Sample records for tractors irrigation pumps

  1. Linear tractor dry coal extrusion pump

    DOE Patents [OSTI]

    Sprouse, Kenneth M.; Matthews, David R.

    2011-10-18T23:59:59.000Z

    A pump for transporting particulate material includes an inlet, an outlet, a passageway, a first and second load beam, a first and second scraper seal, and a first and second drive assembly. The inlet introduces the particulate material into the passageway and the outlet expels the particulate material from the passageway. The passageway is defined by a first belt assembly and a second belt assembly that are opposed to each other. The first and second load beams are positioned within the first belt assembly and the second belt assembly, respectively. The first scraper seal and a second scraper seal are positioned proximate the passageway and the outlet. The first drive assembly is positioned within an interior section of the first belt assembly and drives the first belt assembly and the second drive assembly is positioned within an interior section of the second belt assembly and drives the second belt assembly.

  2. Linear tractor dry coal extrusion pump

    DOE Patents [OSTI]

    Sprouse, Kenneth M. (Northridge, CA); Matthews, David R. (Simi Valley, CA)

    2008-06-17T23:59:59.000Z

    A pump for transporting particulate material includes an inlet, an outlet, a passageway, a first and second load beam, a first and second scraper seal, and a first and second drive assembly. The inlet introduces the particulate material into the passageway and the outlet expels the particulate material from the passageway. The passageway is defined by a first belt assembly and a second belt assembly that are opposed to each other. The first and second load beams are positioned within the first belt assembly and the second belt assembly, respectively. The first scraper seal and a second scraper seal are positioned proximate the passageway and the outlet. The first drive assembly is positioned within an interior section of the first belt assembly and drives the first belt assembly and the second drive assembly is positioned within an interior section of the second belt assembly and drives the second belt assembly.

  3. Irrigation Pump Testing

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 Investigation Peer ReviewIron is theIrradiationPump-Testing

  4. On-Farm Irrigation PUBLICATION Irrigation Pumping Plants Water Management Handbook Series

    E-Print Network [OSTI]

    Publication Number

    About this publication: Irrigation Pumping Plants is the fourth in a series of water management handbooks developed by the University of California Irrigation Program. Funding for this project

  5. Development of an efficient off-grid pumping system and evaporation reduction strategies to increase access to irrigation for smallholder farmers in India

    E-Print Network [OSTI]

    Gorbaty, Emily

    2013-01-01T23:59:59.000Z

    Due to the unavailability of electricity, about 85% of groundwater irrigation in eastern India employs fuel-powered surface pumps, which can have system efficiencies as low as 5%. As fuel prices continue to rise, impoverished ...

  6. Miniature pipe crawler tractor

    DOE Patents [OSTI]

    McKay, Mark D. (Idaho Falls, ID); Anderson, Matthew O. (Idaho Falls, ID); Ferrante, Todd A. (Westerville, OH); Willis, W. David (Idaho Falls, ID)

    2000-01-01T23:59:59.000Z

    A pipe crawler tractor may comprise a half tractor assembly having a first base drive wheel, a second base drive wheel, and a top drive wheel. The drive wheels are mounted in spaced-apart relation so that the top drive wheel is positioned between the first and second base drive wheels. The mounting arrangement is also such that the first and second base drive wheels contact the inside surface of the pipe at respective first and second positions and so that the top drive wheel contacts the inside surface of the pipe at a third position, the third position being substantially diametrically opposed to the first and second positions. A control system connected to the half tractor assembly controls the rotation of the first base wheel, the second base wheel, and the top drive wheel to move the half tractor assembly within the pipe.

  7. Safe Tractor Operation: Rollover Prevention

    E-Print Network [OSTI]

    Smith, David

    2005-04-07T23:59:59.000Z

    enclosed cab. The tractor was capable of traveling at a maximum speed of approximately 16 to 18 miles per hour. The victim drove west on a paved highway that did not have shoulders. A passenger rode on the tractor to the driver?s left, leaning against... and the sudden turn to the left, the tractor overturned. The tractor rolled to the right side and came to rest in an inverted position on the road. The victim was pinned underneath the tractor and pronounced dead at the scene. The passenger was slightly...

  8. Economic and Conservation Evaluation of Capital Renovation Projects: Cameron County Irrigation District No. 2 (San Benito) – Interconnect Between Canals 39 and 13-A1 and Replacement of Rio Grande Diversion Pumping Plant

    E-Print Network [OSTI]

    Rister, M. Edward; Lacewell, Ronald D.; Sturdivant, Allen W.; Robinson, John R.C.; Popp, Michael C.; Ellis, John R.

    2003-01-01T23:59:59.000Z

    ’s Endorsement of RGIDECON © 1 This report contains economic and financial analyses results for a capital rehabilitation project proposed by the Cameron County Irrigation District No. 2 (a.k.a. San Benito) in the Rio Grande Basin. Readers interested...TR-212 March 2003 Economic and Conservation Evaluation of Capital Renovation Projects: Cameron County Irrigation District No. 2 (San Benito) – Interconnect Between Canals 39 and 13-A1 and Replacement of Rio Grande Diversion Pumping Plant M. Edward...

  9. An instrumentation package for monitoring tractor performance

    E-Print Network [OSTI]

    Green, Malcolm Kirk

    1983-01-01T23:59:59.000Z

    of performance for most current tractor models was engine speed. Since overall tractor performance was influenced by several operating variables, not just engine speed, additional monitors and displays of performance were needed. Tractor performance monitors... Rotational Sp D' fferential Speed Measurement Draft Measurement Rear Axle Torque Measurement Fuel Consumption Measurement Campbell CR5 Digital Recorder Field Test Design and Procedures Data Requirements Test Site and Field Variables Travel Speed...

  10. Vehicle Technologies Office - AVTA: Hybrid-Electric Tractor Vehicles...

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

    Tractor Vehicles Vehicle Technologies Office - AVTA: Hybrid-Electric Tractor Vehicles The Vehicle Technologies Office's Advanced Vehicle Testing Activity carries out testing on a...

  11. Technical descriptions of ten irrigation technologies for conserving energy

    SciTech Connect (OSTI)

    Harrer, B.J.; Wilfert, G.L.

    1983-05-01T23:59:59.000Z

    Technical description of ten technologies which were researched to save energy in irrigated agriculture are presented. These technologies are: well design and development ground water supply system optimization, column and pump redesign, variable-speed pumping, pipe network optimization, reduced-pressure center-pivot systems, low-energy precision application, automated gated-pipe system, computerized irrigation scheduling, and instrumented irrigation scheduling. (MHR)

  12. Threat Mitigation: The Gravity Tractor

    E-Print Network [OSTI]

    Russell Schweickart; Clark Chapman; Dan Durda; Piet Hut

    2006-08-15T23:59:59.000Z

    The Gravity Tractor (GT) is a fully controlled asteroid deflection concept using the mutual gravity between a robotic spacecraft and an asteroid to slowly accelerate the asteroid in the direction of the "hovering" spacecraft. Based on early warning, provided by ground tracking and orbit prediction, it would be deployed a decade or more prior to a potential impact. Ion engines would be utilized for both the rendezvous with the asteroid and the towing phase. Since the GT does not dock with or otherwise physically contact the asteroid during the deflection process there is no requirement for knowledge of the asteroid's shape, composition, rotation state or other "conventional" characteristics. The GT would first reduce the uncertainty in the orbit of the asteroid via Earth tracking of its radio transponder while station keeping with the asteroid. If, after analysis of the more precise asteroid orbit a deflection is indeed indicated, the GT would "hover" above the surface of the asteroid in the direction of the required acceleration vector for a duration adequate to achieve the desired velocity change. The orbit of the asteroid is continuously monitored throughout the deflection process and the end state is known in real time. The performance envelope for the GT includes most NEOs which experience close gravitational encounters prior to impact and those below 150-200 meters in diameter on a direct Earth impact trajectory.

  13. Mechanical front wheel drive tractors: a field performance study

    E-Print Network [OSTI]

    Babacz, William Adam

    1986-01-01T23:59:59.000Z

    . . . . . . . . . . . . . . . . . . . . . . . . . Comparison of 2WD and NFWD Tractors . . . . . . . . . . . . . . . . . . Comparison of NFWD Tractors Operating in FWA and 2WO Modes III TRACTOR PERFORNANCE NONITORING SYSTEM Instrumentation System Rear Axle Torque . Front Axle Driveline Torque Front...-sized tractors and may be operated with the mechanical front wheel drive engaged in a front wheel assist (FWA) mode or disengaged in a two-wheel drive (2WD) mode. The advertised benefits of NFWD are increased traction and reduced fuel consumption. Agricultural...

  14. Safe Tractor Operation: Driving on Highways

    E-Print Network [OSTI]

    Smith, David

    2004-09-16T23:59:59.000Z

    trailer or other equipment that blocks the SMV emblem, another emblem must be attached to the rear of the towed equipment. Standards for shape, color and placement of the SMV emblem established by the American Society of Agricultural Engineers... of the tractor or equipment as possible. It must be mounted with the point up; the lower edge of the emblem must be at least 2 feet and not more than 6 feet above the ground. September 16, 1994. A 63-year-old farmer was fatally injured when the tractor he...

  15. Vera Irrigation District #15- Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Vera Irrigation District #15 offers rebates to electric customers who improve energy efficiency. Rebates are available for water heaters, windows, heat pumps, clothes washer, duct sealing and...

  16. Calculating Horsepower Requirements and Sizing Supply Pipelines for Irrigation 

    E-Print Network [OSTI]

    Fipps, Guy

    1995-09-05T23:59:59.000Z

    Pumping costs are often one of the largest single expenses in irrigated agriculture. This publication explains how to lower pumping costs by calculating horsepower requirements and sizing supply pipelines correctly. Examples take the reader through...

  17. Using Renewable Energy to Pump Water 

    E-Print Network [OSTI]

    Mecke, Michael; Enciso, Juan

    2007-06-08T23:59:59.000Z

    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...

  18. Using Renewable Energy to Pump Water

    E-Print Network [OSTI]

    Mecke, Michael; Enciso, Juan

    2007-06-08T23:59:59.000Z

    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...

  19. AVTA: Hybrid-Electric Tractor Vehicles

    Broader source: Energy.gov [DOE]

    The Vehicle Technologies Office's Advanced Vehicle Testing Activity carries out testing on a wide range of advanced vehicles and technologies on dynamometers, closed test tracks, and on-the-road. These results provide benchmark data that researchers can use to develop technology models and guide future research and development. The following set of reports describes data collected from hybrid-electric tractor vehicles in the Coca-Cola fleet. This research was conducted by the National Renewable Energy Laboratory (NREL).

  20. Economics of Irrigation Systems 

    E-Print Network [OSTI]

    Amosson, Stephen H.; New, Leon; Almas, Lal; Bretz, Fran; Marek, Thomas

    2002-01-11T23:59:59.000Z

    -inch for the intermediate water-use scenario (sorghum/soybeans) at 350- foot pumping lift for the six irrigation systems. dollars/acre-inch of water Cost Component/System CF SF MESA LESA LEPA SDI A. Fixed cost Depreciation 0.32 0.45 0.76 1.06 1.22 2.09 Taxes 0.02 0.02 0... of $832.23 per acre (Table 2). The economic feasibility of a new irrigation system can be affected by the marginal tax rate. For example, if a producer?s marginal tax rate is 28 percent instead of 15 percent, the net investment in subsurface drip...

  1. Economic and Conservation Evaluation of Capital Renovation Projects: United Irrigation District of Hidalgo County (United) - Rehabilitation of Main Canal, Laterals, and Diversion Pump Station - Preliminary

    E-Print Network [OSTI]

    Rister, M. Edward; Lacewell, Ronald D.; Sturdivant, Allen W.

    project involves: installing 4.66 miles of pipeline in the Main Canal and Lateral 7N, installing 13.46 miles of pipeline in several laterals and sub-laterals, and rehabilitating the District’s Rio Grande diversion pumping plant. Both nominal and real...

  2. BPA, electric co-op and irrigation district testing aquifer recharge

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

    electric co-op and irrigation district testing aquifer recharge Dispatching recharge pumping could save money and relieve electricity oversupply Portland, Ore. - The Bonneville...

  3. Microcomputer-based on-board tractor performance monitor

    E-Print Network [OSTI]

    Morris, David Alan

    1984-01-01T23:59:59.000Z

    46 vii Chapter Page IV EXPERIHENTAL PROCEDURE 49 Calibration A/D Strain Gage Offsets Scan Timer and Counters Fuel Flowmeter PTO Dynamometer Test Speed Trials Field Test Design and Procedures Scan Parameters Tractor Logbook... 68 V RESULTS AND DISCUSSION 73 Field Performance Axle Load Heasurement Fuel Flowmeter Drawbar Load Cell Alternator Bubble Hemory PTO Dynamometer Test Speed Trials Soil Data Analysis 74 74 75 75 76 76 77 77 81 Tractor Performance...

  4. Impact of Alternative Energy Prices, Tenure Arrangements and Irrigation Technologies on a Typical Texas High Plains Farm

    E-Print Network [OSTI]

    Petty, J. A.; Lacewell, R. D.; Hardin, D. C.; Whitson, R. E.

    and new technology. The model includes a Fortran sub-routine that adjusts irrigation factors each year based on the linear programming solution of the previous year. After calculating new pumping energy requirements, well yield, and pumping lift...

  5. Economic Effect of Energy Price and Economic Feasibility and Potenhal of New Technology and Improved Management for Irrigation in Texas

    E-Print Network [OSTI]

    Lacewell, Ronald D.; Hardin, D. C.; Petty, J. A.; Whitson, R. E.

    changes, tenure and new technology. The model includes a Fortran sub-routine that adjusts irrigation factors each year based on the linear programming solution of the previous year. After calculating new pumping energy requirements, well yield, and pumping...

  6. Microcomputer-based information feedback system for improving tractor efficiency

    E-Print Network [OSTI]

    Grogan, Joseph

    1985-01-01T23:59:59.000Z

    ) used a gear oontrol system based on a customized version of the Motorola 6800 microprocessor. When used with heavy duty automatic transmissions in trucks and off highway equipment, improvements were seen in fuel efficiency, performanoe, reliability... in oil prices over the past deoade sparked more interest in determining tractor efficiency and in exploring ways to improve fuel economy. During the same time period, explosive growth in the eleotronics industry has made available very compact...

  7. Measurement of three-point hitch forces on agricultural tractors

    E-Print Network [OSTI]

    Bandy, Steven Morris

    1986-01-01T23:59:59.000Z

    dynamometer to be used as an additional tool in monitoring tractor performance. Phases 1, Z, and 3 have been completed and these were described by Green, et al. ( 1985), Morris ( 1984), and Grogan ( 1985), respectively. Phase 4 is the subject.... The upper link was instrumented for axial force measurement. measured forces were resolved into components based on the measured angle of the hitch. A second three-point hitch dynamometer was investigated that used load sensing clevis pins. These pins...

  8. Grain Sorghum Irrigation

    E-Print Network [OSTI]

    New, Leon

    2004-08-09T23:59:59.000Z

    This publication explains how to supply adequate water to sorghum to achieve optimum yields. Topics include plant growth stages, soils, irrigation systems, pre-plant irrigation, recent research results and management tools....

  9. Economics of Irrigation Systems

    E-Print Network [OSTI]

    Amosson, Stephen H.; New, Leon; Almas, Lal; Bretz, Fran; Marek, Thomas

    2002-01-11T23:59:59.000Z

    Choosing and buying an irrigation system for crop production can be expensive and complex. This publication discusses six common types of irrigation systems used in Texas: conventional furrow; surge flow furrow; mid-elevation spray application...

  10. Using Flexible Pipe (poly-pipe) with Surface Irrigation

    E-Print Network [OSTI]

    Peries, Xavier; Enciso, Juan

    2005-10-05T23:59:59.000Z

    include ? Tractor with furrower tool and unspooling bracket ? Poly-pipe rolls ? Pump or valve for connection ? Clamps, rubber straps, or duct tape ? Shovel ? PVC connectors (if more than one roll is used) ? Hole puncher with plugs Prior to poly.... Placing dirt on poly-pipe at 10-foot intervals. 5. Use clamps, rubber straps, string, or even duct tape (Figs. 4a and 4b) to connect the poly-pipe tightly to valves or supply-pipe fittings. Discharge-pipe diam- eter does not have to match...

  11. Steam Plant, 6% Irrigation,

    E-Print Network [OSTI]

    Zhou, Pei

    Steam Plant, 6% School of Medicine, 17% Irrigation, 3% Hospital, 22% Athletics, 2% Housing, 5 · Rainwater Cisterns · Reducing the number of once through cooling systems in labs · Expediting the connection for Irrigation ~15 million gallons Percent of Water Used for Irrigation that is Non-Potable ~10-15% Number

  12. Irrigation of Liquid Manures With Center-Pivot Irrigation Systems

    E-Print Network [OSTI]

    Kaye, Jason P.

    Irrigation of Liquid Manures With Center-Pivot Irrigation Systems Albert R. Jarrett, Professor Cooperative Extension Center Pivot A center pivot irrigation system is a single lateral, fixed at one end (the are correctly sized Figure 1. Center Pivot Irrigation System. #12;ï They do not irrigate corners of fieldsóthey

  13. Efficient Irrigation for Water conservation in the Rio Grande Basin: 2010-2011 Progress and Accomplishments

    E-Print Network [OSTI]

    Kalisek, D.; Harris, B.L.; Runyan, C.; DeMouche, L.

    2011-06-21T23:59:59.000Z

    in irrigation. Use of GIS as a real-time decision support system for irrigation districts An online GIS application integrates pump flow, meter data, and water account information to support districts in their current water management and conservation... Water Use 08 Task 4 On-Farm Irrigation System Management 12 Task 5 Urban Water Conservation 16 Task 6 Environment, Ecology and Water Quality Protection 22 Task 7 Saline and Wastewater Management and Water Reuse 28 Task 8...

  14. Farm Tractors in Kansas: How to Perfect a Security Interest

    E-Print Network [OSTI]

    Johnstun, Aaron J.; Ware, Stephen J.

    2009-01-01T23:59:59.000Z

    -2153 . . . .”); id. § 28-2153(D) (“This section does not apply to: (1) [a] farm tractor.”). 3. Arkansas. See ARK. CODE ANN. § 4-9-311(a) (West 2004) (“[T]he filing of a financing statement is not necessary or effective to perfect a security interest in property... in an area away from the traveled surface of an established open highway.”); id. § 1102(33) (“‘Vehicle’ does not include bicycles, trailers except travel trailers and rental trailers, or implements of husbandry. . . . All implements of husbandry used...

  15. Comprehensive Irrigation Management

    E-Print Network [OSTI]

    Cook, K.

    2011-01-01T23:59:59.000Z

    The other irrigation ? Optimizing water consumption in urban landscapes Kenneth Cook President, Intelligent Irrigation Banyan Water Water risk ? increasing rapidly in the US 2 Sustainable property management 3 ? ?Green? ? Audubon Cert..., COO ? Improve efficiencies and use in urban landscapes ? Make efficiency changes in the landscape early on ? too important for all stakeholders to get to point of no water availability for irrigation ? Real estate values affected by as much...

  16. Nitrogen Fertilization of Irrigated Cotton as Fertilizer Prices Climb

    E-Print Network [OSTI]

    Mukhtar, Saqib

    Nitrogen Fertilization of Irrigated Cotton as Fertilizer Prices Climb As gasoline prices at the pump continue to climb above $ 3.00/gallon, fertilizer prices, especially Nitrogen (N) are doing the same. As of spring 2008, the price of one ton of urea ammonium nitrate was $420, or $0.67 per lb N

  17. Comprehensive Irrigation Management 

    E-Print Network [OSTI]

    Cook, K.

    2011-01-01T23:59:59.000Z

    ? Commoditized relationships ? Disconnect with conservation investments & sustainable water savings ? High turnover rates among property managers and landscape contractors ? Economic pressures on operating expense to maintain system integrity Result... for conserving water ? Irrigation manufactures disputed claims regarding documentable savings ? Irrigation professionals blamed for excessive application ? Regulatory agencies not accountable ? Water utilities imposing restrictions & blaming landscapes...

  18. Using LNG as a Fuel in Heavy-Duty Tractors

    SciTech Connect (OSTI)

    Liquid Carbonic, Inc. and Trucking Research Institute

    1999-08-09T23:59:59.000Z

    Recognizing the lack of operational data on alternative fuel heavy-truck trucks, NREL contracted with the Trucking Research Institute (TRI) in 1994 to obtain a cooperative agreement with Liquid Carbonic. The purpose of this agreement was to (1) purchase and operate liquid natural gas- (LNG-) powered heavy-duty tractor-trailers with prototype Detroit Diesel Corporation (DDC) Series 60 natural gas (S60G) engines in over-the-road commercial service applications; and (2) collect and provide operational data to DDC to facilitate the on-road prototype development of the engine and to NREL for the Alternative Fuels Data Center. The vehicles operated from August 1994 through April of 1997 and led to a commercially available, emissions-certified S60G in 1998. This report briefly documents the engine development, the operational characteristics of LNG, and the lessons learned during the project.

  19. Summary of NREL's Recent Class 8 Tractor Trailer Platooning Testing (Presentation)

    SciTech Connect (OSTI)

    Lammert, M.; Kelly, K.; Walkowicz, K.

    2014-08-01T23:59:59.000Z

    This presentation summarizes NREL's recent class 8 tractor trailer platooning testing, including analysis of SAE J1321 Type II fuel consumption testing, fuel consumption improvement, fuel economy and platooning position accuracy.

  20. Wind power application for low flow irrigation from the Edwards-Trinity aquifer of West Texas

    E-Print Network [OSTI]

    Molla, Saiful Islam

    1997-01-01T23:59:59.000Z

    Attempts were made to reduce the cost of energy for irrigation in West Texas. To do this two wind turbines of 10 kW size were installed in Garden City and Stiles, Texas to pump water. The turbines were installed on 30 m towers. The pumping water...

  1. Wind power application for low flow irrigation from the Edwards-Trinity aquifer of West Texas 

    E-Print Network [OSTI]

    Molla, Saiful Islam

    1997-01-01T23:59:59.000Z

    Attempts were made to reduce the cost of energy for irrigation in West Texas. To do this two wind turbines of 10 kW size were installed in Garden City and Stiles, Texas to pump water. The turbines were installed on 30 m towers. The pumping water...

  2. Idaho Power- Irrigation Efficiency Rewards Rebate Program

    Broader source: Energy.gov [DOE]

    Through Idaho Power's Irrigation Efficiency Rewards program, agricultural irrigation customers qualify to receive an incentive for a portion of the cost to install a new, more efficient irrigation...

  3. Precision Irrigators Network

    E-Print Network [OSTI]

    Bynum, J.; Cothren, T.; Marek, T.; Piccinni, G.

    of decision support systems (DSS) that are used as tools for implementing irrigation BMPs. This DSS guide was developed as a complement to TWDB Report 362, "Water Conservation Best Management Practices Guide," which is a more comprehensive report on water...

  4. Bulletin No. 779 Irrigated agriculture in Idaho

    E-Print Network [OSTI]

    O'Laughlin, Jay

    to consider many technical, economic, and financial factors when choosing or upgrading an irrigation system relative to sprinkler irrigation systems make surface irrigation an attractive alternative. However, surface irrigation systems generally have higher labor requirements, lower water use efficiencies

  5. Evaluation of Corrosion Failure in Tractor-Trailer Brake System

    SciTech Connect (OSTI)

    Wilson, DF

    2002-10-22T23:59:59.000Z

    As reported to ORNL, concomitant with the introduction of different deicing and anti-icing compounds, there was an increase in the brake failure rate of tractor-trailer trucks. A forensic evaluation of a failed brake system was performed. Optical and scanning electron microscopic evaluation showed corrosion to be mostly confined to the brake table/lining interface. The corrosion is non-uniform as is to be expected for plain carbon steel in chloride environments. This initial analysis found no evidence for the chlorides of calcium and magnesium, which are the newly introduced deicing and antiicing compounds and are less soluble in water than the identified chlorides of sodium and potassium, in the scale. The result could be as a result of non-exposure of the examined brake table to calcium and magnesium chloride. The mechanisms for the increased failure rate are postulated as being an increased rate of corrosion due to positive shifts in the corrosion potential, and an increased amount of corrosion due to an increased ''time of wetness'' that results from the presence of hygroscopic salts. Laboratory scale evaluation of the corrosion of plain carbon steel in simulated deicing and anti-icing solutions need to be performed to determine corrosion rates and morphological development of corrosion product, to compare laboratory data to in-service data, and to rank economically feasible replacement materials for low carbon steel. In addition, the mechanical behavior of the lining attached to the brake shoe table needs to be assessed. It is opined that an appropriate adjustment of materials could easily allow for a doubling of a brake table/lining lifetime. Suggestions for additional work, to clarify the mechanisms of rust jacking and to develop possible solutions, are described.

  6. Irrigation Water Quality

    E-Print Network [OSTI]

    McFarland, Mark L.; Lemon, Robert G.; Stichler, Charles

    2002-04-11T23:59:59.000Z

    Irrigation water quality is determined by the total amounts of salts and the types of salts the water contains. In this publication you'll learn why well water can be salty, what problems salty water can cause, what tests should be done...

  7. Electrokinetic pump

    DOE Patents [OSTI]

    Patel, Kamlesh D. (Dublin, CA)

    2007-11-20T23:59:59.000Z

    A method for altering the surface properties of a particle bed. In application, the method pertains particularly to an electrokinetic pump configuration where nanoparticles are bonded to the surface of the stationary phase to alter the surface properties of the stationary phase including the surface area and/or the zeta potential and thus improve the efficiency and operating range of these pumps. By functionalizing the nanoparticles to change the zeta potential the electrokinetic pump is rendered capable of operating with working fluids having pH values that can range from 2-10 generally and acidic working fluids in particular. For applications in which the pump is intended to handle highly acidic solutions latex nanoparticles that are quaternary amine functionalized can be used.

  8. Using Renewable Energy to Pump Water

    E-Print Network [OSTI]

    Enciso, J.; Mecke, M.

    Using Renewable Energy to Pump Water Juan Enciso and Michael Mecke* Wind power Wind is often used as an energy source to operate pumps and supply water to livestock. Because of the large amount of water needed for crops, wind power is rarely used... renewable energy sources ? such as solar or wind power ? for your home, for drip irrigation or for livestock water wells. Wind and solar energy can be excellent options in remote areas where the costs of extending transmission lines are high. Extending...

  9. Path tracking control of agricultural tractors with compensation for steering dynamics

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    Path tracking control of agricultural tractors with compensation for steering dynamics R. Eaton, H for path tracking control due to their generic and more simplistic nature when compared to dynamic models. However, control based solely on the kinematic model rarely takes into consideration any of the dynamics

  10. Irrigation Systems for Forage Crops.

    E-Print Network [OSTI]

    Henggeler, Joseph C.

    1988-01-01T23:59:59.000Z

    TDDe Z TA24S.7 8873 NO.1611 1?1611 ' Texas Agricultural Extension Service l'BRARY FEB 0 1 1989 texas A&M University Irrigation Systems for Forage Crops Texas Agricultural Extension Service ? Zerle L. Carpenter, Director ? The Texas A...&M University System ? College Station, Texas (Blank Pa,ge -In. O-riIIJIal BuIIetinl . 1?? .. , * ): . Irrigation Systems for Forage Crops Joseph C. Henggeler* Several types of irrigation systems can be chosen for irrigating forage crops for grazing...

  11. Modeling the Effects of Groundwater-fed Irrigation on Terrestrial Hydrology over the Conterminous United States

    SciTech Connect (OSTI)

    Leng, Guoyong; Huang, Maoyi; Tang, Qiuhong; Gao, Huilin; Leung, Lai-Yung R.

    2014-06-01T23:59:59.000Z

    Human alteration of the land surface hydrologic cycle is substantial. Recent studies suggest that local water management practices including groundwater pumping and irrigation could significantly alter the quantity and distribution of water in the terrestrial system, with potential impacts on weather and climate through land-atmosphere feedbacks. In this study, we incorporated a groundwater withdrawal scheme into the Community Land Model version 4 (CLM4). To simulate the impact of irrigation realistically, we calibrated the CLM4 simulated irrigation amount against observations from agriculture census at the county scale over the conterminous United States (CONUS). The water used for irrigation was then removed from the surface runoff and groundwater aquifer according to a ratio determined from the county-level agricultural census data. Based on the simulations, the impact of groundwater withdrawals for irrigation on land surface and subsurface fluxes were investigated. Our results suggest that the impacts of irrigation on latent heat flux and potential recharge when water is withdrawn from surface water alone or from both surface and groundwater are comparable and local to the irrigation areas. However, when water is withdrawn from groundwater for irrigation, greater effects on the subsurface water balance were found, leading to significant depletion of groundwater storage in regions with low recharge rate and high groundwater exploitation rate. Our results underscore the importance of local hydrologic feedbacks in governing hydrologic response to anthropogenic change in CLM4 and the need to more realistically simulate the two-way interactions among surface water, groundwater, and atmosphere to better understand the impacts of groundwater pumping on irrigation efficiency and climate.

  12. GOVERNMENT OF MALAYSIA DEPARTMENT OF IRRIGATION

    E-Print Network [OSTI]

    Julien, Pierre Y.

    , construction, operations and maintenance of large volume water management systems for irrigation, drainageGOVERNMENT OF MALAYSIA DEPARTMENT OF IRRIGATION AND DRAINAGE Jabatan Pengairan dan Saliran Malaysia; Coastal Management; Hydrology and Water Resources; Irrigation and Agricultural Drainage; Geotechnical

  13. Electrokinetic pump

    DOE Patents [OSTI]

    Hencken, Kenneth R.; Sartor, George B.

    2004-08-03T23:59:59.000Z

    An electrokinetic pump in which the porous dielectric medium of conventional electrokinetic pumps is replaced by a patterned microstructure. The patterned microstructure is fabricated by lithographic patterning and etching of a substrate and is formed by features arranged so as to create an array of microchannels. The microchannels have dimensions on the order of the pore spacing in a conventional porous dielectric medium. Embedded unitary electrodes are vapor deposited on either end of the channel structure to provide the electric field necessary for electroosmotic flow.

