Sample records for heaters include electric

  1. Is your electric process heater safe?

    SciTech Connect (OSTI)

    Tiras, C.S.

    2000-04-01T23:59:59.000Z

    Over the past 35 years, electric process heaters (EPHs) have been used to heat flowing fluids in different sectors of the energy industry: oil and gas exploration and production, refineries, petrochemical plants, pipeline compression facilities and power-generation plants. EPHs offer several advantages over fired heaters and shell-and-tube exchangers, which have been around for many years, including: smaller size, lighter weight, cleaner operation, lower capital costs, lower maintenance costs, no emissions or leakage, better control and improved safety. However, while many industrial standards have addressed safety concerns of fired heaters and shell-and-tube exchangers (API, TEMA, NFPA, OSHA and NEC), no standards address EPHs. The paper presents a list of questions that plant operators need to ask about the safety of their electric process heaters. The answers are also given.

  2. Covered Product Category: Residential Electric Resistance Water Heaters

    Broader source: Energy.gov [DOE]

    FEMP sets federal efficiency requirements and provides acquisition guidance across a variety of product categories, including residential electric resistance water heaters.

  3. Electric Storage Water Heaters

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed NewcatalystNeutronEnvironmentZIRKLEEFFECTS OFElaineElectric

  4. A Study on the Failure of Industrial Electric Heater

    E-Print Network [OSTI]

    Chyu, M. C.

    The break down mechanism of a cylindrical electric heater is investigated by studying the uneven heating behavior of the heater by measuring the surface temperature variation of the heater when it is subjected to a boundary condition of constant...

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

    E-Print Network [OSTI]

    Johnson, Alissa

    2013-01-01T23:59:59.000Z

    Survey of Electric Storage Tank Water Heater Efficiency andSurvey of Electric Storage Tank Water Heater Efficiency andby electric resistance storage tank water heaters (geysers),

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

    E-Print Network [OSTI]

    Johnson, Alissa

    2013-01-01T23:59:59.000Z

    Fixed Electric Storage Water Heaters, South African Nationalinternational electric storage water heater test proceduresefficiency of electric storage water heaters, and outlines

  7. 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,” J.for Residential Water Heaters, Direct Heating Equipment, andfor Residential Water Heaters, Direct Heating Equipment, and

  8. ELECTRICAL HEATERS FOR THERMO-MECHANICAL TESTS AT THE STRIPA MINE

    E-Print Network [OSTI]

    Burleigh, R.H.

    2010-01-01T23:59:59.000Z

    5.5 Dewatering Pump 6. ELECTRICAL HEATER CONTROL SYSTEMS 6.1water influx ABSTRACT Electrical heaters were installed atcanister) which houses the electrical heater elements; c. d.

  9. High voltage bus and auxiliary heater control system for an electric or hybrid vehicle

    DOE Patents [OSTI]

    Murty, Balarama Vempaty (West Bloomfield, MI)

    2000-01-01T23:59:59.000Z

    A control system for an electric or hybrid electric vehicle includes a vehicle system controller and a control circuit having an electric immersion heater. The heater is electrically connected to the vehicle's high voltage bus and is thermally coupled to a coolant loop containing a heater core for the vehicle's climate control system. The system controller responds to cabin heat requests from the climate control system by generating a pulse width modulated signal that is used by the control circuit to operate the heater at a duty cycle appropriate for the amount of cabin heating requested. The control system also uses the heater to dissipate excess energy produced by an auxiliary power unit and to provide electric braking when regenerative braking is not desirable and manual braking is not necessary. The control system further utilizes the heater to provide a safe discharge of a bank of energy storage capacitors following disconnection of the battery or one of the high voltage connectors used to transmit high voltage operating power to the various vehicle systems. The control circuit includes a high voltage clamping circuit that monitors the voltage on the bus and operates the heater to clamp down the bus voltage when it exceeds a pre-selected maximum voltage. The control system can also be used to phase in operation of the heater when the bus voltage exceeds a lower threshold voltage and can be used to phase out the auxiliary power unit charging and regenerative braking when the battery becomes fully charged.

  10. Electric Water Heater Modeling and Control Strategies for Demand Response

    SciTech Connect (OSTI)

    Diao, Ruisheng; Lu, Shuai; Elizondo, Marcelo A.; Mayhorn, Ebony T.; Zhang, Yu; Samaan, Nader A.

    2012-07-22T23:59:59.000Z

    Abstract— Demand response (DR) has a great potential to provide balancing services at normal operating conditions and emergency support when a power system is subject to disturbances. Effective control strategies can significantly relieve the balancing burden of conventional generators and reduce investment on generation and transmission expansion. This paper is aimed at modeling electric water heaters (EWH) in households and tests their response to control strategies to implement DR. The open-loop response of EWH to a centralized signal is studied by adjusting temperature settings to provide regulation services; and two types of decentralized controllers are tested to provide frequency support following generator trips. EWH models are included in a simulation platform in DIgSILENT to perform electromechanical simulation, which contains 147 households in a distribution feeder. Simulation results show the dependence of EWH response on water heater usage . These results provide insight suggestions on the need of control strategies to achieve better performance for demand response implementation. Index Terms— Centralized control, decentralized control, demand response, electrical water heater, smart grid

  11. Electrical noise characteristics of a doped silicon microcantilever heater-thermometer

    E-Print Network [OSTI]

    King, William P.

    Electrical noise characteristics of a doped silicon microcantilever heater-thermometer Elise A with resistive heater-thermometers,10­13 there is a lack of published reports on the electrical noise silicon heater- thermometer cantilevers.12 However, a key difference is that doped silicon heater-thermometers

  12. Electrically heated particulate filter embedded heater design

    SciTech Connect (OSTI)

    Gonze, Eugene V.; Chapman, Mark R.

    2014-07-01T23:59:59.000Z

    An exhaust system that processes exhaust generated by an engine is provided. The system generally includes a particulate filter (PF) that filters particulates from the exhaust wherein an upstream end of the PF receives exhaust from the engine and wherein an upstream surface of the particulate filter includes machined grooves. A grid of electrically resistive material is inserted into the machined grooves of the exterior upstream surface of the PF and selectively heats exhaust passing through the grid to initiate combustion of particulates within the PF.

  13. Electric Blanket Delivers K.O. to Space Heater During #EnergyFaceoff...

    Office of Environmental Management (EM)

    Electric Blanket Delivers K.O. to Space Heater During EnergyFaceoff Round Three Electric Blanket Delivers K.O. to Space Heater During EnergyFaceoff Round Three November 19, 2014...

  14. Salem Electric- Solar Water Heater Rebate

    Broader source: Energy.gov [DOE]

    Salem Electric residential customers with electric water heating are eligible for a $600 rebate through Salem's Bright Way program. A program brochure with details is available on the program...

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

    SciTech Connect (OSTI)

    Johnson, Alissa; Lutz, James; McNeil, Michael A.; Covary, Theo

    2013-11-13T23:59:59.000Z

    Water heating is a main consumer of energy in households, especially in temperate and cold climates. In South Africa, where hot water is typically provided by electric resistance storage tank water heaters (geysers), water heating energy consumption exceeds cooking, refrigeration, and lighting to be the most consumptive single electric appliance in the home. A recent analysis for the Department of Trade and Industry (DTI) performed by the authors estimated that standing losses from electric geysers contributed over 1,000 kWh to the annual electricity bill for South African households that used them. In order to reduce this burden, the South African government is currently pursuing a programme of Energy Efficiency Standards and Labelling (EES&L) for electric appliances, including geysers. In addition, Eskom has a history of promoting heat pump water heaters (HPWH) through incentive programs, which can further reduce energy consumption. This paper provides a survey of international electric storage water heater test procedures and efficiency metrics which can serve as a reference for comparison with proposed geyser standards and ratings in South Africa. Additionally it provides a sample of efficiency technologies employed to improve the efficiency of electric storage water heaters, and outlines programs to promote adoption of improved efficiency. Finally, it surveys current programs used to promote HPWH and considers the potential for this technology to address peak demand more effectively than reduction of standby losses alone

  16. Warren RECC- Electric Water Heater Rebate

    Broader source: Energy.gov [DOE]

    Warren Rural Electric Cooperative Corporation (RECC) provides service to customers in the south-central Kentucky counties of Ohio, Butler, Grayson, Edmonson, Warren, Simpson, Logan and Barren. Upon...

  17. Water Heaters (Tankless Electric) | Department of Energy

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

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarlyEnergyDepartment ofDepartment of Energy WhileTankless Electric - v1.0.xlsx More Documents &

  18. Adjusting alloy compositions for selected properties in temperature limited heaters

    DOE Patents [OSTI]

    Brady; Michael Patrick (Oak Ridge, TN), Horton, Jr.; Joseph Arno (Oak Ridge, TN), Vitek; John Michael (Oak Ridge, TN)

    2010-03-23T23:59:59.000Z

    Heaters for treating a subsurface formation are described herein. Such heaters can be obtained by using the systems and methods described herein. The heater includes a heater section including iron, cobalt, and carbon. The heater section has a Curie temperature less than a phase transformation temperature. The Curie temperature is at least 740.degree. C. The heater section provides, when time varying current is applied to the heater section, an electrical resistance.

  19. Grouped exposed metal heaters

    DOE Patents [OSTI]

    Vinegar, Harold J. (Bellaire, TX); Coit, William George (Bellaire, TX); Griffin, Peter Terry (Brixham, GB); Hamilton, Paul Taylor (Houston, TX); Hsu, Chia-Fu (Granada Hills, CA); Mason, Stanley Leroy (Allen, TX); Samuel, Allan James (Kular Lumpar, MY); Watkins, Ronnie Wade (Cypress, TX)

    2010-11-09T23:59:59.000Z

    A system for treating a hydrocarbon containing formation is described. The system includes two or more groups of elongated heaters. The group includes two or more heaters placed in two or more openings in the formation. The heaters in the group are electrically coupled below the surface of the formation. The openings include at least partially uncased wellbores in a hydrocarbon layer of the formation. The groups are electrically configured such that current flow through the formation between at least two groups is inhibited. The heaters are configured to provide heat to the formation.

  20. Grouped exposed metal heaters

    DOE Patents [OSTI]

    Vinegar, Harold J. (Bellaire, TX); Coit, William George (Bellaire, TX); Griffin, Peter Terry (Brixham, GB); Hamilton, Paul Taylor (Houston, TX); Hsu, Chia-Fu (Granada Hills, CA); Mason, Stanley Leroy (Allen, TX); Samuel, Allan James (Kular Lumpar, ML); Watkins, Ronnie Wade (Cypress, TX)

    2012-07-31T23:59:59.000Z

    A system for treating a hydrocarbon containing formation is described. The system includes two or more groups of elongated heaters. The group includes two or more heaters placed in two or more openings in the formation. The heaters in the group are electrically coupled below the surface of the formation. The openings include at least partially uncased wellbores in a hydrocarbon layer of the formation. The groups are electrically configured such that current flow through the formation between at least two groups is inhibited. The heaters are configured to provide heat to the formation.

  1. Methods for forming long subsurface heaters

    DOE Patents [OSTI]

    Kim, Dong Sub

    2013-09-17T23:59:59.000Z

    A method for forming a longitudinal subsurface heater includes longitudinally welding an electrically conductive sheath of an insulated conductor heater along at least one longitudinal strip of metal. The longitudinal strip is formed into a tubular around the insulated conductor heater with the insulated conductor heater welded along the inside surface of the tubular.

  2. Tri-County Electric Cooperative- Energy Efficient Water Heater Rebate Program

    Broader source: Energy.gov [DOE]

    Tri-County Electric Cooperative offers a $75 rebate on the purchase of energy-efficient electric water heaters. The rebate is valid for new or replacement units which have an Energy Factor Rating...

  3. Insulated conductor temperature limited heater for subsurface heating coupled in a three-phase WYE configuration

    DOE Patents [OSTI]

    Vinegar, Harold J. (Bellaire, TX); Sandberg, Chester Ledlie (Palo Alto, CA)

    2010-11-09T23:59:59.000Z

    A heating system for a subsurface formation is described. The heating system includes a first heater, a second heater, and a third heater placed in an opening in the subsurface formation. Each heater includes: an electrical conductor; an insulation layer at least partially surrounding the electrical conductor; and an electrically conductive sheath at least partially surrounding the insulation layer. The electrical conductor is electrically coupled to the sheath at a lower end portion of the heater. The lower end portion is the portion of the heater distal from a surface of the opening. The first heater, the second heater, and the third heater are electrically coupled at the lower end portions of the heaters. The first heater, the second heater, and the third heater are configured to be electrically coupled in a three-phase wye configuration.

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

    E-Print Network [OSTI]

    Johnson, Alissa

    2013-01-01T23:59:59.000Z

    history of promoting heat pump water heaters (HPWH) throughwater heaters, and heat pump water heaters are not typical.water heaters, heat pump water heater (HPWH) technology

  5. Clay Electric Cooperative, Inc- Energy Smart Solar Water Heater Rebate Program

    Broader source: Energy.gov [DOE]

    Clay Electric Cooperative (CEC) provides a rebate of $0.01 per BTU output to its residential members when they purchase qualified solar water heaters. This rebate is capped at 60,000 BTUs per...

  6. Gibson Electric Membership Corporation- Residential Energy Efficient Water Heater Loan Program

    Broader source: Energy.gov [DOE]

    Gibson Electric Membership Corporation provides loans to its residential customers to finance new, energy efficient water heaters. The loans are interest-free and can be paid off in as many as 3...

  7. Blue Ridge Mountain Electric Membership Corporation- Water Heater Rebate Program

    Broader source: Energy.gov [DOE]

    Blue Ridge Mountain EMC and TVA, its power supplier, offer the Energy Right and In Home Energy Evaluation programs to qualified members. To qualify for water heater rebates provided by the Energy...

  8. Catalytic combustion of very lean mixtures in a reverse flow reactor using an internal electrical heater

    SciTech Connect (OSTI)

    Cunill, F.; Beld, L. van de; Westerterp, K.R. [Univ. of Twente, Enschede (Netherlands)] [Univ. of Twente, Enschede (Netherlands)

    1997-10-01T23:59:59.000Z

    An experimental study of the reverse flow reactor, equipped with an internal electrical heater, for the autothermal combustion of very dilute organic compounds, in particular ethene, propane, and their mixtures, has been carried out. The influence of several operating parameters like electrical heater power, cycle period, chemical character, and concentration of the pollutants on the maximum temperature and on the shape of temperature profiles in the stationary state is discussed. Experimental results show that an internal electrical heater can be successfully used to oxidize completely very lean mixtures which would not be able to maintain an autothermal process only by themselves. The predictions with a heterogeneous one-dimensional model without using fit parameters show a good agreement with experiments except for critical situations.

  9. Zoned electrical heater arranged in spaced relationship from particulate filter

    DOE Patents [OSTI]

    Gonze, Eugene V [Pinckney, MI

    2011-11-15T23:59:59.000Z

    A system comprises a particulate matter (PM) filter that comprises an upstream end for receiving exhaust gas and a downstream end. A zoned heater is arranged spaced from the upstream end and comprises N zones, where N is an integer greater than one, wherein each of the N zones comprises M sub-zones, where M is an integer greater than one. A control module selectively activates at least a selected one of the N zones to initiate regeneration in downstream portions of the PM filter from the one of the N zones and deactivates non-selected ones of the N zones.

  10. Linn County Rural Electric Cooperative- Solar Water Heater Rebate Program

    Broader source: Energy.gov [DOE]

    Linn County Rural Electric Cooperative Association (Linn County RECA) is a member-owned cooperative. To encourage energy efficiency, Linn County offers a number of rebates to commercial,...

  11. Electric Power Monthly, August 1990. [Glossary included

    SciTech Connect (OSTI)

    Not Available

    1990-11-29T23:59:59.000Z

    The Electric Power Monthly (EPM) presents monthly summaries of electric utility statistics at the national, Census division, and State level. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. Data includes generation by energy source (coal, oil, gas, hydroelectric, and nuclear); generation by region; consumption of fossil fuels for power generation; sales of electric power, cost data; and unusual occurrences. A glossary is included.

  12. Parallel heater system for subsurface formations

    DOE Patents [OSTI]

    Harris, Christopher Kelvin (Houston, TX); Karanikas, John Michael (Houston, TX); Nguyen, Scott Vinh (Houston, TX)

    2011-10-25T23:59:59.000Z

    A heating system for a subsurface formation is disclosed. The system includes a plurality of substantially horizontally oriented or inclined heater sections located in a hydrocarbon containing layer in the formation. At least a portion of two of the heater sections are substantially parallel to each other. The ends of at least two of the heater sections in the layer are electrically coupled to a substantially horizontal, or inclined, electrical conductor oriented substantially perpendicular to the ends of the at least two heater sections.

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

    E-Print Network [OSTI]

    Franco, Victor

    2011-01-01T23:59:59.000Z

    an electric resistance storage water heater (ESWH) with tankof total electric storage water heater shipments in the nextelectric resistance storage water heaters. The rated storage

  14. Electric power monthly, September 1990. [Glossary included

    SciTech Connect (OSTI)

    Not Available

    1990-12-17T23:59:59.000Z

    The purpose of this report is to provide energy decision makers with accurate and timely information that may be used in forming various perspectives on electric issues. The power plants considered include coal, petroleum, natural gas, hydroelectric, and nuclear power plants. Data are presented for power generation, fuel consumption, fuel receipts and cost, sales of electricity, and unusual occurrences at power plants. Data are compared at the national, Census division, and state levels. 4 figs., 52 tabs. (CK)

  15. Modeling of Electric Water Heaters for Demand Response: A Baseline PDE Model

    SciTech Connect (OSTI)

    Xu, Zhijie; Diao, Ruisheng; Lu, Shuai; Lian, Jianming; Zhang, Yu

    2014-09-05T23:59:59.000Z

    Demand response (DR)control can effectively relieve balancing and frequency regulation burdens on conventional generators, facilitate integrating more renewable energy, and reduce generation and transmission investments needed to meet peak demands. Electric water heaters (EWHs) have a great potential in implementing DR control strategies because: (a) the EWH power consumption has a high correlation with daily load patterns; (b) they constitute a significant percentage of domestic electrical load; (c) the heating element is a resistor, without reactive power consumption; and (d) they can be used as energy storage devices when needed. Accurately modeling the dynamic behavior of EWHs is essential for designing DR controls. Various water heater models, simplified to different extents, were published in the literature; however, few of them were validated against field measurements, which may result in inaccuracy when implementing DR controls. In this paper, a partial differential equation physics-based model, developed to capture detailed temperature profiles at different tank locations, is validated against field test data for more than 10 days. The developed model shows very good performance in capturing water thermal dynamics for benchmark testing purposes

  16. Temperature limited heater utilizing non-ferromagnetic conductor

    DOE Patents [OSTI]

    Vinegar; Harold J. (Bellaire, TX), Harris; Christopher Kelvin (Houston, TX)

    2012-07-17T23:59:59.000Z

    A heater is described. The heater includes a ferromagnetic conductor and an electrical conductor electrically coupled to the ferromagnetic conductor. The ferromagnetic conductor is positioned relative to the electrical conductor such that an electromagnetic field produced by time-varying current flow in the ferromagnetic conductor confines a majority of the flow of the electrical current to the electrical conductor at temperatures below or near a selected temperature.

  17. Water heater control module

    DOE Patents [OSTI]

    Hammerstrom, Donald J

    2013-11-26T23:59:59.000Z

    An advanced electric water heater control system that interfaces with a high temperature cut-off thermostat and an upper regulating thermostat. The system includes a control module that is electrically connected to the high-temperature cut-off thermostat and the upper regulating thermostat. The control module includes a switch to open or close the high-temperature cut-off thermostat and the upper regulating thermostat. The control module further includes circuitry configured to control said switch in response to a signal selected from the group of an autonomous signal, a communicated signal, and combinations thereof.

  18. Temperature limited heater with a conduit substantially electrically isolated from the formation

    DOE Patents [OSTI]

    Vinegar, Harold J. (Bellaire, TX); Sandberg, Chester Ledlie (Palo Alto, CA)

    2009-07-14T23:59:59.000Z

    A system for heating a hydrocarbon containing formation is described. A conduit may be located in an opening in the formation. The conduit includes ferromagnetic material. An electrical conductor is positioned inside the conduit, and is electrically coupled to the conduit at or near an end portion of the conduit so that the electrical conductor and the conduit are electrically coupled in series. Electrical current flows in the electrical conductor in a substantially opposite direction to electrical current flow in the conduit during application of electrical current to the system. The flow of electrons is substantially confined to the inside of the conduit by the electromagnetic field generated from electrical current flow in the electrical conductor so that the outside surface of the conduit is at or near substantially zero potential at 25.degree. C. The conduit may generate heat and heat the formation during application of electrical current.

  19. Subsurface connection methods for subsurface heaters

    DOE Patents [OSTI]

    Vinegar, Harold J. (Bellaire, TX); Bass, Ronald Marshall (Houston, TX); Kim, Dong Sub (Sugar Land, TX); Mason, Stanley Leroy (Allen, TX); Stegemeier, George Leo (Houston, TX); Keltner, Thomas Joseph (Spring, TX); Carl, Jr., Frederick Gordon (Houston, TX)

    2010-12-28T23:59:59.000Z

    A system for heating a subsurface formation is described. The system includes a first elongated heater in a first opening in the formation. The first elongated heater includes an exposed metal section in a portion of the first opening. The portion is below a layer of the formation to be heated. The exposed metal section is exposed to the formation. A second elongated heater is in a second opening in the formation. The second opening connects to the first opening at or near the portion of the first opening below the layer to be heated. At least a portion of an exposed metal section of the second elongated heater is electrically coupled to at least a portion of the exposed metal section of the first elongated heater in the portion of the first opening below the layer to be heated.

  20. Energy Efficiency Design Options for Residential Water Heaters: Economic Impacts on Consumers

    E-Print Network [OSTI]

    Lekov, Alex

    2011-01-01T23:59:59.000Z

    for gas and electric storage water heaters. It presents theboth gas and electric storage water heaters, and heat pumpliters) for gas storage water heaters and a maximum input

  1. The LBNL Water Heater Retail Price Database

    E-Print Network [OSTI]

    Lekov, Alex; Glover, Julie; Lutz, Jim

    2000-01-01T23:59:59.000Z

    display the distribution of water heater models by fee typeelectric and gas-fired water heaters, respectively. DeliveryDistribution of Electric Water Heaters by Fee Type Figure B-

  2. Multi-step heater deployment in a subsurface formation

    DOE Patents [OSTI]

    Mason, Stanley Leroy (Allen, TX)

    2012-04-03T23:59:59.000Z

    A method for installing a horizontal or inclined subsurface heater includes placing a heating section of a heater in a horizontal or inclined section of a wellbore with an installation tool. The tool is uncoupled from the heating section. A lead in section is mechanically and electrically coupled to the heating section of the heater. The lead-in section is located in an angled or vertical section of the wellbore.

  3. Three-phase heaters with common overburden sections for heating subsurface formations

    DOE Patents [OSTI]

    Vinegar, Harold J. (Bellaire, TX)

    2012-02-14T23:59:59.000Z

    A heating system for a subsurface formation is described. The heating system includes three substantially u-shaped heaters with first end portions of the heaters being electrically coupled to a single, three-phase wye transformer and second end portions of the heaters being electrically coupled to each other and/or to ground. The three heaters may enter the formation through a first common wellbore and exit the formation through a second common wellbore so that the magnetic fields of the three heaters at least partially cancel out in the common wellbores.

  4. Economics of residential gas furnaces and water heaters in US new construction market

    E-Print Network [OSTI]

    Lekov, Alex B.; Franco, Victor H.; Wong-Parodi, Gabrielle; McMahon, James E.; Chan, Peter

    2010-01-01T23:59:59.000Z

    al. (2004). Heat pump water heater technology: Experienceslarger market for heat pump water heaters (US Department offurnace or heat pump and electric water heater (26%; US

  5. Measure Guideline: Transitioning to a Tankless Water Heater

    SciTech Connect (OSTI)

    Brozyna, K.; Rapport, A.

    2012-09-01T23:59:59.000Z

    This Measure Guideline provides information to help residential builders and retrofitters with the design, specification, selection, implementation, installation, and maintenance issues of transitioning from tank-type water heaters to tankless water heaters. The report compares the differences between tankless and tank-type water heaters, highlighting the energy savings that can be realized by adopting tankless water heaters over tank-type water heaters. Selection criteria and risks discussed include unit sizing and location, water distribution system, plumbing line length and diameter, water quality, electrical backup, and code issues. Cost and performance data are provided for various types of tankless and tank-type water heaters, both natural gas fired and electric. Also considered are interactions between the tankless water heater and other functional elements of a house, such as cold water supply and low-flow devices. Operating costs and energy use of water distribution systems for single- and two-story houses are provided, along with discussion of the various types of distribution systems that can be used with tankless water heaters. Finally, details to prepare for proper installation of a tankless water heater are described.

  6. Review of experiments to evaluate the ability of electrical heater rods to simulate nuclear fuel rod behavior during postulated loss-of-coolant accidents in light water reactors

    SciTech Connect (OSTI)

    McPherson, G D; Tolman, E L

    1980-01-01T23:59:59.000Z

    Issues related to using electrical fuel rod simulators to simulate nuclear fuel rod behavior during postulated loss-of-coolant accident (LOCA) conditions in light water reactors are summarized. Experimental programs which will provide a data base for comparing electrical heater rod and nuclear fuel rod LOCA responses are reviewed.

  7. Energy Efficiency Design Options for Residential Water Heaters: Economic Impacts on Consumers

    SciTech Connect (OSTI)

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

    2010-11-24T23:59:59.000Z

    The U.S. Department of Energy (DOE) recently completed a rulemaking process in which it amended the existing energy efficiency standards for residential water heaters. A key factor in DOE?s consideration of new standards is the economic impacts on consumers. Determining such impacts requires a comparison of the additional first cost of energy efficiency design options with the savings in operating costs. This paper describes the method used to conduct the life-cycle cost (LCC) and payback period analysis for gas and electric storage water heaters. It presents the estimated change in LCC associated with more energy-efficient equipment, including heat pump electric water heaters and condensing gas water heaters, for a representative sample of U.S. homes. The study included a detailed accounting of installation costs for the considered design options, with a focus on approaches for accommodating the larger dimensions of more efficient water heaters. For heat pump water heaters, the study also considered airflow requirements, venting issues, and the impact of these products on the indoor environment. The results indicate that efficiency improvement relative to the baseline design reduces the LCC in the majority of homes for both gas and electric storage water heaters, and heat pump electric water heaters and condensing gas water heaters provide a lower LCC for homes with large rated volume water heaters.

  8. DSM Electricity Savings Potential in the Buildings Sector in APP Countries

    E-Print Network [OSTI]

    McNeil, MIchael

    2011-01-01T23:59:59.000Z

    Mains Pressure Electric Storage Water Heaters Small MainsElectric Storage Water Heaters (water heaters. The objective is to

  9. DSM Electricity Savings Potential in the Buildings Sector in APP Countries

    E-Print Network [OSTI]

    McNeil, MIchael

    2011-01-01T23:59:59.000Z

    Mains Pressure Electric Storage Water Heaters Small MainsPressure Electric Storage Water Heaters (Storage & instantaneous water heaters Storage tanks

  10. Subsurface heaters with low sulfidation rates

    DOE Patents [OSTI]

    John, Randy Carl; Vinegar, Harold J

    2013-12-10T23:59:59.000Z

    A system for heating a hydrocarbon containing formation includes a heater having an elongated ferromagnetic metal heater section. The heater is located in an opening in a formation. The heater section is configured to heat the hydrocarbon containing formation. The exposed ferromagnetic metal has a sulfidation rate that goes down with increasing temperature of the heater, when the heater is in a selected temperature range.

  11. Residential Electricity Demand in China -- Can Efficiency Reverse the Growth?

    E-Print Network [OSTI]

    Letschert, Virginie

    2010-01-01T23:59:59.000Z

    Domestic Electric Storage Water Heater (DESWH) Test Methodsfans, washing machines, water heaters and space heaters.and Space Heating Water heater intensities and electric

  12. Economic Analysis of Solar Water Heaters in GuangZhou

    E-Print Network [OSTI]

    Wang, Y.; Zhao, L.

    2006-01-01T23:59:59.000Z

    ,gas water heater and electrical water heater in Guangzhou was compared and the Annual Cost Calculation Method (ACCM)was introduced to explain the remarkable economic benefits. The social benefits of the solar water heater were introduced from a scientific...

  13. Immersible solar heater for fluids

    DOE Patents [OSTI]

    Kronberg, James W. (Aiken, SC)

    1995-01-01T23:59:59.000Z

    An immersible solar heater comprising a light-absorbing panel attached to a frame for absorbing heat energy from the light and transferring the absorbed heat energy directly to the fluid in which the heater is immersed. The heater can be used to heat a swimming pool, for example, and is held in position and at a preselected angle by a system of floats, weights and tethers so that the panel can operate efficiently. A skid can be used in one embodiment to prevent lateral movement of the heater along the bottom of the pool. Alternative embodiments include different arrangements of the weights, floats and tethers and methods for making the heater.

  14. Explosives tester with heater

    DOE Patents [OSTI]

    Del Eckels, Joel (Livermore, CA); Nunes, Peter J. (Danville, CA); Simpson, Randall L. (Livermore, CA); Whipple, Richard E. (Livermore, CA); Carter, J. Chance (Livermore, CA); Reynolds, John G. (San Ramon, CA)

    2010-08-10T23:59:59.000Z

    An inspection tester system for testing for explosives. The tester includes a body and a swab unit adapted to be removeably connected to the body. At least one reagent holder and dispenser is operatively connected to the body. The reagent holder and dispenser contains an explosives detecting reagent and is positioned to deliver the explosives detecting reagent to the swab unit. A heater is operatively connected to the body and the swab unit is adapted to be operatively connected to the heater.

  15. 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

    gas and electric storage water heaters, heat-pump watersmall gas-fired storage water heaters with a large burner.such as electric storage water heaters, the comparison of

  16. Residential Electricity Demand in China -- Can Efficiency Reverse the Growth?

    E-Print Network [OSTI]

    Letschert, Virginie

    2010-01-01T23:59:59.000Z

    Domestic Electric Storage Water Heater (DESWH) Test Methodsbuilt for electric storage water heaters and heat pumps asthat electric storage tank water heaters will be replaced

  17. Convective heater

    DOE Patents [OSTI]

    Thorogood, Robert M. (Macungie, PA)

    1986-01-01T23:59:59.000Z

    A convective heater for heating fluids such as a coal slurry is constructed of a tube circuit arrangement which obtains an optimum temperature distribution to give a relatively constant slurry film temperature. The heater is constructed to divide the heating gas flow into two equal paths and the tube circuit for the slurry is arranged to provide a mixed flow configuration whereby the slurry passes through the two heating gas paths in successive co-current, counter-current and co-current flow relative to the heating gas flow. This arrangement permits the utilization of minimum surface area for a given maximum film temperature of the slurry consistent with the prevention of coke formation.

  18. Convective heater

    DOE Patents [OSTI]

    Thorogood, R.M.

    1983-12-27T23:59:59.000Z

    A convective heater for heating fluids such as a coal slurry is constructed of a tube circuit arrangement which obtains an optimum temperature distribution to give a relatively constant slurry film temperature. The heater is constructed to divide the heating gas flow into two equal paths and the tube circuit for the slurry is arranged to provide a mixed flow configuration whereby the slurry passes through the two heating gas paths in successive co-current, counter-current and co-current flow relative to the heating gas flow. This arrangement permits the utilization of minimum surface area for a given maximum film temperature of the slurry consistent with the prevention of coke formation. 14 figs.

  19. 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.

  20. Economics of residential gas furnaces and water heaters in United States new construction market

    E-Print Network [OSTI]

    Lekov, Alex B.

    2010-01-01T23:59:59.000Z

    and F. Southworh. (2004). Heat pump water heater technology:a larger market for heat pump water heaters (U.S. Departmentfurnace or heat pump and electric water heater (26%). (U.S.

  1. Immersible solar heater for fluids

    DOE Patents [OSTI]

    Kronberg, J.W.

    1995-07-11T23:59:59.000Z

    An immersible solar heater is described comprising a light-absorbing panel attached to a frame for absorbing heat energy from the light and transferring the absorbed heat energy directly to the fluid in which the heater is immersed. The heater can be used to heat a swimming pool, for example, and is held in position and at a preselected angle by a system of floats, weights and tethers so that the panel can operate efficiently. A skid can be used in one embodiment to prevent lateral movement of the heater along the bottom of the pool. Alternative embodiments include different arrangements of the weights, floats and tethers and methods for making the heater. 11 figs.

  2. Immersible solar heater for fluids

    DOE Patents [OSTI]

    Hazen, T.C.; Fliermans, C.B.

    1994-01-01T23:59:59.000Z

    An immersible solar heater is described comprising a light-absorbing panel attached to a frame for absorbing heat energy from the light and transferring the absorbed heat energy directly to the fluid in which the heater is immersed. The heater can be used to heat a swimming pool, for example, and is held in position and at a preselected angle by a system of floats, weights and tethers so that the panel can operate efficiently. A skid can be used in one embodiment to prevent lateral movement of the heater along the bottom of the pool. Alternative embodiments include different arrangements of the weights, floats and tethers and methods for making the heater.

  3. Analysis of Michigan's demand-side electricity resources in the residential sector: Volume 3, End-use studies: Revised final report

    SciTech Connect (OSTI)

    Krause, F.; Brown, J.; Connell, D.; DuPont, P.; Greely, K.; Meal, M.; Meier, A.; Mills, E.; Nordman, B.

    1988-04-01T23:59:59.000Z

    This volume of the ''Analysis of Michigan's Demand-Side Electricity Resources in the Residential Sector'' contains end-use studies on various household appliances including: refrigerators, freezers, lighting systems, water heaters, air conditioners, space heaters, and heat pumps. (JEF)

  4. Varying properties along lengths of temperature limited heaters

    DOE Patents [OSTI]

    Vinegar, Harold J. (Bellaire, TX); Xie, Xueying (Houston, TX); Miller, David Scott (Katy, TX); Ginestra, Jean Charles (Richmond, TX)

    2011-07-26T23:59:59.000Z

    A system for heating a subsurface formation is described. The system includes an elongated heater in an opening in the formation. The elongated heater includes two or more portions along the length of the heater that have different power outputs. At least one portion of the elongated heater includes at least one temperature limited portion with at least one selected temperature at which the portion provides a reduced heat output. The heater is configured to provide heat to the formation with the different power outputs. The heater is configured so that the heater heats one or more portions of the formation at one or more selected heating rates.

  5. HVAC vs. Space Heaters: Which is More Efficient? | Department...

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

    Let's start with a basic tenet: electric space heaters are less efficient than HVAC systems. I cannot replace my heating system with room heaters if I want to save money....

  6. Nuclear Plant Feedwater Heater Handbook. Volume 1. Primer. Final report

    SciTech Connect (OSTI)

    Bell, R.J.; Wells, T.G. Jr.

    1985-06-01T23:59:59.000Z

    This document is the first part of a three volume handbook covering closed feedwater heaters for electric power generating plants. This volume is a primer to the subject of feedwater heaters and their integration into the plant. 24 refs.

  7. Burbank Water and Power- Solar Water Heater Rebate Program (California)

    Broader source: Energy.gov [DOE]

    Burbank Water and Power is providing incentives for the purchase of solar water heaters. Incentives are only available to residential customers with electric water heaters. There is a limit of one...

  8. Heater head for stirling engine

    DOE Patents [OSTI]

    Corey, John A. (R.D. #2, Box 101 E, North Troy, NY 12182)

    1985-07-09T23:59:59.000Z

    A monolithic heater head assembly which augments cast fins with ceramic inserts which narrow the flow of combustion gas and obtains high thermal effectiveness with the assembly including an improved flange design which gives greater durability and reduced conduction loss.

  9. THE EFFECT OF LOCATION OF THE PREDICTED PERFORMANCE OF A HEAT PUMP WATER HEATER

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    #12;THE EFFECT OF LOCATION OF THE PREDICTED PERFORMANCE OF A HEAT PUMP WATER HEATER Laboratory testing and field testing have shown that a heat pump water heater (HPWH) uses about half the electrical energy input that an electric resistance water heater does. However, since the heat pump water heater

  10. Energy Savings and Breakeven Cost for Residential Heat Pump Water Heaters in the United States

    SciTech Connect (OSTI)

    Maguire, J.; Burch, J.; Merrigan, T.; Ong, S.

