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Note: This page contains sample records for the topic "gas water heating" 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

natural gas+ condensing flue gas heat recovery+ water creation...  

Open Energy Info (EERE)

natural gas+ condensing flue gas heat recovery+ water creation+ CO2 reduction+ cool exhaust gases+ Energy efficiency+ commercial building energy efficiency+ industrial energy...

2

Southwest Gas Corporation- Smarter Greener Better Solar Water Heating Program  

Broader source: Energy.gov [DOE]

Southwest Gas is offering rebates to Nevada customers for solar water heating systems installed in private residential, small business, public and other properties. Rebates are based on the amount...

3

Questar Gas- Residential Solar Assisted Water Heating Rebate Program  

Broader source: Energy.gov [DOE]

Questar gas provides incentives for residential customers to purchase and install solar water heating systems on their homes. Rebates of $750 per system are provided to customers of Questar who...

4

Questar Gas- Residential Solar Assisted Water Heating Rebate Program (Idaho)  

Broader source: Energy.gov [DOE]

Questar gas provides incentives for residential customers to purchase and install solar water heating systems on their homes. Rebates of $750 per system are provided to customers of Questar who...

5

Electric, Gas, Water, Heating, Refrigeration, and Street Railways Facilities and Service (South Dakota)  

Broader source: Energy.gov [DOE]

This legislation contains provisions for facilities and service related to electricity, natural gas, water, heating, refrigeration, and street railways. The chapter addresses the construction and...

6

Gas, Heat, Water, Sewerage Collection and Disposal, and Street Railway Companies (South Carolina)  

Broader source: Energy.gov [DOE]

This legislation applies to public utilities and entities furnishing natural gas, heat, water, sewerage, and street railway services to the public. The legislation addresses rates and services,...

7

Analysis of Heating Systems and Scale of Natural Gas-Condensing Water Boilers in Northern Zones  

E-Print Network [OSTI]

In this paper, various heating systems and scale of the natural gas-condensing water boiler in northern zones are discussed, based on a technical-economic analysis of the heating systems of natural gas condensing water boilers in northern zones...

Wu, Y.; Wang, S.; Pan, S.; Shi, Y.

2006-01-01T23:59:59.000Z

8

Texas Gas Service- Residential Solar Water Heating Rebate Program (Texas)  

Broader source: Energy.gov [DOE]

Texas Gas Service offers a flat rebate of $750 for its residential customers within the Austin and Sunset Valley city limits for the installation and purchase of a new solar water heater with...

9

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

SciTech Connect (OSTI)

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

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

2013-01-21T23:59:59.000Z

10

CORQUENCH: A model for gas sparging-enhanced, melt-water, film-boiling heat transfer  

SciTech Connect (OSTI)

In evaluation of severe-accident sequences for water-cooled nuclear reactors, molten core materials may be postulated to be released into the containment and accumulate on concrete. The heatup and decomposition of concrete is accompanied by the release of water vapor and carbon dioxide gases. Gases flowing through the melt upper surface can influence the rates of heat transfer to water overlying the melt. In particular, the gas flow through the interface can be envisioned to enhance the heat removal from the melt. A mechanistic model (CORQUENCH) has been developed to describe film-boiling heat transfer between a molten pool and an overlying coolant layer in the presence of sparging gas. The model favorably predicts the lead-Feron 11 data of Greene and Greene et al. for which the calculations indicate that area enhancement in the conduction heat transfer across the film is the predominant mechanism leading to augmentation in the heat flux as the gas velocity increases. Predictions for oxidic corium indicate a rapid increase in film-boiling heat flux as the gas velocity rises. The predominant mode of heat transfer for this case is radiation, and the increase in heat flux with gas velocity is primarily a result of interfacial area enhancement of the radiation component of the overall heat transfer coefficient. The CORQUENCH model has been incorporated into the MELTSPREAD-1 computer code{sup 6} for the analysis of transient spreading in containments.

Farmer, M.T.; Sienicki, J.J.; Spencer, B.W.

1990-01-01T23:59:59.000Z

11

Recovery of Water from Boiler Flue Gas Using Condensing Heat Exchangers  

SciTech Connect (OSTI)

Most of the water used in a thermoelectric power plant is used for cooling, and DOE has been focusing on possible techniques to reduce the amount of fresh water needed for cooling. DOE has also been placing emphasis on recovery of usable water from sources not generally considered, such as mine water, water produced from oil and gas extraction, and water contained in boiler flue gas. This report deals with development of condensing heat exchanger technology for recovering moisture from flue gas from coal-fired power plants. The report describes: (1) An expanded data base on water and acid condensation characteristics of condensing heat exchangers in coal-fired units. This data base was generated by performing slip stream tests at a power plant with high sulfur bituminous coal and a wet FGD scrubber and at a power plant firing high-moisture, low rank coals. (2) Data on typical concentrations of HCl, HNO{sub 3} and H{sub 2}SO{sub 4} in low temperature condensed flue gas moisture, and mercury capture efficiencies as functions of process conditions in power plant field tests. (3) Theoretical predictions for sulfuric acid concentrations on tube surfaces at temperatures above the water vapor dewpoint temperature and below the sulfuric acid dew point temperature. (4) Data on corrosion rates of candidate heat exchanger tube materials for the different regions of the heat exchanger system as functions of acid concentration and temperature. (5) Data on effectiveness of acid traps in reducing sulfuric acid concentrations in a heat exchanger tube bundle. (6) Condensed flue gas water treatment needs and costs. (7) Condensing heat exchanger designs and installed capital costs for full-scale applications, both for installation immediately downstream of an ESP or baghouse and for installation downstream of a wet SO{sub 2} scrubber. (8) Results of cost-benefit studies of condensing heat exchangers.

Edward Levy; Harun Bilirgen; John DuPoint

2011-03-31T23:59:59.000Z

12

Recovery of Water from Boiler Flue Gas Using Condensing Heat Exchangers  

SciTech Connect (OSTI)

Most of the water used in a thermoelectric power plant is used for cooling, and DOE has been focusing on possible techniques to reduce the amount of fresh water needed for cooling. DOE has also been placing emphasis on recovery of usable water from sources not generally considered, such as mine water, water produced from oil and gas extraction, and water contained in boiler flue gas. This report deals with development of condensing heat exchanger technology for recovering moisture from flue gas from coal-fired power plants. The report describes: • An expanded data base on water and acid condensation characteristics of condensing heat exchangers in coal-fired units. This data base was generated by performing slip stream tests at a power plant with high sulfur bituminous coal and a wet FGD scrubber and at a power plant firing highmoisture, low rank coals. • Data on typical concentrations of HCl, HNO{sub 3} and H{sub 2}SO{sub 4} in low temperature condensed flue gas moisture, and mercury capture efficiencies as functions of process conditions in power plant field tests. • Theoretical predictions for sulfuric acid concentrations on tube surfaces at temperatures above the water vapor dewpoint temperature and below the sulfuric acid dew point temperature. • Data on corrosion rates of candidate heat exchanger tube materials for the different regions of the heat exchanger system as functions of acid concentration and temperature. • Data on effectiveness of acid traps in reducing sulfuric acid concentrations in a heat exchanger tube bundle. • Condensed flue gas water treatment needs and costs. • Condensing heat exchanger designs and installed capital costs for full-scale applications, both for installation immediately downstream of an ESP or baghouse and for installation downstream of a wet SO{sub 2} scrubber. • Results of cost-benefit studies of condensing heat exchangers.

Levy, Edward; Bilirgen, Harun; DuPont, John

2011-03-31T23:59:59.000Z

13

CORQUENCH: A model for gas sparging-enhanced melt-water, film boiling heat transfer  

SciTech Connect (OSTI)

A phenomenological model (CORQUENCH) has been developed to describe the gas-sparging enhanced film boiling heat transfer between a molten pool of corium and an overlying water layer. The model accounts for thermal radiation across the vapor film, bulk liquid subcooling, interfacial area enhancement due to sparging gas, and melt entrainment into the overlying water layer. In this paper, the modeling approach is described, and a comparison with the lead-Freon 11 and lead-water film boiling experiment data of Greene is made. Predictions are then made for the case of film boiling over corium in the presence of sparging concrete decomposition gases. 15 refs., 3 figs.

Farmer, M.T.; Sienicki, J.J.; Spencer, B.W.

1990-01-01T23:59:59.000Z

14

Solar Water Heating Incentive Program  

Broader source: Energy.gov [DOE]

Beginning in the fall of 2003, Energy Trust of Oregon's Solar Water Heating (SWH) Incentive Program offers incentives to customers of Pacific Power, PGE, NW Natural Gas and Cascade Natural Gas who...

15

Condensing Heating and Water Heating Equipment Workshop Location...  

Energy Savers [EERE]

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

16

Technical Potential of Solar Water Heating to Reduce Fossil Fuel Use and Greenhouse Gas Emissions in the United States  

SciTech Connect (OSTI)

Use of solar water heating (SWH) in the United States grew significantly in the late 1970s and early 1980s, as a result of increasing energy prices and generous tax credits. Since 1985, however, expiration of federal tax credits and decreased energy prices have virtually eliminated the U.S. market for SWH. More recently, increases in energy prices, concerns regarding emissions of greenhouse gases, and improvements in SWH systems have created new interest in the potential of this technology. SWH, which uses the sun to heat water directly or via a heat-transfer fluid in a collector, may be particularly important in its ability to reduce natural gas use. Dependence on natural gas as an energy resource in the United States has significantly increased in the past decade, along with increased prices, price volatility, and concerns about sustainability and security of supply. One of the readily deployable technologies available to decrease use of natural gas is solar water heating. This report provides an overview of the technical potential of solar water heating to reduce fossil fuel consumption and associated greenhouse gas emissions in U.S. residential and commercial buildings.

Denholm, P.

2007-03-01T23:59:59.000Z

17

natural gas+ condensing flue gas heat recovery+ water creation+ CO2  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectric Coop,SaveWhiskey Flatshydro Home Water Powerlaunchmulticolorreduction+

18

Anisotropic Heat and Water Transport in a PEFC Cathode Gas Diffusion Layer  

E-Print Network [OSTI]

PEFCs , owing to their high en- ergy efficiency, low emission, and low noise, are widely considered. In addition, the latent heat effects due to condensation/evaporation of water on the temperature and water ohmic losses. Along with water man- agement, thermal management is also a key to high performance

19

Total Space Heating Water Heating Cook-  

Gasoline and Diesel Fuel Update (EIA)

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

20

Total Space Heating Water Heating Cook-  

Gasoline and Diesel Fuel Update (EIA)

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

Note: This page contains sample records for the topic "gas water heating" 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

Total Space Heating Water Heating Cook-  

Gasoline and Diesel Fuel Update (EIA)

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

22

Total Space Heating Water Heating Cook-  

Gasoline and Diesel Fuel Update (EIA)

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

23

Water Heating Requirements – Overview Page 5-1 5. Water Heating Requirements 5.1 Overview 5  

E-Print Network [OSTI]

. Electric heat pump water heaters, however, are closer to the efficiency of typical gas systems, because

unknown authors

24

Laboratory Evaluation of Gas-Fired Tankless and Storage Water Heater Approaches to Combination Water and Space Heating  

SciTech Connect (OSTI)

Homebuilders are exploring more cost effective combined space and water heating systems (combo systems) with major water heater manufacturers that are offering pre-engineered forced air space heating combo systems. In this project, unlike standardized tests, laboratory tests were conducted that subjected condensing tankless and storage water heater based combo systems to realistic, coincidental space and domestic hot water loads with the following key findings: 1) The tankless combo system maintained more stable DHW and space heating temperatures than the storage combo system. 2) The tankless combo system consistently achieved better daily efficiencies (i.e. 84%-93%) than the storage combo system (i.e. 81%- 91%) when the air handler was sized adequately and adjusted properly to achieve significant condensing operation. When condensing operation was not achieved, both systems performed with lower (i.e. 75%-88%), but similar efficiencies. 3) Air handlers currently packaged with combo systems are not designed to optimize condensing operation. More research is needed to develop air handlers specifically designed for condensing water heaters. 4) System efficiencies greater than 90% were achieved only on days where continual and steady space heating loads were required with significant condensing operation. For days where heating was more intermittent, the system efficiencies fell below 90%.

Kingston, T.; Scott, S.

2013-03-01T23:59:59.000Z

25

Recovery of Water from Boiler Flue Gas  

SciTech Connect (OSTI)

This project dealt with use of condensing heat exchangers to recover water vapor from flue gas at coal-fired power plants. Pilot-scale heat transfer tests were performed to determine the relationship between flue gas moisture concentration, heat exchanger design and operating conditions, and water vapor condensation rate. The tests also determined the extent to which the condensation processes for water and acid vapors in flue gas can be made to occur separately in different heat transfer sections. The results showed flue gas water vapor condensed in the low temperature region of the heat exchanger system, with water capture efficiencies depending strongly on flue gas moisture content, cooling water inlet temperature, heat exchanger design and flue gas and cooling water flow rates. Sulfuric acid vapor condensed in both the high temperature and low temperature regions of the heat transfer apparatus, while hydrochloric and nitric acid vapors condensed with the water vapor in the low temperature region. Measurements made of flue gas mercury concentrations upstream and downstream of the heat exchangers showed a significant reduction in flue gas mercury concentration within the heat exchangers. A theoretical heat and mass transfer model was developed for predicting rates of heat transfer and water vapor condensation and comparisons were made with pilot scale measurements. Analyses were also carried out to estimate how much flue gas moisture it would be practical to recover from boiler flue gas and the magnitude of the heat rate improvements which could be made by recovering sensible and latent heat from flue gas.

Edward Levy; Harun Bilirgen; Kwangkook Jeong; Michael Kessen; Christopher Samuelson; Christopher Whitcombe

2008-09-30T23:59:59.000Z

26

Water-heating dehumidifier  

DOE Patents [OSTI]

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

Tomlinson, John J. (Knoxville, TN)

2006-04-18T23:59:59.000Z

27

CenterPoint Energy- Residential Gas Heating Rebates  

Broader source: Energy.gov [DOE]

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

28

Water and Space Heating Heat Pumps  

E-Print Network [OSTI]

This paper discusses the design and operation of the Trane Weathertron III Heat Pump Water Heating System and includes a comparison of features and performance to other domestic water heating systems. Domestic water is generally provided through...

Kessler, A. F.

1985-01-01T23:59:59.000Z

29

International Lige Colloquium on Ocean Dynamics, GAS TRANSFER AT WATER SURFACES, May 2 -6 2005 Estimation of air-sea gas and heat fluxes from infrared imagery and  

E-Print Network [OSTI]

2005 Estimation of air-sea gas and heat fluxes from infrared imagery and surface wave measurements and much higher heat fluxes. In addition, the infrared imagery analysis reveals potentially significant the infrared images. It is also shown that the difference in the surface boundary conditions for heat and gas

Jaehne, Bernd

30

Southwest Gas Corporation- Smarter Greener Better Solar Water Heating Program (Arizona)  

Broader source: Energy.gov [DOE]

'''''Note: Effective July 15, 2013, Southwest Gas is no longer accepting applications for the current program year. Systems installed during the current program year will not be eligible for a...

31

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 Queen’s University in the… (more)

Murray, PORTIA

2015-01-01T23:59:59.000Z

32

Method and apparatus for fuel gas moisturization and heating  

DOE Patents [OSTI]

Fuel gas is saturated with water heated with a heat recovery steam generator heat source. The heat source is preferably a water heating section downstream of the lower pressure evaporator to provide better temperature matching between the hot and cold heat exchange streams in that portion of the heat recovery steam generator. The increased gas mass flow due to the addition of moisture results in increased power output from the gas and steam turbines. Fuel gas saturation is followed by superheating the fuel, preferably with bottom cycle heat sources, resulting in a larger thermal efficiency gain compared to current fuel heating methods. There is a gain in power output compared to no fuel heating, even when heating the fuel to above the LP steam temperature.

Ranasinghe, Jatila (Niskayuna, NY); Smith, Raub Warfield (Ballston Lake, NY)

2002-01-01T23:59:59.000Z

33

Water Heating Requirements Overview Page 5-1 5 Water Heating Requirements  

E-Print Network [OSTI]

units with tank volumes of 40 to 50 gallons. Standby loss associated with the center flue gas storage energy use. Whereas natural gas, (liquefied petroleum gas), LPG or oil can be burned directly to heat code from 2008 are listed below: Instantaneous (or tankless) water heaters including gas, oil, small

34

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

35

Intermountain Gas Company (IGC)- Gas Heating Rebate Program  

Broader source: Energy.gov [DOE]

The Intermountain Gas Company's (IGC) Gas Heating Rebate Program offers customers a $200 per unit rebate when they convert to a high efficiency natural gas furnace that replaces a heating system...

36

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

37

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

38

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

Energy Savers [EERE]

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

39

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

E-Print Network [OSTI]

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

Lekov, Alex

2011-01-01T23:59:59.000Z

40

Residential Solar Water Heating Rebates  

Broader source: Energy.gov [DOE]

New Hampshire offers a rebate for residential solar water-heating systems and solar space-heating systems. The rebate is equal to $1,500 for systems with an annual estimated output of 5.5 MMBTU to...

Note: This page contains sample records for the topic "gas water heating" 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

Gas Water Heater Energy Losses  

E-Print Network [OSTI]

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

Biermayer, Peter

2012-01-01T23:59:59.000Z

42

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

43

THERMOSIPHON WATER HEATERS WITH HEAT EXCHANGERS  

E-Print Network [OSTI]

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

Mertol, Atila

2012-01-01T23:59:59.000Z

44

Consolidated Electric Cooperative- Heat Pump and Water Heating Rebates  

Broader source: Energy.gov [DOE]

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

45

,"Colorado Heat Content of Natural Gas Consumed"  

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

Name","Description"," Of Series","Frequency","Latest Data for" ,"Data 1","Colorado Heat Content of Natural Gas Consumed",1,"Monthly","112014","1152013" ,"Release...

46

Water Heating Technologies Research and Development Roadmap ...  

Energy Savers [EERE]

Water Heating Technologies Research and Development Roadmap Water Heating Technologies Research and Development Roadmap This roadmap establishes a set of high-priority RD&D...

47

Emerging Water Heating Technologies Research & Development Roadmap...  

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

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

48

Solar Water Heating Webinar | Department of Energy  

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

Weatherization Assistance Program Pilot Projects Solar Water Heating Webinar Solar Water Heating Webinar Watch a recording of National Renewable Energy Laboratory (NREL)...

49

Method for controlling exhaust gas heat recovery systems in vehicles  

DOE Patents [OSTI]

A method of operating a vehicle including an engine, a transmission, an exhaust gas heat recovery (EGHR) heat exchanger, and an oil-to-water heat exchanger providing selective heat-exchange communication between the engine and transmission. The method includes controlling a two-way valve, which is configured to be set to one of an engine position and a transmission position. The engine position allows heat-exchange communication between the EGHR heat exchanger and the engine, but does not allow heat-exchange communication between the EGHR heat exchanger and the oil-to-water heat exchanger. The transmission position allows heat-exchange communication between the EGHR heat exchanger, the oil-to-water heat exchanger, and the engine. The method also includes monitoring an ambient air temperature and comparing the monitored ambient air temperature to a predetermined cold ambient temperature. If the monitored ambient air temperature is greater than the predetermined cold ambient temperature, the two-way valve is set to the transmission position.

Spohn, Brian L.; Claypole, George M.; Starr, Richard D

2013-06-11T23:59:59.000Z

50

Combustion Exhaust Gas Heat to Power Using Thermoelectric Engines...  

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

Combustion Exhaust Gas Heat to Power Using Thermoelectric Engines Combustion Exhaust Gas Heat to Power Using Thermoelectric Engines Discusses a novel TEG which utilizes a...

51

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

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

Thermoelectric Conversion of Exhaust Gas Waste Heat into Usable Electricity Thermoelectric Conversion of Exhaust Gas Waste Heat into Usable Electricity Presents successful...

52

Natural Gas Heat Pump and Air Conditioner | Department of Energy  

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

Natural Gas Heat Pump and Air Conditioner Natural Gas Heat Pump and Air Conditioner Lead Performer: Thermolift - Stony Brook, NY Partners: -- New York State Energy Research &...

53

Dawdon Mine Water Heat Pump Trial  

E-Print Network [OSTI]

14-Dec-12 Dawdon Mine Water Heat Pump Trial #12;14 December 2012 2 Potential for Mine Water sourced heating Dawdon heat pump trial A demonstration project Contents #12;Friday, 14 December 2012 3 The UK salinity High Iron (removed by lime treatment) Offices , 8 rooms #12;Dawdon heat pump Warm mine water

Oak Ridge National Laboratory

54

Modern hot water district heating  

SciTech Connect (OSTI)

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

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

1984-06-01T23:59:59.000Z

55

Heat Hyperbolic Diffusion in Planck Gas  

E-Print Network [OSTI]

In this paper we investigate the diffusion of the thermal pulse in Planck Gas. We show that the Fourier diffusion equation gives the speed of diffusion, v > c and breaks the causality of the thermal processes in Planck gas .For hyperbolic heat transport v

Miroslaw Kozlowski; Janina Marciak-Kozlowska

2006-07-06T23:59:59.000Z

56

Heat conductivity of a pion gas  

E-Print Network [OSTI]

We evaluate the heat conductivity of a dilute pion gas employing the Uehling-Uehlenbeck equation and experimental phase-shifts parameterized by means of the SU(2) Inverse Amplitude Method. Our results are consistent with previous evaluations. For comparison we also give results for an (unphysical) hard sphere gas.

Antonio Dobado Gonzalez; Felipe J. Llanes-Estrada; Juan M. Torres Rincon

2007-02-13T23:59:59.000Z

57

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

SciTech Connect (OSTI)

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

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

1992-07-01T23:59:59.000Z

58

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

SciTech Connect (OSTI)

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

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

1992-07-01T23:59:59.000Z

59

Ecological and Economical efficient Heating and Cooling by innovative Gas Motor Heat Pump Systems and Solutions  

E-Print Network [OSTI]

#12;Ecological and Economical efficient Heating and Cooling by innovative Gas Motor Heat Pump use of buildings Gas Heat Pump Solution #12;Gas Heat Pump - deserves special attention due to its source in addition to the outside air ·A further essential component of Gas Heat Pump air conditioning

Oak Ridge National Laboratory

60

Residential gas-fired sorption heat Test and technology evaluation  

E-Print Network [OSTI]

..........................................................................................10 1.3.2 Adsorption heat pumpsResidential gas-fired sorption heat pumps Test and technology evaluation Energiforskningsprogram EFP05 Journal nr: 33031-0054 December 2008 #12;Residential gas-fired sorption heat pumps Test

Note: This page contains sample records for the topic "gas water heating" 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

Gas heat transfer in a heated vertical channel under deteriorated turbulent heat transfer regime  

E-Print Network [OSTI]

Passive cooling via natural circulation of gas after a loss of coolant (LOCA) accident is one of the major goals of the Gas-cooled Fast Reactor (GFR). Due to its high surface heat flux and low coolant velocities under ...

Lee, Jeongik

2007-01-01T23:59:59.000Z

62

Gas Heat Transfer in a Heated Vertical Channel under Deteriorated Turbulent Heat Transfer Regime  

E-Print Network [OSTI]

Passive cooling via natural circulation of gas after a loss of coolant (LOCA) accident is one of the major goals of the Gas-cooled Fast Reactor (GFR). Due to its high surface heat flux and low coolant velocities under ...

Lee, Jeongik

63

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

64

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

65

Underground Mine Water Heating and Cooling Using Geothermal Heat Pump Systems  

SciTech Connect (OSTI)

In many regions of the world, flooded mines are a potentially cost-effective option for heating and cooling using geothermal heat pump systems. For example, a single coal seam in Pennsylvania, West Virginia, and Ohio contains 5.1 x 1012 L of water. The growing volume of water discharging from this one coal seam totals 380,000 L/min, which could theoretically heat and cool 20,000 homes. Using the water stored in the mines would conservatively extend this option to an order of magnitude more sites. Based on current energy prices, geothermal heat pump systems using mine water could reduce annual costs for heating by 67% and cooling by 50% over conventional methods (natural gas or heating oil and standard air conditioning).

Watzlaf, G.R.; Ackman, T.E.

2006-03-01T23:59:59.000Z

66

Performance of Gas-Engine Driven Heat Pump Unit  

SciTech Connect (OSTI)

Air-conditioning (cooling) for buildings is the single largest use of electricity in the United States (U.S.). This drives summer peak electric demand in much of the U.S. Improved air-conditioning technology thus has the greatest potential impact on the electric grid compared to other technologies that use electricity. Thermally-activated technologies (TAT), such as natural gas engine-driven heat pumps (GHP), can provide overall peak load reduction and electric grid relief for summer peak demand. GHP offers an attractive opportunity for commercial building owners to reduce electric demand charges and operating expenses. Engine-driven systems have several potential advantages over conventional single-speed or single-capacity electric motor-driven units. Among them are variable speed operation, high part load efficiency, high temperature waste heat recovery from the engine, and reduced annual operating costs (SCGC 1998). Although gas engine-driven systems have been in use since the 1960s, current research is resulting in better performance, lower maintenance requirements, and longer operating lifetimes. Gas engine-driven systems are typically more expensive to purchase than comparable electric motor-driven systems, but they typically cost less to operate, especially for commercial building applications. Operating cost savings for commercial applications are primarily driven by electric demand charges. GHP operating costs are dominated by fuel costs, but also include maintenance costs. The reliability of gas cooling equipment has improved in the last few years and maintenance requirements have decreased (SCGC 1998, Yahagi et al. 2006). Another advantage of the GHP over electric motor-driven is the ability to use the heat rejected from the engine during heating operation. The recovered heat can be used to supplement the vapor compression cycle during heating or to supply other process loads, such as water heating. The use of the engine waste heat results in greater operating efficiency compared to conventional electric motor-driven units (SCGC 1998). In Japan, many hundreds of thousands of natural gas-driven heat pumps have been sold (typically 40,000 systems annually) (Yahagi et al. 2006). The goal of this program is to develop dependable and energy efficient GHPs suitable for U.S. commercial rooftop applications (the single largest commercial product segment). This study describes the laboratory performance evaluation of an integrated 10-ton GHP rooftop unit (a 900cc Daihatsu-Aisin natural gas engine) which uses R410A as the refrigerant (GEDAC No.23). ORNL Thermally-Activated Heat Pump (TAHP) Environmental Chambers were used to evaluate this unit in a controlled laboratory environment.

Abdi Zaltash; Randy Linkous; Randall Wetherington; Patrick Geoghegan; Ed Vineyard; Isaac Mahderekal; Robert Gaylord

2008-09-30T23:59:59.000Z

67

Comparison of Advanced Residential Water Heating Technologies in the United States  

SciTech Connect (OSTI)

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

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

2013-05-01T23:59:59.000Z

68

Solar Water Heating in Dragash Municipality, Kosovo.  

E-Print Network [OSTI]

?? Water has been heated with the sun has almost as long as there have been humans, but itis not until recently that more advanced… (more)

Dahl Håkans, Mia

2010-01-01T23:59:59.000Z

69

Gulf Power- Solar Thermal Water Heating Program  

Broader source: Energy.gov [DOE]

'''''This program reopened on October 3, 2011 for 2012 applications. Funding is limited and must be reserved through online application before the installation of qualifying solar water heating...

