Powered by Deep Web Technologies
Note: This page contains sample records for the topic "hot water heaters" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Arnold Schwarzenegger WATER HEATERS AND HOT WATER  

E-Print Network [OSTI]

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

2

Water Heaters and Hot Water Distribution Systems  

E-Print Network [OSTI]

Building Energy Efficiency Standards .. 4 Multi-Family Water Heating.. 4 Pipe HeatBuilding Energy Efficiency Standards The scope of this task included the following subtasks; Multi-Family Water Heating, Pipe Heat

Lutz, Jim

2012-01-01T23:59:59.000Z

3

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

SciTech Connect (OSTI)

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

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

2008-08-13T23:59:59.000Z

4

Solar Hot Water Heater Augmented with PV-TEM Heat Pump.  

E-Print Network [OSTI]

??Solar assisted heat pumps (SAHPs) can provide higher collector efficiencies and solar fractions when compared against standard solar hot water heaters. Vapour compression (VC) heat (more)

PRESTON, NATHANIEL

5

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

E-Print Network [OSTI]

Diagram 1: A Typical Tank Water Heater Source: http://to-unit comparisons of tank versus tankless water heaters.Energy Use MJ/(unit*year) Tank Tankless MJ/(unit*year) Tank

Lu, Alison

2011-01-01T23:59:59.000Z

6

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

E-Print Network [OSTI]

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

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

7

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

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

San Jose - Solar Hot Water Heaters and Photovoltaic Systems San Jose - Solar Hot Water Heaters and Photovoltaic Systems Permit Requirements City of San Jose - Solar Hot Water Heaters and Photovoltaic Systems Permit Requirements < Back Eligibility Commercial Construction Industrial Installer/Contractor Multi-Family Residential Residential Savings Category Solar Buying & Making Electricity Program Info State California Program Type Solar/Wind Permitting Standards Provider City of San Jose Building, Planning and Electrical Permits are required for Photovoltiac (PV) systems installed in San Jose. In most cases, PV systems must also undergo a Building Plan Review and an Electrical Plan Review. Building Plan Reviews are not required for installations that meet all of the following criteria: 1. Total panel weight (including frame) is not greater than 5 lbs. per

8

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

Energy Savers [EERE]

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

9

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

SciTech Connect (OSTI)

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

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

2013-11-01T23:59:59.000Z

10

Heat Pump Water Heaters  

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

Water Heaters Showerheads Residential Weatherization Performance Tested Comfort Systems Ductless Heat Pumps New Construction Residential Marketing Toolkit Retail Sales...

11

Selecting a new water heater  

SciTech Connect (OSTI)

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

NONE

1995-03-01T23:59:59.000Z

12

Solar Water Heater Basics | Department of Energy  

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

Solar Water Heater Basics Solar Water Heater Basics Solar Water Heater Basics August 19, 2013 - 3:01pm Addthis Illustration of an active, closed loop solar water heater. A large, flat panel called a flat plate collector is connected to a tank called a solar storage/backup water heater by two pipes. One of these pipes runs through a cylindrical pump into the bottom of the tank, where it becomes a coil called a double-wall heat exchanger. This coil runs up through the tank and out again to the flat plate collector. Antifreeze fluid runs only through this collector loop. Two pipes run out the top of the water heater tank; one is a cold water supply into the tank, and the other sends hot water to the house. Solar water heaters use the sun's heat to provide hot water for a home or

13

Development of a cogenerating thermophotovoltaic powered combination hot water heater/hydronic boiler  

Science Journals Connector (OSTI)

A cogenerating thermophotovoltaic (TPV) device for hot water hydronic space heating and electric power generation was developed designed fabricated and tested under a Department of Energy contracted program. The device utilizes a cylindrical ytterbia superemissive ceramic fiber burner (SCFB) and is designed for a nominal capacity of 80 kBtu/hr. The burner is fired with premixed natural gas and air. Narrow band emission from the SCFB is converted to electricity by single crystal silicon (Si) photovoltaic (PV) arrays arranged concentrically around the burner. A three-way mixing valve is used to direct heated water to either the portable water storage tank radiant baseboard heaters or both. As part of this program QGI developed a microprocessor-based control system to address the safety issues as well as photovoltaic power management. Flame sensing is accomplished via the photovoltaics a technology borrowed from QGIs Quantum Control safety shut-off system. Device testing demonstrated a nominal photovoltaic power output of 200 W. Power consumed during steady state operation was 33 W with power drawn from the combustion air blower hydronic system pump three-way switching valve and the control system resulting in a net power surplus of 142 W. Power drawn during the ignition sequence was 55 W and a battery recharge time of 1 minute 30 seconds was recorded. System efficiency was measured and found to be more than 83%. Pollutant emissions at determined operating conditions were below the South Coast Air Quality Management Districts (California) limit of 40 ng/J for NOx and carbon monoxide emissions were measured at less than 50 dppm.

Aleksandr S. Kushch; Steven M. Skinner; Richard Brennan; Pedro A. Sarmiento

1997-01-01T23:59:59.000Z

14

Tankless or Demand-Type Water Heaters | Department of Energy  

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

Tankless or Demand-Type Water Heaters Tankless or Demand-Type Water Heaters Tankless or Demand-Type Water Heaters May 2, 2012 - 6:47pm Addthis Diagram of a tankless water heater. Diagram of a tankless water heater. How does it work? Tankless water heaters deliver hot water as it is needed, eliminating the need for storage tanks. Tankless water heaters, also known as demand-type or instantaneous water heaters, provide hot water only as it is needed. They don't produce the standby energy losses associated with storage water heaters, which can save you money. Here you'll find basic information about how they work, whether a tankless water heater might be right for your home, and what criteria to use when selecting the right model. Check out the Energy Saver 101: Water Heating infographic to learn if a tankless water heater is right for you.

15

Building America Technology Solutions for New and Existing Homes: Performance of a Heat Pump Water Heater in the Hot-Humid Climate, Windermere, Florida (Fact Sheet)  

Broader source: Energy.gov [DOE]

For a 6-month period, the Building America team Consortium for Advanced Residential Buildings monitored the performance of a heat pump water heater in Windermere, Florida. The study found that the HPWH performed 144% more efficiently than a traditional electric resistance water heater, saving approximately 64% on water heating annually. The monitoring showed that the domestic hot water draw was a primary factor affecting the system's operating efficiency.

16

Tankless Coil and Indirect Water Heaters | Department of Energy  

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

Tankless Coil and Indirect Water Heaters Tankless Coil and Indirect Water Heaters Tankless Coil and Indirect Water Heaters May 16, 2013 - 7:21pm Addthis An indirect water heater. An indirect water heater. How does it work? Tankless coil and indirect water heaters use your home's heating system to heat water. Tankless coil and indirect water heaters use a home's space heating system to heat water. They're part of what's called integrated or combination water and space heating systems. How They Work A tankless coil water heater provides hot water on demand without a tank. When a hot water faucet is turned on, water is heated as it flows through a heating coil or heat exchanger installed in a main furnace or boiler. Tankless coil water heaters are most efficient during cold months when the heating system is used regularly but can be an inefficient choice for many

17

Solar Water Heaters | Department of Energy  

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

Solar Water Heaters Solar Water Heaters Solar Water Heaters May 7, 2012 - 9:52am Addthis Solar water heaters -- also called solar domestic hot water systems -- can be a cost-effective way to generate hot water for your home. They can be used in any climate, and the fuel they use -- sunshine -- is free. How They Work Solar water heating systems include storage tanks and solar collectors. There are two types of solar water heating systems: active, which have circulating pumps and controls, and passive, which don't. Active Solar Water Heating Systems There are two types of active solar water heating systems: Direct circulation systems Pumps circulate household water through the collectors and into the home. They work well in climates where it rarely freezes. Indirect circulation systems

18

Solar water heaters | Open Energy Information  

Open Energy Info (EERE)

heaters heaters Jump to: navigation, search (The following text is derived from the United States Department of Energy's description of Solar Water Heating technology.)[1] Solar Water Heater One of the most cost-effective ways to include renewable technologies into a building is by incorporating solar hot water. A typical residential solar water-heating system reduces the need for conventional water heating by about two-thirds. It minimizes the expense of electricity or fossil fuel to heat the water and reduces the associated environmental impacts. Solar Water Heating for Buildings Most solar water-heating systems for buildings have two main parts: (1) a solar collector and (2) a storage tank. The most common collector used in solar hot water systems is the flat-plate collector. Solar water heaters use the sun to heat either water

19

Sizing a New Water Heater | Department of Energy  

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

Sizing a New Water Heater Sizing a New Water Heater Sizing a New Water Heater May 29, 2012 - 7:16pm Addthis Is your water heater the right size for you house? | Photo credit ENERGY STAR® Is your water heater the right size for you house? | Photo credit ENERGY STAR® A properly sized water heater will meet your household's hot water needs while operating more efficiently. Therefore, before purchasing a water heater, make sure it's the correct size. Here you'll find information about how to size these systems: Tankless or demand-type water heaters Solar water heating system Storage and heat pump (with tank) water heaters. For sizing combination water and space heating systems -- including some heat pump systems, and tankless coil and indirect water heaters -- consult a qualified contractor.

20

Selecting a New Water Heater | Department of Energy  

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

Selecting a New Water Heater Selecting a New Water Heater Selecting a New Water Heater August 29, 2012 - 7:30pm Addthis Water heater testing facility at Oak Ridge National Laboratory. Water heater testing facility at Oak Ridge National Laboratory. When selecting a new water heater for your home, choose a water heating system that will not only provide enough hot water but also that will do so energy efficiently, saving you money. This includes considering the different types of water heaters available and determining the right size and fuel source for your home. Check out the Energy Saver 101: Water Heating infographic to learn more about the different types of water heaters and how to select the right model for your home. Types of Water Heaters It's a good idea to know the different types of water heaters available

Note: This page contains sample records for the topic "hot water heaters" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Solar water heaters | Open Energy Information  

Open Energy Info (EERE)

water heaters water heaters (Redirected from - Solar Hot Water) Jump to: navigation, search (The following text is derived from the United States Department of Energy's description of Solar Water Heating technology.)[1] Solar Water Heater One of the most cost-effective ways to include renewable technologies into a building is by incorporating solar hot water. A typical residential solar water-heating system reduces the need for conventional water heating by about two-thirds. It minimizes the expense of electricity or fossil fuel to heat the water and reduces the associated environmental impacts. Solar Water Heating for Buildings Most solar water-heating systems for buildings have two main parts: (1) a solar collector and (2) a storage tank. The most common collector used in solar hot water systems is the

22

Dehumidifying water heater  

SciTech Connect (OSTI)

The indoor swimming pool at the Glen Cove YMCA in Glen Cove, New York, has been selected for the dehumidification/water heating system demonstration project. This report provides the specifications for this system which includes a dehumidifier/air handler, condenser/water heater, and outdoor condenser. Current progress underway includes construction, vendor selection, and control system selection. (SM)

Stark, W.

1991-05-31T23:59:59.000Z

23

Absorption Heat Pump Water Heater  

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

Absorption Heat Pump Water Heater Absorption Heat Pump Water Heater Kyle Gluesenkamp Building Equipment Group, ETSD gluesenkampk@ornl.gov 865-241-2952 April 3, 2013 CRADA - GE Development of High Performance Residential Gas Water Heater Image courtesy John Wilkes 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: Absorption technology could greatly boost water heater efficiency, but faces barriers of high first cost and working fluid challenges. Impact of Project: Energy factor of gas storage water

24

Absorption Heat Pump Water Heater  

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

Absorption Heat Pump Water Heater Absorption Heat Pump Water Heater Kyle Gluesenkamp Building Equipment Group, ETSD gluesenkampk@ornl.gov 865-241-2952 April 3, 2013 CRADA - GE Development of High Performance Residential Gas Water Heater Image courtesy John Wilkes 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: Absorption technology could greatly boost water heater efficiency, but faces barriers of high first cost and working fluid challenges. Impact of Project: Energy factor of gas storage water

25

Tankless Coil and Indirect Water Heater Basics | Department of Energy  

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

Coil and Indirect Water Heater Basics Coil and Indirect Water Heater Basics Tankless Coil and Indirect Water Heater Basics August 19, 2013 - 3:03pm Addthis Illustration of a tankless coil water heater. The heater is box-shaped, and has two pipes sticking out one end: one a cold water inlet, and one a hot water outlet. These pipes lead into the heater to a cylindrical coil called a heat exchanger. Long tubes surrounding the heat exchanger are labeled the heated water jacket. At the bottom of the box is a row of small flames, called the boiler heat source. Tankless coil and indirect water heaters use a home or building's space heating system to heat water as part of an integrated or combination water and space heating system. How Tankless Coil and Indirect Water Heaters Work A tankless coil water heater uses a heating coil or heat exchanger

26

Performance and economic evaluation of the seahorse natural gas hot water heater conversion at Fort Stewart. Interim report, 1994 Summer  

SciTech Connect (OSTI)

The federal government is the largest single energy consumer in the United States cost valued at nearly $10 billion annually. The US Department of Energy`s (DOE) Federal Energy Management Program (FEMP) supports efforts to reduce energy use and associated expenses in the federal sector. One such effort, the New Technology Demonstration Program (NTDP), seeks to evaluate new energy-saving US technologies and secure their more timely adoption by the US government. Pacific Northwest Laboratory (PNL) is one of four DOE laboratories that participate in the New Technologies Demonstration Program, providing technical expertise and equipment to evaluate new, energy-saving technologies being studied under that program. This interim report provides the results of a field evaluation that PNL conducted for DOE/FEMP and the US Department of Defense (DoD) Strategic Environmental Research and Development Program (SERDP) to examine the performance of a candidate energy-saving technology-a hot water heater conversion system to convert electrically heated hot water tanks to natural gas fuel. The unit was installed at a single residence at Fort Stewart, a US Army base in Georgia, and the performance was monitored under the NTDP. Participating in this effort under a Cooperative Research and Development Agreement (CRADA) were Gas Fired Products, developers of the technology; the Public Service Company of North Carolina; Atlanta Gas Light Company; the Army Corps of Engineers; Fort Stewart; and Pacific Northwest Laboratory.

Winiarski, D.W.

1995-01-01T23:59:59.000Z

27

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

E-Print Network [OSTI]

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

28

Tankless Demand Water Heater Basics | Department of Energy  

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

Demand Water Heater Basics Demand Water Heater Basics Tankless Demand Water Heater Basics August 19, 2013 - 2:57pm Addthis Illustration of an electric demand water heater. At the top of the image, the heating unit is shown. Cold water flows in one end of a pipe, flows through and around several curved pipes over the heating elements, and out the other end as hot water. Beneath the heating unit, a typical sink setup is shown. The sink has two pipes coming out the bottom, one for the hot water line and one for the cold water line. Both pipes lead to the heating unit, which is installed in close proximity to the area of hot water use, and is connected to a power source (110 or 220 volts). Demand (tankless or instantaneous) water heaters have heating devices that are activated by the flow of water, so they provide hot water only as

29

Tankless Demand Water Heater Basics | Department of Energy  

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

Tankless Demand Water Heater Basics Tankless Demand Water Heater Basics Tankless Demand Water Heater Basics August 19, 2013 - 2:57pm Addthis Illustration of an electric demand water heater. At the top of the image, the heating unit is shown. Cold water flows in one end of a pipe, flows through and around several curved pipes over the heating elements, and out the other end as hot water. Beneath the heating unit, a typical sink setup is shown. The sink has two pipes coming out the bottom, one for the hot water line and one for the cold water line. Both pipes lead to the heating unit, which is installed in close proximity to the area of hot water use, and is connected to a power source (110 or 220 volts). Demand (tankless or instantaneous) water heaters have heating devices that are activated by the flow of water, so they provide hot water only as

30

Electric Storage Water Heaters  

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

energy can be wasted even when a hot water tap isn't running. This is called standby heat loss. The American Council for an Energy Efficient Economy provides a helpful...

31

Experimental investigation of the night heat losses of hot water storage tanks in thermosyphon solar water heaters  

Science Journals Connector (OSTI)

The effects of night heat losses on the performance of thermosyphon solar water heaters have been experimentally examined. Three typical thermosyphon solar water heating systems with different storage tank sizes were tested by utilising the method suggested by ISO 9459-2:95. The results were analysed to quantify the night heat losses and to investigate the effect that these may have on the system daily performance. Analysis of the results showed that a linear behavior of the heat losses with the night mean ambient temperature exists. The correlation coefficients of the linearity for the three systems under consideration range from 0.93 to 0.97 with the losses reaching almost 8000 kJ at a mean ambient air temperature of 10 C. This value represents a significant percentage of the daily collected energy making the night losses one of the most important sources of energy loss in thermosyphonic systems.

Ioannis Michaelides; Polyvios Eleftheriou; George A. Siamas; George Roditis; Paraskevas Kyriacou

2011-01-01T23:59:59.000Z

32

Heat Pump Water Heaters | Department of Energy  

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

Heat Pump Water Heaters Heat Pump Water Heaters Standardized Templates for Reporting Test Results heatpumpwaterheaterv1.7.xlsx More Documents & Publications Tankless Gas Water...

33

Do You Have a Solar Water Heater?  

Broader source: Energy.gov [DOE]

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

34

Advanced Hybrid Water Heater using Electrochemical Compressor...  

Energy Savers [EERE]

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

35

Tankless Gas Water Heaters | Department of Energy  

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

Tankless Gas Water Heaters Tankless Gas Water Heaters Standardized Templates for Reporting Test Results tanklessgaswaterheaterv12.xlsx More Documents & Publications Heat Pump...

36

Commercial Water Heaters | Department of Energy  

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

Water Heaters Commercial Water Heaters Standardized DOE Testing Templates commercialwaterheater v1.0.xlsx More Documents & Publications Refrigerators and Refrigerator-Freezers...

37

Storage Gas Water Heaters | Department of Energy  

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

Storage Gas Water Heaters Storage Gas Water Heaters The Department of Energy (DOE) develops standardized data templates for reporting the results of tests conducted in accordance...

38

Combined Systems with Tankless Water Heaters  

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

Combined Systems with Tankless Water Heaters Combined Systems with Tankless Water Heaters Armin Rudd Residential Energy Efficiency Stakeholder Meeting 2/29 - 3/2/2012 Austin, Texas 2 Residential Energy Efficiency Stakeholder Meeting 2/29 - 3/2/2012 Austin, Texas More builder's wanting to use gas-fired tankless water heaters, and with solar pre-heat  Endless hot water  Helps HERS Index  Space saving 2 3 Residential Energy Efficiency Stakeholder Meeting 2/29 - 3/2/2012 Austin, Texas Problem with elevated TWH inlet temperature 60 70 80 90 100 110 120 130 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 Maximum Inlet Temperature (F) DHW flow rate (gpm) Maximum TWH inlet temperature to stay below 125 F delivered temperature, with 15 kBtu/h minimum firing rate Typical shower temperature 4 Residential Energy Efficiency Stakeholder Meeting

39

Performance and economic evaluation of the seahorse natural gas hot water heater conversion at Fort Stewart. Final report  

SciTech Connect (OSTI)

The Federal government is the largest single energy consumer in the United States with consumption of nearly 1.5 quads/year of energy (10{sup 15} quad = 1015 Btu) and cost valued at nearly $10 billion annually. The US Department of Energy`s (DOE) Federal Energy Management Program (FEMP) supports efforts to reduce energy use and associated expenses in the Federal sector. One such effort, the New Technology Demonstration Program (NTDP) seeks to evaluate new energy -- saving US technologies and secure their more timely adoption by the US government. Pacific Northwest Laboratory (PNL) is one of four DOE laboratories that participate in the New Technologies Demonstration Program, providing technical expertise and equipment to evaluate new, energy-saving technologies being studied under that program. This report provides the results of a field evaluation that PNL conducted for DOE/FEMP with funding support from the US Department of Defense (DoD) Strategic Environmental Research and Development Program (SERDP) to examine the performance of 4 candidate energy-saving technology-a water heater conversion system to convert electrically powered water heaters to natural gas fuel. The unit was installed at a single residence at Fort Stewart, a US Army base in Georgia, and the performance was monitored under the NTDP. Participating in this effort under a Cooperative Research and Development Agreement (CRADA) were Gas Fired Products, developers of the technology; the Public Service Company of North Carolina; Atlanta Gas Light Company; the Army Corps of Engineers; Fort Stewart; and Pacific Northwest Laboratory.

Winiarski, D.W.

1995-12-01T23:59:59.000Z

40

Heat Pump Water Heaters | Department of Energy  

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

Water Heaters Water Heaters Heat Pump Water Heaters May 4, 2012 - 5:21pm Addthis 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 than conventional electric storage water heaters. Heat pump water heaters work in locations that remain in the 40º-90ºF range year-round. 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, they can be two to

Note: This page contains sample records for the topic "hot water heaters" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Savings Project: Insulate Your Water Heater Tank | Department of Energy  

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

Savings Project: Insulate Your Water Heater Tank Savings Project: Insulate Your Water Heater Tank Savings Project: Insulate Your Water Heater Tank Addthis Project Level medium Energy Savings $20-$45 annually Time to Complete 1.5 hours Overall Cost $30 Insulate your hot water tank to save energy and money. | Photo courtesy of iStockphoto.com/glennebo Insulate your hot water tank to save energy and money. | Photo courtesy of iStockphoto.com/glennebo Just like insulating your walls or roof, insulating your hot water tank is an easy and inexpensive way to improve energy efficiency and save you money each month. If your water tank is new, it is likely already insulated. If you have an older hot water tank, check to see if it has insulation with an R-value of at least 24. If not, consider insulating your water tank, which

42

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

E-Print Network [OSTI]

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

Franco, Victor

2011-01-01T23:59:59.000Z

43

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

E-Print Network [OSTI]

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

Franco, Victor

2011-01-01T23:59:59.000Z

44

Performance of a Heat Pump Water Heater in the Hot-Humid Climate, Windermere, Florida (Fact Sheet), Building America Case Study: Technology Solutions for New and Existing Homes, Building Technologies Office (BTO)  

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

Performance of a Performance of a Heat Pump Water Heater in the Hot-Humid Climate Windermere, Florida Over recent years, heat pump water heaters (HPWHs) have become more read- ily available and more widely adopted in the marketplace. A key feature of an HPWH unit is that it is a hybrid system. When conditions are favorable, the unit will operate in heat pump mode (using a vapor compression system that extracts heat from the surrounding air) to efficiently provide domestic hot water (DHW). Homeowners need not adjust their behavior to conform to the heat pump's capabilities. If a heat pump cannot meet a higher water draw demand, the heater will switch to electric resistance to provide a higher heating rate. This flexibility

45

Storage Water Heaters | Department of Energy  

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

Storage Water Heaters Storage Water Heaters Storage Water Heaters June 15, 2012 - 6:00pm Addthis Consider energy efficiency when selecting a conventional storage water heater to avoid paying more over its lifetime. | Photo courtesy of ©iStockphoto/JulNichols. Consider energy efficiency when selecting a conventional storage water heater to avoid paying more over its lifetime. | Photo courtesy of ©iStockphoto/JulNichols. Conventional storage water heaters remain the most popular type of water heating system for the home. Here you'll find basic information about how storage water heaters work; what criteria to use when selecting the right model; and some installation, maintenance, and safety tips. How They Work A single-family storage water heater offers a ready reservoir -- from 20 to

46

Development of a gas backup heater for solar domestic hot-water systems. Final report, April 1978-April 1980  

SciTech Connect (OSTI)

A comprehensive program was undertaken to develop a unique gas fired backup for solar domestic hot water systems. Detailed computer design tools were written. A series of heat transfer experiments were performed to characterize the performance of individual components. A full scale engineering prototype, including the solar preheat tank and solar heat exchanger, was designed, fabricated and subjected to limited testing. Firing efficiency for the backup system was found to be 81.4% at a firing rate of 50,000 Btu/h. Long term standby losses should be negligible.

Morrison, D.J.; Grunes, H.E.; de Winter, F.; Armstrong, P.R.

1980-06-01T23:59:59.000Z

47

FS: heat pump water heaters | The Better Buildings Alliance  

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

Food Service » Install a heat pump Food Service » Install a heat pump water heaterand reduce water heating energy up to 70% using the commercial heat pump water heater specificat Activities Technology Solutions Teams Lighting & Electrical Space Conditioning Plug & Process Loads Food Service Refrigeration Laboratories Energy Management & Information Systems Public Sector Teams Market Solutions Teams Install a heat pump water heaterand reduce water heating energy up to 70% using the commercial heat pump water heater specification The Food Service team developed a Commercial Heat Pump Water Heater Specification that can be used to reduce water heating energy by 70%. An older, electric resistance water heater (operated in a building with a hot water demand of 500 gallons a day) can cost more than $3,500 each year

48

Utilization of Heat Pump Water Heaters for Load Management  

SciTech Connect (OSTI)

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

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

2014-01-01T23:59:59.000Z

49

Solar Water Heaters and the Economy | Department of Energy  

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

Water Heaters and the Economy Water Heaters and the Economy Solar Water Heaters and the Economy July 11, 2012 - 11:59am Addthis Ernie Tucker Editor, National Renewable Energy Laboratory These are the days of hot sun and mortgage refinance frenzy. Somehow, they've both combined in my mind to make me ponder the economics of a solar water heater. Because the sun's been beating down on our garden hose, the initial flush of water can be very hot. The warm spray reminded me of the times on camping trips when we'd bring along a portable solar shower -- essentially a black plastic bag with a tube and shower nozzle -- for bathing. While not an endless supply (perhaps 10 gallons), it was a very enjoyable luxury. Of course, it assumes that there's plenty of sunshine, but if so -- voila -- a warm and sudsy campsite clean-up is possible.

50

Solar Water Heaters and the Economy | Department of Energy  

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

Solar Water Heaters and the Economy Solar Water Heaters and the Economy Solar Water Heaters and the Economy July 11, 2012 - 11:59am Addthis Ernie Tucker Editor, National Renewable Energy Laboratory These are the days of hot sun and mortgage refinance frenzy. Somehow, they've both combined in my mind to make me ponder the economics of a solar water heater. Because the sun's been beating down on our garden hose, the initial flush of water can be very hot. The warm spray reminded me of the times on camping trips when we'd bring along a portable solar shower -- essentially a black plastic bag with a tube and shower nozzle -- for bathing. While not an endless supply (perhaps 10 gallons), it was a very enjoyable luxury. Of course, it assumes that there's plenty of sunshine, but if so -- voila -- a

51

Residential Water Heaters Webinar  

Broader source: Energy.gov [DOE]

Jerone Gagliano presents information on water heating technology for U.S Department of Energy Sustainable Energy Resources for Consumers grant program

52

Dehumidifying water heater  

SciTech Connect (OSTI)

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

Not Available

1992-08-18T23:59:59.000Z

53

CO2 Heat Pump Water Heater | Department of Energy  

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

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

54

Immersible solar water heater  

SciTech Connect (OSTI)

The invention consists in an immersible solar heat collecting means capable of being laid at the bottom of a pool where it can be walked upon. The substantially laminar portions of the collector each includes a surface of higher light absorbence than the other side thereof so that by folding or otherwise overlapping and rearranging the various portions a different number of higher light absorbence surfaces can be presented to the sun to heat the water at any particular time. Such an apparatus makes possible the controlled solar heating of a pool.

Caroon, R.S.

1980-12-09T23:59:59.000Z

55

Grays Harbor PUD - Solar Water Heater Rebate | Department of Energy  

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

Grays Harbor PUD - Solar Water Heater Rebate Grays Harbor PUD - Solar Water Heater Rebate Grays Harbor PUD - Solar Water Heater Rebate < Back Eligibility Commercial Industrial Residential Savings Category Heating & Cooling Solar Water Heating Program Info State District of Columbia Program Type Utility Rebate Program Rebate Amount $600 Provider Grays Harbor PUD Since October 2001, Grays Harbor PUD has offered a rebate program for the installation of solar water heaters. Rebates of $600 are available for the installation of solar collectors of 40 square feet or more. Only customers who currently use electricity for hot water are eligible. This rebate is available on a case-by-case basis, so you must contact the utility in order to take advantage of it. Customers may choose a [http://dsireusa.org/incentives/incentive.cfm?Incentive_Code=WA09F&re=1&ee=1

56

Grays Harbor PUD - Solar Water Heater Loan | Department of Energy  

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

Solar Water Heater Loan Solar Water Heater Loan Grays Harbor PUD - Solar Water Heater Loan < Back Eligibility Residential Savings Category Heating & Cooling Solar Water Heating Maximum Rebate not specified Program Info State District of Columbia Program Type Utility Loan Program Rebate Amount not specified Provider Grays Harbor PUD Since October 2001, Grays Harbor PUD has offered a low-interest loan program (currently 4.0%) for the installation of solar water heaters. Loans are available for the installation of solar collectors of 40 square feet or more. The loans are provided through local lenders, with interest subsidized by the PUD. Only customers who currently use electricity for hot water are eligible. Pre-approval is required for this loan and loan amounts are determined on a case-by-case basis.

57

Cornell University Hot Water Report  

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

Hot Water System Hot Water System The production and delivery of hot water in the CUSD home is technologically advanced, economical, and simple. Hot water is produced primarily by the evacuated solar thermal tube collectors on the roof of the house. The solar thermal tube array was sized to take care of the majority of our heating and hot water needs throughout the course of the year in the Washington, DC climate. The solar thermal tube array also provides heating to the radiant floor. The hot water and radiant floor systems are tied independently to the solar thermal tube array, preventing the radiant floor from robbing the water heater of much needed thermal energy. In case the solar thermal tubes are not able to provide hot water to our system, the hot water tank contains an electric heating

58

CO2 Heat Pump Water Heater  

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

CO 2 Heat Pump Water Heater 2014 Building Technologies Office Peer Review Evaporator Kyle Gluesenkamp, gluesenkampk@ornl.gov Oak Ridge National Laboratory Project Summary Timeline:...

