National Library of Energy BETA

Sample records for water heating electric

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

    Office of Energy Efficiency and Renewable Energy (EERE)

    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...

  2. Valley Electric Association- Solar Water Heating Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Valley Electric Association (VEA), a nonprofit member owned cooperative, developed the domestic solar water heating program to encourage energy efficiency at the request of the membership. VEA...

  3. Lakeland Electric- Solar Water Heating Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Lakeland Electric, a municipal utility in Florida, offers solar-heated domestic hot water on a "pay-for-energy" basis. The utility bills the customer $34.95 per month regardless of use. The $34.95...

  4. Ashland Electric Utility - Bright Way to Heat Water Loan | Department...

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

    Type Loan Program Summary The City of Ashland Conservation Division offers a solar water heating program to residential electric customers who currently use an electric...

  5. Ashland Electric Utility - Bright Way to Heat Water Rebate |...

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

    average 800 to 1,000) Summary The City of Ashland Conservation Division offers a solar water heating program to its residential electric customers who currently use an electric...

  6. Waste heat from kitchen cuts hot water electricity 23%

    SciTech Connect (OSTI)

    Barber, J.

    1984-05-21

    Heat recovered from the Hamburger Hamlet's kitchen in Bethesada, Maryland and used to pre-heat the million gallons of hot water used annually reduced hot water costs 23% and paid off the investment in 1.5 years. Potomac Electric initiated the installation of an air-to-water heat pump in the restaurant kitchen above the dishwasher at a cost of about $5300, with the restaurant obliged to reimburse the utility if performance was satisfactory. Outside water recirculates through storage tanks and the ceiling heat pump until it reaches the required 140/sup 0/F. The amount of electricity needed to bring the preheated water to that temperature was $3770 lower after the installation. Cooled air exhausted from the heat pump circulates throughout the kitchen.

  7. Max Tech Electric Heat Pump Water Heater with Lower GWP Halogenated...

    Energy Savers [EERE]

    Max Tech Electric Heat Pump Water Heater with Lower GWP Halogenated Refrigerant Max Tech Electric Heat Pump Water Heater with Lower GWP Halogenated Refrigerant Information flow ...

  8. Max Tech Electric Heat Pump Water Heater with Lower GWP Halogenated

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

    Refrigerant | Department of Energy Max Tech Electric Heat Pump Water Heater with Lower GWP Halogenated Refrigerant Max Tech Electric Heat Pump Water Heater with Lower GWP Halogenated Refrigerant Information flow schematic for an integrated heat pump design model and wrapped tank model. Image credit: Oak Ridge National Laboratory. Information flow schematic for an integrated heat pump design model and wrapped tank model. Image credit: Oak Ridge National Laboratory. Information flow schematic

  9. Commercial CO2 Electric Heat Pump Water Heater | Department of Energy

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

    CO2 Electric Heat Pump Water Heater Commercial CO2 Electric Heat Pump Water Heater Planned enhanced modeling approach to facilitate analyses of wrapped-tank options for the project. Image credit: Oak Ridge National Laboratory. Planned enhanced modeling approach to facilitate analyses of wrapped-tank options for the project. Image credit: Oak Ridge National Laboratory. Lead Performer: Oak Ridge National Laboratory - Oak Ridge, TN FY16 DOE Funding: $150,000 Project Term: October 1, 2015 - TBD

  10. Heat Pump Water Heaters

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

    & Events Expand News & Events Skip navigation links Residential Residential Lighting Energy Star Appliances Consumer Electronics Heat Pump Water Heaters Electric Storage Water...

  11. Electric Storage Water Heaters

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

    & Events Expand News & Events Skip navigation links Residential Residential Lighting Energy Star Appliances Consumer Electronics Heat Pump Water Heaters Electric Storage Water...

  12. Promising Technology: Heat Pump Water Heaters

    Broader source: Energy.gov [DOE]

    A heat pump water heater uses electricity to transfer heat from the ambient air to stored water, as opposed to an electric resistance water heater, which uses electricity to generate the heat directly. This enables the heat pump water heater to be 2 to 3 times as efficient as an electric resistance water heater.

  13. CO2 Heat Pump Water Heater

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

    CO 2 Heat Pump Water Heater 2014 Building Technologies Office Peer Review Evaporator Kyle ... MarketAudience: Residential electric water heating Key Partners: GE Appliances CRADA ...

  14. Heat Pump Water Heaters | Department of Energy

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

    Heat Pump Water Heaters Heat Pump Water Heaters A diagram of a heat pump water heater. A diagram of a heat pump water heater. Most homeowners who have heat pumps use them to heat and cool their homes. But a heat pump also can be used to heat water -- either as stand-alone water heating system, or as combination water heating and space conditioning system. How They Work Heat pump water heaters use electricity to move heat from one place to another instead of generating heat directly. Therefore,

  15. Electric Resistance Heating Basics | Department of Energy

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

    Electric Resistance Heating Basics Electric Resistance Heating Basics August 16, 2013 - 3:10pm Addthis Electric resistance heat can be supplied by centralized forced-air electric furnaces or by heaters in each room. Electric resistance heating converts nearly all of the energy in the electricity to heat. Types of Electric Resistance Heaters Electric resistance heat can be provided by electric baseboard heaters, electric wall heaters, electric radiant heat, electric space heaters, electric

  16. Total Space Heating Water Heating Cook-

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    Commercial Buildings Energy Consumption Survey: Energy End-Use Consumption Tables Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing...

  17. Total Space Heating Water Heating Cook-

    Gasoline and Diesel Fuel Update (EIA)

    Released: September, 2008 Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All Buildings* ... 1,870 1,276...

  18. Total Space Heating Water Heating Cook-

    Gasoline and Diesel Fuel Update (EIA)

    Energy Consumption Survey: Energy End-Use Consumption Tables Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All...

  19. Total Space Heating Water Heating Cook-

    Gasoline and Diesel Fuel Update (EIA)

    Released: September, 2008 Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All Buildings* ... 1,602 1,397...

  20. Total Space Heating Water Heating Cook-

    Gasoline and Diesel Fuel Update (EIA)

    Released: September, 2008 Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All Buildings ... 2,037...

  1. Sodium heat engine electrical feedthrough

    DOE Patents [OSTI]

    Weber, Neill

    1985-01-01

    A thermoelectric generator device which converts heat energy to electrical energy. An alkali metal is used with a solid electrolyte and a hermetically sealed feedthrough structure.

  2. Water-heating dehumidifier

    DOE Patents [OSTI]

    Tomlinson, John J.

    2006-04-18

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

  3. Buildings","All Buildings with Water Heating","Water-Heating...

    U.S. Energy Information Administration (EIA) Indexed Site

    5. Water-Heating Energy Sources, Number of Buildings, 1999" ,"Number of Buildings (thousand)" ,"All Buildings","All Buildings with Water Heating","Water-Heating Energy Sources Used ...

  4. Electric Resistance Heating | Department of Energy

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

    about 30% of the fuel's energy into electricity. Because of electricity generation and transmission losses, electric heat is often more expensive than heat produced in homes or...

  5. Electric Resistance Heating | Department of Energy

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

    Electric Resistance Heating Electric Resistance Heating Baseboard heaters are one type of electric resistance heaters. | Photo courtesy of iStockphotodrewhadley...

  6. Water Heating | Department of Energy

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

    Public Services Homes Water Heating Water Heating Infographic: Water Heaters 101 Infographic: Water Heaters 101 Everything you need to know about saving money on water...

  7. Total Space Heating Water Heating Cook-

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    Tables Total Space Heating Water Heating Cook- ing Other Total Space Heating Water Heating Cook- ing Other All Buildings* ... 634 578 46 1 Q 116.4 106.3...

  8. Electric Resistance Heating | Department of Energy

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

    Heat & Cool » Home Heating Systems » Electric Resistance Heating Electric Resistance Heating Baseboard heaters are one type of electric resistance heaters. | Photo courtesy of ©iStockphoto/drewhadley Baseboard heaters are one type of electric resistance heaters. | Photo courtesy of ©iStockphoto/drewhadley Electric resistance heating is 100% energy efficient in the sense that all the incoming electric energy is converted to heat. However, most electricity is produced from coal, gas, or

  9. Electric Adsorption Heat Pump for Electric Vehicles: Electric-Powered Adsorption Heat Pump for Electric Vehicles

    SciTech Connect (OSTI)

    2011-11-21

    HEATS Project: PNNL is developing a new class of advanced nanomaterial called an electrical metal organic framework (EMOF) for EV heating and cooling systems. The EMOF would function similar to a conventional heat pump, which circulates heat or cold to the cabin as needed. However, by directly controlling the EMOF's properties with electricity, the PNNL design is expected to use much less energy than traditional heating and cooling systems. The EMOF-based heat pumps would be light, compact, efficient, and run using virtually no moving parts.

  10. Sodium heat engine electrical feedthrough

    DOE Patents [OSTI]

    Weber, N.

    1985-03-19

    A thermoelectric generator device which converts heat energy to electrical energy is disclosed. An alkali metal is used with a solid electrolyte and a hermetically sealed feedthrough structure. 4 figs.

  11. Salem Electric- Solar Water Heater Rebate

    Office of Energy Efficiency and Renewable Energy (EERE)

    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...

  12. EWEB- Residential Solar Water Heating Loan Program

    Broader source: Energy.gov [DOE]

    Eugene Water & Electric Board (EWEB) offers residential customers a loan and cash discount program called, "The Bright Way To Heat Water." The program is designed to promote the installation of...

  13. Water Heating | Department of Energy

    Energy Savers [EERE]

    Water Heating Water Heating September 2, 2015 - 11:07am Addthis Low-flow fixtures will help you reduce your hot water use and save money on your water heating bills. | Photo...

  14. The utilization of excess wind-electric power from stock water pumping systems to heat a sector of the stock tank

    SciTech Connect (OSTI)

    Nydahl, J.E.; Carlson, B.O.

    1996-12-31

    On the high plains, a wind-electric stock water pumping system produces a significant amount of excess power over the winter months due to intense winds and the decreased water consumption by cattle. The University of Wyoming is developing a multi-tasking system to utilize this excess energy to resistively heat a small sector of the stock tank at its demonstration/experimental site. This paper outlines the detailed heat transfer analysis that predicted drinking water temperature and icing conditions. It also outlines the optimization criteria and the power produced by the Bergey 1500 wind electric system. Results show that heating a smaller insulated tank inserted into the larger tank would raise the drinking water temperature by a maximum of 6.7 {degrees}C and eliminate icing conditions. The returns associated with the additional cattle weight gain, as a result of the consumption of warmer water, showed that system modification costs would be recovered the first year. 12 refs., 11 figs., 2 tabs.

  15. Water Heating | Department of Energy

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

    Water Heating Water Heating Infographic: Water Heaters 101 Infographic: Water Heaters 101 Everything you need to know about saving money on water heating costs. Read more Selecting a New Water Heater Selecting a New Water Heater Tankless? Storage? Solar? Save money on your water heating bill by choosing the right type of energy-efficient water heater for your needs. Read more Sizing a New Water Heater Sizing a New Water Heater When buying a new water heater, bigger is not always better. Learn

  16. Water Heating | Department of Energy

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

    Water Heating Water Heating Low-flow fixtures will help you reduce your hot water use and save money on your water heating bills. | Photo courtesy of Huntington Veterans Medical Ctr. Low-flow fixtures will help you reduce your hot water use and save money on your water heating bills. | Photo courtesy of Huntington Veterans Medical Ctr. Water heating accounts for about 18% of your home's energy use. Reducing your hot water use, employing energy-saving strategies, and choosing an energy efficient

  17. Impacts of Water Quality on Residential Water Heating Equipment

    SciTech Connect (OSTI)

    Widder, Sarah H.; Baechler, Michael C.