70

Valley Electric Association- Solar Water Heating Program  

Broader source: Energy.gov [DOE]

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

71

EWEB- Residential Solar Water Heating Loan Program  

Broader source: Energy.gov [DOE]

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

72

Slurried solid media for simultaneous water purification and carbon dioxide removal from gas mixtures  

DOE Patents [OSTI]

A slurried solid media for simultaneous water purification and carbon dioxide removal from gas mixtures includes the steps of dissolving the gas mixture and carbon dioxide in water providing a gas, carbon dioxide, water mixture; adding a porous solid media to the gas, carbon dioxide, water mixture forming a slurry of gas, carbon dioxide, water, and porous solid media; heating the slurry of gas, carbon dioxide, water, and porous solid media producing steam; and cooling the steam to produce purified water and carbon dioxide.

Aines, Roger D.; Bourcier, William L.; Viani, Brian

2013-01-29T23:59:59.000Z

73

Heat transfer through a water spray curtain under the effect of a strong radiative source  

E-Print Network [OSTI]

Heat transfer through a water spray curtain under the effect of a strong radiative source P. Boulet - mail Pascal.Boulet@lemta.uhp-nancy.fr Keywords : heat transfer, radiative transfer, vaporization, convection, water spray Abstract Heat transfer inside a participating medium, made of droplets flowing in gas

Paris-Sud XI, Université de

74

Water augmented indirectly-fired gas turbine systems and method  

DOE Patents [OSTI]

An indirectly-fired gas turbine system utilizing water augmentation for increasing the net efficiency and power output of the system is described. Water injected into the compressor discharge stream evaporatively cools the air to provide a higher driving temperature difference across a high temperature air heater which is used to indirectly heat the water-containing air to a turbine inlet temperature of greater than about 1,000.degree. C. By providing a lower air heater hot side outlet temperature, heat rejection in the air heater is reduced to increase the heat recovery in the air heater and thereby increase the overall cycle efficiency.

Bechtel, Thomas F. (Lebanon, PA); Parsons, Jr., Edward J. (Morgantown, WV)

1992-01-01T23:59:59.000Z

75

DEVELOPMENT OF THFEGENERAL ELECTRIC STIRLING ENGINE GAS HEAT PUMP  

E-Print Network [OSTI]

DEVELOPMENT OF THFEGENERAL ELECTRIC STIRLING ENGINE GAS HEAT PUMP R. C. Meier, Program Manager, Gas Heat Pump Program General Electric Company P. 0. Box 8555 Philadelphia, Pennsylvania 19101 FILE COPY DO NOT REMOVE SUMMARY The Stirling/Rankine Heat Activated Heat Pump is a high performance product for space

Oak Ridge National Laboratory

76

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

E-Print Network [OSTI]

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

Franco, Victor

2011-01-01T23:59:59.000Z

77

[Waste water heat recovery system  

SciTech Connect (OSTI)

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

Not Available

1993-04-28T23:59:59.000Z

78

New configurations of a heat recovery absorption heat pump integrated with a natural gas boiler for boiler efficiency improvement  

SciTech Connect (OSTI)

Conventional natural gas-fired boilers exhaust flue gas direct to the atmosphere at 150 200 C, which, at such temperatures, contains large amount of energy and results in relatively low thermal efficiency ranging from 70% to 80%. Although condensing boilers for recovering the heat in the flue gas have been developed over the past 40 years, their present market share is still less than 25%. The major reason for this relatively slow acceptance is the limited improvement in the thermal efficiency of condensing boilers. In the condensing boiler, the temperature of the hot water return at the range of 50 60 C, which is used to cool the flue gas, is very close to the dew point of the water vapor in the flue gas. Therefore, the latent heat, the majority of the waste heat in the flue gas, which is contained in the water vapor, cannot be recovered. This paper presents a new approach to improve boiler thermal efficiency by integrating absorption heat pumps with natural gas boilers for waste heat recovery (HRAHP). Three configurations of HRAHPs are introduced and discussed. The three configurations are modeled in detail to illustrate the significant thermal efficiency improvement they attain. Further, for conceptual proof and validation, an existing hot water-driven absorption chiller is operated as a heat pump at operating conditions similar to one of the devised configurations. An overall system performance and economic analysis are provided for decision-making and as evidence of the potential benefits. These three configurations of HRAHP provide a pathway to achieving realistic high-efficiency natural gas boilers for applications with process fluid return temperatures higher than or close to the dew point of the water vapor in the flue gas.

Qu, Ming [Purdue University, West Lafayette, IN; Abdelaziz, Omar [ORNL; Yin, Hongxi [Southeast University, Nanjing, China

2014-01-01T23:59:59.000Z

79

Santa Clara Water and Sewer- Solar Water Heating Program  

Broader source: Energy.gov [DOE]

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

80

Oil and Gas CDT Coupled flow of water and gas  

E-Print Network [OSTI]

Oil and Gas CDT Coupled flow of water and gas during hydraulic fracture in shale The University of Oxford http://www.earth.ox.ac.uk/people/profiles/academic/joec Key Words Shale gas, hydraulic fracture, groundwater contamination, transport in porous media Overview Recovery of natural gas from mudstone (shale

Henderson, Gideon

Note: This page contains sample records for the topic "gas water heating" 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

High Efficiency R-744 Commercial Heat Pump Water Heaters  

SciTech Connect (OSTI)

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

Elbel, Dr. Stefan W.; Petersen, Michael

2013-04-25T23:59:59.000Z

82

Working on new gas turbine cycle for heat pump drive  

E-Print Network [OSTI]

Working on new gas turbine cycle for heat pump drive FILE COPY TAP By Irwin Stambler, Field Editor, is sized for a 10-ton heat pump system - will be scaled to power a commercial product line ranging from 7 of the cycle- as a heat pump drive for commercial installations. Company is testing prototype gas turbine

Oak Ridge National Laboratory

83

Lakeland Electric- Solar Water Heating Program  

Broader source: Energy.gov [DOE]

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

84

Report on Solar Water Heating Quantitative Survey  

SciTech Connect (OSTI)

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

Focus Marketing Services

1999-05-06T23:59:59.000Z

85

Recovery Act-Funded Water Heating Projects  

Broader source: Energy.gov [DOE]

The U.S. Department of Energy was allocated funding from the American Recovery and Reinvestment Act to conduct research into water heating technologies and applications. Projects funded by the...

86

Transport Membrane Condenser for Water and Energy Recovery from Power Plant Flue Gas  

SciTech Connect (OSTI)

The new waste heat and water recovery technology based on a nanoporous ceramic membrane vapor separation mechanism has been developed for power plant flue gas application. The recovered water vapor and its latent heat from the flue gas can increase the power plant boiler efficiency and reduce water consumption. This report describes the development of the Transport Membrane Condenser (TMC) technology in details for power plant flue gas application. The two-stage TMC design can achieve maximum heat and water recovery based on practical power plant flue gas and cooling water stream conditions. And the report includes: Two-stage TMC water and heat recovery system design based on potential host power plant coal fired flue gas conditions; Membrane performance optimization process based on the flue gas conditions, heat sink conditions, and water and heat transport rate requirement; Pilot-Scale Unit design, fabrication and performance validation test results. Laboratory test results showed the TMC system can exact significant amount of vapor and heat from the flue gases. The recovered water has been tested and proved of good quality, and the impact of SO{sub 2} in the flue gas on the membrane has been evaluated. The TMC pilot-scale system has been field tested with a slip stream of flue gas in a power plant to prove its long term real world operation performance. A TMC scale-up design approach has been investigated and an economic analysis of applying the technology has been performed.

Dexin Wang

2012-03-31T23:59:59.000Z

87

Warm Springs Water District District Heating Low Temperature...  

Open Energy Info (EERE)

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

88

Increasing interest in the gas engine heat pump  

SciTech Connect (OSTI)

Increasing primary-energy prices and the availability of untapped heat sources have sparked interest in using a high-efficiency natural gas-driven engine as the power source in a heatpump system. This approach is being studied using a 37-kW Waukesha gas engine; one recently completed installation at Schiedam, Netherlands, extracts heat from a nearby waterway and utilizes the gas engine's waste heat as well.

Not Available

1980-10-01T23:59:59.000Z

89

,"New Mexico Heat Content of Natural Gas Consumed"  

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

,"Worksheet Name","Description"," Of Series","Frequency","Latest Data for" ,"Data 1","New Mexico Heat Content of Natural Gas Consumed",1,"Monthly","12015","1152013"...

90

,"New York Heat Content of Natural Gas Consumed"  

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

Name","Description"," Of Series","Frequency","Latest Data for" ,"Data 1","New York Heat Content of Natural Gas Consumed",1,"Monthly","102014","1152013" ,"Release...

91

Combustion Exhaust Gas Heat to Power usingThermoelectric Engines...  

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

Solutions Combustion Exhaust Gas Heat to Power using Thermoelectric Engines John LaGrandeur October 5, 2011 Advanced Thermoelectric Solutions - 1 - Market motivation based on CO 2...

92

Southwest Gas Corporation- Combined Heat and Power Program  

Broader source: Energy.gov [DOE]

Southwest Gas Corporation (SWG) offers incentives to qualifying commercial and industrial facilities who install efficient Combined Heat and Power systems (CHP). CHP systems produce localized, on...

93

Enhanced convective and film boiling heat transfer by surface gas injection  

SciTech Connect (OSTI)

Heat transfer measurements were made for stable film boiling of water over a horizontal, flat stainless steel plate from the minimum film boiling point temperature, T{sub SURFACE} {approximately}500K, to T{sub SURFACE} {approximately}950K. The pressure at the plate was approximately 1 atmosphere and the temperature of the water pool was maintained at saturation. The data were compared to the Berenson film-boiling model, which was developed for minimum film-boiling-point conditions. The model accurately represented the data near the minimum film-boiling point and at the highest temperatures measured, as long it was corrected for the heat transferred by radiation. On the average, the experimental data lay within {plus_minus}7% of the model. Measurements of heat transfer were made without film boiling for nitrogen jetting into an overlying pool of water from nine 1-mm- diameter holes, drilled in the heat transfer plate. The heat flux was maintained constant at approximately 26.4 kW/m{sup 2}. For water-pool heights of less than 6cm the heat transfer coefficient deceased linearly with a decrease in heights. Above 6cm the heat transfer coefficient was unaffected. For the entire range of gas velocities measured [0 to 8.5 cm/s], the magnitude of the magnitude of the heat transfer coefficient only changed by approximately 20%. The heat transfer data bound the Konsetov model for turbulent pool heat transfer which was developed for vertical heat transfer surfaces. This agreement suggests that surface orientation may not be important when the gas jets do not locally affect the surface heat transfer. Finally, a database was developed for heat transfer from the plate with both film boiling and gas jetting occurring simultaneously, in a pool of water maintained at its saturation temperature. The effect of passing nitrogen through established film boiling is to increase the heat transfer from that surface. 60 refs.

Duignan, M.R.; Greene, G.A. [Brookhaven National Lab., Upton, NY (United States); Irvine, T.F., Jr. [State Univ. of New York, Stony Brook, NY (United States). Dept. of Mechanical Engineering

1992-04-01T23:59:59.000Z

94

Enhanced convective and film boiling heat transfer by surface gas injection  

SciTech Connect (OSTI)

Heat transfer measurements were made for stable film boiling of water over a horizontal, flat stainless steel plate from the minimum film boiling point temperature, T{sub SURFACE} {approximately}500K, to T{sub SURFACE} {approximately}950K. The pressure at the plate was approximately 1 atmosphere and the temperature of the water pool was maintained at saturation. The data were compared to the Berenson film-boiling model, which was developed for minimum film-boiling-point conditions. The model accurately represented the data near the minimum film-boiling point and at the highest temperatures measured, as long it was corrected for the heat transferred by radiation. On the average, the experimental data lay within {plus minus}7% of the model. Measurements of heat transfer were made without film boiling for nitrogen jetting into an overlying pool of water from nine 1-mm- diameter holes, drilled in the heat transfer plate. The heat flux was maintained constant at approximately 26.4 kW/m{sup 2}. For water-pool heights of less than 6cm the heat transfer coefficient deceased linearly with a decrease in heights. Above 6cm the heat transfer coefficient was unaffected. For the entire range of gas velocities measured (0 to 8.5 cm/s), the magnitude of the magnitude of the heat transfer coefficient only changed by approximately 20%. The heat transfer data bound the Konsetov model for turbulent pool heat transfer which was developed for vertical heat transfer surfaces. This agreement suggests that surface orientation may not be important when the gas jets do not locally affect the surface heat transfer. Finally, a database was developed for heat transfer from the plate with both film boiling and gas jetting occurring simultaneously, in a pool of water maintained at its saturation temperature. The effect of passing nitrogen through established film boiling is to increase the heat transfer from that surface. 60 refs.

Duignan, M.R.; Greene, G.A. (Brookhaven National Lab., Upton, NY (United States)); Irvine, T.F., Jr. (State Univ. of New York, Stony Brook, NY (United States). Dept. of Mechanical Engineering)

1992-04-01T23:59:59.000Z

95

Drain-Water Heat Recovery | Department of Energy  

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

works well with all types of water heaters, especially with demand and solar water heaters. Drain-water heat exchangers can recover heat from the hot water used in showers,...

96

Solar water heating technical support. Technical report for November 1997--April 1998 and final report  

SciTech Connect (OSTI)

This progress report covers the time period November 1, 1997 through April 30, 1998, and also summarizes the project as the final report. The topics of the report include certification of solar collectors for water heating systems, modeling and testing of solar collectors and gas water heater backup systems, ratings of collectors for specific climates, and solar pool heating systems.

Huggins, J.

1998-10-01T23:59:59.000Z

97

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...

98

FEMP Designated Product Assessment for Commercial Gas Water Heaters  

E-Print Network [OSTI]

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

Lutz, Jim

2012-01-01T23:59:59.000Z

99

Gas Water Heater Energy Losses  

E-Print Network [OSTI]

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

Biermayer, Peter

2012-01-01T23:59:59.000Z

100

Energy Consumption and Demand as Affected by Heat Pumps that Cool, Heat and Heat Domestic Water  

E-Print Network [OSTI]

heaters. The methods presented demonstrate how integrated systems can be of value in reducing daily summertime peaks. INTRODUCTION A need for descriptors to evaluate systems that condition space and heat domestic water has been recognized for several... added to and used by the water from the desuperheated refrigerant - heat normally provided by the electric water heater's resistance elements. DESCRIPTION OF EQUIPMENT The system considered for this study is best described by U.S. Patent No. 4...

Cawley, R.

Note: This page contains sample records for the topic "gas water heating" 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

COLLISIONLESS ELECTRON HEATING IN RF GAS DISCHARGES: I. QUASILINEAR THEORY  

E-Print Network [OSTI]

COLLISIONLESS ELECTRON HEATING IN RF GAS DISCHARGES: I. QUASILINEAR THEORY Yu.M. Aliev1 , I an interest in mechanisms of electron heating and power deposition in the plasma main- tained by radio parameters. Due to the large value of the mean free path (MFP) the main mechanism of electron heating turns

Kaganovich, Igor

102

Ashland Electric Utility- Bright Way to Heat Water Loan  

Broader source: Energy.gov [DOE]

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

103

Ashland Electric Utility- Bright Way to Heat Water Rebate  

Broader source: Energy.gov [DOE]

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

104

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

105

Dynamic characteristics of gas-water interfacial plasma under water  

SciTech Connect (OSTI)

Gas-water interfacial plasmas under water were generated in a compact space in a tube with a sandglass-like structure, where two metal wires were employed as electrodes with an applied 35 kHz ac power source. The dynamic behaviors of voltage/current were investigated for the powered electrode with/without water cover to understand the effect of the gas-water interface. It is found that the discharge exhibits periodic pulsed currents after breakdown as the powered electrode is covered with water, whereas the electrical current reveals a damped oscillation with time with a frequency about 10{sup 6} Hz as the powered electrode is in a vapor bubble. By increasing water conductivity, a discharge current waveform transition from pulse to oscillation presents in the water covering case. These suggest that the gas-water interface has a significant influence on the discharge property.

Zheng, S. J.; Zhang, Y. C.; Ke, B.; Ding, F.; Tang, Z. L.; Yang, K.; Zhu, X. D. [Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China)

2012-06-15T23:59:59.000Z

106

Building America Standing Technical Committee- Water Heating  

Broader source: Energy.gov [DOE]

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

107

Simulation of energy use in residential water heating systems Carolyn Dianarose Schneyer  

E-Print Network [OSTI]

around BC: Kamloops, Victoria and Williams Lake. Electric and gas-fired tank water heaters of various The resulting data is presented from a variety of angles, including the relative impacts of water heater ratingSimulation of energy use in residential water heating systems by Carolyn Dianarose Schneyer B

Victoria, University of

108

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

DOE Patents [OSTI]

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

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

2006-06-27T23:59:59.000Z

109

FEMP Designated Product Assessment for Commercial Gas Water Heaters  

E-Print Network [OSTI]

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

Lutz, Jim

2012-01-01T23:59:59.000Z

110

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

111

PECO Energy (Gas) – Heating Efficiency Rebate Program  

Broader source: Energy.gov [DOE]

The PECO Smart Gas Efficiency Upgrade Program offers rebates and incentives to commercial or residential customers that install an ENERGY STAR qualified high-efficiency natural gas furnace or...

112

Cascade heat recovery with coproduct gas production  

DOE Patents [OSTI]

A process for the integration of a chemical absorption separation of oxygen and nitrogen from air with a combustion process is set forth wherein excess temperature availability from the combustion process is more effectively utilized to desorb oxygen product from the absorbent and then the sensible heat and absorption reaction heat is further utilized to produce a high temperature process stream. The oxygen may be utilized to enrich the combustion process wherein the high temperature heat for desorption is conducted in a heat exchange preferably performed with a pressure differential of less than 10 atmospheres which provides considerable flexibility in the heat exchange. 4 figs.

Brown, W.R.; Cassano, A.A.; Dunbobbin, B.R.; Rao, P.; Erickson, D.C.

1986-10-14T23:59:59.000Z

113

Cascade heat recovery with coproduct gas production  

DOE Patents [OSTI]

A process for the integration of a chemical absorption separation of oxygen and nitrogen from air with a combustion process is set forth wherein excess temperature availability from the combustion process is more effectively utilized to desorb oxygen product from the absorbent and then the sensible heat and absorption reaction heat is further utilized to produce a high temperature process stream. The oxygen may be utilized to enrich the combustion process wherein the high temperature heat for desorption is conducted in a heat exchange preferably performed with a pressure differential of less than 10 atmospheres which provides considerable flexibility in the heat exchange.

Brown, William R. (Zionsville, PA); Cassano, Anthony A. (Allentown, PA); Dunbobbin, Brian R. (Allentown, PA); Rao, Pradip (Allentown, PA); Erickson, Donald C. (Annapolis, MD)

1986-01-01T23:59:59.000Z

114

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...

115

Forming liquid sprays in compressed-gas energy storage systems for effective heat exchange  

DOE Patents [OSTI]

In various embodiments, efficiency of energy storage and recovery systems compressing and expanding gas is improved via heat exchange between the gas and a heat-transfer fluid.

McBride, Troy O; Bell, Alexander; Bollinger, Benjamin R; Shang, Andrew; Chmiel, David; Richter, Horst; Magari, Patrick; Cameron, Benjamin

2013-07-02T23:59:59.000Z

116

Residential Multi-Function Gas Heat Pump: Efficient Engine-Driven...  

Office of Environmental Management (EM)

will build on system concepts and technical solutions developed for an 11-ton packaged natural gas heat pump. Residential Multi-Function Gas Heat Pump More Documents &...

117

Forming liquid sprays in compressed-gas energy storage systems for effective heat exchange  

DOE Patents [OSTI]

In various embodiments, efficiency of energy storage and recovery systems compressing and expanding gas is improved via heat exchange between the gas and a heat-transfer fluid.

McBride, Troy O.; Bell, Alexander; Bollinger, Benjamin R.

2012-08-07T23:59:59.000Z

118

Grid-region heat transfer in a gas solid fluidized bed  

SciTech Connect (OSTI)

The grid region heat transfer to a horizontal tube in a gas-solid fluidized bed was studied experimentally and theoretically. A preliminary experimental study was first conducted to investigate semi-quantitatively the heat transfer characteristics in the grid region as well as in the bubbling region of the gas-solid fluidized bed using a simple hot water circulation system. Experimental parameters included particle size, static bed height, superficial gas velocity, distributor open area, distributor hole sizes, distributor hole numbers, and vertical locations of the heating tube. An additional experimental study was then carried out to study quantitatively the heat transfer coefficient in each grid region phase, i.e., jet phase, emulsion phase and dead phase using an artificial jet and an electrically heated tube. The observed heat transfer coefficients for each phase were correlated as a function of experimental parameters. The observed results are also compared with results estimated from a heat transfer model, which is based on plausible heat transfer mechanisms in the grid region of a gas-solid fluidized bed.

Wang, R.C.

1986-01-01T23:59:59.000Z

119

System Modeling of Gas Engine Driven Heat Pump  

SciTech Connect (OSTI)

To improve the system performance of the GHP, modeling and experimental study has been made by using desiccant system in cooling operation (particularly in high humidity operations) and suction line waste heat recovery to augment heating capacity and efficiency. The performance of overall GHP system has been simulated by using ORNL Modulating Heat Pump Design Software, which is used to predict steady-state heating and cooling performance of variable-speed vapor compression air-to-air heat pumps for a wide range of operational variables. The modeling includes: (1) GHP cycle without any performance improvements (suction liquid heat exchange and heat recovery) as a baseline (both in cooling and heating mode), (2) the GHP cycle in cooling mode with desiccant system regenerated by waste heat from engine incorporated, (3) GHP cycle in heating mode with heat recovery (recovered heat from engine). According to the system modeling results, by using desiccant system regenerated by waste heat from engine, the SHR can be lowered to 40%. The waste heat of the gas engine can boost the space heating efficiency by 25% in rated operating conditions.

Mahderekal, Isaac [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL); Shen, Bo [ORNL] [ORNL; Vineyard, Edward [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL)

2012-01-01T23:59:59.000Z

120

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

SciTech Connect (OSTI)

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

Lekov, Alex; Franco, Victor; Meyers, Steve

2010-05-14T23:59:59.000Z

Note: This page contains sample records for the topic "gas water heating" 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

Field Monitoring Protocol: Heat Pump Water Heaters  

SciTech Connect (OSTI)

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

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

2013-02-01T23:59:59.000Z

122

Advances in the Research of Heat Pump Water Heaters  

E-Print Network [OSTI]

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

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

2006-01-01T23:59:59.000Z

123

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

Energy Savers [EERE]

Building America Webinar: Central Multifamily Water Heating Systems Building America Webinar: Central Multifamily Water Heating Systems January 21, 2015 11:00AM to 12:30PM MST...

124

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...

125

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

SciTech Connect (OSTI)

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

Not Available

2012-01-01T23:59:59.000Z

126

High Water Heating Bills on Lockdown at Idaho Jail | Department...  

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

High Water Heating Bills on Lockdown at Idaho Jail High Water Heating Bills on Lockdown at Idaho Jail August 19, 2010 - 12:05pm Addthis The Blaine County Public Safety Facility...

127

City of Sunset Valley- Solar Water Heating Rebate Program  

Broader source: Energy.gov [DOE]

The City of Sunset Valley offers rebates to local homeowners who install solar water heating systems on their properties. The local rebate acts as an add-on to the solar water heating rebates that...

128

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

Energy Savers [EERE]

Building America Webinar: Central Multifamily Water Heating Systems Building America Webinar: Central Multifamily Water Heating Systems January 21, 2015 3:00PM to 4:30PM EST This...

129

New Advanced System Utilizes Industrial Waste Heat to Power Water...  

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

Water Reuse ADVANCED MANUFACTURING OFFICE New Advanced System Utilizes Industrial Waste Heat to Power Water Purification Introduction As population growth and associated factors...

130

Measurement and analysis of gas turbine blade endwall heat transfer  

E-Print Network [OSTI]

the aerodynamic flow and external heat transfer distribution around the airfoils and end-wall surfaces. A stationary 5 vane linear cascade is designed and developed to investigate gas turbine blade endwall heat transfer and flow. The test cascade is instrumented...

Lee, Joon Ho

2001-01-01T23:59:59.000Z

131

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

132

Gas Water Heater Energy Losses  

E-Print Network [OSTI]

hr) 2. Pilot Input Rate (Btu/hr) 3. Excess Air (%) 4. Off-atm) 14. Higher Heating Value (Btu/SCF) 1028.0 15. SpecificProtection Tubes R (hr*ft2*F/Btu)? Fitting Emissivity SCREEN

Biermayer, Peter

2012-01-01T23:59:59.000Z

133

LOW COST HEAT PUMP WATER HEATER (HPWH)  

SciTech Connect (OSTI)

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

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

2006-01-01T23:59:59.000Z

134

PARAMETER ESTIMATION BASED MODELS OF WATER SOURCE HEAT PUMPS  

E-Print Network [OSTI]

PARAMETER ESTIMATION BASED MODELS OF WATER SOURCE HEAT PUMPS By HUI JIN Bachelor of Science validation of the water-to-air heat pump model. It's hard to find any words to express the thanks to my BASED MODELS OF WATER SLOURCE HEAT PUMPS Thesis Approved: Thesis Adviser Dean of the Graduate College ii

135

AIR QUALITY IMPACTS OF LIQUEFIED NATURAL GAS IN THE SOUTH COAST AIR BASIN OF CALIFORNIA  

E-Print Network [OSTI]

Gas Industrial Natural Gas Combustion (Unspecified) CO lb/MMcf Commercial Natural Gas Combustion - Water HeatingCommercial Natural Gas Combustion - Space Heating NO X CO

Carerras-Sospedra, Marc

2012-01-01T23:59:59.000Z

136

Method of coverning the working gas temperature of a solar heated hot gas engine  

SciTech Connect (OSTI)

A closed-cycle hot gas engine heated by solar radiation is provided with a governing system varying the working gas pressure so as to vary the power output at a constant high temperature level of the working gas and-at least partly-at a constant engine speed.

Almstrom, S.-H.; Nelving, H.G.

1984-07-03T23:59:59.000Z

137

Method of governing the working gas temperature of a solar heated hot gas engine  

SciTech Connect (OSTI)

A closed-cycle hot gas engine heated by solar radiation is provided with a governing system varying the working gas pressure so as to vary the power output at a constant high temperature level of the working gas and-at least partly-at a constant engine speed.

Almstrom, S.H.; Nelving, H.G.