  14. Irrigated Acreage Determination Procedures for Wastewater Application Equipment

    E-Print Network [OSTI]

    SPRINKLER IRRIGATION SYSTEM North Carolina Cooperative Extension Service North Carolina State University #12 IRRIGATION SYSTEM Irrigation continues to be the most practical and cost effective method of applying, irrigation systems have inherent application limitations that make field calibration, irrigation scheduling

  15. Increasing water holding capacity for irrigation

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

    Increasing water holding capacity for irrigation Reseachers recommend solutions for sediment trapping in irrigation system LANL and SNL leveraged technical expertise to determine...

  16. Irrigation Training Program (South Texas Edition)

    E-Print Network [OSTI]

    Porter, D.

    ) .............................................................26 Reference: Estimating Soil Moisture by Feel and Appearance (1619) ............................................................27 Irrigation Training Program Topic Page 3 Table of Contents Irrigation Technologies and Best Management Practices...

  17. Coca-Cola Refreshments Class 8 Diesel Electric Hybrid Tractor Evaluation: 13-Month Final Report

    SciTech Connect (OSTI)

    Walkowicz, K.; Lammert, M.; Curran, P.

    2012-08-01T23:59:59.000Z

    This 13-month evaluation used five Kenworth T370 hybrid tractors and five Freightliner M2106 standard diesel tractors at a Coca Cola Refreshments facility in Miami, Florida. The primary objective was to evaluate the fuel economy, emissions, and operational field performance of hybrid electric vehicles when compared to similar-use conventional diesel vehicles. A random dispatch system ensures the vehicles are used in a similar manner. GPS logging, fueling, and maintenance records and laboratory dynamometer testing are used to evaluate the performance of these hybrid tractors. Both groups drive similar duty cycles with similar kinetic intensity (0.95 vs. 0.69), average speed (20.6 vs. 24.3 mph), and stops per mile (1.9 vs. 1.5). The study demonstrated the hybrid group had a 13.7% fuel economy improvement over the diesel group. Laboratory fuel economy and field fuel economy study showed similar trends along the range of KI and stops per mile. Hybrid maintenance costs were 51% lower per mile; hybrid fuel costs per mile were 12% less than for the diesels; and hybrid vehicle total cost of operation per mile was 24% less than the cost of operation for the diesel group.

  18. Maintaining Subsurface Drip Irrigation Systems

    E-Print Network [OSTI]

    Enciso, Juan; Porter, Dana; Bordovsky, Jim; Fipps, Guy

    2004-09-07T23:59:59.000Z

    A subsurface drip irrigation system should last more than 20 years if properly maintained. Important maintenance procedures include cleaning the filters, flushing the lines, adding chlorine and injecting acids. Details of these procedures...

  19. Winding for linear pump

    DOE Patents [OSTI]

    Kliman, G.B.; Brynsvold, G.V.; Jahns, T.M.

    1989-08-22T23:59:59.000Z

    A winding and method of winding for a submersible linear pump for pumping liquid sodium are disclosed. The pump includes a stator having a central cylindrical duct preferably vertically aligned. The central vertical duct is surrounded by a system of coils in slots. These slots are interleaved with magnetic flux conducting elements, these magnetic flux conducting elements forming a continuous magnetic field conduction path along the stator. The central duct has placed therein a cylindrical magnetic conducting core, this core having a cylindrical diameter less than the diameter of the cylindrical duct. The core once placed to the duct defines a cylindrical interstitial pumping volume of the pump. This cylindrical interstitial pumping volume preferably defines an inlet at the bottom of the pump, and an outlet at the top of the pump. Pump operation occurs by static windings in the outer stator sequentially conveying toroidal fields from the pump inlet at the bottom of the pump to the pump outlet at the top of the pump. The winding apparatus and method of winding disclosed uses multiple slots per pole per phase with parallel winding legs on each phase equal to or less than the number of slots per pole per phase. The slot sequence per pole per phase is chosen to equalize the variations in flux density of the pump sodium as it passes into the pump at the pump inlet with little or no flux and acquires magnetic flux in passage through the pump to the pump outlet. 4 figs.

  20. Winding for linear pump

    DOE Patents [OSTI]

    Kliman, Gerald B. (Schenectady, NY); Brynsvold, Glen V. (San Jose, CA); Jahns, Thomas M. (Schenectady, NY)

    1989-01-01T23:59:59.000Z

    A winding and method of winding for a submersible linear pump for pumping liquid sodium is disclosed. The pump includes a stator having a central cylindrical duct preferably vertically aligned. The central vertical duct is surrounded by a system of coils in slots. These slots are interleaved with magnetic flux conducting elements, these magnetic flux conducting elements forming a continuous magnetic field conduction path along the stator. The central duct has placed therein a cylindrical magnetic conducting core, this core having a cylindrical diameter less than the diameter of the cylindrical duct. The core once placed to the duct defines a cylindrical interstitial pumping volume of the pump. This cylindrical interstitial pumping volume preferably defines an inlet at the bottom of the pump, and an outlet at the top of the pump. Pump operation occurs by static windings in the outer stator sequentially conveying toroidal fields from the pump inlet at the bottom of the pump to the pump outlet at the top of the pump. The winding apparatus and method of winding disclosed uses multiple slots per pole per phase with parallel winding legs on each phase equal to or less than the number of slots per pole per phase. The slot sequence per pole per phase is chosen to equalize the variations in flux density of the pump sodium as it passes into the pump at the pump inlet with little or no flux and acquires magnetic flux in passage through the pump to the pump outlet.

  1. Boosting the Feasibility Pump

    E-Print Network [OSTI]

    2011-12-13T23:59:59.000Z

    The Feasibility Pump (FP) has proved to be an effective method for finding ... introduced a projection-based heuristic for MIP called the Feasibility Pump. (FP).

  2. Improved Water and Nutrient Management Through HighFrequency Irrigation

    E-Print Network [OSTI]

    Howell, T. A.; Brown, K. W.; Newton, R. J.; Redden, D. L.; McFarland, M. J.

    High frequency irrigation implies the uniform, frequent application of water to crops. The fequency may range from several irrigations per week to daily irrigation to even several irrigations per day in greenhouse and nursery settings. Most...

  3. Hydraulic pump

    SciTech Connect (OSTI)

    Polak, P.R.; Jantzen, D.E.

    1984-05-15T23:59:59.000Z

    This invention relates to an improved pump jack characterized by a hollow piston rod which telescopes down over the sucker rod to which it is clamped for reciprocating motion. The cylinder, in turn, is fastened in fixed position directly to the upper exposed end of the well casing. As fluid is introduced into the lower end of the cylinder it raises the piston into engagement with a pushrod housed in the upper cylinder head that lifts switch-actuating means associated therewith into a position operative to actuate a switch located adjacent thereto thereby causing the latter to change state and actuate a multi-function solenoid valve so as to cut off fluid flow to the cylinder. As gravity lowers the sucker rod and piston exhausting the hydraulic fluid therebeneath, an adjustable stop engages the pushrod from above so as to return it together with the switch-actuating means associated therewith to their original positions thereby resetting the switch to complete the operating cycle.

  4. The Impact of Energy Shortage and Cost on Irrigation for the High Plains and Trans Pecos Regions of Texas

    E-Print Network [OSTI]

    Lacewell, R. D.; Condra, G. D.; Hardin, D. C.; Zavaleta, L.; Petty, J. A.

    1978-01-01T23:59:59.000Z

    was utilized in pumping water, compared to 18 percent used in machinery operations. Of this irrigation fuel, 76 percent was natural gas, the majority of which was consumed in the High Plains (Coble and LePori). Current supplies and reserves of natural gas have...

  5. Multiple pump housing

    DOE Patents [OSTI]

    Donoho, II, Michael R. (Edelstein, IL); Elliott, Christopher M. (Metamora, IL)

    2010-03-23T23:59:59.000Z

    A fluid delivery system includes a first pump having a first drive assembly, a second pump having a second drive assembly, and a pump housing. At least a portion of each of the first and second pumps are located in the housing.

  6. Irrigation Training Program (North Texas edition)

    E-Print Network [OSTI]

    Porter, D.

    ) ..........................................................................................26 Reference: Irrigation Monitoring with Soil Water Sensors (B-6194) .............................................................27 Reference: Estimating Soil Moisture by Feel and Appearance (1619...

  7. The Irrigation Technology Center Vision and Concept

    E-Print Network [OSTI]

    for agricultural and landscape irrigation systems, establish an equipment testing and certification program exist for irrigation systems and most consumers do not have the expertise to determine if the systems irrigation systems to provide hands-on instruction, testing and performance evaluations, and applied research

  8. Irrigation Retrofit Program Improving sprinkler system efficiency

    E-Print Network [OSTI]

    Jawitz, James W.

    Irrigation Retrofit Program Improving sprinkler system efficiency Approximately 70% of the homes of irrigation system retrofits that qualify for rebates Contact the Extension Service. MiamiDade County in MiamiDade County have h i l i i i i d i d i l ( h l f )mechanical irrigation timers and indexing valves

  9. Development of a Micro Drive-Under Tractor- Research and Application

    E-Print Network [OSTI]

    Lothar Schulze; Sebastian Behling; Stefan Buhrs

    Abstract—The in-plant transport of goods is increasingly becoming automated. All reasons that argue for automation result in a better cost effectiveness. An extended percentage of the load units are lightweight and small goods that often occur either as single parts or as several articles in multiple small load carriers. Modern logistics concepts demand an efficient transport and the delivery within the intended time. To reduce the covered distance a flexible adjustment of the load capacity to single or accumulated transport is beneficial so that the vehicle can carry the required amount of goods without being oversized. To fulfill these specifications the paper at hand presents the development and realization of a new type of Automated Guided Vehicle that is optimized for the transportation of small goods [1]. The construction is carried out as an omnidirectional drive-under tractor in compact dimensions. The main purpose of the vehicle is the automated towing of trailers. Additionally the transport of single small load carriers can be accomplished by using a lifting table. Therefore it is for the first possible time to use a towing and carrying vehicle with a variable load capacity. For the drive system Mecanum wheels are used to enable omnidirectional maneuverability. Index Terms—Automated Guided Vehicle, drive-under tractor, omnidirectional drive.

  10. CROP & SOIL SCIENCES Irrigation Specialist

    E-Print Network [OSTI]

    Arnold, Jonathan

    CROP & SOIL SCIENCES Irrigation Specialist Committee Membership Dr. John Beasley - committee chair Dr. Jared Whitaker Department of Crop & Soil Sciences Department of Crop & Soil Sciences University: (229) 386-7308 Fax: (912) 681-0376 Dr. Robert Carrow Dr. Mark Risse Department of Crop & Soil Sciences

  11. Resonantly pumped optical pumping injection cavity lasers

    E-Print Network [OSTI]

    Santilli, Michael Robert; McAlpine, T. C.; Greene, K. R.; Olafsen, L. J.; Bewley, W. W.; Felix, C. L.; Vurgaftman, I.; Meyer, J. R.; Lee, H.; Martinelli, R. U.

    2004-11-01T23:59:59.000Z

    , the optically pumped devices have thus far produced much higher powers than their diode counterparts. 4–8 To en- sure the efficient injection of carriers, these optically pumped lasers have employed two main approaches to maximize the absorption of pump photons... of active QWs. The first OPIC lasers to be investigated 12,13 were de- signed for pumping by a Q-switched Ho:YAG laser emitting at 2100 nm. Whereas the cavity resonance wavelength sl cav d for normal incidence, as determined from the transmittance spectrum...

  12. Alternative backing up pump for turbomolecular pumps

    DOE Patents [OSTI]

    Myneni, Ganapati Rao (Yorktown, VA)

    2003-04-22T23:59:59.000Z

    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.

  13. Continuously pumping and reactivating gas pump

    DOE Patents [OSTI]

    Batzer, Thomas H. (Livermore, CA); Call, Wayne R. (Tracy, CA)

    1984-01-01T23:59:59.000Z

    Apparatus for continuous pumping using cycling cyropumping panels. A plurality of liquid helium cooled panels are surrounded by movable nitrogen cooled panels the alternatively expose or shield the helium cooled panels from the space being pumped. Gases condense on exposed helium cooled panels until the nitrogen cooled panels are positioned to isolate the helium cooled panels. The helium cooled panels are incrementally warmed, causing captured gases to accumulate at the base of the panels, where an independent pump removes the gases. After the helium cooled panels are substantially cleaned of condensate, the nitrogen cooled panels are positioned to expose the helium cooled panels to the space being pumped.

  14. The formulation of an analytical model for the determination of an optimum replacement policy for farm tractors for the Texas Department of Corrections

    E-Print Network [OSTI]

    Porterfield, Clyde Jackson

    1970-01-01T23:59:59.000Z

    and fuel types would be required. The objectives of this study include (1) the deter- mination of total repair costs of farm tractors per year of operation for the various horsepower classes, manu- facturers and fuel types for the period 1959-196B... classes, manufacturers and fuel types for each year of operation for the period 1959-1968. The cost information for this study was obtained from tractor records maintained for each farm tractor owned and operated by the Texas Department of Corrections...

  15. Optimal Quantum Pumps

    E-Print Network [OSTI]

    J. E. Avron; A. Elgart; G. M. Graf; L. Sadun

    2001-07-12T23:59:59.000Z

    We study adiabatic quantum pumps on time scales that are short relative to the cycle of the pump. In this regime the pump is characterized by the matrix of energy shift which we introduce as the dual to Wigner's time delay. The energy shift determines the charge transport, the dissipation, the noise and the entropy production. We prove a general lower bound on dissipation in a quantum channel and define optimal pumps as those that saturate the bound. We give a geometric characterization of optimal pumps and show that they are noiseless and transport integral charge in a cycle. Finally we discuss an example of an optimal pump related to the Hall effect.

  16. Gas pump with movable gas pumping panels

    DOE Patents [OSTI]

    Osher, John E. (Alamo, CA)

    1984-01-01T23:59:59.000Z

    Apparatus for pumping gas continuously a plurality of articulated panels of getter material, each of which absorbs gases on one side while another of its sides is simultaneously reactivated in a zone isolated by the panels themselves from a working space being pumped.

  17. Redesign of turbine-pump impeller and diffuser using hydrodynamic design techniques. Final report

    SciTech Connect (OSTI)

    Hamrick, J.T.

    1980-04-01T23:59:59.000Z

    It is indicated that in 1976 the average operating efficiency of well irrigation pumps in the US, including losses in the column pipe and line shaft, was 55.5%, but information is presented to show that losses in a pumping system can be reduced and that it is possible to reach a goal of 82% system efficiency. Hydrodynamic design methods which are used to analyze and modify a commercially available pump are presented. The results of tests with the pump are presented for which delivery losses were reduced by means of a packer at the pump and for which line shaft losses were reduced by means of a high strength line shaft. Methods of designing pumps that have a broader high efficiency range are explored, and a design approach for doing so is presented. The method was not evaluated experimentally. (MCW)

  18. Department of Engineering Science and Mechanics Spring 2013 Solar Powered Well Pump

    E-Print Network [OSTI]

    Demirel, Melik C.

    PENNSTATE Department of Engineering Science and Mechanics Spring 2013 Solar Powered Well Pump was inspired by an actual farm in Dakar, Senegal that is looking to improve their irrigation process. The primary challenges within this project were the specific benchmarks applicable to the Dakar farm

  19. Variable Frequency Pump Drives

    E-Print Network [OSTI]

    Karassik, I. J.; Petraccaro, L. L.; McGuire, J. T.

    . In a conventional pump and driver arrangement (for example, a centrifugal pump coupled to an AC induction motor'with no speed control provision), the motor runs at. a constant speed, which is determined by the incoming line frequency, and the pump... when it is needed. LONG RANGE DESIGN TRENDS The growing use of variable-frequency electric motor drives will permit the integration of 60 and 50 cycle pump lines. One important concern for future improvements is the growing possibility...

  20. Master Gardener Specialist Irrigation Efficiency October 24, 25, 26, 2012

    E-Print Network [OSTI]

    Session of Basic Irrigation Components II. Basic Irrigation System Troubleshooting as related to Water Conservation Learning Objective: Know how to identify the most common problems and landscape irrigation systems:00 ­ 12:00 noon Field/Site Session of Basic Irrigation Components II. Basic Irrigation System

  1. Irrigation of Liquid Manures with Solid Set Systems

    E-Print Network [OSTI]

    Kaye, Jason P.

    Irrigation of Liquid Manures with Solid Set Systems Albert R. Jarrett, Professor, Agricultural Extension Solid Set Irrigation System Solid set irrigation is a system of irrigation sprinklers and piping moved from one location to another). Solid set irrigation systems are rarely used to apply liquid manure

  2. Rotary magnetic heat pump

    DOE Patents [OSTI]

    Kirol, Lance D. (Shelly, ID)

    1988-01-01T23:59:59.000Z

    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.

  3. Rotary magnetic heat pump

    DOE Patents [OSTI]

    Kirol, L.D.

    1987-02-11T23:59:59.000Z

    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.

  4. Salinity Control in Irrigation Agriculture.

    E-Print Network [OSTI]

    Lyerly, Paul J.; Longenecker, Donald E.

    1962-01-01T23:59:59.000Z

    streams and under- ground sources contain dissolved substances known chemically as salts. Ocean water contains approximately 3 percent salts, or 40 tons of salts per acre-foot of water. Waters used for irriga- tion generally contain .1 to 5 tons... of salt per acre-foot of water. In general terms, salt is thought of as table alt; however, thousands of different salts are known. Examples of common salts in irrigation water are table salt (sodium chloride), Epsom salt (magnesium sulfate), gypsum...

  5. Irrigation Water Quality Salinity Management

    E-Print Network [OSTI]

    Small Potassium sulfate K2SO4 Small Sodium bicarbonate NaHCO3 Small Calcium carbonate CaCO3 Very Small concentration as related to the concentration of calcium and magnesium, and 3 Irrigation Water Quality Standards Na2SO4 Moderate to large Calcium chloride CaCl2 Moderate Calcium sulfate (gypsum) CaSO4 2H2O Moderate

  6. The Influence of Trickle Irrigation on the Quality of Irrigation Return Flow

    E-Print Network [OSTI]

    Brown, K. W.; Gerard, C. J.; DeMichele, D. W.; Sharpe, P. J. H.; Hipp, B. W.

    treatment including two different qualities of irrigation water applied through a trickle irrigation system. Both moisture and salt balances were followed inside and outside the lysimeters during a growing season the remainder of the calendar year. A sorghum...

  7. Automation of Pivot Sprinkler Irrigation Systems to More Efficiently Utilize Rainfall and Irrigation Water

    E-Print Network [OSTI]

    Wendt, C. W.; Runkles, J. R.; Gerst, M. D.; Harbert, H. P. III; Hutmacher, R. B.

    A study was conducted to develop automated pivot sprinkler irrigation systems and determine if such systems use less water and energy than manually operated systems. The study was conducted near Earth, Texas, using irrigation systems located...

  8. Liquid metal electric pump

    DOE Patents [OSTI]

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

    1992-01-14T23:59:59.000Z

    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.

  9. Liquid metal electric pump

    DOE Patents [OSTI]

    Abbin, Joseph P. (Albuquerque, NM); Andraka, Charles E. (Albuquerque, NM); Lukens, Laurance L. (Albuquerque, NM); Moreno, James B. (Albuquerque, NM)

    1992-01-01T23:59:59.000Z

    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.

  10. Hydrologic Modeling of a Canal-Irrigated Agricultural Watershed with Irrigation Best Management

    E-Print Network [OSTI]

    a hydrologic perspective. In this study, an approach is developed to model canal irrigation systems understanding of irrigation systems and a proper represen- tation of them in watershed models are required it for modeling purposes. Therefore, the next alternative is to use a model to simulate irrigation systems

  11. Irrigation, Navigation Flood Control and Recreation

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

    Irrigation,-Navigation-Flood-Control-and-Recreation- Sign In About | Careers | Contact | Investors | bpa.gov Search News & Us Expand News & Us Projects & Initiatives Expand...

  12. Irrigation Retrofit Program Steps to Improving sprinkler system efficiency

    E-Print Network [OSTI]

    Jawitz, James W.

    Irrigation Retrofit Program Steps to Improving sprinkler system efficiency Step 1. Replace Program provides rebates for improving urban landscape irrigation systems. Homeowners Associations can receive up to $400 for upgrading their irrigation system. In order to receive reimbursement , sign up

  13. The Effects of Recharge, Agricultural Pumping and Municipal Pumping on Springflow and Pumping Lifts Within the Edwards Aquifer

    E-Print Network [OSTI]

    McCarl, Bruce A.

    The Effects of Recharge, Agricultural Pumping and Municipal Pumping on Springflow and Pumping Lifts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 The Effects of Recharge and Pumping Over Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 The Effects of Agricultural Pumping, Municipal Pumping and Recharge on Comal Springflow

  14. A Hydrodynamic Study of Flow in Irrigation Furrows

    E-Print Network [OSTI]

    Wilke, O.C.

    how these reduced rates of application can be utilized to design furrow irrigation distribution systems to obtain improved irrigation efficiencies and subsurface water distribution patterns....

  15. Toward an Earth System Modeling Approach to Simulate Irrigation...

    Office of Science (SC) Website

    Previous sensitivity studies of irrigation impacts on land surface provide limited analysis of uncertainties from the input data and model irrigation schemes. A team of...

  16. Salinity Control in Irrigation Agriculture.

    E-Print Network [OSTI]

    Longenecker, Donald E.; Lyerly, Paul J.

    1957-01-01T23:59:59.000Z

    substances I chemically as salts. Ocean water contains rimately 3 percent salts, or 40 tons of salts .-foot of water. Waters used for irriga- ~erally contain .1 to 5 tons of salt per acre- water. . -er acrf +ion gen 'pot of ,.. ,enera1 terms, salt... and rock materials through which .he water must seep before becoming available inr irrigation. Mountain streams often contain less than one-tenth ton of salt per acre-foot of .rater. Drainage waters and ground waters in lesert valleys may contain...

  17. Study of particle pumping characteristics for different pumping geometries in

    E-Print Network [OSTI]

    Karney, Charles

    Study of particle pumping characteristics for different pumping geometries in JT-60U and DIII, Princeton, New Jersey, United States of America Abstract. Particle pumping characteristics were compared between pumping from the inner side private flux region (IPP) and pumping from both sides of the private

  18. Detection of pump degradation

    SciTech Connect (OSTI)

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

    1995-08-01T23:59:59.000Z

    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.

  19. Heavy and Overweight Vehicle Brake Testing: Five-Axle Combination Tractor-Flatbed Final Report

    SciTech Connect (OSTI)

    Lascurain, Mary Beth [ORNL; Capps, Gary J [ORNL; Franzese, Oscar [ORNL

    2013-10-01T23:59:59.000Z

    The Federal Motor Carrier Safety Administration, in coordination with the Federal Highway Administration, sponsored the Heavy and Overweight Vehicle Brake Testing (HOVBT) program in order to provide information about the effect of gross vehicle weight (GVW) on braking performance. Because the Federal Motor Carrier Safety Regulations limit the number of braking system defects that may exist for a vehicle to be allowed to operate on the roadways, the examination of the effect of brake defects on brake performance for increased loads is also relevant. The HOVBT program seeks to provide relevant information to policy makers responsible for establishing load limits, beginning with providing test data for a combination tractor/trailer. This testing was conducted on a five-axle combination vehicle with tractor brakes meeting the Reduced Stopping Distance requirement rulemaking. This report provides a summary of the testing activities, the results of various analyses of the data, and recommendations for future research. Following a complete brake rebuild, instrumentation, and brake burnish, stopping tests were performed from 20 and 40 mph with various brake application pressures (15 psi, 25 psi, 35 psi, 45 psi, 55 psi, and full system pressure). These tests were conducted for various brake conditions at the following GVWs: 60,000, 80,000, 91,000, 97,000, 106,000, and 116,000 lb. The 80,000-lb GVWs included both balanced and unbalanced loads. The condition of the braking system was also varied. To introduce these defects, brakes (none, forward drive axle, or rear trailer axle) were made inoperative. In addition to the stopping tests, performance-based brake tests were conducted for the various loading and brake conditions. Analysis of the stopping test data showed the stopping distance to increase with load (as expected) and also showed that more braking force was generated by the drive axle brakes than the trailer axle brakes. The constant-pressure stopping test data revealed a linear relationship between brake application pressure and was used to develop an algorithm to normalize stopping data for weight and initial speed.

  20. Submersible sodium pump

    DOE Patents [OSTI]

    Brynsvold, G.V.; Lopez, J.T.; Olich, E.E.; West, C.W.

    1989-11-21T23:59:59.000Z

    An electromagnetic submerged pump has an outer cylindrical stator with an inner cylindrical conductive core for the submerged pumping of sodium in the cylindrical interstitial volume defined between the stator and core. The cylindrical interstitial volume is typically vertically oriented, and defines an inlet at the bottom and an outlet at the top. The outer stator generates upwardly conveyed toroidal magnetic fields, which fields convey preferably from the bottom of the pump to the top of the pump liquid sodium in the cold leg of a sodium cooled nuclear reactor. The outer cylindrical stator has a vertically disposed duct surrounded by alternately stacked layers of coil units and laminates. 14 figs.

  1. Flow pumping system for physiological waveforms

    E-Print Network [OSTI]

    Tsai, William; Sava?, Ömer

    2010-01-01T23:59:59.000Z

    controlled pulsatile pump system for physiological ?owthe task of ?ow waveform generation between two pumps: agear pump generates the mean component and a piston pump

  2. Well-pump alignment system

    DOE Patents [OSTI]

    Drumheller, Douglas S. (Cedar Crest, NM)

    1998-01-01T23:59:59.000Z

    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.

  3. Pump apparatus including deconsolidator

    DOE Patents [OSTI]

    Sonwane, Chandrashekhar; Saunders, Timothy; Fitzsimmons, Mark Andrew

    2014-10-07T23:59:59.000Z

    A pump apparatus includes a particulate pump that defines a passage that extends from an inlet to an outlet. A duct is in flow communication with the outlet. The duct includes a deconsolidator configured to fragment particle agglomerates received from the passage.

  4. Pioneering Heat Pump Project

    Broader source: Energy.gov [DOE]

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

  5. Irrigated Acreage Determination Procedures for Wastewater Application Equipment

    E-Print Network [OSTI]

    IRRIGATION SYSTEM North Carolina Cooperative Extension Service North Carolina State University #12;Irrigation that the nutrients contained in the wastewater can be used by growing crops. However, irrigation systems have in the application area. Step-by-step guidelines for field calibration of hard hose traveler irrigation systems

  6. Smarter irrigation Kati Migliaccio, PhD PE

    E-Print Network [OSTI]

    Migliaccio, Kati White

    Network ­ http://fawn.ifas.ufl.edu 3 #12;Irrigation systems · Use and popularity of automated systems · 47% more water is used by automated irrigation systems than non-automated systems for landscape irrigation sensor on all automated irrigation systems (s.373.62 Florida Statutes, 1991) · Miami-Dade County water

  7. Master Gardener Specialist Irrigation Efficiency October 24, 25, 26, 2012

    E-Print Network [OSTI]

    Conservation Education Programs Classroom Session of Basic Irrigation Components II. Basic Irrigation System and landscape irrigation systems from a water conservation perspective A. General overview of application Irrigation System Troubleshooting as related to Water Conservation Learning Objective: Know how to identify

  8. Research Indicates Sprinkler Irrigation Use Could Reduce Groundwater Nitrate Levels

    E-Print Network [OSTI]

    Nebraska-Lincoln, University of

    and Vicki Miller Irrigating with sprinkler instead of furrow irrigation systems can reduce shallow of irrigation systems on three corn test fields near Shelton, Neb., leave little doubt that if more center pivot Management System Evaluation Area near Shelton from spring 1991 to fall 1996. Irrigation methods

  9. No-till Cropping Systems for Stretching Limited Irrigation Supplies

    E-Print Network [OSTI]

    Nebraska-Lincoln, University of

    No-till Cropping Systems for Stretching Limited Irrigation Supplies Gary W. Hergert, Professor, limited irrigation), (2) irrigation water management (improved scheduling, automated systems, converting management is required to reduce the causes of that conflict. Lower groundwater levels in irrigated areas

  10. Causes and Management of Runoff from Surface Irrigation

    E-Print Network [OSTI]

    Ishida, Yuko

    . runoff in Surface irrigaTion Many orchards in California use surface irrigation systems such as furrow irrigation systems should be closely managed to mini- mize surface runoff. This requires turning the waterCauses and Management of Runoff from Surface Irrigation in Orchards Lawrence J. SchwankL, UC

  11. Normetex Pump Alternatives Study

    SciTech Connect (OSTI)

    Clark, E.

    2013-04-25T23:59:59.000Z

    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.

  12. Pressure charged airlift pump

    DOE Patents [OSTI]

    Campbell, Gene K. (Las Vegas, NV)

    1983-01-01T23:59:59.000Z

    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.

  13. Irrigation Training Program For Texas Agricultural Producers 

    E-Print Network [OSTI]

    Harris, B.L.

    2010-01-01T23:59:59.000Z

    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 ...

  14. Merced Irrigation District- PV Buydown Program

    Broader source: Energy.gov [DOE]

    Merced Irrigation District (MID) offers its residential, commercial and non-profit customers a rebate for installing solar electric photovoltaic (PV) systems on their homes and offices. The rebate...

  15. Modesto Irrigation District- Photovoltaic Rebate Program

    Broader source: Energy.gov [DOE]

    Modesto Irrigation District offers a photovoltaic rebate program for all of their electric customers. The peak output capacity of a system must be 1 kW or greater to participate. Systems up to 30...

  16. Evaluating Water Transfers in Irrigation Districts

    E-Print Network [OSTI]

    Ghimire, Narishwar

    2013-04-11T23:59:59.000Z

    The participation of irrigation districts (IDs) in surface water transfers from agriculture-to-municipal uses is studied by examining IDs’ economic and political behavior, comparing their performance with non-districts (non-IDs), and analyzing...

  17. Irrigation Monitoring with Soil Water Sensors 

    E-Print Network [OSTI]

    Enciso, Juan; Porter, Dana; Peries, Xavier

    2007-01-19T23:59:59.000Z

    Monitoring soil water content is essential if growers want to optimize production, conserve water, reduce environmental impacts and save money. This publication illustrates how soil moisture monitoring can improve irrigation decisions and how...

  18. Wick irrigation systems for subsistence farming

    E-Print Network [OSTI]

    Kuntz, Lauren B

    2013-01-01T23:59:59.000Z

    Irrigation on small-scale farms has been noted as a key method to help lift subsistence farmers out of poverty. With water scarity growing around the globe and lack of access to electricity still prevalent in rural areas, ...

