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Sample records for dishwasher doors heat

  1. Energy saving dishwasher

    SciTech Connect (OSTI)

    Helwig, W.F.

    1981-03-10

    A control circuit for a dishwashing machine to economize its energy consumption and usage is described. In order to conserve energy, the dishwashing machine has a control system for automatically actuating the components such as the heating elements of the dishwashing machine.

  2. Residential Dishwashers | Department of Energy

    Energy Savers [EERE]

    Dishwashers Residential Dishwashers 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. File Residential Dishwashers -- v3.0 More Documents & Publications Dehumidifiers

  3. Dishwasher: 1; Human: 0 | Department of Energy

    Office of Environmental Management (EM)

    Dishwasher: 1; Human: 0 Dishwasher: 1; Human: 0 December 21, 2009 - 10:58am Addthis Amy Foster Parish My dishwasher and I have been locked in mortal combat for almost a month now, ever since it decided to quit working at nearly the same moment I decided to start washing the Thanksgiving dinner dishes. Over the past week it has started to look as if the dishwasher may have won the battle. And so, while I've been contemplating washing all those Christmas dishes by hand this year, I've also been

  4. Blower Door Tests | Department of Energy

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

    Blower Door Tests Blower Door Tests Blower door test during a home energy audit. Credit: Holtkamp Heating & AC, Inc. Blower door test during a home energy audit. Credit: Holtkamp...

  5. Covered Product Category: Commercial Dishwashers | Department of Energy

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

    Dishwashers Covered Product Category: Commercial Dishwashers The Federal Energy Management Program (FEMP) provides acquisition guidance for commercial dishwashers, which is a product category covered by the ENERGY STAR program. Federal laws and requirements mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law. Meeting Energy Efficiency Requirements for Commercial Dishwashers ENERGY STAR sets efficiency

  6. Blower Door Tests | Department of Energy

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

    Blower Door Tests Blower Door Tests Blower door test during a home energy audit. Credit: Holtkamp Heating & A/C, Inc. Blower door test during a home energy audit. Credit: Holtkamp Heating & A/C, Inc. Professional energy auditors use blower door tests to help determine a home's airtightness. Our Energy Saver 101 infographic explains the importance of a blower door test during a home energy audit. These are some reasons for establishing the proper building tightness: Reducing energy

  7. Covered Product Category: Residential Dishwashers | Department of Energy

    Office of Environmental Management (EM)

    Dishwashers Covered Product Category: Residential Dishwashers The Federal Energy Management Program (FEMP) provides acquisition guidance for residential dishwashers, a product category covered by the ENERGY STAR program. Federal laws and requirements mandate that agencies purchase ENERGY STAR-qualified products in all product categories covered by this program and any acquisition actions that are not specifically exempted by law. MEETING EFFICIENCY REQUIREMENTS FOR FEDERAL PURCHASES The U.S.

  8. DOE Energy Star Testing Reveals Inefficient ASKO Dishwasher ...

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

    Energy Star program has revealed that an ASKO dishwasher (model D5122XXLB), which the company had claimed was Energy Star compliant, consumes more energy than permitted by the...

  9. DOE Closes Investigation of ASKO Dishwasher | Department of Energy

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

    ASKO Appliance Inc.'s dishwasher model D5122XXLB. After testing this model, the Department has found the model to be compliant with federal energy conservation standards. The...

  10. Doors | Open Energy Information

    Open Energy Info (EERE)

    Doors Jump to: navigation, search TODO: Add description List of Doors Incentives Retrieved from "http:en.openei.orgwindex.php?titleDoors&oldid267160...

  11. Doors | Department of Energy

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

    Design » Windows, Doors, & Skylights » Doors Doors Although many people choose wood doors for their beauty, insulated steel and fiberglass doors are more energy-efficient. | Photo courtesy of ©iStockphoto/cstewart Although many people choose wood doors for their beauty, insulated steel and fiberglass doors are more energy-efficient. | Photo courtesy of ©iStockphoto/cstewart Your home's exterior doors can contribute significantly to air leakage, and can also waste energy through

  12. Windows, Doors, and Skylights | Department of Energy

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

    Windows, Doors, and Skylights Windows, Doors, and Skylights Choose energy efficient windows to reduce energy bills and improve the comfort of your home. | Photo courtesy of FSEC/IBACOS. Choose energy efficient windows to reduce energy bills and improve the comfort of your home. | Photo courtesy of FSEC/IBACOS. Windows, doors, and skylights-also known as fenestration-are significant components in a home's envelope. Ensuring they are as energy efficient as possible can save energy; reduce heating,

  13. Doors | Department of Energy

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

    Although many people choose wood doors for their beauty, insulated steel and fiberglass doors are more energy-efficient. | Photo courtesy of ©iStockphoto/cstewart Although many people choose wood doors for their beauty, insulated steel and fiberglass doors are more energy-efficient. | Photo courtesy of ©iStockphoto/cstewart Your home's exterior doors can contribute significantly to air leakage, and can also waste energy through conduction, especially if it's old, uninsulated, improperly

  14. Energy Efficiency Program for Residential Products: Energy Conservation Standards for Residential Dishwashers, Reopening of the Comment Period

    Broader source: Energy.gov [DOE]

    Energy Efficiency Program for Residential Products: Energy Conservation Standards for Residential Dishwashers, Reopening of the Comment Period

  15. Egress door opening assister

    DOE Patents [OSTI]

    Allison, Thomas L.

    2015-10-06

    A door opening spring assistance apparatus is set forth that will automatically apply a door opening assistance force using a combination of rods and coil springs. The release of the rods by the coil springs reduces the force required to set the door in motion.

  16. AHAM Comments_Ex Parte Memo_July 8, 2015_Dishwasher Standards_FINAL (00039960).DOC

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

    July 31, 2015 subject: Ex parte Communication, NOPR for Energy Conservation Standards for Residential Dishwashers, Docket No. EERE-2014-BT-STD-0021 This memo memorializes the meeting between the Association of Home Appliance Manufacturers (AHAM) and the Department of Energy (DOE) on July 8, 2015, for inclusion in the public docket on the Notice of Proposed Rulemaking (NOPR) for Energy Conservation Standards for Residential Dishwashers, Docket No. EERE-2014-BT-STD-0021; RIN 1904- AD24; 79 Fed.

  17. High speed door assembly

    DOE Patents [OSTI]

    Shapiro, C.

    1993-04-27

    A high speed door assembly is described, comprising an actuator cylinder and piston rods, a pressure supply cylinder and fittings, an electrically detonated explosive bolt, a honeycomb structured door, a honeycomb structured decelerator, and a structural steel frame encasing the assembly to close over a 3 foot diameter opening within 50 milliseconds of actuation, to contain hazardous materials and vapors within a test fixture.

  18. Battic Door | Open Energy Information

    Open Energy Info (EERE)

    Battic Door Jump to: navigation, search Name: Battic Door Address: P.O. Box 15 Place: Mansfield, Massachusetts Zip: 02048 Region: Greater Boston Area Sector: Buildings Product:...

  19. Energy Performance Ratings for Windows, Doors, and Skylights | Department

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

    of Energy Before you shop for energy-efficient windows, doors, and skylights, learn about energy performance ratings. | Photo courtesy of iStockphoto.com/JamesBrey. Before you shop for energy-efficient windows, doors, and skylights, learn about energy performance ratings. | Photo courtesy of iStockphoto.com/JamesBrey. You can use the energy performance ratings of windows, doors, and skylights to tell you their potential for gaining and losing heat, as well as transmitting sunlight into your

  20. Electronic door locking mechanism

    DOE Patents [OSTI]

    Williams, G.L.; Kirby, P.G.

    1997-10-21

    The invention is a motorized linkage for engaging a thumb piece in a door mechanism. The device has an exterior lock assembly with a small battery cell and combination lock. Proper entry by a user of a security code allows the battery to operate a small motor within the exterior lock assembly. The small motor manipulates a cam-plunger which moves an actuator pin into a thumb piece. The user applies a force on to the thumb piece. This force is transmitted by the thumb piece to a latch engagement mechanism by the actuator pin. The latch engagement mechanism operates the door latch. 6 figs.

  1. Electronic door locking mechanism

    DOE Patents [OSTI]

    Williams, Gary Lin; Kirby, Patrick Gerald

    1997-01-01

    The invention is a motorized linkage for engaging a thumb piece in a door mechanism. The device has an exterior lock assembly with a small battery cell and combination lock. Proper entry by a user of a security code allows the battery to operate a small motor within the exterior lock assembly. The small motor manipulates a cam-plunger which moves an actuator pin into a thumb piece. The user applies a force on to the thumb piece. This force is transmitted by the thumb piece to a latch engagement mechanism by the actuator pin. The latch engagement mechanism operates the door latch.

  2. Mass transfer of volatile organic compounds from drinking water to indoor air: The role of residential dishwashers

    SciTech Connect (OSTI)

    Howard-Reed, C.; Corsi, R.L.; Moya, J.

    1999-07-01

    Contaminated tap water may be a source of volatile organic compounds (VOCs) in residential indoor air. To better understand the extent and impact of chemical emissions from this source, a two-phase mass balance model was developed based on mass transfer kinetics between each phase. Twenty-nine experiments were completed using a residential dishwasher to determine model parameters. During each experiment, inflow water was spiked with a cocktail of chemical tracers with a wide range of physicochemical properties. In each case, the effects of water temperature, detergent, and dish-loading pattern on chemical stripping efficiencies and mass transfer coefficients were determined. Dishwasher headspace ventilation rates were also measured using an isobutylene tracer gas. Chemical stripping efficiencies for a single cycle ranged from 18% to 55% for acetone, from 96% to 98% for toluene, and from 97% to 98% for ethylbenzene and were consistently 100% for cyclohexane. Experimental results indicate that dishwashers have a relatively low but continuous ventilation rate that results in significant chemical storage within the headspace of the dishwasher. In conjunction with relatively high mass transfer coefficients, low ventilation rates generally lead to emissions that are limited by equilibrium conditions after approximately 1--2 min of dishwasher operation.

  3. Door latching recognition apparatus and process

    DOE Patents [OSTI]

    Eakle, Jr., Robert F. (New Ellenton, SC)

    2012-05-15

    An acoustic door latch detector is provided in which a sound recognition sensor is integrated into a door or door lock mechanism. The programmable sound recognition sensor can be trained to recognize the acoustic signature of the door and door lock mechanism being properly engaged and secured. The acoustic sensor will signal a first indicator indicating that proper closure was detected or sound an alarm condition if the proper acoustic signature is not detected within a predetermined time interval.

  4. Heat pipe device and heat pipe fabricating process

    SciTech Connect (OSTI)

    Busch, C.H.

    1982-08-10

    An energy saving liquid to liquid heat exchanger for a dishwasher or like device discharging hot waste water comprising a hot water tank for holding the waste water from the dishwasher and having inlet and outlet pipes, a cold water tank for holding the fresh water going to a water heater and having inlet and outlet pipes, the cold water tank disposed on top of the hot water tank, a bundle of heat pipes containing low boiling refrigerant disposed inside of the two tanks so as to extract heat from the hot water tank and give it up to the cold water tank, whereby the temperature of the fresh water leaving the heat exchanger is higher than its entering temperature.

  5. Another Door Opens: Marion Invests in Energy Efficiency | Department...

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

    new handicap, motorized door to make the entrance ADA compliant. City Services Director Jay Shoup said the new front doors will increase door space while reducing the city's...

  6. Jamison Door: Order (2013-CE-5348)

    Broader source: Energy.gov [DOE]

    DOE ordered Jamison Door Company to pay a $6,000 civil penalty after finding Jamison Door had failed to certify that certain models of walk-in cooler and freezer components comply with the applicable energy conservation standards.

  7. Consumer-products minimum energy-efficiency-standards program. Topical report on Subtask 3. 1. Evaluation of energy consumption savings of boost heaters in dishwashers

    SciTech Connect (OSTI)

    Not Available

    1980-05-01

    An analysis of the energy conservation and life cycle cost benefits of boost heaters for dishwashers is presented to provide technical information to assist in determining whether to modify the dishwasher test procedure to include boost heaters. Two manufacturers are offering dishwashers which have an inlet water temperature requirement of 120/sup 0/F. Cleaning performance in these appliances is maintained with an electric coil in the sump of the dishwasher, which boosts the incoming water to its final temperature. Both manufacturers have petitioned DOE for exemption from efficiency standards, since current DOE test procedures give no credit for water heater energy savings. The evaluation shows boost heaters to be energy conserving for all conditions. The life cycle cost analysis indicates boost heaters are cost effective in all cases for homes with electric water heaters, and in most cases for homes having gas water heaters. Additionally the proposed standards for dishwashers will lower water consumption in 1985 model dishwashers such that boost heaters will become cost effective in all cases.

  8. Method for Evaluating Energy Use of Dishwashers, Clothes Washers, and Clothes Dryers: Preprint

    SciTech Connect (OSTI)

    Eastment, M.; Hendron, R.

    2006-08-01

    Building America teams are researching opportunities to improve energy efficiency for some of the more challenging end-uses, such as lighting (both fixed and occupant-provided), appliances (clothes washer, dishwasher, clothes dryer, refrigerator, and range), and miscellaneous electric loads, which are all heavily dependent on occupant behavior and product choices. These end-uses have grown to be a much more significant fraction of total household energy use (as much as 50% for very efficient homes) as energy efficient homes have become more commonplace through programs such as ENERGY STAR and Building America. As modern appliances become more sophisticated the residential energy analyst is faced with a daunting task in trying to calculate the energy savings of high efficiency appliances. Unfortunately, most whole-building simulation tools do not allow the input of detailed appliance specifications. Using DOE test procedures the method outlined in this paper presents a reasonable way to generate inputs for whole-building energy-simulation tools. The information necessary to generate these inputs is available on Energy-Guide labels, the ENERGY-STAR website, California Energy Commission's Appliance website and manufacturer's literature. Building America has developed a standard method for analyzing the effect of high efficiency appliances on whole-building energy consumption when compared to the Building America's Research Benchmark building.

  9. Driving Demand: Door-to-Door Outreach & Tracking Impacts (Text Version) |

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

    Department of Energy Driving Demand: Door-to-Door Outreach & Tracking Impacts (Text Version) Driving Demand: Door-to-Door Outreach & Tracking Impacts (Text Version) Marian Fuller: The topic of today is "Driving Demand, Door-To-Door Outreach and Tracking Impacts." We have a really wonderful set of panelists today. My name is Marian Fuller and I work with Lawrence Berkeley National Labs, and I'm one of the technical assistance providers for the Department of Energy. So I just

  10. Accelerate program opens doors for nontraditional students

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

    Accelerate program opens doors for nontraditional students Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue: Dec....

  11. Commercial Refrigerator Door: Order (2013-CE-5351)

    Broader source: Energy.gov [DOE]

    DOE ordered Commercial Refrigerator Door Company, Inc. to pay a $8,000 civil penalty after finding Commercial Refrigerator Door had failed to certify that a variety of models of walk-in cooler and freezer components comply with the applicable energy conservation standards.

  12. Jamison Door: Proposed Penalty (2013-CE-5348)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Jamison Door Company failed to certify a variety of walk-in cooler or freezer components as compliant with the applicable energy conservation standards.

  13. Fermilab | Science Next Door | Subscription Form

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

    Facebook row spacer Twitter row spacer YouTube row spacer Subscribe | Fermilab Home row spacer row spacer row spacer Subscribe to Science Next Door If you would like to receive...

  14. Retrofitting Doors on Open Refrigerated Cases

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

    Retrofitting Doors on Open Refrigerated Cases William Goetzler Navigant Consulting, Inc. wgoetzler@navigant.com (781) 270-8351 April 4, 2013 BBA Refrigeration Project Team Images courtesy of REMIS AMERICA, LLC. 2 | Building Technologies Office eere.energy.gov Technology Overview Image from Investigation of Energy- Efficient Supermarket Display Cases. 2004, Oak Ridge National Laboratory. Background and Motivation * Adding doors to open cases (retrofits) greatly reduces cold air loss - 50-80% load

  15. Ballistic Missile Silo Door Monitoring Analysis

    SciTech Connect (OSTI)

    EDENBURN,MICHAEL W.; TROST,LAWRENCE C.

    2000-01-01

    This paper compares the cost and effectiveness of several potential options that may be used to monitor silo-based ballistic missiles. Silo door monitoring can be used to verify that warheads removed to deactivate or download silo-based ballistic missiles have not been replaced. A precedent for monitoring warhead replacement using reentry vehicle on site inspections (RV-OSIs) and using satellites has been established by START-I and START-II. However, other monitoring options have the potential to be less expensive and more effective. Three options are the most promising if high verification confidence is desired: random monitoring using door sensors; random monitoring using manned or unmanned aircraft; and continuous remote monitoring using unattended door sensors.

  16. Hanford Waste Treatment Plant Sets Massive Protective Shield door in

    Office of Environmental Management (EM)

    Pretreatment Facility | Department of Energy Waste Treatment Plant Sets Massive Protective Shield door in Pretreatment Facility Hanford Waste Treatment Plant Sets Massive Protective Shield door in Pretreatment Facility January 12, 2011 - 12:00pm Addthis The carbon steel doors come together to form an upside-down L-shape. The 102-ton door was set on top of the 85-ton door that was installed at the end of December. The carbon steel doors come together to form an upside-down L-shape. The

  17. Tour Opens Doors to Solar Homes

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

    Doors to Solar Homes For more information contact: e:mail: Public Affairs Golden, Colo., Oct. 14, 1999 — The Tour of Solar Homes will open the doors of hundreds of passive and active solar homes across the nation Oct. 16. The Denver Metro tour will feature innovative houses in Denver, Golden, Littleton, Idaho Springs, Evergreen and Parker that tap energy from the sun. The self-guided tour starts at the Visitors Center of the U.S. Department of Energy's National Renewable Energy Laboratory

  18. Tour Opens Doors, Minds to Solar Energy

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

    Doors, Minds to Solar Energy For more information contact: e:mail: Public Affairs Golden, Colo., Oct. 5, 1998 — The third annual Tour of Solar Homes will open the doors to hundreds of passive and active solar homes across the nation Oct. 17. The Denver-metro leg of the tour, organized by the Colorado Renewable Energy Society, will start at the Visitors Center of the U.S. Department of Energy's National Renewable Energy Laboratory (NREL). Houses and other buildings on the self-guided tour, which

  19. Windows, Doors, & Skylights | Department of Energy

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

    Windows, Doors, & Skylights Windows, Doors, & Skylights Installing storm windows keep your home warm in the winter and cool in the summer while also lowering your energy bills by up to $350 a year. <a href="/node/797126" target="_blank">Start saving today by following a step-by-step guide in our new DIY Savings Project</a>. Installing storm windows keep your home warm in the winter and cool in the summer while also lowering your energy bills by up to $350

  20. Community Power Works' Success Opens Doors to its Future | Department...

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

    Works' Success Opens Doors to its Future Community Power Works' Success Opens Doors to its Future The logo for Community Power Works, with the words Seattle is providing community ...

  1. Operating Experience Level 3, Safety Concern: Roll-up Doors

    Broader source: Energy.gov [DOE]

    This Operating Experience Level 3 (OE-3) document provides information about a safety concern related to roll-up doors that fail unexpectedly, endangering workers. Under normal operation, roll-up doors operate smoothly, and users may not realize the hazard a failed door can present. Industrial doors may weigh more than half of a ton, and uncontrolled gravitational movement is hazardous to personnel and equipment.

  2. Energy Performance Ratings for Windows, Doors, and Skylights | Department

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

    of Energy Energy Performance Ratings for Windows, Doors, and Skylights Energy Performance Ratings for Windows, Doors, and Skylights Before you shop for energy-efficient windows, doors, and skylights, learn about energy performance ratings. | Photo courtesy of iStockphoto.com/JamesBrey. Before you shop for energy-efficient windows, doors, and skylights, learn about energy performance ratings. | Photo courtesy of iStockphoto.com/JamesBrey. You can use the energy performance ratings of windows,

  3. Window, Door, and Skylight Products and Services | Department of Energy

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

    Window, Door, and Skylight Products and Services Window, Door, and Skylight Products and Services Window, Door, and Skylight Products and Services Use the following links to get product information and locate professional services for windows, doors, and skylights. Product Information Awnings in Residential Buildings: The Impact on Energy Use and Peak Demand University of Minnesota Center for Sustainable Building Research Independently Tested and Certified Energy Performance ENERGY STAR®

  4. Nuclear storage overpack door actuator and alignment apparatus

    DOE Patents [OSTI]

    Andreyko, Gregory M. (North Huntingdon, PA)

    2005-05-10

    The invention is a door actuator and alignment apparatus for opening and closing the 15,000-pound horizontally sliding door of a storage overpack. The door actuator includes a ball screw mounted horizontally on a rigid frame including a pair of door panel support rails. An electrically powered ball nut moves along the ball screw. The ball nut rotating device is attached to a carriage. The carriage attachment to the sliding door is horizontally pivoting. Additional alignment features include precision cam followers attached to the rails and rail guides attached to the carriage.

  5. Nuclear Storage Overpack Door Actuator and Alignment Apparatus

    DOE Patents [OSTI]

    Andreyko, Gregory M.

    2005-05-11

    The invention is a door actuator and alignment apparatus for opening and closing the 15,000-pound horizontally sliding door of a storage overpack. The door actuator includes a ball screw mounted horizontally on a rigid frame including a pair of door panel support rails. An electrically powered ball nut moves along the ball screw. The ball nut rotating device is attached to a carriage. The carriage attachment to the sliding door is horizontally pivoting. Additional alignment features include precision cam followers attached to the rails and rail guides attached to the carriage.

  6. Crystal growth furnace with trap doors

    DOE Patents [OSTI]

    Sachs, Emanual M. (Watertown, MA); Mackintosh, Brian H. (Lexington, MA)

    1982-06-15

    An improved furnace is provided for growing crystalline bodies from a melt. The improved furnace is characterized by a door assembly which is remotely controlled and is arranged so as to selectively shut off or permit communication between an access port in the furnace enclosure and a hot zone within that enclosure. The invention is especially adapted to facilitate use of crystal growing cartridges of the type disclosed in U.S. Pat. No. 4,118,197.

  7. Window, Door, and Skylight Products and Services | Department of Energy

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

    Window, Door, and Skylight Products and Services Use the following links to get product information and locate professional services for windows, doors, and skylights. Product Information Awnings in Residential Buildings: The Impact on Energy Use and Peak Demand University of Minnesota Center for Sustainable Building Research Independently Tested and Certified Energy Performance ENERGY STAR® Information on ENERGY STAR performance ratings for windows, doors, and skylights. Product Ratings

  8. Covered Product Category: Residential Windows, Doors, and Skylights |

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

    Department of Energy Windows, Doors, and Skylights Covered Product Category: Residential Windows, Doors, and Skylights The Federal Energy Management Program (FEMP) provides acquisition guidance for residential windows, doors, and skylights, which are an ENERGY STAR-qualified product category. Federal laws and requirements mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law. Most manufacturers display

  9. Door County, Wisconsin: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Door County, Wisconsin: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 45.1113873, -87.0470884 Show Map Loading map... "minzoom":false,"mappin...

  10. Energy Performance Ratings for Windows, Doors, and Skylights...

    Office of Environmental Management (EM)

    The ability of glazing in a window, door, or skylight to transmit sunlight into a home can be measured and rated according to the following energy performance...

  11. Science DMZ Opens Doors to More Science, More Collaboration

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

    Opens Doors to More Science, More Collaboration News & Publications ESnet News Media & Press Publications and Presentations Galleries ESnet Awards and Honors Contact Us Media Jon...

  12. Simplified multizone blower door techniques for multifamily buildings. Final report

    SciTech Connect (OSTI)

    1995-09-01

    This research focused on the applicability of (a) two-blower-door and (b) single-blower-door multi-zone pressurization techniques for estimating the air leakage characteristics of New York State multi-family apartment buildings. The research also investigated the magnitude of external leakage area in multi-family buildings and used computer simulations to estimate the effect of decreasing external and internal leakage areas on air infiltration rates. This research investigates whether two blower doors can be used to determine the ELA of the exterior envelope and the ELA of partitions. Two multi-zone versions of the single-blower-door pressurization method are also examined.

  13. Shutting the Door on Cold Weather | Department of Energy

    Energy Savers [EERE]

    Shutting the Door on Cold Weather Shutting the Door on Cold Weather February 8, 2011 - 11:52am Addthis Andrea Spikes Former Communicator at DOE's National Renewable Energy Laboratory A few months ago, the front door of my condominium cracked. One too many careless slams cracked the wood right at the bolt, which made it difficult to close, let in cold air, and made it easy to break in. Not a good situation, especially since winter was about to begin! Fortunately, my storm door was working just

  14. Dishwasher | Open Energy Information

    Open Energy Info (EERE)

    Contact needs updating Image needs updating Reference needed Missing content Broken link Other Additional Comments Cancel Submit Category: Articles with outstanding TODO tasks...

  15. Retrofitting Doors on Open Refrigerated Cases | Department of Energy

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

    Retrofitting Doors on Open Refrigerated Cases Retrofitting Doors on Open Refrigerated Cases Commercial Buildings Integration Project for the 2013 Building Technologies Office's Program Peer Review PDF icon commlbldgs18_goetzler_040413.pdf More Documents & Publications Better Buildings Alliance - 2013 BTO Peer Review Working Fluids Low Global Warming Potential Refrigerants - 2013 Peer Review Better Buildings Alliance Equipment Performance Specifications - 2013 BTO Peer

  16. List of Doors Incentives | Open Energy Information

    Open Energy Info (EERE)

    Fuels Geothermal Electric Photovoltaics Renewable Fuels Solar Water Heat Natural Gas Hydroelectric energy Small Hydroelectric Yes AlabamaWISE Home Energy Program (Alabama)...

  17. Commercial Refrigerator Door: Proposed Penalty (2013-CE-5351)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Commercial Refrigerator Door Company, Inc. failed to certify a variety of walk-in cooler or freezer components as compliant with the applicable energy conservation standards.

  18. Repairing Windows & Doors: How To's for the Handy Homeowner

    SciTech Connect (OSTI)

    2006-01-05

    This brochure contains tips for homeowners to repair windows and doors in their home that sustained hurricane damage. This publication is a part of the How To's for the Handy Homeowner Series.

  19. Updating the Doors and Windows | Department of Energy

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

    and Windows Updating the Doors and Windows August 23, 2012 - 2:46pm Addthis Stephanie Price Communicator, National Renewable Energy Laboratory Since I can't afford to replace...

  20. Energy Performance Ratings for Windows, Doors, and Skylights...

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

    the rate of air movement around a window, door, or skylight in the presence of a specific pressure difference across it. It's expressed in units of cubic feet per minute per square...

  1. NREL Opens New Doors to Renewable Energy Data - News Releases...

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

    NREL Opens New Doors to Renewable Energy Data Developer.nrel.gov empowers Web developers to use renewable energy data for Web and mobile applications October 25, 2011 The U.S. ...

