate models

  7. Large-eddy simulations of structure effects of an upstream elbow main pipe on hot and cold fluids mixing in a vertical tee junction

    E-Print Network [OSTI]

    Attinger, Daniel

    in e.g. nuclear power plants. In the present work, the mixing of a hot and a cold fluid streamLarge-eddy simulations of structure effects of an upstream elbow main pipe on hot and cold fluids Fuel Injection Equipment Stock Co., Ltd., Beijing 100166, China c Department of Mechanical Engineering

  8. Development of NDE methods for hot gas filters.

    SciTech Connect (OSTI)

    Deemer, C.; Ellingson, W. A.; Koehl, E. R.; Lee, H.; Spohnholtz, T.; Sun, J. G.

    1999-07-21T23:59:59.000Z

    Ceramic hot gas candle filters are currently under development for hot gas particulate cleanup in advanced coal-based power systems. The ceramic materials for these filters include nonoxide monolithic, nonoxide-fiber-reinforced composites, and nonoxide reticulated foam. A concern is the lack of reliable data on which to base decisions for reusing or replacing hot gas filters during plant shutdowns. The work in this project is aimed at developing nondestructive evaluation (FIDE) technology to allow detection, and determination of extent, of life-limiting characteristics such as thermal fatigue, oxidation, damage from ash bridging such as localized cracking, damage from local burning, and elongation at elevated temperature. Although in-situ NDE methods are desirable in order to avoid disassembly of the candle filter vessels, the current vessel designs, the presence of filter cakes and possible ash bridging, and the state of NDE technology prevent this. Candle filter producers use a variety of NDE methods to ensure as-produced quality. While impact acoustic resonance offers initial promise for examining new as-produced filters and for detecting damage in some monolithic filters when removed from service, it presents difficulties in data interpretation, it lacks localization capability, and its applicability to composites has yet to be demonstrated. Additional NDE technologies being developed and evaluated in this program and whose applicability to both monolithics and composites has been demonstrated include (a) full-scale thermal imaging for analyzing thermal property variations; (b) fret, high-spatial-resolution X-ray imaging for detecting density variations and dimensional changes; (c) air-coupled ultrasonic methods for determining through-thickness compositional variations; and (d) acoustic emission technology with mechanical loading for detecting localized bulk damage. New and exposed clay-bonded SiC filters and CVI-SiC composite filters have been tested with these additional NDE methods.

  9. Detection of the thermal radio continuum emission from the G9.62+0.19-F Hot Core

    E-Print Network [OSTI]

    L. Testi; P. Hofner; S. Kurtz; M. Rupen

    2000-06-15T23:59:59.000Z

    We present new high resolution and high sensitivity multi-frequency VLA radio continuum observations of the G9.62+0.19-F hot molecular core. We detect for the first time faint centimetric radio continuum emission at the position of the core. The centimetric continuum spectrum of the source is consistent with thermal emission from ionised gas. This is the first direct evidence that a newly born massive star is powering the G9.62+0.19-F hot core.

  10. Renewable Energy 101 (Presentation)

    SciTech Connect (OSTI)

    Walker, A.

    2012-03-01T23:59:59.000Z

    Presentation given at the 2012 Department of Homeland Security Renewable Energy Roundtable as an introduction to renewable technologies and applications.

  11. Senior Debt Fastball Presentation

    Broader source: Energy.gov [DOE]

    Plenary III: Project Finance and Investment Senior Debt Fastball Presentation Phillip Thomas, Senior Vice President of Commercial Lending, Heartland Bank

  12. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Mai, T.

    2012-08-01T23:59:59.000Z

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. This presentation was presented in a Wind Powering America webinar on August 15, 2012 and is now available through the Wind Powering America website.

  13. New concept for internal heat production in hot Jupiter exo-planets, thermonuclear ignition of dark

    E-Print Network [OSTI]

    J. Marvin Herndon

    2008-01-01T23:59:59.000Z

    Discovery of hot Jupiter exo-planets, those with anomalously inflated size and low density relative to Jupiter, has evoked much discussion as to possible sources of internal heat production. But to date, no explanations have come forth that are generally applicable. The explanations advanced typically involve presumed tidal dissipation and/or converted incident stellar radiation. The present, brief communication suggests a novel interfacial nuclear fission-fusion source of internal heat production for hot Jupiters that has been overlooked by theoreticians and which has potentially general applicability.

  14. The Light Curve Variations of The Active Binaries With Hot Subdwarf Component

    E-Print Network [OSTI]

    Esin Sipahi; Serdar Evren

    2006-07-10T23:59:59.000Z

    We present the light curve variations of the two active binaries with hot subdwarf component. According to the brightness variations outside of the eclipses, the giant components of the systems are chromospherically active stars. The dark and cool active structures on this components cause the variations of the total light of the systems.

  15. Analysis of the Energy Savings Potential in K-5 Schools in Hot and Humid Climates

    E-Print Network [OSTI]

    Im, P.; Haberl, J.

    This paper presents the analysis of the energy savings potential in K-5 schools in hot and humid climates. For the analysis, an existing K-5 school in Central Texas was selected as a case study school, and the building energy related data...