  19. Increasing Water Use Efficiency Through Improved Orifice Design and Operational Procedures for Subirrigation Systems

    E-Print Network [OSTI]

    Wilke, O. C.; Hiler, E. A.

    systems were proposed. Drip irrigation lines successfully trailed a center-pivot irrigation system. Also a tractor-mounted implement was developed for moving individual drip irrigation laterals....

  20. III. Vacuum PumpsIII. Vacuum Pumps Gas transfer

    E-Print Network [OSTI]

    Liu, Kai

    (Gas Capture)(Gas Capture)( p )( p ) 10-3 - 10-4 torr10 10 torr Oil free, no moving parts Drawback: Oil Diffusion PumpB. High Vacuum: Oil Diffusion Pump (Wet, Gas Transfer)(Wet, Gas TransferIII. Vacuum PumpsIII. Vacuum Pumps Mechanism Gas transfer Gas capture FunctionFunction Roughing

  1. Mechanical Compression Heat Pumps 

    E-Print Network [OSTI]

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

    1986-01-01T23:59:59.000Z

    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...

  2. Absorption heat pump system

    DOE Patents [OSTI]

    Grossman, Gershon (Oak Ridge, TN)

    1984-01-01T23:59:59.000Z

    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.

  3. Absorption heat pump system

    DOE Patents [OSTI]

    Grossman, G.

    1982-06-16T23:59:59.000Z

    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.

  4. Abstract adiabatic charge pumping

    E-Print Network [OSTI]

    A. Joye; V. Brosco; F. Hekking

    2010-02-05T23:59:59.000Z

    This paper is devoted to the analysis of an abstract formula describing quantum adiabatic charge pumping in a general context. We consider closed systems characterized by a slowly varying time-dependent Hamiltonian depending on an external parameter $\\alpha$. The current operator, defined as the derivative of the Hamiltonian with respect to $\\alpha$, once integrated over some time interval, gives rise to a charge pumped through the system over that time span. We determine the first two leading terms in the adiabatic parameter of this pumped charge under the usual gap hypothesis. In particular, in case the Hamiltonian is time periodic and has discrete non-degenerate spectrum, the charge pumped over a period is given to leading order by the derivative with respect to $\\alpha$ of the corresponding dynamical and geometric phases.

  5. Policies supporting Heat Pump Technologies

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    Policies supporting Heat Pump Technologies in Canada IEA Heat Pump Workshop London, UK November 13 in the world, with an average of 16,995 kilowatt-hours per annum. #12;Canada's Context for Heat Pumps Impacts avenues: Ground source heat pumps for cold climates (heating and cooling) Reversible air source heat

  6. Well-pump alignment system

    DOE Patents [OSTI]

    Drumheller, D.S.

    1998-10-20T23:59:59.000Z

    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.

  7. Underground pumped hydroelectric storage

    SciTech Connect (OSTI)

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

    1984-07-01T23:59:59.000Z

    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.

  8. The sequestration efficiency of the biological pump

    E-Print Network [OSTI]

    DeVries, Tim; Primeau, Francois; Deutsch, Curtis

    2012-01-01T23:59:59.000Z

    Preformed phosphate, soft tissue pump and atmospheric CO 2 ,efficiency of the biological pump Tim DeVries, 1 Francoisproduces a “biological pump” that reduces the concentration

  9. Fluid pumping apparatus

    DOE Patents [OSTI]

    West, Phillip B. (Idaho Falls, ID)

    2006-01-17T23:59:59.000Z

    A method and apparatus suitable for coupling seismic or other downhole sensors to a borehole wall in high temperature and pressure environments. In one embodiment, one or more metal bellows mounted to a sensor module are inflated to clamp the sensor module within the borehole and couple an associated seismic sensor to a borehole wall. Once the sensing operation is complete, the bellows are deflated and the sensor module is unclamped by deflation of the metal bellows. In a further embodiment, a magnetic drive pump in a pump module is used to supply fluid pressure for inflating the metal bellows using borehole fluid or fluid from a reservoir. The pump includes a magnetic drive motor configured with a rotor assembly to be exposed to borehole fluid pressure including a rotatable armature for driving an impeller and an associated coil under control of electronics isolated from borehole pressure.

  10. Linking Texas irrigation: Consortium communicates research, education projects

    E-Print Network [OSTI]

    Supercinski, Danielle

    2008-01-01T23:59:59.000Z

    on the development and implementation of irrigation systems and practices in Texas, yet few efforts have been made to coordinate ongoing programs and results. With the formation of the Consortium for Irrigation Research and Education (CIRE) in 2007... research plots, and center pivot and drip irrigation systems at the Texas AgriLife Research and Extension Center at Uvalde. These plots are part of the Precision Irrigators Network project funded by Texas Water Development Board and the Rio Grande Basin...

  11. Reactor coolant pump flywheel

    DOE Patents [OSTI]

    Finegan, John Raymond; Kreke, Francis Joseph; Casamassa, John Joseph

    2013-11-26T23:59:59.000Z

    A flywheel for a pump, and in particular a flywheel having a number of high density segments for use in a nuclear reactor coolant pump. The flywheel includes an inner member and an outer member. A number of high density segments are provided between the inner and outer members. The high density segments may be formed from a tungsten based alloy. A preselected gap is provided between each of the number of high density segments. The gap accommodates thermal expansion of each of the number of segments and resists the hoop stress effect/keystoning of the segments.

  12. Fusion reactor pumped laser

    DOE Patents [OSTI]

    Jassby, Daniel L. (Princeton, NJ)

    1988-01-01T23:59:59.000Z

    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.

  13. Acoustical heat pumping engine

    DOE Patents [OSTI]

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

    1983-08-16T23:59:59.000Z

    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.

  14. Molecular heat pump

    E-Print Network [OSTI]

    Dvira Segal; Abraham Nitzan

    2005-10-11T23:59:59.000Z

    We propose a novel molecular device that pumps heat against a thermal gradient. The system consists of a molecular element connecting two thermal reservoirs that are characterized by different spectral properties. The pumping action is achieved by applying an external force that periodically modulates molecular levels. This modulation affects periodic oscillations of the internal temperature of the molecule and the strength of its coupling to each reservoir resulting in a net heat flow in the desired direction. The heat flow is examined in the slow and fast modulation limits and for different modulation waveforms, thus making it possible to optimize the device performance.

  15. Acoustical heat pumping engine

    DOE Patents [OSTI]

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

    1983-08-16T23:59:59.000Z

    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.

  16. Velocity pump reaction turbine

    DOE Patents [OSTI]

    House, Palmer A. (Walnut Creek, CA)

    1982-01-01T23:59:59.000Z

    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.

  17. Velocity pump reaction turbine

    DOE Patents [OSTI]

    House, Palmer A. (Walnut Creek, CA)

    1984-01-01T23:59:59.000Z

    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.

  18. Measuring axial pump thrust

    DOE Patents [OSTI]

    Suchoza, B.P.; Becse, I.

    1988-11-08T23:59:59.000Z

    An apparatus for measuring the hydraulic axial thrust of a pump under operation conditions is disclosed. The axial thrust is determined by forcing the rotating impeller off of an associated thrust bearing by use of an elongate rod extending coaxially with the pump shaft. The elongate rod contacts an impeller retainer bolt where a bearing is provided. Suitable measuring devices measure when the rod moves to force the impeller off of the associated thrust bearing and the axial force exerted on the rod at that time. The elongate rod is preferably provided in a housing with a heat dissipation mechanism whereby the hot fluid does not affect the measuring devices. 1 fig.

  19. Measuring axial pump thrust

    DOE Patents [OSTI]

    Suchoza, Bernard P. (McMurray, PA); Becse, Imre (Washington, PA)

    1988-01-01T23:59:59.000Z

    An apparatus for measuring the hydraulic axial thrust of a pump under operation conditions is disclosed. The axial thrust is determined by forcing the rotating impeller off of an associated thrust bearing by use of an elongate rod extending coaxially with the pump shaft. The elongate rod contacts an impeller retainer bolt where a bearing is provided. Suitable measuring devices measure when the rod moves to force the impeller off of the associated thrust bearing and the axial force exerted on the rod at that time. The elongate rod is preferably provided in a housing with a heat dissipation mechanism whereby the hot fluid does not affect the measuring devices.

  20. Impact of Potential Large-Scale Irrigation on the West African Monsoon and Its Dependence on Location of Irrigated Area

    E-Print Network [OSTI]

    Im, Eun-Soon

    This study investigates the impact of potential large-scale irrigation on the West African monsoon using the Massachusetts Institute of Technology regional climate model (MRCM). A new irrigation module is implemented to ...

  1. Design criteria for surface irrigation systems

    E-Print Network [OSTI]

    Wilke, Otto Charles

    1965-01-01T23:59:59.000Z

    ) n=o In this study the English system of units will be used. Therefore, for border irrigation, c is the average depth of surface storage in feet, q is the inflow in cubic feet per minute per foot of border width, and y is the accumulateci... infiltration in feet. For furrow irrigation, c is the average area of surface stcrage in square feet, q s the inflow into the furrow in cut?c feet per minute, and the accumulated infiltration, y, is given in cubic feet per foot cf furrcw. I' or both furrow...

  2. Evaluation of Smart Irrigation Controllers: Initial Bench Testing Results

    E-Print Network [OSTI]

    Swanson, Charles; Fipps, Guy

    COLLEGE OF AGRICULTURE AND LIFE SCIENCES TR-354 2009 Evaluation of Smart Irrigation Controllers: Initial Bench Testing Results July 2009 By Charles Swanson, Extension Associate Guy Fipps, Professor and Extension... Agricultural Engineer Rio Grande Basin Initiative Irrigation Technology Center Texas AgriLife Extension Service Texas Water Resources Institute Technical Report July 2009 TR 354 EVALUATION OF SMART IRRIGATION CONTROLLERS...

  3. Status and Trends of Irrigated Agriculture in Texas

    E-Print Network [OSTI]

    and available water. As shown in Figure 4, most agricultural irrigation is in West and South Texas, far fromStatus and Trends of Irrigated Agriculture in Texas Irrigation is critical to our food production and food security and is a vital component of Texas' productive agricultural economy.Texas ranks third

  4. tel-00422363,version1-6Oct2009 Irrigation management

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    to the complexity of irrigation systems. Instead, the approach should be evaluated for its effectiveness in supporting actors' decisions in irrigation system management, by enhancing their understanding of the effects, and captures adequately the complexity of an irrigation system, thus providing indications about its

  5. Flatness-based control of an irrigation canal using SCADA

    E-Print Network [OSTI]

    -time irrigation operations using a supervision, control, and data acquisition (SCADA) system with automatic centralized controller. Irrigation canals can be viewed and modeled as delay systems since it takes timeFlatness-based control of an irrigation canal using SCADA Tarek Rabbani, Simon Munier, David

  6. UNCORRECTED 2 Coordination in irrigation systems: An analysis

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    UNCORRECTED PROOF 1 2 Coordination in irrigation systems: An analysis 3 of the Lansing­Kremer model;UNCORRECTED PROOF 25 argued that a central control was inevitable for larger irrigation systems and hypoth- 26, there are various examples of complex irrigation systems and drainage systems 28 that have evolved without central

  7. A Design Model for Subsurface Drip Irrigation in Arizona

    E-Print Network [OSTI]

    Fay, Noah

    and useful tool when applied to the design of subsurface irrigation systems #12;Acknowledgements This projectA Design Model for Subsurface Drip Irrigation in Arizona Michael Liga Advisor: Dr. Don Slack Biosystems Engineering University of Arizona #12;Water Issue Subsurface Drip Irrigation · Benefits ·Increased

  8. Setting a Global Standard for Sustainable Irrigated Catchments

    E-Print Network [OSTI]

    Khan, Shahbaz

    Land and Water has won global recognition for innovative sustainable irrigation systems research Irrigation Systems research team, based in Griffith, will play a part in the ranking and accreditation as globally. CSIRO's Sustainable Irrigation Systems research team is helping farming communities translate

  9. Towards a Critical Mass Model for Collective Irrigation Management

    E-Print Network [OSTI]

    Richner, Heinz

    . Introduction Irrigation and water supply systems are of vital importance for agriculture in many regions, it has not been applied explicitly to irrigation man- agement in a dynamic way. System dynamics claims/downstream interactions in collective irrigation systems. The rationale of the critical mass model and a formal model

  10. 322 / JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING / SEPTEMBER/OCTOBER 2000 COMPREHENSIVE DESIGN OF MINIMUM COST IRRIGATION

    E-Print Network [OSTI]

    Chahar, B. R.

    OF MINIMUM COST IRRIGATION CANAL SECTIONS By Prabhata K. Swamee,1 Govinda C. Mishra,2 and Bhagu R. Chahar3

  11. Heat Pumps - Theory and Applications

    E-Print Network [OSTI]

    Altin, M.

    1982-01-01T23:59:59.000Z

    compressors (heat pumps) with actual applications in Monsanto. Guidelines for possible application areas are drawn from the analysis, and conclusions are drawn both about the usefulness of exergy analysis and about the heat pump application areas....

  12. Geothermal Heat Pump Grant Program

    Broader source: Energy.gov [DOE]

    The Maryland Energy Administration (MEA) offers rebates of $3,000 for residential geothermal heat pump systems and up to $4,500 for non-residential geothermal heat pump systems. The residential...

  13. Fuel pumping system and method

    DOE Patents [OSTI]

    Shafer, Scott F. (Morton, IL); Wang, Lifeng (Normal, IL) ,

    2006-12-19T23:59:59.000Z

    A fuel pumping system that includes a pump drive is provided. A first pumping element is operatively connected to the pump drive and is operable to generate a first flow of pressurized fuel. A second pumping element is operatively connected to the pump drive and is operable to generate a second flow of pressurized fuel. A first solenoid is operatively connected to the first pumping element and is operable to vary at least one of a fuel pressure and a fuel flow rate of the first flow of pressurized fuel. A second solenoid is operatively connected to the second pumping element and is operable to vary at least one of a fuel pressure and a fuel flow rate of the second flow of pressurized fuel.

  14. Fuel Pumping System And Method

    DOE Patents [OSTI]

    Shafer, Scott F. (Morton, IL); Wang, Lifeng (Normal, IL)

    2005-12-13T23:59:59.000Z

    A fuel pumping system that includes a pump drive is provided. A first pumping element is operatively connected to the pump drive and is operable to generate a first flow of pressurized fuel. A second pumping element is operatively connected to the pump drive and is operable to generate a second flow of pressurized fuel. A first solenoid is operatively connected to the first pumping element and is operable to vary at least one of a fuel pressure and a fuel flow rate of the first flow of pressurized fuel. A second solenoid is operatively connected to the second pumping element and is operable to vary at least one of a fuel pressure and a fuel flow rate of the second flow of pressurized fuel.

  15. Shrouded inducer pump

    DOE Patents [OSTI]

    Meng, S.Y.

    1989-08-08T23:59:59.000Z

    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.

  16. Explosively pumped laser light

    DOE Patents [OSTI]

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

    1991-01-01T23:59:59.000Z

    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.

  17. An Overview of the Operational Characteristics of Selected Irrigation Districts in the Texas Lower Rio Grande Valley: Brownsville Irrigation District

    E-Print Network [OSTI]

    Stubbs, Megan J.; Rister, M. Edward; Sturdivant, Allen W.; Lacewell, Ronald D.

    TR-274 August 2004 An Overview of the Operational Characteristics of Selected Irrigation Districts in the Texas Lower Rio Grande Valley: Brownsville Irrigation District Megan J. Stubbs M. Edward Rister Allen W... Grande Valley: Brownsville Irrigation District Megan J. Stubbs M. Edward Rister Allen W. Sturdivant Ronald D. Lacewell Texas Water Resources Institute Texas A&M University System This research was financially supported...

  18. Improving pumping system efficiency at coal plants

    SciTech Connect (OSTI)

    Livoti, W.C.; McCandless, S.; Poltorak, R. [Baldor Electric Co. (United States)

    2009-03-15T23:59:59.000Z

    The industry must employ ultramodern technologies when building or upgrading power plant pumping systems thereby using fuels more efficiently. The article discusses the uses and efficiencies of positive displacement pumps, centrifugal pumps and multiple screw pumps. 1 ref., 4 figs.

  19. New Irrigation System Design for Maximizing Irrigation Efficiency and Increasing Rainfall Utilization

    E-Print Network [OSTI]

    Lyle, W. M.; Bordovsky, J. P.

    A new concept in irrigation system design, which has the potential of significant savings in both water and energy requirements, has been developed and is under evaluation. The system is characterized by and has been labeled a low energy...

  20. Infusion Pump Informatics IMPACT STATEMENT

    E-Print Network [OSTI]

    Ginzel, Matthew

    Infusion Pump Informatics NEED IMPACT STATEMENT INITIATIVE Working with Purdue's Rosen Center for Advanced Computing, RCHE developed the Infusion Pump Informatics (IPI) System. IPI member hospitals upload their infusion pump alert data to the system each month. The system is web-based and highly interactive. Drawing

  1. North Village Ground Source Heat Pumps

    Broader source: Energy.gov [DOE]

    Overview: Installation of Ground Source Heat Pumps. Replacement of Aging Heat Pumps. Alignment with Furmans Sustainability Goals.

  2. Ground water provides drinking water, irrigation for

    E-Print Network [OSTI]

    Saldin, Dilano

    Ground water provides drinking water, irrigation for crops and water for indus- tries. It is also connected to surface waters, and maintains the flow of rivers and streams and the level of wetlands- tion of those along Lake Michigan, most communi- ties, farms and industries still rely on ground water

  3. SHINE Vacuum Pump Test Verification

    SciTech Connect (OSTI)

    Morgan, Gregg A; Peters, Brent

    2013-09-30T23:59:59.000Z

    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 3/4 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.

  4. Better couplings reduce pump maintenance

    SciTech Connect (OSTI)

    Polk, M.

    1987-01-01T23:59:59.000Z

    A test program conducted at the Tenneco Chalmette Refinery to find ways to improve pump reliability has provided evidence that curtailing pump vibration results in a significant reduction of pump repairs. It was further shown that vibration could be reduced by improving pump/motor alignment, regular lubrication practices and replacement of gear couplings with newer, advanced-design couplings. Extended field trials of two different types of couplings on operating motor/pump units in various parts of the refinery proved that both test couplings are capable of reducing vibration and cutting down on costly pump repairs, as compared with gear-type couplings used in the refinery. One coupling type reduced pump repairs by 70 percent, while the second type resulted in a 58-percent reduction. In a one-year long test program, urethane elastomer couplings increased pump life on ten test units by 406 percent when considering pump repairs directly related to coupling performance. Repairs not connected with coupling performance, such as electrical failure, acid attack on seals, lack of lubrication, etc., were not included in the calculations. Disc-type couplings under test on eight motor/pump units increased pump life by 142 percent, based on data related only to coupling performance.

  5. Water displacement mercury pump

    DOE Patents [OSTI]

    Nielsen, Marshall G. (Woodside, CA)

    1985-01-01T23:59:59.000Z

    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.

  6. Fusion reactor pumped laser

    DOE Patents [OSTI]

    Jassby, D.L.

    1987-09-04T23:59:59.000Z

    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.

  7. Multiple source heat pump

    DOE Patents [OSTI]

    Ecker, Amir L. (Duncanville, TX)

    1983-01-01T23:59:59.000Z

    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.

  8. Mechanical Compression Heat Pumps

    E-Print Network [OSTI]

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

    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... 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...

  9. Impact of Climate Change on Irrigation Water Availability, Crop Water Requirements and Soil Salinity in the SJV, CA

    E-Print Network [OSTI]

    Hopmans, Jan W; Maurer, Edwin P

    2008-01-01T23:59:59.000Z

    impact of climate change on irrigated agriculture in the 21potential climate change impacts on irrigated agriculture.climate change on sustainability of irrigated agriculture,

  10. Pump Life Cycle Costs: A Guide to LCC Analysis for Pumping Systems...

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

    Life Cycle Costs: A Guide to LCC Analysis for Pumping Systems - Executive Summary Pump Life Cycle Costs: A Guide to LCC Analysis for Pumping Systems - Executive Summary This...

  11. IRRIGATION RESEARCH CONTINUES AT SWMREC Ron Goldy, Mathieu Ngouajio and Jeff Andresen

    E-Print Network [OSTI]

    in irrigation systems. Drip irrigation research began in 2002 at the Southwest Michigan Research and ExtensionIRRIGATION RESEARCH CONTINUES AT SWMREC Ron Goldy, Mathieu Ngouajio and Jeff Andresen Irrigation) to solenoids which allowed treatments to be irrigated one hour when the tensiometer reached the determined

  12. EVALUATION OF THE EFFECTIVENESS OF TRUCK EFFICIENCY TECHNOLOGIES IN CLASS 8 TRACTOR-TRAILERS BASED ON A TRACTIVE ENERGY ANALYSIS USING MEASURED DRIVE CYCLE DATA

    SciTech Connect (OSTI)

    LaClair, Tim J [ORNL] [ORNL; Gao, Zhiming [ORNL] [ORNL; Fu, Joshua S. [University of Tennessee, Knoxville (UTK)] [University of Tennessee, Knoxville (UTK); Calcagno, Jimmy [University of Tennessee, Knoxville (UTK)] [University of Tennessee, Knoxville (UTK); Yun, Jeongran [University of Tennessee, Knoxville (UTK)] [University of Tennessee, Knoxville (UTK)

    2014-01-01T23:59:59.000Z

    Quantifying the fuel savings that can be achieved from different truck fuel efficiency technologies for a fleet s specific usage allows the fleet to select the combination of technologies that will yield the greatest operational efficiency and profitability. This paper presents an analysis of vehicle usage in a commercial vehicle fleet and an assessment of advanced efficiency technologies using an analysis of measured drive cycle data for a class 8 regional commercial shipping fleet. Drive cycle measurements during a period of a full year from six tractor-trailers in normal operations in a less-than-truckload (LTL) carrier were analyzed to develop a characteristic drive cycle that is highly representative of the fleet s usage. The vehicle mass was also estimated to account for the variation of loads that the fleet experienced. The drive cycle and mass data were analyzed using a tractive energy analysis to quantify the fuel efficiency and CO2 emissions benefits that can be achieved on class 8 tractor-trailers when using advanced efficiency technologies, either individually or in combination. Although differences exist among class 8 tractor-trailer fleets, this study provides valuable insight into the energy and emissions reduction potential that various technologies can bring in this important trucking application.

  13. Development and Qualification of Advancements in Submersible Transfer Pump Performance and Life, and Implications for Advancing and Supporting Processing Options - 13343

    SciTech Connect (OSTI)

    Stover, David L. [Curtiss-Wright EMD, Cheswick, PA 15024 (United States)] [Curtiss-Wright EMD, Cheswick, PA 15024 (United States); Bryan, Wes; Kelly, James [Washington River Protection Solutions, Richland, WA 99352 (United States)] [Washington River Protection Solutions, Richland, WA 99352 (United States)

    2013-07-01T23:59:59.000Z

    From the 1950's through the 1990's, relatively inexpensive, 'off-the-shelf' type, vertical turbine pumps (VTP) were used to transfer Hanford waste. The technology of those pumps was rooted primarily in the mining and agricultural (irrigation) industries. HNF-3218, Double Shell Tank (DST) Transfer Pump History and Reliability Report, 1998, provides a summary of Hanford DST pump history to that date. Such pumps operated in the Hanford radioactive waste environment for an average of only 400 hours before failure. However, at that time, operating life was not a driving criteria within the Department of Energy (DOE) complex, as the failure of transfer pumps represented a relatively low replacement and disposal cost. The Environmental Protection Agency (EPA) issuance of the 'Debris Rule' in 1992, which mandated that mixed radioactive waste contaminated equipment be decontaminated to a 'low level waste' category prior to burial, elevated the significance of transfer pump reliability and decontamination capability as life-cycle cost criteria. Minimizing the frequency of transfer pump failures and design for decontamination became significantly important and served to drive the need toward specific, designed for application pumps to meet this challenge. To this end, Washington River Protection Solutions (WRPS) and the supplier, Curtiss-Wright EMD (EMD), have recently collaborated on an intense program to further transfer pump technology and performance. (authors)

  14. Chemical heat pump

    DOE Patents [OSTI]

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

    1980-01-01T23:59:59.000Z

    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.

  15. Electromagnetic pump stator coil

    DOE Patents [OSTI]

    Fanning, A.W.; Dahl, L.R.

    1996-06-25T23:59:59.000Z

    An electrical stator coil for an electromagnetic pump includes a continuous conductor strip having first and second terminals at opposite ends thereof and an intermediate section disposed therebetween. The strip is configured in first and second coil halves, with the first coil half including a plurality of windings extending from the first terminal to the intermediate section, and the second coil half including a plurality of windings extending from the second terminal to the intermediate section. The first and second coil halves are disposed coaxially, and the first and second terminals are disposed radially inwardly therefrom with the intermediate section being disposed radially outwardly therefrom. 9 figs.

  16. Absorption heat pump system

    DOE Patents [OSTI]

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

    1984-01-01T23:59:59.000Z

    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.

  17. Electromagnetic pump stator coil

    DOE Patents [OSTI]

    Fanning, Alan W. (San Jose, CA); Dahl, Leslie R. (Livermore, CA)

    1996-01-01T23:59:59.000Z

    An electrical stator coil for an electromagnetic pump includes a continuous conductor strip having first and second terminals at opposite ends thereof and an intermediate section disposed therebetween. The strip is configured in first and second coil halves, with the first coil half including a plurality of windings extending from the first terminal to the intermediate section, and the second coil half including a plurality of windings extending from the second terminal to the intermediate section. The first and second coil halves are disposed coaxially, and the first and second terminals are disposed radially inwardly therefrom with the intermediate section being disposed radially outwardly therefrom.

  18. Initial Evaluation of Smart Irrigation Controllers: Year Two (2009) Results

    E-Print Network [OSTI]

    Swanson, Charles; Fipps, Guy

    COLLEGE OF AGRICULTURE AND LIFE SCIENCES TR-364 2010 Initial Evaluation of Smart Irrigation Controllers: Year Two (2009) Results By: Charles Swanson and Guy Fipps, P.E. Department of Biological... OF SMART IRRIGATION CONTROLLERS: YEAR TWO (2009) RESULTS 1 By Charles Swanson and Guy Fipps, P.E 2 April 27, 2010 A Report Prepared for Task 2 of the Rio Grande Basin Initiative Irrigation Technology Center Texas AgriLIFE Extension Service...

  19. Energy Use and Irrigation Scheduling for Efficient Water Use

    E-Print Network [OSTI]

    Marek, Thomas; Porter, Dana

    Engineer USDA ARS Bushland, Texas Nicholas Kenny Extension Program Specialist I Texas AgriLife Extension Service, Amarillo, Texas and Jed Moorhead Technician II Texas AgriLife Research Amarillo, Texas September 15, 2010 2 Energy Use... of soils, plants is crucial to efficient irrigation. Southwest Farm Press. October 2, 2008. Posted online Oct 14, 2008 at: http://southwestfarmpress.com/irrigation/soil-irrigation-1014. Presentations at Extension meetings Kenny, Nicholas. 2008...

  20. Some Principles and Practices in the Irrigation of Texas Soils.

    E-Print Network [OSTI]

    Bloodworth, Morris E.

    1959-01-01T23:59:59.000Z

    exist among soil, water and plants. Good irrigation practices also must take into ac- t such important factors as soil fertility. amount and quality of water, adapted crops and varieties, land xration for irrigation, water distribution over the land..., irrigation timing to suit crop needs, rate of water application for a particular soil type, capacity of soils to store and release water, rates of seeding and root development and distribution within the soil storage reservoir for obtaining both water...

  1. Outlook for Energy and Implications for Irrigated Agriculture 

    E-Print Network [OSTI]

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

    1977-01-01T23:59:59.000Z

    TR- 87 1977 Outlook for Energy and Implications for Irrigated Agriculture W.P. Patton R.D. Lacewell Texas Water Resources Institute Texas A&M University ...

  2. Columbia Rural Electric Association- Irrigation Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Columbia REA, through the Bonneville Power Administration, offers an irrigation energy efficiency program for its agricultural customers. Stationary systems are not eligible for this program due to...

  3. Modesto Irrigation District- Commercial Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Modesto Irrigation District’s Commercial Power Saver Rebate Program offers incentives to commercial, industrial, and agricultural customers for the purchase and installation of qualifying energy...

  4. Modesto Irrigation District- New Home Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Modesto Irrigation District's MPower New Home Program provides incentives to builders and homeowners for designing and building energy-efficient homes. Eligible homes must meet the guidelines for...

  5. Modesto Irrigation District- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Modesto Irrigation District’s Home Rebate Program offers residential customers cash rebates for the purchase and installation of qualifying energy efficient products installed in existing homes....

  6. Turlock Irrigation District- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Turlock Irrigation District (TID) offers a residential rebate program for customers who install energy-efficient equipment in their homes. Eligible equipment includes

  7. Best Management Practice #5: Water-Efficient Irrigation

    Broader source: Energy.gov [DOE]

    Water efficiency must be considered from the initial irrigation system design phase through installation to ensure optimal performance. Consistent management and maintenance is also essential.

  8. Diode-pumped laser with improved pumping system

    DOE Patents [OSTI]

    Chang, Jim J.

    2004-03-09T23:59:59.000Z

    A laser wherein pump radiation from laser diodes is delivered to a pump chamber and into the lasing medium by quasi-three-dimensional compound parabolic concentrator light channels. The light channels have reflective side walls with a curved surface and reflective end walls with a curved surface. A flow tube between the lasing medium and the light channel has a roughened surface.

  9. Chemical heat pump

    DOE Patents [OSTI]

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

    1984-01-01T23:59:59.000Z

    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.

  10. Chemical heat pump

    DOE Patents [OSTI]

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

    1984-01-01T23:59:59.000Z

    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.

  11. Chemical heat pump

    DOE Patents [OSTI]

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

    1984-01-01T23:59:59.000Z

    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.

  12. Chemical heat pump

    DOE Patents [OSTI]

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

    1981-01-01T23:59:59.000Z

    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.

  13. Heat pump apparatus

    DOE Patents [OSTI]

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

    1983-01-01T23:59:59.000Z

    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.

  14. Irrigation Water Management for the Texas High Plains: A Research Summary

    E-Print Network [OSTI]

    Sweeten, John M.; Jordan, Wayne R.

    at later stages of crop growth especially for conventional graded furrow irrigation systems. Conservation tillage can reduce the need for preplant irrigation of sorghum through improved soil moisture storage. Irrigation water use efficiencies may reach 400...