  2. Hydrogen Student Design Contest Inspires and Opens Doors | Department of

    Office of Environmental Management (EM)

    Energy Student Design Contest Inspires and Opens Doors Hydrogen Student Design Contest Inspires and Opens Doors September 28, 2011 - 3:22pm Addthis A hydrogen-powered Toyota Prius pulls up to Humboldt State University's student designed hydrogen fueling station. A hydrogen-powered Toyota Prius pulls up to Humboldt State University's student designed hydrogen fueling station. Sunita Satyapal Director, Fuel Cell Technologies Office Since 2004, the Hydrogen Student Design Contest has challenged

  3. National Labs Open Doors to Displaced Japanese Researchers | Department of

    Office of Environmental Management (EM)

    Energy Labs Open Doors to Displaced Japanese Researchers National Labs Open Doors to Displaced Japanese Researchers July 5, 2011 - 1:42pm Addthis Maiko Kofu, Atsushi Nagoe and Osamu Yamamuro examine their sample attached to the end of the cryostat stick after running an experiment at Oak Ridge National Laboratory’s Spallation Neutron Source. | Department of Energy Photo | Courtesy of Oak Ridge National Laboratory | Public Domain | Maiko Kofu, Atsushi Nagoe and Osamu Yamamuro examine

  4. Environmental sustainability comparison of a hypothetical pneumatic waste collection system and a door-to-door system

    SciTech Connect (OSTI)

    Punkkinen, Henna; Merta, Elina; Teerioja, Nea; Moliis, Katja; Kuvaja, Eveliina

    2012-10-15

    Highlights: Black-Right-Pointing-Pointer We compare the environmental sustainability of two MSW collection systems. Black-Right-Pointing-Pointer We evaluate pneumatic and door-to-door collection systems. Black-Right-Pointing-Pointer The greenhouse gas emissions of pneumatic collection are around three times higher. Black-Right-Pointing-Pointer System components are decisive but assumptions on electricity use are also important. Black-Right-Pointing-Pointer Pneumatic collection could provide other benefits over door-to-door system. - Abstract: Waste collection is one of the life cycle phases that influence the environmental sustainability of waste management. Pneumatic waste collection systems represent a new way of arranging waste collection in densely populated urban areas. However, limited information is available on the environmental impacts of this system. In this study, we compare the environmental sustainability of conventional door-to-door waste collection with its hypothetical pneumatic alternative. Furthermore, we analyse whether the size of the hypothetical pneumatic system, or the number of waste fractions included, have an impact on the results. Environmental loads are calculated for a hypothetical pneumatic waste collection system modelled on an existing dense urban area in Helsinki, Finland, and the results are compared to those of the prevailing, container-based, door-to-door waste collection system. The evaluation method used is the life-cycle inventory (LCI). In this study, we report the atmospheric emissions of greenhouse gases (GHG), SO{sub 2} and NO{sub x}. The results indicate that replacing the prevailing system with stationary pneumatic waste collection in an existing urban infrastructure would increase total air emissions. Locally, in the waste collection area, emissions would nonetheless diminish, as collection traffic decreases. While the electricity consumption of the hypothetical pneumatic system and the origin of electricity have a significant bearing on the results, emissions due to manufacturing the system's components prove decisive.

  5. SRS Commemorates P & R Reactor Area Completions - SRS Closes the Door on

    Energy Savers [EERE]

    Past Cold War Operations and Opens the Door for Future Missions through Enterprise SRS | Department of Energy Commemorates P & R Reactor Area Completions - SRS Closes the Door on Past Cold War Operations and Opens the Door for Future Missions through Enterprise SRS SRS Commemorates P & R Reactor Area Completions - SRS Closes the Door on Past Cold War Operations and Opens the Door for Future Missions through Enterprise SRS September 29, 2011 - 12:00pm Addthis Media Contacts Jim

  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. Dynamic Object Oriented Requirements System (DOORS) System Test Plan

    SciTech Connect (OSTI)

    JOHNSON, A.L.

    2000-04-01

    The U. S. Department of Energy, Office of River Protection (ORP) will use the Dynamic Object Oriented Requirements System (DOORS) as a tool to assist in identifying, capturing, and maintaining the necessary and sufficient set of requirements for accomplishing the ORP mission. By managing requirements as one integrated set, the ORP will be able to carry out its mission more efficiently and effectively. DOORS is a Commercial-Off-The-Shelf (COTS) requirements management tool. The tool has not been customized for the use of the PIO, at this time.

  8. Updating the Doors and Windows | Department of Energy

    Energy Savers [EERE]

    Updating the Doors and Windows Updating the Doors and Windows August 23, 2012 - 2:46pm Addthis Stephanie Price Communicator, National Renewable Energy Laboratory Since I can't afford to replace my windows like Andrea did recently (I've got a lot more of them for one thing), the next best thing is to be sure the existing ones-- which are double-paned, so that's a help-are well sealed. One of my energy audit recommendations was to caulk the window frames inside and out. My handyman friend Rob and

  9. Evaluation of Waste Heat Recovery and Utilization from Residential Appliances and Fixtures

    SciTech Connect (OSTI)

    Tomlinson, John J; Christian, Jeff; Gehl, Anthony C

    2012-09-01

    Executive Summary In every home irrespective of its size, location, age, or efficiency, heat in the form of drainwater or dryer exhaust is wasted. Although from a waste stream, this energy has the potential for being captured, possibly stored, and then reused for preheating hot water or air thereby saving operating costs to the homeowner. In applications such as a shower and possibly a dryer, waste heat is produced at the same time as energy is used, so that a heat exchanger to capture the waste energy and return it to the supply is all that is needed. In other applications such as capturing the energy in drainwater from a tub, dishwasher, or washing machine, the availability of waste heat might not coincide with an immediate use for energy, and consequently a heat exchanger system with heat storage capacity (i.e. a regenerator) would be necessary. This study describes a two-house experimental evaluation of a system designed to capture waste heat from the shower, dishwasher clothes washer and dryer, and to use this waste heat to offset some of the hot water energy needs of the house. Although each house was unoccupied, they were fitted with equipment that would completely simulate the heat loads and behavior of human occupants including operating the appliances and fixtures on a demand schedule identical to Building American protocol (Hendron, 2009). The heat recovery system combined (1) a gravity-film heat exchanger (GFX) installed in a vertical section of drainline, (2) a heat exchanger for capturing dryer exhaust heat, (3) a preheat tank for storing the captured heat, and (4) a small recirculation pump and controls, so that the system could be operated anytime that waste heat from the shower, dishwasher, clothes washer and dryer, and in any combination was produced. The study found capturing energy from the dishwasher and clothes washer to be a challenge since those two appliances dump waste water over a short time interval. Controls based on the status of the dump valve on these two appliances would have eliminated uncertainty in knowing when waste water was flowing and the recovery system operated. The study also suggested that capture of dryer exhaust heat to heat incoming air to the dryer should be examined as an alternative to using drying exhaust energy for water heating. The study found that over a 6-week test period, the system in each house was able to recover on average approximately 3000 W-h of waste heat daily from these appliance and showers with slightly less on simulated weekdays and slightly more on simulated weekends which were heavy wash/dry days. Most of these energy savings were due to the shower/GFX operation, and the least savings were for the dishwasher/GFX operation. Overall, the value of the 3000 W-h of displaced energy would have been $0.27/day based on an electricity price of $.09/kWh. Although small for today s convention house, these savings are significant for a home designed to approach maximum affordable efficiency where daily operating costs for the whole house are less than a dollar per day. In 2010 the actual measured cost of energy in one of the simulated occupancy houses which waste heat recovery testing was undertaken was $0.77/day.

  10. Covered Product Category: Residential Windows, Doors, and Skylights

    Broader source: Energy.gov [DOE]

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

  11. Give Me My Tax Credit! (Or, How I Almost Bought the Wrong Patio Door)

    Broader source: Energy.gov [DOE]

    Over the past few weeks, my husband and I have been shopping for a new patio door. We currently have a sliding glass door that we have always hated—full exposure to winds from the west and to open...

  12. Technical support document: Energy conservation standards for consumer products: Dishwashers, clothes washers, and clothes dryers including: Environmental impacts; regulatory impact analysis

    SciTech Connect (OSTI)

    Not Available

    1990-12-01

    The Energy Policy and Conservation Act as amended (P.L. 94-163), establishes energy conservation standards for 12 of the 13 types of consumer products specifically covered by the Act. The legislation requires the Department of Energy (DOE) to consider new or amended standards for these and other types of products at specified times. This Technical Support Document presents the methodology, data and results from the analysis of the energy and economic impacts of standards on dishwashers, clothes washers, and clothes dryers. The economic impact analysis is performed in five major areas: An Engineering Analysis, which establishes technical feasibility and product attributes including costs of design options to improve appliance efficiency. A Consumer Analysis at two levels: national aggregate impacts, and impacts on individuals. The national aggregate impacts include forecasts of appliance sales, efficiencies, energy use, and consumer expenditures. The individual impacts are analyzed by Life-Cycle Cost (LCC), Payback Periods, and Cost of Conserved Energy (CCE), which evaluate the savings in operating expenses relative to increases in purchase price; A Manufacturer Analysis, which provides an estimate of manufacturers' response to the proposed standards. Their response is quantified by changes in several measures of financial performance for a firm. An Industry Impact Analysis shows financial and competitive impacts on the appliance industry. A Utility Analysis that measures the impacts of the altered energy-consumption patterns on electric utilities. A Environmental Effects analysis, which estimates changes in emissions of carbon dioxide, sulfur oxides, and nitrogen oxides, due to reduced energy consumption in the home and at the power plant. A Regulatory Impact Analysis collects the results of all the analyses into the net benefits and costs from a national perspective. 47 figs., 171 tabs. (JF)

  13. Metal Oxide Semiconductor Nanoparticles Open the Door to New Medical

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

    Innovations | Argonne National Laboratory Metal Oxide Semiconductor Nanoparticles Open the Door to New Medical Innovations Technology available for licensing: novel nanometer-sized metal oxide semiconductors that allow targeting, initiating and control of in vitro and in vivo chemical reactions in biological molecules, such as DNA, proteins, and antibodies. Allows for targeting, initiation and control of in vitro and in vivo chemical reactions in biological molecules Commercial applications

  14. Container lid gasket protective strip for double door transfer system

    DOE Patents [OSTI]

    Allen, Jr., Burgess M

    2013-02-19

    An apparatus and a process for forming a protective barrier seal along a "ring of concern" of a transfer container used with double door systems is provided. A protective substrate is supplied between a "ring of concern" and a safety cover in which an adhesive layer of the substrate engages the "ring of concern". A compressive foam strip along an opposite side of the substrate engages a safety cover such that a compressive force is maintained between the "ring of concern" and the adhesive layer of the substrate.

  15. Opening the Door: San Diego R&D Workshop Video | Department of Energy

    Energy Savers [EERE]

    Opening the Door: San Diego R&D Workshop Video Opening the Door: San Diego R&D Workshop Video View the video from Jim Brodrick's opening presentation at the February 2011 DOE SSL R&D Workshop in San Diego, California

  16. Category:Articles with outstanding TODO tasks | Open Energy Informatio...

    Open Energy Info (EERE)

    D Data Center Equipment Daylighting Dehumidifiers Dishwasher DOE Doors DuctAir sealing E Efficiency Electric Power Board of Chattanooga Electric vehicles Emerging Energy...

  17. Genome Data from DOOR: a Database for prOkaryotic OpeRons

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

    DOOR provides an Organism View for browsing, a gene search tool, an operon search tool, and the operon prediction interface.[Text taken and edited from http://csbl1.bmb.uga.edu/OperonDB/tutorial.php

  18. Residents Learn to Open Their Doors to Energy Efficiency in Michigan...

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

    Neighborhood sweeps are intensive, house-by-house mini-campaigns designed to convince homeowners to complete a home energy upgrade. The program hoped that behind every door was a ...

  19. Residents Learn to Open Their Doors to Energy Efficiency in Michigan |

    Energy Savers [EERE]

    Department of Energy Residents Learn to Open Their Doors to Energy Efficiency in Michigan Residents Learn to Open Their Doors to Energy Efficiency in Michigan Logo of BetterBuildings for Michigan. BetterBuildings for Michigan conducts neighborhood "sweeps" that have already marketed the program's offerings to more than 11,000 homeowners in 27 targeted communities. Neighborhood sweeps are intensive, house-by-house mini-campaigns designed to convince homeowners to complete a home

  20. SWiFT Turbines Full Dynamic Characterization Opens Doors for Research in

    Energy Savers [EERE]

    the Dynamics of Coupled Systems | Department of Energy SWiFT Turbines Full Dynamic Characterization Opens Doors for Research in the Dynamics of Coupled Systems SWiFT Turbines Full Dynamic Characterization Opens Doors for Research in the Dynamics of Coupled Systems March 31, 2014 - 11:19am Addthis Research conducted at the Scaled Wind Farm Technology Facility (SWiFT) in Lubbock, Texas, drew a lot of interest from attendees at the International Modal Analysis Conference held in Orlando,

  1. New National Labs Pilot Opens Doors to Small Businesses | Department of

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

    Energy National Labs Pilot Opens Doors to Small Businesses New National Labs Pilot Opens Doors to Small Businesses July 8, 2015 - 1:31pm Addthis Through the new Small Business Vouchers Pilot, small businesses will be able to access tools like this large-scale 3D-printer at Oak Ridge National Laboratory's Manufacturing Demonstration Facility. | Photo courtesy of Oak Ridge National Laboratory. Through the new Small Business Vouchers Pilot, small businesses will be able to access tools like

  2. Covered Product Category: Residential Windows, Doors, and Skylights...

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

    for hot climate zones whereas high gain products (greater than 0.55) are designed for cold climate zones. Although tinting can reduce solar heat gain, it also reduces the...

  3. Tax Credits, Rebates & Savings | Department of Energy

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

    undertaken, including: Eligibility: Residential Savings Category: Solar Water Heat, Solar Photovoltaics, Wind (All), Geothermal Heat Pumps, Clothes Washers, Dishwasher,...

  4. Tax Credits, Rebates & Savings | Department of Energy

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

    Specific... Eligibility: Residential Savings Category: Solar Water Heat, Solar Photovoltaics, Geothermal Heat Pumps, Clothes Washers, Dishwasher, RefrigeratorsFreezers,...

  5. Tax Credits, Rebates & Savings | Department of Energy

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

    Solar Water Heat, Geothermal Electric, Solar Thermal Electric, Solar Photovoltaics, Wind (All), Geothermal Heat Pumps, Daylighting, Clothes Washers, Dishwasher, Refrigerators...

  6. Tax Credits, Rebates & Savings | Department of Energy

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

    customers, South... Eligibility: Residential Savings Category: Geothermal Heat Pumps, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Water Heaters, Heat Pumps, Air...

  7. Tax Credits, Rebates & Savings | Department of Energy

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

    Savings Category: Solar Water Heat, Solar Photovoltaics, Geothermal Heat Pumps, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Equipment Insulation, Water Heaters,...

  8. Tax Credits, Rebates & Savings | Department of Energy

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

    Solar Water Heat, Geothermal Electric, Solar Thermal Electric, Solar Photovoltaics, Wind (All), Geothermal Heat Pumps, Daylighting, Clothes Washers, Dishwasher,...

  9. Tax Credits, Rebates & Savings | Department of Energy

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

    Geothermal Heat Pumps, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Lighting, Chillers, Furnaces, Boilers, Heat Pumps, Air conditioners, Programmable...

  10. Tax Credits, Rebates & Savings | Department of Energy

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

    Improvement Specific... Eligibility: Residential Savings Category: Solar Water Heat, Solar Photovoltaics, Geothermal Heat Pumps, Clothes Washers, Dishwasher, Refrigerators...

  11. Self-testing security sensor for monitoring closure of vault doors and the like

    DOE Patents [OSTI]

    Cawthorne, Duane C. (Amarillo, TX)

    1997-05-27

    A self-testing device is provided for a monitoring system for monitoring whether a closure member such as a door or window is closed. The monitoring system includes a switch unit mounted on the frame of the closure member being monitored and including magnetically biased switches connected in one or more electrical monitoring circuits, and a door magnet unit mounted on the closure member being monitored. The door magnet includes one or more permanent magnets that produce a magnetic field which, when the closure member is closed, cause said switches to assume a first state. When the closure member is opened, the switches switch to a second, alarm state. The self-testing device is electrically controllable from a remote location and produces a canceling or diverting magnetic field which simulates the effect of movement of the closure member from the closed position thereof without any actual movement of the member.

  12. Self-testing security sensor for monitoring closure of vault doors and the like

    DOE Patents [OSTI]

    Cawthorne, D.C.

    1997-05-27

    A self-testing device is provided for a monitoring system for monitoring whether a closure member such as a door or window is closed. The monitoring system includes a switch unit mounted on the frame of the closure member being monitored and including magnetically biased switches connected in one or more electrical monitoring circuits, and a door magnet unit mounted on the closure member being monitored. The door magnet includes one or more permanent magnets that produce a magnetic field which, when the closure member is closed, cause said switches to assume a first state. When the closure member is opened, the switches switch to a second, alarm state. The self-testing device is electrically controllable from a remote location and produces a canceling or diverting magnetic field which simulates the effect of movement of the closure member from the closed position thereof without any actual movement of the member. 5 figs.

  13. Energy Efficiency Hits from the Doors (and Windows) | Department of Energy

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

    Hits from the Doors (and Windows) Energy Efficiency Hits from the Doors (and Windows) December 5, 2011 - 5:31am Addthis Ernie Tucker Editor, National Renewable Energy Laboratory Our 1970's-vintage house always seemed a bit too welcoming when howling winter winds swept up Colorado's foothills. Each year, the annual road show staged by Jack Frost and his Chillers would take center stage in our home despite our best efforts to keep these rowdies at bay. There were plenty of reasons why this

  14. Heat pipe array heat exchanger

    DOE Patents [OSTI]

    Reimann, Robert C. (Lafayette, NY)

    1987-08-25

    A heat pipe arrangement for exchanging heat between two different temperature fluids. The heat pipe arrangement is in a ounterflow relationship to increase the efficiency of the coupling of the heat from a heat source to a heat sink.

  15. Heating remote rooms in passive solar buildings

    SciTech Connect (OSTI)

    Balcomb, J.D.

    1981-01-01

    Remote rooms can be effectively heated by convection through a connecting doorway. A simple steady-state equation is developed for design purposes. Validation of a dynamic model is achieved using data obtained over a 13-day period. Dynamic effects are investigated using a simulation analysis for three different cases of driving temperature; the effect is to reduce the temperature difference between the driving room and the remote room compared to the steady-state model. For large temperature swings in the driving room a strategy which uses the intervening door in a diode mode is effective. The importance of heat-storing mass in the remote room is investigated.

  16. Tax Credits, Rebates & Savings | Department of Energy

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

    Construction, Industrial Savings Category: Dishwasher, Equipment Insulation, Water Heaters, Lighting, Lighting ControlsSensors, Chillers, Air conditioners, Heat...

  17. Tax Credits, Rebates & Savings | Department of Energy

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

    Daylighting, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Dehumidifiers, Ceiling Fan, Water Heaters, Furnaces, Boilers, Heat Pumps, Air conditioners, Caulking...

  18. Tax Credits, Rebates & Savings | Department of Energy

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

    Gas, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Dehumidifiers, Ceiling Fan, Lighting, Lighting ControlsSensors, Chillers, Heat Pumps, Air conditioners,...

  19. Tax Credits, Rebates & Savings | Department of Energy

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

    Category: Clothes Washers, Dishwasher, RefrigeratorsFreezers, Dehumidifiers, Ceiling Fan, Water Heaters, Lighting, Furnaces, Boilers, Heat Pumps, Air conditioners, Motors,...

  20. Tax Credits, Rebates & Savings | Department of Energy

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

    Category: Clothes Washers, Dishwasher, RefrigeratorsFreezers, Dehumidifiers, Ceiling Fan, Water Heaters, Lighting, Chillers, Furnaces, Boilers, Heat Pumps, Air conditioners,...

  1. Tax Credits, Rebates & Savings | Department of Energy

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

    Savings Category: Clothes Washers, Dishwasher, RefrigeratorsFreezers, Ceiling Fan, Lighting, Heat Pumps, Air conditioners, Programmable Thermostats, Windows, Other EE,...

  2. Tax Credits, Rebates & Savings | Department of Energy

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

    Dishwasher, RefrigeratorsFreezers, Equipment Insulation, Lighting, Lighting ControlsSensors, Heat Pumps, Air conditioners, Compressed air, Programmable Thermostats, Energy...

  3. Tax Credits, Rebates & Savings | Department of Energy

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

    efficient appliances, central AC,... Eligibility: Residential Savings Category: Clothes Washers, Dishwasher, RefrigeratorsFreezers, Dehumidifiers, Heat Pumps, Air...

  4. Tax Credits, Rebates & Savings | Department of Energy

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

    Rebates are... Eligibility: Residential Savings Category: Geothermal Heat Pumps, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Dehumidifiers, Water Heaters, Lighting,...

  5. Tax Credits, Rebates & Savings | Department of Energy

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

    freezers,... Eligibility: Residential, Low Income Residential Savings Category: Clothes Washers, Dishwasher, RefrigeratorsFreezers, Dehumidifiers, Water Heaters, Heat...

  6. Tax Credits, Rebates & Savings | Department of Energy

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

    property improvements. Its... Eligibility: Multifamily Residential Savings Category: Clothes Washers, Dishwasher, Dehumidifiers, Water Heaters, Lighting, Furnaces, Boilers, Heat...

  7. Tax Credits, Rebates & Savings | Department of Energy

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

    of energy efficient equipment and measures. Eligible equipment includes efficient clothes washers, dishwashers, refrigerators, freezers, lighting fixtures, heat pumps,...

  8. Tax Credits, Rebates & Savings | Department of Energy

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

    for central AC... Eligibility: Residential Savings Category: Geothermal Heat Pumps, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Dehumidifiers, Water Heaters, Lighting,...

  9. Tax Credits, Rebates & Savings | Department of Energy

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

    Residential, Multifamily Residential Savings Category: Geothermal Heat Pumps, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Dehumidifiers, Ceiling Fan, Water...

  10. Tax Credits, Rebates & Savings | Department of Energy

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

    Government, Agricultural, Institutional Savings Category: Geothermal Heat Pumps, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Equipment Insulation, Water Heaters,...

  11. Tax Credits, Rebates & Savings | Department of Energy

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

    Commercial, Industrial, Federal Government Savings Category: Geothermal Heat Pumps, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Dehumidifiers, Water Heaters, Lighting,...

  12. Tax Credits, Rebates & Savings | Department of Energy

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

    Government, Agricultural, Multifamily Residential, Institutional Savings Category: Solar Photovoltaics, Wind (All), Geothermal Heat Pumps, Clothes Washers, Dishwasher,...

  13. Tax Credits, Rebates & Savings | Department of Energy

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

    customers which implement HVAC, lighting, appliance, window, insulation and water heating upgrades. Eligible appliances include dishwashers, clothes washers, refrigerators,...

  14. Tax Credits, Rebates & Savings | Department of Energy

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

    Nonprofit, Residential, State Government, Federal Government Savings Category: Geothermal Heat Pumps, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Dehumidifiers,...

  15. Tax Credits, Rebates & Savings | Department of Energy

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

    and commercial customers to improve t... Eligibility: Residential Savings Category: Geothermal Heat Pumps, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Dehumidifiers,...

  16. Tax Credits, Rebates & Savings | Department of Energy

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

    Industrial, Local Government, Nonprofit, State Government, Federal Government Savings Category: Geothermal Heat Pumps, Dishwasher, Lighting, Lighting ControlsSensors,...

  17. Tax Credits, Rebates & Savings | Department of Energy

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

    Local Government, Nonprofit, State Government, Federal Government, Retail Supplier Savings Category: Geothermal Heat Pumps, Clothes Washers, Dishwasher, RefrigeratorsFreezers,...

  18. Tax Credits, Rebates & Savings | Department of Energy

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

    Program Energy Optimization Eligibility: Residential, Multifamily Residential Savings Category: Geothermal Heat Pumps, Clothes Washers, Dishwasher, RefrigeratorsFreezers,...

  19. Tax Credits, Rebates & Savings | Department of Energy

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

    Local Government, Schools, State Government, Federal Government, Tribal Government Savings Category: Geothermal Heat Pumps, Clothes Washers, Dishwasher, Water Heaters,...

  20. Tax Credits, Rebates & Savings | Department of Energy

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

    Eligibility: Commercial, State Government, Multifamily Residential, Institutional Savings Category: Geothermal Heat Pumps, Clothes Washers, Dishwasher, RefrigeratorsFreezers,...

  1. Tax Credits, Rebates & Savings | Department of Energy

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

    Minnesota residential customers which implement HVAC, lighting, appliance, window, insulation and water heating upgrades. Eligible appliances include dishwashers, clothes...

  2. Tax Credits, Rebates & Savings | Department of Energy

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

    Washers, Dishwasher, RefrigeratorsFreezers, Dehumidifiers, Heat Pumps, Air conditioners Reading Municipal Light Department- Residential Energy Star Appliance Rebate Program...

  3. Tax Credits, Rebates & Savings | Department of Energy

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

    residential customers which implement HVAC, lighting, appliance, window, insulation and water heating upgrades. Eligible appliances include dishwashers, clothes washers,...

  4. Tax Credits, Rebates & Savings | Department of Energy

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

    or invoice from retai... Eligibility: Residential Savings Category: Solar Water Heat, Solar Photovoltaics, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Air...

  5. Tax Credits, Rebates & Savings | Department of Energy

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

    Thermal, Daylighting, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Dehumidifiers, Water Heaters, Lighting, Heat Pumps, Air conditioners, Comprehensive MeasuresWhole...

  6. Tax Credits, Rebates & Savings | Department of Energy

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

    rebates for Minnesota residential customers which implement HVAC, lighting, appliance, window, insulation and water heating upgrades. Eligible appliances include dishwashers,...

  7. Development of a Thin-Wall Magnesium side door Inner Panel for Automobiles

    SciTech Connect (OSTI)

    Jekl, J.; Auld, J.; Sweet, C.; Carter, Jon; Resch, Steve; Klarner, A.; Brevick, J.; Luo, A.

    2015-05-17

    Cast magnesium side door inner panels can provide a good combination of weight, functional, manufacturing and economical requirements. However, several challenges exist including casting technology for thin-wall part design, multi-material incompatibility and relatively low strength vs steel. A project has been initiated, supported by the US Department of Energy, to design and develop a lightweight frame-under-glass door having a thin-wall, full die-cast, magnesium inner panel. This development project is the first of its kind within North America. Phase I of the project is now complete and the 2.0mm magnesium design, through casting process enablers, has met or exceeded all stiffness requirements, with significant mass reduction and part consolidation. In addition, a corrosion mitigation strategy has been established using industry-accepted galvanic isolation methods and coating technologies.

  8. List of Dishwasher Incentives | Open Energy Information

    Open Energy Info (EERE)

    Municipal Solid Waste Renewable Fuels Small Hydroelectric Wind Fuel Cells using Renewable Fuels Yes Alternative and Clean Energy State Grant Program (Pennsylvania) State Grant...

  9. Covered Product Category: Commercial Dishwashers | Department...

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

    product is available to meet the functional requirements, or that no such product is life cycle cost-effective for a specific application. Additional information on Federal...

  10. Solar Home Tour and Exhibitor Showcase Open Doors to Renewable Energy

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

    Information Solar Home Tour and Exhibitor Showcase Open Doors to Renewable Energy Information Golden, Colo., Oct. 4, 2001 - Since renovating his 2,700 square-foot 1950s style home to include such energy efficient features as passive cooling and an active solar collector that pumps warm air into the lower levels of the home, Steve Andrews has saved $1,000 each year in utility costs. To see how Andrews and 15 others are tapping into the energy of the sun, take the Denver Metro Tour of Solar

  11. Geothermal Heat Pumps- Heating Mode

    Broader source: Energy.gov [DOE]

    In winter, fluid passing through this vertical, closed loop system is warmed by the heat of the earth; this heat is then transferred to the building.

  12. Solar Power Ramp Events Detection Using an Optimized Swinging Door Algorithm: Preprint

    SciTech Connect (OSTI)

    Cui, Mingjian; Zhang, Jie; Florita, Anthony; Hodge, Bri-Mathias; Ke, Deping; Sun, Yuanzhang

    2015-08-07

    Solar power ramp events (SPREs) are those that significantly influence the integration of solar power on non-clear days and threaten the reliable and economic operation of power systems. Accurately extracting solar power ramps becomes more important with increasing levels of solar power penetrations in power systems. In this paper, we develop an optimized swinging door algorithm (OpSDA) to detection. First, the swinging door algorithm (SDA) is utilized to segregate measured solar power generation into consecutive segments in a piecewise linear fashion. Then we use a dynamic programming approach to combine adjacent segments into significant ramps when the decision thresholds are met. In addition, the expected SPREs occurring in clear-sky solar power conditions are removed. Measured solar power data from Tucson Electric Power is used to assess the performance of the proposed methodology. OpSDA is compared to two other ramp detection methods: the SDA and the L1-Ramp Detect with Sliding Window (L1-SW) method. The statistical results show the validity and effectiveness of the proposed method. OpSDA can significantly improve the performance of the SDA, and it can perform as well as or better than L1-SW with substantially less computation time.