  16. Stabilisation of ferrite in hot rolled d-TRIP steel , K. Y. Lee2

    E-Print Network [OSTI]

    Cambridge, University of

    Stabilisation of ferrite in hot rolled d-TRIP steel H. L. Yi1 , K. Y. Lee2 and H. K. D. H of retained austenite present in association with bainitic ferrite. It has as its major microstructural component, dendrites of d-ferrite introduced during solidification. The d-ferrite replaces

  17. Analysis of the Energy Savings Potential in K-5 Schools in Hot and Humid Climates†

    E-Print Network [OSTI]

    Im, P.; Haberl, J.

    2008-01-01T23:59:59.000Z

    This paper presents the analysis of the energy savings potential in K-5 schools in hot and humid climates. For the analysis, an existing K-5 school in Central Texas was selected as a case study school, and the building energy related data...

  18. DROPLET-BASED HOT SPOT COOLING USING TOPLESS DIGITAL MICROFLUIDICS ON A PRINTED CIRCUIT BOARD

    E-Print Network [OSTI]

    Paris-Sud XI, Universitť de

    DROPLET-BASED HOT SPOT COOLING USING TOPLESS DIGITAL MICROFLUIDICS ON A PRINTED CIRCUIT BOARD Phil demonstrated a cooling method on a "digital microfluidics" platform whereby discrete droplets are manipulated and the effective flow rate of the droplets. The results presented here suggest that digital microfluidics

  19. Electrophoretic Clarification of Water

    E-Print Network [OSTI]

    Hiler, E. A.; Lyle, W. M.

    There is an ever growing need for new and superior water treatment methods which will remove the alarming growth and variety of pollutants present in our waters. Suspended particulate matter such as clay, algae, and bacteria are troublesome...

  20. HOT ELECTRON ENERGY DISTRIBUTIONS FROM ULTRA-INTENSE LASER SOLID INTERACTIONS

    SciTech Connect (OSTI)

    Chen, H; Wilks, S C; Kruer, W; Patel, P; Shepherd, R

    2008-10-08T23:59:59.000Z

    Measurements of electron energy distributions from ultra-intense (>10{sup 19} W/cm{sup 2}) laser-solid interactions using an electron spectrometer are presented. These measurements were performed on the Vulcan petawatt laser at Rutherford Appleton Laboratory and the Callisto laser at Lawrence Livermore National Laboratory. The effective hot electron temperatures (T{sub hot}) have been measured for laser intensities (I{lambda}{sup 2}) from 10{sup 18} W/cm{sup 2} {micro}m{sup 2} to 10{sup 21} W/cm{sup 2} {micro}m{sup 2} for the first time, and T{sub hot} is found to increase as (I{lambda}{sup 2}){sup 0.34} {+-} 0.4. This scaling agrees well with the empirical scaling published by Beg et al. (1997), and is explained by a simple physical model that gives good agreement with experimental results and particle-in-cell simulations.

  1. Dynamic S0 Galaxies II: the Role of Diffuse Hot Gas

    E-Print Network [OSTI]

    Li, Jiang-Tao; Li, Zhiyuan; Chen, Yang

    2011-01-01T23:59:59.000Z

    Gas loss is thought to be important in SF quenching and morphological transition during the evolution of S0 galaxies. In high density environments, gas loss can be achieved via many external mechanisms. However, in relatively isolated environments, where these external mechanisms cannot be efficient, gas loss must be dominated by some internal processes. We perform Chandra analysis of hot gas in five nearby isolated S0 galaxies, based on quantitative subtraction of various stellar contributions. We find that all the galaxies studied in the present work are X-ray faint, with the hot gas luminosity LXcold-hot gas relation, and gas removal from S0 galaxies in isolated environments. We find that elliptical and S0 galaxies are not significantly different in LX at the low mass end (typically with LK<1e11Lsun). However, at the high mass end, S0 galax...

  2. 2010 Water & Aqueous Solutions

    SciTech Connect (OSTI)

    Dor Ben-Amotz

    2010-08-13T23:59:59.000Z

    Water covers more than two thirds of the surface of the Earth and about the same fraction of water forms the total mass of a human body. Since the early days of our civilization water has also been in the focus of technological developments, starting from converting it to wine to more modern achievements. The meeting will focus on recent advances in experimental, theoretical, and computational understanding of the behavior of the most important and fascinating liquid in a variety of situations and applications. The emphasis will be less on water properties per se than on water as a medium in which fundamental dynamic and reactive processes take place. In the following sessions, speakers will discuss the latest breakthroughs in unraveling these processes at the molecular level: Water in Solutions; Water in Motion I and II; Water in Biology I and II; Water in the Environment I and II; Water in Confined Geometries and Water in Discussion (keynote lecture and poster winners presentations).

  3. Method for hot pressing beryllium oxide articles

    DOE Patents [OSTI]

    Ballard, Ambrose H. (Oak Ridge, TN); Godfrey, Jr., Thomas G. (Oak Ridge, TN); Mowery, Erb H. (Clinton, TN)

    1988-01-01T23:59:59.000Z

    The hot pressing of beryllium oxide powder into high density compacts with little or no density gradients is achieved by employing a homogeneous blend of beryllium oxide powder with a lithium oxide sintering agent. The lithium oxide sintering agent is uniformly dispersed throughout the beryllium oxide powder by mixing lithium hydroxide in an aqueous solution with beryllium oxide powder. The lithium hydroxide is converted in situ to lithium carbonate by contacting or flooding the beryllium oxide-lithium hydroxide blend with a stream of carbon dioxide. The lithium carbonate is converted to lithium oxide while remaining fixed to the beryllium oxide particles during the hot pressing step to assure uniform density throughout the compact.

