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Note: This page contains sample records for the topic "agricultural water pumping" 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

Directly coupled solar thermal water pumping concepts for agriculture. Final report, October 1978-May 1979  

DOE Green Energy (OSTI)

The directly coupled solar thermal water pumping system has been analyzed for both performance and cost. Performance estimates for a real operating system exceed 8% for the typical environmental conditions expected. The cost of such a system, using currently available flat-panel collectors, is highly competitive with alternative, remote location, water pumping systems. Although the system has a fairly low relative cost, there are areas such as valve and actuator cost that have a high potential for reducing system cost, especially for smaller systems. The performance of the system can be improved by high-performance, moderate-temperature collectors such as evacuated glass tubes. The advantages of the directly coupled solar thermal system are simplicity and limited failure modes. Results of the experimental phase indicate that the analytic models provide an accurate estimate of achievable system performance.

Scharlack, R S

1979-01-01T23:59:59.000Z

2

Water displacement mercury pump  

DOE Patents (OSTI)

A water displacement mercury pump has a fluid inlet conduit and diffuser, a valve, a pressure cannister, and a fluid outlet conduit. The valve has a valve head which seats in an opening in the cannister. The entire assembly is readily insertable into a process vessel which produces mercury as a product. As the mercury settles, it flows into the opening in the cannister displacing lighter material. When the valve is in a closed position, the pressure cannister is sealed except for the fluid inlet conduit and the fluid outlet conduit. Introduction of a lighter fluid into the cannister will act to displace a heavier fluid from the cannister via the fluid outlet conduit. The entire pump assembly penetrates only a top wall of the process vessel, and not the sides or the bottom wall of the process vessel. This insures a leak-proof environment and is especially suitable for processing of hazardous materials.

Nielsen, Marshall G. (Woodside, CA)

1985-01-01T23:59:59.000Z

3

Water displacement mercury pump  

DOE Patents (OSTI)

A water displacement mercury pump has a fluid inlet conduit and diffuser, a valve, a pressure cannister, and a fluid outlet conduit. The valve has a valve head which seats in an opening in the cannister. The entire assembly is readily insertable into a process vessel which produces mercury as a product. As the mercury settles, it flows into the opening in the cannister displacing lighter material. When the valve is in a closed position, the pressure cannister is sealed except for the fluid inlet conduit and the fluid outlet conduit. Introduction of a lighter fluid into the cannister will act to displace a heavier fluid from the cannister via the fluid outlet conduit. The entire pump assembly penetrates only a top wall of the process vessel, and not the sides or the bottom wall of the process vessel. This insures a leak-proof environment and is especially suitable for processing of hazardous materials.

Nielsen, M.G.

1984-04-20T23:59:59.000Z

4

Absorption Heat Pump Water Heater  

NLE Websites -- All DOE Office Websites (Extended Search)

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

5

Absorption Heat Pump Water Heater  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

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

6

CRBR pump water test experience  

Science Conference Proceedings (OSTI)

The hydraulic design features and water testing of the hydraulic scale model and prototype pump of the sodium pumps used in the primary and intermediate sodium loops of the Clinch River Breeder Reactor Plant (CRBRP) are described. The Hydraulic Scale Model tests are performed and the results of these tests are discussed. The Prototype Pump tests are performed and the results of these tests are discussed.

Cook, M.E.; Huber, K.A.

1983-01-01T23:59:59.000Z

7

Heat Pump Water Heaters | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Water Heaters Water Heaters Heat Pump Water Heaters May 4, 2012 - 5:21pm Addthis A diagram of a heat pump water heater. A diagram of a heat pump water heater. What does this mean for me? Heat pump water heaters can be two to three times more energy efficient than conventional electric storage water heaters. Heat pump water heaters work in locations that remain in the 40º-90ºF range year-round. Most homeowners who have heat pumps use them to heat and cool their homes. But a heat pump also can be used to heat water -- either as stand-alone water heating system, or as combination water heating and space conditioning system. How They Work Heat pump water heaters use electricity to move heat from one place to another instead of generating heat directly. Therefore, they can be two to

8

Heat Pump Water Heaters | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Water Heaters Heat Pump Water Heaters August 19, 2013 - 2:59pm Addthis Illustration of a heat pump water heater, which looks like a tall cylinder with a small chamber on top and a...

9

Energy Saving Absorption Heat Pump Water Heater  

energy savings and can reduce the use of fossil fuels by buildings. While conventional heat pump water heater designs are limited to using toxic ammonia water ...

10

Using Renewable Energy to Pump Water  

E-Print Network (OSTI)

Solar and wind power can be economical and environmentally friendly ways to pump water for homes, irrigation and/or livestock water wells. This publication explains how these pumps work, the advantages and disadvantages of using renewable energy sources, and methods to calculate your pumping requirements.

Mecke, Michael; Enciso, Juan

2007-06-08T23:59:59.000Z

11

Field Monitoring Protocol: Heat Pump Water Heaters  

NLE Websites -- All DOE Office Websites (Extended Search)

Field Monitoring Protocol: Heat Pump Water Heaters B. Sparn, L. Earle, D. Christensen, J. Maguire, and E. Wilson National Renewable Energy Laboratory C.E. Hancock Mountain Energy...

12

Heat Pump Water HeatersLaboratory Tests  

Science Conference Proceedings (OSTI)

EPRI conducted laboratory tests of several heat pump water heaters to assess their performance and energy efficiency. Among U.S. heat pump water heaters tested were new products from A. O. Smith, General Electric (GE), and Rheem. These units are designed to be integral, drop-in replacements for standard electric water heaters. Additionally, EPRI tested the Japanese-based Eco-cute heat pump water heater from Daikin, which is a split unit with an outdoor heat pump using CO2 as the refrigerant and an indoor...

2009-12-11T23:59:59.000Z

13

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

E-Print Network (OSTI)

2001. Residential Heat Pump Water Heater (HPWH) DevelopmentKelso, J. 2003. Incorporating Water Heater Replacement into2005. Residential Heat Pump Water Heaters: Energy Efficiency

Franco, Victor

2011-01-01T23:59:59.000Z

14

Heat Pump Water Heaters Demonstration Project  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

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

15

Ag & Water Pump | OpenEI  

Open Energy Info (EERE)

Ag & Water Pump Ag & Water Pump Dataset Summary Description Natural gas consumption data from the California Energy Commission by planning area for Commercial, Residential, Ag & Water Pump, Streetlight, Industry, Mining & Construction and Total Usage. Source California Energy Commission Date Released Unknown Date Updated Unknown Keywords Ag & Water Pump annual energy consumption Commercial Energy Consumption Industry Residential Streetlight Data text/csv icon Natural Gas Consumption by Planning Area (csv, 12.6 KiB) Quality Metrics Level of Review Some Review Comment Temporal and Spatial Coverage Frequency Time Period 1990-2009 License License Other or unspecified, see optional comment below Comment http://www.energy.ca.gov/conditions.html Rate this dataset Usefulness of the metadata

16

Heat Pump Water Heaters for Commercial Buildings  

Science Conference Proceedings (OSTI)

This technical update from the Electric Power Research Institute (EPRI) reviews the technology of heat pump water heaters (HPWHs) for commercial building applications. The report discusses the technical and conceptual background of heat pump water heaters, laboratory testing as performed at EPRI's laboratory, and implications of the test results. It provides analysis of the climactic applicability, financial scenarios, the air-cooling benefit or detriment of HPWH technology.

2011-12-22T23:59:59.000Z

17

Energy and Water Use in Irrigated Agriculture During Drought Conditions  

E-Print Network (OSTI)

ENERGY/WATER USE DURING A DROUGHT YEAR (1977) Water Supply & Demand in 1977 California's agricultural industry

Ritschard, R.L.

2011-01-01T23:59:59.000Z

18

Energy and Water Use in Irrigated Agriculture During Drought Conditions  

E-Print Network (OSTI)

and Beneficial Use in Water Conservation Policy PricingNovember 1976. Water Conservation in Cali- 10. CaliforniaService, Agricultural Water Conservation Conference -

Ritschard, R.L.

2011-01-01T23:59:59.000Z

19

Climate policy implications for agricultural water demand  

SciTech Connect

Energy, water and land are scarce resources, critical to humans. Developments in each affect the availability and cost of the others, and consequently human prosperity. Measures to limit greenhouse gas concentrations will inevitably exact dramatic changes on energy and land systems and in turn alter the character, magnitude and geographic distribution of human claims on water resources. We employ the Global Change Assessment Model (GCAM), an integrated assessment model to explore the interactions of energy, land and water systems in the context of alternative policies to limit climate change to three alternative levels: 2.5 Wm-2 (445 ppm CO2-e), 3.5 Wm-2 (535 ppm CO2-e) and 4.5 Wm-2 (645 ppm CO2-e). We explore the effects of two alternative land-use emissions mitigation policy optionsone which taxes terrestrial carbon emissions equally with fossil fuel and industrial emissions, and an alternative which only taxes fossil fuel and industrial emissions but places no penalty on land-use change emissions. We find that increasing populations and economic growth could be anticipated to almost triple demand for water for agricultural systems across the century even in the absence of climate policy. In general policies to mitigate climate change increase agricultural demands for water still further, though the largest changes occur in the second half of the century, under both policy regimes. The two policies examined profoundly affected both the sources and magnitudes of the increase in irrigation water demands. The largest increases in agricultural irrigation water demand occurred in scenarios where only fossil fuel emissions were priced (but not land-use change emission) and were primarily driven by rapid expansion in bioenergy production. In these scenarios water demands were large relative to present-day total available water, calling into question whether it would be physically possible to produce the associated biomass energy. We explored the potential of improved water delivery and irrigation system efficiencies. These could potentially reduce demands substantially. However, overall demands remained high under our fossil-fuel-only tax policy. In contrast, when all carbon was priced, increases in agricultural water demands were smaller than under the fossil-fuel-only policy and were driven primarily by increased demands for water by non-biomass crops such as rice. Finally we estimate the geospatial pattern of water demands and find that regions such as China, India and other countries in south and east Asia might be expected to experience greatest increases in water demands.?

Chaturvedi, Vaibhav; Hejazi, Mohamad I.; Edmonds, James A.; Clarke, Leon E.; Kyle, G. Page; Davies, Evan; Wise, Marshall A.; Calvin, Katherine V.

2013-03-28T23:59:59.000Z

20

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

SciTech Connect

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

Note: This page contains sample records for the topic "agricultural water pumping" 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

Heat pump water heaters. Final report  

SciTech Connect

A survey of the eleven manufacturers of heat pump water heaters (HPWHs) in the United States is presented. Product characteristics and application guidelines, including economic comparisons to other means of water heating, are summarized. A survey of forty-five utilities, identified as having conducted field tests of HPWHs, is also presented. Based on the experiences of these utilities, experimental designs, instrumentation schemes, and data reduction methods are recommended. A brief assessment of utility load profile impacts illustrates that HPWHs can provide peak load reductions compared to electric resistance water heaters. Specific recommendations are made for further research and development of HPWHs.

Dobyns, J.E.; Blatt, M.H.

1984-05-01T23:59:59.000Z

22

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

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

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

23

Field Monitoring Protocol: Heat Pump Water Heaters  

SciTech Connect

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

24

FS: heat pump water heaters | The Better Buildings Alliance  

NLE Websites -- All DOE Office Websites (Extended Search)

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

25

Geothermal hot water pump. Final report  

DOE Green Energy (OSTI)

The design, testing and performance capabilities of a Geothermal Hot Water Pumping System being developed are described. The pumping system is intended to operate submerged in geothermal brine wells for extended periods of time. Such a system confines the hot brine in a closed-loop under pressure to prevent the liquid from flashing into steam, in addition to providing a means for reinjecting cooled water and the contaminants into a return well. The system consists of a single-stage centrifugal pump driven by an oil-cooled, high-speed electric motor with integral heat exchanger. For testing purposes a diesel engine driven 400 Hz generator is used for supplying power to the motor. In some areas where commercial power may not be available, the diesel-generator unit or either a rotating or solid state frequency converter may be used to produce the high frequency power required by the motor. Fabrication of a prototype system and testing of the electric motor at frequencies up to 250 Hz was completed. While testing at 275 Hz it was necessary to terminate the testing when the motor stator was damaged as a result of a mechanical failure involving the motor-dynamometer drive adaptor. Test results, although limited, confirm the design and indicate that the performance is as good, or better than predicted. These results also indicate that the motor is capable of achieving rated performance.

Not Available

1977-09-30T23:59:59.000Z

26

Geothermal hot water pump. Final report  

SciTech Connect

The design, testing and performance capabilities of a Geothermal Hot Water Pumping System are described. The pumping system is intended to operate submerged in geothermal brine wells for extended periods of time. Such a system confines the hot brine in a closed-loop under pressure to prevent the liquid from flashing into steam, in addition to providing a means for reinjecting cooled water and the contaminates into a return well. The system consists of a single-stage centrifugal pump driven by an oil-cooled, high-speed electric motor with integral heat exchanger. For testing purposes a diesel engine driven 400 Hz generator is used for supplying power to the motor. In some areas where commercial power may not be available, the diesel-generator unit or either a rotating or solid state frequency converter may be used to produce the high frequency power required by the motor. Fabrication of a prototype system and testing of the electric motor at frequencies up to 250 Hz was completed. While testing at 275 Hz it was necessary to terminate the testing when the motor stator was damaged as a result of a mechanical failure involving the motor-dynamometer drive adaptor.

1977-09-30T23:59:59.000Z

27

LOW COST HEAT PUMP WATER HEATER (HPWH)  

Science Conference Proceedings (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

28

MHK Technologies/Wave Water Pump WWP | Open Energy Information  

Open Energy Info (EERE)

Pump WWP Pump WWP < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Wave Water Pump WWP.gif Technology Profile Primary Organization Renewable Energy Wave Pumps Technology Resource Click here Wave Technology Description The Water Wave Pump WWP is a point absorber that uses a submerged water pump to lift a small quantity of water to a higher head collect it in a piping network and feed it to a hydro turbine to produce power Mooring Configuration Gravity base installed at the sea bed Optimum Marine/Riverline Conditions The REWP can pump water to a hgih head fro waves ranging between 1 2 meters to waves in excess of 4 meters high It self adjusts to varyilng sea levels and wave hights It resists storms safe to navigation as red floats are clearly seen during the day and red flashing lights during the night It does not disturb marine life or shore line scenic view

29

Carbon Dioxide Heat Pump Water Heater Research Project | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

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

30

Heat Pump Water Heater Performance in  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

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

31

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 technology for a compressor HPWH are separately summarized. A new study on frosting/defrosting of an air source heat pump water heater (ASHPWH) is also discussed. The trends of some new technologies of HPWH are analyzed.

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

2006-01-01T23:59:59.000Z

32

Water-Loop Heat Pump Systems: Assessment Study Update  

Science Conference Proceedings (OSTI)

Water-loop heat pump systems, composed of multiple water-source heat pumps, a boiler, and a cooling tower operating in a closed water loop are a key segment of the commercial building heat pump market. This type of system provides a low-first-cost, versatile, and energy-efficient approach to space conditioning commercial buildings that have simultaneous heating and cooling loads.

1991-10-25T23:59:59.000Z

33

Available Technologies: Heat-powered Water Pump and Purifier  

Berkeley Lab engineer Leif Steinhour has developed a heat-powered pump that purifies water while moving the fluid. The technology requires no moving ...

34

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

SciTech Connect

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

35

Energy Saving Absorption Heat Pump Water Heater - Energy ...  

ORNLs new absorption heat pump and water heater technology offers substantial energy savings and can reduce the use of fossil fuels by buildings. While ...

36

Consolidated Electric Cooperative- Heat Pump and Water Heating Rebates  

Energy.gov (U.S. Department of Energy (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...

37

Carbon Dioxide-Based Heat Pump Water Heater Research Project  

Energy.gov (U.S. Department of Energy (DOE))

The U.S. Department of Energy is currently conducting research into carbon dioxide (CO2) heat pump water heaters. This project will employ innovative techniques to adapt water heating technology to...

38

Multifamily Heat Pump Water Heater Evaluation  

SciTech Connect

Although heat pump water heaters (HPWHs) have gained significant attention in recent years as a high efficiency electric water heating solution for single family homes, central HPWHs for commercial or multi-family applications are not as well documented in terms of measured performance and cost effectiveness. To evaluate this technology, the Alliance for Residential Building Innovation team monitored the performance of a 10.5 ton central HPWH installed on a student apartment building at the West Village Zero Net Energy Community in Davis, California. Monitoring data collected over a 16 month period were then used to validate a TRNSYS simulation model. The TRNSYS model was then used to project performance in different climates using local electric rates. Results of the study indicate that after some initial commissioning issues, the HPWH operated reliably with an annual average efficiency of 2.12 (Coefficient of Performance). The observed efficiency was lower than the unit's rated efficiency, primarily due to the fact that the system rarely operated under steady-state conditions. Changes in the system configuration, storage tank sizing, and control settings would likely improve the observed field efficiency. Modeling results suggest significant energy savings relative to electric storage water heating systems (typical annual efficiencies around 0.90) providing for typical simple paybacks of six to ten years without any incentives. The economics versus gas water heating are currently much more challenging given the current low natural gas prices in much of the country. Increased market size for this technology would benefit cost effectiveness and spur greater technology innovation.

Hoeschele, M.; Weitzel, E.

2013-11-01T23:59:59.000Z

39

MHK Technologies/Water Air Pump WAP | Open Energy Information  

Open Energy Info (EERE)

Pump WAP Pump WAP < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Water Air Pump WAP.jpg Technology Profile Primary Organization Shamil Ayntrazi Technology Resource Click here Wave Technology Type Click here Point Absorber - Submerged Technology Readiness Level Click here TRL 5 6 System Integration and Technology Laboratory Demonstration Technology Description The Water Air Pump WAP uses a partially submerged funnel shaped air pump to compress air collect it in a piping network and feed it to an air turbine Mooring Configuration Gravity base installed at the sea bed Technology Dimensions Device Testing Date Submitted 11:50.0 << Return to the MHK database homepage Retrieved from "http://en.openei.org/w/index.php?title=MHK_Technologies/Water_Air_Pump_WAP&oldid=681697"

40

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

E-Print Network (OSTI)

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

Weerawoot, Arunwattana

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "agricultural water pumping" 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

PUMPS  

DOE Patents (OSTI)

A pump is described for conveving liquids, particure it is not advisable he apparatus. The to be submerged in the liquid to be pumped, a conduit extending from the high-velocity nozzle of the injector,and means for applying a pulsating prcesure to the surface of the liquid in the conduit, whereby the surface oscillates between positions in the conduit. During the positive half- cycle of an applied pulse liquid is forced through the high velocity nozzle or jet of the injector and operates in the manner of the well known water injector and pumps liquid from the main intake to the outlet of the injector. During the negative half-cycle of the pulse liquid flows in reverse through the jet but no reverse pumping action takes place.

Thornton, J.D.

1959-03-24T23:59:59.000Z

42

Apparatus and method for controlling a heat pump water heater  

Science Conference Proceedings (OSTI)

A method and apparatus for controlling the operation of an add-on heat pump water heater unit is disclosed. A combination of a thermally conductive tube having a flattened portion and a thermostat mounted thereto is utilized to sense the temperature level of water in a tank to which the heater unit is connected. The tube and thermostat are additionally insulated from the ambient. A circulating pump is provided and connected to the water thermostat such that the pump is energized only when it is necessary to operate the heat energy adding unit.

Whitwell, R. J.; Schafer, J. P.

1984-01-08T23:59:59.000Z

43

Energy Basics: Heat Pump Water Heaters  

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

for optimum operation in either summer or winter. Homeowners primarily install geothermal heat pumps-which draw heat from the ground during the winter and from the indoor air...

44

Laboratory Performance Evaluation of Residential Integrated Heat Pump Water Heaters  

SciTech Connect

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

45

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 to a water heating load. The tests, conducted for Georgia Power Company, examined both quantitative and qualitative aspects of the heat pumps and the overall water heating systems. The results provide valuable insight into the actual operating characteristics of heat pump water heaters and useful guidelines for system design and operation. The capacity and efficiency of the units agreed with manufacturers' specifications. COP values ranged from 2 .6 to 3.0 for water heating only, and from 4.1 to 5.0 when space cooling benefit was included. It was concluded that heat pump water heaters can provide economical water heating and space conditioning. However, application sites must be selected within certain constraints and a minimum level of operating control and maintenance must be observed.

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

1987-01-01T23:59:59.000Z

46

Heat Pump Water Heating Modeling in EnergyPlus  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Heat Pump Water Heater Modeling Heat Pump Water Heater Modeling in EnergyPlus Building America Residential Energy Efficiency Stakeholder Meeting Eric Wilson Craig Christensen March 1, 2012 2 Modeling Issues Results Motivation Heat Pump Water Heater Modeling... 3 Gap: Existing analysis tools cannot accurately model HPWHs with reasonable runtime. 4 What have we achieved so far? Laboratory Evaluations 14 x Field Monitoring 5 Closing the Gap Laboratory Evaluations 6 sec timestep hourly timestep 14 x Field Monitoring CARB 6 Why is modeling important? * Performance varies: Can't just use EF * System interaction o HPWH affects building heating and cooling o Space conditions affect HPWH performance 7 Modeling Goals * Manage Risks o Accuracy o Run time o Occupant satisfaction * Flexibility to explore the effects of:

47

A NORMETEX MODEL 15 M3/HR WATER VAPOR PUMPING TEST  

SciTech Connect

Tests were performed using a Model 15 m{sup 3}/hr Normetex vacuum pump to determine if pump performance degraded after pumping a humid gas stream. An air feed stream containing 30% water vapor was introduced into the pump for 365 hours with the outlet pressure of the pump near the condensation conditions of the water. Performance of the pump was tested before and after the water vapor pumping test and indicated no loss in performance of the pump. The pump also appeared to tolerate small amounts of condensed water of short duration without increased noise, vibration, or other adverse indications. The Normetex pump was backed by a dual-head diaphragm pump which was affected by the condensation of water and produced some drift in operating conditions during the test.

Klein, J.; Fowley, M.; Steeper, T.

2010-12-20T23:59:59.000Z

48

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

49

Water-Loop Heat Pump Systems: Volumes 1 and 2  

Science Conference Proceedings (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.

1993-04-01T23:59:59.000Z

50

Optimal Operation of Large Agricultural Watersheds with Water Quality Restraints  

E-Print Network (OSTI)

Improved technology is needed for use in properly managing large agricultural watersheds. Proper watershed management means selecting land uses that are appropriate for each subarea, using erosion control measures where necessary, and applying fertilizers at rates that maximize agricultural production without polluting the environment. Watershed runoff and industrial and municipal effluents pollute streams and reservoirs. Point source pollution (industries and municipalities) can be monitored. Nonpoint-source pollution (watersheds) is widely dispersed and not easily measured. Mathematical models are needed to predict nonpoint-source pollution as affected by watershed characteristics, land use, conservation practices, chemical fertilizers, and climatic variables. Routing models are needed to determine the quality of water as it flows from nonpoint sources through streams and valleys to rivers and large reservoirs. Models are also needed to determine optimal strategies for planning land use, conservation practices, and fertilizer application to maximize agricultural production subject to water quality constraints. Three of the most important agricultural pollutants are suspended sediment, phosphorus, and nitrogen. Robinson [1971] pointed out that sediment is the greatest pollutant of water in terms of volume. Sediment also transports other pollutants, like phosphorus and nitrogen. These two elements are principally involved in lake eutrophication. Frequently algae blooms develop in nutrient-laden water and cause it to have an off-taste and an unpleasant odor. The odor of decaying plants becomes offensive; fish are killed because of reduced dissolved oxygen in the water, and recreation is deterred. The objective of this research was to develop models for use in managing large agricultural watersheds to obtain maximum agricultural production and to maintain water quality standards. The models were designed to: 1. Simulate daily runoff, and sediment, phosphorus, and nitrogen yields from small watersheds (areas land owners and operators) for planning land use, fertilizer application, and conservation practices on subwatersheds. 4. Determine the optimal strategy for each subwatershed to maximize agricultural production for the entire watershed subject to water quality constraints. Generally, water-quality models are developed by adding chemical modeling components to existing runoff and sediment models because runoff and sediment provide transportation for chemicals. Several conceptual models for predicting chemical yields from small watersheds have been presented [Crawford and Donigian, 1973; Donigian and Crawford, 1976; Frere, et al., 1975; Hagin and Amberger, 1974; Kling, 1974; Johnson and Straub, 1971]. However, these models are not applicable to large watersheds because they have no routing mechanism. For this reason, runoff, sediment, and nutrient models were refined and developed here for application to large watersheds. Probably, the most widely used and accepted model for predicting runoff volume is the Soil Conservation Service (SCS) curve number system [U.S. Soil Conservation Service, 1972]. The SCS model was modified by adding a soil-moisture-index accounting procedure [Williams and Laseur, 1976]. The modified water yield model is considerably more accurate than the original SCS model. On a watershed near Riesel, Texas, the modified model explained 95% of the variation in monthly runoff as compared with 65% for the original model. The water-yield model was refined here by replacing the climatic index (lake evaporation) with daily consumptive water use for individual crops.

Williams, J. R.; Hann, R. W.

1978-04-01T23:59:59.000Z

51

Demand Response Performance of GE Hybrid Heat Pump Water Heater  

SciTech Connect

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

52

Laboratory Performance Evaluation of Residential Integrated Heat Pump Water Heaters  

NLE Websites -- All DOE Office Websites (Extended Search)

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

53

Water/Wastewater Engineering Report (High Efficiency Pump/Motor Replacement - M2 Model)  

E-Print Network (OSTI)

Pumping water or wastewater is the largest use of electricity for a municipal water supply or wastewater treatment plant. Increasing the overall efficiency of the pumping system can achieve significant energy savings. Overall pump system efficiency depends on the efficiency of the motor, the pump, and the design of the piping layout. The model developed in this document focuses on improvements mostly to the pumping system rather than a municipal piping system. Furthermore, this model primarily addresses electric motor-driven pumps, and does not include the pumps driven with gasoline or diesel engines.

Liu, Z.; Brumbelow, K.; Haberl, J. S.

2006-10-30T23:59:59.000Z

54

Heat Pump Water Heater Basics | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

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

55

Energy test method development for electric heat pump water heaters  

SciTech Connect

Modifications are proposed for the current US Department of Energy test procedures for water heaters in order to make them applicable to electric heat pump water heaters. The modifications are in the areas of definitions and technical procedures. The latter include the test conditions, test procedures and measurements, and calculations. Reasons for making these modifications and laboratory test data are provided to support the modifications in the technical procedures. The main modifications include: (1) lowering the water supply temperature from 70/sup 0/F to 55/sup 0/F, (2) lowering the tank thermostat setting from 160/sup 0/F to 145/sup 0/F to maintain the same 90/sup 0/F temperature rise, (3) measuring the power input instead of using the nameplate rating as in the case for an electric water heater, and (4) measuring the recovery efficiency instead of calculating it by using the standby losses in the case for an electric water heater.

Wan, C.A.

1980-01-01T23:59:59.000Z

56

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

NLE Websites -- All DOE Office Websites (Extended Search)

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

57

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

NLE Websites -- All DOE Office Websites (Extended Search)

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

58

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

E-Print Network (OSTI)

of houses with a high perfor- mance heat pump as well as resistance, gas, and oil heated houses with a high#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

Oak Ridge National Laboratory

59

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

SciTech Connect

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

60

PV water pumping with a peak-power tracker using a simple six-step square-wave inverter  

SciTech Connect

The application of photovoltaics (PVs) has been increasingly popular, especially in remote areas, where power from a utility is not available or is too costly to install. PV-powered water pumping is frequently used for agriculture and in households. Among many available schemes, the system under study consists of a PV array, a variable-frequency inverter, an induction motor, and a water pump. The inverter feeds the induction motor, which drives the water pump. To seek the optimum power output of the PV array, the inverter is operated at variable frequency, to vary the output of the water pump. The inverter is operated to generate a six-step quasi-square wave, instead of a pulsewidth modulated (PWM) voltage output, to reduce the switching losses. The inverter acts as both a variable-frequency source and a peak-power tracker of the system, thus, having the number of switches minimized. The system is a low-cost design, with a simple control strategy. The dc bus is supported by a dc capacitor; thus, a balance-of-power flow must be maintained to avoid the collapse of the dc-bus voltage. Another advantage of the system is that the current is limited to an upper limit of the PV-array current. Thus, in case a short circuit is developed, the motor winding and the power semiconductor switches can be protected against excessive current flow.

Muljadi, E. [National Renewable Energy Lab., Golden, CO (United States)

1997-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "agricultural water pumping" 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

The Chilled Water and Hot Water Building Differential Pressure Setpoint Calculation - Chilled Water and Hot Water Pump Speed Control  

E-Print Network (OSTI)

More and more variable frequency devices (VFD) are being installed on the chilled water and hot water pumps on the TAMU campus. Those pump speeds are varied to maintain chilled water or hot water building deferential pressure (DP) or return temperature or flow rate at their setpoints. The chilled water and hot water DP setpoint or return temperature setpoint or flow rate setpoint was a constant value or reset based on outside air temperature. In some buildings, the chilled water and hot water DP setpoints were reset based on flow rate, but in many instances those setpoint schedules were either too low to maintain enough building DP requirement or too high and consumed excess energy. The building DP reset schedule based on flow rate is studied and compared with the other pump speed control methods. Because the building DP setpoint based on flow rate method is achieved by tracking the load change, it saves energy than the other methods. In this paper its calculation procedure is generated and the example of the building DP calculation is given.

Turner, W. D.; Bruner, H., Jr.; Claridge, D.; Liu, C.; Deng, S.

2002-01-01T23:59:59.000Z

62

Evaluating Thermoelectric, Agricultural, and Municipal Water Consumption in a National Water Resources Framework  

Science Conference Proceedings (OSTI)

More than a decade ago, EPRI identified water availability constraints as a major issue facing current operations and future development of the electric power sector in the United States and internationally. As a result, EPRI initiated research to assess and reduce both current and future vulnerabilities to water shortages. This report derives and applies algorithms for calculating water consumption by the U.S. electric power, municipal, and agricultural sectors. Using the most recent available ...

2013-12-14T23:59:59.000Z

63

Pumped Solar Domestic Hot Water (SDHW) system design guidelines  

SciTech Connect

This article provides practical guidelines based on experience gained from the design, installation, and commissioning of a pumped Solar Domestic Hot Water (SDHW) system in Saudi Arabia. The authors believe that such information is not readily available and will be useful to designers and installers of SDHW systems within the region. Since the current motivation for buying SDHW systems in Saudi Arabia is not strictly economic, it is imperative that a professional reference be available, against which the soundness of any technical decisions could be confirmed prior to their implementation. The intent is to ensure that systems designed and installed will operate reliably, therefore enhancing customer satisfaction.

Arshad, K.; Said, S.A.M. (King Fahd Univ. of Petroleum Minerals, Dhahran (Saudi Arabia))

1989-01-01T23:59:59.000Z

64

High Efficiency R-744 Commercial Heat Pump Water Heaters  

SciTech Connect

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

65

GROUND WATER PROTECTION ISSUES WITH GEOTHERMAL HEAT PUMPS  

DOE Green Energy (OSTI)

Closed loop vertical boreholes used with geothermal heat pumps are grouted to facilitate heat transfer and prevent ground water contamination. The grout must exhibit suitable thermal conductivity as well as adequate hydraulic sealing characteristics. Permeability and infiltration tests were performed to assess the ability of cementitious grout to control vertical seepage in boreholes. It was determined that a superplasticized cement-sand grout is a more effective borehole sealant than neat cement over a range of likely operational temperatures. The feasibility of using non-destructive methods to verify bonding in heat exchangers is reviewed.

ALLAN,M.L.; PHILIPPACOPOULOS,A.J.

1999-10-01T23:59:59.000Z

66

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-conditioning system including investment, operating fee and pay-back time. The results show that waste water resource heat pump air-conditioning system has a low investment, low operating fee and short payback time.

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

2006-01-01T23:59:59.000Z

67

List of Agricultural Equipment Incentives | Open Energy Information  

Open Energy Info (EERE)

Agricultural Equipment Incentives Agricultural Equipment Incentives Jump to: navigation, search The following contains the list of 90 Agricultural Equipment Incentives. CSV (rows 1 - 90) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active Agricultural Energy Efficiency Program (New York) State Rebate Program New York Agricultural Agricultural Equipment Boilers Chillers Custom/Others pending approval Dishwasher Furnaces Heat pumps Heat recovery Lighting Lighting Controls/Sensors Motor VFDs Motors Water Heaters Commercial Cooking Equipment Commercial Refrigeration Equipment Food Service Equipment Yes Agricultural Lighting and Equipment Rebate Program (Vermont) State Rebate Program Vermont Agricultural Agricultural Equipment Custom/Others pending approval Lighting

68

Field Performance of Heat Pump Water Heaters in the Northeast  

SciTech Connect

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

69

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

Energy.gov (U.S. Department of Energy (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...

70

Application Study of the Pump Water Flow Station for Building Energy Consumption Monitoring and Control Optimization  

E-Print Network (OSTI)

This paper presents a new building energy monitoring and pump speed control method. The pump speed is controlled to maintain the system resistance at an optimized value to approach the best pump efficiency and save pump power. The system resistance can be obtained by the pump head and the water flow rate calculated by the pump water-flow station (PWS), which was recently developed. The PWS measures the water flow rate using the pump head, pump speed, and pump performance curve. This method has been experimentally proved in real HVAC systems. A case study was demonstrated in this paper for application of this new method in a Continuous Commissioning (CC) practice. The case study shows that the PWS can control the pump speed to maintain the optimized system operating point. It can also measure the water flow rate and monitor energy consumption continuously with low installation and almost no maintenance cost. The results show that the new technology can save pump power and increase pump efficiency significantly.

Liu, G.; Liu, M.

2006-01-01T23:59:59.000Z

71

Numerical simulation of hydraulic shock in a water pumping system protected by air  

Science Conference Proceedings (OSTI)

Air may be efficiently used in water pumping system protection from hydraulic shock, due to its elasticity. The paper presents the results regarding the extreme pressures in the discharge duct of a pumping installation, obtained by numerical simulation ... Keywords: air chamber, biphasic flow, dissolution, hydraulic shock, pumping installation

Anca Constantin; Claudiu Stefan Nitescu

2010-10-01T23:59:59.000Z

72

Simulation of water hammer phenomenon in a pumping discharge duct protected by air  

Science Conference Proceedings (OSTI)

Air chamber and free air dispersed throughout the water are two efficient means of protection of a discharge duct from water hammer damages. The paper presents the results regarding the extreme pressures in the discharge duct of a pumping installation, ... Keywords: air chamber, dissolution, free air, pumping installation, water hammer

Anca Constantin; Claudiu Stefan Nitescu

2010-07-01T23:59:59.000Z

73

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

74

Demonstration of a heat pump water heater. Volume 3. Design report  

SciTech Connect

Work performed during the pilot run manufacturing and laboratory testing stages of a heat pump water heater for residential installations is described. A general description of the heat pump water heater is provided, as are detailed discussions of individual components. Also included is a description of the pilot run manufacturing facility and experience, laboratory operations, and laboratory test data.