59

Laboratory Performance Evaluation of Residential Integrated Heat Pump Water Heaters  

SciTech Connect (OSTI)

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

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

2011-09-01T23:59:59.000Z

60

SMUD - Solar Water Heater Rebate Program | Department of Energy  

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

Solar Water Heater Rebate Program Solar Water Heater Rebate Program SMUD - Solar Water Heater Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Solar Water Heating Program Info State California Program Type Utility Rebate Program Rebate Amount 500 - 1,500 per system, depending on energy savings Provider Sacramento Municipal Utility District The Sacramento Municipal Utility District's (SMUD) Solar Domestic Hot Water Program provides rebates and/or loan financing to customers who install solar water heating systems. The amount of the rebate depends on how much electricity the system will offset annually: * 800 - 1,399 kWh: $500 * 1,400 - 2,199 kWh: $1,000 * 2,200 kWh or greater: $1,500 . All solar water-heating units must meet standards set by the Solar Rating

Note: This page contains sample records for the topic "hot water heaters" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Heat Pump Water Heater Performance in  

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

searc searc e er tra A Research Institute of the University of Central Florida FLORIDA SOLAR ENERGY CENTER - A Re h Institut of the Univ sity of Cen l Florida searc e er tra Heat Pump Water Heater Performance in Laboratory House Building America Technical Update 2013 ACI National Home Performance Conference April 29- 30 , 2013 Carlos J. Colon carlos@fsec.ucf.edu A Research Institute of the University of Central Florida FLORIDA SOLAR ENERGY CENTER - A Re h Institut of the Univ sity of Cen l Florida FLORIDA SOLAR ENERGY CENTER - A Research Institute of the University of Central Florida Hot Water Systems (HWS) Laboratory FSEC Grounds, Florida (east coast) 2009 -Present (Currently fourth testing rotation) FLORIDA SOLAR ENERGY CENTER - A Research Institute of the University of Central Florida

62

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

E-Print Network [OSTI]

M.V. Lapsa. 2001. Residential Heat Pump Water Heater (HPWH)Calwell. 2005. Residential Heat Pump Water Heaters: EnergyA Specification for Residential Heat Pump Water Heaters

Franco, Victor

2011-01-01T23:59:59.000Z

63

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

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

Burbank Water and Power - Solar Water Heater Rebate Program Burbank Water and Power - Solar Water Heater Rebate Program (California) Burbank Water and Power - Solar Water Heater Rebate Program (California) < Back Eligibility Residential Savings Category Heating & Cooling Solar Water Heating Program Info State California Program Type Utility Rebate Program Rebate Amount $1,500 Provider Rebates Burbank Water and Power is providing incentives for the purchase of solar water heaters. Incentives are only available to residential customers with electric water heaters. There is a limit of one solar water heater per year per property. Applicants must provide access to their residence for a pre-inspection to verify the existing use of an electric water heater. Customers must comply with all code and permit requirements. More

64

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

Energy Savers [EERE]

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

65

Residential Absorption Heat Pump Water Heater | Department of...  

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

Heat Pump Water Heater Residential Absorption Heat Pump Water Heater Photo credit: Oak Ridge National Lab Photo credit: Oak Ridge National Lab Diagram of absorption heat...

66

Ex Parte Memorandum on Grid-Enabled Water Heaters | Department...  

Energy Savers [EERE]

with DOE representatives regarding water heater standards and thermal storage and demand response programs. DOE exparte memo100213 Grid-EnabledWaterHeaterAmendment More...

67

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

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

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

68

Efficient Residential Water Heaters Webinar | Department of Energy  

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

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

69

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

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

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

70

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

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

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

71

Tankless Water Heaters: Do They Really Work?  

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

Tankless Water Heaters: Do They Tankless Water Heaters: Do They Really Work? Center for Energy and Environment, NorthernSTAR, Ben Schoenbauer Context * Domestic Water Heating is the next big residential energy in efficiency. - Space heating loads are being reduced - Largest peak load in almost all homes is water heating - Annual water heating load is larger than annual space heating load in many homes - Most DHW equipment is inefficiency 50-60% Technical Approach * TWHs and condensing TWHs have significant energy savings potential - Do these ratings relate to real world performance? - How do TWHs compare to standard water heaters? - What performance/install issues do they have? * 10 home 26 water heater alternating mode field study was conducted Recommended Guidance * In situations where economics are

72

DOE Publishes Notice of Proposed Rulemaking for Residential Water Heater and Certain Commercial Water Heater Test Procedures  

Broader source: Energy.gov [DOE]

The Department of Energy has published a notice of proposed rulemaking regarding test procedures for residential water heaters and certain commercial water heaters.

73

Heat Pump Water Heater Basics | Department of Energy  

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

Water Heater Basics Water Heater Basics Heat Pump Water Heater Basics August 19, 2013 - 2:59pm Addthis Illustration of a heat pump water heater, which looks like a tall cylinder with a small chamber on top and a larger one on the bottom. In the top chamber are a fan, a cylindrical compressor, and an evaporator that runs along the inside of the chamber. Jutting out from the exterior of the bottom chamber is a temperature and pressure relief valve. This valve has a tube called a hot water outlet attached to the top. Below the valve is the upper thermostat, a small square outside the cylinder that is attached to a curved tube inside the heater. Resistance elements run from the upper thermostat to the similarly shaped lower thermostat. Below the lower thermostat is a drain valve with a cold water inlet attached to the top. Inside the cylinder is an anode, a series of thin tubes running through the bottom chamber to a coiled tube called a condenser. Insulation runs along the inside of the cylinder.

74

Heat Pump Water Heaters Demonstration Project  

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

Heat Pump Water Heaters Heat Pump Water Heaters Demonstration Project Building America Stakeholder Meeting Ron Domitrovic Ammi Amarnath 3/1/2012 Austin, TX 2 © 2011 Electric Power Research Institute, Inc. All rights reserved. HPWH Field Demonstration: Research Objectives * Assess heat pump water heater technology by measuring efficiency. * Provide credible data on the performance and reliability of heat pump water heaters. * Assess user satisfaction in a residential setting. 3 © 2011 Electric Power Research Institute, Inc. All rights reserved. Demonstration Host Utilities Target: 40 Units per Utility Installed and Potential Sites by Climate Zone Source: Department of Energy (DOE), Building America climate regions 4 © 2011 Electric Power Research Institute, Inc. All rights reserved. Installation Locations-Southern Company Region

75

Solar Water Heater Rebate | Department of Energy  

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

Solar Water Heater Rebate Solar Water Heater Rebate Solar Water Heater Rebate < Back Eligibility Commercial Fed. Government Residential Savings Category Heating & Cooling Solar Water Heating Program Info State Hawaii Program Type State Rebate Program Rebate Amount Residential Solar Water Heating: $1,000 upfront, or Residential Solar Water Heating Interest Loan Buy-Down: $1,000 Residential Solar Attic Fans: $50 Commercial: $250 per 12,000 Btu/hr derated capacity Provider Hawaii Energy Hawaii Energy, a third-party administered public benefits fund, provides incentives for energy efficiency and conservation to customers of the Hawaiian Electric Company (HECO) and its subsidiaries, Maui Electric Company (MECO) and Hawaii Electric Light Company (HELCO). This incentive is available for installations on the islands of Oahu, Hawaii, Maui, Lanai and

76

Conventional Storage Water Heater Basics | Department of Energy  

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

Conventional Storage Water Heater Basics Conventional Storage Water Heater Basics Conventional Storage Water Heater Basics July 30, 2013 - 3:39pm Addthis Illustration showing the components of a storage water heater. On top of the tank are two thin pipes; one pipe is the hot water outlet, and the other is the cold water inlet. A large pipe in the middle is called a vent pipe. A pressure/temperature relief valve is also on top of the tank and is connected to an open pipe that runs down the side of the tank. Another valve near the bottom of the outside of the tank is the thermostat and gas valve. A cutout shows the parts inside the tank, which include a large tube called a flue tube/heat exchanger. Inside this tube is a jagged insert called a flue baffle. Beside the flue tube/heat exchanger is a thin tube called the anode rod. At the bottom of the tank is a gas burner, and beneath the burner are combustion air openings.

77

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

E-Print Network [OSTI]

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

Johnson, Alissa

2013-01-01T23:59:59.000Z

78

Covered Product Category: Commercial Gas Water Heaters  

Broader source: Energy.gov [DOE]

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

79

Development of a Market Optimized Condensing Gas Water Heater  

SciTech Connect (OSTI)

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

Peter Pescatore

2006-01-11T23:59:59.000Z

80

Building Technologies Office: HVAC and Water Heater Field Tests Research  

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

HVAC and Water Heater HVAC and Water Heater Field Tests Research Project to someone by E-mail Share Building Technologies Office: HVAC and Water Heater Field Tests Research Project on Facebook Tweet about Building Technologies Office: HVAC and Water Heater Field Tests Research Project on Twitter Bookmark Building Technologies Office: HVAC and Water Heater Field Tests Research Project on Google Bookmark Building Technologies Office: HVAC and Water Heater Field Tests Research Project on Delicious Rank Building Technologies Office: HVAC and Water Heater Field Tests Research Project on Digg Find More places to share Building Technologies Office: HVAC and Water Heater Field Tests Research Project on AddThis.com... About Take Action to Save Energy Partner with DOE Activities Appliances Research

Note: This page contains sample records for the topic "hot water heaters" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

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

Energy Savers [EERE]

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

82

TVA Partner Utilities- Energy Right Water Heater Program  

Broader source: Energy.gov [DOE]

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

83

TVA Partner Utilities- Energy Right Water Heater Program  

Broader source: Energy.gov [DOE]

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

84

Making Water Heaters More Efficient | GE Global Research  

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

Water Heaters More Efficient Making Water Heaters More Efficient Jigar Shah 2013.11.13 As children, many of us grow up wanting to make some sort of lasting positive impact on...

85

Building America Top Innovations Hall of Fame Profile … Tankless Gas Water Heater Performance  

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

Incorporating tankless water heaters was one Incorporating tankless water heaters was one of many energy-efficiency recommendations Building America's research team IBACOS had for San Antonio builder Imagine Homes. Although tankless gas water heaters should save approximately 33% on hot water heating compared to a conventional storage water heater, actual energy savings vary significantly based on individual draw volume. Above 10 gallons per draw, the efficiency approaches the rated energy factor. The greatest savings occur at a daily use quantity of about 50 gallons. BUILDING AMERICA TOP INNOVATIONS HALL OF FAME PROFILE INNOVATIONS CATEGORY: 1. Advanced Technologies and Practices 1.2 Energy Efficient Components Tankless Gas Water Heater Performance As improved thermal enclosures dramatically reduce heating and cooling loads,

86

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

SciTech Connect (OSTI)

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

Not Available

2012-02-01T23:59:59.000Z

87

AWSWAH - the heat pipe solar water heater  

SciTech Connect (OSTI)

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

Akyurt, M.

1986-01-01T23:59:59.000Z

88

TVA Partner Utilities - Energy Right' Water Heater Program | Department of  

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

Right' Water Heater Program Right&#039; Water Heater Program TVA Partner Utilities - Energy Right' Water Heater Program < Back Eligibility Installer/Contractor Residential Utility Savings Category Appliances & Electronics Water Heating Maximum Rebate Member utility water heater rebate programs can range from $25 to total cost. Program Info State Mississippi Program Type Utility Rebate Program Rebate Amount Energy Efficient Water Heater: $50 from TVA Provider Tennessee Valley Authority The TVA energy right Water Heater Plan promotes the installation of high efficiency water heaters in homes and small businesses. TVA provides a $50 incentive to local power companies for each installation. Power Companies may pass these incentives on to customers. Customers should contact their local power company to see what programs are

89

Condensing Hybrid Water Heater Monitoring Field Evaluation  

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

Condensing Hybrid Water Heater Condensing Hybrid Water Heater Monitoring Field Evaluation Jeff Maguire, Lieko Earle, and Chuck Booten National Renewable Energy Laboratory C.E. Hancock Mountain Energy Partnership Produced under direction of the Sacramento Municipal Utilities District by the National Renewable Energy Laboratory (NREL) under Interagency Agreement CRD-05-168 and Task No WR49.3000. Technical Report NREL/TP-5500-52234 October 2011 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401 303-275-3000 * www.nrel.gov Contract No. DE-AC36-08GO28308

90

An Overview of the New Residential Water Heater Efficiency Standards  

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

An Overview of the New Residential Water Heater Efficiency Standards An Overview of the New Residential Water Heater Efficiency Standards Speaker(s): Alex Lekov Date: April 26, 2010 - 12:00pm Location: 90-3122 DOE issued new standards for residential water heaters last month that will save an estimated 2.6 quads of energy over 30 years. For most product sizes sold, the new standards can be met with modest changes, such as adding more insulation to today's conventional tank-style water heaters. For the most common size electric water heater (50 gallons), the standards will save 4 percent, while for the most common size gas water heater (40 gallons), the new standards will save 3 percent. However, for the biggest products (those with over 55 gallons in storage capacity, which is about 9% and 4% of the electric and gas storage water heater markets, respectively), the new

91

Carbon Dioxide Heat Pump Water Heater Research Project | Department of  

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

Emerging Technologies » Carbon Dioxide Heat Pump Water Heater Emerging Technologies » Carbon Dioxide Heat Pump Water Heater Research Project Carbon Dioxide Heat Pump Water Heater Research Project The U.S. Department of Energy is currently conducting research into carbon dioxide (CO2) heat pump water heaters. This project will employ innovative techniques to adapt water heating technology to meet U.S. market requirements, including specifications, cost, and performance targets. Carbon dioxide is a refrigerant with a global warming potential (GWP) of 1. The CO2 heat pump water heater research seeks to develop an improved life cycle climate performance compared to conventional refrigerants. For example, R134a, another type of refrigerant, has a GWP of 1,300. Project Description This project seeks to develop a CO2-based heat pump water heater (HPWH)

92

Aiken Electric Cooperative Inc - Residential Water Heater Rebate Program |  

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

Aiken Electric Cooperative Inc - Residential Water Heater Rebate Aiken Electric Cooperative Inc - Residential Water Heater Rebate Program Aiken Electric Cooperative Inc - Residential Water Heater Rebate Program < Back Eligibility Residential Savings Category Appliances & Electronics Water Heating Program Info State South Carolina Program Type Utility Rebate Program Rebate Amount Free high efficiency water Heater; $200 installation fee Water heater and timer with normal installation: $2.50 credit for 10 years Timer only: $200 cash payment and $2.50 credit for 10 years New construction contract home: $250 Provider Aiken Electric Cooperative Aiken Electric Cooperative offers residential members rebates for installing high-efficiency electric water heaters and/or timers in their homes. Customers have four rebate options:

93

Coweta-Fayette EMC - Residential Solar Water Heater Rebate Program  

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

Coweta-Fayette EMC - Residential Solar Water Heater Rebate Program Coweta-Fayette EMC - Residential Solar Water Heater Rebate Program (Georgia) Coweta-Fayette EMC - Residential Solar Water Heater Rebate Program (Georgia) < Back Eligibility Residential Savings Category Heating & Cooling Solar Water Heating Program Info State Georgia Program Type Utility Rebate Program Rebate Amount Existing Homes Solar Water Heater: $750 New Homes Solar Water Heater: $1,250 - $1,500 Provider Coweta-Fayette Electric Membership Corporation Coweta-Fayette Electric Membership Corporation (EMC) provides electric and natural gas service to 58,000 customers in Georgia's Coweta, Fayette, Meriwether, Heard, Troop and Fulton counties. Currently, Coweta-Fayette EMC offers rebates on solar water heaters from $750 up to $1,500 as part of the Touchstone Energy Home Program. Solar

94

Linn County Rural Electric Cooperative - Solar Water Heater Rebate Program  

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

Linn County Rural Electric Cooperative - Solar Water Heater Rebate Linn County Rural Electric Cooperative - Solar Water Heater Rebate Program Linn County Rural Electric Cooperative - Solar Water Heater Rebate Program < Back Eligibility Agricultural Commercial Residential Savings Category Heating & Cooling Solar Water Heating Program Info State Iowa Program Type Utility Rebate Program Rebate Amount $500 Provider Linn County Rural Electric Cooperative Association Linn County Rural Electric Cooperative Association (Linn County RECA) is a member-owned cooperative. To encourage energy efficiency, Linn County offers a number of rebates to commercial, residential, and agricultural customers. Owners of both new construction and existing buildings are eligible for a $500 rebate for solar water heaters. The water heaters must have an auxiliary tank of at least 40 gallons and the solar water heater

95

Rock Hill Utilities - Water Heater and Heat Pump Rebate Program |  

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

Rock Hill Utilities - Water Heater and Heat Pump Rebate Program Rock Hill Utilities - Water Heater and Heat Pump Rebate Program Rock Hill Utilities - Water Heater and Heat Pump Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Heat Pumps Appliances & Electronics Water Heating Program Info State South Carolina Program Type Utility Rebate Program Rebate Amount Water Heater: up to $275 Heat Pump Replacement: $400 Provider Rock Hill Utilities Through the SmartChoice program, Rock Hill Utilities offers rebates for water heater and heat pump replacements. Information on financing for heat pumps can also be found on the web site listed above. If both the water heater and heat pump are purchased then the customer may qualify for the Great Rate program. The Great Rate program will add a 25% discount to a

96

Alternatives for reducing hot-water bills  

SciTech Connect (OSTI)

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

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

1981-06-01T23:59:59.000Z

97

The Trials and Tribulations of Testing Water Heaters  

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

The Trials and Tribulations of Testing Water Heaters The Trials and Tribulations of Testing Water Heaters Speaker(s): James Lutz Date: August 14, 2001 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Julie Osborn During our work on efficiency standards for electric water heaters, we discovered significant discrepancies between the rated and tested efficiencies of the highest rated electric resistance water heaters. For high efficiency electric resistance water heaters with an Energy Factor above .92, the heat losses are so small that minor flaws in the tank or obscure problems in the test procedure become more apparent. This seminar reports on our investigation into the causes of inconsistent results obtained during testing of high efficiency electric resistance water heaters at different test labs. We discovered some reasons for the

98

Water Heaters and Hot Water Distribution Systems  

E-Print Network [OSTI]

from controlling heat loss through the distribution pipes.distribution system configurations; a collection of analytical heat lossdistribution system configurations; a collection of analytical heat loss

Lutz, Jim

2012-01-01T23:59:59.000Z

99

Water Heaters and Hot Water Distribution Systems  

E-Print Network [OSTI]

Building Energy Efficiency Standards .. 4 Multi-FamilyBuilding Energy Efficiency Standards 11 Multi-FamilyBuilding Energy Efficiency Standards 48 Multi-Family

Lutz, Jim

2012-01-01T23:59:59.000Z

100

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

SciTech Connect (OSTI)

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

Hudon, K.

2012-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "hot water heaters" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

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

E-Print Network [OSTI]

as conventional electric resistance water heaters, with thetwo technologies: (1) an electric resistance storage watertransfers heat from the electric resistance element to the

Franco, Victor

2011-01-01T23:59:59.000Z

102

Clark Public Utilities - Solar Water Heater Rebate | Department of Energy  

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

Clark Public Utilities - Solar Water Heater Rebate Clark Public Utilities - Solar Water Heater Rebate Clark Public Utilities - Solar Water Heater Rebate < Back Eligibility Commercial Residential Savings Category Heating & Cooling Solar Water Heating Program Info State District of Columbia Program Type Utility Rebate Program Rebate Amount $500 Provider Clark PUD Clark Public Utilities offers a rebate of $500 to customers who install a solar water heating system. Customers must own the residence or business where the solar water heating system is installed and must have an electric water heater. In addition, Clark Public Utilities offers a [http://dsireusa.org/incentives/incentive.cfm?Incentive_Code=WA29F&re=1&ee=1 loan program] for eligible solar water heater equipment. For additional information, call Energy Services at (360) 992-3355.

103

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

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

Clay Electric Cooperative, Inc - Energy Smart Solar Water Heater Clay Electric Cooperative, Inc - Energy Smart Solar Water Heater Rebate Program Clay Electric Cooperative, Inc - Energy Smart Solar Water Heater Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Solar Water Heating Maximum Rebate $600 Program Info State Florida Program Type Utility Rebate Program Rebate Amount 0.01 per BTU output Provider Clay Electric Co-op Clay Electric Cooperative (CEC) provides a rebate of $0.01 per BTU output to its residential members when they purchase qualified solar water heaters. This rebate is capped at 60,000 BTUs per system, or $600. Eligible solar water heaters can be either passive or active systems. The proposed solar system must meet Florida Solar Energy Center (FSEC) specifications and be installed by a contractor certified to install solar water heating

104

Tri-County Electric Cooperative - Energy Efficient Water Heater Rebate  

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

Tri-County Electric Cooperative - Energy Efficient Water Heater Tri-County Electric Cooperative - Energy Efficient Water Heater Rebate Program Tri-County Electric Cooperative - Energy Efficient Water Heater Rebate Program < Back Eligibility Commercial Residential Savings Category Appliances & Electronics Water Heating Program Info State Texas Program Type Utility Rebate Program Rebate Amount $75 Provider Tri-County Electric Cooperative Tri-County Electric Cooperative offers a $75 rebate on the purchase of energy-efficient electric water heaters. The rebate is valid for new or replacement units which have an Energy Factor Rating of 0.90 or higher. The minimum tank size is 40 gallons, with a minimum 4,500 watt heating element. For validation purposes, a copy of the sales or installation receipt must accompany the [http://www.tcectexas.com/Forms/water%20heater%20rebate%20form.pdf

105

Cost of Increased Energy Efficiency for Residential Water Heaters  

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

Cost of Increased Energy Efficiency for Residential Water Heaters Cost of Increased Energy Efficiency for Residential Water Heaters Speaker(s): Alex Lekov Date: March 22, 2001 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Julie Osborn This presentation describes the analysis of the costs of increased energy efficiency for residential water heaters. Here, we focus on the cost and efficiency data for electric and gas-fired water heaters. This data formed the basis of the Technical Support Document for the Department of Energy's (DOE) Final Rule on Water Heaters. The engineering analysis uses computer simulation models to investigate the efficiency improvements due to design options and combinations thereof. The analysis covers four polyurethane foam insulation types based on non-ozone-depleting substances as blowing

106

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

Broader source: Energy.gov [DOE]

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

107

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

SciTech Connect (OSTI)

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

Lutz, Jim; Biermayer, Peter

2008-04-17T23:59:59.000Z

108

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

SciTech Connect (OSTI)

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

Not Available

2012-09-01T23:59:59.000Z

109

Evaluation of TANK water heater simulation model as embedded in HWSim  

E-Print Network [OSTI]

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

Lutz, Jim

2012-01-01T23:59:59.000Z

110

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

E-Print Network [OSTI]

Conservation Standards for Residential Water Heaters, Direct Heating Equipment, and PoolConservation Program for Consumer Products: Test Procedures for Residential Water Heaters, Direct Heating Equipment, and Pool

Lutz, Jim

2012-01-01T23:59:59.000Z

111

Blue Ridge Mountain Electric Membership Corporation - Water Heater Rebate  

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

You are here You are here Home » Blue Ridge Mountain Electric Membership Corporation - Water Heater Rebate Program Blue Ridge Mountain Electric Membership Corporation - Water Heater Rebate Program < Back Eligibility Residential Savings Category Home Weatherization Commercial Weatherization Sealing Your Home Heating & Cooling Commercial Heating & Cooling Cooling Construction Design & Remodeling Ventilation Manufacturing Heat Pumps Appliances & Electronics Water Heating Program Info State Georgia Program Type Utility Rebate Program Rebate Amount In-Home Energy Evaluation Program Windows: $500 Duct Repair: $500 Rehabilitation Work: $250 HVAC Replacement: $250/unit HVAC Tune-up: $150/unit Insulation: $500 Water Heater and Pipe Insulation: $50 Air Sealing: $500 Energy Right Program

112

New Braunfels Utilities - Residential Solar Water Heater Rebate Program |  

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

New Braunfels Utilities - Residential Solar Water Heater Rebate New Braunfels Utilities - Residential Solar Water Heater Rebate Program New Braunfels Utilities - Residential Solar Water Heater Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Solar Water Heating Program Info State Texas Program Type Utility Rebate Program Rebate Amount $0.265/kWh Provider New Braunfels Utilities New Braunfels Utilities offers a rebate for residential customers who purchase and install solar water heating systems on eligible homes. A rebate of the equivalent of $0.265 per kWh is available to these customers. The maximum rebate amount is $900 for participating customers. Applicants must have an active residential electric service account with NBU in order to be eligible. Solar water heaters must preheat water for an electric

113

The Impact of Blowing Agents on Residential Water Heater Performance  

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

The Impact of Blowing Agents on Residential Water Heater Performance The Impact of Blowing Agents on Residential Water Heater Performance Title The Impact of Blowing Agents on Residential Water Heater Performance Publication Type Report LBNL Report Number LBNL-47352 Year of Publication 2001 Authors Lekov, Alexander B., James D. Lutz, Camilla Dunham Whitehead, and James E. McMahon Document Number LBNL-47352 Date Published January 12 Abstract The National Appliance Energy Conservation Act of 1987 (NAECA) requires the U.S. Department of Energy (DOE) to consider amendments to the energy conservation standards to increase energy efficiency in residential water heaters. A driving force affecting efficiency is the ozone-depletion regulation regarding blowing agents for insulation in all water heater fuel types. This paper presents results of cost and efficiency impacts of three potential blowing agents. Residential water heaters are typically insulated with polyurethane foam in the space between the tank and the jacket. Currently, water heater manufacturers use HCFC-141b, an ozone-depleting substance, as a blowing agent. After 2003, as a result of the Montreal Protocol (1993), manufacturers must use blowing agents that do not deplete the ozone layer. The analysis presented in this paper considers three replacement candidates, HFC-245fa, HFC-134a, and cyclopentane by comparing their efficiency and cost effectiveness when applied to water heater insulation. This analysis used computer simulation models and other analytical methods to investigate the efficiency improvements due to different design options, when alternative blowing agents are applied. The calculations were based on the DOE test procedure for residential water heaters. The analysis used average manufacturer, retailer, and installer costs to calculate the total consumer costs. Consumer operating expenses were calculated based on modeled energy consumption under test procedure conditions and U.S. average energy prices. With this information, a cost-efficiency relationship was developed to show the average manufacturer and consumer cost to achieve increased efficiency.

114

Heat pump water heater and storage tank assembly  

DOE Patents [OSTI]

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

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

1999-09-07T23:59:59.000Z

115

Disaggregating residential hot water use. Part 2  

SciTech Connect (OSTI)

A major obstacle to gathering detailed data on end-use hot water consumption within residences and commercial buildings is the cost and complexity of the field tests. An earlier study by the authors presented a methodology that could accurately disaggregate hot water consumption into individual end-uses using only information on the flow of hot water from the water heater. The earlier methodology can be extended to a much larger population of buildings, without greatly increasing the cost and complexity of the data collection and analysis, by monitoring the temperature of the hot water lines that go to different parts of the building. For the three residences studied here, thermocouples /monitored the temperatures of four hot water lines at each site. The thermocouple readings provide a positive indication of when hot water starts to flow in a line. Since the end-uses served by each hot water line are known, the uncertainty in assigning a draw to a particular end-use is greatly reduced. Benefits and limitations for the methodology are discussed in the paper. Using the revised methodology, hot water usage in three residences is disaggregated into the following end-uses: showers, baths, clothes washing, dishwashing, kitchen sink, and bathroom sink. For two residences, the earlier methodology--which does not use the thermocouple data--is also used to disaggregate the same draw data.

Lowenstein, A. [AIL Research, Inc., Princeton, NJ (United States); Hiller, C.C. [Electric Power Research Inst., Palo Alto, CA (United States)

1998-10-01T23:59:59.000Z

116

Control Strategy for Domestic Water Heaters during Peak Periods and its Impact on the Demand for Electricity  

Science Journals Connector (OSTI)

Because they store hot water, water heaters are easily-shifted loads that can be controlled to reduce peak demands. However, load shifting may have some detrimental consequences on the domestic hot water supply temperature if the heating element is deactivated for a long period of time. Furthermore, a new peak may be caused if a significant number of heaters are reactivated at the same time. This study presents a control strategy for water heaters that minimizes the pick-up demand when the heating elements are reactivated at the end of a load shifting period and that ensures, in all cases, the client's hot water supply. The study is based on a simulation model of a water heater that was experimentally validated and takes into account the diversity of the population's hot water withdrawal profile. More specifically, the data of 8,167 real water withdrawal profiles of several clients were input into the simulation model in order to evaluate the performance of water heaters under different operating conditions.

Alain Moreau

2011-01-01T23:59:59.000Z

117

Covered Product Category: Gas Storage Water Heaters | Department of Energy  

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

Gas Storage Water Heaters Gas Storage Water Heaters Covered Product Category: Gas Storage Water Heaters October 7, 2013 - 10:43am Addthis ENERGY STAR Qualified Products FEMP provides acquisition guidance across a variety of product categories, including gas storage water heaters, which are an ENERGY STAR®-qualified product category. Federal laws and executive orders mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law. Most manufacturers display the ENERGY STAR label on complying models. For a model not displaying this label, check the manufacturer's literature to determine if it meets the efficiency requirements outlined by ENERGY STAR. Performance Requirements for Federal Purchases For the most up-to-date efficiency levels required by ENERGY STAR, look for

118

Split system CO2 heat pump water heaters  

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

Split-system-CO2-heat-pump-water-heaters- Sign In About | Careers | Contact | Investors | bpa.gov Search Policy & Reporting Expand Policy & Reporting EE Sectors Expand EE...

119

Monitoring SERC Technologies: On-Demand Tankless Water Heaters  

Broader source: Energy.gov [DOE]

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

120

New Home Buyer Solar Water Heater Trade-Off Study  

SciTech Connect (OSTI)

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

Symmetrics Marketing Corporation

1999-08-18T23:59:59.000Z

Note: This page contains sample records for the topic "hot water heaters" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Marshall Municipal Utilities- Solar Thermal Water Heater Rebate Program  

Broader source: Energy.gov [DOE]

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

122

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

SciTech Connect (OSTI)

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

Henderson, H.; Wade, J.

2014-04-01T23:59:59.000Z

123

Determining Benefits and Costs of Improved Water Heater Efficiencies  

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

Determining Benefits and Costs of Improved Water Heater Efficiencies Determining Benefits and Costs of Improved Water Heater Efficiencies Title Determining Benefits and Costs of Improved Water Heater Efficiencies Publication Type Report LBNL Report Number LBNL-45618 Year of Publication 2000 Authors Lekov, Alexander B., James D. Lutz, Xiaomin Liu, Camilla Dunham Whitehead, and James E. McMahon Document Number LBNL-45618 Date Published May 4 Abstract Economic impacts on individual consumers from possible revisions to U.S. residential water heater energy-efficiency standards are examined using a life-cycle cost (LCC) analysis. LCC is the consumer's cost of purchasing and installing a water heater and operating it over its lifetime. This approach makes it possible to evaluate the economic impacts on individual consumers from the revised standards. The methodology allows an examination of groups of the population which benefit or lose from suggested efficiency standards. The results show that the economic benefits to consumers are significant. At the efficiency level examined in this paper, 35% of households with electric water heaters experience LCC savings, with an average savings of $106, while 4% show LCC losses, with an average loss of $40 compared to a pre-standard LCC average of $2,565. The remainder of the population (61%) are largely unaffected.