  4. Baroclinic Instability on Hot Extrasolar Planets

    E-Print Network [OSTI]

    Polichtchouk, Inna

    2012-01-01T23:59:59.000Z

    We investigate baroclinic instability in flow conditions relevant to hot extrasolar planets. The instability is important for transporting and mixing heat, as well as for influencing large-scale variability on the planets. Both linear normal mode analysis and non-linear initial value calculations are carried out -- focusing on the freely-evolving, adiabatic situation. Using a high-resolution general circulation model (GCM) which solves the traditional primitive equations, we show that large-scale jets similar to those observed in current GCM simulations of hot extrasolar giant planets are likely to be baroclinically unstable on a timescale of few to few tens of planetary rotations, generating cyclones and anticyclones that drive weather systems. The growth rate and scale of the most unstable mode obtained in the linear analysis are in qualitative, good agreement with the full non-linear calculations. In general, unstable jets evolve differently depending on their signs (eastward or westward), due to the chang...

  5. Enabling Technologies for Ceramic Hot Section Components

    SciTech Connect (OSTI)

    Venkat Vedula; Tania Bhatia

    2009-04-30T23:59:59.000Z

    Silicon-based ceramics are attractive materials for use in gas turbine engine hot sections due to their high temperature mechanical and physical properties as well as lower density than metals. The advantages of utilizing ceramic hot section components include weight reduction, and improved efficiency as well as enhanced power output and lower emissions as a result of reducing or eliminating cooling. Potential gas turbine ceramic components for industrial, commercial and/or military high temperature turbine applications include combustor liners, vanes, rotors, and shrouds. These components require materials that can withstand high temperatures and pressures for long duration under steam-rich environments. For Navy applications, ceramic hot section components have the potential to increase the operation range. The amount of weight reduced by utilizing a lighter gas turbine can be used to increase fuel storage capacity while a more efficient gas turbine consumes less fuel. Both improvements enable a longer operation range for Navy ships and aircraft. Ceramic hot section components will also be beneficial to the Navy's Growth Joint Strike Fighter (JSF) and VAATE (Versatile Affordable Advanced Turbine Engines) initiatives in terms of reduced weight, cooling air savings, and capability/cost index (CCI). For DOE applications, ceramic hot section components provide an avenue to achieve low emissions while improving efficiency. Combustors made of ceramic material can withstand higher wall temperatures and require less cooling air. Ability of the ceramics to withstand high temperatures enables novel combustor designs that have reduced NO{sub x}, smoke and CO levels. In the turbine section, ceramic vanes and blades do not require sophisticated cooling schemes currently used for metal components. The saved cooling air could be used to further improve efficiency and power output. The objectives of this contract were to develop technologies critical for ceramic hot section components for gas turbine engines. Significant technical progress has been made towards maturation of the EBC and CMC technologies for incorporation into gas turbine engine hot-section. Promising EBC candidates for longer life and/or higher temperature applications relative to current state of the art BSAS-based EBCs have been identified. These next generation coating systems have been scaled-up from coupons to components and are currently being field tested in Solar Centaur 50S engine. CMC combustor liners were designed, fabricated and tested in a FT8 sector rig to demonstrate the benefits of a high temperature material system. Pretest predictions made through the use of perfectly stirred reactor models showed a 2-3x benefit in CO emissions for CMC versus metallic liners. The sector-rig test validated the pretest predictions with >2x benefit in CO at the same NOx levels at various load conditions. The CMC liners also survived several trip shut downs thereby validating the CMC design methodology. Significant technical progress has been made towards incorporation of ceramic matrix composites (CMC) and environmental barrier coatings (EBC) technologies into gas turbine engine hot-section. The second phase of the program focused on the demonstration of a reverse flow annular CMC combustor. This has included overcoming the challenges of design and fabrication of CMCs into 'complex' shapes; developing processing to apply EBCs to 'engine hardware'; testing of an advanced combustor enabled by CMCs in a PW206 rig; and the validation of performance benefits against a metal baseline. The rig test validated many of the pretest predictions with a 40-50% reduction in pattern factor compared to the baseline and reductions in NOx levels at maximum power conditions. The next steps are to develop an understanding of the life limiting mechanisms in EBC and CMC materials, developing a design system for EBC coated CMCs and durability testing in an engine environment.

  6. Wall Drying in Hot and Humid Climates

    E-Print Network [OSTI]

    Boone, K.; Weston, T.; Pascual, X.

    2004-01-01T23:59:59.000Z

    WALL DRYING IN HOT AND HUMID CLIMATES Kimdolyn Boone Theresa Weston, PhD Xuaco Pascual Product Development Engineer Building Scientist Field Services Engineer E.I. du Pont de Nemours and Company Richmond, VA ABSTRACT... time based on the varying weather conditions. Constant interior conditions of 70?F and 55% RH were chosen. This corresponds to typical interior temperatures and a high level of moisture production within the house. This was chosen as a worse...