Sloane, B.D.; Krise, R.C.; Kent, D.D.

1979-12-01T23:59:59.000Z

75

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 or horizontal ground-coupling, an open groundwater loop, or a surface water loop. This paper discusses system performance characteristics, component selection procedures presently being used, improvements currently being considered and future possibilities for improved efficiency and reliability. Optimum designs require proper matching of the heat pump unit to the water circulation system, the building space heating/cooling load and water heating requirements. General trends resulting from system and component choices will be discussed. Water heating methods with these heat pumps will be considered.

Kavanaugh, S.

1988-01-01T23:59:59.000Z

76

U.S. Department of Energy UMTRA Ground Water Project Ground Water Pumping and Monitoring Plan  

Office of Legacy Management (LM)

GWMON 1.12-1 GWMON 1.12-1 U.S. Department of Energy UMTRA Ground Water Project Ground Water Pumping and Monitoring Plan for the Land Farm Pilot Test Monument Valley, Arizona August 2000 Prepared by U.S. Department of Energy Grand Junction Ofice Grand Junction, Colorado Project Number UGW-5 1 1-001 5-21-000 Document Number U0106701 This page intentionally left blank Document Number U0106701 Contents Contents 1.0 Introduction ....................................................................................................................... 1 2.0 Purpose and Scope ........................................................................................................... 1 3.0 Pilot-Test Extraction Wellfield 2 4.0 Water Elevation Measurements and Monitoring ............... 4

77

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

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

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

78

Laboratory evaluation of the emulsifying characteristics of pumps. [Bilge and ballast water oily wastes  

SciTech Connect

The program was devoted to a laboratory investigation of the emulsifying characteristics of different pumps suitable for shipboard pumping of bilge and ballast water oily wastes. The tests were designed to investigate the effect of several parameters, such as oil type, input oil concentration, detergent, pump operating characteristics (pressure and flow rate), and salt versus fresh water, on emulsification. Tests were conducted on the Foster-Miller tests loop. No. 2 fuel oil, lubricating oil and No. 6 fuel oil were the oils tested at concentrations ranging from 1 to 10%. The oils were tested with and without the addition of 10% Gamlen D surfactant. The pumps used were a Parker Diaphragm pump, a Blackmer Sliding Vane pump, an Ingersoll Rand Centrifugal pump and a Deming Centrifugal pump. Pump pressure ranged from 10 to 60 psi and flow rate from 10 to 100 gpm. A total of 270 tests were conducted covering 198 different operating points, 108 concerning pump comparison, 54 concerning oil concentration and surfactant, and 45 concerning salt water.

Harvey, A.C.; Guzdar, A.R.; Fiswell, D.R.

1973-10-01T23:59:59.000Z

79

Laboratory and Field Evaluation of Four Heat Pump Water Heater Systems  

Science Conference Proceedings (OSTI)

Water heating represents the second-largest load in residential buildings in the United States, and also a large load in many commercial and industrial buildings. The Electric Power Research Institute (EPRI) continues research on heat pump water heater (HPWH) systems, which provide high-efficiency electric water heating using the heat pump cycle. In this study, four systems, representing both residential and commercial applications, were tested in the laboratory and/or in the field. An A.O. Smith ...

2012-12-14T23:59:59.000Z

80

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

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

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

Note: This page contains sample records for the topic "agricultural water pumping" 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

Essays on Water Resource Economics and Agricultural Extension  

E-Print Network (OSTI)

fixed fixed Residential water demand3.2 Residential Water Demand Estimation . . . . . . . . .Value of Supply Reliability in Urban Water Systems 3.1 Loss

Buck, Steven Charles

2011-01-01T23:59:59.000Z

82

Renewable Energy Water Pumping Systems Handbook; Period of Performance: April 1--September 1, 2001  

DOE Green Energy (OSTI)

Water is one of the most basic necessities of rural development. This book provides valuable information on how renewable energy technologies can be used for irrigation, livestock watering, and domestic water supplies. This report emphasizes wind and solar energy resources, and hybrid water pumping systems.

Argaw, N.

2004-07-01T23:59:59.000Z

83

Thermal Economic Analysis of an Underground Water Source Heat Pump System  

E-Print Network (OSTI)

The paper presents the thermal economic analysis of an underground water source heat pump system in a high school building based on usage per exergy cost as an evaluation standard, in which the black box model has been used and the cost of underground water has also been considered. The economics of the heat pump and other cooling and heating sources has been compared and then several simple methods to improve the thermal economics of the underground water heat pump system have been put forward.

Zhang, W.; Lin, B.

2006-01-01T23:59:59.000Z

84

Ingredients for energy conservation: water cooled luminaires and the heat pump  

SciTech Connect

The energy crisis has focused attention on all aspects of building energy usage--particularly heating and cooling energy. The possibility of utilizing water-cooled luminaires in an area of high relative humidity is explored. Heating is done by a water source heat pump utilizing the water from the luminaires as source for the heat pump. The energy usage of the heat pump system is then compared with the energy usage of other heat reclaim systems thereby demonstrating the energy conservation capabilities of the system.

Dowless, E.C.

1976-01-01T23:59:59.000Z

85

Linn County Rural Electric Cooperative - Agricultural Energy Efficiency  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Linn County Rural Electric Cooperative - Agricultural Energy Linn County Rural Electric Cooperative - Agricultural Energy Efficiency Rebate Program Linn County Rural Electric Cooperative - Agricultural Energy Efficiency Rebate Program < Back Eligibility Agricultural Savings Category Other Heating & Cooling Commercial Heating & Cooling Cooling Appliances & Electronics Home Weatherization Construction Commercial Weatherization Design & Remodeling Heat Pumps Heating Commercial Lighting Lighting Manufacturing Water Heating Maximum Rebate 50% of installed costs Geothermal Heat Pumps: 20 tons General: See equipment brochure for specific technology incentive caps Program Info State Iowa Program Type Utility Rebate Program Rebate Amount Indoor Agricultural Lighting: Varies; see program web site Dairy/Livestock: Varies

86

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

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

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

87

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 are high and the cooling season is long. Because commercial kitchens and laundry facilities have simultaneous water heating and cooling needs, they are excellent applications for heat pump water heaters. Typical heat pump water heaters (HPWHs) operate at an annual coefficient of performance (COP) of approximately 3.0 for water heating alone. Space conditioning benefits of about 0.67 Btu are delivered at no additional cost for each Btu of water heating output. In situations in which this cooling output is valued, the dual thermal outputs for heating and cooling make heat pump water heaters particularly attractive. The comfort value of added cooling in overheated facilities and the resulting increase in employee and customer satisfaction are frequently cited as additional benefits. This paper describes currently available heat pump water heating equipment and offers guidelines for successful applications in commercial facilities. The results of field test programs involving more than 100 units in Alabama, Georgia, Mississippi, Tennessee, South Carolina, and other areas are incorporated. Initial conclusions are drawn from a reliability database, and interviews with utility applications specialists and manufacturers are discussed. Design tools are reviewed, including a new comprehensive computer simulation model. Emphasis is placed on identifying sound candidates for installations and on application and design considerations. A brief survey is provided of environmental implications of heat pump water heaters and new developments in heat pump water heater equipment.

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

1992-05-01T23:59:59.000Z

88

Coupled simulation of wave propagation and water pumping phenomenon in driven concrete piles  

Science Conference Proceedings (OSTI)

The purpose of the paper is to simulate the water pumping phenomenon that may cause damage to driven concrete pile below water. The cracked concrete is modeled as water saturated porous media, where the cracked region is given a high permeability. A ... Keywords: Coupled, Cracking, Hydro-mechanical, Pile, Porous media, Wave propagation

P. Kettil; G. Engstrm; N. -E. Wiberg

2007-02-01T23:59:59.000Z

89

Performance Analysis of Air-Source Variable Speed Heat Pumps and Various Electric Water Heating Options  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Analysis of Air- Analysis of Air- Source Variable Speed Heat Pumps and Various Electric Water Heating Options Jeffrey Munk Oak Ridge National Laboratory 2 Managed by UT-Battelle for the U.S. Department of Energy Presentation_name Acknowledgements * Tennessee Valley Authority - David Dinse * U.S. Department of Energy * Roderick Jackson * Tony Gehl * Philip Boudreaux * ZEBRAlliance 3 Managed by UT-Battelle for the U.S. Department of Energy Presentation_name Overview * Electric Water Heating Options - Conventional Electric Water Heaters - Heat Pump Water Heaters * Air-Source * Ground-Source - Solar Thermal Water Heater * Variable Speed Heat Pumps - Energy Use Analysis - Measured Performance - Operational Characteristics 4 Managed by UT-Battelle for the U.S. Department of Energy Presentation_name Water Heating Options

90

Agricultural implications of reduced water supplies in the Green and Upper Yellowstone River Basins  

Science Conference Proceedings (OSTI)

The growth of the energy sector in the energy-rich but water-restricted Western US has presented a potential conflict with the irrigated agricultural sector. This study measures the direct impacts on farm income and employment resulting from the transfer of water from agriculture to energy in two specific geographical areas - the Green and Upper Yellowstone River Basins. We used a linear programming model to evaluate the impacts of reduced water supplies. Through the use of regional multipliers, we expanded our analysis to include regional impacts. Volume I provides the major analysis of these impacts. Volume II provides further technical data.

Lansford, R. R.; Roach, F.; Gollehon, N. R.; Creel, B. J.

1982-02-01T23:59:59.000Z

91

Energy Basics: Absorption Heat Pumps  

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

Systems Air-Source Heat Pumps Ductless Mini-Split Heat Pumps Absorption Heat Pumps Geothermal Heat Pumps Supporting Equipment for Heating & Cooling Systems Water Heating...

92

Energy Basics: Heat Pump Systems  

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

Systems Air-Source Heat Pumps Ductless Mini-Split Heat Pumps Absorption Heat Pumps Geothermal Heat Pumps Supporting Equipment for Heating & Cooling Systems Water Heating Heat...

93

Energy Basics: Geothermal Heat Pumps  

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

Systems Air-Source Heat Pumps Ductless Mini-Split Heat Pumps Absorption Heat Pumps Geothermal Heat Pumps Supporting Equipment for Heating & Cooling Systems Water Heating...

94

Advanced Heat Pump Water Heating Technology: Testing Commercial and Residential Systems in the Laboratory and Field  

Science Conference Proceedings (OSTI)

Heat pump water heaters (HPWHs) provide electric water heating at a much greater overall efficiency than conventional electric resistance systems. In the residential market, approximately half of all water heaters are electric resistance; these systems can be replaced by HPWHs in most applications with expected savings of 30%60%. In commercial applications, most systems presently use natural gas or another fuel in direct combustion. Emerging HPWH systems are now able to provide water heating ...

2013-12-20T23:59:59.000Z

95

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

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

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

96

Performance Assessment of an Eco-Cute Heat Pump Water Heater  

Science Conference Proceedings (OSTI)

This report describes and documents construction, performance, and application of a heat pump water heater (HPWH) that uses carbon dioxide (CO2) as the refrigerant. The term Eco-cute refers to carbon dioxide-based heat pump technology jointly developed by Tokyo Electric Power Company (TEPCO), Denso Corporation, and Central Research Institute of Electric Power Industry (CRIEPI). The system received and tested by EPRI is manufactured by Daikin Industries Ltd., located in Osaka, Japan. Use of CO2 as a ref...

2008-12-08T23:59:59.000Z

97

Farmers Electric Cooperative - Residential/Agricultural Energy Efficiency  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Farmers Electric Cooperative - Residential/Agricultural Energy Farmers Electric Cooperative - Residential/Agricultural Energy Efficiency Rebate Program Farmers Electric Cooperative - Residential/Agricultural Energy Efficiency Rebate Program < Back Eligibility Agricultural Residential Savings Category Heating & Cooling Commercial Heating & Cooling Heat Pumps Appliances & Electronics Water Heating Program Info State Texas Program Type Utility Rebate Program Rebate Amount Electric Water Heaters: $100 Air-Source Heat Pumps: $150 Geothermal Heat Pumps: $1,000 Provider Farmers Electric Cooperative Farmers Electric Cooperative offers incentives for its residential and agricultural members to increase the energy efficiency of eligible homes and facilities. In order to receive rebates, equipment and installation must meet program requirements. Rebates are available for qualifying air

98

Assessment and Demonstration of Advanced Heat Pumps for Commercial Building Water Heating Applications  

Science Conference Proceedings (OSTI)

Heat pump water heaters (HPWH) are an alternative to electric resistance or natural gas for domestic water heating. HPWHs are less common than other water heating technologies, but offer the potential for improved energy efficiency and potential for reduction of net CO2 emissions. New products, mainly for residential application, have been introduced to the American market over the last 2 years, which have been previously reviewed by EPRI. This report focuses on commercial applications and provides initi...

2010-12-31T23:59:59.000Z

99

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

SciTech Connect

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

100

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 of 2~5?. The critical technical issue in the surface water heat pump is how to extract the freezing latent heat. The urban surface water supplying areas of 102 large or median cities in China are measured and counted. The supply area ratio, and mean heating or cooling need index are calculated separately and the 102 cities are classified by the three parameters. The data indicate that surface water can supply heat and cool source for 42.1% of the urban waterside buildings in China.

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

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "agricultural water pumping" 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

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 conception of underground hydrogeology and the rationale of seepage flow mechanics, a geologic conceptual model of doublet reinjection and a seepage flow model of heat transportation are proposed in this paper. The temperature distribution in the temperature field was obtained by a coupled method of the heat transportation equation and groundwater seepage flow equation fitting for the seepage-affected section. The temperature changes in aquifer and heat storage efficiency are analyzed under different working conditions. All the work referenced above provided references for the popularization and evaluation of well-water source heat pump.

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

2006-01-01T23:59:59.000Z

102

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

NLE Websites -- All DOE Office Websites (Extended Search)

can be cost effective in all regionsfor most single family homes, especially when the water heater is not installed in a conditioned space. HPWHs are not cost effective for most...

103

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

E-Print Network (OSTI)

heater analysis model (WHAM) and a hot water draw model,heaters is calculated using WHAM, which accounts for a rangeTo account for this factor, WHAM is expanded to include the

Franco, Victor

2011-01-01T23:59:59.000Z

104

Energy Savings and Breakeven Cost for Residential Heat Pump Water...  

NLE Websites -- All DOE Office Websites (Extended Search)

volume of 45-60 galday, depending on mains water temperature. For every simulation, a home was also modeled to quantify the interaction between the HPWH and the space heating...

105

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

106

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

SciTech Connect

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

2012-01-01T23:59:59.000Z

107

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

SciTech Connect

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

108

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 calculation, it illuminates that the post-located auxiliary heat source cheaper and superior to the fore-located one.

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

2006-01-01T23:59:59.000Z

109

Development of High Efficiency Carbon Dioxide Commercial Heat Pump Water Heater  

Science Conference Proceedings (OSTI)

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

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

2012-07-01T23:59:59.000Z

110

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

111

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

112

Renewable Energy for Water Pumping Applications In Rural Villages; Period of Performance: April 1, 2001--September 1, 2001  

DOE Green Energy (OSTI)

This report introduces conventional and renewable energy sources for water pumping applications in rural villages by reviewing the technologies and illustrating typical applications. As energy sources for water pumping, the report discusses diesel/gasoline/kerosene engines, grid power supplies, traditional windmills, electrical wind turbines, and PV.

Argaw, N.; Foster, R.; Ellis, A.

2003-07-01T23:59:59.000Z

113

Experiment System Analysis of an Indirect Expansion Solar Assisted Water Source Heat Pump Radiant Floor Heating System  

Science Conference Proceedings (OSTI)

A solar assisted water source heat pump for Radiant Floor Heating (SWHP-RFH) experimental system with heat pipe vacuum tube solar collector as heating source and radiant floor as terminal device is proposed in the paper. The Mathematics Model of dynamic ... Keywords: solar energy, water source heat pump, radiant floor heating systems, system dynamic COP

Qu Shilin; Ma Fei; Liu Li; Yue Jie

2009-10-01T23:59:59.000Z

114

Optimization of a Savonius rotor vertical-axis wind turbine for use in water pumping systems in rural Honduras  

E-Print Network (OSTI)

The D-lab Honduras team designed and constructed a wind-powered water pump in rural Honduras during IAP 2007. Currently, the system does not work under its own power and water must be pumped by hand. This thesis seeks to ...

Zingman, Aron (Aron Olesen)

2007-01-01T23:59:59.000Z

115

Deep water pipe, pump, and mooring study: Ocean Thermal Energy Conversion program. Final report  

DOE Green Energy (OSTI)

The ocean engineering issues affecting the design, construction, deployment, and operation of Ocean Thermal Energy Conversion (OTEC) power plants are of key importance. This study addressed the problems associated with the conceptual design of the deep-water pipe, cold-water-pumping, and platform mooring arrangements. These subsystems fall into a natural grouping since the parameters affecting their design are closely related to each other and to the ocean environment. Analysis and evaluations are provided with a view toward judging the impact of the various subsystems on the overall plant concept and to provide an estimate of material and construction cost. Parametric data is provided that describes mooring line configurations, mooring line loads, cold water pipe configurations, and cold water pumping schemes. Selected parameters, issues, and evaluation criteria are used to judge the merits of candidate concepts over a range of OTEC plant size from 100 MWe to 1000 MWe net output power.

Little, T.E.; Marks, J.D.; Wellman, K.H.

1976-06-01T23:59:59.000Z

116

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

E-Print Network (OSTI)

in homes compared to traditional electric resistance water heaters. Researchers at the National Renewable is a function of surrounding air temperature, humidity, hot water usage, and the logic controlling the heat pump

117

SOLERAS: Rural/agricultural project technical overview  

SciTech Connect

The objective of the Rural and Agricultural Solar Applications Projects is to enhance the quality of rural life in hot, arid climates by providing systems that use renewable or regenerable energy sources for domestic or communal, agricultural, and local industrial applications. These systems must provide domestic services such as hot water, heat for cooking, and electric power for lighting, communications, and refrigeration. In addition, agricultural applications such as water desalination, irrigation pumping, and heat and electricity for crop or food processing and local industrial functions, can become the basis for improving the villagers' standard of living. 29 refs., 82 figs., 23 tabs.

Huraib, F.S.; Adcock, J.P.; Knect, R.D.

1987-04-01T23:59:59.000Z

118

Field Monitoring of a Geothermal Heat Pump Water Heater: Unicoi County High School, Erwin, Tennessee  

Science Conference Proceedings (OSTI)

A geothermal heat pump water heater (HPWH) system -- installed to preheat water entering a 250-gallon gas-fired water heater (GWH) at a Tennessee high school -- reduced water-heating costs by 34 percent per year, compared to the base case GWH system. This report provides results from field monitoring of the geothermal HPWH system, tested in three distinct operating modes for five months. The program goal was to assess the energy and economic benefits of the GWH system with and without the geothermal HPWH...

2003-10-15T23:59:59.000Z

119

Analysis of the performance and space-conditioning impacts of dedicated heat-pump water heaters  

SciTech Connect

A description is given of the development and testing of the newly-marketed dedicated heat pump water heater (HPWH), and an analysis is presented of its performance and space conditioning impacts. This system utilizes an air-to-water heat pump, costs about $1000 installed, and obtains a coefficient of performance (COP) of about 2.0 in laboratory and field tests. Since a HPWH is usually installed indoors and extracts heat from the air, its operation is a space conditioning benefit if an air conditioning load exists and a penalty if a space heating load exists. To investigate HPWH performance and a space conditioning impacts, a simulation has been developed to model the thermal performance of a residence with resistance baseboard heat, air conditioning, and either heat pump or resistance water heating. The building characteristics are adapted for three US geographical areas (Madison, Wisconsin; Washington, DC; and Ft. Worth, Texas), and the system is simulated for a year with typical weather data. For each city, HPWH COPs are calculated monthly and yearly. In addition, the water heating and space conditioning energy requirements of HPWH operation are compared with those of resistance water heater operation to determine the relative performance ratio (RPR) of the HPWH. The annual simulated RPRs range from 1.5 to 1.7, which indicate a substantial space heating penalty of HPWH operation in these cities.

Morrison, L.; Swisher, J.

1980-12-01T23:59:59.000Z

120

Review: The impact of agricultural activities on water quality: A case for collaborative catchment-scale management using integrated wireless sensor networks  

Science Conference Proceedings (OSTI)

The challenge of improving water quality is a growing global concern, typified by the European Commission Water Framework Directive and the United States Clean Water Act. The main drivers of poor water quality are economics, poor water management, agricultural ... Keywords: Agricultural activities, Catchment, Collaborative, Water quality monitoring and management, Wireless sensor networks

Huma Zia, Nick R. Harris, Geoff V. Merrett, Mark Rivers, Neil Coles

2013-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "agricultural water pumping" 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

Modeling the infrastructure dynamics of China -- Water, agriculture, energy, and greenhouse gases  

Science Conference Proceedings (OSTI)

A comprehensive critical infrastructure analysis of the People`s Republic of China was performed to address questions about China`s ability to meet its long-term grain requirements and energy needs and to estimate greenhouse gas emissions in China likely to result from increased agricultural production and energy use. Four dynamic computer simulation models of China`s infrastructures--water, agriculture, energy and greenhouse gas--were developed to simulate, respectively, the hydrologic budgetary processes, grain production and consumption, energy demand, and greenhouse gas emissions in China through 2025. The four models were integrated into a state-of-the-art comprehensive critical infrastructure model for all of China. This integrated model simulates diverse flows of commodities, such as water and greenhouse gas, between the separate models to capture the overall dynamics of the integrated system. The model was used to generate projections of China`s available water resources and expected water use for 10 river drainage regions representing 100% of China`s mean annual runoff and comprising 37 major river basins. These projections were used to develop estimates of the water surpluses and/or deficits in the three end-use sectors--urban, industrial, and agricultural--through the year 2025. Projections of the all-China demand for the three major grains (corn, wheat, and rice), meat, and other (other grains and fruits and vegetables) were also generated. Each geographic region`s share of the all-China grain demand (allocated on the basis of each region`s share of historic grain production) was calculated in order to assess the land and water resources in each region required to meet that demand. Growth in energy use in six historically significant sectors and growth in greenhouse gas loading were projected for all of China.

Conrad, S.H.; Drennen, T.E.; Engi, D.; Harris, D.L.; Jeppesen, D.M.; Thomas, R.P.

1998-08-01T23:59:59.000Z

122

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: switching on demand between completely air-source and completely water-coupled or using a concurrent partial water-coupled and partial air-coupled mode operation. The water supply for the water-coupled mode of operation would be the municipal water system. An estimate of the economic worth of this system concept was made by examining the incremental cost to install such a system against the expected savings associated with these systems.

Morehouse, J. H.; Khan, J. A.; Connor, L. N.; Pal, D.

1992-05-01T23:59:59.000Z

123

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

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

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

124

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 scheme in economical, technical, and environmental aspects, it is determined that the scheme of the groundwater source heat pump has better energy efficiency than others. The GHPWTS can take full advantage of the heat source from groundwater and benefit of electricity difference pricing during a day. Its character is a combination of a strength and another strength. It is the lowest cycle cost of all chide and heat source schemes. The GHPWTS has the best economic benefit and runs stably and reliably. Its advantage is clearly compared with other schemes. There is a real value for the project that is similar to the characteristic of this project and the condition of the water source.

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

2006-01-01T23:59:59.000Z

125

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

Science Conference Proceedings (OSTI)

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

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

2012-02-01T23:59:59.000Z

126

Rapidly Expanding Uses of Climate Data and Information in Agriculture and Water Resources: Causes and Characteristics of New Applications  

Science Conference Proceedings (OSTI)

During the last 20 years the use of climate data and information in agriculture and water resources has increased dramatically. This has resulted from vastly improved access to comprehensive datasets and climate information made available by wide ...

Stanley A. Changnon; Kenneth E. Kunkel

1999-05-01T23:59:59.000Z

127

The Influence of Different Inflow Water Rate and Temperature on Heat Exchange Performance of Underground Heat Pump  

Science Conference Proceedings (OSTI)

in the paper, the influence of different inflow water rate and temperature on heat exchange performance of underground heat pump were discussed by experiment, two vital parameters was defined to measure the properties of ground heat exchanger: Energy ... Keywords: heat pump, underground tube, influential factors, parameters

Zheng Min; Li Bai-yi

2011-11-01T23:59:59.000Z

128

Energy Basics: Air-Source Heat Pumps  

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

Systems Air-Source Heat Pumps Ductless Mini-Split Heat Pumps Absorption Heat Pumps Geothermal Heat Pumps Supporting Equipment for Heating & Cooling Systems Water Heating...

129

Comparing Heat Pump Water Heaters (HPWHs) to Traditional Resistive Water Heaters: Assessing HPWH Performance for Southern Company  

Science Conference Proceedings (OSTI)

In 2009, Southern Company partnered with the Electric Power Research Institute (EPRI) to investigate the use of heat pump water heaters (HPWH) technology. The investigation was part of EPRI's Energy Efficiency Demonstration, which was a field-performance assessment of six emerging, efficient end-use technologies, deployed with extensive measurement instrumentation at multiple sites throughout the U.S. The goals of the multiyear project were to test, evaluate, demonstrate, andif ...

2013-09-04T23:59:59.000Z

130

Performance analysis of dedicated heat-pump water heaters in an office building  

SciTech Connect

An evaluation is made of the performance of two generic dedicated heat pump water heaters (HPWHs) in supplying the domestic hot water (DHW) needs of a medium-sized office building in Colorado. Results are based on preliminary data measurements, and assumptions are made to compensate for a faulty flow meter. A stand-alone heat pump plumbed to a conventional tank obtains a coefficient of performance (COP) of 2.4 but only delivers load water temperatures of about 41/sup 0/C (105/sup 0/F) because of the 15,142 L/day (4000 gal/day) recirculating loop flow. An industrial-grade stand-alone HPWH will replace this unit. An integral heat pump/tank unit is being tested, but results are not available because of compressor starting problems. Recirculating loop losses account for 75% of the energy delivered by the HPWHs. These losses could be reduced by 75% if the recirculating loop were insulated, thus reducing the DHW fuel costs by 50%. The insulation expense could be paid in less than 3 years by savings in DHW fuel costs.

Morrison, L.

1981-05-01T23:59:59.000Z

131

Improving Water Loop Heat Pump Performance by Using Low Temperature Geothermal Fluid  

DOE Green Energy (OSTI)

Water-loop heat pump (WLHP) systems are an important option for space conditioning of commercial buildings. They provide the opportunity of saving energy through heat recovery and thermal balancing when heating and cooling occur simultaneously. WLHP systems typically operate with loop water temperature between 16 C and 32 C. When cooling loads dominate, loop water temperatures are maintained below 32 C by rejecting excess heat with a cooling tower. When heating dominates, loop water temperatures are maintained above 16 C by a heater input. The capacity and efficiency of water-source heat pumps (WSHP) in both operating modes are strong functions of the inlet water temperature. The emphasis of this paper is on the analysis of system performances, energy savings of the mixed cooling and heating mode of the WLHP systems for it is a unique operating mode in the air-conditioning and space heating systems. The energy saving effect by using low temperature geothermal as the heat input for WLHP systems was examined.

Xinguo, Li

1995-01-01T23:59:59.000Z

132

Performance Testing Residential Heat Pump Water Heaters under South- and Central-Florida Climate Conditions: Hot, Humid Climate and Warm Ground Water Pose Unusual Operating Environment for Heat Pump Water Heaters  

Science Conference Proceedings (OSTI)

Heat pump water heaters (HPWHs) are known to provide considerable energy savings compared with electric resistance devices in many applications. However, as their performance is climate-dependent, it is important to understand their operation in extreme climates. Southern and Central Florida presents an extreme climate for HPWHs, as the air temperature, humidity, and entering water temperatures are all high nearly year-round. This report examines HPWH performance in the Florida Power & Light ...

2013-09-30T23:59:59.000Z

133

HYDROSTATIC JOURNAL BEARING WATER TESTS CONDUCTED IN MODIFIED PK-A PUMP  

SciTech Connect

A hydrostatic journal bearing mounted near the impeller of an overhung vertical shaft centrifugal pump was subjected to water testing as a part of the molten salt lubrication investigation at ORNL. Three tests were performed with bearings having radial clearances of 0.003 in., 0.0075 in., and 0.005 in. The first journal and bearing (0.003 in. radial clearance) were found to be heavily scored after testing. Only faint localized scratches were found on tho second journal (0.0075 in. radial clearance) and these may have been caused by the many test starts and stops. Localized scratches, somewhat deeper than those on the second journal, were observed on the third journal, but no measurable wear had occurred from testing. An apparent inconsistency was noted in that at the same pump operating condition the bearing load as computed from pocket pressure data increased by a factor of 1.2 to 1.7 as bearing radial clearance was increased from 0.005 in. to 0.0075 in. The configuration of the submerged hydrostatic bearing used in these tests appears to be satisfactory for use as a lower journal bearing in this size and type of centrifugal pump, at least insofar as operation in water is concerned. (auth)

Gilkey, H.E.; Smith, P.G.

1959-02-01T23:59:59.000Z

134

An investigation of photovoltaic powered pumps in direct solar domestic hot water systems  

DOE Green Energy (OSTI)

The performance of photovoltaic powered pumps in direct solar domestic hot water (PV-SDHW) systems has been studied. The direct PV- SDHW system employs a photovoltaic array, a separately excited DC- motor, a centrifugal pump, a thermal collector, and a storage tank. A search methodology for an optimum PV-SDHW system configuration has been proposed. A comparison is made between the long-term performance of a PV-SDHW system and a conventional SDHW system operating under three control schemes. The three schemes are: an ON-OFF flow controlled SDHW system operating at the manufacturer-recommended constant flow rate, and a linear proportional flow controlled SDHW system with the flow proportional to the solar radiation operating under an optimum proportionality. 13 refs., 6 figs.

Al-Ibrahim, A.M.; Klein, S.A.; Mitchell, J.W.; Beckman, W.A.

1996-09-01T23:59:59.000Z

135

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

Science Conference Proceedings (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

136

Rotordynamics/discharge water-hammer coupling via seals in pump rotordynamics  

E-Print Network (OSTI)

A new closed-loop frequency-domain model is developed to incorporate the water hammer effect with pump rotordynamics, in order to investigate the sub-synchronous instability problem observed in a field pump. Seal flow-rate perturbations due to eccentricity are calculated from Soulas and San Andres's seal code. A complete transfer function matrix between rotor motion and reaction force due to pressure perturbation is developed in detail. Stability analysis with transfer-function'add-in' modules is conducted in XLTRC2. Seal clearances and the reaction force angle are found to be important in shifting natural frequencies and damping. The sub-synchronous instability observed in field is duplicated successfully with double-clearance seals.

Zhang, Kaikai

2005-05-01T23:59:59.000Z

137

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

SciTech Connect

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

138

The effect of location on the predicted performance of a heat pump water heater  

Science Conference Proceedings (OSTI)

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 HPWH extracts energy from the air in its environment, the question arises as to how this energy extraction would affect the house heating, ventilating, and air-conditioning (HVAC) system if the HPWH were located in a conditioned space of a household. A second question concerns the savings obtained by locating the HPWH in an unconditioned space such as a garage or basement. The effect of locating the HPWH in the conditioned spaces of houses with a high-performance heat pump as well as resistance- gas- and oil-heated houses with a high performance electric air conditioner was studied. All calculations were made on a desktop computer. Weather bin data and inlet water temperatures for each city were used to calcuate the energy consumption for the house first with a resistance water heater, and then with a HPWH. The difference between these values was used to calculate the performance factor (PF) of the HPWH. The HPWH will add to the house heating load in winter and lessen the house cooling load in summer.

Levins, W.P.

1982-01-01T23:59:59.000Z

139

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

SciTech Connect

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

140

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

Science Conference Proceedings (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

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141

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

SciTech Connect

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

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

2007-09-01T23:59:59.000Z

142

Control system for electric water heater with heat pump external heat source  

Science Conference Proceedings (OSTI)

A control system for an electric water heater operatively associated with an external heat source, such as a heat pump. The water heater includes a water storage tank provided with an electric tank heating unit having a tank thermostat which closes in response to water temperature in the tank, allowing a flow of current through the tank heating unit so as to turn it on to heat the water, and which opens when the tank thermostat has been satisfied, interrupting the current flow so as to turn the tank heating unit off. The control system as responsive to the initial current surge through the tank heating unit when the tank thermostat closes to interrupt the current flow to the tank heating unit so as to maintain the heating unit off and to turn on the external heat source and maintain it on until the tank thermostat opens. The initial current surge cleans the contacts of the tank thermostat by burning off any insulating oxide residues which may have formed on them. The control system includes means responsive to abnormal conditions which would prevent the external heat source from heating water effectively for turning off the external heat source and turning on the tank heating unit and maintaining the external heat source off and the tank heating unit on until the tank thermostat is satisfied.

Shaffer Jr., J. E.; Picarello, J. F.

1985-09-10T23:59:59.000Z

143

Residential Ground Source Heat Pumps with Integrated Domestic Hot Water Generation: Performance Results from Long-Term Monitoring  

SciTech Connect

Ground source heat pumps (GSHPs) show promise for reducing house energy consumption, and a desuperheater can potentially further reduce energy consumption where the heat pump from the space conditioning system creates hot water. Two unoccupied houses were instrumented to document the installed operational space conditioning and water heating efficiency of their GSHP systems. This paper discusses instrumentation methods and field operation characteristics of the GSHPs, compares manufacturers' values of the coefficients of performance calculated from field measured data for the two GSHPs, and compares the measured efficiency of the desuperheater system to other domestic hot water systems.

Stecher, D.; Allison, K.

