National Library of Energy BETA

Sample records for tractors irrigation pumps

  1. Linear tractor dry coal extrusion pump

    DOE Patents [OSTI]

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

    2011-10-18

    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

    SciTech Connect (OSTI)

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

    2008-06-17

    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. Stirling Engines and Irrigation Pumping

    SciTech Connect (OSTI)

    West, C.D.

    1987-01-01

    This report was prepared in support of the Renewable Energy Applications and Training Project that is sponsored by the U.S. Agency for International Development for which ORNL provides technical assistance. It briefly outlines the performance that might be achievable from various kinds of Stirling-engine-driven irrigation pumps. Some emphasis is placed on the very simple liquid-piston engines that have been the subject of research in recent years and are suitable for manufacture in less well-developed countries. In addition to the results quoted here (possible limits on M4 and pumping head for different-size engines and various operating conditions), the method of calculation is described in sufficient detail for engineers to apply the techniques to other Stirling engine designs for comparison.

  4. Energy efficiency of Pacific Northwest agriculture irrigation pumping systems

    SciTech Connect (OSTI)

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

    1987-03-01

    This document addresses the energy use and efficiency characteristics of pumping plants used to irrigate agricultural cropland in the Pacific Northwest. The principal focus of this document is on field information obtained from tests of irrigation pumping plants.

  5. Evaluation of pumps for wind-driven irrigation. Final report

    SciTech Connect (OSTI)

    Marjon, P.L.; Clark, R.N.

    1982-11-01

    The report contains a survey of a variety of pumping equipment that can be used for wind power irrigation applications. Data are developed and sample results are presented on the economics of wind driven irrigation pumps as compared with other types of energy source-irrigation pump contributions. Conclusions are presented on the economics of wind driven irrigation pumps and suggestions are given for improving the economic potential.

  6. Optimal pump selection for large-scale irrigation systems

    SciTech Connect (OSTI)

    Buchleiter, G.W.

    1986-01-01

    A general computer program was developed to provide recommendations for improving the water and energy management on a branched irrigation distribution pipeline network with a single source and multiple pump stations. The program has three main parts: (1) irrigation scheduling, (2) hydraulic model for the determination of head and flow requirements for any desired irrigation schedule, and (3) optimal pump selection that supplies the head and flow requirements. Irrigation scheduling provides recommendations for irrigating each field served by the distribution network. The hydraulic model calculates the flow and head required at each pump station to satisfy any irrigation schedule desired by the user. The pump-selection algorithm recommends the pump combination at each pump station, which gives the lowest total energy cost for the farm. The program was field tested on a 4850 ha. farm in north central Oregon for two irrigation seasons. Preliminary estimates indicate that energy costs can be reduced by at least 20% by operating the most economical pump combinations. Additional savings are possible by applying only the water required by the crop, by rearranging irrigation schedules to reduce peak electrical demands, and taking advantage of lower electrical-demand charges during off-peak time periods.

  7. Stand-alone irrigation pumping with wind energy

    SciTech Connect (OSTI)

    Clark, R.N.

    1982-12-01

    Windpower is one of the oldest forms of energy used for pumping water. Several thousand windmills are still used today to provide water for livestock and domestic needs. Because of the large water volume needed for irrigation, irrigators have selected natural gas, electricity, or diesel fuel as power sources for their irrigation pump. Wind turbines have been successfully used to generate electricity to supplement electrical requirements of irrigation systems; however, not all irrigation pumps have electricity readily available. Because of the need for an independent, high-volume pumping system powered by the wind, the USDA-ARS, Bushland, TX and the Alternative Energy Institute, Canyon, TX have designed and constructed a stand-alone wind-powered pumping system. The initial effort was an in-depth study of all types of pumps in order to locate a pump which could deliver a steady 15-to-20 l/s flow rate while the input power varied in rpm and torque. A progressive-cavity pump was selected as being best for use in moderate and deep well applications where the total head was more than 15 m. A 10-cm progressive-cavity pump was purchased and installed on a 4-kW vertical-axis wind turbine with a mechanical linkage between the wind turbine and pump. Performance data indicated that flow was 10 l/s, and head 12 m at a windspeed of 16 m/s. When the windspeed dropped to 9 m/s, the pumping load caused the wind turbine to stall. Because of the highly variable power output of the wind turbine, no presently-manufactured pump is satisfactory for stand-alone irrigation pumping.

  8. Optimal Real-Time Pump and Irrigation Scheduling for Center-Pivot Sprinkler Systems.

    SciTech Connect (OSTI)

    Chou, Frederick N-F.

    1988-09-01

    Center-pivot farms located on major river systems generally pump water from the surface source and convey it through a pressurized pipe network to the pivots. Booster pump stations may be placed in the system to add necessary head for water delivery to the pivots. Attempts to improve pump and irrigation scheduling must make sure that soil moisture levels are maintained within desired limits for favorable crop growth. A soil water balance model and a branching pipe network hydraulics analysis model are therefore necessary for simulating system behavior and estimating pumping costs. The objective of this study is to develop a dynamic irrigation scheduling algorithm for achieving minimum pumping cost over a billing period, object to maintaining optimum crop production and adequate system delivery pressures. After investigation of several optimization methods, dynamic programming successive approximations (DPSA) is selected as the best approach to solving this problem. Feasibility in scheduling pivot operations and maintaining favorable soil water levels is always guaranteed during the DPSA analysis. Discrete dynamic programming is also applied for selecting pump combinations in each pump station with consideration of hydraulic interaction between stations to minimize pumping cost during each scheduling period for a specified irrigation strategy. A modified objective function is adopted for commensurating objectives of minimizing energy consumption and peak power demand. A comprehensive, generalized irrigation scheduling algorithm is developed to effectively integrate optimal irrigation decision with optimal pump selection. 116 refs.

  9. Effects of electricity rates and rate structures on pump irrigation: an eastern Colorado case study

    SciTech Connect (OSTI)

    Gardner, R.L.; Young, R.A.

    1984-11-01

    This article analyzes the effects of electricity rate policy on electricity demand (and the derived effect on irrigation water use) via a case study in eastern Colorado. Empirical demand curves for electricity for pump irrigation are estimated. Alternative rate structures are tested for their effect on electricity and water use patterns, farm income, and utility revenue. Particular attention is given to the problem of modeling a declining block structure. 11 references, 1 figure, 3 tables.

  10. Development of an endoscopic irrigation pump experience with Byrne Medical, Inc. 

    E-Print Network [OSTI]

    Cheng, Lui

    2007-09-17

    . Buenger Kenith Meissner Hsin-i Wu Dawn M. Burks Head of Department, A.K. Anand May 2007 Major Subject: Engineering iii ABSTRACT Development of an Endoscopic Irrigation Pump Experience with Byrne Medical, Inc. (May 2007... but fast growing company. Ms. Dawn Burks served as my internship supervisor who taught me how to be a good product development engineer. Alan Smith and Rusty Smith gave me opportunities to work on several exciting projects through which I gained some...

  11. A rational power supply and pricing policy for pump irrigation could be a powerful tool for the indirect management of both groundwater and

    E-Print Network [OSTI]

    Scott, Christopher

    A rational power supply and pricing policy for pump irrigation could be a powerful tool Policy Program Putting research knowledge into action The Energy-Irrigation Nexus #12;The Energy-Irrigation is overuse of both energy and water in groundwater-irrigated agriculture--threatening the financial viability

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

    E-Print Network [OSTI]

    Ritschard, R.L.

    2011-01-01

    electricity requirements to pump irrigation water focused onelectricity requirements to pump irrigation water focused onprograms for irrigation record keeping, pump testing and

  13. 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)

    2000-01-01

    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.

  14. 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

    2013-01-01

    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 ...

  15. Safe Tractor Operation: Rollover Prevention 

    E-Print Network [OSTI]

    Smith, David

    2005-04-07

    About 250 people are killed each year in tractor accidents, and rollovers cause more than half of these fatalities. In this publication you'll learn about the physics of tractor stability, how to prevent side and rear ...

  16. Vegetable oils for tractors

    SciTech Connect (OSTI)

    Moroney, M.

    1981-11-14

    Preliminary tests by the Agricultural Institute, show that tractors can be run on a 50:50 rape oil-diesel mixture or on pure rape oil. In fact, engine power actually increased slightly with the 50:50 blend but decreased fractionally with pure rape oil. Research at the North Dakota State University on using sunflower oil as an alternative to diesel fuel is also noted.

  17. 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.

    2003-01-01

    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 Rister Ronald D. Lacewell Allen W. Sturdivant John R... District No. 2 (San Benito) page xiv of 82 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...

  18. Safe Tractor Operation: Driving on Highways 

    E-Print Network [OSTI]

    Smith, David

    2004-09-16

    of the car first notices the tractor while still 400 feet behind it, the driver has less than 10 seconds to avoid a collision with the tractor. In this time, the driver of the car must recognize the danger, determine the speed the tractor is traveling... the brakes, clutch and steering mechanisms, and often cannot see everything around them while sitting in the tractor seat. Don?t put your child in this dangerous situation. Chil- dren should never drive tractors on public roads. Extra Riders Except...

  19. 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACT EVALUATIONIntroducing theActivation by CytochromeIrreversible

  20. DPF for a Tractor Auxiliary Power Unit | Department of Energy

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

    for a Tractor Auxiliary Power Unit DPF for a Tractor Auxiliary Power Unit Poster presentation at the 2007 Diesel Engine-Efficiency & Emissions Research Conference (DEER 2007)....

  1. 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...

  2. Cutting energy costs for irrigation

    SciTech Connect (OSTI)

    Senft, D.

    1991-05-01

    A computer program is described that can cut power consumption by irrigation pumps up to 20 percent - a savings that translates into more efficient food production and significant energy conservation. The program calculates the pressure required from pumps to move water to center pivot sprinklers that the irrigator needs. The computer knows the individual performance characteristics of each pump in the system and keeps track of the peak electrical demand of each pump station during the billing period.

  3. Shamba Maisha: A pilot study assessing impacts of a micro-irrigation intervention on the health and economic wellbeing of HIV patients

    E-Print Network [OSTI]

    Pandit, Jay A; Sirotin, Nicole; Tittle, Robin; Onjolo, Elijah; Bukusi, Elizabeth A; Cohen, Craig R

    2010-01-01

    of providing a micro-irrigation pump to HIV-positive farmersloan to receive an irrigation pump and farming guidance froma low-cost micro-irrigation pump which is purchased by local

  4. Technical descriptions of ten irrigation technologies for conserving energy

    SciTech Connect (OSTI)

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

    1983-05-01

    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)

  5. Power cost saving irrigation method and apparatus

    SciTech Connect (OSTI)

    Fritz, D.H.

    1993-08-10

    An irrigation system is described for irrigating an area comprising: a pipe for delivering water to the area to be irrigated; a pump connected to the pipe for delivering a first water supply from a reservoir to the pipe; a timer operatively associated with the pump for activating said pump during a first predetermined time period; a second water supply connectable to the pipe during a second predetermined time period when the pump is deactivated; a first valve; and the second water supply being connectable to the reservoir through the first valve for maintaining water in the reservoir.

  6. Selection of a Wear-Resistant Tractor Drivetrain Material: Success...

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

    Drivetrain Material: Success stories at the High Temperature Materials Laboratory (HTML) User Program Selection of a Wear-Resistant Tractor Drivetrain Material: Success...

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

    E-Print Network [OSTI]

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

    2006-01-01

    Initial construction costs and net annual changes in operating and maintenance expenses are identified for a three-component capital renovation project proposed by the United Irrigation District to the U.S. Bureau of ...

  8. 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.

    2005-01-01

    Initial construction costs and net annual changes in operating and maintenance expenses are identified for a three-component capital renovation project proposed by the United Irrigation District to the U.S. Bureau of Reclamation (USBR). The proposed...

  9. Fuel cell powered irrigation system

    SciTech Connect (OSTI)

    Jacobi, E.F.; Madden, M.R.

    1982-01-12

    Set out herein is a fuel cell power plant for use with irrigation systems wherein the fuel cell is utilized to generate electric current to drive a pump motor. This pump motor drives a first water pump which receives water for distribution through a traveling irrigation system, the output of the first pump first conveyed into a condenser heat exchanger connected to a steam engine or turbine cycle. The fuel cell itself is contained within a boiler assembly and the heat of production of the electric power is used to generate steam which is sent to the steam engine. In the course of cooling the condenser gases of the steam engine the irrigating water is passed through a second pump driven by the steam engine and it is through this second pump that the pressure is raised sufficiently to allow for the necessary spraying fans. To improve the condenser efficiency part of the condensate or the ullage thereof is connected to one of the spray heads on the irrigation system in a venturi nozzle which thereby lowers the back pressure thereof. The lower portion of the condenser or the liquid part thereof is fed back through yet another condenser pump to the boiler to be regenerated into steam.

  10. Automatic restart of complex irrigation systems

    SciTech Connect (OSTI)

    Werner, H.D.; Alcock, R.; DeBoer, D.W.; Olson, D.I. (South Dakota State Univ., Brookings, SD (United States). Dept. of Agricultural Engineering)

    1992-05-01

    Automatic restart of irrigation systems under load management has the potential to maximize pumping time during off-peak hours. Existing automation technology ranges from time delay relays to more sophisticated control using computers together with weather data to optimize irrigation practices. Centrifugal pumps and water hammer concerns prevent automatic restart of common but often complex irrigation systems in South Dakota. The irrigator must manually prime the pump and control water hammer during pipeline pressurization. Methods to prime centrifugal pumps and control water hammer facilitate automatic restart after load management is released. Seven priming methods and three water hammer control methods were investigated. A sump pump and small vacuum pump were used to test two automatic prime and restart systems in the laboratory. A variable frequency phase converter was also used to automatically control water hammer during pipeline pressurization. Economical methods to safely prime and restart centrifugal pumps were discussed. The water hammer control methods safely pressurize the pipeline but require a higher initial investment. The automatic restart systems can be used to safely restart centrifugal pumps and control water hammer after load management is released. Based upon laboratory research and a technical review of available restart components, a computer software program was developed. The program assists customers in evaluating various restart options for automatic restarting of electric irrigation pumps. For further information on the software program, contact the South Dakota State University, Department of Agricultural Engineering.

  11. Using Renewable Energy to Pump Water 

    E-Print Network [OSTI]

    Mecke, Michael; Enciso, Juan

    2007-06-08

    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...

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

    Broader source: Energy.gov [DOE]

    The following set of reports describes performance data collected from hybrid-electric heavy-duty tractor vehicles in the Coca-Cola fleet. This research was conducted by the National Renewable Energy Laboratory (NREL).

  13. Wind energy for low head irrigation

    SciTech Connect (OSTI)

    Wiersma, J.L.; Bender, A.R.

    1982-12-01

    An air-lift pump utilizing a wind turbine driven air compressor is a viable method of furnishing irrigation water for the establishment of a tree shelter belt. The performance characteristics of the air-lift pump are quantified for use in a design procedure.

  14. Lost conservation opportunities in the Pacific Northwest irrigation sector

    SciTech Connect (OSTI)

    Harrer, B.J.; Hattrup, M.P.

    1987-06-01

    Initial efforts in the study were focused on identifying potential lost opportunities. Results of these efforts resulted in the following measures being identified as potential lost opportunities in the irrigation sector: pumping plant efficiency improvements on both existing and new sprinkler irrigated acres, low-pressure irrigation on new sprinkler acres, and mainline modification and fittings redesign on new sprinkler acres. All of these potential lost opportunities except fittings design were subject to more detailed analyses through a survey of irrigation equipment dealers, pump repairers and country extension agents. Fittings design was omitted from the survey. Results of the survey indicated that only high-efficiency electric motors and correct pump selection methods on existing and new sprinkler systems and low-pressure irrigation on new handmove/sideroll systems should be considered lost opportunities.

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

    E-Print Network [OSTI]

    Connors, Daniel A.

    of pumping units). Week 9: Design of self move (Pivot & Lateral) sprinkler irrigation systems. Week 10Fall 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

  16. An Evaluation of the 1997 Edwards Aquifer Irrigation Suspension Keith O. Keplinger

    E-Print Network [OSTI]

    McCarl, Bruce A.

    dry, that suspending irrigation would have substantially reduced pumping and augmented critical1 An Evaluation of the 1997 Edwards Aquifer Irrigation Suspension Keith O. Keplinger Research;2 An Evaluation of the 1997 Edwards Aquifer Irrigation Suspension ABSTRACT In early 1997, the Texas Edwards

  17. Irrigation System Management for Better Water Usage Howard Neibling, Extension Water Management Engineer

    E-Print Network [OSTI]

    O'Laughlin, Jay

    Irrigation System Management for Better Water Usage Howard Neibling, Extension Water Management · Check pump discharge pressure. If too low, adjust or repair the pump. If additional lines have been added, the pump may need to be re-sized. · Clean pump intake on surface water supplies · Crop root zones

  18. M. Bahrami ENSC 283 Tutorial # 8 1 ENSC 283 Week # 12, Tutorial # 8 Flow in an Irrigation System

    E-Print Network [OSTI]

    Bahrami, Majid

    M. Bahrami ENSC 283 Tutorial # 8 1 ENSC 283 Week # 12, Tutorial # 8 ­ Flow in an Irrigation System aluminum tubing from an engine-driven pump. In its most efficient operating range, the pump output is 0

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

    E-Print Network [OSTI]

    of which needs to be pumped through the irrigation system to supply the entire crop water needs" (Whiffen 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

  20. Comprehensive Irrigation Management 

    E-Print Network [OSTI]

    Cook, K.