  7. Hot One-Temperature Accretion Flows Revisited

    E-Print Network [OSTI]

    Feng Yuan; Ronald E. Taam; Yongquan Xue; Wei Cui

    2005-09-11T23:59:59.000Z

    The effectiveness of the thermal coupling of ions and electrons in the context of optically thin, hot accretion flows is investigated. In the limit of complete coupling, we focus on the one-temperature accretion flows. Based on a global analysis, the results are compared with two-temperature accretion flow models and with the observations of black hole sources. Many features are quite similar. That is, hot one-temperature solutions are found to exist for mass flow rates less than a critical value; i.e., $\\dot{M}\\la 10\\alpha^2\\dot{M}_{\\rm Edd}$, where $\\dot{M}_{\\rm Edd}= L_{\\rm Edd}/c^2$ is the Eddington accretion rate. At low mass flow rates, $\\dot{M}\\la 10^{-3}\\alpha^2 \\dot{M}_{\\rm Edd}$, the solution is in the advection-dominated accretion flow (ADAF) regime. But at higher rates, radiative cooling is effective and is mainly balanced by advective {\\em heating}, placing the solution in the regime of luminous hot accretion flow (LHAF). To test the viability of the one-temperature models, we have fitted the spectra of the two black hole sources, Sgr A* and XTE J1118+480, which have been examined successfully with two-temperature models. It is found that the one-temperature models do not provide acceptable fits to the multi-wavelength spectra of Sgr A* nor to XTE J1118+480 as a result of the higher temperatures characteristic of the one-temperature models. It is concluded that the thermal coupling of ions and electrons cannot be fully effective and that a two-temperature description is required in hot accretion flow solutions.

  8. OHMIC DISSIPATION IN THE INTERIORS OF HOT JUPITERS

    SciTech Connect (OSTI)

    Huang Xu [Department of Astrophysical Sciences, 4 Ivy Lane, Peyton Hall, Princeton University, Princeton, NJ 08544 (United States); Cumming, Andrew, E-mail: xuhuang@princeton.edu, E-mail: cumming@physics.mcgill.ca [Department of Physics, McGill University, 3600 Rue University, Montreal, QC H3A 2T8 (Canada)

    2012-09-20T23:59:59.000Z

    We present models of ohmic heating in the interiors of hot Jupiters in which we decouple the interior and the wind zone by replacing the wind zone with a boundary temperature T{sub iso} and magnetic field B{sub {phi}0}. Ohmic heating influences the contraction of gas giants in two ways: by direct heating within the convection zone and by heating outside the convection zone, which increases the effective insulation of the interior. We calculate these effects and show that internal ohmic heating is only able to slow the contraction rate of a cooling gas giant once the planet reaches a critical value of internal entropy. We determine the age of the gas giant when ohmic heating becomes important as a function of mass, T{sub iso}, and induced B{sub {phi}0}. With this survey of parameter space complete, we then adopt the wind zone scalings of Menou and calculate the expected evolution of gas giants with different levels of irradiation. We find that, with this prescription of magnetic drag, it is difficult to inflate massive planets or those with strong irradiation using ohmic heating, meaning that we are unable to account for many of the observed hot Jupiter radii. This is in contrast to previous evolutionary models that assumed that a constant fraction of the irradiation is transformed into ohmic power.

  9. Baryonic fraction in the cold plus hot dark matter universe

    E-Print Network [OSTI]

    Eunwoo Choi; Dongsu Ryu

    1997-10-08T23:59:59.000Z

    We report a study to constrain the fraction of baryonic matter in the cold plus hot dark matter (CHDM) universe by numerical simulations which include the hydrodynamics of baryonic matter as well as the particle dynamics of dark matter. Spatially flat, COBE-normalized CHDM models with the fraction of hot component $\\Omega_h\\leq0.2$ are considered. We show that the models with $h/n/\\Omega_h=0.5/0.9/0.1$ and $0.5/0.9/0.2$ give a linear power spectrum which agrees well with observations. Here, $h$ is the Hubble constant in unit of $100~km/s/Mpc$ and $n$ is the spectral index of the initial power spectrum. Then, for the models with $h/n/\\Omega_h=0.5/0.9/0.2$ and baryonic fraction $\\Omega_b=0.05$ and 0.1 we calculate the properties of X-ray clusters, such as luminosity function, temperature distribution function, luminosity-temperature relation, histogram of gas to total mass ratio, and change of average temperature with redshift $z$. Comparison with the observed data of X-ray clusters indicates that the model with $\\Omega_b=0.05$ is preferred. The COBE-normalized CHDM model with $\\Omega_b>0.1$ may be ruled out by the present work, since it produces too many X-ray bright clusters.