    2013-11-01

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

  18. Water Heating Projects | Department of Energy

    Office of Environmental Management (EM)

    HVAC, Water Heating, & Appliances Water Heating Projects Water Heating Projects Figure 1: The system model for the combined Water heater, dehumidifier and cooler (WHDC). A ...

  19. Heat Exchangers for Solar Water Heating Systems | Department...

    Energy Savers [EERE]

    Heat Exchangers for Solar Water Heating Systems Heat Exchangers for Solar Water Heating Systems Image of a heat exchanger. | Photo from iStockphoto.com Image of a heat exchanger. |...

  20. Central Multifamily Water Heating Systems

    Broader source: Energy.gov [DOE]

    The Building America Program is hosting a no-cost, webinar-based training on Central Multifamily Water Heating Systems. The webinar will focus the effective use of central heat pump water heaters...

  1. Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound...

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

    More Documents & Publications Diesel Engine Waste Heat Recovery Utilizing Electric Trubocompound Technology Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound ...

  2. Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound...

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

    More Documents & Publications Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound Technology Diesel Engine Waste Heat Recovery Utilizing Electric Trubocompound ...

  3. Diesel Engine Waste Heat Recovery Utilizing Electric Trubocompound...

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

    More Documents & Publications Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound Technology Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound ...

  4. Research & Development Roadmap: Emerging Water Heating Technologies...

    Office of Environmental Management (EM)

    Water Heating Technologies Research & Development Roadmap: Emerging Water Heating Technologies The Research and Development (R&D) Roadmap for Emerging Water Heating Technologies ...

  5. Water Heating Standing Technical Committee Presentation | Department...

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

    Water Heating Standing Technical Committee Presentation Water Heating Standing Technical Committee Presentation This presentation outlines the goals of the Water Heating Standing...

  6. Portland General Electric- Heat Pump Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Portland General Electric's (PGE) Heat Pump Rebate Program offers residential customers a $200 rebate for an energy-efficient heat pump installed to PGE’s standards by a PGE-approved contractor....

  7. Heat Exchangers for Solar Water Heating Systems | Department of Energy

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

    Exchangers for Solar Water Heating Systems Heat Exchangers for Solar Water Heating Systems Image of a heat exchanger. | Photo from iStockphoto.com Image of a heat exchanger. | Photo from iStockphoto.com Solar water heating systems use heat exchangers to transfer solar energy absorbed in solar collectors to the liquid or air used to heat water or a space. Heat exchangers can be made of steel, copper, bronze, stainless steel, aluminum, or cast iron. Solar heating systems usually use copper,

  8. Solar Water Heating: SPECIFICATION, CHECKLIST AND GUIDE

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

    Water Heating SPECIFICATION, CHECKLIST AND GUIDE Renewable Energy Ready Home Table of ... Assumptions of the RERH Solar Water Heating Specification ...

  9. Zone heated diesel particulate filter electrical connection

    DOE Patents [OSTI]

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

    2010-03-30

    An electrical connection system for a particulate filter is provided. The system includes: a particulate filter (PF) disposed within an outer shell wherein the PF is segmented into a plurality of heating zones; an outer mat disposed between the particulate filter and the outer shell; an electrical connector coupled to the outer shell of the PF; and a plurality of printed circuit connections that extend along the outer surface of the PF from the electrical connector to the plurality of heating zones.

  10. Tips: Water Heating | Department of Energy

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

    Water Heating Tips: Water Heating Keep your energy bills out of hot water. Insulate your water heater to save ... Drain-water, or greywater, heat recovery systems capture the energy ...

  11. Electrical assembly having heat sink protrusions

    SciTech Connect (OSTI)

    Rinehart, Lawrence E.; Romero, Guillermo L.

    2009-04-21

    An electrical assembly, comprising a heat producing semiconductor device supported on a first major surface of a direct bond metal substrate that has a set of heat sink protrusions supported by its second major surface. In one preferred embodiment the heat sink protrusions are made of the same metal as is used in the direct bond copper.

  12. Heat Transfer Fluids for Solar Water Heating Systems | Department...

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

    Illustration of a solar water heater. Illustration of a solar water heater. Heat-transfer fluids carry heat through solar collectors and a heat exchanger to the heat storage tanks...

  13. Water Heating | Department of Energy

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

    Low-flow fixtures will help you reduce your hot water use and save money on your water heating bills. | Photo courtesy of Huntington Veterans Medical Ctr. Low-flow fixtures will...

  14. Solar water heating panel

    SciTech Connect (OSTI)

    Burke, B.G.

    1984-10-02

    The present invention discloses a solar water heating panel and method of constructing such a solar panel from a pair of thin sheets bonded together around their peripheral edges and having at least one of the sheets formed with resiliently flexible areas defined by a plurality of abutting concave hexagonal areas or zones. The center of each hexagonal zone is formed as a dimple, concave with respect to the opposite sheet, whose radius of curvature is greater than the radius of an inscribed circle within said zone. The abutting zones between each hexagonal zone are formed convex relative to the opposite sheet and have a radius less than that of an inscribed circle. In a preferred form, the sheets are joined together at the center of alternate spaced-apart hexagonal areas. In this way, except for the centers bonded near the panel edges, each joined hexagonal center is surrounded by six unjoined areas to form both transverse and longitudinal flow passages through the panel.

  15. electricity use to lift water

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

    ... Laboratories Social Twitter Google + Vimeo GovDelivery SlideShare SunShot Grand Challenge: Regional Test Centers electricity use to lift water HomeTag:electricity use to lift

  16. electricity use to treat water

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

    ... Laboratories Social Twitter Google + Vimeo GovDelivery SlideShare SunShot Grand Challenge: Regional Test Centers electricity use to treat water HomeTag:electricity use to treat

  17. electricity use to convey water

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

    ... Laboratories Social Twitter Google + Vimeo GovDelivery SlideShare SunShot Grand Challenge: Regional Test Centers electricity use to convey water HomeTag:electricity use to convey

  18. Technology Solutions Case Study: Heat Pump Water Heater Retrofit

    SciTech Connect (OSTI)

    none,

    2012-08-01

    In this project, Pacific Northwest National Laboratory studied heat pump water heaters, an efficient, cost-effective alternative to traditional electric resistance water heaters that can improve energy efficiency by up to 62%.

  19. Water Heating Basics | Department of Energy

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

    Water Heating Basics Water Heating Basics August 19, 2013 - 11:15am Addthis A variety of systems are available for water heating in homes and buildings. Learn about: Conventional Storage Water Heaters Demand (Tankless or Instantaneous) Water Heaters Heat Pump Water Heaters Solar Water Heaters Tankless Coil and Indirect Water Heaters Addthis Related Articles Tankless Demand Water Heater Basics Solar Water Heater Basics Heat Pump Water Heater Basics Energy Basics Home Renewable Energy Homes &

  20. Electrically heated DPF start-up strategy

    SciTech Connect (OSTI)

    Gonze, Eugene V; Ament, Frank

    2012-04-10

    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.

  1. Edmond Electric- Residential Heat Pump Rebate Program

    Broader source: Energy.gov [DOE]

    Edmond Electric offers rebates to residential customers who install energy-efficient heat pumps. This program applies to installations in both new and existing residential homes and complexes. Air...

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

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

    Hot New Advances in Water Heating Technology Hot New Advances in Water Heating Technology April 18, 2013 - 1:15pm Addthis Learn how a cooperative R&D agreement with the Energy Department's Oak Ridge National Laboratory helped contributed to the success of GE's GeoSpring Hybrid Water Heater -- one of the most efficient electric heat pump water heaters on the market today. Rebecca Matulka Rebecca Matulka Former Digital Communications Specialist, Office of Public Affairs Got Energy Efficiency

  3. Thermoelectric Conversion of Waste Heat to Electricity in an...

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

    MB) More Documents & Publications Thermoelectric Conversion of Waste Heat to Electricity in an IC Engine Powered Vehicle Thermoelectric Conversion of Waste Heat to Electricity ...

  4. Thermoelectric Conversion of Waste Heat to Electricity in an...

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

    Waste Heat to Electricity in an IC Engine-Powered Vehicle Thermoelectric Conversion of Waste Heat to Electricity in an IC Engine Powered Vehicle Thermoelectric Conversion of Wate

  5. Thermoelectrici Conversion of Waste Heat to Electricity in an...

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

    More Documents & Publications Thermoelectric Conversion of Waste Heat to Electricity in an IC Engine Powered Vehicle Thermoelectric Conversion of Waste Heat to Electricity in an IC ...

  6. Electrically heated particulate filter with zoned exhaust flow...

    Office of Scientific and Technical Information (OSTI)

    Electrically heated particulate filter with zoned exhaust flow control Title: Electrically heated particulate filter with zoned exhaust flow control A system includes a particulate ...

  7. Harvesting Electricity From Wasted Heat

    SciTech Connect (OSTI)

    Schwede, Jared

    2014-06-30

    Scientists as SLAC National Laboratory explain the concept, Photon Enhanced Thermionic Emission (PETE), and how this process can capture more energy from photovoltaic panels by harnessing heat energy from sunlight.

  8. Harvesting Electricity From Wasted Heat

    ScienceCinema (OSTI)

    Schwede, Jared

    2014-07-16

    Scientists as SLAC National Laboratory explain the concept, Photon Enhanced Thermionic Emission (PETE), and how this process can capture more energy from photovoltaic panels by harnessing heat energy from sunlight.

  9. Indoor unit for electric heat pump

    DOE Patents [OSTI]

    Draper, R.; Lackey, R.S.; Fagan, T.J. Jr.; Veyo, S.E.; Humphrey, J.R.

    1984-05-22

    An indoor unit for an electric heat pump is provided in modular form including a refrigeration module, an air mover module, and a resistance heat package module, the refrigeration module including all of the indoor refrigerant circuit components including the compressor in a space adjacent the heat exchanger, the modules being adapted to be connected to air flow communication in several different ways as shown to accommodate placement of the unit in various orientations. 9 figs.

  10. Power supply system for heat and electricity

    SciTech Connect (OSTI)

    Hafner, G.; Finger, H.; Lenz, H.

    1985-03-05

    A power supply system for generating at least one of heat and electricity which includes a number of statically and functionally independent units adapted to generate at least one of heat and electricity which enable a maximum utilization of primary energy. For decentralized power supply over short and low loss supply lines the individual units are constructed as stackable modules. By exchanging or adding one or more modules, it is possible to adapt the flexibility of the power supply system to changes in demand for the energy thereby providing a practical approach to the utilization of waste heat for energy conservation purposes.

  11. Cost Effective Water Heating Solutions

    Broader source: Energy.gov [DOE]

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

  12. Tips: Water Heating | Department of Energy

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

    Water Heating Tips: Water Heating Keep your energy bills out of hot water. Insulate your water heater to save energy and money, or choose an on-demand hot water heater to save even ...

  13. Heat Pump Water Heaters | Department of Energy

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

    A diagram of a heat pump water heater. A diagram of a heat pump water heater. What does this mean for me? Heat pump water heaters can be two to three times more energy efficient...

  14. Energy Saver 101: Water Heating Infographic

    Broader source: Energy.gov [DOE]

    Looking for ways to save money on water heating? Energy Saver 101: Water Heating infographic lays out evergything you need to know about water heating and shares ways to save energy and money.

  15. Solar Water Heat | Open Energy Information

    Open Energy Info (EERE)

    Water Heat Jump to: navigation, search TODO: Add description List of Solar Water Heat Incentives Retrieved from "http:en.openei.orgwindex.php?titleSolarWaterHeat&oldid26719...

  16. Savings Project: Lower Water Heating Temperature | Department...

    Energy Savers [EERE]

    Lower Water Heating Temperature Savings Project: Lower Water Heating Temperature Addthis Project Level Easy Energy Savings 12-30 annually for each 10F reduction Time to ...