124

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

E-Print Network [OSTI]

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

Oak Ridge National Laboratory

125

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

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

Estimating the Cost and Energy Efficiency of a Solar Water Heater Estimating the Cost and Energy Efficiency of a Solar Water Heater Estimating the Cost and Energy Efficiency of a Solar Water Heater May 30, 2012 - 3:09pm Addthis Solar water heaters are more efficient the gas or electric heaters. | Chart credit ENERGY STAR Solar water heaters are more efficient the gas or electric heaters. | Chart credit ENERGY STAR What does this mean for me? Solar water heaters cost more to purchase and install but may save you money in the long run. Estimate the annual operating costs and compare several solar water heaters to determine whether it is worth investing in a more efficient system. Solar water heating systems usually cost more to purchase and install than conventional water heating systems. However, a solar water heater can

126

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

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

Estimating the Cost and Energy Efficiency of a Solar Water Heater Estimating the Cost and Energy Efficiency of a Solar Water Heater Estimating the Cost and Energy Efficiency of a Solar Water Heater May 30, 2012 - 3:09pm Addthis Solar water heaters are more efficient the gas or electric heaters. | Chart credit ENERGY STAR Solar water heaters are more efficient the gas or electric heaters. | Chart credit ENERGY STAR What does this mean for me? Solar water heaters cost more to purchase and install but may save you money in the long run. Estimate the annual operating costs and compare several solar water heaters to determine whether it is worth investing in a more efficient system. Solar water heating systems usually cost more to purchase and install than conventional water heating systems. However, a solar water heater can

127

List of Water Heaters Incentives | Open Energy Information  

Open Energy Info (EERE)

Heaters Incentives Heaters Incentives Jump to: navigation, search The following contains the list of 973 Water Heaters Incentives. CSV (rows 1-500) CSV (rows 501-973) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active AEP Ohio - Commercial New Construction Energy Efficiency Rebate Program (Ohio) Utility Rebate Program Ohio Commercial Industrial Local Government Municipal Utility Nonprofit Schools State Government Central Air conditioners Chillers Comprehensive Measures/Whole Building Custom/Others pending approval Energy Mgmt. Systems/Building Controls Heat pumps Lighting Lighting Controls/Sensors Motor VFDs Motors Water Heaters Commercial Cooking Equipment Commercial Refrigeration Equipment Room Air Conditioners Yes AEP Public Service Company of Oklahoma - Residential Efficiency Rebate Program (Oklahoma) Utility Rebate Program Oklahoma Residential Building Insulation

128

A model for improvement of water heating heat exchanger designs for residential heat pump water heaters.  

E-Print Network [OSTI]

??Heat pump water heaters are a promising technology to reduce energy use and greenhouse gas emissions. A key component is the water heating heat exchanger. (more)

Weerawoot, Arunwattana

2010-01-01T23:59:59.000Z

129

Outdoor Outfitter Gets Greener With Solar Water Heater | Department of  

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

Outdoor Outfitter Gets Greener With Solar Water Heater Outdoor Outfitter Gets Greener With Solar Water Heater Outdoor Outfitter Gets Greener With Solar Water Heater October 8, 2010 - 12:51pm Addthis L.L. Bean’s flagship store sees nearly 3 million visitors each year. The store now uses solar-heated water for showers, restrooms and two cafes. | Photo courtesy of L.L. Bean | L.L. Bean's flagship store sees nearly 3 million visitors each year. The store now uses solar-heated water for showers, restrooms and two cafes. | Photo courtesy of L.L. Bean | Lindsay Gsell L.L. Bean is known for its outdoor apparel- jackets, backpacks and cozy winter sweaters. However, the company does more than just dress for the outdoors, it also works to protect and preserve it. For nearly 100 years, L.L. Bean has been committed to environmental conservation and

130

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

SciTech Connect (OSTI)

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

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

2013-11-13T23:59:59.000Z

131

NREL: Learning - Student Resources on Solar Hot Water  

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

Solar Hot Water Solar Hot Water Photo of a school building next to a pond. Roy Lee Walker Elementary School in Texas incorporates many renewable energy design features, including solar hot water heating. The following resources will help you learn more about solar water heating systems. If you are unfamiliar with this technology, see the introduction to solar hot water. Grades 7-12 NREL Educational Resources Educational resources available to students from the National Renewable Energy Laboratory. High School and College Level U.S. Department of Energy's Energy Savers: Solar Water Heaters Features comprehensive basic information and resources. U.S. Department of Energy's Energy Savers: Solar Swimming Pool Heaters Features comprehensive basic information and resources. U.S. Department of Energy Solar Decathlon

132

FEMP Designated Product Assessment for Commercial Gas Water Heaters  

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

FEMP Designated Product Assessment for Commercial Gas Water Heaters FEMP Designated Product Assessment for Commercial Gas Water Heaters Title FEMP Designated Product Assessment for Commercial Gas Water Heaters Publication Type Report LBNL Report Number LBNL-5514E Year of Publication 2010 Authors Lutz, James D. Subsidiary Authors Energy Analysis Department Document Number LBNL-5514E Pagination 8 Date Published April 1 Publisher Lawrence Berkeley National Laboratory City Berkeley ISBN Number LBNL-5514E Abstract None Notes This work was supported by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Building Technology, State, and Community Programs, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. Attachment Size PDF 240.22 KB Google Scholar BibTex RIS RTF XML Alternate URL: http://eetd.lbl.gov/node/50317

133

Experimental study of integrated collector storage solar water heaters  

Science Journals Connector (OSTI)

Three Integrated Collector Storage Solar Water Heaters (ICSSWH) have been designed, constructed and experimentally studied in comparison to a Flat Plate Thermosiphonic Unit (FPTU). Each of the ICS experimental models consists of one cylindrical tank horizontally mounted in a stationary symmetrical Compound Parabolic Concentrating (CPC) reflector trough. The main objective is the design and construction of low cost solar water heaters with improved thermal performance and lower possible depths. The experimental models can be mounted on horizontal as well as on inclined roofs by adopting the lowest possible depth. The results show that these solar devices perform more than effectively all year long. This could contribute significantly on the development of ICS type solar water heaters.

M. Souliotis; D. Chemisana; Y.G. Caouris; Y. Tripanagnostopoulos

2013-01-01T23:59:59.000Z

134

Covered Product Category: Residential Heat Pump Water Heaters  

Broader source: Energy.gov [DOE]

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

135

Covered Product Category: Residential Electric Resistance Water Heaters  

Broader source: Energy.gov [DOE]

FEMP sets Federal efficiency requirements and provides acquisition guidance across a variety of product categories, including residential electric resistance water heaters. Federal laws and requirements mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law.

136

Applications Tests of Commercial Heat Pump Water Heaters  

E-Print Network [OSTI]

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

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

1987-01-01T23:59:59.000Z

137

Covered Product Category: Residential Gas Storage Water Heaters  

Broader source: Energy.gov [DOE]

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

138

Green Systems Solar Hot Water  

E-Print Network [OSTI]

,2; basement) Pre-heats water so water heaters don't need to use as much energy Gas-powered, high efficiency heated water before it is circulated through the building Two gas boilers (GWB-1,2; basement) can be used

Schladow, S. Geoffrey

139

HVAC, Water Heater and Appliance R&D - 2014 BTO Peer Review ...  

Energy Savers [EERE]

HVAC, Water Heater and Appliance R&D - 2014 BTO Peer Review HVAC, Water Heater and Appliance R&D - 2014 BTO Peer Review Presenter: Tony Bouza, U.S. Department of Energy This...

140

Laboratory Performance Evaluation of Residential Integrated Heat Pump Water Heaters  

SciTech Connect (OSTI)

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

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

2014-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "hot water heaters" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Modeling and Test-and-Rate Methods for Innovative Thermosiphon Solar Water Heaters: Preprint  

SciTech Connect (OSTI)

Conference paper regarding research in modeling and test-and-rate methods for thermosiphon solar domestic water heaters.

Burch, J.; Shoukas, G.; Brandemuhl, M.; Krarti, M.

2006-05-01T23:59:59.000Z

142

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

Broader source: Energy.gov [DOE]

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

143

Hot New Advances in Water Heating Technology | Department of Energy  

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

Hot New Advances in Water Heating Technology Hot New Advances in Water Heating Technology Hot New Advances in Water Heating Technology April 18, 2013 - 1:15pm Addthis Learn how a cooperative R&D agreement with the Energy Department's Oak Ridge National Laboratory helped contributed to the success of GE's GeoSpring Hybrid Water Heater -- one of the most efficient electric heat pump water heaters on the market today. Rebecca Matulka Rebecca Matulka Digital Communications Specialist, Office of Public Affairs Got Energy Efficiency Questions? Our energy efficiency and renewable energy experts will answer your questions about ways to save money and incorporate renewable energy into your home during our Earth Day Google+ Hangout on April 22 at 3 pm ET. Submit your questions on Twitter, G+ and YouTube using #askEnergy,

144

Hot New Advances in Water Heating Technology | Department of Energy  

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

Hot New Advances in Water Heating Technology Hot New Advances in Water Heating Technology Hot New Advances in Water Heating Technology April 18, 2013 - 1:15pm Addthis Learn how a cooperative R&D agreement with the Energy Department's Oak Ridge National Laboratory helped contributed to the success of GE's GeoSpring Hybrid Water Heater -- one of the most efficient electric heat pump water heaters on the market today. Rebecca Matulka Rebecca Matulka Digital Communications Specialist, Office of Public Affairs Got Energy Efficiency Questions? Our energy efficiency and renewable energy experts will answer your questions about ways to save money and incorporate renewable energy into your home during our Earth Day Google+ Hangout on April 22 at 3 pm ET. Submit your questions on Twitter, G+ and YouTube using #askEnergy,

145

Assessment of Unglazed Solar Domestic Water Heaters  

SciTech Connect (OSTI)

Conference paper investigating cost-performance tradeoffs in replacing glazed collectors with unglazed collectors in solar domestic water heating systems.

Burch, J.; Salasovich, J.; Hillman, T.

2005-12-01T23:59:59.000Z

146

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

SciTech Connect (OSTI)

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

Maguire, J.; Burch, J.

2013-08-01T23:59:59.000Z

147

Evaluation of TANK Water Heater Simulation Model as Embedded in HWSim  

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

TANK Water Heater Simulation Model as Embedded in HWSim TANK Water Heater Simulation Model as Embedded in HWSim Title Evaluation of TANK Water Heater Simulation Model as Embedded in HWSim Publication Type Report LBNL Report Number LBNL-5092E Year of Publication 2010 Authors Lutz, James D. Document Number LBNL-5092E Pagination 11 Date Published December 22 Publisher Lawrence Berkeley National Laboratory City Berkeley ISBN Number LBNL-5092E Abstract This report evaluates the hot water temperatures and flow rates as calculated by the combined HWSim and TANK simulation models. Notes This work was sponsored by the Gas Technology Institute (GTI) which is funded by the California Energy Commission, Public Interest Energy Research (PIER) Program, under Residential Water Heating Program Contract No. 500-08-060. This work was supported by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Building Technology, State, and Community Programs, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.

148

Placing technology : examining the emerging use of solar water heaters in Oaxaca, Mexico: Examining the emerging use of solar water heaters in Oaxaca, Mexico.  

E-Print Network [OSTI]

??This study is an examination of the (broadly envisioned) process that has led to the emerging use of solar water heaters in Oaxaca de Jua?rez, (more)

Shannon, Steven Jacob

2011-01-01T23:59:59.000Z

149

Salem Electric- Solar Water Heater Rebate  

Broader source: Energy.gov [DOE]

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

150

Dehumidifying water heater. Technical progress report  

SciTech Connect (OSTI)

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

Not Available

1992-08-18T23:59:59.000Z

151

Residential hot water distribution systems: Roundtablesession  

SciTech Connect (OSTI)

Residential building practice currently ignores the lossesof energy and water caused by the poor design of hot water systems. Theselosses include: combustion and standby losses from water heaters, thewaste of water (and energy) while waiting for hot water to get to thepoint of use; the wasted heat as water cools down in the distributionsystem after a draw; heat losses from recirculation systems and thediscarded warmth of waste water as it runs down the drain. Severaltechnologies are available that save energy (and water) by reducing theselosses or by passively recovering heat from wastewater streams and othersources. Energy savings from some individual technologies are reported tobe as much as 30 percent. Savings calculations of prototype systemsincluding bundles of technologies have been reported above 50 percent.This roundtable session will describe the current practices, summarizethe results of past and ongoing studies, discuss ways to think about hotwater system efficiency, and point to areas of future study. We will alsorecommend further steps to reduce unnecessary losses from hot waterdistribution systems.

Lutz, James D.; Klein, Gary; Springer, David; Howard, Bion D.

2002-08-01T23:59:59.000Z

152

Laboratory Performance Evaluation of Residential Integrated Heat Pump Water Heaters  

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

Performance Performance Evaluation of Residential Integrated Heat Pump Water Heaters B. Sparn, K. Hudon, and D. Christensen Technical Report NREL/TP-5500-52635 September 2011 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401 303-275-3000 * www.nrel.gov Contract No. DE-AC36-08GO28308 Laboratory Performance Evaluation of Residential Integrated Heat Pump Water Heaters B. Sparn, K. Hudon, and D. Christensen Prepared under Task Nos. WTN9.1000, ARRB.2204 Technical Report NREL/TP-5500-52635 September 2011 NOTICE This report was prepared as an account of work sponsored by an agency of the United States government.

153

Building Technologies Office: Carbon Dioxide-Based Heat Pump Water Heater  

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

Carbon Dioxide-Based Carbon Dioxide-Based Heat Pump Water Heater Research Project to someone by E-mail Share Building Technologies Office: Carbon Dioxide-Based Heat Pump Water Heater Research Project on Facebook Tweet about Building Technologies Office: Carbon Dioxide-Based Heat Pump Water Heater Research Project on Twitter Bookmark Building Technologies Office: Carbon Dioxide-Based Heat Pump Water Heater Research Project on Google Bookmark Building Technologies Office: Carbon Dioxide-Based Heat Pump Water Heater Research Project on Delicious Rank Building Technologies Office: Carbon Dioxide-Based Heat Pump Water Heater Research Project on Digg Find More places to share Building Technologies Office: Carbon Dioxide-Based Heat Pump Water Heater Research Project on AddThis.com...

154

Building Technologies Office: Gas-Fired Absorption Heat Pump Water Heater  

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

Gas-Fired Absorption Gas-Fired Absorption Heat Pump Water Heater Research Project to someone by E-mail Share Building Technologies Office: Gas-Fired Absorption Heat Pump Water Heater Research Project on Facebook Tweet about Building Technologies Office: Gas-Fired Absorption Heat Pump Water Heater Research Project on Twitter Bookmark Building Technologies Office: Gas-Fired Absorption Heat Pump Water Heater Research Project on Google Bookmark Building Technologies Office: Gas-Fired Absorption Heat Pump Water Heater Research Project on Delicious Rank Building Technologies Office: Gas-Fired Absorption Heat Pump Water Heater Research Project on Digg Find More places to share Building Technologies Office: Gas-Fired Absorption Heat Pump Water Heater Research Project on AddThis.com...

155

Inherent freeze protection for solar water heaters  

SciTech Connect (OSTI)

Research and development of a method for protection of a solar collector from freezing is described. The method is shown to be technically and economically feasible. A prototype water heating system using the inherent freeze protection method was successfully operated during the winter of 1980 to 1981.

Jeter, S.M.; Leonaitis, L.L.; Leonaitis, L.L.

1981-05-01T23:59:59.000Z

156

Advances in the Research of Heat Pump Water Heaters  

E-Print Network [OSTI]

ICEBO2006, Shenzhen, China Renewable Energy Resources and a Greener Future Vol.VIII-12-2 1 Advances in the Research of Heat Pump Water Heaters Shangli Shan Dandan Wang Ruixiang Wang Master Master Professor Beijing...) [21] Wang sui-lin . Affection on fin-and-tube Heat Exchanger's Properties by non azeotropic mixtures[J] . Fluid machinery , 1996 , 24 (5) [22] Ge run-ting . Foundation of Dynamic Parameter Model and Theoritical Calculation of Evaporator...

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

2006-01-01T23:59:59.000Z

157

Electric Water Heater Modeling and Control Strategies for Demand Response  

SciTech Connect (OSTI)

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

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

2012-07-22T23:59:59.000Z

158

TYPICAL HOT WATER DRAW PATTERNS BASED ON FIELD DATA  

SciTech Connect (OSTI)

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

Lutz, Jim; Melody, Moya

2012-11-08T23:59:59.000Z

159

NREL: Learning - Solar Hot Water  

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

Hot Water Hot Water Photo of solar collectors on a roof for a solar hot water system. For solar hot water systems, flat-plate solar collectors are typically installed facing south on a rooftop. The shallow water of a lake is usually warmer than the deep water. That's because the sunlight can heat the lake bottom in the shallow areas, which in turn, heats the water. It's nature's way of solar water heating. The sun can be used in basically the same way to heat water used in buildings and swimming pools. Most solar water heating systems for buildings have two main parts: a solar collector and a storage tank. The most common collector is called a flat-plate collector. Mounted on the roof, it consists of a thin, flat, rectangular box with a transparent cover that faces the sun. Small tubes

160

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

E-Print Network [OSTI]

advances to commercialize stand-alone electric heat-pump storage hot water heaters. These systems offer design uses multiple systems and fuels to provide thermal services, the emerging generation of heat to experience this change as air-source heat-pump water heaters deliver obvious energy savings over electric

California at Davis, University of

Note: This page contains sample records for the topic "hot water heaters" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Economic Analysis of Solar Water Heaters in GuangZhou  

E-Print Network [OSTI]

ICEBO2006, Shenzhen, China Policy for Energy Efficiency and Comfort, Vol.VII-4-4 Economic Analysis of Solar Water Heaters in GuangZhou Ying Wang LiHua Zhao Graduated Student Associate Professor School of Architecture, South China... and lasting from a social benefit point of view in order to sustainable develop and ICEBO2006, Shenzhen, China Policy for Energy Efficiency and Comfort, Vol.VII-4-4 benefit our offspring. REFERENCES [1] Yi Yun, ShanMing Wang. Market insight of solar...

Wang, Y.; Zhao, L.

2006-01-01T23:59:59.000Z

162

An Evaluation of the Water Heater Load Potential for Providing Regulation Service  

SciTech Connect (OSTI)

This paper investigates the possibility of providing aggregated regulation services with small loads, such as water heaters or air conditioners. A direct-load control algorithm is presented to aggregate the water heater load for the purpose of regulation. A dual-element electric water heater model is developed, which accounts for both thermal dynamics and users water consumptions. A realistic regulation signal was used to evaluate the number of water heaters needed and the operational characteristics of a water heater when providing 2-MW regulation service. Modeling results suggest that approximately 33,333 water heaters are needed to provide a 2-MW regulation service 24 hours a day. However, if water heaters only provide regulation from 6:00 to 24:00, approximately 20,000 will be needed. Because the control algorithm has considered the thermal setting of the water heater, the customer comfort is obstructed little. Therefore, the aggregated regulation service provided by water heater loads can become a major source of revenue for load-service entities when the smart grid enables the direct load control.

Kondoh, Junji; Lu, Ning; Hammerstrom, Donald J.

2011-08-31T23:59:59.000Z

163

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

Broader source: Energy.gov [DOE]

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

164

Annual Operating Characteristics of Solar Central Water Heater System Assisted by Heat Pump  

Science Journals Connector (OSTI)

The solar central water heater (SCWH) could supply ... massive users effectively and reliably. A SCWH assisted by heat pump (SCWHP) was proposed...

Wei Hu; Zhaolin Gu; Shiyu Feng; Xiufeng Gao

2009-01-01T23:59:59.000Z

165

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

E-Print Network [OSTI]

as conventional electric resistance water heaters. Atwo technologies: (1) an electric resistance storage waterin heat pump or in electric resistance mode. The electric

Lekov, Alex

2011-01-01T23:59:59.000Z

166

Gas-Fired Absorption Heat Pump Water Heater Research Project | Department  

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

Emerging Technologies » Gas-Fired Absorption Heat Pump Water Emerging Technologies » Gas-Fired Absorption Heat Pump Water Heater Research Project Gas-Fired Absorption Heat Pump Water Heater Research Project The U.S. Department of Energy (DOE) is currently conducting research into carbon gas-fired absorption heat pump water heaters. This project will employ innovative techniques to increase water heating energy efficiency over conventional gas storage water heaters by 40%. Project Description This project seeks to develop a natural gas-fired water heater using an absorption heat. The development effort is targeting lithium bromide aqueous solutions as a working fluid in order to avoid the negative implications of using more toxic ammonia. Project Partners Research is being undertaken through a Cooperative Research and Development

167

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

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

Electric and Gas Water Heaters Electric and Gas Water Heaters Energy Cost Calculator for Electric and Gas Water Heaters October 8, 2013 - 2:26pm Addthis Vary equipment size, energy cost, hours of operation, and /or efficiency level. INPUT SECTION Input the following data (if any parameter is missing, calculator will set to default value). Defaults Type of Water Heater Electric Gas Electric Average Daily Usage (gallons per day)* gallons 64* Energy Factor† 0.92 (electric) 0.61 (gas) Energy Cost $ / kWh $0.06 per kWh $.60 per therm Quantity of Water Heaters to be Purchased unit(s) 1 unit * See assumptions for various daily water use totals. † The comparison assumes a storage tank water heater as the input type. To allow demand water heaters as the comparison type, users can specify an input EF of up to 0.85; however, 0.66 is currently the best available EF for storage water heaters.

168

Tankless water heaters fill the bill at fast-food restaurants  

SciTech Connect (OSTI)

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

Not Available

1988-02-01T23:59:59.000Z

169

Hot Showers, Fresh Laundry, Clean Dishes | Department of Energy  

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

Hot Showers, Fresh Laundry, Clean Dishes Hot Showers, Fresh Laundry, Clean Dishes Hot Showers, Fresh Laundry, Clean Dishes March 5, 2013 - 11:17am Addthis The GE GeoSpring™ Electric Heat Pump Water Heater is readily integrated into new and existing home designs. Taking up the same footprint as a traditional 50-gallon tank water heater, the Electric Heat Pump Water Heater uses the existing water heater's plumbing and electrical connections. Credit: GE The GE GeoSpring(tm) Electric Heat Pump Water Heater is readily integrated into new and existing home designs. Taking up the same footprint as a traditional 50-gallon tank water heater, the Electric Heat Pump Water Heater uses the existing water heater's plumbing and electrical connections. Credit: GE To introduce this new electric heat pump water heater, GE ran a memorable ad during the 2010 Winter Olympics featuring snow monkeys enjoying a hot soak. Credit: GE

170

Swimming Pool Heaters | Department of Energy  

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

Energy Efficiency Homes Water Heating Swimming Pool Heaters Swimming Pool Heaters July 10, 2014 Gas Swimming Pool Heaters Selecting the right kind of swimming pool heater...

171

Thermal performance analysis of a direct-expansion solar-assisted heat pump water heater  

Science Journals Connector (OSTI)

A direct-expansion solar-assisted heat pump water heater (DX-SAHPWH) is described, which can supply hot water for domestic use during the whole year. The system mainly employs a bare flat-plate collector/evaporator with a surface area of 4.2m2, an electrical rotary-type hermetic compressor, a hot water tank with the volume of 150L and a thermostatic expansion valve. R-22 is used as working fluid in the system. A simulation model based on lumped and distributed parameter approach is developed to predict the thermal performance of the system. Given the structure parameters, meteorological parameters, time step and final water temperature, the numerical model can output operational parameters, such as heat capacity, system COP and collector efficiency. Comparisons between the simulation results and the experimental measurements show that the model is able to give satisfactory predictions. The effect of various parameters, including solar radiation, ambient temperature, wind speed and compressor speed, has been analyzed on the thermal performance of the system.

X.Q. Kong; D. Zhang; Y. Li; Q.M. Yang

2011-01-01T23:59:59.000Z

172

CPS Energy- Solar Hot Water Rebate Program  

Broader source: Energy.gov [DOE]

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

173

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

SciTech Connect (OSTI)

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

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

2012-01-01T23:59:59.000Z

174

Comparative Environmental and Economic Analysis of Conventional and Nanofluid Solar Hot Water Technologies  

Science Journals Connector (OSTI)

Domestic solar hot water heaters for residential use in the Phoenix metropolitan area, as well as throughout the state of Arizona, are eligible for tax rebates at the state and federal level, in addition to incentive programs through local utilities. ... All of these studies have focused on utilizing solar hot water heaters in European countries, with most focusing only on the environmental aspect (8-10) and very limited prior works examining both the economic and environmental impacts (7). ... The nanofluid collector is expected to have the same lifetime as the conventional solar collector since it utilizes the same material technologies as a conventional collector. ...

Todd P. Otanicar; Jay S. Golden

2009-06-23T23:59:59.000Z

175

ENERGY STAR Residential Water Heaters to Save Americans Up to $823 Million  

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

STAR Residential Water Heaters to Save Americans Up to $823 STAR Residential Water Heaters to Save Americans Up to $823 Million in the Next Five Years ENERGY STAR Residential Water Heaters to Save Americans Up to $823 Million in the Next Five Years December 31, 2008 - 9:18am Addthis WASHINGTON - The U.S. Department of Energy (DOE) today announced the availability of ENERGY STAR® residential water heaters. With today's announcement, the ENERGY STAR® program now addresses every major residential appliance found in most American homes. Introduction of this product provides significant potential savings to consumers. Water heating represents up to 15.5 percent of national residential energy consumption, the second largest end use of energy in homes, following heating and cooling. Using one of five specified water heating technologies, ENERGY

176

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

DOE Patents [OSTI]

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

Andrews, J.W.

1980-06-25T23:59:59.000Z

177

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

SciTech Connect (OSTI)

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

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

2009-05-06T23:59:59.000Z

178

Buildings Energy Data Book: 5.4 Water Heaters  

Buildings Energy Data Book [EERE]

5 5 Water Heater Efficiencies 2005 2010 Efficiency Stock Minimum Best-Available Residential Type Parameter (1) Efficiency New Efficiency New Efficiency Electric Storage EF 0.90 0.90 (2) 0.95 (2) Electric Instantaneous EF 0.82 0.82 0.98 Electric Heat Pump EF 2.00 2.00 2.35 Gas-Fired Storage EF 0.60 0.59 (3) 0.85 (3) Gas-Fired Instantaneous EF 0.82 0.82 0.98 Oil-Fired Storage EF 0.50 0.53 (4) 0.68 (4) Solar SEF 2.50 N.A. 2.50 2007 2010 Efficiency Stock Minimum Best-Available Commercial Type Parameter (1) Efficiency New Efficiency New Efficiency Electric Storage Thermal Efficiency 0.98 0.98 (5) 0.98 (5) Electric Instantaneous Thermal Efficiency 0.98 0.98 0.98 Gas-Fired Storage Thermal Efficiency 0.78 0.80 (6) 0.96 (6) Gas-Fired Instantaneous Thermal Efficiency 0.77 0.80 0.85 Oil-Fired Storage Thermal Efficiency 0.79 0.78 (7) 0.85 (7) Note(s):

179

Ocala Utility Services - Solar Hot Water Heating Rebate Program |  

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

You are here You are here Home » Ocala Utility Services - Solar Hot Water Heating Rebate Program Ocala Utility Services - Solar Hot Water Heating Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Solar Water Heating Maximum Rebate One rebate per account Program Info State Florida Program Type Utility Rebate Program Rebate Amount $450 per system Provider Ocala Utility Services The Solar Water Heater Rebate Program is offered to residential retail electric customers by the City of Ocala Utility Services. Interested customers must complete an application and receive approval from the Ocala Utility Services before installing equipment. The application can be found on the [http://www.ocalafl.org/COO3.aspx?id=947 program web site.] The system must be installed by a licensed Florida contractor on the customer's

180

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

SciTech Connect (OSTI)

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

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

2012-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "hot water heaters" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Economics of Residential Gas Furnaces and Water Heaters in United States  

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

Economics of Residential Gas Furnaces and Water Heaters in United States Economics of Residential Gas Furnaces and Water Heaters in United States New Construction Market Speaker(s): Alex Lekov Gabrielle Wong-Parodi James McMahon Victor Franco Date: May 8, 2009 - 12:00pm Location: 90-3122 In the new single-family home construction market, the choice of what gas furnace and gas water heater combination to install is primarily driven by first cost considerations. In this study, the authors use a life-cycle cost analysis approach that accounts for uncertainty and variability of inputs to assess the economic benefits of installing different gas furnace and water heater combinations. Among other factors, it assesses the economic feasibility of eliminating the traditional metal vents and replacing them with vents made of plastic materials used in condensing and power vent

182

Critical Question #8: When are Heat Pump Water Heaters the Best Solution? |  

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

8: When are Heat Pump Water Heaters the Best 8: When are Heat Pump Water Heaters the Best Solution? Critical Question #8: When are Heat Pump Water Heaters the Best Solution? What do we know about actual performance compared to promised performance? What is the best way to manage the space conditioning impacts on a home? Is there an easy decision tree for deciding if this is the best solution for a particular home (Climate? Utility prices? Accessibility? Physical space constraints? Workforce?)? cq8_residential_hpwh_costs_maguire.pdf cq8_hpwh_performance_colon.pdf cq8_hpwhs_multifamily_weitzel.pdf More Documents & Publications Track A - Energy Systems Innovations Illustrative Calculation of Economics for Heat Pump and "Grid-Enabled" Water Heaters Standing Technical Committee Working Sessions

183

Development and Application of Engineering-Scale Solar Water Heater System Assisted by Heat Pump  

Science Journals Connector (OSTI)

An engineering-scale solar water heater system assisted by heat pump was developed based on ... . The subunits of modularized system include vacuum solar energy collectors, air source heat pump, ... Energy source...