  13. Tax Credits, Rebates & Savings | Department of Energy

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

    Category: Solar Water Heat, Solar Photovoltaics, Wind (All), Geothermal Heat Pumps, Solar Pool Heating, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Dehumidifiers,...

  14. Stable "superoxide" opens the door to a new class of batteries | Argonne

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

    National Laboratory The lattice match between LiO<sub>2</sub> and Ir<sub>3</sub>Li may be responsible for the LiO<sub>2</sub> discharge product found for the Ir-rGO cathode material. The lattice match between LiO2 and Ir3Li may be responsible for the LiO2 discharge product found for the Ir-rGO cathode material. Stable "superoxide" opens the door to a new class of batteries By Jared Sagoff * January 12, 2016 Tweet EmailPrint While lithium-ion

  15. Optimized Swinging Door Algorithm for Wind Power Ramp Event Detection: Preprint

    SciTech Connect (OSTI)

    Cui, Mingjian; Zhang, Jie; Florita, Anthony R.; Hodge, Bri-Mathias; Ke, Deping; Sun, Yuanzhang

    2015-08-06

    Significant wind power ramp events (WPREs) are those that influence the integration of wind power, and they are a concern to the continued reliable operation of the power grid. As wind power penetration has increased in recent years, so has the importance of wind power ramps. In this paper, an optimized swinging door algorithm (SDA) is developed to improve ramp detection performance. Wind power time series data are segmented by the original SDA, and then all significant ramps are detected and merged through a dynamic programming algorithm. An application of the optimized SDA is provided to ascertain the optimal parameter of the original SDA. Measured wind power data from the Electric Reliability Council of Texas (ERCOT) are used to evaluate the proposed optimized SDA.

  16. Generalized Information Architecture for Managing Requirements in IBM?s Rational DOORS(r) Application.

    SciTech Connect (OSTI)

    Aragon, Kathryn M.; Eaton, Shelley M.; McCornack, Marjorie T.; Shannon, Sharon A.

    2014-12-01

    When a requirements engineering effort fails to meet expectations, often times the requirements management tool is blamed. Working with numerous project teams at Sandia National Laboratories over the last fifteen years has shown us that the tool is rarely the culprit; usually it is the lack of a viable information architecture with well- designed processes to support requirements engineering. This document illustrates design concepts with rationale, as well as a proven information architecture to structure and manage information in support of requirements engineering activities for any size or type of project. This generalized information architecture is specific to IBM's Rational DOORS (Dynamic Object Oriented Requirements System) software application, which is the requirements management tool in Sandia's CEE (Common Engineering Environment). This generalized information architecture can be used as presented or as a foundation for designing a tailored information architecture for project-specific needs. It may also be tailored for another software tool. Version 1.0 4 November 201

  17. Susanville District Heating District Heating Low Temperature...

    Open Energy Info (EERE)

    Susanville District Heating District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Susanville District Heating District Heating Low Temperature...

  18. 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...

  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* ... 1,870 1,276...

  20. 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...

  1. 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...

  2. 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...

  3. Tax Credits, Rebates & Savings | Department of Energy

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

    Category: Geothermal Heat Pumps, Dishwasher, Dehumidifiers, Lighting, Lighting ControlsSensors, Chillers, Heat Pumps, Air conditioners, Motors, CustomOthers pending approval,...

  4. Tax Credits, Rebates & Savings | Department of Energy

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

    Hydroelectric, Geothermal Heat Pumps, Municipal Solid Waste, Combined Heat & Power, Fuel Cells using Non-Renewable Fuels, Landfill Gas, Clothes Washers, Dishwasher,...

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

    Broader source: Energy.gov [DOE]

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

  6. Tax Credits, Rebates & Savings | Department of Energy

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

    and commercial members for purchasing energy efficient add-on heat pumps, geothermal heat pumps, water heaters, dishwashers... Eligibility: Commercial, Residential...

  7. Tax Credits, Rebates & Savings | Department of Energy

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

    Geothermal Heat Pumps, Municipal Solid Waste, Combined Heat & Power, Fuel Cells using Non-Renewable Fuels, Landfill Gas, Clothes Washers, Dishwasher, Refrigerators...

  8. Tax Credits, Rebates & Savings | Department of Energy

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

    heat sources. Customers seeking rebates for central AC... Eligibility: Residential Savings Category: Geothermal Heat Pumps, Clothes Washers, Dishwasher, RefrigeratorsFreezers,...

  9. Tax Credits, Rebates & Savings | Department of Energy

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

    Category: Solar - Passive, Solar Space Heat, Solar Thermal Electric, Solar Thermal Process Heat, Solar Photovoltaics, Wind (All), Clothes Washers, Dishwasher, Refrigerators...

  10. Tax Credits, Rebates & Savings | Department of Energy

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

    Biomass, Hydroelectric, Geothermal Heat Pumps, Municipal Solid Waste, Combined Heat & Power, Fuel Cells using Non-Renewable Fuels, Landfill Gas, Clothes Washers, Dishwasher,...

  11. Tax Credits, Rebates & Savings | Department of Energy

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

    Heat Pumps, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Equipment Insulation, Water Heaters, Lighting, Lighting ControlsSensors, Furnaces, Boilers, Heat Pumps, Air...

  12. Long-Term Monitoring of Mini-Split Ductless Heat Pumps in the Northeast

    SciTech Connect (OSTI)

    Ueno, K.; Loomis, H.

    2015-06-01

    Transformations, Inc. has extensive experience building their high performance housing at a variety of Massachusetts locations, in both a production and custom home setting. The majority of their construction uses mini-split heat pumps (MSHPs) for space conditioning. This research covered the long-term performance of MSHPs in Zone 5A; it is the culmination of up to 3 years' worth of monitoring in a set of eight houses. This research examined electricity use of MSHPs, distributions of interior temperatures and humidity when using simplified (two-point) heating systems in high-performance housing, and the impact of open-door/closed-door status on temperature distributions. The use of simplified space conditioning distribution (through use of MSHPs) provides significant first cost savings, which are used to offset the increased investment in the building enclosure.

  13. Heat collector

    DOE Patents [OSTI]

    Merrigan, Michael A. (Santa Cruz, NM)

    1984-01-01

    A heat collector and method suitable for efficiently and cheaply collecting solar and other thermal energy are provided. The collector employs a heat pipe in a gravity-assist mode and is not evacuated. The collector has many advantages, some of which include ease of assembly, reduced structural stresses on the heat pipe enclosure, and a low total materials cost requirement. Natural convective forces drive the collector, which after startup operates entirely passively due in part to differences in molecular weights of gaseous components within the collector.

  14. Heat collector

    DOE Patents [OSTI]

    Merrigan, M.A.

    1981-06-29

    A heat collector and method suitable for efficiently and cheaply collecting solar and other thermal energy are provided. The collector employs a heat pipe in a gravity-assist mode and is not evacuated. The collector has many advantages, some of which include ease of assembly, reduced structural stresses on the heat pipe enclosure, and a low total materials cost requirement. Natural convective forces drive the collector, which after startup operates entirely passively due in part to differences in molecular weights of gaseous components within the collector.

  15. Corrosive resistant heat exchanger

    DOE Patents [OSTI]

    Richlen, Scott L. (Annandale, VA)

    1989-01-01

    A corrosive and errosive resistant heat exchanger which recovers heat from a contaminated heat stream. The heat exchanger utilizes a boundary layer of innocuous gas, which is continuously replenished, to protect the heat exchanger surface from the hot contaminated gas. The innocuous gas is conveyed through ducts or perforations in the heat exchanger wall. Heat from the heat stream is transferred by radiation to the heat exchanger wall. Heat is removed from the outer heat exchanger wall by a heat recovery medium.

  16. 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...

  17. PIA - Northeast Home Heating Oil Reserve System (Heating Oil...

    Energy Savers [EERE]

    Northeast Home Heating Oil Reserve System (Heating Oil) PIA - Northeast Home Heating Oil Reserve System (Heating Oil) PIA - Northeast Home Heating Oil Reserve System (Heating Oil)...

  18. Check Heat Transfer Surfaces

    Broader source: Energy.gov [DOE]

    This tip sheet discusses the importance of checking heat transfer surfaces in process heating systems.

  19. Absorption Heat Pump Basics

    Broader source: Energy.gov [DOE]

    Absorption heat pumps are essentially air-source heat pumps driven not by electricity, but by a heat source such as natural gas, propane, solar-heated water, or geothermal-heated water. Because natural gas is the most common heat source for absorption heat pumps, they are also referred to as gas-fired heat pumps.

  20. Bayonet heat exchangers in heat-assisted Stirling heat pump

    SciTech Connect (OSTI)

    Yagyu, S.; Fukuyama, Y.; Morikawa, T.; Isshiki, N.; Satoh, I.; Corey, J.; Fellows, C.

    1998-07-01

    The Multi-Temperature Heat Supply System is a research project creating a city energy system with lower environmental load. This system consists of a gas-fueled internal combustion engine and a heat-assisted Stirling heat pump utilizing shaft power and thermal power in a combination of several cylinders. The heat pump is mainly driven by engine shaft power and is partially assisted by thermal power from engine exhaust heat source. Since this heat pump is operated by proportioning the two energy sources to match the characteristics of the driving engine, the system is expected to produce cooling and heating water at high COP. This paper describes heat exchanger development in the project to develop a heat-assisted Stirling heat pump. The heat pump employs the Bayonet type heat exchangers (BHX Type I) for supplying cold and hot water and (BHX Type II) for absorbing exhaust heat from the driving engine. The heat exchanger design concepts are presented and their heat transfer and flow loss characteristics in oscillating gas flow are investigated. The main concern in the BHX Type I is an improvement of gas side heat transfer and the spirally finned tubes were applied to gas side of the heat exchanger. For the BHX Type II, internal heat transfer characteristics are the main concern. Shell-and-tube type heat exchangers are widely used in Stirling machines. However, since brazing is applied to the many tubes for their manufacturing processes, it is very difficult to change flow passages to optimize heat transfer and loss characteristics once they have been made. The challenge was to enhance heat transfer on the gas side to make a highly efficient heat exchanger with fewer parts. It is shown that the Bayonet type heat exchanger can have good performance comparable to conventional heat exchangers.

  1. Tax Credits, Rebates & Savings | Department of Energy

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

    Non-Renewable Fuels, Landfill Gas, Tidal, Wave, Ocean Thermal, Daylighting, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Dehumidifiers, Water Heaters, Lighting, Heat...

  2. Tax Credits, Rebates & Savings | Department of Energy

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

    Combined Heat & Power, Fuel Cells using Non-Renewable Fuels, Landfill Gas, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Dehumidifiers, Ceiling Fan, Lighting, Lighting...

  3. Tax Credits, Rebates & Savings | Department of Energy

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

    Residential Savings Category: Clothes Washers, Dishwasher, RefrigeratorsFreezers, Water Heaters, Lighting, Heat Pumps, Air conditioners, DuctAir sealing, Building...

  4. Tax Credits, Rebates & Savings | Department of Energy

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

    Dishwasher, RefrigeratorsFreezers, Equipment Insulation, Water Heaters, Lighting, Heat Pumps, Air conditioners, DuctAir sealing, Building Insulation, Windows, Custom...

  5. Tax Credits, Rebates & Savings | Department of Energy

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

    Clothes Washers, Dishwasher, RefrigeratorsFreezers, Equipment Insulation, Water Heaters, Heat Pumps, Air conditioners, CaulkingWeather-stripping, DuctAir sealing, Building...

  6. Hutchinson Utilities Commission - Residential Energy Efficiency...

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

    200ton Mini SplitDuctless Air Source Heat Pump: 250 Clothes Washers: 50 Clothes Dryer: 80 Refrigerators: 65 Dishwashers: 20 - 50 (with recycling of older unit)...

  7. Tax Credits, Rebates & Savings | Department of Energy

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

    Daylighting, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Dehumidifiers, Ceiling Fan, Water Heaters, Lighting, Lighting ControlsSensors, Chillers, Furnaces, Boilers, Heat...

  8. Tax Credits, Rebates & Savings | Department of Energy

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

    Landfill Gas, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Dehumidifiers, Ceiling Fan, Lighting, Lighting ControlsSensors, Chillers, Heat Pumps, Air conditioners,...

  9. Tax Credits, Rebates & Savings | Department of Energy

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

    Landfill Gas, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Dehumidifiers, Ceiling Fan, Water Heaters, Lighting, Lighting ControlsSensors, Chillers, Furnaces, Boilers, Heat...

  10. Tax Credits, Rebates & Savings | Department of Energy

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

    Savings Category: Clothes Washers, Dishwasher, RefrigeratorsFreezers, Ceiling Fan, Water Heaters, Lighting, Heat Pumps, Air conditioners, DuctAir sealing, Building...

  11. Tax Credits, Rebates & Savings | Department of Energy

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

    Clothes Washers, Dishwasher, Dehumidifiers, Water Heaters, Lighting, Lighting ControlsSensors, Chillers, Furnaces, Boilers, Heat Pumps, Air conditioners, Steam-system upgrades,...

  12. Tax Credits, Rebates & Savings | Department of Energy

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

    Geothermal Heat Pumps, Municipal Solid Waste, Fuel Cells using Non-Renewable Fuels, Landfill Gas, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Dehumidifiers,...

  13. Tax Credits, Rebates & Savings | Department of Energy

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

    Waste, Combined Heat & Power, Fuel Cells using Non-Renewable Fuels, Landfill Gas, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Dehumidifiers, Ceiling Fan, Lighting,...

  14. Tax Credits, Rebates & Savings | Department of Energy

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

    Heat Pumps, Municipal Solid Waste, Fuel Cells using Non-Renewable Fuels, Landfill Gas, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Dehumidifiers, Ceiling Fan, Equipment...

  15. Tax Credits, Rebates & Savings | Department of Energy

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

    rebates are offered in conjunction with... Eligibility: Residential Savings Category: Clothes Washers, Dishwasher, RefrigeratorsFreezers, Water Heaters, Heat Pumps, Air...

  16. Tax Credits, Rebates & Savings | Department of Energy

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

    through these programs, residents... Eligibility: Residential Savings Category: Clothes Washers, Dishwasher, RefrigeratorsFreezers, Water Heaters, Heat Pumps, DuctAir...

  17. Tax Credits, Rebates & Savings | Department of Energy

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

    the energy efficiency of homes. Rebates are available for qualified dishwashers, clothes washers, air conditioners (central and room), lighting, heat pumps (air-source and...

  18. Tax Credits, Rebates & Savings | Department of Energy

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

    lighting, air-source heat pumps, central AC, freezers and refrigerators, dishwashers, clothes washers, and dehumidifiers. All rebate applications must include a receipt that...

  19. Tips: Kitchen Appliances | Department of Energy

    Office of Environmental Management (EM)

    that came with your dishwasher for the manufacturer's recommendations on water temperature; many have internal heating elements that allow you to set the water heater in your...

  20. Tax Credits, Rebates & Savings | Department of Energy

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

    sa... Eligibility: Investor-Owned Utility, Retail Supplier Savings Category: Combined Heat & Power, Dishwasher, RefrigeratorsFreezers, Lighting, Lighting ControlsSensors,...

  1. Tax Credits, Rebates & Savings | Department of Energy

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

    Wind (All), Biomass, Hydroelectric, Geothermal Heat Pumps, Municipal Solid Waste, Fuel Cells using Non-Renewable Fuels, Landfill Gas, Clothes Washers, Dishwasher,...

  2. Pacific Power - Residential Energy Efficiency Rebate Programs...

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

    up to 35 Dishwasher: 20 Freezer: 20 Room Air Conditioner: 25 Water Heaters: 75 Heat Pump Water Heater: 150 Refrigerator Recycling: 30 Central Air Conditioning: 250...

  3. Tax Credits, Rebates & Savings | Department of Energy

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

    Photovoltaics, Wind (All), Biomass, Hydroelectric, Geothermal Heat Pumps, Municipal Solid Waste, Fuel Cells using Non-Renewable Fuels, Landfill Gas, Clothes Washers, Dishwasher,...

  4. Tax Credits, Rebates & Savings | Department of Energy

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

    Dishwasher, RefrigeratorsFreezers, Dehumidifiers, Water Heaters, Lighting, Heat Pumps, Air conditioners, Comprehensive MeasuresWhole Building, Other EE, Wind (Small),...

  5. AEO2015 BWG

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

    of "other" electricity use (high, low, approach?) - referencesresearch on approaches to incorporating water heating interactions for residential clothes washers and dishwashers ...

  6. Tax Credits, Rebates & Savings | Department of Energy

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

    Rebates are provided for Eligibility: Commercial Savings Category: Clothes Washers, Dishwasher, RefrigeratorsFreezers, Lighting, Lighting ControlsSensors, Chillers, Heat Pumps,...

  7. Tax Credits, Rebates & Savings | Department of Energy

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

    Star appliances,... Eligibility: Residential Savings Category: Clothes Washers, Dishwasher, RefrigeratorsFreezers, Ceiling Fan, Heat Pumps, Air conditioners, DuctAir...

  8. Tax Credits, Rebates & Savings | Department of Energy

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

    programs, residents... Eligibility: Residential Savings Category: Clothes Washers, Dishwasher, RefrigeratorsFreezers, Water Heaters, Heat Pumps, DuctAir sealing, Building...

  9. Tax Credits, Rebates & Savings | Department of Energy

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

    InstallersContractors, Multifamily Residential Savings Category: Clothes Washers, Dishwasher, RefrigeratorsFreezers, Ceiling Fan, Water Heaters, Lighting, Heat Pumps, Air...

  10. Tax Credits, Rebates & Savings | Department of Energy

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

    Residential Savings Category: Fuel Cells using Non-Renewable Fuels, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Water Heaters, Furnaces, Boilers, Heat Pumps, Air...

  11. Effects of Feedback on Residential Electricity Consumption: A...

    Office of Scientific and Technical Information (OSTI)

    none of which were elec- trically heated; each had an electric stove, dryer, dishwasher, and water heater. The researchers installed 24-h chart recorders in each residence...

  12. Tax Credits, Rebates & Savings | Department of Energy

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

    Heat & Power, Fuel Cells using Non-Renewable Fuels, Landfill Gas, Clothes Washers, Dishwasher, RefrigeratorsFreezers, Dehumidifiers, Ceiling Fan, Lighting, Lighting Controls...

  13. Tax Credits, Rebates & Savings | Department of Energy

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

    are available for qualified dishwashers, clothes washers, air conditioners (central and room), lighting, heat pumps (air-source and geothermal),... Eligibility: Residential Savings...

  14. Heat pump system

    DOE Patents [OSTI]

    Swenson, Paul F. (Cleveland, OH); Moore, Paul B. (Fedhaurn, FL)

    1982-01-01

    An air heating and cooling system for a building includes an expansion-type refrigeration circuit and a heat engine. The refrigeration circuit includes two heat exchangers, one of which is communicated with a source of indoor air from the building and the other of which is communicated with a source of air from outside the building. The heat engine includes a heat rejection circuit having a source of rejected heat and a primary heat exchanger connected to the source of rejected heat. The heat rejection circuit also includes an evaporator in heat exchange relation with the primary heat exchanger, a heat engine indoor heat exchanger, and a heat engine outdoor heat exchanger. The indoor heat exchangers are disposed in series air flow relationship, with the heat engine indoor heat exchanger being disposed downstream from the refrigeration circuit indoor heat exchanger. The outdoor heat exchangers are also disposed in series air flow relationship, with the heat engine outdoor heat exchanger disposed downstream from the refrigeration circuit outdoor heat exchanger. A common fluid is used in both of the indoor heat exchanges and in both of the outdoor heat exchangers. In a first embodiment, the heat engine is a Rankine cycle engine. In a second embodiment, the heat engine is a non-Rankine cycle engine.

  15. Heat exchanger

    DOE Patents [OSTI]

    Brackenbury, P.J.

    1983-12-08

    A heat exchanger comparising a shell attached at its open end to one side of a tube sheet and a detachable head connected to the other side of said tube sheet. The head is divided into a first and second chamber in fluid communication with a nozzle inlet and nozzle outlet, respectively, formed in said tube sheet. A tube bundle is mounted within said shell and is provided with inlets and outlets formed in said tube sheet in communication with said first and second chambers, respectively.

  16. Heat exchanger

    DOE Patents [OSTI]

    Brackenbury, Phillip J.

    1986-01-01

    A heat exchanger comparising a shell attached at its open end to one side of a tube sheet and a detachable head connected to the other side of said tube sheet. The head is divided into a first and second chamber in fluid communication with a nozzle inlet and nozzle outlet, respectively, formed in said tube sheet. A tube bundle is mounted within said shell and is provided with inlets and outlets formed in said tube sheet in communication with said first and second chambers, respectively.

  17. Heat transfer and heat exchangers reference handbook

    SciTech Connect (OSTI)

    Not Available

    1991-01-15

    The purpose of this handbook is to provide Rocky Flats personnel with an understanding of the basic concepts of heat transfer and the operation of heat exchangers.

  18. Heating systems for heating subsurface formations

    DOE Patents [OSTI]

    Nguyen, Scott Vinh (Houston, TX); Vinegar, Harold J. (Bellaire, TX)

    2011-04-26

    Methods and systems for heating a subsurface formation are described herein. A heating system for a subsurface formation includes a sealed conduit positioned in an opening in the formation and a heat source. The sealed conduit includes a heat transfer fluid. The heat source provides heat to a portion of the sealed conduit to change phase of the heat transfer fluid from a liquid to a vapor. The vapor in the sealed conduit rises in the sealed conduit, condenses to transfer heat to the formation and returns to the conduit portion as a liquid.

  19. Dual source heat pump

    DOE Patents [OSTI]

    Ecker, Amir L.; Pietsch, Joseph A.

    1982-01-01

    What is disclosed is a heat pump apparatus for conditioning a fluid characterized by a fluid handler and path for circulating the fluid in heat exchange relationship with a refrigerant fluid; at least two refrigerant heat exchangers, one for effecting heat exchange with the fluid and a second for effecting heat exchange between refrigerant and a heat exchange fluid and the ambient air; a compressor for efficiently compressing the refrigerant; at least one throttling valve for throttling liquid refrigerant; a refrigerant circuit; refrigerant; a source of heat exchange fluid; heat exchange fluid circulating device and heat exchange fluid circuit for circulating the heat exchange fluid in heat exchange relationship with the refrigerant; and valves or switches for selecting the heat exchangers and direction of flow of the refrigerant therethrough for selecting a particular mode of operation. The heat exchange fluid provides energy for defrosting the second heat exchanger when operating in the air source mode and also provides a alternate source of heat.

  20. Segmented heat exchanger

    DOE Patents [OSTI]

    Baldwin, Darryl Dean (Lafayette, IN); Willi, Martin Leo (Dunlap, IL); Fiveland, Scott Byron (Metamara, IL); Timmons, Kristine Ann (Chillicothe, IL)

    2010-12-14

    A segmented heat exchanger system for transferring heat energy from an exhaust fluid to a working fluid. The heat exchanger system may include a first heat exchanger for receiving incoming working fluid and the exhaust fluid. The working fluid and exhaust fluid may travel through at least a portion of the first heat exchanger in a parallel flow configuration. In addition, the heat exchanger system may include a second heat exchanger for receiving working fluid from the first heat exchanger and exhaust fluid from a third heat exchanger. The working fluid and exhaust fluid may travel through at least a portion of the second heat exchanger in a counter flow configuration. Furthermore, the heat exchanger system may include a third heat exchanger for receiving working fluid from the second heat exchanger and exhaust fluid from the first heat exchanger. The working fluid and exhaust fluid may travel through at least a portion of the third heat exchanger in a parallel flow configuration.

  1. Technology Solutions Case Study: Long-Term Monitoring of Mini-Split Ductless Heat Pumps in the Northeast, Devens and Easthampton, Massachusetts

    SciTech Connect (OSTI)

    2015-07-01

    Transformations, Inc., has extensive experience building high-performance homes - production and custom - in a variety of Massachusetts locations and uses mini-split heat pumps (MSHPs) for space conditioning in most of its homes. The use of MSHPs for simplified space-conditioning distribution provides significant first-cost savings, which offsets the increased investment in the building enclosure. In this project, the U.S. Department of Energy Building America team Building Science Corporation evaluated the long-term performance of MSHPs in 8 homes during a period of 3 years. The work examined electrical use of MSHPs, distributions of interior temperatures and humidity when using simplified (two-point) heating systems in high-performance housing, and the impact of open-door/closed-door status on temperature distributions.

  2. Multiple source heat pump

    DOE Patents [OSTI]

    Ecker, Amir L. (Duncanville, TX)

    1983-01-01

    A heat pump apparatus for conditioning a fluid characterized by a fluid handler and path for circulating a fluid in heat exchange relationship with a refrigerant fluid, at least three refrigerant heat exchangers, one for effecting heat exchange with the fluid, a second for effecting heat exchange with a heat exchange fluid, and a third for effecting heat exchange with ambient air; a compressor for compressing the refrigerant; at least one throttling valve connected at the inlet side of a heat exchanger in which liquid refrigerant is vaporized; a refrigerant circuit; refrigerant; a source of heat exchange fluid; heat exchange fluid circuit and pump for circulating the heat exchange fluid in heat exchange relationship with the refrigerant; and valves or switches for selecting the heat exchangers and directional flow of refrigerant therethrough for selecting a particular mode of operation. Also disclosed are a variety of embodiments, modes of operation, and schematics therefor.

  3. 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. |...

  4. Concentrating solar heat collector

    SciTech Connect (OSTI)

    Fattor, A.P.

    1980-09-23

    A heat storage unit is integrated with a collection unit providing a heat supply in off-sun times, and includes movable insulation means arranged to provide insulation during off-sun times for the heat storage unit.

  5. Absorption heat pump system

    DOE Patents [OSTI]

    Grossman, Gershon (Oak Ridge, TN)

    1984-01-01

    The efficiency of an absorption heat pump system is improved by conducting liquid from a second stage evaporator thereof to an auxiliary heat exchanger positioned downstream of a primary heat exchanger in the desorber of the system.

  6. Absorption heat pump system

    DOE Patents [OSTI]

    Grossman, G.

    1982-06-16

    The efficiency of an absorption heat pump system is improved by conducting liquid from a second stage evaporator thereof to an auxiliary heat exchanger positioned downstream of a primary heat exchanger in the desorber of the system.

  7. Residential heating oil price

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

    heating oil price decreases The average retail price for home heating oil fell 4.1 cents from a week ago to 2.89 per gallon, based on the residential heating fuel survey by the...

  8. Kethcum District Heating District Heating Low Temperature Geothermal...

    Open Energy Info (EERE)

    Kethcum District Heating District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Kethcum District Heating District Heating Low Temperature Geothermal...

  9. Midland District Heating District Heating Low Temperature Geothermal...

    Open Energy Info (EERE)

    Midland District Heating District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Midland District Heating District Heating Low Temperature Geothermal...

  10. Philip District Heating District Heating Low Temperature Geothermal...

    Open Energy Info (EERE)

    Philip District Heating District Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Philip District Heating District Heating Low Temperature Geothermal...

  11. Pagosa Springs District Heating District Heating Low Temperature...

    Open Energy Info (EERE)

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

  12. Woven heat exchanger

    DOE Patents [OSTI]

    Piscitella, R.R.