  17. Water Heating Standing Technical Committee Presentation

    Energy Savers [EERE]

    Water Heating Residential Energy Efficiency Stakeholder's Meeting February 29, 2012 - Austin, Texas 2 STC Chairman Responsibilities * To maintain the Water Heating Strategic ...

  18. Commercial Absorption Heat Pump Water Heater

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

    Absorption Heat Pump Water Heater 2016 Building Technologies Office Peer Review Patrick ... The target market is the hospital, hotel and full service restaurant gas hot water heating ...

  19. Water Heating Standing Technical Committee Presentation | Department...

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

    Standing Technical Committee Presentation Water Heating Standing Technical Committee Presentation This presentation outlines the goals of the Water Heating Standing Technical ...

  20. HVAC, Water Heating, and Appliance Publications | Department...

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

    used in commercial buildings for cooking, cleaning, water heating, and other end-uses. ... September 25, 2014 Research & Development Roadmap: Emerging Water Heating Technologies The ...

  1. Retrofit Integrated Space & Water Heating: Field Assessment,...

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

    Retrofit Integrated Space and Water Heating: Field Assessment Minneapolis, Minnesota PROJECT INFORMATION Project Name: Retrofit Integrated Space and Water Heating: Field Assessment ...

  2. Field Monitoring Protocol: Heat Pump Water Heaters

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

    Field Monitoring Protocol: Heat Pump Water Heaters B. Sparn, L. Earle, D. Christensen, J. ... 2013 Field Monitoring Protocol: Heat Pump Water Heaters B. Sparn, L. Earle, D. ...

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

    Energy Savers [EERE]

    Multifamily Central Heat Pump Water Heating Building America Webinar: Central Multifamily Water Heating Systems - Multifamily Central Heat Pump Water Heating This presentation will ...

  4. Electric heat tracing designed to prevent icing

    SciTech Connect (OSTI)

    Lonsdale, J.T.; Norrby, T.

    1985-11-01

    Mobile offshore rigs designed for warmer climates are not capable of operating year-round in the arctic or near-arctic regions. Icing is but one major operational problem in these waters. The danger of instability due to ice loading exists on an oil rig as well as on a ship. From a safety standpoint, ice must be prevented from forming on the helideck, escape passages, escape doors and hatches and handrails. Norsk Hydro A/S, as one of the major operators in the harsh environment outside northern Norway, recognized at an early stage the need for special considerations for the drilling rigs intended for year-round drilling in these regions. In 1982 Norsk Hydro awarded a contract for an engineering study leading to the design of a harsh environment semisubmersible drilling rig. The basic requirement was to develop a unit for safe and efficient year-round drilling operation in the waters of northern Norway. The study was completed in 1983 and resulted in a comprehensive report including a building specification. The electric heat tracing system designed to prevent icing on the unit is described.

  5. Solar water heating: FEMP fact sheet

    SciTech Connect (OSTI)

    Clyne, R.

    1999-09-30

    Using the sun to heat domestic water makes sense in almost any climate. Solar water heaters typically provide 40 to 80{percent} of a building's annual water-heating needs. A solar water-heating system's performance depends primarily on the outdoor temperature, the temperature to which the water is heated, and the amount of sunlight striking the collector.

  6. Energy Saver 101: Water Heating Infographic | Department of Energy

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

    Energy Saver 101: Water Heating Infographic Energy Saver 101: Water Heating Infographic Looking for ways to save money on water heating? Energy Saver 101: Water Heating infographic ...

  7. Condensing Heating and Water Heating Equipment Workshop Location...

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

    Condensing Heating and Water Heating Equipment Workshop Location: Washington Gas Light Appliance Training Facility 6801 Industrial Road Springfield, VA Date: October 9, 2014 Time: ...

  8. South River EMC- Solar Water Heating Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    South River Electric Membership Corporation (EMC) is providing rebates to encourage their customers to install solar water heating systems. To be eligible for the rebate solar collectors must have...

  9. GreyStone Power- Solar Water Heating Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    GreyStone Power, an electricity cooperative serving 103,000 customers in Georgia, introduced a solar water heating rebate in March 2009. This $500 rebate is available to customers regardless of...

  10. Drain-Water Heat Recovery | Department of Energy

    Energy Savers [EERE]

    Heat & Cool Water Heating Drain-Water Heat Recovery Drain-Water Heat Recovery Diagram of a drain water heat recovery system. Diagram of a drain water heat recovery system. ...

  11. Indoor unit for electric heat pump

    DOE Patents [OSTI]

    Draper, Robert; Lackey, Robert S.; Fagan, Jr., Thomas J.; Veyo, Stephen E.; Humphrey, Joseph R.

    1984-01-01

    An indoor unit for an electric heat pump is provided in modular form including a refrigeration module 10, an air mover module 12, and a resistance heat package module 14, the refrigeration module including all of the indoor refrigerant circuit components including the compressor 36 in a space adjacent the heat exchanger 28, the modules being adapted to be connected to air flow communication in several different ways as shown in FIGS. 4-7 to accommodate placement of the unit in various orientations.

  12. Wonewoc Electric & Water Util | Open Energy Information

    Open Energy Info (EERE)

    Wonewoc Electric & Water Util Jump to: navigation, search Name: Wonewoc Electric & Water Util Place: Wisconsin Phone Number: (608) 464-3114 Website: www.wonewocwisc.compublicwor...

  13. Modern Electric Water Company | Open Energy Information

    Open Energy Info (EERE)

    Modern Electric Water Company Jump to: navigation, search Name: Modern Electric Water Company Address: 904 North Pines Road Place: Spokane Valley, WA Zip: 99206 Phone Number: (509)...

  14. Heat Exchangers for Solar Water Heating Systems | Department...

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

    from iStockphoto.com Image of a heat exchanger. | Photo from iStockphoto.com Solar water heating systems use heat exchangers to transfer solar energy absorbed in solar...

  15. Diesel Engine Waste Heat Recovery Utilizing Electric Trubocompound

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

    Technology | Department of Energy Trubocompound Technology Diesel Engine Waste Heat Recovery Utilizing Electric Trubocompound Technology 2003 DEER Conference Presentation: Caterpillar Inc. 2003_deer_algrain.pdf (5.77 MB) More Documents & Publications Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound Technology Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound Technology An Engine System Approach to Exhaust Waste Heat Recovery

  16. Water-Heating Dehumidifier - Energy Innovation Portal

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

    Find More Like This Return to Search Water-Heating Dehumidifier Oak Ridge National ... developed at ORNL dehumidifies air and then recycles heat to warm water in a water heater. ...

  17. Thermoelectric Conversion of Wate Heat to Electricity in an IC...

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

    Wate Heat to Electricity in an IC Engine Powered Vehicle Thermoelectric Conversion of Wate ... MB) More Documents & Publications Thermoelectric Conversion of Waste Heat to ...

  18. The Swiss Competence Center for Energy Research Heat and Electricity...

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

    on buildings and processes by exploring advanced adiabatic compressed air storage (AA-CAES), pumped heat electric storage (PHES) and high-temperature process heat. iii) Hydrogen...

  19. Drain-Water Heat Recovery | Department of Energy

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

    Heat & Cool Water Heating Drain-Water Heat Recovery ... Diagram of a drain water heat recovery system. Any hot water ... Drain-water (or greywater) heat recovery systems capture ...

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

    SciTech Connect (OSTI)

    Shapiro, C.; Puttagunta, S.

    2013-08-01

    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).

  1. APPARATUS FOR CONVERTING HEAT INTO ELECTRICITY

    DOE Patents [OSTI]

    Crouthamel, C.E.; Foster, M.S.

    1964-01-28

    This patent shows an apparatus for converting heat to electricity. It includes a galvanic cell having an anodic metal anode, a fused salt electrolyte, and a hydrogen cathode having a diffusible metal barrier of silver-- palladium alloy covered with sputtered iron on the side next to the fused electrolyte. Also shown is a regenerator for regenerating metal hydride produced by the galvanic cell into hydrogen gas and anodic metal, both of which are recycled. (AEC)

  2. Water Impacts of the Electricity Sector (Presentation)

    SciTech Connect (OSTI)

    Macknick, J.

    2012-06-01

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

  3. Protective tubes for sodium heated water tubes

    DOE Patents [OSTI]

    Essebaggers, Jan

    1979-01-01

    A heat exchanger in which water tubes are heated by liquid sodium which minimizes the results of accidental contact between the water and the sodium caused by failure of one or more of the water tubes. A cylindrical protective tube envelopes each water tube and the sodium flows axially in the annular spaces between the protective tubes and the water tubes.

  4. Electrically heated particulate filter enhanced ignition strategy

    DOE Patents [OSTI]

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

    2012-10-23

    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. A grid of electrically resistive material is applied to an exterior upstream surface of the PF and selectively heats exhaust passing through the grid to initiate combustion of particulates within the PF. A catalyst coating applied to at least one of the PF and the grid. A control module estimates a temperature of the grid and controls the engine to produce a desired exhaust product to increase the temperature of the grid.

  5. Electrically heated particulate filter using catalyst striping

    DOE Patents [OSTI]

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

    2013-07-16

    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. A grid of electrically resistive material is applied to an exterior upstream surface of the PF and selectively heats exhaust passing through the grid to initiate combustion of particulates within the PF. A catalyst coating is applied to the PF that increases a temperature of the combustion of the particulates within the PF.

  6. Electrically heated particulate filter embedded heater design

    DOE Patents [OSTI]

    Gonze, Eugene V.; Chapman, Mark R.

    2014-07-01

    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.

  7. "Table B26. Water-Heating Energy Sources, Floorspace, 1999"

    U.S. Energy Information Administration (EIA) Indexed Site

    6. Water-Heating Energy Sources, Floorspace, 1999" ,"Total Floorspace (million square feet)" ,"All Buildings","All Buildings with Water Heating","Water-Heating Energy Sources Used ...

  8. Bloomer Electric & Water Co | Open Energy Information

    Open Energy Info (EERE)

    Bloomer Electric & Water Co Jump to: navigation, search Name: Bloomer Electric & Water Co Place: Wisconsin Phone Number: 715-568-3331 Website: www.ci.bloomer.wi.usutilities Outage...

  9. Microwave vs. Electric Kettle: Which Appliance Is in Hot Water in #EnergyFaceoff Round 4?

    Broader source: Energy.gov [DOE]

    In the final #EnergyFaceoff round, the electric kettle takes on the microwave for the honor of heating your water.

  10. Santa Clara Water & Sewer- Solar Water Heating Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    In 1975, the City of Santa Clara established the nation's first municipal solar utility. Under the Solar Water Heating Program, the Santa Clara Water & Sewer Utilities Department supplies,...

  11. Heat Transfer Fluids for Solar Water Heating Systems | Department of Energy

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

    Solar Water Heaters » Heat Transfer Fluids for Solar Water Heating Systems Heat Transfer Fluids for Solar Water Heating Systems Illustration of a solar water heater. Illustration of a solar water heater. Heat-transfer fluids carry heat through solar collectors and a heat exchanger to the heat storage tanks in solar water heating systems. When selecting a heat-transfer fluid, you and your solar heating contractor should consider the following criteria: Coefficient of expansion - the fractional

  12. Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound

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

    Technology | Department of Energy 2 DEER Conference Presentation: Caterpillar Inc. 2002_deer_hopmann.pdf (828.29 KB) More Documents & Publications Diesel Engine Waste Heat Recovery Utilizing Electric Turbocompound Technology Diesel Engine Waste Heat Recovery Utilizing Electric Trubocompound Technology An Engine System Approach to Exhaust Waste Heat Recovery

  13. Residential CO2 Heat Pump Water Heater | Department of Energy

    Energy Savers [EERE]

    Residential CO2 Heat Pump Water Heater Residential CO2 Heat Pump Water Heater CO2 Heat Pump Water Heater Prototype
    Credit: Oak Ridge National Lab CO2 Heat Pump Water Heater ...