    2013-07-01T23:59:59.000Z

    Heat pump water heaters (HPWHs) have recently reemerged in the U.S. residential water heating market and have the potential to provide homeowners with significant energy savings. However, there are questions as to the actual performance and energy savings potential of these units, in particular in regards to the heat pump's performance in unconditioned space and the impact of the heat pump on space heating and cooling loads when it is located in conditioned space. To help answer these questions, simulations were performed of a HPWH in both conditioned and unconditioned space at over 900 locations across the continental United States and Hawaii. Simulations included a Building America benchmark home so that any interaction between the HPWH and the home's HVAC equipment could be captured. Comparisons were performed to typical gas and electric water heaters to determine the energy savings potential and cost effectiveness of a HPWH relative to these technologies. HPWHs were found to have a significant source energy savings potential when replacing typical electric water heaters, but only saved source energy relative to gas water heater in the most favorable installation locations in the southern US. When replacing an electric water heater, the HPWH is likely to break even in California, the southern US, and parts of the northeast in most situations. However, the HPWH will only break even when replacing a gas water heater in a few southern states.

  11. Joint used for coupling long heaters

    DOE Patents [OSTI]

    Menottie, James Louis

    2013-02-26T23:59:59.000Z

    Systems for coupling ends of elongated heaters and methods of using such systems to treat a subsurface formation are described herein. A system may include two elongated heaters with an end portion of one heater abutted or near to an end portion of the other heater and a core coupling material. The core coupling material may extend between the two elongated heaters. The elongated heaters may include cores and at least one conductor substantially concentrically surrounds the cores. The cores may have a lower melting point than the conductors. At least one end portion of the conductor may have a beveled edge. The gap formed by the beveled edge may be filled with a coupling material for coupling the one or more conductors. One end portion of at least one core may have a recessed opening and the core coupling material may be partially inside the recessed opening.

  12. The Boom of Electricity Demand in the Residential Sector in the Developing World and the Potential for Energy Efficiency

    E-Print Network [OSTI]

    Letschert, Virginie

    2010-01-01T23:59:59.000Z

    Domestic Electric Storage Water Heater (DESWH) Test Methodsby products 5 , and water heaters. Appliance diffusion isor endorsement levels. Water Heaters The share of electric

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

    SciTech Connect (OSTI)

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

    2014-06-01T23:59:59.000Z

    This paper explores the laboratory performance of five integrated Heat Pump Water Heaters (HPWHs) across a wide range of operating conditions representative of US climate regions. HPWHs are expected to provide significant energy savings in certain climate zones when compared to typical electric resistance water heaters. Results show that this technology is a viable option in most climates, but differences in control schemes and design features impact the performance of the units tested. Tests were conducted to map heat pump performance across the operating range and to determine the logic used to control the heat pump and the backup electric heaters. Other tests performed include two unique draw profile tests, reduced air flow performance tests and the standard DOE rating tests. The results from all these tests are presented here for all five units tested. The results of these tests will be used to improve the EnergyPlus heat pump water heater for use in BEopt(tm) whole-house building simulations.

  14. Selecting a new water heater

    SciTech Connect (OSTI)

    NONE

    1995-03-01T23:59:59.000Z

    This fact sheet describes the types of water heaters available (storage water heaters, demand water heaters, heat pump water heaters, tankless coil and indirect water heaters, and solar water heaters). The criteria for selection are discussed. These are capacity, efficiency rating, and cost. A resource list is provided for further information.

  15. Covered Product Category: Residential Electric Resistance Water...

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

    Electric Resistance Water Heaters Covered Product Category: Residential Electric Resistance Water Heaters The Federal Energy Management Program (FEMP) sets Federal efficiency...

  16. Dampers for Natural Draft Heaters: Technical Report

    E-Print Network [OSTI]

    Lutz, James D.

    2009-01-01T23:59:59.000Z

    Storage Water Heater.draft gas-fired storage water heater. The flue damper waswater heater, gas-fired storage water heater, flue damper,

  17. Performance testing and Bayesian Reliability Analysis of small diameter, high power electric heaters for the simulation of nuclear fuel rod temperatures

    E-Print Network [OSTI]

    O'Kelly, David Sean

    2012-06-07T23:59:59.000Z

    proposed full test using prototypic mixed-oxide fuel (MOX) containing plutonium from converted nuclear weapons. Bayesian reliability analysis methods were used to determine the expected heater failure rate because of the expected short test duration...

  18. Space Heaters The University recognizes that individuals have different levels of comfort associated with

    E-Print Network [OSTI]

    de Lijser, Peter

    for space heating. 14. Do not use space heaters or any other electric appliance around water. 15Space Heaters The University recognizes that individuals have different levels of comfort associated with temperature and heat. The use of electric space heaters as a temporary measure is permitted

  19. Variable power distribution for zoned regeneration of an electrically heated particulate filter

    DOE Patents [OSTI]

    Bhatia, Garima [Bangalore, IN; Gonze, Eugene V [Pinckney, MI

    2012-04-03T23:59:59.000Z

    A system includes a particulate matter (PM) filter with multiple zones, an electric heater and a control module. The electrical heater includes heater segments, which each correspond with a respective one of the zones. The electrical heater is arranged upstream from and is proximate with the PM filter. The control module selectively applies a first energy level to a first one of the zones via a first one of the heater segments to initiate regeneration in the first zone. The control module also selectively applies a second energy level that is less than the first energy level to a second one of the zones via a second one of the heater segments to initiate regeneration in the second zone.

  20. E-Print Network 3.0 - air heater duct Sample Search Results

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

    15542 Fuel-Fired Radiant Heaters - RESERVED 15543 Fuel-Fired Unit Heaters... Electric Heating Cables -RESERVED 15785 Air-to-Air Energy Recovery Units - RESERVED 15815 Metal Ducts...

  1. Nuclear Plant Feedwater Heater Handbook. Volume 3. Operation and maintenance guidelines. Final report

    SciTech Connect (OSTI)

    Bell, R.J.; Hardy, C.D. Jr.

    1985-06-01T23:59:59.000Z

    This document is the third part of a three-volume handbook covering closed feedwater heaters for nuclear electric power generating plants. This third volume covers the operation and maintenance of closed feedwater heaters. 11 refs., 23 figs., 5 tabs.

  2. Electrical machines and assemblies including a yokeless stator with modular lamination stacks

    DOE Patents [OSTI]

    Qu, Ronghai; Jansen, Patrick Lee; Bagepalli, Bharat Sampathkumar; Carl Jr., Ralph James; Gadre, Aniruddha Dattatraya; Lopez, Fulton Jose

    2010-04-06T23:59:59.000Z

    An electrical machine includes a rotor with an inner rotor portion and an outer rotor portion, and a double-sided yokeless stator. The yokeless stator includes modular lamination stacks and is configured for radial magnetic flux flow. The double-sided yokeless stator is concentrically disposed between the inner rotor portion and the outer rotor portion of the electrical machine. Examples of particularly useful embodiments for the electrical machine include wind turbine generators, ship propulsion motors, switch reluctance machines and double-sided synchronous machines.

  3. Gas Water Heater Energy Losses

    E-Print Network [OSTI]

    Biermayer, Peter

    2012-01-01T23:59:59.000Z

    Input Screens SCREEN D1: WATER HEATER SPECIFICATIONS 1. Tankthe house. Supply pipe – this is the water heater inlet pipewith refills the water heater with cold water Note: The TANK

  4. Gas Water Heater Energy Losses

    E-Print Network [OSTI]

    Biermayer, Peter

    2012-01-01T23:59:59.000Z

    residential gas-fired storage water heater was modeled underin a typical residential storage water heater that meets thereplace a gas-fired storage water heater with a conventional

  5. Welding shield for coupling heaters

    DOE Patents [OSTI]

    Menotti, James Louis (Dickinson, TX)

    2010-03-09T23:59:59.000Z

    Systems for coupling end portions of two elongated heater portions and methods of using such systems to treat a subsurface formation are described herein. A system may include a holding system configured to hold end portions of the two elongated heater portions so that the end portions are abutted together or located near each other; a shield for enclosing the end portions, and one or more inert gas inlets configured to provide at least one inert gas to flush the system with inert gas during welding of the end portions. The shield may be configured to inhibit oxidation during welding that joins the end portions together. The shield may include a hinged door that, when closed, is configured to at least partially isolate the interior of the shield from the atmosphere. The hinged door, when open, is configured to allow access to the interior of the shield.

  6. Molded polymer solar water heater

    DOE Patents [OSTI]

    Bourne, Richard C.; Lee, Brian E.

    2004-11-09T23:59:59.000Z

    A solar water heater has a rotationally-molded water box and a glazing subassembly disposed over the water box that enhances solar gain and provides an insulating air space between the outside environment and the water box. When used with a pressurized water system, an internal heat exchanger is integrally molded within the water box. Mounting and connection hardware is included to provide a rapid and secure method of installation.

  7. Elevated exhaust temperature, zoned, electrically-heated particulate matter filter

    DOE Patents [OSTI]

    Gonze, Eugene V [Pinckney, MI; Bhatia, Garima [Bangalore, IN

    2012-04-17T23:59:59.000Z

    A system includes an electrical heater and a particulate matter (PM) filter that is arranged one of adjacent to and in contact with the electrical heater. A control module selectively increases an exhaust gas temperature of an engine to a first temperature and that initiates regeneration of the PM filter using the electrical heater while the exhaust gas temperature is above the first temperature. The first temperature is greater than a maximum exhaust gas temperature at the PM filter during non-regeneration operation and is less than an oxidation temperature of the PM.

  8. Residential Electricity Demand in China -- Can Efficiency Reverse the Growth?

    E-Print Network [OSTI]

    Letschert, Virginie

    2010-01-01T23:59:59.000Z

    replaced with heat pump water heaters (efficiency of 250%).electric storage water heaters and heat pumps as shown infor Electric Water Heaters and Heat Pumps End Use Elec WH HP

  9. Integrated exhaust and electrically heated particulate filter regeneration systems

    DOE Patents [OSTI]

    Gonze, Eugene V.; Paratore, Jr., Michael J.

    2013-01-08T23:59:59.000Z

    A system includes a particulate matter (PM) filter that includes multiple zones. An electrical heater includes heater segments that are associated with respective ones of the zones. The electrical heater is arranged upstream from and proximate with the PM filter. A post-fuel injection system injects fuel into at least one of a cylinder of an engine and an exhaust system. A control module is configured to operate in a first mode that includes activating the electrical heater to heat exhaust of the engine. The control module is also configured to operate in a second mode that includes activating the post-injection system to heat the exhaust. The control module selectively operates in at least one of the first mode and the second mode.

  10. Assessment of radioisotope heaters for remote terrestrial applications

    SciTech Connect (OSTI)

    Uherka, K.L.

    1987-05-01T23:59:59.000Z

    This paper examines the feasibility of using radioisotope byproducts for special heating applications at remote sites in Alaska and other cold regions. The investigation included assessment of candidate radioisotope materials for heater applications, identification of the most promising cold region applications, evaluation of key technical issues and implementation constraints, and development of conceptual heater designs for candidate applications. Strontium-90 (Sr-90) was selected as the most viable fuel for radioisotopic heaters used in terrestrial applications. Opportunities for the application of radioisotopic heaters were determined through site visits to representative Alaska installations. Candidate heater applications included water storage tanks, sludge digesters, sewage lagoons, water piping systems, well-head pumping stations, emergency shelters, and fuel storage tank deicers. Radioisotopic heaters for water storage tank freeze-up protection and for enhancement of biological waste treatment processes at remote sites were selected as the most promising applications.

  11. Strong permanent magnets provide a backbone technology required many products, including computers, electric cars, and

    E-Print Network [OSTI]

    McQuade, D. Tyler

    Strong permanent magnets provide a backbone technology required many products, including computers, electric cars, and wind-powered generators. Currently, the strongest permanent magnets contain rare earth for most technologies requiring permanent magnets, due to their high energy product and coercivity. However

  12. THERMOSIPHON WATER HEATERS WITH HEAT EXCHANGERS

    E-Print Network [OSTI]

    Mertol, Atila

    2012-01-01T23:59:59.000Z

    The Performance of Solar Water Heater With Natural Ci rcul2-6, 1980 THERMOSIPHON WATER HEATERS WITH HEAT EXCHANGERSJune 1980 THERMOSIPHON WATER HEATERS WITH HEAT EXCHANGERS*

  13. Dampers for Natural Draft Heaters: Technical Report

    E-Print Network [OSTI]

    Lutz, James D.

    2009-01-01T23:59:59.000Z

    Oil? Fired Residential Water Heaters. Berkeley Heights, Newof Residential Gas Water Heaters. Chicago, IL, Gas ApplianceDampers for Natural Draft Water Heaters: Technical Report.

  14. Water Heaters and Hot Water Distribution Systems

    E-Print Network [OSTI]

    Lutz, Jim

    2012-01-01T23:59:59.000Z

    Gas-fired Storage Water Heater .. 418 Assess California’s Small Gas Storage Water Heaters Small Gas Storage Water Heater Market The objective of

  15. Automated robotic equipment for ultrasonic inspection of pressurizer heater wells

    DOE Patents [OSTI]

    Nachbar, Henry D. (Ballston Lake, NY); DeRossi, Raymond S. (Amsterdam, NY); Mullins, Lawrence E. (Middle Grove, NY)

    1993-01-01T23:59:59.000Z

    A robotic device for remotely inspecting pressurizer heater wells is provided which has the advantages of quickly, precisely, and reliably acquiring data at reasonable cost while also reducing radiation exposure of an operator. The device comprises a prober assembly including a probe which enters a heater well, gathers data regarding the condition of the heater well and transmits a signal carrying that data; a mounting device for mounting the probe assembly at the opening of the heater well so that the probe can enter the heater well; a first motor mounted on the mounting device for providing movement of the probe assembly in an axial direction; and a second motor mounted on the mounting device for providing rotation of the probe assembly. This arrangement enables full inspection of the heater well to be carried out.

  16. Regional Variation in Residential Heat Pump Water Heater Performance in the U.S.: Preprint

    SciTech Connect (OSTI)

    Maguire, J.; Burch, J.; Merrigan, T.; Ong, S.

    2014-01-01T23:59:59.000Z

    Residential heat pump water heaters (HPWHs) have recently reemerged on the U.S. market. These units have the potential to provide homeowners significant cost and energy savings. However, actual in use performance of a HPWH will vary significantly with climate, installation location, HVAC equipment, and hot water use. To determine what actual in use energy consumption of a HPWH may be in different regions of the U.S., annual simulations of both 50 and 80 gallon HPWHs as well as a standard electric water heater were performed for over 900 locations across the U.S. The simulations included a benchmark home to take into account interactions between the space conditioning equipment and the HPWH and a realistic hot water draw profile. It was found that the HPWH will always save some source energy when compared to a standard electric resistance water heater, although savings varies widely with location. In addition to looking at source energy savings, the breakeven cost (the net installed cost a HPWH would have to have to be a cost neutral replacement for a standard water heater) was also examined. The highest breakeven costs were seen in cases with high energy savings, such as the southeastern U.S., or high energy costs, such as New England and California. While the breakeven cost is higher for 80 gallon units than 50 gallon units, the higher net installed costs of an 80 gallon unit lead to the 50 gallon HPWHs being more likely to be cost effective.

  17. Life cycle assessment of buildings technologies: High-efficiency commercial lighting and residential water heaters

    SciTech Connect (OSTI)

    Freeman, S.L.

    1997-01-01T23:59:59.000Z

    In this study the life cycle emissions and energy use are estimated for two types of energy technologies. The first technology evaluated is the sulfur lamp, a high-efficiency lighting system under development by the US Department of Energy (DOE) and Fusion Lighting, the inventor of the technology. The sulfur lamp is compared with conventional metal halide high-intensity discharge lighting systems. The second technology comparison is between standard-efficiency and high-efficiency gas and electric water heaters. In both cases the life cycle energy use and emissions are presented for the production of an equivalent level of service by each of the technologies. For both analyses, the energy use and emissions from the operation of the equipment are found to dominate the life cycle profile. The life cycle emissions for the water heating systems are much more complicated. The four systems compared include standard- and high-efficiency gas water heaters, standard electric resistance water heaters, and heat pump water heaters.

  18. Utilization of Heat Pump Water Heaters for Load Management

    SciTech Connect (OSTI)

    Boudreaux, Philip R [ORNL; Jackson, Roderick K [ORNL; Munk, Jeffrey D [ORNL; Gehl, Anthony C [ORNL; Lyne, Christopher T [ORNL

    2014-01-01T23:59:59.000Z

    The Energy Conservation Standards for Residential Water Heaters require residential electric storage water heaters with volumes larger than 55 gallons to have an energy factor greater than 2.0 after April 2015. While this standard will significantly increase the energy efficiency of water heaters, large electric storage water heaters that do not use heat pump technologies may no longer be available. Since utilities utilize conventional large-volume electric storage water heaters for thermal storage in demand response programs, there is a concern that the amended standard will significantly limit demand response capacity. To this end, Oak Ridge National Laboratory partnered with the Tennessee Valley Authority to investigate the load management capability of heat pump water heaters that meet or exceed the forthcoming water heater standard. Energy consumption reduction during peak periods was successfully demonstrated, while still meeting other performance criteria. However, to minimize energy consumption, it is important to design load management strategies that consider the home s hourly hot water demand so that the homeowner has sufficient hot water.

  19. Energy Conservation in Process Heaters

    E-Print Network [OSTI]

    Bagge, R. W.

    1982-01-01T23:59:59.000Z

    ENERGY CONSERVATION IN PROCESS HEATERS Roger l~. Bagge Neste Engineering Porvoo, Finland ABSTRACT OPTIMIZATION OF EMER~Y USE Energy savings in refinery and petrochemical fired heaters can basically be achieved in two ways: Thru optimization...

  20. Testing and analysis of the Semiscale Mod-1 heater rod design

    SciTech Connect (OSTI)

    Larson, T.K.

    1980-01-01T23:59:59.000Z

    The use of electrically heated nuclear fuel rod simulators in the Semiscale Program is traced from a historical viewpoint. The design of the Semiscale Mod-1 electrical heater rod and core simulator is discussed. Heater rod thermal response during transient thermal-hydraulic depressurization experiments conducted in the Mod-1 system, and analysis techniques and tests conducted to help quantify heater rod characteristics and behavior are presented.

  1. #include #include

    E-Print Network [OSTI]

    Campbell, Andrew T.

    process #12;#include #include pid_t pid = fork(); if (pid () failed */ } else if (pid == 0) { /* parent process */ } else { /* child process */ } #12;thread #12

  2. Alliant Energy Interstate Power and Light (Gas and Electric)...

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

    Replacement: 20 Freezer: 25 Room Air Conditioner: 25 Water Heater: 50 Electric Heat Pump Water Heaters: 100 Circulating Fans: 25 - 75 Milkers and Heat Reclaimers: 5...

  3. Sangre De Cristo Electric Association- Energy Efficiency Credit Program

    Broader source: Energy.gov [DOE]

    The Sangre De Cristo Electric Association (SDCEA) offers the Energy Efficiency Credit Program, a rebate program which offers incentives for space heaters, water heaters and appliances.

  4. Gas Turbine Fired Heater Integration: Achieve Significant Energy Savings

    E-Print Network [OSTI]

    Iaquaniello, G.; Pietrogrande, P.

    GAS TURBINE FIRED HEATER INTEGRATION: ACHIEVE SIGNIFICANT ENERGY SAVINGS G. Iaquaniello**, P. Pietrogrande* *KTI Corp., Research and Development Division, Monrovia, California **KTI SpA, Rome, Italy ABSTRAer Faster payout will result if gas... as in steam turbines. A specific example of how cogeneration can work in this way is in the integration of a gas turbine with a fired heater as shown in Figure 2. Electrical or mechanical power is delivered by the gas turbine while the exhaust combustion...

  5. SINGLE HEATER TEST FINAL REPORT

    SciTech Connect (OSTI)

    J.B. Cho

    1999-05-01T23:59:59.000Z

    The Single Heater Test is the first of the in-situ thermal tests conducted by the U.S. Department of Energy as part of its program of characterizing Yucca Mountain in Nevada as the potential site for a proposed deep geologic repository for the disposal of spent nuclear fuel and high-level nuclear waste. The Site Characterization Plan (DOE 1988) contained an extensive plan of in-situ thermal tests aimed at understanding specific aspects of the response of the local rock-mass around the potential repository to the heat from the radioactive decay of the emplaced waste. With the refocusing of the Site Characterization Plan by the ''Civilian Radioactive Waste Management Program Plan'' (DOE 1994), a consolidated thermal testing program emerged by 1995 as documented in the reports ''In-Situ Thermal Testing Program Strategy'' (DOE 1995) and ''Updated In-Situ Thermal Testing Program Strategy'' (CRWMS M&O 1997a). The concept of the Single Heater Test took shape in the summer of 1995 and detailed planning and design of the test started with the beginning fiscal year 1996. The overall objective of the Single Heater Test was to gain an understanding of the coupled thermal, mechanical, hydrological, and chemical processes that are anticipated to occur in the local rock-mass in the potential repository as a result of heat from radioactive decay of the emplaced waste. This included making a priori predictions of the test results using existing models and subsequently refining or modifying the models, on the basis of comparative and interpretive analyses of the measurements and predictions. A second, no less important, objective was to try out, in a full-scale field setting, the various instruments and equipment to be employed in the future on a much larger, more complex, thermal test of longer duration, such as the Drift Scale Test. This ''shake down'' or trial aspect of the Single Heater Test applied not just to the hardware, but also to the teamwork and cooperation between multiple organizations performing their part in the test.

  6. Covered Product Category: Commercial Gas Water Heaters

    Broader source: Energy.gov [DOE]

    FEMP provides acquisition guidance and Federal efficiency requirements across a variety of product categories, including commercial gas water heaters, which are covered by the ENERGY STAR® program. Federal laws and requirements mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law.

  7. #include #include

    E-Print Network [OSTI]

    Poinsot, Laurent

    #include #include //Rappels : "getpid()" permet d'obtenir son propre pid // "getppid()" renvoie le pid du père d'un processus int main (void) { pid_t pid_fils; pid_fils = fork(); if(pid_fils==-1) { printf("Erreur de création du processus fils\

  8. FEMP Designated Product Assessment for Commercial Gas Water Heaters

    E-Print Network [OSTI]

    Lutz, Jim

    2012-01-01T23:59:59.000Z

    the CFR as being storage water heaters, instantaneous watersupply boilers. Storage water heater means a water heaterAppliance Gas storage water heaters Definition a water

  9. Regenerative air heater

    DOE Patents [OSTI]

    Hasselquist, Paul B. (Maple Grove, MN); Baldner, Richard (Minnetonka, MN)

    1982-01-01T23:59:59.000Z

    A gas-cooled steel skirt is used to support a refractory cored brick matrix and dome structure in a high temperature regenerative air heater useful in magnetohydrodynamic power generation. The steel skirt thermally expands to accommodate the thermal expansion of the dome structure despite substantial temperature differential thereby reducing relative movement between the dome bricks. Gas cooling of the steel skirt allows the structure to operate above its normal temperature during clean-out cycles and also allows for the control of the thermal expansion of the steel skirt.

  10. Regenerative air heater

    DOE Patents [OSTI]

    Hasselquist, P.B.; Baldner, R.

    1980-11-26T23:59:59.000Z

    A gas-cooled steel skirt is used to support a refractory cored brick matrix and dome structure in a high temperature regenerative air heater useful in magnetohydrodynamic power generation. The steel skirt thermally expands to accommodate the thermal expansion of the dome structure despite substantial temperature differential thereby reducing relative movement between the dome bricks. Gas cooling of the steel skirt allows the structure to operate above its normal temperature during clean-out cycles and also allows for the control of the thermal expansion of the steel skirt.

  11. MEAN MONTHLY PERFORMANCE OF PASSIVE SOLAR HEATERS

    E-Print Network [OSTI]

    Place, W.

    2011-01-01T23:59:59.000Z

    OF PASSIVE SOLAR WATER HEATERS W. Place, M. Daneshyar. andOF PASSIVE SOLAR WATER HEATERS* We Place, M. Daneshyar, tWarm Water Standard Water Heater Tank Hot Water The solar

  12. Do You Have a Solar Water Heater?

    Broader source: Energy.gov [DOE]

    Earlier this week, Ernie wrote about the economics of getting a solar water heater. As Ernie explained, a solar water heater is more expensive than a normal water heater, but depending on your area...

  13. What to Bring to Lehigh Electric cooking appliances (including but not limited to coffee makers, toasters, toaster

    E-Print Network [OSTI]

    Napier, Terrence

    , toasters, toaster ovens, grills, griddles, hot pots, hot plates) Portable heaters or air conditioners's license or ID card Storage bins, trunks or foot lockers Free-standing lamp (No halogen bulbs) Games snacks Water bottles Sewing kit #12;

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

    Energy Savers [EERE]

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

  15. 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

  16. THERMAL ENHANCEMENT CARTRIDGE HEATER MODIFIED TECH MOD TRITIUM HYDRIDE BED DEVELOPMENT PART I DESIGN AND FABRICATION

    SciTech Connect (OSTI)

    Klein, J.; Estochen, E.

    2014-03-06T23:59:59.000Z

    The Savannah River Site (SRS) tritium facilities have used 1{sup st} generation (Gen1) LaNi{sub 4.25}Al{sub 0.75} (LANA0.75) metal hydride storage beds for tritium absorption, storage, and desorption. The Gen1 design utilizes hot and cold nitrogen supplies to thermally cycle these beds. Second and 3{sup rd} generation (Gen2 and Gen3) storage bed designs include heat conducting foam and divider plates to spatially fix the hydride within the bed. For thermal cycling, the Gen2 and Gen 3 beds utilize internal electric heaters and glovebox atmosphere flow over the bed inside the bed external jacket for cooling. The currently installed Gen1 beds require replacement due to tritium aging effects on the LANA0.75 material, and cannot be replaced with Gen2 or Gen3 beds due to different designs of these beds. At the end of service life, Gen1 bed desorption efficiencies are limited by the upper temperature of hot nitrogen supply. To increase end-of-life desorption efficiency, the Gen1 bed design was modified, and a Thermal Enhancement Cartridge Heater Modified (TECH Mod) bed was developed. Internal electric cartridge heaters in the new design to improve end-of-life desorption, and also permit in-bed tritium accountability (IBA) calibration measurements to be made without the use of process tritium. Additional enhancements implemented into the TECH Mod design are also discussed.

  17. Measure Guideline: Heat Pump Water Heaters in New and Existing Homes

    SciTech Connect (OSTI)

    Shapiro, C.; Puttagunta, S.; Owens, D.

    2012-02-01T23:59:59.000Z

    This Building America Measure Guideline is intended for builders, contractors, homeowners, and policy-makers. This document is intended to explore the issues surrounding heat pump water heaters (HPWHs) to ensure that homeowners and contractors have the tools needed to appropriately and efficiently install HPWHs. Heat pump water heaters (HPWHs) promise to significantly reduce energy consumption for domestic hot water (DHW) over standard electric resistance water heaters (ERWHs). While ERWHs perform with energy factors (EFs) around 0.9, new HPWHs boast EFs upwards of 2.0. High energy factors in HPWHs are achieved by combining a vapor compression system, which extracts heat from the surrounding air at high efficiencies, with electric resistance element(s), which are better suited to meet large hot water demands. Swapping ERWHs with HPWHs could result in roughly 50% reduction in water heating energy consumption for 35.6% of all U.S. households. This Building America Measure Guideline is intended for builders, contractors, homeowners, and policy-makers. While HPWHs promise to significantly reduce energy use for DHW, proper installation, selection, and maintenance of HPWHs is required to ensure high operating efficiency and reliability. This document is intended to explore the issues surrounding HPWHs to ensure that homeowners and contractors have the tools needed to appropriately and efficiently install HPWHs. Section 1 of this guideline provides a brief description of HPWHs and their operation. Section 2 highlights the cost and energy savings of HPWHs as well as the variables that affect HPWH performance, reliability, and efficiency. Section 3 gives guidelines for proper installation and maintenance of HPWHs, selection criteria for locating HPWHs, and highlights of important differences between ERWH and HPWH installations. Throughout this document, CARB has included results from the evaluation of 14 heat pump water heaters (including three recently released HPWH products) installed in existing homes in the northeast region of the United States.

  18. 1 000 000 "C/s thin film electrical heater: ln situ resistivity measurements of Al and Ti/Si thin films during ultra rapid thermal annealing

    E-Print Network [OSTI]

    Allen, Leslie H.

    introduce a new technique for rapidly heating (10' "C/s) thin films using an electrical thermal annealing- ently, most commercial RTA systems use radiation-heating techniques via tungsten-halogen lamps. These systems typi- cally have a maximum heating rate of 100-300 "C/s. We introduce an alternative methodfor

  19. Nuclear Plant Feedwater Heater Handbook. Volume 2. Design and procurement guidelines. Final report

    SciTech Connect (OSTI)

    Bell, R.J.; Wells, T.G. Jr.

    1985-06-01T23:59:59.000Z

    This document is the second part of a three volume handbook covering closed feedwater heaters for nuclear electric power generating plants. This second volume covers the engineering, design, specification, bid, procurement, fabrication, installation and commissioning of the heater. 22 refs., 12 figs., 17 tabs.

  20. White Paper on Energy Efficiency Status of Energy-Using Products in China (2011)

    E-Print Network [OSTI]

    Zhou, Nan

    2013-01-01T23:59:59.000Z

    electric storage tank water heaters (electric water heatersElectric storage tank water heaters Washing machines (including tank storage electric water heaters, gas water

  1. Field Monitoring Protocol: Heat Pump Water Heaters

    SciTech Connect (OSTI)

    Sparn, B.; Earle, L.; Christensen, D.; Maguire, J.; Wilson, E.; Hancock, E.

    2013-02-01T23:59:59.000Z

    This document provides a standard field monitoring protocol for evaluating the installed performance of Heat Pump Water Heaters in residential buildings. The report is organized to be consistent with the chronology of field test planning and execution. Research questions are identified first, followed by a discussion of analysis methods, and then the details of measuring the required information are laid out. A field validation of the protocol at a house near the NREL campus is included for reference.

  2. Solar Water Heater Rebate

    Broader source: Energy.gov [DOE]

    Hawaii Energy, a third-party administered public benefits fund, provides incentives for energy efficiency and conservation to customers of the Hawaiian Electric Company (HECO) and its subsidiaries,...

  3. Circulating current battery heater

    DOE Patents [OSTI]

    Ashtiani, Cyrus N. (West Bloomfield, MI); Stuart, Thomas A. (Toledo, OH)

    2001-01-01T23:59:59.000Z

    A circuit for heating energy storage devices such as batteries is provided. The circuit includes a pair of switches connected in a half-bridge configuration. Unidirectional current conduction devices are connected in parallel with each switch. A series resonant element for storing energy is connected from the energy storage device to the pair of switches. An energy storage device for intermediate storage of energy is connected in a loop with the series resonant element and one of the switches. The energy storage device which is being heated is connected in a loop with the series resonant element and the other switch. Energy from the heated energy storage device is transferred to the switched network and then recirculated back to the battery. The flow of energy through the battery causes internal power dissipation due to electrical to chemical conversion inefficiencies. The dissipated power causes the internal temperature of the battery to increase. Higher internal temperatures expand the cold temperature operating range and energy capacity utilization of the battery. As disclosed, either fixed frequency or variable frequency modulation schemes may be used to control the network.

  4. LOW COST HEAT PUMP WATER HEATER (HPWH)

    SciTech Connect (OSTI)

    Mei, Vince C [ORNL; Baxter, Van D [ORNL

    2006-01-01T23:59:59.000Z

    Water heating accounts for the second largest portion of residential building energy consumption, after space conditioning. Existing HPWH products are a technical success, with demonstrated energy savings of 50% or more compared with standard electric resistance water heaters. However, current HPWHs available on the market cost an average of $1000 or more, which is too expensive for significant market penetration. What is needed is a method to reduce the first cost of HPWHs, so that the payback period will be reduced from 8 years to a period short enough for the market to accept this technology. A second problem with most existing HPWH products is the reliability issue associated with the pump and water loop needed to circulate cool water from the storage tank to the HPWH condenser. Existing integral HPWHs have the condenser wrapped around the water tank and thus avoid the pump and circulation issues but require a relatively complex and expensive manufacturing process. A more straightforward potentially less costly approach to the integral, single package HPWH design is to insert the condenser directly into the storage tank, or immersed direct heat exchanger (IDX). Initial development of an IDX HPWH met technical performance goals, achieving measured efficiencies or energy factors (EF) in excess of 1.79. In comparison conventional electric water heaters (EWH) have EFs of about 0.9. However, the initial approach required a 2.5" hole on top of the tank for insertion of the condenser - much larger than the standard openings typically provided. Interactions with water heater manufacturers indicated that the non standard hole size would likely lead to increased manufacturing costs (at least initially) and largely eliminate any cost advantage of the IDX approach. Recently we have been evaluating an approach to allow use of a standard tank hole size for insertion of the IDX condenser. Laboratory tests of a prototype have yielded an EF of 2.02.

  5. Reliability evaluation of electric power generation systems including unconventional energy sources

    E-Print Network [OSTI]

    Lago-Gonzalez, Alex

    1984-01-01T23:59:59.000Z

    through photovoltaic cells, and wind power generation, proto- types have been built and tested. Commercial operation of these two is expected to start in the late 1980's or early 1990's. For the rest of the alternatives the expected date of operation... appropiate for these units because they may have several derated states. However, due to the short operating experience with these units, there is not enough data available to develop more accurate models. 3. 1 Description of PEPS Photovoltaic electric...

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

    E-Print Network [OSTI]

    Franco, Victor

    2011-01-01T23:59:59.000Z

    M.V. Lapsa. 2001. Residential Heat Pump Water Heater (HPWH)Calwell. 2005. Residential Heat Pump Water Heaters: Energyfor Residential Heat Pump Water Heaters Installed in

  7. 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...

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

    E-Print Network [OSTI]

    Franco, Victor

    2011-01-01T23:59:59.000Z

    2001. Residential Heat Pump Water Heater (HPWH) Development2005. Residential Heat Pump Water Heaters: Energy Efficiencyfor Residential Heat Pump Water Heaters Installed in

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

    E-Print Network [OSTI]

    Franco, Victor

    2011-01-01T23:59:59.000Z

    2001. Residential Heat Pump Water Heater (HPWH) DevelopmentJ. 2003. Incorporating Water Heater Replacement into The2005. Residential Heat Pump Water Heaters: Energy Efficiency

  10. Electric double layer for spherical particles in salt-free concentrated suspensions including ion size effects

    E-Print Network [OSTI]

    R. Roa; F. Carrique; E. Ruiz-Reina

    2011-02-17T23:59:59.000Z

    The equilibrium electric double layer (EDL) that surrounds the colloidal particles is determinant for the response of a suspension under a variety of static or alternating external fields. An ideal salt-free suspension is composed by the charged colloidal particles and the ionic countercharge released by the charging mechanism. The existing macroscopic theoretical models can be improved by incorporating different ionic effects usually neglected in previous mean-field approaches, which are based on the Poisson-Boltzmann equation (PB). The influence of the finite size of the ions seems to be quite promising because it has been shown to predict phenomena like charge reversal, which has been out of the scope of classical PB approximations. In this work we numerically obtain the surface electric potential and the counterions concentration profiles around a charged particle in a concentrated salt-free suspension corrected by the finite size of the counterions. The results show the large importance of such corrections for moderate to high particle charges at every particle volume fraction, specially, when a region of closest approach of the counterions to the particle surface is considered. We conclude that finite ion size considerations are obeyed for the development of new theoretical models to study nonequilibrium properties in concentrated colloidal suspensions, particularly the salt-free ones with small and highly charged particles.

  11. East Central Electric Cooperative- Residential Rebate Program

    Broader source: Energy.gov [DOE]

    East Central Electric Cooperative offers rebates to residential customers to install energy-efficient ground source heat pumps, electric water heaters, and appliances. To qualify for the rebate...

  12. The Influence of Residential Solar Water Heating on Electric Utility Demand

    E-Print Network [OSTI]

    Vliet, G. C.; Askey, J. L.

    1984-01-01T23:59:59.000Z

    Similar sets of residences in Austin, Texas with electric water heaters and solar water heaters with electric back-up were monitored during 1982 to determine their instantaneous electric demands, the purpose being to determine the influence...

  13. Field Performance of Heat Pump Water Heaters in the Northeast

    SciTech Connect (OSTI)

    Shapiro, C.; Puttagunta, S.