  15. UBC Social Ecological Economic Development Studies (SEEDS) Student Report An Investigation into New SUB Rooftop Garden Irrigations Systems

    E-Print Network [OSTI]

    SUB Rooftop Garden Irrigations Systems Dale Chang Braeden Hammerl Bhupinder Manhas University Garden Irrigation Systems A Triple-Bottom-Analysis of Irrigation Systems for the New SUB APSC 262 By Dale..............................................................................................................................5 2.0 Over Head Irrigation Systems

  16. Timing the Last Irrigation Using COTMAN in a LEPA Irrigation System at AG-CARES, Lamesa, Tommy Doederlein, Texas Cooperative Extension, Lamesa, Texas, Brant Baugh, Randy Boman

    E-Print Network [OSTI]

    Mukhtar, Saqib

    TITLE: Timing the Last Irrigation Using COTMAN in a LEPA Irrigation System at AG-CARES, Lamesa, TX past cutout in a LEPA irrigation system. AG-CARES Farm, Lamesa, Texas. 2003. Target HU Accumulation with four replications Plot size: 8 rows by 180 feet Planting Date: May 8 Variety: PM2628RR Irrigation: LEPA

  17. A solar powered distillation plant and pump station for use in ocean side desert areas

    SciTech Connect (OSTI)

    Dearien, J.A.; Priebe, S.J.

    1994-12-31T23:59:59.000Z

    There are thousands of miles of ocean shoreline which could sustain a productive human existence if sufficient fresh water were available for human consumption and for irrigation of crops. While solar stills can be built to produce fresh water at or close to sea level, raising water to a height sufficient to irrigate crops, even with minimum water usage crops, requires a significant amount of energy. This paper describes a ``no-external power`` process by which seawater can be purified and raised to a height above sea level sufficient to carry on a productive living in certain areas of the world. This device, the Solar Evaporation and Pumping System (SEAPS) is described as to function and areas of use.

  18. Flow assurance and multiphase pumping

    E-Print Network [OSTI]

    Nikhar, Hemant G.

    2009-05-15T23:59:59.000Z

    the number of deepwater developments between 1994 and 2004. Number of new deepwater fields coming up continues to increase year by year. Fig. 5: Number of Deepwater Developments 6 9 The first subsea Christmas tree was installed in 1961 and it took...??????????????????????????????????????.. 12 Subsea Process?????????????????????????????????????. 12 VASPS??????????????????????????????????????????. 13 Multiphase Pumping??????????????????????????????????? 14 Inbuilt Capability of Twin-Screw Pumps to Handle Slugs???????????????? 16...

  19. Heat Pump Strategies and Payoffs 

    E-Print Network [OSTI]

    Gilbert, J. S.

    1982-01-01T23:59:59.000Z

    After evaluating numerous waste heat sources and heat pump designs for energy recovery, we have become aware that a great deal of confusion exists about the economics of heat pumps. The purpose of this article is to present some simple formulas...

  20. Heat Pump Strategies and Payoffs

    E-Print Network [OSTI]

    Gilbert, J. S.

    1982-01-01T23:59:59.000Z

    After evaluating numerous waste heat sources and heat pump designs for energy recovery, we have become aware that a great deal of confusion exists about the economics of heat pumps. The purpose of this article is to present some simple formulas...

  1. Threshold values of autoresonant pumping

    E-Print Network [OSTI]

    O. M. Kiselev

    2013-03-19T23:59:59.000Z

    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.

  2. Development Requirements for Advanced Industrial Heat Pumps 

    E-Print Network [OSTI]

    Chappell, R. N.; Priebe, S. J.; Bliem, C. J.; Mills, J. I.

    1985-01-01T23:59:59.000Z

    DOE is attempting to advance the use of heat pumps to save energy in industrial processes. The approach has emphasized developing better heat pump technology and transferring that technology to the private sector. DOE requires that heat pump...

  3. RESEARCH ARTICLE Lifespan Extension and Increased Pumping

    E-Print Network [OSTI]

    Gronostajski, Richard M.

    RESEARCH ARTICLE Lifespan Extension and Increased Pumping Rate Accompany Pharyngeal Muscle in multiple behavioral defects; slower pharyngeal pumping rate, impaired egg laying, defective motility nfi-1 must be expressed to rescue the pharyngeal pumping defect. Expression of nfi-1 from

  4. Development Requirements for Advanced Industrial Heat Pumps

    E-Print Network [OSTI]

    Chappell, R. N.; Priebe, S. J.; Bliem, C. J.; Mills, J. I.

    DOE is attempting to advance the use of heat pumps to save energy in industrial processes. The approach has emphasized developing better heat pump technology and transferring that technology to the private sector. DOE requires that heat pump...

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

    E-Print Network [OSTI]

    Mukherjee, Monobina

    2013-01-01T23:59:59.000Z

    Impact of Climate Change on Irrigated Agriculture inimpact of climate change on irrigated agriculture inimpacts of climate change in agriculture, it is essential to

  6. Shallow groundwater and soil chemistry response to 3 years of subsurface drip irrigation using coalbed-methane-produced water

    SciTech Connect (OSTI)

    Bern, C. R.; Boehlke, A. R.; Engle, M. A.; Geboy, N. J.; Schroeder, K. T.; Zupancic, J. W.

    2013-12-01T23:59:59.000Z

    Disposal of produced waters, pumped to the surface as part of coalbed methane (CBM) development, is a significant environmental issue in the Wyoming portion of the Powder River Basin, USA. High sodium adsorption ratios (SAR) of the waters could degrade agricultural land, especially if directly applied to the soil surface. One method of disposing of CBM water, while deriving beneficial use, is subsurface drip irrigation (SDI), where acidified CBM waters are applied to alfalfa fields year-round via tubing buried 0.92 m deep. Effects of the method were studied on an alluvial terrace with a relatively shallow depth to water table (?3 m). Excess irrigation water caused the water table to rise, even temporarily reaching the depth of drip tubing. The rise corresponded to increased salinity in some monitoring wells. Three factors appeared to drive increased groundwater salinity: (1) CBM solutes, concentrated by evapotranspiration; (2) gypsum dissolution, apparently enhanced by cation exchange; and (3) dissolution of native Na–Mg–SO{sub 4} salts more soluble than gypsum. Irrigation with high SAR (?24) water has increased soil saturated paste SAR up to 15 near the drip tubing. Importantly though, little change in SAR has occurred at the surface.

  7. Dual source heat pump

    DOE Patents [OSTI]

    Ecker, Amir L. (Dallas, TX); Pietsch, Joseph A. (Dallas, TX)

    1982-01-01T23:59:59.000Z

    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.

  8. Irrigation Training Program For Texas Agricultural Producers

    E-Print Network [OSTI]

    Harris, B.L.

    that culminated with the completion of two editions (North and South) of an ITP manual, an all-inclusive resource manual for irrigators, technicians, crop consultants and other professionals within the industry, and the completion of six training conferences...-15-08 An electronic version of the ITP Manual was submitted to TWRI during this quarter.? TWRI refined the ITP manual to create a more user-friendly format so that growers can easily access the vast amount ? of information and resources in the manual. 9...

  9. Some effects of irrigation on peach quality

    E-Print Network [OSTI]

    Kent, Laura Katherine

    1979-01-01T23:59:59.000Z

    ~'major Subject: Food Science and Technology SOME EFFECTS OF IRRIGATION ON PEACH QUALITY A Thesis by Laura Katherine Kent Approved as to style and content by: Chairman o mmittee Head o Department) er Member August 1979 ABSTRACT Some Effects...-significant difference between reps and within trees of reps illustrated proper experimental design and orchard maintenance. Picking 1 (Pr & F=0. 4021) picking 2 (Pr & F=0. 3205) and picking 4 (Pr & F=0. 6140) were non- significant; however, picking 3 (Pr & F=O. 0001...

  10. Imperial Irrigation District | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetecGtel JumpCounty,Jump to: navigation, search Stage 3Imperial Irrigation

  11. Vera Irrigation District | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlin BaxinUmwelt ManagementVera Irrigation District Jump to: navigation,

  12. Pumping System Assessment Tool | Department of Energy

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

    of pumping system operations. PSAT uses achievable pump performance data from Hydraulic Institute standards and motor performance data from the MotorMaster+ database to...

  13. Human Health Science Building Geothermal Heat Pumps

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

    HUMAN HEALTH SCIENCE BLDG GEO HEAT PUMP SYSTEMS Principal Investigator Source Heat Pumps Demo Projects May 20, 2010 This presentation does not contain any proprietary confidential,...

  14. Initial Evaluation of Smart Irrigation Controllers: Year Two (2009) Results 

    E-Print Network [OSTI]

    Swanson, Charles; Fipps, Guy

    2010-01-01T23:59:59.000Z

    to determine their performance and reliability under Texas conditions from an “end-user” point of view. The “end-user” is considered to be the landscape or irrigation professional (such as a Licensed Irrigator in Texas) installing the controller. During...

  15. Effects of Great Plains Irrigation on Regional Climate

    E-Print Network [OSTI]

    Huber, David B.

    2011-08-31T23:59:59.000Z

    of radiative and turbulent fluxes, the development of the planetary boundary layer, and the transport of water vapor from the regions of irrigation. The first two effects have the potential to drastically alter the climate of irrigated regions of the Great...

  16. Czech Archaeologists in Uzbekistan Discover Bronze Age Irrigation System

    E-Print Network [OSTI]

    Cerveny, Vlastislav

    Czech Archaeologists in Uzbekistan Discover Bronze Age Irrigation System Compiled 20.11.2014 16 they discovered was settlements dating back to the Iron and Bronze Ages, including a well-preserved irrigation system. The Paschurt Valley is located in the south of Uzbekistan, a country which has become

  17. Fluid Dynamics in Sucker Rod Pumps

    SciTech Connect (OSTI)

    Cutler, R.P.; Mansure, A.J.

    1999-01-14T23:59:59.000Z

    Sucker rod pumps are installed in approximately 90% of all oil wells in the U.S. Although they have been widely used for decades, there are many issues regarding the fluid dynamics of the pump that have not been fully investigated. A project was conducted at Sandia National Laboratories to develop unimproved understanding of the fluid dynamics inside a sucker rod pump. A mathematical flow model was developed to predict pressures in any pump component or an entire pump under single-phase fluid and pumping conditions. Laboratory flow tests were conducted on instrumented individual pump components and on a complete pump to verify and refine the model. The mathematical model was then converted to a Visual Basic program to allow easy input of fluid, geometry and pump parameters and to generate output plots. Examples of issues affecting pump performance investigated with the model include the effects of viscosity, surface roughness, valve design details, plunger and valve pressure differentials, and pumping rate.

  18. Research grants (For periods including 2004) Dynamic intra-seasonal irrigation management under water scarcity, water quality, irrigation

    E-Print Network [OSTI]

    Prigozhin, Leonid

    Research grants (For periods including 2004) Dynamic intra-seasonal irrigation management under water scarcity, water quality, irrigation technology and environmental constraints. Y. Tsur, U. Shani, D Remote Sensing Methods and Geographic Information Systems A. Karnieli Grantor: US-AID Duration: 2004

  19. Estimates of Savings Achievable from Irrigation Controller

    SciTech Connect (OSTI)

    Williams, Alison; Fuchs, Heidi; Whitehead, Camilla Dunham

    2014-03-28T23:59:59.000Z

    This paper performs a literature review and meta-analysis of water savings from several types of advanced irrigation controllers: rain sensors (RS), weather-based irrigation controllers (WBIC), and soil moisture sensors (SMS).The purpose of this work is to derive average water savings per controller type, based to the extent possible on all available data. After a preliminary data scrubbing, we utilized a series of analytical filters to develop our best estimate of average savings. We applied filters to remove data that might bias the sample such as data self-reported by manufacturers, data resulting from studies focusing on high-water users, or data presented in a non-comparable format such as based on total household water use instead of outdoor water use. Because the resulting number of studies was too small to be statistically significant when broken down by controller type, this paper represents a survey and synthesis of available data rather than a definitive statement regarding whether the estimated water savings are representative.

  20. Electromagnetically driven peristaltic pump

    DOE Patents [OSTI]

    Marshall, Douglas W. (Blackfoot, ID)

    2000-01-01T23:59:59.000Z

    An electromagnetic peristaltic pump apparatus may comprise a main body section having an inlet end and an outlet end and a flexible membrane which divides the main body section into a first cavity and a second cavity. The first cavity is in fluid communication with the inlet and outlet ends of the main body section. The second cavity is not in fluid communication with the first cavity and contains an electrically conductive fluid. The second cavity includes a plurality of electrodes which are positioned within the second cavity generally adjacent the flexible membrane. A magnetic field generator produces a magnetic field having a plurality of flux lines at least some of which are contained within the second cavity of the main body section and which are oriented generally parallel to a flow direction in which a material flows between the inlet and outlet ends of the main body section. A control system selectively places a voltage potential across selected ones of the plurality of electrodes to deflect the flexible membrane in a wave-like manner to move material contained in the first cavity between the inlet and outlet ends of the main body section.

  1. Method for controlling powertrain pumps

    DOE Patents [OSTI]

    Sime, Karl Andrew; Spohn, Brian L; Demirovic, Besim; Martini, Ryan D; Miller, Jean Marie

    2013-10-22T23:59:59.000Z

    A method of controlling a pump supplying a fluid to a transmission includes sensing a requested power and an excess power for a powertrain. The requested power substantially meets the needs of the powertrain, while the excess power is not part of the requested power. The method includes sensing a triggering condition in response to the ability to convert the excess power into heat in the transmission, and determining that an operating temperature of the transmission is below a maximum. The method also includes determining a calibrated baseline and a dissipation command for the pump. The calibrated baseline command is configured to supply the fluid based upon the requested power, and the dissipation command is configured to supply additional fluid and consume the excess power with the pump. The method operates the pump at a combined command, which is equal to the calibrated baseline command plus the dissipation command.

  2. Complex Compound Chemical Heat Pumps 

    E-Print Network [OSTI]

    Rockenfeller, U.; Langeliers, J.; Horn, G.

    1987-01-01T23:59:59.000Z

    Complex-compound solid-vapor fluid pairs can be used in heat of reaction heat pumps for temperature amplifier (TA) as well as heat amplifier (HA) cycle configurations. This report describes the conceptual hardware design for complex compound...

  3. Industrial Heat Pump Design Options

    E-Print Network [OSTI]

    Gilbert, J. S.

    There are numerous industries that can incorporate heat pumps into their operations to save energy costs and payoff the investment in well under two years. Many of these industries can cut energy costs associated with evaporation by over 75...

  4. Energy 101: Geothermal Heat Pumps

    Broader source: Energy.gov [DOE]

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

  5. Industrial Heat Pump Design Options 

    E-Print Network [OSTI]

    Gilbert, J. S.

    1985-01-01T23:59:59.000Z

    There are numerous industries that can incorporate heat pumps into their operations to save energy costs and payoff the investment in well under two years. Many of these industries can cut energy costs associated with evaporation by over 75...

  6. Process Cooling Pumping Systems Analysis

    E-Print Network [OSTI]

    Sherman, C.

    2008-01-01T23:59:59.000Z

    An analysis of the mill water pumping systems at a North American manufacturing facility was conducted late las year and the following issues were observed: 1. Overpumping – Both systems were overpumped to a significant degree against...

  7. Transverse pumped laser amplifier architecture

    DOE Patents [OSTI]

    Bayramian, Andrew James; Manes, Kenneth; Deri, Robert; Erlandson, Al; Caird, John; Spaeth, Mary

    2013-07-09T23:59:59.000Z

    An optical gain architecture includes a pump source and a pump aperture. The architecture also includes a gain region including a gain element operable to amplify light at a laser wavelength. The gain region is characterized by a first side intersecting an optical path, a second side opposing the first side, a third side adjacent the first and second sides, and a fourth side opposing the third side. The architecture further includes a dichroic section disposed between the pump aperture and the first side of the gain region. The dichroic section is characterized by low reflectance at a pump wavelength and high reflectance at the laser wavelength. The architecture additionally includes a first cladding section proximate to the third side of the gain region and a second cladding section proximate to the fourth side of the gain region.

  8. Complex Compound Chemical Heat Pumps

    E-Print Network [OSTI]

    Rockenfeller, U.; Langeliers, J.; Horn, G.

    Complex-compound solid-vapor fluid pairs can be used in heat of reaction heat pumps for temperature amplifier (TA) as well as heat amplifier (HA) cycle configurations. This report describes the conceptual hardware design for complex compound...

  9. Balanced pressure gerotor fuel pump

    DOE Patents [OSTI]

    Raney, Michael Raymond; Maier, Eugen

    2004-08-03T23:59:59.000Z

    A gerotor pump for pressurizing gasoline fuel is capable of developing pressures up to 2.0 MPa with good mechanical and volumetric efficiency and satisfying the durability requirements for an automotive fuel pump. The pump has been designed with optimized clearances and by including features that promote the formation of lubricating films of pressurized fuel. Features of the improved pump include the use of a shadow port in the side plate opposite the outlet port to promote balancing of high fuel pressures on the opposite sides of the rotors. Inner and outer rotors have predetermined side clearances with the clearances of the outer rotor being greater than those of the inner rotor in order to promote fuel pressure balance on the sides of the outer rotor. Support of the inner rotor and a drive shaft on a single bushing with bearing sleeves maintains concentricity. Additional features are disclosed.

  10. Operating Instructions CASSEHE PUMP DRIVE UNIT

    E-Print Network [OSTI]

    Kleinfeld, David

    4 · Operating Instructions CASSEHE® PUMP DRIVE UNIT Catalog No. 72-510-000 72-510-220 PUMPING The squeezing action of rollers on tubing causes the peristaltic pumping action. The flow is proportionate to the speied of the rollers and the inside diameter of the tubing, both of which can be varied. Pumping

  11. Women's Health: Guidelines for Breast Pump Coverage

    E-Print Network [OSTI]

    Grishok, Alla

    Women's Health: Guidelines for Breast Pump Coverage AETNA CIGNA UHC In-Network covered 100%, no out-of-network coverage. · The member would need to obtain the breast pump from a network provider. Breast pumps purchased-of-network provider facility. The member has the option to rent a breast pump or purchase a personal double

  12. Heat pump market and statistics report 2013

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    #12;Heat pump market and statistics report 2013 Thomas Nowak Secretary General European Heat Pump Summit 15.10./16.10.2013 | Nuremberg #12;European Heat Pump Association (EHPA) · 107 members from 22 countries (status 08/2013) ­ Heat pump manufacturers ­ Component manufacturers ­ National associations

  13. Heat Pump Markets UK in Europe

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    Heat Pump Markets UK in Europe IEA Heat Pump Workshop 13. November 2012 Zoltan Karpathy #12;2 Excellence in Market Intelligence Agenda About BSRIA WMI UK in the European Heat Pump Market Heating BSRIA WMI UK in the European Heat Pump Market Heating Technologies in New and Existing Buildings Hybrid

  14. Il pumping lemma Proprieta' di chiusura

    E-Print Network [OSTI]

    Rossi, Francesca

    Il pumping lemma Proprieta' di chiusura Proprieta' di decisione Proprieta' dei linguaggi regolari Proprieta' dei linguaggi regolari #12;Il pumping lemma Proprieta' di chiusura Proprieta' di decisione Proprieta' dei Linguaggi regolari Pumping Lemma. Ogni linguaggio regolare soddisfa il pumping lemma. Se

  15. Understanding the Effects of Groundwater Pumping on

    E-Print Network [OSTI]

    Understanding the Effects of Groundwater Pumping on Streamflow Depletion through USGS Capture Maps (Vertical and Horizontal Distance from Streams) Pumping rates and pumping schedules The timing source of water to the wells in years to decades. 0 10 mi #12;Pumping Can Affect Other Hydrologic

  16. Laminated electromagnetic pump stator core

    DOE Patents [OSTI]

    Fanning, A.W.

    1995-08-08T23:59:59.000Z

    A stator core for an electromagnetic pump includes a plurality of circumferentially abutting tapered laminations extending radially outwardly from a centerline axis to collectively define a radially inner bore and a radially outer circumference. Each of the laminations includes radially inner and outer edges and has a thickness increasing from the inner edge toward the outer edge to provide a substantially continuous path adjacent the circumference. This pump is used in nuclear fission reactors. 19 figs.

  17. Pump control system for windmills

    DOE Patents [OSTI]

    Avery, Don E. (45-437 Akimala St., Honolulu, HI 96744)

    1983-01-01T23:59:59.000Z

    A windmill control system having lever means, for varying length of stroke of the pump piston, and a control means, responsive to the velocity of the wind to operate the lever means to vary the length of stroke and hence the effective displacement of the pump in accordance with available wind energy, with the control means having a sensing member separate from the windmill disposed in the wind and displaceable thereby in accordance with wind velocity.

  18. daho has approximately 4 million acres of irrigated agricultural land. Most of it is in pas-

    E-Print Network [OSTI]

    O'Laughlin, Jay

    (59 percent) or surface irrigation systems (40 percent), with only a very small amount (less than 1 percent) in micro-irrigation systems (trickle or drip) (table 2). The selection of an irrigation system. In a ideal irrigation system, on a field with uniform soil properties, water is supplied uni- formly over

  19. Spatial Variability Considerations in Interpreting Soil Moisture Measurements for Irrigation Scheduling

    E-Print Network [OSTI]

    O'Laughlin, Jay

    . Irrigation uniformity describes how evenly the irrigation system distributes water over the agricultural is available in University of Idaho Cooperative Extension System Bulletin 824, "Irrigation Uniformity crop water requirements to be estimated in advance. Most irrigation systems are incapable of "catching

  20. Reducing Turfgrass Water Consumption using Sensor Nodes and an Adaptive Irrigation Controller

    E-Print Network [OSTI]

    Lawrence, Ramon

    sensor and irrigation control system that reduces water consumption for residential turfgrass irrigation. It has been estimated that 50- 75% of residential water use is for irrigation. Current systems are exceptionally poor at adapting irrigation to meet demand, pri- marily due to incomplete information for system

  1. CropIrri: A DECISION SUPPORT SYSTEM FOR CROP IRRIGATION MANAGEMENT

    E-Print Network [OSTI]

    CropIrri: A DECISION SUPPORT SYSTEM FOR CROP IRRIGATION MANAGEMENT Yi Zhang1 , Liping Feng1,* 1: A field crop irrigation management decision-making system (CropIrri) was developed based on the soil water of optimal irrigation methods and irrigation decision support system have obtained important achievements (J

  2. Measure Guideline: Replacing Single-Speed Pool Pumps with Variable Speed Pumps for Energy Savings

    SciTech Connect (OSTI)

    Hunt, A.; Easley, S.

    2012-05-01T23:59:59.000Z

    The report evaluates potential energy savings by replacing traditional single-speed pool pumps with variable speed pool pumps, and provide a basic cost comparison between continued uses of traditional pumps verses new pumps. A simple step-by-step process for inspecting the pool area and installing a new pool pump follows.

  3. Texas Legislative and Irrigation Districts of the Rio Grande River Basin: A Map Series 

    E-Print Network [OSTI]

    Leigh, Eric; Fipps, G.

    2008-01-01T23:59:59.000Z

    Improvement District No.3 HCWID3 La Feria Irrigation District-Cameron County No.3 La Feria Santa Cruz Irrigation District No.15 Santa Cruz Santa Maria Irrigation District-Cameron County No.4 Santa Maria United Irrigation District of Hidalgo County United....6 34,913 Hidalgo County Municipal Utility District No.1 1,120 Hidalgo County Water Improvement District No.3 9,753 La Feria Irrigation District-Cameron County No.3 75,626 Santa Cruz Irrigation District No.15 75,080 Santa Maria Irrigation...

  4. Texas Legislative and Irrigation Districts of the Rio Grande River Basin: A Map Series

    E-Print Network [OSTI]

    Leigh, Eric; Fipps, G.

    Improvement District No.3 HCWID3 La Feria Irrigation District-Cameron County No.3 La Feria Santa Cruz Irrigation District No.15 Santa Cruz Santa Maria Irrigation District-Cameron County No.4 Santa Maria United Irrigation District of Hidalgo County United....6 34,913 Hidalgo County Municipal Utility District No.1 1,120 Hidalgo County Water Improvement District No.3 9,753 La Feria Irrigation District-Cameron County No.3 75,626 Santa Cruz Irrigation District No.15 75,080 Santa Maria Irrigation...

  5. Optically pumped isotopic ammonia laser system

    DOE Patents [OSTI]

    Buchwald, Melvin I. (Santa Fe, NM); Jones, Claude R. (Los Alamos, NM); Nelson, Leonard Y. (Seattle, WA)

    1982-01-01T23:59:59.000Z

    An optically pumped isotopic ammonia laser system which is capable of producing a plurality of frequencies in the middle infrared spectral region. Two optical pumping mechanisms are disclosed, i.e., pumping on R(J) and lasing on P(J) in response to enhancement of rotational cascade lasing including stimulated Raman effects, and, pumping on R(J) and lasing on P(J+2). The disclosed apparatus for optical pumping include a hole coupled cavity and a grating coupled cavity.

  6. Process Integration of Industrial Heat Pumps

    E-Print Network [OSTI]

    Priebe, S. J.; Chappell, R. N.

    PROCESS INTEGRATION OF INDUSTRIAL HEAT PUMPS* S. J. Priebe EG&G Idaho, Inc. Idaho Falls, Idaho ABSTRACT The integration of heat pumps into industrial processes shows potential for energy savings. Heat pumps must, however, be integrated... properly relative to the process pinch and the unit operations in the process. The shape of the grand composite curve, the type of heat ?pump drive, and the kind of heat pump cycle were examined to determine their effects on the placement of industrial...

  7. Supplement to Diagnosis and Management of Salinity Problems in Irrigated Pecan Production: Salt Leaching

    E-Print Network [OSTI]

    Miyamoto, S.

    (e. g., Hanson and Bendixen, 1995). The flow under drip irrigation is largely unsaturated flow, and the evaporation-driven salinity increase associated with high frequency sprinkler irrigation is minimal with drip systems. This method... of leaching irrigation depend largely upon the existing irrigation system, and the types of soils involved. Several items, however, should be kept in mind. We already mentioned that it is preferable to apply leaching irrigation during the dormant period...

  8. Management of Trickle Irrigated Orchards for Increased Water Use Efficiency

    E-Print Network [OSTI]

    Punthakey, J. F.; McFarland, M. J.; Rodrigue, P. B.; Worthington, J. W.

    of individual trees. Improved irrigation scheduling methods offer the potential for further savings in water and energy to pressurize the water since peach trees require less than a fully-watered state for production. This report describes research to determine...

  9. Installing a Subsurface Drip Irrigation System for Row Crops

    E-Print Network [OSTI]

    Enciso, Juan

    2004-09-07T23:59:59.000Z

    This publication describes the components of a subsurface drip irrigation system and the procedure for installing such a system. Each step is outlined and illustrated. Steps include tape injection, trenching, connecting drip lines, back...

  10. Economically Optimum Irrigation Patternsfor Grain Sorghum Production: Texas High Plains

    E-Print Network [OSTI]

    Zavaleta, L. R.; Lacewell, R. D.; Taylor, C. R.

    generated at every starting point for each of the production periods. If discrepancies between the expected and the realized values existed, then, based on current conditions a reevaluation of the control variable, irrigation water, was made and the decision...

  11. adequate irrigation management: Topics by E-print Network

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

    Lewis, David Carroll 1985-01-01 4 Guidelines for Developing Soil and Water Management Programs: Irrigated Pecans Texas A&M University - TxSpace Summary: The book...

  12. Outlook for Energy and Implications for Irrigated Agriculture

    E-Print Network [OSTI]

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

    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...

  13. Evaluation of pre-packaged agricultural drip irrigation kits

    E-Print Network [OSTI]

    Huang, Shen, S.B. Massachusetts Institute of Technology

    2012-01-01T23:59:59.000Z

    The purpose of this thesis is to conduct user testing and performance evaluation of two different agricultural pre-packaged drip irrigation kit (PDIK) systems: Chapin Bucket Kit and International Design Enterprises (IDE) ...

  14. Floating intake reduces pump damage

    SciTech Connect (OSTI)

    Kronig, A.

    1993-12-31T23:59:59.000Z

    The solution to a costly sand erosion problem at the Grande Dixence hydroelectric project in Switzerland turned out to be as simple as a floating pump. The 726-MW Grande Dixence project drains a 350-square-kilometer reach of the Zermatt and Herens valleys in the southwestern Swiss Alps. About half of the drainage area is covered by active glaciers. Because the glaciers in Zermatt Valley are so low in altitude, their water is collected in Z`mutt Reservoir at the base of the Matterhorn, then pumped up 500 meters for transport to the main Grande Disence Reservoir near Sion. The glacier water is heavily laden with sand. In spite of a gravel pass and a desilter, the 700,000-acubic-meter Z`mutt Reservoir receives large quantities of sand. The sand tends to remain in solution because of the low water temperatures (1 to 2 degrees Centigrade). In the original intake system, the sand would be sucked into the pump intakes, causing extensive erosion to the pump wheels and an expensive yearly program of repair. (Pump damage averaged 200,000 Swiss Francs ($284,000 U.S.) per year between 1980 and 1985.)

  15. Microelectromechanical pump utilizing porous silicon

    DOE Patents [OSTI]

    Lantz, Jeffrey W. (Albuquerque, NM); Stalford, Harold L. (Norman, OK)

    2011-07-19T23:59:59.000Z

    A microelectromechanical (MEM) pump is disclosed which includes a porous silicon region sandwiched between an inlet chamber and an outlet chamber. The porous silicon region is formed in a silicon substrate and contains a number of pores extending between the inlet and outlet chambers, with each pore having a cross-section dimension about equal to or smaller than a mean free path of a gas being pumped. A thermal gradient is provided along the length of each pore by a heat source which can be an electrical resistance heater or an integrated circuit (IC). A channel can be formed through the silicon substrate so that inlet and outlet ports can be formed on the same side of the substrate, or so that multiple MEM pumps can be connected in series to form a multi-stage MEM pump. The MEM pump has applications for use in gas-phase MEM chemical analysis systems, and can also be used for passive cooling of ICs.