  10. Hot spot-derived shock initiation phenomena in heterogeneous nitromethane

    SciTech Connect (OSTI)

    Dattelbaum, Dana M [Los Alamos National Laboratory; Sheffield, Stephen A [Los Alamos National Laboratory; Stahl, David B [Los Alamos National Laboratory; Dattelbaum, Andrew M [Los Alamos National Laboratory

    2009-01-01T23:59:59.000Z

    The addition of solid silica particles to gelled nitromethane offers a tractable model system for interrogating the role of impedance mismatches as one type of hot spot 'seed' on the initiation behaviors of explosive formulations. Gas gun-driven plate impact experiments are used to produce well-defined shock inputs into nitromethane-silica mixtures containing size-selected silica beads at 6 wt%. The Pop-plots or relationships between shock input pressure and rundistance (or time)-to-detonation for mixtures containing small (1-4 {micro}m) and large (40 {micro}m) beads are presented. Overall, the addition of beads was found to influence the shock sensitivity of the mixtures, with the smaller beads being more sensitizing than the larger beads, lowering the shock initiation threshold for the same run distance to detonation compared with neat nitromethane. In addition, the use of embedded electromagnetic gauges provides detailed information pertaining to the mechanism of the build-up to detonation and associated reactive flow. Of note, an initiation mechanism characteristic of homogeneous liquid explosives, such as nitromethane, was observed in the nitromethane-40 {micro}m diameter silica samples at high shock input pressures, indicating that the influence of hot spots on the initiation process was minimal under these conditions.

  11. THE DISCOVERY OF PULSATING HOT SUBDWARFS IN NGC 2808

    SciTech Connect (OSTI)

    Brown, Thomas M. [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States)] [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Landsman, Wayne B. [Adnet Systems, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)] [Adnet Systems, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Randall, Suzanna K. [European Southern Observatory, Karl-Schwarzschild-Str. 2, D-85748 Garching bei MŁnchen (Germany)] [European Southern Observatory, Karl-Schwarzschild-Str. 2, D-85748 Garching bei MŁnchen (Germany); Sweigart, Allen V. [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)] [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Lanz, Thierry, E-mail: tbrown@stsci.edu, E-mail: Wayne.Landsman@nasa.gov, E-mail: srandall@eso.org, E-mail: allen.sweigart@gmail.com, E-mail: Thierry.Lanz@oca.eu [Laboratoire Lagrange, UMR7293, Universitť de Nice Sophia-Antipolis, CNRS, Observatoire de la CŰte dAzur, F-06304 Nice (France)] [Laboratoire Lagrange, UMR7293, Universitť de Nice Sophia-Antipolis, CNRS, Observatoire de la CŰte dAzur, F-06304 Nice (France)

    2013-11-10T23:59:59.000Z

    We present the results of a Hubble Space Telescope program to search for pulsating hot subdwarfs in the core of NGC 2808. These observations were motivated by the recent discovery of such stars in the outskirts of ? Cen. Both NGC 2808 and ? Cen are massive globular clusters exhibiting complex stellar populations and large numbers of extreme horizontal branch stars. Our far-UV photometric monitoring of over 100 hot evolved stars has revealed six pulsating subdwarfs with periods ranging from 85 to 149 s and UV amplitudes of 2.0%-6.8%. In the UV color-magnitude diagram of NGC 2808, all six of these stars lie immediately below the canonical horizontal branch, a region populated by the subluminous 'blue-hook' stars. For three of these six pulsators, we also have low-resolution far-UV spectroscopy that is sufficient to broadly constrain their atmospheric abundances and effective temperatures. Curiously, and in contrast to the ? Cen pulsators, the NGC 2808 pulsators do not exhibit the spectroscopic or photometric uniformity one might expect from a well-defined instability strip, although they all fall within a narrow band (0.2 mag) of far-UV luminosity.

  12. Hot-Jupiter Inflation due to Deep Energy Deposition

    E-Print Network [OSTI]

    Ginzburg, Sivan

    2015-01-01T23:59:59.000Z

    Some extrasolar giant planets in close orbits---"hot Jupiters"---exhibit larger radii than that of a passively cooling planet. The extreme irradiation $L_{\\rm eq}$ these hot Jupiters receive from their close in stars creates a thick isothermal layer in their envelopes, which slows down their convective cooling, allowing them to retain their inflated size for longer. This is yet insufficient to explain the observed sizes of the most inflated planets. Some models invoke an additional power source, deposited deep in the planet's envelope. Here we present an analytical model for the cooling of such irradiated, and internally heated gas giants. We show that a power source $L_{\\rm dep}$, deposited at an optical depth $\\tau_{\\rm dep}$, creates an exterior convective region, between optical depths $L_{\\rm eq}/L_{\\rm dep}$ and $\\tau_{\\rm dep}$, beyond which a thicker isothermal layer exists, which in extreme cases may extend to the center of the planet. This convective layer, which occurs only for $L_{\\rm dep}\\tau_{\\r...

  13. Hot filament CVD of boron nitride films

    DOE Patents [OSTI]

    Rye, Robert R. (Albuquerque, NM)

    1992-01-01T23:59:59.000Z

    Using a hot filament (.apprxeq.1400.degree. C.) to activate borazine (B.sub.3 N.sub.3 H.sub.6) molecules for subsequent reaction with a direct line-of-sight substrate, transparent boron ntiride films as thick as 25,000 angstroms are grown for a substrate temperature as low as 100.degree. C. The minimum temperature is determined by radiative heating from the adjacent hot filament. The low temperature BN films show no indication of crystallinity with X-ray diffraction (XRD). X-ray photoelectron spectra (XPS) show the films to have a B:N ratio of 0.97:1 with no other XPS detectable impurities above the 0.5% level. Both Raman and infrared (IR) spectroscopy are characteristic of h-BN with small amounts of hydrogen detected as N-H and B-H bands in the IR spectrum. An important feature of this method is the separation and localization of the thermal activation step at the hot filament from the surface reaction and film growth steps at the substrate surface. This allows both higher temperature thermal activation and lower temperature film growth.