    2013-08-01T23:59:59.000Z

    Heat pump water heaters (HPWHs) are finally entering the mainstream residential water heater market. Potential catalysts are increased consumer demand for higher energy efficiency electric water heating and a new Federal water heating standard that effectively mandates use of HPWHs for electric storage water heaters with nominal capacities greater than 55 gallons. When compared to electric resistance water heating, the energy and cost savings potential of HPWHs is tremendous. Converting all electric resistance water heaters to HPWHs could save American consumers 7.8 billion dollars annually ($182 per household) in water heating operating costs and cut annual residential source energy consumption for water heating by 0.70 quads. Steven Winter Associates, Inc. embarked on one of the first in situ studies of these newly released HPWH products through a partnership with two sponsoring electric utility companies, National Grid and NSTAR, and one sponsoring energy efficiency service program administrator, Cape Light Compact. Recent laboratory studies have measured performance of HPWHs under various operating conditions, but publicly available field studies have not been as available. This evaluation attempts to provide publicly available field data on new HPWHs by monitoring the performance of three recently released products (General Electric GeoSpring(tm), A.O. Smith Voltex(r), and Stiebel Eltron Accelera(r)300). Fourteen HPWHs were installed in Massachusetts and Rhode Island and monitored for over a year. Of the 14 units, ten were General Electric models (50 gallon units), two were Stiebel Eltron models (80 gallon units), and two were A.O. Smith models (one 60-gallon and one 80-gallon unit).

  14. Heater head for Stirling engine

    SciTech Connect (OSTI)

    White, M.A.; Emigh, S.G.

    1987-06-09T23:59:59.000Z

    This patent describes a heater head for a Stirling engine comprising: a housing for enclosing the heater head with gas at a substantial elevated pressure; insulator means attached to the housing for insulating the heater head; inlet means attached to a regenerator in the housing for admission of relatively high pressure working fluid from the regenerator of a Stirling engine; a first annular heating wall in the housing attached to the inlet means for heating the working fluid; and, a second annular heating wall in the housing concentric with the first heating wall but of lesser diameters so that an annular space is formed between the first heating wall and the second heating wall for heating working fluid; and a third heating wall in the housing concentric with and smaller in diameter than the second heating wall forming the condensing area of a heat pipe between the second heating wall and the third heating wall.

  15. Tankless or Demand-Type Water Heaters | Department of Energy

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

    Tankless or Demand-Type Water Heaters Tankless or Demand-Type Water Heaters May 2, 2012 - 6:47pm Addthis Diagram of a tankless water heater. Diagram of a tankless water heater. How...

  16. Numerical power balance and free energy loss analysis for solar cells including optical, thermodynamic, and electrical aspects

    SciTech Connect (OSTI)

    Greulich, Johannes, E-mail: johannes.greulich@ise.fraunhofer.de; Höffler, Hannes; Würfel, Uli; Rein, Stefan [Fraunhofer Institute for Solar Energy Systems, Heidenhofstr. 2, D-79110 Freiburg (Germany)

    2013-11-28T23:59:59.000Z

    A method for analyzing the power losses of solar cells is presented, supplying a complete balance of the incident power, the optical, thermodynamic, and electrical power losses and the electrical output power. The involved quantities have the dimension of a power density (units: W/m{sup 2}), which permits their direct comparison. In order to avoid the over-representation of losses arising from the ultraviolet part of the solar spectrum, a method for the analysis of the electrical free energy losses is extended to include optical losses. This extended analysis does not focus on the incident solar power of, e.g., 1000?W/m{sup 2} and does not explicitly include the thermalization losses and losses due to the generation of entropy. Instead, the usable power, i.e., the free energy or electro-chemical potential of the electron-hole pairs is set as reference value, thereby, overcoming the ambiguities of the power balance. Both methods, the power balance and the free energy loss analysis, are carried out exemplarily for a monocrystalline p-type silicon metal wrap through solar cell with passivated emitter and rear (MWT-PERC) based on optical and electrical measurements and numerical modeling. The methods give interesting insights in photovoltaic (PV) energy conversion, provide quantitative analyses of all loss mechanisms, and supply the basis for the systematic technological improvement of the device.

  17. 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

  18. Demand Response Performance of GE Hybrid Heat Pump Water Heater

    SciTech Connect (OSTI)

    Widder, Sarah H.; Parker, Graham B.; Petersen, Joseph M.; Baechler, Michael C.

    2013-07-01T23:59:59.000Z

    This report describes a project to evaluate and document the DR performance of HPWH as compared to ERWH for two primary types of DR events: peak curtailments and balancing reserves. The experiments were conducted with GE second-generation “Brillion”-enabled GeoSpring hybrid water heaters in the PNNL Lab Homes, with one GE GeoSpring water heater operating in “Standard” electric resistance mode to represent the baseline and one GE GeoSpring water heater operating in “Heat Pump” mode to provide the comparison to heat pump-only demand response. It is expected that “Hybrid” DR performance, which would engage both the heat pump and electric elements, could be interpolated from these two experimental extremes. Signals were sent simultaneously to the two water heaters in the side-by-side PNNL Lab Homes under highly controlled, simulated occupancy conditions. This report presents the results of the evaluation, which documents the demand-response capability of the GE GeoSpring HPWH for peak load reduction and regulation services. The sections describe the experimental protocol and test apparatus used to collect data, present the baselining procedure, discuss the results of the simulated DR events for the HPWH and ERWH, and synthesize key conclusions based on the collected data.

  19. Water Heaters (Storage Electric) | Department of Energy

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

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarlyEnergyDepartment ofDepartment of Energy While dryWashington'sResultsEnergyEfficiencyTheThe

  20. Heat pump water heater and storage tank assembly

    DOE Patents [OSTI]

    Dieckmann, John T. (Belmont, MA); Nowicki, Brian J. (Watertown, MA); Teagan, W. Peter (Acton, MA); Zogg, Robert (Belmont, MA)

    1999-09-07T23:59:59.000Z

    A water heater and storage tank assembly comprises a housing defining a chamber, an inlet for admitting cold water to the chamber, and an outlet for permitting flow of hot water from the chamber. A compressor is mounted on the housing and is removed from the chamber. A condenser comprises a tube adapted to receive refrigerant from the compressor, and winding around the chamber to impart heat to water in the chamber. An evaporator is mounted on the housing and removed from the chamber, the evaporator being adapted to receive refrigerant from the condenser and to discharge refrigerant to conduits in communication with the compressor. An electric resistance element extends into the chamber, and a thermostat is disposed in the chamber and is operative to sense water temperature and to actuate the resistance element upon the water temperature dropping to a selected level. The assembly includes a first connection at an external end of the inlet, a second connection at an external end of the outlet, and a third connection for connecting the resistance element, compressor and evaporator to an electrical power source.

  1. Induction heaters used to heat subsurface formations

    DOE Patents [OSTI]

    Nguyen, Scott Vinh (Houston, TX); Bass, Ronald M. (Houston, TX)

    2012-04-24T23:59:59.000Z

    A heating system for a subsurface formation includes an elongated electrical conductor located in the subsurface formation. The electrical conductor extends between at least a first electrical contact and a second electrical contact. A ferromagnetic conductor at least partially surrounds and at least partially extends lengthwise around the electrical conductor. The electrical conductor, when energized with time-varying electrical current, induces sufficient electrical current flow in the ferromagnetic conductor such that the ferromagnetic conductor resistively heats to a temperature of at least about 300.degree. C.

  2. Feedback regulated induction heater for a flowing fluid

    DOE Patents [OSTI]

    Migliori, A.; Swift, G.W.

    1984-06-13T23:59:59.000Z

    A regulated induction heater for heating a stream of flowing fluid to a predetermined desired temperature. The heater includes a radiofrequency induction coil which surrounds a glass tube through which the fluid flows. A heating element consisting of a bundle of approximately 200 stainless steel capillary tubes located within the glass tube couples the output of the induction coil to the fluid. The temperature of the fluid downstream from the heating element is sensed with a platinum resistance thermometer, the output of which is applied to an adjustable porportional and integral feedback control circuit which regulates the power applied to the induction coil. The heater regulates the fluid temperature to within 0.005/sup 0/C at a flow rate of 50 cm/sup 3//sec with a response time of less than 0.1 second, and can accommodate changes in heat load up to 1500 watts.

  3. Feedback regulated induction heater for a flowing fluid

    DOE Patents [OSTI]

    Migliori, Albert (Santa Fe, NM); Swift, Gregory W. (Los Alamos, NM)

    1985-01-01T23:59:59.000Z

    A regulated induction heater for heating a stream of flowing fluid to a predetermined desired temperature. The heater includes a radiofrequency induction coil which surrounds a glass tube through which the fluid flows. A heating element consisting of a bundle of approximately 200 stainless steel capillary tubes located within the glass tube couples the output of the induction coil to the fluid. The temperature of the fluid downstream from the heating element is sensed with a platinum resistance thermometer, the output of which is applied to an adjustable proportional and integral feedback control circuit which regulates the power applied to the induction coil. The heater regulates the fluid temperature to within 0.005.degree. C. at a flow rate of 50 cm.sup.3 /second with a response time of less than 0.1 second, and can accommodate changes in heat load up to 1500 watts.

  4. Dehumidifying water heater

    SciTech Connect (OSTI)

    Not Available

    1992-08-18T23:59:59.000Z

    Drawings and specifications are included for the system to heat water for the swimming pool and dehumidify the building of the Glen Cove YMCA. An overview is presented of the Nautica product used in this system. (MHR)

  5. DPF heater attachment mechanisms

    DOE Patents [OSTI]

    Gonze, Eugene V [Pinckney, MI; Ament, Frank [Troy, MI

    2011-04-26T23:59:59.000Z

    An exhaust filter system includes a particulate filter (PF) that is disposed downstream from an engine. The PF filters particulates within an exhaust from the engine. A heating element heats particulate matter in the PF. A fastener limits expansion movement of the heating element relative to the PF.

  6. Performance improvement of direct- and indirect-fired heaters

    SciTech Connect (OSTI)

    Sams, G.W.; Hunter, J.D.

    1988-08-01T23:59:59.000Z

    The operating performance of direct and indirect heaters is discussed, and principles and guidelines that can be applied to effect improvements in efficiency are presented. This paper also discusses the associated heater efficiencies and several useful operating techniques to approach the maximum, steady-state heater efficiency. The techniques presented apply to all types of direct-and indirect-fired heaters: salt bath heaters, propane vaporizers, heater/treaters, production heaters, and glycol and amine regenerators.

  7. Covered Product Category: Residential Heat Pump Water Heaters

    Broader source: Energy.gov [DOE]

    FEMP provides acquisition guidance and Federal efficiency requirements across a variety of product categories, including residential heat pump water heaters, which are an ENERGY STAR®-qualified product category. Federal laws and requirements mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law.

  8. Covered Product Category: Residential Gas Storage Water Heaters

    Broader source: Energy.gov [DOE]

    FEMP provides acquisition guidance across a variety of product categories, including gas storage water heaters, which are an ENERGY STAR®-qualified product category. Federal laws and requirements mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law.

  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

    water heaters, heat-pump water heaters, and instantaneous (Wasted water Solar Heat pump water heater Australia/New

  10. Calculating Fired Heater Efficiency

    E-Print Network [OSTI]

    Harriz, J. T.; Ritter, E. L.

    bills. A review of the Heat Loss and Input/Output methods of efficiency analyses is presented, along with a discussion of their relative accuracy. Examples cited include refinery mixed fuel gas, coal, and chemical recovery fueled applications, using.... 75 percent excess 02 (dry basis) -- a respectable operation. Eva luate boi ler effieiency when burning mixed refinery gas (at an oil refinery), coa1 (at a central power station) and black liquor (at a paper mill). The practical definition of LHV...

  11. Consolidated Electric Cooperative- Heat Pump and Water Heating Rebates

    Broader source: Energy.gov [DOE]

    Consolidated Electric Cooperative provides rebates to residential customers who install electric water heaters, dual-fuel heating system or geothermal heat pumps. A dual-fuel heating systems...

  12. Condensing Hybrid Water Heater Monitoring Field Evaluation

    SciTech Connect (OSTI)

    Maguire, J.; Earle, L.; Booten, C.; Hancock, C. E.

    2011-10-01T23:59:59.000Z

    This paper summarizes the Mascot home, an abandoned property that was extensively renovated. Several efficiency upgrades were integrated into this home, of particular interest, a unique water heater (a Navien CR240-A). Field monitoring was performed to determine the in-use efficiency of the hybrid condensing water heater. The results were compared to the unit's rated efficiency. This unit is Energy Star qualified and one of the most efficient gas water heaters currently available on the market.

  13. 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

  14. CO2 Conversion By Nano Heaters

    ScienceCinema (OSTI)

    None

    2014-06-23T23:59:59.000Z

    A graduate student named Oshadha Ranasingha created this animation on the research he performed on nano heaters while working at NETL.

  15. CO2 Conversion By Nano Heaters

    SciTech Connect (OSTI)

    None

    2014-03-11T23:59:59.000Z

    A graduate student named Oshadha Ranasingha created this animation on the research he performed on nano heaters while working at NETL.

  16. MEAN MONTHLY PERFORMANCE OF PASSIVE SOLAR HEATERS

    E-Print Network [OSTI]

    Place, W.

    2011-01-01T23:59:59.000Z

    storage water: Heat Flow Cold Water Solar Tank Warm Water Standard Water Heaterstorage tank can also be accom- plished by natural convection. In the compact water heater,

  17. Technical support document: Energy efficiency standards for consumer products: Room air conditioners, water heaters, direct heating equipment, mobile home furnaces, kitchen ranges and ovens, pool heaters, fluorescent lamp ballasts and television sets. Volume 3, Water heaters, pool heaters, direct heating equipment, and mobile home furnaces

    SciTech Connect (OSTI)

    Not Available

    1993-11-01T23:59:59.000Z

    This is Volume 3 in a series of documents on energy efficiency of consumer products. This volume discusses energy efficiency of water heaters. Water heaters are defined by NAECA as products that utilize oil, gas, or electricity to heat potable water for use outside the heater upon demand. These are major appliances, which use a large portion (18% on average) of total energy consumed per household (1). They differ from most other appliances in that they are usually installed in obscure locations as part of the plumbing and are ignored until they fail. Residential water heaters are capable of heating water up to 180{degrees}F, although the setpoints are usually set lower.

  18. Combustion heater for oil shale

    DOE Patents [OSTI]

    Mallon, R.; Walton, O.; Lewis, A.E.; Braun, R.

    1983-09-21T23:59:59.000Z

    A combustion heater for oil shale heats particles of spent oil shale containing unburned char by burning the char. A delayed fall is produced by flowing the shale particles down through a stack of downwardly sloped overlapping baffles alternately extending from opposite sides of a vertical column. The delayed fall and flow reversal occurring in passing from each baffle to the next increase the residence time and increase the contact of the oil shale particles with combustion supporting gas flowed across the column to heat the shale to about 650 to 700/sup 0/C for use as a process heat source.

  19. Combustion heater for oil shale

    DOE Patents [OSTI]

    Mallon, Richard G. (Livermore, CA); Walton, Otis R. (Livermore, CA); Lewis, Arthur E. (Los Altos, CA); Braun, Robert L. (Livermore, CA)

    1985-01-01T23:59:59.000Z

    A combustion heater for oil shale heats particles of spent oil shale containing unburned char by burning the char. A delayed fall is produced by flowing the shale particles down through a stack of downwardly sloped overlapping baffles alternately extending from opposite sides of a vertical column. The delayed fall and flow reversal occurring in passing from each baffle to the next increase the residence time and increase the contact of the oil shale particles with combustion supporting gas flowed across the column to heat the shale to about 650.degree.-700.degree. C. for use as a process heat source.

  20. LBNL/ PUB 3000 Chapter 8 Questions on Electrical Cords 2010 Questions have been asked about electrical safety that includes extension cords,

    E-Print Network [OSTI]

    Knowles, David William

    LBNL/ PUB 3000 Chapter 8 ­ Questions on Electrical Cords 2010 Questions have been asked about at the Laboratory. #12;LBNL/ PUB 3000 Chapter 8 ­ Questions on Electrical Cords 2010 Avoiding Misuse of Extension

  1. FEMP Designated Product Assessment for Commercial Gas Water Heaters

    E-Print Network [OSTI]

    Lutz, Jim

    2012-01-01T23:59:59.000Z

    price for a condensing commercial water heater is $1,579.For condensing commercial water heaters with a thermalFound products for water heater in any product field and gas

  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 Heaters”, Task 5 Report, DefinitionTesting of Tankless Gas Water Heater Performance. Davis

  3. 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

    than standard storage water heaters [2]. However, they aredown for both storage-type water heaters and tankless water1]. The typical water heater storage tank wastes energy to

  4. Efficient Residential Water Heaters Webinar | Department of Energy

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

    Weatherization Assistance Program Pilot Projects Efficient Residential Water Heaters Webinar Efficient Residential Water Heaters Webinar On Feb. 22, 2011, Jerone Gagliano,...

  5. Covered Product Category: Residential Gas Storage Water Heaters...

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

    Storage Water Heaters Covered Product Category: Residential Gas Storage Water Heaters The Federal Energy Management Program (FEMP) provides acquisition guidance for gas storage...

  6. FEMP Designated Product Assessment for Commercial Gas Water Heaters

    E-Print Network [OSTI]

    Lutz, Jim

    2012-01-01T23:59:59.000Z

    resistance and heat pump water heaters are not covered.other than commercial heat pump water heaters). 10CFR431.110

  7. Development of a Market Optimized Condensing Gas Water Heater

    SciTech Connect (OSTI)

    Peter Pescatore

    2006-01-11T23:59:59.000Z

    This program covered the development of a market optimized condensing gas water heater for residential applications. The intent of the program was to develop a condensing design that minimized the large initial cost premium associated with traditional condensing water heater designs. Equally important was that the considered approach utilizes design and construction methods that deliver the desired efficiency without compromising product reliability. Standard condensing water heater approaches in the marketplace utilize high cost materials such as stainless steel tanks and heat exchangers as well as expensive burner systems to achieve the higher efficiencies. The key in this program was to develop a water heater design that uses low-cost, available components and technologies to achieve higher efficiency at a modest cost premium. By doing this, the design can reduce the payback to a more reasonable length, increasing the appeal of the product to the marketplace. Condensing water heaters have been in existence for years, but have not been able to significantly penetrate the market. The issue has typically been cost. The high purchase price associated with existing condensing water heaters, sometimes as much as $2000, has been a very difficult hurdle to overcome in the marketplace. The design developed under this program has the potential to reduce the purchase price of this condensing design by as much as $1000 as compared to traditional condensing units. The condensing water heater design developed over the course of this program led to an approach that delivered the following performance attributes: 90%+ thermal efficiency; 76,000 Btu/hr input rate in a 50 gallon tank; First hour rating greater than 180 gph; Rapid recovery time; and Overall operating condition well matched to combination heat and hot water applications. Over the final three years of the program, TIAX worked very closely with A.O. Smith Water Products Company as our commercial partner to optimize the design for manufacturing. This work included the initiation of a large field testing program (over 125 units) and an in-depth reliability program intended to minimize the risks associated with a new product introduction. At the time of this report, A.O. Smith plans to introduce this product to the marketplace in the early 2006 time period.

  8. Reliable, Economic, Efficient CO2 Heat Pump Water Heater for North America

    SciTech Connect (OSTI)

    Radcliff, Thomas D; Sienel, Tobias; Huff, Hans-Joachim; Thompson, Adrian; Sadegh, Payman; Olsommer, Benoit; Park, Young

    2006-12-31T23:59:59.000Z

    Adoption of heat pump water heating technology for commercial hot water could save up to 0.4 quads of energy and 5 million metric tons of CO2 production annually in North America, but industry perception is that this technology does not offer adequate performance or reliability and comes at too high of a cost. Development and demonstration of a CO2 heat pump water heater is proposed to reduce these barriers to adoption. Three major themes are addressed: market analysis to understand barriers to adoption, use of advanced reliability models to design optimum qualification test plans, and field testing of two phases of water heater prototypes. Market experts claim that beyond good performance, market adoption requires 'drop and forget' system reliability and a six month payback of first costs. Performance, reliability and cost targets are determined and reliability models are developed to evaluate the minimum testing required to meet reliability targets. Three phase 1 prototypes are designed and installed in the field. Based on results from these trials a product specification is developed and a second phase of five field trial units are built and installed. These eight units accumulate 11 unit-years of service including 15,650 hours and 25,242 cycles of compressor operation. Performance targets can be met. An availability of 60% is achieved and the capability to achieve >90% is demonstrated, but overall reliability is below target, with an average of 3.6 failures/unit-year on the phase 2 demonstration. Most reliability issues are shown to be common to new HVAC products, giving high confidence in mature product reliability, but the need for further work to minimize leaks and ensure reliability of the electronic expansion valve is clear. First cost is projected to be above target, leading to an expectation of 8-24 month payback when substituted for an electric water heater. Despite not meeting all targets, arguments are made that an industry leader could sufficiently develop this technology to impact the water heater market in the near term.

  9. Economics of Condensing Gas Furnaces and Water Heaters Potential in Residential Single Family Homes

    E-Print Network [OSTI]

    Lekov, Alex

    2011-01-01T23:59:59.000Z

    and F. Southworh. 2004. Heat pump water heater technology:gas tankless water heaters, heat pump water heaters,heat pump space heaters, and solar water heaters, as well as

  10. Electrical diesel particulate filter (DPF) regeneration

    DOE Patents [OSTI]

    Gonze, Eugene V; Ament, Frank

    2013-12-31T23:59:59.000Z

    An exhaust system that processes exhaust generated by an engine includes a diesel particulate filter (DPF) that is disposed downstream of the engine and that filters particulates from the exhaust. An electrical heater is disposed upstream of the DPF and selectively heats the exhaust to initiate combustion of the particulates within the exhaust as it passes therethrough. Heat generated by combustion of the particulates induces combustion of particulates within the DPF.

  11. Space Heaters, Computers, Cell Phone Chargers: How Plugged In AreCommercial Buildings?

    SciTech Connect (OSTI)

    Sanchez, Marla; Webber, Carrie; Brown, Richard; Busch, John; Pinckard, Margaret; Roberson, Judy

    2007-02-28T23:59:59.000Z

    Evidenceof electric plug loads in commercial buildings isvisible everyday: space heaters, portable fans, and the IT technician'stwo monitors connected to one PC. The Energy Information Administrationestimates that office and miscellaneous equipment together will consume2.18 quads in 2006, nearly 50 percent of U.S. commercial electricity use.Although the importance of commercial plug loads is documented, its verynature (diverse product types, products not installed when buildinginitially constructed, and products often hidden in closets) makes itdifficult to accurately count and categorize the end use.We auditedsixteen buildings in three cities (San Francisco, Atlanta, Pittsburgh)including office, medical and education building types. We inventoriedthe number and types of office and miscellaneous electric equipment aswell as estimated total energy consumption due to these product types. Intotal, we audited approximately 4,000 units of office equipment and 6,000units of miscellaneous equipment and covered a diverse range of productsranging from electric pencil sharpeners with a unit energy consumption(UEC) of 1 kWh/yr to a kiln with a UEC of 7,000 kWh/yr. Our paperpresents a summary of the density and type of plug load equipment foundas well as the estimated total energy consumption of the equipment.Additionally, we present equipment trends observed and provide insightsto how policy makers can target energy efficiency for this growing enduse.

  12. Electrically heated DPF start-up strategy

    DOE Patents [OSTI]

    Gonze, Eugene V [Pinckney, MI; Ament, Frank [Troy, MI

    2012-04-10T23:59:59.000Z

    An exhaust system that processes exhaust generated by an engine has a diesel particulate filter (DPF) that is disposed downstream of the engine and that filters particulates in the exhaust. An electrical heater is disposed upstream of the DPF and selectively heats the exhaust to initiate combustion of the particulates. Heat generated by combustion of particulates in the heater induces combustion of particulates within the DPF. A control module selectively enables current flow to the electrical heater for an initial period of a DPF regeneration cycle, and limits exhaust flow while the electrical heater is heating to a predetermined soot combustion temperature.

  13. The LBNL Water Heater Retail Price Database

    E-Print Network [OSTI]

    Lekov, Alex; Glover, Julie; Lutz, Jim

    2000-01-01T23:59:59.000Z

    Olson, and Stuart Chaitkin (LBNL). We also want to thank ourand Mithra Moezzi, also of LBNL. This work was supported byLBNL – 44749 The LBNL Water Heater Retail Price Database

  14. 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

  15. Grays Harbor PUD- Solar Water Heater Loan

    Broader source: Energy.gov [DOE]

    Since October 2001, Grays Harbor PUD has offered a low-interest loan program (currently 4.0%) for the installation of solar water heaters. Loans are available for the installation of solar...

  16. Grays Harbor PUD- Solar Water Heater Rebate

    Broader source: Energy.gov [DOE]

    Since October 2001, Grays Harbor PUD has offered a rebate program for the installation of solar water heaters. Rebates of $600 are available for the installation of solar collectors of 40 square...

  17. Approved Space Heaters In order to ensure that all space heaters meet current safety guidelines, the University Fire Department

    E-Print Network [OSTI]

    Holsinger, Kent

    EHS 1/2012 Approved Space Heaters In order to ensure that all space heaters meet current safety approved a limited selection of space heaters for use within the University, which are available at Central Stores. The following Space Heaters are approved for use in University of Connecticut buildings provided

  18. Reducing NOx in Fired Heaters and Boilers

    E-Print Network [OSTI]

    Garg, A.

    -6, 2000 Reducing NOx in Fired Heaters Air Pollution Control and Boilers Keeping the environment clean Presented by Ashutosh Garg Furnace Improvements Low cost solutions for fired heaters Trace compounds ? Nitric oxides ? Carbon monoxide ? Sulfur... it is essential to estimate accurately baseline NOx emissions. ? This will establish each units current compliance status. ? Emissions ? Current excess air level ? Carbon monoxide ? Combustibles ? NOx corrected to 3% 02 314 ESL-IE-00-04-46 Proceedings...

  19. Diesel particulate filter with zoned resistive heater

    SciTech Connect (OSTI)

    Gonze, Eugene V [Pinckney, MI

    2011-03-08T23:59:59.000Z

    A diesel particulate filter assembly comprises a diesel particulate filter (DPF) and a heater assembly. The DPF filters a particulate from exhaust produced by an engine. The heater assembly has a first metallic layer that is applied to the DPF, a resistive layer that is applied to the first metallic layer, and a second metallic layer that is applied to the resistive layer. The second metallic layer is etched to form a plurality of zones.

  20. Dampers for Natural Draft Heaters: Technical Report

    SciTech Connect (OSTI)

    Lutz, James D.; Biermayer, Peter; King, Derek

    2008-10-27T23:59:59.000Z

    Energy required for water heating accounts for approximately 40percent of national residential natural gas consumption in California. With water heating contributing such a substantial portion of natural gas consumption, it is important to pay attention to water heater efficiencies. This paper reports on an investigation of a patented, buoyancy-operated flue damper. It is an add-on design to a standard atmospherically vented natural-draft gas-fired storage water heater. The flue damper was expected to reduce off-cycle standby losses, which would lead to improvements in the efficiency of the water heater. The test results showed that the Energy Factor of the baseline water heater was 0.576. The recovery efficiency was 0.768. The standby heat loss coefficient was 10.619 (BTU/hr-oF). After the damper was installed, the test results show an Energy Factor for the baseline water heater of 0.605. The recovery efficiency was 0.786. The standby heat loss coefficient was 9.135 (BTU/hr-oF). The recovery efficiency increased 2.3percent and the standby heat loss coefficient decreased 14percent. When the burner was on, the baseline water heater caused 28.0 CFM of air to flow from the room. During standby, the flow was 12.4 CFM. The addition of the damper reduced the flow when the burner was on to 23.5 CFM. During standby, flow with the damper was reduced to 11.1 CFM. The flue damper reduced off-cycle standby losses, and improved the efficiency of the water heater. The flue damper also improved the recovery efficiency of the water heater by restricting on-cycle air flows through the flue.With or without the flue damper, off-cycle air flow upthe stack is nearly half the air flow rate as when the burner is firing.

  1. Phase change material storage heater

    DOE Patents [OSTI]

    Goswami, D. Yogi (Gainesville, FL); Hsieh, Chung K. (Gainesville, FL); Jotshi, Chand K. (Gainesville, FL); Klausner, James F. (Gainesville, FL)

    1997-01-01T23:59:59.000Z

    A storage heater for storing heat and for heating a fluid, such as water, has an enclosure defining a chamber therein. The chamber has a lower portion and an upper portion with a heating element being disposed within the enclosure. A tube through which the fluid flows has an inlet and an outlet, both being disposed outside of the enclosure, and has a portion interconnecting the inlet and the outlet that passes through the enclosure. A densely packed bed of phase change material pellets is disposed within the enclosure and is surrounded by a viscous liquid, such as propylene glycol. The viscous liquid is in thermal communication with the heating element, the phase change material pellets, and the tube and transfers heat from the heating element to the pellets and from the pellets to the tube. The viscous fluid has a viscosity so that the frictional pressure drop of the fluid in contact with the phase change material pellets substantially reduces vertical thermal convection in the fluid. As the fluid flows through the tube heat is transferred from the viscous liquid to the fluid flowing through the tube, thereby heating the fluid.

  2. Preliminary Modeling, Testing and Analysis of a Gas Tankless Water Heater

    SciTech Connect (OSTI)

    Burch, J.; Thornton, J.; Hoeschele, M.; Springer, D.; Rudd, A.

    2008-01-01T23:59:59.000Z

    Tankless water heaters offer significant energy savings over conventional storage-tank water heaters, because thermal losses to the environment are much less. Although standard test results are available to compare tankless heaters with storage tank heaters, actual savings depend on the draw details because energy to heat up the internal mass depends on the time since the last draw. To allow accurate efficiency estimates under any assumed draw pattern, a one-node model with heat exchanger mass is posed here. Key model parameters were determined from test data. Burner efficiency showed inconsistency between the two data sets analyzed. Model calculations show that efficiency with a realistic draw pattern is {approx}8% lower than that resulting from using only large {approx}40 liter draws, as specified in standard water-heater tests. The model is also used to indicate that adding a small tank controlled by the tankless heater ameliorates unacceptable oscillations that tankless with feedback control can experience with pre-heated water too hot for the minimum burner setting. The added tank also eliminates problematic low-flow cut-out and hot-water-delay, but it will slightly decrease efficiency. Future work includes model refinements and developing optimal protocols for parameter extraction.

  3. Economics of Condensing Gas Furnaces and Water Heaters Potential in Residential Single Family Homes

    E-Print Network [OSTI]

    Lekov, Alex

    2011-01-01T23:59:59.000Z

    Star Residential Water Heaters: Final criteria analysis.2004. Heat pump water heater technology: Experiences ofmarket research on solar water heaters. National Renewable

  4. Economics of residential gas furnaces and water heaters in United States new construction market

    E-Print Network [OSTI]

    Lekov, Alex B.

    2010-01-01T23:59:59.000Z

    2004). Heat pump water heater technology: Experiences ofStar Residential Water Heaters: Final criteria analysis.market research on solar water heaters. National Renewable

  5. Economics of residential gas furnaces and water heaters in US new construction market

    E-Print Network [OSTI]

    Lekov, Alex B.; Franco, Victor H.; Wong-Parodi, Gabrielle; McMahon, James E.; Chan, Peter

    2010-01-01T23:59:59.000Z

    al. (2004). Heat pump water heater technology: Experiencesstar residential water heaters: Final criteria analysis.market research on solar water heaters. National Renew- able

  6. Economics of Condensing Gas Furnaces and Water Heaters Potential in Residential Single Family Homes

    E-Print Network [OSTI]

    Lekov, Alex

    2011-01-01T23:59:59.000Z

    develop condensing gas storage water heaters to qualify forgas furnace and gas storage water heater. This study focusesis predominantly storage water heaters. Regionally, gas-

  7. San Isabel Electric Association- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    San Isabel Electric Association (SIEA) provides incentives for its residential customers to install energy efficient equipment. Rebates are available for certain water heaters, washers, dryers,...

  8. Yellowstone Valley Electric Cooperative- Residential/Commercial Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    The Yellowstone Valley Electric Cooperative offers rebates to residential and commercial members for purchasing energy efficient add-on heat pumps, geothermal heat pumps, water heaters, dishwashers...

  9. FROM: Keith Dennis, National Rural Electric Cooperative Association...

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

    standards for large (>55 gallon) residential electric storage water heaters used in demand response and thermal energy storage programs (Docket No. EERE-2012-BT-STD-0022). In...

  10. Central New Mexico Electric Cooperative- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Central New Mexico Electric Cooperative (CNMEC) provides an incentive for its residential members to purchase energy efficient water heaters, clothes washers, dishwashers, refrigerators, and...

  11. Performance characterization of a hydrogen catalytic heater.

    SciTech Connect (OSTI)

    Johnson, Terry Alan; Kanouff, Michael P.

    2010-04-01T23:59:59.000Z

    This report describes the performance of a high efficiency, compact heater that uses the catalytic oxidation of hydrogen to provide heat to the GM Hydrogen Storage Demonstration System. The heater was designed to transfer up to 30 kW of heat from the catalytic reaction to a circulating heat transfer fluid. The fluid then transfers the heat to one or more of the four hydrogen storage modules that make up the Demonstration System to drive off the chemically bound hydrogen. The heater consists of three main parts: (1) the reactor, (2) the gas heat recuperator, and (3) oil and gas flow distribution manifolds. The reactor and recuperator are integrated, compact, finned-plate heat exchangers to maximize heat transfer efficiency and minimize mass and volume. Detailed, three-dimensional, multi-physics computational models were used to design and optimize the system. At full power the heater was able to catalytically combust a 10% hydrogen/air mixture flowing at over 80 cubic feet per minute and transfer 30 kW of heat to a 30 gallon per minute flow of oil over a temperature range from 100 C to 220 C. The total efficiency of the catalytic heater, defined as the heat transferred to the oil divided by the inlet hydrogen chemical energy, was characterized and methods for improvement were investigated.

  12. Creep failure of cracking heater at a petrochemical plant

    SciTech Connect (OSTI)

    El-Batahgy, A. [Welding Research Department, Central, Metallurgical R and D Institute, Cairo (Egypt)]. E-mail: elbatahgy@yahoo.com; Zaghloul, B. [Central Metallurgical R and D Institute, P.O. Box: 87 Helwan, Cairo (Egypt)

    2005-03-15T23:59:59.000Z

    After two and half years of operation, a bend tube in a cracking heater at an ethylene plant failed due to creep cracking. Creep damage occurred as a result of metallurgical instability including coarsening of carbides that caused softening and initiation of voids or wedge-type intergranular cracks. This was accelerated due to increasing inner surface temperature during decoking process. Thermal fatigue contributed to the failure as a result of temperature variations due to several shutdown-startup operations. To minimize such failure in futures, periodic inspection to monitor crack formation was scheduled. Nondestructive tests including dye penetrant test for surface cracking and radiographic test for internal crack were implemented.

  13. Development of an Accurate Feed-Forward Temperature Control Tankless Water Heater

    SciTech Connect (OSTI)

    David Yuill

    2008-06-30T23:59:59.000Z

    The following document is the final report for DE-FC26-05NT42327: Development of an Accurate Feed-Forward Temperature Control Tankless Water Heater. This work was carried out under a cooperative agreement from the Department of Energy's National Energy Technology Laboratory, with additional funding from Keltech, Inc. The objective of the project was to improve the temperature control performance of an electric tankless water heater (TWH). The reason for doing this is to minimize or eliminate one of the barriers to wider adoption of the TWH. TWH use less energy than typical (storage) water heaters because of the elimination of standby losses, so wider adoption will lead to reduced energy consumption. The project was carried out by Building Solutions, Inc. (BSI), a small business based in Omaha, Nebraska. BSI partnered with Keltech, Inc., a manufacturer of electric tankless water heaters based in Delton, Michigan. Additional work was carried out by the University of Nebraska and Mike Coward. A background study revealed several advantages and disadvantages to TWH. Besides using less energy than storage heaters, TWH provide an endless supply of hot water, have a longer life, use less floor space, can be used at point-of-use, and are suitable as boosters to enable alternative water heating technologies, such as solar or heat-pump water heaters. Their disadvantages are their higher cost, large instantaneous power requirement, and poor temperature control. A test method was developed to quantify performance under a representative range of disturbances to flow rate and inlet temperature. A device capable of conducting this test was designed and built. Some heaters currently on the market were tested, and were found to perform quite poorly. A new controller was designed using model predictive control (MPC). This control method required an accurate dynamic model to be created and required significant tuning to the controller before good control was achieved. The MPC design was then implemented on a prototype heater that was being developed simultaneously with the controller development. (The prototype's geometry and components are based on a currently marketed heater, but several improvements have been made.) The MPC's temperature control performance was a vast improvement over the existing controller. With a benchmark for superior control performance established, five additional control methods were tested. One problem with MPC control is that it was found to be extremely difficult to implement in a TWH, so that it is unlikely to be widely adopted by manufacturers. Therefore the five additional control methods were selected based on their simplicity; each could be implemented by a typical manufacturer. It was found that one of these methods performed as well as MPC, or even better under many circumstances. This method uses a Feedback-Compensated Feed-Forward algorithm that was developed for this project. Due to its simplicity and excellent performance this method was selected as the controller of choice. A final higher-capacity prototype heater that uses Feedback-Compensated Feed-Forward control was constructed. This prototype has many improvements over the currently marketed heaters: (1) excellent control; (2) a modular design that allows for different capacity heaters to be built easily; (3) built-in fault detection and diagnosis; (4) a secondary remote user-interface; and (5) a TRIAC switching algorithm that will minimize 'flicker factor'. The design and engineering of this prototype unit will allow it to be built without an increase in cost, compared with the currently marketed heater. A design rendering of the new product is shown below. It will be launched with a new marketing campaign by Keltech in early 2009.