1984-07-03T23:59:59.000Z

138

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

E-Print Network [OSTI]

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

J. Stene

139

Water Extraction from Coal-Fired Power Plant Flue Gas  

SciTech Connect (OSTI)

The overall objective of this program was to develop a liquid disiccant-based flue gas dehydration process technology to reduce water consumption in coal-fired power plants. The specific objective of the program was to generate sufficient subscale test data and conceptual commercial power plant evaluations to assess process feasibility and merits for commercialization. Currently, coal-fired power plants require access to water sources outside the power plant for several aspects of their operation in addition to steam cycle condensation and process cooling needs. At the present time, there is no practiced method of extracting the usually abundant water found in the power plant stack gas. This project demonstrated the feasibility and merits of a liquid desiccant-based process that can efficiently and economically remove water vapor from the flue gas of fossil fuel-fired power plants to be recycled for in-plant use or exported for clean water conservation. After an extensive literature review, a survey of the available physical and chemical property information on desiccants in conjunction with a weighting scheme developed for this application, three desiccants were selected and tested in a bench-scale system at the Energy and Environmental Research Center (EERC). System performance at the bench scale aided in determining which desiccant was best suited for further evaluation. The results of the bench-scale tests along with further review of the available property data for each of the desiccants resulted in the selection of calcium chloride as the desiccant for testing at the pilot-scale level. Two weeks of testing utilizing natural gas in Test Series I and coal in Test Series II for production of flue gas was conducted with the liquid desiccant dehumidification system (LDDS) designed and built for this study. In general, it was found that the LDDS operated well and could be placed in an automode in which the process would operate with no operator intervention or adjustment. Water produced from this process should require little processing for use, depending on the end application. Test Series II water quality was not as good as that obtained in Test Series I; however, this was believed to be due to a system upset that contaminated the product water system during Test Series II. The amount of water that can be recovered from flue gas with the LDDS is a function of several variables, including desiccant temperature, L/G in the absorber, flash drum pressure, liquid-gas contact method, and desiccant concentration. Corrosion will be an issue with the use of calcium chloride as expected but can be largely mitigated through proper material selection. Integration of the LDDS with either low-grade waste heat and or ground-source heating and cooling can affect the parasitic power draw the LDDS will have on a power plant. Depending on the amount of water to be removed from the flue gas, the system can be designed with no parasitic power draw on the power plant other than pumping loads. This can be accomplished in one scenario by taking advantage of the heat of absorption and the heat of vaporization to provide the necessary temperature changes in the desiccant with the flue gas and precipitates that may form and how to handle them. These questions must be addressed in subsequent testing before scale-up of the process can be confidently completed.

Bruce C. Folkedahl; Greg F. Weber; Michael E. Collings

2006-06-30T23:59:59.000Z

140

Low-Cost Gas Heat Pump for Building Space Heating  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeatMulti-Dimensionalthe10IO1OP001Long-Term StorageDepartmentSystem for

Note: This page contains sample records for the topic "gas water heating" 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

Heat Pump Water Heaters | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun with Bigfront.jpgcommunity200cell 9HarveyWellnessFebruaryWater Heaters Heat

142

Introduction of Heat Recovery Chiller Control and Water System Design  

E-Print Network [OSTI]

The styles, feature and main concerns of heat recovery water system are discussed, and the entering condenser water temperature control is recommended for higher chiller efficiency and reliable operation. Three optimized water system designs...

Jia, J.

2006-01-01T23:59:59.000Z

143

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

SciTech Connect (OSTI)

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

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

2013-07-01T23:59:59.000Z

144

Indriect Measurement Of Nitrogen In A Mult-Component Natural Gas By Heating The Gas  

DOE Patents [OSTI]

Methods of indirectly measuring the nitrogen concentration in a natural gas by heating the gas. In two embodiments, the heating energy is correlated to the speed of sound in the gas, the diluent concentrations in the gas, and constant values, resulting in a model equation. Regression analysis is used to calculate the constant values, which can then be substituted into the model equation. If the diluent concentrations other than nitrogen (typically carbon dioxide) are known, the model equation can be solved for the nitrogen concentration.

Morrow, Thomas B. (San Antonio, TX); Behring, II, Kendricks A. (Torrance, CA)

2004-06-22T23:59:59.000Z

145

Sour gas injection for use with in situ heat treatment  

DOE Patents [OSTI]

Systems, methods, and heaters for treating a subsurface formation are described herein. At least one method for providing acidic gas to a subsurface formation is described herein. The method may include providing heat from one or more heaters to a portion of a subsurface formation; producing fluids that include one or more acidic gases from the formation using a heat treatment process. At least a portion of one of the acidic gases may be introduced into the formation, or into another formation, through one or more wellbores at a pressure below a lithostatic pressure of the formation in which the acidic gas is introduced.

Fowler, Thomas David (Houston, TX)

2009-11-03T23:59:59.000Z

146

Simplified method for determining heat of combustion of natural gas  

SciTech Connect (OSTI)

A simplified technique for determination of the heat of combustion of natural gas has been developed. It is a variation of the previously developed technique wherein the carrier air, in which the test sample was burnt, was oxygen enriched to adjust the mole fraction of oxygen in the combustion product gases up to that in the carrier air. The new technique eliminates the need for oxygen enrichment of the experimental mixtures and natural gas samples and has been found to predict their heats of combustion to an uncertainty of the order of 1 percent.

Singh, J.J.; Chegini, H.; Mall, G.H.

1987-04-01T23:59:59.000Z

147

Low-pressure-ratio regenerative exhaust-heated gas turbine  

SciTech Connect (OSTI)

A design study of coal-burning gas-turbine engines using the exhaust-heated cycle and state-of-the-art components has been completed. In addition, some initial experiments on a type of rotary ceramic-matrix regenerator that would be used to transfer heat from the products of coal combustion in the hot turbine exhaust to the cool compressed air have been conducted. Highly favorable results have been obtained on all aspects on which definite conclusions could be drawn.

Tampe, L.A.; Frenkel, R.G.; Kowalick, D.J.; Nahatis, H.M.; Silverstein, S.M.; Wilson, D.G.

1991-01-01T23:59:59.000Z

148

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.

149

Alabama Heat Content of Natural Gas Consumed  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelinesProved Reserves (Billion CubicCubic Feet) Base Gas)1,727 1,342Increases (Billion2009

150

Alabama Heat Content of Natural Gas Consumed  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelinesProved Reserves (Billion CubicCubic Feet) Base Gas)1,727 1,342Increases

151

Iowa Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14 15 0 0 0Year Jan Feb3,151,8872009 2010 2011

152

Iowa Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14 15 0 0 0Year Jan Feb3,151,8872009 2010

153

Kansas Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14 15 0 0Extensions (Billion2009 2010 2011

154

Kansas Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14 15 0 0Extensions (Billion2009 2010

155

Kentucky Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14 15 0MonthIncreases (Billion Cubic2009 2010

156

Kentucky Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14 15 0MonthIncreases (Billion Cubic2009

157

Louisiana Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14343 342 3289 0 0 0 0Feet)2009 2010 2011

158

Louisiana Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14343 342 3289 0 0 0 0Feet)2009 2010

159

Maine Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14343 342Cubic

160

Maine Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14343 342CubicSep-14 Oct-14 Nov-14 Dec-14

Note: This page contains sample records for the topic "gas water heating" 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

Maryland Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14343 342CubicSep-140.0 0.0

162

Maryland Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14343 342CubicSep-140.0 0.0Sep-14 Oct-14

163

Massachusetts Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14343Decade81 170 115 89

164

Massachusetts Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14343Decade81 170 115 89Sep-14 Oct-14 Nov-14

165

Michigan Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14343Decade81Feet)3,174Feet)Sales2009

166

Michigan Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0

167

Minnesota Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 04 19 15 15 15continues, with theMay 20032009

168

Minnesota Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 04 19 15 15 15continues, with theMay

169

Mississippi Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 04 19 15 15ThousandExtensionsSales (Billion2009

170

Mississippi Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 04 19 15 15ThousandExtensionsSales

171

Missouri Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 04 19 15Year JanThousand Cubic0 0 0 2011

172

Missouri Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 04 19 15Year JanThousand Cubic0 0 0 2011Sep-14

173

Montana Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 04 19343 369 384 388 413New

174

Montana Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 04 19343 369 384 388 413NewSep-14 Oct-14 Nov-14

175

Colorado Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 633 622 56623 46 47Extensions (BillionSales

176

Colorado Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 633 622 56623 46 47Extensions (BillionSalesSep-14

177

Connecticut Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 633 622 56623 4623 42 180Number ofFuel2009 2010 2011

178

Connecticut Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 633 622 56623 4623 42 180Number ofFuel2009 2010

179

Delaware Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 633 622 56623 4623 42Year Jan Feb Mar132009 2010 2011

180

Delaware Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 633 622 56623 4623 42Year Jan Feb Mar132009 2010

Note: This page contains sample records for the topic "gas water heating" 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

Florida Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 633 6221,2372003ofDec.AdjustmentsDecreasesSales2009

182

Florida Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 633

183

Georgia Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 1 0 058.5 57.1 54.8 49.4 50.987.193.52009 2010

184

Georgia Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 1 0 058.5 57.1 54.8 49.4 50.987.193.52009

185

Hawaii Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 1 0 058.588,219 719,4351998 19992009 2010 2011

186

Hawaii Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 1 0 058.588,219 719,4351998 19992009 2010

187

Idaho Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 1 0Decade Year-0 Year-1Thousand

188

Idaho Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 1 0Decade Year-0 Year-1ThousandSep-14 Oct-14

189

Illinois Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 1 0Decade (Million

190

Illinois Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 1 0Decade (MillionSep-14 Oct-14 Nov-14 Dec-14

191

Indiana Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14 15 0 0 0 0 1996-2005. 61,707 58,6938 8

192

Indiana Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14 15 0 0 0 0 1996-2005. 61,707 58,6938

193

Pennsylvania Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas,095,3628,527 9,029 8,794CubicExports ofCubic17Feet)Sales2009

194

California Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 633 622 566 8021 1Reserves,835Feet)(Million2009

195

Nevada Heat Content of Natural Gas Consumed  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelinesProved ReservesFeet) Year Jan Feb MarthroughYear Jan Feb MarDry Natural Gas

196

Nevada Heat Content of Natural Gas Consumed  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelinesProved ReservesFeet) Year Jan Feb MarthroughYear Jan Feb MarDry Natural GasSep-14

197

Rock Hill Utilities- Water Heater and Heat Pump Rebate Program  

Broader source: Energy.gov [DOE]

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

198

Improving Heating System Operations Using Water Re-Circulation  

E-Print Network [OSTI]

In order to solve the imbalance problem of a heating system, brought about by consumer demand and regulation, and save the electricity energy consumed by a circulation pump, a water mixing and pressure difference control heating system is proposed...

Li, F.; Han, J.

2006-01-01T23:59:59.000Z

199

Simulation Models for Improved Water Heating Systems  

E-Print Network [OSTI]

Storage Water Heater .point for modeling storage water heaters. The algorithmsfired, natural draft storage water heater. Figure 1 shows a

Lutz, Jim

2014-01-01T23:59:59.000Z

200

Water-loop heat pump systems  

SciTech Connect (OSTI)

Water-loop heat pump (WLHP) systems are reliable, versatile, energy-efficient alternatives to conventional systems such as packaged rooftop or central chiller systems. These systems offer low installed costs, unparalleled design flexibility, and an inherent ability to recover heat in a variety of commercial and multifamily residential buildings for both new construction and retrofit markets. Southern California Edison Co. (SCE) teamed with EPRI to develop a comprehensive design guide for WLHP systems that incorporated recent research by EPRI, SCE, and others. The project team reviewed current literature, equipment data, and design guidelines from equipment manufacturers. They next discussed design and application practices with consulting engineers as well as design and building contractors. The team also ran extensive computer simulations on commercial and multifamily residential building models for Southern California, both to determine the sensitivity of energy use to WLHP system design parameters and to establish optimal design parameters. This information culminated in a comprehensive engineering guide. Volume 1 of this report, provides step-by-step technical design data for selection, application, and specification of WLHP systems. This guide emphasizes energy-efficient design principles and incorporates the findings of the computer simulations and research. For example, it recommends lowering the loop temperature in buildings dominated by internal loads. Reducing the loop temperature from 90 to 80[degrees]F provides a 7--10% savings in the total system energy in Southern California climate areas. Other recommendations include (1) installing a cooling tower with a propeller fan, which uses one fourth to one third of the energy of a cooling tower with a centrifugal fan; and (2) incorporating variable-speed pumps in conjunction with two-position valves in the heat pumps to reduce the system pump energy use by up to 50%.

Eley, C.; Hydeman, M. (Eley (Charles) Associates, San Francisco, CA (United States))

1992-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas water heating" 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

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

E-Print Network [OSTI]

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

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

2010-01-01T23:59:59.000Z

202

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

203

Fort Pierce Utilities Authority- Solar Water Heating Rebate (Florida)  

Broader source: Energy.gov [DOE]

'''''Fort Pierce Utilities Authority has suspended the Solar Water Heating rebate program until 2013. Contact the utility for more information on these offerings.'''''

204

Duquesne Light Company- Residential Solar Water Heating Program  

Broader source: Energy.gov [DOE]

Duquesne Light provides rebates to its residential customers for purchasing and installing qualifying solar water heating systems. Eligible systems may receive a flat rebate of $286 per qualifying...

205

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.

206

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

E-Print Network [OSTI]

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

J. Stene

2008-01-01T23:59:59.000Z

207

NSTAR (Gas)- Commercial Energy Efficiency Programs  

Broader source: Energy.gov [DOE]

NSTAR Gas offers incentives for their commercial customers to save energy in existing facilities. Rebates are for high efficiency gas space heating equipment, water heating equipment, infrared...

208

Improved heat recovery and high-temperature clean-up for coal-gas fired combustion turbines  

SciTech Connect (OSTI)

This study investigates the performance of an Improved Heat Recovery Method (IHRM) applied to a coal-gas fired power-generating system using a high-temperature clean-up. This heat recovery process has been described by Higdon and Lynn (1990). The IHRM is an integrated heat-recovery network that significantly increases the thermal efficiency of a gas turbine in the generation of electric power. Its main feature is to recover both low- and high-temperature heat reclaimed from various gas streams by means of evaporating heated water into combustion air in an air saturation unit. This unit is a packed column where compressed air flows countercurrently to the heated water prior to being sent to the combustor, where it is mixed with coal-gas and burned. The high water content of the air stream thus obtained reduces the amount of excess air required to control the firing temperature of the combustor, which in turn lowers the total work of compression and results in a high thermal efficiency. Three designs of the IHRM were developed to accommodate three different gasifying process. The performances of those designs were evaluated and compared using computer simulations. The efficiencies obtained with the IHRM are substantially higher those yielded by other heat-recovery technologies using the same gasifying processes. The study also revealed that the IHRM compares advantageously to most advanced power-generation technologies currently available or tested commercially. 13 refs., 34 figs., 10 tabs.

Barthelemy, N.M.; Lynn, S.

1991-07-01T23:59:59.000Z

209

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

210

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

E-Print Network [OSTI]

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

Lekov, Alex

2011-01-01T23:59:59.000Z

211

IEA Heat Pump Conference 2011, 16 -19 May 2011, Tokyo, Japan DYNAMIC MODELING OF AN AIR SOURCE HEAT PUMP WATER  

E-Print Network [OSTI]

. Compared to those water heaters, heat pump water heating systems can supply much more heat just with the same amount of electric input used for electric water heaters. The ASHPWH absorbs heat from the ambient- 1 - 10th IEA Heat Pump Conference 2011, 16 - 19 May 2011, Tokyo, Japan DYNAMIC MODELING OF AN AIR

Paris-Sud XI, Université de

212

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

213

Research and Development Roadmap for Water Heating Technologies  

SciTech Connect (OSTI)

Although water heating is an important energy end-use in residential and commercial buildings, efficiency improvements in recent years have been relatively modest. However, significant advancements related to higher efficiency equipment, as well as improved distribution systems, are now viable. DOE support for water heating research, development and demonstration (RD&D) could provide the impetus for commercialization of these advancements.

Goetzler, William [Navigant Consulting Inc.; Gagne, Claire [Navigant Consulting Inc.; Baxter, Van D [ORNL; Lutz, James [Lawrence Berkeley National Laboratory (LBNL); Merrigan, Tim [National Renewable Energy Laboratory (NREL); Katipamula, Srinivas [Pacific Northwest National Laboratory (PNNL)

2011-10-01T23:59:59.000Z

214

A Heating Model for the Millennium Gas Run  

E-Print Network [OSTI]

The comparison between observations of galaxy clusters thermo-dynamical properties and theoretical predictions suggests that non-gravitational heating needs to be added into the models. We implement an internally self-consistent heating scheme into GADGET-2 for the third (and fourth) run of the Millennium gas project (Pearce et al. in preparation), a set of four hydrodynamical cosmological simulations with N=2(5x10^8) particles and with the same volume (L=500 h-1 Mpc) and structures as the the N-body Millennium Simulation (Springel et al. 2005). Our aim is to reproduce the observed thermo-dynamical properties of galaxy clusters.

L. Gazzola; F. R. Pearce

2006-11-22T23:59:59.000Z

215

Two Stage Vapor Compression Heat Pump with Solution Circuits: Catering to Simultaneous Chilling and Water Heating Needs  

E-Print Network [OSTI]

results indicate that the two stage VCHSC can achiev~ cooling coefficient of performances as high as 1.04 while pumping heat through a lift of 194?F (10S0C). Comparison is made with a system consisting of a vapor compressor chiller and a gas fired... conditioning and hot water for various uses will be assessed. comparison is made with a system consisting of a vapor compressor chiller and a gas fired furnace (option 2). The basis for comparison being: a) the total primary energy usage, b) the cost...

Rane, M. V.; Radermacher, R.

216

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

E-Print Network [OSTI]

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

Lekov, Alex

2011-01-01T23:59:59.000Z

217

Study of the Heating Load of a Manufactured Space with a Gas-fired Radiant Heating System  

E-Print Network [OSTI]

A thermal balance mathematics model of a manufactured space with a gas-fired radiant heating system is established to calculate the heating load. Computer programs are used to solve the model. Envelope internal surface temperatures under different...

Zheng, X.; Dong, Z.

2006-01-01T23:59:59.000Z

218

A comparison of ground source heat pumps and micro-combined heat and power as residential greenhouse gas reduction strategies  

E-Print Network [OSTI]

Both ground source heat pumps operating on electricity and micro-combined heat and power systems operating on fossil fuels offer potential for the reduction of green house gas emissions in comparison to the conventional ...

Guyer, Brittany (Brittany Leigh)

2009-01-01T23:59:59.000Z

219

Economic Analysis and Comparison of Waste Water Resource Heat Pump Heating and Air-Conditioning System  

E-Print Network [OSTI]

Based on the heating and air-conditioning system of a high-rise residential building in Northern city, this paper provides a discussion on the choice and matching of different types of Waste Water Resource Heat Pump (WWRHP) heating and air...

Zhang, C.; Wang, S.; Chen, H.; Shi, Y.

2006-01-01T23:59:59.000Z

220

FEMP Designated Product Assessment for Commercial Gas Water Heaters  

E-Print Network [OSTI]

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

Lutz, Jim

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas water heating" 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

Simulation Models for Improved Water Heating Systems  

E-Print Network [OSTI]

and Simulation of a Smart Water Heater. ” In Workshop inFreezers, Furnaces, Water Heaters, Room and Central AirNovember. ADL. 1982b. Water Heater Computer Model User’s

Lutz, Jim

2014-01-01T23:59:59.000Z

222

Bubble columns for condensation at high concentrations of noncondensable gas: Heat-transfer model and experiments  

E-Print Network [OSTI]

Carrier gas based thermodynamic cycles are common in water desalination applications. These cycles often require condensation of water vapor out of the carrier gas stream. As the carrier gas is most likely a noncondensable ...

Narayan, G. Prakash

223

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

224

GREENHOUSE GAS REDUCTION POTENTIAL WITH COMBINED HEAT AND POWER WITH DISTRIBUTED GENERATION PRIME MOVERS - ASME 2012  

SciTech Connect (OSTI)

Pending or recently enacted greenhouse gas regulations and mandates are leading to the need for current and feasible GHG reduction solutions including combined heat and power (CHP). Distributed generation using advanced reciprocating engines, gas turbines, microturbines and fuel cells has been shown to reduce greenhouse gases (GHG) compared to the U.S. electrical generation mix due to the use of natural gas and high electrical generation efficiencies of these prime movers. Many of these prime movers are also well suited for use in CHP systems which recover heat generated during combustion or energy conversion. CHP increases the total efficiency of the prime mover by recovering waste heat for generating electricity, replacing process steam, hot water for buildings or even cooling via absorption chilling. The increased efficiency of CHP systems further reduces GHG emissions compared to systems which do not recover waste thermal energy. Current GHG mandates within the U.S Federal sector and looming GHG legislation for states puts an emphasis on understanding the GHG reduction potential of such systems. This study compares the GHG savings from various state-of-the- art prime movers. GHG reductions from commercially available prime movers in the 1-5 MW class including, various industrial fuel cells, large and small gas turbines, micro turbines and reciprocating gas engines with and without CHP are compared to centralized electricity generation including the U.S. mix and the best available technology with natural gas combined cycle power plants. The findings show significant GHG saving potential with the use of CHP. Also provided is an exploration of the accounting methodology for GHG reductions with CHP and the sensitivity of such analyses to electrical generation efficiency, emissions factors and most importantly recoverable heat and thermal recovery efficiency from the CHP system.

Curran, Scott [ORNL; Theiss, Timothy J [ORNL; Bunce, Michael [ORNL

2012-01-01T23:59:59.000Z

225

Retrofitting Combined Space and Water Heating Systems: Laboratory Tests  

SciTech Connect (OSTI)

Better insulated and tighter homes can often use a single heating plant for both space and domestic water heating. These systems, called dual integrated appliances (DIA) or combination systems, can operate at high efficiency and eliminate combustion safety issues associated by using a condensing, sealed combustion heating plant. Funds were received to install 400 DIAs in Minnesota low-income homes. The NorthernSTAR DIA laboratory was created to identify proper system components, designs, operating parameters, and installation procedures to assure high efficiency of field installed systems. Tests verified that heating loads up to 57,000 Btu/hr can be achieved with acceptable return water temperatures and supply air temperatures.

Schoenbauer, B.; Bohac, D.; Huelman, P.; Olson, R.; Hewitt, M.

2012-10-01T23:59:59.000Z

226

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

227

Heat Exchangers for Solar Water Heating Systems | Department of Energy  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy UsageAUDITVehicles »Exchange Visitors ProgramEnergyGasDeployment |Exchangers for

228

Optimized design of a heat exchanger for an air-to-water reversible heat pump working with propane (R290)  

E-Print Network [OSTI]

Optimized design of a heat exchanger for an air-to-water reversible heat pump working with propane-to-water reversible heat pump unit was carried out using two different fin-and-tube heat exchanger ``coil'' designs concepts. The performance of the heat pump was evaluated for each coil design at different superheat

Fernández de Córdoba, Pedro

229

Workshop on Condensing Heating and Water Heating Equipment  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomen Owned SmallOf TheViolations |Join the ChallengeWorkshop on Condensing Heating and

230

Florida Sunshine -- Natural Source for Heating Water  

SciTech Connect (OSTI)

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

Not Available

2002-05-01T23:59:59.000Z

231

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

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

directly replace the existing forced air furnace and water heater, and consist of a high efficiency water heater or boiler and an optimized hydronic air handler. The air handlers...

232

Question of the Week: How Do You Reduce Your Water Heating Costs...  

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

Reduce Your Water Heating Costs Question of the Week: How Do You Reduce Your Water Heating Costs February 19, 2009 - 1:39pm Addthis Water heating can account for a significant...

233

Water recovery using waste heat from coal fired power plants.  

SciTech Connect (OSTI)

The potential to treat non-traditional water sources using power plant waste heat in conjunction with membrane distillation is assessed. Researchers and power plant designers continue to search for ways to use that waste heat from Rankine cycle power plants to recover water thereby reducing water net water consumption. Unfortunately, waste heat from a power plant is of poor quality. Membrane distillation (MD) systems may be a technology that can use the low temperature waste heat (<100 F) to treat water. By their nature, they operate at low temperature and usually low pressure. This study investigates the use of MD to recover water from typical power plants. It looks at recovery from three heat producing locations (boiler blow down, steam diverted from bleed streams, and the cooling water system) within a power plant, providing process sketches, heat and material balances and equipment sizing for recovery schemes using MD for each of these locations. It also provides insight into life cycle cost tradeoffs between power production and incremental capital costs.

Webb, Stephen W.; Morrow, Charles W.; Altman, Susan Jeanne; Dwyer, Brian P.

2011-01-01T23:59:59.000Z

234

Solar Water Heating Requirement for New Residential Construction  

Broader source: Energy.gov [DOE]

In June 2008, Hawaii enacted legislation, [http://www.capitol.hawaii.gov/session2008/bills/SB644_CD1_.htm SB 644], with the intent to require solar water-heating (SWH) systems to be installed on...

235

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

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

storage technology, but at a fraction of the cost. As we move toward a low-carbon future, electricity storage is critical, and renewable water heating is a low-cost option to help...

236

Minnesota Power- Solar-Thermal Water Heating Rebate Program  

Broader source: Energy.gov [DOE]

Minnesota Power offers a 25% rebate for qualifying solar thermal water heating systems. The maximum award for single-family customers is $2,000 per customer; $4,000 for 2-3 family unit buildings; ...

237

GreyStone Power- Solar Water Heating Program  

Broader source: Energy.gov [DOE]

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

238

Beaches Energy Services- Solar Water Heating Rebate Program  

Broader source: Energy.gov [DOE]

Beaches Energy Services offers a solar water heating rebate to their residential customers. This $500 rebate applies to new systems which are properly installed and certified. New construction and...

239

South River EMC- Solar Water Heating Rebate Program  

Broader source: Energy.gov [DOE]

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

240

Temperatures, heat flow, and water chemistry from drill holes...  

Open Energy Info (EERE)

Temperatures, heat flow, and water chemistry from drill holes in the Raft River geothermal system, Cassia County, Idaho Jump to: navigation, search OpenEI Reference LibraryAdd to...

Note: This page contains sample records for the topic "gas water heating" 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

Lake Worth Utilities- Residential Solar Water Heating Rebate Program  

Broader source: Energy.gov [DOE]

The City of Lake Worth Utilities (CLWU), in conjunction with Florida Municipal Power Agency, offers rebates to customers who purchase and install a solar water heating system for residential use. A...

242

City of Tallahassee Utilities- Solar Water Heating Rebate  

Broader source: Energy.gov [DOE]

The City of Tallahassee Utilities offers a $450 rebate to homeowners* and homebuilders who install a solar water-heating system. This rebate may be applied to a first-time installation or to the...

243

Northwest Energy Efficiency Alliance- Smart Water Heat Rebate Program (Montana)  

Broader source: Energy.gov [DOE]

The Northwest Energy Efficiency Alliance (NEEA) is offering a rebate program for homeowners who purchase and install an eligible heat pump water heater. A rebate of $750 is offered for qualifying...

244

Northwest Energy Efficiency Alliance- Smart Water Heat Rebate Program (Idaho)  

Broader source: Energy.gov [DOE]

The Northwest Energy Efficiency Alliance (NEEA) is offering a rebate program for homeowners who purchase and install an eligible heat pump water heater. A rebate of $750 is offered for qualifying...

245

Northwest Energy Efficiency Alliance- Smart Water Heat Rebate Program (Oregon)  

Broader source: Energy.gov [DOE]

The Northwest Energy Efficiency Alliance (NEEA) is offering a rebate program for homeowners who purchase and install an eligible heat pump water heater. A rebate of $750 is offered for qualifying...

246

Northwest Energy Efficiency Alliance- Smart Water Heat Rebate Program (Washington)  

Broader source: Energy.gov [DOE]

The Northwest Energy Efficiency Alliance (NEEA) is offering a rebate program for homeowners who purchase and install an eligible heat pump water heater. A rebate of $750 is offered for qualifying...