Xiufeng Gao; Shiyu Feng; Wei Hu

2009-01-01T23:59:59.000Z

184

Design, modeling, and performance of four breadbox passive solar water heaters  

SciTech Connect (OSTI)

As part of the Southwest Border Regional Commission demonstration program on Solar Upgrading of Low-Income Housing, three different types of passive breadbox solar water heaters were designed. Using these designs, a total of six solar water heaters have been installed on public housing units in Las Cruces; these systems act as preheaters to the existing conventional gas-fired water heaters. Under a separate contract from the National Center for Appropriate Technology, four of these installations have been instrumented with two Btu meters each to measure the thermal output of both the solar preheater and conventional backup system. This has enabled measurement of the actual solar fraction of the four instrumented solar systems. The design and construction of the water heaters is described, and the actual performance of the systems is compared with the predicted performance.

Roberts, D. (Energy Management Services, Inc., Santa Fe, NM); Farrer, R.

1981-01-01T23:59:59.000Z

185

Tapping Solar for Hot Water and Cheaper Bills for Puerto Rico | Department  

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

Tapping Solar for Hot Water and Cheaper Bills for Puerto Rico Tapping Solar for Hot Water and Cheaper Bills for Puerto Rico Tapping Solar for Hot Water and Cheaper Bills for Puerto Rico November 3, 2010 - 10:00am Addthis Stephen Graff Former Writer & editor for Energy Empowers, EERE What does this mean for me? 150 new jobs. 1200 solar water heaters installed. In Puerto Rico, solar water heaters have been popular for decades. But even with energy savings, not everyone can afford one. Through a new Recovery Act-funded program for the island, more families are showering with water heated by the sun. The U.S. Department of Energy's new Weatherization Assistance Program (WAP) in Puerto Rico has made it a priority to install the systems in homes of income-eligible residents, as part of its weatherization assistance services. The Puerto Rico Energy Affairs Administration (PREAA), which

186

Commercial Solar Hot Water Financing Program  

Broader source: Energy.gov [DOE]

The Massachusetts Clean Energy Center (MassCEC) and Paradigm Partners are offering a solar hot water financing program in order to meet MassCEC's objective of growing the commercial solar hot water...

187

Analysis of field-test data from domestic solar-water heaters in the southern United States, period through September 1982  

SciTech Connect (OSTI)

The monitored performance data used here was gathered from 137 solar water heaters. All but 51 are located in Florida. The gathered data accumulated from weekly mailers consists of the following measurements: total gallons of hot water consumed; total kWh of electricity used; total hours the circulating pump operated; hot and cold water temperatures at the top; number of household members at home since last reading; tank thermostat setting and any changes to it; total number of hours that the tank's backup heating element had power available; and problems or comments concerning system operational status or component reliability and maintenance. The data analysis is described and results are presented. (MHR)

Jones, W.M.; Fenner, M.F.

1983-01-01T23:59:59.000Z

188

Continuous Commissioning of a Central Chilled Water & Hot Water System  

E-Print Network [OSTI]

A central chilled water / hot water system provides cooling / heating energy from central utility plants to multiple customers (buildings) through campus distribution loops. To effectively transport the chilled water and hot water to the buildings...

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

2000-01-01T23:59:59.000Z

189

Solar Hot Water Market Development in Knoxville, TN | Department...  

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

Information Resources Solar Hot Water Market Development in Knoxville, TN Solar Hot Water Market Development in Knoxville, TN Assessment of local solar hot water markets, market...

190

Solar Works in Seattle: Domestic Hot Water  

Broader source: Energy.gov [DOE]

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

191

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

SciTech Connect (OSTI)

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

None

1980-11-01T23:59:59.000Z

192

dist_hot_water.pdf  

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

District Hot Water Usage Form District Hot Water Usage Form 1999 Commercial Buildings Energy Consumption Survey (CBECS) 1. Timely submission of this report is mandatory under Public Law 93-275, as amended. 2. This completed questionnaire is due by 3. Data reported on this questionnaire are for the entire building identified in the label to the right. 4. Data may be submitted directly on this questionnaire or in any other format, such as a computer-generated listing, which provides the same i nformation and is conve nient for y our company. a. You may submit a single report for the entire building, or if it i s easier, a separate report for each of several accounts in the building. These will then be aggregated by the survey contractor. b. If you are concerned about your individual account information, you may c

193

New Infographic and Projects to Keep Your Energy Bills Out of Hot Water |  

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

Infographic and Projects to Keep Your Energy Bills Out of Hot Infographic and Projects to Keep Your Energy Bills Out of Hot Water New Infographic and Projects to Keep Your Energy Bills Out of Hot Water April 19, 2013 - 3:21pm Addthis New Energy Saver 101 infographic lays out the different types of water heaters on the market and will help you figure out how to select the best model for your home. Download a high-resolution version of the infographic. | Infographic by Sarah Gerrity. New Energy Saver 101 infographic lays out the different types of water heaters on the market and will help you figure out how to select the best model for your home. Download a high-resolution version of the infographic. | Infographic by Sarah Gerrity. Rebecca Matulka Rebecca Matulka Digital Communications Specialist, Office of Public Affairs

194

Regional Variation in Residential Heat Pump Water Heater Performance in the United States  

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

NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. Regional Variation in Residential Heat Pump Water Heater Performance in the US Jeff Maguire 4/30/13 Outline * Why HPWHs? * US Water Heating Market * Overview of HPWHs * Model Description * Results o HPWH Performance o Energy Savings Potential o Breakeven Cost 2 Heat Pump Water Heaters Save $300 a year over standard electric? Save $100 a year over standard gas? Heat Pump Electric Gas 3 Questions about HPWHs * Are HPWHs a good replacement for typical gas and electric storage water heaters? o In different locations across the country? o In conditioned/unconditioned space? o Source energy savings?

195

City-level energy and CO2 reduction effect by introducing new residential water heaters  

Science Journals Connector (OSTI)

Simulation models for a variety of new water heater systems were developed and the models were integrated into a city-level residential energy end-use model for Osaka City. Using the model, the potential of energy conservation and CO2 emission-reduction by introducing new residential water heaters was evaluated at the city-level. Optimal water-heating systems for each household category for primary energy reduction, CO2 emission-reduction, or cost reduction were identified by applying the end-use demand model. The effect of subsidies for installing more efficient systems and the influence of diffusion of these systems on electricity load curves were also discussed.

Yoshiyuki Shimoda; Tomo Okamura; Yohei Yamaguchi; Yukio Yamaguchi; Ayako Taniguchi; Takao Morikawa

2010-01-01T23:59:59.000Z

196

The Newest Addition to the ENERGY STAR Lineup: Water Heaters | Department  

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

The Newest Addition to the ENERGY STAR Lineup: Water Heaters The Newest Addition to the ENERGY STAR Lineup: Water Heaters The Newest Addition to the ENERGY STAR Lineup: Water Heaters February 17, 2009 - 9:48am Addthis Elizabeth Spencer Communicator, National Renewable Energy Laboratory If you've gone shopping for new appliances sometime in the last decade, then you're probably familiar with the ENERGY STAR® label. ENERGY STAR is a partnership between the U.S. Department of Energy and the U.S. Environmental Protection Agency that sets higher-than-average standards for household appliances, electronics, and commercial products. Products that meet these rigorous energy requirements can be designated as ENERGY STAR products. For the average consumer, it basically means that ENERGY STAR products are more energy efficient than their standard counterparts, and therefore will

197

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

E-Print Network [OSTI]

hot water distribution losses and waste heat recovery.Distribution losses are those heat losses that occur betweenDistribution losses Smart controls Wasted water Solar Heat

Lutz, Jim

2012-01-01T23:59:59.000Z

198

Sacramento Ordinance to Waive Fees for Solar Hot Water  

Broader source: Energy.gov [DOE]

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

199

Are we putting in hot water?  

E-Print Network [OSTI]

, and habitat loss will increase. And while slightly warmer water may not sound so bad to many of us, its effectAre we putting our fish in hot water? Global warming and the world's fisheries · Hot, hungry, and gasping for air · Shrinking fish and fewer babies? · Global warming puts fish on the run · Warm water

Combes, Stacey A.

200

Performance of Heat Pump Water Heaters: Initial Findings of Draw Profile Effect on HPWH Efficiency  

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

Performance of Heat Pump Water Heaters Performance of Heat Pump Water Heaters © 2011 Steven Winter Associates, Inc. All rights reserved. © 2011 Steven Winter Associates, Inc. All rights reserved. Evaluation Overview  2000-2002 Evaluated 20 installations with CL&P  Product had problems; not ready for prime time (average COPs of 1.67 was not the problem)  New batch of heaters available, including:  GE's GeoSpring Hybrid (50 gal)  A.O.Smith's Voltex Hybrid (60 & 80 gal)  Stiebel-Eltron's Accelera 300 (80 gal)  Evaluating 14 installations for National Grid, NSTAR, & Cape Light Compact. © 2011 Steven Winter Associates, Inc. All rights reserved. © 2011 Steven Winter Associates, Inc. All rights reserved.

Note: This page contains sample records for the topic "hot water heaters" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Solar Hot Water Resources and Technologies  

Broader source: Energy.gov [DOE]

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

202

Monitoring SERC Technologies Solar Hot Water  

Broader source: Energy.gov [DOE]

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

203

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

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

Recommendations for Applying Recommendations for Applying Water Heaters in Combination Space and Domestic Water Heating Systems A. Rudd, K. Ueno, D. Bergey, R. Osser Building Science Corporation June 2012 i This report received minimal editorial review at NREL. NOTICE This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, subcontractors, or affiliated partners makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark,

204

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

E-Print Network [OSTI]

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

Stein, J.

205

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

SciTech Connect (OSTI)

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

Not Available

2013-12-01T23:59:59.000Z

206

Heat Pump Swimming Pool Heaters | Department of Energy  

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

Swimming Pool Heaters Swimming Pool Heaters Heat Pump Swimming Pool Heaters May 29, 2012 - 1:49pm Addthis How a heat pump works. How a heat pump works. How They Work Heat pumps use electricity to capture heat and move it from one place to another. They don't generate heat. As the pool pump circulates the swimming pool's water, the water drawn from the pool passes through a filter and the heat pump heater. The heat pump heater has a fan that draws in the outside air and directs it over the evaporator coil. Liquid refrigerant within the evaporator coil absorbs the heat from the outside air and becomes a gas. The warm gas in the coil then passes through the compressor. The compressor increases the heat, creating a very hot gas that then passes through the condenser. The condenser transfers the heat from the hot gas to the cooler pool water circulating

207

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

Broader source: Energy.gov [DOE]

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

208

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

E-Print Network [OSTI]

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

Whitehouse, Kamin

209

Tips: Water Heating | Department of Energy  

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

Tips: Water Heating Tips: Water Heating Tips: Water Heating May 2, 2012 - 4:53pm Addthis Keep Your Energy Bills Out of Hot Water. Insulate your water heater to save energy and money, or choose an on-demand hot water heater to save even more. Keep Your Energy Bills Out of Hot Water. Insulate your water heater to save energy and money, or choose an on-demand hot water heater to save even more. Water heating is the second largest energy expense in your home. It typically accounts for about 18% of your utility bill. There are four ways to cut your water heating bills: use less hot water, turn down the thermostat on your water heater, insulate your water heater, or buy a new, more efficient model. Water Heating Tips Install aerating, low-flow faucets and showerheads. Repair leaky faucets promptly; a leaky faucet wastes gallons of

210

Tips: Water Heating | Department of Energy  

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

Water Heating Water Heating Tips: Water Heating May 2, 2012 - 4:53pm Addthis Keep Your Energy Bills Out of Hot Water. Insulate your water heater to save energy and money, or choose an on-demand hot water heater to save even more. Keep Your Energy Bills Out of Hot Water. Insulate your water heater to save energy and money, or choose an on-demand hot water heater to save even more. Water heating is the second largest energy expense in your home. It typically accounts for about 18% of your utility bill. There are four ways to cut your water heating bills: use less hot water, turn down the thermostat on your water heater, insulate your water heater, or buy a new, more efficient model. Water Heating Tips Install aerating, low-flow faucets and showerheads. Repair leaky faucets promptly; a leaky faucet wastes gallons of

211

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

Energy Savers [EERE]

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

212

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

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

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

213

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

SciTech Connect (OSTI)

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

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

2012-02-01T23:59:59.000Z

214

Refrigerant charge management in a heat pump water heater  

DOE Patents [OSTI]

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

Chen, Jie; Hampton, Justin W.

2014-06-24T23:59:59.000Z

215

Experimental study of a thermosyphon solar water heater coupled to a fibre-reinforced plastic (FRP) storage tank  

Science Journals Connector (OSTI)

The thermal performance of the thermosyphon solar water heater was analyzed to show its ... %. Also, an analysis of the temperature storage characteristics of a novel fibre-reinforced plastic (FRP) storage tank w...

P. N. Nwosu; O. U. Oparaku; W. I. Okonkwo; G. O. Unachukwu

2011-09-01T23:59:59.000Z

216

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

E-Print Network [OSTI]

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

Murray, PORTIA

2015-01-01T23:59:59.000Z

217

Analysis of water heater standby energy consumption from ELCAP homes  

Science Journals Connector (OSTI)

The Bonneville Power Administration (Bonneville) routinely prepares forecasts of future energy demands in the Pacific Northwest region of the United States. Bonneville also implements conservation programs to reduce load demands. Results from the End-Use Load and Consumer Assessment Program (ELCAP), undertaken by the Pacific Northwest Laboratory for Bonneville, indicated that single-family homes with electric space-heating equipment consume more than 4700 kWh/yr to heat water for domestic uses. This energy use amounts to about 23% of the total electricity consumed. Additionally, the peak consumption for water heating coincides with regional system peak demands. Detailed analyses of the water heating end-use data acquired for residential buildings in ELCAP reveal that the average standby load for existing homes is 1200 kWh/yr, while homes built as part of the Residential Standards Demonstration Program averaged 1100 kWh/yr. These figures are consistent with the current figure of 1300 kWh/yr that is being used in the regional energy forecast. We also determined that standby loads for some of the participants were behaviorally driven. The data indicated the occurrence of vacancy setbacks in which the participant appears to lower the thermostat to save energy while the house is vacant. Anecdotal evidence from interviews revealed that this does occur. Reasons for setting back the thermostat ranged from not thinking about using the breaker, to fear that the tank would freeze in cold weather. These types of activities also appear to create the occurrence of dueling thermostats where the upper and lower thermostats, after the vacancy period, are not returned to the same temperature. This leads to additional energy use in an attempt to maintain a uniform temperature in the tank.

R.G. Pratt; B.A. Ross; W.F. Sandusky

1993-01-01T23:59:59.000Z

218

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

E-Print Network [OSTI]

stayed constant. Total Energy Use Global Warming Potential1. Total Energy Use: Northern California Global Warming2. Total Energy Use: Southern California Global Warming

Lu, Alison

2011-01-01T23:59:59.000Z

219

Building America Expert Meeting: Recommendations for Applying Water Heaters in Combination Space and Domestic Water Heating Systems  

Broader source: Energy.gov [DOE]

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

220

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

Broader source: Energy.gov [DOE]

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

Note: This page contains sample records for the topic "hot water heaters" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

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

Broader source: Energy.gov [DOE]

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

222

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

SciTech Connect (OSTI)

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

Not Available

1981-12-16T23:59:59.000Z

223

University of Colorado Hot Water Report  

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

Hot water system Brief Contest Report Hot water system Brief Contest Report Recognizing that the sun is an abundant source of clean energy that reaches the earth at an intensity of up to 1000 Watts/m 2 , the University of Colorado will be showcasing top-of-the-line technology in which solar radiation is converted into heat for the purposes of heating the home and providing domestic hot water. Solar Thermal System - Basics Colorado's 2005 Solar Decathlon team has chosen to harness the sun's thermal energy with 4 arrays of 20 Mazdon evacuated tube collectors manufactured by Thermomax, as shown in Figure 1 below. These collectors have incredibly high efficiencies - about 60% over the course of an entire day. In addition, the evacuated tube collectors resist internal condensation and corrosion more effectively than their counterparts

224

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

SciTech Connect (OSTI)

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

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

2014-07-21T23:59:59.000Z

225

Hot Water Heating System Operation and Energy Conservation  

E-Print Network [OSTI]

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

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

2006-01-01T23:59:59.000Z

226

Microsoft Word - ASHRAE_Water Heater Paper_2010-11-24_Final_LBNL_.docx  

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

Energy Efficiency Design Options for Residential Water Heaters: Economic Impacts on Consumers Presented at: 2011 ASHRAE Winter Conference, Las Vegas, Nevada January 2011 Alex B. Lekov, Victor H. Franco, Steve Meyers, Lisa Thompson, and Virginie Letschert Lawrence Berkeley National Laboratory Environmental Energy Technologies Division One Cyclotron Road Berkeley, CA 94720 This work was supported by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Building Technology, State, and Community Programs, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. ERNEST ORLANDO LAWRENCE BERKELEY NATIONAL LABORATORY 2 Disclaimer This document was prepared as an account of work sponsored by the United States

227

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

Broader source: Energy.gov [DOE]

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

228

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

SciTech Connect (OSTI)

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

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

2014-09-05T23:59:59.000Z

229

Water Heating | Department of Energy  

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

Water Heating Water Heating Water Heating Infographic: Water Heaters 101 Everything you need to know about saving money on water heating costs Read more 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 When buying a new water heater, bigger is not always better. Learn how to buy the right size of water heater. Read more You can reduce your monthly water heating bills by selecting the appropriate water heater for your home or pool and by using some energy-efficient water heating strategies. Some simple do-it-yourself projects, like insulating hot water pipes and lowering your water heating temperature, can also help you save money and energy on your water heating.

230

Solar Hot Water Resources and Technologies | Department of Energy  

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

Solar Hot Water Resources and Technologies Solar Hot Water Resources and Technologies Solar Hot Water Resources and Technologies October 7, 2013 - 11:49am Addthis Photo of a standalone solar hot water system standing in front of a clothesline with a backdrop of evergreen trees. This solar hot water system tracks sunlight using a standalone, single-axis mount to optimize hot water production for residential applications. This page provides a brief overview of solar hot water (SHW) technologies supplemented by specific information to apply SHW within the Federal sector. Overview Although a large variety of solar hot water systems exist, the basic technology is simple. A collector absorbs and transfers heat from the sun to water, which is stored in a tank until needed. Active solar heating systems use circulating pumps and controls. These are more expensive but

231

Federal Energy Management Program: Solar Hot Water Resources and  

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

Solar Hot Water Solar Hot Water Resources and Technologies to someone by E-mail Share Federal Energy Management Program: Solar Hot Water Resources and Technologies on Facebook Tweet about Federal Energy Management Program: Solar Hot Water Resources and Technologies on Twitter Bookmark Federal Energy Management Program: Solar Hot Water Resources and Technologies on Google Bookmark Federal Energy Management Program: Solar Hot Water Resources and Technologies on Delicious Rank Federal Energy Management Program: Solar Hot Water Resources and Technologies on Digg Find More places to share Federal Energy Management Program: Solar Hot Water Resources and Technologies on AddThis.com... Energy-Efficient Products Technology Deployment Renewable Energy Federal Requirements Renewable Resources & Technologies

232

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

Energy Savers [EERE]

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

233

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

Energy Savers [EERE]

DOE ZERH Webinar: Efficient Hot Water Distribution II: How to Get it Right DOE ZERH Webinar: Efficient Hot Water Distribution II: How to Get it Right Watch the video or view the...

234

An Energy Policy Perspective on Solar Hot Water Equipment Mandates  

E-Print Network [OSTI]

An Energy Policy Perspective on Solar Hot Water Equipmentlast dol- ENERGY POLICY lar spent on solar equipment gaveENERGY POLICY tween a new house with solar hot water

Williams, Stephen F.

1981-01-01T23:59:59.000Z

235

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

SciTech Connect (OSTI)

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

Rapp, VH; Singer, BC

2014-03-01T23:59:59.000Z

236

Evaluating Domestic Hot Water Distribution System Options With Validated Analysis Models  

SciTech Connect (OSTI)

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

Weitzel, E.; Hoeschele, M.

2014-09-01T23:59:59.000Z

237

Hot-water power from the earth  

SciTech Connect (OSTI)

This article examines geothermal sites on the West Coast in order to show the progress that has been made in converting geothermal energy into usable electric power. Only about 0.5% of the earth's geothermal reserve can be brought to the surface as dry steam. California's Imperial Valley is possibly the largest geothermal resource in the US. Three demonstration generating plants are each producing between 10 and 14 MW of power near the valley's Salton Sea. The high-temperature water (above 410/sup 0/F) at Brawley is drawn from wells tapping the subterranean reservoir. It is proposed that hot-water power will be economical when methods are found to extract maximum energy from a geothermal deposit and to control clogging and corrosion caused by minerals dissolved in the hot fluid.

Not Available

1984-02-01T23:59:59.000Z

238

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

SciTech Connect (OSTI)

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

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

1981-01-01T23:59:59.000Z

239

Solar heating and domestic hot water system installed at Kansas City, Fire Station, Kansas City, Missouri. Final report  

SciTech Connect (OSTI)

This document is the final report of the solar energy heating and hot water system installed at the Kansas City Fire Station, Number 24, 2309 Hardesty Street, Kansas City, Missouri. The solar system was designed to provide 47 percent of the space heating, 8800 square feet area and 75 percent of the domestic hot water (DHW) load. The solar system consists of 2808 square feet of Solaron, model 2001, air, flat plate collector subsystem, a concrete box storage subsystem which contains 1428 cubic feet of 1/2 inch diameter pebbles weighing 71 1/2 tons, a DHW preheat tank, blowers, pumps, heat exchangers, air ducting, controls and associated plumbing. Two 120-gallon electric DHW heaters supply domestic hot water which is preheated by the solar system. Auxiliary space heating is provided by three electric heat pumps with electric resistance heaters and four 30-kilowatt electric unit heaters. There are six modes of system operation. This project is part of the Department of Energy PON-1 Solar Demonstration Program with DOE cost sharing $154,282 of the $174,372 solar system cost. The Final Design Review was held March 1977, the system became operational March 1979 and acceptance test was completed in September 1979.

None

1980-07-01T23:59:59.000Z

240

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

Broader source: Energy.gov [DOE]

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

Note: This page contains sample records for the topic "hot water heaters" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Study on the LWT control schemes of a heat pump for hot water supply  

Science Journals Connector (OSTI)

Heat pump systems have been widely used in buildings and industries due to their high performance. In this study, a leaving water temperature control scheme has been proposed for a water-to-water heat pump for hot water supply. The study was focused on the following four schemes: (1) using an auxiliary electric heater, (2) varying compressor speed, (3) adjusting water flow rate, and (4) adding heat to the secondary fluid flow of the heat source. With schemes (2) and (3), the system showed higher performance than other schemes. However, scheme (2) could not attain the appropriate LWT at low EWT heat source conditions. For all EWT conditions, using schemes (3) and (4) enabled the system to reach an appropriate LWT. Scheme (4) can be adopted as the best technology to control LWT, because it is not easy to vary flow rate of the secondary fluid as in scheme (3).

Jong Min Choi

2013-01-01T23:59:59.000Z

242

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

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

Insulate Hot Water Pipes for Energy Savings Insulate Hot Water Pipes for Energy Savings Savings Project: Insulate Hot Water Pipes for Energy Savings Addthis Project Level Medium Energy Savings $8-$12 annually Time to Complete 3 hours for a small house Overall Cost $10-$15 Insulating water pipes can save you water, energy, and money. | Photo courtesy of iStockphoto.com/nsj-images Insulating water pipes can save you water, energy, and money. | Photo courtesy of iStockphoto.com/nsj-images Insulating your hot water pipes reduces heat loss and can raise water temperature 2°F-4°F hotter than uninsulated pipes can deliver, allowing for a lower water temperature setting. You also won't have to wait as long for hot water when you turn on a faucet or showerhead, which helps conserve water. Paying for someone to insulate your pipes-as a project on its own-may

243

Short term performance comparisons between a solar thermosyphon water heater and two numerical models  

SciTech Connect (OSTI)

An experimental study of a solar thermosyphon domestic water heater was conducted in the indoor solar simulator facility at Colorado State University (Bickford, 1994). The system consisted of a closed-loop collector circuit filled with propylene glycol and water solution and a horizontal storage tank with an annular tank-in-tank heat exchanger. Short-term irradiated tests with and without timed draws were performed to assess overall performance and monitor collector flow rate, storage tank stratification, and heat exchanger temperature distribution. The measured performance was compared with the ``standard`` thermosyphon model in TRNSYS 13.1 (transient system simulation program). A revised TRNSYS model was developed by Graham Morrison at the University of New South Wales, Australia. The revised model specifically addressed the horizontal tank, closed-loop configuration. The standard TRNSYS version predicted solar gain within 17% of the measured values and differed dramatically from experimental collector temperatures, closed-loop flow rate, and tank stratification. This is not surprising since this model does not include the tank and tank heat exchanger. The revised TRNSYS model agreed more closely with experimental results. It predicted closed-loop flow at 8% lower than observed flow and collector temperature rise that was higher than the observed flow by approximately the same amount, resulting in extremely accurate prediction of collector output energy. Losses from the storage tank and piping were significantly underpredicted in both models, however.

Bickford, C.; Hittle, D.C. [Colorado State Univ., Fort Collins, CO (United States). Solar Energy Applications Lab.

1995-11-01T23:59:59.000Z

244

NREL Develops Heat Pump Water Heater Simulation Model (Fact Sheet), NREL Highlights, Research & Development, NREL (National Renewable Energy Laboratory)  

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

simulation model helps researchers evaluate real-world simulation model helps researchers evaluate real-world impacts of heat pump water heaters in U.S. homes. Heat pump water heaters (HPWHs) remove heat from the air and use it to heat water, presenting an energy-saving opportunity for homeowners. Researchers at the National Renewable Energy Laboratory (NREL) developed a simulation model to study the inter- actions of HPWHs and space conditioning equipment, related to climate and installa- tion location in the home. This model was created in TRNSYS and is based on data from HPWHs tested at NREL's Advanced HVAC Systems Laboratory. The HPWH model accounts for the condenser coil wrapped around the outside of the storage tank, and uses a data-based performance map. Researchers found that simulated energy use was within 2% of lab results, which confirms

245

Webinar: ENERGY STAR Hot Water Systems for High Performance Homes  

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

Star Hot Water Systems for High Performance Homes Star Hot Water Systems for High Performance Homes 1 | Building America Program www.buildingamerica.gov Buildings Technologies Program Date: September 30, 2011 ENERGY STAR ® Hot Water Systems for High Performance Homes Welcome to the Webinar! We will start at 11:00 AM Eastern. There is no call in number. The audio will be sent through your computer speakers. All questions will be submitted via typing. Video of presenters Energy Star Hot Water Systems for High Performance Homes 2 | Building America Program www.buildingamerica.gov Energy Star Hot Water Systems for High Performance Homes 3 | Building America Program www.buildingamerica.gov Building America Program: Introduction Building Technologies Program Energy Star Hot Water Systems for High Performance Homes

246

Design package for solar domestic hot water system  

SciTech Connect (OSTI)

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

None

1980-09-01T23:59:59.000Z

247

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

Office of Environmental Management (EM)

I: What's at Stake Watch the video or view the presentation below Zero Energy Ready Homes include critical systems to ensure both energy efficiency and performance. Hot water...

248

Mandating Solar Hot Water by California Local Governments: Legal Issues  

E-Print Network [OSTI]

the legality of solar mandates in California cities andCITIES & CALIFORNIA ENERGY COMMISSION, SOLAR HANDBOOK FORMandating Solar Hot Water By California Local Governments:

Hoffman,, Peter C.

1981-01-01T23:59:59.000Z

249

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

SciTech Connect (OSTI)

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

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

1980-05-01T23:59:59.000Z

250

Superheated water drops in hot oil  

E-Print Network [OSTI]

Drops of water at room temperature were released in hot oil, which had a temperature higher than that of the boiling point of water. Initially, the drop temperature increases slowly mainly due to heat transfer diffusion; convective heat transfer is small because the motion takes place at a small Reynolds number. Once the drop reaches the bottom of the container, it sticks to the surface with a certain contact angle. Then, a part of the drop vaporizes: the nucleation point may appear at the wall, the interface or the bulk of the drop. The vapor expands inside the drop and deforms its interface. The way in which the vapor expands, either smooth or violent, depends on the location of the nucleation point and oil temperature. Furthermore, for temperatures close to the boiling point of water, the drops are stable (overheated); the vaporization does not occur spontaneously but it may be triggered with an external perturbation. In this case the growth of the vapor bubble is rather violent. Many visualization for dif...

Soto, Enrique; Belmonte, Andrew

2009-01-01T23:59:59.000Z

251

Building America Technology Solutions for New and Existing Homes: Field Performance of Heat Pump Water Heaters in the Northeast (Fact Sheet)  

Broader source: Energy.gov [DOE]

In this project, the Consortium for Advanced Residential Buildings evaluated three newly released heat pump water heater products in order to provide publicly available field data on these products.

252

Learning from Interventions Aimed at Mainstreaming Solar Hot Water in the Australian Market  

Science Journals Connector (OSTI)

Domestic water heating in Australia conventionally uses electric resistance heating storage or gas fuelled water heaters. The Australian electricity supply has some of the highest greenhouse gas emissions factors in the world. Consequently, water heating is responsible for approximately 24 percent of residential sector greenhouse gas emissions in Australia. To assist households to move towards an energy efficient, low carbon future, a suite of market intervention programs to support solar hot water uptake have been introduced at both state and federal levels. These programs aim to improve the capacity of industry to deliver solar solutions, reduce the emissions intensity and net cost of household water heating, and increase the market share of the solar water heating sector. Incentives include: Point of sale rebates and certificate-based programs for energy efficiency and renewable energy; Regulations for new houses that encourage solar water heating installations; Community awareness programs; and Training programs for installers to ensure that tradespeople have the competencies to size systems and the skills to install them correctly. In some jurisdictions the incentive programs were performance-based, but in others a fixed rebate amount was available for all systems having performance above a minimum threshold. These programs have lead to the widespread expansion of the industry, with an almost doubling of the proportion of households with solar water heaters between 1999 and 2011. Installations in new homes have seen an even more marked increase: For example, regulations for new homes in the state of Victoria require the installation of a solar water heater or rainwater tank. This program has seen the adoption of solar water heaters in new homes increase fro m around 5% in 2004 to over 70% in 2011. Across most of Australia there are proposed regulations limiting the emissions intensity of replacement water heaters which will effectively ban resistance electric water heaters in most situations. Recently both South Australia and Queensland commenced their program for existing houses. It is expected that in the future these programs will drive an even greater uptake, which will go some way to insulating Australian households from price increases that may result from carbon driven future increases in the cost of energy. This paper discusses the various approaches and outcomes of the different programs and provides analysis of the basis of program success or improvements. Learning relevant to market interventions worldwide include Continuity in program operation is necessary to allow industry to grow in a sustainable way. Basing the incentive on independently derived performance results provides industry with a means of differentiating better products and provides purchasers with appropriate guidance. Rebate program design should consider the consumer's purchasing priorities. For example, a point of sale discount awarded as part of the purchase transaction aligns with the urgency of the purchasing process and does not require additional cash to be available from the purchaser. Design of the schemes can not only produce a greater market share, but can also encourage the manufacture of lower greenhouse gas emissions products. Market interventions can have unintended consequences, so the programs need to be monitored and flexibility maintained to changes to avoid poor outcomes.