  14. Kirkwood Electric- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Kirkwood Electric offers rebates to its residential customers who install energy-efficient heat pumps and electric hot water heaters in their new and existing homes. Customers will be given a...

  15. Field Performance of Heat Pump Water Heaters in the Northeast, Massachusetts and Rhode Island (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-12-01T23:59:59.000Z

    Heat pump water heaters (HPWHs) are finally entering the mainstream residential water heater market. Potential catalysts are increased consumer demand for higher energy efficiency electric water heating and a new Federal water heating standard that effectively mandates use of HPWHs for electric storage water heaters with nominal capacities greater than 55 gallons. When compared to electric resistance water heating, the energy and cost savings potential of HPWHs is tremendous. Converting all electric resistance water heaters to HPWHs could save American consumers 7.8 billion dollars annually ($182 per household) in water heating operating costs and cut annual residential source energy consumption for water heating by 0.70 quads. Steven Winter Associates, Inc. embarked on one of the first in situ studies of these newly released HPWH products through a partnership with two sponsoring electric utility companies, National Grid and NSTAR, and one sponsoring energy efficiency service program administrator, Cape Light Compact. Recent laboratory studies have measured performance of HPWHs under various operating conditions, but publicly available field studies have not been as available. This evaluation attempts to provide publicly available field data on new HPWHs by monitoring the performance of three recently released products (General Electric GeoSpring, A.O. Smith Voltex, and Stiebel Eltron Accelera 300). Fourteen HPWHs were installed in Massachusetts and Rhode Island and monitored for over a year. Of the 14 units, ten were General Electric models (50 gallon units), two were Stiebel Eltron models (80 gallon units), and two were A.O. Smith models (one 60-gallon and one 80-gallon unit).

  16. Lid heater for glass melter

    DOE Patents [OSTI]

    Phillips, Terrance D. (617 Chestnut Ct., Aiken, SC 29803)

    1993-01-01T23:59:59.000Z

    A glass melter having a lid electrode for heating the glass melt radiantly. The electrode comprises a series of INCONEL 690 tubes running above the melt across the melter interior and through the melter walls and having nickel cores inside the tubes beginning where the tubes leave the melter interior and nickel connectors to connect the tubes electrically in series. An applied voltage causes the tubes to generate heat of electrical resistance for melting frit injected onto the melt. The cores limit heat generated as the current passes through the walls of the melter. Nickel bus connection to the electrical power supply minimizes heat transfer away from the melter that would occur if standard copper or water-cooled copper connections were used between the supply and the INCONEL 690 heating tubes.

  17. Lid heater for glass melter

    DOE Patents [OSTI]

    Phillips, T.D.

    1993-12-14T23:59:59.000Z

    A glass melter having a lid electrode for heating the glass melt radiantly. The electrode comprises a series of INCONEL 690 tubes running above the melt across the melter interior and through the melter walls and having nickel cores inside the tubes beginning where the tubes leave the melter interior and nickel connectors to connect the tubes electrically in series. An applied voltage causes the tubes to generate heat of electrical resistance for melting frit injected onto the melt. The cores limit heat generated as the current passes through the walls of the melter. Nickel bus connection to the electrical power supply minimizes heat transfer away from the melter that would occur if standard copper or water-cooled copper connections were used between the supply and the INCONEL 690 heating tubes. 3 figures.

  18. Energy Efficiency Design Options for Residential Water Heaters: Economic Impacts on Consumers

    E-Print Network [OSTI]

    Lekov, Alex

    2011-01-01T23:59:59.000Z

    of a Drop-In Heat Pump Water Heater, Oak Ridge National Lab.CA. Maxwell, J. 2004. Heat Pump Water Heater Economic Model.water heaters. For heat pump water heaters, the study also

  19. Vapor canister heater for evaporative emissions systems

    SciTech Connect (OSTI)

    Bishop, R.P.; Berg, P.G.

    1987-01-01T23:59:59.000Z

    Automotive evaporative emissions systems use a charcoal canister to store evaporative hydrocarobn emissions. These stored vapors are later purged and burned during engine operation. Under certain conditions the engine cannot completely purge the canister of the stored fuel vapors, which results in a decreased vapor storage capacity in the canister. A self-regulating PTC (Positive Temperature Coefficient) heater has been developed to warm the purge air as it enters the canister, in order to provide thermal energy for increased release of the vapors from charcoal sites. This paper describes the construction and operation of the vapor canister heater as it relates to improved evaporative emission system performance.

  20. Regenerative Boiler Feedwater Heater Economics

    E-Print Network [OSTI]

    Viar, W. L.

    O- REFEREWCE (,\\SI:: J CURRENT CASE I CHANGE INCR or DEeR 7JTAL FUEL M 10?E. BTU/HR 842.44 827. 9~ -14.50 .i) .. ft!::.::r COUPLED SHAFT P()I,oIER 8HP 4700 4700 0 TuTAl ELECTRICAL GENERATION 8AC... PRESSURE TURBINES CONDENSING TURBI HES 5TE...

  1. Advances in the Research of Heat Pump Water Heaters

    E-Print Network [OSTI]

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

    2006-01-01T23:59:59.000Z

    This paper presents the progress of many recently correlative research works on the heat pump water heater (HPWH) and on solar-assisted heat pump water heaters. The advances in the research on compressor development, alternative refrigerant...

  2. Heat Pump Water Heater using Solid-State Energy Converters |...

    Energy Savers [EERE]

    Heat Pump Water Heater using Solid-State Energy Converters Heat Pump Water Heater using Solid-State Energy Converters Sheetak will work on developing a full scale prototype of its...

  3. Design, Stress Analysis and Operating Experience in Feedwater Heaters

    E-Print Network [OSTI]

    Singh, K. P.; Libs, T.

    1980-01-01T23:59:59.000Z

    The performance of feedwater heaters has a direct bearing on the thermal efficiency of the plant. A typical feedwater heater may have three distinct regions of heat transfer, namely desuperheating, condensing and subcooling zones. The design...

  4. Outdoor Outfitter Gets Greener With Solar Water Heater | Department...

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

    Outdoor Outfitter Gets Greener With Solar Water Heater Outdoor Outfitter Gets Greener With Solar Water Heater October 8, 2010 - 12:51pm Addthis L.L. Beans flagship store sees...

  5. Solar Water Heater Rebate Program (U.S. Virgin Islands)

    Broader source: Energy.gov [DOE]

    The Virgin Islands Energy Office currently offers rebates to residents for purchasing solar water heaters from local vendors. The program will cover residential, solar water heaters of 120 gallons...

  6. TVA Partner Utilities- Energy Right Water Heater Program

    Broader source: Energy.gov [DOE]

    The TVA energy right Water Heater Plan promotes the installation of high efficiency water heaters in homes and small businesses. TVA provides a $50 incentive to local power companies for each...

  7. TVA Partner Utilities- Energy Right Water Heater Program

    Broader source: Energy.gov [DOE]

    The Tennessee Valley Authority (TVA) energy right Water Heater Plan promotes the installation of high efficiency water heaters in homes and small businesses. TVA provides a $50 incentive to local...

  8. TVA Partner Utilities- Energy Right' Water Heater Program

    Broader source: Energy.gov [DOE]

    The TVA energy right Water Heater Plan promotes the installation of high efficiency water heaters in homes and small businesses. TVA provides a $50 incentive to local power companies for each...

  9. NREL Tests Integrated Heat Pump Water Heater Performance in Different Climates (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-01-01T23:59:59.000Z

    This technical highlight describes NREL tests to capture information about heat pump performance across a wide range of ambient conditions for five heat pump water heaters (HPWH). These water heaters have the potential to significantly reduce water heater energy use relative to traditional electric resistance water heaters. These tests have provided detailed performance data for these appliances, which have been used to evaluate the cost of saved energy as a function of climate. The performance of HPWHs is dependent on ambient air temperature and humidity and the logic controlling the heat pump and the backup resistance heaters. The laboratory tests were designed to measure each unit's performance across a range of air conditions and determine the specific logic controlling the two heat sources, which has a large effect on the comfort of the users and the energy efficiency of the system. Unlike other types of water heaters, HPWHs are both influenced by and have an effect on their surroundings. Since these effects are complex and different for virtually every house and climate region, creating an accurate HPWH model from the data gathered during the laboratory tests was a main goal of the project. Using the results from NREL's laboratory tests, such as the Coefficient of Performance (COP) curves for different air conditions as shown in Figure 1, an existing HPWH model is being modified to produce more accurate whole-house simulations. This will allow the interactions between the HPWH and the home's heating and cooling system to be evaluated in detail, for any climate region. Once these modeling capabilities are in place, a realistic cost-benefit analysis can be performed for a HPWH installation anywhere in the country. An accurate HPWH model will help to quantify the savings associated with installing a HPWH in the place of a standard electric water heater. In most locations, HPWHs are not yet a cost-effective alternative to natural gas water heaters. The detailed system performance maps that were developed by this testing program will be used to: (1) Target regions of the country that would benefit most from this technology; (2) Identify improvements in current systems to maximize homeowner cost savings; and (3) Explore opportunities for development of advanced hot water heating systems.

  10. Evaluation of TANK water heater simulation model as embedded in HWSim

    E-Print Network [OSTI]

    Lutz, Jim

    2012-01-01T23:59:59.000Z

    flue natural gas storage water heaters. Battelle developedthe water in a storage water heater is cooling off and

  11. NREL Evaluates Performance of Heat Pump Water Heaters (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-02-01T23:59:59.000Z

    NREL evaluates energy savings potential of heat pump water heaters in homes throughout all U.S. climate zones.

  12. 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://to-unit comparisons of tank versus tankless water heaters.Energy Use MJ/(unit*year) Tank Tankless MJ/(unit*year) Tank

  13. Preliminary Modeling, Testing, and Analysis of a Gas Tankless Water Heater: Preprint

    SciTech Connect (OSTI)

    Burch, J.; Hoeschele, M.; Springer, D.; Rudd, A.

    2008-05-01T23:59:59.000Z

    Today's gas tankless water heaters offer significant energy savings over conventional gas storage tank water heaters, but savings depends on the draw pattern. A one-node model incorporating heat exchanger mass is used to address this and other issues. Key model parameters are determined from least-squares regression on short-term data, including burner efficiency, thermal capacitance, and thermal loss coefficient. The calibrated model agrees with data to ~5% on Qgas, with temperature RMS deviation of ~4..deg..C. Efficiency with a standard realistic draw is 71%, compared to 81% predicted from standard energy-factors. Adding a small tank controlled by the tankless heater solves issues of oscillations with solar pre-heat, low-flow and hot-water-delay issues. Future work includes model refinements and developing optimal data protocols for model parameter extraction.

  14. Fired heater for coal liquefaction process

    DOE Patents [OSTI]

    Ying, David H. S. (Macungie, PA)

    1984-01-01T23:59:59.000Z

    A fired heater for a coal liquefaction process is constructed with a heat transfer tube having U-bends at regular intervals along the length thereof to increase the slug frequency of the multi-phase mixture flowing therethrough to thereby improve the heat transfer efficiency.

  15. Water Heaters | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectric Coop,Save EnergyGlouster,Winside,Warren County Rural EHeaters Jump to:

  16. AWSWAH - the heat pipe solar water heater

    SciTech Connect (OSTI)

    Akyurt, M.

    1986-01-01T23:59:59.000Z

    An all weather heat pipe solar water heater (AWSWAH) comprising a collector of 4 m/sup 2/ (43 ft/sup 2/) and a low profile water tank of 160 liters (42 gal.) was developed. A single heat pipe consisting of 30 risers and two manifolds in the evaporator and a spiral condenser was incorporated into the AWSWAH. Condensate metering was done by synthetic fiber wicks. The AWSWAH was tested alongside two conventional solar water heaters of identical dimensions, an open loop system and a closed loop system. It was found that the AWSWAH was an average of 50% more effective than the open system in the temperature range 30-90 /sup 0/C (86-194 /sup 0/F). The closed loop system was the least efficient of the three systems.

  17. How Control Improvements Save Process Heater Fuel

    E-Print Network [OSTI]

    Dukelow, S. G.

    1979-01-01T23:59:59.000Z

    such use can be expected. Process Heater Combustion Control Systems The recommended approach today differs only in detail from a combustion control system installed on a process heater in 1946 at Shell Oil Co., Wood River Refinery. In their 1948 paper... Net + 15% Excess Natural Gas 7.18 7.88 9.06 ., (l000 Btu) Refinery Gas 7.21 7.84 9.02 (l600 Btu) Fuel Oil No. 6 7.31 7.75 8.91 (18,000 Btu) Coal 7.56 7.79 8.96 (11,500 Btu) 184 ESL-IE-79-04-20 Proceedings from the First Industrial Energy...

  18. Covered Product Category: Residential Whole-Home Gas Tankless Water Heaters

    Broader source: Energy.gov [DOE]

    FEMP provides acquisition guidance across a variety of product categories, including whole-home gas tankless water heaters, which are an ENERGY STAR®-qualified product category. Federal laws and requirements mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law.

  19. A performance correlation of horizontal solar heaters

    E-Print Network [OSTI]

    Gopffarth, Wilford Hugo

    1964-01-01T23:59:59.000Z

    A PERFORMANCE CORRELATION OF HORIZONTAL SOLAR HEATERS A Thesis by WILFORD HUGO GOPFFARTH Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 1964... Major Subject: Chemical Engineering ABSTRACT The purpose of this work was to determine design parameters for flat plastic covered solar collectors. First, the transmittance ? absorp- tion product as a function of the angle of incidence was determined...

  20. 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.

  1. Ashland Electric Utility- Bright Way to Heat Water Loan

    Broader source: Energy.gov [DOE]

    The City of Ashland Conservation Division offers a solar water heating program to residential electric customers who currently use an electric water heater. Under "The Bright Way to Heat Water...

  2. Ashland Electric Utility- Bright Way to Heat Water Rebate

    Broader source: Energy.gov [DOE]

    The City of Ashland Conservation Division offers a solar water heating program to its residential electric customers who currently use an electric water heater. Under "The Bright Way to Heat Water...

  3. Development of a Low Cost Heat Pump Water Heater - Second Prototype

    SciTech Connect (OSTI)

    Mei, V. C. [Oak Ridge National Laboratory (Retired); Craddick, William G [ORNL

    2007-09-01T23:59:59.000Z

    Since the 1980s various attempts have been made to apply the efficiency of heat pumps to water heating. The products generated in the 80s and 90s were not successful, due in part to a lack of reliability and difficulties with installation and servicing. At the turn of the century, EnvironMaster International (EMI) produced a heat pump water heater (HPWH) based on a design developed by Arthur D. Little (ADL), with subsequent developmental assistance from Oak Ridge National Laboratory (ORNL) and ADL. This design was a drop-in replacement for conventional electric water heaters. In field and durability testing conducted by ORNL, it proved to be reliable and saved on average more than 50% of the energy used by the best conventional electric water heater. However, the retail price set by EMI was very high, and it failed in the market. ORNL was tasked to examine commercially available HPWH product technology and manufacturing processes for cost saving opportunities. Several cost saving opportunities were found. To verify the feasibility of these cost saving measures, ORNL completed a conceptual design for an HPWH based on an immersed condenser coil that could be directly inserted into a standard water tank through a sleeve affixed to one of the standard penetrations at the top of the tank. After some experimentation, a prototype unit was built with a double-wall coil inserted into the tank. When tested it achieved an energy factor (EF) of 2.12 to 2.2 using DOE-specified test procedures. A.O. Smith contacted ORNL in May 2006 expressing their interest in the ORNL design. The prototype unit was shipped to A.O. Smith to be tested in their laboratory. After they completed their test, ORNL analyzed the raw test data provided by A.O. Smith and calculated the EF to be approximately 1.92. The electric resistance heating elements of a conventional electric water heater are typically retained in a heat pump water heater to provide auxiliary heating capacity in periods of high demand. A.O. Smith informed us that when they applied electric resistance backup heating, using the criterion that resistance heat would be applied whenever the upper thermostat saw water temperatures below the heater s nominal setpoint of 135oF, they found that the EF dropped to approximately 1.5. This is an extremely conservative criterion for backup resistance heating. In a field test of the previously mentioned EMI heat pump water heater, residential consumers found satisfactory performance when the criterion for use of electric resistance backup heating was the upper temperature dropping below the set point minus 27 degrees. Applying this less conservative criterion to the raw data from the original A.O. Smith EF tests indicates that electric resistance heating would never have come on during the test, and thus the EF would have remained in the vicinity of 1.9. A.O. Smith expressed concern about having an EF below 2, as that value triggers certain tax advantages and would assist in their marketing of the product. We believe that insertion of additional length of tubing plus a less conservative set point for electric resistance backup heating would remedy this concern. However, as of this writing, A.O. Smith has not decided to proceed with a commercial product.

  4. Effect of Fuel Wobbe Number on Pollutant Emissions from Advanced Technology Residential Water Heaters: Results of Controlled Experiments

    E-Print Network [OSTI]

    Rapp, VH

    2014-01-01T23:59:59.000Z

    Emissions from Residential Water Heaters Table of Contents46 Table 10. Storage water heaters evaluated experimentally50 Table 11. Published information for water heater

  5. Feasibility of Using Measurements of Internal Components of Tankless Water Heaters for Field Monitoring of Energy and Water Use

    E-Print Network [OSTI]

    Lutz, Jim

    2008-01-01T23:59:59.000Z

    Test Procedures for Water Heaters; Final Rule," FederalTesting of Tankless Gas Water Heater Performance," DavisInc. , "T-K2 Instantaneous Water Heater Installation Manual

  6. NREL Develops Heat Pump Water Heater Simulation Model (Fact Sheet)

    SciTech Connect (OSTI)

    Hudon, K.

    2012-05-01T23:59:59.000Z

    A new simulation model helps researchers evaluate real-world impacts of heat pump water heaters in U.S. homes.

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

    E-Print Network [OSTI]

    Franco, Victor

    2011-01-01T23:59:59.000Z

    the indirect increase in home heating (and the decrease inincrease the home’s heating load in the heating season (Heaters, Direct Heating Equipment, Mobile Home Furnaces,

  8. Diesel particulate filter (DPF) regeneration by electrical heating of resistive coatings

    DOE Patents [OSTI]

    Williamson, Weldon S. (Malibu, CA); Gonze, Eugene V. (Pinckney, MI)

    2008-12-30T23:59:59.000Z

    An exhaust system that processes exhaust generated by an engine includes a diesel particulate filter (DPF) that is disposed downstream of the engine and that filters particulates from the exhaust. An electrical heater is integrally formed in an upstream end of the DPF and selectively heats the exhaust to initiate combustion of the particulates within the exhaust as it passes therethrough. Heat generated by combustion of the particulates induces combustion of particulates within the DPF.

  9. Berkeley Electric Cooperative- Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Berkeley Electric Cooperative (BEC) offers several rebates to residential customers for energy efficiency upgrades. The H2O Advantage Water Heater Rebate Program offers a rebate of up to $300 for...

  10. Gas Swimming Pool Heaters | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy UsageAUDITVehicles »Exchange Visitors ProgramEnergyGas Swimming Pool Heaters Gas

  11. Heat Pump Water Heaters | 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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun with Bigfront.jpgcommunity200cell 9HarveyWellnessFebruaryWater Heaters Heat

  12. ELECTRIC

    Office of Legacy Management (LM)

    you nay give us will be greatly uppreckted. VPry truly your23, 9. IX. Sin0j3, Mtinager lclectronics and Nuclear Physics Dept. omh , WESTINGHOUSE-THE NAT KING IN ELECTRICITY...

  13. Generator powered electrically heated diesel particulate filter

    DOE Patents [OSTI]

    Gonze, Eugene V; Paratore, Jr., Michael J

    2014-03-18T23:59:59.000Z

    A control circuit for a vehicle powertrain includes a switch that selectivity interrupts current flow between a first terminal and a second terminal. A first power source provides power to the first terminal and a second power source provides power to the second terminal and to a heater of a heated diesel particulate filter (DPF). The switch is opened during a DPF regeneration cycle to prevent the first power source from being loaded by the heater while the heater is energized.

  14. Aiken Electric Cooperative Inc - Residential Water Heater Rebate Program |

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

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists' ResearchThe Office ofReportingEnergyRetrospective Plan

  15. Covered Product Category: Residential Electric Resistance Water Heaters |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in Review: Top FiveDepartmentfor EngineeringDepartment ofBoilersDataHotof EnergyDepartment

  16. Georgia Power- Residential Solar and Heat Pump Water Heater Rebate (Georgia)

    Broader source: Energy.gov [DOE]

    Georgia Power customers may be eligible for rebates up to $250 each toward the installation costs of a 50 gallon or greater solar water heater or heat pump water heater. The solar water heater or...

  17. Energy Efficiency Design Options for Residential Water Heaters: Economic Impacts on Consumers

    E-Print Network [OSTI]

    Lekov, Alex

    2011-01-01T23:59:59.000Z

    of a Drop-In Heat Pump Water Heater, Oak Ridge National Lab.Clear Seas Research. 2006. Water Heater Study. Plumbing andJ. 2003. Incorporating Water Heater Replacement into the

  18. Evaluation of TANK water heater simulation model as embedded in HWSim

    E-Print Network [OSTI]

    Lutz, Jim

    2012-01-01T23:59:59.000Z

    LBNL # Evaluation of TANK water heater simulation model asEvaluation of TANK water heater simulation model as embeddedwater to be drawn from a water heater to meet a schedule of

  19. 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

    associated with the EU water heater test procedure loadEU test procedure for water heaters. Load No. Delivered Max.period to allow the water heater to adjust completely to

  20. Economics of residential gas furnaces and water heaters in United States new construction market

    E-Print Network [OSTI]

    Lekov, Alex B.

    2010-01-01T23:59:59.000Z

    furnaces and storage water heaters, finds that installing aAs shown in Table 2, storage water heaters in single-familya gas furnace and a gas storage water heater. This market is

  1. Economics of residential gas furnaces and water heaters in US new construction market

    E-Print Network [OSTI]

    Lekov, Alex B.; Franco, Victor H.; Wong-Parodi, Gabrielle; McMahon, James E.; Chan, Peter

    2010-01-01T23:59:59.000Z

    furnaces and storage water heaters, finds that installing aAs shown in Table 2, storage water heaters in single-familya gas furnace and a gas storage water heater. This market is

  2. Fuel cell system including a unit for electrical isolation of a fuel cell stack from a manifold assembly and method therefor

    DOE Patents [OSTI]

    Kelley; Dana A. (New Milford, CT), Farooque; Mohammad (Danbury, CT), Davis; Keith (Southbury, CT)

    2007-10-02T23:59:59.000Z

    A fuel cell system with improved electrical isolation having a fuel cell stack with a positive potential end and a negative potential, a manifold for use in coupling gases to and from a face of the fuel cell stack, an electrical isolating assembly for electrically isolating the manifold from the stack, and a unit for adjusting an electrical potential of the manifold such as to impede the flow of electrolyte from the stack across the isolating assembly.

  3. Research and development of a high efficiency gas-fired water heater. Volume 2. Task reports

    SciTech Connect (OSTI)

    Vasilakis, A.D.; Pearson, J.F.; Gerstmann, J.

    1980-01-01T23:59:59.000Z

    Design and development of a cost-effective high efficiency gas-fired water heater to attain a service efficiency of 70% (including the effect of exfiltration) and a service efficiency of 78% (excluding exfiltration) for a 75 GPD draw at a 90/sup 0/F temperature rise, with a stored water to conditioned air temperature difference of 80/sup 0/F, are described in detail. Based on concept evaluation, a non-powered natural draft water heater was chosen as the most cost-effective design to develop. The projected installed cost is $374 compared to $200 for a conventional unit. When the project water heater is compared to a conventional unit, it has a payback of 3.7 years and life cycle savings of $350 to the consumer. A prototype water heater was designed, constructed, and tested. When operated with sealed combustion, the unit has a service efficiency of 66.4% (including the effect of exfiltration) below a burner input of 32,000 Btu/h. In the open combustion configuration, the unit operated at a measured efficiency of 66.4% Btu/h (excluding exfiltration). This compares with a service efficiency of 51.3% for a conventional water heater and 61% for a conventional high efficiency unit capable of meeting ASHRAE 90-75. Operational tests showed the unit performed well with no evidence of stacking or hot spots. It met or exceeded all capacity or usage tests specified in the program test plan and met all emission goals. Future work will concentrate on designing, building, and testing pre-production units. It is anticipated that both sealed combustion and open draft models will be pursued.

  4. Economics of residential gas furnaces and water heaters in US new construction market

    E-Print Network [OSTI]

    Lekov, Alex B.; Franco, Victor H.; Wong-Parodi, Gabrielle; McMahon, James E.; Chan, Peter

    2010-01-01T23:59:59.000Z

    appliance_standards/residential/water_ pool_heaters_prelim_Star (2008). Energy star residential water heaters: Finalefficiency improvements for residential gas furnaces in the

  5. Solar Water Heater Roadmap Leads Path to Market Expansion (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-09-01T23:59:59.000Z

    Innovative strategy to reduce installed cost of solar water heater systems can rival conventional natural gas water heaters in the marketplace.

  6. Evaluation of TANK water heater simulation model as embedded in HWSim

    E-Print Network [OSTI]

    Lutz, Jim

    2012-01-01T23:59:59.000Z

    this scheme for operating TANK with HWSim is successful.LBNL # Evaluation of TANK water heater simulation model asCalifornia. Evaluation of TANK water heater simulation model

  7. Variably insulating portable heater/cooler

    DOE Patents [OSTI]

    Potter, Thomas F. (Denver, CO)

    1998-01-01T23:59:59.000Z

    A compact vacuum insulation panel comprising a chamber enclosed by two sheets of metal, glass-like spaces disposed in the chamber between the sidewalls, and a high-grade vacuum in the chamber includes apparatus and methods for enabling and disabling, or turning "on" and "off" the thermal insulating capability of the panel. One type of enabling and disabling apparatus and method includes a metal hydride for releasing hydrogen gas into the chamber in response to heat, and a hydrogen grate between the metal hydride and the chamber for selectively preventing and allowing return of the hydrogen gas to the metal hydride. Another type of enabling and disabling apparatus and method includes a variable emissivity coating on the sheets of metal in which the emissivity is controllably variable by heat or electricity. Still another type of enabling and disabling apparatus and method includes metal-to-metal contact devices that can be actuated to establish or break metal-to-metal heat paths or thermal short circuits between the metal sidewalls.

  8. Variably insulating portable heater/cooler

    DOE Patents [OSTI]

    Potter, T.F.

    1998-09-29T23:59:59.000Z

    A compact vacuum insulation panel is described comprising a chamber enclosed by two sheets of metal, glass-like spaces disposed in the chamber between the sidewalls, and a high-grade vacuum in the chamber includes apparatus and methods for enabling and disabling, or turning ``on`` and ``off`` the thermal insulating capability of the panel. One type of enabling and disabling apparatus and method includes a metal hydride for releasing hydrogen gas into the chamber in response to heat, and a hydrogen grate between the metal hydride and the chamber for selectively preventing and allowing return of the hydrogen gas to the metal hydride. Another type of enabling and disabling apparatus and method includes a variable emissivity coating on the sheets of metal in which the emissivity is controllably variable by heat or electricity. Still another type of enabling and disabling apparatus and method includes metal-to-metal contact devices that can be actuated to establish or break metal-to-metal heat paths or thermal short circuits between the metal sidewalls. 25 figs.

  9. Form ElectApp11 ELECTRICAL APPLIANCES

    E-Print Network [OSTI]

    Applebaum, David

    Form ElectApp11 ELECTRICAL APPLIANCES In accordance with Residence Regulation 14.2 (see Section Two. Permission to bring personal electrical items will not be unreasonably withheld, but will not be granted amplifiers electrical heaters cooking equipment such as deep fat fryers. (Please note that permitted cooking

  10. Form ElectApp13 ELECTRICAL APPLIANCES

    E-Print Network [OSTI]

    Applebaum, David

    Form ElectApp13 ELECTRICAL APPLIANCES In accordance with the Agreement Terms and Conditions clause to the Residence. Permission to bring personal electrical items will not be unreasonably withheld systems amplifiers electrical heaters cooking equipment such as deep fat fryers. (Please note

  11. Form ElectApp12 ELECTRICAL APPLIANCES

    E-Print Network [OSTI]

    Applebaum, David

    Form ElectApp12 ELECTRICAL APPLIANCES In accordance with Residence Regulation 15.2 (see Section Two. Permission to bring personal electrical items will not be unreasonably withheld, but will not be granted · amplifiers · electrical heaters · cooking equipment such as deep fat fryers. (Please note that permitted

  12. High Efficiency, Ultra-Low Emission, Integrated Process Heater System

    SciTech Connect (OSTI)

    Mason, Howard; Boral, Anindya; Chhotray, San; Martin, Matthew

    2006-06-19T23:59:59.000Z

    The team of TIAX LLC, ExxonMobil Research and Engineering Company, and Callidus Technologies, LLC conducted a six-year program to develop an ultra-low emission process heater burner and an advanced high efficiency heater design. This project addresses the critical need of process heater operators for reliable, economical emission reduction technologies to comply with stringent emission regulations, and for heater design alternatives that reduce process heater energy requirements without significant cost increase. The key project targets were NOx emissions of 10 ppm (@ 3% O2), and a heater thermal efficiency of 95 percent. The ultra low NOx burner was developed through a series of pilot-scale and field tests combined with computational fluid dynamic modeling to arrive at simultaneous low emissions and suitable flame shape and stability. Pilot scale tests were run at TIAX, at the 2 MMBtu/hr scale, and at Callidus at 8 MMBtu/hr. The full scale burner was installed on a 14 burner atmospheric pipestill furnace at an ExxonMobil refinery. A variety of burner configurations, gas tips and flame stabilizers were tested to determine the lowest emissions with acceptable flame shape and stability. The resulting NOx emissions were 22 ppm on average. Starting in 2001, Callidus commercialized the original ultra low NOx burner and made subsequent design improvements in a series of commercial burners evolving from the original concept and/or development. Emissions in the field with the ultra low-NOx burner over a broad spectrum of heater applications have varied from 5 ppm to 30 ppm depending on heater geometry, heater service, fuel and firing capacity. To date, 1550 of the original burners, and 2500 of subsequent generation burners have been sold by Callidus. The advanced heater design was developed by parametric evaluations of a variety of furnace and combustion air preheater configurations and technologies for enhancing convective and radiative heat transfer. The design evolution relied heavily on computational fluid dynamic predictions of design alternatives. The final design features modular separate radiant cells, each with one and two-side fired vertical tubes. The convection section configuration is vertical tube banks enclosed in the radiant channels. Commercial modular plate air preheaters are used. The predicted performance for the integrated advanced heater and Callidus burner is 95 percent efficiency with 9 ppm NOx emissions firing natural gas, and 12 ppm firing refinery gas. The total erected cost is less than a conventional heater with combustion air preheat.

  13. 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

    energy multiplier Distribution losses Smart controls Wasted water Solar Heat pump water heater Australia/

  14. Commercial Gas Water Heaters, Purchasing Specifications for Energy-Efficient Products (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2010-09-01T23:59:59.000Z

    Performance and purchasing specifications for commercial gas water heaters under the FEMP-designated product program.

  15. Rock Hill Utilities- Water Heater and Heat Pump Rebate Program

    Broader source: Energy.gov [DOE]

    Through the SmartChoice program, Rock Hill Utilities offers rebates for water heater and heat pump replacements. Information on financing for heat pumps can also be found on the web site listed...

  16. An Analysis of Steam Process Heater Condensate Drainage Options

    E-Print Network [OSTI]

    Risko, J. R.

    The production and reliability performance of Steam Process Heaters can be significantly affected by the condensate drainage design that is employed. There are currently a variety of drainage options which can be confusing to a system designer who...

  17. Monitoring SERC Technologies: On-Demand Tankless Water Heaters

    Broader source: Energy.gov [DOE]

    A webinar by Ethan MacCormick, VP for Services to Energy Businesses at Performance Systems Development, about On-Demand Tankless Water Heaters and how to properly monitor the installation.

  18. New Home Buyer Solar Water Heater Trade-Off Study

    SciTech Connect (OSTI)

    Symmetrics Marketing Corporation

    1999-08-18T23:59:59.000Z

    This report details the results of a research conducted in 1998 and 1999 and outlines a marketing deployment plan designed for businesses interested in marketing solar water heaters in the new home industry.

  19. Heat Recovery Consideration for Process Heaters and Boilers

    E-Print Network [OSTI]

    Kumar, A.

    1984-01-01T23:59:59.000Z

    The largest single area for industrial energy conservation is in the improvement of combustion efficiencies for heaters and boilers. A number of methods can be employed to recover heat. The most common are by use of recuperative air preheaters...

  20. Heat Recovery Consideration for Process Heaters and Boilers

    E-Print Network [OSTI]

    Kumar, A.

    1983-01-01T23:59:59.000Z

    The largest single area for industrial energy conservation is in the improvement of combustion efficiencies for heaters and boilers. A number of methods can be employed to recover heat. The most common are by use of recuperative air preheaters...

  1. Marshall Municipal Utilities- Solar Thermal Water Heater Rebate Program

    Broader source: Energy.gov [DOE]

    Marshall Municipal Utilities (MMU) offers residential customers rebates for installing a ENERGY STAR Solar Thermal Water Heater. Rebates are based on the size of the system; MMU offers $20 per...

  2. Heat Pump Water Heater Technology Assessment Based on Laboratory Research and Energy Simulation Models: Preprint

    SciTech Connect (OSTI)

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

    2012-02-01T23:59:59.000Z

    This paper explores the laboratory performance of five integrated Heat Pump Water Heaters (HPWHs) across a wide range of operating conditions representative of US climate regions. Laboratory results demonstrate the efficiency of this technology under most of the conditions tested and show that differences in control schemes and design features impact the performance of the individual units. These results were used to understand current model limitations, and then to bracket the energy savings potential for HPWH technology in various US climate regions. Simulation results show that HPWHs are expected to provide significant energy savings in many climate zones when compared to other types of water heaters (up to 64%, including impact on HVAC systems).

  3. Application of high temperature air heaters to advanced power generation cycles

    SciTech Connect (OSTI)

    Thompson, T R [Tennessee Valley Authority, Chattanooga, TN (United States)] [Tennessee Valley Authority, Chattanooga, TN (United States); Boss, W H; Chapman, J N [Tennessee Univ., Tullahoma, TN (United States). Space Inst.] [Tennessee Univ., Tullahoma, TN (United States). Space Inst.

    1992-03-01T23:59:59.000Z

    Recent developments in ceramic composite materials open up the possibility of recuperative air heaters heating air to temperatures well above the feasible with metal tubes. A high temperature air heater (HTAH) has long been recognized as a requirement for the most efficient MHD plants in order to reach high combustor flame temperatures. The application of gas turbines in coal-fired plants of all types has been impeded because of the problems in cleaning exhaust gas sufficiently to avoid damage to the turbine. With a possibility of a HTAH, such plants may become feasible on the basis of air turbine cycles, in which air is compressed and heated in the HTAH before being applied to turbine. The heat exchanger eliminates the need for the hot gas cleanup system. The performance improvement potential of advanced cycles with HTAH application including the air turbine cycle in several variations such as the DOE program on ``Coal-Fired Air Furnace Combined Cycle...,`` variations originated by the authors, and the MHD combined cycle are presented. The status of development of ceramic air heater technology is included.