247

City of Palo Alto Utilities- Solar Water Heating Program  

Broader source: Energy.gov [DOE]

City of Palo Alto Utilities is offering incentives for their residential, commercial and industrial customers to install solar water heating systems on their homes and facilities with a goal of 1...

248

Water-to-Air Heat Pump Performance with Lakewater  

E-Print Network [OSTI]

The performance of water-to-air heat pumps using lakewater as the heat source and sink has been investigated. Direct cooling with deep lakewater has also been considered. Although the emphasis of the work was with southern lakes, many results also...

Kavanaugh, S.; Pezent, M. C.

1989-01-01T23:59:59.000Z

249

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

250

Corrosion protection of steel in ammonia/water heat pumps  

DOE Patents [OSTI]

Corrosion of steel surfaces in a heat pump is inhibited by adding a rare earth metal salt to the heat pump's ammonia/water working fluid. In preferred embodiments, the rare earth metal salt includes cerium, and the steel surfaces are cerated to enhance the corrosion-inhibiting effects.

Mansfeld, Florian B.; Sun, Zhaoli

2003-10-14T23:59:59.000Z

251

Optimization and heat and water integration for biodiesel production  

E-Print Network [OSTI]

1 Optimization and heat and water integration for biodiesel production from cooking oil generation of biodiesel using waste cooking oil and algae oil. We consider 5 different technologies is to simultaneously optimize and heat integrate the production of biodiesel from each of the different oil sources

Grossmann, Ignacio E.

252

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

253

Advanced Energy and Water Recovery Technology from Low Grade Waste Heat  

SciTech Connect (OSTI)

The project has developed a nanoporous membrane based water vapor separation technology that can be used for recovering energy and water from low-temperature industrial waste gas streams with high moisture contents. This kind of exhaust stream is widely present in many industrial processes including the forest products and paper industry, food industry, chemical industry, cement industry, metal industry, and petroleum industry. The technology can recover not only the sensible heat but also high-purity water along with its considerable latent heat. Waste heats from such streams are considered very difficult to recover by conventional technology because of poor heat transfer performance of heat-exchanger type equipment at low temperature and moisture-related corrosion issues. During the one-year Concept Definition stage of the project, the goal was to prove the concept and technology in the laboratory and identify any issues that need to be addressed in future development of this technology. In this project, computational modeling and simulation have been conducted to investigate the performance of a nanoporous material based technology, transport membrane condenser (TMC), for waste heat and water recovery from low grade industrial flue gases. A series of theoretical and computational analyses have provided insight and support in advanced TMC design and experiments. Experimental study revealed condensation and convection through the porous membrane bundle was greatly improved over an impermeable tube bundle, because of the membrane capillary condensation mechanism and the continuous evacuation of the condensate film or droplets through the membrane pores. Convection Nusselt number in flue gas side for the porous membrane tube bundle is 50% to 80% higher than those for the impermeable stainless steel tube bundle. The condensation rates for the porous membrane tube bundle also increase 60% to 80%. Parametric study for the porous membrane tube bundle heat transfer performance was also done, which shows this heat transfer enhancement approach works well in a wide parameters range for typical flue gas conditions. Better understanding of condensing heat transfer mechanism for porous membrane heat transfer surfaces, shows higher condensation and heat transfer rates than non-permeable tubes, due to existence of the porous membrane walls. Laboratory testing has documented increased TMC performance with increased exhaust gas moisture content levels, which has exponentially increased potential markets for the product. The TMC technology can uniquely enhance waste heat recovery in tandem with water vapor recovery for many other industrial processes such as drying, wet and dry scrubber exhaust gases, dewatering, and water chilling. A new metallic substrate membrane tube development and molded TMC part fabrication method, provides an economical way to expand this technology for scaled up applications with less than 3 year payback expectation. A detailed market study shows a broad application area for this advanced waste heat and water recovery technology. A commercialization partner has been lined up to expand this technology to this big market. This research work led to new findings on the TMC working mechanism to improve its performance, better scale up design approaches, and economical part fabrication methods. Field evaluation work needs to be done to verify the TMC real world performance, and get acceptance from the industry, and pave the way for our commercial partner to put it into a much larger waste heat and waste water recovery market. This project is addressing the priority areas specified for DOE Industrial Technologies Program's (ITP's): Energy Intensive Processes (EIP) Portfolio - Waste Heat Minimization and Recovery platform.

Dexin Wang

2011-12-19T23:59:59.000Z

254

Regulation of Gas, Electric, and Water Companies (Maryland)  

Broader source: Energy.gov [DOE]

The Public Service Commission is responsible for regulating gas, electric, and water companies in the state. This legislation contains provisions for such companies, addressing planning and siting...

255

HYDROGEN PRODUCTION THROUGH WATER GAS SHIFT REACTION OVER NICKEL CATALYSTS.  

E-Print Network [OSTI]

??The progress in fuel cell technology has resulted in an increased interest towards hydrogen fuel. Consequently, water gas shift reaction has found a renewed significance.… (more)

Haryanto, Agus

2008-01-01T23:59:59.000Z

256

Water-Gas Samples At Valles Caldera - Redondo Geothermal Area...  

Open Energy Info (EERE)

Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Water-Gas Samples At Valles Caldera - Redondo Geothermal Area (Janik & Goff, 2002)...

257

Heat exchanger and water tank arrangement for passive cooling system  

DOE Patents [OSTI]

A water storage tank in the coolant water loop of a nuclear reactor contains a tubular heat exchanger. The heat exchanger has tube sheets mounted to the tank connections so that the tube sheets and tubes may be readily inspected and repaired. Preferably, the tubes extend from the tube sheets on a square pitch and then on a rectangular pitch there between. Also, the heat exchanger is supported by a frame so that the tank wall is not required to support all of its weight. 6 figures.

Gillett, J.E.; Johnson, F.T.; Orr, R.S.; Schulz, T.L.

1993-11-30T23:59:59.000Z

258

Simulation Study of Heat Transportation in an Aquifer about Well-water-source Heat Pump  

E-Print Network [OSTI]

The study of groundwater reinjection, pumping and heat transportation in an aquifer plays an important theoretical role in ensuring the stability of deep-well water reinjection and pumping as well as smooth reinjection. Based on the related...

Cong, X.; Liu, Y.; Yang, W.

2006-01-01T23:59:59.000Z

259

Discussions on Disposal Forms of Auxiliary Heat Source in Surface Water Heat Pump System  

E-Print Network [OSTI]

This paper presents two common forms of auxiliary heat source in surface water heat pump system and puts forward the idea that the disposal forms affect operation cost. It deduces operation cost per hour of the two forms. With a project...

Qian, J.; Sun, D.; Li, X.; Li, G.

2006-01-01T23:59:59.000Z

260

Heat pump water heater and method of making the same  

DOE Patents [OSTI]

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

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

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas water heating" 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

Rheology and Convective Heat Transfer of Colloidal Gas Aphrons in Horizontal Minichannels  

E-Print Network [OSTI]

Single-phase convective heat transfer in microchannels: aand Newell, M. E. , 1967. Heat transfer in fully developed3 /s at 130 W. Water CGA Heat Transfer Coefficient, h (W/m 2

Tseng, H.; Pilon, L.; Warrier, G.

2006-01-01T23:59:59.000Z

262

Ground and Water Source Heat Pump Performance and Design for Southern Climates  

E-Print Network [OSTI]

Ground and water source heat pump systems have very attractive performance characteristics when properly designed and installed. These systems typically consist of a water-to-air or water-to-water heat pump linked to a closed loop vertical...

Kavanaugh, S.

1988-01-01T23:59:59.000Z

263

Field Performance of Heat Pump Water Heaters in the Northeast  

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(tm), A.O. Smith Voltex(r), and Stiebel Eltron Accelera(r)300). Fourteen HPWHs were installed in Massachusetts and Rhode Island and monitored for over a year. Of the 14 units, ten were General Electric models (50 gallon units), two were Stiebel Eltron models (80 gallon units), and two were A.O. Smith models (one 60-gallon and one 80-gallon unit).

Shapiro, C.; Puttagunta, S.

2013-08-01T23:59:59.000Z

264

Piedmont EMC- Solar Water Heating Rebate Program  

Broader source: Energy.gov [DOE]

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

265

Austin Energy- Solar Water Heating Rebate  

Broader source: Energy.gov [DOE]

Austin Energy offers its residential, commercial, and municipal customers up front rebates or a low interest loan for the purchase and installation of solar hot water heaters. Because the program...

266

Direct-Contact Process Water Heating  

E-Print Network [OSTI]

treatment necessary null Produces 180°F water at 310 GPM which meets process requirements null Safety of system – Integrated PLC and flame safeguard controls null Hot water recovery rates – Faster recovery rate allows for increased product quality... benefits. Since the product produced at this site is a high value commodity, the site elected to keep the existing boiler system as a backup system. Controls for the DCWH and modification of existing boiler and storage tank PLC’s had to be upgraded...

Hamann, M. R.

2006-01-01T23:59:59.000Z

267

Installation package for a Sunspot Cascade Solar Water Heating System  

SciTech Connect (OSTI)

Elcam, Incorporated of Santa Barbara, California, has developed two solar water heating systems. The systems have been installed at Tempe, Arizona and San Diego, California. The systems consist of the following: collector, collector-tank water loop, solar tank, conventional tank and controls. General guidelines are provided which may be utilized in development of detailed instalation plans and specifications. In addition, it provides instruction on operation, maintenance and installation of solar hot water systems.

None

1980-09-01T23:59:59.000Z

268

Cornell's conversion of a coal fired heating plant to natural Gas -BACKGROUND: In December 2009, the Combined Heat and Power Plant  

E-Print Network [OSTI]

- BACKGROUND: In December 2009, the Combined Heat and Power Plant at Cornell Cornell's conversion of a coal fired heating plant to natural Gas the power plant #12;

Keinan, Alon

269

Energy recovery during expansion of compressed gas using power plant low-quality heat sources  

DOE Patents [OSTI]

A method of recovering energy from a cool compressed gas, compressed liquid, vapor, or supercritical fluid is disclosed which includes incrementally expanding the compressed gas, compressed liquid, vapor, or supercritical fluid through a plurality of expansion engines and heating the gas, vapor, compressed liquid, or supercritical fluid entering at least one of the expansion engines with a low quality heat source. Expansion engines such as turbines and multiple expansions with heating are disclosed.

Ochs, Thomas L. (Albany, OR); O'Connor, William K. (Lebanon, OR)

2006-03-07T23:59:59.000Z

270

Heat exchanger design for thermoelectric electricity generation from low temperature flue gas streams  

E-Print Network [OSTI]

An air-to-oil heat exchanger was modeled and optimized for use in a system utilizing a thermoelectric generator to convert low grade waste heat in flue gas streams to electricity. The NTU-effectiveness method, exergy, and ...

Latcham, Jacob G. (Jacob Greco)

2009-01-01T23:59:59.000Z

271

Experimental Study of Gas Turbine Blade Film Cooling and Heat Transfer  

E-Print Network [OSTI]

Modern gas turbine engines require higher turbine-entry gas temperature to improve their thermal efficiency and thereby their performance. A major accompanying concern is the heat-up of the turbine components which are already subject to high...

Narzary, Diganta P.

2010-10-12T23:59:59.000Z

272

Gas Turbine/Solar Parabolic Trough Hybrid Design Using Molten Salt Heat Transfer Fluid: Preprint  

SciTech Connect (OSTI)

Parabolic trough power plants can provide reliable power by incorporating either thermal energy storage (TES) or backup heat from fossil fuels. This paper describes a gas turbine / parabolic trough hybrid design that combines a solar contribution greater than 50% with gas heat rates that rival those of natural gas combined-cycle plants. Previous work illustrated benefits of integrating gas turbines with conventional oil heat-transfer-fluid (HTF) troughs running at 390?C. This work extends that analysis to examine the integration of gas turbines with salt-HTF troughs running at 450 degrees C and including TES. Using gas turbine waste heat to supplement the TES system provides greater operating flexibility while enhancing the efficiency of gas utilization. The analysis indicates that the hybrid plant design produces solar-derived electricity and gas-derived electricity at lower cost than either system operating alone.

Turchi, C. S.; Ma, Z.

2011-08-01T23:59:59.000Z

273

Optimization of Combustion Efficiency for Supplementally Fired Gas Turbine Cogenerator Exhaust Heat Receptors  

E-Print Network [OSTI]

A broad range of unique cogeneration schemes are being installed or considered for application in the process industries involving gas turbines with heat recovery from the exhaust gas. Depending on the turbine design, exhaust gases will range from...

Waterland, A. F.

1984-01-01T23:59:59.000Z

274

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

SciTech Connect (OSTI)

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

None

2010-09-01T23:59:59.000Z

275

Control of temperature and heat flux in a combustor using coal-derived gas of varying heat content. [Patent application  

SciTech Connect (OSTI)

The present invention is directed to a fuel-air control system for a combustor in which coal-derived gas of varying heat content is used. To maintain the temperature in the combustor at an essentially constant value the fuel-to-air ratio is adjusted by using a temperature actuated variable pressure regulator in the gas feed line to compensate for the variability of the heat content of the gas. The velocity of the products of combustion is maintained at an essentially constant flow rate by controlling the mass flow of the air and fuel through linked valves on the gas and air feed lines.

Loth, J.L.; Nakaishi, C.V.; Carpenter, L.K.; Bird, J.D.

1981-06-03T23:59:59.000Z

276

Demonstration of an on-site PAFC cogeneration system with waste heat utilization by a new gas absorption chiller  

SciTech Connect (OSTI)

Analysis and cost reduction of fuel cells is being promoted to achieve commercial on-site phosphoric acid fuel cells (on-site FC). However, for such cells to be effectively utilized, a cogeneration system designed to use the heat generated must be developed at low cost. Room heating and hot-water supply are the most simple and efficient uses of the waste heat of fuel cells. However, due to the short room-heating period of about 4 months in most areas in Japan, the sites having demand for waste heat of fuel cells throughout the year will be limited to hotels and hospitals Tokyo Gas has therefore been developing an on-site FC and the technology to utilize tile waste heat of fuel cells for room cooling by means of an absorption refrigerator. The paper describes the results of fuel cell cogeneration tests conducted on a double effect gas absorption chiller heater with auxiliary waste heat recovery (WGAR) that Tokyo Gas developed in its Energy Technology Research Laboratory.

Urata, Tatsuo [Tokyo Gas Company, LTD, Tokyo (Japan)

1996-12-31T23:59:59.000Z

277

Sustainable Energy Resources for Consumers Webinar on Solar Water Heating Transcript  

Broader source: Energy.gov [DOE]

Video recording transcript of a Webinar on Nov. 16, 2010 about residential solar water heating applications

278

Feasibility of Municipal Water Mains as Heat Sink for Residential Air-Conditioning  

E-Print Network [OSTI]

It has been proposed that municipal water mains be used as the heat sink or the heat source for air-conditioning or heating, respectively. This paper addresses the extent of thermal contamination associated with the use of municipal water...

Vliet, G. C.

1994-01-01T23:59:59.000Z

279

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

280

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

SciTech Connect (OSTI)

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

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

2008-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas water heating" 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

Advanced Water-Gas Shift Membrane Reactor  

SciTech Connect (OSTI)

The overall objectives for this project were: (1) to identify a suitable PdCu tri-metallic alloy membrane with high stability and commercially relevant hydrogen permeation in the presence of trace amounts of carbon monoxide and sulfur; and (2) to identify and synthesize a water gas shift catalyst with a high operating life that is sulfur and chlorine tolerant at low concentrations of these impurities. This work successfully achieved the first project objective to identify a suitable PdCu tri-metallic alloy membrane composition, Pd{sub 0.47}Cu{sub 0.52}G5{sub 0.01}, that was selected based on atomistic and thermodynamic modeling alone. The second objective was partially successful in that catalysts were identified and evaluated that can withstand sulfur in high concentrations and at high pressures, but a long operating life was not achieved at the end of the project. From the limited durability testing it appears that the best catalyst, Pt-Re/Ce{sub 0.333}Zr{sub 0.333}E4{sub 0.333}O{sub 2}, is unable to maintain a long operating life at space velocities of 200,000 h{sup -1}. The reasons for the low durability do not appear to be related to the high concentrations of H{sub 2}S, but rather due to the high operating pressure and the influence the pressure has on the WGS reaction at this space velocity.

Sean Emerson; Thomas Vanderspurt; Susanne Opalka; Rakesh Radhakrishnan; Rhonda Willigan

2009-01-07T23:59:59.000Z

282

Superconductor fiber elongation with a heated injected gas  

DOE Patents [OSTI]

An improved method and apparatus for producing flexible fibers (30) of superconducting material includes a crucible (12) for containing a charge of the superconducting material. The material is melted in the crucible (12) and falls in a stream (18) through a bottom hole (16) in the crucible (12). The stream (18) falls through a protecting collar (22) which maintains the stream (18) at high temperatures. The stream (18) is then supplied through a downwardly directed nozzle (26) where it is subjected to a high velocity of a heated gas (36') which breaks the melted superconducting material into ligaments which solidify into the flexible fibers (30). The fibers (30) are collected by directing them against a collection filter (32).

Zeigler, Douglas D. (Atwater, OH); Conrad, Barry L. (Alliance, OH); Gleixner, Richard A. (North Canton, OH)

2001-01-16T23:59:59.000Z

283

Heating of Oil Well by Hot Water Circulation  

E-Print Network [OSTI]

When highly viscous oil is produced at low temperatures, large pressure drops will significantly decrease production rate. One of possible solutions to this problem is heating of oil well by hot water recycling. We construct and analyze a mathematical model of oil-well heating composed of three linear parabolic PDE coupled with one Volterra integral equation. Further on we construct numerical method for the model and present some simulation results.

Mladen Jurak; Zarko Prnic

2005-03-04T23:59:59.000Z

284

Design of a high temperature hot water central heating system  

SciTech Connect (OSTI)

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

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

1981-11-01T23:59:59.000Z

285

Heat Recovery From Arc Furnaces Using Water Cooled Panels  

E-Print Network [OSTI]

HEAT RECOVERY FROM ARC FURNACES USING WATER COOLED PANELS D. F. Darby Deere & Company Moline, Illinois ABSTRACT In 1980-81, the John Deere Foundry at East Moline underwent an expansion program that in creased its capacity by over 60...%. This expansion was centered around the melt department where the four existing 13MVA electric arc furnaces were augmented with two additional 13MVA arc furnaces. A waste heat recovery system was installed on all six of the arc furnaces which, with modifica...

Darby, D. F.

286

Development of an Air-Source Heat Pump Integrated with a Water Heating / Dehumidification Module  

SciTech Connect (OSTI)

A residential-sized dual air-source integrated heat pump (AS-IHP) concept is under development in partnership between ORNL and a manufacturer. The concept design consists of a two-stage air-source heat pump (ASHP) coupled on the air distribution side with a separate novel water heating/dehumidification (WH/DH) module. The motivation for this unusual equipment combination is the forecast trend for home sensible loads to be reduced more than latent loads. Integration of water heating with a space dehumidification cycle addresses humidity control while performing double-duty. This approach can be applied to retrofit/upgrade applications as well as new construction. A WH/DH module capable of ~1.47 L/h water removal and ~2 kW water heating capacity was assembled by the manufacturer. A heat pump system model was used to guide the controls design; lab testing was conducted and used to calibrate the models. Performance maps were generated and used in a TRNSYS sub-hourly simulation to predict annual performance in a well-insulated house. Annual HVAC/WH energy savings of ~35% are predicted in cold and hot-humid U.S. climates compared to a minimum efficiency baseline.

Rice, C Keith [ORNL] [ORNL; Uselton, Robert B. [Lennox Industries, Inc] [Lennox Industries, Inc; Shen, Bo [ORNL] [ORNL; Baxter, Van D [ORNL] [ORNL; Shrestha, Som S [ORNL] [ORNL

2014-01-01T23:59:59.000Z

287

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

E-Print Network [OSTI]

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

Wu, Z.; Li, D.

2006-01-01T23:59:59.000Z

288

FROZEN HEAT A GLOBAL OUTLOOK ON METHANE GAS HYDRATES EXECUTIVE...  

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

About Gas Hydrates? What Role Do Gas Hydrates Play in Nature? Theme 2 Gas Hydrates as a Potential Energy Resource Are Gas Hydrates a Potential Energy Source? How Big Is the...

289

Dynamic Allocation of a Domestic Heating Task to Gas-Based and Heatpump-Based Heating Agents  

E-Print Network [OSTI]

energy from the environment (from air, water or soil) and uses this to heat the water of a central energy from the soil often a serious financial investment is needed, whereas a heatpump by itself countries, a substantial amount of domestic energy use during the winter season concerns heating. Often

Treur, Jan

290

Federal technology alert. Parabolic-trough solar water heating  

SciTech Connect (OSTI)

Parabolic-trough solar water heating is a well-proven renewable energy technology with considerable potential for application at Federal facilities. For the US, parabolic-trough water-heating systems are most cost effective in the Southwest where direct solar radiation is high. Jails, hospitals, barracks, and other facilities that consistently use large volumes of hot water are particularly good candidates, as are facilities with central plants for district heating. As with any renewable energy or energy efficiency technology requiring significant initial capital investment, the primary condition that will make a parabolic-trough system economically viable is if it is replacing expensive conventional water heating. In combination with absorption cooling systems, parabolic-trough collectors can also be used for air-conditioning. Industrial Solar Technology (IST) of Golden, Colorado, is the sole current manufacturer of parabolic-trough solar water heating systems. IST has an Indefinite Delivery/Indefinite Quantity (IDIQ) contract with the Federal Energy Management Program (FEMP) of the US Department of Energy (DOE) to finance and install parabolic-trough solar water heating on an Energy Savings Performance Contract (ESPC) basis for any Federal facility that requests it and for which it proves viable. For an ESPC project, the facility does not pay for design, capital equipment, or installation. Instead, it pays only for guaranteed energy savings. Preparing and implementing delivery or task orders against the IDIQ is much simpler than the standard procurement process. This Federal Technology Alert (FTA) of the New Technology Demonstration Program is one of a series of guides to renewable energy and new energy-efficient technologies.

NONE

1998-04-01T23:59:59.000Z

291

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

E-Print Network [OSTI]

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

Lekov, Alex B.

2010-01-01T23:59:59.000Z

292

Summary of research and development effort on air and water cooling of gas turbine blades  

SciTech Connect (OSTI)

The review on air- and water-cooled gas turbines from the 1904 Lemale-Armengaud water-cooled gas turbine, the 1948 to 1952 NACA work, and the program at GE indicates that the potential of air cooling has been largely exploited in reaching temperatures of 1100/sup 0/C (approx. 2000/sup 0/F) in utility service and that further increases in turbine inlet temperature may be obtained with water cooling. The local heat flux in the first-stage turbine rotor with water cooling is very high, yielding high-temperature gradients and severe thermal stresses. Analyses and tests indicate that by employing a blade with an outer cladding of an approx. 1-mm-thick oxidation-resistant high-nickel alloy, a sublayer of a high-thermal-conductivity, high-strength, copper alloy containing closely spaced cooling passages approx. 2 mm in ID to minimize thermal gradients, and a central high-strength alloy structural spar, it appears possible to operate a water-cooled gas turbine with an inlet gas temperature of 1370/sup 0/C. The cooling-water passages must be lined with an iron-chrome-nickel alloy must be bent 90/sup 0/ to extend in a neatly spaced array through the platform at the base of the blade. The complex geometry of the blade design presents truly formidable fabrication problems. The water flow rate to each of many thousands of coolant passages must be metered and held to within rather close limits because the heat flux is so high that a local flow interruption of only a few seconds would lead to a serious failure.Heat losses to the cooling water will run approx. 10% of the heat from the fuel. By recoverying this waste heat for feedwater heating in a command cycle, these heat losses will give a degradation in the power plant output of approx. 5% relative to what might be obtained if no cooling were required. However, the associated power loss is less than half that to be expected with an elegant air cooling system.

Fraas, A.P.

1980-03-01T23:59:59.000Z

293

Water Heating Basics | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels DataCombinedDepartment ofCareers »BatteriesVehicles VehiclesEnergy.govWater

294

Water-Heating Dehumidifier - Energy Innovation Portal  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched FerromagnetismWaste and Materials Disposition3 Water VaporIndustrial Technologies

295

Water Heating Standing Technical Committee Presentation  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy Usage »of| Department ofDepartment of Energy Watch it Live atOil) WaterStanding

296

System Modeling and Building Energy Simulations of Gas Engine Driven Heat Pump  

SciTech Connect (OSTI)

To improve the system performance of a gas engine driven heat pump (GHP) system, an analytical modeling and experimental study has been made by using desiccant system in cooling operation (particularly in high humidity operations) and suction line waste heat recovery to augment heating capacity and efficiency. The performance of overall GHP system has been simulated with a detailed vapor compression heat pump system design model. The modeling includes: (1) GHP cycle without any performance improvements (suction liquid heat exchange and heat recovery) as a baseline (both in cooling and heating mode), (2) the GHP cycle in cooling mode with desiccant system regenerated by waste heat from engine incorporated, (3) GHP cycle in heating mode with heat recovery (recovered heat from engine). According to the system modeling results, by using the desiccant system the sensible heat ratio (SHR- sensible heat ratio) can be lowered to 40%. The waste heat of the gas engine can boost the space heating efficiency by 25% at rated operating conditions. In addtion,using EnergyPlus, building energy simulations have been conducted to assess annual energy consumptions of GHP in sixteen US cities, and the performances are compared to a baseline unit, which has a electrically-driven air conditioner with the seasonal COP of 4.1 for space cooling and a gas funace with 90% fuel efficiency for space heating.

Mahderekal, Isaac [Oak Ridge National Laboratory (ORNL); Vineyard, Edward [Oak Ridge National Laboratory (ORNL)

2013-01-01T23:59:59.000Z

297

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

298

Economic Analysis of a Waste Water Resource Heat Pump Air-Conditioning System in North China  

E-Print Network [OSTI]

This paper describes the situation of waste water resource in north China and the characteristics and styles of a waste water resource heat pump system, and analyzes the economic feasibility of a waste water resource heat pump air...

Chen, H.; Li, D.; Dai, X.

2006-01-01T23:59:59.000Z

299

Water Heating Products and Services | Department of Energy  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy UsageAUDITVehiclesTankless or Demand-Type WaterTravelVentilationWater Heating Products

300

PdZnAl Catalysts for the Reactions of Water-Gas-Shift, Methanol...  

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

PdZnAl Catalysts for the Reactions of Water-Gas-Shift, Methanol Steam Reforming, and Reverse-Water-Gas-Shift. PdZnAl Catalysts for the Reactions of Water-Gas-Shift, Methanol Steam...

Note: This page contains sample records for the topic "gas water heating" 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

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.

302

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

303

Water-Gas Sampling At Fenton Hill HDR Geothermal Area (Janik...  

Open Energy Info (EERE)

Water-Gas Sampling At Fenton Hill HDR Geothermal Area (Janik & Goff, 2002) Exploration Activity Details Location Fenton Hill HDR Geothermal Area Exploration Technique Water-Gas...

304

Ameren Illinois (Gas)- Cooking and Heating Business Efficiency Incentives  

Broader source: Energy.gov [DOE]

Ameren Illinois offers several incentive programs that include efficient natural gas technologies. The programs are available only to non-residential customers that receive natural gas service from...