  14. California Solar Initiative- Low-Income Solar Water Heating Rebate Program

    Broader source: Energy.gov [DOE]

    The program is only available to customers who currently heat their water with natural gas in the service territories of Pacific Gas and Electric Company (PG&E), San Diego Gas & Electric ...

  15. Grid-Interactive Renewable Water Heating Economic and Environmental Value

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

    1 Grid-Interactive Renewable Water Heating Economic and Environmental Value Grid-interactive renewable water heaters have smart controls that quickly change their charge rate and charge level, factoring in renewable generation and other critical needs of the grid; thereby significantly reducing carbon emissions and bringing a new dimension of conservation and efficiency to the electric grid. The Steffes grid-interactive renewable water heater controller provides utilities with an affordable and

  16. Thermoelectrici Conversion of Waste Heat to Electricity in an IC

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

    Engine-Powered Vehicle | Department of Energy Thermoelectrici Conversion of Waste Heat to Electricity in an IC Engine-Powered Vehicle Thermoelectrici Conversion of Waste Heat to Electricity in an IC Engine-Powered Vehicle 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_schock.pdf (615.66 KB) More Documents & Publications Thermoelectric Conversion of Waste Heat to Electricity in an IC Engine Powered Vehicle Thermoelectric Conversion of Waste

  17. Solar Water Heating Webinar | Department of Energy

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

    Weatherization Assistance Program » Pilot Projects » Solar Water Heating Webinar Solar Water Heating Webinar Watch a recording of National Renewable Energy Laboratory (NREL) Senior Engineer Andy Walker's Nov. 16, 2010, presentation about residential solar water heating technologies and applications. It's one in a series of Webinars to support state and local projects funded by Sustainable Energy Resources for Consumers Grants. You can also read a transcript of the Webinar. More Information For

  18. Heat Pump Water Heaters | Department of Energy

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

    Heat Pump Water Heaters Heat Pump Water Heaters The Department of Energy (DOE) develops standardized data templates for reporting the results of tests conducted in accordance with current DOE test procedures. Templates may be used by third-party laboratories under contract with DOE that conduct testing in support of ENERGY STAR® verification, DOE rulemakings, and enforcement of the federal energy conservation standards. Heat Pump Water Heaters -- v1.7 (350.5 KB) More Documents &

  19. An Assessment of Heating Fuels And Electricity Markets During...

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

    PDF icon An Assessment of Heating Fuels And Electricity Markets During the Winters of 2013... Before the House Subcommittee on Energy and Power - Committee on Energy and Commerce

  20. Thermoelectric Conversion of Waste Heat to Electricity in an...

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

    Describes TEG systems built at MSU to mitigate couple failures and a cost-benefit analysis ... More Documents & Publications Thermoelectric Conversion of Wate Heat to Electricity in an ...

  1. Ash reduction system using electrically heated particulate matter filter

    DOE Patents [OSTI]

    Gonze, Eugene V [Pinckney, MI; Paratore, Jr., Michael J; He, Yongsheng [Sterling Heights, MI

    2011-08-16

    A control system for reducing ash comprises a temperature estimator module that estimates a temperature of an electrically heated particulate matter (PM) filter. A temperature and position estimator module estimates a position and temperature of an oxidation wave within the electrically heated PM filter. An ash reduction control module adjusts at least one of exhaust flow, fuel and oxygen levels in the electrically heated PM filter to adjust a position of the oxidation wave within the electrically heated PM filter based on the oxidation wave temperature and position.

  2. Thermoelectric Conversion of Waste Heat to Electricity in an...

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

    Peer Evaluation PDF icon ace049schock2011o.pdf More Documents & Publications Thermoelectric Conversion of Waste Heat to Electricity in an IC Engine Powered Vehicle...

  3. Thermoelectric Conversion of Waste Heat to Electricity in an...

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

    thermoelectrics on a OTR truck PDF icon schock.pdf More Documents & Publications Thermoelectric Conversion of Waste Heat to Electricity in an IC Engine Powered Vehicle...

  4. Water Heating Standing Technical Committee Presentation

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

    Standing Technical Committee Water Heating Residential Energy Efficiency Stakeholder's Meeting February 29, 2012 - Austin, Texas 2 STC Chairman Responsibilities * To maintain the...

  5. HVAC, Water Heating, and Appliance Subprogram Overview - 2016...

    Office of Environmental Management (EM)

    Heating, and Appliance Subprogram Overview - 2016 BTO Peer Review HVAC, Water Heating, and ... Office's Emerging Technologies: HVAC, Water Heating, and Appliance subprogram. ...

  6. [Waste water heat recovery system

    SciTech Connect (OSTI)

    Not Available

    1993-04-28

    The production capabilities for and field testing of the heat recovery system are described briefly. Drawings are included.

  7. Analysis of Large- Capacity Water Heaters in Electric Thermal Storage Programs

    SciTech Connect (OSTI)

    Cooke, Alan L.; Anderson, David M.; Winiarski, David W.; Carmichael, Robert T.; Mayhorn, Ebony T.; Fisher, Andrew R.

    2015-03-17

    This report documents a national impact analysis of large tank heat pump water heaters (HPWH) in electric thermal storage (ETS) programs and conveys the findings related to concerns raised by utilities regarding the ability of large-tank heat pump water heaters to provide electric thermal storage services.

  8. Mohave Electric Cooperative- Heat Pump Rebate Program

    Broader source: Energy.gov [DOE]

    Mohave Electric Cooperative is a non-profit that serves the communities of Bullhead City, Fort Mohave, Mohave Valley, Wikieup, Hackberry and Peach Springs. Mohave Electric Cooperative offers...

  9. Storage Electric Water Heaters | Department of Energy

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

    Electric Water Heaters Storage Electric Water Heaters The Department of Energy (DOE) develops standardized data templates for reporting the results of tests conducted in accordance with current DOE test procedures. Templates may be used by third-party laboratories under contract with DOE that conduct testing in support of ENERGY STAR® verification, DOE rulemakings, and enforcement of the federal energy conservation standards. Water Heaters, Storage Electric -- v2.0 (102.27 KB) More Documents

  10. Tankless Electric Water Heaters | Department of Energy

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

    Electric Water Heaters Tankless Electric Water Heaters The Department of Energy (DOE) develops standardized data templates for reporting the results of tests conducted in accordance with current DOE test procedures. Templates may be used by third-party laboratories under contract with DOE that conduct testing in support of ENERGY STAR® verification, DOE rulemakings, and enforcement of the federal energy conservation standards. Water Heaters, Tankless Electric -- v2.0 (98.91 KB) More Documents

  11. Solar Water Heating System Maintenance and Repair | Department...

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

    Water Heating System Maintenance and Repair Solar Water Heating System Maintenance and Repair Rooftop solar water heaters need regular maintenance to operate at peak efficiency. |...

  12. Solar Water Heating System Maintenance and Repair | Department...

    Energy Savers [EERE]

    Water Heating System Maintenance and Repair Solar Water Heating System Maintenance and Repair Rooftop solar water heaters need regular maintenance to operate at peak efficiency. | ...

  13. Simple solar water heating systems: The SWAP program in Florida

    SciTech Connect (OSTI)

    Harrison, J.

    1997-11-01

    This article describes the development of a solar water heating system appropriate for low-income Florida residents and the appliances developed in conjunction with it that may appeal to a wider market. Among the topics discussed are size and design of the system including passive preheaters and affordable active systems. Electric water heaters with 40 and 50 gallon capacity were found to be the most cost effective. The feed-back from customers is also discussed. 3 figs.

  14. Utilization of Heat Pump Water Heaters for Load Management

    SciTech Connect (OSTI)

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

    2014-01-01

    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.

  15. Thermoelectric Conversion of Exhaust Gas Waste Heat into Usable Electricity

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

    | Department of Energy Exhaust Gas Waste Heat into Usable Electricity Thermoelectric Conversion of Exhaust Gas Waste Heat into Usable Electricity Presents successful incorporation of one of the most promising classes of the new materials, the skutterudites, into a working automotive TEG prototype and test results on its performance deer11_meisner.pdf (1.17 MB) More Documents & Publications Skutterudite Thermoelectric Generator For Automotive Waste Heat Recovery Develop Thermoelectric

  16. Absorption Heat Pump Water Heater

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

    Water Heater Kyle Gluesenkamp Building Equipment Group, ETSD gluesenkampk@ornl.gov 865-241-2952 April 3, 2013 CRADA - GE Development of High Performance Residential Gas Water ...

  17. Predicts the Steady-State Heating and Cooling Performance of Electric Heat Pump

    Energy Science and Technology Software Center (OSTI)

    1993-01-13

    Oak Ridge National Laboratory (ORNL) is a leader in the development of analytical tools for the design of electrically driven, air-to-air heat pumps. Foremost among these tools is the ORNL Heat Pump Design Model, which can be used to predict the steady-state heating and cooling performance of an electrically driven, air-source heat pump. This version is three to five times faster than the earlier version, easier to use and more versatile.

  18. Drain-Water Heat Recovery | Department of Energy

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

    Heat & Cool » Water Heating » Drain-Water Heat Recovery Drain-Water Heat Recovery Diagram of a drain water heat recovery system. Diagram of a drain water heat recovery system. Any hot water that goes down the drain carries away energy with it. That's typically 80%-90% of the energy used to heat water in a home. Drain-water (or greywater) heat recovery systems capture this energy from water you've already used (for example, to shower, wash dishes, or wash clothing) to preheat cold water

  19. Workshop on Condensing Heating and Water Heating Equipment

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

    Workshop on Condensing Heating and Water Heating Equipment Thursday, October 9, 2014 List of Attendees Organization/Attendees DOE - John Cymbalsky - Ashley Armstrong - Johanna Hariharan AGA - Kathryn Clay - Rick Murphy - Lisa Dundon APGA - Dave Schryver - Bud Miller Gas Technology Institute - Neil Leslie Washington Gas Light - Melissa Adams - Kevin Dunn ACEEE - Harvey Sachs ASAP - Andrew deLaski ASE - Rodney Sobin NRDC - Elizabeth Noll AHRI - Frank Stanonik ACCA - Charlie McCrudden - Glenn

  20. Report on Solar Water Heating Quantitative Survey

    SciTech Connect (OSTI)

    Focus Marketing Services

    1999-05-06

    This report details the results of a quantitative research study undertaken to better understand the marketplace for solar water-heating systems from the perspective of home builders, architects, and home buyers.

  1. Research & Development Roadmap: Emerging Water Heating Technologies

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Research and Development (R&D) Roadmap for Emerging Water Heating Technologies provides recommendations to the Building Technologies Office (BTO) on R&D activities to pursue that will aid in achieving BTO’s energy savings goals.

  2. Piedmont EMC- Solar Water Heating Rebate Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Piedmont Electric Membership Corporation is offering a $500 rebate to its residential members who install solar water heaters on their homes. The utility recommends but does not require the system...

  3. Siting Your Solar Water Heating System | Department of Energy

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

    Siting Your Solar Water Heating System Siting Your Solar Water Heating System Before you buy and install a solar water heating system, you need to first consider your site's solar...

  4. The Market - Who Needs Heat Pump Water Heaters? (Journal Article...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: The Market - Who Needs Heat Pump Water Heaters? Citation Details In-Document Search Title: The Market - Who Needs Heat Pump Water Heaters? Heat pump water heaters ...

  5. Siting Your Solar Water Heating System | Department of Energy

    Energy Savers [EERE]

    Siting Your Solar Water Heating System Siting Your Solar Water Heating System Before you buy and install a solar water heating system, you need to first consider your site's solar ...