David Ferrari; Ken Guthrie; Sonja Ott; Robert Thomson

2012-01-01T23:59:59.000Z

253

Reduce Hot Water Use for Energy Savings | Department of Energy  

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

Reduce Hot Water Use for Energy Savings Reduce Hot Water Use for Energy Savings Reduce Hot Water Use for Energy Savings June 15, 2012 - 5:51pm Addthis Low-flow fixtures and showerheads can achieve water savings of 25%–60%. | Photo courtesy of ©iStockphoto/DaveBolton. Low-flow fixtures and showerheads can achieve water savings of 25%-60%. | Photo courtesy of ©iStockphoto/DaveBolton. What does this mean for me? Fix leaks, install low-flow fixtures, and purchase an energy-efficient dishwasher and clothes washer to use less hot water and save money. You can lower your water heating costs by using and wasting less hot water in your home. To conserve hot water, you can fix leaks, install low-flow fixtures, and purchase an energy-efficient dishwasher and clothes washer. Fix Leaks You can significantly reduce hot water use by simply repairing leaks in

254

Solar Hot Water Creates Savings for Homeless Shelters | Department of  

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

Solar Hot Water Creates Savings for Homeless Shelters Solar Hot Water Creates Savings for Homeless Shelters Solar Hot Water Creates Savings for Homeless Shelters July 15, 2010 - 12:10pm Addthis Kevin Craft What are the key facts? Recovery Act funds are being used to install solar hot water systems at 5 Phoenix shelters. The systems will save Phoenox 33,452 kWh of energy -- about $4,000 -- annually. The systems will reduce about 40,000 pounds of carbon emissions annually. "This project will save us a huge amount of money," says Paul Williams, House of Refuge Sunnyslope's Executive Director. Williams is referring to a recent partnership between the state of Arizona and House of Refuge Sunnyslope to install solar hot water systems at five Phoenix-area housing sites for homeless men, which will make an immediate difference at the

255

Estimating Costs and Efficiency of Storage, Demand, and Heat Pump Water  

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

Estimating Costs and Efficiency of Storage, Demand, and Heat Pump Estimating Costs and Efficiency of Storage, Demand, and Heat Pump Water Heaters Estimating Costs and Efficiency of Storage, Demand, and Heat Pump Water Heaters June 14, 2012 - 7:38pm Addthis A water heater's energy efficiency is determined by the energy factor (EF), which is based on the amount of hot water produced per unit of fuel consumed over a typical day. The higher the energy factor, the more efficient the water heater. A water heater's energy efficiency is determined by the energy factor (EF), which is based on the amount of hot water produced per unit of fuel consumed over a typical day. The higher the energy factor, the more efficient the water heater. What does this mean for me? Estimate the annual operating costs and compare several water heaters to determine whether it is worth investing in a more efficient

256

Solar Hot Water Contractor Licensing | Department of Energy  

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

Hot Water Contractor Licensing Hot Water Contractor Licensing Solar Hot Water Contractor Licensing < Back Eligibility Installer/Contractor Savings Category Heating & Cooling Solar Water Heating Program Info State Arkansas Program Type Solar/Wind Contractor Licensing Arkansas offers several limited, specialty licenses for solar thermal installers under the general plumbing license. There are three specialty classifications available for solar thermal installers: a Restricted Solar Mechanic license, a Supervising Solar Mechanic license, and a Solar Mechanic Trainee classification. Installers with a Restricted Solar Mechanic license can install and maintain systems used to heat domestic hot water, but are not allowed to perform any other plumbing work. Individuals holding a Supervising Solar Mechanic license are able to supervise, install

257

2014-10-14 Issuance: Test Procedures and Energy Conservation Standards for Residential Solar Water Heaters; Request for Information  

Broader source: Energy.gov [DOE]

This document is a pre-publication Federal Register request for information regarding test procedures and energy conservation standards for residential solar water heaters, as issued by the Deputy Assistant Secretary for Energy Efficiency on October 14, 2014. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

258

DOE Publishes Notice of Proposed Rulemaking for Residential Water...  

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

Water Heater and Certain Commercial Water Heater Test Procedures DOE Publishes Notice of Proposed Rulemaking for Residential Water Heater and Certain Commercial Water Heater Test...

259

DOE Solar Decathlon: News Blog » Hot Water  

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

Hot Water Hot Water Below you will find Solar Decathlon news from the Hot Water archive, sorted by date. New Contest Data Displays Provide Insight into Competition Scoring Saturday, October 5, 2013 By Solar Decathlon New contest data displays are now available on the U.S. Department of Energy Solar Decathlon website. If you are interested in the real-time performance of each house and want to keep a close eye on the competition, check out the Contests section pages. In the Contests section, the pages for the measured contests (Comfort Zone, Hot Water, Appliances, Home Entertainment, and Energy Balance) explain the contest requirements and provide real-time graphical displays of the accumulated measurements/scores for each team. Roll your cursor over the graphics to see more detailed information about each contest. For example,

260

ENERGY USE AND DOMESTIC HOT WATER CONSUMPTION Final Report  

Office of Scientific and Technical Information (OSTI)

DOMESTIC HOT WATER CONSUMPTION Final Report Phase 1 Prepared for THE N E W YORK STATE ENERGY RESEARCH AND DEVELOPMENT AUTHORITY Project Manager Norine H. Karins Prepared by ENERGY...

Note: This page contains sample records for the topic "hot water heaters" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Hot water geothermal development: opportunities and pilot plant results  

SciTech Connect (OSTI)

It has been projected that up to 11,000 MW of geothermal electric capacity may be on line in the United States by the year 2000. The majority of this capacity will come from hot water geothermal plants, as dry steam resources are limited. Currently, no commercial hot water geothermal capacity exists in the U.S., although, substantial capacity does exist in other countries. Large hot, high temperature resources exist in Southern California's Imperial Valley. Early research work has led to the technical success of a 10 MW unit at Brawley, and to the construction of second generation pilot unit at the Salton Sea resource.

Crane, G.K.

1982-08-01T23:59:59.000Z

262

Auto-Calibration and Control Strategy Determination for a Variable-Speed Heat Pump Water Heater Using Optimization  

SciTech Connect (OSTI)

This paper introduces applications of the GenOpt optimizer coupled with a vapor compression system model for auto-calibration and control strategy determination towards the development of a variable-speed ground-source heat pump water heating unit. The GenOpt optimizer can be linked with any simulation program using input and output text files. It effectively facilitates optimization runs. Using our GenOpt wrapper program, we can flexibly define objectives for optimizations, targets, and constraints. Those functionalities enable running extensive optimization cases for model calibration, configuration design and control strategy determination. In addition, we describe a methodology to improve prediction accuracy using functional calibration curves. Using the calibrated model, we investigated control strategies of the ground-source heat pump water heater, considering multiple control objectives, covering the entire operation range.

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

2012-01-01T23:59:59.000Z

263

Commonwealth Solar Hot Water Residential Program | Department of Energy  

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

Commonwealth Solar Hot Water Residential Program Commonwealth Solar Hot Water Residential Program Commonwealth Solar Hot Water Residential Program < Back Eligibility Multi-Family Residential Residential Savings Category Heating & Cooling Commercial Heating & Cooling Solar Heating Water Heating Maximum Rebate $3,500 per building or 25% of total installed costs Program Info Funding Source Massachusetts Renewable Energy Trust Fund Start Date 02/07/2011 Expiration Date 12/31/2016 State Massachusetts Program Type State Rebate Program Rebate Amount Base rate: $45 X SRCC rating in thousands btu/panel/day (Category D, Mildly Cloudy Day) Additional $200/system for systems with parts manufactured in Massachusetts Additional $1,500/system for metering installation Adder for natural disaster relief of twice the base rebate.

264

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

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

NV Energy (Northern Nevada) - Solar Hot Water Incentive Program NV Energy (Northern Nevada) - Solar Hot Water Incentive Program NV Energy (Northern Nevada) - Solar Hot Water Incentive Program < Back Eligibility Commercial Fed. Government Local Government Nonprofit Residential Schools State Government Savings Category Heating & Cooling Solar Water Heating Maximum Rebate Residential electric customers: Lesser of 50% or $2,000 Residential gas customers: Lesser of 30% or $3,000 Small commercial gas customers: Lesser of 30% or $7,500 Nonprofits, schools and other public gas customers: Lesser of 50% or $30,000 Program Info Start Date 2/1/2011 State Nevada Program Type Utility Rebate Program Rebate Amount Residential electric customers: Lesser of 50% or $2,000 Residential gas customers: $14.50 per therm Small commercial gas customers: $14.50 per therm

265

Solar Hot Water Contractor Licensing | Department of Energy  

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

Solar Hot Water Contractor Licensing Solar Hot Water Contractor Licensing Solar Hot Water Contractor Licensing < Back Eligibility Installer/Contractor Savings Category Heating & Cooling Solar Water Heating Program Info State Maine Program Type Solar/Wind Contractor Licensing In order to be eligible for Maine's solar thermal rebate program, systems must be installed by licensed plumbers who have received additional certification for solar thermal systems from the North American Board of Certified Energy Practitioners (NABCEP). The state solar thermal rebate program maintains a list of Efficiency Maine registered vendors/installers. In addition, Efficiency Maine has information for vendors interested in becoming registered and listed on the [http://www.efficiencymaine.com/at-home/registered-vendor-locator web

266

Commonwealth Solar Hot Water Commercial Program | Department of Energy  

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

Commonwealth Solar Hot Water Commercial Program Commonwealth Solar Hot Water Commercial Program Commonwealth Solar Hot Water Commercial Program < Back Eligibility Agricultural Commercial Fed. Government Industrial Local Government Multi-Family Residential Nonprofit Schools State Government Tribal Government Savings Category Heating & Cooling Solar Water Heating Maximum Rebate Feasibility study: $5,000; Construction: 25% system costs or $50,000 Program Info Funding Source Massachusetts Renewable Energy Trust Fund Start Date 08/04/2011 State Massachusetts Program Type State Rebate Program Rebate Amount Feasibility study: $5,000; Construction grants: $45*number of collectors*SRCC Rating (Private); $55*number of collectors*SRCC Rating (Public/Non-Profit) Massachusetts Manufactured adder: $200-$500 Metering adder: Up to $1,500

267

Evaporative system for water and beverage refrigeration in hot countries  

E-Print Network [OSTI]

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

268

DOE Solar Decathlon: News Blog » Hot Water  

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

'Hot Water' 'Hot Water' New Contest Data Displays Provide Insight into Competition Scoring Saturday, October 5, 2013 By Solar Decathlon New contest data displays are now available on the U.S. Department of Energy Solar Decathlon website. If you are interested in the real-time performance of each house and want to keep a close eye on the competition, check out the Contests section pages. In the Contests section, the pages for the measured contests (Comfort Zone, Hot Water, Appliances, Home Entertainment, and Energy Balance) explain the contest requirements and provide real-time graphical displays of the accumulated measurements/scores for each team. Roll your cursor over the graphics to see more detailed information about each contest. For example, in the Appliances Contest graphic, the scores for running the refrigerator,

269

Solar-assisted auto-cascade heat pump cycle with zeotropic mixture R32/R290 for small water heaters  

Science Journals Connector (OSTI)

Abstract In this study, a novel solar-assisted auto-cascade heat pump cycle (SAHPC) operating with the zeotropic mixture of R32/R290 for small water heaters is proposed. In the SAHPC system, a cascade heat exchanger (CHEX) associated with a phase separator is used to achieve auto cascade cycle and enhance the overall system performance. The performances of the SAHPC are evaluated by using the developed mathematical model, and then compared with the conventional air-sourced heat pump cycle (CAHPC). Simulation results show the SAHPC has 4.239.85% and 4.379.68% improvements in COP and volumetric heating capacity compared with those of the CAHPC, respectively, under the same operating conditions. However, the improvement of performance of this novel cycle largely depends on the absorbing heat ratio and the zeotropic composition. It is expected that this new cycle will be beneficial to developing dual-source coupled heat pump applications.

Xiaolong Lv; Gang Yan; Jianlin Yu

2015-01-01T23:59:59.000Z

270

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

SciTech Connect (OSTI)

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

McPherson, G D; Tolman, E L

1980-01-01T23:59:59.000Z

271

Lessons and Measures Learned from Continuous Commissioning(SM) of Central Chilled/Hot Water Systems  

E-Print Network [OSTI]

water and hot water system operation. It can be performed before, during, or after building side continuous commissioning. Successful central chilled/hot water system CC not only results in improved production and distribution, but also achieves...

Deng, S.; Turner, W. D.; Claridge, D. E.; Bruner, H.; Chen, H.; Wei, G.

2001-01-01T23:59:59.000Z

272

Convective heater  

DOE Patents [OSTI]

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

Thorogood, Robert M. (Macungie, PA)

1983-01-01T23:59:59.000Z

273

Convective heater  

DOE Patents [OSTI]

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

Thorogood, Robert M. (Macungie, PA)

1986-01-01T23:59:59.000Z

274

Solar Swimming Pool Heaters | Department of Energy  

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

Swimming Pool Heaters Swimming Pool Heaters Solar Swimming Pool Heaters May 29, 2012 - 6:03pm Addthis An example of a solar pool heater. An example of a solar pool heater. You can significantly reduce swimming pool heating costs by installing a solar pool heater. They're cost competitive with both gas and heat pump pool heaters, and they have very low annual operating costs. Actually, solar pool heating is the most cost-effective use of solar energy in many climates. How They Work Most solar pool heating systems include the following: A solar collector -- the device through which pool water is circulated to be heated by the sun A filter -- removes debris before water is pumped through the collector A pump -- circulates water through the filter and collector and back to the pool A flow control valve -- automatic or manual device that diverts pool

275

Solar Swimming Pool Heaters | Department of Energy  

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

Solar Swimming Pool Heaters Solar Swimming Pool Heaters Solar Swimming Pool Heaters May 29, 2012 - 6:03pm Addthis An example of a solar pool heater. An example of a solar pool heater. You can significantly reduce swimming pool heating costs by installing a solar pool heater. They're cost competitive with both gas and heat pump pool heaters, and they have very low annual operating costs. Actually, solar pool heating is the most cost-effective use of solar energy in many climates. How They Work Most solar pool heating systems include the following: A solar collector -- the device through which pool water is circulated to be heated by the sun A filter -- removes debris before water is pumped through the collector A pump -- circulates water through the filter and collector and back to the pool

276

Building America Webinar: Central Multifamily Water Heating Systems  

Broader source: Energy.gov [DOE]

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

277

Save on Home Water Heating | Department of Energy  

Office of Environmental Management (EM)

and money, or choose an on-demand hot water heater to save even more. Tips: Water Heating Solar energy systems are among the renewable and efficiency purchases that are...

278

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

E-Print Network [OSTI]

air source to be added Discharge Includes: Source energy multiplier Distribution losses Smart controls Wasted water Solar Heat pump

Lutz, Jim

2012-01-01T23:59:59.000Z

279

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

Broader source: Energy.gov [DOE]

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

280

DOE Zero Energy Ready Home Efficient Hot Water Distribution I-- What's At Stake Webinar (Text Version)  

Broader source: Energy.gov [DOE]

Below is the text version of the webinar, Efficient Hot Water Distribution I -- What's At Stake, presented in January 2014.

Note: This page contains sample records for the topic "hot water heaters" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Water Heating: Energy-efficient strategies for supplying hot water in the home (BTS Technology Fact Sheet)  

SciTech Connect (OSTI)

Fact sheet for homeowners and contractors on how to supply hot water in the home while saving energy.

NAHB Research Center; Southface Energy Institute; U.S. Department of Energy's Oak Ridge Laboratory; U.S. Department of Energy's National Renewable Energy Laboratory

2001-08-15T23:59:59.000Z

282

Overheating in Hot Water- and Steam-Heated Multifamily Buildings  

SciTech Connect (OSTI)

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

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

2013-10-01T23:59:59.000Z

283

Engineering computer models for refrigerators, freezers, furnaces, water heaters, room and central air conditioners  

SciTech Connect (OSTI)

This User's Guide provides the necessary information for understanding and using a computer model developed for the US Department of Energy which predicts the performance (energy consumption) of household refrigerators, refrigerator-freezers, and freezers. The model is capable of simulating various cabinet configurations (top-mount, bottom-mount, side-by-side, single-door) and refrigeration unit combinations (back-mounted static condenser with single forced convection evaporator, hot wall condenser with cooled wall panels, etc.). The program is comprised of two main subroutines: a cabinet heat-load submodel and a refrigeration unit submodel; they can be used separately for preliminary design analysis or together for performance evaluations. A technical description of the model and information on how to structure input parameters are provided. The user is provided with specific guidance for running the model on a computer. Specific instructions are given in the Appendices for changing and running the model using the operating language compatible with the DOE computer terminal system. Other users will have to modify the procedures in these sections as necessary for different computers.

Not Available

1982-11-01T23:59:59.000Z

284

Efficiency of a parabolic trough collector as a water heater system in Yucatn, Mexico  

Science Journals Connector (OSTI)

The performance of a parabolic trough collector (PTC) manufactured in Merida Yucatn was evaluated under the ANSI/ASHRAE 93-1986 standard. The water heating system for testing with a constant flow limited to a maximum temperature of 55 C was built; thus the tests were at low temperatures. Using water as working fluid it was found that the maximum efficiency of the collector was 5.43% with a flow rate of 0.022?kg/s at a direct solar irradiance with incidence angle 0. The evaluation methodology and design of the system for testing the collector is reported in this paper.

N. Rosado Hau; M. A. Escalante Soberanis

2011-01-01T23:59:59.000Z

285

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

Broader source: Energy.gov [DOE]

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

286

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

Broader source: Energy.gov [DOE]

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

287

ELECTRICAL HEATERS FOR THERMO-MECHANICAL TESTS AT THE STRIPA MINE  

E-Print Network [OSTI]

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

Burleigh, R.H.

2010-01-01T23:59:59.000Z

288

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

E-Print Network [OSTI]

speed motor that modulates the blower speed, this watermotor amps Energy Efficiency versus gas input for both waterWater flow versus gas input At this site we also compared gas consumption to blower motor

Lutz, Jim

2008-01-01T23:59:59.000Z

289

SYSTEM OPTIMIZTION OF HOT WATER CONCENTRATED SOLAR THERMOELECTRIC GENERATION  

E-Print Network [OSTI]

In this report, we describe the design of a concentrated solar thermoelectric (TE) system which can provide both electricity and hot water. Todays thermoelectric materials have a relatively low efficiency (~6 % for temperature difference across the thermoelement on the order of 300 o C). However since thermoelectrics dont need their cold side to be near room temperature, (in another word, one can chose the particular thermoelectric material to match to the operational temperature) it is possible to use the waste heat to provide hot water and this makes the overall efficiency of the combined system to be quite high. A key factor in the optimization of the thermoelectric module is the thermal impedance matching with the incident solar radiation, and also with the hot water heat exchanger on the cold side of the thermoelectric module. We have developed an analytic model for the whole system and optimized each component in order to minimize the material cost. TE element fill factor is found to be an important parameter to optimize at low solar concentrations (generated per mass of the thermoelectric elements. Similarly the co-optimization of the microchannel heat exchanger and the TE module can be used to minimize the amount of material in the heat exchanger and the pumping power required for forced convection liquid cooling. Changing the amount of solar concentration, changes the input heat flux and this is another parameter that can be optimized in order to reduce the cost of heat exchanger (by size), the tracking requirement and the whole system. A series of design curves for different solar concentration are obtained. It is shown that the overall efficiency of the system can be more than 80 % at 200x concentration which is independent of the material ZT (TE figure-of-merit). For a material with ZThot~0.9, the electrical conversion efficiency is ~10%. For advanced materials with ZThot ~ 2.8, the electrical conversion efficiency could reach ~21%. 1.

Kazuaki Yazawa; Ali Shakouri

290

Solar hot water system installed at Mobile, Alabama. Final report  

SciTech Connect (OSTI)

This final report describes the solar energy hot water system installed at LaQuinta Motor Inn Inc., at Mobile, Alabama. The building is a 122 unit motel. The system consists of six rows of ten collectors and three rows of eleven collectors (1990 square feet) mounted on the roof. Griswald flow control valves were installed to regulate the flow to each row. Two Heliotrope electronic thermometers with a combined capability of measuring the temperatures of 22 different locations were installed for monitoring purposes. Engineering drawings, component specifications, and operator instructions are included.

None

1980-10-01T23:59:59.000Z

291

Water Heaters (Storage Electric)  

Broader source: Energy.gov [DOE]

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.

292

Boiling during high-velocity impact of water droplets on a hot stainless steel surface  

Science Journals Connector (OSTI)

...rho, V and p 0 are water density, impact velocity and atmospheric pressure, respectively. Assuming water vapour is a perfect...droplet-on-demand generator. Exp. Fluids. 34...of hot surfaces with water sprays. J. Heat Treating...

2006-01-01T23:59:59.000Z

293

Experiments on adding a surfactant to water drops boiling on a hot surface  

Science Journals Connector (OSTI)

...photographs of droplets of water impacting on a hot surface...to film boiling for water and hydrocarbons. Baumeister & Simon...predicting TLeid for hydrocarbons and cryogens, but failed...surfactant to boiling water drops 685 Figure 8...

1997-01-01T23:59:59.000Z

294

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

E-Print Network [OSTI]

study to determine waste of water and energy in residential30 percent. The average waste of energy in the hot water ispaper examines the waste of water and energy associated with

Lutz, Jim

2012-01-01T23:59:59.000Z

295

Energy-efficient water heating  

SciTech Connect (OSTI)

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

NONE

1995-01-01T23:59:59.000Z

296

Numerical simulation of Large Solar Hot Water system in storage tank.  

E-Print Network [OSTI]

??This research is aimed to study the storage tank design parameters effects on the efficiency of the large solar hot water system. Detailed CFD simulation (more)

Shue, Nai-Shen

2012-01-01T23:59:59.000Z

297

Feasibility Analysis of Two Indirect Heat Pump Assisted Solar Domestic Hot Water Systems.  

E-Print Network [OSTI]

??This thesis is an analysis of the simulated performance of two indirect heat pump assisted solar domestic hot water (i-HPASDHW) systems compared to two base (more)

Sterling, Scott Joseph

2011-01-01T23:59:59.000Z

298

Solar heater for swimming pools  

SciTech Connect (OSTI)

A solar heater for swimming pools is provided having one or more heating panels installable on a roof or the like and arranged to discharge into a pool equipped with an apron without need for disturbing or obstructing the apron. This is accomplished by the provision of an elevated bistable dumper adjacent the perimeter of the apron having a dispensing spout normally inclined upwardly but pivoting at intervals to discharge into the pool across the apron without obstructing it. Water to be heated is diverted from the pool filtering system to the solar heater via a pressure regulator and a solar responsive flow control.

Babcock, H.W.

1984-12-04T23:59:59.000Z

299

Feasibility study and roadmap to improve residential hot water distribution systems  

SciTech Connect (OSTI)

Residential building practice currently ignores the losses of energy and water caused by the poor design of hot water systems. These losses include: the waste of water while waiting for hot water to get to the point of use; the wasted heat as water cools down in the distribution system after a draw; and the energy to reheat water that was already heated once before. A feasibility study and an action plan for a proposed research project involving residential hot water distribution systems is being developed. The feasibility study will use past work to estimate of hot water and energy loses caused by current hot water distribution systems in residences. Proposed research project, or roadmap, will develop recommendations for improvements to residential hot water distribution systems. The roadmap addresses the technical obstacles and gaps in our knowledge that prevent water and energy reductions and market adoption of water- and energy-efficient technologies. The initial results of the feasibility study are presented here along with a discussion of a roadmap to improve the efficiency of residential hot water distribution systems.

Lutz, James D.

2004-03-31T23:59:59.000Z

300

Affordable Solar Hot Water and Power LLC | Open Energy Information  

Open Energy Info (EERE)

Water and Power LLC Water and Power LLC Jump to: navigation, search Name Affordable Solar Hot Water and Power LLC Place Dothan, Alabama Zip 36305 Sector Solar Product Solar and Energy Efficiency for buildings and homes Year founded 2006 Number of employees 1-10 Phone number 334-828-1024 Website http://www.asolarpro.com Coordinates 31.2070554°, -85.4994192° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":31.2070554,"lon":-85.4994192,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

Note: This page contains sample records for the topic "hot water heaters" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Building America Top Innovations Hall of Fame Profile … Model Simulating Real Domestic Hot Water Use  

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

and the Davis Energy Group used the and the Davis Energy Group used the Domestic Hot Water Event Schedule Generator to accurately quantify effects of low and high water usage on distribution system measures such as pipe insulation, home run plumbing, and demand-controlled recirculation loops. As progress continues with high-R, tightly sealed thermal enclosures, domestic hot water becomes an increasingly important energy use in high-performance homes. Building America research has improved our ability to model hot water use so new hot water technologies can be more accurately assessed and more readily integrated into high-performance homes. Energy savings for certain residential building technologies depend greatly on occupant behavior. Domestic hot water use is a good example. Simulating

302

Development of a Combined Hot Water and Sorption Store for Solar Thermal Systems  

Science Journals Connector (OSTI)

Abstract The motivation for the development of a combined hot water and sorption store is to complement the advantages and to reduce the disadvantages of the two particular storage technologies. Hot water stores offer high heat supply rates but are particularly suitable for short term storage due to heat losses whereas for a sorption store the power drain is low but it shows the advantage of a high storage density and long-term heat storage almost without losses. The combined hot water and sorption store has been developed using the example of a solar thermal system for domestic hot water preparation. The store consists of a radial stream adsorber integrated in a hot water store. Adsorption and desorption experiments in laboratory have been conducted with a prototype store in full-scale. A numerical model of the combined store has been developed and annual simulations of a solar thermal system including a combined hot water and sorption store have been conducted. The thermal performance has been compared to those of reference hot water stores. The results of the experimental and numerical investigations will be presented in this paper and the benefit of a combined hot water and sorption store applied for solar thermal systems will be discussed.

Rebecca Weber; Henner Kerskes; Harald Drck

2014-01-01T23:59:59.000Z

303

Dynamics of microdroplets over the surface of hot water  

E-Print Network [OSTI]

When drinking a cup of coffee under the morning sunshine, you may notice white membranes of steam floating on the surface of the hot water. They stay notably close to the surface and appear to almost stick to it. Although the membranes whiffle because of the air flow of rising steam, peculiarly fast splitting events occasionally occur. They resemble cracking to open slits approximately 1 mm wide in the membranes, and leave curious patterns. We studied this phenomenon using a microscope with a high-speed video camera and found intriguing details: i) the white membranes consist of fairly monodispersed small droplets of the order of 10 $\\mu\\,{\\rm m}$; ii) they levitate above the water surface by 10$\\sim$100 $\\mu{\\rm m}$; iii) the splitting events are a collective disappearance of the droplets, which propagates as a wave front of the surface wave with a speed of 1$\\sim$2 m/s; and iv) these events are triggered by a surface disturbance, which results from the disappearance of a single droplet.

Takahiro Umeki; Masahiko Ohata; Hiizu Nakanishi; Masatoshi Ichikawa

2015-01-03T23:59:59.000Z

304

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

E-Print Network [OSTI]

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

Sento, H. D.

1981-01-01T23:59:59.000Z

305

Water Heating | Department of Energy  

Energy Savers [EERE]

Energy Saver Water Heating Water Heating Infographic: Water Heaters 101 Infographic: Water Heaters 101 Everything you need to know about saving money on water heating costs....

306

The minimum gas temperature at the inlet of regulators in natural gas pressure reduction stations (CGS) for energy saving in water bath heaters  

Science Journals Connector (OSTI)

Abstract In this study a computational procedure for the computation of JouleThomson coefficient of natural gas has been developed using fundamental thermodynamic equations and AGA-8 equation of state, and then the minimum possible temperature of the natural gas entering to the pressure regulator of city gate stations (CGS) is calculated. As a case study, a CGS located in Bistoon (of Iran's CGSs) with nominal capacity of 20,000 SCMH has been considered. A comparison has been made between the calculated results and corresponding collected data from the station within 10 months. Results of this study help to determine the minimum temperature values of entering gas with different pressures to the regulator in order to avoid hydrate formation of the outlet gas, and can be used to design appropriate temperature control systems for water bath heaters and in turn save consumed energy for gas heating. The results show that heating the gas up to calculated minimum temperatures can save energy consumption of heaters by 43%. Also, it is indicated that by applying a control system, based on the result of this study, in the CGS the payback period would be less than a year.

Esmail Ashouri; Farzad Veysi; Ehsan Shojaeizadeh; Maryam Asadi

2014-01-01T23:59:59.000Z

307

Impacts of Water Quality on Residential Water Heating Equipment  

SciTech Connect (OSTI)

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

Widder, Sarah H.; Baechler, Michael C.

2013-11-01T23:59:59.000Z

308

Ch. III, Interpretation of water sample analyses Waunita Hot...  

Open Energy Info (EERE)

analyses Waunita Hot Springs area Gunnison County, Colorado Author R. H. Carpenter Editor T. G. Zacharakis Published Colorado Geological Survey in Cooperation with the U.S....

309

Heat and Mass Transfer in a Wetted Thermal Insulation of hot Water Pipes Operating Under Flooding Conditions  

Science Journals Connector (OSTI)

We present the results of numerical simulation of the thermal regimes of hot water pipes under flooding conditions with account for evaporation and diffusion ... modeling thermal regimes of hot water pipes under

V. Yu. Polovnikov; E. V. Gubina

2014-09-01T23:59:59.000Z

310

The Impact of Hedonism on Domestic Hot Water Energy Demand for Showering ? The Case of the Schanzenfest, Hamburg  

Science Journals Connector (OSTI)

The causes of variation in energy demand for hot water in showering or bathing ... was triangulated with electric meter data to examine energy use behaviours and explore changes in hot water demand. This occurred...