2012-11-01T23:59:59.000Z

144

A decision-oriented model to evaluate the effect of land use and agricultural management on herbicide contamination in stream water  

Science Conference Proceedings (OSTI)

Modelling stream water pollution by herbicides in agricultural areas is a critical issue since numerous and incompletely known processes are involved. A decision-oriented model, SACADEAU-Transf, which represents water and pesticide transfer in medium-sized ... Keywords: Agriculture, Catchment, Decision oriented, Herbicide, Modelling, Pesticide, Stream water quality, Subsurface flow, Surface flow

Chantal Gascuel-Odoux; Pierre Aurousseau; Marie-Odile Cordier; Patrick Durand; Frederick Garcia; Vronique Masson; Jordy Salmon-Monviola; Florent Tortrat; Ronan Trepos

2009-12-01T23:59:59.000Z

145

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

SciTech Connect

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

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

2012-02-01T23:59:59.000Z

146

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

SciTech Connect

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

147

Apparatus and method for pumping hot, erosive slurry of coal solids in coal derived, water immiscible liquid  

SciTech Connect

An apparatus for and method of pumping hot, erosive slurry of coal solids in a coal derived, water immiscible liquid to higher pressure involves the use of a motive fluid which is miscible with the liquid of the slurry. The apparatus includes a pump 12, a remote check valve 14 and a chamber 16 between and in fluid communication with the pump 12 and check valve 14 through conduits 18,20. Pump 12 exerts pressure on the motive fluid and thereby on the slurry through a concentration gradient of coal solids within chamber 16 to alternately discharge slurry under pressure from the outlet port of check valve 14 and draw slurry in through the inlet port of check valve 14.

Ackerman, Carl D. (Olympia, WA)

1983-03-29T23:59:59.000Z

148

Irrigation pumping using geothermal energy  

DOE Green Energy (OSTI)

The potential of using geothermal energy in an isobutane binary system to drive directly a cluster of irrigation pumps was evaluated. This three well geothermal system, based at 150{sup 0}C (302{sup 0}F) resource at 2000 m (6560 ft), would cost an estimated $7,800,000 in capital investment to provide 6000 gpm of irrigation water from 12 water wells. It would serve approximately 4.5 square miles of irrigated agricultural land, with the delivered water costing $106.76 per acre-foot. This compares with an estimated cost of $60.78 per acre-foot for a conventional irrigation system driven by natural gas at the current price (1980 dollars) of $2.72/mm Btu. It is obvious that if natural gas prices continue to rise, or if geothermal resources can be found at depths less than 2000 meters, then the geothermal irrigation pumping system would be attractive economically. The importance of water to the economy and growth of Arizona was summarized. Total water consumption in Arizona is about 7,600,000 acre-feet annually of which about 87% is used for agriculture. Total supply from the Colorado River and water runoff is only 2,600,000 acre-feet per year, resulting in a net potable groundwater depletion of about 4,000,000 acre-feet per year assuming a recharge rate of about 1,000,000 acre-feet per year.

White, D.H.; Goldstone, L.A.

1982-08-01T23:59:59.000Z

149

Heat-pump desuperheaters for supplying domestic hot water - estimation of energy savings and economic viability for residential applications  

SciTech Connect

The heat reclaimer is a double-wall heat exchange system that removes superheat from the heat pump (or central air conditioning) cycle and uses it to heat water for domestic uses. During summer operation, this heat would normally be rejected to the atmosphere without being used. Thus, water heating is accomplished using essentially no primary fuel. In winter, the heat extracted from the cycle would have been used for space heating. However, energy savings are possible above the heat pump balance point because water heating is performed at an enhanced efficiency. Potential energy savings and economic viability of the heat reclaimer were determined for 28 sites throughout the United States. These results indicate that the heat reclaimer is not economically attractive compared with gas- or oil-fired water heating systems. However, it is competitive with electric resistance water heaters. Based on these results, a calculational scheme has been developed that could be integrated into the model audit procedure.

Olszewski, M.; Fontana, E.C.

1983-05-01T23:59:59.000Z

150

Economic viability of heat pump desuperheaters for supplying domestic hot water  

Science Conference Proceedings (OSTI)

The heat reclaimer is a heat exchange device that removes superheat from the refrigerant gas in a heat pump or central air conditioning unit and uses that extracted energy to heat water for domestic uses. This analysis examines the energy-saving potential and economic benefit of the heat reclaimer. Energy savings were calculated using a modified bin analytical technique. Economic viability was determined using the simple payback criterion. The analysis was performed for 28 cities in the United States to gain an understanding of the relationship between energy savings, economic viability, and climate. The results of the assessment indicate that the heat reclaimer has payback periods greater than seven years when compared with oil- or gas-fired water heating systems. Because of the long payback periods, the heat reclaimer does not appear to be economically feasible for these applications. However, when compared to electric-resistance water heating units, the heat reclaimer is economically viable, especially in areas where the air conditioning load is substantial or where the price of electricity is high.

Olszewski, M.

1984-01-01T23:59:59.000Z

151

Energy Basics: Ductless, Mini-Split Heat Pumps  

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

Systems Air-Source Heat Pumps Ductless Mini-Split Heat Pumps Absorption Heat Pumps Geothermal Heat Pumps Supporting Equipment for Heating & Cooling Systems Water Heating...

152

Microfluidic system with integrated electroosmotic pumps, concentration gradient generator and fish cell line (RTgill-W1)--towards water toxicity  

E-Print Network (OSTI)

, and the results were quantified using a Live/DeadTM cell assay. This work is a preliminary study cell line (RTgill-W1)--towards water toxicity testing Tomasz Glawdel,a Caglar Elbuken,a Lucy E. J. Leeb that incorporates electroosmotic pumps, a concentration gradient generator and a fish cell line (rainbow trout gill

Le Roy, Robert J.

153

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 in the U.S. market--to evaluate the cost of saved energy as a function of climate. The performance of HPWHs laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated

154

1 Flow in Porous Media Oil companies often pump water into the cavities of the earth where the oil is situated to drive  

E-Print Network (OSTI)

1 Flow in Porous Media Oil companies often pump water into the cavities of the earth where the oil is situated to drive out the oil. In a simplified situation, as given in figure 1 we have a rectangular block of porous material filled with oil. Water is pumped in from the left, creating a presure difference between

Gander, Martin J.

155

Economically Optimum Agricultural Utilization of a Reclaimed Water Resource in the Texas Rolling Plains  

E-Print Network (OSTI)

The U.S. Army Corps of Engineers (COE) has proposed a project that would reduce the flow from saline springs and seeps within the groundwater alluvium of the Red River Basin. While the amount of salts moving through the alluvium would be controlled by the project, total water quantity would not be appreciably affected. Presently, salinity levels in the basin are quite high, making irrigated agriculture an infeasible alternative. In areas affected by salinity, salts accumulate in the active root zone, thereby restricting the availability of soil moisture to the crop and reducing yield. To counteract the deleterious presence of the salts, extra irrigation water is applied to "leach" the salts below the active root zone thus maintaining the yield at some specified level. Waters containing over 13,000 parts per million (ppm) salts have been sampled by the COE in the Pease River watershed (a subsector of the entire area to be impacted by the project). It is estimated that installation of the project would reduce this level to approximately 3000 ppm. Although 3000 ppm is not below the tolerance threshold of most plants, rainfall in the area is sufficient to act as a natural leaching agent. The purpose of this study was to estimate the response of the agricultural sector to the project. A recursive linear program was designed in such a manner that the time path of producer adjustments to the reclaimed water source could be estimated. The Pease River watershed was chosen due to the sizable reduction in the salinity due to the proposed project, relative to other areas within the basin. By considering only a single watershed, the adoption process could be more closely studied. Two scenarios were considered in the analysis in an attempt to better understand the effects of the initial assumptions on the measure of project benefits. The first scenario applied guidelines established by the Water Resources Council (WRC). WRC guidelines required the use of OBERS SERIES E' yield projections, normalized prices, and an interest rate of 7.125 percent to discount future costs and benefits. The second scenario applied in alternative criteria, which assumed no trend in yield, a three-year average of current prices, and a real interest rate of 2.5 percent. Since probabilistic estimates indicating the improvement in water quality through time were unavailable from the COE, it was assumed that all improvement in water quality occurred linearly over time, with full water quality improvement in the tenth year. The adjustment process was then evaluated over a twenty year horizon. Several irrigation strategies were considered for each crop, thereby allowing the model to select an optimal leaching policy given the level of water quality for any point in time. The linear programming model maximized expected net returns from representative crop enterprises on the basis of a three-year moving average of past actual yields. This means expected yield in the linear programming model was slightly less than actual yield for any particular year. When all improvements in water quality had taken place and the model achieved steady state, the economically optimal allocation of the water resource had been determined. Results from the study indicated that a policy of rapid adoption should be undertaken. In the initial year, a 40 percent leaching fraction was economically feasible on limited acreage. Dryland production then shifted quickly to irrigation as water quality improved. Water use also shifted, moving from a 40 percent to a 20 percent leaching fraction. By the ninth year of the analysis, all adjustment's had occurred and a 10 percent leaching fraction was economically optimal on all irrigated acreage. Due to its profitability and for relative salt tolerance, cotton was the only irrigated activity chosen by the model. An optimal cropping pattern of 55,121 acres of irrigated cotton, 14,437 acres of dryland cotton and 7,728 acres of native pasture was selected by the model under the first scenario. For the second, sc

Zacharias, T.; Taylor, C. R.; Lacewell, R. D.

1980-09-01T23:59:59.000Z

156

The integration of water loop heat pump and building structural thermal storage systems  

SciTech Connect

Commercial buildings often have extensive periods where one space needs cooling and another heating. Even more common is the need for heating during one part of the day and cooling during another in the same spaces. If a building's heating and cooling system could be integrated with the building's structural mass such that the mass can be used to collect, store, and deliver energy, significant energy might be saved. Computer models were developed to simulate this interaction for an existing office building in Seattle, Washington that has a decentralized water-source heat pump system. Metered data available for the building was used to calibrate a base'' building model (i.e., nonintegrated) prior to simulation of the integrated system. In the simulated integration strategy a secondary water loop was manifolded to the main HVAC hydronic loop. tubing in this loop was embedded in the building's concrete floor slabs. Water was routed to this loop by a controller to charge or discharge thermal energy to and from the slabs. The slabs were also in thermal communication with the conditioned spaces. Parametric studies of the building model, using weather data for five other cities in addition to Seattle, predicted that energy can be saved on cooling dominated days. On hot, dry days and during the night the cooling tower can beneficially be used as a free cooling'' source for thermally charging'' the floor slabs using cooled water. Through the development of an adaptive/predictive control strategy, annual HVAC energy savings as large as 30% appear to be possible in certain climates. 8 refs., 13 figs.

Marseille, T.J.; Schliesing, J.S.

1990-09-01T23:59:59.000Z

157

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

Science Conference Proceedings (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

158

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

SciTech Connect

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

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

2013-11-01T23:59:59.000Z

159

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

SciTech Connect

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

Ashdown, BG

2004-08-04T23:59:59.000Z

160

The integration of water loop heat pump and building structural thermal storage systems  

DOE Green Energy (OSTI)

Many commercial buildings need heat in one part and, at the same time, cooling in another part. Even more common is the need for heating during one part of the day and cooling during another in the same spaces. If that energy could be shifted or stored for later use, significant energy might be saved. If a building's heating and cooling subsystems could be integrated with the building's structural mass and used to collect, store, and deliver energy, the energy might be save cost-effectively. To explore this opportunity, researchers at the Pacific Northwest Laboratory (PNL) examined the thermal interactions between the heating, ventilating, and air-conditioning (HVAC) system and the structure of a commercial building. Computer models were developed to simulate the interactions in an existing building located in Seattle, Washington, to determine how these building subsystems could be integrated to improve energy efficiency. The HVAC subsystems in the existing building were modeled. These subsystems consist of decentralized water-source heat pumps (WSHP) in a closed water loop, connected to cooling towers for heat rejection during cooling mode and boilers to augment heating. An initial base case'' computer model of the Seattle building, as-built, was developed. Metered data available for the building were used to calibrate this model to ensure that the analysis would provide information that closely reflected the operation of a real building. The HVAC system and building structure were integrated in the model using the concrete floor slabs as thermal storage media. The slabs may be actively charged during off-peak periods with the chilled water in the loop and then either actively or passively discharged into the conditioned space during peak periods. 21 refs., 37 figs., 17 tabs.

Marseille, T.J.; Schliesing, J.S.

1991-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "agricultural water pumping" 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

The integration of water loop heat pump and building structural thermal storage systems  

SciTech Connect

Many commercial buildings need heat in one part and, at the same time, cooling in another part. Even more common is the need for heating during one part of the day and cooling during another in the same spaces. If that energy could be shifted or stored for later use, significant energy might be saved. If a building's heating and cooling subsystems could be integrated with the building's structural mass and used to collect, store, and deliver energy, the energy might be save cost-effectively. To explore this opportunity, researchers at the Pacific Northwest Laboratory (PNL) examined the thermal interactions between the heating, ventilating, and air-conditioning (HVAC) system and the structure of a commercial building. Computer models were developed to simulate the interactions in an existing building located in Seattle, Washington, to determine how these building subsystems could be integrated to improve energy efficiency. The HVAC subsystems in the existing building were modeled. These subsystems consist of decentralized water-source heat pumps (WSHP) in a closed water loop, connected to cooling towers for heat rejection during cooling mode and boilers to augment heating. An initial base case'' computer model of the Seattle building, as-built, was developed. Metered data available for the building were used to calibrate this model to ensure that the analysis would provide information that closely reflected the operation of a real building. The HVAC system and building structure were integrated in the model using the concrete floor slabs as thermal storage media. The slabs may be actively charged during off-peak periods with the chilled water in the loop and then either actively or passively discharged into the conditioned space during peak periods. 21 refs., 37 figs., 17 tabs.

Marseille, T.J.; Schliesing, J.S.

1991-10-01T23:59:59.000Z

162

Maximizing Gross Margin of a Pumped Storage Hydroelectric Facility Under Uncertainty in Price and Water Inflow.  

E-Print Network (OSTI)

??The operation of a pumped storage hydroelectric facility is subject to uncertainty. This is especially true in todays energy markets. Published models to achieve optimal (more)

Ikudo, Akina

2009-01-01T23:59:59.000Z

163

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

NLE Websites -- All DOE Office Websites (Extended Search)

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

164

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

E-Print Network (OSTI)

The benefits of using a two stage vapor compression heat pump with ammonia water solution circuits (VCHSC) to simultaneously provide chilled water for air conditioning and hot water for various uses are reviewed. The performance results for a two stage VCHSC are summarized. Experimental results indicate that the two stage VCHSC can achieve cooling coefficient of performances as high as 1.04 while pumping heat through a lift of 194F (108C). Comparison is made with a system consisting of a vapor compressor chiller and a gas fired furnace. The basis for comparison being primary energy usage, energy cost and initial cost of the systems. Energy saving at various operating conditions is estimated. In some cases, energy saving could be as high as 31%. Based on the national average energy prices in 1991 and the projected prices for 1995, suitable applications for the two stage VCHSC have been identified.

Rane, M. V.; Radermacher, R.

1992-04-01T23:59:59.000Z

165

Air-to-Water Heat Pumps With Radiant Delivery in Low-Load Homes  

SciTech Connect

Space conditioning represents nearly 50% of average residential household energy consumption, highlighting the need to identify alternative cost-effective, energy-efficient cooling and heating strategies. As homes are better built, there is an increasing need for strategies that are particularly well suited for high performance, low load homes. ARBI researchers worked with two test homes in hot-dry climates to evaluate the in-situ performance of air-to-water heat pump (AWHP) systems, an energy efficient space conditioning solution designed to cost-effectively provide comfort in homes with efficient, safe, and durable operation. Two monitoring projects of test houses in hot-dry climates were initiated in 2010 to test this system. Both systems were fully instrumented and have been monitored over one year to capture complete performance data over the cooling and heating seasons. Results are used to quantify energy savings, cost-effectiveness, and system performance using different operating modes and strategies. A calibrated TRNSYS model was developed and used to evaluate performance in various climate regions. This strategy is most effective in tight, insulated homes with high levels of thermal mass (i.e. exposed slab floors).

Backman, C.; German, A.; Dakin, B.; Springer, D.

2013-12-01T23:59:59.000Z

166

Initial findings: The integration of water loop heat pump and building structural thermal storage systems  

SciTech Connect

This report is one in a series of reports describing research activities in support of the US Department of Energy (DOE) Commercial Building System Integration Research Program. The goal of the program is to develop the scientific and technical basis for improving integrated decision-making during design and construction. Improved decision-making could significantly reduce buildings' energy use by the year 2010. The objectives of the Commercial Building System Integration Research Program are: to identify and quantify the most significant energy-related interactions among building subsystems; to develop the scientific and technical basis for improving energy related interactions in building subsystems; and to provide guidance to designers, owners, and builders for improving the integration of building subsystems for energy efficiency. The lead laboratory for this program is the Pacific Northwest Laboratory. A wide variety of expertise and resources from industry, academia, other government entities, and other DOE laboratories are used in planning, reviewing and conducting research activities. Cooperative and complementary research, development, and technology transfer activities with other interested organizations are actively pursued. In this report, the interactions of a water loop heat pump system and building structural mass and their effect on whole-building energy performance is analyzed. 10 refs., 54 figs., 1 tab.

Marseille, T.J.; Johnson, B.K.; Wallin, R.P.; Chiu, S.A.; Crawley, D.B.

1989-01-01T23:59:59.000Z

167

Water, Agriculture + settlement design in the arid lower Colorado River Basin : 3 new models  

E-Print Network (OSTI)

This thesis investigates possible conversions of an increasingly unviable type of irrigated agricultural landscape, seen under the influences of three simultaneous processes: urban growth, change of cropping practice and ...

Wirth, Timo Matti

2011-01-01T23:59:59.000Z

168

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

SciTech Connect

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

2010-09-01T23:59:59.000Z

169

Spinning Reserve from Pump Load: A Technical Findings Report to the California Department of Water Resources  

Science Conference Proceedings (OSTI)

The Oak Ridge National Laboratory (ORNL), at the request of the California Energy Commission and the U.S. Department of Energy, is investigating opportunities for electrical load to provide the ancillary service of spinning reserve to the electric grid. The load would provide this service by stopping for a short time when there is a contingency on the grid such as a transmission line or generator outage. There is a possibility that a significant portion of the California Independent System Operator's (CAISO's) spinning reserve requirement could be supplied from the California Department of Water Resources (CDWR) pumping load. Spinning reserve has never been supplied from load before, and rule changes would be needed to allow it. In this report, we are presenting technical findings on the possibility of supplying spinning reserve from pumping system load. In parallel, we are pursuing the needed rule changes with the North American Electric Reliability Council (NERC), the Federal Energy Regulatory Commission (FERC), the Western Electricity Coordinating Council (WECC), and the CAISO. NERC and FERC have agreed that they have no prohibition against supplying spinning reserve from load. The WECC Minimum Operability Reliability Criteria working group has agreed that the concept should be considered, and they are presently discussing the needed tariff and rule changes. Presently, spinning reserve is provided by generation that is actually spinning but is operating at low power levels and can be ramped up quickly to provide reserve power. In a sense, this is an inefficient and environmentally unfriendly way of providing reserves because it requires the generator to operate at a low power level that may be inefficient and may discharge more pollutants per kW than operating at rated power. It would be better if this generation capacity were in a position to bid into the energy market. Providing an additional supply of spinning reserve would tend to reduce prices for both reserves and the regular electric energy market. The CAISO is presently in the process of redesigning its market rules for ancillary services. The time is right to pursue this opportunity to supply spinning reserve from load. It is our hope that the CDWR will endorse this recommendation. ORNL will then work with FERC, NERC, WECC, and the CAISO to obtain the needed rule changes. This project would provide the CDWR with another option in the complex process of obtaining its energy at the lowest possible cost, while at the same time providing more flexibility to the ISO and relief to the energy market. After this project is implemented in California, we hope that the practice spreads across the nation, allowing much more flexibility in energy markets and increasing the availability of reserve services.

Kirby, BJ

2005-05-06T23:59:59.000Z

170

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

SciTech Connect

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

171

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

SciTech Connect

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

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

2012-01-01T23:59:59.000Z

172

SIMULATION AND VALIDATION OF HYBRID GROUND SOURCE AND WATER-LOOP HEAT PUMP  

E-Print Network (OSTI)

.3 Plot of loads, operating heat pumps, and cooling tower setpoint for an office building in Albuquerque.20 Office building loads for Chicago.................................................................... 112 4.21 Office building loads for Houston

173

Valuing Groundwater Services and Water Portfolio in Irrigated Agriculture with a Hedonic Pricing Model  

E-Print Network (OSTI)

and A.C. Fisher. 2007. Water Availability, Degree Days, andAn Overview. Regional Water Quality Control Board CentralRegion. 2006. California Water Boards. State of California.

Mukherjee, Monobina

2013-01-01T23:59:59.000Z

174

Economic Potential for Agriculture Water-Saving Using Alternative Irrigation Techniques  

E-Print Network (OSTI)

four percent of aggregate water intake in the approximation,or reused) to total intake water. The DWR data give a quiteIntake of \\~ater by CalHorn:a (million acre ~lantlfacttlring feet) Firms Water

Vaux, Henry James Jr.; Marsh, Albert W

1980-01-01T23:59:59.000Z

175

Alternative backing up pump for turbomolecular pumps  

DOE Patents (OSTI)

As an alternative to the use of a mechanical backing pump in the application of wide range turbomolecular pumps in ultra-high and extra high vacuum applications, palladium oxide is used to convert hydrogen present in the evacuation stream and related volumes to water with the water then being cryo-pumped to a low pressure of below about 1.e.sup.-3 Torr at 150.degree. K. Cryo-pumping is achieved using a low cost Kleemenco cycle cryocooler, a somewhat more expensive thermoelectric cooler, a Venturi cooler or a similar device to achieve the required minimization of hydrogen partial pressure.

Myneni, Ganapati Rao (Yorktown, VA)

2003-04-22T23:59:59.000Z

176

Downscaled climate change impacts on agricultural water resources in Puerto Rico  

E-Print Network (OSTI)

Water Resource Data, Puerto Rico and the US Virgin Islands,WATER RESOUCES IN PUERTO RICO Eric W. Harmsen 1 , Norman L.Engineering, Univ. of Puerto Rico Mayagez Campus, email:

Harmsen, E.W.

2010-01-01T23:59:59.000Z

177

Industrial and Agricultural Production Efficiency Program | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Industrial and Agricultural Production Efficiency Program Industrial and Agricultural Production Efficiency Program Industrial and Agricultural Production Efficiency Program < Back Eligibility Agricultural Industrial Savings Category Other Heating & Cooling Commercial Heating & Cooling Heating Home Weatherization Commercial Weatherization Cooling Manufacturing Sealing Your Home Ventilation Heat Pumps Appliances & Electronics Commercial Lighting Lighting Insulation Design & Remodeling Water Heating Maximum Rebate Custom capital projects: $0.25/kWh, up to 50% of cost; $2/Therm, up to 50% of project cost Custom operation and maintenance projects: $0.08/kWh or $0.40/Therm, up to 50% of project cost Lighting projects: custom lighting incentives get 35% of project cost; prescriptive incentives also available. Total incentive capped at

178

Agricultural Energy Efficiency Program (New York) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Agricultural Energy Efficiency Program (New York) Agricultural Energy Efficiency Program (New York) Agricultural Energy Efficiency Program (New York) < Back Eligibility Agricultural Savings Category Other Heating & Cooling Commercial Heating & Cooling Heating Cooling Appliances & Electronics Heat Pumps Commercial Lighting Lighting Manufacturing Water Heating Maximum Rebate $250,000 per farm Program Info Funding Source System Benefits Charge (SBC) Expiration Date 12/01/2015 State New York Program Type State Rebate Program Rebate Amount General: 75% of project costs Energy Audits: up to $2,500 (cost share may be required for audit costs exceeding this amount) Provider New York State Energy Research and Development Authority The New York State Energy Research and Development Authority (NYSERDA) offers incentives for electric and natural gas efficiency improvements made

179

Best Practice for Energy Efficient Cleanrooms: Variable Speed Pumping  

E-Print Network (OSTI)

e.g. , chilled water pumps, or condenser water pumps, systemCooling tower and condenser water systems ? Free cooling ?of chilled water and condenser pumps, along with chiller

Xu, Tengfang

2005-01-01T23:59:59.000Z

180

NREL: Learning - Pumped Hydropower  

NLE Websites -- All DOE Office Websites (Extended Search)

Pumped Hydropower Pumped Hydropower Pumped hydro facilities use off-peak electricity to pump water from a lower reservoir into one at a higher elevation. When the water stored in the upper reservoir is released, it is passed through hydraulic turbines to generate electricity. The off-peak electrical energy used to pump the water up hill can be stored indefinitely as gravitational energy in the upper reservoir. Thus, two reservoirs in combination can be used to store electrical energy for a long period of time, and in large quantities. Utilities generally prefer to operate large coal and nuclear power stations at full power all the time (referred to as "baseload generation"), so in the middle of the night, these plants often produce more power than is needed. Pumped hydro energy storage can be used to smooth out the demand

Note: This page contains sample records for the topic "agricultural water pumping" 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

Treated Wastewater for Irrigated Agriculture in the Jordan Valley - Analysing Water allocation and Willingness to Pay for reused water.  

E-Print Network (OSTI)

??Jordan Valley is an important regional supplier of crops where much of the freshwater resources are consumed. A Water Reuse Index shows that there is (more)

Alfarra, Amani

2010-01-01T23:59:59.000Z

182

Efficient booster pump placement in water networks using graph theoretic principles  

Science Conference Proceedings (OSTI)

Municipal water delivery networks face increasing demands due to population growth. We focus on enhancing a water utility's infrastructure to meet its growing demands in a cost effective manner. Specifically, we consider the problem of placing pressure ...

I. Narayanan; V. Sarangan; A. Vasan; A. Srinivasan; A. Sivasubramaniam; B. S. Murt; S. Narasimhan

2012-06-01T23:59:59.000Z

183

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

E-Print Network (OSTI)

Products or systems that heat, cool and heat domestic water, which are also referred to as integrated systems, have been available for several years. The concept is simple and appeals to consumers. This paper presents methods for evaluating the potential savings by using an integrated system that heats water by desuperheating discharge gas in the refrigeration cycle. The methods may be applied for any specific location, and their accuracy will depend on the accuracy of building loads and water usage estimates. Power demand can also be affected by electric water heaters. The methods presented demonstrate how integrated systems can be of value in reducing daily summertime peaks.

Cawley, R.

1992-05-01T23:59:59.000Z

184

Integrated Agricultural Technologies Demonstrations  

Science Conference Proceedings (OSTI)

Major challenges currently face California's agricultural community. Increasingly stringent environmental and regulatory controls mandate changes in the use and disposal of agricultural chemicals, require the more aggressive management of farm wastes, and impose new responsibilities for water use. This program demonstrated a number of energy efficient and environmentally friendly technologies designed to address these issues.

2002-08-02T23:59:59.000Z

185

The Quality of Fog Water Collected for Domestic and Agricultural Use in Chile  

Science Conference Proceedings (OSTI)

One exciting new application of meteorology is the prospect of using high-elevation fogs as an and land's water resource. This has now become reality in northern Chile where a pilot project has used 50 fog collectors to generate an average of ...

Robert S. Schemenauer; Pilar Cereceda

1992-03-01T23:59:59.000Z

186

THE WATER VAPOR SPECTRUM OF APM 08279+5255: X-RAY HEATING AND INFRARED PUMPING OVER HUNDREDS OF PARSECS  

SciTech Connect

We present the rest-frame 200-320 {mu}m spectrum of the z = 3.91 quasar APM 08279+5255, obtained with Z-Spec at the Caltech Submillimeter Observatory. In addition to the J = 8 {yields} 7 to J = 13 {yields} 12 CO rotational transitions which dominate the CO cooling, we find six transitions of water originating at energy levels ranging up to 643 K. Most are first detections at high redshift, and we have confirmed one transition with CARMA. The CO cooling is well described by our X-ray dominated region (XDR) model, assuming L{sub 1-100keV} {approx} 1 Multiplication-Sign 10{sup 46} erg s{sup -1}, and that the gas is distributed over a 550-pc size scale, as per the now-favored {mu} = 4 lensing model. The total observed cooling in water corresponds to 6.5 Multiplication-Sign 10{sup 9} L{sub Sun }, comparable to that of CO. We compare the water spectrum with that of Mrk 231, finding that the intensity ratios among the high-lying lines are similar, but with a total luminosity scaled up by a factor of {approx}50. Using this scaling, we estimate an average water abundance relative to H{sub 2} of 1.4 Multiplication-Sign 10{sup -7}, a good match to the prediction of the chemical network in the XDR model. As with Mrk 231, the high-lying water transitions are excited radiatively via absorption in the rest-frame far-infrared, and we show that the powerful dust continuum in APM 08279+5255 is more than sufficient to pump this massive reservoir of warm water vapor.

Bradford, C. M.; Bock, J. J.; Naylor, B. J.; Nguyen, H. T.; Zmuidzinas, J. [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 (United States); Bolatto, A. D. [Department of Astronomy, University of Maryland, College Park, MD 20742-2421 (United States); Maloney, P. R.; Aguirre, J. E.; Glenn, J.; Kamenetzky, J. [Center for Astrophysics and Space Astronomy, University of Colorado, Boulder, CO 80303 (United States); Lupu, R.; Scott, K. [Department of Physics, University of Pennsylvania, Philadelphia, PA 19104 (United States); Matsuhara, H. [Institute for Space and Astronautical Science, Japan Aerospace and Exploration Agency, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara 252-5210 (Japan); Murphy, E. J. [Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101 (United States)

2011-11-10T23:59:59.000Z

187

Pumped Hydro | Open Energy Information  

Open Energy Info (EERE)

search Introduction caption:Pumped Storage diagram at TVA's Racoon mountain Pumped Hydro is an energy storage technique where water is used as a medium in order to store...

188

Jet pump feeds corrosion inhibitor in Russian waterflood  

SciTech Connect

The Russian company Orenburgneft JSC tested a proportioning jet pump for injecting corrosion inhibitor into the water injection system at its Tananykskoye waterflood. The jet pump has no moving parts and, therefore, provides an hermetic system with zero emissions of pumped and working fluid. This pump reduces weight, dimensions, and costs compared to mechanical pumps. The paper describes jet pumping and the pump design.

Yuden, I.S. [JKX Oil and Gas, Guildford (United Kingdom); Sazanov, Y.A.; Yeliseev, V.N.; Malov, B.A. [Orenburgneft JSC, Moscow (Russian Federation)

1997-01-27T23:59:59.000Z

189

The energy-efficiency benefits of pumps-scheduling optimization for potable water supplies  

Science Conference Proceedings (OSTI)

Water utilities across the developed world have been installing and operating telemetry and SCADA (supervisory control and data acquisition) facilities for at least three decades. They have amassed substantial quantities of historical operational data ...

S. M. Bunn; L. Reynolds

2009-05-01T23:59:59.000Z

190

Equilibrium Response of Ocean Deep-Water Circulation to Variations in Ekman Pumping and Deep-Water Sources  

Science Conference Proceedings (OSTI)

A multilayer ocean model that is physically simple and computationally efficient is developed for studies of competition and interaction among deep-water sources in determining ocean circulation. The model is essentially geostrophic and ...

F. L. Yin; I. Y. Fung; C. K. Chu

1992-10-01T23:59:59.000Z

191

Pumping Fluid Condensation in Oil Diffusion Pumps  

Science Conference Proceedings (OSTI)

Condensation conditions of the motive fluid in an oil diffusion pump are considered with particular attention to the backstreaming problem. The backstreaming rate is correlated with the temperature of the cold caps surrounding the pump nozzle and it is demonstrated that an upper temperature limit exists near 200?F where such devices cease to function effectively. The effect of oleophobic surfaces on cold caps and baffles is discussed. Conditions existing at the inlet of diffusion pumps and in baffles do not warrant attempts to introduce dropwise condensation. The condensation coefficient of pumping vapor at the temperature of the water cooled wall and with the flow rates used at the top nozzle appears to be very close to unity. The usefulness of creep barriers with modern pumping fluids and trap designs is judged to be questionable.

M. H. Hablanian

1972-01-01T23:59:59.000Z

192

Downscaled climate change impacts on agricultural water resources in Puerto Rico  

SciTech Connect

The purpose of this study is to estimate reference evapotranspiration (ET{sub o}), rainfall deficit (rainfall - ET{sub o}) and relative crop yield reduction for a generic crop under climate change conditions for three locations in Puerto Rico: Adjuntas, Mayaguez, and Lajas. Reference evapotranspiration is estimated by the Penman-Monteith method. Rainfall and temperature data were statistically downscaled and evaluated using the DOE/NCAR PCM global circulation model projections for the B1 (low), A2 (mid-high) and A1fi (high) emission scenarios of the Intergovernmental Panel on Climate Change Special Report on Emission Scenarios. Relative crop yield reductions were estimated from a function dependent water stress factor, which is a function of soil moisture content. Average soil moisture content for the three locations was determined by means of a simple water balance approach. Results from the analysis indicate that the rainy season will become wetter and the dry season will become drier. The 20-year mean 1990-2010 September rainfall excess (i.e., rainfall - ET{sub o} > 0) increased for all scenarios and locations from 149.8 to 356.4 mm for 2080-2100. Similarly, the 20-year average February rainfall deficit (i.e., rainfall - ET{sub o} < 0) decreased from a -26.1 mm for 1990-2010 to -72.1 mm for the year 2080-2100. The results suggest that additional water could be saved during the wet months to offset increased irrigation requirements during the dry months. Relative crop yield reduction did not change significantly under the B1 projected emissions scenario, but increased by approximately 20% during the summer months under the A1fi emissions scenario. Components of the annual water balance for the three climate change scenarios are rainfall, evapotranspiration (adjusted for soil moisture), surface runoff, aquifer recharge and change in soil moisture storage. Under the A1fi scenario, for all locations, annual evapotranspiration decreased owing to lower soil moisture, surface runoff decreased, and aquifer recharge increased. Aquifer recharge increased at all three locations because the majority of recharge occurs during the wet season and the wet season became wetter. This is good news from a groundwater production standpoint. Increasing aquifer recharge also suggests that groundwater levels may increase and this may help to minimize saltwater intrusion near the coasts as sea levels increase, provided that groundwater use is not over-subscribed.

Harmsen, E.W.; Miller, N.L.; Schlegel, N.J.; Gonzalez, J.E.