  6. Subcooled Flow Boiling Heat Transfer to Water and Ethylene Glycol...

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

    Subcooled Flow Boiling Heat Transfer to Water and Ethylene GlycolWater Mixtures in a Bottom-Heated Tube Title Subcooled Flow Boiling Heat Transfer to Water and Ethylene Glycol...

  7. Energy Factor Analysis for Gas Heat Pump Water Heaters

    SciTech Connect (OSTI)

    Gluesenkamp, Kyle R

    2016-01-01

    Gas heat pump water heaters (HPWHs) can improve water heating efficiency with zero GWP and zero ODP working fluids. The energy factor (EF) of a gas HPWH is sensitive to several factors. In this work, expressions are derived for EF of gas HPWHs, as a function of heat pump cycle COP, tank heat losses, burner efficiency, electrical draw, and effectiveness of supplemental heat exchangers. The expressions are used to investigate the sensitivity of EF to each parameter. EF is evaluated on a site energy basis (as used by the US DOE for rating water heater EF), and a primary energy-basis energy factor (PEF) is also defined and included. Typical ranges of values for the six parameters are given. For gas HPWHs, using typical ranges for component performance, EF will be 59 80% of the heat pump cycle thermal COP (for example, a COP of 1.60 may result in an EF of 0.94 1.28). Most of the reduction in COP is due to burner efficiency and tank heat losses. Gas-fired HPWHs are theoretically be capable of an EF of up to 1.7 (PEF of 1.6); while an EF of 1.1 1.3 (PEF of 1.0 1.1) is expected from an early market entry.

  8. Blue Ridge Electric Cooperative- Heat Pump Loan Program

    Broader source: Energy.gov [DOE]

    Blue Ridge Electric Cooperative (BREC) offers low interest loans to help members finance the purchase of energy efficient heat pumps. Loans under $1,500 can be financed for up to 42 months, and...

  9. York Electric Cooperative- Dual Fuel Heat Pump Rebate Program

    Broader source: Energy.gov [DOE]

    York Electric Cooperative, Inc. (YEC) offers a $200 rebate to members who install a dual fuel heat pump in homes or businesses. The rebates are for primary residences, commercial, and industrial...

  10. Geothermal Energy for Production of Heat and Electricity Economically Simulated

    Energy Science and Technology Software Center (OSTI)

    2015-02-28

    GEOPHIRES is a software tool to investigate technical and economic performance of a geothermal system. Possible end-use options are electricity, direct-use heat and co-generation.

  11. SODIUM-WATER HEAT EXCHANGER

    DOE Patents [OSTI]

    Simmons, W.R.; Koch, L.J.

    1962-04-17

    A heat exchanger comprising a tank for hot liquid and a plurality of concentric, double tubes for cool liquid extending vertically through the tank is described. These tubes are bonded throughout most of their length but have an unbonded portion at both ends. The inner tubes extend between headers located above and below the tanmk and the outer tubes are welded into tube sheets forming the top and bottom of the tank at locations in the unbonded portions of the tubes. (AEC)

  12. Regional Variation in Residential Heat Pump Water Heater Performance...

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

    Performance of Water Heating Systems Building America Technology Solutions for New and Existing Homes: Performance of a Heat Pump Water Heater in the Hot-Humid Climate, ...

  13. Building Codes and Regulations for Solar Water Heating Systems...

    Office of Environmental Management (EM)

    Building Codes and Regulations for Solar Water Heating Systems Building Codes and Regulations for Solar Water Heating Systems June 24, 2012 - 1:50pm Addthis Photo Credit:...

  14. Building America Case Study: Indirect Solar Water Heating Systems...

    Energy Savers [EERE]

    Indirect Solar Water Heating Systems in Single-Family Homes Greenfield, Massachusetts ... Building Component: Solar water heating Application: Single-family Years Tested: 2010-2013 ...

  15. Covered Product Category: Residential Heat Pump Water Heaters...

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

    Heat Pump Water Heaters Covered Product Category: Residential Heat Pump Water Heaters The Federal Energy Management Program (FEMP) provides acquisition guidance and Federal ...

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

    Energy Savers [EERE]

    Central Multifamily Water Heating Systems Building America Webinar: Central Multifamily Water Heating Systems The webinar was presented on January 21, 2015, and focused on the ...

  17. HVAC, Water Heating, and Appliances Overview - 2015 BTO Peer...

    Energy Savers [EERE]

    HVAC, Water Heating, and Appliances Overview - 2015 BTO Peer Review Presenter: Tony Bouza, U.S. Department of Energy View the Presentation HVAC, Water Heating, and Appliances ...

  18. HVAC, Water Heating, and Appliance Overview - 2016 BTO Peer Review...

    Energy Savers [EERE]

    HVAC, Water Heating, and Appliance Overview - 2016 BTO Peer Review HVAC, Water Heating, and Appliance Overview - 2016 BTO Peer Review Presenter: Antonio M. Bouza, U.S. Department ...

  19. Adsorption Heat Pump Water Heater | Department of Energy

    Energy Savers [EERE]

    Adsorption Heat Pump Water Heater Adsorption Heat Pump Water Heater Lead Performer: Oak Ridge National Laboratory - Oak Ridge, TN DOE Funding: 500,000 Project Term: Oct. 2013 - ...

  20. Warm Springs Water District District Heating Low Temperature...

    Open Energy Info (EERE)

    Water District District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Warm Springs Water District District Heating Low Temperature Geothermal...

  1. Expansion and Improvement of Solar Water Heating Technology in...

    Open Energy Info (EERE)

    and Improvement of Solar Water Heating Technology in China Project Management Office Jump to: navigation, search Name: Expansion and Improvement of Solar Water Heating Technology...

  2. Direct Use for Building Heat and Hot Water Presentation Slides...

    Energy Savers [EERE]

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

  3. Absorption Heat Pump Water Heater - 2013 Peer Review | Department...

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

    Absorption Heat Pump Water Heater - 2013 Peer Review Absorption Heat Pump Water Heater - 2013 Peer Review Emerging Technologies Project for the 2013 Building Technologies Office's ...

  4. Research and Development Roadmap for Emerging Water Heating Technologi...

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

    Emerging Water Heating Technologies W. Goetzler, M. Guernsey, and M. Droesch September ... AND DEVELOPMENT ROADMAP FOR EMERGING WATER HEATING TECHNOLOGIES ii Preface Preface ...

  5. Heat Pump Water Heater Using Solid-State Energy Converters

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

    Heat Pump Water Heater Using Solid-State Energy Converters 2015 Building Technologies ... Home Water Heaters with Affordable, Reliable Solid-State Heat Pumps Key Partners: ...

  6. Comparison of Advanced Residential Water Heating Technologies in the United States

    SciTech Connect (OSTI)

    Maguire, J.; Fang, X.; Wilson, E.

    2013-05-01

    Gas storage, gas tankless, condensing, electric storage, heat pump, and solar water heaters were simulated in several different climates across the US installed in both conditioned and unconditioned space and subjected to several different draw profiles. While many preexisting models were used, new models of condensing and heat pump water heaters were created specifically for this work.

  7. Eugene Water and Electric Board | Open Energy Information

    Open Energy Info (EERE)

    Eugene Water and Electric Board Jump to: navigation, search Logo: Eugene Water and Electric Board Name: Eugene Water and Electric Board Address: 500 East 4th Avenue Place: Eugene,...

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

    SciTech Connect (OSTI)

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

    2010-05-14

    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.

  9. SEP Success Story: Farming Out Heat and Electricity through Biopower |

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

    Department of Energy Farming Out Heat and Electricity through Biopower SEP Success Story: Farming Out Heat and Electricity through Biopower December 16, 2011 - 11:46am Addthis Cows like these in Skagit County, Washington, supply the biodigester developed by Kevin Maas of Farm Power up to 70,000 gallons of manure per day. The newest Farm Power facility in Washington generates enough electricity to power 500 homes. Photo courtesy of sea_turtle. Cows like these in Skagit County, Washington,

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

    SciTech Connect (OSTI)

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

    2014-06-01

    This paper explores the laboratory performance of five integrated Heat Pump Water Heaters (HPWHs) across a wide range of operating conditions representative of U.S. 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™ whole-house building simulations.

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

    SciTech Connect (OSTI)

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

    2014-06-01

    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.

  12. Combined heat recovery and make-up water heating system

    SciTech Connect (OSTI)

    Kim, S.Y.

    1988-05-24

    A cogeneration plant is described comprising in combination: a first stage source of hot gas; a duct having an inlet for receiving the hot gas and an outlet stack open to the atmosphere; a second stage recovery heat steam generator including an evaporator situated in the duct, and economizer in the duct downstream of the evaporator, and steam drum fluidly connected to the evaporator and the economizer; feedwater supply means including a deaerator heater and feedwater pump for supplying deaerated feedwater to the steam drum through the economizer; makeup water supply means including a makeup pump for delivering makeup water to the deaerator heater; means fluidly connected to the steam drum for supplying auxiliary steam to the deaerator heater; and heat exchanger means located between the deaerator and the economizer, for transferring heat from the feedwater to the makeup water, thereby increasing the temperature of the makeup water delivered to the deaerator and decreasing the temperature of the feedwater delivered to the economizer, without fluid exchange.

  13. Jilin Province Local Water Electricity Co Ltd | Open Energy Informatio...

    Open Energy Info (EERE)

    Water Electricity Co Ltd Jump to: navigation, search Name: Jilin Province Local Water & Electricity Co.,Ltd Place: Changchun, Jilin Province, China Zip: 130022 Sector: Hydro...

  14. Miyi County Wantan Water and Electric Power Development Co Ltd...

    Open Energy Info (EERE)

    Wantan Water and Electric Power Development Co Ltd Jump to: navigation, search Name: Miyi County Wantan Water and Electric Power Development Co. Ltd Place: Panzhihua, Sichuan...

  15. Kangding Hualong Water Resources Electric Power Investment Co...

    Open Energy Info (EERE)

    Hualong Water Resources Electric Power Investment Co Ltd Jump to: navigation, search Name: Kangding Hualong Water Resources & Electric Power Investment Co., Ltd. Place: Ganzi...

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

    Office of Environmental Management (EM)

    Electric and Gas Water Heaters Energy Cost Calculator for Electric and Gas Water Heaters Vary equipment size, energy cost, hours of operation, and or efficiency level. INPUT ...

  17. Purchasing Energy-Efficient Residential Electric Storage Water...

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

    Energy-Efficient Residential Electric Storage Water Heaters Purchasing Energy-Efficient Residential Electric Storage Water Heaters The Federal Energy Management Program (FEMP) ...

  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.

    2013-07-01

    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. Generator powered electrically heated diesel particulate filter

    DOE Patents [OSTI]

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

    2014-03-18

    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.

  20. Water Heating Products and Services | Department of Energy

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

    Water Heating Products and Services Water Heating Products and Services Choosing an efficient water heater will help you save money and Energy. | Photo Credit Energy Department Choosing an efficient water heater will help you save money and Energy. | Photo Credit Energy Department Use the following links to get product information and locate professional services for water heating. Product Information Solar Pool Heating Systems Florida Solar Energy Center Listing of solar pool heating systems

  1. Using Solar Hot Water to Address Piping Heat Losses in Multifamily Buildings

    SciTech Connect (OSTI)

    Springer, David; Seitzler, Matt; Backman, Christine; Weitzel, Elizabeth

    2015-10-01

    Solar thermal water heating is most cost effective when applied to multifamily buildings and some states offer incentives or other inducements to install them. However, typical solar water heating designs do not allow the solar generated heat to be applied to recirculation losses, only to reduce the amount of gas or electric energy needed for hot water that is delivered to the fixtures. For good reasons, hot water that is recirculated through the building is returned to the water heater, not to the solar storage tank. The project described in this report investigated the effectiveness of using automatic valves to divert water that is normally returned through the recirculation piping to the gas or electric water heater instead to the solar storage tank. The valves can be controlled so that the flow is only diverted when the returning water is cooler than the water in the solar storage tank.