305

2 15.10.2013 Joachim Dietle Optimisation of Air-Water HP's Optimisation of Air-Water Heat Pumps  

E-Print Network [OSTI]

-Water Heat Pumps Ziehl-Abegg SE System boundary Improve Air Flow of Fan Improve System Joachim Dietle.10.2013 Joachim Dietle Optimisation of Air-Water HP's System boundary Air Flow in Heat Pumps V q d p st p P P L fan )( 1 Relevant for cooling or heating! Optimise heat pump: reduce pressure drop increase

Oak Ridge National Laboratory

306

Heat Transfer on a Hypersonic Sphere with Gas Injection Vladimir V. Riabov  

E-Print Network [OSTI]

Heat Transfer on a Hypersonic Sphere with Gas Injection Vladimir V. Riabov Department be considered as an effective way of the reduction of heat transfer to the surface in this area [1 the viscous layer is blown completely off the surface, and heat transfer is zero. The effect of injecting

Riabov, Vladimir V.

307

HEAT TRANSFER ON A HYPERSONIC SPHERE WITH DIFFUSE RAREFIED-GAS INJECTION  

E-Print Network [OSTI]

HEAT TRANSFER ON A HYPERSONIC SPHERE WITH DIFFUSE RAREFIED-GAS INJECTION Vladimir V. Riabov* Rivier numbers Re0,R.3-7 Mass injection can be considered as an effective way of the reduction of heat transfer in the case of small Reynolds numbers. Moss12 found that mass injection dramatically reduces heat transfer

Riabov, Vladimir V.

308

Int. Symp. on Heat Transfer in Gas Turbine Systems 9 14 August, 2009, Antalya, Turkey  

E-Print Network [OSTI]

Int. Symp. on Heat Transfer in Gas Turbine Systems 9 ­ 14 August, 2009, Antalya, Turkey EXPERIMENTAL TURBINE AERO-HEAT TRANSFER STUDIES IN ROTATING RESEARCH FACILITIES Cengiz Camci Turbomachinery Aero-Heat Transfer Laboratory Department of Aerospace Engineering The Pennsylvania State University 233

Camci, Cengiz

309

A study of water driven oil encroachment into gas caps  

E-Print Network [OSTI]

A STUDY OF WATER DRIVEN OIL ENCROACHMENT INTO GAS CAPS LIBRARY A S I COLLEGE OF TEXAS A Thesis By HARLAN J. RITCH ~ ~ ~ Submitted to the Graduate School oi' the Agricultural and Mechanical College of Texas in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE May, 1958 Major Subject: Petroleum Engineering A STUDY OF WATER DRIVEN OIL ENCROACHMENT INTO GAS CAPS A Thesis By HARLAN J. RITCH Approved as to style and content by: hairxnan of Coxnxnittee) (Head...

Ritch, Harlan J

1958-01-01T23:59:59.000Z

310

Water's Journey Through the Shale Gas Drilling and  

E-Print Network [OSTI]

Water's Journey Through the Shale Gas Drilling and Production Processes in the Mid-Atlantic Region: Marcellus shale drilling in progress, Beaver Run Reservoir, Westmoreland County. Credit: Robert Donnan. Gas. This publication fo- cuses mostly on Pennsylvania because it has the most Marcellus drilling activity of any state

Lee, Dongwon

311

Improved Design Tools for Surface Water and Standing Column Well Heat Pump Systems  

Broader source: Energy.gov [DOE]

This project will improve the capability of engineers to design heat pump systems that utilize surface water or standing column wells (SCW) as their heat sources and sinks.

312

OPTIMIZED CONTROL STRATEGIES FOR A TYPICAL WATER LOOP HEAT PUMP SYSTEM.  

E-Print Network [OSTI]

??Water Loop Heat Pump (WLHP) System has been widely utilized in the Heating, Ventilating and Air Conditioning (HVAC) industry for several decades. There is no… (more)

Lian, Xu

2011-01-01T23:59:59.000Z

313

Flammability of selected heat resistant alloys in oxygen gas mixtures  

SciTech Connect (OSTI)

Within recent years, the use of oxygen has increased in applications where elevated temperatures and corrosion may be significant factors. In such situations, traditional alloys used in oxygen systems will not be adequate. Where alternative alloys must be utilized, based upon environmental requirements, it is essential that they may be characterized with respect to their ignition and combustion resistance in oxygen. Promoted ignition and promoted ignition-combustion are terms which have been used to describe a situation where a substance with low oxygen supports the combustion of a compatibility ignites and more ignition resistant material. In this paper, data will be presented on the promoted ignition-combustion behavior of selected heat resistant engineering alloys that may be considered for gaseous oxygen applications in severe environments. In this investigation, alloys have been evaluated via both flowing and static (fixed volume) approaches using a rod configuration. Oxygen-nitrogen gas mixtures with compositions ranging from approximately 40 to 99.7% oxygen at pressures of 3.55 to 34.6 MPa were used in the comparative studies.

Zawierucha, R.; McIlroy, K.; Million, J.F. [Praxair, Inc., Tonawanda, NY (United States)

1995-12-31T23:59:59.000Z

314

Reduced heat flow in light water (H2O) due to heavy water (D2O)  

E-Print Network [OSTI]

The flow of heat, from top to bottom, in a column of light water can be decreased by over 1000% with the addition of heavy water. A column of light water cools from 25 C to 0 C in 11 hours, however, with the addition of heavy water it takes more than 100 hours. There is a concentration dependence where the cooling time increases as the concentration of added (D2O) increases, with a near maximum being reached with as little as 2% of (D2O) added. This phenomenon will not occur if the water is mixed after the heavy water is added.

William R. Gorman; James D. Brownridge

2008-09-04T23:59:59.000Z

315

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

316

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

317

Demand Response Performance of GE Hybrid Heat Pump Water Heater  

SciTech Connect (OSTI)

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

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

2013-07-01T23:59:59.000Z

318

Control of water coning in gas reservoirs by injecting gas into the aquifer  

E-Print Network [OSTI]

the injected gas bubble to not have the expected effect, because the cone established may have a greater radius at the original WGC than the maximum radius of the gas bubble. In other words, the cone tends to avoid the low permeability zone by going around... the warm seasons of the year. The best storage sites found up to now are deleted or partly aeleted gas fields close to large consumption areas. In this study, gas storage reservoirs with gas originally left by a water drive are studied. The production/injection...

Haugen, Sigurd Arild

1980-01-01T23:59:59.000Z

319

Water management practices used by Fayetteville shale gas producers.  

SciTech Connect (OSTI)

Water issues continue to play an important role in producing natural gas from shale formations. This report examines water issues relating to shale gas production in the Fayetteville Shale. In particular, the report focuses on how gas producers obtain water supplies used for drilling and hydraulically fracturing wells, how that water is transported to the well sites and stored, and how the wastewater from the wells (flowback and produced water) is managed. Last year, Argonne National Laboratory made a similar evaluation of water issues in the Marcellus Shale (Veil 2010). Gas production in the Marcellus Shale involves at least three states, many oil and gas operators, and multiple wastewater management options. Consequently, Veil (2010) provided extensive information on water. This current study is less complicated for several reasons: (1) gas production in the Fayetteville Shale is somewhat more mature and stable than production in the Marcellus Shale; (2) the Fayetteville Shale underlies a single state (Arkansas); (3) there are only a few gas producers that operate the large majority of the wells in the Fayetteville Shale; (4) much of the water management information relating to the Marcellus Shale also applies to the Fayetteville Shale, therefore, it can be referenced from Veil (2010) rather than being recreated here; and (5) the author has previously published a report on the Fayetteville Shale (Veil 2007) and has helped to develop an informational website on the Fayetteville Shale (Argonne and University of Arkansas 2008), both of these sources, which are relevant to the subject of this report, are cited as references.

Veil, J. A. (Environmental Science Division)

2011-06-03T23:59:59.000Z

320

New Mexico Gas Company- Commercial Efficiency Programs  

Broader source: Energy.gov [DOE]

The New Mexico Gas Company Commercial Energy Efficiency programs provide energy savings for businesses using natural gas for cooking and water heating. Prescriptive incentives for specified...

Note: This page contains sample records for the topic "gas water heating" 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

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

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

Generator (Waste Heat 1) - TEG 1 (preliminary assembly and testing) - TEG 2 (Bi-Te modules) - TEG 3 (Skutterudite and Bi-Te modules) * Develop Cost-Effective TEG (Waste Heat...

322

Supervision and control prototyping for an engine exhaust gas heat recovery system based on a steam Rankine cycle  

E-Print Network [OSTI]

Supervision and control prototyping for an engine exhaust gas heat recovery system based on a steam Rankine steam process for exhaust gas heat recovery from a spark-ignition (SI) engine, from a prototyping of a practical supervi- sion and control system for a pilot Rankine steam process for exhaust gas heat recovery

Paris-Sud XI, Université de

323

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

SciTech Connect (OSTI)

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

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

2010-05-14T23:59:59.000Z

324

Combined Flue Gas Heat Recovery and Pollution Control Systems  

E-Print Network [OSTI]

in the field of heat recovery now make it possible to recover a portion of the wasted heat and improve the working conditions of the air purification equipment. Proper design and selection of heat recovery and pollution control equipment as a combination...

Zbikowski, T.

1979-01-01T23:59:59.000Z

325

Electric equipment providing space conditioning, water heating, and refrigeration consumes 12.5% of the nation's  

E-Print Network [OSTI]

Electric equipment providing space conditioning, water heating, and refrigeration consumes 12 are the heart of air conditioners, heat pumps, chillers, supermarket refrigeration systems, and more. Global use of vapor compression system configurations including multi-functional integrated heat pumps, multi

Oak Ridge National Laboratory

326

Hybrid heat exchange for the compression capture of CO2 from recirculated flue gas  

SciTech Connect (OSTI)

An approach proposed for removal of CO2 from flue gas cools and compresses a portion of a recirculated flue-gas stream, condensing its volatile materials for capture. Recirculating the flue gas concentrates SOx, H2O and CO2 while dramatically reducing N2 and NOx, enabling this approach, which uses readily available industrial components. A hybrid system of indirect and direct-contact heat exchange performs heat and mass transfer for pollutant removal and energy recovery. Computer modeling and experimentation combine to investigate the thermodynamics, heat and mass transfer, chemistry and engineering design of this integrated pollutant removal (IPR) system.

Oryshchyn, Danylo B.; Ochs, Thomas L.; Summers, Cathy A.

2004-01-01T23:59:59.000Z

327

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

SciTech Connect (OSTI)

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

Not Available

2012-01-01T23:59:59.000Z

328

Water Heating Standing Technical Committee Presentation | Department of  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartment of EnergyofProject is onModelingFederal EnergyWaste HeatWaterOil) WaterEnergy

329

Increased stray gas abundance in a subset of drinking water wells near Marcellus shale gas extraction  

E-Print Network [OSTI]

fingerprinting | fracking | hydrology and ecology Unconventional sources of gas and oil are transforming energy and horizontal drilling are also growing (4, 5). These concerns include changes in air quality (6), human health the greenhouse gas balance (8, 9). Perhaps the biggest health concern remains the potential for drinking water

Jackson, Robert B.

330

Determination of the effect of gas viscosity upon gas flow in permeable media containing water and gas  

E-Print Network [OSTI]

?ateredeaturated Natural Gas Visoositiss at Varieua PPISSQreao ~ ~ ~ o e ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 32 VI Ns~tura+ed gitrogen Viscosities 0't Varieue h%00uraee ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ eel 33 VII Das Wbili... pressure to 1500 ysi per yccryoses of flew work~ tho viscosities af aitrogen aud tho natural gas wbou saturated with water vapor were also detercdcmd Sco basis yerpese of this pre)set was te dsteruine ths offset of the vtsoosQy of a gas nyon the web...

Stegemeier, Richard Joseph

1952-01-01T23:59:59.000Z

331

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

E-Print Network [OSTI]

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

Franco, Victor

2011-01-01T23:59:59.000Z

332

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.

333

Calculation of heat capacities of light and heavy water by path-integral molecular dynamics  

E-Print Network [OSTI]

Calculation of heat capacities of light and heavy water by path-integral molecular dynamics-integral molecular dynamics has been used to calculate the constant-volume heat capacities of light and heavy water

Nielsen, Steven O.

334

15 Ways to Save on Your Water Heating Bill | Department of Energy  

Energy Savers [EERE]

15 Ways to Save on Your Water Heating Bill 15 Ways to Save on Your Water Heating Bill October 26, 2009 - 3:49pm Addthis Allison Casey Senior Communicator, NREL Sometimes it...

335

Evaluation and demonstration of decentralized space and water heating versus centralized services for new and rehabilitated multifamily buildings. Final report  

SciTech Connect (OSTI)

The general objective of this research was aimed at developing sufficient technical and economic know-how to convince the building and design communities of the appropriateness and energy advantages of decentralized space and water heating for multifamily buildings. Two main goals were established to guide this research. First, the research sought to determine the cost-benefit advantages of decentralized space and water heating versus centralized systems for multifamily applications based on innovative gas piping and appliance technologies. The second goal was to ensure that this information is made available to the design community.

Belkus, P. [Foster-Miller, Inc., Waltham, MA (US); Tuluca, A. [Steven Winter Associates, Inc., Norwalk, CT (US)

1993-06-01T23:59:59.000Z

336

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

E-Print Network [OSTI]

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

Lekov, Alex

2011-01-01T23:59:59.000Z

337

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

E-Print Network [OSTI]

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

Lekov, Alex B.

2010-01-01T23:59:59.000Z

338

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

E-Print Network [OSTI]

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

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

2010-01-01T23:59:59.000Z

339

Two-tank working gas storage system for heat engine  

DOE Patents [OSTI]

A two-tank working gas supply and pump-down system is coupled to a hot gas engine, such as a Stirling engine. The system has a power control valve for admitting the working gas to the engine when increased power is needed, and for releasing the working gas from the engine when engine power is to be decreased. A compressor pumps the working gas that is released from the engine. Two storage vessels or tanks are provided, one for storing the working gas at a modest pressure (i.e., half maximum pressure), and another for storing the working gas at a higher pressure (i.e., about full engine pressure). Solenoid valves are associated with the gas line to each of the storage vessels, and are selectively actuated to couple the vessels one at a time to the compressor during pumpdown to fill the high-pressure vessel with working gas at high pressure and then to fill the low-pressure vessel with the gas at low pressure. When more power is needed, the solenoid valves first supply the low-pressure gas from the low-pressure vessel to the engine and then supply the high-pressure gas from the high-pressure vessel. The solenoid valves each act as a check-valve when unactuated, and as an open valve when actuated.

Hindes, Clyde J. (Troy, NY)

1987-01-01T23:59:59.000Z

340

E-Print Network 3.0 - artificially heated waters Sample Search...  

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

Oklahoma State University (www.hvac.okstate.edu) Summary: exchanger, and water-to-water heat pumps have been developed and validated separately... from precipitation, and latent...

Note: This page contains sample records for the topic "gas water heating" 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

Hybrid Heat Pumps Using Selective Water Sorbents (SWS)  

SciTech Connect (OSTI)

The development of the ground-coupled and air-coupled Heating Ventilation and Air-Conditioning (HVAC) system is essential in meeting the goals of Zero Energy Houses (ZEH), a viable concept vigorously pursued under DOE sponsorship. ORNL has a large Habitat for Humanity complex in Lenoir City where modem buildings technology is incorporated on a continual basis. This house of the future is planned for lower and middle income families in the 21st century. The work undertaken in this CRADA is an integral part of meeting DOE's objectives in the Building America program. SWS technology is a prime candidate for reducing the footprint, cost and improve the performance of ground-coupled heat pumps. The efficacy of this technique to exchange energy with the ground is a topic of immense interest to DOE, builders and HVAC equipment manufacturers. If successful, the SWS concept will become part of a packaged ZEH kit for affordable and high-end houses. Lennox Industries entered into a CRADA with Oak Ridge National Laboratory in November 2004. Lennox, Inc. agreed to explore ways of using Selective Water Sorbent materials to boost the efficiency of air-coupled heat pumps whereas ORNL concentrated on ground-coupled applications. Lennox supplied ORNL with heat exchangers and heat pump equipment for use at ORNL's Habitat for Humanity site in Lenoir City, Tennessee. Lennox is focused upon air-coupled applications of SWS materials at the Product Development and Research Center in Carrollton, TX.

Ally, M. R.

2006-11-30T23:59:59.000Z

342

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

SciTech Connect (OSTI)

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

Not Available

2010-09-01T23:59:59.000Z

343

Earth-Coupled Water-Source Heat Pump Research, Design and Applications in Louisiana  

E-Print Network [OSTI]

An earth-coupled water-source heat pump uses the earth as the thermal source and sink for economical, energy efficient, space heating and cooling. Water exiting the heat pump passes through an earth heat exchanger, which is a closed loop of plastic...

Braud, H. J.; Klimkowski, H.; Baker, F. E.

1985-01-01T23:59:59.000Z

344

Water in Alberta With Special Focus on the Oil and Gas Industry  

E-Print Network [OSTI]

1 Water in Alberta With Special Focus on the Oil and Gas Industry (Education Paper) Seyyed Ghaderi ................................................................................................................................18 Shale Gas ................................................................................................................................................19 How much water is used in deep shale gas development

Gieg, Lisa

345

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

346

Development and Field Testing of a Hybrid Water Heating and Dehumidification Appliance  

E-Print Network [OSTI]

standard system is replaced by a Heat Pump Water Heater (HPWH), the performance can be increased by 140

Aaron K. Ball; Chip Ferguson; William Mcdaniel

347

Municipal water-based heat pump heating and/or cooling systems: Findings and recommendations. Final report  

SciTech Connect (OSTI)

The purpose of the present work was to determine if existing heat pump systems based on municipal water systems meet existing water quality standards, to analyze water that has passed through a heat pump or heat exchanger to determine if corrosion products can be detected, to determine residual chlorine levels in municipal waters on the inlet as well as the outlet side of such installations, to analyses for bacterial contaminants and/or regrowth due to the presence of a heat pump or heat exchanger, to develop and suggest criteria for system design and construction, to provide recommendations and specifications for material and fluid selection, and to develop model rules and regulations for the installation, operation, and monitoring of new and existing systems. In addition, the Washington State University (WSU) has evaluated availability of computer models that would allow for water system mapping, water quality modeling and system operation.

Bloomquist, R.G. [Washington, State Univ., Pullman, WA (United States); Wegman, S. [South Dakota Utilities Commission (United States)

1998-04-01T23:59:59.000Z

348

A Scaleless Snake: Tests of the Role of Reptilian Scales in Water Loss and Heat Transfer  

E-Print Network [OSTI]

A Scaleless Snake: Tests of the Role of Reptilian Scales in Water Loss and Heat Transfer Reprinted: Tests of the Role of Reptilian Scales in Water Loss and Heat Transfer A unique specimen of gopher snake of pulmocutaneous water loss and heat transfer, no difference was observed between the scale- less animal

Bennett, Albert F.

349

Zero Discharge Water Management for Horizontal Shale Gas Well Development  

SciTech Connect (OSTI)

Hydraulic fracturing technology (fracking), coupled with horizontal drilling, has facilitated exploitation of huge natural gas (gas) reserves in the Devonian-age Marcellus Shale Formation (Marcellus) of the Appalachian Basin. The most-efficient technique for stimulating Marcellus gas production involves hydraulic fracturing (injection of a water-based fluid and sand mixture) along a horizontal well bore to create a series of hydraulic fractures in the Marcellus. The hydraulic fractures free the shale-trapped gas, allowing it to flow to the well bore where it is conveyed to pipelines for transport and distribution. The hydraulic fracturing process has two significant effects on the local environment. First, water withdrawals from local sources compete with the water requirements of ecosystems, domestic and recreational users, and/or agricultural and industrial uses. Second, when the injection phase is over, 10 to 30% of the injected water returns to the surface. This water consists of flowback, which occurs between the completion of fracturing and gas production, and produced water, which occurs during gas production. Collectively referred to as returned frac water (RFW), it is highly saline with varying amounts of organic contamination. It can be disposed of, either by injection into an approved underground injection well, or treated to remove contaminants so that the water meets the requirements of either surface release or recycle use. Depending on the characteristics of the RFW and the availability of satisfactory disposal alternatives, disposal can impose serious costs to the operator. In any case, large quantities of water must be transported to and from well locations, contributing to wear and tear on local roadways that were not designed to handle the heavy loads and increased traffic. The search for a way to mitigate the situation and improve the overall efficiency of shale gas production suggested a treatment method that would allow RFW to be used as make-up water for successive fracs. RFW, however, contains dissolved salts, suspended sediment and oils that may interfere with fracking fluids and/or clog fractures. This would lead to impaired well productivity. The major technical constraints to recycling RFW involves: identification of its composition, determination of industry standards for make-up water, and development of techniques to treat RFW to acceptable levels. If large scale RFW recycling becomes feasible, the industry will realize lower transportation and disposal costs, environmental conflicts, and risks of interruption in well development schedules.

Paul Ziemkiewicz; Jennifer Hause; Raymond Lovett; David Locke Harry Johnson; Doug Patchen

2012-03-31T23:59:59.000Z

350

Secondary atomization of coal-water fuels for gas turbine applications: Final report  

SciTech Connect (OSTI)

The main research objective was to determine the effectiveness of the CWF treatments on atomization quality when applied to an ultrafine coal-water fuel (solids loading reduced to 50%) and to gas turbine operating conditions (atomization at elevated pressures). Three fuel treatment techniques were studied: (1) heating of CWF under pressure to produce steam as the pressure drops during passage of the CWF through the atomizer nozzle, (2) absorption of CO/sub 2/ gas in the CWF to produce a similar effect, and (3) a combination of the two treatments above. These techniques were expected to produce secondary atomization, that is, disruptive shattering of CWF droplets subsequent to their leaving the atomizing nozzle, and to lead to better burnout and finer fly ash size distribution. A parallel objective was to present quantitative information on the spray characteristics (mean droplet size, radial distribution of droplet size, and spray shape) of CWF with and without fuel treatment, applicable to the design of CWF-burning gas turbine combustors. The experiments included laser diffraction droplet size measurements and high-speed photographic studies in the MIT Spray Test Facility to determine mean droplet size (mass median diameter), droplet size distribution, and spray shape and angle. Three systems of atomized sprays were studied: (1) water sprays heated to a range of temperatures at atmospheric pressure; (2) CWF sprays heated at atmospheric pressure to different temperatures; and (3) sprays at elevated pressure. 31 refs., 47 figs., 1 tab.

Yu, T.U.; Kang, S.W.; Beer, J.M.

1988-12-01T23:59:59.000Z

351

Analysis of IECC2003 Chiller Heat Recovery for Service Water Heating Requirement for New York State  

SciTech Connect (OSTI)

The state of New York asked the U.S. Department of Energy to evaluate the cost-effectiveness of the requirement for Heat Recovery for Service Water Heating that exists in the 2003 International Energy Conservation Code to determine whether this requirement should be adopted into the New York State Energy Code. A typical hotel application that would trigger this requirement was examined using whole building simulation software to generate baseline annual chiller and service hot water loads, and a spreadsheet was used to examine the energy savings potential for heat recovery using hourly load files from the simulation. An example application meeting the code requirement was developed, and the energy savings, energy cost savings, and first costs for the heat recovery installation were developed. The calculated payback for this application was 6.3 years using 2002 New York state average energy costs. This payback met the minimum requirements for cost effectiveness established for the state of New York for updating the commercial energy conservation code.

Winiarski, David W.

2004-08-15T23:59:59.000Z

352

Water Heaters and Hot Water Distribution Systems  

E-Print Network [OSTI]

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

Lutz, Jim

2012-01-01T23:59:59.000Z

353

Natural convection heat exchangers for solar water heating systems. Technical progress report, November 15, 1996--January 14, 1997  

SciTech Connect (OSTI)

The goals of this project are: (1) to develop guidelines for the design and use of thermosypohon side-arm heat exchangers in solar domestic water heating systems, and (2) to establish appropriate modeling and testing criteria for evaluating the performance of systems using this type of heat exchanger.

Davidson, J.H.

1998-06-01T23:59:59.000Z

354

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

355

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

E-Print Network [OSTI]

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

Lekov, Alex B.

2010-01-01T23:59:59.000Z

356

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

E-Print Network [OSTI]

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

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

2010-01-01T23:59:59.000Z

357

Analysis of a duo-selecting membrane reactor for the water-gas shift  

E-Print Network [OSTI]

The water-gas shift reaction is an exothermic and reversible catalytic process that converts carbon monoxide and water (steam) to hydrogen and carbon dioxide. In regard to energy-related issues, the water-gas shift is part ...

Hardy, AliciA Jillian Jackson, 1978-

2004-01-01T23:59:59.000Z

358

Laclede Gas Company- Residential High Efficiency Heating Rebate Program  

Broader source: Energy.gov [DOE]

Laclede Gas Company offers various rebates to residential customers for investing in energy efficient equipment and appliances. Residential customers can qualify for rebates on boilers, furnaces,...

359

The Beckett System Recovery and Utilization of Low Grade Waste Heat From Flue Gas  

E-Print Network [OSTI]

THE BECKETT SYSTEM RECOVERY AND UTILIZATION OF LOW GRADE WASTE HEAT FROM FLUE GAS Wilfred R. Henderson Blenkhorn & Sawle Ltd. St. Catharines, Ontario Joseph F. DeBiase John Deere WeIland I%rks WeIland, Ontario ABSTRACT The Beckett Heat Recovery...

Henderson, W. R.; DeBiase, J. F.

1983-01-01T23:59:59.000Z

360

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

Note: This page contains sample records for the topic "gas water heating" 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

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

DOE Patents [OSTI]

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

Andrews, John W. (Sag Harbor, NY)

1983-06-28T23:59:59.000Z

362

Conjugate Heat Transfer with Large Eddy Simulation for Gas Turbine Components.  

E-Print Network [OSTI]

Conjugate Heat Transfer with Large Eddy Simulation for Gas Turbine Components. Florent Duchaine constraint for GT (gas turbines). Most existing CHT tools are developped for chained, steady phenomena. A film-cooled turbine vane is then studied. Thermal conduction in the blade implies lower wall

Nicoud, Franck

363

Elevated freestream turbulence effects on heat transfer for a gas turbine vane  

E-Print Network [OSTI]

turbine airfoil, particularly for the first stage nozzle guide vane. For this study, augmentations. To incorporate all of the variables affecting boundary layer development on gas turbine airfoils, studies needElevated freestream turbulence effects on heat transfer for a gas turbine vane K.A. Thole a,*, R

Thole, Karen A.

364

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

365

Drain-Water Heat Recovery | Department of Energy  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelinesProvedDecember 2005Department ofDOEDisability EmploymentDrain-Water Heat Recovery

366

Research and Development Roadmap for Emerging Water Heating Technologies  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartment of Energy fromComments onReply CommentsNext-Generation Low|Emerging Water Heating

367

Reduce Natural Gas Use in Your Industrial Process Heating Systems  

SciTech Connect (OSTI)

This DOE Industrial Program fact sheet describes ten effective ways to save energy and money in industrial process heating systems by making some changes in equipment, operations, and maintenance.