  14. THE ABUNDANCE, ORTHO/PARA RATIO, AND DEUTERATION OF WATER IN THE HIGH-MASS STAR-FORMING REGION NGC 6334 I

    SciTech Connect (OSTI)

    Emprechtinger, M.; Lis, D. C.; Monje, R. R. [California Institute of Technology, Cahill Center for Astronomy and Astrophysics 301-17, Pasadena, CA 91125 (United States)] [California Institute of Technology, Cahill Center for Astronomy and Astrophysics 301-17, Pasadena, CA 91125 (United States); Rolffs, R.; Schilke, P. [Physikalisches Institut, Universitaet zu Koeln, Zuelpicher Str. 77, D-50937 Koeln (Germany)] [Physikalisches Institut, Universitaet zu Koeln, Zuelpicher Str. 77, D-50937 Koeln (Germany); Comito, C. [Max-Planck-Institut fuer Radioastronomie, Auf dem Huegel 69, D-53121 Bonn (Germany)] [Max-Planck-Institut fuer Radioastronomie, Auf dem Huegel 69, D-53121 Bonn (Germany); Ceccarelli, C. [UJF-Grenoble 1/CNRS-INSU, Institut de Planetologie et d'Astrophysique de Grenoble (IPAG) UMR 5274, Grenoble F-38041 (France)] [UJF-Grenoble 1/CNRS-INSU, Institut de Planetologie et d'Astrophysique de Grenoble (IPAG) UMR 5274, Grenoble F-38041 (France); Neufeld, D. A. [Department of Physics and Astronomy Johns Hopkins University, Baltimore, MD 21218 (United States)] [Department of Physics and Astronomy Johns Hopkins University, Baltimore, MD 21218 (United States); Van der Tak, F. F. S., E-mail: dcl@caltech.edu [SRON Netherlands Institute for Space Research and Kapteyn Astronomical Institute, University of Groningen, Groningen (Netherlands)

    2013-03-01T23:59:59.000Z

    We present Herschel/HIFI observations of 30 transitions of water isotopologues toward the high-mass star-forming region NGC 6334 I. The line profiles of H{sup 16} {sub 2}O, H{sup 17} {sub 2}O, H{sup 18} {sub 2}O, and HDO show a complex pattern of emission and absorption components associated with the embedded hot cores, a lower-density envelope, two outflow components, and several foreground clouds, some associated with the NGC 6334 complex, others seen in projection against the strong continuum background of the source. Our analysis reveals an H{sub 2}O ortho/para ratio of 3 {+-} 0.5 in the foreground clouds, as well as the outflow. The water abundance varies from {approx}10{sup -8} in the foreground clouds and the outer envelope to {approx}10{sup -6} in the hot core. The hot core abundance is two orders of magnitude below the chemical model predictions for dense, warm gas, but within the range of values found in other Herschel/HIFI studies of hot cores and hot corinos. This may be related to the relatively low gas and dust temperature ({approx}100 K), or time-dependent effects, resulting in a significant fraction of water molecules still locked up in dust grain mantles. The HDO/H{sub 2}O ratio in NGC 6334 I, {approx}2 Multiplication-Sign 10{sup -4}, is also relatively low, but within the range found in other high-mass star-forming regions.

  15. Renewable Hydrogen (Presentation)

    SciTech Connect (OSTI)

    Remick, R. J.

    2009-11-16T23:59:59.000Z

    Presentation about the United State's dependence on oil, how energy solutions are challenging, and why hydrogen should be considered as a long-term alternative for transportation fuel.

  16. Presentations for Industry

    Broader source: Energy.gov [DOE]

    Learn energy-saving strategies from leading manufacturing companies and energy experts. The presentations are organized below by topic area. In addition, industrial energy managers, utilities, and...

  17. IEA Heat Pump Conference 2011, 16 -19 May 2011, Tokyo, Japan DYNAMIC MODELING OF AN AIR SOURCE HEAT PUMP WATER

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    SOURCE HEAT PUMP WATER HEATER Farouk Fardoun, Associate Professor, Department of Industrial Engineering of an air source heat pump water heater (ASHPWH). The mathematical model consists of submodels of the basic countries such as Lebanon, electric water heaters are often used to generate hot water. Electric water

  18. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Mai, T.

    2012-08-01T23:59:59.000Z

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented in a Power Systems Engineering Research Center webinar on September 4, 2012.

  19. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Hand, M.; Mai, T.

    2012-08-01T23:59:59.000Z

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented in an Union of Concerned Scientists webinar on June 12, 2012.

  20. Interactive Multimedia Presentation Capabilities

    E-Print Network [OSTI]

    Boll, Susanne

    Interactive Multimedia Presentation Capabilities for an Object-Oriented DBMS Susanne Boll, Michael and Mathematics (ERCIM) Workshop Reports, 9th ERCIM Database Research Group Workshop on Multimedia Database Sys, FRANCE, 1996. #12;Interactive Multimedia Presentation Capabilities for an Object-Oriented DBMS Susanne

  1. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Hand, M.