    1984-07-16

    This invention relates to a heat exchanger for waste heat recovery from high temperature industrial exhaust streams. In a woven ceramic heat exchanger using the basic tube-in-shell design, each heat exchanger consisting of tube sheets and tube, is woven separately. Individual heat exchangers are assembled in cross-flow configuration. Each heat exchanger is woven from high temperature ceramic fiber, the warp is continuous from tube to tube sheet providing a smooth transition and unitized construction.

  13. Total Space Heat-

    Gasoline and Diesel Fuel Update (EIA)

    Commercial Buildings Energy Consumption Survey: Energy End-Use Consumption Tables Total Space Heat- ing Cool- ing Venti- lation Water Heat- ing Light- ing Cook- ing Refrig- eration...

  14. Waste Heat Recovery

    Office of Environmental Management (EM)

    DRAFT - PRE-DECISIONAL - DRAFT 1 Waste Heat Recovery 1 Technology Assessment 2 Contents 3 ... 2 4 1.1. Introduction to Waste Heat Recovery ......

  15. Total Space Heat-

    Gasoline and Diesel Fuel Update (EIA)

    Revised: December, 2008 Total Space Heat- ing Cool- ing Venti- lation Water Heat- ing Light- ing Cook- ing Refrig- eration Office Equip- ment Com- puters Other All Buildings...

  16. Total Space Heat-

    Gasoline and Diesel Fuel Update (EIA)

    Released: September, 2008 Total Space Heat- ing Cool- ing Venti- lation Water Heat- ing Light- ing Cook- ing Refrig- eration Office Equip- ment Com- puters Other All Buildings*...

  17. Guide to Geothermal Heat Pumps

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

    among the most effcient and comfortable heating and cooling technologies available because they use the earth's natural heat to provide heating, cooling, and often, water heating. ...

  18. Rotary magnetic heat pump

    DOE Patents [OSTI]

    Kirol, Lance D. (Shelly, ID)

    1988-01-01

    A rotary magnetic heat pump constructed without flow seals or segmented rotor accomplishes recuperation and regeneration by using split flow paths. Heat exchange fluid pumped through heat exchangers and returned to the heat pump splits into two flow components: one flowing counter to the rotor rotation and one flowing with the rotation.

  19. Rotary magnetic heat pump

    DOE Patents [OSTI]

    Kirol, L.D.

    1987-02-11

    A rotary magnetic heat pump constructed without flow seals or segmented rotor accomplishes recuperation and regeneration by using split flow paths. Heat exchange fluid pumped through heat exchangers and returned to the heat pump splits into two flow components: one flowing counter to the rotor rotation and one flowing with the rotation. 5 figs.

  20. Direct fired heat exchanger

    DOE Patents [OSTI]

    Reimann, Robert C. (Lafayette, NY); Root, Richard A. (Spokane, WA)

    1986-01-01

    A gas-to-liquid heat exchanger system which transfers heat from a gas, generally the combustion gas of a direct-fired generator of an absorption machine, to a liquid, generally an absorbent solution. The heat exchanger system is in a counterflow fluid arrangement which creates a more efficient heat transfer.

  1. PIA - Northeast Home Heating Oil Reserve System (Heating Oil) | Department

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

    of Energy Northeast Home Heating Oil Reserve System (Heating Oil) PIA - Northeast Home Heating Oil Reserve System (Heating Oil) PIA - Northeast Home Heating Oil Reserve System (Heating Oil) PDF icon PIA - Northeast Home Heating Oil Reserve System (Heating Oil) More Documents & Publications PIA - WEB Physical Security Major Application PIA - GovTrip (DOE data) PIA - WEB Unclassified Business Operations General Support

  2. Heat Treating Apparatus

    DOE Patents [OSTI]

    De Saro, Robert (Annandale, NJ); Bateman, Willis (Sutton Colfield, GB)

    2002-09-10

    Apparatus for heat treating a heat treatable material including a housing having an upper opening for receiving a heat treatable material at a first temperature, a lower opening, and a chamber therebetween for heating the heat treatable material to a second temperature higher than the first temperature as the heat treatable material moves through the chamber from the upper to the lower opening. A gas supply assembly is operatively engaged to the housing at the lower opening, and includes a source of gas, a gas delivery assembly for delivering the gas through a plurality of pathways into the housing in countercurrent flow to movement of the heat treatable material, whereby the heat treatable material passes through the lower opening at the second temperature, and a control assembly for controlling conditions within the chamber to enable the heat treatable material to reach the second temperature and pass through the lower opening at the second temperature as a heated material.

  3. Thulium-170 heat source

    DOE Patents [OSTI]

    Walter, Carl E. (Pleasanton, CA); Van Konynenburg, Richard (Livermore, CA); VanSant, James H. (Tracy, CA)

    1992-01-01

    An isotopic heat source is formed using stacks of thin individual layers of a refractory isotopic fuel, preferably thulium oxide, alternating with layers of a low atomic weight diluent, preferably graphite. The graphite serves several functions: to act as a moderator during neutron irradiation, to minimize bremsstrahlung radiation, and to facilitate heat transfer. The fuel stacks are inserted into a heat block, which is encased in a sealed, insulated and shielded structural container. Heat pipes are inserted in the heat block and contain a working fluid. The heat pipe working fluid transfers heat from the heat block to a heat exchanger for power conversion. Single phase gas pressure controls the flow of the working fluid for maximum heat exchange and to provide passive cooling.

  4. Thermoelectric heat exchange element

    DOE Patents [OSTI]

    Callas, James J. (Peoria, IL); Taher, Mahmoud A. (Peoria, IL)

    2007-08-14

    A thermoelectric heat exchange module includes a first substrate including a heat receptive side and a heat donative side and a series of undulatory pleats. The module may also include a thermoelectric material layer having a ZT value of 1.0 or more disposed on at least one of the heat receptive side and the heat donative side, and an electrical contact may be in electrical communication with the thermoelectric material layer.

  5. 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,

  6. Heat transfer system

    DOE Patents [OSTI]

    McGuire, Joseph C. (Richland, WA)

    1982-01-01

    A heat transfer system for a nuclear reactor. Heat transfer is accomplished within a sealed vapor chamber which is substantially evacuated prior to use. A heat transfer medium, which is liquid at the design operating temperatures, transfers heat from tubes interposed in the reactor primary loop to spaced tubes connected to a steam line for power generation purposes. Heat transfer is accomplished by a two-phase liquid-vapor-liquid process as used in heat pipes. Condensible gases are removed from the vapor chamber through a vertical extension in open communication with the chamber interior.

  7. Wound tube heat exchanger

    DOE Patents [OSTI]

    Ecker, Amir L. (Duncanville, TX)

    1983-01-01

    What is disclosed is a wound tube heat exchanger in which a plurality of tubes having flattened areas are held contiguous adjacent flattened areas of tubes by a plurality of windings to give a double walled heat exchanger. The plurality of windings serve as a plurality of effective force vectors holding the conduits contiguous heat conducting walls of another conduit and result in highly efficient heat transfer. The resulting heat exchange bundle is economical and can be coiled into the desired shape. Also disclosed are specific embodiments such as the one in which the tubes are expanded against their windings after being coiled to insure highly efficient heat transfer.

  8. Heat transfer system

    DOE Patents [OSTI]

    Not Available

    1980-03-07

    A heat transfer system for a nuclear reactor is described. Heat transfer is accomplished within a sealed vapor chamber which is substantially evacuated prior to use. A heat transfer medium, which is liquid at the design operating temperatures, transfers heat from tubes interposed in the reactor primary loop to spaced tubes connected to a steam line for power generation purposes. Heat transfer is accomplished by a two-phase liquid-vapor-liquid process as used in heat pipes. Condensible gases are removed from the vapor chamber through a vertical extension in open communication with the chamber interior.

  9. The doors were officially

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

    ... Covering your mouth and nose with a tissue when you sneeze or cough will go a long way to decreasing the amount of infected droplets spread to others. Also stay away from those who ...

  10. Fusion heating technology

    SciTech Connect (OSTI)

    Cole, A.J.

    1982-06-01

    John Lawson established the criterion that in order to produce more energy from fusion than is necessary to heat the plasma and replenish the radiation losses, a minimum value for both the product of plasma density and confinement time t, and the temperature must be achieved. There are two types of plasma heating: neutral beam and electromagnetic wave heating. A neutral beam system is shown. Main development work on negative ion beamlines has focused on the difficult problem of the production of high current sources. The development of a 30 keV-1 ampere multisecond source module is close to being accomplished. In electromagnetic heating, the launcher, which provides the means of coupling the power to the plasma, is most important. The status of heating development is reviewed. Electron cyclotron resonance heating (ECRH), lower hybrid heating (HHH), and ion cyclotron resonance heating (ICRH) are reviewed.

  11. Geothermal District Heating Economics

    Energy Science and Technology Software Center (OSTI)

    1995-07-12

    GEOCITY is a large-scale simulation model which combines both engineering and economic submodels to systematically calculate the cost of geothermal district heating systems for space heating, hot-water heating, and process heating based upon hydrothermal geothermal resources. The GEOCITY program simulates the entire production, distribution, and waste disposal process for geothermal district heating systems, but does not include the cost of radiators, convectors, or other in-house heating systems. GEOCITY calculates the cost of district heating basedmore » on the climate, population, and heat demand of the district; characteristics of the geothermal resource and distance from the distribution center; well-drilling costs; design of the distribution system; tax rates; and financial conditions.« less

  12. Total Space Heat-

    Gasoline and Diesel Fuel Update (EIA)

    Survey: Energy End-Use Consumption Tables Total Space Heat- ing Cool- ing Venti- lation Water Heat- ing Light- ing Cook- ing Refrig- eration Office Equip- ment Com- puters Other...

  13. Residential heating oil price

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

    heating oil price decreases The average retail price for home heating oil fell 3.6 cents from a week ago to 3.04 per gallon. That's down 99.4 cents from a year ago, based on the...

  14. Residential heating oil price

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

    heating oil price decreases The average retail price for home heating oil fell 6.3 cents from a week ago to 2.91 per gallon. That's down 1.10 from a year ago, based on the...

  15. Residential heating oil price

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

    heating oil price decreases The average retail price for home heating oil fell 7.5 cents from a week ago to 2.84 per gallon. That's down 1.22 from a year ago, based on the...

  16. Residential heating oil price

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

    heating oil price decreases The average retail price for home heating oil fell 7.6 cents from a week ago to 2.97 per gallon. That's down 1.05 from a year ago, based on the...

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

    Broader source: Energy.gov [DOE]

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

  18. 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 ...

  19. Abrasion resistant heat pipe

    DOE Patents [OSTI]

    Ernst, Donald M. (Leola, PA)

    1984-10-23

    A specially constructed heat pipe for use in fluidized bed combustors. Two distinct coatings are spray coated onto a heat pipe casing constructed of low thermal expansion metal, each coating serving a different purpose. The first coating forms aluminum oxide to prevent hydrogen permeation into the heat pipe casing, and the second coating contains stabilized zirconium oxide to provide abrasion resistance while not substantially affecting the heat transfer characteristics of the system.

  20. Solar heat receiver

    DOE Patents [OSTI]

    Hunt, Arlon J. (Oakland, CA); Hansen, Leif J. (Berkeley, CA); Evans, David B. (Orinda, CA)

    1985-01-01

    A receiver for converting solar energy to heat a gas to temperatures from 700.degree.-900.degree. C. The receiver is formed to minimize impingement of radiation on the walls and to provide maximum heating at and near the entry of the gas exit. Also, the receiver is formed to provide controlled movement of the gas to be heated to minimize wall temperatures. The receiver is designed for use with gas containing fine heat absorbing particles, such as carbon particles.

  1. Solar heat receiver

    DOE Patents [OSTI]

    Hunt, A.J.; Hansen, L.J.; Evans, D.B.

    1982-09-29

    A receiver is described for converting solar energy to heat a gas to temperatures from 700 to 900/sup 0/C. The receiver is formed to minimize impingement of radiation on the walls and to provide maximum heating at and near the entry of the gas exit. Also, the receiver is formed to provide controlled movement of the gas to be heated to minimize wall temperatures. The receiver is designed for use with gas containing fine heat absorbing particles, such as carbon particles.

  2. Abrasion resistant heat pipe

    DOE Patents [OSTI]

    Ernst, D.M.

    1984-10-23

    A specially constructed heat pipe is described for use in fluidized bed combustors. Two distinct coatings are spray coated onto a heat pipe casing constructed of low thermal expansion metal, each coating serving a different purpose. The first coating forms aluminum oxide to prevent hydrogen permeation into the heat pipe casing, and the second coating contains stabilized zirconium oxide to provide abrasion resistance while not substantially affecting the heat transfer characteristics of the system.

  3. ARM - Heat Index Calculations

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

    CalculatorsHeat Index Calculations Outreach Home Room News Publications Traditional Knowledge Kiosks Barrow, Alaska Tropical Western Pacific Site Tours Contacts Students Study Hall About ARM Global Warming FAQ Just for Fun Meet our Friends Cool Sites Teachers Teachers' Toolbox Lesson Plans Heat Index Calculations Heat Index is an index that combines air temperature and relative humidity to estimate how hot it actually feels. The human body cools off through perspiration, which removes heat from

  4. MA HEAT Loan Overview

    Broader source: Energy.gov [DOE]

    Presents information on the success of Massachusetts's HEAT loan offerings and how the financing tool is funded.

  5. Liquid heat capacity lasers

    DOE Patents [OSTI]

    Comaskey, Brian J. (Walnut Creek, CA); Scheibner, Karl F. (Tracy, CA); Ault, Earl R. (Livermore, CA)

    2007-05-01

    The heat capacity laser concept is extended to systems in which the heat capacity lasing media is a liquid. The laser active liquid is circulated from a reservoir (where the bulk of the media and hence waste heat resides) through a channel so configured for both optical pumping of the media for gain and for light amplification from the resulting gain.

  6. Pioneering Heat Pump Project

    Broader source: Energy.gov [DOE]

    Project objectives: To install and monitor an innovative WaterFurnace geothermal system that is technologically advanced and evolving; To generate hot water heating from a heat pump that uses non-ozone depleting refrigerant CO2. To demonstrate the energy efficiency of this system ground source heat pump system.

  7. Waste Heat Recovery

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

    DRAFT - PRE-DECISIONAL - DRAFT 1 Waste Heat Recovery 1 Technology Assessment 2 Contents 3 1. Introduction to the Technology/System ............................................................................................... 2 4 1.1. Introduction to Waste Heat Recovery .......................................................................................... 2 5 1.2. Challenges and Barriers for Waste Heat Recovery ..................................................................... 13 6 1.3.

  8. Heat Pumps | Department of Energy

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

    Heat Pumps Heat Pumps Geothermal heat pumps are expensive to install but pay for themselves over time in reduced heating and cooling costs. Learn more about how geothermal heat pumps heat and cool buildings by concentrating the naturally existing heat contained within the earth -- a clean, reliable, and renewable source of energy. In moderate climates, heat pumps can be an energy-efficient alternative to furnaces and air conditioners. Several types of heat pumps are available, including

  9. Home Heating | Department of Energy

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

    Heating Home Heating Energy Saver 101 Infographic: Home Heating Energy Saver 101 Infographic: Home Heating Everything you need to know about home heating, including how heating systems work, the different types on the market and proper maintenance. Read more Thermostats Thermostats Save money on heating by automatically setting back your thermostat when you are asleep or away. Read more Wood and Pellet Heating Wood and Pellet Heating Wood and pellets are renewable fuel sources, and modern wood

  10. Chemical heat pump

    DOE Patents [OSTI]

    Greiner, Leonard

    1980-01-01

    A chemical heat pump system is disclosed for use in heating and cooling structures such as residences or commercial buildings. The system is particularly adapted to utilizing solar energy, but also increases the efficiency of other forms of thermal energy when solar energy is not available. When solar energy is not available for relatively short periods of time, the heat storage capacity of the chemical heat pump is utilized to heat the structure as during nighttime hours. The design also permits home heating from solar energy when the sun is shining. The entire system may be conveniently rooftop located. In order to facilitate installation on existing structures, the absorber and vaporizer portions of the system may each be designed as flat, thin wall, thin pan vessels which materially increase the surface area available for heat transfer. In addition, this thin, flat configuration of the absorber and its thin walled (and therefore relatively flexible) construction permits substantial expansion and contraction of the absorber material during vaporization and absorption without generating voids which would interfere with heat transfer. The heat pump part of the system heats or cools a house or other structure through a combination of evaporation and absorption or, conversely, condensation and desorption, in a pair of containers. A set of automatic controls change the system for operation during winter and summer months and for daytime and nighttime operation to satisfactorily heat and cool a house during an entire year. The absorber chamber is subjected to solar heating during regeneration cycles and is covered by one or more layers of glass or other transparent material. Daytime home air used for heating the home is passed at appropriate flow rates between the absorber container and the first transparent cover layer in heat transfer relationship in a manner that greatly reduce eddies and resultant heat loss from the absorbant surface to ambient atmosphere.

  11. A corrosive resistant heat exchanger

    DOE Patents [OSTI]

    Richlen, S.L.

    1987-08-10

    A corrosive and erosive resistant heat exchanger which recovers heat from a contaminated heat stream. The heat exchanger utilizes a boundary layer of innocuous gas, which is continuously replenished, to protect the heat exchanger surface from the hot contaminated gas. The innocuous gas is pumped through ducts or perforations in the heat exchanger wall. Heat from the heat stream is transferred by radiation to the heat exchanger wall. Heat is removed from the outer heat exchanger wall by a heat recovery medium. 3 figs., 3 tabs.

  12. Absorption heat pump system

    DOE Patents [OSTI]

    Grossman, Gershon (Oak Ridge, TN); Perez-Blanco, Horacio (Knoxville, TN)

    1984-01-01

    An improvement in an absorption heat pump cycle is obtained by adding adiabatic absorption and desorption steps to the absorber and desorber of the system. The adiabatic processes make it possible to obtain the highest temperature in the absorber before any heat is removed from it and the lowest temperature in the desorber before heat is added to it, allowing for efficient utilization of the thermodynamic availability of the heat supply stream. The improved system can operate with a larger difference between high and low working fluid concentrations, less circulation losses, and more efficient heat exchange than a conventional system.

  13. Impacts of the Weatherization Assistance Program in Fuel-Oil Heated Houses

    SciTech Connect (OSTI)

    Levins, W.P.

    1994-01-01

    In 1990, the U.S. Department of Energy (DOE) initiated a national evaluation of its low-income Weatherization Assistance Program. This report, which is one of five parts of that evaluation, evaluates the energy savings and cost-effectiveness of the Program as it had been applied to single-family houses heated primarily by fuel-oil. The study was based upon a representative sample (41 local weatherization agencies, 222 weatherized and 115 control houses) from the nine northeastern states during 1991 and 1992 program years. Dwelling-specific and agency-level data on measures installed, costs, and service delivery procedures were collected from the sampled agencies. Space-heating fuel-oil consumption, indoor temperature, and outdoor temperature were monitored at each house. Dwelling characteristics, air-leakage measurements, space-heating system steady-state efficiency measurements, safety inspections, and occupant questionnaires were also collected or performed at each monitored house. We estimate that the Program weatherized a total of 23,400 single-family fuel-oil heated houses in the nine northeastern states during program years 1991 and 1992. Annual fuel-oil savings were calculated using regression techniques to normalize the savings to standard weather conditions. For the northeast region, annual net fuel-oil savings averaged 160 gallons per house, or 17.7% of pre-weatherization consumption. Although indoor temperatures changed in individual houses following weatherization, there was no average change and no significant difference as compared to the control houses; thus, there was no overall indoor temperature takeback effect influencing fuel-oil savings. The weatherization work was performed cost effectively in these houses from the Program perspective, which included both installation costs and overhead and management costs but did not include non-energy benefits (such as employment and environmental). Total average costs were $1819 per house ($1192 for installation labor and materials, and $627 for overhead and management), and the benefit-to-cost ratio was 1.48. A general trend toward higher-than-average fuel-oil savings was observed in houses with high pre-weatherization fuel-oil consumption. Program savings could likely be increased by targeting higher energy consumers for weatherization, although equity issues would have to be considered. Weatherization measures associated with higher-than-average savings were use of a blower door for air-sealing, attic and wall insulation, and replacement space-heating systems. Space-heating system tune-ups were not particularly effective at improving the steady-state efficiency of systems, although other benefits such as improved seasonal efficiency, and system safety and reliability may have resulted. The Program should investigate methods of improving the selection and/or application of space-heating system tune-ups and actively promote improved tune-up procedures that have been developed as a primary technology transfer activity. Houses were more air-tight following weatherization, but still leakier than what is achievable. Additional technology transfer effort is recommended to increase the use of blower doors considering that only half the weatherized houses used a blower door during air sealing. A guidebook developed by a committee of experts and covering a full range of blower-door topics might be a useful technology transfer and training document. Weatherization appeared to make occupants feel better about their house and house environment.

  14. Heat pump apparatus

    DOE Patents [OSTI]

    Nelson, Paul A. (Wheaton, IL); Horowitz, Jeffrey S. (Woodridge, IL)

    1983-01-01

    A heat pump apparatus including a compact arrangement of individual tubular reactors containing hydride-dehydride beds in opposite end sections, each pair of beds in each reactor being operable by sequential and coordinated treatment with a plurality of heat transfer fluids in a plurality of processing stages, and first and second valves located adjacent the reactor end sections with rotatable members having multiple ports and associated portions for separating the hydride beds at each of the end sections into groups and for simultaneously directing a plurality of heat transfer fluids to the different groups. As heat is being generated by a group of beds, others are being regenerated so that heat is continuously available for space heating. As each of the processing stages is completed for a hydride bed or group of beds, each valve member is rotated causing the heat transfer fluid for the heat processing stage to be directed to that bed or group of beds. Each of the end sections are arranged to form a closed perimeter and the valve member may be rotated repeatedly about the perimeter to provide a continuous operation. Both valves are driven by a common motor to provide a coordinated treatment of beds in the same reactors. The heat pump apparatus is particularly suitable for the utilization of thermal energy supplied by solar collectors and concentrators but may be used with any source of heat, including a source of low-grade heat.

  15. 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...

  16. Active microchannel heat exchanger

    DOE Patents [OSTI]

    Tonkovich, Anna Lee Y. (Pasco, WA) [Pasco, WA; Roberts, Gary L. (West Richland, WA) [West Richland, WA; Call, Charles J. (Pasco, WA) [Pasco, WA; Wegeng, Robert S. (Richland, WA) [Richland, WA; Wang, Yong (Richland, WA) [Richland, WA

    2001-01-01

    The present invention is an active microchannel heat exchanger with an active heat source and with microchannel architecture. The microchannel heat exchanger has (a) an exothermic reaction chamber; (b) an exhaust chamber; and (c) a heat exchanger chamber in thermal contact with the exhaust chamber, wherein (d) heat from the exothermic reaction chamber is convected by an exothermic reaction exhaust through the exhaust chamber and by conduction through a containment wall to the working fluid in the heat exchanger chamber thereby raising a temperature of the working fluid. The invention is particularly useful as a liquid fuel vaporizer and/or a steam generator for fuel cell power systems, and as a heat source for sustaining endothermic chemical reactions and initiating exothermic reactions.

  17. Waste Heat Management Options for Improving Industrial Process Heating

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

    Systems | Department of Energy presentation covers typical sources of waste heat from process heating equipment, characteristics of waste heat streams, and options for recovery including Combined Heat and Power. PDF icon Waste Heat Management Options for Improving Industrial Process Heating Systems (August 20, 2009) More Documents & Publications Energy Systems Reduce Radiation Losses from Heating Equipment Seven Ways to Optimize Your Process Heat System

  18. Heat pump system

    DOE Patents [OSTI]

    Swenson, Paul F. (Shaker Heights, OH); Moore, Paul B. (Fedhaven, FL)

    1983-01-01

    An air heating and cooling system for a building includes an expansion type refrigeration circuit and a vapor power circuit. The refrigeration circuit includes two heat exchangers, one of which is communicated with a source of indoor air from the building and the other of which is communicated with a source of air from outside the building. The vapor power circuit includes two heat exchangers, one of which is disposed in series air flow relationship with the indoor refrigeration circuit heat exchanger and the other of which is disposed in series air flow relationship with the outdoor refrigeration circuit heat exchanger. Fans powered by electricity generated by a vapor power circuit alternator circulate indoor air through the two indoor heat exchangers and circulate outside air through the two outdoor heat exchangers. The system is assembled as a single roof top unit, with a vapor power generator and turbine and compressor thermally insulated from the heat exchangers, and with the indoor heat exchangers thermally insulated from the outdoor heat exchangers.

  19. Heat pump system

    DOE Patents [OSTI]

    Swenson, Paul F.; Moore, Paul B.

    1983-06-21

    An air heating and cooling system for a building includes an expansion type refrigeration circuit and a vapor power circuit. The refrigeration circuit includes two heat exchangers, one of which is communicated with a source of indoor air from the building and the other of which is communicated with a source of air from outside the building. The vapor power circuit includes two heat exchangers, one of which is disposed in series air flow relationship with the indoor refrigeration circuit heat exchanger and the other of which is disposed in series air flow relationship with the outdoor refrigeration circuit heat exchanger. Fans powered by electricity generated by a vapor power circuit alternator circulate indoor air through the two indoor heat exchangers and circulate outside air through the two outdoor heat exchangers. The system is assembled as a single roof top unit, with a vapor power generator and turbine and compressor thermally insulated from the heat exchangers, and with the indoor heat exchangers thermally insulated from the outdoor heat exchangers.

  20. Saving money through energy conservation in manufactured housing

    SciTech Connect (OSTI)

    Not Available

    1984-01-01

    Things to look for in buying a new manufactured home are discussed. Site orientation is discussed and energy saving tips for heating, cooling, hot water heating, kitchen, dishwasher, laundry, and lighting are presented. A glossary is included. (MHR)

  1. 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.

  2. Waste Heat Management Options: Industrial Process Heating Systems

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

    Heat Management Options Industrial Process Heating Systems By Dr. Arvind C. Thekdi E-mail: athekdi@e3minc.com E3M, Inc. August 20, 2009 2 Source of Waste Heat in Industries * Steam Generation * Fluid Heating * Calcining * Drying * Heat Treating * Metal Heating * Metal and Non-metal Melting * Smelting, agglomeration etc. * Curing and Forming * Other Heating Waste heat is everywhere! Arvind Thekdi, E3M Inc Arvind Thekdi, E3M Inc 3 Waste Heat Sources from Process Heating Equipment * Hot gases -

  3. Heat storage duration

    SciTech Connect (OSTI)

    Balcomb, J.D.

    1981-01-01

    Both the amount and duration of heat storage in massive elements of a passive building are investigated. Data taken for one full winter in the Balcomb solar home are analyzed with the aid of sub-system simulation models. Heat storage duration is tallied into one-day intervals. Heat storage location is discussed and related to overall energy flows. The results are interpreted and conclusions drawn.

  4. Fluidized bed heat treating system

    DOE Patents [OSTI]

    Ripley, Edward B; Pfennigwerth, Glenn L

    2014-05-06

    Systems for heat treating materials are presented. The systems typically involve a fluidized bed that contains granulated heat treating material. In some embodiments a fluid, such as an inert gas, is flowed through the granulated heat treating medium, which homogenizes the temperature of the heat treating medium. In some embodiments the fluid may be heated in a heating vessel and flowed into the process chamber where the fluid is then flowed through the granulated heat treating medium. In some embodiments the heat treating material may be liquid or granulated heat treating material and the heat treating material may be circulated through a heating vessel into a process chamber where the heat treating material contacts the material to be heat treated. Microwave energy may be used to provide the source of heat for heat treating systems.

  5. Passive solar space heating

    SciTech Connect (OSTI)

    Balcomb, J.D.

    1980-01-01

    An overview of passive solar space heating is presented indicating trends in design, new developments, performance measures, analytical design aids, and monitored building results.