2009-04-01T23:59:59.000Z

193

Generation Maintenance Applications Center: Maintenance Guide for Horizontal Split-Casing Closed Cooling Water Pumps in Combined-Cyc le Combustion-Turbine Plants  

Science Conference Proceedings (OSTI)

This report identifies the failure modes and general maintenance requirements for horizontal split-casing closed cooling water pumps used in utility combined-cycle combustion-turbine power plants. Information in this report was provided and reviewed by member utilities. Manufacturers information and Electric Power Research Institute (EPRI) database information was used as a basis for the ...

2012-11-21T23:59:59.000Z

194

Illustrative Calculation of Economics for Heat Pump and "Grid...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Illustrative Calculation of Economics for Heat Pump and "Grid-Enabled" Water Heaters Illustrative Calculation of Economics for Heat Pump and "Grid-Enabled" Water Heaters Rate...

195

Downscaled climate change impacts on agricultural water resources in Puerto Rico  

Science Conference Proceedings (OSTI)

The purpose of this study is to estimate reference evapotranspiration (ET{sub o}), rainfall deficit (rainfall - ET{sub o}) and relative crop yield reduction for a generic crop under climate change conditions for three locations in Puerto Rico: Adjuntas, Mayaguez, and Lajas. Reference evapotranspiration is estimated by the Penman-Monteith method. Rainfall and temperature data were statistically downscaled and evaluated using the DOE/NCAR PCM global circulation model projections for the B1 (low), A2 (mid-high) and A1fi (high) emission scenarios of the Intergovernmental Panel on Climate Change Special Report on Emission Scenarios. Relative crop yield reductions were estimated from a function dependent water stress factor, which is a function of soil moisture content. Average soil moisture content for the three locations was determined by means of a simple water balance approach. Results from the analysis indicate that the rainy season will become wetter and the dry season will become drier. The 20-year mean 1990-2010 September rainfall excess (i.e., rainfall - ET{sub o} > 0) increased for all scenarios and locations from 149.8 to 356.4 mm for 2080-2100. Similarly, the 20-year average February rainfall deficit (i.e., rainfall - ET{sub o} crop yield reduction did not change significantly under the B1 projected emissions scenario, but increased by approximately 20% during the summer months under the A1fi emissions scenario. Components of the annual water balance for the three climate change scenarios are rainfall, evapotranspiration (adjusted for soil moisture), surface runoff, aquifer recharge and change in soil moisture storage. Under the A1fi scenario, for all locations, annual evapotranspiration decreased owing to lower soil moisture, surface runoff decreased, and aquifer recharge increased. Aquifer recharge increased at all three locations because the majority of recharge occurs during the wet season and the wet season became wetter. This is good news from a groundwater production standpoint. Increasing aquifer recharge also suggests that groundwater levels may increase and this may help to minimize saltwater intrusion near the coasts as sea levels increase, provided that groundwater use is not over-subscribed.

Harmsen, E.W.; Miller, N.L.; Schlegel, N.J.; Gonzalez, J.E.

2009-04-01T23:59:59.000Z

196

A recursive programming analysis of water conservation in Arizona agriculture : a study of the Phoenix active management area .  

E-Print Network (OSTI)

??Arizona agriculture faces many changes in the near future. One of the most imminent changes will come from the enactment of the 1980 Arizona Groundwater (more)

Lierman, Wally Kent.

1983-01-01T23:59:59.000Z

197

Optimal (short-term) pump schedule detection for water distribution systems by neutral evolutionary search  

Science Conference Proceedings (OSTI)

The application of neutrality is a straightforward tool to preserve population diversity since it allows the genotype (on the represented search space) to be changed without affecting the corresponding fitness. To implement neutrality the literature ... Keywords: Evolutionary computing, Neutrality, Scheduling, Water distribution systems

IstvN Selek; JZsef Gergely Bene; Csaba Hs

2012-08-01T23:59:59.000Z

198

AN AMMONIA-WATER ABSORPTION-HIAT-PUMP CYCLE Donald Kuhlenschmidt, Member ASHRAE  

E-Print Network (OSTI)

. Merrick, Member ASHRAE ABSTRACT The scate-of-art in ammonia-water absorption cooling has been applied. Reversible absorption cycles for heating and cooling are possible but with additional cost and complexity concentration change making possible the use of a solution-cooled absorber wherin some heat of absorption can

Oak Ridge National Laboratory

199

Furrow Diking Technology for Agricultural Water Conservation and its Impact on Crop Yields in Texas  

E-Print Network (OSTI)

Furrow diking is a practical, efficient and low-cost technique to conserve water and increase crop yields. Improvements in diker design and the increased use of herbicides have resulted in the rapid spread of furrow diking in the Texas High Plains and other regions. To quantify the long-term effects of diking on crop yields, a computer simulation approach was used. Three crop models for sorghum, corn and cotton were combined with surface runoff hydrology algorithms, based on the USDA-SCS curve number methodology. The combination models called SORDIKE, CORDIKE and COTDIKE were run to determine the effects of conserving the runoff (by diking) on crop yields. Three scenarios of not diking, diking in the growing season, and diking all year were simulated. Daily weather data for 25 years from five Texas regions were used for the analyses. Depending on the location, furrow diking in the growing season increased average annual sorghum yields by 320 to 570 kg/ha, corn yields by 180 to 570 kg/ha, and cotton lint yields by 10 to 20 kg/ha. Diking the land throughout the year increased mean annual yields by 440 to 1080 kg/ha of sorghum, 210 to 800 kg/ha of corn and 10 to 30 kg/ha of cotton lint. The study indicated that furrow diking can be a valuable management practice for about 3.4 million ha of cropped area in the semi-arid and sub-humid regions of Texas. The practice may be useful in other areas also, to mitigate the effects of short duration moisture stress on crop yields.

Krishna, J. Hari; Arkin, Gerald F.

1988-07-01T23:59:59.000Z

200

PUMP CONSTRUCTION  

DOE Patents (OSTI)

A pump which utilizes the fluid being pumped through it as its lubricating fluid is described. This is achieved by means of an improved bearing construction in a pump of the enclosed or canned rotor type. At the outlet end of the pump, adjacent to an impeller mechanism, there is a bypass which conveys some of the pumped fluid to a chamber at the inlet end of the pump. After this chamber becomes full, the pumped fluid passes through fixed orifices in the top of the chamber and exerts a thrust on the inlet end of the pump rotor. Lubrication of the rotor shaft is accomplished by passing the pumped fluid through a bypass at the outlet end of the rotor shaft. This bypass conveys Pumped fluid to a cooling means and then to grooves on the surface of the rotor shait, thus lubricating the shaft.

Strickland, G.; Horn, F.L.; White, H.T.

1960-09-27T23:59:59.000Z

Note: This page contains sample records for the topic "agricultural water pumping" 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

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

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

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

202

Microhydropower Turbines, Pumps, and Waterwheels  

Energy.gov (U.S. Department of Energy (DOE))

A microhydropower system needs a turbine, pump, or waterwheel to transform the energy of flowing water into rotational energy, which is then converted into electricity.

203

Geothermal heat pump analysis article  

U.S. Energy Information Administration (EIA)

heat pump transfers heat from the ground or ground water to provide space heating. In the summer, the heat transfer process is reversed; the ground or groundwater

204

Air-To-Water Heat Pumps with Radiant Delivery in Low Load Homes: Tucson, Arizona and Chico, California (Fact Sheet)  

SciTech Connect

Space conditioning represents nearly 50% of average residential household energy consumption, highlighting the need to identify alternative cost-effective, energy-efficient cooling and heating strategies. As homes are better built, there is an increasing need for strategies that are particularly well suited for high performance, low load homes. ARBI researchers worked with two test homes in hot-dry climates to evaluate the in-situ performance of air-to-water heat pump (AWHP) systems, an energy efficient space conditioning solution designed to cost-effectively provide comfort in homes with efficient, safe, and durable operation. Two monitoring projects of test houses in hot-dry climates were initiated in 2010 to test this system. Both systems were fully instrumented and have been monitored over one year to capture complete performance data over the cooling and heating seasons. Results are used to quantify energy savings, cost-effectiveness, and system performance using different operating modes and strategies. A calibrated TRNSYS model was developed and used to evaluate performance in various climate regions. This strategy is most effective in tight, insulated homes with high levels of thermal mass (i.e. exposed slab floors).

Not Available

2013-11-01T23:59:59.000Z

205

Field and Laboratory Study of a Ground-Coupled Water Source Heat Pump with an Integral Enthalpy Exchange System for Classrooms  

E-Print Network (OSTI)

School classroom space-conditioning equipment in hot and humid climates is often excessively burdened by the requirement to dehumidify incoming air to maintain proper thermal comfort and air quality. To that end, application of new or modified technologies is needed to increase the dehumidification abilities of equipment without compromising energy efficiency or the need for fresh ventilation air. To study the effectiveness of integrated heat pump and enthalpy exchange equipment, a nominal 4-ton water-source heat pump, coupled with a geothermal water loop and incorporating a forced fresh-air enthalpy exchange system was installed in a typical middle school classroom in Oak Ridge, Tennessee. This project is a joint effort among Oak Ridge School District, Tennessee Valley Authority, Energy Office of the State of Tennessee, and Oak Ridge National Laboratory. The retrofit classroom, along with a similar baseline classroom (employing a water source heat pump supplied by a boiler/cooling tower loop), were instrumented with an Internet-based system to control and monitor performance, efficiency, and a variety of air states. Those include classroom air, outdoor air, semi-conditioned fresh air, and supply air. Particular attention was dedicated to the humidity content and the carbon dioxide content of conditioned space (classroom) air and to the intake rate of forced fresh air. This field study builds on a previous laboratory study of a water-source heat pump coupled to an enthalpy recovery system. The laboratory work showed good potential for reducing the moisture load from forced ventilation air. At simulated outdoor conditions of 90F (32.2C) and 90% RH, the enthalpy recovery wheel in the nominal 2-ton system was able to capture and exhaust 9.9 lb of moisture that would otherwise have to be handled solely by the cooling coil.

Domitrovic, R.; Hayzen, G. J.; Johnson, W. S.; Chen, F. C.

2002-01-01T23:59:59.000Z

206

ELECTROMAGNETIC PUMP  

DOE Patents (OSTI)

This patent reiates to electromagnetic pumps for electricity-conducting fluids and, in particular, describes several modifications for a linear conduction type electromagnetic interaction pump. The invention resides in passing the return conductor for the current traversing the fiuid in the duct back through the gap in the iron circuit of the pump. Both the maximum allowable pressure and the efficiency of a linear conduction electromagnetic pump are increased by incorporation of the present invention.

Pulley, O.O.

1954-08-17T23:59:59.000Z

207

Measured Impact on Space Conditioning Energy Use in a Residence Due to Operating a Heat Pump Water Heater inside the Conditioned Space  

Science Conference Proceedings (OSTI)

The impact on space conditioning energy use due to operating a heat pump water heater (HPWH) inside the conditioned space is analyzed based on 2010-2011 data from a research house with simulated occupancy and hot water use controls. The 2700 ft2 (345 m2) house is located in Oak Ridge, TN (mixed-humid climate) and is equipped with a 50 gallon (189 l) HPWH that provided approximately 55 gallons/d (208 l/d) of hot water at 120 F (46 C) to the house during the test period. The HPWH has been operated every other week from December 2010 through November 2011 in two modes; a heat pump only mode, and a standard mode that utilizes 15355 Btu/hr (4500 W) resistance heating elements. The energy consumption of the air-source heat pump (ASHP) that provides space conditioning for the house is compared for the two HPWH operating modes with weather effects taken into account. Impacts during the heating and cooling seasons are compared.

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

2012-01-01T23:59:59.000Z

208

Absorption Heat Pump Basics | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Absorption Heat Pump Basics Absorption Heat Pump Basics Absorption Heat Pump Basics August 19, 2013 - 11:11am Addthis Absorption heat pumps are essentially air-source heat pumps driven not by electricity, but by a heat source such as natural gas, propane, solar-heated water, or geothermal-heated water. Because natural gas is the most common heat source for absorption heat pumps, they are also referred to as gas-fired heat pumps. There are also absorption coolers available that work on the same principal, but are not reversible and cannot serve as a heat source. These are also called gas-fired coolers. How Absorption Heat Pumps Work Residential absorption heat pumps use an ammonia-water absorption cycle to provide heating and cooling. As in a standard heat pump, the refrigerant (in this case, ammonia) is condensed in one coil to release its heat; its

209

Absorption Heat Pumps | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Absorption Heat Pumps Absorption Heat Pumps Absorption Heat Pumps June 24, 2012 - 2:11pm Addthis Absorption heat pumps are essentially air-source heat pumps driven not by electricity, but by a heat source such as natural gas, propane, solar-heated water, or geothermal-heated water. Because natural gas is the most common heat source for absorption heat pumps, they are also referred to as gas-fired heat pumps. There are also absorption (or gas-fired) coolers available that work on the same principle. Unlike some absorption heat pumps, however, these are not reversible and cannot serve as a heat source. Residential absorption heat pumps use an ammonia-water absorption cycle to provide heating and cooling. As in a standard heat pump, the refrigerant (in this case, ammonia) is condensed in one coil to release its heat; its

210

Absorption Heat Pumps | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Absorption Heat Pumps Absorption Heat Pumps Absorption Heat Pumps June 24, 2012 - 2:11pm Addthis Absorption heat pumps are essentially air-source heat pumps driven not by electricity, but by a heat source such as natural gas, propane, solar-heated water, or geothermal-heated water. Because natural gas is the most common heat source for absorption heat pumps, they are also referred to as gas-fired heat pumps. There are also absorption (or gas-fired) coolers available that work on the same principle. Unlike some absorption heat pumps, however, these are not reversible and cannot serve as a heat source. Residential absorption heat pumps use an ammonia-water absorption cycle to provide heating and cooling. As in a standard heat pump, the refrigerant (in this case, ammonia) is condensed in one coil to release its heat; its

211

Survey of hybrid solar heat pump drying systems  

Science Conference Proceedings (OSTI)

Solar drying is in practice since the ancient time for preservation of food and agriculture crops. The objective of most drying processes is to reduce the moisture content of the product to a specified value. Solar dryers used in agriculture for food ... Keywords: coefficient of performance (COP), direct expansion SAHD, drying chamber, heat pump, solar assisted heat pumps dryer (SAHPD), solar fraction

R. Daghigh; K. Sopian; M. H. Ruslan; M. A. Alghoul; C. H. Lim; S. Mat; B. Ali; M. Yahya; A. Zaharim; M. Y. Sulaiman

2009-02-01T23:59:59.000Z

212

Indexes of pumps for oil field pumping units  

Science Conference Proceedings (OSTI)

As reported previously, a series of oil field pumping units has been developed with power outputs of 125, 250, 500, and 1000 kW, designed for injecting working fluids in cementing operations in oil and gas wells, hydraulic fracturing of formations, washing out sand plugs, and other production operations. The units are designed for the use of three-plunger pumps with individual power outputs of 125 or 500 kW. In the 250- and 1000-kW units, two such pumps are used. The 1000-kW pumping unit serves mainly for deep-penetration hydraulic fracturing of formations, and also for fracturing deep formations. The hydraulic fracturing process does not require the use of units with two pumps; this has been demonstrated by experience, both here and in other countries. All units intended for use in hydraulic fracturing are built with a single pump, transmission, and drive. Pumping units for well cementing must have two pumps that will give a high delivery rate. At the start of the operation, a single pump can be used to feed water into the cement mixer, with the second pump used to transfer the cement slurry to the well. Then both pumps are connected to the slurry injection line. The operation of these pumps is described.

Ibragimov, E.S.

1995-07-01T23:59:59.000Z

213

Coast Electric Power Association - Heat Pump and Weatherization...  

Open Energy Info (EERE)

CaulkingWeather-stripping, Doors, DuctAir sealing, Heat pumps, Water Heaters, Windows, Geothermal Heat Pumps, Generators Active Incentive No Incentive Inactive Date 0803...

214

Geothermal Heat Pumps Deliver Big Savings for Federal Facilities...  

NLE Websites -- All DOE Office Websites (Extended Search)

Energy Efficiency and Renewable Energy, and the authoring national laboratory. Geothermal heat pump surface water loops. Geothermal Heat Pumps Deliver Big Savings for Federal...

215

Agriculture, technology, and conflict  

E-Print Network (OSTI)

Conflict and agriculture have a long, shared history. The purpose of this research is to look at the relationships between agriculture, agricultural technologies, and conflict during current and recent conflicts, large scale and localized. Agriculture and its related technologies are often affected by conflict, but rarely acknowledged as a cause or solution to conflict. Literature reviews in six topic areas illustrate various facets of the relationship between agriculture and conflict. Research conducted in Santa Cruz del Quich, Guatemala illustrates the ways farmers were impacted by the countrys civil war. It also examines farmer survival strategies during the war, and reveals the presence of minor localized conflict over water resources. Conflict over land is not a major concern at present. Market access for inputs and outputs are shown to have been a problem for a number of farmers during the civil war. The poverty of Santa Cruz farmers indicates that much could be gained by rural development. Research is unable to support the hypotheses that agricultural technologies have prevented or caused conflict in Santa Cruz del Quich, or that they have played a large role in recovery from the countrys civil war. The author recommends that future research be undertaken in regions with a diverse set of agricultural technologies, and/or a recent history of significant technological change in agriculture. Policy recommendations include providing secure access to markets during war time, increasing capacity for home-based rural production, and continuing research into resilient crops. Finally, the author suggests that the responsible decision to develop, adopt, or introduce an agricultural technology must take into account the social consequences of that decision, including how the new technology may alleviate or contribute to conflict.

Zilverberg, Cody John

2007-05-01T23:59:59.000Z

216

Tips: Heat Pumps | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Heat Pumps Heat Pumps Tips: Heat Pumps June 24, 2013 - 5:48pm Addthis Heat pumps can be a cost-effective choice in moderate climates, especially if you heat your home with electricity. Heat pumps can be a cost-effective choice in moderate climates, especially if you heat your home with electricity. Heat pumps are the most efficient form of electric heating in moderate climates. Because they move heat rather than generate heat, heat pumps can provide equivalent space conditioning at as little as one quarter of the cost of operating conventional heating or cooling appliances. A heat pump does double duty as a central air conditioner by collecting the heat inside your house and pumping it outside. There are three types of heat pumps: air-to-air, water source, and geothermal. They collect heat from the air, water, or ground outside your

217

NORMETEX PUMP ALTERNATIVES STUDY  

SciTech Connect

A mainstay pump for tritium systems, the Normetex scroll pump, is currently unavailable because the Normetex company went out of business. This pump was an all-metal scroll pump that served tritium processing facilities very well. Current tritium system operators are evaluating replacement pumps for the Normetex pump and for general used in tritium service. An all-metal equivalent alternative to the Normetex pump has not yet been identified. 1. The ideal replacement tritium pump would be hermetically sealed and contain no polymer components or oils. Polymers and oils degrade over time when they contact ionizing radiation. 2. Halogenated polymers (containing fluorine, chlorine, or both) and oils are commonly found in pumps. These materials have many properties that surpass those of hydrocarbon-based polymers and oils, including thermal stability (higher operating temperature) and better chemical resistance. Unfortunately, they are less resistant to degradation from ionizing radiation than hydrocarbon-based materials (in general). 3. Polymers and oils can form gaseous, condensable (HF, TF), liquid, and solid species when exposed to ionizing radiation. For example, halogenated polymers form HF and HCl, which are extremely corrosive upon reaction with water. If a pump containing polymers or oils must be used in a tritium system, the system must be designed to be able to process the unwanted by-products. Design features to mitigate degradation products include filters and chemical or physical traps (eg. cold traps, oil traps). 4. Polymer components can work in tritium systems, but must be replaced regularly. Polymer components performance should be monitored or be regularly tested, and regular replacement of components should be viewed as an expected normal event. A radioactive waste stream must be established to dispose of used polymer components and oil with an approved disposal plan developed based on the facility location and its regulators. Polymers have varying resistances to ionizing radiation - aromatic polymers such as polyimide Vespel (TM) and the elastomer EPDM (ethylene propylene diene monomer) have been found to be more resistant to degradation in tritium than other polymers. This report presents information to help select replacement pumps for Normetex pumps in tritium systems. Several pumps being considered as Normetex replacement pumps are discussed.

Clark, Elliot A.

2013-04-25T23:59:59.000Z

218

Pressure charged airlift pump  

DOE Patents (OSTI)

A pumping system is described for pumping fluids, such as water with entrained mud and small rocks, out of underground cavities such as drilled wells, which can effectively remove fluids down to a level very close to the bottom of the cavity and which can operate solely by compressed air pumped down through the cavity. The system utilizes a subassembly having a pair of parallel conduit sections (44, 46) adapted to be connected onto the bottom of a drill string utilized for drilling the cavity, the drill string also having a pair of coaxially extending conduits. The subassembly includes an upper portion which has means for connection onto the drill string and terminates the first conduit of the drill string in a plenum (55). A compressed air-driven pump (62) is suspended from the upper portion. The pump sucks fluids from the bottom of the cavity and discharges them into the second conduit. Compressed air pumped down through the first conduit (46) to the plenum powers the compressed air-driven pump and aerates the fluid in the second conduit to lift it to the earth's surface.

Campbell, Gene K. (Las Vegas, NV)

1983-01-01T23:59:59.000Z

219

Energy Basics: Water Heating  

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

Storage Water Heaters Tankless Demand Water Heaters Heat Pump Water Heaters Solar Water Heaters Tankless Coil & Indirect Water Heaters Water Heating A variety of...

220

Action Plan Agricultural Sciences  

E-Print Network (OSTI)

lines, and becoming an international benchmark in some of them. Incentives will be given to those (elimination of wastes genera- ted by society, decontamination of soils, clean agriculture, etc change, energy or water). Institutes and Centres that comprise the Area The Area comprises a total of 17

Fitze, Patrick

Note: This page contains sample records for the topic "agricultural water pumping" 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

Ground Source Heat Pumps Ground source heat pumps (GSHPs) use the earth's  

E-Print Network (OSTI)

Ground Source Heat Pumps Fact Sheet Ground source heat pumps (GSHPs) use the earth's constant. Waste heat can be used to heat hot water. System Types There are two types of ground source heat pumps, closed loop and open loop systems. Closed loop heat pumps use the earth as the heat source and heat sink

Paulsson, Johan

222

Assessment of New Energy Efficient Circulator Pump Technology  

Science Conference Proceedings (OSTI)

Electric pumps are the workhorses behind several industrial processes that help in transferring liquids, gases, and slurries from one location to another. From simple water pumping systems to sophisticated oil refineries, electric pumps find their application in many different areas. From hot water circulation systems to pool pumps, electric pumps also are used in various capacities in commercial and residential sectors. This technical update provides a technical assessment of a new circulator pump techn...

2010-11-15T23:59:59.000Z

223

Agriculture Information at NIST  

Science Conference Proceedings (OSTI)

NIST Home > Agriculture Information at NIST. Agriculture Information at NIST. CCQM BAWG - P113, Relative Quantification ...

2010-09-23T23:59:59.000Z

224

Evaluation of an Absorption Heat Pump to Mitigate Plant Capacity Reduction Due to Ambient Temperature Rise for an Air-Cooled Ammonia and Water Cycle: Preprint  

DOE Green Energy (OSTI)

Air-cooled geothermal plants suffer substantial decreases in generating capacity at increased ambient temperatures. As the ambient temperature rises by 50 F above a design value of 50 F, at low brine-resource temperatures, the decrease in generating capacity can be more than 50%. This decrease is caused primarily by increased condenser pressure. Using mixed-working fluids has recently drawn considerable attention for use in power cycles. Such cycles are more readily amenable to use of absorption ''heat pumps.'' For a system that uses ammonia and water as the mixed-working fluid, this paper evaluates using an absorption heat pump to reduce condenser backpressure. At high ambient temperatures, part of the turbine exhaust vapor is absorbed into a circulating mixed stream in an absorber in series with the main condenser. This steam is pumped up to a higher pressure and heated to strip the excess vapor, which is recondensed using an additional air-cooled condenser. The operating conditions are chosen to reconstitute this condensate back to the same concentration as drawn from the original system. We analyzed two power plants of nominal 1-megawatt capacity. The design resource temperatures were 250 F and 300 F. Ambient temperature was allowed to rise from a design value of 50 F to 100 F. The analyses indicate that using an absorption heat pump is feasible. For the 300 F resource, an increased brine flow of 30% resulted in a net power increase of 21%. For the 250 F resource, the increase was smaller. However, these results are highly plant- and equipment-specific because evaluations must be carried out at off-design conditions for the condenser. Such studies should be carried out for specific power plants that suffer most from increased ambient temperatures.

Bharathan, D.; Nix, G.

2001-08-06T23:59:59.000Z

225

Survey of advanced-heat-pump developments for space conditioning  

SciTech Connect

A survey of heat pump projects with special emphasis on those supported by DOE, EPRI, and the Gas Research Institute is presented. Some historical notes on heat pump development are discussed. Market and equipment trends, well water and ground-coupled heat pumps, heat-actuated heat pump development, and international interest in heat pumps are also discussed. 30 references.

Fairchild, P.D.

1981-01-01T23:59:59.000Z

226

Heat Pump Systems | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Pump Systems Pump Systems Heat Pump Systems May 16, 2013 - 5:33pm Addthis A heat pump can provide an alternative to using your air conditioner. | Photo courtesy of iStockPhoto/LordRunar. A heat pump can provide an alternative to using your air conditioner. | Photo courtesy of iStockPhoto/LordRunar. What does this mean for me? Heat pumps can supply heat, cooling, and hot water. Your climate and site will determine the type of heat pump most appropriate for your home. For climates with moderate heating and cooling needs, heat pumps offer an energy-efficient alternative to furnaces and air conditioners. Like your refrigerator, heat pumps use electricity to move heat from a cool space to a warm space, making the cool space cooler and the warm space warmer. During the heating season, heat pumps move heat from the cool outdoors into

227

Energy-Water Overview  

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

Emerging Issues and Challenges Emerging Issues and Challenges DOE/EIA 2010 Energy Conference Mike Hightower Sandia National Laboratories mmhight@sandia.gov, 505-844-5499 Energy and Water are ... Interdependent Water for Energy and Energy for Water Energy and power production require water: * Thermoelectric cooling * Hydropower * Energy minerals extraction/mining * Fuel Production (fossil fuels, H 2 , biofuels) * Emission control Water production, processing, distribution, and end-use require energy: * Pumping * Conveyance and Transport * Treatment * Use conditioning * Surface and Ground water Water Consumption by Sector U.S. Freshwater Consumption, 100 Bgal/day Livestock 3.3% Thermoelectric 3.3% Commercial 1.2% Domestic 7.1% Industrial 3.3% Mining 1.2% Irrigation 80.6% Energy uses 27 percent of all non-agricultural fresh water

228

Implementing an agricultural water conservation innovation among the urban public: an analysis of the pilot study phase of the San Antonio Evapotranspiration Project--a cooperative effort between the Texas Agricultural Extension Service--Bexar County Offices, Bexar County Master Gardeners, San Antonio Water Systems and Texas A&M University  

E-Print Network (OSTI)

Increasing urbanization in this country continues to present many challenges and opportunities to education and research institutions, agribusiness, and public and private service agencies. These challenges have propelled the invention of countless innovations which, though perhaps originally intended for addressing rural agricultural dilemmas, eventually are transferred into the urban context to address different problems. One such technological innovation, which was originally aimed at addressing a rural agronomic problem, is being put to use in a creative manner in an urban setting. This innovation, first used to determine-nine accurate soil moisture need for semi-arid land crops, is potential-evapotranspiration (PET) data based irrigation scheduling. Allocation of water resources is an environmental issue that has become a regular element in immediate and long-term program agendas of organizations concerned with the future sutainability of agriculture in Bexar county. There is some argument about the wisest uses of it. Most agree, though, and regional studies are supportive, that one of the uses, turf irrigation, without a doubt needs to be managed more wisely. It is estimated that 40% of the municipal water is used to irrigate turf in the summer in San Antonio. Presently, recommendations for efficient application of water to turf, though specific and descriptive, rely ultimately upon the subjective evaluation of the irrigator. There are many lawn watering philosophies, most of which are not water efficient. Each turf variety has different water requirements. There is a profound need for taking the guesswork out of irrigating lawns. The Bexar County Office of the Texas Agricultural Extension Service actively promotes environmental stewardship" in its educational programs (Highlights, 1996). In Bexar County, one important aspect of sound environmental stewardship is to promote water conservation. One way this agency is currently carrying out this particular part of its mission is through a project that uses the evapotranpiration data technology mentioned above and promotes better understanding and application of water conservation measures in urban lawn irrigation practices. The project is a cooperative effort between San Antonio Water System (SAWS), The Texas Agricultural Extension Service in Bexar County, Texas A&M University (Department of Agricultural engineering), and the Bexar County Master Gardeners, Inc. Part of the overall project is a pilot study being conducted to test the best way of applying this water conservation method to irrigate lawns. Participants in this pilot study are residents of San Antonio and the surrounding area who have agreed to follow certain watering and lawncare protocol instructions, in exchange for free lawn fertilizer for the duration of participation, and priority status with Extension Agents when lawncare questions arise. There are many challenges that the project staff and participants must face in implementing this study if it is to be successful and provide adequate data to convince the general public to adopt this innovation. Conclusions regarding the nature and effectiveness of the project include that excellent communication between staff and participants, teamwork among staff and participant leaders, and a knowledge of the principles behind the adoption process during the remainder of the pilot study phase are essential to success of latter phases and effective adoption of this water conservation method on a larger scale. Reactions by participants, who have been involved in the implemetation of this pilot study to date, are encouraging. The positive consequences so far of educating and enabling only a very small group of citizens may indicate the potentially huge impact this project could have on large scale water conservation in Bexar County. iii

Reilly, Laura Lynne

1998-01-01T23:59:59.000Z

229

Agriculture Residues Recycling  

E-Print Network (OSTI)

Abstract: Saudi Arabia, as well as other countries in the Near East region, is characterized by erratic weather conditions, limited area of fertile arable lands, and with acute water shortage. Although agricultural residues (AGR) production in the region is huge (more than 440 million tons), most of these residues are either burned in the field or utilized in an inefficient way. Utilization of AGR as compost may contribute to expansion of arable lands through its use for reclamation of soil and reduce irrigation requirements. This study was conducted at Al Khalidiah farm, Riyadh, Saudi Arabia to assess compost production at large commercial scale using several types of agricultural and animal by-products with addition of a BZTCompost Activator (based mainly on microorganism, enzymes and yeast). In this study, two types of compost piles were made at the farm. The first pile of compost was made of different agriculture residues, namely: animal wastes (quail, goat and sheep manure), brownian agricultural wastes (windbreaks residues, date trees, citrus and olive trees pruning) and green landscape grasses (50%, 25 % and 25%, respectively) and was treated with a tested compost activator. The same agriculture residues combination was also made for the second pile as traditional compost

M. W. Sadik; H. M. El Shaer; H. M. Yakot

2010-01-01T23:59:59.000Z

230

Heat pump arrangement  

SciTech Connect

The invention concerns a heat pump arrangement for heating of houses. The arrangement comprises a compressor, a condensor and a vaporizer, which is a part of an icing machine. The vaporizer is designed as a heat exchanger and is connected to a circulation system comprising an accumulator, to which the ice slush from the icing machine is delivered. Water from the accumulator is delivered to the icing machine. The water in the accumulator can be heated E.G. By means of a solar energy collector, the outdoor air etc. Surface water or waste water from the household can be delivered to the accumulator and replace the ice slush therein.

Abrahamsson, T.; Hansson, K.

1981-03-03T23:59:59.000Z

231

current issues in international rural development published by the swedish university of agricultural sciences march 2007 Coloured Water  

E-Print Network (OSTI)

and Knowledge in Small-Scale arming Staffwriter 35 More on Water Miscellaneous 36 News from Sida on Rural taken on an enhanced importance. Integration also pertains to scale, ranging from plots, farms, basins hydro-political settings. And while integration has an intuitive appeal, it is also obvious that water

232

Covered Product Category: Centrifugal Pumping System | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Centrifugal Pumping System Centrifugal Pumping System Covered Product Category: Centrifugal Pumping System October 7, 2013 - 11:25am Addthis FEMP provides acquisition guidance across a variety of product categories, including centrifugal pumping systems. Federal laws and executive orders mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law. Buying Energy-Efficient Centrifugal Pumping Systems The most common applications for pumps at Federal facilities are for fresh water supply, hydronic heating and cooling systems, wastewater treatment, and drainage. For these applications, the most common type of pump is the centrifugal pump. Proper pump selection should consider both constant and variable flow and

233

Energy Basics: Water Heating  

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

about: Conventional Storage Water Heaters Demand (Tankless or Instantaneous) Water Heaters Heat Pump Water Heaters Solar Water Heaters Tankless Coil and Indirect Water Heaters...

234

SOLERAS - Solar Controlled Environment Agriculture Project. Final report, Volume 1. Project summary  

DOE Green Energy (OSTI)

A summary of the Solar Controlled Environment Agriculture Project is presented. The design of the greenhouses include transparent double pane glass roof with channels for fluid between the panes, inner pane tinted and double pane extruded acrylic aluminized mylar shade and diffuser. Solar energy technologies provide power for water desalination, for pumping irrigation water, and for cooling and heating the controlled environment space so that crops can grow in arid lands. The project is a joint effort between the United States and Saudi Arabia. (BCS)

Not Available

1985-12-30T23:59:59.000Z

235

Impacts on irrigated agriculture of changes in electricity costs resulting from Western Area Power Administration`s power marketing alternatives  

DOE Green Energy (OSTI)

Irrigation is a major factor in the growth of US agricultural productivity, especially in western states, which account for more than 85% of the nation`s irrigated acreage. In some of these states, almost all cropland is irrigated, and nearly 50% of the irrigation is done with electrically powered pumps. Therefore, even small increases in the cost of electricity could have a disproportionate impact on irrigated agriculture. This technical memorandum examines the impacts that could result from proposed changes in the power marketing programs of the Western Area Power Administration`s Salt Lake City Area Office. The changes could increase the cost of power to all Western customers, including rural municipalities and irrigation districts that rely on inexpensive federal power to pump water. The impacts are assessed by translating changes in Western`s wholesale power rate into changes in the cost of pumping water as an input for agricultural production. Farmers can adapt to higher electricity prices in many ways, such as (1) using different pumping fuels, (2) adding workers and increasing management to irrigate more efficiently, and (3) growing more drought-tolerant crops. This study projects several responses, including using less groundwater and planting fewer waterintensive crops. The study finds that when dependence on Western`s power is high, the cost of power can have a major effect on energy use, agricultural practices, and the distribution of planted acreage. The biggest percentage changes in farm income would occur (1) in Nevada and Utah (however, all projected changes are less than 2% of the baseline) and (2) under the marketing alternatives that represent the lowest capacity and energy offer considered in Western`s Electric Power Marketing Environmental Impact Statement. The aggregate impact on farm incomes and the value of total farm production would be much smaller than that suggested by the changes in water use and planted acreage.