Not Available

2007-09-01T23:59:59.000Z

368

A Gas-Fired Heat Pipe Zone Heater  

E-Print Network [OSTI]

in this table were obtained from the 1983 Qas Rel~earch Inrtitute Baseline Projection Data Book. 4verage Resldentlal Gas Prlces ($/Wtu) (1982 do1 lars) New England Middle Atlantlc South Atlantlc East North Central West North Central East South Central... West South Central kuntaln #I Mountaln I2 Paclflc #I Paclf lc 12 The conservation factor may be exprerred as lABLEm Gas Research lnstltute Fuel lnflatlon Estlmates natural Gas 1- ~2 1983-1990 1990-ZMO Nc* England 1.7 2.1 Mlddle Atlantlc 2.1 2...

Winn, C. B.; Burns, P.; Guire, J.

1984-01-01T23:59:59.000Z

369

THE INTEGRATION OF PROCESS HEAT APPLICATIONS TO HIGH TEMPERATURE GAS REACTORS  

SciTech Connect (OSTI)

A high temperature gas reactor, HTGR, can produce industrial process steam, high-temperature heat-transfer gases, and/or electricity. In conventional industrial processes, these products are generated by the combustion of fossil fuels such as coal and natural gas, resulting in significant emissions of greenhouse gases such as carbon dioxide. Heat or electricity produced in an HTGR could be used to supply process heat or electricity to conventional processes without generating any greenhouse gases. Process heat from a reactor needs to be transported by a gas to the industrial process. Two such gases were considered in this study: helium and steam. For this analysis, it was assumed that steam was delivered at 17 MPa and 540 C and helium was delivered at 7 MPa and at a variety of temperatures. The temperature of the gas returning from the industrial process and going to the HTGR must be within certain temperature ranges to maintain the correct reactor inlet temperature for a particular reactor outlet temperature. The returning gas may be below the reactor inlet temperature, ROT, but not above. The optimal return temperature produces the maximum process heat gas flow rate. For steam, the delivered pressure sets an optimal reactor outlet temperature based on the condensation temperature of the steam. ROTs greater than 769.7 C produce no additional advantage for the production of steam.

Michael G. McKellar

2011-11-01T23:59:59.000Z

370

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...

371

Biological Water Gas Shift DOE Hydrogen, Fuel Cell, and Infrastructure  

E-Print Network [OSTI]

Yields Energy in Darkness · CO supports both cell growth and ATP synthesis, in darkness · ATP can be used to regenerate more water-gas shift catalysts in darkness · Dark bioreactor simplifies reactor design, operation's comments that shift reaction can support cell growth yielding energy in darkness leading to sustained H2

372

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.

373

Effect of the water activities of the heating and the recovery media on1 the apparent heat resistance of Bacillus cereus spores.2  

E-Print Network [OSTI]

Effect of the water activities of the heating and the recovery media on1 the apparent heat the water activity of the recovery medium was kept near 1. Reciprocally, the water activity of the14 heating with the same depressors. Lastly, in a third set of experiments, the heating medium and the recovery16 medium

Paris-Sud XI, Université de

374

Collisionless electron heating by radio frequency bias in low gas pressure inductive discharge  

SciTech Connect (OSTI)

We show experimental observations of collisionless electron heating by the combinations of the capacitive radio frequency (RF) bias power and the inductive power in low argon gas pressure RF biased inductively coupled plasma (ICP). With small RF bias powers in the ICP, the electron energy distribution (EED) evolved from bi-Maxwellian distribution to Maxwellian distribution by enhanced plasma bulk heating and the collisionless sheath heating was weak. In the capacitive RF bias dominant regime, however, high energy electrons by the RF bias were heated on the EEDs in the presence of the ICP. The collisionless heating mechanism of the high energy electrons transited from collisionless inductive heating to capacitive coupled collisionless heating by the electron bounce resonance in the RF biased ICP.

Lee, Hyo-Chang; Chung, Chin-Wook [Department of Electrical Engineering, Hanyang University, Seoul 133-791 (Korea, Republic of)

2012-12-10T23:59:59.000Z

375

COLLISIONLESS ELECTRON HEATING IN RF GAS DISCHARGES: II. THE ROLE OF COLLISIONS AND NON-LINEAR EFFECTS  

E-Print Network [OSTI]

COLLISIONLESS ELECTRON HEATING IN RF GAS DISCHARGES: II. THE ROLE OF COLLISIONS AND NON of electrons ( ) is large (comparable with discharge slab) and collisionless heating dominates Ohmic one. Being initially proposed for plasma heating in 1 , it was rst explored in gas discharge plasma for a capacitively

Kaganovich, Igor

376

A Computational Analysis of Smart Timing Decisions for Heating Based on an Air-to-Water Heat pump SMARTER EUROPE E-world energy & water 2014 Proceedings page 1  

E-Print Network [OSTI]

A Computational Analysis of Smart Timing Decisions for Heating Based on an Air-to-Water Heat pump Decisions for Heating Based on an Air-to-Water Heat pump Jan Treur VU University Amsterdam, Agent Systems be most efficient to use this energy in these periods. For air to water heat pumps a similar issue occurs

Treur, Jan

377

Passive decay heat removal system for water-cooled nuclear reactors  

DOE Patents [OSTI]

A passive decay-heat removal system for a water-cooled nuclear reactor employs a closed heat transfer loop having heat-exchanging coils inside an open-topped, insulated box located inside the reactor vessel, below its normal water level, in communication with a condenser located outside of containment and exposed to the atmosphere. The heat transfer loop is located such that the evaporator is in a position where, when the water level drops in the reactor, it will become exposed to steam. Vapor produced in the evaporator passes upward to the condenser above the normal water level. In operation, condensation in the condenser removes heat from the system, and the condensed liquid is returned to the evaporator. The system is disposed such that during normal reactor operations where the water level is at its usual position, very little heat will be removed from the system, but during emergency, low water level conditions, substantial amounts of decay heat will be removed.

Forsberg, Charles W. (Oak Ridge, TN)

1991-01-01T23:59:59.000Z

378

DYNAMIC MODEL OF AN INDUSTRIAL HEAT PUMP USING WATER AS REFRIGERANT  

E-Print Network [OSTI]

1 DYNAMIC MODEL OF AN INDUSTRIAL HEAT PUMP USING WATER AS REFRIGERANT CHAMOUN MARWAN to improve industrial energy efficiency, the development of a high temperature heat pump using water vapor as refrigerant is investigated. Technical problems restraining the feasibility of this industrial heat pump

Paris-Sud XI, Université de

379

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

SciTech Connect (OSTI)

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

NONE

1996-01-30T23:59:59.000Z

380

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

SciTech Connect (OSTI)

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

NONE

1996-01-30T23:59:59.000Z

Note: This page contains sample records for the topic "gas water heating" 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

Energy Recovery By Direct Contact Gas-Liquid Heat Exchange  

E-Print Network [OSTI]

-09-48 Proceedings from the Tenth Annual Industrial Energy Technology Conference, Houston, TX, September 13-15, 1988 passes to the atmosphere. The heated liquid moves through a closed circuit to tubular exchangers where its heat is transferred to a working fluid... are available, For sieve trays, mass transfer efficiency sources have been tabulated by Chan and Fair (1984), 267 ESL-IE-88-09-48 Proceedings from the Tenth Annual Industrial Energy Technology Conference, Houston, TX, September 13-15, 1988 When only mass...

Fair, J. R.; Bravo, J. L.

382

Compact Ceramic Heat Exchangers for Corrosive Waste Gas Applications  

E-Print Network [OSTI]

in the late 1930's of low-leakage high-pressure metallic recuperators resulted in the gradual demise of ceramic heat exchar~ers. This trend was given further impetus by the rapid fall in oil prices in the 1950's which further reduced the economic... recuperators. Metallic heat exchangers are ideally suited to handlir~ clean waste gases havir~ temperatures rar~ir~ from 300 deg. C to 1050 deg. C and for preheatir~ air up to 550 deg. C as well as low calorific gases to 450 deg. C. Operatir~ metallic...

Laws, W. R.; Reed, G. R.

1982-01-01T23:59:59.000Z

383

CFD Validation of Gas Injection into Stagnant Water  

SciTech Connect (OSTI)

Investigations in the area of two-phase flow at the Oak Ridge National Laboratory's (ORNL) Spallation Neutron Source (SNS) facility are progressing. It is expected that the target vessel lifetime could be extended by introducing gas into the liquid mercury target. As part of an effort to validate the two-phase computational fluid dynamics (CFD) model, simulations and experiments of gas injection in stagnant water have been completed. The volume of fluid (VOF) method as implemented in ANSYS-CFX was used to simulate the unsteady two-phase flow of gas injection into stagnant water. Flow visualization data were obtained with a high-speed camera for the comparison of predicted and measured bubble sizes and shapes at various stages of the bubble growth, detachment, and gravitational rise. The CFD model is validated with these experimental measurements at different gas flow rates. The acoustic waves emitted at the time of detachment and during subsequent oscillations of the bubble were recorded with a microphone. The acoustic signature aspect of this validation is particularly interesting since it has applicability to the injection of gas into liquid mercury, which is opaque.

Abdou, Ashraf A [ORNL

2007-01-01T23:59:59.000Z

384

Thermal Analysis of the Divertor Primary Heat Transfer System Piping During the Gas Baking Process  

SciTech Connect (OSTI)

A preliminary analysis has been performed examining the temperature distribution in the Divertor Primary Heat Transfer System (PHTS) piping and the divertor itself during the gas baking process. During gas baking, it is required that the divertor reach a temperature of 350 C. Thermal losses in the piping and from the divertor itself require that the gas supply temperature be maintained above that temperature in order to ensure that all of the divertor components reach the required temperature. The analysis described in this report was conducted in order to estimate the required supply temperature from the gas heater.

Yoder Jr, Graydon L [ORNL; Harvey, Karen [ORNL; Ferrada, Juan J [ORNL

2011-02-01T23:59:59.000Z

385

PSNC Energy (Gas)- Energy-Efficient Appliance Rebate Program  

Broader source: Energy.gov [DOE]

PSNC offers rebates to customers who purchase energy-efficient natural gas water heaters or natural gas furnaces. The rebate is available only when existing natural gas-fired water heating or...

386

Pool boiling heat transfer enhancement over cylindrical tubes with water at atmospheric pressure, Part I: Experimental results  

E-Print Network [OSTI]

Pool boiling heat transfer enhancement over cylindrical tubes with water at atmospheric pressure online 4 May 2013 Keywords: Pool boiling Heat transfer enhancement Open microchannels Cylindrical tube boiling heat transfer over enhanced cylindrical microchannel test surfaces with water at atmospheric

Kandlikar, Satish

387

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

E-Print Network [OSTI]

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

Oak Ridge National Laboratory

388

Subcooled flow boiling heat transfer and critical heat flux in water-based nanofluids at low pressure  

E-Print Network [OSTI]

A nanofluid is a colloidal suspension of nano-scale particles in water, or other base fluids. Previous pool boiling studies have shown that nanofluids can improve the critical heat flux (CHF) by as much as 200%. In this ...

Kim, Sung Joong, Ph. D. Massachusetts Institute of Technology

2009-01-01T23:59:59.000Z

389

Heat transfer and pressure drop data for high heat flux densities to water at high subcritical pressures  

E-Print Network [OSTI]

Local surface ooeffioients of heat t-ansfer, overall pressure drop data and mean friction factor are presented for heat flamms up to 3.52106 BtuAr ft2 for water flowing in a nickel tabe isder the following conditions: mass ...

Rohsenow, Warren M.

1951-01-01T23:59:59.000Z

390

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

391

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

E-Print Network [OSTI]

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

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

2010-01-01T23:59:59.000Z

392

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

E-Print Network [OSTI]

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

Franco, Victor

2011-01-01T23:59:59.000Z

393

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

SciTech Connect (OSTI)

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

Rudd, A.

2012-08-01T23:59:59.000Z

394

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

SciTech Connect (OSTI)

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

Not Available

2010-06-01T23:59:59.000Z

395

Massively-Parallel Direct Numerical Simulation of Gas Turbine Endwall Film-Cooling Conjugate Heat Transfer  

E-Print Network [OSTI]

MASSIVELY-PARALLEL DIRECT NUMERICAL SIMULATION OF GAS TURBINE ENDWALL FILM-COOLING CONJUGATE HEAT TRANSFER A Thesis by CHARLES MICHAEL MEADOR Submitted to the O ce of Graduate Studies of Texas A&M University in partial ful llment of the requirements... for the degree of MASTER OF SCIENCE December 2010 Major Subject: Mechanical Engineering MASSIVELY-PARALLEL DIRECT NUMERICAL SIMULATION OF GAS TURBINE ENDWALL FILM-COOLING CONJUGATE HEAT TRANSFER A Thesis by CHARLES MICHAEL MEADOR Submitted to the O ce of Graduate...

Meador, Charles Michael

2011-02-22T23:59:59.000Z

396

Low-pressure-ratio regenerative exhaust-heated gas turbine. Final report  

SciTech Connect (OSTI)

A design study of coal-burning gas-turbine engines using the exhaust-heated cycle and state-of-the-art components has been completed. In addition, some initial experiments on a type of rotary ceramic-matrix regenerator that would be used to transfer heat from the products of coal combustion in the hot turbine exhaust to the cool compressed air have been conducted. Highly favorable results have been obtained on all aspects on which definite conclusions could be drawn.

Tampe, L.A.; Frenkel, R.G.; Kowalick, D.J.; Nahatis, H.M.; Silverstein, S.M.; Wilson, D.G.

1991-01-01T23:59:59.000Z

397

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

398

Tips: Natural Gas and Oil Heating Systems | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassiveSubmittedStatusButler Tina Butler Tina-Butler.jpg TinaLaundry Tips:Natural Gas

399

District of Columbia Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 633 622 56623 4623and Commercial Consumers by

400

District of Columbia Heat Content of Natural Gas Consumed  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 633 622 56623 4623and Commercial Consumers bySep-14

Note: This page contains sample records for the topic "gas water heating" 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

Study on Performance Verification and Evaluation of District Heating and Cooling System Using Thermal Energy of River Water  

E-Print Network [OSTI]

source and cooling water overall (in comparison with normal system 15% of energy saving) -Adopt large-scale ice heat storage system and realize equalization of electricity load -Adopt turbo chiller and heat recovery facilities as high efficiency heat... screw heat pump - 838MJ/? 1 IHP/Water source screw heat pump (Ice storage and heat recovery) Cool water? 3,080MJ/h Ice Storage? 1,936MJ/h Cool water heat recovery? 3,606MJ/h Ice storage heat recovery? 2,448MJ/h 8Unit ?16? TR1 Water cooling turbo...

Takahashi,N.; Niwa, H.; Kawano,M.; Koike,K.; Koga,O.; Ichitani, K.; Mishima,N.

2014-01-01T23:59:59.000Z

402

Experimental investigation on the photovoltaic-thermal solar heat pump air-conditioning system on water-heating mode  

SciTech Connect (OSTI)

An experimental study on operation performance of photovoltaic-thermal solar heat pump air-conditioning system was conducted in this paper. The experimental system of photovoltaic-thermal solar heat pump air-conditioning system was set up. The performance parameters such as the evaporation pressure, the condensation pressure and the coefficient of performance (COP) of heat pump air-conditioning system, the water temperature and receiving heat capacity in water heater, the photovoltaic (PV) module temperature and the photovoltaic efficiency were investigated. The experimental results show that the mean photovoltaic efficiency of photovoltaic-thermal (PV/T) solar heat pump air-conditioning system reaches 10.4%, and can improve 23.8% in comparison with that of the conventional photovoltaic module, the mean COP of heat pump air-conditioning system may attain 2.88 and the water temperature in water heater can increase to 42 C. These results indicate that the photovoltaic-thermal solar heat pump air-conditioning system has better performances and can stably work. (author)

Fang, Guiyin; Hu, Hainan; Liu, Xu [Department of Physics, Nanjing University, Nanjing 210093 (China)

2010-09-15T23:59:59.000Z

403

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

SciTech Connect (OSTI)

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

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

2012-11-01T23:59:59.000Z

404

Measured Performance and Analysis of Ground Source Heat Pumps for Space Conditioning and for Water Heating in a Low-Energy Test House Operated under Simulated Occupancy Conditions  

SciTech Connect (OSTI)

In this paper we present measured performance and efficiency metrics of Ground Source Heat Pumps (GSHPs) for space conditioning and for water heating connected to a horizontal ground heat exchanger (GHX) loop. The units were installed in a 345m2 (3700ft2) high-efficiency test house built with structural insulated panels (SIPs), operated under simulated occupancy conditions, and located in Oak Ridge, Tennessee (USA) in US Climate Zone 4 . The paper describes distinctive features of the building envelope, ground loop, and equipment, and provides detailed monthly performance of the GSHP system. Space conditioning needs of the house were completely satisfied by a nominal 2-ton (7.0 kW) water-to-air GSHP (WA-GSHP) unit with almost no auxiliary heat usage. Recommendations for further improvement through engineering design changes are identified. The comprehensive set of data and analyses demonstrate the feasibility and practicality of GSHPs in residential applications and their potential to help achieve source energy and greenhouse gas emission reduction targets set under the IECC 2012 Standard.

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

2012-01-01T23:59:59.000Z

405

MathematicalGeology, Vol. 11,No. I,1979 Modeling and Optimizing a Gas-Water Reservoir  

E-Print Network [OSTI]

of gas in psia pressure of gas in psia at time t constant production rate of gas in moles per year production rate at time t in moles per year ideal gas constant constant rate of water injection in cubic feet of the reservoir in cubic feet, below which gas production ceases initial reservoir volume in cubic feet reservoir

Waterman, Michael S.

406

Modelling of the dynamics of a low-speed gas-liquid heat engine  

SciTech Connect (OSTI)

This paper deals with the simulation model of a gas-liquid heat engine which is characterized by very low speeds (1-3 rpm) and relatively high torque. The engine operates according to the Minto Thermal Wheel' principle. It is based on the conversion of thermal energy from the heat source, through gas expansion, into mechanical work, by means of the fall of a mass of liquid. A prototype has already been constructed showing great ability to operate at very low temperature differences between the heat source and heat sink. This makes the engine quite suitable to the utilization of low temperature heat sources such as solar energy and waste heat. On the other hand, the number of moving parts is kept to a minimum, since the piston of traditional positive displacement engines (PDE) is now replaced simply by a mass of liquid. The mathematical model consists of applying the energy equation, in it time-derivative form, to representative engine control volumes, resulting in a set of linear ordinary differential equations. Their integration provides the time variation of pressure and temperature of the working fluid. The engine performance can thus be predicted as a function of engine operating conditions and geometric characteristics. In this paper, the engine dynamics (i.e., variable angular speed) have been taken into account, as well as heat losses in the engine structure. Results and further design considerations are discussed.

Cunha, C.M.P.; Parise, J.A.R. (Pontificia Univ. Catolica do Rio de Janeiro (Brazil))

1992-01-01T23:59:59.000Z

407

Direct Gas Fired Air Heating For 40 to 50% Fuel Savings  

E-Print Network [OSTI]

the safety aspects of direct gas fired air heating, the most important qUe~tion is whether there would be a harmful build up of carbon monoxide within the building as a result of!the products of combustion being released directly into the air stream.... The unvented infrared heaterslhave long been proven safe from this standpoint. By looking at the fundamental chemistry of combustion! of natural gas, the direct gas-fired make-up air heaters can be shown to produce lower concentrationsII of carbon monoxide...

Searcy, J. A.

1979-01-01T23:59:59.000Z

408

Couette flow regimes with heat transfer in rarefied gas  

SciTech Connect (OSTI)

Based on numerical solution of the Boltzmann equation by direct statistic simulation, the Couette flow with heat transfer is studied in a broad range of ratios of plate temperatures and Mach numbers of a moving plate. Flow regime classification by the form of the dependences of the energy flux and friction stress on the Knudsen number Kn is proposed. These dependences can be simultaneously monotonic and nonmonotonic and have maxima. Situations are possible in which the dependence of the energy flux transferred to a plate on Kn has a minimum, while the dependence of the friction stress is monotonic or even has a maximum. Also, regimes exist in which the dependence of the energy flux on Kn has a maximum, while the dependence of the friction stress is monotonic, and vice versa.

Abramov, A. A., E-mail: alabr54@mail.ru; Butkovskii, A. V., E-mail: albutkov@mail.ru [Zhukovski Central Aerohydrodynamics Institute (Russian Federation)

2013-06-15T23:59:59.000Z

409

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

410

Gasbuggy, New Mexico, Natural Gas and Produced Water Sampling and Analysis Results for 2011  

SciTech Connect (OSTI)

The U.S. Department of Energy (DOE) Office of Legacy Management conducted natural gas sampling for the Gasbuggy, New Mexico, site on June 7 and 8, 2011. Natural gas sampling consists of collecting both gas samples and samples of produced water from gas production wells. Water samples from gas production wells were analyzed for gamma-emitting radionuclides, gross alpha, gross beta, and tritium. Natural gas samples were analyzed for tritium and carbon-14. ALS Laboratory Group in Fort Collins, Colorado, analyzed water samples. Isotech Laboratories in Champaign, Illinois, analyzed natural gas samples.

None

2011-09-01T23:59:59.000Z

411

Spin states of para-water and ortho-water molecule in gas and liquid phases  

E-Print Network [OSTI]

Spin degrees of freedom of water molecule in gas and liquid state were investigated in order to provide a reasonable answer about the unsolved problem of a long-term behavior of water spin isomers. The approach used involves an assumption that molecules change their spin state from a pure state to a mixed one when they interact with some sorts of adsorbent surface. Some models and conceptions of the quantum information processing were used.

V. K. Konyukhov

2009-09-23T23:59:59.000Z

412

Field monitoring and evaluation of a residential gas-engine-driven heat pump: Volume 2, Heating season  

SciTech Connect (OSTI)

The Federal Government is the largest single energy consumer in the United States; consumption approaches 1.5 quads/year of energy (1 quad = 10{sup 15} Btu) at a cost valued at nearly $10 billion annually. The US Department of Energy (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 national multiprogram laboratories that participate in the NTDP by providing technical expertise and equipment to evaluate new, energy-saving technologies being studied and evaluated under that program. This two-volume report describes 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 gas-engine-driven heat pump. The unit was installed at a single residence at Fort Sam Houston, a US Army base in San Antonio, Texas, and the performance was monitored under the NTDP. Participating in this effort under a Cooperative Research and Development Agreement (CRADA) were York International, the heat pump manufacturer; Gas Research Institute (GRI), the technology developer; City Public Service of San Antonio, the local utility; American Gas Cooling Center (AGCC); Fort Sam Houston; and PNL.

Miller, J.D.

1995-11-01T23:59:59.000Z

413

Break-Even Cost for Residential Solar Water Heating in the United States: Key Drivers and Sensitivities  

SciTech Connect (OSTI)

This paper examines the break-even cost for residential rooftop solar water heating (SWH) technology, defined as the point where the cost of the energy saved with a SWH system equals the cost of a conventional heating fuel purchased from the grid (either electricity or natural gas). We examine the break-even cost for the largest 1,000 electric and natural gas utilities serving residential customers in the United States as of 2008. Currently, the break-even cost of SWH in the United States varies by more than a factor of five for both electricity and natural gas, despite a much smaller variation in the amount of energy saved by the systems (a factor of approximately one and a half). The break-even price for natural gas is lower than that for electricity due to a lower fuel cost. We also consider the relationship between SWH price and solar fraction and examine the key drivers behind break-even costs. Overall, the key drivers of the break-even cost of SWH are a combination of fuel price, local incentives, and technical factors including the solar resource location, system size, and hot water draw.

Cassard, H.; Denholm, P.; Ong, S.

2011-02-01T23:59:59.000Z

414

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

E-Print Network [OSTI]

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

Franco, Victor

2011-01-01T23:59:59.000Z

415

Theoretical study of gas heated in a porous material subjected to a concentrated solar radiation (*)  

E-Print Network [OSTI]

W solar furnace of Solar Energy Laboratory in Odeillo (France). Revue Phys. Appl. 15 (1980) 423-426 MARS423 Theoretical study of gas heated in a porous material subjected to a concentrated solar exposed to the solar radiation. These quantities may be expressed in any set consistent units. 1

Paris-Sud XI, Université de

416

Reduced heat flow in light water (H2O) due to heavy water (D2O) William R. Gormana)  

E-Print Network [OSTI]

Reduced heat flow in light water (H2O) due to heavy water (D2O) William R. Gormana) and James D by over 1000% with the addition of heavy water. A column of light water cools from 25°C to 0°C in 11 hours, however, with the addition of heavy water it takes more than 100 hours. There is a concentration

Suzuki, Masatsugu

417

Can carbon finance contribute to the promotion of solar water heating in Bolivia?   

E-Print Network [OSTI]

Residential applications of renewable energy can contribute to reducing greenhouse gas emissions while improving the quality of life for households. Thermosiphon solar water heaters are passive systems using solar energy to supply hot water...

Hayek, Niklas

2011-11-24T23:59:59.000Z

418

Air bottoming cycle: Use of gas turbine waste heat for power generation  

SciTech Connect (OSTI)

This paper presents a thermodynamic analysis of the Air Bottoming Cycle (ABC) as well as the results of a feasibility study for using the Air Bottoming Cycle for gas turbine waste heat recovery/power generation on oil/gas platforms in the North Sea. The basis for the feasibility study was to utilize the exhaust gas heat from an LM2500PE gas turbine. Installation of the ABC on both a new and an existing platform have been considered. A design reference case is presented, and the recommended ABC is a two-shaft engine with two compressor intercoolers. The compression pressure ratio was found optimal at 8:1. The combined gas turbine and ABC shaft efficiency wa/s calculated to 46.6 percent. The LM2500PE gas turbine contributes with 36.1 percent while the ABC adds 10.5 percent points to the gas turbine efficiency. The ABC shaft power output is 6.6 MW when utilizing the waste heat of an LM2500PE gas turbine. A preliminary thermal and hydraulic design of the ABC main components (compressor, turbine, intercoolers, and recuperator) was carried out. The recuperator is the largest and heaviest component (45 tons). A weight and cost breakdown of the ABC is presented. The total weight of the ABC package was calculated to 154 metric tons, and the ABC package cost to 9.4 million US$. An economical examination for three different cases was carried out. The results show that the ABC alternative (LM2500PE + ABC) is economical, with a rather good margin, compared to the other alternatives. The conclusion is that the Air Bottoming Cycle is an economical alternative for power generation on both new platforms and on existing platforms with demand for more power.

Bolland, O.; Foerde, M. [Norwegian Univ. of Science and Technology, Trondheim (Norway). Div. of Thermal Energy and Hydropower; Haande, B. [Oil Engineering Consultants, Sandvika (Norway)

1996-04-01T23:59:59.000Z

419

Economical Analysis of a Groundwater Source Heat Pump with Water Thermal Storage System  

E-Print Network [OSTI]

The paper is based on a chilled and heat source for the building which has a total area of 140000m2 in the suburb of Beijing. By comparing the groundwater source heat pump of water thermal storage (GHPWTS) with a conventional chilled and heat source...

Zhou, Z.; Xu, W.; Li, J.; Zhao, J.; Niu, L.