  2. Water Heating Products and Services | Department of Energy

    Energy Savers [EERE]

    Find ENERGY STAR Gas Tankless Water Heaters ENERGY STAR Find ENERGY STAR Heat Pump Water Heaters ENERGY STAR Find ENERGY STAR Solar Water Heaters ENERGY STAR Find Product ...

  3. Building America Standing Technical Committee- Water Heating

    Broader source: Energy.gov [DOE]

    The Building America program is focused on delivering market acceptable energy efficiency solutions to homeowners, builders, and contractors. Near term goals of 30-50% source energy savings are currently targeted. This document examines water heating gaps and barriers, and is updated as of Feb. 2012.

  4. Water Heating Products and Services | Department of Energy

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

    Water Heating Products and Services Water Heating Products and Services May 29, 2012 - 7:04pm Addthis Choosing an efficient water heater will help you save money and Energy. |...

  5. Solar Water Heating System Maintenance and Repair | Department...

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

    Water Heating System Maintenance and Repair Solar Water Heating System Maintenance and Repair May 30, 2012 - 2:35pm Addthis Rooftop solar water heaters need regular maintenance to...

  6. Save on Home Water Heating | Department of Energy

    Energy Savers [EERE]

    on Home Water Heating Save on Home Water Heating August 19, 2014 - 10:46am Addthis Purchasing a water heater with the ENERGY STAR label ensures you are buying an energy ...

  7. Iron aluminide useful as electrical resistance heating elements

    DOE Patents [OSTI]

    Sikka, Vinod K.; Deevi, Seetharama C.; Fleischhauer, Grier S.; Hajaligol, Mohammad R.; Lilly, Jr., A. Clifton

    2001-01-01

    The invention relates generally to aluminum containing iron-base alloys useful as electrical resistance heating elements. The aluminum containing iron-base alloys have improved room temperature ductility, electrical resistivity, cyclic fatigue resistance, high temperature oxidation resistance, low and high temperature strength, and/or resistance to high temperature sagging. The alloy has an entirely ferritic microstructure which is free of austenite and includes, in weight %, over 4% Al, .ltoreq.1% Cr and either .gtoreq.0.05% Zr or ZrO.sub.2 stringers extending perpendicular to an exposed surface of the heating element or .gtoreq.0.1% oxide dispersoid particles. The alloy can contain 14-32% Al, .ltoreq.2% Ti, .ltoreq.2% Mo, .ltoreq.1% Zr, .ltoreq.1% C, .ltoreq.0.1% B, .ltoreq.30% oxide dispersoid and/or electrically insulating or electrically conductive covalent ceramic particles, .ltoreq.1% rare earth metal, .ltoreq.1% oxygen, .ltoreq.3% Cu, balance Fe.

  8. Iron aluminide useful as electrical resistance heating elements

    DOE Patents [OSTI]

    Sikka, V.K.; Deevi, S.C.; Fleischhauer, G.S.; Hajaligol, M.R.; Lilly, A.C. Jr.

    1997-04-15

    The invention relates generally to aluminum containing iron-base alloys useful as electrical resistance heating elements. The aluminum containing iron-base alloys have improved room temperature ductility, electrical resistivity, cyclic fatigue resistance, high temperature oxidation resistance, low and high temperature strength, and/or resistance to high temperature sagging. The alloy has an entirely ferritic microstructure which is free of austenite and includes, in weight %, over 4% Al, {<=}1% Cr and either {>=}0.05% Zr or ZrO{sub 2} stringers extending perpendicular to an exposed surface of the heating element or {>=}0.1% oxide dispersoid particles. The alloy can contain 14-32% Al, {<=}2% Ti, {<=}2% Mo, {<=}1% Zr, {<=}1% C, {<=}0.1% B, {<=}30% oxide dispersoid and/or electrically insulating or electrically conductive covalent ceramic particles, {<=}1% rare earth metal, {<=}1% oxygen, {<=}3% Cu, balance Fe. 64 figs.

  9. Iron aluminide useful as electrical resistance heating elements

    DOE Patents [OSTI]

    Sikka, Vinod K.; Deevi, Seetharama C.; Fleischhauer, Grier S.; Hajaligol, Mohammad R.; Lilly, Jr., A. Clifton

    1999-01-01

    The invention relates generally to aluminum containing iron-base alloys useful as electrical resistance heating elements. The aluminum containing iron-base alloys have improved room temperature ductility, electrical resistivity, cyclic fatigue resistance, high temperature oxidation resistance, low and high temperature strength, and/or resistance to high temperature sagging. The alloy has an entirely ferritic microstructure which is free of austenite and includes, in weight %, over 4% Al, .ltoreq.1% Cr and either .gtoreq.0.05% Zr or ZrO.sub.2 stringers extending perpendicular to an exposed surface of the heating element or .gtoreq.0.1% oxide dispersoid particles. The alloy can contain 14-32% Al, .ltoreq.2% Ti, .ltoreq.2% Mo, .ltoreq.1% Zr, .ltoreq.1% C, .ltoreq.0.1% B, .ltoreq.30% oxide dispersoid and/or electrically insulating or electrically conductive covalent ceramic particles, .ltoreq.1% rare earth metal, .ltoreq.1% oxygen, .ltoreq.3% Cu, balance Fe.

  10. Iron aluminide useful as electrical resistance heating elements

    DOE Patents [OSTI]

    Sikka, Vinod K.; Deevi, Seetharama C.; Fleischhauer, Grier S.; Hajaligol, Mohammad R.; Lilly, Jr., A. Clifton

    1997-01-01

    The invention relates generally to aluminum containing iron-base alloys useful as electrical resistance heating elements. The aluminum containing iron-base alloys have improved room temperature ductility, electrical resistivity, cyclic fatigue resistance, high temperature oxidation resistance, low and high temperature strength, and/or resistance to high temperature sagging. The alloy has an entirely ferritic microstructure which is free of austenite and includes, in weight %, over 4% Al, .ltoreq.1% Cr and either .gtoreq.0.05% Zr or ZrO.sub.2 stringers extending perpendicular to an exposed surface of the heating element or .gtoreq.0.1% oxide dispersoid particles. The alloy can contain 14-32% Al, .ltoreq.2% Ti, .ltoreq.2% Mo, .ltoreq.1% Zr, .ltoreq.1% C, .ltoreq.0.1% B, .ltoreq.30% oxide dispersoid and/or electrically insulating or electrically conductive covalent ceramic particles, .ltoreq.1% rare earth metal, .ltoreq.1% oxygen, .ltoreq.3% Cu, balance Fe.

  11. Climate, extreme heat, and electricity demand in California

    SciTech Connect (OSTI)

    Miller, N.L.; Hayhoe, K.; Jin, J.; Auffhammer, M.

    2008-04-01

    Climate projections from three atmosphere-ocean climate models with a range of low to mid-high temperature sensitivity forced by the Intergovernmental Panel for Climate Change SRES higher, middle, and lower emission scenarios indicate that, over the 21st century, extreme heat events for major cities in heavily air-conditioned California will increase rapidly. These increases in temperature extremes are projected to exceed the rate of increase in mean temperature, along with increased variance. Extreme heat is defined here as the 90 percent exceedance probability (T90) of the local warmest summer days under the current climate. The number of extreme heat days in Los Angeles, where T90 is currently 95 F (32 C), may increase from 12 days to as many as 96 days per year by 2100, implying current-day heat wave conditions may last for the entire summer, with earlier onset. Overall, projected increases in extreme heat under the higher A1fi emission scenario by 2070-2099 tend to be 20-30 percent higher than those projected under the lower B1 emission scenario, ranging from approximately double the historical number of days for inland California cities (e.g. Sacramento and Fresno), up to four times for previously temperate coastal cities (e.g. Los Angeles, San Diego). These findings, combined with observed relationships between high temperature and electricity demand for air-conditioned regions, suggest potential shortfalls in transmission and supply during T90 peak electricity demand periods. When the projected extreme heat and peak demand for electricity are mapped onto current availability, maintaining technology and population constant only for demand side calculations, we find the potential for electricity deficits as high as 17 percent. Similar increases in extreme heat days are suggested for other locations across the U.S. southwest, as well as for developing nations with rapidly increasing electricity demands. Electricity response to recent extreme heat events, such

  12. An Assessment of Heating Fuels And Electricity Markets During the

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

    An Assessment of Heating Fuels And Electricity Markets During the Winters of 2013-2014 and 2014-2015 October 2015 This page intentionally blank For Further Information This report was prepared under the auspices of the Energy Infrastructure Modeling and Analysis (EIMA) division of the Office of Electricity Delivery and Energy Reliability (OE). OE's vision is a U.S. energy delivery system that is reliable in the face of all hazards and resilient to disruptions, supports U.S. economic

  13. Sustainable Energy Resources for Consumers Webinar on Solar Water Heating

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

    Transcript | Department of Energy Solar Water Heating Transcript Sustainable Energy Resources for Consumers Webinar on Solar Water Heating Transcript Video recording transcript of a Webinar on Nov. 16, 2010 about residential solar water heating applications solar_water_heating_webinar.pdf (152.62 KB) More Documents & Publications Sustainable Energy Resources for Consumers (SERC) - Solar Hot Water Sustainable Energy Resources for Consumers Webinar on Residential Water Heaters Sustainable

  14. HVAC, Water Heating, and Appliances | Department of Energy

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

    Emerging Technologies » HVAC, Water Heating, and Appliances HVAC, Water Heating, and Appliances About the Portfolio The HVAC/Water Heating/Appliance subprogram develops cost effective, energy efficient technologies with national labs and industry partners. Technical analysis has shown that heat pumps have the technical potential to save up to 50% of the energy used by conventional HVAC technologies in residential buildings. Our focus is on the introduction of new heat pumping technologies, heat

  15. Technologies for Production of Heat and Electricity

    SciTech Connect (OSTI)

    Jacob J. Jacobson; Kara G. Cafferty

    2014-04-01

    Biomass is a desirable source of energy because it is renewable, sustainable, widely available throughout the world, and amenable to conversion. Biomass is composed of cellulose, hemicellulose, and lignin components. Cellulose is generally the dominant fraction, representing about 40 to 50% of the material by weight, with hemicellulose representing 20 to 50% of the material, and lignin making up the remaining portion [4,5,6]. Although the outward appearance of the various forms of cellulosic biomass, such as wood, grass, municipal solid waste (MSW), or agricultural residues, is different, all of these materials have a similar cellulosic composition. Elementally, however, biomass varies considerably, thereby presenting technical challenges at virtually every phase of its conversion to useful energy forms and products. Despite the variances among cellulosic sources, there are a variety of technologies for converting biomass into energy. These technologies are generally divided into two groups: biochemical (biological-based) and thermochemical (heat-based) conversion processes. This chapter reviews the specific technologies that can be used to convert biomass to energy. Each technology review includes the description of the process, and the positive and negative aspects.

  16. List of Solar Water Heat Incentives | Open Energy Information

    Open Energy Info (EERE)

    Photovoltaics Solar Water Heat Ground Source Heat Pumps Yes City and County of Denver - Solar Panel Permitting (Colorado) SolarWind Permitting Standards Colorado Commercial...

  17. Refrigerant charge management in a heat pump water heater

    SciTech Connect (OSTI)

    Chen, Jie; Hampton, Justin W.