    2011-01-01

    ? 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: Devalued service with zero... consumption ? Soil characteristics ? Environmental conditions ? Landscape cultural practices ? Irrigation system performance Comprehensive Irrigation Management ? Restoration of antiquated irrigation systems ? Implementation of new control...

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

    SciTech Connect (OSTI)

    Liquid Carbonic, Inc. and Trucking Research Institute

    1999-08-09

    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.

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

    SciTech Connect (OSTI)

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

    2014-08-01

    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.

  3. Fact #620: April 26, 2010 Class 8 Truck Tractor Weight by Component

    Broader source: Energy.gov [DOE]

    A typical class 8 truck tractor weighs about 17,000 lbs. The powertrain is nearly a quarter of the weight (24%) while the truck body structure is 19%.

  4. Fact #705: December 12, 2011 Fuel Consumption Standards for Combination Tractors

    Broader source: Energy.gov [DOE]

    The National Highway Traffic Safety Administration published a final rule setting fuel consumption standards for heavy trucks in September 2011. For tractor-trailers, the standards focus on the...

  5. Investigation of Tractor Base Bleeding for Heavy Vehicle Aerodynamic Drag Reduction

    SciTech Connect (OSTI)

    Ortega, J; Salari, K; Storms, B

    2007-10-25

    One of the main contributors to the aerodynamic drag of a heavy vehicle is tractor-trailer gap drag, which arises when the vehicle operates within a crosswind. Under this operating condition, freestream flow is entrained into the tractor-trailer gap, imparting a momentum exchange to the vehicle and subsequently increasing the aerodynamic drag. While a number of add-on devices, including side extenders, splitter plates, vortex stabilizers, and gap sealers, have been previously tested to alleviate this source of drag, side extenders remain the primary add-on device of choice for reducing tractor-trailer gap drag. However, side extenders are not without maintenance and operational issues. When a heavy vehicle pivots sharply with respect to the trailer, as can occur during loading or unloading operations, the side extenders can become crushed against the trailer. Consequently, fleet operators are forced to incur additional costs to cover the repair or replacement of the damaged side extenders. This issue can be overcome by either shortening the side extenders or by devising an alternative drag reduction concept that can perform just as effectively as side extenders. To explore such a concept, we investigate tractor base bleeding as a means of reducing gap drag. Wind tunnel measurements are made on a 1:20 scale heavy vehicle model at a vehicle width-based Reynolds number of 420,000. The tractor bleeding flow, which is delivered through a porous material embedded within the tractor base, is introduced into the tractor-trailer gap at bleeding coefficients ranging from 0.0-0.018. To determine the performance of tractor base bleeding under more realistic operating conditions, computational fluid dynamics simulations are performed on a full-scale heavy vehicle within a crosswind for bleeding coefficients ranging from 0.0-0.13.

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

    E-Print Network [OSTI]

    O'Laughlin, Jay

    -sensitive crops are grown, or where water supply may be limited or pumping lift is high. Lower · Agricultural Experiment Station CIS 1055 Table 1. 1994 Idaho acreage irrigated by crop (adapted from 1995 Idaho

  7. IRRIGATION WATER QUALITY FOR AGRICULTURE

    E-Print Network [OSTI]

    Radcliffe, David

    IRRIGATION WATER QUALITY FOR AGRICULTURE Irrigation Water Background In the past, there were minor of irrigation water in Georgia. This is because only a small amount of acreage under irrigated agriculture utilized potable (suitable for drinking) quality water. Thus, quality of irrigation water was not closely

  8. Use of GIS as a Real Time Decision Support System for Irrigation Districts 

    E-Print Network [OSTI]

    Bonaiti, G.; Fipps, G.

    2012-01-01

    BID CCID2 BID CCID2 Database query Telemetry/SCADA ? On/Off ? ? (1) ? Flow ? ? (1) Water Orders ? Water orders ? ? ? Irrigation Volumes ? ? ? Crops ? ? ? Account Balances Water/Money ? ? Status Maps Telemetry.../SCADA ? Alarms ? ? ? On/Off ? ? ? Flow ? ? Water Orders ? Total Irrigation Volumes ? (1) Interactive Map Telemetry/SCADA ? Alarms ? (1) ? On/Off ? ? ? ? Flow ? ? ? ? Find Name ? ? ? Find Type (pump, gate, etc.) ? ? Water...

  9. Recent advances in upgrading large pumps

    SciTech Connect (OSTI)

    Nolt, J.R. Jr.; Russell, G.J. [American Hydro Corp., York, PA (United States)

    1995-12-31

    The benefits of upgrading hydraulic turbines and pump/turbines via the installation of custom designed replacement runners has been well documented in recent years. The increased operating efficiency and capacity, and improved cavitation and operating characteristics of modern replacement runners bears strong testimony to the specialized design an manufacturing techniques developed by turbine manufacturers who specialize in the upgrade business. The integration of computerized design and manufacturing technologies has resulted in the production of turbine and pump/turbine runners with a quality level not approachable with traditional techniques. This same technology can have dramatic results when applied to the upgrade of large pumps. The energy utilized to operate large irrigation, storage and cooling water pumps represents a major cost to the owners of the pumps. The operation of a 25,000 horsepower pump through one irrigation season represents an energy cost of approximately $4,000,000 per year. An increase in efficiency of 2% could result in an energy cost savings of over $100,000 per year. Pump impellers are subject to cavitation and erosion damage which reduces pump efficiency and capacity and may require costly maintenance and repairs. When designed and manufactured using modern computerized methods, an upgraded impeller can operate cavitation free at higher capacities and efficiencies than the original design. The costs of pump operation and maintenance can be substantially reduced by the replacement of the impellers with impellers of modern, custom design.

  10. Economics of Irrigation Systems 

    E-Print Network [OSTI]

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

    2002-01-11

    ) on peanuts. Background photo: mid-elevation spray application (MESA) center pivot, single head. Opposite page: Subsurface drip irrigation system diagram. Back cover inset: Low energy precision application (LEPA) center pivot on peanut. Economics of Irrigation...) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Mid-elevation spray application (MESA) center pivot . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Low elevation spray application (LESA) center pivot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Low energy precision...

  11. 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

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

    E-Print Network [OSTI]

    Molla, Saiful Islam

    1997-01-01

    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...

  13. Precision Irrigators Network 

    E-Print Network [OSTI]

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

    2007-01-01

    conservation including an "Agricultural Irrigation Water Use Management" BMPs section. The full TWDB Report 362 can be found at: http://www.twdb.state.tx.us/assistance/conservation/consindex.asp. DSS include the Texas High Plains Evapotranspiration Network...

  14. Aalborg Universitet Optimal Scheduling and Control of a Multi-Pump Boosting System

    E-Print Network [OSTI]

    Yang, Zhenyu

    . INTRODUCTION Pumps have been widely used in our daily life and work, such as for irrigation, water supply, airAalborg Universitet Optimal Scheduling and Control of a Multi-Pump Boosting System Yang, Zhenyu version (APA): Yang, Z., & Børsting, H. (2010). Optimal Scheduling and Control of a Multi-Pump Boosting

  15. 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...

  16. Sustainability and Horticulture

    E-Print Network [OSTI]

    Weiblen, George D

    Pathogens #12;Sustainability Issues Energy · Tractors · Wind machines · Pumps · Trucking · Fruit storage, depending on assumptions, conditions (e.g., energy, irrigation) #12;Many Dimensions of Sustainable Ag Courtesy: Food Alliance #12;Pest management successes ­ IPM, biocontrol, reduced risk products Apple

  17. Windpowered irrigation system for small farm applications

    SciTech Connect (OSTI)

    England, B.

    1982-01-01

    The overall purpose of the project was to conserve water on a small-scale truck patch vegetable gardening operation. The main thrust centered on improving water usage in the already-existing windmill/storage tank/house/farm pond setup. Most of the funds were spent on a trickle (drip) irrigation system linked into the existing wetup. Other areas improved were the farm pond itself, backup pumping for windmill and farm pond, and greywater reclamation. In spite of problems which had to be restudied and corrected, the project was an overall success both in terms of results and budget.

  18. Sensitivity analysis of conservation opportunities in the irrigated agriculture sector of the Pacific Northwest

    SciTech Connect (OSTI)

    Harrer, B.J.

    1985-07-01

    This report summarizes the results of a sensitivity analysis of the cost effectiveness and energy-savings potential of conservation measures in the irrigation sector of the Pacific Northwest. This study examines the sensitivity of estimates of the cost effectiveness and energy-savings potential of conservation measures in the irrigation sector generated in a previous study (Harrer et al. 1985c) to changes in various types of input data parameters: reductions in purchase, installation and operating/maintenance costs for irrigation-sector conservation measures. Increases in the amounts of irrigation pumping head savings that would result from the use of the measures were also implemented in the sensitivity analysis. The assumptions used in the sensitivity analysis cause the analysis to represent a ''best-case'' scenario for the amount of energy that can potentially be saved through the implementation of irrigation-sector conservation measures in the Pacific Northwest and the costs per kWh saved for obtaining these savings. Under these ''best-case'' assumptions, it is estimated that approximately 207 average megawatts of electricity can potentially be saved by the year 2003 through the implementation of low-pressure irrigation, pump fittings redesign, increases in mainline size, and improved irrigation scheduling on new and existing irrigated acres. The majority of these savings (70%) can be obtained for a cost of 20 mills per kWh saved or less.

  19. Irrigation Water Quality Salinity Management

    E-Print Network [OSTI]

    and industrial waste water can impact water quality. In most irrigation situations, the primary water qual- ity

  20. Shallow seismic AVO variations related to partial water saturation during a pumping test

    E-Print Network [OSTI]

    Sloan, Steven D.; Tsoflias, Georgios P.; Steeples, Don W.

    2007-11-27

    High-resolution shallow seismic reflection experiments were conducted during and after a pumping test of an agricultural irrigation well to image the cone of depression. Although variations in the reflection time from the ...

  1. Pump Selection Considerations

    SciTech Connect (OSTI)

    Not Available

    2005-10-01

    BestPractices Program tip sheet discussing pumping system efficiency with pumping selection considerations.

  2. Irrigation Water Quality 

    E-Print Network [OSTI]

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

    2002-04-11

    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...

  3. Electrokinetic pump

    DOE Patents [OSTI]

    Patel, Kamlesh D. (Dublin, CA)

    2007-11-20

    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.

  4. Demonstration of the Rapid Assessment Tool: Analysis of Water Supply Conditions in the Harlingen Irrigation District 

    E-Print Network [OSTI]

    Leigh, E.; Fipps, G.

    2008-01-01

    furrow irrigation. The procedures used are as follows: (1) District personnel (primarily the canal riders) and DMS Team rate the head conditions of canal segments and pump stations within the district. Segments are evaluated by the criteria...=ISO-8859-1 TR-337 2008 Demonstration of the Rapid Assessment Tool: Analysis of Water Supply Conditions in the Harlingen Irrigation District By: Eric Leigh, Extension Associate, Biological...

  5. Costs and Returns of Irrigated Peanut Production, West Cross Timbers, 1953-57. 

    E-Print Network [OSTI]

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

    1958-01-01

    LIBRARY A 6. M COLLEGE OF TEXAS COLLEGE STATION, TWS Costs and Returns of Irrigated Peanut Production, West Gross Timbers, 1 953-57 T. '. in cooperation with the UNITED STATES DEPARTMENT OF AGRICULTURE - TEXAS AGRICULTURAL EXPERIMENT STATION R. D... peanuts. Special handling techniques are needed to accumulate a water supply and to dis- tribute water over the deep sandy soils where pea- nuts are grown. Thus pumping, storage and dis- tribution facilities are standard equipment for irrigation...

  6. JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING / MARCH/APRIL 2000 / 125 SOLUTION FOR A STREAM DEPLETION PROBLEM

    E-Print Network [OSTI]

    Chahar, B. R.

    JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING / MARCH/APRIL 2000 / 125 SOLUTION FOR A STREAM contribution in the pumped water is important to ascertain the quality and quantity of the water that may recharge and found the stream contribution through a chemical composition test of pumped water. Glover

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

    SciTech Connect (OSTI)

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

    2012-08-01

    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.

  8. Electrokinetic pump

    DOE Patents [OSTI]

    Hencken, Kenneth R.; Sartor, George B.

    2004-08-03

    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.

  9. Dairy Manure Handling Systems and Equipment. 

    E-Print Network [OSTI]

    Sweeten, John M.

    1983-01-01

    Equipment Type System Tank Wagon, Surface spread' Tank Wagon , Surface spread' Tank Wagon, Soil injection' Irrigation , Stationary gun Irrigation , Traveling gun Irrigation, Traveling gun Nominal capacity 1,500 gal. 3,000 gal. 3,000 gal... wagon and 2000 It. haul distance labor. The total cost of pump, irrigation pipe, and traveling gun sprinkler is similar to the cost of a tank wagon system excluding the power unit (tractor) . Direct slurry irrigation systems can serve the dual...

  10. 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...

  11. Well pump

    DOE Patents [OSTI]

    Ames, Kenneth R. (Pasco, WA); Doesburg, James M. (Chicago, IL)

    1987-01-01

    A well pump includes a piston and an inlet and/or outlet valve assembly of special structure. Each is formed of a body of organic polymer, preferably PTFE. Each includes a cavity in its upper portion and at least one passage leading from the cavity to the bottom of the block. A screen covers each cavity and a valve disk covers each screen. Flexible sealing flanges extend upwardly and downwardly from the periphery of the piston block. The outlet valve block has a sliding block and sealing fit with the piston rod.

  12. Turlock Irrigation District- PV Rebate

    Office of Energy Efficiency and Renewable Energy (EERE)

    Turlock Irrigation District (TID) offers an incentive program to their customers who install solar photovoltaic (PV) systems. In keeping with the terms of the California Solar Initiative, the inc...

  13. Maintaining Subsurface Drip Irrigation Systems 

    E-Print Network [OSTI]

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

    2004-09-07

    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...

  14. 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.

    2004-11-01

    An optical parametric oscillator is tuned to the resonance wavelength of the etalon in an optical pumping injection cavity (OPIC) laser with a type-II "W" active region, thereby minimizing the threshold pump intensity and maximizing the output slope...

  15. Winding for linear pump

    DOE Patents [OSTI]

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

    1989-08-22

    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.

  16. Pump Selection Considerations Pumping System Tip Sheet - #2

    SciTech Connect (OSTI)

    None

    2005-10-01

    BestPractices Program tip sheet discussing pumping system efficiency with pumping selection considerations.

  17. Using Renewable Energy to Pump Water 

    E-Print Network [OSTI]

    Enciso, J.; Mecke, M.

    2004-01-01

    electricity for small communities. The most comon wind device used is the American farm and ranch windmil (Fig. 1). These windmils are common on the North American Great Plains and acros the Southwest. A windmill consists of: ?A very large fan with 15 to 40... 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 for irrigation. As larger and/or more...

  18. Multiple pump housing

    DOE Patents [OSTI]

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

    2010-03-23

    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.

  19. Estimation of Hourly Solar Loads on the Surfaces of Moving Refrigerated Tractor Trailers Outfitted with Phase Change Materials (PCMs) for Several Routes across the Continental U.S.

    E-Print Network [OSTI]

    Varadarajan, Krupasagar

    2011-08-31

    The primary objective of this thesis was to calculate solar loads, wind chill temperatures on the surfaces of moving refrigerated tractor trailers outfitted with phase change materials (PCMs) for several routes across the ...

  20. Measuring Transpiration to Regulate Winter Irrigation Rates

    SciTech Connect (OSTI)

    Samuelson, Lisa [Auburn University] [Auburn University

    2006-11-08

    Periodic transpiration (monthly sums) in a young loblolly pine plantation between ages 3 and 6 was measured using thermal dissipation probes. Fertilization and fertilization with irrigation were better than irrigation alone in increasing transpiration of young loblolly pines during winter months, apparently because of increased leaf area in fertilized trees. Irrigation alone did not significantly increase transpiration compared with the non-fertilized and non-irrigated control plots.

  1. Continuously pumping and reactivating gas pump

    DOE Patents [OSTI]

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

    1984-01-01

    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.