2006-01-01T23:59:59.000Z

420

Summary Weusedthreemethodstomeasureboundarylayer conductance to heat transfer (gbH) and water vapor transfer  

E-Print Network [OSTI]

Summary Weusedthreemethodstomeasureboundarylayer conductance to heat transfer (gbH) and water vapor of transpiration). The boundary layer conductance to heat transfer is small enough that leaf temperature can become diffusion, the boundary layer around a leaf also provides resistance to the transfer of heat between a leaf

Martin, Timothy

Note: This page contains sample records for the topic "gas water heating" 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

Short communication Control of brown rot of stone fruits by brief heated water immersion treatments  

E-Print Network [OSTI]

Short communication Control of brown rot of stone fruits by brief heated water immersion treatments. Several studies have shown that hot water treatments by themselves or in combination with other treatments they require are an issue that has hindered the commercial adoption of hot water treatments. While higher water

Crisosto, Carlos H.

422

Application Prospect Analysis of the Surface Water Source Heat-Pump in China  

E-Print Network [OSTI]

Surface water resources in China are rather abundant and it can be use as the heat or cool source for heat pump. The winter surface water temperatures of 17 typical cities are investigated in December, and they are all distributed in the interval...

Zhang, C.; Zhuang, Z.; Huang, L.; Li, X.; Li, G.; Sun, D.

2006-01-01T23:59:59.000Z

423

Minimizing Water Production from Unconventional Gas Wells Using a Novel Environmentally Benign Polymer Gel System  

E-Print Network [OSTI]

Excess water production is a major economic and environmental problem for the oil and gas industry. The cost of processing excess water runs into billions of dollars. Polymer gel technology has been successfully used in controlling water influx...

Gakhar, Kush

2012-02-14T23:59:59.000Z

424

[Waste water heat recovery system]. Final report, September 30, 1992  

SciTech Connect (OSTI)

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

Not Available

1993-04-28T23:59:59.000Z

425

WATER-GAS SHIFT WITH INTEGRATED HYDROGEN SEPARATION  

SciTech Connect (OSTI)

Optimization of the water-gas shift (WGS) reaction system for hydrogen production for fuel cells is of particular interest to the energy industry. To this end, it is desirable to couple the WGS reaction to hydrogen separation using a semi-permeable membrane, with both processes carried out at high temperature to improve reaction kinetics. Reduced equilibrium conversion of the WGS reaction at high temperatures is overcome by product H{sub 2} removal via the membrane. This project involves fundamental research and development of novel cerium oxide-based catalysts for the water-gas-shift reaction and the integration of these catalysts with Pd-alloy H{sub 2}-separation membranes supplying high purity hydrogen for fuel cell use. Conditions matching the requirements of coal gasifier-exit gas streams will be examined in the project. In the first year of the project, we prepared a series of nanostructured Cu- and Fe-containing ceria catalysts by a special gelation/precipitation technique followed by air calcination at 650 C. Each sample was characterized by ICP for elemental composition analysis, BET-N2 desorption for surface area measurement, and by temperature-programmed reduction in H{sub 2} to evaluate catalyst reducibility. Screening WGS tests with catalyst powders were conducted in a flow microreactor at temperatures in the range of 200-550 C. On the basis of both activity and stability of catalysts in simulated coal gas, and in CO{sub 2}-rich gases, a Cu-CeO{sub 2} catalyst formulation was selected for further study in this project. Details from the catalyst development and testing work are given in this report. Also in this report, we present H{sub 2} permeation data collected with unsupported flat membranes of pure Pd and Pd-alloys over a wide temperature window.

Maria Flytzani-Stephanopoulos; Jerry Meldon; Xiaomei Qi

2001-12-01T23:59:59.000Z

426

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

E-Print Network [OSTI]

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

427

The construction and use of aquifer influence functions in determining original gas in place for water-drive gas reservoirs  

E-Print Network [OSTI]

THE CONSTRUCTION AND USE OF AQUIFER INFLUENCE FUNCTIONS IN DETERMINING ORIGINAL GAS IN PLACE FOR WATER-DRIVE GAS RESERVOIRS A Thesis by RONALD JOSEPH GAJDICA Submitted to the Graduate College of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE December 1986 Major Subject: Petroleum Engineering THE CONSTRUCTION AND USE OF AQUIFER INFLUENCE FUNCTIONS IN DETERMINING ORIGINAL GAS IN PLACE FOR MATER-DRIVE GAS RESERVOIRS A Thesis by RONALD JOSEPH...

Gajdica, Ronald Joseph

1986-01-01T23:59:59.000Z

428

Heat Flow and Gas Hydrates on the Continental Margin of India: Building on Results from NGHP Expedition 01  

SciTech Connect (OSTI)

The Indian National Gas Hydrate Program (NGHP) Expedition 01 presented the unique opportunity to constrain regional heat flow derived from seismic observations by using drilling data in three regions on the continental margin of India. The seismic bottom simulating reflection (BSR) is a well-documented feature in hydrate bearing sediments, and can serve as a proxy for apparent heat flow if data are available to estimate acoustic velocity and density in water and sediments, thermal conductivity, and seafloor temperature. Direct observations of temperature at depth and physical properties of the sediment obtained from drilling can be used to calibrate the seismic observations, decreasing the uncertainty of the seismically-derived estimates. Anomalies in apparent heat flow can result from a variety of sources, including sedimentation, erosion, topographic refraction and fluid flow. We constructed apparent heat flow maps for portions of the Krishna-Godavari (K-G) basin, the Mahanadi basin, and the Andaman basin and modeled anomalies using 1-D conductive thermal models. Apparent heat flow values in the Krishna-Godavari (K-G) basin and Mahanadi basin are generally 0.035 to 0.055 watts per square meter (W/m{sup 2}). The borehole data show an increase in apparent heat flow as water depth increases from 900 to 1500 m. In the SW part of the seismic grid, 1D modeling of the effect of sedimentation on heat flow shows that {approx}50% of the observed increase in apparent heat flow with increasing water depth can be attributed to trapping of sediments behind a 'toe-thrust' ridge that is forming along the seaward edge of a thick, rapidly accumulating deltaic sediment pile. The remainder of the anomaly can be explained either by a decrease in thermal conductivity of the sediments filling the slope basin or by lateral advection of heat through fluid flow along stratigraphic horizons within the basin and through flexural faults in the crest of the anticline. Such flow probably plays a role in bringing methane into the ridge formed by the toe-thrust. Because of the small anomaly due to this process and the uncertainty in thermal conductivity, we did not model this process explicitly. In the NE part of the K-G basin seismic grid, a number of local heat flow lows and highs are observed, which can be attributed to topographic refraction and to local fluid flow along faults, respectively. No regional anomaly can be resolved. Because of lack of continuity between the K-G basin sites within the seismic grid and those {approx}70 km to the NE in water depths of 1200 to 1500 m, we do not speculate on the reason for higher heat flow at these depths. The Mahanadi basin results, while limited in geographic extent, are similar to those for the K-G basin. The Andaman basin exhibits much lower apparent heat flow values, ranging from 0.015 to 0.025 W/m{sup 2}. Heat flow here also appears to increase with increasing water depth. The very low heat flow here is among the lowest heat flow observed anywhere and gives rise to a very thick hydrate stability zone in the sediments. Through 1D models of sedimentation (with extremely high sedimentation rates as a proxy for tectonic thickening), we concluded that the very low heat flow can probably be attributed to the combined effects of high sedimentation rate, low thermal conductivity, tectonic thickening of sediments and the cooling effect of a subducting plate in a subduction zone forearc. Like for the K-G basin, much of the local variability can be attributed to topography. The regional increase in heat flow with water depth remains unexplained because the seismic grid available to us did not extend far enough to define the local tectonic setting of the slope basin controlling this observational pattern. The results are compared to results from other margins, both active and passive. While an increase in apparent heat flow with increasing water depth is widely observed, it is likely a result of different processes in different places. The very low heat flow due to sedimentation and tectonics in the Andaman basi

Anne Trehu; Peter Kannberg

2011-06-30T23:59:59.000Z

429

Heat Flow and Gas Hydrates on the Continental Margin of India: Building on Results from NGHP Expedition 01  

SciTech Connect (OSTI)

The Indian National Gas Hydrate Program (NGHP) Expedition 01 presented the unique opportunity to constrain regional heat flow derived from seismic observations by using drilling data in three regions on the continental margin of India. The seismic bottom simulating reflection (BSR) is a well-documented feature in hydrate bearing sediments, and can serve as a proxy for apparent heat flow if data are available to estimate acoustic velocity and density in water and sediments, thermal conductivity, and seafloor temperature. Direct observations of temperature at depth and physical properties of the sediment obtained from drilling can be used to calibrate the seismic observations, decreasing the uncertainty of the seismically-derived estimates. Anomalies in apparent heat flow can result from a variety of sources, including sedimentation, erosion, topographic refraction and fluid flow. We constructed apparent heat flow maps for portions of the Krishna-Godavari (K-G) basin, the Mahanadi basin, and the Andaman basin and modeled anomalies using 1-D conductive thermal models. Apparent heat flow values in the Krishna-Godavari (K-G) basin and Mahanadi basin are generally 0.035 to 0.055 watts per square meter (W/m2). The borehole data show an increase in apparent heat flow as water depth increases from 900 to 1500 m. In the SW part of the seismic grid, 1D modeling of the effect of sedimentation on heat flow shows that ~50% of the observed increase in apparent heat flow with increasing water depth can be attributed to trapping of sediments behind a "toe-thrust" ridge that is forming along the seaward edge of a thick, rapidly accumulating deltaic sediment pile. The remainder of the anomaly can be explained either by a decrease in thermal conductivity of the sediments filling the slope basin or by lateral advection of heat through fluid flow along stratigraphic horizons within the basin and through flexural faults in the crest of the anticline. Such flow probably plays a role in bringing methane into the ridge formed by the toe-thrust. Because of the small anomaly due to this process and the uncertainty in thermal conductivity, we did not model this process explicitly. In the NE part of the K-G basin seismic grid, a number of local heat flow lows and highs are observed, which can be attributed to topographic refraction and to local fluid flow along faults, respectively. No regional anomaly can be resolved. Because of lack of continuity between the K-G basin sites within the seismic grid and those ~70 km to the NE in water depths of 1200 to 1500 m, we do not speculate on the reason for higher heat flow at these depths. The Mahanadi basin results, while limited in geographic extent, are similar to those for the KG basin. The Andaman basin exhibits much lower apparent heat flow values, ranging from 0.015 to 0.025 W/m2. Heat flow here also appears to increase with increasing water depth. The very low heat flow here is among the lowest heat flow observed anywhere and gives rise to a very thick hydrate stability zone in the sediments. Through 1D models of sedimentation (with extremely high sedimentation rates as a proxy for tectonic thickening), we concluded that the very low heat flow can probably be attributed to the combined effects of high sedimentation rate, low thermal conductivity, tectonic thickening of sediments and the cooling effect of a subducting plate in a subduction zone forearc. Like for the K-G basin, much of the local variability can be attributed to topography. The regional increase in heat flow with water depth remains unexplained because the seismic grid available to us did not extend far enough to define the local tectonic setting of the slope basin controlling this observational pattern. The results are compared to results from other margins, both active and passive. While an increase in apparent heat flow with increasing water depth is widely observed, it is likely a result of different processes in different places. The very low heat flow due to sedimentation and tectonics in the Andaman basin is at the low end of glob

Trehu, Anne; Kannberg, Peter

2011-06-30T23:59:59.000Z

430

A Novel Absorption Cycle for Combined Water Heating, Dehumidification, and Evaporative Cooling  

SciTech Connect (OSTI)

In this study, development of a novel system for combined water heating, dehumidification, and space evaporative cooling is discussed. Ambient water vapor is used as a working fluid in an open system. First, water vapor is absorbed from an air stream into an absorbent solution. The latent heat of absorption is transferred into the process water that cools the absorber. The solution is then regenerated in the desorber, where it is heated by a heating fluid. The water vapor generated in the desorber is condensed and its heat of phase change is transferred to the process water in the condenser. The condensed water can then be used in an evaporative cooling process to cool the dehumidified air exiting the absorber, or it can be drained if primarily dehumidification is desired. Essentially, this open absorption cycle collects space heat and transfers it to process water. This technology is enabled by a membrane-based absorption/desorption process in which the absorbent is constrained by hydrophobic vapor-permeable membranes. Constraining the absorbent film has enabled fabrication of the absorber and desorber in a plate-and-frame configuration. An air stream can flow against the membrane at high speed without entraining the absorbent, which is a challenge in conventional dehumidifiers. Furthermore, the absorption and desorption rates of an absorbent constrained by a membrane are greatly enhanced. Isfahani and Moghaddam (Int. J. Heat Mass Transfer, 2013) demonstrated absorption rates of up to 0.008 kg/m2s in a membrane-based absorber and Isfahani et al. (Int. J. Multiphase Flow, 2013) have reported a desorption rate of 0.01 kg/m2s in a membrane-based desorber. The membrane-based architecture also enables economical small-scale systems, novel cycle configurations, and high efficiencies. The absorber, solution heat exchanger, and desorber are fabricated on a single metal sheet. In addition to the open arrangement and membrane-based architecture, another novel feature of the cycle is recovery of the solution heat energy exiting the desorber by process water (a process-solution heat exchanger ) rather than the absorber exiting solution (the conventional solution heat exchanger ). This approach has enabled heating the process water from an inlet temperature of 15 C to 57 C (conforming to the DOE water heater test standard) and interfacing the process water with absorbent on the opposite side of a single metal sheet encompassing the absorber, process-solution heat exchanger, and desorber. The system under development has a 3.2 kW water heating capacity and a target thermal coefficient of performance (COP) of 1.6.

CHUGH, Devesh [University of Florida, Gainesville; Gluesenkamp, Kyle R [ORNL; Abdelaziz, Omar [ORNL; Moghaddam, Saeed [University of Florida, Gainesville

2014-01-01T23:59:59.000Z

431

Measured Space Conditioning and Water Heating Performance of a Ground-Source Integrated Heat Pump in a Residential Application  

SciTech Connect (OSTI)

In an effort to reduce residential building energy consumption, a ground-source integrated heat pump was developed to meet a home s entire space conditioning and water heating needs, while providing 50% energy savings relative to a baseline suite of minimum efficiency equipment. A prototype 7.0 kW system was installed in a 344 m2 research house with simulated occupancy in Oak Ridge, TN. The equipment was monitored from June 2012 through January 2013.

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

2014-01-01T23:59:59.000Z

432

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

433

Gasbuggy, New Mexico, Natural Gas and Produced Water Sampling Results for 2012  

SciTech Connect (OSTI)

The U.S. Department of Energy (DOE) Office of Legacy Management conducted annual natural gas sampling for the Gasbuggy, New Mexico, Site on June 20 and 21, 2012. This long-term monitoring of natural gas includes samples of produced water from gas production wells that are located near the site. Water samples from gas production wells were analyzed for gamma-emitting radionuclides, gross alpha, gross beta, and tritium. Natural gas samples were analyzed for tritium and carbon-14. ALS Laboratory Group in Fort Collins, Colorado, analyzed water samples. Isotech Laboratories in Champaign, Illinois, analyzed natural gas samples.

None

2012-12-01T23:59:59.000Z

434

Application of advanced Stirling engine technology to a commercial size gas-fired heat pump  

SciTech Connect (OSTI)

The Gas Research Institute sponsored work on the kinematic Stirling engine-driven heat pump, which offers practical improvements in the use of natural gas. Results from the first phase of the program led to the selection of a method of introducing low pressure natural gas into the V160 engine's combustor and testing of the ejector system. Further engine modifications will be needed as well as demonstrations of the performance and reliability of the units. The first phase found all developmental needs to be achievable, making the concept technically feasible. Computer projections based on the system performance of components indicate the gas-fired pump will work better than electric models and be economically feasible as well. 5 figures, 1 table.

Johansson, L.; Agno, J.; Wurm, J.

1985-08-01T23:59:59.000Z

435

Private Water Well Testing in Areas Impacted by Marcellus Shale Gas Drilling  

E-Print Network [OSTI]

Private Water Well Testing in Areas Impacted by Marcellus Shale Gas Drilling (Updated November 15th in the absence of shale-gas drilling, well owners are strongly encouraged to evaluate their water on a regular review of shale gas drilling in New York State, as well as the most comprehensive collection of data

Manning, Sturt

436

Environmental turbulent mixing controls on air-water gas exchange in marine and aquatic systems  

E-Print Network [OSTI]

linked with gas transfer. Microbreaking, or the breakdown of small-scale waves that do not entrain airEnvironmental turbulent mixing controls on air-water gas exchange in marine and aquatic systems; accepted 5 April 2007; published 17 May 2007. [1] Air-water gas transfer influences CO2 and other

Ho, David

437

Zero Liquid Discharge (ZLD) System for Flue-Gas Derived Water From Oxy-Combustion Process  

SciTech Connect (OSTI)

Researchers at the National Energy Technology Laboratory (NETL) located in Albany, Oregon, have patented a process - Integrated Pollutant Removal (IPR) that uses off-the-shelf technology to produce a sequestration ready CO{sub 2} stream from an oxy-combustion power plant. Capturing CO{sub 2} from fossil-fuel combustion generates a significant water product which can be tapped for use in the power plant and its peripherals. Water condensed in the IPR{reg_sign} process may contain fly ash particles, sodium (from pH control), and sulfur species, as well as heavy metals, cations and anions. NETL is developing a treatment approach for zero liquid discharge while maximizing available heat from IPR. Current treatment-process steps being studied are flocculation/coagulation, for removal of cations and fine particles, and reverse osmosis, for anion removal as well as for scavenging the remaining cations. After reverse osmosis process steps, thermal evaporation and crystallization steps will be carried out in order to build the whole zero liquid discharge (ZLD) system for flue-gas condensed wastewater. Gypsum is the major product from crystallization process. Fast, in-line treatment of water for re-use in IPR seems to be one practical step for minimizing water treatment requirements for CO{sub 2} capture. The results obtained from above experiments are being used to build water treatment models.

Sivaram Harendra; Danylo Oryshchyn; Thomas Ochs; Stephen J. Gerdemann; John Clark

2011-10-16T23:59:59.000Z

438

An Analysis of the Use of Fluidized-Bed Heat Exchangers for Heat Recovery  

E-Print Network [OSTI]

are presented for a FBWHB system that would produce hot water by recovering part of the heat energy contained in a hot gas....

Vogel, G. J.; Grogan, P. J.

1980-01-01T23:59:59.000Z

439

Gas-Liquid Coexistence in the Primitive Model for Water  

E-Print Network [OSTI]

We evaluate the location of the gas-liquid coexistence line and of the associated critical point for the primitive model for water (PMW), introduced by Kolafa and Nezbeda [J. Kolafa and I. Nezbeda, Mol. Phys. 61, 161 (1987)]. Besides being a simple model for a molecular network forming liquid, the PMW is representative of patchy proteins and novel colloidal particles interacting with localized directional short-range attractions. We show that the gas-liquid phase separation is metastable, i.e. it takes place in the region of the phase diagram where the crystal phase is thermodynamically favored, as in the case of articles interacting via short-range attractive spherical potentials. Differently from spherical potentials, we do not observe crystallization close to the critical point. The region of gas-liquid instability of this patchy model is significantly reduced as compared to equivalent models of spherically interacting particles, confirming the possibility of observing kinetic arrest in an homogeneous sample driven by bonding as opposed to packing.

F. Romano; P. Tartaglia; F. Sciortino

2007-05-08T23:59:59.000Z

440

Adding Environmental Gas Physics to the Semi-Analytic Method for Galaxy Formation: Gravitational Heating  

E-Print Network [OSTI]

We present results of an attempt to include more detailed gas physics motivated from hydrodynamical simulations within semi-analytic models (SAM) of galaxy formation, focusing on the role that environmental effects play. The main difference to previous SAMs is that we include 'gravitational' heating of the intra-cluster medium (ICM) by the net surplus of gravitational potential energy released from gas that has been stripped from infalling satellites. Gravitational heating appears to be an efficient heating source able to prevent cooling in environments corresponding to dark matter halos more massive than $\\sim 10^{13} $M$_{\\odot}$. The energy release by gravitational heating can match that by AGN-feedback in massive galaxies and can exceed it in the most massive ones. However, there is a fundamental difference in the way the two processes operate. Gravitational heating becomes important at late times, when the peak activity of AGNs is already over, and it is very mass dependent. This mass dependency and time behaviour gives the right trend to recover down-sizing in the star-formation rate of massive galaxies. Abridged...

S. Khochfar; J. P. Ostriker

2007-04-18T23:59:59.000Z

Note: This page contains sample records for the topic "gas water heating" 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

WATER-GAS SHIFT WITH INTEGRATED HYDROGEN SEPARATION PROCESS  

SciTech Connect (OSTI)

This project involved fundamental research and development of novel cerium oxide-based catalysts for the water-gas-shift reaction and the integration of these catalysts with Pd-alloy H{sub 2} -separation membranes supplying high purity hydrogen for fuel cell use. Conditions matching the requirements of coal gasifier-exit gas streams were examined in the project. Cu-cerium oxide was identified as the most promising high-temperature water-gas shift catalyst for integration with H{sub 2}-selective membranes. Formulations containing iron oxide were found to deactivate in the presence of CO{sub 2}. Cu-containing ceria catalysts, on the other hand, showed high stability in CO{sub 2}-rich gases. This type gas will be present over much of the catalyst, as the membrane removes the hydrogen produced from the shift reaction. The high-temperature shift catalyst composition was optimized by proper selection of dopant type and amount in ceria. The formulation 10at%Cu-Ce(30at%La)O{sub x} showed the best performance, and was selected for further kinetic studies. WGS reaction rates were measured in a simulated coal-gas mixture. The apparent activation energy, measured over aged catalysts, was equal to 70.2 kJ/mol. Reaction orders in CO, H{sub 2}O, CO{sub 2} and H{sub 2} were found to be 0.8, 0.2, -0.3, and -0.3, respectively. This shows that H{sub 2}O has very little effect on the reaction rate, and that both CO{sub 2} and H{sub 2} weakly inhibit the reaction. Good stability of catalyst performance was found in 40-hr long tests. A flat (38 cm{sup 2}) Pd-Cu alloy membrane reactor was used with the catalyst washcoated on oxidized aluminum screens close coupled with the membrane. To achieve higher loadings, catalyst granules were layered on the membrane itself to test the combined HTS activity/ H{sub 2} -separation efficiency of the composite. Simulated coal gas mixtures were used and the effect of membrane on the conversion of CO over the catalyst was evidenced at high space velocities. Equilibrium CO conversion at 400 C was measured at a space velocity of 30,000 h{sup -1} with the 10{micro}m- thick Pd{sub 60}Cu{sub 40} membrane operating under a pressure differential of 100 psi. No carbon deposition took place during operation. The performance of the coupled Cu-ceria catalyst/membrane system at 400 C was stable in {approx} 30 h of continuous operation. The overall conclusion from this project is that Cu-doped ceria catalysts are suitable for use in high-temperature water-gas shift membrane reactors. CO{sub 2}-rich operation does not affect the catalyst activity or stability; neither does it affect hydrogen permeation through the Pd-Cu membrane. Operation in the temperature range of 400-430 C is recommended.

Maria Flytzani-Stephanopoulos; Xiaomei Qi; Scott Kronewitter

2004-02-01T23:59:59.000Z

442

Solubility trapping in formation water as dominant CO2 sink in natural gas fields  

E-Print Network [OSTI]

LETTERS Solubility trapping in formation water as dominant CO2 sink in natural gas fields Stuart M removal in nine natural gas fields in North America, China and Europe, using noble gas and carbon isotope tracers. The natural gas fields investigated in our study are dominated by a CO2 phase and provide

Haszeldine, Stuart

443

Gas exchange in terrestrial environments comes at the cost of evaporative water loss from respiratory surfaces.  

E-Print Network [OSTI]

3477 Gas exchange in terrestrial environments comes at the cost of evaporative water loss from of gas exchange, both within and among species (Lighton, 1998; Shelton and Appel, 2001; Chown, 2002). The classical pattern is that of discontinuous gas exchange, or discontinuous gas-exchange cycles (DGC; Lighton

Franz, Nico M.

444

Initiation of long, free-standing Z-discharges by CO2 laser gas heating  

SciTech Connect (OSTI)

High current discharge channels can neutralize both current and space charge of very intense ion beams. Therefore they are considered as an interesting alternative for the final focus and beam transport in a heavy ion beam fusion reactor. At the GSI accelerator facility, 50 cm long, stable, free-standing discharge channels with currents in excess of 40 kA in 2 to 25 mbar ammonia (NH{sub 3}) gas are investigated for heavy ion beam transport studies. The discharges are initiated by a CO{sub 2} laser pulse along the channel axis before the discharge is triggered. Resonant absorption of the laser, tuned to the {nu}{sub 2} vibration of the ammonia molecule, causes strong gas heating. Subsequent expansion and rarefaction of the gas prepare the conditions for a stable discharge to fulfill the requirements for ion beam transport. This paper describes the laser-gas interaction and the discharge initiation mechanism. We report on the channel stability and evolution, measured by fast shutter and streak imaging techniques. The rarefaction of the laser heated gas is studied by means of a hydrocode simulation.

Nieman, C.; Tauschwitz, A.; Penache, D.; Neff, S.; Knobloch, R.; Birkner, R.; Presura, R.; Hoffmann, D.H.H.; Yu, S.S.; Sharp, W.M.

2004-04-19T23:59:59.000Z

445

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

Broader source: Energy.gov [DOE]

This publication introduces consumers to solar heating technologies, and guides them through the basics of the technology and how to purchase it for the home.

446

Cost-efficient monitoring of water quality in district heating systems This article examines the monitoring strategy for water quality in a large Danish district  

E-Print Network [OSTI]

Cost-efficient monitoring of water quality in district heating systems This article examines the monitoring strategy for water quality in a large Danish district heating system ­ and makes a proposal for a technical and economic improvement. Monitoring of water quality in district heating systems is necessary

447

New Advances in Shale Gas Reservoir Analysis Using Water Flowback Data  

E-Print Network [OSTI]

Shale gas reservoirs with multistage hydraulic fractures are commonly characterized by analyzing long-term gas production data, but water flowback data is usually not included in the analysis. However, this work shows there can be benefits...

Alkouh, Ahmad

2014-04-04T23:59:59.000Z

448

Water alternating enriched gas injection to enhance oil production and recovery from San Francisco Field, Colombia.  

E-Print Network [OSTI]

??The main objectives of this study are to determine the most suitable type of gas for a water-alternating-gas (WAG) injection scheme, the WAG cycle time,… (more)

Rueda Silva, Carlos Fernando

2012-01-01T23:59:59.000Z

449

Xcel Energy (Gas)- Residential Conservation Programs  

Broader source: Energy.gov [DOE]

Xcel Energy offers its Wisconsin residential natural gas customers rebates for high efficiency heating equipment. Currently, rebates are available for tankless and storage water heaters, furnaces,...

450

Questar Gas- Commercial Energy Efficiency Rebate Program  

Broader source: Energy.gov [DOE]

Questar Gas provides rebates to its business customers for installing energy efficient food service equipment, laundry equipment, HVAC and water heating equipment, and certain weatherization...