  16. An Overview of Operational Characteristics of Selected Irrigation Districts in the Texas Lower Rio Grande Valley: Hidalgo County Irrigation District No. 2 (San Juan)

    E-Print Network [OSTI]

    Stubbs, Megan J.; Rister, M. Edward; Sturdivant, Allen W.; Lacewell, Ronald D.

    to both urban communities and agriculture (which includes most of the irrigation districts in the Lower Rio Grande Valley) brings forth more questions related to how each of these systems operate. Individual or groupings of irrigation districts..., infrastructure, adoptive rate of technology, etc. can vary significantly across irrigation districts. So, to completely understand and appreciate the collective Lower Rio Grande Valley irrigation district system, one must understand the idiosyncrasies...

  17. Diagnosis and Management of Salinity Problems In Irrigated Pecan Productions

    E-Print Network [OSTI]

    Miyamoto, S.

    field test conducted in a citrus orchard shows improved salt leaching under mulch. Table 3. The target leaching fraction (LF) to control soil salinity below 2.5 dS m -1 in the saturation extract. Irrig. Water salinity sandy clayey sandy clayey d.... Miyamoto Professor and Soil Scientist Texas A&M University Agricultural Research Center at El Paso Introduction Pecans, along with Almonds and Walnuts, are among the salt sensitive tree crops currently grown under irrigation. Yet, many...

  18. Guidelines for Developing Soil and Water Management Programs: Irrigated Pecans

    E-Print Network [OSTI]

    Miyamoto, S.

    Guidelines for Developing Soil and Water Management Programs: Irrigated Pecans Agricultural Research and Extension Center at El Paso March 2002 Texas Agricultural Experiment Station The Texas A&M University System Texas Water Resources Institute... by soil and water testing and appraisal, and evaluation of soil improvement options. Finally, orchard management practices, such as soil and irrigation management, fertilization and weed control should be fine- tuned. The significance of each measure may...

  19. Test, Evaluation, and Demonstration of Practical Devices/Systems to Reduce Aerodynamic Drag of Tractor/Semitrailer Combination Unit Trucks

    SciTech Connect (OSTI)

    Scott Smith; Karla Younessi; Matt Markstaller; Dan Schlesinger; Bhaskar Bhatnagar; Donald Smith; Bruno Banceu; Ron Schoon; V.K. Sharma; Mark Kachmarsky; Srikant Ghantae; Michael Sorrels; Conal Deedy; Justin Clark; Skip Yeakel; Michael D. Laughlin; Charlotte Seigler; Sidney Diamond

    2007-04-30T23:59:59.000Z

    Class 8 heavy-duty trucks account for over three-quarters of the total diesel fuel used by commercial trucks (trucks with GVWRs more than 10,000 pounds) in the United States each year. At the highway speeds at which these trucks travel (i.e., 60 mph or greater), aerodynamic drag is a major part of total horsepower needed to move the truck down the highway, Reductions in aerodynamic drag can yield measurable benefits in fuel economy through the use of relatively inexpensive and simple devices. The goal of this project was to examine a number of aerodynamic drag reduction devices and systems and determine their effectiveness in reducing aerodynamic drag of Class 8 tractor/semitrailer combination-units, thus contributing to DOE's goal of reducing transportation petroleum use. The project team included major heavy truck manufacturers in the United States, along with the management and industry expertise of the Truck Manufacturers Association as the lead investigative organization. The Truck Manufacturers Association (TMA) is the national trade association representing the major North American manufacturers of Class 6-8 trucks (GVWRs over 19,500 lbs). Four major truck manufacturers participated in this project with TMA: Freightliner LLC; International Truck and Engine Corporation; Mack Trucks Inc.; and Volvo Trucks North America, Inc. Together, these manufacturers represent over three-quarters of total Class 8 truck sales in the United States. These four manufacturers pursued complementary research efforts as part of this project. The project work was separated into two phases conducted over a two-year period. In Phase I, candidate aerodynamic devices and systems were screened to focus research and development attention on devices that offered the most potential. This was accomplished using full-size vehicle tests, scale model tests, and computational fluid dynamics analyses. In Phase II, the most promising devices were installed on full-size trucks and their effect on fuel economy was determined, either through on-road testing or full-size wind tunnel testing. All of the manufacturers worked with devices and systems that offer practical solutions to reduce aerodynamic drag, accounting for functionality, durability, cost effectiveness, reliability, and maintainability. The project team members and their roles and responsibilities are shown in Figure 2-1. Figure 2-2 shows the Phase I and II project schedules for all four projects and associated management activities.

  20. Control Strategies for Centrifugal Pumps with Variable Flow Rate...

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

    This tip sheet discusses control strategies for centrifugal pumps with variable flow rate requirements in pumping systems and includes installation considerations. PUMPING SYSTEMS...

  1. Pumped Storage Hydropower (Detailed Analysis to Demonstrate Value...

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

    Pumped Storage Hydropower (Detailed Analysis to Demonstrate Value)-Modeling and Analysis of Value of Advanced Pumped Storage Hydropower in the U.S. Pumped Storage Hydropower...

  2. Autonomous observations of the ocean biological carbon pump

    E-Print Network [OSTI]

    Bishop, James K.B.

    2009-01-01T23:59:59.000Z

    efficiency of biological pump in the global ocean. JournalOcean Biological Carbon Pump Carbon Flux Explorerocean’s “biological carbon pump” (Broecker and Peng, 1982;

  3. Reducing Life Cycle Cost By Energy Saving in Pump Systems

    E-Print Network [OSTI]

    Bower, J. R.

    efficiency. Pump users and manufacturers can make significant savings by attention to system design, pump specification, drivers, pump control, auxiliary services and refurbishment policy....

  4. ROC/RMOTC Hydraulic Pump Test Final Report

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

    never attained. 6. The pump was hydraulically deployed and retrieved successfully. 7. Corrosion andor erosion of the pump rod were found when the pump was inspected following...

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

    E-Print Network [OSTI]

    Franco, Victor

    2011-01-01T23:59:59.000Z

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

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

    E-Print Network [OSTI]

    Franco, Victor

    2011-01-01T23:59:59.000Z

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

  7. Variable delivery, fixed displacement pump

    DOE Patents [OSTI]

    Sommars, Mark F. (Sparland, IL)

    2001-01-01T23:59:59.000Z

    A variable delivery, fixed displacement pump comprises a plurality of pistons reciprocated within corresponding cylinders in a cylinder block. The pistons are reciprocated by rotation of a fixed angle swash plate connected to the pistons. The pistons and cylinders cooperate to define a plurality of fluid compression chambers each have a delivery outlet. A vent port is provided from each fluid compression chamber to vent fluid therefrom during at least a portion of the reciprocal stroke of the piston. Each piston and cylinder combination cooperates to close the associated vent port during another portion of the reciprocal stroke so that fluid is then pumped through the associated delivery outlet. The delivery rate of the pump is varied by adjusting the axial position of the swash plate relative to the cylinder block, which varies the duration of the piston stroke during which the vent port is closed.

  8. Piston-assisted charge pumping

    E-Print Network [OSTI]

    Kaur, D; Mourokh, L

    2015-01-01T23:59:59.000Z

    We examine charge transport through a system of three sites connected in series in the situation when an oscillating charged piston modulates the energy of the middle site. We show that with an appropriate set of parameters, charge can be transferred against an applied voltage. In this scenario, when the oscillating piston shifts away from the middle site, the energy of the site decreases and it is populated by a charge transferred from the lower energy site. On the other hand, when the piston returns to close proximity, the energy of the middle site increases and it is depopulated by the higher energy site. Thus through this process, the charge is pumped against the potential gradient. Our results can explain the process of proton pumping in one of the mitochondrial enzymes, Complex I. Moreover, this mechanism can be used for electron pumping in semiconductor nanostructures.

  9. Integration of heat pumps into industrial processes

    SciTech Connect (OSTI)

    Chappell, R.N. (USDOE, Washington, DC (USA)); Priebe, S.J. (EG and G Idaho, Inc., Idaho Falls, ID (USA))

    1989-01-01T23:59:59.000Z

    The Department of Energy and others have funded studies to assess the potential for energy savings using industrial heat pumps. The studies included classifications of heat pumps, economic evaluations, and placement of heat pumps in industrial processes. Pinch technology was used in the placement studies to determine the placement, size, and type of heat pumps for a given applications. There appears to be considerable scope for heat pumping in several industries, but, where maximum process energy savings are desired, it is important to consider heat pumping in the context of overall process integration. 19 refs., 15 figs.

  10. Peristaltic pumps work in nano scales

    E-Print Network [OSTI]

    Farnoush Farahpour; Mohammad Reza Ejtehadi

    2013-08-05T23:59:59.000Z

    A design for a pump is suggested which is based on well-known peristaltic pumps. In order to simply describe the operation of the proposed pump, an innovative interpretation of low Reynolds number swimmers is presented and thereafter a similar theoretical model would be suggested to quantify the behavior of the pumps. A coarse-grained molecular dynamic simulation is used to examine the theoretical predictions and measure the efficiency of the pump in nano scales. It is shown that this pump with a modest design is capable of being a good option for transport processes in nano scale.

  11. Potential for Photovoltaic Solar Installation in Non-Irrigated Corners of Center Pivot Irrigation Fields in the State of Colorado

    SciTech Connect (OSTI)

    Roberts, B.

    2011-07-01T23:59:59.000Z

    The State of Colorado expressed an interest in assessing the potential for photovoltaic (PV) solar installations on non-irrigated corners of center-pivot irrigation (CPI) fields throughout the state. Using aerial imagery and irrigated land data available from the Colorado Water Conservation Board, an assessment of potentially suitable sites was produced. Productivity estimates were calculated from that assessment. The total area of non-irrigated corners of CPI fields in Colorado was estimated to be 314,674 acres, which could yield 223,418 acres of installed PV panels assuming 71% coverage in triangular plots. The total potential annual electricity production for the state was estimated to be 56,821 gigawatt hours (GWH), with an average of 1.3 GWH per available plot.

  12. Pump for molten metal or other fluid

    DOE Patents [OSTI]

    Horton, James A. (Livermore, CA); Brown, Donald L. (Livermore, CA)

    1994-01-01T23:59:59.000Z

    A pump having no moving parts which can be used to pump high temperature molten metal or other fluids in a vacuum or low pressure environment, and a method for pumping such fluids. The pump combines elements of a bubble pump with a trap which isolates the vacuum or low pressure region from the gas used to create the bubbles. When used in a vacuum the trap prevents the pumping gas from escaping into the isolated region and thereby reducing the quality of the vacuum. The pump includes a channel in which a pumping gas is forced under pressure into a cavity where bubbles are formed. The cavity is in contact with a reservoir which contains the molten metal or other fluid which is to be pumped. The bubbles rise up into a column (or pump tube) carrying the fluid with them. At the top of the column is located a deflector which causes the bubbles to burst and the drops of pumped fluid to fall into a trap. The fluid accumulates in the trap, eventually forcing its way to an outlet. A roughing pump can be used to withdraw the pumping gas from the top of the column and assist with maintaining the vacuum or low pressure environment.

  13. Residential Air-Source Heat Pump Program

    Broader source: Energy.gov [DOE]

    Massachusetts offers rebates of up to $3,750 for the installation of high-efficiency, cold-climate air-source heat pumps (ASHPs) in residential buildings of one to four units. Heat pumps must be ...

  14. Compact and highly efficient laser pump cavity

    DOE Patents [OSTI]

    Chang, Jim J. (Dublin, CA); Bass, Isaac L. (Castro Valley, CA); Zapata, Luis E. (Livermore, CA)

    1999-01-01T23:59:59.000Z

    A new, compact, side-pumped laser pump cavity design which uses non-conventional optics for injection of laser-diode light into a laser pump chamber includes a plurality of elongated light concentration channels. In one embodiment, the light concentration channels are compound parabolic concentrators (CPC) which have very small exit apertures so that light will not escape from the pumping chamber and will be multiply reflected through the laser rod. This new design effectively traps the pump radiation inside the pump chamber that encloses the laser rod. It enables more uniform laser pumping and highly effective recycle of pump radiation, leading to significantly improved laser performance. This new design also effectively widens the acceptable radiation wavelength of the diodes, resulting in a more reliable laser performance with lower cost.

  15. Portland General Electric- Heat Pump Rebate Program

    Broader source: Energy.gov [DOE]

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

  16. Process Integration of Industrial Heat Pumps 

    E-Print Network [OSTI]

    Priebe, S. J.; Chappell, R. N.

    1986-01-01T23:59:59.000Z

    The integration of heat pumps into industrial processes shows potential for energy savings. Heat pumps must, however, be integrated properly relative to the process pinch and the unit operations in the process. The shape of the grand composite curve...

  17. Industrial Heat Pumps: Where and When 

    E-Print Network [OSTI]

    Ranade, S. M.; Chao, Y. T.

    1989-01-01T23:59:59.000Z

    A brief review of the types of industrial heat pumps is presented. General guidelines are provided for appropriate placement of industrial heat pumps. Industrial applications are used as examples to illustrate key points.

  18. Experimental Study of Multiphase Pump Wear

    E-Print Network [OSTI]

    Steck, Daniel D'Andrea

    2014-08-06T23:59:59.000Z

    The goal of this research is to better understand upstream Oil & Gas Electric Submersible Pump (ESP) reliability issues. The objective of this research is to determine how Liquid-Gas-Particulate (LGP) turbine pump wear differs from Liquid...

  19. Geothermal Heat Pumps | Department of Energy

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

    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...

  20. Electric field divertor plasma pump

    DOE Patents [OSTI]

    Schaffer, M.J.

    1994-10-04T23:59:59.000Z

    An electric field plasma pump includes a toroidal ring bias electrode positioned near the divertor strike point of a poloidal divertor of a tokamak, or similar plasma-confining apparatus. For optimum plasma pumping, the separatrix of the poloidal divertor contacts the ring electrode, which then also acts as a divertor plate. A plenum or other duct near the electrode includes an entrance aperture open to receive electrically-driven plasma. The electrode is insulated laterally with insulators, one of which is positioned opposite the electrode at the entrance aperture. An electric field E is established between the ring electrode and a vacuum vessel wall, with the polarity of the bias applied to the electrode being relative to the vessel wall selected such that the resultant electric field E interacts with the magnetic field B already existing in the tokamak to create an E [times] B/B[sup 2] drift velocity that drives plasma into the entrance aperture. The pumped plasma flow into the entrance aperture is insensitive to variations, intentional or otherwise, of the pump and divertor geometry. Pressure buildups in the plenum or duct connected to the entrance aperture in excess of 10 mtorr are achievable. 11 figs.

  1. Industrial Heat Pump Case Study

    E-Print Network [OSTI]

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

    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...

  2. Electric field divertor plasma pump

    DOE Patents [OSTI]

    Schaffer, Michael J. (San Diego, CA)

    1994-01-01T23:59:59.000Z

    An electric field plasma pump includes a toroidal ring bias electrode (56) positioned near the divertor strike point of a poloidal divertor of a tokamak (20), or similar plasma-confining apparatus. For optimum plasma pumping, the separatrix (40) of the poloidal divertor contacts the ring electrode (56), which then also acts as a divertor plate. A plenum (54) or other duct near the electrode (56) includes an entrance aperture open to receive electrically-driven plasma. The electrode (56) is insulated laterally with insulators (63,64), one of which (64) is positioned opposite the electrode at the entrance aperture. An electric field E is established between the ring electrode (56) and a vacuum vessel wall (22), with the polarity of the bias applied to the electrode being relative to the vessel wall selected such that the resultant electric field E interacts with the magnetic field B already existing in the tokamak to create an E.times.B/B.sup.2 drift velocity that drives plasma into the entrance aperture. The pumped plasma flow into the entrance aperture is insensitive to variations, intentional or otherwise, of the pump and divertor geometry. Pressure buildups in the plenum or duct connected to the entrance aperture in excess of 10 mtorr are achievable.

  3. Electrokinetically pumped high pressure sprays

    DOE Patents [OSTI]

    Schoeniger, Joseph S. (Oakland, CA); Paul, Phillip H. (Livermore, CA); Schoeniger, Luke (Pittsford, NY)

    2002-01-01T23:59:59.000Z

    An electrokinetic pump capable of producing high pressure is combined with a nozzle having a submicron orifice to provide a high pressure spray device. Because of its small size, the device can be contained within medical devices such as an endoscope for delivering biological materials such as DNA, chemo therapeutic agents, or vaccines to tissues and cells.

  4. Energy 101: Geothermal Heat Pumps

    ScienceCinema (OSTI)

    None

    2013-05-29T23:59:59.000Z

    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.

  5. Energy 101: Geothermal Heat Pumps

    SciTech Connect (OSTI)

    None

    2011-01-01T23:59:59.000Z

    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.

  6. Efficiency-A Pump Engineering Nemesis?

    E-Print Network [OSTI]

    McGuire, J. T.

    EFFICIENCY - A PUMP ENGINEERING NEMESIS? J. T. McGUIRE ENGINEERING MANAGER DRESSER PUMP DIVISION, DRESSER INDUSTRIES, INC. HARRISON, N. J. ABSTRACT Higher pump efficiency, a most worthy objective, is being pursued with increasing vigour... as energy costs rise. There are signs, however, that the pursuit occasionally loses its perspective. To try to eliminate these lapses, the paper restates the objective, looks at the importance of system design, then discusses pump efficiency and its...

  7. UBC Social Ecological Economic Development Studies (SEEDS) Student Report Benefits of Installing Additional Rain Sensors within the UBC Irrigation System

    E-Print Network [OSTI]

    Additional Rain Sensors within the UBC Irrigation System Michael Thiessen, Chelsie Drysdale University of Installing Additional Rain Sensors within the UBC Irrigation System A Business Case Analysis Prepared for: Dr................................................................................................................................................................... 5 DESCRIPTION OF CURRENT UBC IRRIGATION WATER USE

  8. PARAMETER ESTIMATION BASED MODELS OF WATER SOURCE HEAT PUMPS

    E-Print Network [OSTI]

    ......................................................................................................... 4 2.1. Heat Pump and Chiller Models

  9. Advanced Chemical Heat Pumps Using Liquid-Vapor Reactions 

    E-Print Network [OSTI]

    Kirol, L.

    1987-01-01T23:59:59.000Z

    Chemical heat pumps utilizing liquid-vapor reactions can be configured in forms analogous to electric drive vapor-compression heat pumps and heat activated absorption heat pumps. Basic thermodynamic considerations eliminate some heat pumps and place...

  10. Heat-Of-Reaction Chemical Heat Pumps--Possible Configurations 

    E-Print Network [OSTI]

    Kirol, L. D.

    1986-01-01T23:59:59.000Z

    Chemical heat pumps utilize working fluids which undergo reversible chemical changes. Mechanically driven reactive heat pump cycles or, alternatively, heat driven heat pumps in which either heat engine or heat pump working fluid is reactive...

  11. 3, 26212673, 2006 Biotic pump of

    E-Print Network [OSTI]

    Boyer, Edmond

    HESSD 3, 2621­2673, 2006 Biotic pump of atmospheric moisture A. M. Makarieva and V. G. Gorshkov System Sciences Biotic pump of atmospheric moisture as driver of the hydrological cycle on land A. M (elba@infopro.spb.su) 2621 #12;HESSD 3, 2621­2673, 2006 Biotic pump of atmospheric moisture A. M

  12. Insulin Pump Software Certification Yihai Chen1,

    E-Print Network [OSTI]

    Lawford, Mark

    Insulin Pump Software Certification Yihai Chen1, , Mark Lawford2, , Hao Wang2, , and Alan Wassyng2 for Software Certification McMaster University, Hamilton, Ontario, Canada Abstract. The insulin pump. Malfunction of the insulin pump will endanger the user's life. All countries impose some regula- tion

  13. Leviathan and the Air-Pump: Hobbes,

    E-Print Network [OSTI]

    Landweber, Laura

    Leviathan and the Air-Pump: Hobbes, Boyle, and the Experimental Life Steven Shapin and Simon, Robert Boyle built an air-pump to do exper- iments. Does the story of Roundheads and Restor- ation have on the debates between Boyle and his archcritic Thomas Hobbes over the air-pump, the authors proposed

  14. GEOTHERMAL HEAT PUMPS Jack DiEnna

    E-Print Network [OSTI]

    GEOTHERMAL HEAT PUMPS THE "PLAYBOOK" Jack DiEnna Executive Director The Geothermal National What do we call it... Geothermal, Ground Source, GeoExchange. The feds call it geothermal heat pumps IS GEOTHERMAL HEAT PUMP TECHNOLOGY ??? Answer: It is a 60 year old technology! #12;FACT GHP's were first written

  15. Efficiency-A Pump Engineering Nemesis? 

    E-Print Network [OSTI]

    McGuire, J. T.

    1987-01-01T23:59:59.000Z

    necessary to consider the pump's powe characteristic. An example is the easiest wa to illustrate the point. Figure 7 shows the head, power and effic ency characteristics for two pumps designed for 3500 GPM at 750 ft. total head. Pump A is two stage, ?as...

  16. Onsite Wastewater Treatment Systems: Pump Tank

    E-Print Network [OSTI]

    Lesikar, Bruce J.

    2008-10-23T23:59:59.000Z

    Pump tanks are concrete, fiberglass or polyethylene containers that collect wastewater to be dosed into the soil at intervals. This publication explains the design and maintenance of pump tanks, and it offers advice on what to do if a pump tank...

  17. DEVELOPMENT OF SOLAR DRIVEN ABSORPTION AIR CONDITIONERS AND HEAT PUMPS

    E-Print Network [OSTI]

    Dao, K.

    2013-01-01T23:59:59.000Z

    DRIVEN ABSORPTION AIR CONDITIONERS AND HEAT PUMPS K. Dao, M.ABSORPTION AIR CONDITIONERS AND HEAT PUMPS* K. DAO, M.

  18. Plant Water Use and Growth in Response to Soil Salinity in Irrigated Agriculture

    E-Print Network [OSTI]

    Runkle, Benjamin Reade

    2009-01-01T23:59:59.000Z

    Journal of Sustainable Agriculture, 27(1): 5-50. Feng, G. ,Salinity in Irrigated Agriculture by Benjamin Reade KrepsSalinity in Irrigated Agriculture by Benjamin Reade Kreps

  19. Flatness-Based Control of Open-Channel Flow in an Irrigation Canal Using SCADA

    E-Print Network [OSTI]

    Boyer, Edmond

    Flatness-Based Control of Open-Channel Flow in an Irrigation Canal Using SCADA Tarek Rabbani, Simon of an algorithm for real-time irrigation operations using a supervision, control, and data acquisition (SCADA

  20. Combined water use of turf and woody ornamentals in an irrigated South Texas landscape 

    E-Print Network [OSTI]

    Havlak, Roger Dale

    2004-01-01T23:59:59.000Z

    Landscape water conservation and potential evapotranspiration (PET or ET[p]) based irrigation programs are hindered by a lack of data on actual evapotranspiration (ET[a]) rates of multiple plant species landscapes. Irrigation coefficients...

  1. Root water extraction zones of irrigated cotton (Gossypium Hirsutum L.) in the Brazos Valley, Texas

    E-Print Network [OSTI]

    Chemelil, Mathew Chirchir

    1986-01-01T23:59:59.000Z

    'ith dry summers. More farmers are therefore increasing their number of hectares under irrigation to benefit from these large increases. Vt'ith increased irrigation of cotton in these counties, the Soil Conservation Service(SCS) embarked on a v...

  2. Optimization of Water Use Efficiency Through Trickle Irrigation and the Stress Day Index

    E-Print Network [OSTI]

    Wilke, O.C.; Hiler, E. A.

    Water deficits reduce plant growth and subsequently, crop yields. Man has relied upon irrigation to overcome these crop water deficiencies. But since the present supplies of water are limited, more efficient irrigation application methods must...

  3. The 1997 Irrigation Suspension Program for the Edwards Aquifer: Evaluation and Alternatives

    E-Print Network [OSTI]

    Keplinger, Keith O.; McCarl, Bruce A.

    (drought) Management Rules. The Aquifer region, however, experienced a wet Spring in 1997, so that even irrigators not enrolled in the program applied little or no irrigation water. If conditions were dry in Spring 1997, aquifer simulation results indicate...

  4. The 1997 Irrigation Suspension Program for the Edwards Aquifer: Evaluation and Alternatives 

    E-Print Network [OSTI]

    Keplinger, Keith O.; McCarl, Bruce A.

    1998-01-01T23:59:59.000Z

    (drought) Management Rules. The Aquifer region, however, experienced a wet Spring in 1997, so that even irrigators not enrolled in the program applied little or no irrigation water. If conditions were dry in Spring 1997, aquifer simulation results indicate...

  5. Geographic information system (GIS) and simulation model for management of irrigation districts

    E-Print Network [OSTI]

    Nazarov, Azimjon S.

    2000-01-01T23:59:59.000Z

    IDMM (Irrigation District Management Model), a user friendly, GIS based, menu driven personal computer software program, was developed as a planning and management tool for improved water use and crop growth production in irrigation districts...

  6. Infrastructure investment and policy management of water resources for small-scale irrigated agriculture

    E-Print Network [OSTI]

    Amornvivat, Sutapa, 1974-

    2003-01-01T23:59:59.000Z

    We investigate the options for enhancing the welfare of small farmers in Thailand through subsidies of irrigation infrastructure. Enhanced water storage and irrigation can significantly improve yield and the welfare of the ...

  7. Engine lubrication circuit including two pumps

    DOE Patents [OSTI]

    Lane, William H.

    2006-10-03T23:59:59.000Z

    A lubrication pump coupled to the engine is sized such that the it can supply the engine with a predetermined flow volume as soon as the engine reaches a peak torque engine speed. In engines that operate predominately at speeds above the peak torque engine speed, the lubrication pump is often producing lubrication fluid in excess of the predetermined flow volume that is bypassed back to a lubrication fluid source. This arguably results in wasted power. In order to more efficiently lubricate an engine, a lubrication circuit includes a lubrication pump and a variable delivery pump. The lubrication pump is operably coupled to the engine, and the variable delivery pump is in communication with a pump output controller that is operable to vary a lubrication fluid output from the variable delivery pump as a function of at least one of engine speed and lubrication flow volume or system pressure. Thus, the lubrication pump can be sized to produce the predetermined flow volume at a speed range at which the engine predominately operates while the variable delivery pump can supplement lubrication fluid delivery from the lubrication pump at engine speeds below the predominant engine speed range.

  8. Screw-fed pump system

    DOE Patents [OSTI]

    Sprouse, Kenneth M

    2014-11-25T23:59:59.000Z

    A pump system includes a pump that includes a first belt and a second belt that are spaced apart from each other to provide generally straight sides of a passage there between. There is an inlet at one end of the passage and an outlet at an opposite end of the passage, with a passage length that extends between the inlet and the outlet. The passage defines a gap distance in a width direction between the straight sides at the passage inlet. A hopper includes an interior space that terminates at a mouth at the passage inlet. At least one screw is located within the interior space of the hopper and includes a screw diameter in the width direction that is less than or equal to the gap distance.

  9. Energy and Water Use in Irrigated Agriculture During Drought Conditions

    E-Print Network [OSTI]

    Ritschard, R.L.

    2011-01-01T23:59:59.000Z

    is overdrafted from ground water storage basins. 3 In 1976supply, pumping from ground water storage reservoirs mayIn of ground formation which reduces the water storage

  10. Self-pumping impurity control

    DOE Patents [OSTI]

    Brooks, J.N.; Mattas, R.F.

    1983-12-21T23:59:59.000Z

    It is an object of the present invention to provide an apparatus for removing impurities from the plasma in a fusion reactor without an external vacuum pumping system. It is also an object of the present invention to provide an apparatus for removing the helium ash from a fusion reactor. It is another object of the present invention to provide an apparatus which removes helium ash and minimizes tritium recycling and inventory.

  11. Charge-pump voltage converter

    DOE Patents [OSTI]

    Brainard, John P. (Albuquerque, NM); Christenson, Todd R. (Albuquerque, NM)

    2009-11-03T23:59:59.000Z

    A charge-pump voltage converter for converting a low voltage provided by a low-voltage source to a higher voltage. Charge is inductively generated on a transfer rotor electrode during its transit past an inductor stator electrode and subsequently transferred by the rotating rotor to a collector stator electrode for storage or use. Repetition of the charge transfer process leads to a build-up of voltage on a charge-receiving device. Connection of multiple charge-pump voltage converters in series can generate higher voltages, and connection of multiple charge-pump voltage converters in parallel can generate higher currents. Microelectromechanical (MEMS) embodiments of this invention provide a small and compact high-voltage (several hundred V) voltage source starting with a few-V initial voltage source. The microscale size of many embodiments of this invention make it ideally suited for MEMS- and other micro-applications where integration of the voltage or charge source in a small package is highly desirable.

  12. Submersible canned motor transfer pump

    DOE Patents [OSTI]

    Guardiani, Richard F. (Ohio Township, Allegheny County, PA); Pollick, Richard D. (Sarver, PA); Nyilas, Charles P. (Monroeville, PA); Denmeade, Timothy J. (Lower Burrell, PA)

    1997-01-01T23:59:59.000Z

    A transfer pump used in a waste tank for transferring high-level radioactive liquid waste from a waste tank and having a column assembly, a canned electric motor means, and an impeller assembly with an upper impeller and a lower impeller connected to a shaft of a rotor assembly. The column assembly locates a motor housing with the electric motor means adjacent to the impeller assembly which creates an hydraulic head, and which forces the liquid waste, into the motor housing to cool the electric motor means and to cool and/or lubricate the radial and thrust bearing assemblies. Hard-on-hard bearing surfaces of the bearing assemblies and a ring assembly between the upper impeller and electric motor means grind large particles in the liquid waste flow. Slots in the static bearing member of the radial bearing assemblies further grind down the solid waste particles so that only particles smaller than the clearances in the system can pass therethrough, thereby resisting damage to and the interruption of the operation of the transfer pump. The column assembly is modular so that sections can be easily assembled, disassembled and/or removed. A second embodiment employs a stator jacket which provides an alternate means for cooling the electric motor means and lubricating and/or cooling the bearing assemblies, and a third embodiment employs a variable level suction device which allows liquid waste to be drawn into the transfer pump from varying and discrete levels in the waste tank.

  13. Requirements for Grain Sorghum Irrigation on the High Plains.

    E-Print Network [OSTI]

    Thaxton, E. L. Jr.; Swanson, Norris P.