  4. Electric Springs A new Smart Grid Technology Department of Electrical & Electronic Engineering

    E-Print Network [OSTI]

    Leung, Ka-Cheong

    -scale wind and solar power generation · . 7 #12;Future power systems adopt "distributed" power generation electronics system. · · It can be embedded in an electric appliance such as electric water heater or refrigerator. · ( ) · Electric springs can therefore be `distributed" over the power grid to stablize the mains

  5. Butler Rural Electric Cooperative- Residential Rebate Program (Ohio)

    Broader source: Energy.gov [DOE]

    Butler Rural Electric Cooperative provides rebates for geothermal heat pumps, dual fuel heating systems, and water heaters. A $1,200 rebate is available to residential members that install a new...

  6. Trico Electric Cooperative- SunWatts Incentive Program

    Broader source: Energy.gov [DOE]

    Through the SunWatts Program, Trico Electric Cooperative offers residential and business customers a rebate for installing photovoltaic (PV) systems and solar water heaters. The up-front rebate for...

  7. Effect of Fuel Wobbe Number on Pollutant Emissions from Advanced Technology Residential Water Heaters: Results of Controlled Experiments

    SciTech Connect (OSTI)

    Rapp, VH; Singer, BC

    2014-03-01T23:59:59.000Z

    The research summarized in this report is part of a larger effort to evaluate the potential air quality impacts of using liquefied natural gas in California. A difference of potential importance between many liquefied natural gas blends and the natural gas blends that have been distributed in California in recent years is the higher Wobbe number of liquefied natural gas. Wobbe number is a measure of the energy delivery rate for appliances that use orifice- or pressure-based fuel metering. The effect of Wobbe number on pollutant emissions from residential water heaters was evaluated in controlled experiments. Experiments were conducted on eight storage water heaters, including five with “ultra low-NO{sub X}” burners, and four on-demand (tankless) water heaters, all of which featured ultra low-NO{sub X} burners. Pollutant emissions were quantified as air-free concentrations in the appliance flue and fuel-based emission factors in units of nanogram of pollutant emitter per joule of fuel energy consumed. Emissions were measured for carbon monoxide (CO), nitrogen oxides (NO{sub X}), nitrogen oxide (NO), formaldehyde and acetaldehyde as the water heaters were operated through defined operating cycles using fuels with varying Wobbe number. The reference fuel was Northern California line gas with Wobbe number ranging from 1344 to 1365. Test fuels had Wobbe numbers of 1360, 1390 and 1420. The most prominent finding was an increase in NO{sub X} emissions with increasing Wobbe number: all five of the ultra low-NO{sub X} storage water heaters and two of the four ultra low-NO{sub X} on-demand water heaters had statistically discernible (p<0.10) increases in NO{sub X} with fuel Wobbe number. The largest percentage increases occurred for the ultra low-NO{sub X} water heaters. There was a discernible change in CO emissions with Wobbe number for all four of the on-demand devices tested. The on-demand water heater with the highest CO emissions also had the largest CO increase with increasing fuel Wobbe number.

  8. Performance and energy costs associated with scaling infrared heater arrays for warming field plots from 1 to 100 m

    SciTech Connect (OSTI)

    Kimball B. A.; Lewin K.; Conley, M. M.

    2012-04-01T23:59:59.000Z

    To study the likely effects of global warming on open-field vegetation, hexagonal arrays of infrared heaters are currently being used for low-stature (<1 m) plants in small ({le}3 m) plots. To address larger ecosystem scales, herein we show that excellent uniformity of the warming can be achieved using nested hexagonal and rectangular arrays. Energy costs depend on the overall efficiency (useable infrared energy on the plot per electrical energy in), which varies with the radiometric efficiency (infrared radiation out per electrical energy in) of the individual heaters and with the geometric efficiency (fraction of thermal radiation that falls on useable plot area) associated with the arrangement of the heaters in an array. Overall efficiency would be about 26% at 4 ms{sup -1} wind speed for a single hexagonal array over a 3-m-diameter plot and 67% for a 199-hexagon honeycomb array over a 100-m-diameter plot, thereby resulting in an economy of scale.

  9. RDI's Wisdom Way Solar Village Final Report: Includes Utility Bill Analysis of Occupied Homes

    SciTech Connect (OSTI)

    Robb Aldrich, Steven Winter Associates

    2011-07-01T23:59:59.000Z

    In 2010, Rural Development, Inc. (RDI) completed construction of Wisdom Way Solar Village (WWSV), a community of ten duplexes (20 homes) in Greenfield, MA. RDI was committed to very low energy use from the beginning of the design process throughout construction. Key features include: 1. Careful site plan so that all homes have solar access (for active and passive); 2. Cellulose insulation providing R-40 walls, R-50 ceiling, and R-40 floors; 3. Triple-pane windows; 4. Airtight construction (~0.1 CFM50/ft2 enclosure area); 5. Solar water heating systems with tankless, gas, auxiliary heaters; 6. PV systems (2.8 or 3.4kWSTC); 7. 2-4 bedrooms, 1,100-1,700 ft2. The design heating loads in the homes were so small that each home is heated with a single, sealed-combustion, natural gas room heater. The cost savings from the simple HVAC systems made possible the tremendous investments in the homes' envelopes. The Consortium for Advanced Residential Buildings (CARB) monitored temperatures and comfort in several homes during the winter of 2009-2010. In the Spring of 2011, CARB obtained utility bill information from 13 occupied homes. Because of efficient lights, appliances, and conscientious home occupants, the energy generated by the solar electric systems exceeded the electric energy used in most homes. Most homes, in fact, had a net credit from the electric utility over the course of a year. On the natural gas side, total gas costs averaged $377 per year (for heating, water heating, cooking, and clothes drying). Total energy costs were even less - $337 per year, including all utility fees. The highest annual energy bill for any home evaluated was $458; the lowest was $171.

  10. 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.

  11. Ninety - Two Percent Minimum Heater Efficiency By 1980

    E-Print Network [OSTI]

    Mieth, H. C.; Hardie, J. E.

    1980-01-01T23:59:59.000Z

    exchangers used to transfer heat to tqe com- I bustion air are divided into two groups. IndiIlect ! heat exchangers called "regenerative" types an~ direct heat exchangers called "recuperative" types. In a regenerative air heater, heat is transferred i...~duced I draft, air preheat system. This system can ac~omodate either a regenerative or recuperative air heater and ! Fig. 5 - Heat recovery systems. 857 ESL-IE-80-04-157 Proceedings from the Second Industrial Energy Technology Conference Houston, TX...

  12. Effect of Fuel Wobbe Number on Pollutant Emissions from Advanced Technology Residential Water Heaters: Results of Controlled Experiments

    E-Print Network [OSTI]

    Rapp, VH

    2014-01-01T23:59:59.000Z

    46 Table 10. Storage water heaters evaluated experimentallyfor interchangeability experiments for storage water heaterfor experiments with storage water heater AW01. 53

  13. Development of a Low Cost Heat Pump Water Heater - First Prototype

    SciTech Connect (OSTI)

    Mei, V. C. [Oak Ridge National Laboratory (Retired); Tomlinson, J. J. [Oak Ridge National Laboratory (Retired)

    2007-09-01T23:59:59.000Z

    Until now the heat pump water heater (HPWH) has been a technical success but a market failure because of its high initial cost. Oak Ridge National Laboratory (ORNL) was tasked to examine commercially available HPWH product technology and manufacturing processes for cost saving opportunities. ORNL was also tasked to verify the technical feasibility of the cost saving opportunities where necessary and appropriate. The objective was to retain most of the HPWH s energy saving performance while reducing cost and simple payback period to approximately three years in a residential application. Several cost saving opportunities were found. Immersing the HPWH condenser directly into the tank allowed the water-circulating pump to be eliminated and a standard electric resistance storage water heater to be used. In addition, designs could be based on refrigerator compressors. Standard water heaters and refrigerator compressors are both reliable, mass produced, and low cost. To verify the feasibility of these cost saving measures, ORNL completed a conceptual design for an HPWH based on an immersed condenser coil that could be directly inserted into a standard water heater tank through a sleeve affixed to one of the standard penetrations at the top of the tank. The sleeve contour causes the bayonet-style condenser to helix while being pushed into the tank, enabling a condenser of sufficient heat transfer surface area to be inserted. Based on this design, ORNL fabricated the first laboratory prototype and completed preliminary laboratory tests in accordance with the DOE Simulated Use Test Procedure. Hardening during double-wall condenser fabrication was not overcome, so the prototype is single-walled with a liner. The prototype unit was found to have an energy factor of 2.02, verifying that the low-cost design retains most of the HPWH s energy saving performance. Industry involvement is being sought to resolve the fabrication issue and quantify progress on reducing cost and simple payback period to approximately three years in a residential application. This report provides information on the design, prototype construction, laboratory test data, and analyses of this HPWH.

  14. Field Testing of Pre-Production Prototype Residential Heat Pump Water Heaters

    Broader source: Energy.gov [DOE]

    Provides and overview of field testing of 18 pre-production prototype residential heat pump water heaters

  15. Diagnosis of Solar Water Heaters Using Solar Storage Tank Surface Temperature Data: Preprint

    SciTech Connect (OSTI)

    Burch, J.; Magnuson, L.; Barker, G.; Bullwinkel, M.

    2009-04-01T23:59:59.000Z

    Study of solar water heaters by using surface temperature data of solar storage tanks to diagnose proper operations.

  16. Whole-Home Gas Tankless Water Heaters, Purchasing Specifications for Energy-Efficient Products (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2010-06-01T23:59:59.000Z

    Performance and purchasing specifications for whole-home gas water heaters under the FEMP-designated product program.

  17. Revisions to the SRCC Rating Process for Solar Water Heaters: Preprint

    SciTech Connect (OSTI)

    Burch, J.; Huggins, J.; Long, S.; Thornton, J.

    2012-06-01T23:59:59.000Z

    In the United States, annual performance ratings for solar water heaters are computed with component-based simulation models driven by typical meteorological year weather and specified water draw. Changes in the process are being implemented to enhance credibility through increased transparency and accuracy. Changes to the process include using a graphical rather than text-based model-building tool, performing analytical tests on all components and systems, checking energy balances on every component, loop, and system at every time step, comparing the results to detect outliers and potential errors, and documenting the modeling process in detail. Examples of changes in ratings are shown, along with analytical and comparative testing results.

  18. Restoration of Refinery Heaters Using the Technique of Prefabricated Ceramic Fiber Lined Panels

    E-Print Network [OSTI]

    Sento, H. D.

    1981-01-01T23:59:59.000Z

    Refinery heater fuel requirements often represent 50% of a units operating cost. A one percent change in the efficiency of a heater firing 100 MBtu/hr amounts to more than $25,000 per year. Heater efficiency is influenced by casing hot spots, air...

  19. DESIGN AND DEVELOPMENT TESTING OF AN IMPROVED (1 HIGH-EFFICIENCY WATER HEATER

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    #12;DESIGN AND DEVELOPMENT TESTING OF AN IMPROVED (1 HIGH-EFFICIENCY WATER HEATER (2} (3) (21 icense in and to any copyright covering the drticle. This paper describes a high-efficiency water heater which uses a design approach quite different from the conventional center-flue water heater. While high

  20. A COMPARISON OF LABORATORY AND FIELD-TEST MEASUREMENTS OF HEAT PUMP WATER HEATERS

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    #12;A COMPARISON OF LABORATORY AND FIELD-TEST MEASUREMENTS OF HEAT PUMP WATER HEATERS William P a heat pump water heater (HPWH). After developing the HPWH, a field-test plan was implemented whereby 20 evaluate this effect. #12;INTRODUCTION Domestic water heaters account for approximately 2.5 EJ (2.4 x 1015

  1. Applications Tests of Commercial Heat Pump Water Heaters

    E-Print Network [OSTI]

    Oshinski, J. N..; Abrams, D. W.

    1987-01-01T23:59:59.000Z

    Field application tests have been conducted on three 4 to 6-ton commercial heat pump water heater systems in a restaurant, a coin-operated laundry, and an office building cafeteria in Atlanta. The units provide space cooling while rejecting heat...

  2. 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.

  3. Technical support document: Energy efficiency standards for consumer products: Room air conditioners, water heaters, direct heating equipment, mobile home furnaces, kitchen ranges and ovens, pool heaters, fluorescent lamp ballasts and television sets. Volume 1, Methodology

    SciTech Connect (OSTI)

    Not Available

    1993-11-01T23:59:59.000Z

    The Energy Policy and Conservation Act (P.L. 94-163), as amended, establishes energy conservation standards for 12 of the 13 types of consumer products specifically covered by the Act. The legislation requires the Department of Energy (DOE) to consider new or amended standards for these and other types of products at specified times. DOE is currently considering amending standards for seven types of products: water heaters, direct heating equipment, mobile home furnaces, pool heaters, room air conditioners, kitchen ranges and ovens (including microwave ovens), and fluorescent light ballasts and is considering establishing standards for television sets. This Technical Support Document presents the methodology, data, and results from the analysis of the energy and economic impacts of the proposed standards. This volume presents a general description of the analytic approach, including the structure of the major models.

  4. Development and Validation of a Gas-Fired Residential Heat Pump Water Heater - Final Report

    SciTech Connect (OSTI)

    Michael Garrabrant; Roger Stout; Paul Glanville; Janice Fitzgerald; Chris Keinath

    2013-01-21T23:59:59.000Z

    For gas-fired residential water heating, the U.S. and Canada is predominantly supplied by minimum efficiency storage water heaters with Energy Factors (EF) in the range of 0.59 to 0.62. Higher efficiency and higher cost ($700 - $2,000) options serve about 15% of the market, but still have EFs below 1.0, ranging from 0.65 to 0.95. To develop a new class of water heating products that exceeds the traditional limit of thermal efficiency, the project team designed and demonstrated a packaged water heater driven by a gas-fired ammonia-water absorption heat pump. This gas-fired heat pump water heater can achieve EFs of 1.3 or higher, at a consumer cost of $2,000 or less. Led by Stone Mountain Technologies Inc. (SMTI), with support from A.O. Smith, the Gas Technology Institute (GTI), and Georgia Tech, the cross-functional team completed research and development tasks including cycle modeling, breadboard evaluation of two cycles and two heat exchanger classes, heat pump/storage tank integration, compact solution pump development, combustion system specification, and evaluation of packaged prototype GHPWHs. The heat pump system extracts low grade heat from the ambient air and produces high grade heat suitable for heating water in a storage tank for domestic use. Product features that include conventional installation practices, standard footprint and reasonable economic payback, position the technology to gain significant market penetration, resulting in a large reduction of energy use and greenhouse gas emissions from domestic hot water production.

  5. Advanced Combustion Diagnostics and Control for Furnaces, Fired Heaters and Boilers

    SciTech Connect (OSTI)

    Tate, J. D.; Le, Linh D.; Knittel,Trevor; Cowie, Alan

    2010-03-20T23:59:59.000Z

    The objective of this project was to develop and apply enabling tools and methods towards advanced combustion diagnostics and control of fired-equipment in large-scale petrochemical manufacturing. There are a number of technology gaps and opportunities for combustion optimization, including technologies involving advanced in-situ measurements, modeling, and thermal imaging. These technologies intersect most of manufacturing and energy systems within the chemical industry. This project leveraged the success of a previous DOE funded project led by Dow, where we co-developed an in-situ tunable diode laser (TDL) analyzer platform (with Analytical Specialties Inc, now owned by Yokogawa Electric Corp.). The TDL platform has been tested and proven in a number of combustion processes within Dow and outside of Dow. The primary focus of this project was on combustion diagnostics and control applied towards furnaces, fired heaters and boilers. Special emphasis was placed on the development and application of in-situ measurements for O2, CO and methane since these combustion gases are key variables in optimizing and controlling combustion processes safely. Current best practice in the industry relies on measurements that suffer from serious performance gaps such as limited sampling volume (point measurements), poor precision and accuracy, and poor reliability. Phase I of the project addressed these gaps by adding improved measurement capabilities such as CO and methane (ppm analysis at combustion zone temperatures) as well as improved optics to maintain alignment over path lengths up to 30 meters. Proof-of-concept was demonstrated on a modern olefins furnace located at Dow Chemical's facility in Freeport TX where the improved measurements were compared side-by-side to accepted best practice techniques (zirconium oxide and catalytic bead or thick film sensors). After developing and installing the improved combustion measurements (O2, CO, and methane), we also demonstrated the ability to improve control of an olefins furnace (via CO-trim) that resulted in significant energy savings and lower emissions such as NOx and other greenhouse gases. The cost to retrofit measurements on an existing olefins furnace was found to be very attractive, with an estimated payback achieved in 4 months or less.

  6. Commercialization of air conditioning heat pump/water heater. Final technical report, Volume 3: Appendix F through I

    SciTech Connect (OSTI)

    NONE

    1996-01-30T23:59:59.000Z

    This is the final technical report on a commercialization project for an air conditioning heat pump water heater. The objective of the project was to produce a saleable system which would be economically competitive with natural gas and cost effective with regard to initial cost versus annual operating costs. The development and commercialization of the system is described. Compiled data included in numerous figures, tables and graphs.

  7. Commercialization of air conditioning heat pump/water heater. Final technical report, Volume 2: Appendix A through E

    SciTech Connect (OSTI)

    NONE

    1996-01-30T23:59:59.000Z

    This is the final technical report on a commercialization project for an air conditioning heat pump water heater. The objective of the project was to produce a saleable system which would be economically competitive with natural gas and cost effective with regard to initial cost versus annual operating costs. The development and commercialization of the system is described. Compiled data included in numerous figures, tables and graphs.

  8. Impact of Ducting on Heat Pump Water Heater Space Conditioning Energy Use and Comfort

    SciTech Connect (OSTI)

    Widder, Sarah H.; Petersen, Joseph M.; Parker, Graham B.; Baechler, Michael C.

    2014-07-21T23:59:59.000Z

    Increasing penetration of heat pump water heaters (HPWHs) in the residential sector will offer an important opportunity for energy savings, with a theoretical energy savings of up to 63% per water heater and up to 11% of residential energy use (EIA 2009). However, significant barriers must be overcome before this technology will reach widespread adoption in the Pacific Northwest region and nationwide. One significant barrier noted by the Northwest Energy Efficiency Alliance (NEEA) is the possible interaction with the homes’ space conditioning system for units installed in conditioned spaces. Such complex interactions may decrease the magnitude of whole-house savings available from HPWH installed in the conditioned space in cold climates and could lead to comfort concerns (Larson et al. 2011; Kresta 2012). Modeling studies indicate that the installation location of HPWHs can significantly impact their performance and the resultant whole-house energy savings (Larson et al. 2012; Maguire et al. 2013). However, field data are not currently available to validate these results. This field evaluation of two GE GeoSpring HPWHs in the PNNL Lab Homes is designed to measure the performance and impact on the Lab Home HVAC system of a GE GeoSpring HPWH configured with exhaust ducting compared to an unducted GeoSpring HPWH during heating and cooling season periods; and measure the performance and impact on the Lab Home HVAC system of the GeoSpring HPWH with both supply and exhaust air ducting as compared to an unducted GeoSpring HPWH during heating and cooling season periods. Important metrics evaluated in these experiments include water heater energy use, HVAC energy use, whole house energy use, interior temperatures (as a proxy for thermal comfort), and cost impacts. This technical report presents results from the PNNL Lab Homes experiment.

  9. Effect of Fuel Wobbe Number on Pollutant Emissions from Advanced Technology Residential Water Heaters: Results of Controlled Experiments

    E-Print Network [OSTI]

    Rapp, VH

    2014-01-01T23:59:59.000Z

    Water Heaters 7.0 Glossary of Abbreviations AGA American Gas Association ANSI American National Standards

  10. Dehumidifying water heater. Technical progress report

    SciTech Connect (OSTI)

    Not Available

    1992-08-18T23:59:59.000Z

    Drawings and specifications are included for the system to heat water for the swimming pool and dehumidify the building of the Glen Cove YMCA. An overview is presented of the Nautica product used in this system. (MHR)

  11. City of Statesville Electric Utility Department- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    The City of Statesville Electric Utility Department offers rebates to its residential customers for installing new, energy efficient water heaters and heat pumps. To qualify for the heat pump...

  12. Heat Recovery Considerations for Process Heaters and Boilers

    E-Print Network [OSTI]

    Kumar, A.

    ) Chemicals (223) 0.81xlO 15 81xl0 6 3) Pulp & Paper (8) 1.30xlO 15 2.2xI0 6 4) ~leta1s (32) O.07xlO 15 6.4x10 6 O.28xl0 15 308 291xl0 6 2.46xlO 15 Sec =Specific energy consumption * Calculated as %reduction in SEC - value 10TOR "OUSI.. SEi...Heat Recovery Considerations for Process Heaters and Boilers Ash Kumar, Pennzoil Company, Shreveport, Louisiana The largest single area for industrial energy conservation is in the improvement of combustion efficiencies for heaters and boilers...

  13. Model for Aggregated Water Heater Load Using Dynamic Bayesian Networks

    SciTech Connect (OSTI)

    Vlachopoulou, Maria; Chin, George; Fuller, Jason C.; Lu, Shuai; Kalsi, Karanjit

    2012-07-19T23:59:59.000Z

    The transition to the new generation power grid, or “smart grid”, requires novel ways of using and analyzing data collected from the grid infrastructure. Fundamental functionalities like demand response (DR), that the smart grid needs, rely heavily on the ability of the energy providers and distributors to forecast the load behavior of appliances under different DR strategies. This paper presents a new model of aggregated water heater load, based on dynamic Bayesian networks (DBNs). The model has been validated against simulated data from an open source distribution simulation software (GridLAB-D). The results presented in this paper demonstrate that the DBN model accurately tracks the load profile curves of aggregated water heaters under different testing scenarios.

  14. 1 INTRODUCTION Urban lifelines include electricity, communication,

    E-Print Network [OSTI]

    Spencer Jr., B.F.

    and functions, form recovery obstacles mutually, and lead to secondary disaster. The disaster of all lifelines and the relationship between the effect degree sequence and the post-quake recovery time sequence are studied by both, it will followed by functional Urban lifelines effects degree sequence and recovery time sequence Youpo Su, Yajie

  15. Impact of Pilot Light Modeling on the Predicted Annual Performance of Residential Gas Water Heaters: Preprint

    SciTech Connect (OSTI)

    Maguire, J.; Burch, J.

    2013-08-01T23:59:59.000Z

    Modeling residential water heaters with dynamic simulation models can provide accurate estimates of their annual energy consumption, if the units? characteristics and use conditions are known. Most gas storage water heaters (GSWHs) include a standing pilot light. It is generally assumed that the pilot light energy will help make up standby losses and have no impact on the predicted annual energy consumption. However, that is not always the case. The gas input rate and conversion efficiency of a pilot light for a GSWH were determined from laboratory data. The data were used in simulations of a typical GSWH with and without a pilot light, for two cases: 1) the GSWH is used alone; and 2) the GSWH is the second tank in a solar water heating (SWH) system. The sensitivity of wasted pilot light energy to annual hot water use, climate, and installation location was examined. The GSWH used alone in unconditioned space in a hot climate had a slight increase in energy consumption. The GSWH with a pilot light used as a backup to an SWH used up to 80% more auxiliary energy than one without in hot, sunny locations, from increased tank losses.

  16. Assessing Consumer Values and the Supply-Chain Market for the Integrated Water Heater/Dehumidifier

    SciTech Connect (OSTI)

    Ashdown, BG

    2005-01-11T23:59:59.000Z

    This paper presents a case study of the potential market for the dual-service residential integrated water heater/dehumidifier (WHD). Its principal purpose is to evaluate the extent to which this integrated appliance might penetrate the residential market sector, given current market trends, producer and consumer attributes, and technical parameters. The report's secondary purpose is to gather background information leading to a generic framework for conducting market analyses of technologies. This framework can be used to assess market readiness as well as factor preferred product attributes into the design to drive consumer demand for this product. This study also supports analysis for prototype design. A full market analysis for potential commercialization should be conducted after prototype development. The integrated WHD is essentially a heat-pump water heater (HPWH) with components and controls that allow dedicated dehumidification. Adequate residential humidity control is a growing issue for newly constructed residential homes, which are insulated so well that mechanical ventilation may be necessary to meet fresh air requirements. Leveraging its successful experience with the energy-efficient design improvement for the residential HPWH, the Oak Ridge National Laboratory's (ORNL's) Engineering Science and Technology Division's (ESTD's) Building Equipment Group designed a water-heating appliance that combines HPWH efficiency with dedicated dehumidification. This integrated appliance could be a low-cost solution for dehumidification and efficient electric water heating. ORNL is partnering with Western Carolina University, Asheville-Buncombe Technical Community College, American Carolina Stamping Company, and Clemson University to develop this appliance and assess its market potential. For practical purposes, consumers are indifferent to how water is heated but are very interested in product attributes such as initial first cost, operating cost, performance, serviceability, product size, and installation costs. The principal drivers for penetrating markets are demonstrating reliability, leveraging the dehumidification attributes of the integrated WHD, and creating programs that embrace first-cost and life-cycle cost principles.

  17. Development of minimum efficiency standards for large capacity air conditioners, and commercial water heaters, refrigerators, and freezers. Final report

    SciTech Connect (OSTI)

    Merrill, P.S.; Rettberg, R.J.; Erickson, R.C.; Toor, J.S.

    1980-05-01T23:59:59.000Z

    The California Energy Resources Conservation and Development Commission has promulgated appliance energy efficiency standards and energy conservation standards for new construction with the objective of reducing energy consumption in the State of California. The following appliance categories are specifically addressed: large capacity air conditioners; commercial water heaters; and commercial refrigerators and freezers. The tasks that have been performed include: an energy use pattern study for the subject equipment; an examination of the size distribution of commercial air conditioning equipment; an examination of the different types of commercial air conditioning systems; an evaluation of the effectiveness of economizers in reducing commercial air conditioning system energy consumption in California; an examination of the effects of oversizing commercial air conditioners; a detailed study of supermarket refrigeration and air conditioning equipment; an evaluation of the economic feasibility of utilizing air conditioner waste heat to heat water; an assessment of the applicability of existing test procedures for small water heaters to large water heaters; and a brief investigation of the marketing and distribution systems for air conditioning and refrigeration equipment. Results of the efforts are described.

  18. MEMS Hotplates with TiN as a Heater Material J.F. Creemer1

    E-Print Network [OSTI]

    Technische Universiteit Delft

    MEMS Hotplates with TiN as a Heater Material J.F. Creemer1 , W. van der Vlist2 , C.R. de Boer2 , H investigated as a heater material for hotplates and microreactors. TiN is CMOS compatible, and has a higher melting point (2950 ºC) than conventional heaters of Pt and poly-Si. For the first time, TiN is tested

  19. Assessing the Energy Savings of Tankless Water Heater Retrofits in Public Housing

    SciTech Connect (OSTI)

    Ries, R.; Walters, R.; Dwiantoro, D.

    2013-01-01T23:59:59.000Z

    This report describes the methodology, analysis, and findings from a case study of a 110 unit retrofit of gas tankless water heaters in a hot/humid climate in Alachua County, Florida. The housing units had their gas-fired tank type water heaters replaced with gas-fired tankless water heaters as part of a federal program that targeted reduced energy use in public housing.

  20. 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

    Water Heaters Jim Lutz, Lawrence Berkeley National Laboratory January 25, 2011 The American Society of Heating, Refrigerating, and Air-conditioning Engineers (ASHRAE) Standards

  1. E-Print Network 3.0 - active heater control Sample Search Results

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

    suborder Scombroidei have independently Summary: event when the activity of the SERCA pumps was reduced. RNase protection assays revealed that heater... be under neural control....

  2. Economics of residential gas furnaces and water heaters in United States new construction market

    E-Print Network [OSTI]

    Lekov, Alex B.

    2010-01-01T23:59:59.000Z

    Experiences of residential consumers and utilities. OakStar (2008). Energy Star Residential Water Heaters: Finalefficiency improvements for residential gas furnaces in the

  3. Development of solar air heaters & thermal energy storage system for drying applications in food processing industries.

    E-Print Network [OSTI]

    Sreekumar, A

    2007-01-01T23:59:59.000Z

    ??In the present work, the author has designed and developed all types of solar air heaters called porous and nonporous collectors. The developed solar air… (more)

  4. E-Print Network 3.0 - air heater experiment Sample Search Results

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

    air heat... exchanger Two dc power supplies; power supply for running the cooling fan Thermocouples, heaters, load Source: Braun, Paul - Department of Materials...

  5. Sustainable Energy Resources for Consumers (SERC)- On-Demand Tankless Water Heaters

    Broader source: Energy.gov [DOE]

    This presentation, aimed at Sustainable Energy Resources for Consumers (SERC) grantees, provides information on Monitoring Checklists for the installation of On-Demand Tankless Water Heaters.

  6. HEATER TEST PLANNING FOR THE NEAR SURFACE TEST FACILITY AT THE HANFORD RESERVATION

    E-Print Network [OSTI]

    DuBois, A.

    2010-01-01T23:59:59.000Z

    Heater Experiment at Hanford. Berkeley, Lawre ;e BerkeleyTest Facility, Hole DC-11, Hanford Reservation. Prepared forof Gable Mountain Basalt Cores, Hanford Nuclear Reservation.

  7. Mountain Association for Community Economic Development- Solar Water Heater Loan Program

    Broader source: Energy.gov [DOE]

    The Kentucky Solar Partnership (KSP) and the Mountain Association for Community Economic Development (MACED) partner to offer low interest loans for the installation of solar water heaters. Loans...

  8. West Village Community: Quality Management Processes and Preliminary Heat Pump Water Heater Performance

    SciTech Connect (OSTI)

    Dakin, B.; Backman, C.; Hoeschele, M.; German, A.

    2012-11-01T23:59:59.000Z

    West Village, a multi-use project underway at the University of California Davis, represents a ground-breaking sustainable community incorporating energy efficiency measures and on-site renewable generation to achieve community-level Zero Net Energy (ZNE) goals. The project when complete will provide housing for students, faculty, and staff with a vision to minimize the community's impact on energy use by reducing building energy use, providing on-site generation, and encouraging alternative forms of transportation. This focus of this research is on the 192 student apartments that were completed in 2011 under Phase I of the West Village multi-year project. The numerous aggressive energy efficiency measures implemented result in estimated source energy savings of 37% over the B10 Benchmark. There are two primary objectives of this research. The first is to evaluate performance and efficiency of the central heat pump water heaters as a strategy to provide efficient electric water heating for net-zero all-electric buildings and where natural gas is not available on site. In addition, effectiveness of the quality assurance and quality control processes implemented to ensure proper system commissioning and to meet program participation requirements is evaluated. Recommendations for improvements that could improve successful implementation for large-scale, high performance communities are identified.

  9. Integral finned heater and cooler for stirling engines

    DOE Patents [OSTI]

    Corey, John A. (North Troy, NY)

    1984-01-01T23:59:59.000Z

    A piston and cylinder for a Stirling engine and the like having top and bottom meshing or nesting finned conical surfaces to provide large surface areas in close proximity to the working gas for good thermal (addition and subtraction of heat) exchange to the working gas and elimination of the usual heater and cooler dead volume. The piston fins at the hot end of the cylinder are perforated to permit the gas to pass into the piston interior and through a regenerator contained therein.

  10. High Efficiency R-744 Commercial Heat Pump Water Heaters

    SciTech Connect (OSTI)

    Elbel, Dr. Stefan W.; Petersen, Michael

    2013-04-25T23:59:59.000Z

    The project investigated the development and improvement process of a R744 (CO2) commercial heat pump water heater (HPWH) package of approximately 35 kW. The improvement process covered all main components of the system. More specific the heat exchangers (Internal heat exchanger, Evaporator, Gas cooler) as well as the expansion device and the compressor were investigated. In addition, a comparison to a commercially available baseline R134a unit of the same capacity and footprint was made in order to compare performance as well as package size reduction potential.

  11. Tankless or Demand-Type Water Heaters | 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy UsageAUDITVehiclesTankless or Demand-Type Water Heaters Tankless or Demand-Type Water

  12. Buildings Energy Data Book: 5.4 Water Heaters

    Buildings Energy Data Book [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels Data CenterEnergyAuthorization for(EV) Road UserNatural122 Water Heater Stock

  13. Buildings Energy Data Book: 5.4 Water Heaters

    Buildings Energy Data Book [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels Data CenterEnergyAuthorization for(EV) Road UserNatural122 Water Heater Stock3

  14. Buildings Energy Data Book: 5.4 Water Heaters

    Buildings Energy Data Book [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels Data CenterEnergyAuthorization for(EV) Road UserNatural122 Water Heater Stock34

  15. Buildings Energy Data Book: 5.4 Water Heaters

    Buildings Energy Data Book [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels Data CenterEnergyAuthorization for(EV) Road UserNatural122 Water Heater Stock345

  16. Hawaiian Electric Company Demand Response Roadmap Project

    E-Print Network [OSTI]

    Levy, Roger

    2014-01-01T23:59:59.000Z

    Examination Table 1. HECO Water Heater Direct Control –Reliability Table 2. HECO Water Heater Direct Control –criteria for current water heater and air conditioning

  17. Hawaiian Electric Company Demand Response Roadmap Project

    E-Print Network [OSTI]

    Levy, Roger

    2014-01-01T23:59:59.000Z

    of control. Water heater demand response options are notcurrent water heater and air conditioning demand responsecustomer response Demand response water heater participation

  18. Hawaiian Electric Company Demand Response Roadmap Project

    E-Print Network [OSTI]

    Levy, Roger

    2014-01-01T23:59:59.000Z

    development effort. While storage water heater options beganany load reduction. 36 Water heater storage capability, ifstrategies based on water heater storage capacity 37 – the

  19. Eleana near-surface heater experiment final report

    SciTech Connect (OSTI)

    Lappin, A R; Thomas, R K; McVey, D F

    1981-04-01T23:59:59.000Z

    This report summarizes the results of a near-surface heater experiment operated at a depth of 23 m in argillite within the Eleana Formation on the Nevada Test Site (NTS). The test geometrically simulated emplacement of a single canister of High-Level Waste (HLW) and was operated at a power level of 2.5 kW for 21 days, followed by 3.8 kW to 250 days, when the power was turned off. Below 85 to 100{sup 0}C, there was good agreement between modeled and measured thermal results in the rock and in the emplacement hole, except for transient transport of water in the heater hole. Above 100{sup 0}C, modeled and measured thermal results increasingly diverged, indicating that the in-situ rock-mass thermal conductivity decreased as a result of dehydration more than expected on the basis of matrix properties. Correlation of thermomechanical modeling and field results suggests that this decrease was caused by strong coupling of thermal and mechanical behavior of the argillite at elevated temperatures. No hole-wall decrepitation was observed in the experiment; this fact and the codrrelation of modeled and measured results at lower temperatures indicate that there is no a priori reason to eliminate argillaceous rocks from further consideration as a host rock for nuclear wastes.

  20. Tankless water heaters fill the bill at fast-food restaurants

    SciTech Connect (OSTI)

    Not Available

    1988-02-01T23:59:59.000Z

    This article explains why Kentucky Fried Chicken has installed a PH-24 water heater. The tankless water heater meets the restaurant's criteria for space spacing, flow rates, certification and availability, and money saving efficiency. This article describes the system and its advantages.

  1. TiN for MEMS hotplate heaters J.F. Creemer1

    E-Print Network [OSTI]

    Technische Universiteit Delft

    TiN for MEMS hotplate heaters J.F. Creemer1 , P.M. Sarro2 , M. Laros2 , H. Schellevis2 , L, DIMES, ECTM, Mekelweg 4, 2628 CD Delft, Netherlands. Summary: Low-stress TiN has been investigated is required to protect the TiN against oxidation. Keywords: TiN thin films, micro heater, hot plate 1

  2. Selecting a New Water Heater You have a lot to consider when selecting a

    E-Print Network [OSTI]

    the water heater's annual operation costs but also its size and energy efficiency. Natural gas, oil or tank water heater operates by releasing hot water from the top of the tank when the hot water tap is turned on. The hot water is released into the hot water line. As the hot water leaves the tank, cold

  3. PRELIMINARY THERMAL AND THERMOMECH-ANICAL MODELING FOR THE NEAR SURFACE TEST FACILITY HEATER EXPERIMANTS AT HANFORD: Appendix D

    E-Print Network [OSTI]

    Chan, T.