  6. HEATS: Thermal Energy Storage

    SciTech Connect (OSTI)

    2012-01-01

    HEATS Project: The 15 projects that make up ARPA-Es HEATS program, short for High Energy Advanced Thermal Storage, seek to develop revolutionary, cost-effective ways to store thermal energy. HEATS focuses on 3 specific areas: 1) developing high-temperature solar thermal energy storage capable of cost-effectively delivering electricity around the clock and thermal energy storage for nuclear power plants capable of cost-effectively meeting peak demand, 2) creating synthetic fuel efficiently from sunlight by converting sunlight into heat, and 3) using thermal energy storage to improve the driving range of electric vehicles (EVs) and also enable thermal management of internal combustion engine vehicles.

  7. Total Space Heat-

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

    12 1 18 (*) 2 1 Q 6 Buildings without Cooling ... 30 1 (*) 4 (*) 14 (*) 4 (*) 1 6 Water-Heating Energy Source Electricity ... 402 21 57 42...

  8. Cover Heated, Open Vessels

    Broader source: Energy.gov [DOE]

    This tip sheet on covering heated, open vessels provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

  9. Heat and mass exchanger

    DOE Patents [OSTI]

    Lowenstein, Andrew (Princeton, NJ); Sibilia, Marc J. (Princeton, NJ); Miller, Jeffrey A. (Hopewell, NJ); Tonon, Thomas (Princeton, NJ)

    2007-09-18

    A mass and heat exchanger includes at least one first substrate with a surface for supporting a continuous flow of a liquid thereon that either absorbs, desorbs, evaporates or condenses one or more gaseous species from or to a surrounding gas; and at least one second substrate operatively associated with the first substrate. The second substrate includes a surface for supporting the continuous flow of the liquid thereon and is adapted to carry a heat exchange fluid therethrough, wherein heat transfer occurs between the liquid and the heat exchange fluid.

  10. Heat and mass exchanger

    DOE Patents [OSTI]

    Lowenstein, Andrew (Princeton, NJ); Sibilia, Marc J. (Princeton, NJ); Miller, Jeffrey A. (Hopewell, NJ); Tonon, Thomas (Princeton, NJ)

    2011-06-28

    A mass and heat exchanger includes at least one first substrate with a surface for supporting a continuous flow of a liquid thereon that either absorbs, desorbs, evaporates or condenses one or more gaseous species from or to a surrounding gas; and at least one second substrate operatively associated with the first substrate. The second substrate includes a surface for supporting the continuous flow of the liquid thereon and is adapted to carry a heat exchange fluid therethrough, wherein heat transfer occurs between the liquid and the heat exchange fluid.

  11. Ductless Heat Pumps

    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. 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...

  13. Heat rejection system

    DOE Patents [OSTI]

    Smith, Gregory C. (Richland, WA); Tokarz, Richard D. (Richland, WA); Parry, Jr., Harvey L. (Richland, WA); Braun, Daniel J. (Richland, WA)

    1980-01-01

    A cooling system for rejecting waste heat consists of a cooling tower incorporating a plurality of coolant tubes provided with cooling fins and each having a plurality of cooling channels therein, means for directing a heat exchange fluid from the power plant through less than the total number of cooling channels to cool the heat exchange fluid under normal ambient temperature conditions, means for directing water through the remaining cooling channels whenever the ambient temperature rises above the temperature at which dry cooling of the heat exchange fluid is sufficient and means for cooling the water.

  14. Chemical heat pump

    DOE Patents [OSTI]

    Greiner, Leonard

    1981-01-01

    A chemical heat pump system is disclosed for use in heating and cooling structures such as residences or commercial buildings. The system is particularly adapted to utilizing solar energy, but also increases the efficiency of other forms of thermal energy when solar energy is not available. When solar energy is not available for relatively short periods of time, the heat storage capacity of the chemical heat pump is utilized to heat the structure, as during nighttime hours. The design also permits home heating from solar energy when the sun is shining. The entire system may be conveniently rooftop located. In order to facilitate installation on existing structures, the absorber and vaporizer portions of the system may each be designed as flat, thin wall, thin pan vessels which materially increase the surface area available for heat transfer. In addition, this thin, flat configuration of the absorber and its thin walled (and therefore relatively flexible) construction permits substantial expansion and contraction of the absorber material during vaporization and absorption without generating voids which would interfere with heat transfer.

  15. Chemical heat pump

    DOE Patents [OSTI]

    Greiner, Leonard

    1984-01-01

    A chemical heat pump system is disclosed for use in heating and cooling structures such as residences or commercial buildings. The system is particularly adapted to utilizing solar energy, but also increases the efficiency of other forms of thermal energy when solar energy is not available. When solar energy is not available for relatively short periods of time, the heat storage capacity of the chemical heat pump is utilized to heat the structure, as during nighttime hours. The design also permits home heating from solar energy when the sun is shining. The entire system may be conveniently rooftop located. In order to facilitate installation on existing structures, the absorber and vaporizer portions of the system may each be designed as flat, thin wall, thin pan vessels which materially increase the surface area available for heat transfer. In addition, this thin, flat configuration of the absorber and its thin walled (and therefore relatively flexible) construction permits substantial expansion and contraction of the absorber material during vaporization and absorption without generating voids which would interfere with heat transfer.

  16. Chemical heat pump

    DOE Patents [OSTI]

    Greiner, Leonard

    1984-01-01

    A chemical heat pump system is disclosed for use in heating and cooling structures such as residences or commercial buildings. The system is particularly adapted to utilizing solar energy, but also increases the efficiency of other forms of thermal energy when solar energy is not available. When solar energy is not available for relatively short periods of time, the heat storage capacity of the chemical heat pump is utilized to heat the structure, as during nighttime hours. The design also permits home heating from solar energy when the sun is shining. The entire system may be conveniently rooftop located. In order to faciliate installation on existing structures, the absorber and vaporizer portions of the system may each be designed as flat, thin wall, thin pan vessels which materially increase the surface area available for heat transfer. In addition, this thin, flat configuration of the absorber and its thin walled (and therefore relatively flexible) construction permits substantial expansion and contraction of the absorber material during vaporization and absorption without generating voids which would interfere with heat transfer.

  17. Chemical heat pump

    DOE Patents [OSTI]

    Greiner, Leonard

    1984-01-01

    A chemical heat pump system is disclosed for use in heating and cooling structures such as residences or commercial buildings. The system is particularly adapted to utilizing solar energy, but also increases the efficiency of other forms of thermal energy when solar energy is not available. When solar energy is not available for relatively short periods of time, the heat storage capacity of the chemical heat pump is utilized to heat the structure, as during nighttime hours. The design also permits home heating from solar energy when the sun is shining. The entire system may be conveniently rooftop located. In order to facilitate intallation on existing structures, the absorber and vaporizer portions of the system may each be designed as flat, thin wall, thin pan vessels which materially increase the surface area available for heat transfer. In addition, this thin, flat configuration of the absorber and its thin walled (and therefore relatively flexible) construction permits substantial expansion and contraction of the absorber material during vaporization and absorption without generating voids which would interfere with heat transfer.

  18. Microchannel heat sink assembly

    DOE Patents [OSTI]

    Bonde, Wayne L. (Livermore, CA); Contolini, Robert J. (Pleasanton, CA)

    1992-01-01

    The present invention provides a microchannel heat sink with a thermal range from cryogenic temperatures to several hundred degrees centigrade. The heat sink can be used with a variety of fluids, such as cryogenic or corrosive fluids, and can be operated at a high pressure. The heat sink comprises a microchannel layer preferably formed of silicon, and a manifold layer preferably formed of glass. The manifold layer comprises an inlet groove and outlet groove which define an inlet manifold and an outlet manifold. The inlet manifold delivers coolant to the inlet section of the microchannels, and the outlet manifold receives coolant from the outlet section of the microchannels. In one embodiment, the manifold layer comprises an inlet hole extending through the manifold layer to the inlet manifold, and an outlet hole extending through the manifold layer to the outlet manifold. Coolant is supplied to the heat sink through a conduit assembly connected to the heat sink. A resilient seal, such as a gasket or an O-ring, is disposed between the conduit and the hole in the heat sink in order to provide a watetight seal. In other embodiments, the conduit assembly may comprise a metal tube which is connected to the heat sink by a soft solder. In still other embodiments, the heat sink may comprise inlet and outlet nipples. The present invention has application in supercomputers, integrated circuits and other electronic devices, and is suitable for cooling materials to superconducting temperatures.

  19. Microchannel heat sink assembly

    DOE Patents [OSTI]

    Bonde, W.L.; Contolini, R.J.

    1992-03-24

    The present invention provides a microchannel heat sink with a thermal range from cryogenic temperatures to several hundred degrees centigrade. The heat sink can be used with a variety of fluids, such as cryogenic or corrosive fluids, and can be operated at a high pressure. The heat sink comprises a microchannel layer preferably formed of silicon, and a manifold layer preferably formed of glass. The manifold layer comprises an inlet groove and outlet groove which define an inlet manifold and an outlet manifold. The inlet manifold delivers coolant to the inlet section of the microchannels, and the outlet manifold receives coolant from the outlet section of the microchannels. In one embodiment, the manifold layer comprises an inlet hole extending through the manifold layer to the inlet manifold, and an outlet hole extending through the manifold layer to the outlet manifold. Coolant is supplied to the heat sink through a conduit assembly connected to the heat sink. A resilient seal, such as a gasket or an O-ring, is disposed between the conduit and the hole in the heat sink in order to provide a watertight seal. In other embodiments, the conduit assembly may comprise a metal tube which is connected to the heat sink by a soft solder. In still other embodiments, the heat sink may comprise inlet and outlet nipples. The present invention has application in supercomputers, integrated circuits and other electronic devices, and is suitable for cooling materials to superconducting temperatures. 13 figs.

  20. Combined Heat and Power

    Office of Environmental Management (EM)

    Combined Heat and Power 1 Technology Assessment 2 Contents 3 1. Introduction to the Technology/System ............................................................................................... 2 4 1.1 Combined Heat and Power overview ........................................................................................... 2 5 1.2 Benefits of CHP for the Nation ...................................................................................................... 4 6 1.3 Benefits of CHP for

  1. Radioisotopic heat source

    DOE Patents [OSTI]

    Jones, G.J.; Selle, J.E.; Teaney, P.E.

    1975-09-30

    Disclosed is a radioisotopic heat source and method for a long life electrical generator. The source includes plutonium dioxide shards and yttrium or hafnium in a container of tantalum-tungsten-hafnium alloy, all being in a nickel alloy outer container, and subjected to heat treatment of from about 1570$sup 0$F to about 1720$sup 0$F for about one h. (auth)

  2. Knudsen heat capacity

    SciTech Connect (OSTI)

    Babac, Gulru; Reese, Jason M.

    2014-05-15

    We present a Knudsen heat capacity as a more appropriate and useful fluid property in micro/nanoscale gas systems than the constant pressure heat capacity. At these scales, different fluid processes come to the fore that are not normally observed at the macroscale. For thermodynamic analyses that include these Knudsen processes, using the Knudsen heat capacity can be more effective and physical. We calculate this heat capacity theoretically for non-ideal monatomic and diatomic gases, in particular, helium, nitrogen, and hydrogen. The quantum modification for para and ortho hydrogen is also considered. We numerically model the Knudsen heat capacity using molecular dynamics simulations for the considered gases, and compare these results with the theoretical ones.

  3. Improved solar heating systems

    DOE Patents [OSTI]

    Schreyer, J.M.; Dorsey, G.F.

    1980-05-16

    An improved solar heating system is described in which the incident radiation of the sun is absorbed on collector panels, transferred to a storage unit and then distributed as heat for a building and the like. The improvement is obtained by utilizing a storage unit comprising separate compartments containing an array of materials having different melting points ranging from 75 to 180/sup 0/F. The materials in the storage system are melted in accordance with the amount of heat absorbed from the sun and then transferred to the storage system. An efficient low volume storage system is provided by utilizing the latent heat of fusion of the materials as they change states in storing ad releasing heat for distribution.

  4. Solar heating system

    DOE Patents [OSTI]

    Schreyer, James M. (Oak Ridge, TN); Dorsey, George F. (Concord, TN)

    1982-01-01

    An improved solar heating system in which the incident radiation of the sun is absorbed on collector panels, transferred to a storage unit and then distributed as heat for a building and the like. The improvement is obtained by utilizing a storage unit comprising separate compartments containing an array of materials having different melting points ranging from 75.degree. to 180.degree. F. The materials in the storage system are melted in accordance with the amount of heat absorbed from the sun and then transferred to the storage system. An efficient low volume storage system is provided by utilizing the latent heat of fusion of the materials as they change states in storing and releasing heat for distribution.

  5. Heat pipes and use of heat pipes in furnace exhaust

    DOE Patents [OSTI]

    Polcyn, Adam D. (Pittsburgh, PA)

    2010-12-28

    An array of a plurality of heat pipe are mounted in spaced relationship to one another with the hot end of the heat pipes in a heated environment, e.g. the exhaust flue of a furnace, and the cold end outside the furnace. Heat conversion equipment is connected to the cold end of the heat pipes.

  6. Radiant Heating | Department of Energy

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

    Heating Systems » Radiant Heating Radiant Heating In-wall radiant heating in a house under construction near Denver. | Photo courtesy of Warren Gretz, NREL. In-wall radiant heating in a house under construction near Denver. | Photo courtesy of Warren Gretz, NREL. Radiant heating systems supply heat directly to the floor or to panels in the wall or ceiling of a house. The systems depend largely on radiant heat transfer -- the delivery of heat directly from the hot surface to the people and

  7. Integrating preconcentrator heat controller

    DOE Patents [OSTI]

    Bouchier, Francis A. (Albuquerque, NM); Arakaki, Lester H. (Edgewood, NM); Varley, Eric S. (Albuquerque, NM)

    2007-10-16

    A method and apparatus for controlling the electric resistance heating of a metallic chemical preconcentrator screen, for example, used in portable trace explosives detectors. The length of the heating time-period is automatically adjusted to compensate for any changes in the voltage driving the heating current across the screen, for example, due to gradual discharge or aging of a battery. The total deposited energy in the screen is proportional to the integral over time of the square of the voltage drop across the screen. Since the net temperature rise, .DELTA.T.sub.s, of the screen, from beginning to end of the heating pulse, is proportional to the total amount of heat energy deposited in the screen during the heating pulse, then this integral can be calculated in real-time and used to terminate the heating current when a pre-set target value has been reached; thereby providing a consistent and reliable screen temperature rise, .DELTA.T.sub.s, from pulse-to-pulse.

  8. Micro heat barrier

    DOE Patents [OSTI]

    Marshall, Albert C.; Kravitz, Stanley H.; Tigges, Chris P.; Vawter, Gregory A.

    2003-08-12

    A highly effective, micron-scale micro heat barrier structure and process for manufacturing a micro heat barrier based on semiconductor and/or MEMS fabrication techniques. The micro heat barrier has an array of non-metallic, freestanding microsupports with a height less than 100 microns, attached to a substrate. An infrared reflective membrane (e.g., 1 micron gold) can be supported by the array of microsupports to provide radiation shielding. The micro heat barrier can be evacuated to eliminate gas phase heat conduction and convection. Semi-isotropic, reactive ion plasma etching can be used to create a microspike having a cusp-like shape with a sharp, pointed tip (<0.1 micron), to minimize the tip's contact area. A heat source can be placed directly on the microspikes. The micro heat barrier can have an apparent thermal conductivity in the range of 10.sup.-6 to 10.sup.-7 W/m-K. Multiple layers of reflective membranes can be used to increase thermal resistance.

  9. 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...

  10. Heat treatment furnace

    DOE Patents [OSTI]

    Seals, Roland D; Parrott, Jeffrey G; DeMint, Paul D; Finney, Kevin R; Blue, Charles T

    2014-10-21

    A furnace heats through both infrared radiation and convective air utilizing an infrared/purge gas design that enables improved temperature control to enable more uniform treatment of workpieces. The furnace utilizes lamps, the electrical end connections of which are located in an enclosure outside the furnace chamber, with the lamps extending into the furnace chamber through openings in the wall of the chamber. The enclosure is purged with gas, which gas flows from the enclosure into the furnace chamber via the openings in the wall of the chamber so that the gas flows above and around the lamps and is heated to form a convective mechanism in heating parts.

  11. Stirling engine heating system

    SciTech Connect (OSTI)

    Johansson, L.N.; Houtman, W.H.; Percival, W.H.

    1988-06-28

    A hot gas engine is described wherein a working gas flows back and forth in a closed path between a relatively cooler compression cylinder side of the engine and a relatively hotter expansion cylinder side of the engine and the path contains means including a heat source and a heat sink acting upon the gas in cooperation with the compression and expansion cylinders to cause the gas to execute a thermodynamic cycle wherein useful mechanical output power is developed by the engine, the improvement in the heat source which comprises a plurality of individual tubes each forming a portion of the closed path for the working gas.

  12. Heat distribution by natural convection

    SciTech Connect (OSTI)

    Balcomb, J.D.; Yamaguchi, K.

    1983-01-01

    Natural convection between spaces in a building can play a major role in energy transfer. Two situations are investigated: convection through a single doorway into a remote room, and a convective loop in a two-story house with a south sunspace where a north stairway serves as the return path. A doorway-sizing equation is given for the single-door case. Detailed data are given from the monitoring of airflow in one two-story house and summary data are given for five others. Observations on the nature of the airflow and design guidelines are presented.

  13. 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: ...

  14. 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 OrganizationAttendees DOE - John Cymbalsky - Ashley Armstrong - Johanna ...

  15. Energy 101: Geothermal Heat Pumps

    Broader source: Energy.gov [DOE]

    An energy-efficient heating and cooling alternative, the geothermal heat pump system moves heat from the ground to a building (or from a building to the ground) through a series of flexible pipe ...

  16. 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...

  17. Residential heating oil price decreases

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

    heating oil price decreases The average retail price for home heating oil fell 10.5 cents from a week ago to 2.93 per gallon, based on the residential heating fuel survey by the...

  18. Residential heating oil prices available

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

    heating oil prices available The average retail price for home heating oil is 2.41 per gallon, based on the residential heating fuel survey by the U.S. Energy Information...

  19. Passive solar heating analysis

    SciTech Connect (OSTI)

    Balcomb, J.D.; Jones, R.W.; Mc Farland, R.D.; Wray, W.O.

    1984-01-01

    This book discusses about the design of solar heating systems. The terms and symbols are clearly defined. Step-by-step procedures are indicated. Worked examples are given with tables, graphs, appendixes.

  20. Renewable Heat NY

    Broader source: Energy.gov [DOE]

    NOTE: On August 2015, NYSERDA increased the incentive levels for technologies offered under the Renewable Heat NY program. In general, new incentives fund up to 45% of the total project cost, which...

  1. Heat Pump Water Heaters | Department of Energy

    Office of Environmental Management (EM)

    Heat & Cool Water Heating 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...

  2. Heat flux limiting sleeves

    DOE Patents [OSTI]

    Harris, William G. (Tampa, FL)

    1985-01-01

    A heat limiting tubular sleeve extending over only a portion of a tube having a generally uniform outside diameter, the sleeve being open on both ends, having one end thereof larger in diameter than the other end thereof and having a wall thickness which decreases in the same direction as the diameter of the sleeve decreases so that the heat transfer through the sleeve and tube is less adjacent the large diameter end of the sleeve than adjacent the other end thereof.

  3. Freezable heat pipe

    DOE Patents [OSTI]

    Ernst, Donald M. (Leola, PA); Sanzi, James L. (Lancaster, PA)

    1981-02-03

    A heat pipe whose fluid can be repeatedly frozen and thawed without damage to the casing. An additional part is added to a conventional heat pipe. This addition is a simple porous structure, such as a cylinder, self-supporting and free standing, which is dimensioned with its diameter not spanning the inside transverse dimension of the casing, and with its length surpassing the depth of maximum liquid.

  4. ARM - Atmospheric Heat Budget

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

    ListAtmospheric Heat Budget Outreach Home Room News Publications Traditional Knowledge Kiosks Barrow, Alaska Tropical Western Pacific Site Tours Contacts Students Study Hall About ARM Global Warming FAQ Just for Fun Meet our Friends Cool Sites Teachers Teachers' Toolbox Lesson Plans Atmospheric Heat Budget The average temperature of the earth has remained approximately constant at about 15 degrees Celsius during the past century. It is therefore in a state of radiative balance, emitting the same

  5. Convective heat flow probe

    DOE Patents [OSTI]

    Dunn, James C. (Albuquerque, NM); Hardee, Harry C. (Albuquerque, NM); Striker, Richard P. (Albuquerque, NM)

    1985-01-01

    A convective heat flow probe device is provided which measures heat flow and fluid flow magnitude in the formation surrounding a borehole. The probe comprises an elongate housing adapted to be lowered down into the borehole; a plurality of heaters extending along the probe for heating the formation surrounding the borehole; a plurality of temperature sensors arranged around the periphery of the probe for measuring the temperature of the surrounding formation after heating thereof by the heater elements. The temperature sensors and heater elements are mounted in a plurality of separate heater pads which are supported by the housing and which are adapted to be radially expanded into firm engagement with the walls of the borehole. The heat supplied by the heater elements and the temperatures measured by the temperature sensors are monitored and used in providing the desired measurements. The outer peripheral surfaces of the heater pads are configured as segments of a cylinder and form a full cylinder when taken together. A plurality of temperature sensors are located on each pad so as to extend along the length and across the width thereof, with a heating element being located in each pad beneath the temperature sensors. An expansion mechanism driven by a clamping motor provides expansion and retraction of the heater pads and expandable packer-type seals are provided along the probe above and below the heater pads.

  6. Radial flow heat exchanger

    DOE Patents [OSTI]

    Valenzuela, Javier (Hanover, NH)

    2001-01-01

    A radial flow heat exchanger (20) having a plurality of first passages (24) for transporting a first fluid (25) and a plurality of second passages (26) for transporting a second fluid (27). The first and second passages are arranged in stacked, alternating relationship, are separated from one another by relatively thin plates (30) and (32), and surround a central axis (22). The thickness of the first and second passages are selected so that the first and second fluids, respectively, are transported with laminar flow through the passages. To enhance thermal energy transfer between first and second passages, the latter are arranged so each first passage is in thermal communication with an associated second passage along substantially its entire length, and vice versa with respect to the second passages. The heat exchangers may be stacked to achieve a modular heat exchange assembly (300). Certain heat exchangers in the assembly may be designed slightly differently than other heat exchangers to address changes in fluid properties during transport through the heat exchanger, so as to enhance overall thermal effectiveness of the assembly.

  7. Intrinsically irreversible heat engine

    DOE Patents [OSTI]

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

    1984-01-01

    A class of heat engines based on an intrinsically irreversible heat transfer process is disclosed. In a typical embodiment the engine comprises a compressible fluid that is cyclically compressed and expanded while at the same time being driven in reciprocal motion by a positive displacement drive means. A second thermodynamic medium is maintained in imperfect thermal contact with the fluid and bears a broken thermodynamic symmetry with respect to the fluid. the second thermodynamic medium is a structure adapted to have a low fluid flow impedance with respect to the compressible fluid, and which is further adapted to be in only moderate thermal contact with the fluid. In operation, thermal energy is pumped along the second medium due to a phase lag between the cyclical heating and cooling of the fluid and the resulting heat conduction between the fluid and the medium. In a preferred embodiment the engine comprises an acoustical drive and a housing containing a gas which is driven at a resonant frequency so as to be maintained in a standing wave. Operation of the engine at acoustic frequencies improves the power density and coefficient of performance. The second thermodynamic medium can be coupled to suitable heat exchangers to utilize the engine as a simple refrigeration device having no mechanical moving parts. Alternatively, the engine is reversible in function so as to be utilizable as a prime mover by coupling it to suitable sources and sinks of heat.

  8. Convective heat flow probe

    DOE Patents [OSTI]

    Dunn, J.C.; Hardee, H.C.; Striker, R.P.

    1984-01-09

    A convective heat flow probe device is provided which measures heat flow and fluid flow magnitude in the formation surrounding a borehole. The probe comprises an elongate housing adapted to be lowered down into the borehole; a plurality of heaters extending along the probe for heating the formation surrounding the borehole; a plurality of temperature sensors arranged around the periphery of the probe for measuring the temperature of the surrounding formation after heating thereof by the heater elements. The temperature sensors and heater elements are mounted in a plurality of separate heater pads which are supported by the housing and which are adapted to be radially expanded into firm engagement with the walls of the borehole. The heat supplied by the heater elements and the temperatures measured by the temperature sensors are monitored and used in providing the desired measurements. The outer peripheral surfaces of the heater pads are configured as segments of a cylinder and form a full cylinder when taken together. A plurality of temperature sensors are located on each pad so as to extend along the length and across the width thereof, with a heating element being located in each pad beneath the temperature sensors. An expansion mechanism driven by a clamping motor provides expansion and retraction of the heater pads and expandable packet-type seals are provided along the probe above and below the heater pads.

  9. Intrinsically irreversible heat engine

    DOE Patents [OSTI]

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

    1984-01-01

    A class of heat engines based on an intrinsically irreversible heat transfer process is disclosed. In a typical embodiment the engine comprises a compressible fluid that is cyclically compressed and expanded while at the same time being driven in reciprocal motion by a positive displacement drive means. A second thermodynamic medium is maintained in imperfect thermal contact with the fluid and bears a broken thermodynamic symmetry with respect to the fluid. The second thermodynamic medium is a structure adapted to have a low fluid flow impedance with respect to the compressible fluid, and which is further adapted to be in only moderate thermal contact with the fluid. In operation, thermal energy is pumped along the second medium due to a phase lag between the cyclical heating and cooling of the fluid and the resulting heat conduction between the fluid and the medium. In a preferred embodiment the engine comprises an acoustical drive and a housing containing a gas which is driven at a resonant frequency so as to be maintained in a standing wave. Operation of the engine at acoustic frequencies improves the power density and coefficient of performance. The second thermodynamic medium can be coupled to suitable heat exchangers to utilize the engine as a simple refrigeration device having no mechanical moving parts. Alternatively, the engine is reversible in function so as to be utilizable as a prime mover by coupling it to suitable sources and sinks of heat.

  10. Intrinsically irreversible heat engine

    DOE Patents [OSTI]

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

    1984-12-25

    A class of heat engines based on an intrinsically irreversible heat transfer process is disclosed. In a typical embodiment the engine comprises a compressible fluid that is cyclically compressed and expanded while at the same time being driven in reciprocal motion by a positive displacement drive means. A second thermodynamic medium is maintained in imperfect thermal contact with the fluid and bears a broken thermodynamic symmetry with respect to the fluid. The second thermodynamic medium is a structure adapted to have a low fluid flow impedance with respect to the compressible fluid, and which is further adapted to be in only moderate thermal contact with the fluid. In operation, thermal energy is pumped along the second medium due to a phase lag between the cyclical heating and cooling of the fluid and the resulting heat conduction between the fluid and the medium. In a preferred embodiment the engine comprises an acoustical drive and a housing containing a gas which is driven at a resonant frequency so as to be maintained in a standing wave. Operation of the engine at acoustic frequencies improves the power density and coefficient of performance. The second thermodynamic medium can be coupled to suitable heat exchangers to utilize the engine as a simple refrigeration device having no mechanical moving parts. Alternatively, the engine is reversible in function so as to be utilizable as a prime mover by coupling it to suitable sources and sinks of heat. 11 figs.

  11. Rechargeable Heat Battery's Secret Revealed

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

    Rechargeable Heat Battery Rechargeable Heat Battery's Secret Revealed Solar energy capture in chemical form makes it storable and transportable January 11, 2011 Contact: John...

  12. 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...