  2. Alternative backing up pump for turbomolecular pumps

    DOE Patents [OSTI]

    Myneni, Ganapati Rao (Yorktown, VA)

    2003-04-22

    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.

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

    E-Print Network [OSTI]

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

    1956-01-01

    1949-7.4 13.1 Farms ma!ring capital improvements. 1950-54 82.6 86.9 Additional wells only 19.9 11.9 Distribution systems onlyi 8.1 2.2 Wells and distribution systems' 23.3 7.6 Lowering pumps only 8.1 21.7 Lowering pumps + additional wells 8.1 19....5 Lowering pumps + distribution systems4 4.6 14.2 Lowering pumps + additional wells and distribution systemst 10.5 9.8 10.2 - - 'Number of irrigated farms in sample. 177 (sandy-land area, 86: heavv land area. 91). 'Exclusive of Lynn and Terry counties...

  4. Optimal Quantum Pumps

    E-Print Network [OSTI]

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

    2001-07-12

    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.

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

    SciTech Connect (OSTI)

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

    2013-10-01

    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.

  6. Gas pump with movable gas pumping panels

    DOE Patents [OSTI]

    Osher, John E. (Alamo, CA)

    1984-01-01

    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.

  7. Pumped Storage Hydropower

    Broader source: Energy.gov [DOE]

    In addition to traditional hydropower, pumped-storage hydropower (PSH)—A type of hydropower that works like a battery, pumping water from a lower reservoir to an upper reservoir for storage and...

  8. Rotary magnetic heat pump

    DOE Patents [OSTI]

    Kirol, L.D.

    1987-02-11

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

  9. Rotary magnetic heat pump

    DOE Patents [OSTI]

    Kirol, Lance D. (Shelly, ID)

    1988-01-01

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

  10. Salinity Control in Irrigation Agriculture. 

    E-Print Network [OSTI]

    Lyerly, Paul J.; Longenecker, Donald E.

    1962-01-01

    these analyses as a basis for planning management prac- tices . TEST-DON'T GUESS . Apply water uniformly by using a properly de- signed irrigation system and by leveling where necessary . Apply enough water for the crop plus enough to keep salt leached to a... tolerant to your salt conditions . Plant good seed under optimum moisture and temperature conditions . Fertilize to replace nutrients lost by leaching and to maintain adequate fertility . Use soil-improving grasses or legumes to main- tain good soil...

  11. Liquid metal electric pump

    DOE Patents [OSTI]

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

    1992-01-14

    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.

  12. 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.

    1980-01-01

    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 ...

  13. Can irrigation with municipal wastewater conserve energy?

    E-Print Network [OSTI]

    Coats, W J

    2014-01-01

    1 to 12 inches). Water conservation and energy costs wereor less energy than importing fresh water for irrigation? Inof energy compared with importing fresh water. However,

  14. The Indian solar pumping experience and commercialization initiatives

    SciTech Connect (OSTI)

    Bakthavatsalam, V.; Hart, T.J.; Parthan, B. [Indian Renewable Energy Development Agency Ltd., New Delhi (India)

    1997-12-31

    It is relatively easy to find a good agricultural location with water resources, however, availability of the necessary power for lifting and distribution of water is more of a constraint. For thousands of years human muscle power and draught animals have been used and still continue to be used in many parts of the world; the mechanized techniques for pumping of water which are becoming increasingly important to meet irrigation power requirements. Here, the range of available energy options is of decisive importance in the choice of a suitable pump. The paper presents the initiatives and measures to better understand and adapt solar pumping technology to the agricultural environment in India; results of experience and achievements to date.

  15. 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.

    1982-01-01

    Trickle irrigation is the most efficient method of irrigating peach orchards in Texas. With a trickle irrigation system, a producer may make full use of a limited or low-volume water supply to apply precise amounts of water ...

  16. An Overview of Operational Characteristics of Selected Irrigation Districts in the Texas Lower Rio Grande Valley: Delta Lake Irrigation District 

    E-Print Network [OSTI]

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

    2007-01-01

    to the topography, water-delivery infrastructure system, past financial decisions, and population demographics and clientele base of each irrigation district. Delta Lake Irrigation District (DLID) is one of the 29 irrigation districts in the Valley. This study...

  17. Irrigation Systems for Forage Crops. 

    E-Print Network [OSTI]

    Henggeler, Joseph C.

    1988-01-01

    -75 (used) lar smooth Center Pivot 150-250 Med.- .05-1.5 Square 20 8-10 Clear 01 Yes Yes 55-95 (used) Med. High obstruction Big Gun, 100-200 Very High .5-1 .5 Any shape 20 No limit Reasonably Yes Yes 60-70 hand-move smooth Big Gun, 110-220 Very High ,2... be the best system to choose. Big-gun sprinklers. Big-gun irrigation systems util ize high water pressure to spray water great distances. The end result is that the initial investment is generally low, but the operating costs will be very high which can...

  18. Submersible sodium pump

    DOE Patents [OSTI]

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

    1989-11-21

    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.

  19. Geothermal Heat Pumps

    Broader source: Energy.gov [DOE]

    Geothermal heat pumps are expensive to install but pay for themselves over time in reduced heating and cooling costs. Find out if one is right for your home.

  20. Water Reduction Methods for Strawberry Irrigation

    E-Print Network [OSTI]

    Pasternack, Gregory B.

    Water Reduction Methods for Strawberry Irrigation Thomas Moore Raya Nedelcheva Joseph Vu Tony Mai #12;Abstract We took a look at the irrigation methods of strawberry farmers in the Pajaro Valley and ways that they could reduce the amount of water that it takes to produce their strawberries. In many

  1. Well-pump alignment system

    DOE Patents [OSTI]

    Drumheller, Douglas S. (Cedar Crest, NM)

    1998-01-01

    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.

  2. Flow pumping system for physiological waveforms

    E-Print Network [OSTI]

    Tsai, William; Sava?, Ömer

    2010-01-01

    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

  3. Pump apparatus including deconsolidator

    DOE Patents [OSTI]

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

    2014-10-07

    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. Normetex Pump Alternatives Study

    SciTech Connect (OSTI)

    Clark, E.

    2013-04-25

    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.

  6. Behavior of nitrate-nitrogen movement around a pumping high-capacity well: A field example

    SciTech Connect (OSTI)

    Ayers, J.F.; Chen, X.; Gosselin, D.C. [Univ. of Nebraska, Lincoln, NE (United States). Conservation and Survey Div.

    1998-03-01

    This study examines the near-field flow regime influencing the chemical composition of water samples collected form an irrigation well during short pumping periods. Data on the radial and vertical distribution of nitrate-nitrogen (NO{sub 3}-N) and on draw-down were collected from a closely spaced multi-level monitoring well network installed around an irrigation well. Aquifer properties were determined from grain-size analyses performed on samples collected from test holes drilled around the irrigation well and from drawdown data using the method of Neuman (1974). Grain-size characteristics were determined from cumulative distribution curves and used to construct vertical hydraulic conductivity (K) profiles based on frequently used empirical formulas applied to grain-size data for the determination of aquifer properties. Resultant vertical profiles show a general increase in K with depth. Results from the analysis of drawdown curves support the general trend of K determined form the grain-size data, drawdown-based K values, however, were 1.5 to 2 times greater than those determined form the empirical methods. Results from four pump-and-sample experiments at different times during the irrigation season indicate: (1) the distribution of NO{sub 3}-N around the irrigation well is complex and variable over time and space; (2) shapes of concentration-time curves for individual sample points are governed by the initial contaminant distribution, and shapes of concentration-time curves for the pumping well are governed by variables such as well screen position and hydrogeologic properties; (3) irrigation well samples underestimate the highest, as well as the average NO{sub 3}-N concentrations within the aquifer; and (4) a sampling strategy based on the behavioral characteristics of the well as reflected in concentration-time curves can improve the interpretation of water quality data collected from high-capacity wells.

  7. Pressure charged airlift pump

    DOE Patents [OSTI]

    Campbell, Gene K. (Las Vegas, NV)

    1983-01-01

    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.

  8. Irrigation Training Program For Texas Agricultural Producers 

    E-Print Network [OSTI]

    Harris, B.L.

    2010-01-01

    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 ...

  9. Evaluating Water Transfers in Irrigation Districts 

    E-Print Network [OSTI]

    Ghimire, Narishwar

    2013-04-11

    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...

  10. Idaho Power- Irrigation Efficiency Rewards Program

    Broader source: Energy.gov [DOE]

    Idaho Power provides incentives for energy-efficient equipment and design in irrigation systems. Incentives are available for a wide variety of specific equipment types as well as custom projects....

  11. Maintaining Subsurface Drip Irrigation Systems (Spanish) 

    E-Print Network [OSTI]

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

    2004-09-07

    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...

  12. Irrigation Training Program (South Texas Edition) 

    E-Print Network [OSTI]

    Porter, D.

    2008-01-01

    The Irrigation Training Program is a collaborative effort between the Texas Water Resources Institute, a unit of Texas A&M AgriLife; the Texas State Soil and Water Conservation Board; and the United States Department of ...

  13. Irrigation Training Program (North Texas edition) 

    E-Print Network [OSTI]

    Porter, D.

    2008-01-01

    The Irrigation Training Program is a collaborative effort between the Texas Water Resources Institute, a unit of Texas A&M AgriLife; the Texas State Soil and Water Conservation Board; and the United States Department of ...

  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. For 2015,...

  15. Direct nuclear pumped laser

    DOE Patents [OSTI]

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

    1978-01-01

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

  16. Absorption heat pump system

    DOE Patents [OSTI]

    Grossman, G.

    1982-06-16

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

  17. Absorption heat pump system

    DOE Patents [OSTI]

    Grossman, Gershon (Oak Ridge, TN)

    1984-01-01

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

  18. Variable Frequency Pump Drives 

    E-Print Network [OSTI]

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

    1986-01-01

    variable flow operation, Fig. 2 variable system head, the objective of the latter being to maintain pump flow within an optimum range while accommodating a wide variation in system head. VARYING OPERATING CAPACITY OPERATING CAPACITY? N, RANGE HEAD...-rotor motors and variable speed devices have slip losses that significantly reduce the savings that accrue by operating pumps at variable speed. Steam turbine drives may not always be the most practical or economic solution. The variable frequency...

  19. Vacuum Basics & PumpsVacuum Basics & PumpsVacuum Basics & PumpsVacuum Basics & Pumps Ref: CLC notes (JHU)

    E-Print Network [OSTI]

    Liu, Kai

    Vacuum Basics & PumpsVacuum Basics & PumpsVacuum Basics & PumpsVacuum Basics & Pumps Ref: CLC notes (JHU) Some graphs courtesy of KJLesker, Edwards, Veeco #12;I. VacuumI. Vacuum 1 atm= 760 torr = 1.0132 bar = 1.013x105 Pa = 14.7 psi Rough Vacuum (RV) 1 torr ­ 760 torrg ( ) Medium Vacuum (MV) 10-5 torr

  20. 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

  1. Hydraulic analysis of reciprocating pumps

    SciTech Connect (OSTI)

    Miller, J.D.; Miller, .E. [White Rock Engineering, Inc., Dallas, TX (United States)

    1994-12-31

    A general discussion is given of the factors affecting reciprocating pump hydraulics and methods of reducing the magnitude of the hydraulic pressure disturbances on the pump and the system. Pump type, speed, design, pump valves, suction conditions, and fluid being pumped affect volumetric efficiency and magnitude of hydraulic pressure disturbances. Total Cylinder Pressure (TCP) as a method of specifying minimum suction operating pressure versus Net Positive Suction Head required (NPSHR) is discussed. Diagnostic method of analyzing reciprocating pump performance is presented along with methods of controlling the hydraulic pressure disturbances with pulsation control devices. A review of types of pump pulsation dampeners is presented.

  2. Well-pump alignment system

    DOE Patents [OSTI]

    Drumheller, D.S.

    1998-10-20

    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.

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

    E-Print Network [OSTI]

    Ritschard, R.L.

    2011-01-01

    Well efficiency Pump maintenance 4-7 years 20 nOI; probablyenergy savings for pump maintenance. to formulate moreEfficiency Pump Efficiency & Maintenance. & Maintenance. -v-

  4. Fluid pumping apparatus

    DOE Patents [OSTI]

    West, Phillip B. (Idaho Falls, ID)

    2006-01-17

    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.

  5. Mechanical Compression Heat Pumps 

    E-Print Network [OSTI]

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

    1986-01-01

    of the compressors which constitute the heart and soul of the system. It will also provide a quick survey of the available types of compressors for heat pumping and some of the industrial processes where simultaneous heating and cooling proceed along parallel..., the real challenge comes process environment, or even for comfort HEAT PUMP APPLICATIONS INPU~ AND OUTPUT UTIUnES (HEAT SOUlCE) (ME0U.4) (API't1CATION) CoofIng, Dehumldilication. L.- -J ~Ing. Hot ...,tolel SIJr-lpIy Chilled ....,oter. Hoi waler...

  6. Reactor coolant pump flywheel

    DOE Patents [OSTI]

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

    2013-11-26

    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.

  7. Molecular heat pump

    E-Print Network [OSTI]

    Dvira Segal; Abraham Nitzan

    2005-10-11

    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.

  8. Measuring axial pump thrust

    DOE Patents [OSTI]

    Suchoza, B.P.; Becse, I.

    1988-11-08

    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.

  9. Measuring axial pump thrust

    DOE Patents [OSTI]

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

    1988-01-01

    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.

  10. Velocity pump reaction turbine

    DOE Patents [OSTI]

    House, Palmer A. (Walnut Creek, CA)

    1984-01-01

    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.

  11. Velocity pump reaction turbine

    DOE Patents [OSTI]

    House, Palmer A. (Walnut Creek, CA)

    1982-01-01

    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.

  12. Acoustical heat pumping engine

    DOE Patents [OSTI]

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

    1983-08-16

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

  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)

    1983-08-16

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

  14. Fusion reactor pumped laser

    DOE Patents [OSTI]

    Jassby, Daniel L. (Princeton, NJ)

    1988-01-01

    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.

  15. Optimize Parallel Pumping Systems: Industrial Technologies Program...

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

    a constant rate when these pumps approach no-flow or shutoff head. Some efficient, high-headlow-capacity, centrifugal pumps used in process industries have "drooping" pump...

  16. The sequestration efficiency of the biological pump

    E-Print Network [OSTI]

    DeVries, Tim; Primeau, Francois; Deutsch, Curtis

    2012-01-01

    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

  17. A kinematic model for surface irrigation: An extension 

    E-Print Network [OSTI]

    Sherman, Bernard; Singh, Vijay P.

    1982-01-01

    The kinematic model for surface irrigation, reported previously by Sherman and Singh (1978), is extended. Depending upon the duration of irrigation and time variability of infiltration, three cases are distinguished. Explicit solutions are obtained...

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

    E-Print Network [OSTI]

    Flatness-based control of an irrigation canal using SCADA Tarek Rabbani, Simon Munier, David-time irrigation operations using a supervision, control, and data acquisition (SCADA) system with automatic

  19. 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; Gao, Zhiming; Fu, Joshua S.; Calcagno, Jimmy; Yun, Jeongran

    2014-01-01

    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.

  20. Geothermal Heat Pump Basics

    Broader source: Energy.gov [DOE]

    Geothermal heat pumps use the constant temperature of the earth as an exchange medium for heat. Although many parts of the country experience seasonal temperature extremes—from scorching heat in the summer to sub-zero cold in the winter—the ground a few feet below the earth's surface remains at a relatively constant temperature.

  1. Shrouded inducer pump

    DOE Patents [OSTI]

    Meng, S.Y.

    1989-08-08

    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.

  2. Pump and Tank 

    E-Print Network [OSTI]

    Langley

    2009-01-01

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

  3. Explosively pumped laser light

    DOE Patents [OSTI]

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

    1991-01-01

    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.

  4. Fuel Pumping System And Method

    DOE Patents [OSTI]

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

    2005-12-13

    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.

  5. Fuel pumping system and method

    DOE Patents [OSTI]

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

    2006-12-19

    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.

  6. Irrigation in Support of Research Project: Seismic Absorption and Modulus Measurement

    SciTech Connect (OSTI)

    Roth, Robert, L.; Sheedy, Michael, D.; Thacker, Vince

    2006-03-09

    The irrigation site located at the University of Arizona Maricopa Agricultural Center was designed to support controlled irrigation through the use of evenly spaced drip tubing under a heavy black plastic tarp. Soil solution samplers (lysimeters) are placed at specific locations to collect water from 1.5 meters, 3.0 meters and 10 meters from the soil surface. Suction provided by a vacuum pump was applied to the lysimeters for three hours prior to collection. After this time, the soil solution, if any was collected and placed into 20 ml HDPE scintillation vials and stored at -15 C for later analysis. These samples were analyzed for pH with a Ross Sure Flow Combination Electrode. Electrical conductivity for each sample was measured with the use of an Accumet Conductivity Cell. Both electrodes were connected to an Accumet Model 50 pH/ion/conductivity meter. High Performance Liquid Chromatography was employed in an attempt to determine the amount of Biosurfactant present in each sample. Our HPLC equipment includes a 5mm x 15mm CIS chromatography column, Waters 2487 detector, 510 pump, and WISP 710 Auto Injector. Millennium software was used to integrate data from these analyses.