Edwards, B.K.; Flaim, S.J.; Howitt, R.E. [Argonne National Lab., IL (United States); Palmer, S.C. [Western Area Power Administration, Salt Lake City, UT (United States)

1995-03-01T23:59:59.000Z

236

Geothermal Heat Pumps | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Geothermal Heat Pumps Geothermal Heat Pumps Geothermal Heat Pumps June 24, 2012 - 5:08pm Addthis Watch how geothermal heat pumps heat and cool buildings by concentrating the naturally existing heat contained within the earth -- a clean, reliable, and renewable source of energy. How does it work? A geothermal heat pump uses the constant below ground temperature of soil or water to heat and cool your home. Geothermal heat pumps (GHPs), sometimes referred to as GeoExchange, earth-coupled, ground-source, or water-source heat pumps, have been in use since the late 1940s. They use the constant temperature of the earth as the exchange medium instead of the outside air temperature. This allows the system to reach fairly high efficiencies (300% to 600%) on the coldest winter nights, compared to 175% to 250% for air-source heat pumps on cool

237

Agricultural nonpoint source pollution and economic incentive policies. Issues in the reauthorization of the Clean Water Act. Staff report  

SciTech Connect

The limited success of command-and-control policies for reducing nonpoint source (NPS) water pollution mandated under the Federal Water Pollution Control Act (FWPCA) has prompted increased interest in economic incentive policies as an alternative control mechanism. No single policy, however, is likely to be effective in reducing all NPS pollution. Economic incentives may be effective in some cases, command-and-control practices in others.

Malik, A.S.; Larson, B.A.; Ribaudo, M.

1992-11-01T23:59:59.000Z

238

Energy Basics: Microhydropower Turbines, Pumps, and Waterwheels  

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

A microhydropower system needs a turbine, pump, or waterwheel to transform the energy of flowing water into rotational energy, which is then converted into electricity....

239

San Luis Unit technical record of design and construction. Volume 5. Construction Dos Amigos Pumping Plant, Pleasant Valley Pumping Plant. Central Valley Project, West San Joaquin Division, San Luis Unit, California. A water resources technical publication. Final report  

SciTech Connect

The technical record of design and construction of the San Luis unit is divided into seven volumes. This volume, number V, deals with the construction of two specific features of the San Luis unit, Dos Amigos Pumping Plant and Pleasant Valley Pumping Plant.

1974-09-01T23:59:59.000Z

240

Agricultural Microscopy Division Of Interest  

Science Conference Proceedings (OSTI)

Agricultural Microscopy, Reports, Journals, Websites Agricultural Microscopy Division Of Interest Agricultural Microscopy agri-food sector agricultural Agricultural Microscopy analytical aocs articles biotechnology courses detergents division divisions f

Note: This page contains sample records for the topic "agricultural water pumping" 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

Experimental Investigation of the Effect Of Zeolite Coating Thickness on the Performance of a Novel Zeolite-Water Adsorption Heat Pump Module  

E-Print Network (OSTI)

A novel zeolite-water absorption heat pump module comprising an adsorber, an evaporator and a condenser heat exchanger as well as a module non-return valve in a hermetically sealed vessel is introduced. The investigated adsorber heat exchanger is an extruded aluminum finned-tube heat exchanger coated with AQSOA-Z02 zeolite of Mitsubishi Plastics Incorporation (MPI). The effect of the Zeolite layer thickness (300 and 500 micrometers) on the performance of the heat pump module has been experimentally investigated under different operating conditions related to floor heating systems in Middle Europe. A coefficient of performance (COP) of 1.18 has been measured with the 300 micrometers coated adsorber at a return temperature of 35 C, increasing 1.23 at a return temperature of 25 C. With the 500 micrometer coated adsorber, the measured COPs have been enhanced to 1.27 and 1.35, respectively. This enhancement has been attributed to the increase of the ration between zeolite and heat exchanger heat capacities.

Dawoud, B.; Hofle, P.; Chmielewski, S.

2010-01-01T23:59:59.000Z

242

Best Practices for Energy Efficient Cleanrooms: Variable Speed Pumping  

E-Print Network (OSTI)

efficiency of chilled water and condenser pumps, along with chiller efficiency and cooling tower efficiency for cleanrooms and their adjacent spaces. Chillers 39% Cooling Towers 7% Pumps 17% MUAH + RCU Fans 9% Hot Water facility #12;Chiller Power (kW) 62% Chilled Water Pumps Power (kW) 13% Cooling Tower Power (kW) 20

243

Work plan, AP-102 mixer pump removal and pump replacement  

DOE Green Energy (OSTI)

The objective of this work plan is to plan the steps and estimate the costs required to remove the failed AP-102 mixer pump, and to plan and estimate the cost of the necessary design and specification work required to order a new, but modified, mixer pump including the pump and pump pit energy absorbing design. The main hardware required for the removal of the mixer is as follows: a flexible receiver and blast shield; a metal container for the pulled mixer pump; and a trailer and strongback to haul and manipulate the container. Additionally: a gamma scanning device will be needed to detect the radioactivity emanating from the mixer as it is pulled from the tank; a water spray system will be required to remove tank waste from the surface of the mixer as it is pulled from the AP-102 tank; and a lifting yoke to lift the mixer from the pump pit (the SY-101 Mixer Lifting Yoke will be used). A ``green house`` will have to be erected over the AP-102 pump pit and an experienced Hoisting and Rigging crew must be assembled and trained in mixer pump removal methods before the actual removal is undertaken.

Jimenez, R.F.

1994-09-01T23:59:59.000Z

244

Cedarburg Light & Water Utility - Commercial Shared Savings Loan Program  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Cedarburg Light & Water Utility - Commercial Shared Savings Loan Cedarburg Light & Water Utility - Commercial Shared Savings Loan Program (Wisconsin) Cedarburg Light & Water Utility - Commercial Shared Savings Loan Program (Wisconsin) < Back Eligibility Agricultural Commercial Industrial Savings Category Other Heating & Cooling Commercial Heating & Cooling Heating Cooling Appliances & Electronics Manufacturing Home Weatherization Sealing Your Home Design & Remodeling Windows, Doors, & Skylights Commercial Weatherization Ventilation Construction Heat Pumps Commercial Lighting Lighting Water Heating Maximum Rebate $50,000 Program Info State Wisconsin Program Type Utility Loan Program Rebate Amount $2,500 - $50,000 Provider Cedarburg Light and Water Utility Cedarburg Light and Water Utility (CLWU) provides loans for commercial,

245

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  

Science Conference Proceedings (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; Munk, Jeffrey D [ORNL; Baxter, Van D [ORNL; Gehl, Anthony C [ORNL

2012-01-01T23:59:59.000Z

246

Hybrid Geothermal Heat Pump Systems  

Science Conference Proceedings (OSTI)

Hybrid geothermal heat pump systems offer many of the benefits of full geothermal systems but at lower installed costs. A hybrid geothermal system combines elements of a conventional water loop heat pump system in order to reduce the geothermal loop heat exchanger costs, which are probably the largest cost element of a geothermal system. These hybrid systems have been used successfully where sufficient ground space to install large heat exchangers for full geothermal options was unavailable, or where the...

2009-12-21T23:59:59.000Z

247

Absorption Heat Pumps | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

heat pumps driven not by electricity, but by a heat source such as natural gas, propane, solar-heated water, or geothermal-heated water. Because natural gas is the most...

248

Solar Colletors Combined with Ground-Source Heat Pumps in Dwellings - Analyses of System Performance.  

E-Print Network (OSTI)

??The use of ground-source heat pumps for heating buildings and domestic hot water in dwellings is increasing rapidly in Sweden. The heat pump extracts heat (more)

Kjellsson, Elisabeth

2009-01-01T23:59:59.000Z

249

Pump8  

NLE Websites -- All DOE Office Websites (Extended Search)

Preferred Upstream Management Practices Preferred Upstream Management Practices Rewriting the Meaning of "Standard Business Practices" PUMP U.S. Department of Energy * National Energy Technology Laboratory TECHNOLOGY TRANSFER TO THE USER * Regional Production Obstacles: Identification of specific regional obstacles to oil production, and the preferred management practices to overcome the problems. Demonstrate drilling, field opera- tions technology, reservoir man- agement approaches, computer tools, or better ways to comply with environmental regulations in a case study. * Research Groups or Councils: Use established groups or councils in a region to formulate the "best practices" appropriate to that region. The goal is to develop a self- sustaining system to identify pro- duction constraints and solve them

250

Experimental Research of Air Source Heat Pump Frosting and Defrosting in a Double Stage-Coupling Heat Pump  

E-Print Network (OSTI)

In a double stage-coupling heat pump, comprising an air source and water loop heat pump, the 13~20 ? low temperature water is supplied to the water loop heat pump unit. The water loop heat pump can extract heat from the water and heat the indoor air. The most common method of air source heat pump frost removal is reverse-cycle defrost. During the defrosting operation, the heat pump runs in the cooling mode. The defrost process is accomplished by reversing the normal heating mode. In this paper, the effect of the heat storage tank to the air source heat pump defrosting is test. Owing to the existence of the heat storage tank, thermal inertia of the loop is relatively high. The frosting and defrosting course of the air source heat pump have little effect on the room temperature.

Wang, Z.; Gu, J.; Lu, Z.

2006-01-01T23:59:59.000Z

251

Short Course Agricultural Microscopy  

Science Conference Proceedings (OSTI)

Short Course in Agricultural Microscopy. Fargo North Dakota held June 13-16 2011. Sponsored by the Agricultural Microscopy Division of AOCS and the Great Plains Institute of Food Safety. Short Course Agricultural Microscopy Short Courses ...

252

Ground Loops for Heat Pumps and Refrigeration  

E-Print Network (OSTI)

Ground loops are used for water source heat pumps. Refrigeration can be put on a ground loop. Water-cooled condensing units are more efficient than air-cooled, and they can be put indoors. Indoor location makes piping for desuperheater hot water easy. Since refrigeration equipment runs more than heat pumps, energy savings can be large for ground-coupled refrigeration. The paper presents a design procedure for ground loops for heat pumps, hot water, ice machines, and water-cooled refrigeration. It gives an overview of the commercial ground-coupled systems in Louisiana that have both refrigeration and heat pumps. Systems vary from small offices to a three-story office building with 187 tons. A chain of hamburger outlets uses total ground-coupling in all of its stores. A grocery store has ground-coupling for heat pumps and refrigeration. Desuperheaters provide 80 percent of the hot water for a coin laundry in the same building. A comparison of energy costs in a bank with a ground-coupled heat pump system to a similar bank with air-conditioning and gas for heat revealed a 31 percent reduction in utility costs for the ground-coupled building. Two buildings of the Mississippi Power and Light Co. have ground-coupled heat pumps in one, and high efficiency air source heat pumps in the other. Energy savings in nine months was 60,000 kWh (25 percent), and electric peak demand was reduced 42 kW (35 percent).

Braud, H. J.

1986-01-01T23:59:59.000Z

253

Centrifugal and Positive Displacement Charging Pump Maintenance Guide  

Science Conference Proceedings (OSTI)

In pressurized water reactors, charging pumps provide charging flow to the RCS and are also required to be available in the event of a loss of coolant accident (LOCA) event. Pump availability combined with modes of operation have made pump maintenance both frequent and costly. This report provides techniques to assist utilities in reducing maintenance costs for these pumps. Areas for improving reliability of these pumps include: excessive seal leakage, definition of acceptable seal leakage, packing life,...

1996-12-31T23:59:59.000Z

254

Agricultural Improvement Loan Program  

Energy.gov (U.S. Department of Energy (DOE))

The Agricultural Improvement Loan Program is administered by the Minnesota Department of Agriculture through the Minnesota Rural Finance Authority (RFA) and provides loans to farmers for...

255

Agricultural Industrial Relations Bibliography  

E-Print Network (OSTI)

Relations Act: Report. Sacramento, CA: Office of the AuditorLabor Relations Law. Sacramento, CA: California Agricultural1975-76 and 1976-77. Sacramento, CA: California Agricultural

Brown, Cheryl L.; Dote, Grace; Edmonds, Christopher M.; Perloff, Jeffrey M.; Rosenberg, Howard R.; Xiong, Nanyan

1991-01-01T23:59:59.000Z

256

Simulation and performance analysis of an ammonia-water absorption heat pump based on the generator-absorber heat exchange (GAX) cycle  

Science Conference Proceedings (OSTI)

A computer simulation has been conducted to investigate the performance of an absorption heat pump, based on the Generator-Absorber Heat Exchange (GAX) cycle employing ammonia-water as the working fluid pair. The particular feature of this cycle is the ability to recover heat from the absorber and employ it to partially heat the generator, thus improving the COP. In the present study, a detailed simulation has been conducted of one of the preferred configurations for the cycle. A modular computer code for flexible simulation of absorption systems (ABSIM) was employed. Performance parameters, including COP and capacity, were investigated as functions of different operating parameters over a wide range of conditions in both the cooling and heating mode. The effect of the ambient temperature, the rectifier performance, the flowrate in the GAX heat transfer loop and the refrigerant flow control were investigated. COP`s on the order of 1.0 for cooling and 2.0 for heating have been calculated.

Grossman, G. [Israel Institute of Technology, Haifa (Israel); DeVault, R.C.; Creswick, F.A. [Oak Ridge National Lab., TN (United States)

1995-02-01T23:59:59.000Z

257

Analysis of the tradeoff between irrigated agriculure and hydroelectric power in the Pacific Northwest. [Base-line estimate of the effects of agricultural irrigation on the hydroelectric power generating potential projected for the year 2020  

DOE Green Energy (OSTI)

Hydrogeneration and irrigated agriculture are major competing users of the waters of the Columbia River and its tributaries. Irrigated agriculture requires the diversion of large amounts of water from the rivers, only part of which returns. As a result, streamflow is reduced and the generation potential of dams located downstream from points of irrigation diversion is reduced. In addition, irrigated agriculture involves the direct consumption of electricity to pump irrigation water and to apply it to crops in the field. The purpose of this report is to make a baseline estimate of the impact on the electrical generation system in the region of the level of irrigation development projected for year 2020 by the states of Oregon, Washington, and Idaho. This baseline estimate reflects the assumption that current conditions will prevail in the future. The results, therefore, provide a standard against which the impacts of changes in current conditions can be measured. It is estimated that the projected development level of 11.4 million acres of irrigated agriculture in Oregon, Washington, and Idaho by year 2020 would result in foregone hydroelectric generation potential of approximately 17.8 million megawatt-hours (MWh) annually and direct consumption of electric power for pumping and application of approximately 10.3 million MWh's annually. Thus, a total of 28.1 million MWh's of electric power generation will have to be traded off each year if irrigated agriculture is to be conducted on the projected scale. (ERB)

Davis, A. E.

1979-01-01T23:59:59.000Z

258

FEMP--Geothermal Heat Pumps  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

heat pump-like an air conditioner or refrigera- heat pump-like an air conditioner or refrigera- tor-moves heat from one place to another. In the summer, a geothermal heat pump (GHP) operating in a cooling mode lowers indoor temperatures by transferring heat from inside a building to the ground outside or below it. Unlike an air condition- er, though, a heat pump's process can be reversed. In the winter, a GHP extracts heat from the ground and transfers it inside. Also, the GHP can use waste heat from summer air-conditioning to provide virtually free hot-water heating. The energy value of the heat moved is typically more than three times the electricity used in the transfer process. GHPs are efficient and require no backup heat because the earth stays at a relatively moderate temperature throughout the year.

259

Geothermal Heat Pumps | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

You are here You are here Home » Geothermal Heat Pumps Geothermal Heat Pumps June 24, 2012 - 5:08pm Addthis Watch how geothermal heat pumps heat and cool buildings by concentrating the naturally existing heat contained within the earth -- a clean, reliable, and renewable source of energy. How does it work? A geothermal heat pump uses the constant below ground temperature of soil or water to heat and cool your home. Geothermal heat pumps (GHPs), sometimes referred to as GeoExchange, earth-coupled, ground-source, or water-source heat pumps, have been in use since the late 1940s. They use the constant temperature of the earth as the exchange medium instead of the outside air temperature. This allows the system to reach fairly high efficiencies (300% to 600%) on the coldest

260

ELECTRICAL LOAD MANAGEMENT FOR THE CALIFORNIA WATER SYSTEM  

E-Print Network (OSTI)

dam and the Thermalito pumped storage units in the north,This generation pumped storage, and recovery generation, (electricity demand. In a pumped-storage system, water is

Krieg, B.

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "agricultural water pumping" 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

LMFBR with booster pump in pumping loop  

DOE Patents (OSTI)

A loop coolant circulation system is described for a liquid metal fast breeder reactor (LMFBR) utilizing a low head, high specific speed booster pump in the hot leg of the coolant loop with the main pump located in the cold leg of the loop, thereby providing the advantages of operating the main pump in the hot leg with the reliability of cold leg pump operation.

Rubinstein, H.J.

1975-10-14T23:59:59.000Z

262

Environmental and societal consequences of a possible CO/sub 2/-induced climate change. Volume II, Part 8. Impacts of rising atmospheric carbon dioxide levels on agricultural growing seasons and crop water use efficiencies  

Science Conference Proceedings (OSTI)

The researchable areas addressed relate to the possible impacts of climate change on agricultural growing seasons and crop adaptation responses on a global basis. The research activities proposed are divided into the following two main areas of investigation: anticipated climate change impacts on the physical environmental characteristics of the agricultural growing seasons and, the most probable food crop responses to the possible changes in atmospheric CO/sub 2/ levels in plant environments. The main physical environmental impacts considered are the changes in temperature, or more directly, thermal energy levels and the growing season evapotranspiration-precipitation balances. The resulting food crop, commercial forest and rangeland species response impacts addressed relate to potential geographical shifts in agricultural growing seasons as determined by the length in days of the frost free period, thermal energy changes and water balance changes. In addition, the interaction of possible changes in plant water use efficiencies during the growing season in relationship to changing atmospheric CO/sub 2/ concentrations, is also considered under the scenario of global warming due to increases in atmospheric CO/sub 2/ concentration. These proposed research investigations are followed by adaptive response evaluations.

Newman, J. E.

1982-09-01T23:59:59.000Z

263

Geothermal heat pumps in Pierre  

SciTech Connect

There are two municipal connected heat pumps in Pierre, South Dakota: the South Dakota Discovery Center and Pierre City Hall.Both systems now utilize plate heat exchanger between the city water loop and the building loop. This article describes the geothermal system used in Pierre for both space heating and cooling of municipal buildings.

Wegman, S. [South Dakota Public Utilities Commission, Pierre, SD (United States)

1997-12-01T23:59:59.000Z

264

VAPOR COMPRESSION HEAT PUMP SYSTEM FIELD TESTS AT THE TECH COMPLEX  

E-Print Network (OSTI)

, two conventional air- to-ir heat pumps, an air-to-air heat pump with desuperheater water heater for several novel and conventional heat pump systems for space conditioning and water heating. Systems tested include the Annual Cycle Energy System (ACES), solar assisted heat pumps (SAHP) both parallel and series

Oak Ridge National Laboratory

265

Match Pumps to System Requirements  

SciTech Connect

BestPractices Program tip sheet discussing pumping system efficiency matching pumps to system requirements

2005-10-01T23:59:59.000Z

266

NREL: Learning - Geothermal Heat Pump Basics  

NLE Websites -- All DOE Office Websites (Extended Search)

Heat Pump Basics Heat Pump Basics Photo of the West Philadelphia Enterprise Center. The West Philadelphia Enterprise Center uses a geothermal heat pump system for more than 31,000 square feet of space. Geothermal heat pumps take advantage of the nearly constant temperature of the Earth to heat and cool buildings. The shallow ground, or the upper 10 feet of the Earth, maintains a temperature between 50° and 60°F (10°-16°C). This temperature is warmer than the air above it in the winter and cooler in the summer. Geothermal heat pump systems consist of three parts: the ground heat exchanger, the heat pump unit, and the air delivery system (ductwork). The heat exchanger is a system of pipes called a loop, which is buried in the shallow ground near the building. A fluid (usually water or a mixture of

267

Water Heating Basics | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Heaters Solar Water Heaters Tankless Coil and Indirect Water Heaters Addthis Related Articles Tankless Demand Water Heater Basics Solar Water Heater Basics Heat Pump Water Heater...

268

S-102 Transfer Pump Restriction Modeling Results  

SciTech Connect

It was determined that a radioactive waste leak in the Hanford S Farm in the vicinity of the S-102 retrieval pump discharge occurred because of over-pressurization and failure of the S-102 dilution water supply hose while operating the retrieval pump in reverse with an obstructed suction cavity and an unobstructed flow path to the dilution water supply hose. This report describes efforts to identify plausible scenarios for the waste leak to occur.

Wells, Beric E.; Johnson, Kenneth I.; Rector, David R.; Trent, Donald S.

2008-03-27T23:59:59.000Z

269

Sulfuric acid/water chemical heat pump/chemical energy storage. Final report: Phases 1 and 2, October 1979 through September 1980; Phases 3 and 4, October 1980 through January 1982  

DOE Green Energy (OSTI)

The sulfuric acid/water chemical heat pump/chemical energy storage (CHP/CES) concept was expanded to include previously unexplored applications, the most notable of which is the industrial chemical heat pump. A requirements analysis was completed which showed the CHP/CES application having the greatest near-term-commercialization potential in the form of a temperature amplification system. Another configuration, the HVAC system with or without diurnal storage was selected for further study. A verification test unit (VTU) was designed and is capable of demonstrating operation as an ICHP as well as an HVAC system. The VTU was fabricated and tested with a nominal power rating of 150,000 Btu/hr. Testing of the unit was directed at evaluating operational performance in the industrial waste heat upgrade mode. (LEW)

Not Available

1982-04-01T23:59:59.000Z

270

Agricultural Microscopy Division  

Science Conference Proceedings (OSTI)

The Agricultural Microscopy Division advances visual imaging in discerning the quality and content of ingredients and finished products of the feed, fertilizer, seed, and agri-food sectors. Agricultural Microscopy Division Divisions achievement ag

271

The Annual Agricultural Cycle  

E-Print Network (OSTI)

. Sman shad agriculture 1.WAV Length of track 00:44:03 Related tracks (include description/relationship if appropriate) Title of track The Annual Agricultural Cycle Translation of title Description (to be used in archive entry...

Zla ba sgrol ma

2009-11-16T23:59:59.000Z

272

Installing and Operating an Efficient Swimming Pool Pump | Department...  

NLE Websites -- All DOE Office Websites (Extended Search)

Water with an Efficient Swimming Pool Installing and Operating an Efficient Swimming Pool Pump Swimming Pool Covers An example of a solar pool heater. Solar Swimming Pool Heaters...

273

Facility HVAC System Conversion to Ground Source Heat Pump Geothermal...  

Open Energy Info (EERE)

ventilators will utilize the hot water to "temper" outdoor air ventilation. Although the heat pump modules can provide both heating and cooling, the space requires heating only....

274

Alabama Power - Residential Heat Pump and Weatherization Loan...  

Open Energy Info (EERE)

Doors, DuctAir sealing, Heat pumps, Programmable Thermostats, Water Heaters, Windows Active Incentive Yes Implementing Sector Utility Energy Category Energy Efficiency...

275

Application of the soil and water assessment tool in a tropical agricultural catchment of the Panama Canal watershed implications for its use in watershed management activities.  

E-Print Network (OSTI)

??The Panama Canal Watershed (PCW) provides water to operate the Canal, generate hydroelectricity, and supply water provisions to the local and metropolitan populations. With a (more)

Oestreicher, Jordan

2008-01-01T23:59:59.000Z

276

Heat Pump Swimming Pool Heaters | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

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

277

Water and Energy Interactions  

E-Print Network (OSTI)

Hydroelectricity for agriculture and hydroelectricity. Large volumes of waterElectricity Production Hydroelectricity The most common type

McMahon, James E.

2013-01-01T23:59:59.000Z

278

Evaluation and Test of Improved Fire Resistant Fluid Lubricants for Water Reactor Coolant Pump Motors, Volume 1: Fluid Evaluation, Bearing Model Tests, Motor Tests, and Fire Tests  

Science Conference Proceedings (OSTI)

Commercially available fire-resistant fluid lubricants were evaluated to determine their suitability for use in primary-system pump motors in nuclear reactors. Volume 1 describes the procedures and results of tests of lubrication properties; fire and radiation resistance; and thermal, oxidative, and hydrolytic stability.

1980-07-01T23:59:59.000Z

279

Industrial Heat Pump Case Study  

E-Print Network (OSTI)

An open-cycle heat pump was retrofitted to a single-effect, recirculating-type evaporator used for reducing the water content of whey (a liquid by-product from cheese production). The purpose of the retrofit was to reduce the energy costs associated with operating the evaporator. The open-cycle heat pump design uses an electrically driven centrifugal compressor to recover the latent heat of the water vapor generated by the evaporator. (Steam was the original heat source but is now only needed for start-up.) This concept is sometimes called mechanical vapor compression (MVC) or mechanical vapor recompression (MVR). A variety of engineering issues have to be resolved to integrate a heat pump into an evaporator system. This paper identifies key issues and describes how they were resolved for this particular process. Issues include choice of compressor, motor selection, control strategy, impact of heat pump on heat exchanger surface area requirements and related issues, and methods for protecting the compressor from surge, droplet ingestion, and other hazards.

Wagner, J. R.; Brush, F. C.

1985-05-01T23:59:59.000Z

280

Advanced Manufacturing Office: Pump Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Pump Systems on Twitter Bookmark Advanced Manufacturing Office: Pump Systems on Google Bookmark Advanced Manufacturing Office: Pump Systems on Delicious Rank Advanced...

Note: This page contains sample records for the topic "agricultural water pumping" 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

Assessment of New Motor Technologies and their Applications: Evaluation of an advanced circulator pump for residential, commercial and industrial applications  

Science Conference Proceedings (OSTI)

Electric pumps are the workhorses behind several industrial processes that help transfer liquids, gases and slurries from one location to another. From simple water pumping systems to sophisticated oil refineries, electric pumps are used in many different areas. Electric pumps are also used in various capacities in the commercial and residential sectors from hot water circulation systems to pool pumps. This technical update provides an assessment of a new circulator pump technology that uses ...

2013-12-04T23:59:59.000Z

282

Best Practice for Energy Efficient Cleanrooms: Control of Chilled Water System  

E-Print Network (OSTI)

loop chilled water pumps, condenser water pumps, and coolingsuch as 55F, and lower condenser water temperatures such assizing ? Cooling tower and condenser optimization ? Variable

Xu, Tengfang

2005-01-01T23:59:59.000Z

283

Rotary magnetic heat pump  

DOE Patents (OSTI)

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

Kirol, Lance D. (Shelly, ID)

1988-01-01T23:59:59.000Z

284

Rotary magnetic heat pump  

DOE Patents (OSTI)

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

Kirol, L.D.

1987-02-11T23:59:59.000Z

285

Advances in solar assisted drying systems for agricultural produce  

Science Conference Proceedings (OSTI)

The technical directions in the development of solar assisted drying systems system for agricultural produce are compact collector design, high efficiency, integrated storage, and long-life drying system. Air based solar collectors are not the only available ... Keywords: V-groove solar collector, double-pass solar collector, photovoltaic thermal collectors, solar assisted chemical heat pump system, solar dehumidification system

Kamaruzzaman Sopian; Mohd Yusof Sulaiman; Mohd Yusof Othman; Sohif Mat; Muhamad Yahya; Mohamad A. Alghoul; Baharudin Ali; Lim Chin Haw; Mohd Hafidz Ruslan; Azami Zaharim

2009-02-01T23:59:59.000Z

286

Liquid metal electric pump  

DOE Patents (OSTI)

An electrical pump for pumping liquid metals to high pressures in high temperature environments without the use of magnets or moving mechanical parts. The pump employs a non-porous solid electrolyte membrane, typically ceramic, specific to the liquid metal to be pumped. A DC voltage is applied across the thickness of the membrane causing ions to form and enter the membrane on the electrically positive surface, with the ions being neutralized on the opposite surface. This action provides pumping of the liquid metal from one side of the non-porous solid electrolyte membrane to the other. 3 figs.

Abbin, J.P.; Andraka, C.E.; Lukens, L.L.; Moreno, J.B.

1992-01-14T23:59:59.000Z

287

Water Resources Restoration and Preservation Act (Florida) |...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Water Resources Restoration and Preservation Act (Florida) Water Resources Restoration and Preservation Act (Florida) Eligibility Agricultural Commercial Construction Developer...

288

Ground Water Management Regulations (Louisiana) | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ground Water Management Regulations (Louisiana) Ground Water Management Regulations (Louisiana) Eligibility Agricultural Construction Developer Fuel Distributor Industrial...

289

Nuclear Maintenance Applications Center: Reactor Recirculation Pump Seal Maintenance Guide  

Science Conference Proceedings (OSTI)

In 1993, the Electric Power Research Institute (EPRI) published Main Coolant Pump Seal Maintenance Guide (report TR-100855). That report provides guidance on maintenance and troubleshooting of main coolant pump seals but was generic in naturethe information was relevant to pressurized water reactors (PWRs) and boiling water reactors (BWRs).

2008-12-18T23:59:59.000Z

290

Sustainable Agriculture Loan Program  

Energy.gov (U.S. Department of Energy (DOE))

The Minnesota Sustainable Agriculture Loan program will provide loans to Minnesota residents actively engaged in farming for capital expenditures which enhance the environmental and economic...

291

Alabama Power - Residential Heat Pump and Weatherization Loan Programs |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Alabama Power - Residential Heat Pump and Weatherization Loan Alabama Power - Residential Heat Pump and Weatherization Loan Programs Alabama Power - Residential Heat Pump and Weatherization Loan Programs < Back Eligibility Residential Savings Category Home Weatherization Commercial Weatherization Sealing Your Home Design & Remodeling Windows, Doors, & Skylights Ventilation Heating & Cooling Commercial Heating & Cooling Heat Pumps Appliances & Electronics Water Heating Maximum Rebate Windows: $350 Program Info State Alabama Program Type Utility Loan Program Rebate Amount Not specified Provider Alabama Power Alabama Power offers low-interest loans to residential customers to purchase and install new heat pumps and a variety of weatherization measures. The loans require no money down and can be used to finance an air

292

Industrial and Commercial Heat Pump Applications in the United States  

E-Print Network (OSTI)

The energy crisis of 1973 accelerated the development of large-scale heat pumps in the United States. Since that time, the commercial, institutional, and industrial applications of heat pumps for waste heat recovery have expanded. This paper reviews the trends in heat pump cycle developments and discusses both the closed vapor compression cycle and refrigerants most commonly used and the open-cycle mechanical vapor compression heat pumps. Waste heat sources, heat loads served by heat pumps--and typical applications using heat pumps for large-scale space heating, domestic water heating, and industrial process water heating-- are discussed. Typical installations include commercial applications in hotels, high-rise apartments and condominiums, and office buildings. Institutional installations discussed include hospitals, universities, wastewater treatment plants, and airport terminals. Industrial applications largely center on food processing industries, feedwater heating, metal fabricating, and other industries. Reference is also made to other applications and alternative energy sources now gaining acceptance, including groundwater/geothermal water.

Niess, R. C.

1986-06-01T23:59:59.000Z

293

Agricultural Microscopy Division List  

Science Conference Proceedings (OSTI)

Name AffiliationCity, State, CountryAgricultural Microscopy Division2013 Members72 Members as of October 1, 2013Ajbani, RutviInstitute of Chemical TechnologyMumbai, MH, IndiaAlonso, CarmenPuerto Rico Dept ofAgricultureDorado, Puerto RicoArmbrust, KevinLoui

294

Publications Agricultural Economics  

E-Print Network (OSTI)

. (2012). Economics of IPM Decisions. Stored Product Protection (1- 9). Manhattan, KS: Kansas State (1-11). Manhattan, KS: Kansas State. http://entomology.k-state.edu/doc/finished- chapters/s156-ch-27 of Food and Agriculture­ Conservation Effects Assessment Project. How to Build Better Agricultural

295

College of Agriculture Departments and Degree Programs Agricultural  

E-Print Network (OSTI)

Agricultural Education Animal & Range Sciences Land Resources & Environmental Sciences Immunology & Infectious Diseases Multi Disciplinary Agricultural Business Agricultural Education Animal Science Natural Resources & Rangeland Ecology Environmental Sciences Pre-Vet Program (non-degree) Biotechnology Sustainable Foods

Lawrence, Rick L.

296

Electrokinetic pumps and actuators  

DOE Green Energy (OSTI)

Flow and ionic transport in porous media are central to electrokinetic pumping as well as to a host of other microfluidic devices. Electrokinetic pumping provides the ability to create high pressures (to over 10,000 psi) and high flow rates (over 1 mL/min) with a device having no moving parts and all liquid seals. The electrokinetic pump (EKP) is ideally suited for applications ranging from a high pressure integrated pump for chip-scale HPLC to a high flow rate integrated pump for forced liquid convection cooling of high-power electronics. Relations for flow rate and current fluxes in porous media are derived that provide a basis for analysis of complex microfluidic systems as well as for optimization of electrokinetic pumps.

Phillip M. Paul

2000-03-01T23:59:59.000Z

297

Simulation of effects of climate change on surface water balances of agricultural lands. Final technical report, 30 September 1992-29 September 1994  

Science Conference Proceedings (OSTI)

In this project, the authors used the simulation model ENWATBAL and a stochastic weather generator (WXGEN) to evaluate the impact of climatic change on water balances of cotton and sorghum, major crops in Texas that differ in their response to elevated CO2. Specific objectives were: test the accuracy of the ENWATBAL model for the study of climate change; determine the sensitivities of soil water evaporation and transpiration of cotton and sorghum to single and multifactor changes in climate and CO2; and assess effects of gradual climate change on water balances of cotton and sorghum in west Texas.

Heilman, J.L.; McFarland, M.J.