    1956-01-01T23:59:59.000Z

    and Recommendations Irrigation research was conducted with grain sorghum on the optimum use of underground water ' resources at the Amarillo and Lubbock Experiment Stations and on off-station plots during the past several years. Highest returns in pounds of grain... per inch of water are received when 'brain sorghum is sup I plied with adequate moisture from planting to the soft dough stage. I High-moisture levels are the most profitable; if the irrigation water supply becomes inadequate, the acreage to which...

  14. Production Practices for Irrigated Crops on the High Plains.

    E-Print Network [OSTI]

    Bonnen, C. A.; McArthur, W. C.; Magee, A. C.; Hughes, W.F.

    1953-01-01T23:59:59.000Z

    was snapped and the re- mainder was machine-stripped. th lint yields averaging nearly a bale per acre (Table and 24.0 hours, respectively, of off-farm labor were cotton snapping on sandy and on heavy soils. From hour of labor was used to cover... approximately half rl acreage with a stripper. hough machine operations on dry-land and on irrigated CULLIJI~ are similar for seedbed preparation, planting and culti- vating, nearly twice as much labor was needed for production of the irrigated crop...

  15. Trickle irrigation in the Trans-Pecos area of Texas

    E-Print Network [OSTI]

    Doak, Louis E

    1988-01-01T23:59:59.000Z

    LETTER OF TRANSNITTAL Louis Doak Agricultural Engineer P. O. Box 1041 College Station, TX 77841 !409) 823-2758 This paper represents part of the work th conducted at the Texas Agricultural Experiment Paces. This study in no way xs meant..., as in Israel. the future of row crop production will be in the use c f trickle irrigation technology. u's Doak TRICKLE IRRIGATION IN THE TRANS-PECOS AREA OF TEXAS A PROFESSIONAL PAPER LOUIS E. DOAK Submitted to the College of Agriculture of Texas A...

  16. Neighbour balance in a strip-block design for an experiment on irrigation

    E-Print Network [OSTI]

    Bailey, R. A.

    Neighbour balance in a strip-block design for an experiment on irrigation R. A. Bailey (Joint work There are 8 blocks. 2/15 #12;Irrigation experiment on citrus plants in a greenhouse There are 8 blocks. Each block is (4 rows ) Ã? (4 columns )/(4 pots ). 2/15 #12;Irrigation experiment on citrus plants

  17. THE USE OF HYDRAULIC MODELS TO OPTIMIZE THE REHABILITATION OF AN OPEN CHANNEL IRRIGATION SYSTEM

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    THE USE OF HYDRAULIC MODELS TO OPTIMIZE THE REHABILITATION OF AN OPEN CHANNEL IRRIGATION SYSTEM of irrigation, as well as the type of control used for managing the system and has led to the use factors like diurnal irrigation or the significant storage capacity of the system, and would lead

  18. 3rd Quarter 2010 | 25(3) THE EFFECT OF IRRIGATION TECHNOLOGY ON GROUNDWATER USE

    E-Print Network [OSTI]

    Lin, C.-Y. Cynthia

    pivot irrigation systems to "dropped nozzle" or "low energy precision application (LEPA)" center pivot irrigation systems has occurred in western Kansas in recent years. The shift was aided by policies that subsidized the installation of more efficient irrigation systems in an effort to reduce the extraction

  19. September 23, 2009 Engineer: Aggie Irrigation Catch Can best in the world

    E-Print Network [OSTI]

    the accuracy of tests to measure the efficiency and application rates of irrigation systems," said Dr. Guy is simple, Fipps said. One simply puts out containers and runs the irrigation system for a specified amount by properly calibrating their systems, Fipps said. Also, reducing over-irrigation is vital to preserving

  20. Fall 2011 Course Syllabus Course number and title: CIVE 512 -Irrigation Systems Design

    E-Print Network [OSTI]

    Fall 2011 ­ Course Syllabus Course number and title: CIVE 512 - Irrigation Systems Design Credits: 3 Term(s) to be offered: Every Fall semester. Course Description: Irrigation systems principles and design procedures for sound design and operation of sprinkler, trickle, and surface irrigation systems

  1. Sustainable Water Practices at Pomona's Parks: Improving Irrigation Use and Stormwater Runoff Retention

    E-Print Network [OSTI]

    Young, Terence

    utilized as irrigation for these locations, it is critical to retrofit existing systems and implement newSustainable Water Practices at Pomona's Parks: Improving Irrigation Use and Stormwater Runoff be leading the way towards a sustainable future. However, this is not the case. Landscape irrigation

  2. Coordination in irrigation systems: An analysis of the Lansing-Kremer model of Bali

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    1 Coordination in irrigation systems: An analysis of the Lansing-Kremer model of Bali Marco A@indiana.edu Phone: 812 855 5178 Abstract Farmers within irrigation systems, such as those in Bali, solve complex, synchronization, agent-based model #12;2 1. Introduction The question of whether irrigation systems require

  3. Using Midday Stem Water Potential to Assess Irrigation Needs of Landscape

    E-Print Network [OSTI]

    Standiford, Richard B.

    systems, while avoiding the potential for root disease development due to over- irrigation. IntroductionUsing Midday Stem Water Potential to Assess Irrigation Needs of Landscape Valley Oaks1 Ken Shackel2 related to both irrigation regime and tree physiological responses to stress. A standard pressure chamber

  4. Residential Irrigation System Rainfall Shutoff Devices1 Michael D. Dukes and Dorota Z. Haman2

    E-Print Network [OSTI]

    Jawitz, James W.

    ABE325 Residential Irrigation System Rainfall Shutoff Devices1 Michael D. Dukes and Dorota Z. Haman--are designed to interrupt the cycle of an automatic irrigation system controller when a specific amount of rainfall has occurred. They are small devices wired to the irrigation system controller and mounted

  5. PANSY: a Portable Autonomous Irrigation System Benjamin Beckmann and Ajay Gupta

    E-Print Network [OSTI]

    Gupta, Ajay

    PANSY: a Portable Autonomous Irrigation System Benjamin Beckmann and Ajay Gupta Wireless Sensornet negatively to even the slightest of climatic changes. As such, an automated system of irrigation is ideal of pot bar codes. More specifically, PANSY provides a portable autonomous irrigation system. Experimental

  6. Introduction Irrigation is required for profitable commercial potato production in Idaho.

    E-Print Network [OSTI]

    O'Laughlin, Jay

    capacities. These conditions necessitate that reliable irrigation systems capable of light, frequent, uniform holding capacity, and (iii) a water supply and irrigation system that is capable of providing the needed1 Introduction Irrigation is required for profitable commercial potato production in Idaho. Maximum

  7. Evaluation of Turfgrass Species and Varieties for Drought Tolerance in a Renovated Linear Gradient Irrigation System

    E-Print Network [OSTI]

    Irrigation System Scientists: B. Wherley and A. Chandra - Texas AgriLife Research- Dallas, and J. Heitholt gradient irrigation system (LGIS) project were to 1) quantify the extent of water stress that different the implications of deficit irrigation practices on reflective heat load generation, and 3) determine how cultural

  8. UNL Extension Continues Helping Farmers Learn Irrigation Strategies to use Less Water

    E-Print Network [OSTI]

    Nebraska-Lincoln, University of

    water. Thus, over the years, a large portion of the area has had irrigation systems developed. Today. Some of the sites were equipped with line-source sprinkler systems to demonstrate irrigation strategies occurred during the pollination and grain filling stages. #12;A line-source irrigation system is a set

  9. SUBSURFACE DRIP IRRIGATION SYSTEMS FOR SPECIALTY CROP PRODUCTION IN NORTH DAKOTA

    E-Print Network [OSTI]

    Steele, Dean D.

    SUBSURFACE DRIP IRRIGATION SYSTEMS FOR SPECIALTY CROP PRODUCTION IN NORTH DAKOTA D.D.Steele, R.G.Greenland, B. L. Gregor ABSTRACT. Subsurface drip irrigation (SDI) systems offer advantages over other types of irrigation systems for specialty crop production, including water savings, improved trafficability

  10. Modeling the large-scale water balance impact of different irrigation systems

    E-Print Network [OSTI]

    Evans, Jason

    Modeling the large-scale water balance impact of different irrigation systems J. P. Evans1 and B. F precipitation causes the Turkish government to invest in modernizing its own irrigation systems balance impact of different irrigation systems, Water Resour. Res., 44, W08448, doi:10.1029/2007WR006671

  11. Groundwater depletion and sustainability of irrigation in the US High Plains and Central Valley

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Groundwater depletion and sustainability of irrigation in the US High Plains and Central Valley impact crop produc- tion in the United States because 60% of irrigation relies on groundwater. Groundwater depletion in the irrigated High Plains and California Central Valley accounts for 50

  12. Empirical evidence for a recent slowdown in irrigation-induced cooling

    SciTech Connect (OSTI)

    Bonfils, C; Lobell, D

    2007-01-19T23:59:59.000Z

    Understanding the influence of past land use changes on climate is needed to improve regional projections of future climate change and inform debates about the tradeoffs associated with land use decisions. The effects of rapid expansion of irrigated area in the 20th century has remained unclear relative to other land use changes, such as urbanization, that affected a similar total land area. Using spatial and temporal variations in temperature and irrigation extent observed in California, we show that irrigation expansion has had a large cooling effect on summertime average daily daytime temperatures (-0.15 to -0.25 C.decade{sup -1}), which corresponds to a cooling estimated at -2.0 - -3.3 C since the introduction of irrigation practice. Irrigation has negligible effects on nighttime temperatures, leading to a net cooling effect of irrigation on climate (-0.06 to -0.19 C.decade{sup -1}). Stabilization of irrigated area has occurred in California since 1980 and is expected in the near future for most irrigated regions. The suppression of past human-induced greenhouse warming by increased irrigation is therefore likely to slow in the future, and a potential decrease in irrigation may even contribute to a more rapid warming. Changes in irrigation alone are not expected to influence broadscale temperatures, but they may introduce large uncertainties in climate projections for irrigated agricultural regions, which provide roughly 40% of global food production.

  13. Get Pumped about Pumped Storage | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaefer To: CongestionDevelopment of a downhole wireline toolDepartmentGet Pumped

  14. The ABCs of pump selection for mine dewatering

    SciTech Connect (OSTI)

    Morgan, S.E.

    2008-10-15T23:59:59.000Z

    Choosing the right type of pump for removing water from mine operations can provide significant benefits in overall performance and cost of operation. The article describes the types of pump most commonly used: vertical turbine pumps, electric and hydraulic submersible pumps, horizontal multistage centrifugal pumps and horizontal single-stage centrifugal pumps. It gives points to consider when selecting a suitable pump, including solids handling capacity and acid content, portability, automatic operation, easy maintenance and parts availability. 1 photo.

  15. Evaluation of Smart Irrigation Controllers: Year 2010 Results

    E-Print Network [OSTI]

    Swanson, Charles; Fipps, Guy

    2011-12-19T23:59:59.000Z

    A smart controller testing facility was established by the Irrigation Technology Center at Texas A&M University in College Station in 2008 in order to evaluate their performance from an “enduser” point of view. The “end-user” is considered...

  16. Opportunities for Demand Response in California Agricultural Irrigation: A

    E-Print Network [OSTI]

    LBNL-6108E Opportunities for Demand Response in California Agricultural Irrigation: A Scoping Study was sponsored in part by the Demand Response Research Center which is funded by the California .................................. 2 Best Opportunities for Demand Response and Permanent Load Shifting Programs.............. 3

  17. RESOLUTION NO. 2011-82 ADOPTING MODESTO IRRIGATION DISTRICT'S RENEWABLE

    E-Print Network [OSTI]

    RESOLUTION NO. 2011-82 ADOPTING MODESTO IRRIGATION DISTRICT'S RENEWABLE ENERGY RESOURCES Standard (RPS) in an effort to meet 20 percent ofits retail energy sales with renewable resources by 2017 for consideration by the Board of Directors, attached hereto as Attachment A, Renewable Energy Resources Enforcement

  18. Economically Optimum Irrigation Patternsfor Grain Sorghum Production: Texas High Plains 

    E-Print Network [OSTI]

    Zavaleta, L. R.; Lacewell, R. D.; Taylor, C. R.

    1979-01-01T23:59:59.000Z

    was relaxed to consider the case where the climatic environment was unknown. As in the deterministic case, the optimal amounts of irrigation water, by period. It was also observed, that with the open-loop feedback control, the results obtained for yields did...

  19. IRRIGATION OPTIMIZATION BY MODELING OF PLANT-SOIL INTERACTION

    E-Print Network [OSTI]

    Boyer, Edmond

    - action model is used to simulate the structural-functional plant growth conditioned by water status approach of dynamic programming is used. KEY WORDS Irrigation scheduling, plant-soil model, water stress]). In the coupling approach, we simulate the soil water balance by PILOTE to get the water stress index. Plant

  20. Sustainability of irrigated agriculture in the San Joaquin Valley, California

    E-Print Network [OSTI]

    Vrugt, Jasper A.

    productivity and sustainability. Currently, there is a good understanding of the fundamental soil hydrological scale and at the long term, so that the sustainability of alternative management strategies canSustainability of irrigated agriculture in the San Joaquin Valley, California Gerrit Schoups* , Jan

  1. Engaging Irrigation Organizations in Water Reallocation Ronald C. Griffin*

    E-Print Network [OSTI]

    Griffin, Ronald

    promise to rise in response to climate change and energy costs.3 Cost-effective production of the rightEngaging Irrigation Organizations in Water Reallocation Ronald C. Griffin* Texas A&M University Blvd., 211C Texas A&M University College Station, TX 77843-2124 979-777-4434 Abstract: Rising water

  2. Evaluation of irrigation management procedures for geothermal effluent

    SciTech Connect (OSTI)

    Brockway, C.E.; Robbins, C.W.; Robison, C.W.; Johnson, G.S.

    1984-06-01T23:59:59.000Z

    An investigation was conducted to determine the feasibility of geothermal power plant effluent disposal by surface irrigation and the resulting impact on the shallow aquifer. The study was conducted at the Raft River Experimental Geothermal Power Plant site near Malta, Idaho and at the Snake River Conservation Research Center with soils and effluent obtained from the geothermal power plant site.

  3. JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING / SEPTEMBER/OCTOBER 2001 / 287 DESIGN OF MINIMUM SEEPAGE LOSS CANAL SECTIONS WITH

    E-Print Network [OSTI]

    Chahar, B. R.

    conveyance systems for deliv- ering water for irrigation. The seepage loss from irrigation canals constitutesJOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING / SEPTEMBER/OCTOBER 2001 / 287 DESIGN OF MINIMUM other factors [International Commission on Irrigation and Drainage (ICID) (1967)]. Analytical solutions

  4. UBC Social Ecological Economic Development Studies (SEEDS) Student Report An Investigation into New SUB Rooftop Garden Irrigations Systems

    E-Print Network [OSTI]

    SUB Rooftop Garden Irrigations Systems Peter Chow Banda Logawa Michael Chang University of British;1 An Investigation Into Rooftop Garden Irrigation Systems Prepared By: Peter Chow Banda Logawa Michael Chang #12 irrigation system in the new SUB at UBC. They included drip tape, soaker hose and sprinkler irrigation

  5. Transport and Dissipation in Quantum Pumps

    E-Print Network [OSTI]

    J. E. Avron; A. Elgart; G. M. Graf; L. Sadun

    2003-05-23T23:59:59.000Z

    This paper is about adiabatic transport in quantum pumps. The notion of ``energy shift'', a self-adjoint operator dual to the Wigner time delay, plays a role in our approach: It determines the current, the dissipation, the noise and the entropy currents in quantum pumps. We discuss the geometric and topological content of adiabatic transport and show that the mechanism of Thouless and Niu for quantized transport via Chern numbers cannot be realized in quantum pumps where Chern numbers necessarily vanish.

  6. Heat Pump Application- An Industrial Case Study

    E-Print Network [OSTI]

    Shukla, D.; Umoh, R.

    of additional compressor work required to lift thermal energy from a low source temperature to a high sink temperature. A reduction of this work improves the heat pump economics. This paper presents the results of a heat pump study conducted by TENSA... technology and by making some process modifications, the compressor work can be reduced significantly. INTRODUCTION Heat pumps, used in conjunction with conventional heat exchangers networks (HEN) provide an effective means for reducing the energy...

  7. Pumping characteristics of chopped sorghum slurries

    E-Print Network [OSTI]

    Ou, Shichuan

    1986-01-01T23:59:59.000Z

    than for water. 15 Staley et al. (1971) initiated a series of on-site pumping tests to assess the validity of published results using short pipe length to longer runs and studied the influence of dilution on pressure drops and pumping... Losses in Pipe Fittings Static Head 20 22 23 Total System Head 23 III DESIGN OF THE PUMP TESTING SYSTEM Main System Components 25 25 vii TABLE OF CONTENTS (CONTINUED) CHAPTER Page Storage Tank Hydraulic Motor Flow Control Valve Volumetric...

  8. Submersible canned motor transfer pump

    DOE Patents [OSTI]

    Guardiani, R.F.; Pollick, R.D.; Nyilas, C.P.; Denmeade, T.J.

    1997-08-19T23:59:59.000Z

    A transfer pump is described which is used in a waste tank for transferring high-level radioactive liquid waste from a waste tank and having a column assembly, a canned electric motor means, and an impeller assembly with an upper impeller and a lower impeller connected to a shaft of a rotor assembly. The column assembly locates a motor housing with the electric motor means adjacent to the impeller assembly which creates an hydraulic head, and which forces the liquid waste, into the motor housing to cool the electric motor means and to cool and/or lubricate the radial and thrust bearing assemblies. Hard-on-hard bearing surfaces of the bearing assemblies and a ring assembly between the upper impeller and electric motor means grind large particles in the liquid waste flow. Slots in the static bearing member of the radial bearing assemblies further grind down the solid waste particles so that only particles smaller than the clearances in the system can pass there through, thereby resisting damage to and the interruption of the operation of the transfer pump. The column assembly is modular so that sections can be easily assembled, disassembled and/or removed. A second embodiment employs a stator jacket which provides an alternate means for cooling the electric motor means and lubricating and/or cooling the bearing assemblies, and a third embodiment employs a variable level suction device which allows liquid waste to be drawn into the transfer pump from varying and discrete levels in the waste tank. 17 figs.

  9. Absorption-heat-pump system

    DOE Patents [OSTI]

    Grossman, G.; Perez-Blanco, H.

    1983-06-16T23:59:59.000Z

    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.

  10. Multiple discharge cylindrical pump collector

    DOE Patents [OSTI]

    Dunn, Charlton (Calabasas, CA); Bremner, Robert J. (Woodland Hills, CA); Meng, Sen Y. (Reseda, CA)

    1989-01-01T23:59:59.000Z

    A space-saving discharge collector 40 for the rotary pump 28 of a pool-type nuclear reactor 10. An annular collector 50 is located radially outboard for an impeller 44. The annular collector 50 as a closed outer periphery 52 for collecting the fluid from the impeller 44 and producing a uniform circumferential flow of the fluid. Turning means comprising a plurality of individual passageways 54 are located in an axial position relative to the annular collector 50 for receiving the fluid from the annular collector 50 and turning it into a substantially axial direction.

  11. Heat Pumps | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem NotEnergy,ARMFormsGasReleaseSpeechesHallNot Logged3 HanfordHarry S.Heat Pumps Heat

  12. Pump Systems Optimization: Energy Efficiency

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014, an OHASeptember 2010 |ofDepartment ofPart| Department ofPump Systems

  13. Pump Systems | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014, an OHASeptember 2010 |ofDepartment ofPart| Department ofPump

  14. Pumped Hydro | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I GeothermalPotentialBiopowerSolidGenerationMethod Jump to:ThisPublic PowerKentucky: EnergyPulte JumpPumped

  15. Multiple moving wall dry coal extrusion pump

    DOE Patents [OSTI]

    Fitzsimmons, Mark Andrew

    2013-05-14T23:59:59.000Z

    A pump for transporting particulate material includes a passageway defined on each side between an inlet and an outlet by a moving wall.

  16. Geometry, Statistics and Asymptotics of Quantum Pumps

    E-Print Network [OSTI]

    J. E. Avron; A. Elgart; G. M. Graf; L. Sadun

    2000-05-31T23:59:59.000Z

    We give a pedestrian interpretation of a formula of Buttiker et. al. (BPT) relating the adiabatically pumped current to the S matrix and its (time) derivatives. We relate the charge in BPT to Berry's phase and the corresponding Brouwer pumping formula to curvature. As applications we derive explicit formulas for the joint probability density of pumping and conductance when the S matrix is uniformly distributed; and derive a new formula that describes hard pumping when the S matrix is periodic in the driving parameters.

  17. Optimization Online - Boosting the Feasibility Pump

    E-Print Network [OSTI]

    Natashia L. Boland

    2012-01-22T23:59:59.000Z

    Jan 22, 2012 ... Boosting the Feasibility Pump. Natashia L. Boland(natashia.boland ***at*** newcastle.edu.au) Andrew C. Eberhard(andy.eb ***at*** ...

  18. Residential Geothermal Heat Pump Retrofit Webinar

    Broader source: Energy.gov [DOE]

    A webinar by National Renewable Energy Laboratory Senior Engineer Erin Anderson about geothermal heat pump (GHP) technology options, applications, and installation costs for residences.

  19. Method and system for small scale pumping

    DOE Patents [OSTI]

    Insepov, Zeke (Darien, IL); Hassanein, Ahmed (Bolingbrook, IL)

    2010-01-26T23:59:59.000Z

    The present invention relates generally to the field of small scale pumping and, more specifically, to a method and system for very small scale pumping media through microtubes. One preferred embodiment of the invention generally comprises: method for small scale pumping, comprising the following steps: providing one or more media; providing one or more microtubes, the one or more tubes having a first end and a second end, wherein said first end of one or more tubes is in contact with the media; and creating surface waves on the tubes, wherein at least a portion of the media is pumped through the tube.

  20. 6: A Second Pumping Theorem The pumping theorem we saw previously was

    E-Print Network [OSTI]

    Golin, Mordecai J.

    6: A Second Pumping Theorem The pumping theorem we saw previously was: Theorem 1 Let L â?? 0: We can also prove a stronger pumping theorem (Ex. 2.6.4): Theorem 2 Let M = (K; \\Sigma; ffi; s; F. jxyj Ÿ jKj: 3. y 6= e: 4. 8n â?? 0; xy n z 2 L(M ) This second pumping theorem permits us to prove

  1. MERIT Pump/Probe Data OutlineOutline

    E-Print Network [OSTI]

    McDonald, Kirk

    MERIT Pump/Probe Data Analysis OutlineOutline The pump/probe program Particle detector response correction Pump/probe analysis results NFMCC Collaboration Meeting , LBNL, January 26, 2009 Ilias Efthymiopoulos - CERN #12;The pump/probe program #12;The pump/probe program Use of the CERN PS flexibility

  2. Optical pumping magnetic resonance in high magnetic fields: Characterization of nuclear relaxation during pumping

    E-Print Network [OSTI]

    Augustine, Mathew P.

    Optical pumping magnetic resonance in high magnetic fields: Characterization of nuclear relaxation during pumping Matthew P. Augustine and Kurt W. Zilm Department of Chemistry, Yale University, New Haven exchange with optically pumped Rb vapor is investigated in high magnetic field. Operation in a high field

  3. Submersible canned motor mixer pump

    DOE Patents [OSTI]

    Guardiani, R.F.; Pollick, R.D.

    1997-10-07T23:59:59.000Z

    A mixer pump is described used in a waste tank for mobilizing high-level radioactive liquid waste having a column assembly containing power cables, a motor housing with electric motor means which includes a stator can of a stator assembly and a rotor can of a rotor assembly, and an impeller assembly with an impeller connected to a shaft of the rotor assembly. The column assembly locates the motor housing with the electric motor means adjacent to the impeller which creates an hydraulic head, and which forces the liquid waste into the motor housing to cool the electric motor means and to lubricate radial and thrust bearing assemblies. Hard-on-hard bearing surfaces of the bearing assemblies and a ring assembly between the impeller and electric motor means act to grind down large particles in the liquid waste flow. These larger particles are received in slots in the static bearing members of the radial bearing assemblies. Only solid waste particles smaller than the clearances in the system can pass there through, thereby resisting damage to and the interruption of the operation of the mixer pump. 10 figs.

  4. Submersible canned motor mixer pump

    DOE Patents [OSTI]

    Guardiani, Richard F. (Ohio Township, PA); Pollick, Richard D. (Sarver, PA)

    1997-01-01T23:59:59.000Z

    A mixer pump used in a waste tank for mobilizing high-level radioactive liquid waste having a column assembly containing power cables, a motor housing with electric motor means which includes a stator can of a stator assembly and a rotor can of a rotor assembly, and an impeller assembly with an impeller connected to a shaft of the rotor assembly. The column assembly locates the motor housing with the electric motor means adjacent to the impeller which creates an hydraulic head, and which forces the liquid waste into the motor housing to cool the electric motor means and to lubricate radial and thrust bearing assemblies. Hard-on-hard bearing surfaces of the bearing assemblies and a ring assembly between the impeller and electric motor means act to grind down large particles in the liquid waste flow. These larger particles are received in slots in the static bearing members of the radial bearing assemblies. Only solid waste particles smaller than the clearances in the system can pass therethrough, thereby resisting damage to and the interruption of the operation of the mixer pump.

  5. An improved theory for regenerative pump performance

    E-Print Network [OSTI]

    Kim, Yong Jung

    , impeller angles, CFD 1 INTRODUCTION Regenerative flow pumps and compressors have found many applications displa- cement machines such as root blowers, but without problems of lubrication and wear. In addition flow pump/compressor (RFP and RFC) is applied as a gas compressor there is a further advantage

  6. Industrial Heat Pumps--Types and Costs 

    E-Print Network [OSTI]

    Chappell, R. N.; Bliem, C. J.; Mills, J. I.; Demuth, O. J.; Plaster, D. S.

    1985-01-01T23:59:59.000Z

    this categorization, the cost of recovering waste energy with heat pumps was examined. Examples were evaluated in which the cost of energy delivered was calculated based on estimates of capital cost, operating costs, and maintenance costs. Heat pumps from the various...

  7. Spare mitigation/retrieval mixer pumps

    SciTech Connect (OSTI)

    Taylor, S.

    1995-02-02T23:59:59.000Z

    This document presents the functional design criteria for design, analysis, fabrication, testing, and installation of a waste tank mixer pump. The mixer pump will be operated to eliminate the periodic releases of large quantities of flammable gas (e.g., hydrogen) from Hanford Site waste tanks and also to accommodate retrieval of tank waste.

  8. Optical Pumping : Experiment and Theory Revisited

    E-Print Network [OSTI]

    Zotin K. -H. Chu

    2008-12-31T23:59:59.000Z

    The objective of this paper is to share our enthusiasm for optical pumping experiments and to encourage their use in researches on practical physics. The experimental technique has been well developed and the apparatus sophisticated, but, by paying attention to a few details, reliable operation can be repeated. Some theoretical principles for optical pumping are also introduced and they can be demonstrated experimentally.

  9. Quantum pumping and dissipation in closed systems

    E-Print Network [OSTI]

    Cohen, Doron

    , Shiren (PRB 1986) - Using Kubo for a closed ring Wilkinson, Austin (JPA 1995) - Challenging the validity, ) regimes diagram DC (PRB+Rapid 2003) - the Kubo approach to pumping DC, Kottos, Schanz (cond-mat) - pumping - experiments Shutenko, Aleiner, Altshuler (PRB 2000) - quantization? Entin-Wohlman, Aharony, Levinson (2002

  10. Human Health Science Building Geothermal Heat Pumps

    Broader source: Energy.gov [DOE]

    Project objectives: Construct a ground sourced heat pump, heating, ventilation, and air conditioning system for the new Oakland University Human Health Sciences Building utilizing variable refrigerant flow (VRF) heat pumps. A pair of dedicated outdoor air supply units will utilize a thermally regenerated desiccant dehumidification section. A large solar thermal system along with a natural gas backup boiler will provide the thermal regeneration energy.

  11. Groundwater pumping and spatial externalities in agriculture

    E-Print Network [OSTI]

    Lin, C.-Y. Cynthia

    Groundwater pumping and spatial externalities in agriculture Lisa Pfeiffer and C.-Y. Cynthia Lin are potentially important causes of welfare loss. Using a unique spatial data set of groundwater users in western Kansas, we are able to empirically measure the physical and behavioral effects of groundwater pumping

  12. Heat Pump for High School Heat Recovery

    E-Print Network [OSTI]

    Huang, K.; Wang, H.; Zhou, X.

    2006-01-01T23:59:59.000Z

    ) [3] Yayun FAN. Experimental study on a heat pump technology in solar thermal utilization[J]. Acta Energiae Solaris Sinica, Oct.,2002; Vol.23,No.5 ? 581-585.(In Chinese) [4] Nengxi JIANG. Air-conditioning Heat Pump Technology and Its Applications...

  13. Engineering microbial biofuel tolerance and export using efflux pumps

    E-Print Network [OSTI]

    Dunlop, Mary

    2012-01-01T23:59:59.000Z

    biofuel production. Two pumps consistently survived thethe native E. coli pump Molecular Systems Biology 2011 3biofuel tolerance using ef?ux pumps MJ Dunlop et al A A.

  14. Ultrafast pump-probe force microscopy with nanoscale resolution

    E-Print Network [OSTI]

    2015-01-01T23:59:59.000Z

    Cerullo, “Confocal ultrafast pump-probe spectroscopy: A newand H. J. Maris, “Time-resolved pump-probe experiments withand U. Keller, “Femtosecond pump-porbe near-field optical

  15. DEVELOPMENT OF SOLAR DRIVEN ABSORPTION AIR CONDITIONERS AND HEAT PUMPS

    E-Print Network [OSTI]

    Dao, K.

    2013-01-01T23:59:59.000Z

    AIR CONDITIONERS AND HEAT PUMPS K. Dao, M. Wahlig, E. Wali,are liquid paths. DM: multistage pump driver, driven by highvapor. DW: main circulation pump driven by strong absorbent.

  16. An Analysis of Efficiency Improvements in Residential Sized Heat Pumps 

    E-Print Network [OSTI]

    O'Neal, D. L.; Boecker, C. L.; Murphy, W. E.; Notman, J. R.

    1986-01-01T23:59:59.000Z

    The objectives of this study included: (1) development of classes of heat pumps, (2) evaluation and selection of a suitable heat pump design model, (3) characterization of suitable baseline heat pump designs, (4) selection of design options that can...