  7. 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 ...

  8. Guide to Geothermal Heat Pumps

    SciTech Connect (OSTI)

    None

    2011-02-01

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

  9. Ethanoltank TurboMolecularPump

    E-Print Network [OSTI]

    Maruyama, Shigeo

    CCVD at low pressure (less than 0.1 Pa). The advanced generation method based on the SWNT growthEthanoltank Oil pump TurboMolecularPump Ion gauge Leak valve Silicon heater Scroll pump Gate valve. Shiokawa et al. [2] have reported that SWNTs can be grown at low temperature for nanodevices by performing

  10. Confocal Heat Pump Mike Lampton

    E-Print Network [OSTI]

    California at Berkeley, University of

    Confocal Heat Pump Mike Lampton Space Sciences Lab, UC Berkeley Originally posted 1 April 2014 heat pump since it is based on ideas stemming from confocal ellipsoids. 2 Confocal Ellipsoids I begin symmetrical. There are infinitely many other possibilities. Each is reciprocal. 3 Confocal Heat Pump

  11. 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

  12. Heat Pump Water Heaters | Department of Energy

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

    Heat Pump Water Heaters Heat Pump Water Heaters May 4, 2012 - 5:21pm Addthis A diagram of a heat pump water heater. A diagram of a heat pump water heater. What does this mean for...

  13. Improving pumping system efficiency at coal plants

    SciTech Connect (OSTI)

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

    2009-03-15

    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.

  14. Absorption Heat Pumps | Department of Energy

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

    Absorption Heat Pumps Absorption Heat Pumps June 24, 2012 - 2:11pm Addthis Absorption heat pumps are essentially air-source heat pumps driven not by electricity, but by a heat...

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

    E-Print Network [OSTI]

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

    1980-01-01

    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 ...

  16. 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.

  17. Select an Energy-Efficient Centrifugal Pump

    SciTech Connect (OSTI)

    Not Available

    2005-10-01

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

  18. The conjunctive use of saline irrigation water on deficit-irrigated cotton 

    E-Print Network [OSTI]

    Henggeler, Joseph Charles

    2005-02-17

    ............................................................... 132 52 Water analysis for T1 and T2 waters ............................................................. 147 53 Existing cations in Well #5, plus total and additional required for T3 and T4 waters... at deficit amounts on cotton was conducted in Pecos, Texas on a Hoban silty clay loam. Treatments were four irrigation water qualities, conjunctively applied. Initial irrigation was with water having an electrical conductivity (ECIW) of 4.5 dSm-1...

  19. SHINE Vacuum Pump Test Verification

    SciTech Connect (OSTI)

    Morgan, Gregg A; Peters, Brent

    2013-09-30

    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.

  20. Ground water provides drinking water, irrigation for

    E-Print Network [OSTI]

    Saldin, Dilano

    they join tributaries to the Mississippi River. · The deep ground water divide is the underground boundary Deep ground water divide Racine Kenosha Walworth Waukesha Washington Ozaukee Milwaukee LAKE MICHIGANGround water provides drinking water, irrigation for crops and water for indus- tries. It is also

  1. Integrated heat pump system

    SciTech Connect (OSTI)

    Reedy, W.R.

    1988-03-01

    An integrated heat pump and hot water system is described that includes: a heat pump having an indoor heat exchanger and an outdoor heat exchanger that are selectively connected to the suction line and the discharge line respectively of a compressor by a flow reversing means, and to each other by a liquid line having an expansion device mounted therein, whereby heating and cooling is provided to an indoor comfort zone by cycling the flow reversing means, a refrigerant to water heat exchanger having a hot water flow circuit in heat transfer relation with a first refrigerant condensing circuit and a second refrigerant evaporating circuit, a connection mounted in the liquid between the indoor heat exchanger and the expansion device, control means for regulating the flow of refrigerant through the refrigerant to water heat exchanger to selectively transfer heat into and out of the hot water flow circuit.

  2. Multiple source heat pump

    DOE Patents [OSTI]

    Ecker, Amir L. (Duncanville, TX)

    1983-01-01

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

  3. Fusion reactor pumped laser

    DOE Patents [OSTI]

    Jassby, D.L.

    1987-09-04

    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.

  4. 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...

  5. Chemical heat pump

    DOE Patents [OSTI]

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

    1980-01-01

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

  6. Absorption heat pump system

    DOE Patents [OSTI]

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

    1984-01-01

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

  7. Heat pump apparatus

    DOE Patents [OSTI]

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

    1983-01-01

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

  8. Chemical heat pump

    DOE Patents [OSTI]

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

    1984-01-01

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

  9. Chemical heat pump

    DOE Patents [OSTI]

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

    1984-01-01

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

  10. Chemical heat pump

    DOE Patents [OSTI]

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

    1984-01-01

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

  11. Chemical heat pump

    DOE Patents [OSTI]

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

    1981-01-01

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

  12. III. Vacuum PumpsIII. Vacuum Pumps Gas transfer

    E-Print Network [OSTI]

    Liu, Kai

    III. Vacuum PumpsIII. Vacuum Pumps Mechanism Gas transfer Gas capture FunctionFunction Roughing, Screw High vacuum Oil diffusion, Turbomolecular, Cryo, Ion Auxiliary Titanium Sublimation, LN2 Liu, UCD aggressive gases Liu, UCD Phy250-1, 2011, NanoFab22 May handle aggressive gases #12;IIIIII--B. High Vacuum

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

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

    Pump 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...

  14. 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.; Bryan, Wes; Kelly, James

    2013-07-01

    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)

  15. Test for Pumping System Efficiency | Department of Energy

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

    Test for Pumping System Efficiency Test for Pumping System Efficiency This tip sheet discusses important considerations when conducting pumping system efficiency tests. PUMPING...

  16. Select an Energy-Efficient Centrifugal Pump - Pumping System Tip Sheet #3

    SciTech Connect (OSTI)

    2005-10-01

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

  17. 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.

  18. Cotton Irrigation in the Lower Rio Grande Valley. 

    E-Print Network [OSTI]

    Bloodworth, M. E.; Cowley, W. R.; Burleson, C. A.; Gerard, C. J.

    1958-01-01

    - , atures were found to occur between 12:00 noon and 2:00 p. m. each day, with the coolest period from 4 :00 to 6 :00 a. m. Irrigation water was ef- fective in keeping the soil temperature well be- low pre-irrigational level for 4 days. The cool- effect... often are over-irrigated I while young and under-irrigated during critical periods of high moisture demand. Daily evapo-transpiration by cotton plants as influenced by time throughout the growing sea- son, planting dates and moisture levels...

  19. An Economic Evaluation of Greenbelt Irrigation with Effluent Water

    E-Print Network [OSTI]

    Wood, William W Jr; Youngner, Victor B; Benoit, Gary B; Hurd, Dale R

    1980-01-01

    for wastewater treatment systems ranging from primary sedi­wastewater treatment system u t i l i z i n g irrigation primary and activated sludge treatment

  20. 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...

  1. temperature heat pumps applied to

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    Very high- temperature heat pumps applied to energy efficiency in industry Application of industrial heat pumps June 21 th 2012 J-L Peureux, E. Sapora, D. Bobelin EDF R&D #12;Achema 2012 Frankfurt There are thermal requirements in the industrial plant Treq Heat exchanger = Cons ~ 0 CO2 ~ -100% Treq

  2. Dual source heat pump

    DOE Patents [OSTI]

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

    1982-01-01

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

  3. Solar Pumped Laser Microthruster

    SciTech Connect (OSTI)

    Rubenchik, A. M.; Beach, R.; Dawson, J.; Siders, C. W.

    2010-10-08

    The development of microsatellites requires the development of engines to modify their orbit. It is natural to use solar energy to drive such engines. For an unlimited energy source the optimal thruster must use a minimal amount of expendable material to minimize launch costs. This requires the ejected material to have the maximal velocity and, hence, the ejected atoms must be as light as possible and be ejected by as high an energy density source as possible. Such a propulsion can be induced by pulses from an ultra-short laser. The ultra-short laser provides the high-energy concentration and high-ejected velocity. We suggest a microthruster system comprised of an inflatable solar concentrator, a solar panel, and a diode-pumped fiber laser. We will describe the system design and give weight estimates.

  4. From classical pumps of water to quantum pumping of electrons in closed devices

    E-Print Network [OSTI]

    Cohen, Doron

    From classical pumps of water to quantum pumping of electrons in closed devices Doron Cohen, Ben to pumping DC, Kottos, Schanz (cond-mat 2004) - pumping on networks Sela, DC (in preperation) - pumping reservoirs) · one of the above interacting with a bath Questions: Transport? Dissipation? #12;Simple pumping

  5. 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.

    2004-01-01

    – George Burlay purchased 1,000 acres 9 miles east of Brownsville called the Rio Grande Plantation. He began the first large-scale irrigation operation and successfully grew sugarcane. 1879 – Celestina Jagou purchased the former EAA 640 acres... 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. Sturdivant Ronald D. Lacewell Texas Water...

  6. Deficit Irrigation Programs for Water Conservation in the Management of Bermudagrass Fairways in Texas 

    E-Print Network [OSTI]

    Hejl, Reagan Wesley

    2014-04-29

    in irrigation allocations, but information is limited regarding critical levels needed for maintaining adequate turf quality, persistence, and recovery from divots and traffic. Furthermore, the effects of irrigation water quality on minimal irrigation...

  7. Heat Pump Water Heaters | Department of Energy

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

    A diagram of a heat pump water heater. A diagram of a heat pump water heater. What does this mean for me? Heat pump water heaters can be two to three times more energy efficient...

  8. Development Requirements for Advanced Industrial Heat Pumps 

    E-Print Network [OSTI]

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

    1985-01-01

    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...

  9. Tips: Heat Pumps | Department of Energy

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

    Heat Pumps Tips: Heat Pumps July 20, 2014 - 5:48pm Addthis Heat pumps can be a cost-effective choice in moderate climates, especially if you heat your home with electricity. Heat...

  10. Irrigation Depletions 1928-1989 : 1990 Level of Irrigation, Snake Yakima and Deschutes River Basins.

    SciTech Connect (OSTI)

    United States. Bonneville Power Administation; A.G. Crook Company

    1993-07-01

    The vast amount of irrigation in relation to the available water and extensive system of reservoirs located in the Snake River Basin above Brownlee reservoir precludes this area from using methods such as Blaney-Criddle for estimating irrigation depletions. Also the hydrology, irrigation growth patterns, and water supply problems are unique and complex. Therefore regulation studies were utilized to reflect the net effect on streamflow of the changes in irrigated acreage in terms of corresponding changes in storage regulation and in the amount of water depleted and diverted from and returned to the river system. The regulation study for 1990 conditions was conducted by the Idaho Department of Water Resources. The end product of the basin simulation is 61 years of regulated flows at various points in the river system that are based on 1990 conditions. Data used by the Idaho Department of Water Resources is presented in this section and includes natural gains to the river system and diversions from the river system based on a 1990 level of development and operation criteria. Additional information can be obtained for an Idaho Department of Water Resources Open-File Report ``Stream Flows in the Snake River Basin 1989 Conditions of Use and Management`` dated June 1991. Similar considerations apply to the Yakima and Deschutes river basins.

  11. Flume construction on King Hill irrigation project

    E-Print Network [OSTI]

    Ward, Walter

    1921-01-01

    to two hundred feet in elevation above the flume bench, making the total lift ranging from 360 to 500 feet. This pumping plant provided sufficient water for all purposes, and was-distributed by gravity from the tanks to cainps, corrals, mixers... to two hundred feet in elevation above the flume bench, making the total lift ranging from 360 to 500 feet. This pumping plant provided sufficient water for all purposes, and was-distributed by gravity from the tanks to cainps, corrals, mixers...

  12. 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

    2007-04-30

    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.

  13. Tomatoes: Irrigation Spacing Blossom-End Rot. 

    E-Print Network [OSTI]

    Gerard, C. J.; Hipp, B. W.; Cowley, W. R.

    1971-01-01

    produced significantly less than tomatoes which were 6 to 12 inches apart. From the relationship between incidence of bb 1 som-end rot (BER) and moisture stress, it was deter - mined that spring-grown pear tomatoes should ttl irrigated 7 to 15 days... after initiation ol first blooir to keep BER incidence below 5 percent on medium. I textured soils. In contrast, spring-grown pear tom. toes on Harlingen clay soils had high BER inridena even under high soil moisture conrlitions because i. good...

  14. Modesto 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History ViewMayo, Maryland: Energy ResourcesDec(Pritchett, 2004) | Open EnergyModelos yModesto Irrigation

  15. Energy Efficiency Indicators Methodology Booklet

    E-Print Network [OSTI]

    Sathaye, Jayant

    2010-01-01

    of farming equipment, irrigation pumps, and the use ofheating system Irrigation Fishing Pumps Fishing Boats

  16. Assessing Urban Residential Irrigation Performance Using a Water Budget Approach 

    E-Print Network [OSTI]

    Lewis, Alan Christopher

    2014-12-16

    Systems HOA Homeowners Association IR Irrigation Requirement SFR Single-Family Residential TWDB Texas Water Development Board TWRI Texas Water Resources Institute USGS United States Geological Survey vi TABLE OF CONTENTS Page ABSTRACT... ........................................................................................................................ 18 Figure 4. College Station neighborhoods and the number of SFR lots selected for study of irrigation performance ........................................................................................ 19 Figure 5. Close-up of GIS layers...

  17. Stratified random sampling plan for an irrigation customer telephone survey

    SciTech Connect (OSTI)

    Johnston, J.W.; Davis, L.J.

    1986-05-01

    This report describes the procedures used to design and select a sample for a telephone survey of individuals who use electricity in irrigating agricultural cropland in the Pacific Northwest. The survey is intended to gather information on the irrigated agricultural sector that will be useful for conservation assessment, load forecasting, rate design, and other regional power planning activities.

  18. Irrigation and the demand for electricity. Progress report

    SciTech Connect (OSTI)

    Maddigan, R. J.; Chern, W. S.; Gallagher, C. A.

    1980-03-01

    In order to anticipate the need for generating capacity, utility planners must estimate the future growth in electricity demand. The need for demand forecasts is no less important for the nation's Rural Electric Cooperatives (RECs) than it is for the investor-owned utilities. The RECs serve an historically agrarian region; therefore, the irrigation sector accounts for a significant portion of the western RECs' total demand. A model is developed of the RECs' demand for electricity used in irrigation. The model is a simultaneous equation system which focuses on both the short-run utilization of electricity in irrigation and the long-run determination of the number of irrigators using electricity. Irrigation demand is described by a set of equations in which the quantity of electricity demanded, the average electricity price, the number of irrigation customers, and the ratio of electricity to total energy used for irrigation are endogenous. The structural equations are estimated using pooled state-level data for the period 1961-1977. In light of the model's results, the impact of changes in relative energy prices on irrigation can be examined.

  19. 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.

    1981-01-01

    in sandy soils (such as in the Nebraska Sand Hills) with traveling or outer pivot sprinkler systems is a classic example of high frequency irrigation dictated by a limited water holding capacity. Another widespread use of high frequency irrigation is found...

  20. Smarter irrigation Kati Migliaccio, PhD PE

    E-Print Network [OSTI]

    Migliaccio, Kati White

    and rainfall sensors · 16 to 83% water savings with smart controllers compared to no rain sensor depending and drainage ­ Florida soils typically have low water holding capacity (or ability to store water) · Need% more water is used by automated irrigation systems than non-automated systems for landscape irrigation

  1. Heat Pump Strategies and Payoffs 

    E-Print Network [OSTI]

    Gilbert, J. S.

    1982-01-01

    (Evaporator) Heat Source Heat Pump Turbine Compressor Compressed Vapor Pump IZl:G1 Type IV - Rankine Cycle (Waste Heat Driven) Heat Sink (Condenser) Fig. 3 Basic Heat Pump Categories 324 ESL-IE-82-04-66 Proceedings from the Fourth Industrial... payback. 500 450 400 Leas Than G:" ~ 2! 350 2-Vear Payback .a e 300 !. E ~ 250 Simple Waste Heat Boller 200 100 1.-........_-'-_.1.---1"---.1._..&0.._1.---'-_'-__ o 10 20 30 40 50 60 70 80 Heat Removed (%) 82291 Fig. 4 Heat...

  2. System analysis for sucker-rod pumping

    SciTech Connect (OSTI)

    Schmidt, Z.; Doty, D.R.