1994-12-31T23:59:59.000Z

298

Detection of pump degradation  

SciTech Connect

This Phase II Nuclear Plant Aging Research study examines the methods of detecting pump degradation that are currently employed in domestic and overseas nuclear facilities. This report evaluates the criteria mandated by required pump testing at U.S. nuclear power plants and compares them to those features characteristic of state-of-the-art diagnostic programs and practices currently implemented by other major industries. Since the working condition of the pump driver is crucial to pump operability, a brief review of new applications of motor diagnostics is provided that highlights recent developments in this technology. The routine collection and analysis of spectral data is superior to all other technologies in its ability to accurately detect numerous types and causes of pump degradation. Existing ASME Code testing criteria do not require the evaluation of pump vibration spectra but instead overall vibration amplitude. The mechanical information discernible from vibration amplitude analysis is limited, and several cases of pump failure were not detected in their early stages by vibration monitoring. Since spectral analysis can provide a wealth of pertinent information concerning the mechanical condition of rotating machinery, its incorporation into ASME testing criteria could merit a relaxation in the monthly-to-quarterly testing schedules that seek to verify and assure pump operability. Pump drivers are not included in the current battery of testing. Operational problems thought to be caused by pump degradation were found to be the result of motor degradation. Recent advances in nonintrusive monitoring techniques have made motor diagnostics a viable technology for assessing motor operability. Motor current/power analysis can detect rotor bar degradation and ascertain ranges of hydraulically unstable operation for a particular pump and motor set. The concept of using motor current or power fluctuations as an indicator of pump hydraulic load stability is presented.

Greene, R.H.; Casada, D.A.; Ayers, C.W. [and others

1995-08-01T23:59:59.000Z

299

Modeling and Experimental Research on Ground-Source Heat Pump in Operation by Neural Network  

Science Conference Proceedings (OSTI)

Ground source Heat Pump(GSHP) is becoming the more and more focus of the worlds attention as a HVAC technique of energy saving and environment protection. This paper first introduced the experiment for Ground-Source water/water Heat Pump. The heat ... Keywords: Ground-Source Heat Pump(GSHP), Neural Network(NN) Predication modeling

Jianping Chen; Zhiwei Lian; Lizheng Tan; Weifeng Zhu; Weiqiang Zhang

2011-02-01T23:59:59.000Z

300

Minimize pump downtime  

Science Conference Proceedings (OSTI)

In refineries and petrochemical plants, centrifugal pumps usually lead the list of equipment that is most susceptible to failure. Using guidelines, maintenance mechanics can improve troubleshooting methods when investigating pump bedplates, underlying concrete foundations and grouting problems. Too often, mechanics may improperly diagnose a misalignment--caused by grouting problems--as an unbalance or a bearing-wearing problem when troubleshooting pump failure. Result: bearing, shaft and seal failures occur from a flawed maintenance procedure. Identifying mounting-surface problems can improve pump performance and decrease unit downtime.

Myers, R.D. [ITW Escoweld Systems, Kingwood, TX (United States)

1995-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "agricultural water pumping" 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

Subsea Pumped Hydro Storage.  

E-Print Network (OSTI)

??A new technology for energy storage called Subsea Pumped Hydro Storage (SPHS) has been evaluated from a techno-economical point of view. Intermittent renewable energy sources (more)

Erik, Almen John

2013-01-01T23:59:59.000Z

302

Vertical pump turbine oil environmental evaluation  

DOE Green Energy (OSTI)

In Oregon low-temperature geothermal injection well construction, siting and receiving formations requires approval by the Water Resources Department (OWRD). In addition, the Oregon Department of Environmental Quality (ODEQ) has regulations concerning injection. Conversations with the OWRD and ODEQ representatives indicated they were very concerned about the potential for contamination of the geothermal (and cooler but hydraulically connected) aquifers by oils and grease. Their primary concern was over the practice of putting paraffin, motor oils and other hydrocarbons in downhole heat exchanger (DHE) wells to prevent corrosion. They also expressed considerable concern about the use of oil in production well pumps since the fluids pumped would be injected. Oregon (and Idaho) prohibit the use of oil-lubricated pumps for public water supplies except in certain situations where non-toxic food-grade lubricants are used. Since enclosed-lineshaft oil-lubricated pumps are the mainstay of direct-use pumping equipment, the potential for restricting their use became a concern to the Geo-Heat Center staff. An investigation into alternative pump lubrication schemes and development of rebuttals to potential restrictions was proposed and approved as a contract task. (SM)

Culver, G.

1991-04-01T23:59:59.000Z

303

New and Underutilized Technology: Commercial Ground Source Heat Pumps |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Commercial Ground Source Heat Commercial Ground Source Heat Pumps New and Underutilized Technology: Commercial Ground Source Heat Pumps October 8, 2013 - 2:59pm Addthis The following information outlines key deployment considerations for commercial ground source heat pumps within the Federal sector. Benefits Commercial ground source heat pumps are ground source heat pump with loops that feed multiple packaged heat pumps and a single ground source water loop. Unit capacity is typically 1-10 tons and may be utilized in an array of multiple units to serve a large load. Application Condensing boilers are appropriate for housing, service, office, and research and development applications. Key Factors for Deployment FEMP has made great progress with commercial ground source heat pump technology deployment within the Federal sector. Primary barriers deal with

304

Economic Effect on Agricultural Production of Alternative Energy Input Prices: Texas High Plains  

E-Print Network (OSTI)

The Arab oil embargo of 1973 awakened the world to the reality of energy shortages and higher fuel prices. Agriculture in the United States is highly mechanized and thus energy intensive. This study seeks to develop an evaluative capability to readily determine the short-run effect of rising energy prices on agricultural production. The results are measured in terms of demand schedules for each input investigated, net revenue adjustments, cropping pattern shifts, and changes in agricultural output. The High Plains of Texas was selected as a study area due to the heterogeneous nature of agricultural production in the region and highly energy intensive methods of production employed. The region is associated with a diversity in crops and production practices as well as a high degree of mechanization and irrigation, which means agriculture is very dependent upon energy inputs and, in turn, is significantly affected by energy price changes. The study area was defined by the Texas Agricultural Extension subregions of High Plains II, High Plains III, and High Plains IV. The crops chosen for study were cotton, grain sorghum, wheat, corn, and soybeans. The energy and energy-related inputs under investigation were diesel, herbicide, natural gas, nitrogen fertilizer, and water. Mathematical linear programming was used as the analytical technique with parametric programming techniques incorporated into the LP model to evaluate effect of varying input price parameters over a specified range. Thus, demand schedules were estimated. The objective function was constructed using variable costs only; no fixed costs are considered. Therefore, the objective function maximizes net revenue above variable costs and thus limits the study to the short run. The data bases for the model were crop enterprise budgets developed by the Texas Agricultural Extension Service. These budgets were modified to adapt them to the study. Particularly important was the substitution of owner-operated harvesting equipment for custom-harvesting costs. This procedure made possible the delineation of fuel use by crop and production alternative which was necessary information in the accounting of costs. The completed LP model was applied to 16 alternative situations made up of various input and product price combinations which are considered as feasible in the short run future. The results reveal that diesel consumption would change very little in the short run unless commodity prices simultaneously decline below the lowest prices since 1971 or unless diesel price approaches $2.00 per gallon. Under average commodity price conditions, natural gas consumption would not decline appreciably until the price rose above $4.00 per 1000 cubic feet (mcf). Even when using the least product prices since 1971, natural gas would be consumed in substantial amounts as long as the price was below $1.28 per Mcf. The findings regarding nitrogen indicate that present nitrogen prices are within a critical range such that consumption would be immediately affected by nitrogen price increases. Water price was considered as the price a farmer can afford to pay for water above pumping and distribution costs. Application of water was defined as the price that would be paid for imported water. Under average commodity price conditions, the study results show that as water price rises from zero dollars to $22 per acre foot there would be less than a 4 percent reduction in consumption. However, as the price continues to rise, consumption would decline dramatically reaching zero at a water price of $71.75 per acre foot. This study indicates that rising input prices would cause acreage shifts from irrigated to dryland; however, with average commodity prices, these shifts do not occur until diesel reaches $2.69 per gallon, or natural gas sells for $1.92 per Mcf, or nitrogen price is $.41 per pound, or water price reaches $14.69 per acre foot. In general, the first crops that would shift out of production as energy input prices rise woul

Adams, B. M.; Lacewell, R. D.; Condra, G. D.

1976-06-01T23:59:59.000Z

305

High aspect ratio, remote controlled pumping assembly  

DOE Patents (OSTI)

A miniature dual syringe-type pump assembly is described which has a high aspect ratio and which is remotely controlled, for use such as in a small diameter penetrometer cone or well packer used in water contamination applications. The pump assembly may be used to supply and remove a reagent to a water contamination sensor, for example, and includes a motor, gearhead and motor encoder assembly for turning a drive screw for an actuator which provides pushing on one syringe and pulling on the other syringe for injecting new reagent and withdrawing used reagent from an associated sensor. 4 figs.

Brown, S.B.; Milanovich, F.P.

1995-11-14T23:59:59.000Z

306

Well-pump alignment system  

DOE Patents (OSTI)

An improved well-pump for geothermal wells, an alignment system for a well-pump, and to a method for aligning a rotor and stator within a well-pump, wherein the well-pump has a whistle assembly formed at a bottom portion thereof, such that variations in the frequency of the whistle, indicating misalignment, may be monitored during pumping.

Drumheller, Douglas S. (Cedar Crest, NM)

1998-01-01T23:59:59.000Z

307

Central Air Conditioners","Heat Pumps","Individual Air Conditioners","District Chilled Water","Central Chillers","Packaged  

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

5. Cooling Equipment, Floorspace, 1999" 5. Cooling Equipment, Floorspace, 1999" ,"Total Floorspace (million square feet)" ,"All Buildings","All Cooled Buildings","Cooling Equipment (more than one may apply)" ,,,"Residential-Type Central Air Conditioners","Heat Pumps","Individual Air Conditioners","District Chilled Water","Central Chillers","Packaged Air Conditioning Units","Swamp Coolers","Other" "All Buildings ................",67338,58474,8329,9147,14276,2750,12909,36527,2219,1312 "Building Floorspace" "(Square Feet)" "1,001 to 5,000 ...............",6774,4879,890,700,962,"Q","Q",2613,253,"Q" "5,001 to 10,000 ..............",8238,6212,1606,707,1396,"Q","Q",3197,181,"Q"

308

NEUTRONIC REACTOR FUEL PUMP  

DOE Patents (OSTI)

A reactor fuel pump is described which offers long life, low susceptibility to radiation damage, and gaseous fission product removal. An inert-gas lubricated bearing supports a journal on one end of the drive shsft. The other end has an impeller and expansion chamber which effect pumping and gas- liquid separation. (T.R.H.)

Cobb, W.G.

1959-06-01T23:59:59.000Z

309

Detection of pump degradation  

Science Conference Proceedings (OSTI)

There are a variety of stressors that can affect the operation of centrifugal pumps. Although these general stressors are active in essentially all centrifugal pumps, the stressor level and the extent of wear and degradation can vary greatly. Parameters that affect the extent of stressor activity are manifold. In order to assure the long-term operational readiness of a pump, it is important to both understand the nature and magnitude of the specific degradation mechanisms and to monitor the performance of the pump. The most commonly applied method of monitoring the condition of not only pumps, but rotating machinery in general, is vibration analysis. Periodic or continuous spectral vibration analysis is a cornerstone of most pump monitoring programs. In the nuclear industry, non-spectral vibration monitoring of safety-related pumps is performed in accordance with the ASME code. Although vibration analysis has dominated the condition monitoring field for many years, there are other measures that have been historically used to help understand pump condition: advances in historically applied technologies and developing technologies offer improved monitoring capabilities. The capabilities of several technologies (including vibration analysis, dynamic pressure analysis, and motor power analysis) to detect the presence and magnitude of both stressors and resultant degradation are discussed.

Casada, D.

1994-12-31T23:59:59.000Z

310

Overshooting of agricultural prices  

E-Print Network (OSTI)

Rotenberg, Julio J. , "Sticky Prices in the United States,"Monetary Policy on United States Agriculture. A Fix-Price,Flex-Price Approach," Unpublished Ph.D. Disser- tation,

Stamoulis, Kostas G.; Rausser, Gordon C.

1987-01-01T23:59:59.000Z

311

Agricultural Meteorology in China  

Science Conference Proceedings (OSTI)

During nearly five weeks in China (MayJune 1981), the author visited scientific institutions and experiment stations engaged in agricultural meterology and climatology research and teaching. The facilities, studies, and research programs at each ...

Norman J. Rosenberg

1982-03-01T23:59:59.000Z

312

Closed cycle steam turbine system with liquid vortex pump  

SciTech Connect

A closed cycle steam generating system is described comprising a steam boiler, and a steam turbine includes a vacuum pump of the liquid vortex type for condensing the exhaust steam from the turbine, a feedwater pump being employed for returning the condensate to the boiler. The tank of the vortex pump is maintained filled with water and the pressure in the tank is regulated automatically to maintain a predetermined value thereof.

Brown, K.D.

1976-08-10T23:59:59.000Z

313

Generation Maintenance Applications Center: Conventional Vertical Pump Maintenance Guide  

Science Conference Proceedings (OSTI)

Vertical pumps are used in several applications in power plants, such as condensate, heater drain, circulating water, and service water/river water applications.BackgroundThe Maintenance Issue Surveys of the Electric Power Research Institute (EPRI) Generation Maintenance Applications Center (GenMAC) indicate that members are experiencing difficulties with various maintenance issues associated with vertical pumps. Some of the problems identified a need for ...

2013-12-19T23:59:59.000Z

314

Granby Pumping Plant  

NLE Websites -- All DOE Office Websites (Extended Search)

Granby Pumping Plant Granby Pumping Plant Skip Navigation Links Transmission Functions Infrastructure projects Interconnection OASIS OATT Granby Pumping Plant-Windy Gap Transmission Line Rebuild Project Western owns and operates a 12-mile, 69-kV electric transmission line in Grand County, Colo., that originates at Windy Gap Substation and terminates at Granby Pumping Plant Switchyard. The proposed project would rebuild the single circuit line as a double circuit transmission line and add a second power transformer. One circuit would replace the existing 69-kV line; the other circuit would be a new 138-kV line. Granby Pumping Plant Switchyard would be expanded to accommodate the second line and power transformer. Windy Gap Substation would be modified to accommodate the second line.

315

Energy Basics: Heat Pump Systems  

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

of air-source heat pumps. Absorption Heat Pump Uses heat as its energy source. Geothermal Heat Pumps Use the constant temperature of the earth as the exchange medium instead...

316

Geothermal Heat Pump Tax Credit (Corporate) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Geothermal Heat Pump Tax Credit (Corporate) Geothermal Heat Pump Tax Credit (Corporate) Geothermal Heat Pump Tax Credit (Corporate) < Back Eligibility Agricultural Commercial Residential Maximum Rebate 9,000 per system Annual aggregate cap of 2 million in total corporate and personal tax credits Program Info Start Date 1/1/2010 Expiration Date 12/31/2020 State New Mexico Program Type Corporate Tax Credit Rebate Amount 30% Provider New Mexico Energy, Minerals and Natural Resources Department [http://www.emnrd.state.nm.us/ECMD/LawsRegulationsExecutiveOrders/documen... HB 375], signed in April 2009, created a tax credit in New Mexico for geothermal heat pumps purchased and installed between January 1, 2010 and December 31, 2020 on property owned by the tax payer. The credit is worth 30% of the system's cost up to $9,000 and can be applied to individual or

317

Best Practice for Energy Efficient Cleanrooms: Control of Chilled Water System  

E-Print Network (OSTI)

MUAH + RCU Fans Pumps Cooling Towers Figure 1. Benchmarkedcondenser water pumps, and cooling towers for water-cooledRight sizing ? Cooling tower and condenser optimization ?

Xu, Tengfang

2005-01-01T23:59:59.000Z

318

Energy Basics: Geothermal Heat Pumps  

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

EERE: Energy Basics Geothermal Heat Pumps Geothermal heat pumps use the constant temperature of the earth as an exchange medium for heat. Although many parts of the country...

319

Heat pumps | Open Energy Information  

Open Energy Info (EERE)

Page Edit History Facebook icon Twitter icon Heat pumps Jump to: navigation, search TODO: Add description List of Heat pumps Incentives Retrieved from "http:en.openei.orgw...

320

Tahoe Water Systems | Open Energy Information  

Open Energy Info (EERE)

Tahoe Water Systems Jump to: navigation, search Name Tahoe Water Systems Sector Solar, Wind energy Product Develops a self-contained solarwind based water pumping technology....

Note: This page contains sample records for the topic "agricultural water pumping" 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

Proceedings: Meeting Customer Needs With Heat Pumps--1989  

Science Conference Proceedings (OSTI)

Electric heat pumps provide a growing number of satisfied customers with space heating and cooling, humidity control, and water heating. Today's increasingly efficient heat pumps emphasize customer comfort and economy and help utilities satisfy their load-shape objectives in an environmentally acceptable manner.

1991-02-27T23:59:59.000Z

322

RENEWABLE LIQUID GETTERING PUMP  

DOE Patents (OSTI)

A method and structure were developed for pumping gases by simple absorption into a liquid gettering material. The invention comprises means ror continuously pumping a liquid getterrng material from a reservoir to the top of a generally vertical surface disposed in a vacuum pumping chamber to receive gaseous and other particles in the liquid gettering material which continuously flows downward over the vertical suiface. Means are provided for continuous removal, degassing, and return of a portion of the liquid gettering material from the reservoir connected with collectrng means at the base of the generally vertical plate. (AEC)

Batzer, T.H.

1962-08-21T23:59:59.000Z

323

Heat Pumps | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Heat Pumps Heat Pumps Heat Pumps Geothermal heat pumps are expensive to install but pay for themselves over time in reduced heating and cooling costs. Learn more about how geothermal heat pumps heat and cool buildings by concentrating the naturally existing heat contained within the earth -- a clean, reliable, and renewable source of energy. In moderate climates, heat pumps can be an energy-efficient alternative to furnaces and air conditioners. Several types of heat pumps are available, including air-source; geothermal; ductless, mini-split; and absorption heat pumps. Learn more about the different options and how to use your heat pump efficiently to save money and energy at home. Featured Heat Pump Systems A heat pump can provide an alternative to using your air conditioner. | Photo courtesy of iStockPhoto/LordRunar.

324

Control of agricultural nonpoint source pollution in Kranji Catchment, Singapore  

E-Print Network (OSTI)

Singapore's Kranji Reservoir is highly sensitive to nutrient and bacterial pollution, both of which can be directly traced to agricultural runoff. Water quality samples were collected along the main drainage channel in the ...

Hoff, Margaret A. (Margaret Ann)

2013-01-01T23:59:59.000Z

325

Surface Water Management Areas (Virginia) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Surface Water Management Areas (Virginia) Surface Water Management Areas (Virginia) Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General...

326

Relationships between the Irrigation-Pumping Electrical Loads and the Local Climate in Climate Division 9, Idaho  

Science Conference Proceedings (OSTI)

The electrical load from irrigation pumps is an important part of the overall electricity demand in many agricultural areas of the U.S. west. The date the pumps turn on and the total electrical load they present over the summer varies from year ...

Eric J. Alfaro; David W. Pierce; Anne C. Steinemann; Alexander Gershunov

2005-12-01T23:59:59.000Z

327

ELECTRICAL LOAD MANAGEMENT FOR THE CALIFORNIA WATER SYSTEM  

E-Print Network (OSTI)

of Water Resources. Water Conservation in California. DWRUse ENERGY CONSERVATION Water Conservation Pump Efficienciescussion of load Water Conservation some of these measures in

Krieg, B.

2010-01-01T23:59:59.000Z

328

GAS METERING PUMP  

DOE Patents (OSTI)

A liquid piston gas pump is described, capable of pumping minute amounts of gas in accurately measurable quantities. The pump consists of a flanged cylindrical regulating chamber and a mercury filled bellows. Sealed to the ABSTRACTS regulating chamber is a value and having a gas inlet and outlet, the inlet being connected by a helical channel to the bellows. A gravity check valve is in the gas outlet, so the gas passes through the inlet and the helical channel to the bellows where the pumping action as well as the metering is accomplished by the actuation of the mercury filled bellows. The gas then flows through the check valve and outlet to any associated apparatus.

George, C.M.

1957-12-31T23:59:59.000Z

329

Geothermal Heat Pumps  

Energy.gov (U.S. Department of Energy (DOE))

Geothermal heat pumps use the constant temperature of the earth as an exchange medium for heat. Although many parts of the country experience seasonal temperature extremesfrom scorching heat in...

330

Absorption heat pump system  

DOE Patents (OSTI)

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

Grossman, Gershon (Oak Ridge, TN)

1984-01-01T23:59:59.000Z

331

Absorption heat pump system  

DOE Patents (OSTI)

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

Grossman, G.

1982-06-16T23:59:59.000Z

332

Direct nuclear pumped laser  

DOE Patents (OSTI)

There is provided a direct nuclear pumped gas laser in which the lasing mechanism is collisional radiated recombination of ions. The gas laser active medium is a mixture of the gases, with one example being neon and nitrogen.

Miley, George H. (Champagne, IL); Wells, William E. (Urbana, IL); DeYoung, Russell J. (Hampton, VA)

1978-01-01T23:59:59.000Z

333

Heat Pump Systems  

Energy.gov (U.S. Department of Energy (DOE))

Like a refrigerator, heat pumps use electricity to move heat from a cool space into a warm space, making the cool space cooler and the warm space warmer. Because they move heat rather than generate...

334

1981 Winter Meeting - American Society of Agricultural Engineers  

Science Conference Proceedings (OSTI)

The 13 volumes contain 372 papers presented at the meeting. Subjects covered include agricultural machinery developments and applications, irrigation, drainage, water supply, water pollution control, farm buildings, energy conservation, agricultural wastes management, biogas and other biomass fuels production, food products and good products plants, grain drying, solar energy applications, engineering economics, crop yield studies, agronomy, agrometeorology, livestock production and management, computer applications, field and laboratory studies, engineering education, and others. 108 papers are abstracted separately.

Not Available

1981-01-01T23:59:59.000Z

335

Indian Agriculture and Foods  

NLE Websites -- All DOE Office Websites (Extended Search)

Agriculture and Foods Agriculture and Foods Nature Bulletin No. 387-A September 19, 1970 Forest Preserve District of Cook County George W. Dunne, President Roland F. Eisenbeis, Supt. of Conservation INDIAN AGRICULTURE AND FOODS Most of the Indian tribes east of the Great Plains were part-time farmers. Some of them cultivated sunflowers, giant ragweed, canary grass and pigweed for their seeds, which they used as food. Many grew tobacco. But corn, beans and squash -- wherever the climate permitted - - were the principal crops. There were several varieties of beans. They ate both the seeds and rinds of some dozens of kinds of squash and pumpkin. When game was not abundant there was a wealth of wild fruits, berries, and many kinds of wild plants with edible leaves, seeds, or roots. Corn, however, was the ' staff of life" and they depended on corn, beans and squash -- "the three sisters" -- for year-round food.

336

Agriculture | OpenEI  

Open Energy Info (EERE)

Agriculture Agriculture Dataset Summary Description The Energy Statistics Database contains comprehensive energy statistics on the production, trade, conversion and final consumption of primary and secondary; conventional and non-conventional; and new and renewable sources of energy. The Energy Statistics dataset, covering the period from 1990 on, is available at UNdata. This dataset relates to the consumption of alcohol by the transportation industry. Source United Nations (UN) Date Released December 09th, 2009 (5 years ago) Date Updated Unknown Keywords Agriculture Alcohol consumption transportation industry UN Data application/xml icon UN Data: consumption by transportation industry XML (xml, 95 KiB) text/csv icon UN Data: consumption by transportation industry XLS (csv, 21.6 KiB)

337

Water  

NLE Websites -- All DOE Office Websites (Extended Search)

Laws Envirosearch Institutional Controls NEPA Activities RCRA RQ*Calculator Water HSS Logo Water Laws Overview of water-related legislation affecting DOE sites Clean...

338

Ductless, Mini-Split Heat Pump Basics | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ductless, Mini-Split Heat Pump Basics Ductless, Mini-Split Heat Pump Basics Ductless, Mini-Split Heat Pump Basics August 19, 2013 - 11:04am Addthis Ductless, mini-split-system heat pumps (mini splits), as their name implies, do not have ducts. Therefore, they make good retrofit add-ons to houses or buildings with "non-ducted" heating systems, such as hydronic (hot water heat), radiant panels, and space heaters (wood, kerosene, propane). They can also be a good choice for room additions, where extending or installing distribution ductwork is not feasible. How Ductless, Mini-Split Heat Pumps Work Like standard air-source heat pumps, mini splits have two main components: an outdoor compressor/condenser, and an indoor air-handling unit. A conduit, which houses the power cable, refrigerant tubing, suction tubing,

339

Ductless, Mini-Split Heat Pumps | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ductless, Mini-Split Heat Pumps Ductless, Mini-Split Heat Pumps Ductless, Mini-Split Heat Pumps June 24, 2012 - 4:19pm Addthis What does this mean for me? You can take advantage of the fact that -- unlike earlier versions -- newer models of ductless mini-split heat pumps operate effectively in cold temperatures. If you are building an addition or doing a major remodel and your home does not have heating and cooling ducts, a ductless mini-split heat pump may be a cost-effective, energy-efficient choice. Ductless, mini-split-system heat pumps (mini splits) make good retrofit add-ons to houses with "non-ducted" heating systems, such as hydronic (hot water heat), radiant panels, and space heaters (wood, kerosene, propane). They can also be a good choice for room additions where extending or

340

Geothermal pump test facility. Final report, July 1977--July 1978  

DOE Green Energy (OSTI)

The design configuration and fabrication description of a transportable geothermal pump test facility are discussed. The test facility, consisting of a test rig and data acquisition system trailer, provides the user with the unique opportunity to develop and calibrate geothermal pumps with less liability and risk, and at lower cost than would be incurred by actually installing the pump in a geothermal well. Pump tests may be performed using either domestic water, heated by pumping energy, or by using actual geothermal brines supplied directly to the test rig which would be located adjacent to the well. The geothermal pump test facility is completely self supporting and requires only an electrical supply source to become fully operational. Information and discussion presented provide substantive background, design and operational capabilities, and pertinent fabrication details.

Blakemore, R.W.

1978-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "agricultural water pumping" 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

Stable isotope and groundwater flow dynamics of agricultural irrigation recharge into groundwater resources of the Central Valley, California  

Science Conference Proceedings (OSTI)

Intensive agricultural irrigation and overdraft of groundwater in the Central Valley of California profoundly affect the regional quality and availability of shallow groundwater resources. In the natural state, the {delta}{sup 18}O values of groundwater were relatively homogeneous (mostly -7.0 {+-} 0.5{per_thousand}), reflecting local meteoric recharge that slowly (1-3m/yr) flowed toward the valley axis. Today, on the west side of the valley, the isotope distribution is dominated by high {sup 18}O enclosures formed by recharge of evaporated irrigation waters, while the east side has bands of low {sup 18}O groundwater indicating induced recharge from rivers draining the Sierra Nevada mountains. Changes in {delta}{sup 18}O values caused by the agricultural recharge strongly correlate with elevated nitrate concentrations (5 to >100 mg/L) that form pervasive, non-point source pollutants. Small, west-side cities dependent solely on groundwater resources have experienced increases of >1.0 mg/L per year of nitrate for 10-30 years. The resultant high nitrates threaten the economical use of the groundwater for domestic purposes, and have forced some well shut-downs. Furthermore, since >80% of modern recharge is now derived from agricultural irrigation, and because modern recharge rates are {approximately}10 times those of the natural state, agricultural land retirement by urbanization will severely curtail the current safe-yields and promote overdraft pumping. Such overdrafting has occurred in the Sacramento metropolitan area for {approximately}40 years, creating cones of depression {approximately}25m deep. Today, groundwater withdrawal in Sacramento is approximately matched by infiltration of low {sup 18}O water (-11.0{per_thousand}) away from the Sacramento and American Rivers, which is estimated to occur at 100-300m/year from the sharp {sup 18}O gradients in our groundwater isotope map.

Davisson, M.L.; Criss, R.E.

1995-01-01T23:59:59.000Z

342

Best Practices for Energy Efficient Cleanrooms: Control of Chilled Water System  

E-Print Network (OSTI)

for cleanrooms and their adjacent spaces. Chillers 39% Cooling Towers 7% Pumps 17% MUAH + RCU Fans 9% Hot Water;chilled water pumps, secondary loop chilled water pumps, condenser water pumps, and cooling towers for water-cooled chillers. While nominal energy efficiency ratings of individual component influence

343

Well-pump alignment system  

DOE Patents (OSTI)

An improved well-pump for geothermal wells, an alignment system for a well-pump, and to a method for aligning a rotor and stator within a well-pump are disclosed, wherein the well-pump has a whistle assembly formed at a bottom portion thereof, such that variations in the frequency of the whistle, indicating misalignment, may be monitored during pumping. 6 figs.

Drumheller, D.S.

1998-10-20T23:59:59.000Z

344

Agriculture: Tendencies & Deficiencies  

E-Print Network (OSTI)

Agriculture: Tendencies & Deficiencies Tad Patzek, Petroleum & Geosystems Engineering, UT Austin of Conclusions, cntd. The main energy crops I have looked at are maize, sugarcane, soybeans, and oil palms are witnessing a global move away from food to energy crops. Diverting more land to pure energy crops

Patzek, Tadeusz W.

345

Geothermal groundwater heat pump. Equipment selection procedures for architects, designers and contractors  

SciTech Connect

This brochure covers the following: the way the heat pump works, why use groundwater, groundwater availability and disposal, regulations, the coefficient of performance, heat pump maintenance and reliability, heating and cooling load calculations, fuel requirement calculations, choice of equipment, calculation of water flow requirement, well pump and supply/return pipes, and design examples. (MHR)

1981-01-01T23:59:59.000Z

346

WARMWASSER ERNEUERBARE ENERGIEN KLIMA RAUMHEIZUNG Adsorption Heat-Pumps for domestic heating  

E-Print Network (OSTI)

Energies > Instantaneous water heaters > www.stiebel-eltron.de #12;4 Motivation Gas condensing boiler HP for hot water and enhancing the heating system > From the regarded sources, solar is the best suited burner with heat pump unit > Solar hot water tank > Heat pump-unit t

Oak Ridge National Laboratory

347

Pumping performance of a new type of hybrid molecular pump  

Science Conference Proceedings (OSTI)

A new type of hybrid molecular pump of high performance and reliability has been developed. The pumps rotational speed is 18?000 rpm. The pump is constructed with eleven stages of a turbomolecular pump and a drum multigroove drum molecular pump in which the clearance between rotor and stationary part is 0.35 mm; the rotors deformation forms a cuneiform channel of the proper working clearance to ensure the pumps performance and working reliability. The pump can operate within the pressure range of 510210?6 Pa for a oil?free vacuum with the maximum speed of 400 l/s. The maximum compression ratio for H2 is over 4000. It can be widely used in vacuum processes

Dechun Ba; Naiheng Yang; Xiaodong Wang; Shijin Pang; Yu Zhu; Xiaozhen Wang

1992-01-01T23:59:59.000Z

348

Virginia Tech Hot Water Report  

NLE Websites -- All DOE Office Websites (Extended Search)

The team chose to use a water-to-water heat pump (WWHP) connected to an earth coupled heat exchanger to provide water heating. This system provides not only domestic hot water...

349

Agricultural Microscopy Division Newsletter September 2013  

Science Conference Proceedings (OSTI)

Read the latest news from the Agricultural Microscopy division. Agricultural Microscopy Division Newsletter September 2013 Agricultural Microscopy Division Newsletter September 2013 ...

350

Mechanical Compression Heat Pumps  

E-Print Network (OSTI)

Mechanical compression heat pumping is not new in industrial applications. In fact, industry history suggests that the theoretical concept was developed before 1825. Heat pump manufacturers gained the support of consultants and end-users when the energy crisis hit this country in 1973. That interest, today, has been dampened because there is a current abundance of the basic sources of industrial energy (namely oil and natural gas). Meanwhile, Mycom used the window of the current opportunities to develop, design and test compressors built to meet the needs of the mechanically demanding industrial heat pump applications which often require high compression ratios and temperatures in excess of 200 degrees F. This paper will review the theoretical foundation for heat pumps and present the mechanical and thermal requirements of the compressors which constitute the heart and soul of the system. It will also provide a quick survey of the available types of compressors for heat pumping and some of the industrial processes where simultaneous heating and cooling proceed along parallel demand paths. The case history will examine the system flexibility and the economic advantages realized in a barley malting process.

Apaloo, T. L.; Kawamura, K.; Matsuda, J.

1986-06-01T23:59:59.000Z

351

Underground pumped hydroelectric storage  

DOE Green Energy (OSTI)

Underground pumped hydroelectric energy storage was conceived as a modification of surface pumped storage to eliminate dependence upon fortuitous topography, provide higher hydraulic heads, and reduce environmental concerns. A UPHS plant offers substantial savings in investment cost over coal-fired cycling plants and savings in system production costs over gas turbines. Potential location near load centers lowers transmission costs and line losses. Environmental impact is less than that for a coal-fired cycling plant. The inherent benefits include those of all pumped storage (i.e., rapid load response, emergency capacity, improvement in efficiency as pumps improve, and capacity for voltage regulation). A UPHS plant would be powered by either a coal-fired or nuclear baseload plant. The economic capacity of a UPHS plant would be in the range of 1000 to 3000 MW. This storage level is compatible with the load-leveling requirements of a greater metropolitan area with population of 1 million or more. The technical feasibility of UPHS depends upon excavation of a subterranean powerhouse cavern and reservoir caverns within a competent, impervious rock formation, and upon selection of reliable and efficient turbomachinery - pump-turbines and motor-generators - all remotely operable.

Allen, R.D.; Doherty, T.J.; Kannberg, L.D.

1984-07-01T23:59:59.000Z

352

Agricultural Microscopy Newsletter March 11  

Science Conference Proceedings (OSTI)

AOCS Agricultural Microscopy Division Newsletter March 2011 Greetings from the Chairperson The Agricultural Microscopy Division would like to take this opportunity to express our sincere sympathy to the family and friends of George Liepa who rece

353

ROCKY MOUNTAIN OILFIELD TESTING CENTER Texaco Dual Action Pumping System  

NLE Websites -- All DOE Office Websites (Extended Search)

Texaco Dual Action Pumping System Texaco Dual Action Pumping System PROJECT TEST RESULTS March 16, 1998 Michael R. Tyler Project Manager Abstract The Texaco Dual Action Pumping System (DAPS) is designed to separate water from the oil in the casing-tubing annulas and inject most of the water into a lower formation while lifting the oil and remaining water to the surface. As oil production declines in a well the water production can increase. The lifting cost can be reduced per barrel of oil if less water is brought to the surface and processed. The DAPS was installed in a well that had been producing four (4) barrels of oil per day (bopd) and 46 barrels of water per day (bwpd), from the zone that became the injection zone. The well was recompleted in a shallower zone that was expected to yield an excessive quantity of

354

Wind energy applications in agriculture  

DOE Green Energy (OSTI)

Separate abstract are included for each of the papers presented concerning the use of wind turbines in agriculture.