451

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

E-Print Network [OSTI]

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

452

Water-saving liquid-gas conditioning system  

DOE Patents [OSTI]

A method for treating a process gas with a liquid comprises contacting a process gas with a hygroscopic working fluid in order to remove a constituent from the process gas. A system for treating a process gas with a liquid comprises a hygroscopic working fluid comprising a component adapted to absorb or react with a constituent of a process gas, and a liquid-gas contactor for contacting the working fluid and the process gas, wherein the constituent is removed from the process gas within the liquid-gas contactor.

Martin, Christopher; Zhuang, Ye

2014-01-14T23:59:59.000Z

453

Minimization of steam requirements and enhancement of water-gas shift reaction with warm gas temperature CO2 removal  

DOE Patents [OSTI]

The disclosure utilizes a hydroxide sorbent for humidification and CO.sub.2 removal from a gaseous stream comprised of CO and CO.sub.2 prior to entry into a water-gas-shift reactor, in order to decrease CO.sub.2 concentration and increase H.sub.2O concentration and shift the water-gas shift reaction toward the forward reaction products CO.sub.2 and H.sub.2. The hydroxide sorbent may be utilized for absorbtion of CO.sub.2 exiting the water-gas shift reactor, producing an enriched H.sub.2 stream. The disclosure further provides for regeneration of the hydroxide sorbent at temperature approximating water-gas shift conditions, and for utilizing H.sub.2O product liberated as a result of the CO.sub.2 absorption.

Siriwardane, Ranjani V; Fisher, II, James C

2013-12-31T23:59:59.000Z

454

Comparison of Palladium and Platinum Water Gas Shift Kinetics Using Density Functional Theory Models.  

E-Print Network [OSTI]

??The Water Gas Shift (WGS) reaction can be either thermodynamically or kinetically limited, depending on process conditions. Improved catalysts are of particular interest at low… (more)

Clay, John

2014-01-01T23:59:59.000Z

455

Comparison of palladium and platinum Water Gas Shift reaction kinetics using density functional theory models.  

E-Print Network [OSTI]

?? The Water Gas Shift (WGS) reaction can be either thermodynamically or kinetically limited, depending on process conditions. Improved catalysts are of particular interest at… (more)

Clay, John P.

2014-01-01T23:59:59.000Z

456

Water-Gas Samples At Long Valley Caldera Geothermal Area (Farrar...  

Open Energy Info (EERE)

Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Water-Gas Samples At Long Valley Caldera Geothermal Area (Farrar, Et Al., 2003) Exploration...

457

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

E-Print Network [OSTI]

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

Lekov, Alex B.

2010-01-01T23:59:59.000Z

458

WATER-GAS SHIFT WITH INTEGRATED HYDROGEN SEPARATION PROCESS  

SciTech Connect (OSTI)

Optimization of the water-gas shift (WGS) reaction system for hydrogen production for fuel cells is of particular interest to the energy industry. To this end, it is desirable to couple the WGS reaction to hydrogen separation using a semi-permeable membrane, with both processes carried out at high temperatures to improve reaction kinetics and permeation. Reduced equilibrium conversion of the WGS reaction at high temperatures is overcome by product H{sub 2} removal via the membrane. This project involves fundamental research and development of novel cerium oxide-based catalysts for the water-gas-shift reaction and the integration of these catalysts with Pd-alloy H{sub 2}-separation membranes supplying high purity hydrogen for fuel cell use. Conditions matching the requirements of coal gasifier-exit gas streams will be examined in the project. The first-year screening studies of WGS catalysts identified Cu-ceria as the most promising high-temperature shift catalyst for integration with H{sub 2}-selective membranes. Formulations containing iron oxide were found to deactivate in the presence of CO{sub 2}, and were thus eliminated from further consideration. Cu-containing ceria catalysts, on the other hand, showed high stability in CO{sub 2}-rich gases. This type gas will be present over much of the catalyst, as the membrane removes the hydrogen produced from the shift reaction. Several catalyst formulations were prepared, characterized and tested in the first year of study. Details from the catalyst development and testing work were given in our first annual technical report. Hydrogen permeation through Pd and Pd-alloy foils was investigated in a small membrane reactor constructed during the first year of the project. The effect of temperature on the hydrogen flux through pure Pd, Pd{sub 60}Cu{sub 40} and Pd{sub 75}Ag{sub 25} alloy membranes, each 25 {micro}m thick, was evaluated in the temperature range from 250 C to 500 C at upstream pressure of 4.4 atm and permeate hydrogen pressure of 1 atm. Flux decay was observed for the Pd-Cu membrane above 500 C. From 350-450 C, an average hydrogen flux value of 0.2 mol H{sub 2}/m{sup 2}/s was measured over this Pd-alloy membrane. These results are in good agreement with literature data. In this year's report, we discuss reaction rate measurements, optimization of catalyst kinetics by proper choice of dopant oxide (lanthana) in ceria, long-term stability studies, and H{sub 2} permeation data collected with unsupported flat, 10 {micro}m-thick Pd-Cu membranes over a wide temperature window and in various gas mixtures. The high-temperature shift catalyst composition was further improved, by proper selection of dopant type and amount. The formulation 10 at%Cu-Ce(30 at%La)Ox was the best; this was selected for further kinetic studies. WGS reaction rates were measured in a simulated coal-gas mixture. The stability of catalyst performance was examined in 40-hr long tests. A series of hydrogen permeation tests were conducted in a small flat-membrane reactor using the 10 m{micro}-thick Pd-Cu membranes. Small inhibitory effects of CO and CO{sub 2} were found at temperatures above 350 C, while H{sub 2}O vapor had no effect on hydrogen permeation. No carbon deposition took place during many hours of membrane operation. The reaction extent on the blank (catalyst-free) membrane was also negligible. A larger flat-membrane reactor will be used next year with the catalyst wash coated on screens close coupled with the Pd-Cu membrane.

Maria Flytzani-Stephanopoulos, PI; Jerry Meldon, Co-PI; Xiaomei Qi

2002-12-01T23:59:59.000Z

459

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

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

used for many years for space heating and cooling. It can be found in small and large products alike, such as window air conditioners used in homes through large rooftop units...

460

AN ASSESSMENT OF HEAT PUMP APPLICATION AT WATER TREATMENT FACILITIES-THAT USE SURFACE WATER.  

E-Print Network [OSTI]

??Energy-efficient heat pumps have been applied in the United States and other regions of the world for decades. Geothermal heat pumps have been used, but… (more)

YAN, WENPENG

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "gas water heating" 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

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

SciTech Connect (OSTI)

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

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

2012-01-01T23:59:59.000Z

462

Water management technologies used by Marcellus Shale Gas Producers.  

SciTech Connect (OSTI)

Natural gas represents an important energy source for the United States. According to the U.S. Department of Energy's (DOE's) Energy Information Administration (EIA), about 22% of the country's energy needs are provided by natural gas. Historically, natural gas was produced from conventional vertical wells drilled into porous hydrocarbon-containing formations. During the past decade, operators have increasingly looked to other unconventional sources of natural gas, such as coal bed methane, tight gas sands, and gas shales.

Veil, J. A.; Environmental Science Division

2010-07-30T23:59:59.000Z

463

Water distillation using waste engine heat from an internal combustion engine  

E-Print Network [OSTI]

To meet the needs of forward deployed soldiers and disaster relief personnel, a mobile water distillation system was designed and tested. This system uses waste engine heat from the exhaust flow of an internal combustion ...

Mears, Kevin S

2006-01-01T23:59:59.000Z

464

Progress Energy Florida- SunSense Solar Water Heating with EnergyWise  

Broader source: Energy.gov [DOE]

Progress Energy Florida (PEF) launched the ''Solar Water Heating with EnergyWise Program'' in February 2007 to encourage its residential customers to participate in its load control program and...

465

FirstEnergy (West Penn Power)- Residential Solar Water Heating Program (Pennsylvania)  

Broader source: Energy.gov [DOE]

West Penn Power, a First Energy utility, provides rebates to residential customers for purchasing and installing qualifying solar water heating systems. Eligible systems may receive a rebate of up...

466

Investigation of a Novel Solar Assisted Water Heating System with Enhanced Energy Yield for Buildings  

E-Print Network [OSTI]

This paper presented the concept, prototype application, operational performance and benefits relating to a novel solar assisted water heating system for building services. It was undertaken through dedicated theoretical analysis, computer...

Zhang, X.; Zhao, X.; Xu, J.; Yu, X.

2012-01-01T23:59:59.000Z

467

2014-02-21 Issuance: Test Procedure for Commercial Water Heating Equipment; Request for Information  

Broader source: Energy.gov [DOE]

This document is a pre-publication Federal Register request for information regarding test procedures for commercial water heating equipment, as issued by the Deputy Assistant Secretary for Energy Efficiency (February 21, 2014).

468

Nuclear reactor with makeup water assist from residual heat removal system  

DOE Patents [OSTI]

A pressurized water nuclear reactor uses its residual heat removal system to make up water in the reactor coolant circuit from an in-containment refueling water supply during staged depressurization leading up to passive emergency cooling by gravity feed from the refueling water storage tank, and flooding of the containment building. When depressurization commences due to inadvertence or a manageable leak, the residual heat removal system is activated manually and prevents flooding of the containment when such action is not necessary. Operation of the passive cooling system is not impaired. A high pressure makeup water storage tank is coupled to the reactor coolant circuit, holding makeup coolant at the operational pressure of the reactor. The staged depressurization system vents the coolant circuit to the containment, thus reducing the supply of makeup coolant. The level of makeup coolant can be sensed to trigger opening of successive depressurization conduits. The residual heat removal pumps move water from the refueling water storage tank into the coolant circuit as the coolant circuit is depressurized, preventing reaching the final depressurization stage unless the makeup coolant level continues to drop. The residual heat removal system can also be coupled in a loop with the refueling water supply tank, for an auxiliary heat removal path.

Corletti, Michael M. (New Kensington, PA); Schulz, Terry L. (Murrysville, PA)

1993-01-01T23:59:59.000Z

469

Nuclear reactor with makeup water assist from residual heat removal system  

DOE Patents [OSTI]

A pressurized water nuclear reactor uses its residual heat removal system to make up water in the reactor coolant circuit from an in-containment refueling water supply during staged depressurization leading up to passive emergency cooling by gravity feed from the refueling water storage tank, and flooding of the containment building. When depressurization commences due to inadvertence or a manageable leak, the residual heat removal system is activated manually and prevents flooding of the containment when such action is not necessary. Operation of the passive cooling system is not impaired. A high pressure makeup water storage tank is coupled to the reactor coolant circuit, holding makeup coolant at the operational pressure of the reactor. The staged depressurization system vents the coolant circuit to the containment, thus reducing the supply of makeup coolant. The level of makeup coolant can be sensed to trigger opening of successive depressurization conduits. The residual heat removal pumps move water from the refueling water storage tank into the coolant circuit as the coolant circuit is depressurized, preventing reaching the final depressurization stage unless the makeup coolant level continues to drop. The residual heat removal system can also be coupled in a loop with the refueling water supply tank, for an auxiliary heat removal path. 2 figures.

Corletti, M.M.; Schulz, T.L.

1993-12-07T23:59:59.000Z

470

Sustainable development through beneficial use of produced water for the oil and gas industry  

E-Print Network [OSTI]

Management and disposal of produced water is one of the most important problems associated with oil and gas (O&G) production. O&G production operations generate large volumes of brine water along with the petroleum resource. Currently, produced...

Siddiqui, Mustafa Ashique

2002-01-01T23:59:59.000Z

471

Peak Demand Reduction with Dual-Source Heat Pumps Using Municipal Water  

E-Print Network [OSTI]

The objective of this project was to examine a dual-source (air and/or water-coupled) heat pump concept which would reduce or eliminate the need for supplemental electrical resistance heating (strip heaters). The project examined two system options...

Morehouse, J. H.; Khan, J. A.; Connor, L. N.; Pal, D.

472

Heat as a tracer to determine streambed water exchanges Jim Constantz1  

E-Print Network [OSTI]

Heat as a tracer to determine streambed water exchanges Jim Constantz1 Received 13 March 2008 of heat as a tracer of shallow groundwater movement and describes current temperature-based approaches relying on traditional observation wells, and remote sensing and other large-scale advanced temperature

473

The effects of water and heat stress on protein synthesis in loblolly pine (Pinus taeda L.)  

E-Print Network [OSTI]

THE EFFECTS OF WATER AND HEAT STRESS ON PROTEIN SYNTHESIS IN LOBLOLLY PINE (PINUS TAEDA L. ) A Thesis CHRYS HULBERT Submitted to the Graduate College of Texas AAM University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE May 1987 Major Subjett: Plant Physiology THE EFFECTS OF WATER AND HEAT STRESS ON PROTEIN SYNTHESIS IN LOBLOLLY PINE (PINUS TAEDA L. ) A Thesis CHRYS HULBERT Approved as to style and content by: Ronald . Newton I (Co...

Hulbert, Chrys

1987-01-01T23:59:59.000Z

474

Heat-pipe gas-combustion system endurance test for Stirling engine. Final report, May 1990-September 1990  

SciTech Connect (OSTI)

Stirling Thermal Motors, Inc., (STM) has been developing a general purpose Heat Pipe Gas Combustion System (HPGC) suitable for use with the STM4-120 Stirling engine. The HPGC consists of a parallel plate recuperative preheater, a finned heat pipe evaporator and a film cooled gas combustor. A principal component of the HPGC is the heat pipe evaporator which collects and distributes the liquid sodium over the heat transfer surfaces. The liquid sodium evaporates and flows to the condensers where it delivers its latent heat. The report presents test results of endurance tests run on a Gas-Fired Stirling Engine (GFSE). Tests on a dynamometer test stand yielded 67 hours of engine operation at power levels over 10 kW (13.5 hp) with 26 hours at power levels above 15 kW (20 hp). Total testing of the engine, including both motoring tests and engine operation, yielded 245 hours of engine run time.

Mahrle, P.

1990-12-01T23:59:59.000Z

475

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

SciTech Connect (OSTI)

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

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

1980-07-01T23:59:59.000Z

476

The Gas-Cooled Fast Reactor: Report on Safety System Design for Decay Heat Removal  

SciTech Connect (OSTI)

The gas-cooled fast reactor (GFR) was chosen as one of the Generation IV nuclear reactor systems to be developed based on its excellent potential for sustainability through reduction of the volume and radiotoxicity of both its own fuel and other spent nuclear fuel, and for extending/utilizing uranium resources orders of magnitude beyond what the current open fuel cycle can realize. In addition, energy conversion at high thermal efficiency is possible with the current designs being considered, thus increasing the economic benefit of the GFR. However, research and development challenges include the ability to use passive decay heat removal systems during accident conditions, survivability of fuels and in-core materials under extreme temperatures and radiation, and economical and efficient fuel cycle processes. This report addresses/discusses the decay heat removal options available to the GFR, and the current solutions. While it is possible to design a GFR with complete passive safety (i.e., reliance solely on conductive and radiative heat transfer for decay heat removal), it has been shown that the low power density results in unacceptable fuel cycle costs for the GFR. However, increasing power density results in higher decay heat rates, and the attendant temperature increase in the fuel and core. Use of active movers, or blowers/fans, is possible during accident conditions, which only requires 3% of nominal flow to remove the decay heat. Unfortunately, this requires reliance on active systems. In order to incorporate passive systems, innovative designs have been studied, and a mix of passive and active systems appears to meet the requirements for decay heat removal during accident conditions.

K. D. Weaver; T. Marshall; T. Y. C. Wei; E. E. Feldman; M. J. Driscoll; H. Ludewig

2003-09-01T23:59:59.000Z

477

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.

478

Impacts of Shale Gas Wastewater Disposal on Water Quality in Western Pennsylvania  

E-Print Network [OSTI]

Impacts of Shale Gas Wastewater Disposal on Water Quality in Western Pennsylvania Nathaniel R. In Pennsylvania, oil and gas wastewater is sometimes treated at brine treatment facilities and discharged to local bioaccumulation in localized areas of shale gas wastewater disposal. INTRODUCTION The safe disposal of large

Jackson, Robert B.

479

Water alternating enriched gas injection to enhance oil production and recovery from San Francisco Field, Colombia  

E-Print Network [OSTI]

The main objectives of this study are to determine the most suitable type of gas for a water-alternating-gas (WAG) injection scheme, the WAG cycle time, and gas injection rate to increase oil production rate and recovery from the San Francisco field...

Rueda Silva, Carlos Fernando

2012-06-07T23:59:59.000Z

480

AGGLOMERATION OF GAS HYDRATE IN A WATER-IN-OIL EMULSION: EXPERIMENTAL AND MODELING STUDIES  

E-Print Network [OSTI]

AGGLOMERATION OF GAS HYDRATE IN A WATER-IN-OIL EMULSION: EXPERIMENTAL AND MODELING STUDIES Ana of gas hydrates in water-in-oil emulsion is investigated at the laboratory pilot scale on a flow loop, rheology, chord length distribution, modeling Corresponding author: Phone: +33 477420286 Fax +33 477429694

Paris-Sud XI, Université de

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481

THEORY OF THREE-PHASE FLOW APPLIED TO WATER-ALTERNATING-GAS ENHANCED OIL RECOVERY  

E-Print Network [OSTI]

is the key to this improvement. 1. Introduction In secondary oil recovery, water or gas is injectedTHEORY OF THREE-PHASE FLOW APPLIED TO WATER-ALTERNATING-GAS ENHANCED OIL RECOVERY D. MARCHESIN, we show that this theory can be applied to increase the rate of oil recovery, during certain

482

Side-by-Side Testing of Water Heating Systems: Results from the 2009-2010 Evaluation  

Broader source: Energy.gov [DOE]

The performance of seven differing types of residential water heating systems was compared in a side-by-side test configuration over a full year period. The Hot Water System Laboratory (HWS Lab) test facility at the Florida Solar Energy Center (FSEC) in Cocoa, FL was used for the tests.

483

CONDENSATION As noted previously, heat energy imparted to water as it  

E-Print Network [OSTI]

CONDENSATION As noted previously, heat energy imparted to water as it evaporates is returned to liquid water as vapor condenses. During low tide, the rate of evaporation typically exceeds the rate of condensation, and it is this net rate of evapora- tion that we notice. At times, however, the rate of conden

Brody, James P.

484

MEASUREMENT OF HEAT TRANSFER DURING DROP-WISE CONDENSATION OF WATER ON POLYETHYLENE  

E-Print Network [OSTI]

MEASUREMENT OF HEAT TRANSFER DURING DROP-WISE CONDENSATION OF WATER ON POLYETHYLENE Gagan Deep distribution of temperature during drop-wise condensation over a polyethylene substrate was measured using on the substrate was simultaneously visualized. Static contact angles of water on polyethylene are measured

Khandekar, Sameer

485

The development of a solar thermal water purification, heating, and power generation system: A case study.  

E-Print Network [OSTI]

The development of a solar thermal water purification, heating, and power generation system: A case, none of the existing concentrated solar power systems (trough, dish, and tower) that have been the potential of an invention directed to a water purification system that also recovers power from generated

Wu, Mingshen

486

Cooling rate, heating rate, and aging effects in glassy water Nicolas Giovambattista,1  

E-Print Network [OSTI]

be glassified by cooling using hyper- quenching techniques (i.e., with rates of the order of 105 K/s [8Cooling rate, heating rate, and aging effects in glassy water Nicolas Giovambattista,1 H. Eugene of water molecules during the process of generating a glass by cooling, and during the process

Sciortino, Francesco

487

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

488

PERFORMANCE IMPROVEMENTS IN COMMERCIAL HEAT PUMP WATER HEATERS USING CARBON DIOXIDE  

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 (180�ºF), as required by sanitary codes in the U.S.(Food Code, 2005), in a single pass, temperatures that are much more difficult to reach with other refrigerants. This can be especially attractive in applications where this water is used for the purpose of sanitation. While reliability has also been of concern historically, dramatic improvements have been made over the last several years through research done in the automotive industry and commercialization of R744 technology in residential water heating mainly in Japan. This paper presents the performance results from the development of an R744 commercial heat pump water heater of approximately 35kW and a comparison to a baseline R134a unit of the same capacity and footprint. In addition, recommendations are made for further improvements of the R744 system which could result in possible energy savings of up to 20%.

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

2011-07-01T23:59:59.000Z

489

Production-management techniques for water-drive gas reservoirs. Annual Report, August 1990-December 1991  

SciTech Connect (OSTI)

The project was designed to investigate production management strategies through a field study approach. The initial task was to prepare a summary of industry experience with water-drive gas and water-drive gas storage reservoirs. This activity was necessary to define the variety of reservoir situations in which water influx occurs, to identify those cases where alternative production practices will increase ultimate recovery, and to develop techniques to better characterize these reservoirs for further analysis. Four fields were selected for study: 1 onshore Gulf Coast gas reservoir, 2 offshore Gulf Coast reservoirs, and 1 mid-continent aquifier gas storage field. A modified material balance technique was developed and validated which predicts the pressure and production performance of water-drive gas reservoirs. This method yields more accurate results than conventional water influx techniques.

Hower, T.L.; Abbott, W.A.; Arsenault, J.W.; Jones, R.E.

1992-01-01T23:59:59.000Z

490

LOx breathing system with gas permeable-liquid impermeable heat exchange and delivery hose  

DOE Patents [OSTI]

Life support apparatus is composed of: a garment for completely enclosing a wearer and constructed for preventing passage of gas from the environment surrounding the garment; a portable receptacle holding a quantity of an oxygen-containing fluid in liquid state, the fluid being in a breathable gaseous state when at standard temperature and pressure; a fluid flow member secured within the garment and coupled to the receptacle for conducting the fluid in liquid state from the receptacle to the interior of the garment; and a fluid flow control device connected for causing fluid to flow from the receptacle to the fluid flow member at a rate determined by the breathable air requirement of the wearer, wherein fluid in liquid state is conducted into the interior of the garment at a rate to be vaporized and heated to a breathable temperature by body heat produced by the wearer. 6 figs.

Hall, M.N.

1996-04-30T23:59:59.000Z

491

Lox breathing system with gas permeable-liquid impermeable heat exchange and delivery hose  

DOE Patents [OSTI]

Life support apparatus composed of: a garment (2): for completely enclosing a wearer and constructed for preventing passage of gas from the environment surrounding the garment (2); a portable receptacle (6) holding a quantity of an oxygen-containing fluid in liquid state, the fluid being in a breathable gaseous; state when at standard temperature and pressure; a fluid flow member (16) secured within the garment (2) and coupled to the receptacle (6) for conducting the fluid in liquid state from the receptacle (6) to the interior of the garment (2); and a fluid flow control device (14) connected for causing fluid to flow from the receptacle (6) to the fluid flow member (16) at a rate determined by the breathable air requirement of the wearer, wherein fluid in liquid state is conducted into the interior of the garment (2) at a rate to be vaporized and heated to a breathable temperature by body heat produced by the wearer.

Hall, Mark N. (Richland, WA)

1996-01-01T23:59:59.000Z

492

Heat removal from high temperature tubular solid oxide fuel cells utilizing product gas from coal gasifiers.  

SciTech Connect (OSTI)

In this work we describe the results of a computer study used to investigate the practicality of several heat exchanger configurations that could be used to extract heat from tubular solid oxide fuel cells (SOFCs) . Two SOFC feed gas compositions were used in this study. They represent product gases from two different coal gasifier designs from the Zero Emission Coal study at Los Alamos National Laboratory . Both plant designs rely on the efficient use of the heat produced by the SOFCs . Both feed streams are relatively rich in hydrogen with a very small hydrocarbon content . One feed stream has a significant carbon monoxide content with a bit less hydrogen . Since neither stream has a significant hydrocarbon content, the common use of the endothermic reforming reaction to reduce the process heat is not possible for these feed streams . The process, the method, the computer code, and the results are presented as well as a discussion of the pros and cons of each configuration for each process .

Parkinson, W. J. (William Jerry),

2003-01-01T23:59:59.000Z

493

Local heat flux and energy loss in a 2D vibrated granular gas  

E-Print Network [OSTI]

We performed event-driven simulations of a two-dimensional granular gas between two vibrating walls and directly measured the local heat flux and energy dissipation rate in the stationary state. Describing the local heat flux as a function of the coordinate x in the direction perpendicular to the driving walls, we use a generalization of Fourier's law, q_x(x) = kappa d_x T(x) + mu d_x rho(x), to relate the local heat flux to the local gradients of the temperature and density. This ansatz accounts for the fact that density gradients also generate heat flux, not only temperature gradients. The transport coefficients kappa and mu are assumed to be independent of x, and we check the validity of this assumption in the simulations. Both kappa and mu are determined for different system parameters, in particular, for a wide range of coefficients of restitution. We also compare our numerical results to existing hydrodynamic theories. Agreement is found for kappa for very small inelasticities only. Beyond this region, kappa and mu exhibit a striking non-monotonic behavior.

Olaf Herbst; Peter Müller; Annette Zippelius

2004-12-13T23:59:59.000Z

494

Lumbee River EMC- Solar Water Heating Loan Program (North Carolina)  

Broader source: Energy.gov [DOE]

Lumbee River EMC is offering 1.50% loans to residential customers for the installation of solar water heaters on their homes. To qualify, the systems must be certified OG-300 by the Solar Ratings...

495

Lumbee River EMC- Solar Water Heating Rebate Program (North Carolina)  

Broader source: Energy.gov [DOE]

Lumbee River EMC is offering $850 rebates to residential customers who install solar water heaters on their homes. To qualify, the systems must be certified OG-300 by the Solar Ratings and...

496

Entergy New Orleans- Residential Solar Water Heating Program (Louisiana)  

Broader source: Energy.gov [DOE]

Entergy New Orleans offers a Solar Water Heater Rebate pilot program designed to help residential customers make energy efficiency improvements. Rebates will be offered on a first-come, first...

497

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

Open Energy Info (EERE)

development of high-quality and attractive-looking model designs for integrating solar water heaters (SWH) into buildings in China. Coordinates: 39.90601, 116.387909 Show...

498

Solar space and water heating system installed at Charlottesville, Virginia  

SciTech Connect (OSTI)

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

Greer, Charles R.

1980-09-01T23:59:59.000Z

499

KEY DESIGN REQUIREMENTS FOR THE HIGH TEMPERATURE GAS-COOLED REACTOR NUCLEAR HEAT SUPPLY SYSTEM  

SciTech Connect (OSTI)

Key requirements that affect the design of the high temperature gas-cooled reactor nuclear heat supply system (HTGR-NHSS) as the NGNP Project progresses through the design, licensing, construction and testing of the first of a kind HTGR based plant are summarized. These requirements derive from pre-conceptual design development completed to-date by HTGR Suppliers, collaboration with potential end users of the HTGR technology to identify energy needs, evaluation of integration of the HTGR technology with industrial processes and recommendations of the NGNP Project Senior Advisory Group.

L.E. Demick

2010-09-01T23:59:59.000Z

500

Heating the bubbly gas of galaxy clusters with weak shocks and sound waves  

E-Print Network [OSTI]

Using hydrodynamic simulations and a technique to extract the rotational component of the velocity field, we show how bubbles of relativistic gas inflated by AGN jets in galaxy clusters act as a catalyst, transforming the energy carried by sound and shock waves to heat. The energy is stored in a vortex field around the bubbles which can subsequently be dissipated. The efficiency of this process is set mainly by the fraction of the cluster volume filled by (sub-)kpc scale filaments and bubbles of relativistic plasma.

S. Heinz; E. Churazov

2005-09-26T23:59:59.000Z