    2014-06-24

    Heat pumps that heat or cool a space and that also heat water, refrigerant management systems for such heat pumps, methods of managing refrigerant charge, and methods for heating and cooling a space and heating water. Various embodiments deliver refrigerant gas to a heat exchanger that is not needed for transferring heat, drive liquid refrigerant out of that heat exchanger, isolate that heat exchanger against additional refrigerant flowing into it, and operate the heat pump while the heat exchanger is isolated. The heat exchanger can be isolated by closing an electronic expansion valve, actuating a refrigerant management valve, or both. Refrigerant charge can be controlled or adjusted by controlling how much liquid refrigerant is driven from the heat exchanger, by letting refrigerant back into the heat exchanger, or both. Heat pumps can be operated in different modes of operation, and segments of refrigerant conduit can be interconnected with various components.

  18. Electrically heated particulate filter diagnostic systems and methods

    DOE Patents [OSTI]

    Gonze, Eugene V [Pinckney, MI

    2009-09-29

    A system that diagnoses regeneration of an electrically heated particulate filter is provided. The system generally includes a grid module that diagnoses a fault of the grid based on at least one of a current signal and a voltage signal. A diagnostic module at least one of sets a fault status and generates a warning signal based on the fault of the grid.

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

    SciTech Connect (OSTI)

    Not Available

    2013-12-01

    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).

  20. Integrated exhaust and electrically heated particulate filter regeneration systems

    DOE Patents [OSTI]

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

    2013-01-08

    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.

  1. Heat pump water heater and storage tank assembly

    DOE Patents [OSTI]

    Dieckmann, John T.; Nowicki, Brian J.; Teagan, W. Peter; Zogg, Robert

    1999-09-07

    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.

  2. Field Monitoring Protocol: Heat Pump Water Heaters

    SciTech Connect (OSTI)

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

    2013-02-01

    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.

  3. Technology data characterizing water heating in commercial buildings: Application to end-use forecasting

    SciTech Connect (OSTI)

    Sezgen, O.; Koomey, J.G.

    1995-12-01

    Commercial-sector conservation analyses have traditionally focused on lighting and space conditioning because of their relatively-large shares of electricity and fuel consumption in commercial buildings. In this report we focus on water heating, which is one of the neglected end uses in the commercial sector. The share of the water-heating end use in commercial-sector electricity consumption is 3%, which corresponds to 0.3 quadrillion Btu (quads) of primary energy consumption. Water heating accounts for 15% of commercial-sector fuel use, which corresponds to 1.6 quads of primary energy consumption. Although smaller in absolute size than the savings associated with lighting and space conditioning, the potential cost-effective energy savings from water heaters are large enough in percentage terms to warrant closer attention. In addition, water heating is much more important in particular building types than in the commercial sector as a whole. Fuel consumption for water heating is highest in lodging establishments, hospitals, and restaurants (0.27, 0.22, and 0.19 quads, respectively); water heating`s share of fuel consumption for these building types is 35%, 18% and 32%, respectively. At the Lawrence Berkeley National Laboratory, we have developed and refined a base-year data set characterizing water heating technologies in commercial buildings as well as a modeling framework. We present the data and modeling framework in this report. The present commercial floorstock is characterized in terms of water heating requirements and technology saturations. Cost-efficiency data for water heating technologies are also developed. These data are intended to support models used for forecasting energy use of water heating in the commercial sector.

  4. A Consumer's Guide: Heat Your Water with the Sun (Brochure)

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

    Cover photo: The people living in this house enjoy hot water that is heated with a solar ... keep swimming pools warm- they can also heat much of your home's water and interior space. ...

  5. Enhanced Geothermal Systems: Comparing Water and CO2 as Heat...

    Office of Scientific and Technical Information (OSTI)

    ENHANCED GEOTHERMAL SYSTEMS (EGS): COMPARING WATER AND CO 2 AS HEAT TRANSMISSION FLUIDS ... with supercritical CO 2 instead of water as heat transmission fluid (D.W. Brown, 2000). ...

  6. Solar Water Heating with Low-Cost Plastic Systems (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2012-01-01

    Newly developed solar water heating technology can help Federal agencies cost effectively meet the EISA requirements for solar water heating in new construction and major renovations. This document provides design considerations, application, economics, and maintenance information and resources.

  7. Low-Cost Solar Water Heating Research and Development Roadmap

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

    Cost Solar Water Heating Research and Development Roadmap K. Hudon, T. Merrigan, J. Burch ... No. DE-AC36-08GO28308 Low-Cost Solar Water Heating Research and Development Roadmap ...

  8. Water Heating R&D | Department of Energy

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

    R&D Water Heating R&D Lead Performer: Oak Ridge National Laboratory (ORNL) - Oak Ridge, TN ... PROJECT OBJECTIVE Water heating accounts for 13% of primary energy consumption in ...

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

    SciTech Connect (OSTI)

    Not Available

    2012-02-01

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

  10. Solar Domestic Water Heating: a Roof-Integrated Evaluation

    SciTech Connect (OSTI)

    2009-09-03

    This fact sheet describes an evaluation of the performance of a roof-integrated solar water heating system.

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

    Energy Savers [EERE]

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

  12. Boiling water reactor-full length emergency core cooling heat...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: Boiling water reactor-full length emergency core cooling heat transfer ... Citation Details In-Document Search Title: Boiling water reactor-full length emergency ...

  13. Recovery of Water from Boiler Flue Gas Using Condensing Heat...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: Recovery of Water from Boiler Flue Gas Using Condensing Heat Exchangers Citation Details In-Document Search Title: Recovery of Water from Boiler Flue Gas Using ...

  14. Heat Pump Water Heaters: Controlled Field Research of Impact...

    Office of Scientific and Technical Information (OSTI)

    Water Heaters: Controlled Field Research of Impact on Space Conditioning and Demand Response Characteristics Citation Details In-Document Search Title: Heat Pump Water Heaters: ...

  15. Grid-Interactive Renewable Water Heating Economic and Environmental...

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

    1 Grid-Interactive Renewable Water Heating Economic and Environmental Value Grid-interactive renewable water heaters have smart controls that quickly change their charge rate and ...

  16. HVAC, Water Heating and Appliances Sub-Program Logic Model

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

    & water heating technologies Researchers equipped with validated solutions to develop or improve components & optimize tech. systems at reduced cost High-efficiency HVAC, water ...

  17. Heat Pump Water Heater Using Solid-State Energy Converters

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

    Heat Pump Water Heater Using Solid-State Energy Converters 2016 Building Technologies ... Project Goal: Demonstrate a home water heater product with affordable and reliable ...

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

    SciTech Connect (OSTI)

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

    2013-11-13

    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

  19. Evaluation of water source heat pumps for the Juneau, Alaska Area

    SciTech Connect (OSTI)

    Jacobsen, J.J.; King, J.C.; Eisenhauer, J.L.; Gibson, C.I.

    1980-07-01

    The purposes of this project were to evaluate the technical and economic feasibility of water source heat pumps (WSHP) for use in Juneau, Alaska and to identify potential demonstration projects to verify their feasibility. Information is included on the design, cost, and availability of heat pumps, possible use of seawater as a heat source, heating costs with WSHP and conventional space heating systems, and life cycle costs for WSHP-based heating systems. The results showed that WSHP's are technically viable in the Juneau area, proper installation and maintenance is imperative to prevent equipment failures, use of WSHP would save fuel oil but increase electric power consumption. Life cycle costs for WSHP's are about 8% above that for electric resistance heating systems, and a field demonstration program to verify these results should be conducted. (LCL)

  20. CO2 Heat Pump Water Heater

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

    CO 2 Heat Pump Water Heater 2016 Building Technologies Office Peer Review Kyle Gluesenkamp, gluesenkampk@ornl.gov Oak Ridge National Laboratory Evaporator 2 Project Summary Timeline: Start date: Oct 1, 2009 Planned end date: Sep 30, 2016 Key Milestones 1. Go/No-Go: Price premium <$750 compared to baseline HFC HPWH; FY15Q2 (MET) 2. Go/No-Go: EF>2.0 and FHR>50 gallon to meet ENERGY STAR qualification criteria; FY14Q4 (MET) Budget: Total DOE to Date: $2,367k Total Project: $2,435k Key

  1. Electrode wells for powerline-frequency electrical heating of soils

    DOE Patents [OSTI]

    Buettner, Harley M.; Daily, William D.; Aines, Roger D.; Newmark, Robin L.; Ramirez, Abelardo L.; Siegel, William H.

    1999-01-01

    An electrode well for use in powerline-frequency heating of soils for decontamination of the soil. Heating of soils enables the removal of volatile organic compounds from soil when utilized in combination with vacuum extraction. A preferred embodiment of the electrode well utilizes a mild steel pipe as the current-carrying conductor to at least one stainless steel electrode surrounded by a conductive backfill material, preferably graphite or steel shot. A covering is also provided for electrically insulating the current-carrying pipe. One of the electrode wells is utilized with an extraction well which is under subatmospheric pressure to withdraw the volatile material, such as gasoline and trichioroethylene (TCE) as it is heated.

  2. Electrode wells for powerline-frequency electrical heating of soils

    DOE Patents [OSTI]

    Buettner, H.M.; Daily, W.D.; Aines, R.D.; Newmark, R.L.; Ramirez, A.L.; Siegel, W.H.

    1999-05-25

    An electrode well is described for use in powerline-frequency heating of soils for decontamination of the soil. Heating of soils enables the removal of volatile organic compounds from soil when utilized in combination with vacuum extraction. A preferred embodiment of the electrode well utilizes a mild steel pipe as the current-carrying conductor to at least one stainless steel electrode surrounded by a conductive backfill material, preferably graphite or steel shot. A covering is also provided for electrically insulating the current-carrying pipe. One of the electrode wells is utilized with an extraction well which is under subatmospheric pressure to withdraw the volatile material, such as gasoline and trichloroethylene (TCE) as it is heated. 4 figs.

  3. Morenci Water and Electric Co | Open Energy Information

    Open Energy Info (EERE)

    Morenci Water and Electric Co Jump to: navigation, search Name: Morenci Water and Electric Co Place: Arizona Phone Number: (928) 865-2229 Outage Hotline: (928) 865-2229 References:...

  4. Bath Electric Gas & Water Sys | Open Energy Information

    Open Energy Info (EERE)

    Electric Gas & Water Sys Jump to: navigation, search Name: Bath Electric Gas & Water Sys Place: New York Phone Number: (607) 776-3072 Website: www.villageofbath.orgBEGWS.ht Outage...

  5. New London Electric&Water Util | Open Energy Information

    Open Energy Info (EERE)

    Electric&Water Util Jump to: navigation, search Name: New London Electric&Water Util Place: Wisconsin Phone Number: (920) 982-8516 Website: newlondonutilities.org Outage Hotline:...

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

    Energy Savers [EERE]

    Electric Kettle: Which Appliance Is in Hot Water in EnergyFaceoff Round 4? Microwave vs. Electric Kettle: Which Appliance Is in Hot Water in EnergyFaceoff Round 4? November 24, ...

  7. Blue Ridge Electric Cooperative- Residential Water Heater Rebate

    Broader source: Energy.gov [DOE]

    Blue Ridge Electric Cooperative offers up to $300 for the purchase of an electric water heater. The rebate amount varies based on the size of the water heater purchased.

  8. "Table B32. Water-Heating Energy Sources, Floorspace for Non...

    U.S. Energy Information Administration (EIA) Indexed Site

    Water-Heating Energy Sources, Floorspace for Non-Mall Buildings, 2003" ,"Total Floorspace (million square feet)" ,"All Buildings*","Buildings with Water Heating","Water-Heating ...

  9. Table B37. Water Heating Equipment, Number of Buildings and Floorspace...

    U.S. Energy Information Administration (EIA) Indexed Site

    7. Water Heating Equipment, Number of Buildings and Floorspace, 1999" ,"Number of ... ,"All Buildings","All Buildings with Water Heating","Type of Water Heating ...