    2011-01-01T23:59:59.000Z

    Heater Experiments at Hanford V O L U M E II (Appendix D) TENG-48 and for Rockwell Hanford Operations — a Department ofFACILITY HEATER EXPERIMENTS AT HANFORD Volume 2 (Appendix D)

  4. Energy Conservation Program for Consumer Products: Energy Conservation Standards for Direct Heating Equipment and Pool Heaters, Request for Information

    Broader source: Energy.gov [DOE]

    Energy Conservation Program for Consumer Products: Energy Conservation Standards for Direct Heating Equipment and Pool Heaters, Request for Information

  5. Heat Pump Water Heater Technology: Experiences of Residential Consumers and Utilities

    SciTech Connect (OSTI)

    Ashdown, BG

    2004-08-04T23:59:59.000Z

    This paper presents a case study of the residential heat pump water heater (HPWH) market. Its principal purpose is to evaluate the extent to which the HPWH will penetrate the residential market sector, given current market trends, producer and consumer attributes, and technical parameters. The report's secondary purpose is to gather background information leading to a generic framework for conducting market analyses of technologies. This framework can be used to compare readiness and to factor attributes of market demand back into product design. This study is a rapid prototype analysis rather than a detailed case analysis. For this reason, primary data collection was limited and reliance on secondary sources was extensive. Despite having met its technical goals and having been on the market for twenty years, the HPWH has had virtually no impact on contributing to the nation's water heating. In some cases, HPWH reliability and quality control are well below market expectations, and early units developed a reputation for unreliability, especially when measured against conventional water heaters. In addition to reliability problems, first costs of HPWH units can be three to five times higher than conventional units. Without a solid, well-managed business plan, most consumers will not be drawn to this product. This is unfortunate. Despite its higher first costs, efficiency of an HPWH is double that of a conventional water heater. The HPWH also offers an attractive payback period of two to five years, depending on hot water usage. On a strict life-cycle basis it supplies hot water very cost effectively. Water heating accounts for 17% of the nation's residential consumption of electricity (see chart at left)--water heating is second only to space heating in total residential energy use. Simple arithmetic suggests that this figure could be reduced to the extent HPWH technology displaces conventional water heating. In addition, the HPWH offers other benefits. Because it produces hot water by extracting heat from the air it tends to dehumidify and cool the room in which it is placed. Moreover, it tends to spread the water heating load across utility non-peak periods. Thus, electric utilities with peak load issues could justify internal programs to promote this technology to residential and commercial customers. For practical purposes, consumers are indifferent to the manner in which water is heated but are very interested in product attributes such as initial first cost, operating cost, performance, serviceability, product size, and installation costs. Thus, the principal drivers for penetrating markets are demonstrating reliability, leveraging the dehumidification attributes of the HPWH, and creating programs that embrace life-cycle cost principles. To supplement this, a product warranty with scrupulous quality control should be implemented; first-price reduction through engineering, perhaps by reducing level of energy efficiency, should be pursued; and niche markets should be courted. The first step toward market penetration is to address the HPWH's performance reliability. Next, the manufacturers could engage select utilities to aggressively market the HPWH. A good approach would be to target distinct segments of the market with the potential for the highest benefits from the technology. Communications media that address performance issues should be developed. When marketing to new home builders, the HPWH could be introduced as part of an energy-efficient package offered as a standard feature by builders of new homes within a community. Conducting focus groups across the United States to gather input on HPWH consumer values will feed useful data back to the manufacturers. ''Renaming'' and ''repackaging'' the HPWH to improve consumer perception, appliance aesthetics, and name recognition should be considered. Once an increased sales volume is achieved, the manufacturers should reinvest in R&D to lower the price of the units. The manufacturers should work with ''do-it-yourself'' (DIY) stores to facilitate introduction of th

  6. First Results of the LCLS Laser-Heater System

    SciTech Connect (OSTI)

    Emma, P; Boyce, R.F.; Brachmann, A.; Carr, R.; Decker, F.-J.; Ding, Y.; Dowell, D.; Edstrom, S.; Frisch, J.; Gilevich, S.; Hays, G.; Hering, Ph.; Huang, Z.; Iverson, R.; Levashov, Y.; Loos, H.; Miahnahri, A.; Nuhn, H.-D.; Poling, B.; Ratner, D.; Spampinati, S.; /SLAC

    2011-12-16T23:59:59.000Z

    The Linac Coherent Light Source (LCLS) is an x-ray Free-Electron Laser (FEL) project that has just achieved its first lasing at 1.5 {angstrom} radiation wavelength. The very bright electron beam required to drive this FEL is susceptible to a microbunching instability in the magnetic bunch compressors that may increase the slice energy spread beyond the FEL tolerance. To control the slice energy spread and to suppress the microbunching instability, a laser heater (LH) system is installed in the LCLS injector area at 135 MeV, right before the RF deflector that is used for the time-resolved electron diagnostics. This unique component is used to add a small level of intrinsic energy spread to the electron beam in order to Landau damp the microbunching instability before it potentially breaks up the high brightness electron beam. The system was fully installed and tested in the fall of 2008, and effects of heating on the electron beam and the x-ray FEL were studied during the 2009 commissioning period. The laser heater system is composed of a 4-dipole chicane; a 9-period, planar, permanent-magnet, adjustable-gap undulator at the center of the chicane; one OTR screen on each side of the undulator for electron/laser spatial alignment; and an IR laser (up to 15-MW power) which co-propagates with the electron beam inside the undulator generating a 758-nm energy modulation along the bunch. The final two dipoles of the 4-dipole chicane time-smear this modulation leaving only a thermal-like intrinsic energy spread within the bunch. Table 1 lists the main parameters for this system. The very bright electron beam required for an x-ray free-electron laser (FEL), such as the LCLS, is susceptible to a microbunching instability in the magnetic bunch compressors, prior to the FEL undulator. The uncorrelated electron energy spread in the LCLS can be increased by an order of magnitude to provide strong Landau damping against the instability without degrading the FEL performance. To this end, a 'laser-heater' system has been installed in the LCLS injector, which modulates the energy of a 135-MeV electron bunch with an IR laser beam in a short undulator, enclosed within a four-dipole chicane. The last half of the chicane time-smears the energy modulation leaving an effective thermal energy spread increase. We present the first commissioning results of this system, its operational issues, its impact on the microbunching instability, and finally its effect on the FEL performance.

  7. Electric-Drive Vehicle Basics (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2011-04-01T23:59:59.000Z

    Describes the basics of electric-drive vehicles, including hybrid electric vehicles, plug-in hybrid electric vehicles, all-electric vehicles, and the various charging options.

  8. Development of Environmentally Benign Heat Pump Water Heaters for the US Market

    SciTech Connect (OSTI)

    Abdelaziz, Omar [ORNL] [ORNL; Wang, Kai [ORNL] [ORNL; Vineyard, Edward Allan [ORNL] [ORNL; Roetker, Jack [General Electric - Appliance Park] [General Electric - Appliance Park

    2012-01-01T23:59:59.000Z

    Improving energy efficiency in water heating applications is important to the nation's energy strategies. Water heating in residential and commercial buildings accounts for about 10% of U.S. buildings energy consumption. Heat pump water heating (HPWH) technology is a significant breakthrough in energy efficiency, as an alternative to electric resistance water heating. Heat pump technology has shown acceptable payback period with proper incentives and successful market penetration is emerging. However, current HPWH require the use of refrigerants with high Global Warming Potential (GWP). Furthermore, current system designs depend greatly on the backup resistance heaters when the ambient temperature is below freezing or when hot water demand increases. Finally, the performance of current HPWH technology degrades greatly as the water set point temperature exceeds 330 K. This paper presents the potential for carbon dioxide, CO2, as a natural, environmentally benign alternative refrigerant for HPWH technology. In this paper, we first describe the system design, implications and opportunities of operating a transcritical cycle. Next, a prototype CO2 HPWH design featuring flexible component evaluation capability is described. The experimental setup and results are then illustrated followed by a brief discussion on the measured system performance. The paper ends with conclusions and recommendations for the development of CO2 heat pump water heating technology suitable for the U.S. market.

  9. 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...

  10. 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...

  11. Light-Weight Radioisotope Heater Unit Safety Analysis Report (LWRHU-SAR). Volume I. A. Introduction and executive summary. B. Reference Design Document (RDD)

    SciTech Connect (OSTI)

    Johnson, E.W.

    1985-10-01T23:59:59.000Z

    The orbiter and probe portions of the NASA Galileo spacecraft contain components which require auxiliary heat during the mission. To meet these needs, the Department of Energy's (DOE's) Office of Special Nuclear Projects (OSNP) has sponsored the design, fabrication, and testing of a one-watt encapsulated plutonium dioxide-fueled thermal heater named the Light-Weight Radioisotope Heater Unit (LWRHU). This report addresses the radiological risks which might be encountered by people both at the launch area and worldwide should postulate mission failures or malfunctions occur, which would result in the release of the LWRHUs to the environment. Included are data from the design, mission descriptions, postulated accidents with their consequences, test data, and the derived source terms and personnel exposures for the various events.

  12. ECOVILLAGE FACTS The complex includes 50 apartments (18 original and 32 new)

    E-Print Network [OSTI]

    Baltisberger, Jay H.

    radiant floor heating o Structurally insulated panels (SIPs) · In additional to individual garden plots of the Ecovillage apartments include: o solar tubes and compact fluorescent lighting o low-flow toilets, community gatherings o Kitchen o Playroom o Dryers for Ecovillage residents o Solar water heater o Solar

  13. Electrical connector

    DOE Patents [OSTI]

    Dilliner, Jennifer L.; Baker, Thomas M.; Akasam, Sivaprasad; Hoff, Brian D.

    2006-11-21T23:59:59.000Z

    An electrical connector includes a female component having one or more receptacles, a first test receptacle, and a second test receptacle. The electrical connector also includes a male component having one or more terminals configured to engage the one or more receptacles, a first test pin configured to engage the first test receptacle, and a second test pin configured to engage the second test receptacle. The first test receptacle is electrically connected to the second test receptacle, and at least one of the first test pin and the second test pin is shorter in length than the one or more terminals.

  14. Economics of residential gas furnaces and water heaters in United States new construction market

    SciTech Connect (OSTI)

    Lekov, Alex B.; Franco, Victor H.; Wong-Parodi, Gabrielle; McMahon, James E.; Chan, Peter

    2009-05-06T23:59:59.000Z

    New single-family home construction represents a significant and important market for the introduction of energy-efficient gas-fired space heating and water-heating equipment. In the new construction market, the choice of furnace and water-heater type is primarily driven by first cost considerations and the availability of power vent and condensing water heaters. Few analysis have been performed to assess the economic impacts of the different combinations of space and water-heating equipment. Thus, equipment is often installed without taking into consideration the potential economic and energy savings of installing space and water-heating equipment combinations. In this study, we use a life-cycle cost analysis that accounts for uncertainty and variability of the analysis inputs to assess the economic benefits of gas furnace and water-heater design combinations. This study accounts not only for the equipment cost but also for the cost of installing, maintaining, repairing, and operating the equipment over its lifetime. Overall, this study, which is focused on US single-family new construction households that install gas furnaces and storage water heaters, finds that installing a condensing or power-vent water heater together with condensing furnace is the most cost-effective option for the majority of these houses. Furthermore, the findings suggest that the new construction residential market could be a target market for the large-scale introduction of a combination of condensing or power-vent water heaters with condensing furnaces.

  15. Orlando Utilities Commission- Residential Solar Water Heater Rebate Program (Florida)

    Broader source: Energy.gov [DOE]

    The Orlando Utilities Commission (OUC) offers residential electric customers a point-of-sale rebate of $1,000 for new solar water heating systems.

  16. Heat pump water heater and method of making the same

    DOE Patents [OSTI]

    Mei, Viung C. (Oak Ridge, TN); Tomlinson, John J. (Knoxville, TN); Chen, Fang C. (Knoxville, TN)

    2001-01-01T23:59:59.000Z

    An improved heat pump water heater wherein the condenser assembly of the heat pump is inserted into the water tank through an existing opening in the top of the tank, the assembly comprising a tube-in-a-tube construction with an elongated cylindrical outer body heat exchanger having a closed bottom with the superheated refrigerant that exits the compressor of the heat pump entering the top of the outer body. As the refrigerant condenses along the interior surface of the outer body, the heat from the refrigerant is transferred to the water through the outer body. The refrigerant then enters the bottom of an inner body coaxially disposed within the outer body and exits the top of the inner body into the refrigerant conduit leading into the expansion device of the heat pump. The outer body, in a second embodiment of the invention, acts not only as a heat exchanger but also as the sacrificial anode in the water tank by being constructed of a metal which is more likely to corrode than the metal of the tank.

  17. Electricity savings potentials in the residential sector of Bahrain

    SciTech Connect (OSTI)

    Akbari, H. [Lawrence Berkeley National Lab., CA (United States); Morsy, M.G.; Al-Baharna, N.S. [Univ. of Bahrain, Manama (Bahrain)

    1996-08-01T23:59:59.000Z

    Electricity is the major fuel (over 99%) used in the residential, commercial, and industrial sectors in Bahrain. In 1992, the total annual electricity consumption in Bahrain was 3.45 terawatt-hours (TWh), of which 1.95 TWh (56%) was used in the residential sector, 0.89 TWh (26%) in the commercial sector, and 0.59 TWh (17%) in the industrial sector. Agricultural energy consumption was 0.02 TWh (less than 1%) of the total energy use. In Bahrain, most residences are air conditioned with window units. The air-conditioning electricity use is at least 50% of total annual residential use. The contribution of residential AC to the peak power consumption is even more significant, approaching 80% of residential peak power demand. Air-conditioning electricity use in the commercial sector is also significant, about 45% of the annual use and over 60% of peak power demand. This paper presents a cost/benefit analysis of energy-efficient technologies in the residential sector. Technologies studied include: energy-efficient air conditioners, insulating houses, improved infiltration, increasing thermostat settings, efficient refrigerators and freezers, efficient water heaters, efficient clothes washers, and compact fluorescent lights. We conservatively estimate a 32% savings in residential electricity use at an average cost of about 4 fils per kWh. (The subsidized cost of residential electricity is about 12 fils per kWh. 1000 fils = 1 Bahrain Dinar = US$ 2.67). We also discuss major policy options needed for implementation of energy-efficiency technologies.

  18. ELECTRICAL HEATERS FOR THERMO-MECHANICAL TESTS AT THE STRIPA MINE

    E-Print Network [OSTI]

    Burleigh, R.H.

    2010-01-01T23:59:59.000Z

    of an air-cooled steam condenser which is in turn connectedthe steam temperature at the entrance to the condenser is 2

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

    E-Print Network [OSTI]

    Johnson, Alissa

    2013-01-01T23:59:59.000Z

    actively implementing demand side management, after a seriesblackouts in 2008. Demand side management programs are now

  20. Electric Blanket Delivers K.O. to Space Heater During #EnergyFaceoff Round

    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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy UsageAUDITVehiclesTanklessDOJ TitleDr. Steven ChuEffect of Increased

  1. Electric Blanket vs. Space Heater: #EnergyFaceoff Round 3 Heats Up |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in Review: TopEnergyIDIQ Contract ESPC IDIQEnergyGovernment Officials. NovemberThree

  2. Energy Cost Calculator for Electric and Gas Water Heaters | Department of

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

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists'Montana.Program -Department of Energy benchmarking.Department ofcapacity

  3. Accelerated Life Structural Benchmark Testing for a Stirling Convertor Heater Head

    SciTech Connect (OSTI)

    Krause, David L. [National Aeronautics and Space Administration, Glenn Research Center, Cleveland, OH 44135 (United States); Kantzos, Pete T. [Ohio Aerospace Institute, NASA Glenn Research Center, Cleveland, OH 44135 (United States)

    2006-01-20T23:59:59.000Z

    For proposed long-duration NASA Space Science missions, the Department of Energy, Lockheed Martin, Infinia Corporation, and NASA Glenn Research Center are developing a high-efficiency, 110-watt Stirling Radioisotope Generator (SRG110). A structurally significant limit state for the SRG110 heater head component is creep deformation induced at high material temperature and low stress level. Conventional investigations of creep behavior adequately rely on experimental results from uniaxial creep specimens, and a wealth of creep data is available for the Inconel 718 material of construction. However, the specified atypical thin heater head material is fine-grained with a heat treatment that limits precipitate growth, and little creep property data for this microstructure is available in the literature. In addition, the geometry and loading conditions apply a multiaxial stress state on the component, far from the conditions of uniaxial testing. For these reasons, an extensive experimental investigation is ongoing to aid in accurately assessing the durability of the SRG110 heater head. This investigation supplements uniaxial creep testing with pneumatic testing of heater head-like pressure vessels at design temperature with stress levels ranging from approximately the design stress to several times that. This paper presents experimental results, post-test microstructural analyses, and conclusions for four higher-stress, accelerated life tests. Analysts are using these results to calibrate deterministic and probabilistic analytical creep models of the SRG110 heater head.

  4. Method and apparatus for enhanced heat recovery from steam generators and water heaters

    DOE Patents [OSTI]

    Knight, Richard A.; Rabovitser, Iosif K.; Wang, Dexin

    2006-06-27T23:59:59.000Z

    A heating system having a steam generator or water heater, at least one economizer, at least one condenser and at least one oxidant heater arranged in a manner so as to reduce the temperature and humidity of the exhaust gas (flue gas) stream and recover a major portion of the associated sensible and latent heat. The recovered heat is returned to the steam generator or water heater so as to increase the quantity of steam generated or water heated per quantity of fuel consumed. In addition, a portion of the water vapor produced by combustion of fuel is reclaimed for use as feed water, thereby reducing the make-up water requirement for the system.

  5. Conservation Division regiulations for appliance-efficiency standards relating to refrigerators and freezers, room air conditioners, central air conditioners, gas space heaters, water heaters, plumbing fittings, gas clothes dryers, and gas cooking appliances

    SciTech Connect (OSTI)

    Not Available

    1981-12-16T23:59:59.000Z

    The text of the appliance efficiency standards for certain types of new appliances sold in California is presented. Specifications and test methods to identify complying refrigerators, freezers, air conditioners, gas space heaters, water heaters, plumbing fittings, gas clothes dryers, and gas cooking appliances are covered.

  6. Hybrid and Plug-In Electric Vehicles (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2011-10-01T23:59:59.000Z

    Describes the basics of electric-drive vehicles, including hybrid electric vehicles, plug-in hybrid electric vehicles, all-electric vehicles, and the various charging options.

  7. Hybrid and Plug-In Electric Vehicles (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2011-05-01T23:59:59.000Z

    Describes the basics of electric-drive vehicles, including hybrid electric vehicles, plug-in hybrid electric vehicles, all-electric vehicles, and the various charging options.

  8. NREL evaluates energy savings potential of heat pump water heaters in homes throughout all U.S. climate zones.

    E-Print Network [OSTI]

    NREL evaluates energy savings potential of heat pump water heaters in homes throughout all U.S. climate zones. Heat pump water heaters (HPWHs) have the potential to significantly reduce energy use is a function of surrounding air temperature, humidity, hot water usage, and the logic controlling the heat pump

  9. DETERMINATION OF IN-SITU THERMAL PROPERTIES OF STRIPA GRANITE FROM TEMPERATURE MEASUREMENTS IN THE FULL-SCALE HEATER EXPERIMENTS: METHOD AND PRELIMINARY RESULTS

    E-Print Network [OSTI]

    Jeffry, J.A.

    2010-01-01T23:59:59.000Z

    observed temperatures for the Lulea University pilot heaterPower room '--_I, I\\'~ \\,1 Lulea drift I I I I I I I I Ithe temperature data from the LUlea University pilot heater

  10. High efficiency solar air heaters with novel built-in heat storage for use in a humidification-dehumidification desalination cycle

    E-Print Network [OSTI]

    Summers, Edward K

    2010-01-01T23:59:59.000Z

    Compared to solar water heaters, solar air heaters have received relatively little investigation and have resulted in few commercial products. However, in the context of a Humidification-Dehumidification (HD) Desalination ...

  11. Business Case for Energy Efficiency in Support of Climate Change Mitigation, Economic and Societal Benefits in China

    E-Print Network [OSTI]

    McNeil, Michael A.

    2012-01-01T23:59:59.000Z

    Commercial and Industrial End Uses Incandescent Lamps Refrigerators Residential AC (Including Heat Pumps) Washing Machines Fluorescent Ballasts Electric Water Heaters

  12. ISSUANCE 2014-12-23: Energy Conservation Program for Consumer Products: Test Procedures for Direct Heating Equipment and Pool Heaters, Final Rule

    Broader source: Energy.gov [DOE]

    Energy Conservation Program for Consumer Products: Test Procedures for Direct Heating Equipment and Pool Heaters, Final Rule

  13. Comparative evaluation of the impacts of domestic gas and electric heat pump heating on air pollution in California. Final report

    SciTech Connect (OSTI)

    Ganji, A. [San Francisco State Univ., CA (United States). Div. of Engineering

    1992-07-01T23:59:59.000Z

    Residential space and water heating accounts for approximately 12% of California`s and 15% of the United States, energy consumption. most Of the residential heating is by direct use of natural gas. combustion of natural gas is a contributor to the overall air pollution,, especially CO and NO{sub x} in the urban areas. Another efficient method for domestic water and space heating is use of electric heat pumps, the most popular category of which uses air as its heat source. Electric heat pumps do not emit air pollutants at the point of use, but use electric power, which is a major contributor to air pollution at its point of generation from fossil fuels. It is the specific objective of this report to evaluate and compare the energy efficiency and source air pollutants of natural gas heaters and electric heat pumps used for domestic heating. Effect of replacing natural gas heaters with electric heat pumps on air pollutant emissions due to domestic heating in two urban areas and in California as a whole has also been evaluated. The analysis shows that with the present state of technology, electric heat pumps have higher heating efficiencies than natural gas heaters. Considering the current electricity generation mix in the US, electric heat pumps produce two to four times more NO{sub x}, much less CO, and comparable amount of CO{sub 2} per unit of useful heating energy compared to natural gas heaters. With California mix, electric heat pumps produce comparable NO{sub x} and much less CO and approximately 30% less CO{sub 2} per unit heat output. Replacement of natural gas heaters with electric heat pumps will slightly increase the overall NO{sub x}, and reduce CO and CO{sub 2} emissions in California. The effect of advanced technology power generation and heat pump heating has also been analyzed.

  14. Comparative evaluation of the impacts of domestic gas and electric heat pump heating on air pollution in California

    SciTech Connect (OSTI)

    Ganji, A. (San Francisco State Univ., CA (United States). Div. of Engineering)

    1992-07-01T23:59:59.000Z

    Residential space and water heating accounts for approximately 12% of California's and 15% of the United States, energy consumption. most Of the residential heating is by direct use of natural gas. combustion of natural gas is a contributor to the overall air pollution,, especially CO and NO{sub x} in the urban areas. Another efficient method for domestic water and space heating is use of electric heat pumps, the most popular category of which uses air as its heat source. Electric heat pumps do not emit air pollutants at the point of use, but use electric power, which is a major contributor to air pollution at its point of generation from fossil fuels. It is the specific objective of this report to evaluate and compare the energy efficiency and source air pollutants of natural gas heaters and electric heat pumps used for domestic heating. Effect of replacing natural gas heaters with electric heat pumps on air pollutant emissions due to domestic heating in two urban areas and in California as a whole has also been evaluated. The analysis shows that with the present state of technology, electric heat pumps have higher heating efficiencies than natural gas heaters. Considering the current electricity generation mix in the US, electric heat pumps produce two to four times more NO{sub x}, much less CO, and comparable amount of CO{sub 2} per unit of useful heating energy compared to natural gas heaters. With California mix, electric heat pumps produce comparable NO{sub x} and much less CO and approximately 30% less CO{sub 2} per unit heat output. Replacement of natural gas heaters with electric heat pumps will slightly increase the overall NO{sub x}, and reduce CO and CO{sub 2} emissions in California. The effect of advanced technology power generation and heat pump heating has also been analyzed.

  15. Microbunching Instability Effect Studies and Laser Heater Optimization for the SPARX FEL Accelerator

    SciTech Connect (OSTI)

    Vaccarezza, C.; Chiadroni, E.; Ferrario, M.; Giannessi, L.; Quattromini, M.; Ronsivalle, C.; Venturini, C.; Migliorati, M.; Dattoli, G.

    2010-05-23T23:59:59.000Z

    The effects of microbunching instability for the SPARX accelerator have been analyzed by means of numerical simulations. The laser heater counteracting action has been addressed in order to optimize the parameters of the compression system, either hybrid RF plus magnetic chicane or only magnetic, and possibly enhance the FEL performance.

  16. Efficient generation of extended plasma waveguides with the axicon ignitor-heater scheme

    E-Print Network [OSTI]

    . The plasma col- umn was produced by using an axicon to focus a long laser pulse into a line focusEfficient generation of extended plasma waveguides with the axicon ignitor-heater scheme Y.-F. Xiao for generating extended plasma waveguides is developed by using the axicon lens in conjunction with the ignitor

  17. An Evaluation of Low-BTU Gas from Coal as an Alternate Fuel for Process Heaters

    E-Print Network [OSTI]

    Nebeker, C. J.

    1982-01-01T23:59:59.000Z

    of these factors, the difference between coal and natural gas prices and the project life are difficult to predict. The resulting uncertainty has caused Monsanto to pursue coal gasification for process heaters with cautious optimism, on a site by site basis....

  18. OPTIMIZATION OF TRANSIENT HEATER SETTINGS TO PROVIDE SPATIALLY UNIFORM HEATING IN

    E-Print Network [OSTI]

    Morton, David

    in foundries, baking ovens that cook food, infrared heating systems that cure painted surfaces, and rapidOPTIMIZATION OF TRANSIENT HEATER SETTINGS TO PROVIDE SPATIALLY UNIFORM HEATING IN MANUFACTURING PROCESSES INVOLVING RADIANT HEATING K. J. Daun, J. R. Howell, and D. P. Morton Department of Mechanical

  19. Development of High Efficiency Carbon Dioxide Commercial Heat Pump Water Heater

    SciTech Connect (OSTI)

    Michael PETERSEN; Chad D. BOWERS; Stefan ELBEL; Pega HRNJAK

    2012-07-01T23:59:59.000Z

    Although heat pump water heaters are today widely accepted in both Japan and Europe, where energy costs are high and government incentives for their use exist, acceptance of such products in the US has been limited. While this trend is slowly changing with the introduction of heat pump water heaters into the residential market, but acceptance remains low in the commercial sector. The objective of the presented work is the development of a high efficiency R744 heat pump water heater for commercial applications with effective utilization of the cooling capability for air conditioning and/or refrigeration. The ultimate goal is to achieve total system COP of up to 8. This unit will be targeted at commercial use where some cooling load is typically needed year round, such as restaurants, hotels, nursing homes, and hospitals. This paper presents the performance results from the development of four R744 commercial heat pump water heater packages of approximately 35 kW and comparison to a commercially available baseline R134a unit of the same capacity and footprint. In addition, the influences of an internal heat exchanger and an enhanced evaporator on the system performance are described and recommendations are made for further improvements of the R744 system.

  20. Japan's Residential Energy Demand Outlook to 2030 Considering Energy Efficiency Standards "Top-Runner Approach"

    E-Print Network [OSTI]

    Komiyama, Ryoichi

    2008-01-01T23:59:59.000Z

    Space Heaters, Gas Cooking Appliances, Gas Water Heaters,Oil Water Heaters, Electric Toilet Seats, Vending MachinesFlorescent Lights Gas Water Heaters Oil Water Heaters

  1. NEXT GENERATION COMMERCIAL HEAT PUMPWATER HEATER USING CARBON DIOXIDE USING DIFFERENT IMPROVEMENT APPROACHES

    SciTech Connect (OSTI)

    Chad Bowers; Michael Petersen; Stefan Elbel; Pega Hrnjak

    2012-04-01T23:59:59.000Z

    Although heat pump water heaters are today widely accepted in Japan, where energy costs are high and government incentives for their use exist, acceptance of such a product in the U.S. has been slow. This trend is slowly changing with the introduction of heat pump water heaters into the residential market, but remains in the commercial sector. Barriers to heat pump water heater acceptance in the commercial market have historically been performance, reliability and first/operating costs. The use of carbon dioxide (R744) as the refrigerant in such a system can improve performance for relatively small increase in initial cost and make this technology more appealing. What makes R744 an excellent candidate for use in heat pump water heaters is not only the wide range of ambient temperatures within which it can operate, but also the excellent ability to match water to refrigerant temperatures on the high side, resulting in very high exit water temperatures of up to 82�ºC, as required by sanitary codes in the U.S. (Food Code, 2005), in a single pass, temperatures that are much more difficult to reach with other refrigerants. This can be especially attractive in applications where this water is used for the purpose of sanitation. While reliability has also been of concern historically, dramatic improvements have been made over the last several years through research done in the automotive industry and commercialization of R744 technology in residential water heating mainly in Japan. This paper presents the performance results from the development of an R744 commercial heat pump water heater of approximately 35 kW and a comparison to a baseline R134a unit of the same capacity and footprint. In addition, recommendations are made for further improvements of the R744 system which could result in possible energy savings of up to 20 %.

  2. PERFORMANCE IMPROVEMENTS IN COMMERCIAL HEAT PUMP WATER HEATERS USING CARBON DIOXIDE

    SciTech Connect (OSTI)

    BOWERS C.D.; ELBEL S.; PETERSEN M.; HRNJAK P.S.

    2011-07-01T23:59:59.000Z

    Although heat pump water heaters are today widely accepted in Japan, where energy costs are high and government incentives for their use exist, acceptance of such a product in the U.S. has been slow. This trend is slowly changing with the introduction of heat pump water heaters into the residential market, but remains in the commercial sector. Barriers to heat pump water heater acceptance in the commercial market have historically been performance, reliability and first/operating costs. The use of carbon dioxide (R744) as the refrigerant in such a system can improve performance for relatively small increase in initial cost and make this technology more appealing. What makes R744 an excellent candidate for use in heat pump water heaters is not only the wide range of ambient temperatures within which it can operate, but also the excellent ability to match water to refrigerant temperatures on the high side, resulting in very high exit water temperatures of up to 82�ºC (180�ºF), as required by sanitary codes in the U.S.(Food Code, 2005), in a single pass, temperatures that are much more difficult to reach with other refrigerants. This can be especially attractive in applications where this water is used for the purpose of sanitation. While reliability has also been of concern historically, dramatic improvements have been made over the last several years through research done in the automotive industry and commercialization of R744 technology in residential water heating mainly in Japan. This paper presents the performance results from the development of an R744 commercial heat pump water heater of approximately 35kW and a comparison to a baseline R134a unit of the same capacity and footprint. In addition, recommendations are made for further improvements of the R744 system which could result in possible energy savings of up to 20%.

  3. Internship Contract (Includes Practicum)

    E-Print Network [OSTI]

    Thaxton, Christopher S.

    Internship Contract (Includes Practicum) Student's name-mail: _________________________________________ Internship Agency Contact Agency Name: ____________________________________ Address-mail: __________________________________________ Location of Internship, if different from Agency: ________________________________________________ Copies

  4. Eliminating air heater plugging and corrosion caused by SCR/SNCR systems for NOx control on coal-fired boilers

    SciTech Connect (OSTI)

    Guffre, J. [Paragon Airheater Technologies (United States)

    2007-10-15T23:59:59.000Z

    In a typical coal-fired power plant the rotary regenerative air heater is responsible for 5-10% of the boiler's total efficiency. The three biggest threats to air heater performance deterioration are corrosion of the heat exchange surfaces, plugging, and air heater leakage through the seals. The article concentrates on the vastly increased level of corrosion and plugging issues associated with installing selective catalytic reduction (SCR) and selective non-catalytic reduction (SNCR) systems for controlling nitrogen oxide emissions. Some injected ammonia in the SCR process reacts with SO{sub 2} to form ammonium sulphate and bisulphate (ABS) which is deposited on the air heater element surfaces. This can be overcome by applying coatings, using corrosion-resistant steels, reconfiguring the air heaters to a two layer design, improving air heater blowers, improving technologies for removing ammonia 'slip' before it enters the air heater, and using new catalysts that reduce the oxidation of SO{sub 2} to SO{sub 3}. 4 figs.

  5. Pump apparatus including deconsolidator

    DOE Patents [OSTI]

    Sonwane, Chandrashekhar; Saunders, Timothy; Fitzsimmons, Mark Andrew

    2014-10-07T23:59:59.000Z

    A pump apparatus includes a particulate pump that defines a passage that extends from an inlet to an outlet. A duct is in flow communication with the outlet. The duct includes a deconsolidator configured to fragment particle agglomerates received from the passage.

  6. Method for protecting an electric generator

    DOE Patents [OSTI]

    Kuehnle, Barry W. (Ammon, ID); Roberts, Jeffrey B. (Ammon, ID); Folkers, Ralph W. (Ammon, ID)

    2008-11-18T23:59:59.000Z

    A method for protecting an electrical generator which includes providing an electrical generator which is normally synchronously operated with an electrical power grid; providing a synchronizing signal from the electrical generator; establishing a reference signal; and electrically isolating the electrical generator from the electrical power grid if the synchronizing signal is not in phase with the reference signal.

  7. Joint Electrical Utilities (Iowa)

    Broader source: Energy.gov [DOE]

    Cities may establish utilities to acquire existing electric generating facilities or distribution systems. Acquisition, in this statute, is defined as city involvement, and includes purchase, lease...

  8. DOE Electricity Advisory Committee

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

    of the impact and benefit of wide scale use of variable resources including wind and solar power generation on electric power system reliability and greenhouse gas reduction; 3...

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

    E-Print Network [OSTI]

    Franco, Victor

    2011-01-01T23:59:59.000Z

    Central Air Conditioners and Heat Pumps Including. May,pump technology to extract heat from the surrounding air (air flow requirements of HPWHs increase installation costs. Introduction A heat pump

  10. Performance Analysis of a Transcritical CO2 Heat Pump Water Heater Incorporating a Brazed-Plate Gas-cooler.

    E-Print Network [OSTI]

    Murray, PORTIA

    2015-01-01T23:59:59.000Z

    ??This study focuses on the experimental testing and numerical modeling of a 4.5 kW transcritical CO2 heat pump water heater at Queen’s University in the… (more)

  11. Combustion Air Preheat and Radiant Heat Transfer in Fired Heaters - A Graphical Method for Design and Operating Analysis

    E-Print Network [OSTI]

    Grantom, R. L.

    1981-01-01T23:59:59.000Z

    The installation of combustion air preheat is a widely used technique for improving the fuel efficiency of existing fired heaters and fired tubular reactors. By increasing adiabatic flame temperature, combustion air preheat increases radiant section...

  12. 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...

  13. Radiation Tolerant Programmable Power Supply for the LHC Beam Screen Heaters

    E-Print Network [OSTI]

    Casas, J

    2014-01-01T23:59:59.000Z

    For the next LHC run, it is required to install 200W of heating capacity per LHC beam screen heater to regenerate the beam screen by desorption of gas trapped on its walls. In the LHC, there are 272 beam screen heaters and the associated electronics limit presently the heating capacity to 25W. Those electronics are, for the most part, installed inside the LHC tunnel and exposed to its radiation environment. This paper describes the development of a new programmable power supply card that will be integrated into the existing LHC radiation tolerant electronic infrastructure used by the cryogenic system. Radiation tests were undertaken to qualify a power switch capable of coping with the 230Vrms grid voltage and an analog signal multiplexer; these components are required respectively for satisfying the higher power requirements and for reducing the overall cost by using a single analog to digital converter to sample all the signals.

  14. 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.

  15. Expert Meeting Report: Recommendations for Applying Water Heaters in Combination Space and Domestic Water Heating Systems

    SciTech Connect (OSTI)

    Rudd, A.; Ueno, K.; Bergey, D.; Osser, R.

    2012-07-01T23:59:59.000Z

    The topic of this meeting was 'Recommendations For Applying Water Heaters In Combination Space And Domestic Water Heating Systems.' Presentations and discussions centered on the design, performance, and maintenance of these combination systems, with the goal of developing foundational information toward the development of a Building America Measure Guideline on this topic. The meeting was held at the Westford Regency Hotel, in Westford, Massachusetts on 7/31/2011.

  16. Microcantilever heater-thermometer with integrated temperature-compensated strain sensor

    DOE Patents [OSTI]

    King, William P. (Champaign, IL); Lee, Jungchul (Champaign, IL); Goericke, Fabian T. (Wolfsburg, DE)

    2011-04-19T23:59:59.000Z

    The present invention provides microcantilever hotplate devices which incorporate temperature compensating strain sensors. The microcantilever hotplate devices of the present invention comprise microcantilevers having temperature compensating strain sensors and resistive heaters. The present invention also provides methods for using a microcantilever hotplate for temperature compensated surface stress measurements, chemical/biochemical sensing, measuring various properties of compounds adhered to the microcantilever hotplate surface, or for temperature compensated deflection measurements.