  13. NGNP Process Heat Utilization: Liquid Metal Phase Change Heat Exchanger

    SciTech Connect (OSTI)

    Piyush Sabharwall; Mike Patterson; Vivek Utgikar; Fred Gunnerson

    2008-09-01

    One key long-standing issue that must be overcome to fully realize the successful growth of nuclear power is to determine other benefits of nuclear energy apart from meeting the electricity demands. The Next Generation Nuclear Plant (NGNP) will most likely be producing electricity and heat for the production of hydrogen and/or oil retrieval from oil sands and oil shale to help in our national pursuit of energy independence. For nuclear process heat to be utilized, intermediate heat exchange is required to transfer heat from the NGNP to the hydrogen plant or oil recovery field in the most efficient way possible. Development of nuclear reactor - process heat technology has intensified the interest in liquid metals as heat transfer media because of their ideal transport properties. Liquid metal heat exchangers are not new in practical applications. An important rational for considering liquid metals is the potential convective heat transfer is among the highest known. Thus explains the interest in liquid metals as coolant for intermediate heat exchange from NGNP. For process heat it is desired that, intermediate heat exchangers (IHX) transfer heat from the NGNP in the most efficient way possible. The production of electric power at higher efficiency via the Brayton Cycle, and hydrogen production, requires both heat at higher temperatures and high effectiveness compact heat exchangers to transfer heat to either the power or process cycle. Compact heat exchangers maximize the heat transfer surface area per volume of heat exchanger; this has the benefit of reducing heat exchanger size and heat losses. High temperature IHX design requirements are governed in part by the allowable temperature drop between the outlet and inlet of the NGNP. In order to improve the characteristics of heat transfer, liquid metal phase change heat exchangers may be more effective and efficient. This paper explores the overall heat transfer characteristics and pressure drop of the phase change heat exchanger with Na as the heat exchanger coolant. In order to design a very efficient and effective heat exchanger one must optimize the design such that we have a high heat transfer and a lower pressure drop, but there is always a trade-off between them. Based on NGNP operational parameters, a heat exchanger analysis with the sodium phase change will be presented to show that the heat exchanger has the potential for highly effective heat transfer, within a small volume at reasonable cost.

  14. Heat exchanger device and method for heat removal or transfer

    DOE Patents [OSTI]

    Koplow, Jeffrey P.

    2015-12-08

    Systems and methods for a forced-convection heat exchanger are provided. In one embodiment, heat is transferred to or from a thermal load in thermal contact with a heat conducting structure, across a narrow air gap, to a rotating heat transfer structure immersed in a surrounding medium such as air.

  15. Heat exchanger device and method for heat removal or transfer

    DOE Patents [OSTI]

    Koplow, Jeffrey P

    2015-03-24

    Systems and methods for a forced-convection heat exchanger are provided. In one embodiment, heat is transferred to or from a thermal load in thermal contact with a heat conducting structure, across a narrow air gap, to a rotating heat transfer structure immersed in a surrounding medium such as air.

  16. Heat exchanger device and method for heat removal or transfer

    DOE Patents [OSTI]

    Koplow, Jeffrey P. (San Ramon, CA)

    2012-07-24

    Systems and methods for a forced-convection heat exchanger are provided. In one embodiment, heat is transferred to or from a thermal load in thermal contact with a heat conducting structure, across a narrow air gap, to a rotating heat transfer structure immersed in a surrounding medium such as air.

  17. Heat exchanger device and method for heat removal or transfer

    DOE Patents [OSTI]

    Koplow, Jeffrey P

    2013-12-10

    Systems and methods for a forced-convection heat exchanger are provided. In one embodiment, heat is transferred to or from a thermal load in thermal contact with a heat conducting structure, across a narrow air gap, to a rotating heat transfer structure immersed in a surrounding medium such as air.

  18. Heat exchanger-accumulator

    DOE Patents [OSTI]

    Ecker, Amir L.

    1980-01-01

    What is disclosed is a heat exchanger-accumulator for vaporizing a refrigerant or the like, characterized by an upright pressure vessel having a top, bottom and side walls; an inlet conduit eccentrically and sealingly penetrating through the top; a tubular overflow chamber disposed within the vessel and sealingly connected with the bottom so as to define an annular outer volumetric chamber for receiving refrigerant; a heat transfer coil disposed in the outer volumetric chamber for vaporizing the liquid refrigerant that accumulates there; the heat transfer coil defining a passageway for circulating an externally supplied heat exchange fluid; transferring heat efficiently from the fluid; and freely allowing vaporized refrigerant to escape upwardly from the liquid refrigerant; and a refrigerant discharge conduit penetrating sealingly through the top and traversing substantially the length of the pressurized vessel downwardly and upwardly such that its inlet is near the top of the pressurized vessel so as to provide a means for transporting refrigerant vapor from the vessel. The refrigerant discharge conduit has metering orifices, or passageways, penetrating laterally through its walls near the bottom, communicating respectively interiorly and exteriorly of the overflow chamber for controllably carrying small amounts of liquid refrigerant and oil to the effluent stream of refrigerant gas.

  19. Guide to Geothermal Heat Pumps

    SciTech Connect (OSTI)

    2011-02-01

    Geothermal heat pumps, also known as ground source heat pumps, geoexchange, water-source, earth-coupled, and earth energy heat pumps, take advantage of this resource and represent one of the most efficient and durable options on the market to heat and cool your home.

  20. Electrochemical heat engine

    DOE Patents [OSTI]

    Elliott, Guy R. B. (Los Alamos, NM); Holley, Charles E. (Alcalde, NM); Houseman, Barton L. (Cockeysville, MD); Sibbitt, Jr., Wilmer L. (Albuquerque, NM)

    1978-01-01

    Electrochemical heat engines produce electrochemical work, and mechanical motion is limited to valve and switching actions as the heat-to-work cycles are performed. The electrochemical cells of said heat engines use molten or solid electrolytes at high temperatures. One or more reactions in the cycle will generate a gas at high temperature which can be condensed at a lower temperature with later return of the condensate to electrochemical cells. Sodium, potassium, and cesium are used as the working gases for high temperature cells (above 600 K) with halogen gases or volatile halides being used at lower temperature. Carbonates and halides are used as molten electrolytes and the solid electrolyte in these melts can also be used as a cell separator.

  1. Acoustical heat pumping engine

    DOE Patents [OSTI]

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

    1983-08-16

    The disclosure is directed to an acoustical heat pumping engine without moving seals. A tubular housing holds a compressible fluid capable of supporting an acoustical standing wave. An acoustical driver is disposed at one end of the housing and the other end is capped. A second thermodynamic medium is disposed in the housing near to but spaced from the capped end. Heat is pumped along the second thermodynamic medium toward the capped end as a consequence both of the pressure oscillation due to the driver and imperfect thermal contact between the fluid and the second thermodynamic medium. 2 figs.

  2. Acoustical heat pumping engine

    DOE Patents [OSTI]

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

    1983-08-16

    The disclosure is directed to an acoustical heat pumping engine without moving seals. A tubular housing holds a compressible fluid capable of supporting an acoustical standing wave. An acoustical driver is disposed at one end of the housing and the other end is capped. A second thermodynamic medium is disposed in the housing near to but spaced from the capped end. Heat is pumped along the second thermodynamic medium toward the capped end as a consequence both of the pressure oscillation due to the driver and imperfect thermal contact between the fluid and the second thermodynamic medium.

  3. Solar industrial process heat

    SciTech Connect (OSTI)

    Lumsdaine, E.

    1981-04-01

    The aim of the assessment reported is to candidly examine the contribution that solar industrial process heat (SIPH) is realistically able to make in the near and long-term energy futures of the United States. The performance history of government and privately funded SIPH demonstration programs, 15 of which are briefly summarized, and the present status of SIPH technology are discussed. The technical and performance characteristics of solar industrial process heat plants and equipment are reviewed, as well as evaluating how the operating experience of over a dozen SIPH demonstration projects is influencing institutional acceptance and economoc projections. Implications for domestic energy policy and international implications are briefly discussed. (LEW)

  4. Air heating system

    DOE Patents [OSTI]

    Primeau, John J. (19800 Seminole Rd., Euclid, OH 44117)

    1983-03-01

    A self-starting, fuel-fired, air heating system including a vapor generator, a turbine, and a condenser connected in a closed circuit such that the vapor output from the vapor generator is conducted to the turbine and then to the condenser where it is condensed for return to the vapor generator. The turbine drives an air blower which passes air over the condenser for cooling the condenser. Also, a condensate pump is driven by the turbine. The disclosure is particularly concerned with the provision of heat exchanger and circuitry for cooling the condensed fluid output from the pump prior to its return to the vapor generator.

  5. Rechargeable Heat Battery's Secret Revealed

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

    Rechargeable Heat Battery Rechargeable Heat Battery's Secret Revealed Solar energy capture in chemical form makes it storable and transportable January 11, 2011 Contact: John Hules, JAHules@lbl.gov, +1 510 486 6008 2011-01-11-Heat-Battery.jpg A molecule of fulvalene diruthenium, seen in diagram, changes its configuration when it absorbs heat, and later releases heat when it snaps back to its original shape. Image: Jeffrey Grossman Broadly speaking, there have been two approaches to capturing the

  6. Heat distribution ceramic processing method

    DOE Patents [OSTI]

    Tiegs, Terry N. (Lenoir City, TN); Kiggans, Jr., James O. (Oak Ridge, TN)

    2001-01-01

    A multi-layered heat distributor system is provided for use in a microwave process. The multi-layered heat distributors includes a first inner layer of a high thermal conductivity heat distributor material, a middle insulating layer and an optional third insulating outer layer. The multi-layered heat distributor system is placed around the ceramic composition or article to be processed and located in a microwave heating system. Sufficient microwave energy is applied to provide a high density, unflawed ceramic product.

  7. Tax Credits, Rebates & Savings | Department of Energy

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

    Washers, Dishwasher, RefrigeratorsFreezers, Equipment Insulation, Water Heaters, Lighting, Heat Pumps, DuctAir sealing, Building Insulation, Windows previous 5 6 7 8 9 10 11 12 1...

  8. Wastewater heat recovery apparatus

    DOE Patents [OSTI]

    Kronberg, J.W.

    1992-09-01

    A heat recovery system is described with a heat exchanger and a mixing valve. A drain trap includes a heat exchanger with an inner coiled tube, baffle plate, wastewater inlet, wastewater outlet, cold water inlet, and preheated water outlet. Wastewater enters the drain trap through the wastewater inlet, is slowed and spread by the baffle plate, and passes downward to the wastewater outlet. Cold water enters the inner tube through the cold water inlet and flows generally upward, taking on heat from the wastewater. This preheated water is fed to the mixing valve, which includes a flexible yoke to which are attached an adjustable steel rod, two stationary zinc rods, and a pivoting arm. The free end of the arm forms a pad which rests against a valve seat. The rods and pivoting arm expand or contract as the temperature of the incoming preheated water changes. The zinc rods expand more than the steel rod, flexing the yoke and rotating the pivoting arm. The pad moves towards the valve seat as the temperature of the preheated water rises, and away as the temperature falls, admitting a variable amount of hot water to maintain a nearly constant average process water temperature. 6 figs.

  9. Wastewater heat recovery apparatus

    DOE Patents [OSTI]

    Kronberg, James W.

    1992-01-01

    A heat recovery system with a heat exchanger and a mixing valve. A drain trap includes a heat exchanger with an inner coiled tube, baffle plate, wastewater inlet, wastewater outlet, cold water inlet, and preheated water outlet. Wastewater enters the drain trap through the wastewater inlet, is slowed and spread by the baffle plate, and passes downward to the wastewater outlet. Cold water enters the inner tube through the cold water inlet and flows generally upward, taking on heat from the wastewater. This preheated water is fed to the mixing valve, which includes a flexible yoke to which are attached an adjustable steel rod, two stationary zinc rods, and a pivoting arm. The free end of the arm forms a pad which rests against a valve seat. The rods and pivoting arm expand or contract as the temperature of the incoming preheated water changes. The zinc rods expand more than the steel rod, flexing the yoke and rotating the pivoting arm. The pad moves towards the valve seat as the temperature of the preheated water rises, and away as the temperature falls, admitting a variable amount of hot water to maintain a nearly constant average process water temperature.

  10. Heating element support clip

    DOE Patents [OSTI]

    Sawyer, William C. (Salida, CA)

    1995-01-01

    An apparatus for supporting a heating element in a channel formed in a heater base is disclosed. A preferred embodiment includes a substantially U-shaped tantalum member. The U-shape is characterized by two substantially parallel portions of tantalum that each have an end connected to opposite ends of a base portion of tantalum. The parallel portions are each substantially perpendicular to the base portion and spaced apart a distance not larger than a width of the channel and not smaller than a width of a graphite heating element. The parallel portions each have a hole therein, and the centers of the holes define an axis that is substantially parallel to the base portion. An aluminum oxide ceramic retaining pin extends through the holes in the parallel portions and into a hole in a wall of the channel to retain the U-shaped member in the channel and to support the graphite heating element. The graphite heating element is confined by the parallel portions of tantalum, the base portion of tantalum, and the retaining pin. A tantalum tube surrounds the retaining pin between the parallel portions of tantalum.

  11. Heating element support clip

    DOE Patents [OSTI]

    Sawyer, W.C.

    1995-08-15

    An apparatus for supporting a heating element in a channel formed in a heater base is disclosed. A preferred embodiment includes a substantially U-shaped tantalum member. The U-shape is characterized by two substantially parallel portions of tantalum that each have an end connected to opposite ends of a base portion of tantalum. The parallel portions are each substantially perpendicular to the base portion and spaced apart a distance not larger than a width of the channel and not smaller than a width of a graphite heating element. The parallel portions each have a hole therein, and the centers of the holes define an axis that is substantially parallel to the base portion. An aluminum oxide ceramic retaining pin extends through the holes in the parallel portions and into a hole in a wall of the channel to retain the U-shaped member in the channel and to support the graphite heating element. The graphite heating element is confined by the parallel portions of tantalum, the base portion of tantalum, and the retaining pin. A tantalum tube surrounds the retaining pin between the parallel portions of tantalum. 6 figs.

  12. Heat exchange assembly

    DOE Patents [OSTI]

    Lowenstein, Andrew; Sibilia, Marc; Miller, Jeffrey; Tonon, Thomas S.

    2004-06-08

    A heat exchange assembly comprises a plurality of plates disposed in a spaced-apart arrangement, each of the plurality of plates includes a plurality of passages extending internally from a first end to a second end for directing flow of a heat transfer fluid in a first plane, a plurality of first end-piece members equaling the number of plates and a plurality of second end-piece members also equaling the number of plates, each of the first and second end-piece members including a recessed region adapted to fluidly connect and couple with the first and second ends of the plate, respectively, and further adapted to be affixed to respective adjacent first and second end-piece members in a stacked formation, and each of the first and second end-piece members further including at least one cavity for enabling entry of the heat transfer fluid into the plate, exit of the heat transfer fluid from the plate, or 180.degree. turning of the fluid within the plate to create a serpentine-like fluid flow path between points of entry and exit of the fluid, and at least two fluid conduits extending through the stacked plurality of first and second end-piece members for providing first fluid connections between the parallel fluid entry points of adjacent plates and a fluid supply inlet, and second fluid connections between the parallel fluid exit points of adjacent plates and a fluid discharge outlet so that the heat transfer fluid travels in parallel paths through each respective plate.

  13. Project Profile: Heat Transfer and Latent Heat Storage in Inorganic...

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

    sensible heat storage technology or the dual-media (solid and fluid) heat storage technology by reducing the amount of storage media and corresponding container size 37%-56%. ...

  14. Fast reactor power plant design having heat pipe heat exchanger

    DOE Patents [OSTI]

    Huebotter, P.R.; McLennan, G.A.

    1984-08-30

    The invention relates to a pool-type fission reactor power plant design having a reactor vessel containing a primary coolant (such as liquid sodium), and a steam expansion device powered by a pressurized water/steam coolant system. Heat pipe means are disposed between the primary and water coolants to complete the heat transfer therebetween. The heat pipes are vertically oriented, penetrating the reactor deck and being directly submerged in the primary coolant. A U-tube or line passes through each heat pipe, extended over most of the length of the heat pipe and having its walls spaced from but closely proximate to and generally facing the surrounding walls of the heat pipe. The water/steam coolant loop includes each U-tube and the steam expansion device. A heat transfer medium (such as mercury) fills each of the heat pipes. The thermal energy from the primary coolant is transferred to the water coolant by isothermal evaporation-condensation of the heat transfer medium between the heat pipe and U-tube walls, the heat transfer medium moving within the heat pipe primarily transversely between these walls.

  15. Fast reactor power plant design having heat pipe heat exchanger

    DOE Patents [OSTI]

    Huebotter, Paul R.; McLennan, George A.

    1985-01-01

    The invention relates to a pool-type fission reactor power plant design having a reactor vessel containing a primary coolant (such as liquid sodium), and a steam expansion device powered by a pressurized water/steam coolant system. Heat pipe means are disposed between the primary and water coolants to complete the heat transfer therebetween. The heat pipes are vertically oriented, penetrating the reactor deck and being directly submerged in the primary coolant. A U-tube or line passes through each heat pipe, extended over most of the length of the heat pipe and having its walls spaced from but closely proximate to and generally facing the surrounding walls of the heat pipe. The water/steam coolant loop includes each U-tube and the steam expansion device. A heat transfer medium (such as mercury) fills each of the heat pipes. The thermal energy from the primary coolant is transferred to the water coolant by isothermal evaporation-condensation of the heat transfer medium between the heat pipe and U-tube walls, the heat transfer medium moving within the heat pipe primarily transversely between these walls.

  16. 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,

  17. Optical heat flux gauge

    DOE Patents [OSTI]

    Noel, B.W.; Borella, H.M.; Cates, M.R.; Turley, W.D.; MacArthur, C.D.; Cala, G.C.

    1991-04-09

    A heat flux gauge is disclosed comprising first and second thermographic phosphor layers separated by a layer of a thermal insulator, wherein each thermographic layer comprises a plurality of respective thermographic sensors in a juxtaposed relationship with respect to each other. The gauge may be mounted on a surface with the first thermographic phosphor in contact with the surface. A light source is directed at the gauge, causing the phosphors to luminesce. The luminescence produced by the phosphors is collected and its spectra analyzed in order to determine the heat flux on the surface. First and second phosphor layers must be different materials to assure that the spectral lines collected will be distinguishable. 9 figures.

  18. Heat transport system

    DOE Patents [OSTI]

    Harkness, Samuel D. (McMurray, PA)

    1982-01-01

    A falling bed of ceramic particles receives neutron irradiation from a neutron-producing plasma and thereby transports energy as heat from the plasma to a heat exchange location where the ceramic particles are cooled by a gas flow. The cooled ceramic particles are elevated to a location from which they may again pass by gravity through the region where they are exposed to neutron radiation. Ceramic particles of alumina, magnesia, silica and combinations of these materials are contemplated as high-temperature materials that will accept energy from neutron irradiation. Separate containers of material incorporating lithium are exposed to the neutron flux for the breeding of tritium that may subsequently be used in neutron-producing reactions. The falling bed of ceramic particles includes velocity partitioning between compartments near to the neutron-producing plasma and compartments away from the plasma to moderate the maximum temperature in the bed.

  19. Heat transfer probe

    DOE Patents [OSTI]

    Frank, Jeffrey I.; Rosengart, Axel J.; Kasza, Ken; Yu, Wenhua; Chien, Tai-Hsin; Franklin, Jeff

    2006-10-10

    Apparatuses, systems, methods, and computer code for, among other things, monitoring the health of samples such as the brain while providing local cooling or heating. A representative device is a heat transfer probe, which includes an inner channel, a tip, a concentric outer channel, a first temperature sensor, and a second temperature sensor. The inner channel is configured to transport working fluid from an inner inlet to an inner outlet. The tip is configured to receive at least a portion of the working fluid from the inner outlet. The concentric outer channel is configured to transport the working fluid from the inner outlet to an outer outlet. The first temperature sensor is coupled to the tip, and the second temperature sensor spaced apart from the first temperature sensor.

  20. Heat-Exchanger Development

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

    Heat-Exchanger Development - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Fuel Cycle Defense Waste Management Programs

  1. Total Space Heat-

    Gasoline and Diesel Fuel Update (EIA)

    Cooling ... 96.7 33.7 8.1 6.6 7.5 20.2 2.9 5.8 1.1 2.4 8.4 Buildings with Water Heating ..... 98.0 34.7 7.8 6.6 8.0 20.1 3.0 5.8 1.1 2.4 8.5 Note: Due to rounding,...

  2. 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...

  3. Industrial Process Heating - Technology Assessment

    Office of Environmental Management (EM)

    Industrial Process Heating - Technology Assessment 1 2 Contents 3 4 1. Introduction to the Technology/System ............................................................................................... 2 5 1.1. Industrial Process Heating Overview ............................................................................................ 2 6 2. Technology Assessment and Potential ................................................................................................. 6 7 2.1. Status

  4. Residential heating oil price increases

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

    heating oil price increases The average retail price for home heating oil rose 11.2 cents from a week ago to 2.91 per gallon. That's down 1.33 from a year ago, based on the...

  5. Residential heating oil price decreases

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

    heating oil price increases The average retail price for home heating oil rose 1.8 cents from a week ago to 2.08 per gallon. That's down 72 cents from a year ago, based on the...

  6. Residential heating oil price decreases

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

    heating oil price decreases The average retail price for home heating oil fell 3 cents from a week ago to 2.33 per gallon. That's down 89 cents from a year ago, based on the...

  7. Residential heating oil price decreases

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

    heating oil price decreases The average retail price for home heating oil fell 1.8 cents from a week ago to 2.82 per gallon. That's down 1.36 from a year ago, based on the...

  8. Residential heating oil price decreases

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

    heating oil price decreases The average retail price for home heating oil fell 1.5 cents from a week ago to 2.36 per gallon. That's down 97 cents from a year ago, based on the...

  9. Residential heating oil prices increase

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

    heating oil prices increase The average retail price for home heating oil rose 12 cents from a week ago to 4.18 per gallon. That's up 13 cents from a year ago, based on the...

  10. Residential heating oil price increases

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

    5, 2015 Residential heating oil price increases The average retail price for home heating oil rose 14.7 cents from a week ago to 3.19 per gallon. That's down 1.06 from a year...

  11. Residential heating oil price decreases

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

    heating oil price decreases The average retail price for home heating oil fell 17.7 cents from a week ago to 3.03 per gallon. That's down 1.09 from a year ago, based on the...

  12. Residential heating oil prices increase

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

    5, 2014 Residential heating oil prices increase The average retail price for home heating oil rose 6.5 cents from a week ago to 4.24 per gallon. That's up 14.9 cents from a year...

  13. Residential heating oil price decreases

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

    heating oil price decreases The average retail price for home heating oil fell 4.5 cents from a week ago to 2.21 per gallon. That's down 87 cents from a year ago, based on the...

  14. Residential heating oil price decreases

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

    heating oil price decreases The average retail price for home heating oil fell 2.3 cents from a week ago to 2.38 per gallon. That's down 99 cents from a year ago, based on the...

  15. Residential heating oil prices decline

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

    heating oil price decreases The average retail price for home heating oil fell 2 cents from a week ago to 3.36 per gallon. That's down 52.5 cents from a year ago, based on the...

  16. Residential heating oil prices increase

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

    heating oil prices increase The average retail price for home heating oil rose 2.9 cents from a week ago to 3.98 per gallon. That's up 6-tenths of a penny from a year ago, based...

  17. Residential heating oil price decreases

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

    heating oil price decreases The average retail price for home heating oil fell 1.9 cents from a week ago to 2.16 per gallon. That's down 75 cents from a year ago, based on the...

  18. Residential heating oil price increases

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

    9, 2015 Residential heating oil price increases The average retail price for home heating oil rose 11.7 cents from a week ago to 3.03 per gallon. That's down 1.20 from a year...

  19. Residential heating oil price decreases

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

    heating oil price increases The average retail price for home heating oil rose 6-tenths of a cent from a week ago to 2.18 per gallon. That's down 79 cents from a year ago, based...

  20. Residential heating oil price decreases

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

    heating oil price decreases The average retail price for home heating oil fell 5.1 cents from a week ago to 2.11 per gallon. That's down 72 cents from a year ago, based on the...

  1. Residential heating oil prices available

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

    heating oil prices available The average retail price for home heating oil is 3.52 per gallon. That's down 32.7 cents from a year ago, based on the U.S. Energy Information...

  2. Residential heating oil price decreases

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

    7, 2014 Residential heating oil price decreases The average retail price for home heating oil fell 7.8 cents from a week ago to 3.14 per gallon. That's down 81.1 cents from a year...

  3. Residential heating oil price decreases

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

    heating oil price decreases The average retail price for home heating oil fell 5 cents from a week ago to 2.06 per gallon. That's down 75 cents from a year ago, based on the...

  4. Residential heating oil price decreases

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

    6, 2014 Residential heating oil price decreases The average retail price for home heating oil rose 1.6 cents from a week ago to 4.24 per gallon. That's up 8.9 cents from a year...

  5. Residential heating oil prices increase

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

    heating oil prices increase The average retail price for home heating oil rose 5.4 cents from a week ago to 4.04 per gallon. That's up 4.9 cents from a year ago, based on the...

  6. Residential heating oil prices increase

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

    3, 2014 Residential heating oil prices increase The average retail price for home heating oil rose 4.4 cents from a week ago to 4.06 per gallon. That's up 4.1 cents from a year...

  7. Residential heating oil prices decrease

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

    heating oil prices decrease The average retail price for home heating oil fell 1.7 cents from a week ago to 4.02 per gallon. That's up 1.7 cents from a year ago, based on the...

  8. Residential heating oil price decreases

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

    heating oil price decreases The average retail price for home heating oil fell 7.6 cents from a week ago to 2.26 per gallon. That's down 89 cents from a year ago, based on the...

  9. Residential heating oil price decreases

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

    heating oil price decreases The average retail price for home heating oil fell 10.5 cents from a week ago to 3.22 per gallon. That's down 73.6 cents from a year ago, based on the...

  10. Residential heating oil prices decrease

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

    9, 2014 Residential heating oil price decreases The average retail price for home heating oil fell 2.9 cents from a week ago to 3.45 per gallon. That's down 36.6 cents from a year...

  11. Residential heating oil price decreases

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

    heating oil price decreases The average retail price for home heating oil fell 8 cents from a week ago to 3.21 per gallon. That's down 98.7 cents from a year ago, based on the...

  12. Residential heating oil price decreases

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

    4 Residential heating oil price decreases The average retail price for home heating oil fell 1.6 cents from a week ago to 3.42 per gallon. That's down 39.5 cents from a year ago,...

  13. Residential heating oil price decreases

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

    heating oil price decreases The average retail price for home heating oil fell 3.8 cents from a week ago to 3.33 per gallon. That's down 59.1 cents from a year ago, based on the...

  14. Residential heating oil prices decline

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

    9, 2014 Residential heating oil price decreases The average retail price for home heating oil fell 3.3 cents from a week ago to 3.38 per gallon. That's down 43.9 cents from a year...

  15. Residential heating oil price decreases

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

    heating oil price decreases The average retail price for home heating oil fell 3.5 cents from a week ago to 2.18 per gallon. That's down 87 cents from a year ago, based on the...

  16. Residential heating oil prices decrease

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

    5, 2014 Residential heating oil prices decrease The average retail price for home heating oil fell 1.8 cents from a week ago to 4.00 per gallon. That's down 2-tenths of a cent...

  17. Residential heating oil prices decline

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

    heating oil price decreases The average retail price for home heating oil fell 6.3 cents from a week ago to 3.08 per gallon. That's down 90.3 cents from a year ago, based on the...

  18. Residential heating oil price decreases

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

    5, 2014 Residential heating oil price decreases The average retail price for home heating oil fell 1.9 cents from a week ago to 3.43 per gallon. That's down 39 cents from a year...

  19. Residential heating oil price decreases

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

    heating oil price decreases The average retail price for home heating oil fell 1.9 cents from a week ago to 2.80 per gallon. That's down 1.44 from a year ago, based on the...