    1989-05-01

    Pumping free gas in an oil well can significantly decrease the efficiency of a sucker-rod-pumping installation. Pump placement depth and use of a downhole gas/liquid separator (gas anchor) were found to be significant variables in improving the overall efficiency. A procedure is presented that shows when and to what degree the use of a gas anchor improves the efficiency of a sucker-rod pumping system. It was found that at lower pump intake pressures, the gas anchor usually improves efficiency, but at higher pump intake pressures, use of a gas anchor produces no positive effect. Also, elevating the pump to the highest position that still allows proper pump loading was found to reduce the operating costs of a sucker-rod-pumping installation significantly. Finally, a procedure is presented to calculate directly the pump volumetric efficiency and required volumetric pump displacement rate.

  3. Estimates of Savings Achievable from Irrigation Controller

    SciTech Connect (OSTI)

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

    2014-03-28

    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.

  4. Irrigation Resources to Grow Biofuel:Irrigation Resources to Grow Biofuel: A National Overview with Role of

    E-Print Network [OSTI]

    Scott, Christopher

    1 Irrigation Resources to Grow Biofuel:Irrigation Resources to Grow Biofuel: A National Overview about the water and land potentially used forabout the water and land potentially used for biofuel Dry Beans Other small Wheat Barley Pasture Other Crops Other Hay Potatoes Veggies Silage corn Berries

  5. Transverse pumped laser amplifier architecture

    SciTech Connect (OSTI)

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

    2013-07-09

    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.

  6. Geothermal Heat Pump Grant Program

    Broader source: Energy.gov [DOE]

    The definition of geothermal heat pump property does not include swimming pools, hot tubs, or any other energy storage device that has a primary function other than storage. In addition, systems...

  7. 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 ...

  8. Complex Compound Chemical Heat Pumps 

    E-Print Network [OSTI]

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

    1987-01-01

    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. Industrial Heat Pump Design Options 

    E-Print Network [OSTI]

    Gilbert, J. S.

    1985-01-01

    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...

  10. Heat Pumps - Theory and Applications 

    E-Print Network [OSTI]

    Altin, M.

    1982-01-01

    In this paper the thermodynamic viability of heat pumps is evaluated by potential work flux (exergy) analysis. A short description of the exergy (work potential) and other concepts such as 'lost work' needed for exergy analysis are given...

  11. Method for controlling powertrain pumps

    DOE Patents [OSTI]

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

    2013-10-22

    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.

  12. Process Cooling Pumping Systems Analysis 

    E-Print Network [OSTI]

    Sherman, C.

    2008-01-01

    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...

  13. Balanced pressure gerotor fuel pump

    DOE Patents [OSTI]

    Raney, Michael Raymond; Maier, Eugen

    2004-08-03

    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.

  14. Heat Pump Swimming Pool Heaters | Department of Energy

    Office of Environmental Management (EM)

    Heat Pump Swimming Pool Heaters Heat Pump Swimming Pool Heaters May 29, 2012 - 1:49pm Addthis How a heat pump works. How a heat pump works. How They Work Heat pumps use electricity...

  15. Pump control system for windmills

    DOE Patents [OSTI]

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

    1983-01-01

    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.

  16. Laminated electromagnetic pump stator core

    DOE Patents [OSTI]

    Fanning, A.W.

    1995-08-08

    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. 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

  18. 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

  19. 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

  20. ABSORPTION HEAT PUMP IN THE DISTRICT HEATING

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    #12;ABSORPTION HEAT PUMP IN THE DISTRICT HEATING PLANT Dr.sc.ing. Agnese Lickrastina M.Sc. Normunds European Heat Pump Summit 2013, Nuremberg, 15-16.10.2013 · Riga District Heating company · Operation of the DH plant Imanta · Selection of the heat pump/chiller · Operation of the heat pump/chiller · Summary

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

    SciTech Connect (OSTI)

    Hunt, A.; Easley, S.

    2012-05-01

    This measure guideline evaluates potential energy savings by replacing traditional single-speed pool pumps with variable speed pool pumps, and provides 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.

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

    SciTech Connect (OSTI)

    Hunt, A.; Easley, S.

    2012-05-01

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

    E-Print Network [OSTI]

    Lawrence, Ramon

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

  4. Supercharger for Heat Pumps in Cold Climates

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURINGEnergyPlan | Department of EnergySummary: TheUpdateBowl CityTractorSupercharger

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

    E-Print Network [OSTI]

    Leigh, Eric; Fipps, G.

    2008-01-01

    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...

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

    E-Print Network [OSTI]

    Bloodworth, Morris E.

    1959-01-01

    by muddy water, which is PERCENT SAND Figure 4. The percentages of sand (0.05 to 2.0 mm), silt (0.002 to 0.05 mm) and clay (below 0.002 mm) in the basic textural classes. Modified from USDA Handbook 18. To use the chart: (a) determine percentage compo..., 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...

  7. 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nA Guide to Tapping intoandMinimaland(GTO)Get Pumped about Pumped Storage

  8. Variable delivery, fixed displacement pump

    DOE Patents [OSTI]

    Sommars, Mark F. (Sparland, IL)

    2001-01-01

    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.

  9. Estimated Farm Level Benefits of Improved Irrigation Efficiency 

    E-Print Network [OSTI]

    Lee, John G.; Lacewell, Ronald D.; Ellis, John R.; Reneau, Duane R.

    1984-06-10

    of water loss in a crop production system are runoff, percolation, and evaporation. Examples of water conserving techniques include terracing, furrow dams, reduced tillage, and crop rotations. In addition, improved irrigation application techniques can...

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

    E-Print Network [OSTI]

    Swanson, Charles; Fipps, Guy

    2010-01-01

    A smart controller testing facility was established by the Irrigation Technology Center at Texas A&M University in College Station in 2008. A two-year testing program was initiated in order to evaluate smart controller testing methodology needed...

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

    E-Print Network [OSTI]

    Miyamoto, S.

    2002-01-01

    The book describes the performance of pecan trees; water testing; determining how water quality may affect tree growth; improving drainage; selecting an irrigation system, and water conditioning to manage nutrients. It also describes how to estimate...

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

    E-Print Network [OSTI]

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

    1979-01-01

    Agricultural production and associated economic effects of irrigation on the Texas High Plains are seriously threatened by a rapidly declining groundwater supply and a swift upward trend in energy costs. To optimize the ...

  13. Evaluation of pre-packaged agricultural drip irrigation kits

    E-Print Network [OSTI]

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

    2012-01-01

    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. Management reduces E. coli in irrigated pasture runoff

    E-Print Network [OSTI]

    Knox, A. Kate; Tate, Kenneth W.; Dahlgren, Randy A.; Atwill, Edward R.

    2007-01-01

    Irrigation application rate cfs/acre Duration of tailwaterrunoff rate above wetland day cfs/acre Reduction in E. coli= 4) cubic feet per second (cfs) per acre were applied over

  15. Energy savings potential from energy-conserving irrigation systems

    SciTech Connect (OSTI)

    Wilfert, G.L.; Patton, W.P.; Harrer, B.J.; Clark, M.A.

    1982-11-01

    This report systematically compares, within a consistent framework, the technical and economic characteristics of energy-conserving irrigation systems with those of conventional irrigation systems and to determine total energy savings. Levelized annual costs of owning and operating both energy-conserving and conventional irrigation systems have been developed and compared for all 17 states to account for the differences in energy costs and irrigation conditions in each state. Market penetration of energy-conserving systems is assessed for those systems having lower levelized annual costs than conventional systems performing the same function. Annual energy savings were computed by matching the energy savings per system with an assumed maximum market penetration of 100 percent in those markets where the levelized annual costs of energy-conserving systems are lower than the levelized annual costs of conventional systems.

  16. A Hydrodynamic Study of Flow in Irrigation Furrows 

    E-Print Network [OSTI]

    Wilke, O.C.

    1968-01-01

    Equations of motion describing flow in irrigation furrows are derived and presented in characteristic form. Predicted flow profiles obtained from approximate numerical solutions of the equations of motion did not compare well with measured flow...

  17. Optical pumping and xenon NMR

    SciTech Connect (OSTI)

    Raftery, M.D.

    1991-11-01

    Nuclear Magnetic Resonance (NMR) spectroscopy of xenon has become an important tool for investigating a wide variety of materials, especially those with high surface area. The sensitivity of its chemical shift to environment, and its chemical inertness and adsorption properties make xenon a particularly useful NMR probe. This work discusses the application of optical pumping to enhance the sensitivity of xenon NMR experiments, thereby allowing them to be used in the study of systems with lower surface area. A novel method of optically-pumping [sup 129]Xe in low magnetic field below an NMR spectrometer and subsequent transfer of the gas to high magnetic field is described. NMR studies of the highly polarized gas adsorbed onto powdered samples with low to moderate surface areas are now possible. For instance, NMR studies of optically-pumped xenon adsorbed onto polyacrylic acid show that xenon has a large interaction with the surface. By modeling the low temperature data in terms of a sticking probability and the gas phase xenon-xenon interaction, the diffusion coefficient for xenon at the surface of the polymer is determined. The sensitivity enhancement afforded by optical pumping also allows the NMR observation of xenon thin films frozen onto the inner surfaces of different sample cells. The geometry of the thin films results in interesting line shapes that are due to the bulk magnetic susceptibility of xenon. Experiments are also described that combine optical pumping with optical detection for high sensitivity in low magnetic field to observe the quadrupoler evolution of 131 Xe spins at the surface of the pumping cells. In cells with macroscopic asymmetry, a residual quadrupolar interaction causes a splitting in the [sup 131]Xe NMR frequencies in bare Pyrex glass cells and cells with added hydrogen.

  18. Optical pumping and xenon NMR

    SciTech Connect (OSTI)

    Raftery, M.D.

    1991-11-01

    Nuclear Magnetic Resonance (NMR) spectroscopy of xenon has become an important tool for investigating a wide variety of materials, especially those with high surface area. The sensitivity of its chemical shift to environment, and its chemical inertness and adsorption properties make xenon a particularly useful NMR probe. This work discusses the application of optical pumping to enhance the sensitivity of xenon NMR experiments, thereby allowing them to be used in the study of systems with lower surface area. A novel method of optically-pumping {sup 129}Xe in low magnetic field below an NMR spectrometer and subsequent transfer of the gas to high magnetic field is described. NMR studies of the highly polarized gas adsorbed onto powdered samples with low to moderate surface areas are now possible. For instance, NMR studies of optically-pumped xenon adsorbed onto polyacrylic acid show that xenon has a large interaction with the surface. By modeling the low temperature data in terms of a sticking probability and the gas phase xenon-xenon interaction, the diffusion coefficient for xenon at the surface of the polymer is determined. The sensitivity enhancement afforded by optical pumping also allows the NMR observation of xenon thin films frozen onto the inner surfaces of different sample cells. The geometry of the thin films results in interesting line shapes that are due to the bulk magnetic susceptibility of xenon. Experiments are also described that combine optical pumping with optical detection for high sensitivity in low magnetic field to observe the quadrupoler evolution of 131 Xe spins at the surface of the pumping cells. In cells with macroscopic asymmetry, a residual quadrupolar interaction causes a splitting in the {sup 131}Xe NMR frequencies in bare Pyrex glass cells and cells with added hydrogen.

  19. 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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDid you notHeat Pumps Heat Pumps An error occurred. Try watching this video

  20. Peristaltic pumps work in nano scales

    E-Print Network [OSTI]

    Farnoush Farahpour; Mohammad Reza Ejtehadi

    2013-08-05

    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.

  1. Process Integration of Industrial Heat Pumps 

    E-Print Network [OSTI]

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

    1986-01-01

    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 heat pumps. Finally, three ~ample...

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

    E-Print Network [OSTI]

    Miyamoto, S.

    2007-01-01

    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 growers are not convinced that salts are affecting yields, probably because... symptoms of salt-affected trees are difficult to differentiate from those of water-stressed trees. Salt problems usually appear when salinity of water used for irrigation exceeds about 500 mg L -1 , and the orchard consists of clayey soils or has a...

  3. 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...

  4. Pump Systems Matter Mission and Vision | Department of Energy

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

    ionofPumpSystemsMatter.pdf More Documents & Publications Overview of Pump Systems Matter Hydraulic Institute Mission and Vision Course Overview Pump Systems Matter Optimization...

  5. Autonomous observations of the ocean biological carbon pump

    E-Print Network [OSTI]

    Bishop, James K.B.

    2009-01-01

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

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

    E-Print Network [OSTI]

    Franco, Victor

    2011-01-01

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

  7. Mechanism of a proton pump analyzed with computer simulations

    E-Print Network [OSTI]

    Bondar, Ana-Nicoleta; Smith, Jeremy C.; Elstner, Marcus

    2010-01-01

    ARTICLE Mechanism of a proton pump analyzed with computerhow bacteriorhodopsin pumps protons. We emphasize the1 Introduction Proton pumps are remarkable proteins that

  8. Reconfigurable microfluidic pump enabled by opto-electrical-thermal transduction

    E-Print Network [OSTI]

    Takeuchi, M; Takeuchi, M; Hagiwara, M; Haulot, G; Ho, CM

    2013-01-01

    Reconfigurable microfluidic pump enabled by opto-electrical-Reconfigurable microfluidic pump enabled by opto-electrical-of reconfigurable microfluidic pump using optoelectronic

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

    E-Print Network [OSTI]

    Franco, Victor

    2011-01-01

    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

  10. Conduct an In-Plant Pumping System Survey; Industrial Technologies...

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

    Improving Pumping System Performance: A Sourcebook for Industry. Hydraulic Institute-HI is a non- profit industry association for pump and pump system manufacturers; it...

  11. Match Pumps to System Requirements: Industrial Technologies Program...

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

    Improving Pumping System Performance: A Sourcebook for Industry. Hydraulic Institute-HI is a non- profit industry association for pump and pump system manufacturers; it...

  12. Reduce Pumping Costs Through Optimum Pipe Sizing | Department...

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

    Reduce Pumping Costs Through Optimum Pipe Sizing Reduce Pumping Costs Through Optimum Pipe Sizing This tip sheet discusses how to reduce pumping system costs through optimum pipe...

  13. Delivering a low-cost, reliable drip irrigation filtration system for micro-irrigation in developing countries

    E-Print Network [OSTI]

    Greenlee, Alison S.

    The cylindrical filters presently used in drip irrigation systems frequently clog, increasing pressure loss and lowering the flow rate through the filters. This work investigates alternative filtration strategies that ...

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

    SciTech Connect (OSTI)

    Roberts, B.

    2011-07-01

    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.

  15. Electric field divertor plasma pump

    DOE Patents [OSTI]

    Schaffer, Michael J. (San Diego, CA)

    1994-01-01

    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.

  16. Energy 101: Geothermal Heat Pumps

    SciTech Connect (OSTI)

    None

    2011-01-01

    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.

  17. Energy 101: Geothermal Heat Pumps

    ScienceCinema (OSTI)

    None

    2013-05-29

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

  18. Electric field divertor plasma pump

    DOE Patents [OSTI]

    Schaffer, M.J.

    1994-10-04

    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.

  19. Geothermal Heat Pumps | Department of Energy

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

    Geothermal Heat Pumps Geothermal Heat Pumps June 24, 2012 - 5:08pm Addthis An error occurred. Try watching this video on www.youtube.com, or enable JavaScript if it is disabled in...

  20. Heat Pump Systems | Department of Energy

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

    A heat pump can provide an alternative to using your air conditioner. | Photo courtesy of iStockPhotoLordRunar. A heat pump can provide an alternative to using your air...

  1. Heat Pump System Basics | Department of Energy

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

    pumps can provide up to four times the amount of energy they consume. Air-Source Heat Pump Transfers heat between the inside of a building and the outside air. Ductless...

  2. 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)

    1999-01-01

    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.

  3. Heat Pump Clothes Dryer | Department of Energy

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

    Schematics of a heat pump clothes dryer
    Credit: Oak Ridge National Lab Schematics of a heat pump clothes dryer Credit: Oak Ridge National Lab Lead Performer: Oak Ridge...

  4. Industrial Heat Pumps: Where and When 

    E-Print Network [OSTI]

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

    1989-01-01

    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.

  5. 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....

  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.

    1985-01-01

    Many potentially beneficial applications for industrial heat pumps are not being pursued because of confusion regarding both energy savings and economics. Part of this confusion stems from the variety of heat pumps available and the fact...

  7. Pipelining heavy crude oil requires special pumps

    SciTech Connect (OSTI)

    Brennan, J.R. [Imo Industries, Singapore (Singapore)

    1995-10-01

    This paper reviews the use of rotary screw pumps installed at Guatemala`s Xan oil field to help pipeline heavy crudes to their processing facilities. It reviews the special design characteristics and specifications for each of the three pumps. It provides information on the capacities and the materials used in making the pumps. It provides information on cooling systems and on the engines used to power the pumps.