  17. Fuel-Flexible Combustion System for Refinery and Chemical Plant Process Heaters

    SciTech Connect (OSTI)

    Benson, Charles; Wilson, Robert

    2014-04-30T23:59:59.000Z

    This project culminated in the demonstration of a full-scale industrial burner which allows a broad range of “opportunity” gaseous fuels to be cost-effectively and efficiently utilized while generating minimal emissions of criteria air pollutants. The burner is capable of maintaining a stable flame when the fuel composition changes rapidly. This enhanced stability will contribute significantly to improving the safety and reliability of burner operation in manufacturing sites. Process heating in the refining and chemicals sectors is the primary application for this burner. The refining and chemical sectors account for more than 40% of total industrial natural gas use. Prior to the completion of this project, an enabling technology did not exist that would allow these energy-intensive industries to take full advantage of opportunity fuels and thereby reduce their natural gas consumption. Opportunity gaseous fuels include biogas (from animal and agricultural wastes, wastewater plants, and landfills) as well as syngas (from the gasification of biomass, municipal solid wastes, construction wastes, and refinery residuals). The primary challenge to using gaseous opportunity fuels is that their composition and combustion performance differ significantly from those of conventional fuels such as natural gas and refinery fuel gas. An effective fuel-flexible burner must accept fuels that range widely in quality and change in composition over time, often rapidly. In Phase 1 of this project, the team applied computational fluid dynamics analysis to optimize the prototype burner’s aerodynamic, combustion, heat transfer, and emissions performance. In Phase 2, full-scale testing and refinement of two prototype burners were conducted in test furnaces at Zeeco’s offices in Broken Arrow, OK. These tests demonstrated that the full range of conventional and opportunity fuels could be utilized by the project’s burner while achieving robust flame stability and very low levels of air pollutant emissions. In Phase 3, the team retrofitted three fuel-flexible burners into a fired heater at a Shell plant and demonstrated the project’s technology over a 6-month period. The project burners performed well during this period. They remain in commercial service at the Shell plant. Through this work, an improved understanding of flame stabilization mechanisms was gained. Also, methods for accommodating a wide range of fuel compositions were developed. This knowledge facilitated the commercialization of a new generation of burners that are suitable for the fuels of the future.

  18. Advanced Oxyfuel Boilers and Process Heaters for Cost Effective CO2 Capture and Sequestration

    SciTech Connect (OSTI)

    Max Christie; Rick Victor; Bart van Hassel; Nagendra Nagabushana; Juan Li; Joseph Corpus; Jamie Wilson

    2007-03-31T23:59:59.000Z

    The purpose of the advanced boilers and process heaters program is to assess the feasibility of integrating Oxygen Transport Membranes (OTM) into combustion processes for cost effective CO{sub 2} capture and sequestration. Introducing CO{sub 2} capture into traditional combustion processes can be expensive, and the pursuit of alternative methods, like the advanced boiler/process heater system, may yield a simple and cost effective solution. In order to assess the integration of an advanced boiler/process heater process, this program addressed the following tasks: Task 1--Conceptual Design; Task 2--Laboratory Scale Evaluation; Task 3--OTM Development; Task 4--Economic Evaluation and Commercialization Planning; and Task 5--Program Management. This Final report documents and summarizes all of the work performed for the DOE award DE-FC26-01NT41147 during the period from January 2002-March 2007. This report outlines accomplishments for the following tasks: conceptual design and economic analysis, oxygen transport membrane (OTM) development, laboratory scale evaluations, and program management.

  19. Development and Field Trial of Dimpled-Tube Technology for Chemical Industry Process Heaters

    SciTech Connect (OSTI)

    Yaroslav Chudnovsky; Aleksandr Kozlov

    2006-10-12T23:59:59.000Z

    Most approaches to increasing heat transfer rates in the convection sections of gas-fired process heaters involve the incorporation of fins, baffles, turbulizers, etc. to increase either the heat transfer surface area or turbulence or both. Although these approaches are effective in increasing the heat transfer rates, this increase is invariably accompanied by an associated increase in convection section pressure drop as well as, for heaters firing ‘dirty’ fuel mixtures, increased fouling of the tubes – both of which are highly undesirable. GTI has identified an approach that will increase heat transfer rates without a significant increase in pressure drop or fouling rate. Compared to other types of heat transfer enhancement approaches, the proposed dimpled tube approach achieves very high heat transfer rates at the lowest pressure drops. Incorporating this approach into convection sections of chemical industry fired process heaters may increase energy efficiency by 3-5%. The energy efficiency increase will allow reducing firing rates to provide the required heating duty while reducing the emissions of CO2 and NOx.

  20. Economics of Condensing Gas Furnaces and Water Heaters Potential in Residential Single Family Homes

    SciTech Connect (OSTI)

    Lekov, Alex; Franco, Victor; Meyers, Steve

    2010-05-14T23:59:59.000Z

    Residential space and water heating accounts for over 90percent of total residential primary gas consumption in the United States. Condensing space and water heating equipment are 10-30percent more energy-efficient than conventional space and water heating. Currently, condensing gas furnaces represent 40 percent of shipments and are common in the Northern U.S. market. Meanwhile, manufacturers are planning to develop condensing gas storage water heaters to qualify for Energy Star? certification. Consumers, installers, and builders who make decisions about installing space and water heating equipment generally do not perform an analysis to assess the economic impacts of different combinations and efficiencies of space and water heating equipment. Thus, equipment is often installed without taking into consideration the potential life-cycle economic and energy savings of installing space and water heating equipment combinations. Drawing on previous and current analysis conducted for the United States Department of Energy rulemaking on amended standards for furnaces and water heaters, this paper evaluates the extent to which condensing equipment can provide life-cycle cost-effectiveness in a representative sample of single family American homes. The economic analyses indicate that significant energy savings and consumer benefits may result from large-scale introduction of condensing water heaters combined with condensing furnaces in U.S. residential single-family housing, particularly in the Northern region. The analyses also shows that important benefits may be overlooked when policy analysts evaluate the impact of space and water heating equipment separately.

  1. Heat Recovery Considerations for Process Heaters and Boilers

    E-Print Network [OSTI]

    Kumar, A.

    and boilere. A number of methods can be I~loyed to recover heat. The moat COI8)D are by use of recuperative air preheat.'la, regenerative air preheate'la and economizers. Relative advantages and applicability of the three IDIthoda are discuased... be designed for any steam pres~ur~, including sup~rc.riti('al, "1. A wic1er range ur- dcs-ign::. LS . J. Hore eificient that a iire-tub~ unit. 4. They do not l~nd th~m5elves to cOul in~) o:;!lo:;!-? vated...

  2. White Paper on Energy Efficiency Status of Energy-Using Products in China (2011)

    E-Print Network [OSTI]

    Zhou, Nan

    2013-01-01T23:59:59.000Z

    refrigerators, electric storage tank water heaters (electric water heaters for short), variable speed room airhousehold gas tankless water heaters (gas water heaters for

  3. Program Potential: Estimates of Federal Energy Cost Savings from Energy Efficient Procurement

    E-Print Network [OSTI]

    Taylor, Margaret

    2014-01-01T23:59:59.000Z

    Equipment Gas Storage Water Heaters Gas Furnaces Air-SourceHeaters Electric Storage Water Heaters Gas Condensing WaterEquipment Electric Storage Water Heaters Product Category

  4. Reliability analysis of electric power systems including time dependent sources

    E-Print Network [OSTI]

    Kim, Younjong

    1987-01-01T23:59:59.000Z

    of the day. For various PV plant types there are numerous alternative tracking schemes to choose from [5]. Those tracking modes are: ~ No tracking(fixed tilt) ~ East-west horizontal axis tracking ~ North-south horizontal axis ~ Tilted vertical axis..., and vertical variations of temperature. Theses phenomena are of concern to the WTG planners, because excessive shear and turbulence forces can have destructive effects and vary the output. Windmills produce mechanical energy which in turn is changed...

  5. Report on International Collaboration Involving the FE Heater and HG-A Tests at Mont Terri

    SciTech Connect (OSTI)

    Houseworth, Jim; Rutqvist, Jonny; Asahina, Daisuke; Chen, Fei; Vilarrasa, Victor; Liu, Hui-Hai; Birkholzer, Jens

    2013-11-06T23:59:59.000Z

    Nuclear waste programs outside of the US have focused on different host rock types for geological disposal of high-level radioactive waste. Several countries, including France, Switzerland, Belgium, and Japan are exploring the possibility of waste disposal in shale and other clay-rich rock that fall within the general classification of argillaceous rock. This rock type is also of interest for the US program because the US has extensive sedimentary basins containing large deposits of argillaceous rock. LBNL, as part of the DOE-NE Used Fuel Disposition Campaign, is collaborating on some of the underground research laboratory (URL) activities at the Mont Terri URL near Saint-Ursanne, Switzerland. The Mont Terri project, which began in 1995, has developed a URL at a depth of about 300 m in a stiff clay formation called the Opalinus Clay. Our current collaboration efforts include two test modeling activities for the FE heater test and the HG-A leak-off test. This report documents results concerning our current modeling of these field tests. The overall objectives of these activities include an improved understanding of and advanced relevant modeling capabilities for EDZ evolution in clay repositories and the associated coupled processes, and to develop a technical basis for the maximum allowable temperature for a clay repository. The R&D activities documented in this report are part of the work package of natural system evaluation and tool development that directly supports the following Used Fuel Disposition Campaign (UFDC) objectives: ? Develop a fundamental understanding of disposal-system performance in a range of environments for potential wastes that could arise from future nuclear-fuel-cycle alternatives through theory, simulation, testing, and experimentation. ? Develop a computational modeling capability for the performance of storage and disposal options for a range of fuel-cycle alternatives, evolving from generic models to more robust models of performance assessment. For the purpose of validating modeling capabilities for thermal-hydro-mechanical (THM) processes, we developed a suite of simulation models for the planned full-scale FE Experiment to be conducted in the Mont Terri URL, including a full three-dimensional model that will be used for direct comparison to experimental data once available. We performed for the first time a THM analysis involving the Barcelona Basic Model (BBM) in a full three-dimensional field setting for modeling the geomechanical behavior of the buffer material and its interaction with the argillaceous host rock. We have simulated a well defined benchmark that will be used for codeto- code verification against modeling results from other international modeling teams. The analysis highlights the complex coupled geomechanical behavior in the buffer and its interaction with the surrounding rock and the importance of a well characterized buffer material in terms of THM properties. A new geomechanical fracture-damage model, TOUGH-RBSN, was applied to investigate damage behavior in the ongoing HG-A test at Mont Terri URL. Two model modifications have been implemented so that the Rigid-Body-Spring-Network (RBSN) model can be used for analysis of fracturing around the HG-A microtunnel. These modifications are (1) a methodology to compute fracture generation under compressive stress conditions and (2) a method to represent anisotropic elastic and strength properties. The method for computing fracture generation under compressive load produces results that roughly follow trends expected for homogeneous and layered systems. Anisotropic properties for the bulk rock were represented in the RBSN model using layered heterogeneity and gave bulk material responses in line with expectations. These model improvements were implemented for an initial model of fracture damage at the HG-A test. While the HG-A test model results show some similarities with the test observations, differences between the model results and observations remain.

  6. Thermoacoustic magnetohydrodynamic electrical generator

    DOE Patents [OSTI]

    Wheatley, J.C.; Swift, G.W.; Migliori, A.

    1984-11-16T23:59:59.000Z

    A thermoacoustic magnetohydrodynamic electrical generator includes an intrinsically irreversible thermoacoustic heat engine coupled to a magnetohydrodynamic electrical generator. The heat engine includes an electrically conductive liquid metal as the working fluid and includes two heat exchange and thermoacoustic structure assemblies which drive the liquid in a push-pull arrangement to cause the liquid metal to oscillate at a resonant acoustic frequency on the order of 1000 Hz. The engine is positioned in the field of a magnet and is oriented such that the liquid metal oscillates in a direction orthogonal to the field of the magnet, whereby an alternating electrical potential is generated in the liquid metal. Low-loss, low-inductance electrical conductors electrically connected to opposite sides of the liquid metal conduct an output signal to a transformer adapted to convert the low-voltage, high-current output signal to a more usable higher voltage, lower current signal.

  7. Thermoacoustic magnetohydrodynamic electrical generator

    DOE Patents [OSTI]

    Wheatley, John C. (Los Alamos, NM); Swift, Gregory W. (Los Alamos, NM); Migliori, Albert (Santa Fe, NM)

    1986-01-01T23:59:59.000Z

    A thermoacoustic magnetohydrodynamic electrical generator includes an intrinsically irreversible thermoacoustic heat engine coupled to a magnetohydrodynamic electrical generator. The heat engine includes an electrically conductive liquid metal as the working fluid and includes two heat exchange and thermoacoustic structure assemblies which drive the liquid in a push-pull arrangement to cause the liquid metal to oscillate at a resonant acoustic frequency on the order of 1,000 Hz. The engine is positioned in the field of a magnet and is oriented such that the liquid metal oscillates in a direction orthogonal to the field of the magnet, whereby an alternating electrical potential is generated in the liquid metal. Low-loss, low-inductance electrical conductors electrically connected to opposite sides of the liquid metal conduct an output signal to a transformer adapted to convert the low-voltage, high-current output signal to a more usable higher voltage, lower current signal.

  8. Pacific Northwest Regional Assessment of the Potential

    E-Print Network [OSTI]

    . ...............................................................13 Table 5 Efficiencies of Gas and Electric Space Heaters and Water Heaters......................................33 Table 10 Efficiencies of electric space heaters and water heaters......................................................34 Table 11 Efficiencies of gas space heaters and water heaters

  9. Hybrid and Plug-In Electric Vehicles (Brochure), Vehicle Technologies Program (VTP)

    Broader source: Energy.gov [DOE]

    Describes the basics of electric-drive vehicles, including hybrid electric vehicles, plug-in hybrid electric vehicles, all-electric vehicles, and the various charging options.

  10. Sustainable Electricity Factsheets | ornl.gov

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

    Electricity Factsheets SHARE Sustainable Electricity Factsheets 1-5 of 9 Results < > MOVARTI Factsheet MOVARTI Factsheet With a changing mix of generation sources, including more...

  11. Feasibility of Using Measurements of Internal Components ofTankless Water Heaters for Field Monitoring of Energy and Water Use

    SciTech Connect (OSTI)

    Lutz, Jim; Biermayer, Peter

    2008-04-17T23:59:59.000Z

    The objective of this study was to determine if it was feasible to collect information regarding energy use and hot water delivery from tankless gas water heaters using the sensors and controls built into the water heaters. This could then be used to determine the water heater efficiency ? the ratio of energy out (hot water delivered) to energy in (energy in the gas) in actual residential installations. The goal was to be as unobtrusive as possible, and to avoid invalidating warranties or exposing researchers to liability issues. If feasible this approach would reduce the costs of instrumentation.This paper describes the limited field and laboratory investigations to determine if using the sensors and controls built into tankless water heaters is feasible for field monitoring.It was more complicated to use the existing gas flow, water and temperature sensors than was anticipated. To get the signals from the existing sensors and controls is difficult and may involve making changes that would invalidate manufacturer warrantees. The procedures and methods for using signals from the existing gas valves, water flow meters and temperature sensors will vary by model. To be able to monitor different models and brands would require detailed information about each model and brand.Based on these findings, we believe that for field monitoring projects it would be easier, quicker and safer to connect external meters to measure the same parameters rather than using the sensors and controls built into tankless water heaters.

  12. AVTA: 2010 Electric Vehicles International Neighborhood Electric...

    Energy Savers [EERE]

    10 Electric Vehicles International Neighborhood Electric Vehicle Testing Results AVTA: 2010 Electric Vehicles International Neighborhood Electric Vehicle Testing Results The...

  13. DSM Electricity Savings Potential in the Buildings Sector in APP Countries

    E-Print Network [OSTI]

    McNeil, MIchael

    2011-01-01T23:59:59.000Z

    development, like for heat pump water heaters. The objectiveheat pumps Warm-air furnaces Package boilers Storage & instantaneous water heaters

  14. 2015-03-25 Issuance: Definitions Regarding Consumer Water Heaters Notice of Proposed Rulemaking

    Broader source: Energy.gov [DOE]

    This document is a pre-publication Federal Register notice of proposed rulemaking regarding definitions for consumer water heaters, as issued by the Acting Deputy Assistant Secretary for Energy Efficiency on March 25, 2015. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

  15. 2015-03-26 Issuance: Residential Water Heaters; Notice of Proposed Rulemaking Withdrawal

    Broader source: Energy.gov [DOE]

    This document is a pre-publication Federal Register notice of proposed rulemaking withdrawal regarding Energy Conservation Standards for Residential Water Heaters, as issued by the Acting Deputy Assistant Secretary for Energy Efficiency on March 26, 2015. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

  16. Estimating the Cost and Energy Efficiency of a Solar Water Heater |

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelinesProvedDecember 2005DepartmentDecember U.S. Department of EnergyEqualHeaters |

  17. 2014-06-27 Issuance: Test Procedures for Residential and Commercial Water Heaters; Final Rule

    Broader source: Energy.gov [DOE]

    This document is a pre-publication Federal Register final rule regarding test procedures for residential and commercial water heaters, as issued by the Deputy Assistant Secretary for Energy Efficiency on June 27, 2014. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

  18. Electricity Reliability

    E-Print Network [OSTI]

    Electricity Delivery and Energy Reliability High Temperature Superconductivity (HTS) Visualization in the future because they have virtually no resistance to electric current, offering the possibility of new electric power equipment with more energy efficiency and higher capacity than today's systems

  19. Estimate of Technical Potential for Minimum Efficiency Performance Standards in 13 Major World Economies

    E-Print Network [OSTI]

    Letschert, Virginie

    2013-01-01T23:59:59.000Z

    16 Table 6. Electric Storage Water Heater17 Table 7. Gas Storage Water Heater17 Table 8. Instantaneous Water Heater

  20. Business Case for Energy Efficiency in Support of Climate Change Mitigation, Economic and Societal Benefits in the United States

    E-Print Network [OSTI]

    Bojda, Nicholas

    2011-01-01T23:59:59.000Z

    by DOE. Electric storage tank water heaters These data havewater heaters, gas storage tank water heater efficiency can

  1. Max Tech Appliance Design: Potential for Maximizing U.S. Energy Savings through Standards

    E-Print Network [OSTI]

    Garbesi, Karina

    2011-01-01T23:59:59.000Z

    potential to do so. Heat pump Water heaters, space Useswater heaters Electric space heaters other than heat pumps

  2. Catalog of DC Appliances and Power Systems

    E-Print Network [OSTI]

    Garbesi, Karina

    2012-01-01T23:59:59.000Z

    Lighting-Torchiere Electric Other Electric Water HeatersSolar Water Heaters Color Televisions and Set-Top BoxesTorchiere Electric Water Heaters Refrigerators Electric

  3. Global Potential of Energy Efficiency Standards and Labeling Programs

    E-Print Network [OSTI]

    McNeil, Michael A

    2008-01-01T23:59:59.000Z

    Domestic Electric Storage Water Heater (DESWH) Test MethodsLevels for Electric Storage Water Heaters Table 22 UnitLevels for Electric Storage Water Heaters Region Electric

  4. Optimizing Energy Savings from Direct-DC in U.S. Residential Buildings

    E-Print Network [OSTI]

    Garbesi, Karina

    2012-01-01T23:59:59.000Z

    heat pump technologies where applicable models exist (electric water heaters,Heat Pumps for AC Electric Clothes Dryers Electric Secondary Space Heaters Dishwashers Electric Water Heaters (

  5. Research and Design of a Sample Heater for Beam Line 6-2c Transmission X-ray Microscope

    SciTech Connect (OSTI)

    Policht, Veronica; /Loyola U., Chicago /SLAC

    2012-08-27T23:59:59.000Z

    There exists a need for environmental control of samples to be imaged by the Transmission X-Ray Microscope (TXM) at the SSRLs Beam Line 6-2c. In order to observe heat-driven chemical or morphological changes that normally occur in situ, microscopes require an additional component that effectively heats a given sample without heating any of the microscope elements. The confinement of the heat and other concerns about the heaters integrity limit which type of heater is appropriate for the TXM. The bulk of this research project entails researching different heating methods used previously in microscopes, but also in other industrial applications, with the goal of determining the best-fitting method, and finally in designing a preliminary sample heater.

  6. Coweta-Fayette EMC- Residential Solar Water Heater Rebate Program (Georgia)

    Broader source: Energy.gov [DOE]

    Coweta-Fayette Electric Membership Corporation (EMC) provides electric and natural gas service to 58,000 customers in Georgia's Coweta, Fayette, Meriwether, Heard, Troop and Fulton counties.

  7. Electric Power annual 1996: Volume II

    SciTech Connect (OSTI)

    NONE

    1997-12-01T23:59:59.000Z

    This document presents a summary of electric power industry statistics. Data are included on electric utility retail sales of electricity, revenues, environmental information, power transactions, emissions, and demand-side management.

  8. Effect of oxide films on hydrogen permeability of candidate Stirling heater head tube alloys

    SciTech Connect (OSTI)

    Schuon, S R; Misencik, J A

    1981-01-01T23:59:59.000Z

    High pressure hydrogen has been selected as the working fluid for the developmental automotive Stirling engine. Containment of the working fluid during operation of the engine at high temperatures and at high hydrogen gas pressures is essential for the acceptance of the Stirling engine as an alternative to the internal combustion engine. Most commercial alloys are extremely permeable to pure hydrogen at high temperatures. A program was undertaken at NASA Lewis Research Center (LeRC) to reduce hydrogen permeability in the Stirling engine heater head tubes by doping the hydrogen working fluid with CO or CO/sub 2/. Small additions of these gases were shown to form an oxide on the inside tube wall and thus reduce hydrogen permeability. A study of the effects of dopant concentration, alloy composition, and effects of surface oxides on hydrogen permeability in candidate heater head tube alloys is summarized. Results showed that hydrogen permeability was similar for iron-base alloys (N-155, A286, IN800, 19-9DL, and Nitronic 40), cobalt-base alloys (HS-188) and nickel-base alloys (IN718). In general, the permeability of the alloys decreased with increasing concentration of CO or CO/sub 2/ dopant, with increasing oxide thickness, and decreasing oxide porosity. At high levels of dopants, highly permeable liquid oxides formed on those alloys with greater than 50% Fe content. Furthermore, highly reactive minor alloying elements (Ti, Al, Nb, and La) had a strong influence on reducing hydrogen permeability.

  9. Energy 101: Electric Vehicles

    ScienceCinema (OSTI)

    None

    2013-05-29T23:59:59.000Z

    This edition of Energy 101 highlights the benefits of electric vehicles, including improved fuel efficiency, reduced emissions, and lower maintenance costs. For more information on electric vehicles from the Office of Energy Efficiency and Renewable Energy, visit the Vehicle Technologies Program website: http://www1.eere.energy.gov/vehiclesandfuels/

  10. Power generation method including membrane separation

    DOE Patents [OSTI]

    Lokhandwala, Kaaeid A. (Union City, CA)

    2000-01-01T23:59:59.000Z

    A method for generating electric power, such as at, or close to, natural gas fields. The method includes conditioning natural gas containing C.sub.3+ hydrocarbons and/or acid gas by means of a membrane separation step. This step creates a leaner, sweeter, drier gas, which is then used as combustion fuel to run a turbine, which is in turn used for power generation.

  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. Electrically conductive cellulose composite

    DOE Patents [OSTI]

    Evans, Barbara R.; O'Neill, Hugh M.; Woodward, Jonathan

    2010-05-04T23:59:59.000Z

    An electrically conductive cellulose composite includes a cellulose matrix and an electrically conductive carbonaceous material incorporated into the cellulose matrix. The electrical conductivity of the cellulose composite is at least 10 .mu.S/cm at 25.degree. C. The composite can be made by incorporating the electrically conductive carbonaceous material into a culture medium with a cellulose-producing organism, such as Gluconoacetobacter hansenii. The composites can be used to form electrodes, such as for use in membrane electrode assemblies for fuel cells.

  13. Perforation patterned electrical interconnects

    DOE Patents [OSTI]

    Frey, Jonathan

    2014-01-28T23:59:59.000Z

    This disclosure describes systems and methods for increasing the usable surface area of electrical contacts within a device, such as a thin film solid state device, through the implementation of electrically conductive interconnects. Embodiments described herein include the use of a plurality of electrically conductive interconnects that penetrate through a top contact layer, through one or more multiple layers, and into a bottom contact layer. The plurality of conductive interconnects may form horizontal and vertical cross-sectional patterns. The use of lasers to form the plurality of electrically conductive interconnects from reflowed layer material further aids in the manufacturing process of a device.

  14. Electrical power distribution control methods, electrical energy demand monitoring methods, and power management devices

    DOE Patents [OSTI]

    Chassin, David P. (Pasco, WA); Donnelly, Matthew K. (Kennewick, WA); Dagle, Jeffery E. (Richland, WA)

    2011-12-06T23:59:59.000Z

    Electrical power distribution control methods, electrical energy demand monitoring methods, and power management devices are described. In one aspect, an electrical power distribution control method includes providing electrical energy from an electrical power distribution system, applying the electrical energy to a load, providing a plurality of different values for a threshold at a plurality of moments in time and corresponding to an electrical characteristic of the electrical energy, and adjusting an amount of the electrical energy applied to the load responsive to an electrical characteristic of the electrical energy triggering one of the values of the threshold at the respective moment in time.

  15. Electrical power distribution control methods, electrical energy demand monitoring methods, and power management devices

    DOE Patents [OSTI]

    Chassin, David P. (Pasco, WA); Donnelly, Matthew K. (Kennewick, WA); Dagle, Jeffery E. (Richland, WA)

    2006-12-12T23:59:59.000Z

    Electrical power distribution control methods, electrical energy demand monitoring methods, and power management devices are described. In one aspect, an electrical power distribution control method includes providing electrical energy from an electrical power distribution system, applying the electrical energy to a load, providing a plurality of different values for a threshold at a plurality of moments in time and corresponding to an electrical characteristic of the electrical energy, and adjusting an amount of the electrical energy applied to the load responsive to an electrical characteristic of the electrical energy triggering one of the values of the threshold at the respective moment in time.

  16. Electric power monthly

    SciTech Connect (OSTI)

    NONE

    1995-08-01T23:59:59.000Z

    The Energy Information Administration (EIA) prepares the Electric Power Monthly (EPM) for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. This publication provides monthly statistics for net generation, fossil fuel consumption and stocks, quantity and quality of fossil fuels, cost of fossil fuels, electricity sales, revenue, and average revenue per kilowatthour of electricity sold. Data on net generation, fuel consumption, fuel stocks, quantity and cost of fossil fuels are also displayed for the North American Electric Reliability Council (NERC) regions. The EIA publishes statistics in the EPM on net generation by energy source, consumption, stocks, quantity, quality, and cost of fossil fuels; and capability of new generating units by company and plant. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead.

  17. Non-ferromagnetic overburden casing

    DOE Patents [OSTI]

    Vinegar, Harold J. (Bellaire, TX); Harris, Christopher Kelvin (Houston, TX); Mason, Stanley Leroy (Allen, TX)

    2010-09-14T23:59:59.000Z

    Systems, methods, and heaters for treating a subsurface formation are described herein. At least one system for electrically insulating an overburden portion of a heater wellbore is described. The system may include a heater wellbore located in a subsurface formation and an electrically insulating casing located in the overburden portion of the heater wellbore. The casing may include at least one non-ferromagnetic material such that ferromagnetic effects are inhibited in the casing.

  18. Electric coheating as a means to test duct efficiency: A review and analysis of the literature

    SciTech Connect (OSTI)

    Andrews, J.W.

    1995-08-01T23:59:59.000Z

    Recent published literature on electric coheating was reviewed in order to assess its suitability for use in a method of test for the efficiency of residential duct systems. Electric coheating is the research use of electric heaters within the heated space to assess the thermal integrity of the building envelope. Information was sought in two primary areas: (1) experimental methodology and (2) accuracy of the coheating method. A variety of experimental variations was found, and the method was judged, on the basis of published data, to be capable of sufficient accuracy for use in duct testing.

  19. BOILING CRISIS:THEORY,SIMULATION,AND EXPERIMENTSBOILING CRISIS: THEORY, SIMULATION, AND EXPERIMENTS Boiling is a very efficient way to transfer heat from a heater to the liquid heat carrier. We discuss the

    E-Print Network [OSTI]

    Nikolayev, Vadim S.

    that separates the liquid from the heater. Film boiling can be also observed in the kitchen by sprinkling water onto a hot frying pan. In spite of the large temperature of the heater (the pan) the water drops Boiling is a very efficient way to transfer heat from a heater to the liquid heat carrier. We discuss

  20. Electric power annual 1995. Volume II

    SciTech Connect (OSTI)

    NONE

    1996-12-01T23:59:59.000Z

    This document summarizes pertinent statistics on various aspects of the U.S. electric power industry for the year and includes a graphic presentation. Data is included on electric utility retail sales and revenues, financial statistics, environmental statistics of electric utilities, demand-side management, electric power transactions, and non-utility power producers.

  1. Central Electric Coop. Oregon Trail Electric Coop. Douglas Electric

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

    Central Electric Coop. Oregon Trail Electric Coop. Douglas Electric Coop. Blachly- Lane Co. Coop Umatilla Electric Coop. Hermiston Milton- Freewater Idaho Co Light & Power Coop....

  2. Building America Technology Solutions for New and Existing Homes: Multifamily Central Heat Pump Water Heaters (Fact Sheet)

    Broader source: Energy.gov [DOE]

    To evaluate the performance of central heat pump water heaters for multifamily applications, the Alliance for Residential Building Innovation team monitored the performance of a 10.5 ton central HPWH installed on a student apartment building at the West Village Zero Net Energy Community in Davis, California, for 16 months.

  3. Abstract--Titanium nitride (TiN) has been investigated as a material for MEMS hotplate heaters operating at high

    E-Print Network [OSTI]

    Technische Universiteit Delft

    TiN Bond pad TiN Figure 1. Schematic cross section of the hotplate. Titanium Nitride for MEMSAbstract--Titanium nitride (TiN) has been investigated as a material for MEMS hotplate heaters boundaries start to diffuse above one- third of the melting point. As a result, residual stresses relax [3

  4. Renewable Electricity Generation (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-09-01T23:59:59.000Z

    This document highlights DOE's Office of Energy Efficiency and Renewable Energy's advancements in renewable electricity generation technologies including solar, water, wind, and geothermal.

  5. Electric power monthly, March 1995

    SciTech Connect (OSTI)

    NONE

    1995-03-20T23:59:59.000Z

    This report for March 1995, presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead.

  6. Thermovoltaic semiconductor device including a plasma filter

    DOE Patents [OSTI]

    Baldasaro, Paul F. (Clifton Park, NY)

    1999-01-01T23:59:59.000Z

    A thermovoltaic energy conversion device and related method for converting thermal energy into an electrical potential. An interference filter is provided on a semiconductor thermovoltaic cell to pre-filter black body radiation. The semiconductor thermovoltaic cell includes a P/N junction supported on a substrate which converts incident thermal energy below the semiconductor junction band gap into electrical potential. The semiconductor substrate is doped to provide a plasma filter which reflects back energy having a wavelength which is above the band gap and which is ineffectively filtered by the interference filter, through the P/N junction to the source of radiation thereby avoiding parasitic absorption of the unusable portion of the thermal radiation energy.

  7. Electrical Engineer

    Broader source: Energy.gov [DOE]

    This position is located in the Office of Electric Reliability. The Office of Electric Reliability helps protect and improve the reliability and security of the nation's bulk power system through...

  8. Electrical shock accident investigation

    SciTech Connect (OSTI)

    Not Available

    1994-09-30T23:59:59.000Z

    This report documents results of the accident investigation of an electrical shock received by two subcontractor employees on May 13, 1994, at the Pinellas Plant. The direct cause of the electrical shock was worker contact with a cut ``hot`` wire and a grounded panelboard (PPA) enclosure. Workers presumed that all wires in the enclosure were dead at the time of the accident and did not perform thorough Lockout/Tagout (LO/TO). Three contributing causes were identified. First, lack of guidance in the drawing for the modification performed in 1987 allowed the PPA panel to be used as a junction box. The second contributing cause is that Environmental, Safety and Health (ES&H) procedures do not address multiple electrical sources in an enclosure. Finally, the workers did not consider the possibility of multiple electrical sources. The root cause of the electrical shock was the inadequacy of administrative controls, including construction requirement and LO/TO requirements, and subcontractor awareness regarding multiple electrical sources. Recommendations to prevent further reoccurrence of this type of accident include revision of ES&H Standard 2.00, Electrical Safety Program Manual, to document requirements for multiple electrical sources in a single enclosure to specify a thorough visual inspection as part of the voltage check process. In addition, the formality of LO/TO awareness training for subcontractor electricians should be increased.

  9. Electric power annual 1992

    SciTech Connect (OSTI)

    Not Available

    1994-01-06T23:59:59.000Z

    The Electric Power Annual presents a summary of electric utility statistics at national, regional and State levels. The objective of the publication is to provide industry decisionmakers, government policymakers, analysts and the general public with historical data that may be used in understanding US electricity markets. The Electric Power Annual is prepared by the Survey Management Division; Office of Coal, Nuclear, Electric and Alternate Fuels; Energy Information Administration (EIA); US Department of Energy. ``The US Electric Power Industry at a Glance`` section presents a profile of the electric power industry ownership and performance, and a review of key statistics for the year. Subsequent sections present data on generating capability, including proposed capability additions; net generation; fossil-fuel statistics; retail sales; revenue; financial statistics; environmental statistics; electric power transactions; demand-side management; and nonutility power producers. In addition, the appendices provide supplemental data on major disturbances and unusual occurrences in US electricity power systems. Each section contains related text and tables and refers the reader to the appropriate publication that contains more detailed data on the subject matter. Monetary values in this publication are expressed in nominal terms.

  10. ELECTRICAL ENGINEERING at PORTLAND STATE UNIVERSITY Electrical Engineering deals with the study and application of electricity, electronics and electromagnetism. It covers a range of

    E-Print Network [OSTI]

    Bertini, Robert L.

    and application of electricity, electronics and electromagnetism. It covers a range of topics including power

  11. City of San Jose- Solar Hot Water Heaters and Photovoltaic Systems Permit Requirements

    Broader source: Energy.gov [DOE]

    Building, Planning and Electrical Permits are required for Photovoltiac (PV) systems installed in San Jose. In most cases, PV systems must also undergo a Building Plan Review and an Electrical...