  17. White County REMC- Residential Geothermal Heat Pump Rebate Program

    Broader source: Energy.gov [DOE]

    White County REMC offers incentives for the purchase and installation of energy efficient heat pumps. Air-source heat pumps are eligible for a rebate of $300, while geothermal heat pumps are...

  18. MODELING, VERIFICATION AND OPTIMIZATION OF HYBRID GROUND SOURCE HEAT PUMP

    E-Print Network [OSTI]

    MODELING, VERIFICATION AND OPTIMIZATION OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS IN ENERGYPLUS, VERIFICATION AND OPTIMIZATION OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS IN ENERGYPLUS Thesis Approved by: Dr.................................................................................................................... 16 MODELING OF HYBRID GROUND SOURCE HEAT PUMP SYSTEMS IN ENERGYPLUS

  19. Fluid inertia consideration in sucker rod pump diagnosis

    E-Print Network [OSTI]

    Csaszar, Albert Bela

    1993-01-01T23:59:59.000Z

    petroleum assets. Diagnostic models have been developed to determine the working condition of down hole pumps in rod pump operations. Several methods have been used with good success to interpret surface measurements in order to diagnose and monitor pump...

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

    E-Print Network [OSTI]

    Franco, Victor

    2011-01-01T23:59:59.000Z

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

  1. air heat pumps: Topics by E-print Network

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

    Heat Pump Texas A&M University - TxSpace Summary: In a double stage-coupling heat pump, comprising an air source and water loop heat pump, the 1320 ? low temperature water...

  2. air source heat pumps: Topics by E-print Network

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

    Heat Pump Texas A&M University - TxSpace Summary: In a double stage-coupling heat pump, comprising an air source and water loop heat pump, the 1320 ? low temperature water...

  3. air heat pump: Topics by E-print Network

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

    Summary: In a double stage-coupling heat pump, comprising an air source and water loop heat pump, the 1320 ? low temperature water is supplied to the water loop heat pump unit....

  4. Preventative maintenance plan for emergency pumping trailers

    SciTech Connect (OSTI)

    Wiggins, D.D.

    1994-09-01T23:59:59.000Z

    The purpose/goal of this document is to identify the maintenance requirements and resources available to properly maintain the readiness and condition of the Emergency Pumping Equipment controlled by the Tank Waste Remediation System Tank Farms Plant Engineering and Tank Stabilization Operations. This equipment is intended to pump a single-shell tank (SST) that has been identified as an assumed leaking tank. The goal is to commence pumping (submersible or jet) as soon as safely possible after identifying a SST as an assumed leaking tank. Important information pertaining to the Emergency Pumping Equipment, Over-Ground Piping installation, and procedures is found in WHC-SD-WM-AP-005, ``Single Shell Tank Leak Emergency Pumping Guide.``

  5. D-Zero HVAC Heat Pump Controls

    SciTech Connect (OSTI)

    Markley, Dan; /Fermilab

    2004-04-14T23:59:59.000Z

    This engineering note documents the integration of Dzero Heat Pump 1 through Heat Pump 15 into the cryo/gas process control system commonly referred to as the cryo control system. Heat pumps 1 through 15 control the ambient air temperature on the 3rd, 5th, and 6th floor office areas at Dzero. The entire Johnson HVAC control system was replaced with a Siemens control system in 1999 leaving behind the 15 heat pumps with stand-alone Johnson controllers. Now, these 15 heat pump Johnson controllers are being replaced with small stand alone Beckhoff BC9000 controllers. The Beckhoff BC9000 controllers are network able into the existing Intellution control system. The Beckhoff BC9000 controllers use the cryo private Ethernet network and an OPC driver to get data into the Intellution SCADA node databases. The BC9000 is also programmed over this same Ethernet network.

  6. Split driveshaft pump for hazardous fluids

    DOE Patents [OSTI]

    Evans, II, Thomas P. (Aiken, SC); Purohit, Jwalit J. (Evans, GA); Fazio, John M. (Orchard Park, NY)

    1995-01-01T23:59:59.000Z

    A pump having a split driveshaft for use in pumping hazardous fluids wherein only one driveshaft becomes contaminated by the fluid while the second remains isolated from the fluid. The pump has a first portion and a second portion. The first portion contains a pump motor, the first driveshaft, a support pedestal, and vapor barriers and seals. The second portion contains a second, self-lubricating driveshaft and an impeller. The first and second driveshafts are connected together by a releasable coupling. A shield and a slinger deployed below the coupling prevent fluid from the second portion from reaching the first portion. In operation, only the second assembly comes into contact with the fluid being pumped, so the risk of contamination of the first portion by the hazardous fluid is reduced. The first assembly can be removed for repairs or routine maintenance by decoupling the first and second driveshafts and disconnecting the motor from the casing.

  7. Geothermal heat pump grouting materials

    SciTech Connect (OSTI)

    Allan, M.

    1998-08-01T23:59:59.000Z

    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.

  8. aortic balloon pump: Topics by E-print Network

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

    pump riser elbow cracking. Based on these documents, recent field experience, and guidelines developed by the BWR Vessel and Internals Project (BWRVIP), jet pump inspections are...

  9. absorption heat pumps: Topics by E-print Network

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

    Heating capacity k jet nozzle Closed Cycles: AbsorptionAdsorption heat pump thermal compressor driven by waste heat1 Industrial heat pumps in Germany - potentials,...

  10. absorption heat pump: Topics by E-print Network

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

    Heating capacity k jet nozzle Closed Cycles: AbsorptionAdsorption heat pump thermal compressor driven by waste heat1 Industrial heat pumps in Germany - potentials,...

  11. New concave penalty functions for improving the Feasibility Pump

    E-Print Network [OSTI]

    2010-07-01T23:59:59.000Z

    The Feasibility pump is a heuristic for finding feasible solutions to mixed ... In this work, we propose a new feasibility pump approach using concave non-.

  12. Using the analytic center in the feasibility pump

    E-Print Network [OSTI]

    2010-10-04T23:59:59.000Z

    The feasibility pump (FP) [5, 7] has proved to be a successful heuristic for ... a new heuristic approach to compute MILP solutions, named the feasibility pump.

  13. TVA Partner Utilities- Energy Right Heat Pump Program

    Broader source: Energy.gov [DOE]

    The Tennessee Valley Authority (TVA) energy right Heat Pump Plan provides financing to promote the installation of high efficiency heat pumps in homes and small businesses. Installation,...

  14. TVA Partner Utilities- Energy Right Heat Pump Program

    Broader source: Energy.gov [DOE]

    The Tennessee Valley Authority (TVA) ''energy right'' Heat Pump Plan provides financing to promote the installation of high efficiency heat pumps in homes and small businesses. Installation,...

  15. Natural Refrigerant High-Performance Heat Pump for Commercial...

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

    Natural Refrigerant High-Performance Heat Pump for Commercial Applications Natural Refrigerant High-Performance Heat Pump for Commercial Applications Lead Performer: S-RAM -...

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

    Energy Savers [EERE]

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

  17. Advanced Variable Speed Air-Source Integrated Heat Pump 2013...

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

    Pump 2013 Peer Review Advanced Variable Speed Air-Source Integrated Heat Pump 2013 Peer Review Emerging Technologies Project for the 2013 Building Technologies Office's Program...

  18. Residential Cold Climate Heat Pump with Variable-Speed Technology...

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

    Cold Climate Heat Pump with Variable-Speed Technology Residential Cold Climate Heat Pump with Variable-Speed Technology Purdue prototype system Purdue prototype system Unico...

  19. Data Analysis from Ground Source Heat Pump Demonstration Projects...

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

    Analysis from Ground Source Heat Pump Demonstration Projects Data Analysis from Ground Source Heat Pump Demonstration Projects Comparison of building energy use before and after...

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

    E-Print Network [OSTI]

    Franco, Victor

    2011-01-01T23:59:59.000Z

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

  1. Energy Conservation Program: Test Procedure for Pumps, Notice...

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

    Conservation Program: Test Procedure for Pumps, Notice of Proposed Rulemaking Energy Conservation Program: Test Procedure for Pumps, Notice of Proposed Rulemaking This document is...

  2. Develop Standard Method of Test for Integrated Heat Pump - 2013...

    Energy Savers [EERE]

    Develop Standard Method of Test for Integrated Heat Pump - 2013 Peer Review Develop Standard Method of Test for Integrated Heat Pump - 2013 Peer Review Emerging Technologies...

  3. advanced heat pumps: Topics by E-print Network

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

    12;Canada's Context for Heat Pumps Impacts avenues: Ground source heat pumps for cold climates (heating and cooling) Reversible air source heat Oak Ridge National Laboratory...

  4. advanced heat pump: Topics by E-print Network

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

    12;Canada's Context for Heat Pumps Impacts avenues: Ground source heat pumps for cold climates (heating and cooling) Reversible air source heat Oak Ridge National Laboratory...

  5. agency heat pump: Topics by E-print Network

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

    12;Canada's Context for Heat Pumps Impacts avenues: Ground source heat pumps for cold climates (heating and cooling) Reversible air source heat Oak Ridge National Laboratory...

  6. automotive heat pump: Topics by E-print Network

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

    12;Canada's Context for Heat Pumps Impacts avenues: Ground source heat pumps for cold climates (heating and cooling) Reversible air source heat Oak Ridge National Laboratory...

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

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

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

  8. Variable Speed Pumping: A Guide to Successful Applications -...

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

    Variable Speed Pumping: A Guide to Successful Applications - Executive Summary Variable Speed Pumping: A Guide to Successful Applications - Executive Summary This document...

  9. Improving Pumping System Performance: A Sourcebook for Industry...

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

    Pumping System Performance: A Sourcebook for Industry - Second Edition Improving Pumping System Performance: A Sourcebook for Industry - Second Edition This sourcebook is designed...

  10. Flathead Electric Cooperative Facility Geothermal Heat Pump System...

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

    Flathead Electric Cooperative Facility Geothermal Heat Pump System Upgrade Flathead Electric Cooperative Facility Geothermal Heat Pump System Upgrade Project Will Take Advantage of...

  11. Flathead Electric Cooperative Facility Geothermal Heat Pump System...

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

    Flathead Electric Cooperative Facility Geothermal Heat Pump System Upgrade CHERYL TALLEY, PE Flathead Electric Cooperative Ground Source Heat Pumps Demonstration Projects May 19,...

  12. Economic Methodology for South Texas Irrigation Projects - RGIDECON

    E-Print Network [OSTI]

    Ellis, John R.; Robinson, John R.C.; Sturdivant, Allen W.; Lacewell, Ronald D.; Rister, M. Edward

    Methodology October 31, 2002 page 10 of 28 free component for time preference, a risk premium, and an inflation premium3 (Rister et al. 1999). The relationship between these three components is considered multiplicative (Leatham; Hamilton), i.e., the overall...TR-203 October 2002 Economic Methodology for South Texas Irrigation Projects – RGIDECON© M. Edward Rister Ronald D. Lacewell John R. C. Robinson John R. Ellis Allen W. Sturdivant Department of Agricultural Economics Texas Agricultural Experiment...

  13. Evaluation of Smart Irrigation Controllers: Year 2011 Results

    E-Print Network [OSTI]

    Fipps, G.; Swanson, C.

    and Extension Specialist, Biological and 2 Agricultural Engineering, 2117 TAMU, College Station, TX 77843-2117; http://itc.tamu.edu SUMMARY A smart controller testing facility was established by the Irrigation Technology Center at Texas A&M University... this water balance. The parameters most commonly used include: ? ET (actual plant evapotranspiration) ? Rainfall ? Site properties (soil texture, root zone depth, water holding capacity) ? MAD (managed allowable depletion) The IA SWAT committee has...

  14. 7-117 The claim of a heat pump designer regarding the COP of the heat pump is to be evaluated. Assumptions The heat pump operates steadily.

    E-Print Network [OSTI]

    Bahrami, Majid

    7-47 7-117 The claim of a heat pump designer regarding the COP of the heat pump is to be evaluated. Assumptions The heat pump operates steadily. HP Wnet,in QH QL TL TH Analysis The maximum heat pump coefficient of performance would occur if the heat pump were completely reversible, 5.7 K026K300 K300 COP maxHP, LH H TT

  15. Monitoring DNAPL pumping using integrated geophysical techniques

    SciTech Connect (OSTI)

    Newmark, R.L.

    1997-01-01T23:59:59.000Z

    The removal of DNAPL during pumping was monitored. At Hill AFB in Utah, a free-product DNAPL plume (predominantly TCE, with some TCA, PCE, methylene chloride) is pooled in water-wet soil on a thick clay aquitard. Groundwater pumping at Operable Unit 2 began in 1994; to date, nearly 30,000 gal DNAPL have been recovered. From Sept. 1994 through Sept. 1995, changes in the basin during DNAPL pumping were monitored using fiber optic chemical sensors, neutron logs, and electrical resistance tomography (ERT). The first two sensor types verify the presence of DNAPL in vicinity of 3 boreholes which form a cross section from the perimeter of the basin to its center. Cross borehole ERT images the changes in formation electrical properties due to removal of DNAPL, extending the understanding of DNAPL removal between the boreholes. During pumping, electrical resistivities decreased; we suggest these decreases are directly caused by the reduction in DNAPL. During ground water pumping, water with relatively low resistivity replaces some of the DNAPL pockets as the highly insulating DNAPL is removed. Results suggest that, as DNAPL is pumped from a nearby well, product slowly drains along the top of an aquitard and into the pump well, where it collects.

  16. Diode pumped alkali vapor fiber laser

    DOE Patents [OSTI]

    Payne, Stephen A. (Castro Valley, CA); Beach, Raymond J. (Livermore, CA); Dawson, Jay W. (Livermore, CA); Krupke, William F. (Pleasanton, CA)

    2007-10-23T23:59:59.000Z

    A method and apparatus is provided for producing near-diffraction-limited laser light, or amplifying near-diffraction-limited light, in diode pumped alkali vapor photonic-band-gap fiber lasers or amplifiers. Laser light is both substantially generated and propagated in an alkali gas instead of a solid, allowing the nonlinear and damage limitations of conventional solid core fibers to be circumvented. Alkali vapor is introduced into the center hole of a photonic-band-gap fiber, which can then be pumped with light from a pump laser and operated as an oscillator with a seed beam, or can be configured as an amplifier.

  17. Pump station for radioactive waste water

    DOE Patents [OSTI]

    Whitton, John P.; Klos, Dean M.; Carrara, Danny T.; Minno, John J.

    2003-11-18T23:59:59.000Z

    A pump station for transferring radioactive particle containing waste water, includes: (a.) an enclosed sump having a vertically elongated right frusto conical wall surface and a bottom surface and (b.) a submersible volute centrifugal pump having a horizontally rotating impeller and a volute exterior surface. The sump interior surface, the bottom surface and the volute exterior surface are made of stainless steel having a 30 Ra or finer surface finish. A 15 Ra finish has been found to be most cost effective. The pump station is used for transferring waste water, without accumulation of radioactive fines.

  18. Canned pump having a high inertia flywheel

    DOE Patents [OSTI]

    Veronesi, L.; Raimondi, A.A.

    1989-12-12T23:59:59.000Z

    A canned pump is described which includes a motor, impeller, shaft, and high inertia flywheel mounted within a hermetically sealed casing. The flywheel comprises a heavy metal disk made preferably of a uranium alloy with a stainless steel shell sealably enclosing the heavy metal. The outside surfaces of the stainless steel comprise thrust runners and a journal for mating with, respectively, thrust bearing shoes and radial bearing segments. The bearings prevent vibration of the pump and, simultaneously, minimize power losses normally associated with the flywheel resulting from frictionally pumping surrounding fluid. 5 figs.

  19. Canned pump having a high inertia flywheel

    DOE Patents [OSTI]

    Veronesi, Luciano (O'Hara Twp., Allegheny County, PA); Raimondi, ALbert A. (Monroeville Borough, Allegheny County, PA)

    1989-01-01T23:59:59.000Z

    A canned pump is described which includes a motor, impeller, shaft, and high inertia flywheel mounted within a hermetically sealed casing. The flywheel comprises a heavy metal disk made preferably of a uranium alloy with a stainless steel shell sealably enclosing the heavy metal. The outside surfaces of the stainless steel comprise thrust runners and a journal for mating with, respectively, thrust bearing shoes and radial bearing segments. The bearings prevent vibration of the pump and, simultaneously, minimize power losses normally associated with the flywheel resulting from frictionally pumping surrounding fluid.

  20. Diode pumped alkali vapor fiber laser

    DOE Patents [OSTI]

    Payne, Stephen A. (Castro Valley, CA); Beach, Raymond J. (Livermore, CA); Dawson, Jay W. (Livermore, CA); Krupke, William F. (Pleasanton, CA)

    2006-07-26T23:59:59.000Z

    A method and apparatus is provided for producing near-diffraction-limited laser light, or amplifying near-diffraction-limited light, in diode pumped alkali vapor photonic-band-gap fiber lasers or amplifiers. Laser light is both substantially generated and propagated in an alkali gas instead of a solid, allowing the nonlinear and damage limitations of conventional solid core fibers to be circumvented. Alkali vapor is introduced into the center hole of a photonic-band-gap fiber, which can then be pumped with light from a pump laser and operated as an oscillator with a seed beam, or can be configured as an amplifier.

  1. Exploding conducting film laser pumping apparatus

    DOE Patents [OSTI]

    Ware, Kenneth D. (San Diego, CA); Jones, Claude R. (Los Alamos, NM)

    1986-01-01T23:59:59.000Z

    Exploding conducting film laser optical pumping apparatus. The 342-nm molecular iodine and the 1.315-.mu.m atomic iodine lasers have been optically pumped by intense light from exploding-metal-film discharges. Brightness temperatures for the exploding-film discharges were approximately 25,000 K. Although lower output energies were achieved for such discharges when compared to exploding-wire techniques, the larger surface area and smaller inductance inherent in the exploding-film should lead to improved efficiency for optically-pumped gas lasers.

  2. Design and development of the planetary pump

    E-Print Network [OSTI]

    Mao, Tchong Chin

    1973-01-01T23:59:59.000Z

    DESIGN AND DEVELOPMENT OF THE PLANETARY PUMP A Thes1s by TCHONG CHIN MAO Subm1tted to the Graduate College of Texas MM University fn partial fulf1llment of the requirement for the degree of MASTER OF SCIENCE August 1973 Major Subject...: Agricul tural Eng1neering DESIGN AND DEVELOPMENT OF THE PLANETARY PUMP A Thesis by TCHONG CHIN MAO Approved as to style and content by: airman of Coam ttee ea of epartment Member August 1973 ABSTRACT Design and Development of the Planetary Pump...

  3. Expansion of Urban Area in Irrigation Districts of the Rio Grande River Basin, 1996 - 2006: A Map Series 

    E-Print Network [OSTI]

    Leigh, Eric; Barroso, M.; Fipps, G.

    2009-01-01T23:59:59.000Z

    ?County?Water?Control?&?Improvement?District?No.1? Maverick? Presidio?County?Water?Improvement?District?No.1? Presidio? Santa?Cruz?Irrigation?District?No.15? Santa?Cruz? Santa?Maria?Irrigation?District?Cameron?County?No.4? Santa?Maria? United?Irrigation?District?of?Hidalgo?County? United? Valley...?County?Water?Control?&?Improvement?District?No.1? 134,900? Presidio?County?Water?Improvement?District?No.1? 2,780? Santa?Cruz?Irrigation?District?No.15? 75,080? Santa?Maria?Irrigation?District?Cameron?County?No.4? 10,183? United?Irrigation?District?of?Hidalgo?County? 57,374? Valley...

  4. Expansion of Urban Area in Irrigation Districts of the Rio Grande River Basin, 1996 - 2006: A Map Series

    E-Print Network [OSTI]

    Leigh, Eric; Barroso, M.; Fipps, G.

    ?County?Water?Control?&?Improvement?District?No.1? Maverick? Presidio?County?Water?Improvement?District?No.1? Presidio? Santa?Cruz?Irrigation?District?No.15? Santa?Cruz? Santa?Maria?Irrigation?District?Cameron?County?No.4? Santa?Maria? United?Irrigation?District?of?Hidalgo?County? United? Valley...?County?Water?Control?&?Improvement?District?No.1? 134,900? Presidio?County?Water?Improvement?District?No.1? 2,780? Santa?Cruz?Irrigation?District?No.15? 75,080? Santa?Maria?Irrigation?District?Cameron?County?No.4? 10,183? United?Irrigation?District?of?Hidalgo?County? 57,374? Valley...

  5. A Receding Horizon Control Algorithm for Adaptive Management of Soil Moisture and Chemical Levels during Irrigation

    E-Print Network [OSTI]

    Park, Yeonjeong; Shamma, Jeff; Harmon, Thomas C

    2009-01-01T23:59:59.000Z

    Hence, management schemes arrived at in this work cannot bework, the RHC algorithm is applied to the problem of irrigation with reclaimed water. The management

  6. Novel Growth Substrates and Smart Irrigation Strategies to Reduce Water Consumption of

    E-Print Network [OSTI]

    Fay, Noah

    Novel Growth Substrates and Smart Irrigation Strategies to Reduce Water Consumption of Arizona and transducer) 2 Load cells Flow meter Solenoid valve #12;Experiment Measurements Datalogger, collected every

  7. Changes in Investment and Irrigation Water Costs, Texas High Plains, 1950-54.

    E-Print Network [OSTI]

    Magee, A. C.; Hughes, William F.

    1956-01-01T23:59:59.000Z

    * Changes in Investment and Irrigation Water Costs, * Texas High Plains, 1950 - 54 OKLAHOMA I I DEAF SMITH . RANDALL ARM- DONLEI COLLINGS- I , STRONG i i 'I The principal irrigated cotton production area of the High Plains is the shaded... no improvement in irrigation facilities during 1950-54. Additional capital investment on farms making improvements in irrigation-facilities averaged $7,600 in the sandy-land area, $5,664 in the heavy-land area and $6,642 for all farms surveyed. The average cost...

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

    E-Print Network [OSTI]

    Mukherjee, Monobina

    2013-01-01T23:59:59.000Z

    2647-2668. Surface and Groundwater. 2012. U.S. EnvironmentalEstimating the Value of Groundwater in Irrigation, SelectedAgricultural adaptation to groundwater and climate. NBER

  9. Ultra-high speed vacuum pump system with first stage turbofan and second stage turbomolecular pump

    DOE Patents [OSTI]

    Jostlein, Hans

    2006-04-04T23:59:59.000Z

    An ultra-high speed vacuum pump evacuation system includes a first stage ultra-high speed turbofan and a second stage conventional turbomolecular pump. The turbofan is either connected in series to a chamber to be evacuated, or is optionally disposed entirely within the chamber. The turbofan employs large diameter rotor blades operating at high linear blade velocity to impart an ultra-high pumping speed to a fluid. The second stage turbomolecular pump is fluidly connected downstream from the first stage turbofan. In operation, the first stage turbofan operates in a pre-existing vacuum, with the fluid asserting only small axial forces upon the rotor blades. The turbofan imparts a velocity to fluid particles towards an outlet at a high volume rate, but moderate compression ratio. The second stage conventional turbomolecular pump then compresses the fluid to pressures for evacuation by a roughing pump.

  10. Solid state radiative heat pump

    DOE Patents [OSTI]

    Berdahl, P.H.

    1984-09-28T23:59:59.000Z

    A solid state radiative heat pump operable at room temperature (300 K) utilizes a semiconductor having a gap energy in the range of 0.03-0.25 eV and operated reversibly to produce an excess or deficit of change carriers as compared equilibrium. In one form of the invention an infrared semiconductor photodiode is used, with forward or reverse bias, to emit an excess or deficit of infrared radiation. In another form of the invention, a homogenous semiconductor is subjected to orthogonal magnetic and electric fields to emit an excess or deficit of infrared radiation. Three methods of enhancing transmission of radiation the active surface of the semiconductor are disclosed. In one method, an anti-refection layer is coated into the active surface of the semiconductor, the anti-reflection layer having an index of refraction equal to the square root of that of the semiconductor. In the second method, a passive layer is speaced trom the active surface of the semiconductor by a submicron vacuum gap, the passive layer having an index of refractive equal to that of the semiconductor. In the third method, a coupler with a paraboloid reflecting surface surface is in contact with the active surface of the semiconductor, the coupler having an index of refraction about the same as that of the semiconductor.

  11. Solid state radiative heat pump

    DOE Patents [OSTI]

    Berdahl, Paul H. (Oakland, CA)

    1986-01-01T23:59:59.000Z

    A solid state radiative heat pump (10, 50, 70) operable at room temperature (300.degree. K.) utilizes a semiconductor having a gap energy in the range of 0.03-0.25 eV and operated reversibly to produce an excess or deficit of charge carriers as compared to thermal equilibrium. In one form of the invention (10, 70) an infrared semiconductor photodiode (21, 71) is used, with forward or reverse bias, to emit an excess or deficit of infrared radiation. In another form of the invention (50), a homogeneous semiconductor (51) is subjected to orthogonal magnetic and electric fields to emit an excess or deficit of infrared radiation. Three methods of enhancing transmission of radiation through the active surface of the semiconductor are disclosed. In one method, an anti-reflection layer (19) is coated into the active surface (13) of the semiconductor (11), the anti-reflection layer (19) having an index of refraction equal to the square root of that of the semiconductor (11). In the second method, a passive layer (75) is spaced from the active surface (73) of the semiconductor (71) by a submicron vacuum gap, the passive layer having an index of refractive equal to that of the semiconductor. In the third method, a coupler (91) with a paraboloid reflecting surface (92) is in contact with the active surface (13, 53) of the semiconductor (11, 51), the coupler having an index of refraction about the same as that of the semiconductor.

  12. Screening Pumping Systems for Energy Savings Opportunities

    E-Print Network [OSTI]

    Casada, D.

    In most industrial settings, energy consumed by pumping systems is responsible for a major part of the overall electricity bill. In some cases, the energy is used quite efficiently; in others, it is not. Facility operators may be very familiar...

  13. Anomalous Topological Pumps and Fractional Josephson Effects

    E-Print Network [OSTI]

    Fan Zhang; C. L. Kane

    2013-10-20T23:59:59.000Z

    We discover novel topological pumps in the Josephson effects for superconductors. The phase difference, which is odd under the chiral symmetry defined by the product of time-reversal and particle-hole symmetries, acts as an anomalous adiabatic parameter. These pumping cycles are different from those in the "periodic table", and are characterized by $Z\\times Z$ or $Z_2\\times Z_2$ strong invariants. We determine the general classifications in class AIII, and those in class DIII with a single anomalous parameter. For the $Z_2\\times Z_2$ topological pump in class DIII, one $Z_2$ invariant describes the coincidence of fermion parity and spin pumps whereas the other one reflects the non-Abelian statistics of Majorana Kramers pairs, leading to three distinct fractional Josephson effects.

  14. Water and Space Heating Heat Pumps 

    E-Print Network [OSTI]

    Kessler, A. F.

    1985-01-01T23:59:59.000Z

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

  15. Heat Pump Application- An Industrial Case Study 

    E-Print Network [OSTI]

    Shukla, D.; Umoh, R.

    1990-01-01T23:59:59.000Z

    The economics of heat pumping across a distillation column is usually dependent on the amount of additional compressor work required to lift thermal energy from a low source temperature to a high sink temperature. A reduction of this work improves...

  16. Absorption Heat Pumping- Have You Tried It? 

    E-Print Network [OSTI]

    Davis, R. C.

    1985-01-01T23:59:59.000Z

    The concept of a thermal powered absorption heat pump is not a new or revolutionary idea. It has been successfully demonstrated in the lab and prototypes have been installed in the field. Units have been successfully applied in a number...

  17. State Regulatory Oversight of Geothermal Heat Pump

    E-Print Network [OSTI]

    State Regulatory Oversight of Geothermal Heat Pump Installa:ons: 2012 & 2009 Kevin McCray, Execu:ve Director #12;2009 #12;Sponsors ·The Geothermal Hea requested geothermal hea:ng and cooling regulatory data. · An email containing

  18. Geothermal Heat Pump Tax Credit (Corporate)

    Broader source: Energy.gov [DOE]

    [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...

  19. Electrospray emitters For diffusion vacuum pumps

    E-Print Network [OSTI]

    Diaz Gómez Maqueo, Pablo (Pablo Ly)

    2011-01-01T23:59:59.000Z

    Following similar principles as regular diffusion vacuum pumps, an electrospray emitter is set to produce a jet of charged particles that will drag air molecules out of a volume. To be a feasible concept, the emitted ...

  20. Edmond Electric- Residential Heat Pump Rebate Program

    Broader source: Energy.gov [DOE]

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

  1. Geothermal Heat Pump Tax Credit (Personal)

    Broader source: Energy.gov [DOE]

    [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...

  2. Marshfield Utilities- Heat Pump Rebate Program

    Broader source: Energy.gov [DOE]

    Marshfield Utilities offers cash-back rewards for Ground Source Heat Pumps, as well as Focus on Energy program incentives. A rebate of $550 will be given to customers who purchase and install...

  3. Heat Pump for High School Heat Recovery 

    E-Print Network [OSTI]

    Huang, K.; Wang, H.; Zhou, X.

    2006-01-01T23:59:59.000Z

    The heat pump system used for recycling and reusing waste heat in s high school bathroom was minutely analyzed in its coefficient of performance, onetime utilization ratio of energy, economic property and so on. The results showed that this system...

  4. Water and Space Heating Heat Pumps

    E-Print Network [OSTI]

    Kessler, A. F.

    1985-01-01T23:59:59.000Z

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

  5. Mass spectrometer vacuum housing and pumping system

    DOE Patents [OSTI]

    Coutts, Gerald W. (Livermore, CA); Bushman, John F. (Oakley, CA); Alger, Terry W. (Tracy, CA)

    1996-01-01T23:59:59.000Z

    A vacuum housing and pumping system for a portable gas chromatograph/mass spectrometer (GC/MS). The vacuum housing section of the system has minimum weight for portability while designed and constructed to utilize metal gasket sealed stainless steel to be compatible with high vacuum operation. The vacuum pumping section of the system consists of a sorption (getter) pump to remove atmospheric leakage and outgassing contaminants as well as the gas chromatograph carrier gas (hydrogen) and an ion pump to remove the argon from atmospheric leaks. The overall GC/MS system has broad application to contaminants, hazardous materials, illegal drugs, pollution monitoring, etc., as well as for use by chemical weapon treaty verification teams, due to the light weight and portability thereof.