  10. Covered Product Category: Water-Cooled Electric Chillers | Department...

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

    Covered Product Category: Water-Cooled Electric Chillers The Federal Energy Management Program (FEMP) provides acquisition guidance and Federal efficiency requirements for water-co...

  11. 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.

    2013-07-01

    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.

  12. Energy Savings and Breakeven Costs for Residential Heat Pump Water Heaters in the United States

    SciTech Connect (OSTI)

    Maguire, Jeff; Burch, Jay; Merrigan, Tim; Ong, Sean

    2013-07-01

    Heat pump water heaters (HPWHs) have recently re-emerged 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, NREL performed simulations 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 United States. When replacing an electric water heater, the HPWH is likely to break even in California, the southern United States, 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.

  13. HVAC, Water Heating, and Appliances Overview - 2015 BTO Peer Review |

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

    Department of Energy Appliances Overview - 2015 BTO Peer Review HVAC, Water Heating, and Appliances Overview - 2015 BTO Peer Review Presenter: Tony Bouza, U.S. Department of Energy View the Presentation HVAC, Water Heating, and Appliances Overview - 2015 BTO Peer Review (801.59 KB) More Documents & Publications HVAC, Water Heater and Appliance R&D - 2014 BTO Peer Review HVAC, Water Heating, and Appliance Subprogram Overview - 2016 BTO Peer Review Research & Development Roadmap:

  14. Building America Webinar: Central Multifamily Water Heating Systems |

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

    Department of Energy Central Multifamily Water Heating Systems Building America Webinar: Central Multifamily Water Heating Systems The webinar was presented on January 21, 2015, and focused on the effective use of central heat pump water heaters (HPWHs) and control systems to reduce the energy use in hot water distribution. Presenters and specific topics for this webinar included: Elizabeth Weitzel from the Building America team, Alliance for Residential Building Innovation, presenting

  15. List of Heat recovery Incentives | Open Energy Information

    Open Energy Info (EERE)

    Heat Solar Thermal Electric Solar Thermal Process Heat Solar Water Heat Energy Storage Nuclear Wind Heat recovery Fuel Cells using Renewable Fuels No Agricultural Energy Efficiency...

  16. Refrigerant charge management in a heat pump water heater

    DOE Patents [OSTI]

    Chen, Jie; Hampton, Justin W.

    2016-07-05

    Heat pumps that heat or cool a space and that also heat water, refrigerant management systems for such heat pumps, and methods of managing refrigerant charge. Various embodiments remove idle refrigerant from a heat exchanger that is not needed for transferring heat by opening a refrigerant recovery valve and delivering the idle refrigerant from the heat exchanger to an inlet port on the compressor. The heat exchanger can be isolated by closing an electronic expansion valve, actuating a refrigerant management valve, or both. Refrigerant charge can be controlled by controlling how much refrigerant is drawn from the heat exchanger, by letting some refrigerant back into the heat exchanger, or both. Heat pumps can be operated in different modes of operation, and various components can be interconnected with refrigerant conduit. Some embodiments deliver refrigerant gas to the heat exchanger and drive liquid refrigerant out prior to isolating the heat exchanger.

  17. Influence of district heating water temperatures on the fuel saving and reduction of ecological cost of the heat generation

    SciTech Connect (OSTI)

    Portacha, J.; Smyk, A.; Zielinski, A.; Misiewicz, L.

    1998-07-01

    Results of examinations carried out on the district heating water temperature influence in the cogeneration plant with respect to both the fuel economy and the ecological cost reduction of heat generation for the purposes of heating and hot service water preparation are presented in this paper. The decrease of water return temperature effectively contributes to the increase of fuel savings in all the examined cases. The quantitative savings depend on the outlet water temperature of the cogeneration plant and on the fuel type combusted at the alternative heat generating plant. A mathematical model and a numerical method for calculations of annual cogeneration plant performance, e.g. annual heat and electrical energy produced in cogeneration mode, and the annual fuel consumption, are also discussed. In the discussed mathematical model, the variable operating conditions of cogeneration plant vs. outside temperature and method of control can be determined. The thermal system of cogeneration plant was decomposed into subsystems so as to set up the mathematical model. The determination of subsystem tasks, including a method of convenient aggregation thereof is an essential element of numerical method for calculations of a specific cogeneration plant thermal system under changing conditions. Costs of heat losses in the environment, resulting from the pollutants emission, being formed in the fuel combustion process in the heat sources, were defined. In addition, the environment quantitative and qualitative pollution characteristics were determined both for the heat generation in a cogeneration plant and for an alternative heat-generating plant. Based on the calculations, a profitable decrease of ecological costs is achieved in the cogeneration economy even if compared with the gas-fired heat generating plant. Ecological costs of coal-fired heat generating plant are almost three time higher than those of the comparable cogeneration plant.

  18. Heat to electricity conversion by cold carrier emissive energy harvesters

    SciTech Connect (OSTI)

    Strandberg, Rune

    2015-12-07

    This paper suggests a method to convert heat to electricity by the use of devices called cold carrier emissive energy harvesters (cold carrier EEHs). The working principle of such converters is explained and theoretical power densities and efficiencies are calculated for ideal devices. Cold carrier EEHs are based on the same device structure as hot carrier solar cells, but works in an opposite way. Whereas a hot carrier solar cell receives net radiation from the sun and converts some of this radiative heat flow into electricity, a cold carrier EEH sustains a net outflux of radiation to the surroundings while converting some of the energy supplied to it into electricity. It is shown that the most basic type of cold carrier EEHs have the same theoretical efficiency as the ideal emissive energy harvesters described earlier by Byrnes et al. In the present work, it is also shown that if the emission from the cold carrier EEH originates from electron transitions across an energy gap where a difference in the chemical potential of the electrons above and below the energy gap is sustained, power densities slightly higher than those given by Byrnes et al. can be achieved.

  19. Comparison of Advanced Residential Water Heating Technologies in the United States

    SciTech Connect (OSTI)

    Maguire, Jeff; Fang, Xia; Wilson, Eric

    2013-05-01

    In this study, gas storage, gas tankless, condensing, electric storage, heat pump, and solar water heaters were simulated in several different climates across the United States, installed in both conditioned and unconditioned space and subjected to several different draw profiles. While many pre-existing models were used, new models of condensing and heat pump water heaters were created specifically for this work. In each case modeled, the whole house was simulated along with the water heater to capture any interactions between the water heater and the space conditioning equipment.

  20. Heat Pump Water Heater Basics | Department of Energy

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

    Water Heating » Heat Pump Water Heater Basics Heat Pump Water Heater Basics August 19, 2013 - 2:59pm Addthis Illustration of a heat pump water heater, which looks like a tall cylinder with a small chamber on top and a larger one on the bottom. In the top chamber are a fan, a cylindrical compressor, and an evaporator that runs along the inside of the chamber. Jutting out from the exterior of the bottom chamber is a temperature and pressure relief valve. This valve has a tube called a hot water

  1. Questar Gas- Residential Solar Assisted Water Heating Rebate Program

    Broader source: Energy.gov [DOE]

    Questar Gas provides incentives for residential customers to purchase and install solar water heating systems (both for domestic and pool heating uses) in their newly-constructed homes. Rebates of...

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

    Office of Energy Efficiency and Renewable Energy (EERE)

    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...

  3. Electrically heated particulate filter regeneration using hydrocarbon adsorbents

    DOE Patents [OSTI]

    Gonze, Eugene V [Pinckney, MI

    2011-02-01

    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. A grid of electrically resistive material selectively heats exhaust passing through the upstream end to initiate combustion of particulates within the PF. A hydrocarbon adsorbent coating applied to the PF releases hydrocarbons into the exhaust to increase a temperature of the combustion of the particulates within the PF.

  4. Outdoor unit construction for an electric heat pump

    DOE Patents [OSTI]

    Draper, R.; Lackey, R.S.

    1984-09-11

    The outdoor unit for an electric heat pump is provided with an upper portion containing propeller fan means for drawing air through the lower portion containing refrigerant coil means in the form of four discrete coils connected together in a subassembly forming a W shape, the unit being provided with four adjustable legs which are retracted in shipment, and are adjusted on site to elevate the unit to a particular height suitable for the particular location in which the unit is installed. 4 figs.

  5. Outdoor unit construction for an electric heat pump

    DOE Patents [OSTI]

    Draper, Robert; Lackey, Robert S.

    1984-01-01

    The outdoor unit for an electric heat pump is provided with an upper portion 10 containing propeller fan means 14 for drawing air through the lower portion 12 containing refrigerant coil means 16 in the form of four discrete coils connected together in a subassembly forming a W shape, the unit being provided with four adjustable legs 64 which are retracted in shipment, and are adjusted on site to elevate the unit to a particular height suitable for the particular location in which the unit is installed.

  6. Experience with thermal storage in tanks of stratified water for solar heating and load management

    SciTech Connect (OSTI)

    Wildin, M.W.; Witkofsky, M.P.; Noble, J.M.; Hopper, R.E.; Stromberg, P.G.

    1982-01-01

    Results have been obtained for performance of stratified tanks of water used to store heating and cooling capacity in a 5574 m/sup 2/ university building. The major sources of energy used to charge the heated tanks were solar energy, obtained via collectors on the roof of the building, and excess heat recovered from the interior of the building via thermal storage and electric-driven heat pump/chillers. Through stratification of the water in the storage tanks and an appropriate system operating strategy, 40 percent of the building's total heating needs were supplied by solar energy during the first four months of 1981. Month-long thermal efficiencies of the storage array ranging from 70 percent during the heating season to nearly 90 percent during the cooling season, were measured. Work is underway to improve the performance of thermal storage.

  7. Thermal overinsulation and the behavior of hot water heating systems

    SciTech Connect (OSTI)

    Casier, Y.

    1982-01-01

    Supported by thermodynamic calculations and field experience G.D.F. disproved the theory that because of their high warm-up/cooldown inertia, hot-water central heating systems are inefficient for insulated dwellings that have low thermal losses, causing overheating in certain situations. With the proper choice of thermostat, water temperature, and piping design, a heating system that uses water as the heat carrier can be responsive to the needs of a tightly insulated residence.

  8. Building Codes and Regulations for Solar Water Heating Systems | Department

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

    of Energy Codes and Regulations for Solar Water Heating Systems Building Codes and Regulations for Solar Water Heating Systems Photo Credit: iStockphoto Photo Credit: iStockphoto Before installing a solar water heating system, you should investigate local building codes, zoning ordinances, and subdivision covenants, as well as any special regulations pertaining to the site. You will probably need a building permit to install a solar energy system onto an existing building. Not every

  9. Commercial Absorption Heat Pump Water Heater | Department of Energy

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

    Absorption Heat Pump Water Heater Commercial Absorption Heat Pump Water Heater Credit: Oak Ridge National Laboratory Credit: Oak Ridge National Laboratory Lead Performer: Oak Ridge National Laboratory - Oak Ridge, TN Partner: A.O. Smith Inc. - Milwaukee, WI DOE Funding: $2,000,000 Cost Share: Provided by CRADA partners Project Term: October 1, 2013 - September 30, 2016 Project Objective The objective of this project is to develop a gas-fired absorption heat pump water heater for the commercial

  10. #AskEnergySaver: Home Water Heating | Department of Energy

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

    Water Heating #AskEnergySaver: Home Water Heating March 24, 2014 - 11:35am Addthis Did you know: Water heaters account for nearly 17 percent of a home’s energy use, consuming more energy than all other household appliances combined. For more about water heaters, check out our <a href="/node/612476">Energy Saver 101 home water heating infographic</a>. | Photo by Eric Grigorian, U.S. Department of Energy Solar Decathlon. Did you know: Water heaters account for nearly 17