  12. Local Enforcement of Appliance Efficiency Standards and Labeling Program in China: Progress and Challenges

    E-Print Network [OSTI]

    Zheng, Nina

    2014-01-01T23:59:59.000Z

    lamps Electric storage water heaters Small and medium 3-storage electric water heaters, household induction cooktopsSichuan Storage electric water heaters Jiangsu Small and

  13. Status of the Local Enforcement of Energy Efficiency Standards and Labeling Program in China

    E-Print Network [OSTI]

    Zhou, Nan

    2013-01-01T23:59:59.000Z

    and electric storage water heaters were selected. Forlamps Electric storage water heaters Sichuan Shandonglamps Electric storage water heaters Small and medium 3-

  14. Evaluation of Local Enforcement of Energy Efficiency Standards and Labeling Program in China

    E-Print Network [OSTI]

    Zheng, Nina

    2013-01-01T23:59:59.000Z

    storage electric water heaters, household induction cooktopslamps Electric storage water heaters Small and medium 3-lamps Storage electric water heaters Small and medium 3-

  15. White Paper on Energy Efficiency Status of Energy-Using Products in China (2012)

    E-Print Network [OSTI]

    Zhou, Nan

    2013-01-01T23:59:59.000Z

    electric storage tank water heaters, washing machines,Electric storage tank water heaters Washing machines (top-furnace, electric storage tank water heaters, variable speed

  16. Local Enforcement of Appliance Efficiency Standards and Labeling Program in China: Progress and Challenges

    E-Print Network [OSTI]

    Zheng, Nina

    2014-01-01T23:59:59.000Z

    lamps Electric storage water heaters Small and medium 3-efficacy Electric storage water heaters Inherent energylamps Electric storage water heaters Small and medium 3-

  17. Status of the Local Enforcement of Energy Efficiency Standards and Labeling Program in China

    E-Print Network [OSTI]

    Zhou, Nan

    2013-01-01T23:59:59.000Z

    lamp”), and electric storage water heaters were selected.lamps Electric storage water heaters Sichuan Shandonglamps Electric storage water heaters Small and medium 3-

  18. Evaluation of Local Enforcement of Energy Efficiency Standards and Labeling Program in China

    E-Print Network [OSTI]

    Zheng, Nina

    2013-01-01T23:59:59.000Z

    lamps Electric storage water heaters Small and medium 3-conditioners, electric storage water heaters, variable speedlamps Electric storage water heaters Small and medium 3-

  19. BUILDOUT AND UPGRADE OF CENTRAL EMERGENCY GENERATOR SYSTEM, GENERATOR 3 AND 4 ELECTRICAL INSTALLATION

    SciTech Connect (OSTI)

    Gary D. Seifert; G. Shawn West; Kurt S. Myers; Jim Moncur

    2006-07-01T23:59:59.000Z

    SECTION 01000—SUMMARY OF WORK PART 1—GENERAL 1.1 SUMMARY The work to be performed under this project consists of providing the labor, equipment, and materials to perform "Buildout and Upgrade of Central Emergency Generator System, Generator 3 and 4 Electrical Installation" for the National Aeronautics and Space Administration at the Dryden Flight Research Center (NASA/DFRC), Edwards, California 93523. All modifications to existing substations and electrical distribution systems are the responsibility of the contractor. It is the contractor’s responsibility to supply a complete and functionally operational system. The work shall be performed in accordance with these specifications and the related drawings. The work of this project is defined by the plans and specifications contained and referenced herein. This work specifically includes but is not limited to the following: Scope of Work - Installation 1. Install all electrical wiring and controls for new generators 3 and 4 to match existing electrical installation for generators 1 and 2 and in accordance with drawings. Contractor shall provide as-built details for electrical installation. 2. Install battery charger systems for new generators 3 and 4 to match existing battery charging equipment and installation for generators 1 and 2. This may require exchange of some battery charger parts already on-hand. Supply power to new battery chargers from panel and breakers as shown on drawings. Utilize existing conduits already routed to generators 3 and 4 to field route the new wiring in the most reasonable way possible. 3. Install electrical wiring for fuel/lube systems for new generators 3 and 4 to match existing installation for generators 1 and 2. Supply power to lube oil heaters and fuel system (day tanks) from panel and breakers as shown on drawings. Utilize existing conduits already routed to generators 3 and 4 to field route the new wiring in the most reasonable way possible. Add any conduits necessary to complete wiring to fuel systems. 4. Install power to new dampers/louvers from panel and breakers as shown on drawings. Wiring shall be similar to installation to existing dampers/louvers. Utilize existing conduits already routed to louver areas to field route the new wiring in the most reasonable way possible. Add any conduits necessary to complete wiring to new dampers/louvers. 5. Install power to jacket water heaters for new generators 3 and 4 from panel and breakers as shown on drawings. Utilize existing conduits already routed to generators 3 and 4 to field route the new wiring in the most reasonable way possible. 6. Install new neutral grounding resistor and associated parts and wiring for new generators 3 and 4 to match existing installation for generators 1 and 2. Grounding resistors will be Government Furnished Equipment (GFE). 7. Install two new switchgear sections, one for generator #3 and one for generator #4, to match existing generator #1 cubicle design and installation and in accordance with drawings and existing parts lists. This switchgear will be provided as GFE. 8. Ground all new switchgear, generators 3 and 4, and any other new equipment to match existing grounding connections for generators 1 and 2, switchgear and other equipment. See drawings for additional details. Grounding grid is already existing. Ensure that all grounding meets National Electrical Code requirements. 9. Cummins DMC control for the generator and switchgear syste

  20. Pedernales Electric Cooperative- HVAC Rebate Program

    Broader source: Energy.gov [DOE]

    Pedernales Electric Cooperative offers equipment rebates to members who install energy efficient HVAC equipment. Eligible equipment includes:...

  1. Electric vehicles

    SciTech Connect (OSTI)

    Not Available

    1990-03-01T23:59:59.000Z

    Quiet, clean, and efficient, electric vehicles (EVs) may someday become a practical mode of transportation for the general public. Electric vehicles can provide many advantages for the nation's environment and energy supply because they run on electricity, which can be produced from many sources of energy such as coal, natural gas, uranium, and hydropower. These vehicles offer fuel versatility to the transportation sector, which depends almost solely on oil for its energy needs. Electric vehicles are any mode of transportation operated by a motor that receives electricity from a battery or fuel cell. EVs come in all shapes and sizes and may be used for different tasks. Some EVs are small and simple, such as golf carts and electric wheel chairs. Others are larger and more complex, such as automobile and vans. Some EVs, such as fork lifts, are used in industries. In this fact sheet, we will discuss mostly automobiles and vans. There are also variations on electric vehicles, such as hybrid vehicles and solar-powered vehicles. Hybrid vehicles use electricity as their primary source of energy, however, they also use a backup source of energy, such as gasoline, methanol or ethanol. Solar-powered vehicles are electric vehicles that use photovoltaic cells (cells that convert solar energy to electricity) rather than utility-supplied electricity to recharge the batteries. This paper discusses these concepts.

  2. Building America Technology Solutions for New and Existing Homes: Field Performance of Heat Pump Water Heaters in the Northeast (Fact Sheet)

    Broader source: Energy.gov [DOE]

    In this project, the Consortium for Advanced Residential Buildings evaluated three newly released heat pump water heater products in order to provide publicly available field data on these products.

  3. DETERMINATION OF IN-SITU THERMAL PROPERTIES OF STRIPA GRANITE FROM TEMPERATURE MEASUREMENTS IN THE FULL-SCALE HEATER EXPERIMENTS: METHOD AND PRELIMINARY RESULTS

    E-Print Network [OSTI]

    Jeffry, J.A.

    2010-01-01T23:59:59.000Z

    Mechanical Properties of Granite:Stripa, Sweden. TerraTekStorage of Nuclear Waste in Granite by P. A. Witherspoon, P.Discontinuities in the Strira Granite -- Time-Scale Heater

  4. Apparatuses and methods for generating electric fields

    DOE Patents [OSTI]

    Scott, Jill R; McJunkin, Timothy R; Tremblay, Paul L

    2013-08-06T23:59:59.000Z

    Apparatuses and methods relating to generating an electric field are disclosed. An electric field generator may include a semiconductive material configured in a physical shape substantially different from a shape of an electric field to be generated thereby. The electric field is generated when a voltage drop exists across the semiconductive material. A method for generating an electric field may include applying a voltage to a shaped semiconductive material to generate a complex, substantially nonlinear electric field. The shape of the complex, substantially nonlinear electric field may be configured for directing charged particles to a desired location. Other apparatuses and methods are disclosed.

  5. Electric Vehicles

    ScienceCinema (OSTI)

    Ozpineci, Burak

    2014-07-23T23:59:59.000Z

    Burak Ozpineci sees a future where electric vehicles charge while we drive them down the road, thanks in part to research under way at ORNL.

  6. Electric Vehicles

    SciTech Connect (OSTI)

    Ozpineci, Burak

    2014-05-02T23:59:59.000Z

    Burak Ozpineci sees a future where electric vehicles charge while we drive them down the road, thanks in part to research under way at ORNL.

  7. The impact of water flow configuration on crystallisation in LiBr/H2O absorption water heater

    SciTech Connect (OSTI)

    Wang, Kai [ORNL; Abdelaziz, Omar [ORNL; Vineyard, Edward Allan [ORNL

    2011-03-01T23:59:59.000Z

    Lithium Bromide (LiBr) strong solution entering the absorber tends to crystallise when the absorber temperature is increased for a fixed evaporating pressure. This is considered the key technical barrier for the development of a LiBr absorption heat pump water heater. There are several approaches to avoid the crystallisation problem, such as chemical crystallisation inhibitors, heat and mass transfer enhancement and thermodynamic cycle modification. This paper investigates and compares two flow configurations of LiBr absorption heat pump water heater to evaluate the allowable operating conditions for each. The simulation results indicated that introducing the process water through the absorber first results in lower absorber temperature and hence less tendency for crystallisation.

  8. Ch 16 Electric Charge &Ch 16. Electric Charge & Electric Field

    E-Print Network [OSTI]

    Yoo, S. J. Ben

    Ch 16 Electric Charge &Ch 16. Electric Charge & Electric Field Liu UCD Phy1B 2012 #12;I Basic ConceptsI. Basic Concepts Static electricity: charges at rest Electric charge Like charges repel Unlike charges attract Liu UCD Phy1B 2012 #12;Electric ChargeElectric Charge Electron charge: -eElectron charge

  9. Spatially resolved temperature and heat flux measurements for slow evaporating droplets heated by a microfabricated heater array

    E-Print Network [OSTI]

    Paik, Sokwon

    2006-08-16T23:59:59.000Z

    flux datum per one droplet. No spatial or temporal heat flux information was given. Klassen et al. [12] and di Marzo et al. [13] were the first to use an infrared thermography technique to attempt to measure the spatially and temporally resolved... infrared thermography. Because of the aforementioned limitation of the IR thermography, measurements were only possible outside of the droplets. Michiyoshi and Makino [15] used a dual beam synchroscope to measure the variation of the heater supply...

  10. Electric-drive tractability indicator integrated in hybrid electric vehicle tachometer

    DOE Patents [OSTI]

    Tamai, Goro; Zhou, Jing; Weslati, Feisel

    2014-09-02T23:59:59.000Z

    An indicator, system and method of indicating electric drive usability in a hybrid electric vehicle. A tachometer is used that includes a display having an all-electric drive portion and a hybrid drive portion. The all-electric drive portion and the hybrid drive portion share a first boundary which indicates a minimum electric drive usability and a beginning of hybrid drive operation of the vehicle. The indicated level of electric drive usability is derived from at least one of a percent battery discharge, a percent maximum torque provided by the electric drive, and a percent electric drive to hybrid drive operating cost for the hybrid electric vehicle.

  11. Laboratory Evaluation of Gas-Fired Tankless and Storage Water Heater Approaches to Combination Water and Space Heating

    SciTech Connect (OSTI)

    Kingston, T.; Scott, S.

    2013-03-01T23:59:59.000Z

    Homebuilders are exploring more cost effective combined space and water heating systems (combo systems) with major water heater manufacturers that are offering pre-engineered forced air space heating combo systems. In this project, unlike standardized tests, laboratory tests were conducted that subjected condensing tankless and storage water heater based combo systems to realistic, coincidental space and domestic hot water loads with the following key findings: 1) The tankless combo system maintained more stable DHW and space heating temperatures than the storage combo system. 2) The tankless combo system consistently achieved better daily efficiencies (i.e. 84%-93%) than the storage combo system (i.e. 81%- 91%) when the air handler was sized adequately and adjusted properly to achieve significant condensing operation. When condensing operation was not achieved, both systems performed with lower (i.e. 75%-88%), but similar efficiencies. 3) Air handlers currently packaged with combo systems are not designed to optimize condensing operation. More research is needed to develop air handlers specifically designed for condensing water heaters. 4) System efficiencies greater than 90% were achieved only on days where continual and steady space heating loads were required with significant condensing operation. For days where heating was more intermittent, the system efficiencies fell below 90%.

  12. Meals included in Conference Registrations

    E-Print Network [OSTI]

    Arnold, Jonathan

    Meals included in Conference Registrations Meals included as part of the cost of a conference the most reasonable rates are obtained. Deluxe hotels and motels should be avoided. GSA rates have been for Georgia high cost areas. 75% of these amounts would be $21 for non- high cost areas and $27 for high cost

  13. ADVANCED OXYFUEL BOILERS AND PROCESS HEATERS FOR COST EFFECTIVE CO{sub 2} CAPTURE AND SEQUESTRATION

    SciTech Connect (OSTI)

    David R. Thompson; Lawrence E. Bool; G. Maxwell Christie

    2003-07-01T23:59:59.000Z

    This annual technical progress report summarizes the work accomplished during the first year of the program, January-December 2002, in the following task areas: Task 1--Conceptual Design, Task 2--Laboratory Scale Evaluations, Task 3--OTM Development, Task 4--Economic Evaluation and Commercialization Planning and Task 5--Program Management. The program has experienced significant delays due to several factors. The budget has also been significantly under spent. Based on recent technical successes significant future progress is expected. A number of concepts for integrating Oxygen Transport Membranes (OTMs) into boilers and process heaters to facilitate oxy-fuel combustion have been proposed. A detailed modeling plan has been proposed and early modeling work has focused on developing spreadsheet based models for quick engineering calculations. Combustion reactor laboratory scale evaluations efforts have been delayed due to the closing of Praxair's Tarrytown facility in December 2001. Experimental facilities and personnel have been relocated to Praxair's facility in Tonawanda. The facilities have recently been re-commissioned. Work with the OTM development task has also been delayed as early material selections were discarded. More recently, more promising OTM material compositions have been identified. Economic evaluation commenced. Information was acquired that quantified the attractiveness of the advanced oxygen-fired boiler. CO{sub 2} capture and compression are still estimated to be much less than $10/ton carbon.

  14. ADVANCED OXYFUEL BOILERS AND PROCESS HEATERS FOR COST EFFECTIVE CO2 CAPTURE AND SEQUESTRATION

    SciTech Connect (OSTI)

    John Sirman; Leonard Switzer; Bart van Hassel

    2004-06-01T23:59:59.000Z

    This annual technical progress report summarizes the work accomplished during the second year of the program, January-December 2003, in the following task areas: Task 1--Conceptual Design, Task 2--Laboratory Scale Evaluations, Task 3--OTM Development, Task 4--Economic Evaluation and Commercialization Planning and Task 5--Program Management. The program has experienced significant delays due to several factors. The budget has also been significantly under spent. Based on recent technical successes and confirmation of process economics, significant future progress is expected. Concepts for integrating Oxygen Transport Membranes (OTMs) into boilers and process heaters to facilitate oxy-fuel combustion have been investigated. OTM reactor combustion testing was delayed to insufficient reliability of the earlier OTM materials. Substantial improvements to reliability have been identified and testing will recommence early in 2004. Promising OTM material compositions and OTM architectures have been identified that improve the reliability of the ceramic elements. Economic evaluation continued. Information was acquired that quantified the attractiveness of the advanced oxygen-fired boiler. CO{sub 2} capture and compression are still estimated to be much less than $10/ton CO{sub 2}.

  15. Combustion air preheating for refinery heaters using plate-type heat exchangers

    SciTech Connect (OSTI)

    Dinulescu, M.

    1987-01-01T23:59:59.000Z

    Combustion air preheating by recovering heat from combustion gases is a cost effective method of increasing the overall thermal efficiency of the refining and petrochemical processes. This paper presents the advantages of the plate-type air preheaters made of smooth plates without extended surfaces. These exchangers provide a relatively high heat transfer coefficient at a relatively low pressure drop, resulting in a flexible and compact design. The air preheater design can easily be integrated into the heater design. Top mounting with natural draft becomes possible for many applications, eliminating the need for I.D. fan and expensive ductwork. The economical extent of heat recovery function of the fuel fired is presented based on practical experience. The use of porcelain enameled (glass coated) plates and of stainless steel materials allows the operation of the air preheater below the acidic and water dew point. Finally the paper presents the experience of the Canadian refineries and petrochemical plants with plate-type heat exchangers used for combustion air preheating.

  16. Economic Assessment of Electric-Drive Vehicle Operation in California and the United States

    E-Print Network [OSTI]

    Lidicker, Jeffrey R.; Lipman, Timothy E.; Shaheen, Susan A.

    2010-01-01T23:59:59.000Z

    ECONOMIC ASSESSMENT OF ELECTRIC-DRIVE VEHICLE OPERATION INECONOMIC ASSESSMENT OF ELECTRIC-DRIVE VEHICLE OPERATION INconsumers to switch to electric-drive vehicles, including a

  17. Optimal investment and scheduling of distributed energy resources with uncertainty in electric vehicles driving schedules

    E-Print Network [OSTI]

    Cardoso, Goncalo

    2014-01-01T23:59:59.000Z

    management of small electric energy systems including V2Gand renewable energy sources,” Electric Power Systemsof electric-drive vehicles with renewable energy,” Energy,

  18. Electric machine

    DOE Patents [OSTI]

    El-Refaie, Ayman Mohamed Fawzi (Niskayuna, NY); Reddy, Patel Bhageerath (Madison, WI)

    2012-07-17T23:59:59.000Z

    An interior permanent magnet electric machine is disclosed. The interior permanent magnet electric machine comprises a rotor comprising a plurality of radially placed magnets each having a proximal end and a distal end, wherein each magnet comprises a plurality of magnetic segments and at least one magnetic segment towards the distal end comprises a high resistivity magnetic material.

  19. --No Title--

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

    retrofits include window upgrades to double-pane, insulated, tempered glass to conserve electricity for heating and cooling; upgrading the water heater to an on-demand style;...

  20. Vehicle Technologies Office: AVTA - Plug-in Electric Vehicle...

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

    nation's vehicle fleet. VTO invested 400 million in 18 projects to demonstrate plug-in electric vehicles (PEVs, also known as electric cars) and infrastructure, including 10...

  1. California Appliance Efficiency Database for Consumers

    E-Print Network [OSTI]

    several products that use electricity or water, including: · Airconditioners,heaters)--the higher the SEER, the more efficient the air conditioner is. A water heater's energy factor determines its efficiency, so look for the water heater with the highest energy factor. Every type of product listed has its

  2. Device to facilitate moving an electrical cable of an electric vehicle charging station and method of providing the same

    DOE Patents [OSTI]

    Karner, Donald B

    2014-04-29T23:59:59.000Z

    Some embodiments include a device to facilitate moving an electrical cable of an electric vehicle charging station. Other embodiments of related systems and methods are also disclosed.

  3. Sixth Northwest Conservation and Electric Power Plan Appendix K: The Smart Grid

    E-Print Network [OSTI]

    .................................................................................................... 6 Water Heaters for Peak Load, Load Following, and Energy Storage......................................... 6 Controlling Water Heaters to Meet Peak Load....................................................................... 6 Controlling Water Heaters to Provide Regulation or Load Following

  4. Electric power monthly, May 1996

    SciTech Connect (OSTI)

    NONE

    1996-05-01T23:59:59.000Z

    This publication presents monthly electricity statistics for a wide audience including Congress, Federal and Stage agencies, the electric utility industry, and the general public. Purpose is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. EIA collected the information to fulfill its data collection and dissemination responsibilities in Federal Energy Administration Act of 1974 (Public Law 93-275) as amended.

  5. Electric Power monthly, November 1996

    SciTech Connect (OSTI)

    NONE

    1996-11-01T23:59:59.000Z

    This publication presents monthly electricity statistics for a wide audience including Congress, Federal and state agencies, the electric utility industry, and the general public. Purpose is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. EIA collected the information in this report to fulfill its data collection and dissemination responsibilities as specified in the Federal Energy Administration Act of 1974 (Public Law 93-275) as amended.

  6. ELECTRICAL AND PLUMBING CHECKLIST

    E-Print Network [OSTI]

    Peters, Richard

    into walls, floors and ceilings. Digging in the garden. Conversion of under-roof spaces to storage lofts a batten holder with a new light fitting. Repairing an appliance such as a heater. Altering the location THAT: Any work that directly interacts with the installation of the drinking water system or the sewer

  7. Engineering Electrical &

    E-Print Network [OSTI]

    Hickman, Mark

    Computer Engineering Electrical & Electronic Engineering Mechatronics Engineering Mechanical Engineering Civil Engineering Natural Resources Engineering Forest Engineering Chemical & Process Engineering ELECTIVE 2 Required Engineering Intermediate Year 2011 Eight Required Courses Chart: 120 points College

  8. Engineering Electrical &

    E-Print Network [OSTI]

    Hickman, Mark

    Computer Engineering Electrical & Electronic Engineering Mechatronics Engineering Mechanical Engineering Civil Engineering Natural Resources Engineering Forest Engineering Chemical & Process Engineering ELECTIVE 2 Required Engineering Intermediate Year 2012 Eight Required Courses Chart: 120 points College

  9. Sponsorship includes: Agriculture in the

    E-Print Network [OSTI]

    Nebraska-Lincoln, University of

    Sponsorship includes: · Agriculture in the Classroom · Douglas County Farm Bureau · Gifford Farm · University of Nebraska Agricultural Research and Development Center · University of Nebraska- Lincoln Awareness Coalition is to help youth, primarily from urban communities, become aware of agriculture

  10. Quality electric motor repair: A guidebook for electric utilities

    SciTech Connect (OSTI)

    Schueler, V.; Douglass, J.

    1995-08-01T23:59:59.000Z

    This guidebook provides utilities with a resource for better understanding and developing their roles in relation to electric motor repair shops and the industrial and commercial utility customers that use them. The guidebook includes information and tools that utilities can use to raise the quality of electric motor repair practices in their service territories.

  11. Electric sales and revenue: 1993

    SciTech Connect (OSTI)

    Not Available

    1995-01-01T23:59:59.000Z

    The Electric Sales and Revenue is prepared by the Survey Management Division, Office of Coal, Nuclear, Electric and Alternate Fuels; Energy Information Administration (EIA); US Department of Energy. This publication provides information about sales of electricity, its associated revenue, and the average revenue per kilowatthour sold to residential, commercial, industrial, and other consumers throughout the United States. The sales, revenue, and average revenue per kilowatthour data provided in the Electric Sales and Revenue are based on annual data reported by electric utilities for the calendar year ending December 31, 1993. Operating revenue includes energy charges, demand charges, consumer service charges, environmental surcharges, fuel adjustments, and other miscellaneous charges. The revenue does not include taxes, such as sales and excise taxes, that are assessed on the consumer and collected through the utility. Average revenue per kilowatthour is defined as the cost per unit of electricity sold and is calculated by dividing retail sales into the associated electric revenue. Because electric rates vary based on energy usage, average revenue per kilowatthour are affected by changes in the volume of sales. The sales of electricity, associated revenue, and average revenue per kilowatthour data provided in this report are presented at the national, Census division, State, and electric utility levels.

  12. China Energy and Emissions Paths to 2030

    E-Print Network [OSTI]

    Fridley, David

    2012-01-01T23:59:59.000Z

    of electric and gas water heaters, both of which areMEPS revisions. For gas water heaters, the energy factor islevel. For electric water heaters, continued efficiency

  13. 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

  14. Powertrain system for a hybrid electric vehicle

    DOE Patents [OSTI]

    Reed, R.G. Jr.; Boberg, E.S.; Lawrie, R.E.; Castaing, F.J.

    1999-08-31T23:59:59.000Z

    A hybrid electric powertrain system is provided including an electric motor/generator drivingly engaged with the drive shaft of a transmission. The electric is utilized for synchronizing the rotation of the drive shaft with the driven shaft during gear shift operations. In addition, a mild hybrid concept is provided which utilizes a smaller electric motor than typical hybrid powertrain systems. Because the electric motor is drivingly engaged with the drive shaft of the transmission, the electric motor/generator is driven at high speed even when the vehicle speed is low so that the electric motor/generator provides more efficient regeneration. 34 figs.

  15. Powertrain system for a hybrid electric vehicle

    DOE Patents [OSTI]

    Reed, Jr., Richard G. (Royal Oak, MI); Boberg, Evan S. (Hazel Park, MI); Lawrie, Robert E. (Whitmore Lake, MI); Castaing, Francois J. (Bloomfield Township, MI)

    1999-08-31T23:59:59.000Z

    A hybrid electric powertrain system is provided including an electric motor/generator drivingly engaged with the drive shaft of a transmission. The electric is utilized for synchronizing the rotation of the drive shaft with the driven shaft during gear shift operations. In addition, a mild hybrid concept is provided which utilizes a smaller electric motor than typical hybrid powertrain systems. Because the electric motor is drivingly engaged with the drive shaft of the transmission, the electric motor/generator is driven at high speed even when the vehicle speed is low so that the electric motor/generator provides more efficient regeneration.

  16. Electrical system for a motor vehicle

    DOE Patents [OSTI]

    Tamor, M.A.

    1999-07-20T23:59:59.000Z

    In one embodiment of the present invention, an electrical system for a motor vehicle comprises a capacitor, an engine cranking motor coupled to receive motive power from the capacitor, a storage battery and an electrical generator having an electrical power output, the output coupled to provide electrical energy to the capacitor and to the storage battery. The electrical system also includes a resistor which limits current flow from the battery to the engine cranking motor. The electrical system further includes a diode which allows current flow through the diode from the generator to the battery but which blocks current flow through the diode from the battery to the cranking motor. 2 figs.

  17. Electrical system for a motor vehicle

    DOE Patents [OSTI]

    Tamor, Michael Alan (Toledo, OH)

    1999-01-01T23:59:59.000Z

    In one embodiment of the present invention, an electrical system for a motor vehicle comprises a capacitor, an engine cranking motor coupled to receive motive power from the capacitor, a storage battery and an electrical generator having an electrical power output, the output coupled to provide electrical energy to the capacitor and to the storage battery. The electrical system also includes a resistor which limits current flow from the battery to the engine cranking motor. The electrical system further includes a diode which allows current flow through the diode from the generator to the battery but which blocks current flow through the diode from the battery to the cranking motor.

  18. INTRODUCTION Ukiah Electric Utility

    E-Print Network [OSTI]

    INTRODUCTION Ukiah Electric Utility Renewable Energy Resources Procurement Plan Per Senate Billlx 2 renewable energy resources, including renewable energy credits, as a specified percentage of Ukiah's total,2011 to December 31, 2013, Ukiah shall procure renewable energy resources equivalent to an average of at least

  19. Writing Motor Specifications - How to Include Efficiency

    E-Print Network [OSTI]

    Quartermaine, B. J.

    1980-01-01T23:59:59.000Z

    The escalating cost of electric power coupled with the rapid depletion of our non-renewable resources makes consideration of motor efficiency good sense both from economic and conservation viewpoints. The efficiency of an electric motor can...

  20. Electrical appliance energy consumption control methods and electrical energy consumption systems

    DOE Patents [OSTI]

    Donnelly, Matthew K. (Kennewick, WA); Chassin, David P. (Pasco, WA); Dagle, Jeffery E. (Richland, WA); Kintner-Meyer, Michael (Richland, WA); Winiarski, David W. (Kennewick, WA); Pratt, Robert G. (Kennewick, WA); Boberly-Bartis, Anne Marie (Alexandria, VA)

    2008-09-02T23:59:59.000Z

    Electrical appliance energy consumption control methods and electrical energy consumption systems are described. In one aspect, an electrical appliance energy consumption control method includes providing an electrical appliance coupled with a power distribution system, receiving electrical energy within the appliance from the power distribution system, consuming the received electrical energy using a plurality of loads of the appliance, monitoring electrical energy of the power distribution system, and adjusting an amount of consumption of the received electrical energy via one of the loads of the appliance from an initial level of consumption to an other level of consumption different than the initial level of consumption responsive to the monitoring.

  1. Electrical appliance energy consumption control methods and electrical energy consumption systems

    DOE Patents [OSTI]

    Donnelly, Matthew K. (Kennewick, WA); Chassin, David P. (Pasco, WA); Dagle, Jeffery E. (Richland, WA); Kintner-Meyer, Michael (Richland, WA); Winiarski, David W. (Kennewick, WA); Pratt, Robert G. (Kennewick, WA); Boberly-Bartis, Anne Marie (Alexandria, VA)

    2006-03-07T23:59:59.000Z

    Electrical appliance energy consumption control methods and electrical energy consumption systems are described. In one aspect, an electrical appliance energy consumption control method includes providing an electrical appliance coupled with a power distribution system, receiving electrical energy within the appliance from the power distribution system, consuming the received electrical energy using a plurality of loads of the appliance, monitoring electrical energy of the power distribution system, and adjusting an amount of consumption of the received electrical energy via one of the loads of the appliance from an initial level of consumption to an other level of consumption different than the initial level of consumption responsive to the monitoring.

  2. Energy Efficiency Design Options for Residential Water Heaters: Economic Impacts on Consumers

    E-Print Network [OSTI]

    Lekov, Alex

    2011-01-01T23:59:59.000Z

    this indirect increase in home heating (and the decrease inincrease the home’s heating load in the heating season (electricity (42% of homes) for water heating. (DOE EIA 2005)

  3. Nozzle for electric dispersion reactor

    DOE Patents [OSTI]

    Sisson, W.G.; Basaran, O.A.; Harris, M.T.

    1995-11-07T23:59:59.000Z

    A nozzle for an electric dispersion reactor includes two concentric electrodes, the inner one of the two delivering disperse phase fluid into a continuous phase fluid. A potential difference generated by a voltage source creates a dispersing electric field at the end of the inner electrode. 4 figs.

  4. Nozzle for electric dispersion reactor

    DOE Patents [OSTI]

    Sisson, W.G.; Harris, M.T.; Scott, T.C.; Basaran, O.A.

    1998-06-02T23:59:59.000Z

    A nozzle for an electric dispersion reactor includes two coaxial cylindrical bodies, the inner one of the two delivering disperse phase fluid into a continuous phase fluid. A potential difference generated by a voltage source creates a dispersing electric field at the end of the inner electrode. 5 figs.

  5. Nozzle for electric dispersion reactor

    DOE Patents [OSTI]

    Sisson, W.G.; Harris, M.T.; Scott, T.C.; Basaran, O.A.

    1996-04-02T23:59:59.000Z

    A nozzle for an electric dispersion reactor includes two coaxial cylindrical bodies, the inner one of the two delivering disperse phase fluid into a continuous phase fluid. A potential difference generated by a voltage source creates a dispersing electric field at the end of the inner electrode. 5 figs.

  6. Nozzle for electric dispersion reactor

    DOE Patents [OSTI]

    Sisson, W.G.; Basaran, O.A.; Harris, M.T.

    1998-04-14T23:59:59.000Z

    A nozzle for an electric dispersion reactor includes two concentric electrodes, the inner one of the two delivering disperse phase fluid into a continuous phase fluid. A potential difference generated by a voltage source creates a dispersing electric field at the end of the inner electrode. 4 figs.

  7. Nozzle for electric dispersion reactor

    DOE Patents [OSTI]

    Sisson, Warren G. (Oak Ridge, TN); Basaran, Osman A. (Oak Ridge, TN); Harris, Michael T. (Knoxville, TN)

    1995-01-01T23:59:59.000Z

    A nozzle for an electric dispersion reactor includes two concentric electrodes, the inner one of the two delivering disperse phase fluid into a continuous phase fluid. A potential difference generated by a voltage source creates a dispersing electric field at the end of the inner electrode.

  8. Nozzle for electric dispersion reactor

    DOE Patents [OSTI]

    Sisson, Warren G. (Oak Ridge, TN); Harris, Michael T. (Knoxville, TN); Scott, Timothy C. (Knoxville, TN); Basaran, Osman A. (Oak Ridge, TN)

    1998-01-01T23:59:59.000Z

    A nozzle for an electric dispersion reactor includes two coaxial cylindrical bodies, the inner one of the two delivering disperse phase fluid into a continuous phase fluid. A potential difference generated by a voltage source creates a dispersing electric field at the end of the inner electrode.

  9. Nozzle for electric dispersion reactor

    DOE Patents [OSTI]

    Sisson, Warren G. (Oak Ridge, TN); Basaran, Osman A. (Oak Ridge, TN); Harris, Michael T. (Knoxville, TN)

    1998-01-01T23:59:59.000Z

    A nozzle for an electric dispersion reactor includes two concentric electrodes, the inner one of the two delivering disperse phase fluid into a continuous phase fluid. A potential difference generated by a voltage source creates a dispersing electric field at the end of the inner electrode.

  10. Nozzle for electric dispersion reactor

    DOE Patents [OSTI]

    Sisson, Warren G. (Oak Ridge, TN); Harris, Michael T. (Knoxville, TN); Scott, Timothy C. (Knoxville, TN); Basaran, Osman A. (Oak Ridge, TN)

    1996-01-01T23:59:59.000Z

    A nozzle for an electric dispersion reactor includes two coaxial cylindrical bodies, the inner one of the two delivering disperse phase fluid into a continuous phase fluid. A potential difference generated by a voltage source creates a dispersing electric field at the end of the inner electrode.

  11. Electric and Gasoline Vehicle Lifecycle Cost and Energy-Use Model

    E-Print Network [OSTI]

    Delucchi, Mark; Burke, Andy; Lipman, Timothy; Miller, Marshall

    2000-01-01T23:59:59.000Z

    = the efficiency of the propane space heater (BTU-delivered/the efficiency of the heater, and the cost of propane. The

  12. Electric power monthly, August 1994

    SciTech Connect (OSTI)

    Not Available

    1994-08-24T23:59:59.000Z

    The Electric Power Monthly (EPM) presents monthly electricity statistics. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. Data in this report are presented for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The EIA collected the information in this report to fulfill its data collection and dissemination responsibilities as specified in the Federal Energy Administration Act of 1974 (Public Law 93-275) as amended.

  13. Electric power monthly, July 1993

    SciTech Connect (OSTI)

    Not Available

    1993-07-29T23:59:59.000Z

    The Electric Power Monthly (EPM) presents monthly electricity statistics. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. Data in this report are presented for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The EIA collected the information in this report to fulfill its data collection and dissemination responsibilities as specified in the Federal Energy Administration Act of 1974 (Public Law 93-275) as amended.

  14. Electric power monthly, June 1994

    SciTech Connect (OSTI)

    Not Available

    1994-06-01T23:59:59.000Z

    The Electric Power Monthly (EPM) presents monthly electricity statistics. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. Data in this report are presented for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. The EIA collected the information in this report to fulfill its data collection and dissemination responsibilities as specified in the Federal Energy Administration Act of 1974 (Public Law 93-275) as amended.

  15. Overlap zoned electrically heated particulate filter

    DOE Patents [OSTI]

    Gonze, Eugene V [Pinckney, MI; Chapman, Mark R [Brighton, MI

    2011-07-19T23:59:59.000Z

    A system includes a particulate matter (PM) filter that includes an upstream end for receiving exhaust gas and a downstream end. A zoned heater is arranged spaced from the upstream end and comprises N zones, where N is an integer greater than one, wherein each of the N zones comprises M sub-zones, where M is an integer greater than or equal to one, and wherein the N zones and the M sub-zones are arranged in P layers, where P is an integer greater than one. A control module selectively activates at least a selected one of the N zones to initiate regeneration in downstream portions of the PM filter from the one of the N zones and deactivates non-selected ones of the N zones.

  16. 2014-10-14 Issuance: Test Procedures and Energy Conservation Standards for Residential Solar Water Heaters; Request for Information

    Broader source: Energy.gov [DOE]

    This document is a pre-publication Federal Register request for information regarding test procedures and energy conservation standards for residential solar water heaters, as issued by the Deputy Assistant Secretary for Energy Efficiency on October 14, 2014. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

  17. DRAFT DRAFT Electricity and Natural Gas Sector Description

    E-Print Network [OSTI]

    DRAFT DRAFT Electricity and Natural Gas Sector Description For Public Distribution AB 32 Scoping of electricity and natural gas; including electricity generation, combined heat and power, and electricity and natural gas end uses for residential and commercial purposes. Use of electricity and/or gas for industrial

  18. Electric power annual 1997. Volume 1

    SciTech Connect (OSTI)

    NONE

    1998-07-01T23:59:59.000Z

    The Electric Power Annual presents a summary of electric power industry statistics at national, regional, and State levels. The objective of the publication is to provide industry decisionmakers, government policy-makers, analysts, and the general public with data that may be used in understanding US electricity markets. The Electric Power Annual is prepared by the Electric Power Division; Office of Coal, Nuclear, Electric and Alternate Fuels; Energy Information Administration (EIA); US Department of Energy. Volume 1 -- with a focus on US electric utilities -- contains final 1997 data on net generation and fossil fuel consumption, stocks, receipts, and cost; preliminary 1997 data on generating unit capability, and retail sales of electricity, associated revenue, and the average revenue per kilowatthour of electricity sold (based on a monthly sample: Form EIA-826, ``Monthly Electric Utility Sales and Revenue Report with State Distributions``). Additionally, information on net generation from renewable energy sources and on the associated generating capability is included in Volume 1 of the EPA.

  19. Reliability and competitive electricity markets

    E-Print Network [OSTI]

    Joskow, Paul L.

    2004-01-01T23:59:59.000Z

    Despite all of the talk about ?deregulation? of the electricity sector, a large number of non-market mechanisms have been imposed on emerging competitive wholesale and retail markets. These mechanisms include spot market ...

  20. Electrical hazards

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed NewcatalystNeutronEnvironmentZIRKLEEFFECTS OFElaineElectric826Lab Electrical6,