Stephen Lorimer; Marianne Jang; Korinna Thielen

2013-01-01T23:59:59.000Z

311

Grouped exposed metal heaters  

DOE Patents [OSTI]

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

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

2010-11-09T23:59:59.000Z

312

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

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

Hot Water Draw Patterns in Single-Family Houses: Findings from Field Hot Water Draw Patterns in Single-Family Houses: Findings from Field Studies Title Hot Water Draw Patterns in Single-Family Houses: Findings from Field Studies Publication Type Report LBNL Report Number LBNL-4830E Year of Publication 2011 Authors Lutz, James D., Renaldi, Alexander B. Lekov, Yining Qin, and Moya Melody Document Number LBNL-4830E Pagination 26 Date Published 05/2011 Publisher Lawrence Berkeley National Laboratory City Berkeley Abstract This report describes data regarding hot water draw patterns that Lawrence Berkeley National Laboratory obtained from 10 studies. The report describes our purposes in collecting the data; the ways in which we managed, cleaned, and analyzed the data; and the results of our data analysis. We found that daily hot water use is highly variable both among residences and within the same residence. We also found that the distributions of daily hot water use are not symmetrical normal distributions. Thus we used median, not average, values to characterize typical daily hot water use. This report presents summary information that illustrates the results of our data collection and some initial analysis.

313

DOE Office of Indian Energy Foundational Course on Direct Use for Building Heat and Hot Water  

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

Direct Use for Building Direct Use for Building Heat and Hot Water Webinar (text version) Below is the text version of the Webinar titled "DOE Office of Indian Energy Foundational Courses Renewable Energy Technologies: Direct Use for Building Heat and Hot Water." Slide 1 Amy Hollander: Hello, I'm Amy Hollander with the National Renewable Energy Laboratory. Welcome to today's webinar on Building Heat and Hot Water sponsored by the U.S. Department of Energy Office of Indian Energy Policy and Programs. This webinar is being recorded from DOE's National Renewable Energy Laboratory's new state-of-the-art net zero

314

Thermal and sanitary performance of domestic hot water cylinders: Conflicting requirements  

Science Journals Connector (OSTI)

Abstract In order to understand the sanitary implications around the demand side management of domestic hot water cylinders, microbial samples were taken from the bottom of 10 UK domestic electric hot water tanks whose heating elements are connected to a controlled off-peak supply. The results indicated high concentrations of bacteria in the water and biofilm. Microbial concentrations remained high in spite of the application of seven hours of heating during off-peak hours. Further numerical and experimental work shows that this problem arises due to the differing modes of heat transfer that prevail above and below the immersion element. The results from thermal and bacterial growth models suggest that it is impossible to achieve sanitary conditions throughout standard domestic hot water tanks without significantly increasing the heating element temperature or lowering the heating element from its current position. Raising the immersion thermostat temperature results in additional heat losses whilst lowering the immersion position compromises thermal stratification leading to uneconomical operation. Guidelines around storing hot water at temperatures that are sufficient for the purposes of sterilizing human pathogens such as Legionella, fail to take account of the conflict between thermal and sanitary performance. By better understanding the distribution of temperatures and bacteria within hot water tanks along with the associated risks, improved design and control strategies may be adopted to facilitate effective demand side management of hot water systems whilst meeting sanitary requirements.

Peter M. Armstrong; Meg Uapipatanakul; Ian Thompson; Duane Ager; Malcolm McCulloch

2014-01-01T23:59:59.000Z

315

Solar Hot Water Technology: Office of Power Technologies (OPT) Success Stories Series Fact Sheet  

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

Buildings Program Buildings Program Office of Solar Energy Technologies Every home, commercial building, and indus- trial facility requires hot water. An enormous amount of energy is consumed in the United States producing and maintaining our supply of on-demand hot water; the residential and commercial sectors combined use 3 quads (quadrillion Btus) of energy per year, roughly 3% of the total U.S. energy consumption. As of 1998, 1.2 million systems have been installed on homes in the United States, with 6000 currently being added each year. Yet the potential for growth is huge, as solar hot water systems are supplying less than 2% of the nation's hot water. For industrial applications, the growth potential lies in large-scale systems, using flat-plate and trough-type collectors which are being installed in increasing numbers in

316

Model Simulating Real Domestic Hot Water Use- Building America Top Innovation  

Broader source: Energy.gov [DOE]

This Building America Innovations profile describes Building America research that is improving domestic hot water modeling capabilities to more effectively address one of the largest energy uses in residential buildings.

317

Under Pressure and in Hot Water: Algae Conversion to Fuels and Chemicals  

E-Print Network [OSTI]

March 3rd Under Pressure and in Hot Water: Algae Conversion to Fuels and Chemicals Dr. Phil:50 April 10th (Joint Seminar with EES) Fecal Sludge-Fed Biodiesel Plants: The Next-Generation Urban

Minsker, Barbara S.

318

Tribal Renewable Energy Foundational Course: Direct Use for Building Heat and Hot Water  

Broader source: Energy.gov [DOE]

Watch the U.S. Department of Energy Office of Indian Energy foundational course webinar on direct use for building heat and hot water by clicking on the .swf link below. You can also download the...

319

An investigation of numerical dispersion in the hot water injection process  

E-Print Network [OSTI]

dispersion is important in the simulation of the hot water injection process with heat loss. Numerical results are compared to the analytical solution of the simple convective-diffusion problem and Lauwerier's analytical solution to the hot water... simulated, then some type of method for controlling numerical dispersion will have to be implemented. It is obvious from the numerical results that numerical dispersion is affected by injection velocity and distance travelled, but these variables do...

McVay, Duane Allen

2012-06-07T23:59:59.000Z

320

Solar hot water system installed at Las Vegas, Nevada. Final report  

SciTech Connect (OSTI)

The solar hot water system installed at LaQuinta Motor Inn Inc., at Las Vegas, Nevada is described. The Inn is a three-story building with a flat roof for installation of the solar panels. The system consists of 1200 square feet of liquid flat plate collectors, a 2500 gallon insulated vertical steel storage tank, two heat exchangers and pumps and controls. The system was designed to supply approximately 74 percent of the total hot water load.

None

1981-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hot water heaters" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Water Sampling At Hot Lake Area (Wood, 2002) | Open Energy Information  

Open Energy Info (EERE)

Hot Lake Area (Wood, 2002) Hot Lake Area (Wood, 2002) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Water Sampling At Hot Lake Area (Wood, 2002) Exploration Activity Details Location Hot Lake Area Exploration Technique Water Sampling Activity Date Usefulness could be useful with more improvements DOE-funding Unknown Notes Geothermal fluids from hot springs and wells have been sampled from a number of locations, including: 1) the North Island of New Zealand (three sets of samples from three different years) and the South Island of New Zealand (1 set of samples); 2) the Cascades of Oregon; 3) the Harney, Alvord Desert and Owyhee geothermal areas of Oregon; 4) the Dixie Valley and Beowawe fields in Nevada; 5) Palinpiiion, the Philippines; 6) the Salton Sea and Heber geothermal fields of southern California; and 7) the

322

Water Sampling At Crane Hot Springs Area (Wood, 2002) | Open Energy  

Open Energy Info (EERE)

Hot Springs Area (Wood, 2002) Hot Springs Area (Wood, 2002) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Water Sampling At Crane Hot Springs Area (Wood, 2002) Exploration Activity Details Location Crane Hot Springs Area Exploration Technique Water Sampling Activity Date Usefulness could be useful with more improvements DOE-funding Unknown Notes Geothermal fluids from hot springs and wells have been sampled from a number of locations, including: 1) the North Island of New Zealand (three sets of samples from three different years) and the South Island of New Zealand (1 set of samples); 2) the Cascades of Oregon; 3) the Harney, Alvord Desert and Owyhee geothermal areas of Oregon; 4) the Dixie Valley and Beowawe fields in Nevada; 5) Palinpiiion, the Philippines; 6) the

323

Water Sampling At Mccredie Hot Springs Area (Wood, 2002) | Open Energy  

Open Energy Info (EERE)

Mccredie Hot Springs Area (Wood, 2002) Mccredie Hot Springs Area (Wood, 2002) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Water Sampling At Mccredie Hot Springs Area (Wood, 2002) Exploration Activity Details Location Mccredie Hot Springs Area Exploration Technique Water Sampling Activity Date Usefulness could be useful with more improvements DOE-funding Unknown Notes Geothermal fluids from hot springs and wells have been sampled from a number of locations, including: 1) the North Island of New Zealand (three sets of samples from three different years) and the South Island of New Zealand (1 set of samples); 2) the Cascades of Oregon; 3) the Harney, Alvord Desert and Owyhee geothermal areas of Oregon; 4) the Dixie Valley and Beowawe fields in Nevada; 5) Palinpiiion, the Philippines; 6) the

324

Recovery of energy from geothermal brine and other hot water sources  

DOE Patents [OSTI]

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

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

1981-01-01T23:59:59.000Z

325

Water Sampling At Alvord Hot Springs Area (Wood, 2002) | Open Energy  

Open Energy Info (EERE)

Water Sampling At Alvord Hot Springs Area (Wood, Water Sampling At Alvord Hot Springs Area (Wood, 2002) Exploration Activity Details Location Alvord Hot Springs Area Exploration Technique Water Sampling Activity Date Usefulness could be useful with more improvements DOE-funding Unknown Notes Geothermal fluids from hot springs and wells have been sampled from a number of locations, including: 1) the North Island of New Zealand (three sets of samples from three different years) and the South Island of New Zealand (1 set of samples); 2) the Cascades of Oregon; 3) the Harney, Alvord Desert and Owyhee geothermal areas of Oregon; 4) the Dixie Valley and Beowawe fields in Nevada; 5) Palinpiiion, the Philippines; 6) the Salton Sea and Heber geothermal fields of southern California; and 7) the Dieng field in Central Java, Indonesia. We have analyzed the samples from

326

Water Sampling At Beowawe Hot Springs Area (Wood, 2002) | Open Energy  

Open Energy Info (EERE)

Water Sampling At Beowawe Hot Springs Area (Wood, Water Sampling At Beowawe Hot Springs Area (Wood, 2002) Exploration Activity Details Location Beowawe Hot Springs Area Exploration Technique Water Sampling Activity Date Usefulness could be useful with more improvements DOE-funding Unknown Notes Geothermal fluids from hot springs and wells have been sampled from a number of locations, including: 1) the North Island of New Zealand (three sets of samples from three different years) and the South Island of New Zealand (1 set of samples); 2) the Cascades of Oregon; 3) the Harney, Alvord Desert and Owyhee geothermal areas of Oregon; 4) the Dixie Valley and Beowawe fields in Nevada; 5) Palinpiiion, the Philippines; 6) the Salton Sea and Heber geothermal fields of southern California; and 7) the Dieng field in Central Java, Indonesia. We have analyzed the samples from

327

New Hampshire Electric Co-Op - Solar Hot Water | Department of Energy  

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

New Hampshire Electric Co-Op - Solar Hot Water New Hampshire Electric Co-Op - Solar Hot Water New Hampshire Electric Co-Op - Solar Hot Water < Back Eligibility Residential Savings Category Heating & Cooling Solar Water Heating Maximum Rebate $1,500 Program Info State New Hampshire Program Type Utility Rebate Program Rebate Amount 20% of installed costs Provider New Hampshire Electric Co-Op New Hampshire Electric Co-Op (NHEC) offers rebates to residential customers who install qualified solar water-heating systems. The rebate is equal to 20% of installed system costs, with a maximum award of $1,500. Systems must be pre-approved, and installed in NHEC's service territory by a qualified installer. Program funds are available on a first-come, first-served basis. See the program web site listed above for more information, an application

328

Explosives tester with heater  

DOE Patents [OSTI]

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

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

2010-08-10T23:59:59.000Z

329

Water Heating | Department of Energy  

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

to cut your water heating bill. Estimating Costs and Efficiency of Storage, Demand, and Heat Pump Water Heaters A water heater's energy efficiency is determined by the energy...

330

Water Sampling At Buffalo Valley Hot Springs Area (Laney, 2005) | Open  

Open Energy Info (EERE)

Water Sampling At Buffalo Valley Hot Springs Area Water Sampling At Buffalo Valley Hot Springs Area (Laney, 2005) Exploration Activity Details Location Buffalo Valley Hot Springs Area Exploration Technique Water Sampling Activity Date Usefulness not indicated DOE-funding Unknown Notes Geochemical Sampling of Thermal and Non-thermal Waters in Nevada, Shevenell and Garside. The objective of this project is to obtain geochemical data from springs (and some wells) for which data are not publicly available, or for which the analyses are incomplete, poor, or nonexistent. With these data, geothermometers are being calculated and a preliminary assessment of the geothermal potential and ranking of the sampled areas is being conducted using the new geochemical data. Objectives changed slightly in 2004. Samples are now being collected at sites identified by other

331

Webinar: ENERGY STAR Hot Water Systems for High Performance Homes  

Broader source: Energy.gov [DOE]

This presentation is from the Building America research team BA-PIRC webinar on September 30, 2011 providing informationprovide information about how to achieve energy savings from solar water heating, electric dedicated heat pump water heating, and gas tankless systems.

332

Department of Energy - Swimming Pool Heaters  

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

736189 en Gas Swimming Pool Heaters http:energy.govenergysaverarticlesgas-swimming-pool-heaters heaters" class"title-link">

333

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

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Rock-Water Interactions In Hot Dry Rock Geothermal Systems- Field Investigations Of In Situ Geochemical Behavior Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Rock-Water Interactions In Hot Dry Rock Geothermal Systems- Field Investigations Of In Situ Geochemical Behavior Details Activities (5) Areas (2) Regions (0) Abstract: Two hot dry rock (HDR) geothermal energy reservoirs have been created by hydraulic fracturing of Precambrian granitic rock between two wells on the west flank of the Valles Caldera in the Jemez Mountains of northern New Mexico. Heat is extracted by injecting water into one well,

334

Why Is Nevada in Hot Water? Structural Controls and Tectonic Model of  

Open Energy Info (EERE)

Why Is Nevada in Hot Water? Structural Controls and Tectonic Model of Why Is Nevada in Hot Water? Structural Controls and Tectonic Model of Geothermal Systems in the Northwestern Great Basin Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Why Is Nevada in Hot Water? Structural Controls and Tectonic Model of Geothermal Systems in the Northwestern Great Basin Abstract In the western Great Basin, the Walker Lane is a system of right-lateral strike-slip faults accommodating ~15-25% of relative motion between the Pacific and North American plates. Relatively high rates of recent (<10 Ma) west-northwest extension absorb northwestward declining dextral motion in the Walker Lane, diffusing that motion into the Basin-Range. Abundant geothermal fields cluster in several northeasttrending belts in the

335

Pattern Of Shallow Ground Water Flow At Mount Princeton Hot Springs,  

Open Energy Info (EERE)

Pattern Of Shallow Ground Water Flow At Mount Princeton Hot Springs, Pattern Of Shallow Ground Water Flow At Mount Princeton Hot Springs, Colorado, Using Geoelectrical Methods Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Pattern Of Shallow Ground Water Flow At Mount Princeton Hot Springs, Colorado, Using Geoelectrical Methods Details Activities (2) Areas (1) Regions (0) Abstract: In geothermal fields, open faults and fractures often act as high permeability pathways bringing hydrothermal fluids to the surface from deep reservoirs. The Mount Princeton area, in south-central Colorado, is an area that has an active geothermal system related to faulting and is therefore a suitable natural laboratory to test geophysical methods. The Sawatch range-front normal fault bordering the half-graben of the Upper Arkansas

336

Solar pool heaters: The simplest use of active solar energy  

SciTech Connect (OSTI)

Solar pool heating is the most attractive solar water heating market today, because most pool heaters pay back their purchase price in lower utility bills in two to three years. This article describes why solar pool heaters are popular and their design, operation, and return on investment. 1 fig.

Sheinkopf, K. [Florida Solar Energy Center, Cocoa, FL (United States)

1997-11-01T23:59:59.000Z

337

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

Broader source: Energy.gov [DOE]

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

338

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

Broader source: Energy.gov [DOE]

Below is the text version of the webinar, Efficient Hot Water Distribution II -- How to Get it Right, presented in January2014.

339

On the Penetration of Water into Hot Rock  

Science Journals Connector (OSTI)

......that maximizes the penetration rate can be found from...lower bound to the rate of water penetration, but, since there...one-dimensional model of water penetration so far derived has...it is the rapid rate of advance of the......

C. R. B. Lister

1974-12-01T23:59:59.000Z

340

Water Sampling At Mickey Hot Springs Area (Wood, 2002) | Open Energy  

Open Energy Info (EERE)

Mickey Hot Springs Area (Wood, Mickey Hot Springs Area (Wood, 2002) Exploration Activity Details Location Mickey Hot Springs Area Exploration Technique Water Sampling Activity Date Usefulness could be useful with more improvements DOE-funding Unknown Notes Geothermal fluids from hot springs and wells have been sampled from a number of locations, including: 1) the North Island of New Zealand (three sets of samples from three different years) and the South Island of New Zealand (1 set of samples); 2) the Cascades of Oregon; 3) the Harney, Alvord Desert and Owyhee geothermal areas of Oregon; 4) the Dixie Valley and Beowawe fields in Nevada; 5) Palinpiiion, the Philippines; 6) the Salton Sea and Heber geothermal fields of southern California; and 7) the Dieng field in Central Java, Indonesia. We have analyzed the samples from

Note: This page contains sample records for the topic "hot water heaters" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

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

Open Energy Info (EERE)

Umpqua Hot Springs Area (Wood, Umpqua Hot Springs Area (Wood, 2002) Exploration Activity Details Location Umpqua Hot Springs Area Exploration Technique Water Sampling Activity Date Usefulness could be useful with more improvements DOE-funding Unknown Notes Geothermal fluids from hot springs and wells have been sampled from a number of locations, including: 1) the North Island of New Zealand (three sets of samples from three different years) and the South Island of New Zealand (1 set of samples); 2) the Cascades of Oregon; 3) the Harney, Alvord Desert and Owyhee geothermal areas of Oregon; 4) the Dixie Valley and Beowawe fields in Nevada; 5) Palinpiiion, the Philippines; 6) the Salton Sea and Heber geothermal fields of southern California; and 7) the Dieng field in Central Java, Indonesia. We have analyzed the samples from

342

Floating solar pool heater  

SciTech Connect (OSTI)

A floating solar heater for swimming pools is disclosed which includes a top cover, a vertical outer side wall with inclined inner side wall segments connected thereto, an outside rim and a bottom wall. The inner side wall segments are octagonal, coated with light reflective material, and aid in reflecting the sun's rays to heat the space inside the walls formed by the cover which dead air space also provides for floatation of the heater. The bottom wall is heated by direct sun inpingement and by the air in contact with it and is formed of a material having high heat conductivity.

McCluskey, J.E.

1981-08-18T23:59:59.000Z

343

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

SciTech Connect (OSTI)

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

Not Available

1980-06-01T23:59:59.000Z

344

Portable Heaters | Department of Energy  

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

Portable Heaters Portable Heaters Portable Heaters November 26, 2013 - 2:41pm Addthis Portable heaters can be an efficient way to supplement inadequate heating. | Photo courtesy iStockphoto.com Portable heaters can be an efficient way to supplement inadequate heating. | Photo courtesy iStockphoto.com What does this mean for me? A portable heater is a good choice if you have a space that requires supplemental heating or is infrequently occupied. You should carefully follow all the manufacturer's installation and operation instructions. Small space heaters are typically used when the main heating system is inadequate or when central heating is too costly to install or operate. In some cases, small space heaters can be less expensive to use if you only want to heat one room or supplement inadequate heating in one room. They

345

Energy Conservation in Process Heaters  

E-Print Network [OSTI]

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

Bagge, R. W.

1982-01-01T23:59:59.000Z

346

Water Sampling At Zim's Hot Springs Geothermal Area (Wood, 2002) | Open  

Open Energy Info (EERE)

2002) 2002) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Water Sampling At Zim's Hot Springs Geothermal Area (Wood, 2002) Exploration Activity Details Location Zim's Hot Springs Geothermal Area Exploration Technique Water Sampling Activity Date Usefulness could be useful with more improvements DOE-funding Unknown Notes Geothermal fluids from hot springs and wells have been sampled from a number of locations, including: 1) the North Island of New Zealand (three sets of samples from three different years) and the South Island of New Zealand (1 set of samples); 2) the Cascades of Oregon; 3) the Harney, Alvord Desert and Owyhee geothermal areas of Oregon; 4) the Dixie Valley and Beowawe fields in Nevada; 5) Palinpiiion, the Philippines; 6) the

347

Water Sampling At Breitenbush Hot Springs Area (Wood, 2002) | Open Energy  

Open Energy Info (EERE)

Wood, 2002) Wood, 2002) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Water Sampling At Breitenbush Hot Springs Area (Wood, 2002) Exploration Activity Details Location Breitenbush Hot Springs Area Exploration Technique Water Sampling Activity Date Usefulness could be useful with more improvements DOE-funding Unknown Notes Geothermal fluids from hot springs and wells have been sampled from a number of locations, including: 1) the North Island of New Zealand (three sets of samples from three different years) and the South Island of New Zealand (1 set of samples); 2) the Cascades of Oregon; 3) the Harney, Alvord Desert and Owyhee geothermal areas of Oregon; 4) the Dixie Valley and Beowawe fields in Nevada; 5) Palinpiiion, the Philippines; 6) the

348

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

Open Energy Info (EERE)

Wood, 2002) Wood, 2002) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Water Sampling At Belknap-Foley-Bigelow Hot Springs Area (Wood, 2002) Exploration Activity Details Location Belknap-Foley-Bigelow Hot Springs Area Exploration Technique Water Sampling Activity Date Usefulness could be useful with more improvements DOE-funding Unknown Notes Geothermal fluids from hot springs and wells have been sampled from a number of locations, including: 1) the North Island of New Zealand (three sets of samples from three different years) and the South Island of New Zealand (1 set of samples); 2) the Cascades of Oregon; 3) the Harney, Alvord Desert and Owyhee geothermal areas of Oregon; 4) the Dixie Valley and Beowawe fields in Nevada; 5) Palinpiiion, the Philippines; 6) the

349

High-Throughput Screening Technique for Biomass Conversion in Hot Compressed Water  

Science Journals Connector (OSTI)

High-Throughput Screening Technique for Biomass Conversion in Hot Compressed Water ... Formic acid is known to be converted completely to gaseous products, mainly CO2 and H2 at high temperatures. ... The Ru/TiO2 catalyst is able to convert WSIS (char) to gas, while leaving the oil product practically unaltered with respect to compn. ...

Pavlina Nanou; Wim P. M. van Swaaij; Sascha R. A. Kersten; Guus van Rossum

2012-01-17T23:59:59.000Z

350

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

E-Print Network [OSTI]

a large tank through a long coil of copper tubing within the kiln to produce 4 to 5 l. of hot water per colonies were formed, and mature colonies expanded into the plots. A third treatment was made in the spring

351

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

E-Print Network [OSTI]

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

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

2012-01-01T23:59:59.000Z

352

Archaeoglobus fulgidus Isolated from Hot North Sea Oil Field Waters  

Science Journals Connector (OSTI)

...hydrothermal systems near Mexico (6). The sulfate-reducing...generation of H2S in geothermal heated oil wells when suitable substrates...and steel alloys in oil wells and in the oil-processing...in the production well head or in the oil-water...

Janiche Beeder; Roald Kre Nilsen; Jan Thomas Rosnes; Terje Torsvik; Torleiv Lien

1994-04-01T23:59:59.000Z

353

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

SciTech Connect (OSTI)

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

Not Available

1980-04-01T23:59:59.000Z

354

Water, Vapor, and Salt Dynamics in a Hot Repository  

SciTech Connect (OSTI)

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

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

2007-07-01T23:59:59.000Z

355

Don't Let Your Money and Hot Water Go Down the Drain | Department of Energy  

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

Don't Let Your Money and Hot Water Go Down the Drain Don't Let Your Money and Hot Water Go Down the Drain Don't Let Your Money and Hot Water Go Down the Drain December 9, 2008 - 4:00am Addthis John Lippert Do you look at your retirement savings statements and feel like you're sending your money down the drain? Do you deposit more money each paycheck into your retirement account, but find the balance goes down, not up? Pssst, want to invest in a "sure thing?" No, this isn't a scam. It's a device that has no moving parts to break down, but is certain to save you energy, and thus save you money by lowering your utility bills. When we all take showers and baths, wash the dishes or clothes, and wash our hands, we send heated water literally down the drain. That typically represents 80%-90% of the energy used to heat water in a home. Drain-water (or

356

Immersible solar heater for fluids  

DOE Patents [OSTI]

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

Kronberg, James W. (Aiken, SC)

1995-01-01T23:59:59.000Z

357

Promising freeze protection alternatives in solar domestic hot water systems  

SciTech Connect (OSTI)

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

Bradley, D.E.

1997-12-31T23:59:59.000Z

358

Low rank coal upgrading in a flow of hot water  

SciTech Connect (OSTI)

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

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

2009-09-15T23:59:59.000Z

359

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

E-Print Network [OSTI]

). The spraying system functioned by circulating hot water from the water bath to the spray gun at a given pressure and temperature. The pressure was constantly monitored by a pressure gauge (Marshall Town 88901, USA) installed in the valve junction.... The temperature m the water bath was monitored by a digital thermometer (Tegam 871, Digital Thermometer) with a type K thermocouple sensor. Also, the temperature of the spray coming out of the jet was measured with a thermocouple inserted and sealed in the tip...

Barakate, Michelle Lee

2012-06-07T23:59:59.000Z

360

Solar hot water demonstration project at Red Star Industrial Laundry, Fresno, California  

SciTech Connect (OSTI)

The Final Report of the Solar Hot Water System located at the Red Star Industrial Laundry, 3333 Sabre Avenue, Fresno, California, is presented. The system was designed as an integrated wastewater heat recovery and solar preheating system to supply a part of the hot water requirements. It was estimated that the natural gas demand for hot water heating could be reduced by 56 percent (44 percent heat reclamation and 12 percent solar). The system consists of a 16,500 gallon tube-and-shell wastewater heat recovery subsystem combined with a pass-through 6,528 square foot flat plate Ying Manufacturing Company Model SP4120 solar collector subsystem, a 12,500 gallon fiber glass water storage tank subsystem, pumps, heat exchangers, controls, and associated plumbing. The design output of the solar subsystem is approximately 2.6 x 10/sup 9/ Btu/year. Auxiliary energy is provided by a gas fired low pressure boiler servicing a 4,000 gallon service tank. This project is part of the US Department of Energy's Solar Demonstration Program with DOE sharing $184,841 of the $260,693 construction cost. The system was turned on in July 1977, and acceptance tests completed in September 1977. The demonstration period for this project ends September 2, 1982.

None

1980-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "hot water heaters" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

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

E-Print Network [OSTI]

Boiling Water at Hot Creek--The Dangerous and Dynamic Thermal Springs in California's Long Valley.S. Geological Survey USGS Fact Sheet 2007-3045 2007 T Hot Creek flows through the Long Valley Caldera Airport Fish hatchery CH-10B 44-16 Well Well Long Valley C aldera Area of Map Californ i a The thermal

Torgersen, Christian

362

Covered Product Category: Residential Electric Resistance Water...  

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

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

363

Drain Water Heat Recovery | Department of Energy  

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

Drain Water Heat Recovery Drain Water Heat Recovery Drain Water Heat Recovery June 15, 2012 - 6:20pm Addthis Diagram of a drain water heat recovery system. Diagram of a drain water heat recovery system. How does it work? Use heat from water you've already used to preheat more hot water, reducing your water heating costs. Any hot water that goes down the drain carries away energy with it. That's typically 80%-90% of the energy used to heat water in a home. Drain-water (or greywater) heat recovery systems capture this energy from water you've already used (for example, to shower, wash dishes, or wash clothing) to preheat cold water entering the water heater or going to other water fixtures. This reduces the amount of energy needed for water heating. How It Works Drain-water heat recovery technology works well with all types of water

364

Drain Water Heat Recovery | Department of Energy  

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

Drain Water Heat Recovery Drain Water Heat Recovery Drain Water Heat Recovery June 15, 2012 - 6:20pm Addthis Diagram of a drain water heat recovery system. Diagram of a drain water heat recovery system. How does it work? Use heat from water you've already used to preheat more hot water, reducing your water heating costs. Any hot water that goes down the drain carries away energy with it. That's typically 80%-90% of the energy used to heat water in a home. Drain-water (or greywater) heat recovery systems capture this energy from water you've already used (for example, to shower, wash dishes, or wash clothing) to preheat cold water entering the water heater or going to other water fixtures. This reduces the amount of energy needed for water heating. How It Works Drain-water heat recovery technology works well with all types of water

365

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

SciTech Connect (OSTI)

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

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

1980-02-01T23:59:59.000Z

366

Immersible solar heater for fluids  

DOE Patents [OSTI]

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

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

1994-01-01T23:59:59.000Z

367

Immersible solar heater for fluids  

DOE Patents [OSTI]

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

Kronberg, J.W.

1995-07-11T23:59:59.000Z

368

DOE Office of Indian Energy Foundational Course on Direct Use for Building Heat and Hot Water  

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

DIRECT USE FOR BUILDING HEAT & HOT WATER Presented by the National Renewable Energy Laboratory Course Outline 2 What we will cover...  About the DOE Office of Indian Energy Education Initiative  Course Introduction  Solar Thermal and Solar Ventilation Air Pre-Heat - Resources, Technology, Examples & Cost, and References  Biomass Heat - Resources, Technology, Examples & Cost, and References  Geothermal Building Heat - Resources, Technology, Examples & Cost, and References  Additional Information & Resources Introduction The U.S. Department of Energy (DOE) Office of Indian Energy Policy and Programs is responsible for assisting Tribes with energy planning and development, infrastructure, energy costs, and electrification of Indian

369

Methods for forming long subsurface heaters  

DOE Patents [OSTI]

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

Kim, Dong Sub

2013-09-17T23:59:59.000Z

370

An Analysis of Maximum Residential Energy Efficiency in Hot and Humid Climates  

E-Print Network [OSTI]

the high efficiency instantaneous water heater with electronic ignition. The largest equipment energy savings (20%) was achieved from the horizontal-axis clothes washer. Compact fluorescent lamps (CFLs) saved 75% lighting energy use. Among all...AN ANALYSIS OF MAXIMUM RESIDENTIAL ENERGY EFFICIENCY IN HOT AND HUMID CLIMATES Mini Malhotra Graduate Research Assistant Jeff Haberl, Ph.D., P.E. Professor/Associate Director Energy Systems Laboratory, Texas A&M University College...