  20. Residential heating oil price increases

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

    heating oil price increases The average retail price for home heating oil rose 10.3 cents from a week ago to 3.29 per gallon. That's down 93.7 cents from a year ago, based on the...

  1. Residential heating oil prices decline

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

    2, 2014 Residential heating oil prices decline The average retail price for home heating oil is 3.48 per gallon. That's down 4.5 cents from a week ago, based on the residential...

  2. Heating Oil and Propane Update

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

    Maps of states participating in Winter Fuels Survey Residential propane PADD map Residential heating oil PADD map

  3. Residential heating oil price decreases

    Gasoline and Diesel Fuel Update (EIA)

    heating oil price increases The average retail price for home heating oil rose 1 cent from a week ago to $2.09 per gallon. That's down 82 cents from a year ago, based on the residential heating fuel survey by the U.S. Energy Information Administration. Heating oil prices in the New England region are at $2.02 per gallon, up 8-tenths of a cent from last week, and down 85

  4. Residential heating oil price decreases

    Gasoline and Diesel Fuel Update (EIA)

    Residential heating oil price increases The average retail price for home heating oil rose 1.1 cents from a week ago to $2.10 per gallon. That's down 94 cents from a year ago, based on the residential heating fuel survey by the U.S. Energy Information Administration. Heating oil prices in the New England region are at $2.04 per gallon, up 2.3 cents from last week, and down 95

  5. Residential heating oil price decreases

    Gasoline and Diesel Fuel Update (EIA)

    Residential heating oil price decreases The average retail price for home heating oil fell 9-tenths of a cent from a week ago to $2.09 per gallon. That's down $1.09 from a year ago, based on the residential heating fuel survey by the U.S. Energy Information Administration. Heating oil prices in the New England region are at $2.04 per gallon, down 1-tenth of a cent from last week, and down $1.11

  6. Residential heating oil price decreases

    Gasoline and Diesel Fuel Update (EIA)

    Residential heating oil price decreases The average retail price for home heating oil fell 5-tenths of a cent from a week ago to $2.09 per gallon. That's down $1.20 from a year ago, based on the residential heating fuel survey by the U.S. Energy Information Administration. Heating oil prices in the New England region are at $2.03 per gallon, down 9-tenths of a cent from last week, and down $1.22

  7. Residential heating oil price decreases

    Gasoline and Diesel Fuel Update (EIA)

    Residential heating oil price increases The average retail price for home heating oil rose 6-tenths of a cent from a week ago to $2.10 per gallon. That's down $1.11 from a year ago, based on the residential heating fuel survey by the U.S. Energy Information Administration. Heating oil prices in the New England region are at $2.04 per gallon, up 5-tenths of a cent from last week, and down $1.14

  8. Residential heating oil price decreases

    Gasoline and Diesel Fuel Update (EIA)

    Residential heating oil price increases The average retail price for home heating oil rose 2.6 cents from a week ago to $2.12 per gallon. That's down 91 cents from a year ago, based on the residential heating fuel survey by the U.S. Energy Information Administration. Heating oil prices in the New England region are at $2.06 per gallon, up 2.1 cents from last week, and down 94

  9. Residential heating oil prices increase

    Gasoline and Diesel Fuel Update (EIA)

    heating oil prices increase The average retail price for home heating oil rose 3.9 cents last week to $3.96 per gallon. That's down 2.6 cents from a year ago, based on the residential heating fuel survey by the U.S. Energy Information Administration. The price for heating oil in the New England region averaged 3.92 per gallon, up 5.2 cents from last week, and 1.7

  10. [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.

  11. Heat and mass transfer considerations in advanced heat pump systems

    SciTech Connect (OSTI)

    Panchal, C.B.; Bell, K.J.

    1992-08-01

    Advanced heat-pump cycles are being investigated for various applications. However, the working media and associated thermal design aspects require new concepts for maintaining high thermal effectiveness and phase equilibrium for achieving maximum possible thermodynamic advantages. In the present study, the heat- and mass-transfer processes in two heat-pump systems -- those based on absorption processes, and those using refrigerant mixtures -- are analyzed. The major technical barriers for achieving the ideal performance predicted by thermodynamic analysis are identified. The analysis provides general guidelines for the development of heat- and mass-transfer equipment for advanced heat-pump systems.

  12. Heat and mass transfer considerations in advanced heat pump systems

    SciTech Connect (OSTI)

    Panchal, C.B.; Bell, K.J.

    1992-01-01

    Advanced heat-pump cycles are being investigated for various applications. However, the working media and associated thermal design aspects require new concepts for maintaining high thermal effectiveness and phase equilibrium for achieving maximum possible thermodynamic advantages. In the present study, the heat- and mass-transfer processes in two heat-pump systems -- those based on absorption processes, and those using refrigerant mixtures -- are analyzed. The major technical barriers for achieving the ideal performance predicted by thermodynamic analysis are identified. The analysis provides general guidelines for the development of heat- and mass-transfer equipment for advanced heat-pump systems.

  13. Characterization of industrial process waste heat and input heat streams

    SciTech Connect (OSTI)

    Wilfert, G.L.; Huber, H.B.; Dodge, R.E.; Garrett-Price, B.A.; Fassbender, L.L.; Griffin, E.A.; Brown, D.R.; Moore, N.L.

    1984-05-01

    The nature and extent of industrial waste heat associated with the manufacturing sector of the US economy are identified. Industry energy information is reviewed and the energy content in waste heat streams emanating from 108 energy-intensive industrial processes is estimated. Generic types of process equipment are identified and the energy content in gaseous, liquid, and steam waste streams emanating from this equipment is evaluated. Matchups between the energy content of waste heat streams and candidate uses are identified. The resultant matrix identifies 256 source/sink (waste heat/candidate input heat) temperature combinations. (MHR)

  14. Energy 101: Geothermal Heat Pumps

    ScienceCinema (OSTI)

    None

    2013-05-29

    An energy-efficient heating and cooling alternative, the geothermal heat pump system moves heat from the ground to a building (or from a building to the ground) through a series of flexible pipe "loops" containing water. This edition of Energy 101 explores the benefits Geothermal and the science behind how it all comes together.

  15. Innovative Miniaturized Heat Pumps for Buildings: Modular Thermal Hub for Building Heating, Cooling and Water Heating

    SciTech Connect (OSTI)

    None

    2010-09-01

    BEETIT Project: Georgia Tech is using innovative components and system design to develop a new type of absorption heat pump. Georgia Techs new heat pumps are energy efficient, use refrigerants that do not emit greenhouse gases, and can run on energy from combustion, waste heat, or solar energy. Georgia Tech is leveraging enhancements to heat and mass transfer technology possible in microscale passages and removing hurdles to the use of heat-activated heat pumps that have existed for more than a century. Use of microscale passages allows for miniaturization of systems that can be packed as monolithic full-system packages or discrete, distributed components enabling integration into a variety of residential and commercial buildings. Compared to conventional heat pumps, Georgia Techs design innovations will create an absorption heat pump that is much smaller, has higher energy efficiency, and can also be mass produced at a lower cost and assembly time.

  16. Tips: Heat Pumps | Department of Energy

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

    climates, providing up to three times more heat than the energy they use. Today's heat pump can reduce your electricity use for heating by approximately 50% compared to...

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

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

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

  18. Heat Distribution Systems | Department of Energy

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

    Systems Heat Distribution Systems Heat Distribution Systems Radiators are used in steam and hot water heating. | Photo courtesy of iStockphotoJot Radiators are used in...

  19. Home Heating Systems | Department of Energy

    Office of Environmental Management (EM)

    separately, many homes use the following approaches: Active Solar Heating Uses the sun to heat either air or liquid and can serve as a supplemental heat source. Electric...

  20. 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...

  1. Reduce Radiation Losses from Heating Equipment

    Broader source: Energy.gov [DOE]

    This tip sheet describes how to save process heating energy and costs by reducing expensive heat losses from industrial heating equipment, such as furnaces.

  2. Absorption Heat Pumps | Department of Energy

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

    Heat & Cool » Heat Pump Systems » Absorption Heat Pumps Absorption Heat Pumps Absorption heat pumps are essentially air-source heat pumps driven not by electricity, but by a heat source such as natural gas, propane, solar-heated water, or geothermal-heated water. Because natural gas is the most common heat source for absorption heat pumps, they are also referred to as gas-fired heat pumps. There are also absorption (or gas-fired) coolers available that work on the same principle. Unlike

  3. 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

  4. Waste heat: Utilization and management

    SciTech Connect (OSTI)

    Sengupta, S.; Lee, S.S.

    1983-01-01

    This book is a presentation on waste heat management and utilization. Topics covered include cogeneration, recovery technology, low grade heat recovery, heat dispersion models, and ecological effects. The book focuses on the significant fraction of fuel energy that is rejected and expelled into the environment either as industrial waste or as a byproduct of installation/equipment operation. The feasibility of retrieving this heat and energy is covered, including technical aspects and potential applications. Illustrations demonstrate that recovery methods have become economical due to recent refinements. The book includes theory and practice concerning waste heat management and utilization.

  5. Heating Oil and Propane Update

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

    Data Users Q1: Why are data not collected over the summer? The residential pricing data collected on heating oil and propane prices are for the Winter Heating Fuels Survey. The purpose of this survey is to collect prices for these fuels as they are used for heating purposes. For the purposes of the survey, the winter heating season extends from October through March. However, EIA does publish spot prices for heating oil and propane throughout the year. In addition, some State Energy Offices

  6. Heating Oil and Propane Update

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

    FAQs for Respondents Q1: What is the purpose of this survey? The U.S. Energy Information Administration (EIA) Form EIA-877, "Winter Heating Fuels Telephone Survey," is designed to collect data on State-level stocks and residential prices of No. 2 heating oil and propane during the heating season. The data are used to monitor the prices of propane and No. 2 heating oil during the heating season, and to report to the Congress and others when requested. Q2: How does the survey work? The

  7. Absorption-heat-pump system

    DOE Patents [OSTI]

    Grossman, G.; Perez-Blanco, H.

    1983-06-16

    An improvement in an absorption heat pump cycle is obtained by adding adiabatic absorption and desorption steps to the absorber and desorber of the system. The adiabatic processes make it possible to obtain the highest temperature in the absorber before any heat is removed from it and the lowest temperature in the desorber before heat is added to it, allowing for efficient utilization of the thermodynamic availability of the heat supply stream. The improved system can operate with a larger difference between high and low working fluid concentrations, less circulation losses, and more efficient heat exchange than a conventional system.

  8. 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

  9. Solar heated rotary kiln

    DOE Patents [OSTI]

    Shell, Pamela K. (Tracy, CA)

    1984-01-01

    A solar heated rotary kiln utilized for decomposition of materials, such as zinc sulfate. The rotary kiln has an open end and is enclosed in a sealed container having a window positioned for directing solar energy into the open end of the kiln. The material to be decomposed is directed through the container into the kiln by a feed tube. The container is also provided with an outlet for exhaust gases and an outlet for spent solids, and rests on a tiltable base. The window may be cooled and kept clear of debris by coolant gases.

  10. Reformulated gasoline deal with Venezuela draws heat

    SciTech Connect (OSTI)

    Begley, R.

    1994-04-06

    A fight is brewing in Congress over a deal to let Venezuela off the hook in complying with the Clean Air Act reformulated gasoline rule. When Venezuela threatened to call for a GATT panel to challenge the rule as a trade barrier, the Clinton Administration negotiated to alter the rule, a deal that members of Congress are characterizing as {open_quotes}secret{close_quotes} and {open_quotes}back door.{close_quotes}

  11. Driving Demand: Door-to-Door Outreach & Tracking Impacts | Department...

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

    Designing Effective Incentives to Drive Residential Retrofit Program Participation Effective O&M Policy in Public Buildings How to Design and Market Energy Efficiency Programs to ...

  12. Cab Heating and Cooling

    SciTech Connect (OSTI)

    Damman, Dennis

    2005-10-31

    Schneider National, Inc., SNI, has concluded the Cab Heating and Cooling evaluation of onboard, engine off idling solutions. During the evaluation period three technologies were tested, a Webasto Airtronic diesel fired heater for cold weather operation, and two different approaches to cab cooling in warm weather, a Webasto Parking Cooler, phase change storage system and a Bergstrom Nite System, a 12 volt electrical air conditioning approach to cooling. Diesel fired cab heaters were concluded to provide adequate heat in winter environments down to 10 F. With a targeted idle reduction of 17%, the payback period is under 2 years. The Webasto Parking Cooler demonstrated the viability of this type of technology, but required significant driver involvement to achieve maximum performance. Drivers rated the technology as ''acceptable'', however, in individual discussions it became apparent they were not satisfied with the system limitations in hot weather, (over 85 F). The Bergstrom Nite system was recognized as an improvement by drivers and required less direct driver input to operate. While slightly improved over the Parking Cooler, the hot temperature limitations were only slightly better. Neither the Parking Cooler or the Nite System showed any payback potential at the targeted 17% idle reduction. Fleets who are starting at a higher idle baseline may have a more favorable payback.

  13. Measured heating system efficiency retrofits in eight manufactured (HUD-code) homes

    SciTech Connect (OSTI)

    Siegel, J.; Davis, B.; Francisco, P.; Palmiter, L.

    1998-07-01

    This report presents the results of field measurements of heating efficiency performed on eight all-electric manufactured homes sited in the Pacific Northwest with forced-air distribution systems. These homes, like more than four million existing manufactured homes in the US, were constructed to thermal specifications that were mandated by the US Department of Housing and Urban Development in 1976. The test protocol compares real-time measurements of furnace energy usage with energy usage during periods when zonal heaters heat the homes to the same internal temperature. By alternating between the furnace and zonal heaters on 2 hour cycles, a short-term coheat test is performed. Additional measurements, including blower door and duct tightness tests, are conducted to measure and characterize the home's tightness and duct leakage so that coheat test results might be linked to other measures of building performance. The testing was done at each home before and after an extensive duct sealing retrofit was performed. The average pre-retrofit system efficiency for these homes was 69%. After the retrofit, the average system efficiency increased to 83%. The average simple payback period for the retrofits ranges from 1 to 5 years in Western Oregon and 1 to 3 years in colder Eastern Oregon.

  14. Tips: Heat Pumps | Department of Energy

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

    electric heating, providing up to three times more heat than the energy they use. Today's heat pump can reduce your electricity use for heating by approximately 50% compared to...

  15. Residential Variable-Capacity Heat Pumps Sized to Heating Loads

    SciTech Connect (OSTI)

    Munk, Jeffrey D.; Jackson, Roderick K.; Odukomaiya, Adewale; Gehl, Anthony C.

    2014-01-01

    Variable capacity heat pumps are an emerging technology offering significant energy savings potential and improved efficiency. With conventional single-speed systems, it is important to appropriately size heat pumps for the cooling load as over-sizing would result in cycling and insufficient latent capacity required for humidity control. These appropriately sized systems are often under-sized for the heating load and require inefficient supplemental electric resistance heat to meet the heating demand. Variable capacity heat pumps address these shortcomings by providing an opportunity to intentionally size systems for the dominant heating season load without adverse effects of cycling or insufficient dehumidification in the cooling season. This intentionally-sized system could result in significant energy savings in the heating season, as the need for inefficient supplemental electric resistance heat is drastically reduced. This is a continuation of a study evaluating the energy consumption of variable capacity heat pumps installed in two unoccupied research homes in Farragut, a suburb of Knoxville, Tennessee. In this particular study, space conditioning systems are intentionally sized for the heating season loads to provide an opportunity to understand and evaluate the impact this would have on electric resistance heat use and dehumidification. The results and conclusions drawn through this research are valid and specific for portions of the Southeastern and Midwestern United States falling in the mixed-humid climate zone. While other regions in the U.S. do not experience this type of climate, this work provides a basis for, and can help understand the implications of other climate zones on residential space conditioning energy consumption. The data presented here will provide a framework for fine tuning residential building EnergyPlus models that are being developed.

  16. Tips: Heat Pumps | Department of Energy

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

    Heat Pumps Tips: Heat Pumps Heat pumps can be a cost-effective choice in moderate climates, especially if you heat your home with electricity. Heat pumps can be a cost-effective choice in moderate climates, especially if you heat your home with electricity. Heat pumps are the most efficient form of electric heating, providing up to three times more heat than the energy they use. Today's heat pump can reduce your electricity use for heating by approximately 50% compared to electric resistance

  17. Heat extraction from salinity-gradient solar ponds using heat pipe heat exchangers

    SciTech Connect (OSTI)

    Tundee, Sura; Terdtoon, Pradit; Sakulchangsatjatai, Phrut; Singh, Randeep; Akbarzadeh, Aliakbar

    2010-09-15

    This paper presents the results of experimental and theoretical analysis on the heat extraction process from solar pond by using the heat pipe heat exchanger. In order to conduct research work, a small scale experimental solar pond with an area of 7.0 m{sup 2} and a depth of 1.5 m was built at Khon Kaen in North-Eastern Thailand (16 27'N102 E). Heat was successfully extracted from the lower convective zone (LCZ) of the solar pond by using a heat pipe heat exchanger made from 60 copper tubes with 21 mm inside diameter and 22 mm outside diameter. The length of the evaporator and condenser section was 800 mm and 200 mm respectively. R134a was used as the heat transfer fluid in the experiment. The theoretical model was formulated for the solar pond heat extraction on the basis of the energy conservation equations and by using the solar radiation data for the above location. Numerical methods were used to solve the modeling equations. In the analysis, the performance of heat exchanger is investigated by varying the velocity of inlet air used to extract heat from the condenser end of the heat pipe heat exchanger (HPHE). Air velocity was found to have a significant influence on the effectiveness of heat pipe heat exchanger. In the present investigation, there was an increase in effectiveness by 43% as the air velocity was decreased from 5 m/s to 1 m/s. The results obtained from the theoretical model showed good agreement with the experimental data. (author)

  18. North Village Ground Source Heat Pumps

    Broader source: Energy.gov [DOE]

    Overview: Installation of Ground Source Heat Pumps. Replacement of Aging Heat Pumps. Alignment with Furmans Sustainability Goals.

  19. Skutterudite Thermoelectric Generator For Automotive Waste Heat...

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

    Skutterudite Thermoelectric Generator For Automotive Waste Heat Recovery Skutterudite Thermoelectric Generator For Automotive Waste Heat Recovery Skutterudite TE modules were...

  20. Geothermal Heat Pumps are Scoring High Marks

    SciTech Connect (OSTI)

    2000-08-01

    Geothermal Energy Program Office of Geothermal and Wind Technologies Geothermal Heat Pumps are Scoring High Marks Geothermal heat pumps, one of the clean energy technology stars Geothermal heat pumps (GHPs) are one of the most cost-effective heating, cooling, and water heating systems available for both residential and commercial buildings. GHPs extract heat from the ground during the heating season and discharge waste heat to the ground during the cooling season. The U.S. Environmental Protecti

  1. 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 ...

  2. Waste Heat Recovery Opportunities for Thermoelectric Generators...

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

    Waste Heat Recovery Opportunities for Thermoelectric Generators Waste Heat Recovery Opportunities for Thermoelectric Generators Thermoelectrics have unique advantages for...

  3. Design manual. [High temperature heat pump for heat recovery system

    SciTech Connect (OSTI)

    Burch, T.E.; Chancellor, P.D.; Dyer, D.F.; Maples, G.

    1980-01-01

    The design and performance of a waste heat recovery system which utilizes a high temperature heat pump and which is intended for use in those industries incorporating indirect drying processes are described. It is estimated that use of this heat recovery system in the paper, pulp, and textile industries in the US could save 3.9 x 10/sup 14/ Btu/yr. Information is included on over all and component design for the heat pump system, comparison of prime movers for powering the compressor, control equipment, and system economics. (LCL)

  4. Combined Heat and Power, Waste Heat, and District Energy

    Broader source: Energy.gov [DOE]

    Presentation—given at the Fall 2011 Federal Utility Partnership Working Group (FUPWG) meeting—covers combined heat and power (CHP) technologies and their applications.

  5. Buildings","All Buildings with Space Heating","Space-Heating...

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

    ... "District Chilled Water ......",50,49,23,4,"Q",39,"Q","Q" "Water-Heating Energy Sources" "(more than one may apply)" "Electricity ......",1546,1465...

  6. Heat pump having improved defrost system

    DOE Patents [OSTI]

    Chen, Fang C. (Knoxville, TN); Mei, Viung C. (Oak Ridge, TN); Murphy, Richard W. (Knoxville, TN)

    1998-01-01

    A heat pump system includes, in an operable relationship for transferring heat between an exterior atmosphere and an interior atmosphere via a fluid refrigerant: a compressor; an interior heat exchanger; an exterior heat exchanger; an accumulator; and means for heating the accumulator in order to defrost the exterior heat exchanger.

  7. Heat pump having improved defrost system

    DOE Patents [OSTI]

    Chen, F.C.; Mei, V.C.; Murphy, R.W.

    1998-12-08

    A heat pump system includes, in an operable relationship for transferring heat between an exterior atmosphere and an interior atmosphere via a fluid refrigerant: a compressor; an interior heat exchanger; an exterior heat exchanger; an accumulator; and means for heating the accumulator in order to defrost the exterior heat exchanger. 2 figs.

  8. Ceramic heat exchanger

    DOE Patents [OSTI]

    LaHaye, Paul G. (Kennebunk, ME); Rahman, Faress H. (Portland, ME); Lebeau, Thomas P. E. (Portland, ME); Severin, Barbara K. (Biddeford, ME)

    1998-01-01

    A tube containment system. The tube containment system does not significantly reduce heat transfer through the tube wall. The contained tube is internally pressurized, and is formed from a ceramic material having high strength, high thermal conductivity, and good thermal shock resistance. The tube containment system includes at least one ceramic fiber braid material disposed about the internally pressurized tube. The material is disposed about the tube in a predetermined axial spacing arrangement. The ceramic fiber braid is present in an amount sufficient to contain the tube if the tube becomes fractured. The tube containment system can also include a plurality of ceramic ring-shaped structures, in contact with the outer surface of the tube, and positioned between the tube and the ceramic fiber braid material, and/or at least one transducer positioned within tube for reducing the internal volume and, therefore, the energy of any shrapnel resulting from a tube fracture.

  9. Heat flux solarimeter

    SciTech Connect (OSTI)

    Sartarelli, A.; Vera, S.; Cyrulies, E.; Echarri, R.; Samson, I.

    2010-12-15

    The solarimeter presented in this work is easy to assemble. It is calibrated and its performance is validated by means of Hottel's method. Finally, the curves obtained with this solarimeter are compared to the ones obtained with a commercial solarimeter. This device is based on the evaluation of the heat flow in a metal rod. In consequence, measurements are not affected by ambient temperature variations. On the other hand, there is a linear relationship between the temperatures measured at the rod ends and the incident radiation, as can be concluded both from the theory of its operation and the calibration lines obtained. The results obtained from the global irradiance measurements in the area of Los Polvorines (Buenos Aires Province), together with a preliminary evaluation of the solarimeter's response time, are presented in this work. (author)

  10. Ceramic heat exchanger

    DOE Patents [OSTI]

    LaHaye, P.G.; Rahman, F.H.; Lebeau, T.P.; Severin, B.K.

    1998-06-16

    A tube containment system is disclosed. The tube containment system does not significantly reduce heat transfer through the tube wall. The contained tube is internally pressurized, and is formed from a ceramic material having high strength, high thermal conductivity, and good thermal shock resistance. The tube containment system includes at least one ceramic fiber braid material disposed about the internally pressurized tube. The material is disposed about the tube in a predetermined axial spacing arrangement. The ceramic fiber braid is present in an amount sufficient to contain the tube if the tube becomes fractured. The tube containment system can also include a plurality of ceramic ring-shaped structures, in contact with the outer surface of the tube, and positioned between the tube and the ceramic fiber braid material, and/or at least one transducer positioned within tube for reducing the internal volume and, therefore, the energy of any shrapnel resulting from a tube fracture. 6 figs.

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

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

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

  12. Micro thrust and heat generator

    DOE Patents [OSTI]

    Garcia, E.J.

    1998-11-17

    A micro thrust and heat generator have a means for providing a combustion fuel source to an ignition chamber of the micro thrust and heat generator. The fuel is ignited by a ignition means within the micro thrust and heat generator`s ignition chamber where it burns and creates a pressure. A nozzle formed from the combustion chamber extends outward from the combustion chamber and tappers down to a narrow diameter and then opens into a wider diameter where the nozzle then terminates outside of said combustion chamber. The pressure created within the combustion chamber accelerates as it leaves the chamber through the nozzle resulting in pressure and heat escaping from the nozzle to the atmosphere outside the micro thrust and heat generator. The micro thrust and heat generator can be microfabricated from a variety of materials, e.g., of polysilicon, on one wafer using surface micromachining batch fabrication techniques or high aspect ratio micromachining techniques (LIGA). 30 figs.

  13. Micro thrust and heat generator

    DOE Patents [OSTI]

    Garcia, Ernest J. (Albuquerque, NM)

    1998-01-01

    A micro thrust and heat generator has a means for providing a combustion fuel source to an ignition chamber of the micro thrust and heat generator. The fuel is ignited by a ignition means within the micro thrust and heat generator's ignition chamber where it burns and creates a pressure. A nozzle formed from the combustion chamber extends outward from the combustion chamber and tappers down to a narrow diameter and then opens into a wider diameter where the nozzle then terminates outside of said combustion chamber. The pressure created within the combustion chamber accelerates as it leaves the chamber through the nozzle resulting in pressure and heat escaping from the nozzle to the atmosphere outside the micro thrust and heat generator. The micro thrust and heat generator can be microfabricated from a variety of materials, e.g., of polysilicon, on one wafer using surface micromachining batch fabrication techniques or high aspect ratio micromachining techniques (LIGA).

  14. Heat exchanger and related methods

    DOE Patents [OSTI]

    Turner, Terry D.; McKellar, Michael G.

    2015-12-22

    Heat exchangers include a housing having an inlet and an outlet and forming a portion of a transition chamber. A heating member may form another portion of the transition chamber. The heating member includes a first end having a first opening and a second end having a second opening larger than the first opening. Methods of conveying a fluid include supplying a first fluid into a transition chamber of a heat exchanger, supplying a second fluid into the transition chamber, and altering a state of a portion of the first fluid with the second fluid. Methods of sublimating solid particles include conveying a first fluid comprising a material in a solid state into a transition chamber, heating the material to a gaseous state by directing a second fluid through a heating member and mixing the first fluid and the second fluid.

  15. Stirling and Vuilleumier heat pumps

    SciTech Connect (OSTI)

    Wurm, J.

    1990-01-01

    The book discuses the design, application, and performance evaluation of integrated engine-refrigerator heat pumps and provides an overview of heat pump theory, including a unique comparative analysis of six integrated Stirling and Vuilleumier heat pumps and their advantages in applications. It also evaluates the effect of key components on performance; lists and documents computer programs for comparative analysis; and summarizes current hardware development programs.

  16. Enhanced heat transfer using nanofluids

    DOE Patents [OSTI]

    Choi, Stephen U. S. (Lisle, IL); Eastman, Jeffrey A. (Naperville, IL)

    2001-01-01

    This invention is directed to a method of and apparatus for enhancing heat transfer in fluids such as deionized water. ethylene glycol, or oil by dispersing nanocrystalline particles of substances such as copper, copper oxide, aluminum oxide, or the like in the fluids. Nanocrystalline particles are produced and dispersed in the fluid by heating the substance to be dispersed in a vacuum while passing a thin film of the fluid near the heated substance. The fluid is cooled to control its vapor pressure.

  17. ARM - Measurement - Radiative heating rate

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

    govMeasurementsRadiative heating rate ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Radiative heating rate The heating rate due to the divergence of long and shortwave radiative flux. Categories Atmospheric State, Radiometric Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a

  18. Heat sinking for printed circuitry

    DOE Patents [OSTI]

    Wilson, S.K.; Richardson, G.; Pinkerton, A.L.