Kluter, H.H.; Soderholm, L.H. (eds.)

1979-01-01T23:59:59.000Z

355

Kosciusko REMC - Residential Geothermal and Air-source Heat Pump Rebate  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Kosciusko REMC - Residential Geothermal and Air-source Heat Pump Kosciusko REMC - Residential Geothermal and Air-source Heat Pump Rebate Program Kosciusko REMC - Residential Geothermal and Air-source Heat Pump Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Heat Pumps Appliances & Electronics Water Heating Maximum Rebate Maximum of two rebates per household Program Info State Indiana Program Type Utility Rebate Program Rebate Amount Geothermal System: $250 Air-Source Heat Pump: $150 Electric Water Heater: $75 - $125 Provider Kosciusko REMC Kosciusko REMC offers rebates (as bill credits) to residential members for the purchase and installation of high efficiency air-source heat pumps, geothermal heat pumps, and electric water heaters. For each purchase of an

356

Velocity pump reaction turbine  

DOE Patents (OSTI)

An expanding hydraulic/two-phase velocity pump reaction turbine including a dual concentric rotor configuration with an inter-rotor annular flow channel in which the inner rotor is mechanically driven by the outer rotor. In another embodiment, the inner rotor is immobilized and provided with gas recovery ports on its outer surface by means of which gas in solution may be recovered. This velocity pump reaction turbine configuration is capable of potential energy conversion efficiencies of up to 70%, and is particularly suited for geothermal applications.

House, Palmer A. (Walnut Creek, CA)

1982-01-01T23:59:59.000Z

357

Velocity pump reaction turbine  

DOE Patents (OSTI)

An expanding hydraulic/two-phase velocity pump reaction turbine including a dual concentric rotor configuration with an inter-rotor annular flow channel in which the inner rotor is mechanically driven by the outer rotor. In another embodiment, the inner rotor is immobilized and provided with gas recovery ports on its outer surface by means of which gas in solution may be recovered. This velocity pump reaction turbine configuration is capable of potential energy conversion efficiencies of up to 70%, and is particularly suited for geothermal applications.

House, Palmer A. (Walnut Creek, CA)

1984-01-01T23:59:59.000Z

358

Fusion reactor pumped laser  

DOE Patents (OSTI)

A nuclear pumped laser capable of producing long pulses of very high power laser radiation is provided. A toroidal fusion reactor provides energetic neutrons which are slowed down by a moderator. The moderated neutrons are converted to energetic particles capable of pumping a lasing medium. The lasing medium is housed in an annular cell surrounding the reactor. The cell includes an annular reflecting mirror at the bottom and an annular output window at the top. A neutron reflector is disposed around the cell to reflect escaping neutrons back into the cell. The laser radiation from the annular window is focused onto a beam compactor which generates a single coherent output laser beam.

Jassby, Daniel L. (Princeton, NJ)

1988-01-01T23:59:59.000Z

359

Acoustical heat pumping engine  

DOE Patents (OSTI)

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

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

1983-08-16T23:59:59.000Z

360

Acoustical heat pumping engine  

DOE Patents (OSTI)

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

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

1983-08-16T23:59:59.000Z

Note: This page contains sample records for the topic "agricultural water pumping" 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

Cedarburg Light & Water Utility - Commercial Energy Efficiency...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Energy Efficiency Rebate Program Cedarburg Light & Water Utility - Commercial Energy Efficiency Rebate Program Eligibility Agricultural Commercial Fed. Government Industrial Local...

362

Water Quality (Louisiana) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Quality (Louisiana) Water Quality (Louisiana) Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General PublicConsumer Industrial Installer...

363

Water Quality (Oklahoma) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

(Oklahoma) Water Quality (Oklahoma) Eligibility Agricultural Commercial Construction Fuel Distributor General PublicConsumer Industrial InstallerContractor Institutional...

364

Water Pollution Control (Indiana) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

(Indiana) Water Pollution Control (Indiana) Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General PublicConsumer Industrial Installer...

365

Water Resource Management (Indiana) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Resource Management (Indiana) Water Resource Management (Indiana) Eligibility Agricultural Commercial Construction Fuel Distributor Industrial InstallerContractor Investor-Owned...

366

Water Quality Standards Implementation (Oklahoma) | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Implementation (Oklahoma) Water Quality Standards Implementation (Oklahoma) Eligibility Agricultural Construction Fuel Distributor Industrial InstallerContractor Investor-Owned...

367

Commonwealth Solar Hot Water Commercial Program | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Commercial Program Commonwealth Solar Hot Water Commercial Program Eligibility Agricultural Commercial Fed. Government Industrial Local Government Multi-Family Residential...

368

Geothermal Heat Pump Tax Credit (Personal) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

You are here You are here Home » Geothermal Heat Pump Tax Credit (Personal) Geothermal Heat Pump Tax Credit (Personal) < Back Eligibility Agricultural Commercial Residential Maximum Rebate 9,000 per system Annual aggregate cap of 2 million in total personal and corporate tax credits. Program Info Start Date 1/1/2010 Expiration Date 12/31/2020 State New Mexico Program Type Personal Tax Credit Rebate Amount 30% Provider New Mexico Energy, Minerals and Natural Resources Department [http://www.emnrd.state.nm.us/ECMD/LawsRegulationsExecutiveOrders/documen... HB 375], signed in April 2009, created a tax credit in New Mexico for geothermal heat pumps purchased and installed between January 1, 2010 and December 31, 2020 on property owned by the tax payer. The credit is worth 30% of the system's cost up to $9,000 and can be applied to individual or

369

Oklahoma Municipal Power Authority - Geothermal Heat Pump Rebate Program |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Oklahoma Municipal Power Authority - Geothermal Heat Pump Rebate Oklahoma Municipal Power Authority - Geothermal Heat Pump Rebate Program Oklahoma Municipal Power Authority - Geothermal Heat Pump Rebate Program < Back Eligibility Agricultural Commercial Industrial Residential Maximum Rebate 1,000/ton Program Info Funding Source American Recovery and Reinvestment Act of 2009 State Oklahoma Program Type Utility Rebate Program Rebate Amount $800 - $1,000/ton Provider Oklahoma Municipal Power Authority Program funds currently exhausted, additional funds have been requested. Visit the program website for the most up to date information on fund availability and to register for the waiting list for this program. The Oklahoma Municipal Power Authority (OMPA) and the Oklahoma Department of Commerce currently offer the Oklahoma Comfort Program for geothermal

370

Pumped oil feed systems for rotary vacuum pumps  

Science Conference Proceedings (OSTI)

Pumped oil feed systems developed by the authors and their colleagues provide positive lubrication under all inlet pressure conditions

H. Wycliffe; B. D. Power

1981-01-01T23:59:59.000Z

371

Explosively pumped laser light  

DOE Patents (OSTI)

A single shot laser pumped by detonation of an explosive in a shell casing. The shock wave from detonation of the explosive causes a rare gas to luminesce. The high intensity light from the gas enters a lasing medium, which thereafter outputs a pulse of laser light to disable optical sensors and personnel.

Piltch, Martin S. (Los Alamos, NM); Michelotti, Roy A. (Los Alamos, NM)

1991-01-01T23:59:59.000Z

372

Shrouded inducer pump  

DOE Patents (OSTI)

An improvement in a pump is described including a shrouded inducer, the improvement comprising first and second sealing means which cooperate with a first vortex cell and a series of secondary vortex cells to remove any tangential velocity components from the recirculation flow. 3 figs.

Meng, S.Y.

1989-08-08T23:59:59.000Z

373

Linear induction pump  

DOE Patents (OSTI)

Electromagnetic linear induction pump for liquid metal which includes a unitary pump duct. The duct comprises two substantially flat parallel spaced-apart wall members, one being located above the other and two parallel opposing side members interconnecting the wall members. Located within the duct are a plurality of web members interconnecting the wall members and extending parallel to the side members whereby the wall members, side members and web members define a plurality of fluid passageways, each of the fluid passageways having substantially the same cross-sectional flow area. Attached to an outer surface of each side member is an electrically conductive end bar for the passage of an induced current therethrough. A multi-phase, electrical stator is located adjacent each of the wall members. The duct, stators, and end bars are enclosed in a housing which is provided with an inlet and outlet in fluid communication with opposite ends of the fluid passageways in the pump duct. In accordance with a preferred embodiment, the inlet and outlet includes a transition means which provides for a transition from a round cross-sectional flow path to a substantially rectangular cross-sectional flow path defined by the pump duct.

Meisner, John W. (Newbury Park, CA); Moore, Robert M. (Canoga Park, CA); Bienvenue, Louis L. (Chatsworth, CA)

1985-03-19T23:59:59.000Z

374

Barron Electric Cooperative - Commercial, Industrial, and Agricultural...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Industrial, and Agricultural Energy Efficiency Rebate Program Barron Electric Cooperative - Commercial, Industrial, and Agricultural Energy Efficiency Rebate Program...

375

GEOTHERMAL HEAT PUMP GROUTING MATERIALS  

DOE Green Energy (OSTI)

The thermal conductivity of cementitious grouts has been investigated in order to determine suitability of these materials for grouting vertical boreholes used with geothermal heat pumps. The roles of mix variables such as water/cement ratio, sand/cement ratio and superplasticizer dosage were measured. The cement-sand grouts were also tested for rheological characteristics, bleeding, permeability, bond to HDPE pipe, shrinkage, coefficient of thermal expansion, exotherm, durability and environmental impact. This paper summarizes the thermal conductivity, permeability, bonding and exotherm data for selected cementitious grouts. The theoretical reduction in bore length that could be achieved with the BNL-developed cement-sand grouts is examined. Finally, the FY 98 research and field trials are discussed.

ALLAN,M.

1998-04-01T23:59:59.000Z

376

Geothermal heat pump grouting materials  

Science Conference Proceedings (OSTI)

The thermal conductivity of cementitious grouts has been investigated in order to determine suitability of these materials for grouting vertical boreholes used with geothermal heat pumps. The roles of mix variables such as water/cement ratio, sand/cement ratio and superplasticizer dosage were measured. The cement-sand grouts were also tested for rheological characteristics, bleeding, permeability, bond to HDPE pipe, shrinkage, coefficient of thermal expansion, exotherm, durability and environmental impact. This paper summarizes the thermal conductivity, permeability, bonding and exotherm data for selected cementitious grouts. The theoretical reduction in bore length that could be achieved with the BNL-developed cement-sand grouts is examined. Finally, the FY 98 research and field trials are discussed.

Allan, M.

1998-08-01T23:59:59.000Z

377

National Smart Water Grid  

DOE Green Energy (OSTI)

The United States repeatedly experiences floods along the Midwest's large rivers and droughts in the arid Western States that cause traumatic environmental conditions with huge economic impact. With an integrated approach and solution these problems can be alleviated. Tapping into the Mississippi River and its tributaries, the world's third largest fresh water river system, during flood events will mitigate the damage of flooding and provide a new source of fresh water to the Western States. The trend of increased flooding on the Midwest's large rivers is supported by a growing body of scientific literature. The Colorado River Basin and the western states are experiencing a protracted multi-year drought. Fresh water can be pumped via pipelines from areas of overabundance/flood to areas of drought or high demand. Calculations document 10 to 60 million acre-feet (maf) of fresh water per flood event can be captured from the Midwest's Rivers and pumped via pipelines to the Colorado River and introduced upstream of Lake Powell, Utah, to destinations near Denver, Colorado, and used in areas along the pipelines. Water users of the Colorado River include the cities in southern Nevada, southern California, northern Arizona, Colorado, Utah, Indian Tribes, and Mexico. The proposed start and end points, and routes of the pipelines are documented, including information on right-of-ways necessary for state and federal permits. A National Smart Water Grid{trademark} (NSWG) Project will create thousands of new jobs for construction, operation, and maintenance and save billions in drought and flood damage reparations tax dollars. The socio-economic benefits of NWSG include decreased flooding in the Midwest; increased agriculture, and recreation and tourism; improved national security, transportation, and fishery and wildlife habitats; mitigated regional climate change and global warming such as increased carbon capture; decreased salinity in Colorado River water crossing the US-Mexico border; and decreased eutrophication (excessive plant growth and decay) in the Gulf of Mexico to name a few. The National Smart Water Grid{trademark} will pay for itself in a single major flood event.

Beaulieu, R A

2009-07-13T23:59:59.000Z

378

SURVEY OF SODIUM PUMP TECHNOLOGY  

SciTech Connect

A review is presented of the current status of sodium pump development as related to nuclear power applications. A description is given of the design features and performance characteristics of the more important types of sodium and sodium-- potassium alloy (NaK) pumps. Some requirements for sodium pumps for future large liquid metal reactor systems are presented with some preliminary consideration of the potential of various pump types to meet these requirements. (auth)

Nixon, D.R.

1963-06-01T23:59:59.000Z

379

Energy 101: Geothermal Heat Pumps | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Energy 101: Geothermal Heat Pumps Energy 101: Geothermal Heat Pumps Energy 101: Geothermal Heat Pumps January 4, 2011 - 12:15pm Addthis An energy-efficient heating and cooling alternative, the geothermal heat pump system moves heat from the ground to a building (or from a building to the ground) through a series of flexible pipe "loops" containing water. This edition of Energy 101 explores the benefits Geothermal and the science behind how it all comes together. John Schueler John Schueler Former New Media Specialist, Office of Public Affairs Quick Facts Heat pump systems can lower energy bills by up to 70% over traditional types of heating systems. During this time of year, many homeowners are searching for ways to reduce steep heating costs. One of the options they should consider during the

380

Energy 101: Geothermal Heat Pumps | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Energy 101: Geothermal Heat Pumps Energy 101: Geothermal Heat Pumps Energy 101: Geothermal Heat Pumps January 4, 2011 - 12:15pm Addthis An energy-efficient heating and cooling alternative, the geothermal heat pump system moves heat from the ground to a building (or from a building to the ground) through a series of flexible pipe "loops" containing water. This edition of Energy 101 explores the benefits Geothermal and the science behind how it all comes together. John Schueler John Schueler Former New Media Specialist, Office of Public Affairs Quick Facts Heat pump systems can lower energy bills by up to 70% over traditional types of heating systems. During this time of year, many homeowners are searching for ways to reduce steep heating costs. One of the options they should consider during the

Note: This page contains sample records for the topic "agricultural water pumping" 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 101: Geothermal Heat Pumps | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Geothermal Heat Pumps Geothermal Heat Pumps Energy 101: Geothermal Heat Pumps Addthis Description An energy-efficient heating and cooling alternative, the geothermal heat pump system moves heat from the ground to a building (or from a building to the ground) through a series of flexible pipe "loops" containing water. This edition of Energy 101 explores the benefits Geothermal and the science behind how it all comes together. Duration 2:32 Topic Tax Credits, Rebates, Savings Heating & Cooling Geothermal Consumption Credit Energy Department Video MR. : We all want to save money heating or cooling our house or office, right? The answer may be under your feet, literally. Much of the heating and cooling can come from the ground, below the surface, with something called a geothermal heat pump. You see, below the frost line

382

FAO-Modelling System for Agricultural Impacts of Climate Change (MOSAICC) |  

Open Energy Info (EERE)

FAO-Modelling System for Agricultural Impacts of Climate Change (MOSAICC) FAO-Modelling System for Agricultural Impacts of Climate Change (MOSAICC) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: FAO-Modelling System for Agricultural Impacts of Climate Change (MOSAICC) Agency/Company /Organization: Food and Agriculture Organization of the United Nations Sector: Climate, Land, Water Focus Area: Agriculture Topics: Co-benefits assessment Resource Type: Software/modeling tools User Interface: Desktop Application Website: www.fao.org/climatechange/mosaicc/66705/en/ FAO-Modelling System for Agricultural Impacts of Climate Change (MOSAICC) Screenshot References: FAO-Modelling System for Agricultural Impacts of Climate Change (MOSAICC)[1] "FAO-MOSAICC (for MOdelling System for Agricultural Impacts of Climate Change) is a system of models designed to carry out each step of the impact

383

BOILING WATER REACTOR WITH FEED WATER INJECTION NOZZLES  

DOE Patents (OSTI)

This patent covers the use of injection nozzles for pumping water into the lower ends of reactor fuel tubes in which water is converted directly to steam. Pumping water through fuel tubes of this type of boiling water reactor increases its power. The injection nozzles decrease the size of pump needed, because the pump handles only the water going through the nozzles, additional water being sucked into the tubes by the nozzles independently of the pump from the exterior body of water in which the fuel tubes are immersed. The resulting movement of exterior water along the tubes holds down steam formation, and thus maintains the moderator effectiveness, of the exterior body of water. (AEC)

Treshow, M.

1963-04-30T23:59:59.000Z

384

Irrigation Training Program For Texas Agricultural Producers  

E-Print Network (OSTI)

The Irrigation Training Program, funded by the Texas Water Development Board (TWDB) through an Agricultural Water Conservation Grant, began in 2006. Administered by the Texas Water Resources Institute (TWRI), the Texas State Soil and Water Conservation Board (TSSWCB), the local Soil and Water Conservation Districts (SWCDs), United States Department of Agriculture-Natural Resources Conservation Service (USDA-NRCS), Texas AgriLife Extension Service (Extension) and Texas AgriLife Research (Research) worked together to build a multi-disciplinary Irrigation Training Program (ITP) that included development of a core manual and training conferences that were designed to meet regional needs. The three year project was divided into four main tasks with separate objectives and deliverables. Under Task 1, the TSSWCB, SWCDs and USDA-NRCS supported the development and implementation of the Irrigation Training Program. Task 2 required TWRI, Extension and Research, in cooperation with the TSSWCB and USDA-NRCS to identify primary agency personnel to provide training and the key conference sites. To meet the objective of Task 3, TWRI, Extension and Research, in cooperation with the TSSWCB and USDA-NRCS developed the Irrigation Training Program manual and promoted irrigation training conferences. And finally, TWRI, Extension and Research, in cooperation with the TSSWCB and USDA-NRCS implemented the Irrigation Training Program through the delivery of six irrigation conferences to meet the task 4 goals.

Harris, B.L.

2010-02-01T23:59:59.000Z

385

Reduce Pumping Costs through Optimum Pipe Sizing  

SciTech Connect

BestPractices Program tip sheet discussing pumping system efficiency by reducing pumping costs through optimum pipe sizing.

2005-10-01T23:59:59.000Z

386

Select an Energy-Efficient Centrifugal Pump  

SciTech Connect

BestPractices Program tip sheet discussing pumping system efficiency by selecting an energy-efficient centrifugal pump.

2005-10-01T23:59:59.000Z

387

SHINE VACUUM PUMP TEST VERIFICATION  

Science Conference Proceedings (OSTI)

Normetex pumps used world-wide for tritium service are no longer available. DOE and other researchers worldwide have spent significant funds characterizing this pump. Identification of alternate pumps is required for performance and compatibility with tritium gas. Many of the pumps that could be used to meet the functional performance requirements (e.g. pressure and flow conditions) of the Normetex pump have features that include the use of polymers or oils and greases that are not directly compatible with tritium service. This study assembles a test system to determine the flow characteristics for candidate alternate pumps. These tests are critical to the movement of tritium through the SHINE Tritium Purification System (TPS). The purpose of the pump testing is two-fold: (1) obtain baseline vacuum pump characteristics for an alternate (i.e. ?Normetex replacement?) pump intended for use in tritium service; and (2) verify that low pressure hydrogen gas can be transported over distances up to 300 feet by the candidate pumps. Flow rates and nominal system pressures have been identified for the SHINE Mo-99 production process Tritium Purification System (TPS). To minimize the line sizes for the transfer of low pressure tritium from the Neutron Driver Accelerator System (NDAS) to the primary processing systems in the TPS, a ?booster? pump has been located near the accelerator in the design. A series of pump tests were performed at various configurations using hydrogen gas (no tritium) to ensure that this concept is practical and maintains adequate flow rates and required pressures. This report summarizes the results of the tests that have been performed using various pump configurations. The current design of the Tritium Purification System requires the ?booster? pump to discharge to or to be backed by another vacuum pump. Since Normetex pumps are no longer manufactured, a commercially available Edwards scroll pump will be used to back the booster pump. In this case the ?booster pump? is an Adixen Molecular Drag Pump (MDP 5011) and the backing pump is an Edwards (nXDS15iC) scroll pump. Various configurations of the two pumps and associated lengths of ? inch tubing (0 feet to 300 feet) were used in combination with hydrogen and nitrogen flow rates ranging from 25-400 standard cubic centimeters per minute (sccm) to determine whether the proposed pump configuration meets the design criteria for SHINE. The results of this study indicate that even under the most severe conditions (300 feet of tubing and 400 sccm flow rate) the Adixen 5011 MDP can serve as a booster pump to transport gases from the accelerator (NDAS) to the TPS. The Target Gas Receiving System pump (Edwards nXDS15iC) located approximately 300 feet from the accelerator can effectively back the Adixen MDP. The molecular drag pump was able to maintain its full rotational speed even when the flow rate was 400 sccm hydrogen or nitrogen and 300 feet of tubing was installed between the drag pump and the Edwards scroll pump. In addition to maintaining adequate rotation, the pressure in the system was maintained below the target pressure of 30 torr for all flow rates, lengths of tubing, and process gases. This configuration is therefore adequate to meet the SHINE design requirements in terms of flow and pressure.

Morgan, G.; Peters, B.

2013-09-30T23:59:59.000Z

388

Evaluating the energy and carbon footprint of water conveyance system and future water supply options for Las Vegas, Nevada.  

E-Print Network (OSTI)

??Water production requires the use of energy to transport water from distant locations, pump groundwater from deep aquifers and treat water to meet stringent drinking (more)

Shrestha, Eleeja

2010-01-01T23:59:59.000Z

389

The Drinking Water Security and Safety Amendments of 2002: Is America's Drinking Water Infrastructure Safer Four Years Later?  

E-Print Network (OSTI)

pumping station, or water intake could deprive large areasthe pre-treatment and water intake part of the system; and 'around intakes; intruder resis- tant fences enclosing water

Shermer, Steven D.

2006-01-01T23:59:59.000Z

390

Pump Systems Optimization: Energy Efficiency  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Pump Systems Pump Systems Optimization: Energy Efficiency and Bottom-Line Savings Host this one-day course to help participants learn how to identify and reduce hidden operation and energy costs. Participants will: * Identify energy savings * Increase profitability * Increase reliability * Earn seven PDH credits Attendees of the "Pump Systems Optimization" one-day course will gain valuable new skills to help them improve centrifugal pump system efficiency to reduce energy and operating costs while earning seven professional development hour (PDH) credits from the Hydraulic Institute. Topics covered include:* * Why Efficient Pump Systems Are Important

391

Dual valve well pump installation  

SciTech Connect

A reciprocating electric motor-pump assembly for lifting well fluid on downstroke of the motor pump assembly, the pump including a barrel below the motor having dual combined inlet and outlet valve means at the lower end thereof, the pump piston moving in the barrel having annular grooves therearound to prevent differential pressure sticking, the electric cable supplying the electric motor being tubular to vent the pump and prevent vacuum or gas lock, there being a packer about the valve barrel separating the outlet valve means thereabove from the inlet valve means therebelow and a packer above the motor about a production tubing including an upper standing valve.

Holm, D. R.

1985-10-22T23:59:59.000Z

392

Save by absorption heat pumping  

SciTech Connect

The author compares absorption heat pumping (AHP) to mechanical vapor compressor (MVC) heat pumping. The moving part of the AHP is a pump easy to maintain and inexpensive to spare. The mechanical component of the MVC is a vapor compressor which requires more maintenance and is cost-prohibitive to spare. Also, in the MVC system, a purified product stream is heat pumped in an open compressor, thus risking product contamination. In the AHP system, the cold and hot utilities are heat pumped. Therefore, product integrity with an AHP system is well protected as in a conventional fractionation column.

Davidson, W.F.; Campagne, W.V.L.

1987-12-01T23:59:59.000Z

393

Microhydropower Turbine, Pump, and Waterwheel Basics | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Microhydropower Turbine, Pump, and Waterwheel Basics Microhydropower Turbine, Pump, and Waterwheel Basics Microhydropower Turbine, Pump, and Waterwheel Basics August 16, 2013 - 3:58pm Addthis A microhydropower system needs a turbine, pump, or waterwheel to transform the energy of flowing water into rotational energy, which is then converted into electricity. Turbines Turbines are commonly used to power microhydropower systems. The moving water strikes the turbine blades, much like a waterwheel, to spin a shaft. But turbines are more compact in relation to their energy output than waterwheels. They also have fewer gears and require less material for construction. There are two general types of turbines: impulse and reaction. Impulse Turbines Impulse turbines, which have the least complex design, are most commonly

394

Microhydropower Turbine, Pump, and Waterwheel Basics | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Microhydropower Turbine, Pump, and Waterwheel Basics Microhydropower Turbine, Pump, and Waterwheel Basics Microhydropower Turbine, Pump, and Waterwheel Basics August 16, 2013 - 3:58pm Addthis A microhydropower system needs a turbine, pump, or waterwheel to transform the energy of flowing water into rotational energy, which is then converted into electricity. Turbines Turbines are commonly used to power microhydropower systems. The moving water strikes the turbine blades, much like a waterwheel, to spin a shaft. But turbines are more compact in relation to their energy output than waterwheels. They also have fewer gears and require less material for construction. There are two general types of turbines: impulse and reaction. Impulse Turbines Impulse turbines, which have the least complex design, are most commonly

395

Fusion reactor pumped laser  

DOE Patents (OSTI)

A nuclear pumped laser capable of producing long pulses of very high power laser radiation is provided. A toroidal fusion reactor provides energetic neutrons which are slowed down by a moderator. The moderated neutrons are converted to energetic particles capable of pumping a lasing medium. The lasing medium is housed in an annular cell surrounding the reactor. The cell includes an annular reflecting mirror at the bottom and an annular output window at the top. A neutron reflector is disposed around the cell to reflect escaping neutrons back into the cell. The laser radiation from the annular window is focused onto a beam compactor which generates a single coherent output laser beam. 10 figs.

Jassby, D.L.

1987-09-04T23:59:59.000Z

396

Multiple source heat pump  

DOE Patents (OSTI)

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

Ecker, Amir L. (Duncanville, TX)

1983-01-01T23:59:59.000Z

397

Hydride heat pump  

DOE Patents (OSTI)

Method and apparatus for the use of hydrides to exhaust heat from one temperature source and deliver the thermal energy extracted for use at a higher temperature, thereby acting as a heat pump. For this purpose there are employed a pair of hydridable metal compounds having different characteristics working together in a closed pressure system employing a high temperature source to upgrade the heat supplied from a low temperature source.

Cottingham, James G. (Center Moriches, NY)

1977-01-01T23:59:59.000Z

398

Water Quality Act (Montana) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Water Quality Act (Montana) Water Quality Act (Montana) Eligibility Utility Fed. Government Commercial Agricultural Investor-Owned Utility StateProvincial Govt Industrial...

399

Thermoeconomic Analysis of a Solar Heat-Pump System  

E-Print Network (OSTI)

This paper introduces a solar energy heat-pump system and analyzes the thermoeconomics. The results show that the solar energy heat-pump system can be operated in different modes and used for room heating in winter and cooling in summer and/or heating a hot water supply. The results also show that the efficiency of the system's components and how the investment costs greatly affect the wide acceptability and use of the system. Solar energy is clean and renewable and having not to pay the solar energy costs, the solar energy heat-pump system is still attractive and will have a large market.

Gao, Y.; Wang, S.

2006-01-01T23:59:59.000Z

400

Thermally activated heat pumps  

SciTech Connect

This article describes research to develop efficient gas-fired heat pumps heat and cool buildings without CFCs. Space heating and cooling use 46% of all energy consumed in US buildings. Air-conditioning is the single leading cause of peak demand for electricity and is a major user of chlorofluorocarbons (CFCs). Advanced energy conversion technology can save 50% of this energy and eliminate CFCs completely. Besides saving energy, advanced systems substantially reduce emissions of carbon dioxide (a greenhouse gas), sulfur dioxide, and nitrogen oxides, which contribute to smog and acid rain. These emissions result from the burning of fossil fuels used to generate electricity. The Office of Building Technologies (OBT) of the US Department of Energy supports private industry`s efforts to improve energy efficiency and increase the use of renewable energy in buildings. To help industry, OBT, through the Oak Ridge National Laboratory, is currently working on thermally activated heat pumps. OBT has selected the following absorption heat pump systems to develop: generator-absorber heat-exchange (GAX) cycle for heating-dominated applications in residential and light commercial buildings; double-condenser-coupled (DCC) cycle for commercial buildings. In addition, OBT is developing computer-aided design software for investigating the absorption cycle.

NONE

1995-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "agricultural water pumping" 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

California Agriculture: Dimensions and Issues  

E-Print Network (OSTI)

Agriculture 1959. California, Vol. 1, Part 48. ----------.of Population, California, Vol. 1, Part 6. ----------. 1990Vol. 12, No. 67, 1888. California Committee to Survey the

Siebert,, Jerome Editor

2003-01-01T23:59:59.000Z

402

Heat Pump Water Heaters | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

with a small chamber on top and a larger one on the bottom. In the top chamber are a fan, a cylindrical compressor, and an evaporator that runs along the inside of the chamber....

403

Development of solar assisted heat pumps for the heating and cooling of buildings. Volume II. Final technical report, February 1, 1978-June 30, 1980  

DOE Green Energy (OSTI)

A second volume containing the appendices to the report on the development of high efficiency vapor compression cycle heat pumps for use in solar assisted heat pump (SAHP) systems is presented. A water source heat pump and a solar powered absorption chiller are studied for their feasibility in improving the performance of a SAHP system. A two speed multiple level heat pump compressor is analyzed. The product data for two advanced water source heat pump models are provided along with operating instructions for a parallel compressor water source heat pump. Marketing data for SAHP systems are included.

Not Available

1980-01-01T23:59:59.000Z

404

Nuclear Maintenance Applications Center: Reactor Coolant Pump/Reactor Recirculation Pump Motor Lubrication Oil Systems Maintenance G uide  

Science Conference Proceedings (OSTI)

RCP and RRP Motor Lubrication system issues have ranked high on NMAC maintenance Issues Surveys in recent years. Problems reported have included oil leakage at power, the need for additional reservoirs to accommodate leakage, oil degradation (foaming, particulate) as well as sludge problems due to the design of the motor and some as a result of new oil formulations and other changes made by the oil suppliers. Reactor Coolant Pumps (RCP) used in Pressurized Water Reactors and Reactor Recirculation Pumps ...

2006-12-22T23:59:59.000Z

405

Pasadena Water and Power - Commercial Energy Efficiency Rebate Program |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Pasadena Water and Power - Commercial Energy Efficiency Rebate Pasadena Water and Power - Commercial Energy Efficiency Rebate Program Pasadena Water and Power - Commercial Energy Efficiency Rebate Program < Back Eligibility Agricultural Commercial Industrial Institutional Nonprofit Schools Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Home Weatherization Construction Commercial Weatherization Design & Remodeling Other Heat Pumps Appliances & Electronics Commercial Lighting Lighting Manufacturing Maximum Rebate Energy Efficiency Partnering Program: The total standard rebate received may not exceed 50% of the project's cost. Program Info State California Program Type Utility Rebate Program Rebate Amount Energy Efficiency Partnership Retrofit Savings: $0.055 - $0.44 per kWh that the new project saves compared to the energy use allowed under Title

406

Initial Business Case Analysis of Two Integrated Heat Pump HVAC Systems for Near-Zero-Energy Homes -- Update to Include Analyses of an Economizer Option and Alternative Winter Water Heating Control Option  

Science Conference Proceedings (OSTI)

The long range strategic goal of the Department of Energy's Building Technologies (DOE/BT) Program is to create, by 2020, technologies and design approaches that enable the construction of net-zero energy homes at low incremental cost (DOE/BT 2005). A net zero energy home (NZEH) is a residential building with greatly reduced needs for energy through efficiency gains, with the balance of energy needs supplied by renewable technologies. While initially focused on new construction, these technologies and design approaches are intended to have application to buildings constructed before 2020 as well resulting in substantial reduction in energy use for all building types and ages. DOE/BT's Emerging Technologies (ET) team is working to support this strategic goal by identifying and developing advanced heating, ventilating, air-conditioning, and water heating (HVAC/WH) technology options applicable to NZEHs. Although the energy efficiency of heating, ventilating, and air-conditioning (HVAC) equipment has increased substantially in recent years, new approaches are needed to continue this trend. Dramatic efficiency improvements are necessary to enable progress toward the NZEH goals, and will require a radical rethinking of opportunities to improve system performance. The large reductions in HVAC energy consumption necessary to support the NZEH goals require a systems-oriented analysis approach that characterizes each element of energy consumption, identifies alternatives, and determines the most cost-effective combination of options. In particular, HVAC equipment must be developed that addresses the range of special needs of NZEH applications in the areas of reduced HVAC and water heating energy use, humidity control, ventilation, uniform comfort, and ease of zoning. In FY05 ORNL conducted an initial Stage 1 (Applied Research) scoping assessment of HVAC/WH systems options for future NZEHs to help DOE/BT identify and prioritize alternative approaches for further development. Eleven system concepts with central air distribution ducting and nine multi-zone systems were selected and their annual and peak demand performance estimated for five locations: Atlanta (mixed-humid), Houston (hot-humid), Phoenix (hot-dry), San Francisco (marine), and Chicago (cold). Performance was estimated by simulating the systems using the TRNSYS simulation engine (Solar Energy Laboratory et al. 2006) in two 1800-ft{sup 2} houses--a Building America (BA) benchmark house and a prototype NZEH taken from BEopt results at the take-off (or crossover) point (i.e., a house incorporating those design features such that further progress towards ZEH is through the addition of photovoltaic power sources, as determined by current BEopt analyses conducted by NREL). Results were summarized in a project report, HVAC Equipment Design options for Near-Zero-Energy Homes--A Stage 2 Scoping Assessment, ORNL/TM-2005/194 (Baxter 2005). The 2005 study report describes the HVAC options considered, the ranking criteria used, and the system rankings by priority. In 2006, the two top-ranked options from the 2005 study, air-source and ground-source versions of an integrated heat pump (IHP) system, were subjected to an initial business case study. The IHPs were subjected to a more rigorous hourly-based assessment of their performance potential compared to a baseline suite of equipment of legally minimum efficiency that provided the same heating, cooling, water heating, demand dehumidification, and ventilation services as the IHPs. Results were summarized in a project report, Initial Business Case Analysis of Two Integrated Heat Pump HVAC Systems for Near-Zero-Energy Homes, ORNL/TM-2006/130 (Baxter 2006). The present report is an update to that document. Its primary purpose is to summarize results of an analysis of the potential of adding an outdoor air economizer operating mode to the IHPs to take advantage of free cooling (using outdoor air to cool the house) whenever possible. In addition it provides some additional detail for an alternative winter water heating/space heating (WH/S

Baxter, Van D [ORNL

2006-12-01T23:59:59.000Z

407

Design and Fabrication of a Vertical Pump Multiphase Flow Loop  

E-Print Network (OSTI)

A new centrifugal pump has been devised to handle two-phase flow. However, it requires full scale testing to allow further development. Testing is required to verify performance and to gain information needed to apply this design in the field. Further, testing will allow mathematical models to be validated which will allow increased understanding of the pump's behavior. To perform this testing, a new facility was designed and constructed. This facility consists of a closed flow loop. The pump is supplied by separate air and water inlet flows that mix just before entering the pump. These flows can be controlled to give a desired gas volume fraction and overall flow rate. The pump outlet flows into a tank which separates the fluids allowing them to re-circulate. Operating inlet pressures of up to three hundred PSIG will be used with a flow rate of twelve hundred gallons per minute. A two-hundred fifty horsepower electric motor is used to power the pump. The loop is equipped with instrumentation to measure temperature, pressure, flow rate, pump speed, pump shaft horsepower, shaft torque, and shaft axial load. The pump itself has a clear inlet section and a clear section allowing visualization of the second stage volute interior as well as numerous pressure taps along the second stage volute. This instrumentation is sufficient to completely characterize the pump. Design and construction details are provided as well as a history of the initial operating experiences and data collected. A discussion of lessons learned is given in the conclusions. Future projects intended to use this facility are also given. Finally, detailed design drawings are supplied as well as operating instructions and checklists.