  8. Onsite Wastewater Treatment Systems: Pump Tank 

    E-Print Network [OSTI]

    Lesikar, Bruce J.

    2008-10-23

    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...

  9. Optimal Quantum Pumps J. E. Avron (a)

    E-Print Network [OSTI]

    Voloch, Felipe

    Optimal Quantum Pumps J. E. Avron (a) , A. Elgart (b) , G.M. Graf (c) and L. Sadun (d) (a) Department of Mathematics, University of Texas, Austin Texas 78712, USA Optimal pumps saturate a lower bound on energy dissipation. We give a characterization of optimal pumps in terms of the energy shift matrix

  10. 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

  11. Syringe Pump Factory Acceptance Testing Review

    E-Print Network [OSTI]

    McDonald, Kirk

    Syringe Pump Factory Acceptance Testing Review V.B. Graves MERIT VRVS Meeting April 5, 2006 #12;2VRVS Meeting 5 Apr 2006 Acceptance Testing of Syringe Pump Completed · Factory acceptance testing of syringe pump completed March 30 at Airline Hydraulics Corp (AHC) Bensalem, PA facility · Test plan

  12. Heat pumps in industrial cleaning applications

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    Heat pumps in industrial cleaning applications Achema 2012 - Frankfurt Bjarke Paaske, bjpa to promote heat pumps in industrial cleaning apps. #12;Cleaning plant, drum type Items enter here #12;Washing;Heat pumps in industrial washing applications Bjarke Paaske, bjpa@dti.dk, phone: +45 7220 2037, Energy

  13. 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

  14. Dawdon Mine Water Heat Pump Trial

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

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

  15. 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

    2011-01-01

    stream_source_info The Art of Smart Irrigation.pdf.txt stream_content_type text/plain stream_size 9398 Content-Encoding ISO-8859-1 stream_name The Art of Smart Irrigation.pdf.txt Content-Type text/plain; charset=ISO-8859... Swanson are working to improve landscape irrigation practices in Texas by researching the water e?ciency of smart irrigation controllers and educating irrigation auditors. What does it take to be ?smart?? Fipps, professor of biological...

  16. Healthcare Energy: Spotlight on Fans and Pumps | Department of...

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

    Fans and Pumps Healthcare Energy: Spotlight on Fans and Pumps Chilled water pumps at a central plant. Image by Warren Gretz, NREL06196 Chilled water pumps at a central plant....

  17. Software Enabled Virtually Variable Displacement Pumps -Theoretical and Experimental Studies

    E-Print Network [OSTI]

    Li, Perry Y.

    Software Enabled Virtually Variable Displacement Pumps - Theoretical and Experimental Studies the functional equivalent of a variable displacement pump. This approach combines a fixed displacement pump valve control, without many of the shortcomings of commercially available variable displacement pumps

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

    E-Print Network [OSTI]

    Kirol, L. D.

    1986-01-01

    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 ...

  19. Report on New Pumping System Software on Pumping Instrumentation and Control Skids

    SciTech Connect (OSTI)

    HORNER, T.M.

    2001-04-19

    This report documents the details of the Programmable Logic Controller (PLC) and the Data Table Access Module (DTAM) logic developed for the new pumping system employed for saltwell pumping. The new system is planned first for pumping A-101 where Pumping Instrumentation and Control (PIC) skid ''F'' is located. The new pump requires a bump start under certain conditions that will be controlled by the PLC. The bump start is to ensure sufficient water to the pump bearing cavities. The PLC logic is required to control the shutdown of the injection pump that supplies the water to the saltwell pump bearing cavities. Allowance to start and stop the injection pump will be controlled by the PLC at the PIC skid. This report is written for PIC skid ''P'', but will apply to other PIC skids where the new pumping system is deployed. The logic will remain the same, but the ladder rung-numbers may change from skid to skid.

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

    SciTech Connect (OSTI)

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

    1995-01-01

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

  1. Screw-fed pump system

    DOE Patents [OSTI]

    Sprouse, Kenneth M

    2014-11-25

    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.

  2. Engine lubrication circuit including two pumps

    DOE Patents [OSTI]

    Lane, William H.

    2006-10-03

    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.

  3. Supporting information Figure S1: Pump-rePump-Probe kinetics of peridinin in methanol. Peridinin was excited at

    E-Print Network [OSTI]

    van Stokkum, Ivo

    Supporting information Figure S1: Pump-rePump-Probe kinetics of peridinin in methanol. Peridinin was excited at 400-nm, and then repumped, at a delay of 1 ps, by pulses of 620-nm. (A) Pump-Probe (blue), Pump-rePump. The inset zooms on the repump. (C): Pump-Probe (blue) and Pump-rePump-Probe (red) and (D) OD (black) spectra

  4. Self-pumping impurity control

    DOE Patents [OSTI]

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

    1983-12-21

    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.

  5. Pump Systems Optimization: Energy Efficiency

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on DeliciousMathematicsEnergyInterested PartiesBuildingBudget || Department ofDepartmentEnergyof EnergyProjectPump

  6. Charge-pump voltage converter

    DOE Patents [OSTI]

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

    2009-11-03

    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.

  7. The Water-Wise Vegetable Garden: An Analysis of the Potential for Irrigation through Rainwater Harvesting in Sunny Northern California

    E-Print Network [OSTI]

    Smith, Adrienne; Esterer-Vogel, Elisabeth

    2009-01-01

    Brouwer, C. and Heibloem, M. Irrigation Water Management:Irrigation Water Needs. Training Manual No 3. prepared forLevario, Heather. Design for Water. Canada: New Society,

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

    E-Print Network [OSTI]

    Mukherjee, Monobina

    2013-01-01

    The development of centrifugal pumps allowed deep wells toThe development of centrifugal pumps allowed deep wells to

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

    E-Print Network [OSTI]

    Amornvivat, Sutapa, 1974-

    2003-01-01

    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 ...

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

    E-Print Network [OSTI]

    Havlak, Roger Dale

    2004-01-01

    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...

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

    E-Print Network [OSTI]

    Keplinger, Keith O.; McCarl, Bruce A.

    1998-01-01

    (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...

  12. Cotton Production under Traditional and Regulated Deficit Irrigation Schemes in Southwest Texas 

    E-Print Network [OSTI]

    Wen, Yujin

    2012-10-19

    application (LEPA) sprinkler irrigation system. The 70 percent evapotranspiration (ET)-initialled regulated deficit irrigation scheme (70R) performed well in maintaining lint yield in most cotton varieties tested. The significant changes detected in lint...

  13. Irrigation of deciduous orchards and vineyards influenced by plant-soil-water relationships in individual situations

    E-Print Network [OSTI]

    Coats, W J

    2014-01-01

    surface irrigation, the labor of applying the water and thecost of the water — may be one of the important items in thewhether there is a supply of water for irrigation. “A grower

  14. A Model for Estimating Demand for Irrigation Water on the Texas High Plains 

    E-Print Network [OSTI]

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

    1975-01-01

    and soybeans. Inputs that can be evaluated include irrigation water, natural gas, diesel, nitrogen fertilizer and herbicides. The primary focus of this work was to estimate the demand for irrigation water in the study area. The model was applied using...

  15. Crops reap benefits of Pantex irrigation system | National Nuclear...

    National Nuclear Security Administration (NNSA)

    Upgrades to the current three 100-acre tracts also are being implemented, including installation of more robust piping, higher-capacity pumps and new wastewater filter banks....

  16. An update on subsea multiphase pumping

    SciTech Connect (OSTI)

    Colombi, P.; De Donno, S.

    1996-02-01

    Agip SpA anticipates that subsea multiphase production, based on long-distance transportation of untreated oilwell fluids--namely, oil, water, and gas, will be an efficient tool for the exploitation of deepwater and marginal fields. In 1990, at the Trecate onshore oil field, Agip completed long-term testing of a multiphase screw pump, which confirmed commercial surface applications. Agip then integrated a subsea version of an improved multiphase twin-screw pump into a subsea multiphase boosting unit that was installed at the Prezioso field, offshore Sicily, in 1994 That was the first subsea installation of an electrically driven multi-phase pump operating with live oil. Agip began endurance testing of the pumping system in January 1995 and by last November, the cumulated period of running reached 3,500 hours with no evidence of pump-capacity reduction. Testing focused on boosting at high gas-void fraction and oil viscosity, operation at variable motor speed for pump control, pump control by means of throttling valves, direct interaction of the pumping system with both wells and the multiphase export line, variation of the lube-oil pressure across seals and bearings, and the evaluation of any degradation effect on the pump flow capacity over time. This paper reviews the design and performance of this pump and applicability to other offshore projects.

  17. Report oftlie Board of Co~issioners on the Irrigation Qf the S Joaquin,

    E-Print Network [OSTI]

    US Army Corps of Engineers

    Report oftlie Board of Co~issioners on the Irrigation Qf the S Joaquin, Tulare, and Sacramento ON THE IRRIGATION OF THE SAN JOAQUIN, TULARE, AND SACRAMENTO VALLEYS OF THE STATE OF CALIFORNIA, 1873 Annotated on the Irrigation of the San Joaquin, Tulare, and Sacramento Valleys of the State of California. [Report

  18. Achieving Water Use Efficiency in Irrigation Districts Ronald C. Griffin1

    E-Print Network [OSTI]

    Griffin, Ronald

    Achieving Water Use Efficiency in Irrigation Districts Ronald C. Griffin1 Abstract: Irrigation districts are challenging places to achieve efficient water use when the ultimate water users do not individually own the units of water they use. The consequence is that irrigators have difficulty seeing value

  19. 3rd Quarter 2010 | 25(3) THE EFFECT OF IRRIGATION TECHNOLOGY ON GROUNDWATER USE

    E-Print Network [OSTI]

    Lin, C.-Y. Cynthia

    savings" from improving the efficiency of irrigation technology. Center pivot systems with dropped nozzles to decrease rates of extraction through incentive-based measures that encourage the conversion to more efficient irrigation technology. Voluntary, incentive-based water conservation programs for irrigated

  20. 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

  1. Submersible canned motor transfer pump

    DOE Patents [OSTI]

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

    1997-08-19

    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.

  2. The ABCs of pump selection for mine dewatering

    SciTech Connect (OSTI)

    Morgan, S.E.

    2008-10-15

    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.

  3. Multiple discharge cylindrical pump collector

    DOE Patents [OSTI]

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

    1989-01-01

    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.

  4. Absorption-heat-pump system

    DOE Patents [OSTI]

    Grossman, G.; Perez-Blanco, H.

    1983-06-16

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

  5. 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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource HistoryPotentialRuralUtilityScalePVGeneration JumpPublic Utility District No 2Pumped Hydro Jump to:

  6. Transport and Dissipation in Quantum Pumps

    E-Print Network [OSTI]

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

    2003-05-23

    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.

  7. Microcomputer Analysis of Pumping System Performance 

    E-Print Network [OSTI]

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

    1986-01-01

    produced by the pump for a given series computers, has been developed to permit the capacity, as well as the brake horsepower, analysis of pump operation based on descriptions efficiency, and net positive suction head. Pump of the piping system... to impeller peripheral velocity and head is proportional to the square of the peripheral velocity. Therefore. flow (Q) will vary directly with the change in speed (n). head (H) will vary as the square of the speed, and brake horsepower (BHP) will vary...

  8. Geothermal Heat Pumps are Scoring High Marks

    SciTech Connect (OSTI)

    2000-08-01

    Geothermal Energy Program Office of Geothermal and Wind Technologies Geothermal Heat Pumps are Scoring High Marks Geothermal heat pumps, one of the clean energy technology stars Geothermal heat pumps (GHPs) are one of the most cost-effective heating, cooling, and water heating systems available for both residential and commercial buildings. GHPs extract heat from the ground during the heating season and discharge waste heat to the ground during the cooling season. The U.S. Environmental Protecti

  9. Pumped Storage and Potential Hydropower from Conduits

    SciTech Connect (OSTI)

    none,

    2015-02-25

    Th is Congressional Report, Pumped Storage Hydropower and Potential Hydropower from Conduits, addresses the technical flexibility that existing pumped storage facilities can provide to support intermittent renewable energy generation. This study considered potential upgrades or retrofit of these facilities, the technical potential of existing and new pumped storage facilities to provide grid reliability benefits, and the range of conduit hydropower opportunities available in the United States.

  10. Original article Irrigation, faecal water content and development rate

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Original article Irrigation, faecal water content and development rate of free-living stages- ent faecal water contents (FWC) simulating a submersion (7 or 16 h) or an alternance of spraying, T vitrinus in summer, but higher rates were observed in autumn. The action of water had more effect

  11. Reclaimed Water as an Alternative Water Source for Crop Irrigation

    E-Print Network [OSTI]

    Etxeberria, Edgardo

    Reclaimed Water as an Alternative Water Source for Crop Irrigation Lawrence R. Parsons1 University Francisco, CA 94114 Robert Holden Monterey Regional Water Pollution Control Agency, 5 Harris Court, Building D, Monterey, CA 93940 David W. York York Water Circle, 3158 S. Fulmer Circle, Tallahassee, FL 32303

  12. Evlauation of Smart Irrigation Controllers: Year 2012 Results 

    E-Print Network [OSTI]

    Swanson, C.; Fipps, G.

    2013-07-18

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

  13. Evaluation of Smart Irrigation Controllers: Year 2010 Results 

    E-Print Network [OSTI]

    Swanson, Charles; Fipps, Guy

    2011-12-19

    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...

  14. Evaluation of Smart Irrigation Controllers: Year 2011 Results 

    E-Print Network [OSTI]

    Fipps, G.; Swanson, C.

    2012-01-01

    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...

  15. Effect of alkalinity in irrigation water on selected greenhouse crops 

    E-Print Network [OSTI]

    Valdez Aguilar, Luis Alonso

    2005-11-01

    Effect of Alkalinity in Irrigation Water on Selected Greenhouse Crops. (August 2004) Luis Alonso Valdez Aguilar, B.S., Universidad Aut??noma de Nuevo Le??n, Mexico; M.S., Universidad Aut??noma Chapingo, Mexico Chair of Advisory Committee: Dr. David...

  16. Fertilization and Irrigation of Eucalyptus in Southern California1

    E-Print Network [OSTI]

    Fertilization and Irrigation of Eucalyptus in Southern California1 Paul W. Moore2 In 1981 no injury has been observed on previous Eucalyptus plantings served by the same source. Weed control of nitrogen per acre per year. 1 Presented at the Workshop on Eucalyptus in California, June 14-16, 1983

  17. Outlook for Energy and Implications for Irrigated Agriculture 

    E-Print Network [OSTI]

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

    1977-01-01

    that could have significant impacts on the future cost and availability of energy, and to show what the implications of those trends are for irrigated agriculture. The primary focus of this study will be on trends in natural gas, since natural gas...

  18. 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

  19. 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.

    2005-01-01

    , Closner purchased large amounts of cheap land in Hidalgo County and created the San Juan Plantation six miles northeast from the city of Hidalgo (Allhands). It was here that he began experimenting with large-scale irrigation. In 1895, he began... of Operational Characteristics of Selected Irrigation Districts in the Texas Lower Rio Grande Valley: Hidalgo County Irrigation District No. 2 (San Juan) Megan J. Stubbs M. Edward Rister Allen W. Sturdivant Ronald D. Lacewell...

  20. Thin-disk laser pump schemes for large number of passes and moderate pump source quality

    E-Print Network [OSTI]

    Schuhmann, K; Kirch, K; Knecht, A; Kottmann, F; Nez, F; Pohl, R; Taqqu, D; Antognini, A

    2015-01-01

    Novel thin-disk laser pump layouts are proposed yielding an increased number of passes for a given pump module size and pump source quality. These novel layouts result from a general scheme which bases on merging two simpler pump optics arrangements. Some peculiar examples can be realized by adapting standard commercially available pump optics simply by intro ducing an additional mirror-pair. More pump passes yield better efficiency, opening the way for usage of active materials with low absorption. In a standard multi-pass pump design, scaling of the number of beam passes brings ab out an increase of the overall size of the optical arrangement or an increase of the pump source quality requirements. Such increases are minimized in our scheme, making them eligible for industrial applications

  1. Adjustable Speed Pumping Applications: Industrial Technologies...

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

    with process requirements. A throttling valve is usually employed when the process flow requirement is less than the flow at the pumping system's natural operating point....

  2. Tritium High Vacuum Pump Test Plan

    Office of Environmental Management (EM)

    of Normetex vs. Eumeca Air Squared Edwards Busch * Ultimate Vacuum * Develop Flow Curve * Provide basis for selecting the Normetex Pump Replacement Performance * Flow...

  3. Method and system for small scale pumping

    DOE Patents [OSTI]

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

    2010-01-26

    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.