Malhotra, M.; Haberl, J. S.

2006-01-01T23:59:59.000Z

371

High performance in low-flow solar domestic hot water systems  

SciTech Connect (OSTI)

Low-flow solar hot water heating systems employ flow rates on the order of 1/5 to 1/10 of the conventional flow. Low-flow systems are of interest because the reduced flow rate allows smaller diameter tubing, which is less costly to install. Further, low-flow systems result in increased tank stratification. Lower collector inlet temperatures are achieved through stratification and the useful energy produced by the collector is increased. The disadvantage of low-flow systems is the collector heat removal factor decreases with decreasing flow rate. Many solar domestic hot water systems require an auxiliary electric source to operate a pump in order to circulate fluid through the solar collector. A photovoltaic driven pump can be used to replace the standard electrical pump. PV driven pumps provide an ideal means of controlling the flow rate, as pumps will only circulate fluid when there is sufficient radiation. Peak performance was always found to occur when the heat exchanger tank-side flow rate was approximately equal to the average load flow rate. For low collector-side flow rates, a small deviation from the optimum flow rate will dramatically effect system performance.

Dayan, M.

1997-12-31T23:59:59.000Z

372

Primary energy consumption of the dwelling with solar hot water system and biomass boiler  

Science Journals Connector (OSTI)

Abstract This paper presents a new methodology, based on the energy performance of buildings Directive related European norms. It is developed to overcome ambiguities and incompleteness of these standards in determining the delivered and primary energy. The available procedures from the present Algorithm for determining the energy demands and efficiency of technical systems in buildings, normally used for energy performance certification of buildings, also allow detailed analyzes of the influence of particular system components on the overall system energy efficiency. The calculation example is given for a Croatian reference dwelling, equipped with a solar hot water system, backed up with a biomass boiler for space heating and domestic hot water purposes as a part of the dwelling energy performance certification. Calculations were performed for two cases corresponding to different levels of the dwelling thermal insulation with an appropriate heating system capacity, in order to investigate the influence of the building heat losses on the system design and energy consumption. The results are compared against those obtained for the conventional system with a gas boiler in terms of the primary energy consumption as well as of investment and operating costs. These results indicate great reduction in both delivered and primary energy consumption when a solar system with biomass boiler is used instead of the conventional one. Higher savings are obtained in the case of the dwelling with higher energy need for space heating. Such dwellings also have a shorter payback period than the ones with better thermal insulation.

Mihaela Berkovi?-ubi?; Martina Rauch; Damir Dovi?; Mladen Andrassy

2014-01-01T23:59:59.000Z

373

New test methodologies to analyse direct expansion solar assisted heat pumps for domestic hot water  

Science Journals Connector (OSTI)

Abstract Since there are not specific standards for testing direct expansion solar assisted heat pumps for domestic hot water, new testing methodologies are proposed supported by laboratory experiments. Two methodologies were developed for performance measurement: modified BIN method and long term performance prediction with a TRNSYS model validated with specific experimental conditions. The long term performance prediction is a methodology similar to the already obtained for solar thermal systems. A system was tested in Lisbon during one year, covering almost all possible local weather conditions. The hot water tapping test cycle used was in agreement with recent standards EN16147:2011 or EN15316-3-1:2007. The influence of average daily air temperature, dew point temperature and solar irradiation was analysed. The seasonal performance factor was calculated for two cities in Portugal (Lisbon and Porto) and for additional four cities in Europe (Davos, Athens, Helsinki and Strasburg). The establishment of a procedure to calculate the seasonal performance of this kind of systems is very important according to the directive 2009/28/EC of the European Parliament and of the Council.

Jorge Faco; Maria Joo Carvalho

2014-01-01T23:59:59.000Z

374

Heater head for stirling engine  

DOE Patents [OSTI]

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

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

1985-07-09T23:59:59.000Z

375

Phase change material storage heater  

DOE Patents [OSTI]

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

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

1997-01-01T23:59:59.000Z

376

Proposal for the Purchase, Without a Call for Tenders, of a Medium-Temperature Hot Water Boiler for the 300 GeV Accelerator  

E-Print Network [OSTI]

Proposal for the Purchase, Without a Call for Tenders, of a Medium-Temperature Hot Water Boiler for the 300 GeV Accelerator

1976-01-01T23:59:59.000Z

377

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

SciTech Connect (OSTI)

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

Russo, Bryan J.; Chvala, William D.

2010-09-30T23:59:59.000Z

378

Small Space Heater Basics | Department of Energy  

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

Small Space Heater Basics Small Space Heater Basics Small Space Heater Basics August 19, 2013 - 10:38am Addthis Small space heaters, also called portable heaters, are typically used when the main heating system is inadequate or when central heating is too costly to install or operate. Space heater capacities generally range between 10,000 Btu to 40,000 Btu per hour. Common fuels used for this purpose are electricity, propane, natural gas, and kerosene. Although most space heaters rely on convection (the circulation of air in a room), some rely on radiant heating; that is, they emit infrared radiation that directly heats up objects and people that are within their line of sight. Combustion Space Heaters Space heaters are classified as vented and unvented, or "vent free." Unvented combustion units are not recommended for inside use, as they

379

Retrofit Integrated Space & Water Heating: Field Assessment, Minneapolis, Minnesota (Fact Sheet)  

SciTech Connect (OSTI)

This project analyzed combined condensing water heaters or boilers and hydronic air coils to provide high efficiency domestic hot water and forced air space heating. Called 'Combi' systems, they provided similar space and water heating performance less expensively than installing two condensing appliances. The system's installed costs were cheaper than installing a condensing furnace and either a condensing tankless or condensing storage water heater. However, combi costs must mature and be reduced before they are competitive with a condensing furnace and power vented water heater (EF of 0.60). Better insulation and tighter envelopes are reducing space heating loads for new and existing homes. For many homes, decreased space heating loads make it possible for both space and domestic water heating loads to be provided with a single heating plant. These systems can also eliminate safety issues associated with natural draft appliances through the use of one common sealed combustion vent.

Not Available

2014-05-01T23:59:59.000Z

380

Analysis of space heating and domestic hot water systems for energy-efficient residential buildings  

SciTech Connect (OSTI)

An analysis of the best ways of meeting the space heating and domestic hot water (DHW) needs of new energy-efficient houses with very low requirements for space heat is provided. The DHW load is about equal to the space heating load in such houses in northern climates. The equipment options which should be considered are discussed, including new equipment recently introduced in the market. It is concluded that the first consideration in selecting systems for energy-efficient houses should be identification of the air moving needs of the house for heat distribution, heat storage, ventilation, and ventilative cooling. This is followed, in order, by selection of the most appropriate distribution system, the heating appliances and controls, and the preferred energy source, gas, oil, or electricity.

Dennehy, G

1983-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "hot water heaters" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

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

SciTech Connect (OSTI)

Residential water heating is an important consideration in California?s building energy efficiency standard. Explicit treatment of ground-coupled hot water piping is one of several planned improvements to the standard. The properties of water, piping, insulation, backfill materials, concrete slabs, and soil, their interactions, and their variations with temperature and over time are important considerations in the required supporting analysis. Heat transfer algorithms and models devised for generalized, hot water distribution system, ground-source heat pump and ground heat exchanger, nuclear waste repository, buried oil pipeline, and underground electricity transmission cable applications can be adapted to the simulation of under-slab water piping. A numerical model that permits detailed examination of and broad variations in many inputs while employing a technique to conserve computer run time is recommended.

Warner, J.L.; Lutz, J.D.

2006-01-01T23:59:59.000Z

382

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

SciTech Connect (OSTI)

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

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

2009-05-01T23:59:59.000Z

383

A performance correlation of horizontal solar heaters  

E-Print Network [OSTI]

The solar heaters are shown tn Figure VI, page 31 30 Figure VI Horizontal Solar Heaters ~GLAZING AND FRAME ~~ POLYETHYLENE HEATERS THERMAL IN S U LA T I N 8 CELLS THERMOCOUPLES HORIZONTAL TABLE TOP THERMOCOUPLES COPPER LEADS TO CONTROL... The solar heaters are shown tn Figure VI, page 31 30 Figure VI Horizontal Solar Heaters ~GLAZING AND FRAME ~~ POLYETHYLENE HEATERS THERMAL IN S U LA T I N 8 CELLS THERMOCOUPLES HORIZONTAL TABLE TOP THERMOCOUPLES COPPER LEADS TO CONTROL...

Gopffarth, Wilford Hugo

2012-06-07T23:59:59.000Z

384

Water preheater system  

SciTech Connect (OSTI)

A heat transfer liquid collects heat in a solar collector and transfers the heat to water in a preheater heat exchanger. Use of a negative-pressure collector by means of an ejector and pressure relief valve allows inexpensive and readily available materials to be used in the collector. Preferably, the preheat heat exchanger is a converted gas hot water heater in which the heat transfer liquid is sprayed onto a portion of the storage tank and is collected in a reservoir. The negative-pressure solar collector can also be used to heat swimming pool water.

Dunstan, Ph.E.

1985-03-12T23:59:59.000Z

385

Heater head for Stirling engine  

SciTech Connect (OSTI)

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

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

1987-06-09T23:59:59.000Z

386

You Asked, Chu Answered | Department of Energy  

Energy Savers [EERE]

are the most traditional format), gas condensing water heaters, solar hot water heaters, heat pump water heaters, and on-demand water heaters. Each of these types of water heaters...

387

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

E-Print Network [OSTI]

Performance of a solid oxide fuel cell CHP system coupled with a hot water storage tank for single storage tank is studied. Thermal stratification in the tank increases the heat recovery performance of the residence. Two fuels are considered, namely syngas and natural gas. The tank model considers the temperature

Berning, Torsten

388

"Table HC12.8 Water Heating Characteristics by Midwest Census Region, 2005"  

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

8 Water Heating Characteristics by Midwest Census Region, 2005" 8 Water Heating Characteristics by Midwest Census Region, 2005" " Million U.S. Housing Units" ,,"Midwest Census Region" ,"U.S. Housing Units (millions)" ,,,"Census Division" ,,"Total Midwest" "Water Heating Characteristics",,,"East North Central","West North Central" "Total",111.1,25.6,17.7,7.9 "Number of Water Heaters" "1.",106.3,24.5,17.1,7.4 "2 or More",3.7,0.9,0.5,0.4 "Do Not Use Hot Water",1.1,"Q","Q","Q" "Housing Units Served by Main Water Heater" "One Housing Unit",99.7,23.5,16.2,7.3 "Two or More Housing Units",10.3,1.9,1.4,0.5 "Do Not Use Hot Water",1.1,"Q","Q","Q"

389

"Table HC14.8 Water Heating Characteristics by West Census Region, 2005"  

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

8 Water Heating Characteristics by West Census Region, 2005" 8 Water Heating Characteristics by West Census Region, 2005" " Million U.S. Housing Units" ,,"West Census Region" ,"U.S. Housing Units (millions)" ,,,"Census Division" ,,"Total West" "Water Heating Characteristics",,,"Mountain","Pacific" "Total",111.1,24.2,7.6,16.6 "Number of Water Heaters" "1.",106.3,23.2,7.1,16.1 "2 or More",3.7,1,0.4,0.6 "Do Not Use Hot Water",1.1,"Q","Q","N" "Housing Units Served by Main Water Heater" "One Housing Unit",99.7,21.9,7.1,14.8 "Two or More Housing Units",10.3,2.3,0.4,1.9 "Do Not Use Hot Water",1.1,"Q","Q","N"

390

Buoyancy driven flow in a hot water tank due to standby heat loss  

Science Journals Connector (OSTI)

Results of experimental and numerical investigations of thermal behavior in a vertical cylindrical hot water tank due to standby heat loss of the tank are presented. The effect of standby heat loss on temperature distribution in the tank is investigated experimentally on a slim 150l tank with a height to diameter ratio of 5. A tank with uniform temperatures and with thermal stratification is studied. A detailed computational fluid dynamics (CFD) model of the tank is developed to calculate the natural convection flow in the tank. The distribution of the heat loss coefficient for the different parts of the tank is measured by experiments and used as input to the CFD model. Water temperatures at different levels of the tank are measured and compared to CFD calculated temperatures. The investigations focus on validation of the CFD model and on understanding of the CFD calculations. The results show that the CFD model predicts satisfactorily water temperatures at different levels of the tank during cooling by standby heat loss. It is elucidated how the downward buoyancy driven flow along the tank wall is established by the heat loss from the tank sides and how the natural convection flow is influenced by water temperatures in the tank. When the temperature gradient in the tank is smaller than 2K/m, there is a downward fluid velocity of 0.0030.015m/s. With the presence of thermal stratification the buoyancy driven flow is significantly reduced. The dependence of the velocity magnitude of the downward flow on temperature gradient is not influenced by the tank volume and is only slightly influenced by the tank height to tank diameter ratio. Based on results of the CFD calculations, an equation is determined to calculate the magnitude of the buoyancy driven flow along the tank wall for a given temperature gradient in the tank.

Jianhua Fan; Simon Furbo

2012-01-01T23:59:59.000Z

391

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

SciTech Connect (OSTI)

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

Swift, T.N.

1996-09-01T23:59:59.000Z

392

An internal winding high temperature heater  

Science Journals Connector (OSTI)

An internal winding high temperature heater ... General principles are outlined for the construction of compact heaters that are suitable for heating small containers or reaction vessels at constant temperature and up to about 1000 C. ...

A. J. Delbouille; E. G. Derouane

1973-01-01T23:59:59.000Z

393

Energy conversion by an electric space heater  

Science Journals Connector (OSTI)

By means of measuring the temperature of the air blown by an electric space heater one can show students that the air is heated at a rate approximately equal to the rated wattage of the heater.

Willem H. van den Berg

1998-01-01T23:59:59.000Z

394

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

SciTech Connect (OSTI)

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

Ally, M.R.

2002-11-14T23:59:59.000Z

395

Hot gas defrosting method for air-source transcritical CO2 heat pump systems  

Science Journals Connector (OSTI)

Abstract When the air-source heat pump systems operate at low ambient temperatures in winter, frost forms on the coil surface of the outdoor evaporators. The frost substantially affects the operating performance and energy efficiency of heat pump systems, and hence periodic defrosting is essential. In this study, several defrost methods are presented to look for a candidate for air-source transcritical CO2 heat pump systems. The hot gas method proves to be more suitable among other defrosting methods for transcritical CO2 heat pump systems. To validate its reliability and rationality, an air-source transcritical CO2 heat pump water heater was built in a climatic laboratory. Through the experiments, the dynamic process of temperature and pressure were obtained to demonstrate the hot gas defrosting characteristics and system cycle. The hot gas defrosting cycle in the ph diagram was also validated by experiment results. Meanwhile, instant defrosting images were captured to record the dynamic defrosting process. The defrosting process lasted 10min and defrosting efficiency was 34.8% for hot gas defrosting method. The effectiveness and applicability of hot gas defrosting method for CO2 heat pump water heater is validated by experiments.

Bin Hu; Dongfang Yang; Feng Cao; Ziwen Xing; Jiyou Fei

2015-01-01T23:59:59.000Z

396

Oil and Gas Air Heaters  

E-Print Network [OSTI]

ICEBO2006, Shenzhen, China Heating technologies for energy efficiency Vol.III-1-2 Oil and Gas Air Heaters1 Guangxiao Kou Hanqing Wang Jiemin Zhou Doctoral Ph.D Ph.D Candidate Professor Professor Hunan University of Technology Hunan...

Kou, G.; Wang, H.; Zhou, J.

2006-01-01T23:59:59.000Z

397

"Table HC10.8 Water Heating Characteristics by U.S. Census Region, 2005"  

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

8 Water Heating Characteristics by U.S. Census Region, 2005" 8 Water Heating Characteristics by U.S. Census Region, 2005" " Million U.S. Housing Units" ,"Housing Units (millions)","U.S. Census Region" "Water Heating Characteristics",,"Northeast","Midwest","South","West" "Total",111.1,20.6,25.6,40.7,24.2 "Number of Water Heaters" "1.",106.3,19.6,24.5,39,23.2 "2 or More",3.7,0.3,0.9,1.5,1 "Do Not Use Hot Water",1.1,0.7,"Q","Q","Q" "Housing Units Served by Main Water Heater" "One Housing Unit",99.7,16.1,23.5,38.2,21.9 "Two or More Housing Units",10.3,3.7,1.9,2.4,2.3 "Do Not Use Hot Water",1.1,0.7,"Q","Q","Q"

398

Economic analysis of residential combined solar-heating and hot-water systems  

SciTech Connect (OSTI)

A brief description of a typical residential solar heating and hot water system and typical cost and performance information are presented. The monthly costs and savings of the typical system are discussed. The economic evaluation of solar residential systems is presented in increasing levels of complexity. Utilizing a typical system, the effective interest rate that the purchaser of a system would receive on money invested is shown for all regions of the country. The importance of numerous variables that can make a significant difference on the economics of the system is described so that it can be determined whether the typical system economics are compatible with the particular situation. Methods for calculating the payback period for any non-typical solar system are described. This calculated payback period is then shown to be related to the effective interest rate that the purchaser of the system would receive for a typical economic condition. A nomagraph is presented that performs this calculation. Finally, a method is presented to calculate the effective interest rate that the solar system would provide. It is shown how to develop the relationship between payback period and the effective interest rate for any economic scenario.

None

1980-09-23T23:59:59.000Z

399

Economic analysis of residential and commercial solar heating and hot water systems  

SciTech Connect (OSTI)

The economic evaluation of residential and commercial solar heating and hot water systems is presented. Commercial systems are further categorized as taxable and non-taxable applications in recognition of the effect of Federal and state tax incentives and disincentives for solar energy systems. The economic evaluation of each system type is performed utilizing two distinct methods of analysis. The economic analyses follow a brief description of each method. The Cash Flow Analyses provide insight into the short and long term effects of a solar investment on the budget of the solar energy system purchaser while the Return-On-Investment Analyses provide an appropriate method of measuring the attractiveness of a solar investment in comparison to alternative long term investments. Utilizing a typical system for each system type and application the Cash Flow and Return-On-Investment Analyses are presented. The sensitivity of the results on the numerous variables in the economic analyses is shown. Maps provide a graphic display of the results of the economic analysis of typical systems using Federal and state tax credits and average state conventional fuel costs for each system type. Conclusions based on the economic analyses performed and a thorough discussion of the present status of the data required for the complete economic evaluation of solar energy systems are summarized. The current availability and limitations of data and requirements for further work in this area are discussed.

None

1980-09-23T23:59:59.000Z

400

Low-Cost Solar Domestic Hot Water Systems for Mild Climates  

SciTech Connect (OSTI)

In FY99, Solar Heating and Lighting set the goal to reduce the life-cycle cost of saved-energy for solar domestic hot water (SDHW) systems in mild climates by 50%, primarily through use of polymer technology. Two industry teams (Davis Energy Group/SunEarth (DEG/SE) and FAFCO) have been developing un-pressurized integral-collector-storage (ICS) systems having load-side heat exchangers, and began field-testing in FY04. DEG/SE?s ICS has a rotomolded tank and thermoformed glazing. Based upon manufacturing issues, costs, and poor performance, the FAFCO team changed direction in late FY04 from an un-pressurized ICS to a direct thermosiphon design based upon use of pool collectors. Support for the teams is being provided for materials testing, modeling, and system testing. New ICS system models have been produced to model the new systems. A new ICS rating procedure for the ICS systems is undergoing testing and validation. Pipe freezing, freeze protection valves, and overheating have been tested and analyzed.

Burch, J.; Christensen, C.; Merrigan, T.; Hewett, R.; Jorgensen, G.

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hot water heaters" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Welding shield for coupling heaters  

DOE Patents [OSTI]

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

Menotti, James Louis (Dickinson, TX)

2010-03-09T23:59:59.000Z

402

Regenerative Boiler Feedwater Heater Economics  

E-Print Network [OSTI]

REGENERATIVE BOILER FEEDWATER HEATER ECONOMICS William L. Viar, PE waterland, Viar & Associates, Inc. Wilmington, Delaware ABSTRACT The basic Rankine Vapor Cycle has been r,~peatedly modified to improve efficiency. Always, the objective....g., first and second laws of thermodynamics) have improved and contributed to the evolution. The demands for larger systems with higher performance have been persistent. Progress i ve changes in the app1icat ion of the fundamental Rankine cycle have...

Viar, W. L.

403

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

SciTech Connect (OSTI)

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

Not Available

1980-02-01T23:59:59.000Z

404

Impact of a solar domestic hot water demand-side management program on an electric utility and its customers  

SciTech Connect (OSTI)

A methodology to assess the economic and environmental impacts of a large scale implementation of solar domestic hot water (SDHW) systems is developed. Energy, emission and demand reductions and their respective savings are quantified. It is shown that, on average, an SDHW system provides an energy reduction of about 3200 kWH, avoided emissions of about 2 tons and a capacity contribution of 0.7 kW to a typical Wisconsin utility that installs 5000 SDHW system. The annual savings from these reductions to utility is {dollar_sign}385,000, providing a return on an investment of over 20{percent}. It is shown that, on average, a consumer will save {dollar_sign}211 annually in hot water heating bills. 8 refs., 7 figs.

Trzeniewski, J.; Mitchell, J.W.; Klein, S.A.; Beckman, W.A.

1996-09-01T23:59:59.000Z

405

Performance improvement of direct- and indirect-fired heaters  

SciTech Connect (OSTI)

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

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

1988-08-01T23:59:59.000Z

406

Adjusting alloy compositions for selected properties in temperature limited heaters  

DOE Patents [OSTI]

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

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

2010-03-23T23:59:59.000Z

407

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

SciTech Connect (OSTI)

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

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

2011-07-01T23:59:59.000Z

408

Materials performance in fluidized-bed air heaters  

SciTech Connect (OSTI)

Development of cogeneration systems that involve combustion of coal in a fluidized bed and use of air heaters to generate hot air for turbine systems has been in progress for a number of years. The US Department of Energy (DOE) sponsored the Atmospheric Fluidized-Bed Cogeneration Air Heater Experiment (ACAHE) to assess the performance of various heat exchanger materials and establish confidence in the resultant designs of fluidized-bed-combustion air heater systems. Westinghouse Electric Corporation, in association with Babcock & Wilcox, Foster Wheeler, and ABB/Combustion Engineering, prepared specifications and hardware for the ACAHE. Argonne National Laboratory, through a contract with the Rocketdyne Division of Rockwell International, conducted tests in the DOE 1.8 {times} 1.8 m atmospheric fluidized-bed combustion facility in El Segundo, California. This paper presents an assessment of the materials performance in fluidized bed environments and examines guidelines for materials selection on the basis of corrosion resistance in air and in combustion environments, mechanical properties, fabricability/thermal stability, and cost.

Natesan, K.; Podolski, W.

1991-12-01T23:59:59.000Z

409

Materials performance in fluidized-bed air heaters  

SciTech Connect (OSTI)

Development of cogeneration systems that involve combustion of coal in a fluidized bed and use of air heaters to generate hot air for turbine systems has been in progress for a number of years. The US Department of Energy (DOE) sponsored the Atmospheric Fluidized-Bed Cogeneration Air Heater Experiment (ACAHE) to assess the performance of various heat exchanger materials and establish confidence in the resultant designs of fluidized-bed-combustion air heater systems. Westinghouse Electric Corporation, in association with Babcock Wilcox, Foster Wheeler, and ABB/Combustion Engineering, prepared specifications and hardware for the ACAHE. Argonne National Laboratory, through a contract with the Rocketdyne Division of Rockwell International, conducted tests in the DOE 1.8 {times} 1.8 m atmospheric fluidized-bed combustion facility in El Segundo, California. This paper presents an assessment of the materials performance in fluidized bed environments and examines guidelines for materials selection on the basis of corrosion resistance in air and in combustion environments, mechanical properties, fabricability/thermal stability, and cost.

Natesan, K.; Podolski, W.

1991-12-01T23:59:59.000Z

410

Lakeland Electric - Solar Water Heating Program | Department of Energy  

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

Lakeland Electric - Solar Water Heating Program Lakeland Electric - Solar Water Heating Program Lakeland Electric - Solar Water Heating Program < Back Eligibility Residential Savings Category Heating & Cooling Solar Water Heating Program Info Start Date June 2010 State Florida Program Type Other Incentive Provider Lakeland Electric Lakeland Electric, a municipal utility in Florida, is the nation's first utility to offer solar-heated domestic hot water on a "pay-for-energy" basis. The utility has contracted with a solar equipment vendor, Regenesis Lakeland, LLC, to install solar water heaters on participating customers' homes. Lakeland Electric bills the customer $34.95 per month regardless of use. Each solar heater is metered and equipped with a heating element timer as a demand management feature. The $34.95 monthly charge is a bulk energy

411

CO2 Conversion By Nano Heaters  

SciTech Connect (OSTI)

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

None

2014-03-11T23:59:59.000Z

412

CO2 Conversion By Nano Heaters  

ScienceCinema (OSTI)

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

None

2014-06-23T23:59:59.000Z

413

Parallel heater system for subsurface formations  

DOE Patents [OSTI]

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

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

2011-10-25T23:59:59.000Z

414

Combustion heater for oil shale  

DOE Patents [OSTI]

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

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

1983-09-21T23:59:59.000Z

415

Combustion heater for oil shale  

DOE Patents [OSTI]

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

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

1985-01-01T23:59:59.000Z

416

A Study on the Failure of Industrial Electric Heater  

E-Print Network [OSTI]

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

Chyu, M. C.

417

Field Demonstration of High Efficiency Gas Heaters  

Broader source: Energy.gov [DOE]

For many buildings that do not require space cooling, non-centralized equipment such as unit heaters provide space heating to building occupants. Unit heaters are a major source of energy use nationally, accounting for nearly 18% of primary space heating energy use for commercial buildings, and most prominently appear in warehouses, distribution centers, loading docks, etc.

418

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

E-Print Network [OSTI]

understanding the waste of energy and water in residentialStudy to Determine Waste of Water and Energy in ResidentialStudy to Determine Waste of Water and Energy in Residential

Lutz, Jim

2012-01-01T23:59:59.000Z

419

Low-Cost Solar Water Heating Research and Development Roadmap  

SciTech Connect (OSTI)

The market environment for solar water heating technology has changed substantially with the successful introduction of heat pump water heaters (HPWHs). The addition of this energy-efficient technology to the market increases direct competition with solar water heaters (SWHs) for available energy savings. It is therefore essential to understand which segment of the market is best suited for HPWHs and focus the development of innovative, low-cost SWHs in the market segment where the largest opportunities exist. To evaluate cost and performance tradeoffs between high performance hot water heating systems, annual energy simulations were run using the program, TRNSYS, and analysis was performed to compare the energy savings associated with HPWH and SWH technologies to conventional methods of water heating.

Hudon, K.; Merrigan, T.; Burch, J.; Maguire, J.

2012-08-01T23:59:59.000Z

420

Subsurface connection methods for subsurface heaters  

DOE Patents [OSTI]

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

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

2010-12-28T23:59:59.000Z

Note: This page contains sample records for the topic "hot water heaters" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

THERMOSIPHON WATER HEATERS WITH HEAT EXCHANGERS  

E-Print Network [OSTI]

communications). Heat transfer fluid is 60% o-o1vco1 bycharacteristics, heat transfer fluids, flow resistances,of a non- freezing heat transfer fluid circulating in a loop

Mertol, Atila

2012-01-01T23:59:59.000Z

422

Field Monitoring Protocol: Heat Pump Water Heaters  

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

SHR Sensible heat ratio T&RH Temperature and relative humidity TC Thermocouple UA Heat loss coefficient v Table of Contents List of Figures ......

423

Heat Pump Water Heater Performance in  

Broader source: Energy.gov [DOE]

This presentation was delivered at the U.S. Department of Energy Building America Technical Update meeting on April 29-30, 2013, in Denver, Colorado.

424

Experiments on adding a surfactant to water drops boiling on a hot surface  

Science Journals Connector (OSTI)

...surfactant to boiling water drops 675 done with three...0 ppm (i.e. pure water), 100 ppm and 1000...and ambient pressure (atmospheric). 2. Experimental...surfactant to 800 g of water. The water was distilled...solution in the droplet generator the syringe, needle...

1997-01-01T23:59:59.000Z

425

Performance of an experimental ground-coupled heat pump system for heating, cooling and domestic hot-water operation  

Science Journals Connector (OSTI)

Abstract The ground-coupled heat pump (GCHP) system is a type of renewable energy technology providing space heating and cooling as well as domestic hot water. However, experimental studies on GCHP systems are still insufficient. This paper first presents an energy-operational optimisation device for a GCHP system involving insertion of a buffer tank between the heat pump unit and fan coil units and consumer supply using quantitative adjustment with a variable speed circulating pump. Then, the experimental measurements are used to test the performance of the GCHP system in different operating modes. The main performance parameters (energy efficiency and CO2 emissions) are obtained for one month of operation using both classical and optimised adjustment of the GCHP system, and a comparative analysis of these performances is performed. In addition, using TRNSYS (Transient Systems Simulation) software, two simulation models of thermal energy consumption in heating, cooling and domestic hot-water operation are developed. Finally, the simulations obtained using TRNSYS are analysed and compared to experimental data, resulting in good agreement and thus the simulation models are validated.

Calin Sebarchievici; Ioan Sarbu

2015-01-01T23:59:59.000Z

426

In-situ parameter estimation for solar domestic hot water heating systems components. Final report, June 1995--May 1996  

SciTech Connect (OSTI)

Three different solar domestic hot water systems are being tested at the Colorado State University Solar Energy Applications Laboratory; an unpressurized drain-back system with a load side heat exchanger, an integral collector storage system, and an ultra low flow natural convection heat exchanger system. The systems are fully instrumented to yield data appropriate for in-depth analyses of performance. The level of detail allows the observation of the performance of the total system and the performance of the individual components. This report evaluates the systems based on in-situ experimental data and compares the performances with simulated performances. The verification of the simulations aids in the rating procedure. The whole system performance measurements are also used to analyze the performance of individual components of a solar hot water system and to develop improved component models. The data are analyzed extensively and the parameters needed to characterize the systems fully are developed. Also resulting from this indepth analysis are suggested design improvements wither to the systems or the system components.