  6. Rotordynamics of Twin-Screw Pumps

    E-Print Network [OSTI]

    Aboel Hassan Muhammed, Ameen

    2013-02-26T23:59:59.000Z

    Twin-screw pumps are positive displacement machines. Two meshing screws connected by timing gears convey the fluid trapped in the screw chambers axially from suction to discharge and force it out against the back pressure. Because of the screw...

  7. Topological pumping over a photonic Fibonacci quasicrystal

    E-Print Network [OSTI]

    Verbin, Mor

    Quasiperiodic lattices have recently been shown to be a nontrivial topological phase of matter. Charge pumping—one of the hallmarks of topological states of matter—was recently realized for photons in a one-dimensional ...

  8. Microcomputer Analysis of Pumping System Performance

    E-Print Network [OSTI]

    Bierschenk, J. L.; Schmidt, P. S.

    With today’s emphasis on efficient use and conservation of energy, selecting the correct pump for a given application requires not only a concise performance evaluation but also detailed economic analysis. A microcomputer program entitled PUMPCALC...

  9. Submersible pumping system with heat transfer mechanism

    DOE Patents [OSTI]

    Hunt, Daniel Francis Alan; Prenger, F. Coyne; Hill, Dallas D; Jankowski, Todd Andrew

    2014-04-15T23:59:59.000Z

    A submersible pumping system for downhole use in extracting fluids containing hydrocarbons from a well. In one embodiment, the pumping system comprises a rotary induction motor, a motor casing, one or more pump stages, and a cooling system. The rotary induction motor rotates a shaft about a longitudinal axis of rotation. The motor casing houses the rotary induction motor such that the rotary induction motor is held in fluid isolation from the fluid being extracted. The pump stages are attached to the shaft outside of the motor casing, and are configured to impart fluid being extracted from the well with an increased pressure. The cooling system is disposed at least partially within the motor casing, and transfers heat generated by operation of the rotary induction motor out of the motor casing.

  10. Mass spectrometer vacuum housing and pumping system

    SciTech Connect (OSTI)

    Coutts, G.W.; Bushman, J.F.; Alger, T.W.

    1996-07-23T23:59:59.000Z

    A vacuum housing and pumping system is described for a portable gas chromatograph/mass spectrometer (GC/MS). The vacuum housing section of the system has minimum weight for portability while designed and constructed to utilize metal gasket sealed stainless steel to be compatible with high vacuum operation. The vacuum pumping section of the system consists of a sorption (getter) pump to remove atmospheric leakage and outgassing contaminants as well as the gas chromatograph carrier gas (hydrogen) and an ion pump to remove the argon from atmospheric leaks. The overall GC/MS system has broad application to contaminants, hazardous materials, illegal drugs, pollution monitoring, etc., as well as for use by chemical weapon treaty verification teams, due to the light weight and portability thereof. 7 figs.

  11. Absorption Heat Pumping- Have You Tried It?

    E-Print Network [OSTI]

    Davis, R. C.

    The concept of a thermal powered absorption heat pump is not a new or revolutionary idea. It has been successfully demonstrated in the lab and prototypes have been installed in the field. Units have been successfully applied in a number...

  12. CRYOPUMP MEASUREMENTS RELATING TO SAFETY, PUMPING SPEED, AND RADIATION OUTGASSING

    E-Print Network [OSTI]

    Graham, W.G.

    2011-01-01T23:59:59.000Z

    Fast Gas Pulse Typical Data for Dynamic Pumping Speed Measurements with Deuterium Plan View of Reactor

  13. SP100i Syringe Pump WORLD PRECISION INSTRUMENTS 15

    E-Print Network [OSTI]

    Kleinfeld, David

    SP100i Syringe Pump WORLD PRECISION INSTRUMENTS 15 INSTRUCTION MANUAL Serial No._____________________ 8/94 World Precision Instruments, Inc. SP100i Syringe Pump Digital Infusion Syringe Pump #12;SP100i Syringe Pump WORLD PRECISION INSTRUMENTS 1 Contents GENERAL DESCRIPTION

  14. Investigation of Possible Extra ~Recharge During Pumping in Nottinghant .Aquifer

    E-Print Network [OSTI]

    Jiao, Jiu Jimmy

    Investigation of Possible Extra ~Recharge During Pumping in Nottinghant .Aquifer by Jiu J. Jiaoa Abstract Approaches to investigate possible recharge during a pumping test period are demonstrated by analyzing the pumping test data from the Nottingham aquifer, UK. The pumping lasted more than 200 days

  15. Classical and quantum pumping in closed systems Doron Cohen*

    E-Print Network [OSTI]

    Cohen, Doron

    Classical and quantum pumping in closed systems Doron Cohen* Department of Physics, Ben 17 December 2004 by M. Heiblum Available online 6 January 2005 Abstract Pumping of charge (Q for classical dissipative pumping, classical adiabatic pumping, and in particular we make an explicit

  16. K-Basin sludge treatment facility pump test report

    SciTech Connect (OSTI)

    SQUIER, D.M.

    1999-06-02T23:59:59.000Z

    Tests of a disc pump and a dual diaphragm pump are stymied by pumping a metal laden fluid. Auxiliary systems added to a diaphragm pump might enable the transfer of such fluids, but the additional system complexity is not desirable for remotely operated and maintained systems.

  17. Geothermal heat pumps for heating and cooling

    SciTech Connect (OSTI)

    Garg, S.C.

    1994-03-01T23:59:59.000Z

    Naval Facilities Engineering Service Center (NFESC) has been tasked by Naval Shore Facilities Energy Office to evaluate the NAS Patuxent River ground-source heat pump (GHP) installation. A large part of a building`s energy consumption consists of heating and air conditioning for occupant comfort. The space heating requirements are normally met by fossil-fuel-fired equipment or electric resistance heating. Cooling is provided by either air conditioners or heat pumps, both using electricity as an energy source.

  18. Optical pumping into many-body entanglement

    E-Print Network [OSTI]

    Jaeyoon Cho; Sougato Bose; M. S. Kim

    2011-01-16T23:59:59.000Z

    We propose a scheme of optical pumping by which a system of atoms coupled to harmonic oscillators is driven to an entangled steady state through the atomic spontaneous emission. It is shown that the optical pumping can be tailored so that the many-body atomic state asymptotically reaches an arbitrary stabilizer state regardless of the initial state. The proposed scheme can be suited to various physical systems. In particular, the ion-trap realization is well within current technology.

  19. Pumping-Restriction Theorem for Stochastic Networks

    E-Print Network [OSTI]

    V. Y. Chernyak; N. A. Sinitsyn

    2008-09-02T23:59:59.000Z

    We formulate an exact result, which we refer to as the pumping restriction theorem (PRT). It imposes strong restrictions on the currents generated by periodic driving in a generic dissipative system with detailed balance. Our theorem unifies previously known results with the new ones and provides a universal nonperturbative approach to explore further restrictions on the stochastic pump effect in non-adiabatically driven systems.

  20. Laser-induced quantum pumping in graphene

    SciTech Connect (OSTI)

    San-Jose, Pablo [Instituto de Estructura de la Materia (IEM-CSIC), Serrano 123, 28006 Madrid (Spain); Prada, Elsa; Kohler, Sigmund [Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid (Spain); Schomerus, Henning [Department of Physics, Lancaster University, Lancaster LA1 4YB (United Kingdom)

    2012-10-08T23:59:59.000Z

    We investigate non-adiabatic electron pumping in graphene generated by laser irradiation with linear polarization parallel or perpendicular to the transport direction. Transport is dominated by the spatially asymmetric excitation of electrons from evanescent into propagating modes. For a laser with parallel polarization, the pumping response exhibits a subharmonic resonant enhancement which directly probes the Fermi energy; no such enhancement occurs for perpendicular polarization. The resonance mechanism relies on the chirality of charge carriers in graphene.

  1. Pump pulse-width dependence of grazing-incidence pumped transient collisional soft-x-ray lasers M. Berrill,1

    E-Print Network [OSTI]

    Rocca, Jorge J.

    Pump pulse-width dependence of grazing-incidence pumped transient collisional soft-x-ray lasers M 2007 The output energy dependence of high repetition rate grazing incidence pumped Ni-like Mo, Ni-like Ag, and Ne-like Ti transient collisional soft x-ray lasers on the duration of the pump pulse

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

    E-Print Network [OSTI]

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

    2006-01-01T23:59:59.000Z

    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...

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

    E-Print Network [OSTI]

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

    2006-01-01T23:59:59.000Z

    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...

  4. PREPARATION AND IMPLANTATION ALZET OSMOTIC PUMPS (SOP-9) Osmotic pumps manufactured by ALZA Corporation (Palo Alto, CA) are

    E-Print Network [OSTI]

    Kleinfeld, David

    is compatible with most drugs and drug diluents, except aliphatic and aromatic hydrocarbons and natural oils oils on the pump #12;surface may interfere with proper pump performance. If a pump becomes contaminated depress the plunger of the syringe. When solution appears at the pump outlet, stop injecting and slowly

  5. Heat-Of-Reaction Chemical Heat Pumps--Possible Configurations

    E-Print Network [OSTI]

    Kirol, L. D.

    for water and gas connections, and temperature variations. Recent work on heat pump cycles using complex compound reactions includes development of energy storage systems at laboratories in Europe (11) and the United States (12), and residential...ABSTRACT Chemical heat pumps utilize working fluids which undergo reversible chemical changes. Mechanically driven reactive heat pump cycles or, alternatively, hl~a: driven heat pumps in which either heat engine or heat pump working fluid...

  6. Electric Fuel Pump Condition Monitor System Using Electricalsignature Analysis

    DOE Patents [OSTI]

    Haynes, Howard D [Knoxville, TN; Cox, Daryl F [Knoxville, TN; Welch, Donald E [Oak Ridge, TN

    2005-09-13T23:59:59.000Z

    A pump diagnostic system and method comprising current sensing probes clamped on electrical motor leads of a pump for sensing only current signals on incoming motor power, a signal processor having a means for buffering and anti-aliasing current signals into a pump motor current signal, and a computer having a means for analyzing, displaying, and reporting motor current signatures from the motor current signal to determine pump health using integrated motor and pump diagnostic parameters.

  7. Advanced Chemical Heat Pumps Using Liquid-Vapor Reactions

    E-Print Network [OSTI]

    Kirol, L.

    ADVANCED CHEMICAL HEAT PUMPS USING LIQUID-VAPOR REACTIONS LANCE KIROL Senior Program Specialist Idaho National Engineering Laboratory Idaho Falls, Idaho . ABSTRACT Chemical heat pumps utilizing liquid-vapor reactions can be configured... in forms analogous to electric drive vapor-compression heat pumps and heat activated absorption heat pumps. Basic thermodynamic considerations eliminate some heat pumps and place restrictive working fluid requirements on others, but two thermodynam...

  8. Industrial and Commercial Heat Pump Applications in the United States

    E-Print Network [OSTI]

    Niess, R. C.

    compression cycle. Using readily available fluorocarbon refrigerants as the heat pump working fluid, this cycle is commonly used because of its wide application opportunities. Compressed Vapors Heat Pump Compressor Heat Sink PrOCess (Condenser... 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...

  9. Value of Irrigation Water with Alternative Input Prices, Product Prices and Yield Levels: Texas High Plains and Rio Grande Valley

    E-Print Network [OSTI]

    Lacewell, R. D.; Sprott, J. M.; Beattie, B. R.

    Agriculture is a major income generating sector of the Texas economy. Irrigated agriculture is an important part of Texas agriculture and an "adequate" water supply is important in maintaining a viable agriculture. Irrigation water is important both...

  10. Costs of Saving Water in South Texas with Irrigation District Infrastructure Rehabilitation - Using Capital Budgeting with RGIDECON©

    E-Print Network [OSTI]

    Rister, E.; Lacewell, R.; Sturdivant, A.

    As a part of the irrigation district plans, economists with Texas AgriLife Research and the Texas AgriLife Extension Service (through the Rio Grande Basin Initiative), developed and applied a spreadsheet model RGIDECON© (Rio Grande Irrigation...

  11. Cultural Experiments with Yellow Bermuda Onions under Irrigation.

    E-Print Network [OSTI]

    Hawthorn, L. R. (Leslie Rushton)

    1938-01-01T23:59:59.000Z

    year to year. Previous to the 1935-36 season there were three replications of each treatment. Beginning with that season the replications were in- creased to four. The frequency of irrigation experiments were planted in plats 109 feet long... on the numbers of plants of the various sizes. 1932-33: 1933-34: 1034-35: I I 1935-36: I 19313-37: Direct Field Sowing vs. Transplanting: In the first season of this test the seed was sown on the same day (September 19) in both the seedbed and the field...

  12. Modesto Irrigation District Smart Grid Project | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, searchOfRose BendMiasole IncMinuteman WindMoana(Tempel, EtModesto Irrigation

  13. Combined water use of turf and woody ornamentals in an irrigated South Texas landscape

    E-Print Network [OSTI]

    Havlak, Roger Dale

    2004-01-01T23:59:59.000Z

    landscape and to determine the relationship between ET[a] and ET[p] to develop a landscape irrigation coefficient. An additional objective was to assess the effects of several landscape species on soil water dynamics in an irrigated South Texas landscape...

  14. Impacts of Irrigation on Citrus in the Lower Rio Grande Valley

    E-Print Network [OSTI]

    Enciso, Juan; Sauls, Julian W.; Wiedenfeld, Robert P.; Nelson, Shad D.

    2008-07-11T23:59:59.000Z

    Citrus is an important crop in the Lower Rio Grande Valley, but reduced water supplies in the area mean irrigation must be used. Citrus farmers can use different irrigation methods and practices to get the most from the available water supply....

  15. Linear Programming and Future Landuse Scenarios: An Irrigated Catchment Case Study 1 2

    E-Print Network [OSTI]

    Dragoti-Çela, Eranda

    by price trends and productivity and constrained by water resources, land capability and investment capital) and reform in the water supply sector will secure the resource base of irrigated agriculture at a cost which Gyles and Olive Montecillo Potential for change in the mix of irrigated enterprises was estimated

  16. Water Loss Test Results for the West Main Pipeline United Irrigation District of Hidalgo County 

    E-Print Network [OSTI]

    Leigh, E.; Fipps, G.

    2008-01-01T23:59:59.000Z

    TR-322 2008 Water Loss Test Results for the West Main Pipeline United Irrigation District of Hidalgo County Eric Leigh Texas AgriLife Extension Associate, Biological and Agricultural Engineering, College... Station Guy Fipps Texas AgriLife Extension Professor and Extension Agricultural Engineer, Biological and Agricultural Engineering, College Station March 20, 2007 Water Loss Test Results for the West Main Pipeline United Irrigation...

  17. Water Loss Test Results for the West Main Pipeline United Irrigation District of Hidalgo County

    E-Print Network [OSTI]

    Leigh, E.; Fipps, G.

    TR-322 2008 Water Loss Test Results for the West Main Pipeline United Irrigation District of Hidalgo County Eric Leigh Texas AgriLife Extension Associate, Biological and Agricultural Engineering, College... Station Guy Fipps Texas AgriLife Extension Professor and Extension Agricultural Engineer, Biological and Agricultural Engineering, College Station March 20, 2007 Water Loss Test Results for the West Main Pipeline United Irrigation...

  18. Fine-tuning Applied Nitrogen Rates for Sprinkler and Flood Irrigated Sugarbeet Production

    E-Print Network [OSTI]

    Lawrence, Rick L.

    typical irrigation practices, as well as increasing producers' input costs. An irrigation management study Eckhoff and Charles Flynn, Eastern Agricultural Research Center, Sidney, Montana Introduction Good content of 2.5%. Using a randomized complete block design, N was applied so that available N rates

  19. Rainwater harvesting system with roof catchment, gutter, downspout, storage and drip irrigation system.

    E-Print Network [OSTI]

    Stephens, Graeme L.

    Rainwater harvesting system with roof catchment, gutter, downspout, storage and drip irrigation:30 am systems: rain barrel, drip irrigation, stock watering Program: 8:30 am ­ 4:00 pm indoor usage system. Douglas County Conservation District and the Rural Water Authority of Douglas County Present: Who

  20. H observer for time-delay systems Application to FDI for irrigation canals

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    H observer for time-delay systems Application to FDI for irrigation canals N. Bedjaoui, X. Litrico and isolation for time-varying delayed systems. It consists to develop a H observer that generates residuals occur on the regulation gates of an irrigation canal. The observer design uses a simplified approximate

  1. Project Title: Effects of Biosolid Land Application on Pathogens in Irrigation Return Flow

    E-Print Network [OSTI]

    Fay, Noah

    Project Title: Effects of Biosolid Land Application on Pathogens in Irrigation Return Flow and College of Agriculture and Life Sciences Advisor: Dr. Chris Choi Abstract: Biosolid land application in irrigation return flow from fields applied with biosolids. The results of this study showed that during

  2. Water Availability, Degree Days, and the Potential Impact of Climate Change on Irrigated Agriculture in California

    E-Print Network [OSTI]

    Fisher, Anthony C.

    California, climate change is likely to affect agriculture in two distinct ways. One pathway is the directWater Availability, Degree Days, and the Potential Impact of Climate Change on Irrigated influences on value such as soil quality, to examine the potential effects of climate change on irrigated

  3. Impact of Climate Change on Irrigation Water Availability, Crop Water Requirements and Soil Salinity in the SJV, CA

    E-Print Network [OSTI]

    Hopmans, Jan W; Maurer, Edwin P

    2008-01-01T23:59:59.000Z

    on Irrigation Water Availability, Crop Water Requirementsreduced surface water availability can be managed byrequirement and water availability (surface water and

  4. An Overview of Operational Characteristics of Selected Irrigation Districts in the Texas Lower Rio Grande Valley: Harlingen Irrigation District Cameron County No. 1

    E-Print Network [OSTI]

    Wolfe, Clint D.; Stubbs, Megan J.; Rister, M. Edward; Sturdivant, Allen W.; Lacewell, Ronald D.; Pennington, Ellen L.; Rogers, Callie S.

    Population expansion and water shortfalls have placed the Texas Lower Rio Grande Valley (Valley) center stage in water publicity. The unique characteristics and lack of public knowledge on how irrigation districts divert and convey water from...

  5. RED MOUNTAIN BAR PUMPED STOR AGE PR OJEC T Red Mountain Bar Pumped Storage Project

    E-Print Network [OSTI]

    Laughlin, Robert B.

    a pumped storage project to generate electricity during peak demand. The proposed Red Mountain Bar Pumped from a lower reservoir to an upper reservoir when demand and price for electricity is low. Water the next day. These projects are uniquely suited for generating power when demand for electricity is high

  6. The art of smart irrigation: Researchers work to find the smartest irrigation controllers while educating auditors and homeowners to be smart too

    E-Print Network [OSTI]

    Lee, Leslie

    2011-01-01T23:59:59.000Z

    of the Texas ET (evapotranspiration) Network, which is an Irrigation Technology Center (ITC) program that provides online weather information, current and average ET data, and customizable irrigation recommendations. ITC is partially supported through... and Swanson predict that the selection of controllers designed for residential use, though currently fairly limited, will continue to grow, and the devices will eventually be bene#18;cial for homeowners. ?I would recommend that users hold o#28...

  7. UBC Social Ecological Economic Development Studies (SEEDS) Student Report An Investigation into New SUB Rooftop Garden Irrigations Systems

    E-Print Network [OSTI]

    SUB Rooftop Garden Irrigations Systems Harsh Juneja Randy Or Boris Tello Manraj Singh Thind University SUSTAINABILITY REPORT: An Investigation into Rooftop Irrigation Systems Harsh Juneja Randy Or Boris Tello Manraj. Using the triple bottom line analysis, a new recommendation for an irrigation system is made. Sprinklers

  8. UBC Social Ecological Economic Development Studies (SEEDS) Student Report An Investigation into New SUB Rooftop Garden Irrigations Systems

    E-Print Network [OSTI]

    SUB Rooftop Garden Irrigations Systems Brianne Dahle John Mollica Hao Zhang University of British Investigation into New SUB Rooftop Garden Irrigation Systems Prepared by: Brianne Dahle John Mollica Hao Zhang to a monitoring system. However, its main focus is a comparative analysis of the considered irrigation systems

  9. UBC Social Ecological Economic Development Studies (SEEDS) Student Report An Investigation into New SUB Rooftop Garden Irrigations Systems

    E-Print Network [OSTI]

    SUB Rooftop Garden Irrigations Systems Seungmin Lee Alexandra Nan Meredith Kealty Kevin Pan University INVESTIGATION OF ROOFTOP GARDEN IRRIGATION SYSTEMS APSC 262 Instructor: Ms. Carla Paterson University of British an irrigation system to keep the garden sufficiently watered during these periods. There is a wide range

  10. SUBSTANTIATION OF SITE SELECTION FOR THE RESEARCH OF SUSTAINABLE WATER MANAGEMENT WITHIN IRRIGATION SYSTEMS OF SOKULUK RIVER

    E-Print Network [OSTI]

    Richner, Heinz

    with the irrigation system which constituted the economic basis for the society, and by late XX century the area and newly operated irrigation systems are especially acute during the period of transition to market economy in water use sector. These issues are especially sensitive in the lower section of irrigation systems

  11. Towards an improved understanding of free-riding in collec-tive irrigation systems: proposition of a basic

    E-Print Network [OSTI]

    Richner, Heinz

    1 Towards an improved understanding of free-riding in collec- tive irrigation systems: proposition system dynamics model for collective irrigation management is proposed, which is aimed at improving-riding on water in irrigation systems is addressed. A feedback system is introduced, which builds on the concept

  12. UBC Social Ecological Economic Development Studies (SEEDS) Student Report An Investigation into New SUB Rooftop Garden Irrigations Systems

    E-Print Network [OSTI]

    SUB Rooftop Garden Irrigations Systems William Huang Michael Jewett Callum McGregor Mike Rafa Investigation into Rooftop Garden Irrigation Systems Prepared by: William Huang Michael Jewett Callum Mc & Society #12;i ABSTRACT The objective of this report is to assess a variety of irrigation systems and make

  13. 28 / JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING / JANUARY/FEBRUARY 2000 DESIGN OF MINIMUM SEEPAGE LOSS CANAL SECTIONS

    E-Print Network [OSTI]

    Chahar, B. R.

    . INTRODUCTION Canals continue to be major conveyance systems for deliv- ering water for irrigation28 / JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING / JANUARY/FEBRUARY 2000 DESIGN OF MINIMUM in the alluvial plains of India. But the seepage loss from irrigation canals constitutes a substantial percentage

  14. Cold Climates Heat Pump Design Optimization

    SciTech Connect (OSTI)

    Abdelaziz, Omar [ORNL] [ORNL; Shen, Bo [ORNL] [ORNL

    2012-01-01T23:59:59.000Z

    Heat pumps provide an efficient heating method; however they suffer from sever capacity and performance degradation at low ambient conditions. This has deterred market penetration in cold climates. There is a continuing effort to find an efficient air source cold climate heat pump that maintains acceptable capacity and performance at low ambient conditions. Systematic optimization techniques provide a reliable approach for the design of such systems. This paper presents a step-by-step approach for the design optimization of cold climate heat pumps. We first start by describing the optimization problem: objective function, constraints, and design space. Then we illustrate how to perform this design optimization using an open source publically available optimization toolbox. The response of the heat pump design was evaluated using a validated component based vapor compression model. This model was treated as a black box model within the optimization framework. Optimum designs for different system configurations are presented. These optimum results were further analyzed to understand the performance tradeoff and selection criteria. The paper ends with a discussion on the use of systematic optimization for the cold climate heat pump design.

  15. Solar-powered turbocompressor heat pump system

    DOE Patents [OSTI]

    Landerman, A.M.; Biancardi, F.R.; Melikian, G.; Meader, M.D.; Kepler, C.E.; Anderson, T.J.; Sitler, J.W.

    1982-08-12T23:59:59.000Z

    The turbocompressor comprises a power turbine and a compressor turbine having respective rotors and on a common shaft, rotatably supported by bearings. A first working fluid is supplied by a power loop and is expanded in the turbine. A second working fluid is compressed in the turbine and is circulated in a heat pump loop. A lubricant is mixed with the second working fluid but is excluded from the first working fluid. The bearings are cooled and lubricated by a system which circulates the second working fluid and the intermixed lubricant through the bearings. Such system includes a pump, a thermostatic expansion valve for expanding the working fluid into the space between the bearings, and a return conduit system for withdrawing the expanded working fluid after it passes through the bearings and for returning the working fluid to the evaporator. A shaft seal excludes the lubricant from the power turbine. The power loop includes a float operable by liquid working fluid in the condenser for controlling a recirculation valve so as to maintain a minimum liquid level in the condenser, while causing a feed pump to pump most of the working fluid into the vapor generator. The heat pump compressor loop includes a float in the condenser for operating and expansion valve to maintain a minimum liquid working fluid level in the condenser while causing most of the working fluid to be expanded into the evaporator.

  16. Miniature thermo-electric cooled cryogenic pump

    DOE Patents [OSTI]

    Keville, Robert F. (Valley Springs, CA)

    1997-01-01T23:59:59.000Z

    A miniature thermo-electric cooled cryogenic pump for removing residual water molecules from an inlet sample prior to sample analysis in a mass spectroscopy system, such as ion cyclotron resonance (ICR) mass spectroscopy. The cryogenic pump is a battery operated, low power (<1.6 watts) pump with a .DELTA.T=100.degree. C. characteristic. The pump operates under vacuum pressures of 5.times.10.sup.-4 Torr to ultra high vacuum (UHV) conditions in the range of 1.times.10.sup.-7 to 3.times.10.sup.-9 Torr and will typically remove partial pressure, 2.times.10.sup.-7 Torr, residual water vapor. The cryogenic pump basically consists of an inlet flange piece, a copper heat sink with a square internal bore, four two tier Peltier (TEC) chips, a copper low temperature square cross sectional tubulation, an electronic receptacle, and an exit flange piece, with the low temperature tubulation being retained in the heat sink at a bias angle of 5.degree., and with the TECs being positioned in parallel to each other with a positive potential being applied to the top tier thereof.

  17. Miniature thermo-electric cooled cryogenic pump

    DOE Patents [OSTI]

    Keville, R.F.

    1997-11-18T23:59:59.000Z

    A miniature thermo-electric cooled cryogenic pump is described for removing residual water molecules from an inlet sample prior to sample analysis in a mass spectroscopy system, such as ion cyclotron resonance (ICR) mass spectroscopy. The cryogenic pump is a battery operated, low power (<1.6 watts) pump with a {Delta}T=100 C characteristic. The pump operates under vacuum pressures of 5{times}10{sup {minus}4} Torr to ultra high vacuum (UHV) conditions in the range of 1{times}10{sup {minus}7} to 3{times}10{sup {minus}9} Torr and will typically remove partial pressure, 2{times}10{sup {minus}7} Torr, residual water vapor. The cryogenic pump basically consists of an inlet flange piece, a copper heat sink with a square internal bore, four two tier Peltier (TEC) chips, a copper low temperature square cross sectional tubulation, an electronic receptacle, and an exit flange piece, with the low temperature tubulation being retained in the heat sink at a bias angle of 5{degree}, and with the TECs being positioned in parallel to each other with a positive potential being applied to the top tier thereof. 2 figs.

  18. Use of Ultrafast Dispersed Pump-Dump-Probe and Pump-Repump-Probe Spectroscopies to Explore the Light-Induced Dynamics of Peridinin in Solution

    E-Print Network [OSTI]

    van Stokkum, Ivo

    Use of Ultrafast Dispersed Pump-Dump-Probe and Pump-Repump-Probe Spectroscopies to Explore Form: NoVember 14, 2005 Optical pump-induced dynamics of the highly asymmetric carotenoid peridinin in methanol was studied by dispersed pump-probe, pump-dump-probe, and pump-repump-probe transient absorption

  19. Use of Irrigation to Extend the Seeding Window for Final Reclamation at Yucca Mountain, Nevada

    SciTech Connect (OSTI)

    TRW Environmental Safety

    2000-08-01T23:59:59.000Z

    The U.S. Department of Energy has implemented a program to investigate the feasibility of various techniques for reclaiming lands disturbed during site characterization at Yucca Mountain. As part of this program, two studies were conducted in 1997 to assess the effects of combinations of seeding date (date that seeds are planted) and supplemental irrigation on densities of native plant species at Yucca Mountain. Study objectives were to (1) determine whether the traditional seeding window (October-December) could be extended through combinations of seeding date and irrigation date, (2) determine which combination of seeding date and irrigation was most successful, and (3) assess the effects of irrigation versus natural precipitation on seedling establishment. In the first study, a multi-species seed mix of 16 native species was sown into plots on four dates (12/96, 2/97, 3/97, and 4/97). Irrigation treatments were control (no irrigation) or addition of 80 mm of supplemental water applied over a one month period. Plant densities were sampled in August and again in October, 1997. In the second study, Larrea tridentata and Lycium andersonii, two species that are common at Yucca Mountain, but difficult to establish from seed, were sown together into plots in January and August, 1997. Half the plots were irrigated with approximately 250 mm of water between August 18 and September 11, while the remaining plots received no irrigation (control). Plant densities were sampled in October, 1997. The August census for the multi-species mix study showed irrigated plots that were sown in February, March and April had higher plant densities and more species than plots that were not irrigated. Irrigation had no effect on plant densities on plots that were seeded in December. Plots were used again in October following 18 mm of precipitation in September. Densities of three species, Ambrosia dumosa, Hymenoclea salsola, and L. tridentata, (warm-season species) were lower on irrigated plots sown in December, February, and March, and showed no response to irrigation on plots sown in April. Therefore, early spring irrigation did not facilitate establishment of warm-season species. These results suggest that these species are dependent upon precipitation while temperatures are warm in late summer or fall. However, control plots that were seeded in December had acceptable densities of these species. A more practical approach might be to avoid irrigation costs by seeding in December and waiting for fall precipitation. The remaining species (cool-season species) showed an opposite response to supplemental water with greater densities on irrigated plots sown in February, March, and April, and no response to irrigation on plots sown in December. While these results show that irrigation can extend the seeding window for cool-season species should it be necessary, it was also apparent that if seeds are sown by late December, irrigation is not necessary to achieve acceptable plant densities.

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

    Office of Environmental Management (EM)

    Residential Multi-Function Gas Heat Pump: Efficient Engine-Driven Heat Pump for the Residential Sector - Fact Sheet, 2013 Residential Multi-Function Gas Heat Pump: Efficient...