  4. Multiple moving wall dry coal extrusion pump

    DOE Patents [OSTI]

    Fitzsimmons, Mark Andrew

    2013-05-14

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

  5. Natural Refrigerant (R-729) Heat Pump

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

    Natural Refrigerant (R-729) Heat Pump 2014 Building Technologies Office Peer Review New Project Lee Jestings (lee@S-RAM.com), Project Summary Timeline: Key Partners: Start date:...

  6. Tips: Heat Pumps | Department of Energy

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

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

  7. Geometry, Statistics and Asymptotics of Quantum Pumps

    E-Print Network [OSTI]

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

    2000-05-31

    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.

  8. Pneumatic pumping in centrifugal microfluidic platforms

    E-Print Network [OSTI]

    Gorkin, Robert; Clime, Liviu; Madou, Marc; Kido, Horacio

    2010-01-01

    T, Madou M (2009) Serial siphon valving for centrifugale J (2007) Integrated siphon-based metering and sedimen-pneumatic pumping to siphon priming. Keywords Centrifugal Á

  9. CO2 Heat Pump Water Heater

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

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

  10. 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.

  11. Maintain Pumping Systems Effectively; Industrial Technologies...

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

    equipment. The following methods apply to pumping systems: Vibration analysis. Trending vibration amplitude and frequency can detect an impending bearing failure. It can also...

  12. Submersible canned motor mixer pump

    DOE Patents [OSTI]

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

    1997-10-07

    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.

  13. Submersible canned motor mixer pump

    DOE Patents [OSTI]

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

    1997-01-01

    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.

  14. 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

  15. Multi-stage internal gear/turbine fuel pump

    DOE Patents [OSTI]

    Maier, Eugen; Raney, Michael Raymond

    2004-07-06

    A multi-stage internal gear/turbine fuel pump for a vehicle includes a housing having an inlet and an outlet and a motor disposed in the housing. The multi-stage internal gear/turbine fuel pump also includes a shaft extending axially and disposed in the housing. The multi-stage internal gear/turbine fuel pump further includes a plurality of pumping modules disposed axially along the shaft. One of the pumping modules is a turbine pumping module and another of the pumping modules is a gerotor pumping module for rotation by the motor to pump fuel from the inlet to the outlet.

  16. Figure 1. Schematic of initial air pump design Design of Air Pump System Using Bond Graph

    E-Print Network [OSTI]

    Fernandez, Thomas

    , is presented in Figure 1. It is a vibratory pump in which an electromagnetic circuit drives a small permanent magnet attached to a pivoted lever that, in turn, drives a rubber bellows pump. The bellows pump has an embryo bond graph model. Parameters for the GP search process must be set to control both the generation

  17. 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

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

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

    PUMP LIFE CYCLE COSTS: PUMP LIFE CYCLE COSTS: A GUIDE TO LCC ANALYSIS FOR PUMPING SYSTEMS EXECUTIVE SUMMARY T O F E N E R G Y DE P A R T M EN U E N I T E D S T A T S O F A E R IC A...

  19. 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

  20. `Heat pumps in Smart Grids' IEA Annex 42

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    Annex 42 `Heat pumps in Smart Grids' #12;IEA Annex 42 `Heat Pumps in Smart Grids' by Peter P.M. Wagener Managing Consultant OPERATING AGENT: #12;GAS HEAT PUMPS COMMERCIAL SECTOR RESEARCH, STRATEGY AUTOMATION HEAT PUMPS DOMESTIC AND COMMERCIAL BUILDINGS WORKING GROUP THERMAL DRIVEN HEAT PUMPS TARGET

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

    E-Print Network [OSTI]

    Prigozhin, Leonid

    Potential of Indigenous Water Harvesting System in the Karakum Desert U.S. Agency for International water scarcity, water quality, irrigation technology and environmental constraints. Y. Tsur, U. Shani, D of vegetation patterns in water limited systems M. Shachak and E. Meron Grantor: Israel Science Foundation

  2. 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.

  3. Optical Pumping : Experiment and Theory Revisited

    E-Print Network [OSTI]

    Zotin K. -H. Chu

    2008-12-31

    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.

  4. Promising Technology: Heat Pump Water Heaters

    Broader source: Energy.gov [DOE]

    A heat pump water heater uses electricity to transfer heat from the ambient air to stored water, as opposed to an electric resistance water heater, which uses electricity to generate the heat directly. This enables the heat pump water heater to be 2 to 3 times as efficient as an electric resistance water heater.

  5. 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)

    1995-01-01

    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.

  6. Pump packages for Colombian crude oil pipeline

    SciTech Connect (OSTI)

    1994-05-01

    The Caterpillar Large Engine Center recently packaged ten engine-driven centrifugal pump packages for British Petroleum Exploration`s crude oil pipeline in South America. The ten sets, which use Ingersoll-Dresser centrifugal pumps, are designed to increase significantly the output of BP`s Central LLanos pipeline located in a remote region near Bogota, Colombia. BP anticipates that the addition of the new pump packages will increase daily volume from the current 100000 barrels to approximately 210000 barrels when the upgrade of the pipeline is completed in September. The ten sets are installed at three separate pumping stations. The stations are designed to operate continuously while unmanned, with only periodic maintenance required. The pump packages are powered by Caterpillar 3612 engines rated 3040 kW at 1000 r/min. The 12-cylinder engines are turbocharged and charge-air cooled and use the pipeline oil as both fuel and a cooling medium for the fuel injectors.

  7. Fluid inertia consideration in sucker rod pump diagnosis 

    E-Print Network [OSTI]

    Csaszar, Albert Bela

    1993-01-01

    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...

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

    E-Print Network [OSTI]

    Dao, K.

    2013-01-01

    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.

  9. Ultrafast pump-probe force microscopy with nanoscale resolution

    E-Print Network [OSTI]

    2015-01-01

    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

  10. Air-Source Heat Pumps | Department of Energy

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

    Air-Source Heat Pumps Air-Source Heat Pumps April 23, 2015 - 3:35pm Addthis When properly installed, an air-source heat pump can deliver one-and-a-half to three times more heat...

  11. Engineering microbial biofuel tolerance and export using efflux pumps

    E-Print Network [OSTI]

    Dunlop, Mary

    2012-01-01

    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.

  12. 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

  13. 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.

    1986-01-01

    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...

  14. Achema Congress 2012 Application of Industrial Heat Pumps

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    Achema Congress 2012 Session Application of Industrial Heat Pumps Improving energy "Heat Pump Programme" and "Industrial Energy-related Technologies and Systems" Programme Introduction H of Energy (IER), University of Stuttgart, Stuttgart, Germany Industrial Heat Pumps in Germany ­ Potentials

  15. Wet-gas compression in twin-screw multiphase pumps 

    E-Print Network [OSTI]

    Chan, Evan

    2009-05-15

    Multiphase pumping with twin-screw pumps is a relatively new technology that has been proven successful in a variety of field applications. By using these pumps to add energy to the combined gas and liquid wellstream with ...

  16. www.heatpumpcentre.org IEA HEAT PUMP PROGRAMME

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    www.heatpumpcentre.org IEA HEAT PUMP PROGRAMME Research, Development, Demonstration and Promotion of Heat Pumping Technology #12;www.heatpumpcentre.org Includes ­ Heating ­ Air conditioning ­ Refrigeration Covers applications in ­ Residential and commercial buildings ­ Industry HEAT PUMPING TECHNOLOGY

  17. Select an Energy-Efficient Centrifugal Pump: Industrial Technologies...

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

    2005 Select an Energy-Efficient Centrifugal Pump Overview Centrifugal pumps handle high flow rates, provide smooth, nonpulsating delivery, and regulate the flow rate over a wide...

  18. Trim or Replace Impellers on Oversized Pumps: Industrial Technologies...

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

    pump exceeds process requirements. * System bypass valves are open, indicating excess flow rate. * The pump is operating far from its design point. * The operating head and (or)...

  19. Performance Analysis of Air-Source Variable Speed Heat Pumps...

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

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

  20. Low power integrated pumping and valving arrays for microfluidic...

    Office of Scientific and Technical Information (OSTI)

    Low power integrated pumping and valving arrays for microfluidic systems Citation Details In-Document Search Title: Low power integrated pumping and valving arrays for microfluidic...

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

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

    Control Strategies for Centrifugal Pumps with Variable Flow Rate Requirements Control Strategies for Centrifugal Pumps with Variable Flow Rate Requirements This tip sheet discusses...

  2. Geothermal Heat Pumps: Market Status, Barriers to Adoption, and...

    Open Energy Info (EERE)

    Geothermal Heat Pumps: Market Status, Barriers to Adoption, and Actions to Overcome Barriers Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Geothermal Heat Pumps:...

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

    E-Print Network [OSTI]

    Franco, Victor

    2011-01-01

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

  4. Overview of Pump Systems Matter | Department of Energy

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

    Pump Systems Matter (PSM) is a non-profit (501(c) 3) educational foundation, established to educate the marketplace and promote pumping systems energy efficiency....

  5. 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...

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

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

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

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

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

    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...

  8. 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...

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

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

    Advanced Variable Speed Air-Source Integrated Heat Pump 2013 Peer Review Advanced Variable Speed Air-Source Integrated Heat Pump 2013 Peer Review Emerging Technologies Project for...

  10. 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...

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

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

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

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

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

    Conservation Program: Test Procedure for Pumps, Notice of Proposed Rulemaking Summary of HI Standards Relating to Energy Efficency Pump Life Cycle Costs: A Guide to LCC Analysis...

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

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

    Edition (May 2006) More Documents & Publications Trim or Replace Impellers on Oversized Pumps Pump Selection Considerations Summary of HI Standards Relating to Energy Efficency...

  14. DOE Webinar ? Residential Geothermal Heat Pump Retrofits (Presentatio...

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

    DOE Webinar Residential Geothermal Heat Pump Retrofits (Presentation) DOE Webinar Residential Geothermal Heat Pump Retrofits (Presentation) Presented at the U.S. Department...

  15. 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

  16. Economic and Financial Methodology for South Texas Irrigation Projects – RGIDECON© 

    E-Print Network [OSTI]

    Rister, M. Edward; Rogers, Callie S.; Lacewell, Ronald; Robinson, John; Ellis, John; Sturdivant, Allen

    2009-01-01

    COLLEGE OF AGRICULTURE AND LIFE SCIENCES TR-203 (Revised) 2009 Economic and Financial Methodology for South Texas Irrigation Projects ? RGIDECON? By: M. Edward Rister Callie S. Rogers Ronald D. Lacewell John R.... C. Robinson John R. Ellis Allen W. Sturdivant Texas AgriLife Research Texas AgriLife Extension Service Texas Water Resources Institute Texas Water Resources Institute Technical Report August 2009 (originally published October 2002...

  17. Heat Balance Study for Submersible Mixer Pump

    SciTech Connect (OSTI)

    Lee, S.Y.

    2003-07-21

    A transient heat balance model was developed to assess the impact of a Submersible Mixer Pump (SMP) on waste temperature during the process of waste mixing and removal for the Type-I SRS tanks. The model results will be mainly used to determine the SMP design impacts on the waste tank temperature during operations and to develop a specification for a new SMP design to replace existing long-shaft mixer pumps used during waste removal. The model will also be used to provide input to the operation planning. This planning will be used as input to pump run duration in order to maintain temperature requirements within the tank during SMP operation.

  18. 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)

    1989-01-01

    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.

  19. Canned pump having a high inertia flywheel

    DOE Patents [OSTI]

    Veronesi, L.; Raimondi, A.A.

    1989-12-12

    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.

  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)

    2006-07-26

    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. 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)

    2007-10-23

    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.

  2. Pump station for radioactive waste water

    DOE Patents [OSTI]

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

    2003-11-18

    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.

  3. Solid state radiative heat pump

    DOE Patents [OSTI]

    Berdahl, Paul H. (Oakland, CA)

    1986-01-01

    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.

  4. Multiple discharge cylindrical pump collector

    SciTech Connect (OSTI)

    Dunn, C.; Bremmer, R.J.; Meng, S.Y.

    1989-10-17

    This patent describes an improvement in a method for circulating fluid coolant through a reactor core of a pool-type nuclear reactor having a sealed containment vessel containing a reactor core submersed in a body of liquid coolant. The method for circulating coolant including utilization of a rotary pump including an impeller for producing a highly circumferential flow of cooling fluid and a method for collecting and discharging coolant fluid, the improvement to the method of collecting and discharging coolant fluid including the steps of: producing a substantially uniform circumferential flow of the fluid by directing the flow through a plurality of diffuser vanes and into an annular collector located radially outboard from the impeller. The annular collector having an entirely closed outer periphery; and turning the flow of cooling fluid into a substantially axially direction while maintaining a substantially constant average flow velocity by directing the coolant flow from the annular collector into a plurality of individual passageways located in an axial position relative to the annular collector.

  5. Triple integrated heat pump system

    SciTech Connect (OSTI)

    Blackshaw, A.L.; Robinson, G.P. Jr.

    1987-03-03

    A heat pump system is described comprising: a first heat exchange means having first and second refrigerant connections; a second heat exchange means having first and second refrigerant connections; a third heat exchange means having first and second refrigerant connections; a refrigerant pressurizing device having a suction inlet and a high pressure outlet; a reversible refrigerant expansion means for expanding refrigerant from condenser to evaporator pressure connected between the second refrigerant connections on the first and second heat exchange means; an alternate refrigerant expansion means for expanding refrigerant from condenser to evaporator pressure connected to the second refrigerant connection on the third heat exchange means; check valve means connecting the alternate refrigerant expansion means to the common points between the reversible expansion means and each of the first and second heat exchange means so that refrigerant can flow from the alternate expansion means to the first and second heat exchange means but flow of refrigerant from the first and second heat exchange means is prevented; and control valve means.

  6. Solid state radiative heat pump

    DOE Patents [OSTI]

    Berdahl, P.H.

    1984-09-28

    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.

  7. Economic Implications of Applying Effluent for Irrigation in the Texas High Plains. 

    E-Print Network [OSTI]

    Victurine, Raymond F.; Goodwin, H.L.; Lacewell, Ronald D.

    1985-01-01

    and groundwater irrigated farms, the respective increases in returns are 170% and 65%. Keywords: Wastewater/rural communities/sewage treatment/waste disposal ECONOMIC IMPLICATIONS OF APPLYING EFFLUENT FOR IRRIGATION IN THE TEXAS HIGH PLAINS Raymond F... .......... . . . .................... . .................. 14 ACKNOWLEDGMENTS ....................................... 17 ii ECONOMIC IMPLICATIONS OF APPLYING EFFLUENT FOR IRRIGATION IN THE TEXAS HIGH PLAINS INTRODUCTION Wastewater treatment through land application has been practiced for decades...

  8. Evolution of Irrigation Districts and Operating Institutions: Texas, Lower Rio Grande Valley 

    E-Print Network [OSTI]

    Fernandez, Linda; Robinson, John R.C.; Lacewell, Ronald D.; Rister, M. Edward; Ellis, John R.; Sturdivant, Allen W.; Stubbs, Megan J.

    2003-01-01

    sugar plantation, but his venture ultimately failed due to financial problems (Tiefenbacher). Closner’s venture was the first of many irrigation companies created to accommodate the interest in irrigated agriculture. In the 1890s, land developers... Evolution of Irrigation Districts and Operating Institutions: Texas, Lower Rio Grande Valley Megan J. Stubbs M. Edward Rister Ronald D. Lacewell John R. Ellis Allen W. Sturdivant John R. C. Robinson Linda Fernandez...

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

    DOE Patents [OSTI]

    Jostlein, Hans

    2006-04-04

    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. Diode-laser-pump module with integrated signal ports for pumping amplifying fibers and method

    DOE Patents [OSTI]

    Savage-Leuchs; Matthias P. (Woodinville, WA)

    2009-05-26

    Apparatus and method for collimating pump light of a first wavelength from laser diode(s) into a collimated beam within an enclosure having first and second optical ports, directing pump light from the collimated beam to the first port; and directing signal light inside the enclosure between the first and second port. The signal and pump wavelengths are different. The enclosure provides a pump block having a first port that emits pump light to a gain fiber outside the enclosure and that also passes signal light either into or out of the enclosure, and another port that passes signal light either out of or into the enclosure. Some embodiments use a dichroic mirror to direct pump light to the first port and direct signal light between the first and second ports. Some embodiments include a wavelength-conversion device to change the wavelength of at least some of the signal light.

  11. China Energy Databook - Rev. 4

    E-Print Network [OSTI]

    Sinton Editor, J.E.

    2010-01-01

    is in the form of irrigation pumps, and uti- lization ratescapacity is devoted to irrigation pumps. These represent

  12. India Energy Outlook: End Use Demand in India to 2020

    E-Print Network [OSTI]

    de la Rue du Can, Stephane

    2009-01-01

    and 6 million diesel irrigation pump sets in operation (rural areas, pump sets are installed to provide irrigation

  13. Life-Cycle Water Impacts of U.S. Transportation Fuels

    E-Print Network [OSTI]

    Scown, Corinne Donahue

    2010-01-01

    178) Scherer, T. F. Irrigation Water Pumps. AE-1057; Northlarge groundwater pumps operated by the irrigation districts

  14. Fast Automated Demand Response to Enable the Integration of Renewable Resources

    E-Print Network [OSTI]

    Watson, David S.