    2012-10-01T23:59:59.000Z

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It is being presented at the Utility Variable-Generation Integration Group Fall Technical Workshop on October 24, 2012.

  2. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Hand, M. M.

    2012-08-01T23:59:59.000Z

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented in a webinar given by the California Energy Commission.

  3. Best Practices for Energy Efficient Cleanrooms: Control of Chilled Water System

    E-Print Network [OSTI]

    supply temperatures may improve the efficiency while meeting cooling requirements for cleanroom for cleanrooms and their adjacent spaces. Chillers 39% Cooling Towers 7% Pumps 17% MUAH + RCU Fans 9% Hot Water;chilled water pumps, secondary loop chilled water pumps, condenser water pumps, and cooling towers

  4. Planning and drilling geothermal energy extraction hole EE-2: a precisely oriented and deviated hole in hot granitic rock

    SciTech Connect (OSTI)

    Helmick, C.; Koczan, S.; Pettitt, R.

    1982-04-01T23:59:59.000Z

    During the preceding work (Phase I) of the Hot Dry Rock (HDR) Geothermal Energy Project at Fenton Hill, two holes were drilled to a depth of nearly 3048 m (10,000 ft) and connected by a vertical hydraulic fracture. In this phase, water was pumped through the underground reservoir for approximately 417 days, producing an energy equivalent of 3 to 5 MW(t). Energy Extraction Hole No. 2 (EE-2) is the first of two deep holes that will be used in the Engineering-Resource Development System (Phase II) of the ongoing HDR Project of the Los Alamos National Laboratory. This phase of the work consists of drilling two parallel boreholes, inclined in their lower, open-hole sections at 35/sup 0/ to the vertical and separated by a vertical distance of 366 m (1200 ft) between the inclined parts of the drill holes. The holes will be connected by a series of vertical, hydraulically produced fractures in the Precambrian granitic rock complex. EE-2 was drilled to a depth of 4660 m (15,289 ft), where the bottom-hole temperature is approximately 320/sup 0/C (608/sup 0/F). Directional drilling techniques were used to control the azimuth and deviation of the hole. Upgrading of the temperature capability of existing hardware, and development of new equipment was necessary to complete the drilling of the hole in the extremely hot, hard, and abrasive granitic formation. The drilling history and the problems with bits, directional tools, tubular goods, cementing, and logging are described. A discussion of the problems and recommendations for overcoming them are also presented.

  5. Mining earth's heat: development of hot-dry-rock geothermal reservoirs

    SciTech Connect (OSTI)

    Pettitt, R.A.; Becker, N.M.

    1983-01-01T23:59:59.000Z

    The energy-extraction concept of the Hot Dry Rock (HDR) Geothermal Program, as initially developed by the Los Alamos National Laboratory, is to mine this heat by creating a man-made reservoir in low-permeability, hot basement rock. This concept has been successfully proven at Fenton Hill in northern New Mexico by drilling two holes to a depth of approximately 3 km (10,000 ft) and a bottom temperature of 200/sup 0/C (392/sup 0/F), then connecting the boreholes with a large-diametervertical hydraulic fracture. Water is circulated down one borehole, heated by the hot rock, and rises up the second borehole to the surface where the heat is extracted and the cooled water is reinjected into the underground circulation loop. This system has operated for a cumulative 416 days during engineering and reservoir testing. An energy equivalent of 3 to 5 MW(t) was produced without adverse environmental problems. During one test, a generator was installed in the circulation loop and produced 60 kW of electricity. A second-generation system, recently drilled to 4.5 km (15,000 ft) and temperatures of 320/sup 0/C (608/sup 0/F), entails creating multiple, parallel fractures between a pair of inclined boreholes. This system should produce 5 to 10 MW(e) for 20 years. Significant contributions to underground technology have been made through the development of the program.

  6. Geothermal Geodatabase for Rico Hot Springs Area and Lemon Hot Springs, Dolores and San Miguel Counties, Colorado

    SciTech Connect (OSTI)

    Zehner, Richard

    2012-11-01T23:59:59.000Z

    Geothermal Geodatabase for Rico Hot Springs Area and Lemon Hot Springs, Dolores and San Miguel Counties, Colorado By Richard ďRickĒ Zehner Geothermal Development Associates Reno Nevada USA 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 4,215,000 South boundary: approximately 4,160,000 West boundary: approximately 216,000 East boundary: approximately 245,000 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 have geochemistry and geothermometry values indicative of high-temperature systems. In addition, the explorationists discovered a very young Climax-style molybdenum porphyry system northeast of Rico, and drilling intersected thermal waters at depth. 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 ESRIís GIS servers. Datasets include: 1. Structural data collected by Flint Geothermal 2. Point information 3. Mines and prospects from the USGS MRDS dataset 4. Results of reconnaissance shallow (2 meter) temperature surveys 5. Air photo lineaments 6. Areas covered by travertine 7. Groundwater geochemistry 8. Land ownership in the Rico area 9. Georeferenced geologic map of the Rico Quadrangle, by Pratt et al. 10. Various 1:24,000 scale topographic maps

  7. Water information bulletin No. 30 geothermal investigations in Idaho

    SciTech Connect (OSTI)

    Mitchell, J.C.; Johnson, L.L.; Anderson, J.E.; Spencer, S.G.; Sullivan, J.F.