Kirkland, Klayton 1965-

2012-12-01T23:59:59.000Z

408

Ground-Source Heat Pumps Applied to Commercial Buildings  

SciTech Connect

Ground-source heat pumps can provide an energy-efficient, cost-effective way to heat and cool commercial facilities. While ground-source heat pumps are well established in the residential sector, their application in larger, commercial-style, facilities is lagging, in part because of a lack of experience with the technology by those in decision-making positions. Through the use of a ground-coupling system, a conventional water-source heat pump design is transformed to a unique means of utilizing thermodynamic properties of earth and groundwater for efficient operation throughout the year in most climates. In essence, the ground (or groundwater) serves as a heat source during winter operation and a heat sink for summer cooling. Many varieties in design are available, so the technology can be adapted to almost any site. Ground-source heat pump systems can be used widely in commercial-building applications and, with proper installation, offer great potential for the commercial sector, where increased efficiency and reduced heating and cooling costs are important. Ground-source heat pump systems require less refrigerant than conventional air-source heat pumps or air-conditioning systems, with the exception of direct-expansion-type ground-source heat pump systems. This chapter provides information and procedures that an energy manager can use to evaluate most ground-source heat pump applications. Ground-source heat pump operation, system types, design variations, energy savings, and other benefits are explained. Guidelines are provided for appropriate application and installation. Two case studies are presented to give the reader a sense of the actual costs and energy savings. A list of manufacturers and references for further reading are included for prospective users who have specific or highly technical questions not fully addressed in this chapter. Sample case spreadsheets are provided in Appendix A. Additional appendixes provide other information on the ground-source heat pump technology.

Parker, Steven A.; Hadley, Donald L.

2006-12-31T23:59:59.000Z

409

Ground-source Heat Pumps Applied to Commercial Buildings  

SciTech Connect

Ground-source heat pumps can provide an energy-efficient, cost-effective way to heat and cool commercial facilities. While ground-source heat pumps are well established in the residential sector, their application in larger, commercial-style, facilities is lagging, in part because of a lack of experience with the technology by those in decision-making positions. Through the use of a ground-coupling system, a conventional water-source heat pump design is transformed to a unique means of utilizing thermodynamic properties of earth and groundwater for efficient operation throughout the year in most climates. In essence, the ground (or groundwater) serves as a heat source during winter operation and a heat sink for summer cooling. Many varieties in design are available, so the technology can be adapted to almost any site. Ground-source heat pump systems can be used widely in commercial-building applications and, with proper installation, offer great potential for the commercial sector, where increased efficiency and reduced heating and cooling costs are important. Ground-source heat pump systems require less refrigerant than conventional air-source heat pumps or air-conditioning systems, with the exception of direct-expansion-type ground-source heat pump systems. This chapter provides information and procedures that an energy manager can use to evaluate most ground-source heat pump applications. Ground-source heat pump operation, system types, design variations, energy savings, and other benefits are explained. Guidelines are provided for appropriate application and installation. Two case studies are presented to give the reader a sense of the actual costs and energy savings. A list of manufacturers and references for further reading are included for prospective users who have specific or highly technical questions not fully addressed in this chapter. Sample case spreadsheets are provided in Appendix A. Additional appendixes provide other information on the ground-source heat pump technology.

Parker, Steven A.; Hadley, Donald L.

2009-07-14T23:59:59.000Z

410

Ground-coupled heat pump systems: a pumping analysis.  

E-Print Network (OSTI)

??Ground-coupled heat pump (GCHP) systems use the ground as a heat source or sink that absorbs heat from or rejects heat to the soil, respectively; (more)

Mays, Cristin Jean

2012-01-01T23:59:59.000Z

411

Chemical heat pump  

DOE Patents (OSTI)

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

Greiner, Leonard (2750-C Segerstrom Ave., Santa Ana, CA 92704)

1980-01-01T23:59:59.000Z

412

Absorption heat pump system  

DOE Patents (OSTI)

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

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

1984-01-01T23:59:59.000Z

413

Outlook for Energy and Implications for Irrigated Agriculture  

E-Print Network (OSTI)

Agriculture uses large quantities of energy to pump groundwater for irrigation. This means the cost of energy has important implications for the industry in terms of costs and profitability. Increases in the prices of energy sources such as natural gas, electricity, liquid petroleum gas and diesel can cause economic hardship for irrigators, particularly if those increases are unanticipated. The purpose of this paper is to briefly summarize important trends in the current domestic energy situation that could have significant impacts on the future cost and availability of energy, and to show what the implications of those trends are for irrigated agriculture. The primary focus of this study will be on trends in natural gas, since natural gas is the major fuel used for irrigation in the Great Plains states.

Patton, W. P.; Lacewell, R. D.

1977-09-01T23:59:59.000Z

414

An Experimental Examination of a Progressing Cavity Pump Operating at Very High Gas Volume Fractions  

E-Print Network (OSTI)

The progressing cavity pump is a type of positive displacement pump that is capable of moving nearly any fluid. This type of pump transports fluids in a series of discrete cavities formed by the helical geometries of its rigid rotor and elastomeric stator. With appropriate materials for the rotor and stator, this pump can move combinations of liquids, suspended solids, and gasses equally well. Because of its versatility, the progressing cavity pump is widely used in the oil industry to transport mixtures of oil, water, and sediment; this investigation was prompted by a desire to extend the use of progressing cavity pumps to wet gas pumping applications. One of the progressing cavity pump's limitations is that the friction between the rotor and stator can generate enough heat to damage the rotor if the pump is not lubricated and cooled by the process fluid. Conventional wisdom dictates that this type of pump will overheat if it pumps only gas, with no liquid in the process fluid. If a progressing cavity pump is used to boost the output from a wet gas well, it could potentially be damaged if the well's output is too dry for an extended period of time. This project seeks to determine how a progressing cavity pump behaves when operating at gas volume fractions between 0.90 and 0.98. A progressing cavity pump manufactured by seepex, model no. BN 130-12, is tested at half and full speed using air-water mixtures with gas volume fractions of 0.90, 0.92, 0.94, 0.96, and 0.98. The pump's inlet and outlet conditions are controlled to produce suction pressures of 15, 30, and 45 psi and outlet pressures 0, 30, 60, 90, 120, and 150 psi higher than the inlet pressure. A series of thermocouples, pressure transducers, and turbine flow meters measures the pump's inlet and outlet conditions, the flow rates of water and air entering the pump, and pressures and temperatures at four positions within the pump's stator. Over all test conditions, the maximum recorded temperature of the pump stator did not exceed the maximum safe rubber temperature specified by the manufacturer. The pumps flow rate is independent of both the fluid's gas volume fraction and the pressure difference across the pump, but it increases slightly with the pump's suction pressure. The pump's mechanical load, however, is dependent only on the pressure difference across the pump and increases linearly with that parameter. Pressure measurements within the stator demonstrated that the leakage between the pump's cavities increases with the fluids gas volume fraction, indicating that liquid inside the pump improves its sealing capability. However, those same measurements failed to detect any appreciable leakage between the two pressure taps nearest the pump's inlet. This last observation suggests that the pump could be shortened by as much as 25 percent without losing any performance in the range of tested conditions; shortening the pump should increase its efficiency by decreasing its frictional mechanical load.

Glier, Michael W.

2011-05-01T23:59:59.000Z

415

MHK Technologies/SeaDog Pump | Open Energy Information  

Open Energy Info (EERE)

SeaDog Pump SeaDog Pump < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage SeaDog Pump.jpg Technology Profile Primary Organization Independent Natural Resources Project(s) where this technology is utilized *MHK Projects/Gulf of Mexico Ocean test Technology Resource Click here Wave Technology Type Click here Point Absorber Technology Readiness Level Click here TRL 1-3: Discovery / Concept Definition / Early Stage Development & Design & Engineering Technology Description The main components of the SEADOG pump include a buoyancy chamber, buoyancy block, piston assembly, piston shaft, piston cylinder, and intake and exhaust valves. When positioned in the water, the buoyancy block (filled with air) floats within the buoyancy chamber, moving up and down in relation to the ocean waves and swells. The buoyancy block is connected to the piston shaft, which in turn moves the piston assembly through the piston cylinder. As the buoyancy block moves down in the trough of a wave it draws the piston downward through the piston cylinder. The downward movement draws water into the piston cylinder through the intake valve filling the piston cylinder chamber. As the next wave lifts the buoyancy block the water within the piston cylinder is under pressure and is expelled through the exhaust valve. Each stroke of the piston causes the water to be pumped from the piston cylinder in a regular manner.

416

Heat pumps for geothermal applications: availability and performance. Final report  

SciTech Connect

A study of the performance and availability of water-source heat pumps was carried out. The primary purposes were to obtain the necessary basic information required for proper evaluation of the role of water-source heat pumps in geothermal energy utilization and/or to identify the research needed to provide this information. The Search of Relevant Literature considers the historical background, applications, achieved and projected performance evaluations and performance improvement techniques. The commercial water-source heat pump industry is considered in regard to both the present and projected availability and performance of units. Performance evaluations are made for units that use standard components but are redesigned for use in geothermal heating.

Reistad, G.M.; Means, P.

1980-05-01T23:59:59.000Z

417

Farming First-Agriculture and the Green Economy | Open Energy Information  

Open Energy Info (EERE)

Farming First-Agriculture and the Green Economy Farming First-Agriculture and the Green Economy Jump to: navigation, search Tool Summary Name: Farming First-Agriculture and the Green Economy Agency/Company /Organization: Farming First Sector: Land, Water, Climate Focus Area: Agriculture, Food Supply, Water Conservation, Land Use Topics: Pathways analysis, Background analysis Resource Type: Case studies/examples User Interface: Website Website: www.farmingfirst.org/green-economy/ Cost: Free UN Region: Eastern Africa, Middle Africa, Northern Africa, Southern Africa, Western Africa, Central America, South America Farming First-Agriculture and the Green Economy Screenshot References: Farming First-Agriculture and the Green Economy[1] This article is a stub. You can help OpenEI by expanding it. References

418

Heat Pumps | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

existing heat contained within the earth -- a clean, reliable, and renewable source of energy. In moderate climates, heat pumps can be an energy-efficient alternative to furnaces...

419

Chemical heat pump  

DOE Patents (OSTI)

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

Greiner, Leonard (2853-A Hickory Pl., Costa Mesa, CA 92626)

1984-01-01T23:59:59.000Z

420

Chemical heat pump  

DOE Patents (OSTI)

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

Greiner, Leonard (2853-A Hickory Pl., Costa Mesa, CA 92626)

1984-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "agricultural water pumping" 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

Chemical heat pump  

DOE Patents (OSTI)

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

Greiner, Leonard (2853-A Hickory Pl., Costa Mesa, CA 92626)

1981-01-01T23:59:59.000Z

422

Chemical heat pump  

DOE Patents (OSTI)

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

Greiner, Leonard (2853-A Hickory Pl., Costa Mesa, CA 92626)

1984-01-01T23:59:59.000Z

423

Heat pump apparatus  

DOE Patents (OSTI)

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

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

1983-01-01T23:59:59.000Z

424

Solar Photovoltaics for Sustainable Agriculture and  

E-Print Network (OSTI)

Solar photovoltaic (PV) systems have shown their potential in rural electrification projects around the world, especially concerning Solar Home Systems. With continuing price decreases of PV systems, other applications are becoming economically attractive and growing experience is gained with the use of PV in such areas as social and communal services, agriculture and other productive activities, which can have a significant impact on rural development. There is still a lack of information, however, on the potential and limitations of such PV applications. The main aim of this study is, therefore, to contribute to a better understanding of the potential impact and of the limitations of PV systems on sustainable agriculture and rural development (SARD), especially concerning income-generating activities. It is, in fact, of paramount importance to identify the potential contribution of PV to rural development in order to gain further financial and political commitment for PV projects and programmes and to design appropriate PV projects. One of the main lessons learnt through this study is that success of PV programmes is significantly enhanced when an integrated strategy is followed. Solar photovoltaic systems, through their flexibility in use, offer unique chances for the energy sector to provide packages of energy services to remote rural areas such as for rural health care, education, communication, agriculture, lighting and water supply. It is hoped that this document contributes to the generation of ideas and discussions among the different institutions involved in providing these services to rural areas and thereby to an "informed " decision on the PV technology option.

B. Van Campen; D. Guidi; G. Best

2000-01-01T23:59:59.000Z

425

Blue Ridge Mountain Electric Membership Corporation - Water Heater...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Heating & Cooling Cooling Construction Design & Remodeling Ventilation Manufacturing Heat Pumps Appliances & Electronics Water Heating Program Information Georgia Program Type...

426

Hanford's 200 West Pump and Treat System Garners Worldwide Attention |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

200 West Pump and Treat System Garners Worldwide 200 West Pump and Treat System Garners Worldwide Attention Hanford's 200 West Pump and Treat System Garners Worldwide Attention August 27, 2013 - 12:00pm Addthis The award recognized CH2M HILL for its excellence in the international water industry. CH2M HILL’s Water Business Group's International Client Sector Director Peter Nicol accepted the award from Global Water Awards Speaker and former Mexican President Vicente Fox. The award recognized CH2M HILL for its excellence in the international water industry. CH2M HILL's Water Business Group's International Client Sector Director Peter Nicol accepted the award from Global Water Awards Speaker and former Mexican President Vicente Fox. The 200 West Pump and Treat System design and construction teams utilized energy efficient and sustainable design elements, including recycled steal. This photo shows the system’s processing equipment. Approximately 539 tons, or 5 percent, of the steel used in construction was recycled.

427

LMR (liquid metal reactor) centrifugal pump coastdowns  

Science Conference Proceedings (OSTI)

A centrifugal pump model which describes the interrelationships of the pump discharge flowrate, pump speed, shaft torque and dynamic head has been implemented based upon existing models. Specifically, the pump model is based upon the dimensionless-homologous pump theory of Wylie and Streeter. Given data from a representative pump, homologous theory allows one to predict the transient characteristics of similarly sized pumps. This homologous pump model has been implemented into both the one-dimensional SASSYS-1 systems analysis code and the three-dimensional COMMIX-1A code. Comparisons have been made both against other pump models (CRBR) and actual pump coastdown data (EBR-II and FFTF). Agreement with this homologous pump model has been excellent. Additionally, these comparisons indicate the validity of applying the medium size pump data of Wylie and Streeter to a range of typical LMR centrifugal pumps.

Dunn, F.E.; Malloy, D.J.

1987-01-01T23:59:59.000Z

428

Wabash County REMC - Residential Geothermal and Air-source Heat Pump Rebate  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Wabash County REMC - Residential Geothermal and Air-source Heat Wabash County REMC - Residential Geothermal and Air-source Heat Pump Rebate Program Wabash County REMC - Residential Geothermal and Air-source Heat Pump Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Heat Pumps Appliances & Electronics Water Heating Maximum Rebate Geothermal: $750 Air Source Heat Pumps: $625 One rebate per house Program Info State Indiana Program Type Utility Rebate Program Rebate Amount Air Source Heat Pumps: $125 - $625/ton Geothermal Heat Pumps: $150 - $750/ton Water Heater: $100 Provider Wabash County REMC Wabash Rural Electric Membership Cooperative (REMC) is a member-owned electric distribution organization that provides service to customers in north-central Indiana. To encourage energy efficiency, Wabash County REMC

429

Water Protection Projects and Practices (Iowa) | Department of...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Protection Projects and Practices (Iowa) Water Protection Projects and Practices (Iowa) Eligibility Agricultural Commercial Construction Fuel Distributor Industrial Installer...

430

Water Quality Regulations (Rhode Island) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Regulations (Rhode Island) Water Quality Regulations (Rhode Island) Eligibility Agricultural Commercial Construction Developer Fed. Government Fuel Distributor General Public...

431

Water Resources Planning and Coordination Act (South Carolina...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Resources Planning and Coordination Act (South Carolina) Water Resources Planning and Coordination Act (South Carolina) Eligibility Agricultural Commercial Construction Industrial...

432

Surface Water Quality Standards (Kansas) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Quality Standards (Kansas) Surface Water Quality Standards (Kansas) Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General PublicConsumer...

433

Three ACE awards for California Agriculture  

E-Print Network (OSTI)

Editor Janet White accepted the awards during the 2012 ACEa noxious weed. Three ACE awards for California AgricultureAgriculture team has won three awards from the Association

Editors, by

2012-01-01T23:59:59.000Z

434

Press Conference Call Tomorrow: Agriculture Secretary Vilsack...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Press Conference Call Tomorrow: Agriculture Secretary Vilsack and Energy Secretary Chu to Discuss Efforts to Reduce U.S. Oil Dependence Press Conference Call Tomorrow: Agriculture...

435

Sustainable Agriculture Network | Open Energy Information  

Open Energy Info (EERE)

"Sustainable Agriculture Network" Retrieved from "http:en.openei.orgwindex.php?titleSustainableAgricultureNetwork&oldid312235" Categories: Clean Energy Organizations...

436

Energy Secretary Chu, Agriculture Secretary Vilsack Announce...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Chu, Agriculture Secretary Vilsack Announce 6.3 million for Biofuels Research Energy Secretary Chu, Agriculture Secretary Vilsack Announce 6.3 million for Biofuels Research July...

437

Renewable Agricultural Energy | Open Energy Information  

Open Energy Info (EERE)

Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon Renewable Agricultural Energy Jump to: navigation, search Name Renewable Agricultural Energy...

438

Agriculture and the greenhouse effect  

SciTech Connect

This article discusses research of the US Department of Agriculture's Agricultural Research Service and the US Department of Energy's Carbon Dioxide Research Division to anticipate the effects of increased atmospheric carbon dioxide on American agriculture. Experiments involving exposure of plants to elevated CO/sub 2/ and attempts to model the productivity of crops as atmospheric CO/sub 2/ increases are described. The scientists quoted in the article are optimistic, emphasizing the beneficial effects of the elevated CO/sub 2/ on crops and speculating that problems caused by associated climate changes can be accommodated by movement of crop regions and by introduction of new varieties.

1988-03-01T23:59:59.000Z

439

Solar-powered irrigation systems study: technical summary report. Volume II. Agricultural energy and fuel price projections for Arizona, California, Kansas, Nebraska, New Mexico, and Texas  

SciTech Connect

This study is part of a larger research effort to project U.S. energy demand and energy prices by state from 1985 to 2015; these projections will be used to assess the potential penetration into the U.S. energy economy by specific solar systems. The detailed agricultural energy price forecasts for the 1985-2015 period used by The Aerospace Corporation to assess the market potential of solar-powered irrigation system is presented. Energy price forecasts in constant 1977 dollars are presented by aggregated county regions in the six states for four major sources of energy used in pumping of irrigation water: liquid petroleum gas (LPG), diesel fuel, natural gas, and electricity. (WHK)

1978-05-31T23:59:59.000Z

440

Integrated assessment of conservation opportunities in the irrigated agriculture sector of the Pacific Northwest Region  

SciTech Connect

This report documents research to identify the potential energy savings and cost per kWh saved for implementing currently available energy conservation measures in the irrigated agriculture sector of the Pacific Northwest. A computer model that simulates the energy consumption process of irrigation systems and estimates the levelized costs of undertaking conservation investments is the primary analytical tool used in this research. Using engineering and economic input parameters for the various conservation measures that could potentially be implemented in irrigated agriculture, the Irrigation Sector Energy Planning (ISEP) model generates estimates of energy savings and cost per kWh saved for the measures. All parameters input to the ISEP model are based upon empirical field data. Results provided by the ISEP model indicate tht by the year 2003 a total of approximately 158.6 average MW of energy could potentially be saved in the Pacific Northwest irrigation sector on all sprinkler-irrigated acres. Approximately 130.4 average MW can be saved on acres currently by sprinkler, while an additional 28.2 average MW could be saved on new acres that are forecast to come under irrigation in the next 20 years. The largest share of the total savings (47%) is estimated to come from the use of low-pressure irrigation. Over 60% of the total potential savings 158.6 average MW is estimated to be available for a cost per kWh saved of 20 mills or less and over 75% could be achieved for a cost of 30 mills or less. Savings from low-pressure irrigation and the redesign of fittings and mainlines will normally cost less than 20 mills per kWh saved. Almost all of the savings that are estimated to cost more than 30 mills per kWh saved to obtain are savings from improved irrigation scheduling on irrigated acres that use surface water and have low average pumping lifts.

Harrer, B.J.; Lezberg, A.J.; Wilfert, G.L.

1985-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "agricultural water pumping" 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

SOLAR PUMPED LASER MICROTHRUSTER  

DOE Green Energy (OSTI)

The development of microsatellites requires the development of engines to modify their orbit. It is natural to use solar energy to drive such engines. For an unlimited energy source the optimal thruster must use a minimal amount of expendable material to minimize launch costs. This requires the ejected material to have the maximal velocity and, hence, the ejected atoms must be as light as possible and be ejected by as high an energy density source as possible. Such a propulsion can be induced by pulses from an ultra-short laser. The ultra-short laser provides the high-energy concentration and high-ejected velocity. We suggest a microthruster system comprised of an inflatable solar concentrator, a solar panel, and a diode-pumped fiber laser. We will describe the system design and give weight estimates.

Rubenchik, A M; Beach, R; Dawson, J; Siders, C W

2010-02-05T23:59:59.000Z

442

Dual source heat pump  

DOE Patents (OSTI)

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

Ecker, Amir L. (Dallas, TX); Pietsch, Joseph A. (Dallas, TX)

1982-01-01T23:59:59.000Z

443

Threshold values of autoresonant pumping  

E-Print Network (OSTI)

There exists stable growing solution of primary resonant equation for a autoresonant pumping with decreasing amplitude. The primary term of asymptotics is $O(\\sqrt{t})$ and does not depend on order of the force from some interval. We point to the interval for the amplitude of the pumping for which the growing stable solution exists.

O. M. Kiselev

2013-03-19T23:59:59.000Z

444

Heat Pumps in Distillation Processes  

Science Conference Proceedings (OSTI)

Both new and retrofit heat pump installations are often economically justifiable for distillation columns with a temperature differential of 50 degrees F or less. However, this study reveals that the near-term demand for electric heat pumps in petroleum and chemical distillation processes appears very limited.

1984-08-01T23:59:59.000Z

445

Southern Region Water Quality Coordination Project  

E-Print Network (OSTI)

Integrated Water Quality Program Impact Report was produced and distributed at the National Integrated Water Management, Irrigation Management, and Water Quality Education for Agricultural Producers. Programs under Management on Livestock and Poultry Farms. · The Water Quality Education for Agricultural Producers Program

446

Alternative Fuels Data Center: Clean Agriculture USA  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Clean Agriculture USA Clean Agriculture USA to someone by E-mail Share Alternative Fuels Data Center: Clean Agriculture USA on Facebook Tweet about Alternative Fuels Data Center: Clean Agriculture USA on Twitter Bookmark Alternative Fuels Data Center: Clean Agriculture USA on Google Bookmark Alternative Fuels Data Center: Clean Agriculture USA on Delicious Rank Alternative Fuels Data Center: Clean Agriculture USA on Digg Find More places to share Alternative Fuels Data Center: Clean Agriculture USA on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Clean Agriculture USA Clean Agriculture USA is a voluntary program that promotes the reduction of diesel exhaust emissions from agricultural equipment and vehicles by encouraging proper operations and maintenance by farmers, ranchers, and

447

Wind Powering America: Agricultural Podcasts  

Wind Powering America (EERE)

agricultural/podcasts.asp A series of agricultural/podcasts.asp A series of radio interviews on wind energy aimed at a rural stakeholder audience produced by Wind Powering America and the National Association of Farm Broadcasters. en-us julie.jones@nrel.gov (Julie Jones) http://www.windpoweringamerica.gov/images/wpa_logo_sm.jpg Wind Powering America: Agricultural Podcasts http://www.windpoweringamerica.gov/agricultural/podcasts.asp Wind Energy Forum Enhances Positives of Wind Production http://www.windpoweringamerica.gov/filter_detail.asp?itemid=4043 http://www.windpoweringamerica.gov/filter_detail.asp?itemid=4043 Thu, 14 Nov 2013 00:00:00 MST Rural Communities Benefit from Wind Energy's Continued Success http://www.windpoweringamerica.gov/filter_detail.asp?itemid=4021 http://www.windpoweringamerica.gov/filter_detail.asp?itemid=4021 Tue, 29

448

Agricultural Carbon Mitigation in Europe  

NLE Websites -- All DOE Office Websites (Extended Search)

Agricultural Carbon Mitigation in Europe Agricultural Carbon Mitigation in Europe Agricultural Carbon Mitigation in Europe Smith P, Powlson DS, Smith JU, Falloon P, and Coleman K. 2000. Meeting Europe's climate change commitments: Quantitative estimates of the potential for carbon mitigation by agriculture. Global Climate Change 6:525-539. Abstract Under the Kyoto Protocol, the European Union is committed to a reduction in CO2 emissions to 92% of baseline (1990) levels during the first commitment period (2008-2012). The Kyoto Protocol allows carbon emissions to be offset by demonstrable removal of carbon from the atmosphere. Thus, land-use / land-management change and forestry activities that are shown to reduce atmospheric CO2 levels can be included in the Kyoto targets. These activities include afforestation, reforestation and deforestation (article

449

Selecting a new water heater  

SciTech Connect

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

NONE

1995-03-01T23:59:59.000Z

450

Geothermal Heat Pumps | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Geothermal Heat Pumps Geothermal Heat Pumps August 19, 2013 - 11:12am Addthis Geothermal heat pumps use the constant temperature of the earth as an exchange medium for heat....

451

Multiplex detection of agricultural pathogens  

DOE Patents (OSTI)

Described are kits and methods useful for detection of agricultural pathogens in a sample. Genomic sequence information from agricultural pathogens was analyzed to identify signature sequences, e.g., polynucleotide sequences useful for confirming the presence or absence of a pathogen in a sample. Primer and probe sets were designed and optimized for use in a PCR based, multiplexed Luminex assay and/or an array assay to successfully identify the presence or absence of pathogens in a sample.

Siezak, Thomas R.; Gardner, Shea; Torres, Clinton; Vitalis, Elizabeth; Lenhoff, Raymond J.

2013-01-15T23:59:59.000Z

452

Multiplex detection of agricultural pathogens  

DOE Patents (OSTI)

Described are kits and methods useful for detection of seven agricultural pathogens (BPSV; BHV; BVD; FMDV; BTV; SVD; and VESV) in a sample. Genomic sequence information from 7 agricultural pathogens was analyzed to identify signature sequences, e.g., polynucleotide sequences useful for confirming the presence or absence of a pathogen in a sample. Primer and probe sets were designed and optimized for use in a PCR based, multiplexed Luminex assay to successfully identify the presence or absence of pathogens in a sample.

McBride, Mary Teresa (Brentwood, CA); Slezak, Thomas Richard (Livermore, CA); Messenger, Sharon Lee (Kensington, CA)

2010-09-14T23:59:59.000Z

453

Agricultural productivity potential assessment by using rainfall contribution index in Sub-Sahara Africa  

Science Conference Proceedings (OSTI)

Food deficit alleviation is the most important aspect for poverty reduction in the entire Sub-Sahara African (SSA) region. This alleviation can be achieved by increasing agricultural productivity. The deficit is in one way or the other attributed to ... Keywords: agricultural water, effective rainfall, food deficit, planting period, productivity, rainfall contribution index

Yu-Min Wang; Seydou Traore; Willy Namaona; Tienfuan Kerh

2009-05-01T23:59:59.000Z

454

TS LOOP NON-POTABLE PUMP EVALUATION  

SciTech Connect

This analysis evaluates the existing subsurface non-potable water system from the portal pump to the end of the water line in the South Ramp and determines if the pump size and spacing meets the system pressure and flow requirements for construction operations and incipient fire fighting capability as established in the Subsurface Fire Hazards Analysis (CRWMS M&O 1998b). This analysis does not address the non potable water system in the Cross Drift which is covered under a previous design analysis (CRWMS-M&O 1998a). The Subsurface Fire Hazards Analysis references sections of OSHA 29 CFR 1910 Subpart L for requirements applicable to the incipient fire fighting hose stations used underground. This analysis does not address mechanical system valves, fittings, risers and other components of the system piping. This system is not designed or intended to meet all National Fire Protection Association (NFPA) codes for a fire fighting system but is only considered a backup system to fire extinguishers that are installed throughout the Topopah Springs (TS) Loop and may be used to fight small incipient stage fires.

S. Goodin

1999-05-14T23:59:59.000Z

455

Global change and agricultural management options for groundwater sustainability  

Science Conference Proceedings (OSTI)

According to the general circulation models (CGMs) for future climate projections, a temperature increase, precipitation decrease, and an increase in the variability of extreme events may be expected in the future, likely reducing available water resources. ... Keywords: Agricultural management, Climate change, Ecosystems, Groundwater, Natural recharge

Lucila Candela; F. Javier Elorza; JoaquN JimNez-MartNez; Wolf Von Igel

2012-08-01T23:59:59.000Z

456

Available Technologies: Efflux Pumps to Increase Microbial ...  

Efflux Pumps to Increase Microbial Tolerance and Biofuel Production EIB-2845. ... to determining the most effective pumps for any given host and target ...

457

Laboratory Equipment - Vacuubrand PC101 Vacuum Pump  

Science Conference Proceedings (OSTI)

Vacuubrand PC101 Vacuum Pump. ... pumping speed: 1.7/2.0 m 3 -h -1; Ultimate ... outlet: 2 bar; Permitted ambient temperature storage/operation: -10C ...

2012-07-11T23:59:59.000Z

458

Course Overview Pump Systems Matter Optimization | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Course Overview Pump Systems Matter Optimization Attendees of the "Pump Systems Optimization" one-day course will gain valuable new skills to help them improve...

459

Efficiency of unitary heat pumps  

SciTech Connect

The efficiencies of approximately 500 unitary heat pumps, from 30 different manufacturers, certified by the Air Conditioning and Refrigeration Institute (ARI) were examined. The certified units account for about 90% of all unitary heat pumps manufactured in the U.S. with a rated cooling capacity below 135,000 Btu/hr, and thus represent a comprehensive data file of the efficiencies of unitary heat pumps offered for sale in the U.S. A computer was used to group the heat pumps according to type and capacity, and to calculate their coefficients of performance (COP) using the data contained in ARI current Directory (April 1 to July 31, 1973) of Certified Unitary Heat Pumps. The results show that the COP of the heat pumps varied from a low of 1.5 to a high of 3.15 or a factor of 2 between the lowest and the highest efficiency, and that the average COP was 2.1 in cooling and 2.4 in heating. The variations of COP with heat pump size, type, manufacturer and outdoor temperature are presented.

Nwude, J.K.; Roman, A.J.

1973-11-01T23:59:59.000Z

460

Analysis of mercury diffusion pumps  

SciTech Connect

Several mercury diffusion pump stages in the Tritium Purification process at the Savannah River Site (SRS) have been removed from service for scheduled preventive maintenance. These stages have been examined to determine if failure has occurred. Evidence of fatigue around the flange portion of the pump has been seen. In addition, erosion and cavitation inside the throat of the venturi tube and corrosion on the other surface of the venturi tube has been observed. Several measures are being examined in an attempt to improve the performance of these pumps. These measures, as well as the noted observations, are described. 4 refs.

Dunn, K.A.

1991-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "agricultural water pumping" 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

Analysis of mercury diffusion pumps  

SciTech Connect

Several mercury diffusion pump stages in the Tritium Purification process at the Savannah River Site (SRS) have been removed from service for scheduled preventive maintenance. These stages have been examined to determine if failure has occurred. Evidence of fatigue around the flange portion of the pump has been seen. In addition, erosion and cavitation inside the throat of the venturi tube and corrosion on the other surface of the venturi tube has been observed. Several measures are being examined in an attempt to improve the performance of these pumps. These measures, as well as the noted observations, are described. 4 refs.

Dunn, K.A.

1991-01-01T23:59:59.000Z

462

Geothermal Heat Pumps Tech Update  

Science Conference Proceedings (OSTI)

Geothermal heat pumps (GHPs; a.k.a. Ground Source Heat Pumps or GHPSM) can successfully compete with air source heat pump in performance due to their use of the ground or groundwater as a heat source or heat sink. In 1993, the U.S. Environmental Protection Agency labeled GHPs as the most energy efficient, cost-effective and environmentally clean space conditioning technology available. The U.S. Department of Energy, Federal Energy Management Program attested that GHPs are a highly efficient method of ...