Smith, T.R.

1997-03-01T23:59:59.000Z

427

Issue #4: Are High Efficiency Hot Water Heating Systems Worth the Cost?  

Office of Energy Efficiency and Renewable Energy (EERE)

What are realistic energy savings associated with the latest advanced and forthcoming water heating technologies and are they cost effective?

428

Grid-Interactive Renewable Water Heating Economic and Environmental Value  

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

1 1 Grid-Interactive Renewable Water Heating Economic and Environmental Value Grid-interactive renewable water heaters have smart controls that quickly change their charge rate and charge level, factoring in renewable generation and other critical needs of the grid; thereby significantly reducing carbon emissions and bringing a new dimension of conservation and efficiency to the electric grid. The Steffes grid-interactive renewable water heater controller provides utilities with an affordable and effective way to integrate renewable generation into the grid while providing uninterrupted hot water to the consumer. In recent years, many states have set Renewable Portfolio Standards (RPS) to reduce the need for traditional fossil fuel-based power generation, thereby improving our environment and decreasing

429

"Table HC13.8 Water Heating Characteristics by South Census Region, 2005"  

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

8 Water Heating Characteristics by South Census Region, 2005" 8 Water Heating Characteristics by South Census Region, 2005" " Million U.S. Housing Units" ,,"South Census Region" ,"U.S. Housing Units (millions)" ,,,"Census Division" ,,"Total South" "Water Heating Characteristics",,,"South Atlantic","East South Central","West South Central" "Total",111.1,40.7,21.7,6.9,12.1 "Number of Water Heaters" "1.",106.3,39,21.1,6.6,11.3 "2 or More",3.7,1.5,0.5,0.3,0.7 "Do Not Use Hot Water",1.1,"Q","Q","N","Q" "Housing Units Served by Main Water Heater" "One Housing Unit",99.7,38.2,20.2,6.7,11.3 "Two or More Housing Units",10.3,2.4,1.5,0.2,0.7

430

Heater head for a Stirling engine  

SciTech Connect (OSTI)

A heater head is described for a compound Stirling engine modules, each including a displacer cylinder coaxially aligned with the displacer cylinder of the other of the engine modules, a displacer piston mounted for reciprocation in the displacer cylinder.

Darooka, D.K.

1988-09-06T23:59:59.000Z

431

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

Broader source: Energy.gov [DOE]

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

432

Varying properties along lengths of temperature limited heaters  

DOE Patents [OSTI]

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

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

2011-07-26T23:59:59.000Z

433

Diesel particulate filter with zoned resistive heater  

DOE Patents [OSTI]

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

Gonze, Eugene V [Pinckney, MI

2011-03-08T23:59:59.000Z

434

Reducing NOx in Fired Heaters and Boilers  

E-Print Network [OSTI]

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

Garg, A.

435

A Precise Water Abundance Measurement for the Hot Jupiter WASP-43b  

E-Print Network [OSTI]

The water abundance in a planetary atmosphere provides a key constraint on the planet's primordial origins because water ice is expected to play an important role in the core accretion model of planet formation. However, the water content of the Solar System giant planets is not well known because water is sequestered in clouds deep in their atmospheres. By contrast, short-period exoplanets have such high temperatures that their atmospheres have water in the gas phase, making it possible to measure the water abundance for these objects. We present a precise determination of the water abundance in the atmosphere of the 2 $M_\\mathrm{Jup}$ short-period exoplanet WASP-43b based on thermal emission and transmission spectroscopy measurements obtained with the Hubble Space Telescope. We find the water content is consistent with the value expected in a solar composition gas at planetary temperatures (0.4-3.5x solar at 1 $\\sigma$ confidence). The metallicity of WASP-43b's atmosphere suggested by this result extends th...

Kreidberg, Laura; Dsert, Jean-Michel; Line, Michael R; Fortney, Jonathan J; Madhusudhan, Nikku; Stevenson, Kevin B; Showman, Adam P; Charbonneau, David; McCullough, Peter R; Seager, Sara; Burrows, Adam; Henry, Gregory W; Williamson, Michael; Kataria, Tiffany; Homeier, Derek

2014-01-01T23:59:59.000Z

436

Performance of a Hot-Dry Climate Whole-House Retrofit  

SciTech Connect (OSTI)

The Stockton house retrofit is a two-story tudor style single family deep retrofit in the hot-dry climate of Stockton, CA. The home is representative of a deep retrofit option of the scaled home energy upgrade packages offered to targeted neighborhoods under the pilot Large-Scale Retrofit Program (LSRP) administered by the Alliance for Residential Building Innovation (ARBI). Deep retrofit packages expand on the standard package by adding HVAC, water heater and window upgrades to the ducting, attic and floor insulation, domestic hot water insulation, envelope sealing, lighting and ventilation upgrades. Site energy savings with the deep retrofit were 23% compared to the pre-retrofit case, and 15% higher than the savings estimated for the standard retrofit package. Energy savings were largely a result of the water heater upgrade, and a combination of the envelope sealing, insulation and HVAC upgrade. The HVAC system was of higher efficiency than the building code standard. Overall the financed retrofit would have been more cost effective had a less expensive HVAC system been selected and barriers to wall insulation remedied. The homeowner experienced improved comfort throughout the monitored period and was satisfied with the resulting utility bill savings.

Weitzel, E.; German, A.; Porse, E.

2014-06-01T23:59:59.000Z

437

NREL and Industry Advance Low-Cost Solar Water Heating R&D (Fact Sheet)  

SciTech Connect (OSTI)

NREL and Rhotech develop cost-effective solar water heating prototype to rival natural gas water heater market.

Not Available

2014-08-01T23:59:59.000Z

438

Combined heat recovery and make-up water heating system  

SciTech Connect (OSTI)

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

Kim, S.Y.

1988-05-24T23:59:59.000Z

439

Performance Evaluation of Hot Water Efficiency Plumbing System Using Thermal Valve  

E-Print Network [OSTI]

In Korea two popular water distribution systemsthe branch type and the separate type systemshave serious drawbacks. The branch type suffers from temperature instability while the separate type suffers from excessive piping. Neither of them re...

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

440

Present research within the EC on the application of solar energy for hot water production  

Science Journals Connector (OSTI)

In this chapter, an overview is given of some of the research that has been done on solar water heating applications, introduced in the preceding chapter. This material is based on information provided by CEC ...

V. Goedseels; E. Van Der Stuyft

1986-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hot water heaters" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Analysis of recoverable waste heat of circulating cooling water in hot-stamping power system  

Science Journals Connector (OSTI)

This article studies the possibility of using heat pump instead of cooling tower to decrease temperature and recover waste heat of circulating cooling water of power system. Making use of heat transfer theory ......

Panpan Qin; Hui Chen; Lili Chen; Chong Wang

2013-08-01T23:59:59.000Z

442

"Table HC15.8 Water Heating Characteristics by Four Most Populated States, 2005"  

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

8 Water Heating Characteristics by Four Most Populated States, 2005" 8 Water Heating Characteristics by Four Most Populated States, 2005" " Million U.S. Housing Units" ,"Housing Units (millions)","Four Most Populated States" "Water Heating Characteristics",,"New York","Florida","Texas","California" "Total",111.1,7.1,7,8,12.1 "Number of Water Heaters" "1.",106.3,6.5,6.9,7.4,11.7 "2 or More",3.7,"Q","Q",0.5,0.4 "Do Not Use Hot Water",1.1,0.5,"N","Q","N" "Housing Units Served by Main Water Heater" "One Housing Unit",99.7,4.3,6.8,7.4,10.6 "Two or More Housing Units",10.3,2.3,"Q",0.5,1.5

443

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

SciTech Connect (OSTI)

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

McCoskey, Jacob K.

2014-01-22T23:59:59.000Z

444

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

SciTech Connect (OSTI)

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

Chad Bowers; Michael Petersen; Stefan Elbel; Pega Hrnjak

2012-04-01T23:59:59.000Z

445

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

SciTech Connect (OSTI)

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

None

1980-11-01T23:59:59.000Z

446

Temperature limited heaters using phase transformation of ferromagnetic material  

DOE Patents [OSTI]

Systems, methods, and heaters for treating a subsurface formation are described herein. Systems and methods for making heaters are described herein. At least one heater includes a ferromagnetic conductor and an electrical conductor. The electrical conductor is electrically coupled to the ferromagnetic conductor. The heater provides a first amount of heat at a lower temperature. The heater may provide a second reduced amount of heat when the heater reaches a selected temperature, or enters a selected temperature range, at which the ferromagnetic conductor undergoes a phase transformation.

Vitek, John Michael [Oak Ridge, TN; Brady, Michael Patrick [Oak Ridge, TN

2009-10-06T23:59:59.000Z

447

MHD oxidant intermediate temperature ceramic heater study. Final report  

SciTech Connect (OSTI)

The use of three types of directly fired ceramic heaters for preheating oxygen enriched air to an intermediate temperature of 1144K was investigated. The three types of ceramic heaters are: (1) a fixed bed, periodic flow ceramic brick regenerative heater (2) a ceramic pebble regenerative heater. The heater design, performance and operating characteristics under conditions in which the particulate matter is not solidified are evaluated. A comparison and overall evaluation of the three types of ceramic heaters and temperature range determination at which the particulate matter in the MHD exhaust gas is estimated to be a dry powder are presented.

Carlson, A.W.; Chait, I.L.; Saari, D.P.; Marksberry, C.L.

1981-09-01T23:59:59.000Z

448

Water-Heating Dehumidifier  

Energy Innovation Portal (Marketing Summaries) [EERE]

A small appliance developed at ORNL dehumidifies air and then recycles heat to warm water in a water heater. The device circulates cool, dry air in summer and warm air in winter. In addition, the invention can cut the energy required to run a conventional water heater by an estimated 50 per cent....

2010-12-08T23:59:59.000Z

449

Effect of Methanol on the Liquefaction Reaction of Biomass in Hot Compressed Water under Microwave Energy  

Science Journals Connector (OSTI)

It was found that 5-hydroxymethylfurfural (HMF) and levulinic acid are the dominate products using pure water as the liquefying agent. ... As an efficient method for biomass conversion, a thermal chemical reaction, such as liquefaction, has been considered as a potential pathway for production of biofuels and chemicals. ... It is perfectly suitable for these products to be used as potential platform chemicals, such as polyols, in the polyurethane industry because the appropriate viscosity and hydroxyl number of the final products can be obtained by a slight modification using ethylene oxide and propylene oxide. ...

Junming Xu; Jianchun Jiang; Chung-yun Hse; Todd F. Shupe

2013-07-22T23:59:59.000Z

450

Combination fence and solar heater for swimming pools  

SciTech Connect (OSTI)

A combination fence and solar heater for swimming pools comprises a fence shaped for extending about the periphery of the pool to restrict ingress and egress therefrom. A tubular heat exchanger is formed in at least one section of the fence, includes an exterior surface adapted to absorb solar energy, and communicates with the water in the swimming pool. The number of heat exchanger fence sections can be varied in accordance with the climate in which the pool is located. A pump flows the water in the swimming pool through the heat exchanger fence sections during daylight hours, thereby simultaneously heating the water in the pool, and providing an attractive and protective safety barrier about the swimming pool.

Divine, D.L.

1981-07-28T23:59:59.000Z

451

Design, Stress Analysis and Operating Experience in Feedwater Heaters  

E-Print Network [OSTI]

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

Singh, K. P.; Libs, T.

1980-01-01T23:59:59.000Z

452

Building America Case Study: Performance of a Hot-Dry Climate Whole House Retrofit, Stockton, California (Fact Sheet)  

SciTech Connect (OSTI)

The Stockton house retrofit is a two-story tudor style single family deep retrofit in the hot-dry climate of Stockton, CA. The home is representative of a deep retrofit option of the scaled home energy upgrade packages offered to targeted neighborhoods under the pilot Large-Scale Retrofit Program (LSRP) administered by the Alliance for Residential Building Innovation (ARBI). Deep retrofit packages expand on the standard package by adding HVAC, water heater and window upgrades to the ducting, attic and floor insulation, domestic hot water insulation, envelope sealing, lighting and ventilation upgrades. Site energy savings with the deep retrofit were 23% compared to the pre-retrofit case, and 15% higher than the savings estimated for the standard retrofit package. Energy savings were largely a result of the water heater upgrade, and a combination of the envelope sealing, insulation and HVAC upgrade. The HVAC system was of higher efficiency than the building code standard. Overall the financed retrofit would have been more cost effective had a less expensive HVAC system been selected and barriers to wall insulation remedied. The homeowner experienced improved comfort throughout the monitored period and was satisfied with the resulting utility bill savings.

ARBI

2014-09-01T23:59:59.000Z

453

Chapter 5 - Solar Water-Heating Systems  

Science Journals Connector (OSTI)

Abstract Chapter 5 is on solar water-heating systems. Both passive and active systems are described. Passive systems include thermosiphon and integrated collector storage systems. The former include theoretical performance of thermosiphon solar water heaters, reverse circulation in thermosiphon systems, vertical against horizontal tank configurations, freeze protection, and tracking thermosiphons. Subsequently, active systems are described, which include direct circulation systems, indirect water-heating systems, air water-heating systems, heat pump systems and pool heating systems, which include the analysis of various heat losses like evaporation, radiation, convection heat losses, make-up water load, and solar radiation-heat gain. Then the characteristics and thermal analysis of heat storage systems for both water and air systems are presented. The module and array design methods are then described and include the effects of shading, thermal expansion, galvanic corrosion, array sizing, heat exchangers, pipe and duct losses, partially shaded collectors and over-temperature protectionfollowed by an analysis of the characteristics of differential thermostats. Finally, methods to calculate the hot water demand are given as well as a review of international standards used to evaluate the solar water heaters performance. The chapter includes also simple system models and practical considerations for the setup of solar water-heating systems, which include: pipes, supports and insulation; pumps; valves and instrumentation.

Soteris A. Kalogirou

2014-01-01T23:59:59.000Z

454

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

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

U.S. Marine Corps Base Camp Pendleton, U.S. Marine Corps Base Camp Pendleton, covering 125,000 acres including 17 miles of Southern-California coastline, is the largest expeditionary training facility on the West Coast. More than 41,500 marines and family members call the base home, which reaches a daytime population of approximately 100,000. In fiscal year 2007, Camp Pendleton saved energy and money and reduced greenhouse gas (GHG) emissions through solar hot water (SHW) and photovoltaic (PV) arrays. The base implemented two integrated solar thermal/PV systems at its 53 Area and 62 Area training pools. The projects demonstrate Camp Pendleton's continuing commitment to energy conservation while helping meet Federal requirements for on-site renewable energy and solar hot water generation.

455

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

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

U.S. Marine Corps Base Camp Pendleton, U.S. Marine Corps Base Camp Pendleton, covering 125,000 acres including 17 miles of Southern-California coastline, is the largest expeditionary training facility on the West Coast. More than 41,500 marines and family members call the base home, which reaches a daytime population of approximately 100,000. In fiscal year 2007, Camp Pendleton saved energy and money and reduced greenhouse gas (GHG) emissions through solar hot water (SHW) and photovoltaic (PV) arrays. The base implemented two integrated solar thermal/PV systems at its 53 Area and 62 Area training pools. The projects demonstrate Camp Pendleton's continuing commitment to energy conservation while helping meet Federal requirements for on-site renewable energy and solar hot water generation.

456

Fuzzy control model and simulation of supply air system in a test rig of low-temperature hot-water radiator system  

Science Journals Connector (OSTI)

This paper proposes a typical multi-variable, large time delay and nonlinear system, self-extracting rules fuzzy control (SERFC) method to maintain a stable temperature value in a built environment chamber with supply air system and hot-water system. The parameters of the transfer functions in every control loop were identified by experimental data in a format of time sequences obtained from the experiment of dynamical responding performance. Fuzzy control simulations were implemented based on adjustment of the supply air system and hot-water system by SERFC. The simulation results show that SERFC for environment chamber has satisfied performance. There is no higher overshoot and stable error. The work presented in here can be used to deal with those complex thermal processes with difficulties in modeling of fuzzy control rules and provide a foundation for further application of fuzzy control in HVAC system.

Zhen Lu; Jili Zhang; Yongpan Chen; Tianyi Zhao; Hui Liu

2010-01-01T23:59:59.000Z

457

Eleana near-surface heater experiment final report  

SciTech Connect (OSTI)

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

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

1981-04-01T23:59:59.000Z

458

Advanced refinery process heater. Annual report, October 1983-September 1984  

SciTech Connect (OSTI)

Activity during the first year of this project has focused on the conceptual design of the prototype heater and on the development of a custom-designed Pyrocore ceramic fiber burner for the heater. Three different concepts for the prototype heater have been produced, one of them modeled after a vertical cylindrical design and the other two resembling box-type heaters. All three concepts take advantage of the Pyrocore burner's flameless characteristic to make the heater more compact. Concerning the development of the burners, two different geometries were considered. Subscale prototypes of each type of burner were fabricated and tested. The more successful burners used actively-cooled edges to maintain the integrity of the gas-tight seals. Work on this project in the second year will include the design and fabrication of the 10 MMBtu/hr prototype heater, using the most feasible heater and burner designs developed during the first year.

Schreiber, R.J.; Gotterba, J.A.; Minden, A.C.

1984-10-01T23:59:59.000Z

459

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

SciTech Connect (OSTI)

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

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

2012-06-01T23:59:59.000Z

460

Lid heater for glass melter  

DOE Patents [OSTI]

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

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

1993-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hot water heaters" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

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

SciTech Connect (OSTI)

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

Kauffman, D.; Houghton, A.V.

1980-12-31T23:59:59.000Z

462

Cryostat including heater to heat a target  

DOE Patents [OSTI]

A cryostat is provided which comprises a vacuum vessel; a target disposed within the vacuum vessel; a heat sink disposed within the vacuum vessel for absorbing heat from the detector; a cooling mechanism for cooling the heat sink; a cryoabsorption mechanism for cryoabsorbing residual gas within the vacuum vessel; and a heater for maintaining the target above a temperature at which the residual gas is cryoabsorbed in the course of cryoabsorption of the residual gas by the cryoabsorption mechanism. 2 figs.

Pehl, R.H.; Madden, N.W.; Malone, D.F.

1990-09-11T23:59:59.000Z

463

Enhanced heat transfer tubes for film absorbers of absorption chiller/heater  

SciTech Connect (OSTI)

Absorption chiller/heaters using non-CFC refrigerants are attracting attention as environmentally friendly energy systems. As the refrigerant/absorbent pair, the water/lithium bromide aqueous solution pair is preferably used for most absorption chiller/heaters in Japan. Absorption chiller/heaters, mainly used as water chillers and air-conditioners, are commercially available at least for unit cooling capacities above 60 kW. In absorption chiller/heaters, the absorber must be made compact, because the absorber has the largest heat transfer area of the four primary heat exchangers in the system: the evaporator, absorber, regenerator and condenser. Although a great amount of information is available on the evaporator and condenser, the same type of information concerning the absorber is lacking. This paper introduces two kinds of double fluted tubes called Arm tubs and Floral tubes for film absorbers. Arm tubes are manufactured using a two-pass drawbench process, while Floral tubes are made using a single pass drawbench process. The experiments using a lithium bromide aqueous solution with the addition of 250 ppm n-octyl alcohol as the surfactant showed that Arm tubes and Floral tubes had about 40% higher heat transfer performance than plain tubes. Therefore, Floral tubes are expected to realize a high performance at low cost. Furthermore, the optimization of the number of grooves on the outside of the tubes is also described here.

Sasaki, Naoe; Nosetani, Tadashi [Sumitomo Light Metal Industry, Ltd., Nagoya, Aichi (Japan); Furukawa, Masahiro; Kaneko, Toshiyuki [Sanyo Electric Co., Ltd., Ora, Gunma (Japan). Commercial Air-Conditioning Div.

1995-12-31T23:59:59.000Z

464

Hot Springs | Open Energy Information  

Open Energy Info (EERE)

Springs Springs Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Hot Springs Dictionary.png Hot Springs: A naturally occurring spring of hot water, heated by geothermal processes in the subsurface, and typically having a temperature greater than 37°C. Other definitions:Wikipedia Reegle Modern Geothermal Features Typical list of modern geothermal features Hot Springs Fumaroles Warm or Steaming Ground Mudpots, Mud Pools, or Mud Volcanoes Geysers Blind Geothermal System Mammoth Hot Springs at Yellowstone National Park (reference: http://www.hsd3.org/HighSchool/Teachers/MATTIXS/Mattix%20homepage/studentwork/Laura%20Cornelisse%27s%20Web%20Page/Yellowstone%20National%20Park.htm) Hot springs occur where geothermally heated waters naturally flow out of the surface of the Earth. Hot springs may deposit minerals and spectacular

465

Building Technologies Office: Open-Standard Wireless Controllers for Water  

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

Open-Standard Wireless Open-Standard Wireless Controllers for Water Heaters Research Project to someone by E-mail Share Building Technologies Office: Open-Standard Wireless Controllers for Water Heaters Research Project on Facebook Tweet about Building Technologies Office: Open-Standard Wireless Controllers for Water Heaters Research Project on Twitter Bookmark Building Technologies Office: Open-Standard Wireless Controllers for Water Heaters Research Project on Google Bookmark Building Technologies Office: Open-Standard Wireless Controllers for Water Heaters Research Project on Delicious Rank Building Technologies Office: Open-Standard Wireless Controllers for Water Heaters Research Project on Digg Find More places to share Building Technologies Office: Open-Standard Wireless Controllers for Water Heaters Research Project on

466

Multi-step heater deployment in a subsurface formation  

DOE Patents [OSTI]

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

Mason, Stanley Leroy (Allen, TX)

2012-04-03T23:59:59.000Z

467

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

DOE Patents [OSTI]

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

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

2010-11-09T23:59:59.000Z

468

Advanced refinery process heater. Final report, (October 1983-September 1988)  

SciTech Connect (OSTI)

A prototype refinery process heater was designed, built and successfully tested, demonstrating the improvements available to heater design through the use of Zone-Controlled Pyrocore radiant gas burners. The 10 MMBtu/hr rated heater released 17 ppm NOx (corrected to 3% oxygen) under full load operation, the lowest NOx emissions technically and commercially achieved in this type of equipment without the use of post-combustion flue-gas processing. Operating with 400F combustion air preheat and a 500F process fluid outlet temperature, the heater achieved overall thermal efficiencies of 92.8% on a LHV basis due in part to the significantly improved performance of the radiant heat exchange section. The radiant burners used in the heater have been proven in performance and reliability, and have also been shown to be applicable to both new heater designs and retrofits into existing heaters. The improved radiant performance of the heater and the use of 'flameless' radiant burners eliminates tube burn-out failures in both the radiant and convective tube coils, further improving the reliability of equipment based on this design. Three separate U.S. Patents have been issued covering the heater design and the use of Zone-Controlled Pyrocore burners in this application.

Minden, A.C.; Buckley, G.G.

1989-04-01T23:59:59.000Z

469

NREL and Industry Advance Low-Cost Solar Water Heating R&D (Fact...  

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

and Rhotech develop cost-effective solar water heating prototype to rival natural gas water heaters. Water heating energy use represents the second largest energy demand for homes...

470

Slurry fired heater cold-flow modelling  

SciTech Connect (OSTI)

This report summarizes the experimental and theoretical work leading to the scale-up of the SRC-I Demonstration Plant slurry fired heater. The scale-up involved a theoretical model using empirical relations in the derivation, and employed variables such as flow conditions, liquid viscosity, and slug frequency. Such variables have been shown to affect the heat transfer characteristics ofthe system. The model assumes that, if all other variables remain constant, the heat transfer coefficient can be scaled up proportional to D/sup -2/3/ (D = inside diameter of the fired heater tube). All flow conditions, liquid viscosities, and pipe inclinations relevant to the demonstration plant have indicated a slug flow regime in the slurry fired heater. The annular and stratified flow regimes should be avoided to minimize the potential for excessive pipe erosion and to decrease temperature gradients along the pipe cross section leading to coking and thermal stresses, respectively. Cold-flow studies in 3- and 6.75-in.-inside-diameter (ID) pipes were conducted to determine the effect of scale-up on flow regime, slug frequency, and slug dimensions. The developed model assumes that conduction heat transfer occurs through the liquid film surrounding the gas slug and laminar convective heat transfer to the liquid slug. A weighted average of these two heat transfer mechanisms gives a value for the average pipe heat transfer coefficient. The cold-flow work showed a decrease in the observed slug frequency between the 3- and 6.75-ID pipes. Data on the ratio of gas to liquid slug length in the 6.75-in. pipe are not yet complete, but are expected to yield generally lower values than those obtained in the 3-in. pipe; this will probably affect the scale-up to demonstration plant conditions. 5 references, 15 figures, 7 tables.

Moujaes, S.F.

1983-07-01T23:59:59.000Z

471

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

SciTech Connect (OSTI)

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

Hawthorne, S.B.

1997-12-31T23:59:59.000Z

472

Burbank Water and Power - Residential and Commercial Solar Support Program  

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

Burbank Water and Power - Residential and Commercial Solar Support Burbank Water and Power - Residential and Commercial Solar Support Program Burbank Water and Power - Residential and Commercial Solar Support Program < Back Eligibility Commercial Industrial Low-Income Residential Nonprofit Residential Schools State Government Savings Category Solar Buying & Making Electricity Heating & Cooling Water Heating Maximum Rebate Maximum payment of 400,000 per year for performance-based incentives Program Info Start Date 1/1/2010 Expiration Date 12/31/2016 State California Program Type Utility Rebate Program Rebate Amount PV rebates will be awarded via lottery on August 12, 2013 Residential PV: $1.28/W CEC-AC Commercial PV (less than 30 kW): $0.97/W CEC-AC Commercial PV (30 kW or larger): ineligible at this time Solar Water Heaters (residential domestic hot water only; not pools):

473

Solar process water heat for the Iris Images Custom Color Photo Lab. Final report  

SciTech Connect (OSTI)

This is the final technical report of the solar facility locted at Iris Images Custom Photo Laboratory in Mill Valley, California. It was designed to provide 59 percent of the hot water requirements for developing photographic film and domestic hot water use. The design load is to provide 6 gallons of hot water per minute for 8 hours per working day at 100/sup 0/F. It has 640 square feet of flat plate collectors and 360 gallons of hot water storage. The auxiliary back up system is a conventional gas-fired water heater. Freeze protection in this mild climate was originally provided by closed-loop circulation of hot water from the storage tank. Later this was changed to a drain-down system due to a freeze when electrical power failed. This system has been relatively successful with little or no scheduled maintenance. The site and building description, subsystem description, as-built drawings, cost breakdown and analysis, performance analysis, lessons learned, and the operation and maintenance manual are included.

Not Available

1980-03-01T23:59:59.000Z

474

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

SciTech Connect (OSTI)

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

Chasar, D.; Martin, E.

2013-04-01T23:59:59.000Z

475

Risk Factors for Contamination of Hotel Water Distribution Systems by Legionella Species  

Science Journals Connector (OSTI)

...period. DISCUSSION Our data indicate that at the time...www.ewgli.org/data/data_tables/year_onset...rates were higher than in big towns, where hotels generally...heaters powered directly by electricity and solar water heaters...

Varvara Mouchtouri; Emmanuel Velonakis; Andreas Tsakalof; Christina Kapoula; Georgia Goutziana; Alkiviadis Vatopoulos; Jenny Kremastinou; Christos Hadjichristodoulou

2007-01-19T23:59:59.000Z

476

Solar Water Heating  

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

publication provides basic informa- publication provides basic informa- tion on the components and types of solar water heaters currently available and the economic and environmental benefits of owning a system. Although the publica- tion does not provide information on building and installing your own system, it should help you discuss solar water heating systems intelligently with a solar equipment dealer. Solar water heaters, sometimes called

477

Gibson Electric Membership Corporation - Residential Energy Efficient Water  

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

Gibson Electric Membership Corporation - Residential Energy Gibson Electric Membership Corporation - Residential Energy Efficient Water Heater Loan Program Gibson Electric Membership Corporation - Residential Energy Efficient Water Heater Loan Program < Back Eligibility Residential Savings Category Appliances & Electronics Water Heating Maximum Rebate No financing cap for water heater. Program Info State Tennessee Program Type Utility Loan Program Rebate Amount Electric-to-Electric Water Heater Installation: up to $100 Gas-to-Electric Energy Heater Installation: up to $175 Provider Gibson Electric Membership Corporation Gibson Electric Membership Corporation provides loans to its residential customers to finance new, energy efficient water heaters. The loans are interest-free and can be paid off in as many as 3 years. To participate,

478

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

E-Print Network [OSTI]

used must be currently UL (Underwriters Laboratory) approved. 4. Approved space heaters must be fan driven. Space heaters with heated coils are not permitted. 5. Space heaters must have a thermostat that shuts unit off when a certain temperature is reached. 6. Space heaters must have a tip-over shutdown

de Lijser, Peter

479

Electrical noise characteristics of a doped silicon microcantilever heater-thermometer  

E-Print Network [OSTI]

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

King, William P.

480

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

E-Print Network [OSTI]

of the system and its operation is followed by presentation of operating data taken during 1997. INTRODUCTION Chilled water thermal energy storage ('TES) in naturally stratified tanks has been shown to be a valuable central cooling plant load management... and humid environment and presents new data on the performance of a large stratified chilled water storage tank. Figure 1. Plant Schematic. SITE The case study site is the Dallas, TX world headquarters of a major semiconductor manufacturer. The 6...

Bahnfleth, W. P.; Musser, A.

1998-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hot water heaters" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

1992 CBECS User-Needs Study  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

HEATERS ..... 4 5. WITH INSTANTANEOUS HEATERS AT POINT OF USE (NO HOT WATER STORAGE TANKS) ... 5 6. OTHER TYPE OF DISTRIBUTED SYSTEM ... 6 SPECIFY...

482

Heat Recovery Consideration for Process Heaters and Boilers  

E-Print Network [OSTI]

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

Kumar, A.

1984-01-01T23:59:59.000Z

483

An Analysis of Steam Process Heater Condensate Drainage Options  

E-Print Network [OSTI]

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

Risko, J. R.

484

Ninety - Two Percent Minimum Heater Efficiency By 1980  

E-Print Network [OSTI]

Technology is now available to increase heater efficiencies to 92 percent and more. By 1980, this technology will be field proven and corrosion and reliability problems identified and resolved. Recent studies have shown that a minimum efficiency...

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

1980-01-01T23:59:59.000Z