    1980-06-01T23:59:59.000Z

    There are 899 thermal water occurrences known in Idaho, including 258 springs and 641 wells having temperatures ranging from 20 to 93/sup 0/C. Fifty-one cities or towns in Idaho containing 30% of the state's population are within 5 km of known geothermal springs or wells. These include several of Idaho's major cities such as Lewiston, Caldwell, Nampa, Boise, Twin Falls, Pocatello, and Idaho Falls. Fourteen sites appear to have subsurface temperatures of 140/sup 0/C or higher according to the several chemical geothermometers applied to thermal water discharges. These include Weiser, Big Creek, White Licks, Vulcan, Roystone, Bonneville, Crane Creek, Cove Creek, Indian Creek, and Deer Creek hot springs, and Raft River, Preston, and Magic Reservoir areas. These sites could be industrial sites, but several are in remote areas away from major transportation and, therefore, would probably be best utilized for electrical power generation using the binary cycle or Magma Max process. Present uses range from space heating to power generation. Six areas are known where commercial greenhouse operations are conducted for growing cut and potted flowers and vegetables. Space heating is substantial in only two places (Boise and Ketchum) although numerous individuals scattered throughout the state make use of thermal water for space heating and private swimming facilities. There are 22 operating resorts using thermal water and two commercial warm-water fish-rearing operations.

  8. PowerPoint Presentation

    Energy Savers [EERE]

    Office May 23, 2013 2 Presentation name Today, ORNL is DOE's largest science and energy laboratory 2 Managed by UT-Battelle for the U.S. Department of Energy 1.65B budget...

  9. GIS TRANSFORMATIONS Conference Presentation

    E-Print Network [OSTI]

    Tobler, Waldo

    GIS TRANSFORMATIONS Conference Presentation Waldo Tobler Geography Department University, line, area, or field phenomena, then the sixteen common classes of transformation are: point -> point (scalar, vector, tensor) data, to obtain eighty distinct possible classes of transformation. The common

  10. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Hand, M. M.

    2012-09-01T23:59:59.000Z

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

  11. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Mai, T.

    2012-10-01T23:59:59.000Z

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

  12. PowerPoint Presentation

    Energy Savers [EERE]

    NATIONAL CHAIRS MEETING Deer Creek State Park, Mt. Sterling, Ohio November 5-7, 2013 U.S. Department of Energy Practices Related to Public Input Presented by Greg Simonton Federal...

  13. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Mai, T.

    2012-11-01T23:59:59.000Z

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

  14. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Mai, T.

    2013-04-01T23:59:59.000Z

    This presentation summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050.

  15. Solar Data Hub (Presentation)

    SciTech Connect (OSTI)

    Orwig, K.

    2011-04-01T23:59:59.000Z

    As power grid integration of renewables becomes ever more important and detailed, the need for a centralized place for solar-related resource data is needed. This presentation describes such a place and website.

  16. 2005 ACERC conference presentations

    SciTech Connect (OSTI)

    NONE

    2005-07-01T23:59:59.000Z

    The presentations are available on the internet for free download. Subjects included NOx and particulate emissions, gasification, and current ACERC and ICES research. The poster papers are also available.

  17. An assessment of presentism

    E-Print Network [OSTI]

    McDaniel, Brannon David

    2004-09-30T23:59:59.000Z

    There is a debate in the philosophy of time over the status of non-present entities. Do these things exist, and if so, what sorts of things are they? Recently, the debate has split into two groups, presentists and ...

  18. Hydrogen Fuel Quality (Presentation)

    SciTech Connect (OSTI)

    Ohi, J.

    2007-05-17T23:59:59.000Z

    Jim Ohi of NREL's presentation on Hydrogen Fuel Quality at the 2007 DOE Hydrogen Program Annual Merit Review and Peer Evaluation on May 15-18, 2007 in Arlington, Virginia.

  19. Renewable Electricity Futures (Presentation)

    SciTech Connect (OSTI)

    Hand, M. M.

    2012-08-01T23:59:59.000Z

    This presentation library summarizes findings of NREL's Renewable Electricity Futures study, published in June 2012. RE Futures investigated the challenges and impacts of achieving very high renewable electricity generation levels in the contiguous United States by 2050. It was presented to the 2012 Western Conference of Public Service Commissioners, during their June, 2012, meeting. The Western Conference of Public Service Commissioners is a regional association within the National Association of Regulatory Utility Commissioners (NARUC).

  20. Blade Testing Trends (Presentation)

    SciTech Connect (OSTI)

    Desmond, M.

    2014-08-01T23:59:59.000Z

    As an invited guest speaker, Michael Desmond presented on NREL's NWTC structural testing methods and capabilities at the 2014 Sandia Blade Workshop held on August 26-28, 2014 in Albuquerque, NM. Although dynamometer and field testing capabilities were mentioned, the presentation focused primarily on wind turbine blade testing, including descriptions and capabilities for accredited certification testing, historical methodology and technology deployment, and current research and development activities.