    1984-09-11

    A flat pak or other solid-state device mounted on a printed circuit board directly over a hole extends therethrough so that the bottom of the pak or device extends beyond the bottom of the circuit board. A heat sink disposed beneath the circuit board contacts the bottom of the pak or device and provides direct heat sinking thereto. Pressure may be applied to the top of the pak or device to assure good mechanical and thermal contact with the heat sink.

  19. Heat pump with freeze-up prevention

    DOE Patents [OSTI]

    Ecker, Amir L.

    1981-01-01

    What is disclosed is a heat pump apparatus for conditioning a fluid characterized by a fluid handler and path for circulating the fluid in heat exchange relationship with a refrigerant fluid; at least two refrigerant heat exchangers, one for effecting heat exchange with the fluid and a second for effecting heat exchange between refrigerant and a heat exchange fluid and the ambient air; a compressor for efficiently compressing the refrigerant; at least one throttling valve for throttling liquid refrigerant; a refrigerant circuit; refrigerant; a source of heat exchange fluid; heat exchange fluid circulating device and heat exchange fluid circuit for circulating the heat exchange fluid in heat exchange relationship with the refrigerant; and valves or switches for selecting the heat exchangers and direction of flow of the refrigerant therethrough for selecting a particular mode of operation. The heat exchange fluid prevents freeze up of the second heat exchanger by keeping the temperature above the dew point; and, optionally, provides heat for efficient operation.

  20. Heat distribution by natural convection

    SciTech Connect (OSTI)

    Balcomb, J.D.

    1985-01-01

    Natural convection can provide adequate heat distribution in many situtations that arise in buildings. This is appropriate, for example, in passive solar buildings where some rooms tend to be more strongly solar heated than others or to reduce the number of heating units required in a building. Natural airflow and heat transport through doorways and other internal building apertures is predictable and can be accounted for in the design. The nature of natural convection is described, and a design chart is presented appropriate to a simple, single-doorway situation. Natural convective loops that can occur in buildings are described and a few design guidelines are presented.

  1. Industrial Process Heating - Technology Assessment

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

    ... in these 182 development areas: 183 Digital Control Equipment, 184 Reduction of ... Industrial Companies Manufacturing and Marketing Process Heating and Combustion 199 ...

  2. Geothermal Heat Pumps- Cooling Mode

    Broader source: Energy.gov [DOE]

    In summer, the fluid removes heat from the building and transfers it to the relatively cooler ground in order to cool the building.

  3. Sodium heat engine electrical feedthrough

    DOE Patents [OSTI]

    Weber, Neill (Dearborn, MI)

    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.

  4. Recover Heat from Boiler Blowdown

    Broader source: Energy.gov [DOE]

    This tip sheet on recovering heat from boiler blowdown provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

  5. Roadmap for Process Heating Technology

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

    ... fellowships and internships for graduate students * Lack of sufficient technical talent at ... Roadmap for Process Heating Technology March 16, 2001 21 Key Barriers * Perception that ...

  6. Residential heating oil prices increase

    Gasoline and Diesel Fuel Update (EIA)

    4, 2013 Residential heating oil prices increase The average retail price for home heating oil rose 2.9 cents from last week to $3.92 per gallon. That's down 11 cents from a year ago, based on the residential heating fuel survey by the U.S. Energy Information Administration. The price for heating oil in the New England region averaged 3.87 per gallon, up 2.5 cents from last week, but down 7.1 cents from a year earlier. This is Marlana Anderson

  7. Heat exchanger bypass test report

    SciTech Connect (OSTI)

    De Vries, M.L.

    1995-01-26

    This test report documents the results that were obtained while conducting the test procedure which bypassed the heat exchangers in the HC-21C sludge stabilization process. The test was performed on November 15, 1994 using WHC-SD-CP-TC-031, ``Heat Exchanger Bypass Test Procedure.`` The primary objective of the test procedure was to determine if the heat exchangers were contributing to condensation of moisture in the off-gas line. This condensation was observed in the rotameters. Also, a secondary objective was to determine if temperatures at the rotameters would be too high and damage them or make them inaccurate without the heat exchangers in place.

  8. heating | OpenEI Community

    Open Energy Info (EERE)

    ancient building system architect biomimicry building technology cooling cu daylight design problem energy use engineer fred andreas geothermal green building heat transfer...

  9. Future Heating | Open Energy Information

    Open Energy Info (EERE)

    London, England, United Kingdom Sector: Solar Product: Designs and installs solar passive water heating systems. Coordinates: 51.506325, -0.127144 Show Map Loading map......

  10. Cyclotron subharmonics resonant (CSR) heating

    SciTech Connect (OSTI)

    Abe, H.

    1994-01-01

    The cyclotron subharmonics resonant (CSR) heating mechanism is studied using particle simulation codes with an emphasis on the relationship between CSR and the nonlinear Landua damping.

  11. 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

  12. Heat Pump System Basics | Department of Energy

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

    Space Heating & Cooling » Heat Pump System Basics Heat Pump System Basics August 19, 2013 - 11:02am Addthis Like a refrigerator, heat pumps use electricity to move heat from a cool space into a warm space, making the cool space cooler and the warm space warmer. Because they move heat rather than generate heat, heat pumps can provide up to four times the amount of energy they consume. Air-Source Heat Pump Transfers heat between the inside of a building and the outside air. Ductless

  13. Heat treating of manufactured components

    DOE Patents [OSTI]

    Ripley, Edward B. (Knoxville, TN)

    2012-05-22

    An apparatus for heat treating manufactured components using microwave energy and microwave susceptor material is disclosed. The system typically includes an insulating vessel placed within a microwave applicator chamber. A moderating material is positioned inside the insulating vessel so that a substantial portion of the exterior surface of each component for heat treating is in contact with the moderating material.

  14. Heat reclaiming method and apparatus

    DOE Patents [OSTI]

    Jardine, Douglas M. (Colorado Springs, CO)

    1984-01-01

    Method and apparatus to extract heat by transferring heat from hot compressed refrigerant to a coolant, such as water, without exceeding preselected temperatures in the coolant and avoiding boiling in a water system by removing the coolant from direct or indirect contact with the hot refrigerant.

  15. Modular heat exchanger

    DOE Patents [OSTI]

    Giardina, Angelo R. [Marple Township, Delaware County, PA

    1981-03-03

    A shell and tube heat exchanger having a plurality of individually removable tube bundle modules. A lattice of structural steel forming rectangular openings therein is placed at each end of a cylindrical shell. Longitudinal structural members are placed in the shell between corners of the rectangular openings situated on opposite ends of the shell. Intermediate support members interconnect the longitudinal supports so as to increase the longitudinal supports rigidity. Rectangular parallelpiped tube bundle moldules occupy the space defined by the longitudinal supports and end supports and each include a rectangular tube sheet situated on each end of a plurality of tubes extending therethrough, a plurality of rectangular tube supports located between the tube sheets, and a tube bundle module stiffening structure disposed about the bundle's periphery and being attached to the tube sheets and tube supports. The corners of each tube bundle module have longitudinal framework members which are mateable with and supported by the longitudinal support members. Intermediate support members constitute several lattice, each of which is situate d in a plane between the end support members. The intermediate support members constituting the several lattice extend horizontally and vertically between longitudinal supports of adjacent tube module voids. An alternative embodiment for intermediate support members constitute a series of structural plates situated at the corners of the module voids and having recesses therein for receiving the respective longitudinal support members adjacent thereto, protrusions separating the recesses, and a plurality of struts situated between protrusions of adjacent structural plates.

  16. Modular heat exchanger

    DOE Patents [OSTI]

    Giardina, A.R.

    1981-03-03

    A shell and tube heat exchanger is described having a plurality of individually removable tube bundle modules. A lattice of structural steel forming rectangular openings therein is placed at each end of a cylindrical shell. Longitudinal structural members are placed in the shell between corners of the rectangular openings situated on opposite ends of the shell. Intermediate support members interconnect the longitudinal supports so as to increase the longitudinal supports rigidity. Rectangular parallelepiped tube bundle modules occupy the space defined by the longitudinal supports and end supports and each include a rectangular tube sheet situated on each end of a plurality of tubes extending there through, a plurality of rectangular tube supports located between the tube sheets, and a tube bundle module stiffening structure disposed about the bundle's periphery and being attached to the tube sheets and tube supports. The corners of each tube bundle module have longitudinal framework members which are mateable with and supported by the longitudinal support members. Intermediate support members constitute several lattices, each of which is situated in a plane between the end support members. The intermediate support members constituting the several lattices extend horizontally and vertically between longitudinal supports of adjacent tube module voids. An alternative embodiment for intermediate support members constitute a series of structural plates situated at the corners of the module voids and having recesses therein for receiving the respective longitudinal support members adjacent thereto, protrusions separating the recesses, and a plurality of struts situated between protrusions of adjacent structural plates. 12 figs.

  17. 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

  18. Winter Heating Fuels - Energy Information Administration

    Gasoline and Diesel Fuel Update (EIA)

    Winter Heating Fuels Click on the map to view state specific heating fuels data below | click to reset to U.S. values Click on map above to view state-specific heating fuel data Propane Heating oil Natural gas Electricity For more data on: Heating oil and propane prices - Heating Oil and Propane Update Propane stocks - Weekly Petroleum Status Report Heating oil/distillate stocks - Weekly Petroleum Status Report Natural gas storage - Weekly Natural Gas Storage Report Natural gas prices - Natural

  19. Winter Heating Fuels - Energy Information Administration

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

    Winter Heating Fuels Click on the map to view state specific heating fuels data below | click to reset to U.S. values Click on map above to view state-specific heating fuel data Propane Heating oil Natural gas Electricity For more data on: Heating oil and propane prices - Heating Oil and Propane Update Propane stocks - Weekly Petroleum Status Report Heating oil/distillate stocks - Weekly Petroleum Status Report Natural gas storage - Weekly Natural Gas Storage Report Natural gas prices - Natural

  20. Active Solar Heating | Department of Energy

    Energy Savers [EERE]

    Home Heating Systems » Active Solar Heating Active Solar Heating This North Carolina home gets most of its space heating from the passive solar design, but the solar thermal system supplies both domestic hot water and a secondary radiant floor heating system. | Photo courtesy of Jim Schmid Photography, NREL This North Carolina home gets most of its space heating from the passive solar design, but the solar thermal system supplies both domestic hot water and a secondary radiant floor heating

  1. Geothermal Heat Pumps | Department of Energy

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

    Heat Pumps Geothermal Heat Pumps Two commercial 36-ton geothermal heat pumps being used at the College of Southern Idaho. The Geothermal Technologies Office focuses only on electricity generation. For additional information about geothermal heating and cooling and ground source heat pumps, please visit the U.S. Department of Energy (DOE)'s Buildings Technologies Office. The geothermal heat pump, also known as the ground source heat pump, is a highly efficient renewable energy technology that is

  2. Active Solar Heating | Department of Energy

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

    Heat & Cool » Home Heating Systems » Active Solar Heating Active Solar Heating This North Carolina home gets most of its space heating from the passive solar design, but the solar thermal system supplies both domestic hot water and a secondary radiant floor heating system. | Photo courtesy of Jim Schmid Photography, NREL This North Carolina home gets most of its space heating from the passive solar design, but the solar thermal system supplies both domestic hot water and a secondary

  3. Intrinsically irreversible thermoacoustic heat engine

    SciTech Connect (OSTI)

    Wheatley, J.; Hofler, T.; Swift, G.W.; Migliori, A.

    1983-07-01

    Certain thermoacoustic effects are described which form the basis for a heat engine that is intrinsically irreversible in the sense that it requires thermal lags for its operation. After discussing several acoustical heating and cooling effects, including the behavior of a new structure called a ''thermoacoustic couple,'' we discuss structures that can be placed in acoustically resonant tubes to produce both substantial heat pumping effects and, for restricted heat inputs, large temperature differences. The results are analyzed quantitatively using a second-order thermoacoustic theory based on the work of Rott. The qualities of the acoustic engine are generalized to describe a class of intrinsically irreversible heat engines of which the present acoustic engine is a special case. Finally the results of analysis of several idealized intrinsically irreversible engines are presented. These suggest that the efficiency of such engines may be determined primarily by geometry or configuration rather than by temperature.

  4. Critical heat flux test apparatus

    DOE Patents [OSTI]

    Welsh, Robert E.; Doman, Marvin J.; Wilson, Edward C.

    1992-01-01

    An apparatus for testing, in situ, highly irradiated specimens at high temperature transients is provided. A specimen, which has a thermocouple device attached thereto, is manipulated into test position in a sealed quartz heating tube by a robot. An induction coil around a heating portion of the tube is powered by a radio frequency generator to heat the specimen. Sensors are connected to monitor the temperatures of the specimen and the induction coil. A quench chamber is located below the heating portion to permit rapid cooling of the specimen which is moved into this quench chamber once it is heated to a critical temperature. A vacuum pump is connected to the apparatus to collect any released fission gases which are analyzed at a remote location.

  5. High Temperature Heat Exchanger Project

    SciTech Connect (OSTI)

    Anthony E. Hechanova, Ph.D.

    2008-09-30

    The UNLV Research Foundation assembled a research consortium for high temperature heat exchanger design and materials compatibility and performance comprised of university and private industry partners under the auspices of the US DOE-NE Nuclear Hydrogen Initiative in October 2003. The objectives of the consortium were to conduct investigations of candidate materials for high temperature heat exchanger componets in hydrogen production processes and design and perform prototypical testing of heat exchangers. The initial research of the consortium focused on the intermediate heat exchanger (located between the nuclear reactor and hydrogen production plan) and the components for the hydrogen iodine decomposition process and sulfuric acid decomposition process. These heat exchanger components were deemed the most challenging from a materials performance and compatibility perspective

  6. AHAM Comments_Ex Parte Memo_July 8, 2015_Dishwasher Standards...

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

    ... to clean something when I'm paying for a machine that is supposed to clean them I would ... As discussed above, manufacturers report, and consumer feedback shows, signals of consumer ...

  7. AHAM Comments_Ex Parte Memo_July 8, 2015_Dishwasher Standards_FINAL (00039960).DOC

    Office of Environmental Management (EM)

    February 9, 2016 subject: Ex parte Communication, NOPR for Energy Conservation Standards for Residential Conventional Cooking Products, Docket No. EERE- 2014-BT-STD-0005 This memo memorializes the meeting between the Association of Home Appliance Manufacturers (AHAM) and the Department of Energy (DOE) on December 22, 2015, for inclusion in the public docket on the Notice of Proposed Rulemaking (NOPR) for Energy Conservation Standards for Residential Conventional Cooking Products, Docket No.

  8. AHAM Comments_Ex Parte Memo_July 8, 2015_Dishwasher Standards...

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

    ... p. 11-i p 4 the federal poverty level. 2 In 2015, the low-income ... 2 Annual Update of the HHS Poverty Guidelines, the Department of Health and ...

  9. Heat Distribution Systems | Department of Energy

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

    & Cool » Home Heating Systems » Heat Distribution Systems Heat Distribution Systems Radiators are used in steam and hot water heating. | Photo courtesy of ©iStockphoto/Jot Radiators are used in steam and hot water heating. | Photo courtesy of ©iStockphoto/Jot Heat is distributed through your home in a variety of ways. Forced-air systems use ducts that can also be used for central air conditioning and heat pump systems. Radiant heating systems also have unique heat distribution systems.

  10. Geothermal Heat Pumps | Department of Energy

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

    Heat & Cool » Heat Pump Systems » Geothermal Heat Pumps Geothermal Heat Pumps Watch how geothermal heat pumps heat and cool buildings by concentrating the naturally existing heat contained within the earth -- a clean, reliable, and renewable source of energy. Geothermal heat pumps (GHPs), sometimes referred to as GeoExchange, earth-coupled, ground-source, or water-source heat pumps, have been in use since the late 1940s. They use the constant temperature of the earth as the exchange medium

  11. Home Heating Systems | Department of Energy

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

    Heat & Cool » Home Heating Systems Home Heating Systems Home heating accounts for about 30 percent of the energy used in the home. | Photo courtesy iStockphoto.com Home heating accounts for about 30 percent of the energy used in the home. | Photo courtesy iStockphoto.com A variety of technologies are available for heating your house. In addition to heat pumps, which are discussed separately, many homes use the following approaches: Active Solar Heating Uses the sun to heat either air or

  12. Heat pipe with embedded wick structure

    DOE Patents [OSTI]

    Adkins, Douglas Ray (Albuquerque, NM); Shen, David S. (Albuquerque, NM); Tuck, Melanie R. (Albuquerque, NM); Palmer, David W. (Albuquerque, NM); Grafe, V. Gerald (Corrales, NM)

    1999-01-01

    A heat pipe has an embedded wick structure that maximizes capillary pumping capability. Heat from attached devices such as integrated circuits evaporates working fluid in the heat pipe. The vapor cools and condenses on a heat dissipation surface. The condensate collects in the wick structure, where capillary pumping returns the fluid to high heat areas.

  13. Heat pipe with embedded wick structure

    DOE Patents [OSTI]

    Adkins, Douglas Ray (Albuquerque, NM); Shen, David S. (Albuquerque, NM); Tuck, Melanie R. (Albuquerque, NM); Palmer, David W. (Albuquerque, NM); Grafe, V. Gerald (Corrales, NM)

    1998-01-01

    A heat pipe has an embedded wick structure that maximizes capillary pumping capability. Heat from attached devices such as integrated circuits evaporates working fluid in the heat pipe. The vapor cools and condenses on a heat dissipation surface. The condensate collects in the wick structure, where capillary pumping returns the fluid to high heat areas.

  14. Heat pipe with embedded wick structure

    DOE Patents [OSTI]

    Adkins, D.R.; Shen, D.S.; Tuck, M.R.; Palmer, D.W.; Grafe, V.G.

    1998-06-23

    A heat pipe has an embedded wick structure that maximizes capillary pumping capability. Heat from attached devices such as integrated circuits evaporates working fluid in the heat pipe. The vapor cools and condenses on a heat dissipation surface. The condensate collects in the wick structure, where capillary pumping returns the fluid to high heat areas. 7 figs.

  15. Boise City Geothermal District Heating District Heating Low Temperatur...

    Open Energy Info (EERE)

    66.20x109 Btuyr 19.40 GWhyr Delat T 53.00 F Load Factor 0.07 Contact Kent Johnson; 208-384-3926 References Oregon Institute of Technology's Geo-Heat Center1 Boise...

  16. San Bernardino District Heating District Heating Low Temperature...

    Open Energy Info (EERE)

    Annual Generation 75.00x109 Btuyr 22.00 GWhyr Delat T 24.00 F Load Factor 0.20 Start Up Date 1983 Contact 909-384-5298 References Oregon Institute of Technology's Geo-Heat...

  17. City of Klamath Falls District Heating District Heating Low Temperatur...

    Open Energy Info (EERE)

    Annual Generation 35.00x109 Btuyr 10.30 GWhyr Delat T 32.00 F Load Factor 0.25 Start Up Date 1981 Contact 541-883-5316 References Oregon Institute of Technology's Geo-Heat...

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

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

    a high boiling point. Viscosity and thermal capacity determine the amount of pumping energy required. A fluid with low viscosity and high specific heat is easier to pump, because...

  19. Generator-absorber-heat exchange heat transfer apparatus and method and use thereof in a heat pump

    DOE Patents [OSTI]

    Phillips, Benjamin A. (Benton Harbor, MI); Zawacki, Thomas S. (St. Joseph, MI); Marsala, Joseph (Glen Ellyn, IL)

    1994-11-29

    Numerous embodiments and related methods for generator-absorber heat exchange (GAX) are disclosed, particularly for absorption heat pump systems. Such embodiments and related methods use the working solution of the absorption system for the heat transfer medium.

  20. Carbon footprints of heating oil and LPG heating systems

    SciTech Connect (OSTI)

    Johnson, Eric P.

    2012-07-15

    For European homes without access to the natural gas grid, the main fuels-of-choice for heating are heating oil and LPG. How do the carbon footprints of these compare? Existing literature does not clearly answer this, so the current study was undertaken to fill this gap. Footprints were estimated in seven countries that are representative of the EU and constitute two-thirds of the EU-27 population: Belgium, France, Germany, Ireland, Italy, Poland and the UK. Novelties of the assessment were: systems were defined using the EcoBoiler model; well-to-tank data were updated according to most-recent research; and combustion emission factors were used that were derived from a survey conducted for this study. The key finding is that new residential heating systems fuelled by LPG are 20% lower carbon and 15% lower overall-environmental-impact than those fuelled by heating oil. An unexpected finding was that an LPG system's environmental impact is about the same as that of a bio heating oil system fuelled by 100% rapeseed methyl ester, Europe's predominant biofuel. Moreover, a 20/80 blend (by energy content) with conventional heating oil, a bio-heating-oil system generates a footprint about 15% higher than an LPG system's. The final finding is that fuel switching can pay off in carbon terms. If a new LPG heating system replaces an ageing oil-fired one for the final five years of its service life, the carbon footprint of the system's final five years is reduced by more than 50%.

  1. Heat pump assisted geothermal heating system for Felix Spa, Romania

    SciTech Connect (OSTI)

    Rosca, Marcel; Maghiar, Teodor

    1996-01-24

    The paper presents a pre-feasibility type study of a proposed heat pump assisted geothermal heating system for an average hotel in Felix Spa, Romania. After a brief presentation of the geothermal reservoir, the paper gives the methodology and the results of the technical and economical calculations. The technical and economical viability of the proposed system is discussed in detail in the final part of the paper.

  2. Low-Cost Gas Heat Pump for Building Space Heating

    Office of Environmental Management (EM)

    Low-Cost Gas Heat Pump for Building Space Heating 2014 Building Technologies Office Peer Review Michael Garrabrant mgarrabrant@stonemtntechnologies.com Stone Mountain Technologies, Inc. Project Summary Timeline: Start date: March 01, 2013 Planned end date: February 28, 2015 Key Milestones: 1. Cycle & System Design: 12/31/2014 2. Breadboard Test Results: 06/30/2014 3. Packaged Prototype Results: 02/28/2015 Budget: Total DOE $ to date: $305,396 Total future DOE $: $597,474 Target

  3. Low-Cost Gas Heat Pump for Building Space Heating

    Office of Environmental Management (EM)

    Low-Cost Gas Heat Pump for Building Space Heating 2015 Building Technologies Office Peer Review Michael Garrabrant mgarrabrant@stonemtntechnologies.com Stone Mountain Technologies, Inc. Project Summary Timeline: Start date: March 01, 2013 Planned end date: August 31, 2015 Key Milestones: 1. Cycle & System Design: 12/31/2014 2. Breadboard Test Results: 12/31/2014 3. Packaged Prototype Results: 04/01/2015 Budget: Total DOE $ to date: $629,730 Total future DOE $: $273,140 Target

  4. Workshop on Condensing Heating and Water Heating Equipment

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

    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

  5. Heat exchanger with ceramic elements

    DOE Patents [OSTI]

    Corey, John A. (North Troy, NY)

    1986-01-01

    An annular heat exchanger assembly includes a plurality of low thermal growth ceramic heat exchange members with inlet and exit flow ports on distinct faces. A mounting member locates each ceramic member in a near-annular array and seals the flow ports on the distinct faces into the separate flow paths of the heat exchanger. The mounting member adjusts for the temperature gradient in the assembly and the different coefficients of thermal expansion of the members of the assembly during all operating temperatures.

  6. Heat exchanger using graphite foam

    DOE Patents [OSTI]

    Campagna, Michael Joseph; Callas, James John

    2012-09-25

    A heat exchanger is disclosed. The heat exchanger may have an inlet configured to receive a first fluid and an outlet configured to discharge the first fluid. The heat exchanger may further have at least one passageway configured to conduct the first fluid from the inlet to the outlet. The at least one passageway may be composed of a graphite foam and a layer of graphite material on the exterior of the graphite foam. The layer of graphite material may form at least a partial barrier between the first fluid and a second fluid external to the at least one passageway.

  7. ARM - Measurement - Soil heat flux

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

    heat flux ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Soil heat flux A quantity measured according to the formula B = {lambda}(dT/dz), where {lambda} is the conductivity of the soil that the heat is moving through. Categories Surface Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each

  8. Heat transfer analysis in Stirling engine heat input system

    SciTech Connect (OSTI)

    Chung, W.; Kim, S.

    1995-12-31

    One of the major factor in commercialization of Stirling engine is mass productivity, and the heat input system including tubular heater is one of the obstacles to mass production because of its complexity in shape and difficulty in manufacturing, which resulted from using oxidation-resistant, low-creep alloys which are not easy to machine and weld. Therefore a heater heat exchanger which is very simple in shape and easy to make has been devised, and a burner system appropriate to this heater also has been developed. In this paper specially devised heat input system which includes a heater shell shaped like U-cup and a flame tube located in the heater shell is analyzed in point of heat transfer processes to find optimum heat transfer. To enhance the heat transfer from the flame tube to the heater shell wall, it is required that the flame tube diameter be enlarged as close to the heater shell diameter as possible, and the flame tube temperature be raised as high as possible. But the enlargement of the flame tube diameter should be restricted by the state of combustion affected by hydraulic resistance of combustion gas, and the boost of the flame tube temperature should be considered carefully in the aspects of the flame tube`s service life.

  9. Convective heat transfer inside passive solar buildings

    SciTech Connect (OSTI)

    Jones, R.W.; Balcomb, J.D.; Yamaguchi, K.

    1983-11-01

    Natural convection between spaces in a building which play a major role in energy transfer are discussed. Two situations are investigated: Convection through a single doorway into a remote room, and a convective loop in a two story house with a south sunspace where a north stairway serves as the return path. A doorway sizing equation is given for the single door case. Data from airflow monitoring in one two-story house and summary data for five others are presented. The nature of the airflow and design guidelines are presented.

  10. Convective heat transfer inside passive solar buildings

    SciTech Connect (OSTI)

    Jones, R.W.; Balcomb, J.D.; Yamaguchi, K.

    1983-01-01

    Natural convection between spaces in a building can play a major role in energy transfer. Two situations are investigated: convection through a single doorway into a remote room, and a convective loop in a two-story house with a south sunspace where a north stairway serves as the return path. A doorway-sizing equation is given for the single-door case. Detailed data are given from the monitoring of airflow in one two-story house and summary data are given for five others. Observations on the nature of the airflow and design guidelines are presented.

  11. DOE to Purchase Heating Oil for the Northeast Home Heating Oil...

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

    Purchase Heating Oil for the Northeast Home Heating Oil Reserve DOE to Purchase Heating Oil for the Northeast Home Heating Oil Reserve June 23, 2008 - 1:29pm Addthis WASHINGTON, DC ...

  12. 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...

  13. Heat Distribution Systems | Department of Energy

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

    Forced-air systems use ducts that can also be used for central air conditioning and heat pump systems. Radiant heating systems also have unique heat distribution systems. That...

  14. Property:HeatSource | Open Energy Information

    Open Energy Info (EERE)

    HeatSource Jump to: navigation, search Property Name HeatSource Property Type String Description A description of the resource heat source in the geothermal area. Describes what...

  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. Solar Space Heat | Open Energy Information

    Open Energy Info (EERE)

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

  17. Solar pool heating | Open Energy Information

    Open Energy Info (EERE)

    Solar pool heating Jump to: navigation, search Pool Heating is a great use for solar energy. Solar pool heating systems can be very effective and inexpensive. The pool itself is...

  18. Compare All CBECS Activities: District Heat Use

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

    District Heat Use Compare Activities by ... District Heat Use Total District Heat Consumption by Building Type Commercial buildings in the U.S. used a total of approximately 433...

  19. 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.

  20. Vehicle Component Heat Dissipation Improvements - Energy Innovation...

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

    operating. In order to do this, heat sinks and other heat exchangers are often used to draw heat away from these objects and into the surrounding air. Insufficient cooling can...