    2013-01-01

    and thus available for irrigation pump-based demand responseeach) and booster pumps used in crop irrigation also make up

  15. Hydrogeologic Assessment of the 4-S Land and Cattle Company Ranch

    E-Print Network [OSTI]

    Quinn, Nigel W.T.

    2006-01-01

    assumption is made that irrigation wells pump on average 50%that the existing irrigation wells pump on average 50% of

  16. Absorption Heat Pumps | Department of Energy

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

    an ammonia-water absorption cycle to provide heating and cooling. As in a standard heat pump, the refrigerant (in this case, ammonia) is condensed in one coil to release its...

  17. Pumped Storage and Potential Hydropower from Conduits

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

    Switzerland, in 1882, where a pump and turbine operated with a small reservoir as a hydro-mechanical storage syst em for nearly a decade. The first unit in North America was...

  18. Pneumatic pumping in centrifugal microfluidic platforms

    E-Print Network [OSTI]

    Gorkin, Robert; Clime, Liviu; Madou, Marc; Kido, Horacio

    2010-01-01

    Reciprocating ?ow-based centrifugal micro?uidics mixer. RevSerial siphon valving for centrifugal micro?uidic platforms.PAPER Pneumatic pumping in centrifugal micro?uidic platforms

  19. Efficiency-A Pump Engineering Nemesis? 

    E-Print Network [OSTI]

    McGuire, J. T.

    1987-01-01

    /or cavitation erosion of the pump's impeller. Certainly both these occurrences consume additional energy, the first directly by higher power, the second indirectly by material wastage. There are, however, two further effects of low NPSHA, both at least...

  20. Thermal pumping of light-emitting diodes

    E-Print Network [OSTI]

    Gray, Dodd (Dodd J.)

    2011-01-01

    The work presented here is a study of thermally enhanced injection in light-emitting diodes (LEDs). This effect, which we refer to as "thermal pumping", results from Peltier energy exchange from the lattice to charge ...

  1. 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 ...

  2. Anomalous Topological Pumps and Fractional Josephson Effects

    E-Print Network [OSTI]

    Fan Zhang; C. L. Kane

    2013-10-20

    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.

  3. Performance of a New Lightweight Reciprocating Pump

    SciTech Connect (OSTI)

    Whitehead, J C

    2005-06-09

    A new four-chamber piston pump design has been fabricated and tested. The small-scale propellant pump is intended to be powered by gas at elevated temperatures, e.g. in a gas-generator cycle rocket propulsion system. Two key features are combined for the first time: leak-tight liquid-cooled seals, and a high throughput per unit hardware mass. Measured performance curves quantify flows, pressures, leakage, volumetric efficiency, and tank pressure requirements. A pair of 300-gram pumps operating with significant margin could deliver fuel and oxidizer at 5 MPa to a compact lightweight 1000-N engine, while tank pressure remains at 0.35 MPa. Pump weight is well below one percent of thrust, as is typical for launch vehicle engines. Applications include small upper stages, aggressive maneuvers in space, and miniature launch vehicles for Mars ascent.

  4. Submersible pumping system with heat transfer mechanism

    DOE Patents [OSTI]

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

    2014-04-15

    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.

  5. Rotordynamics of Twin-Screw Pumps 

    E-Print Network [OSTI]

    Aboel Hassan Muhammed, Ameen

    2013-02-26

    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. ...

  6. 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)

    1996-01-01

    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.

  7. Water Well with Brick Pump House 

    E-Print Network [OSTI]

    Raiford Stripling Associates, Inc.; Stripling, Raiford L.

    2011-08-29

    Expensive fan wrecks and down time occurs when couplings break or gearboxes self-destruct. A viable alternative eliminates shaft, coupling, and gearbox moving motor to ground level, driving a hydraulic pump transmitting fluid under pressure. A...

  8. Tips: Heat Pumps | Department of Energy

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

    air, water, or ground outside your home and concentrate it for use inside. Geothermal (or ground source) heat pumps have some major advantages. They can reduce energy use by...

  9. Mass spectrometer vacuum housing and pumping system

    DOE Patents [OSTI]

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

    1996-07-23

    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.

  10. Water and Space Heating Heat Pumps 

    E-Print Network [OSTI]

    Kessler, A. F.

    1985-01-01

    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...

  11. Absorption Heat Pumping- Have You Tried It? 

    E-Print Network [OSTI]

    Davis, R. C.

    1985-01-01

    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. 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...

  13. Heat Pump for High School Heat Recovery 

    E-Print Network [OSTI]

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

    2006-01-01

    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...

  14. Geothermal heat pumps for federal buildings

    SciTech Connect (OSTI)

    1999-09-02

    Geothermal heat pumps (GHPs) can provide significant energy savings to a wide range of Federal facilities. GHP equipment can be obtained and installed at no up-front cost through Energy Savings Performance Contracts (ESPCs) through energy service companies (ESCOs).

  15. Electrospray emitters For diffusion vacuum pumps

    E-Print Network [OSTI]

    Diaz Gómez Maqueo, Pablo (Pablo Ly)

    2011-01-01

    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 ...

  16. Screening Pumping Systems for Energy Savings Opportunities 

    E-Print Network [OSTI]

    Casada, D.

    1999-01-01

    . Under the auspices of the Department of Energy's (DOE) Motor Challenge Program, prescreening guidance documents and a computer program called PSAT (Pumping System Assessment Tool) have been developed to help end users, consultants, and equipment...

  17. Electric Driven Heat Pumps in Distillation Processes 

    E-Print Network [OSTI]

    Harris, G. E.

    1983-01-01

    Radian Corporation, under contract to the Electric Power Research Institute, has recently completed a study of the potential range of application for retrofitting electric driven heat pumps to existing distillation columns. ...

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

    E-Print Network [OSTI]

    Mukherjee, Monobina

    2013-01-01

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

  19. 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.

    2009-01-01

    ?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...

  20. Pumping-Restriction Theorem for Stochastic Networks

    E-Print Network [OSTI]

    V. Y. Chernyak; N. A. Sinitsyn

    2008-09-02

    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.

  1. Optical pumping into many-body entanglement

    E-Print Network [OSTI]

    Jaeyoon Cho; Sougato Bose; M. S. Kim

    2011-01-16

    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.

  2. Exploding conducting film laser pumping apparatus

    DOE Patents [OSTI]

    Ware, K.D.; Jones, C.R.

    1984-04-27

    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.

  3. S-102 Transfer Pump Restriction Modeling Results

    SciTech Connect (OSTI)

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

    2008-03-27

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

  4. Promising Technology: Ground Source Heat Pumps

    Broader source: Energy.gov [DOE]

    Ground source heat pumps (GSHP) use the constant temperature of the Earth as the heat exchange medium instead of the outside air temperature. During the winter, a GSHP uses the ground as a heat source to provide heating, and during the summer, a GSHP uses the ground as a heat sink to provide cooling. Although more expensive than air-source heat pumps, GSHP’s are much more efficient, especially in cold temperatures.

  5. Vertical pump turbine oil environmental evaluation

    SciTech Connect (OSTI)

    Culver, G.

    1991-04-01

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

  6. Recirculating Liquid Nitrogen System for Operation of Cryogenic Pumps

    E-Print Network [OSTI]

    Walker, Mitchell

    1 Recirculating Liquid Nitrogen System for Operation of Cryogenic Pumps IEPC-2011-217 Presented Abstract: Cryogenic pumps are attractive for electric propulsion test facilities due to their pumping speed cryogenerators to provide the cooling necessary for a ten-cryopump vacuum facility with a pumping rate on xenon

  7. Troubleshoot Glove Box Cryo-pump Eric Sundholm

    E-Print Network [OSTI]

    Wager, John F.

    Troubleshoot Glove Box Cryo-pump Eric Sundholm 8-4-06 Background Pump and chamber were in good working order for many years. Pumping motion on the cold head suddenly, and without warning, stopped. The predictable pumping was replaced by a shaking and apparent short stroking like ticking. Data

  8. Automatic Analysis of the NRL Pump Ruggero Lanottea

    E-Print Network [OSTI]

    Tronci, Enrico

    behavior, the pump uses statistically modulated acknowledgments. In [12] a NRL Pump assurance strategyAutomatic Analysis of the NRL Pump Ruggero Lanottea , Andrea Maggiolo-Schettinib , Simone Tinia Sapienza", Via Salaria 113, 00198 Roma, Italy Abstract We define a probabilistic model for the NRL Pump

  9. PERFORMANCE OF A STIRLING ENGINE POWERED HEAT ACTIVATED HEAT PUMP

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    PERFORMANCE OF A STIRLING ENGINE POWERED HEAT ACTIVATED HEAT PUMP W. D. C. Richards and W. L. Auxer General Electric Company Space Division King of Prussia, Pa. ABSTRACT A heat activated heat pump (HAHP by the heat pump effect. The Stirling engine/Rankine cycle refrigeration loop heat pump being developed would

  10. Industrial heat pumps in Germany -potentials, technological development

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    1 Industrial heat pumps in Germany - potentials, technological development and application examples of Energy (IER) Universität Stuttgart ACHEMA 2012 Application of industrial heat pumps Improving energy-efficiency of industrial processes 13. Juni 2012 #12;ACHEMA 2012 - Industrial heat pumps 21st June 2012 Types of Heat Pumps

  11. Integrated heat pump water heater

    SciTech Connect (OSTI)

    Robinson, G.P.; Blackshaw, A.L.

    1986-07-08

    An integrated heat pump water heater system is described for providing either heating or cooling of an interior space, and heating water in conjunction with either the heating or cooling cycle or independently, by means of a refrigerant flowing through the system. The system consists of: a compressor; a first heat exchanger means for providing heat to the interior space in the heating cycle and for removing heat during the cooling cycle by heat transfer with a refrigerant therein; a second heat exchanger means for transferring heat to or from a refrigerant therein by heat exchanger with an exterior medium; a third heat exchanger means for transferring heat from a refrigerant therein to water circulated therethrough; a first expansion device; a second expansion device; a third expansion device; refrigerant flow connection means connected between the compressor, the heat exchanger means, and the expansion devices which may be controllably connected in alternate configurations whereby. In a first configuration the refrigerant flow is sequentially from the compressor, through the third heat exchanger means, through the second heat exchanger means, through the first expansion device, through the first heat exchanger means, and back to the compressor. In a second configuration the refrigerant flow is sequentially from the compressor, through the third heat exchanger means, through the first heat exchanger means, through the second expansion device, through the second heat exchanger means, and back to the compressor. In a third configuration the refrigerant flow is sequentially from the compressor, through the third heat exchanger means, through the third expansion device, through the second heat exchanger means, and back to the compressor.

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

    E-Print Network [OSTI]

    Kleinfeld, David

    PREPARATION AND IMPLANTATION ALZET OSMOTIC PUMPS (SOP-9) Osmotic pumps manufactured by ALZA the inner reservoir and the outer wall of the pump is an `osmotic sleeve' which expands as water passes information on the operation and applications of osmotic pumps can be found in the manufacturer's Technical

  13. 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

  14. 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.

    2006-01-01

    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...

  15. Advanced Chemical Heat Pumps Using Liquid-Vapor Reactions 

    E-Print Network [OSTI]

    Kirol, L.

    1987-01-01

    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 ically feasible systems...

  16. 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

    2005-09-13

    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.

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

    E-Print Network [OSTI]

    Swanson, Charles; Fipps, Guy

    2009-01-01

    stream_source_info TR-354 Inital Results-Smart Controller Report 7-16-09.pdf.txt stream_content_type text/plain stream_size 20709 Content-Encoding ISO-8859-1 stream_name TR-354 Inital Results-Smart Controller Report 7-16-09.pdf....txt Content-Type text/plain; charset=ISO-8859-1 COLLEGE OF AGRICULTURE AND LIFE SCIENCES TR-354 2009 Evaluation of Smart Irrigation Controllers: Initial Bench Testing Results July 2009 By Charles Swanson...

  18. 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.

    1953-01-01

    per acre of cotton for one irrigation on sandy soils but only .85 hour per acre on heavy soils. This saving was possible because the runs were longer and it was not necessary to re-set siphon tubes so often on heavy soils. Also, farmers on sandy... soils had more trouble from washing and from ditches breaking than was experienced on, heavy soils. Sondy Soils Two-.or l*artor Faur-rnr 1.oslsr equlpmsnt *qulpmenl TO?OI how. pel acre YO- Tm~tor Yon TVO~O. 398 48 383 33 Hand "orb Machine work...

  19. Installing a Subsurface Drip Irrigation System for Row Crops 

    E-Print Network [OSTI]

    Enciso, Juan

    2004-09-07

    be used to trap the sand, followed by a disk or sand media fil- ter. When water comes from a canal, it is common to have both a media filter and a screen filter. Media filters need the most adjustment during installation. Media filters consist of several... system The main components of an irrigation system are the filters, mainlines, manifolds (submains), field blocks, flush lines, drip lines (laterals) and accessories (Fig. 1). All the drip lines (laterals) connected to the same submain make up a field...

  20. 1980 annual report of the Coolidge Solar Irrigation Project

    SciTech Connect (OSTI)

    Torkelson, L.; Larson, D. L.

    1981-02-01

    The Coolidge Solar Irrigation Facility at Coolidge, Arizona, consists of a 2136.8-m/sup 2/ (23,000-ft/sup 2/) line-focus parabolic trough collector subsystem, a 113.55-m/sup 3/ (30,000-gallon) thermal storage subsystem, and a 150-kW/sub e/ (142.2-Btu/s) organic Rankine cycle power generation unit. The performance of the facility and its operational and maintenance requirements are reported. The period from the the facility's initial operation in October 1979 to 31 August 1980 is covered.

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

    E-Print Network [OSTI]

    Peries, Xavier; Enciso, Juan

    2005-10-05

    the Correct Type of Poly-pipe The most important of several pipe-selection char- acteristics are thickness and diameter (see Table 1). Thickness determines pipe durability. Some farmers prefer thinner poly-pipe (6 mil); because poly-pipe is sold by weight..., they can save money by econo- mizing on thickness. Poly-pipes also come in larger thicknesses (15 mil), allowing more pressure to be contained (up to 5 feet of water head or 2.15 psi). Flexible Pipe (poly-pipe) Surface Irrigation...

  2. Effects of Irrigation on Great Plains and Midwest Precipitation Processes

    E-Print Network [OSTI]

    Huber, David Benjamin

    2010-11-18

    B. Huber, David B. Mechem, and Nathaniel A. Brunsell Outline •Historical and Conceptual Review •Description of Modeling Approach l•Resu ts •Conclusion Historical Changes in Precipitation Climatological Precipitation Differences (1971 – 2000 minus 1901 – 1930) Source: PRISM Climate Group Irrigation... moisture in the lower atmosphere increases Th id i ddhdb h l llj• e evapotranspirated water s advected northward y t e ow level et •Humid air is lifted over higher sensible heat areas by deep convective updrafts •Precipitation events become more intense •Moisture...

  3. PP-90-1 Imperial Irrigation District | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on DeliciousMathematicsEnergyInterested PartiesBuilding energy codes have a moreINCREASES5-24690-1 Imperial Irrigation

  4. Summary Report of the 2010 Technology Summit Meeting on Pumped Storage Hydropower Pumped Storage

    E-Print Network [OSTI]

    Post, Wilfred M.

    Summary Report of the 2010 Technology Summit Meeting on Pumped Storage Hydropower 1 Pumped Storage Hydropower Summary Report on a Summit Meeting Convened by Oak Ridge National Laboratory, the National Hydropower Association, and the Hydropower Research Foundation Washington, DC September 20-21, 2010 #12

  5. 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.

    2007-01-01

    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...

  6. Mitigating cotton revenue risk through irrigation, insurance, and/or hedging 

    E-Print Network [OSTI]

    Bise, Elizabeth Hart

    2009-05-15

    by cotton farmers in Texas using irrigation, put options, and yield insurance. The primary objective was to analyze the interactions of irrigation, put options, and yield insurance as risk management strategies on the economic viability of a 1,000 acre...

  7. 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

    2008-01-01

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

  8. Cold Climates Heat Pump Design Optimization

    SciTech Connect (OSTI)

    Abdelaziz, Omar [ORNL] [ORNL; Shen, Bo [ORNL] [ORNL

    2012-01-01

    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.

  9. Tank 26 Evaporator Feed Pump Transfer Analysis

    SciTech Connect (OSTI)

    Tamburello, David; Dimenna, Richard; Lee, Si

    2009-02-11

    The transfer of liquid salt solution from Tank 26 to an evaporator is to be accomplished by activating the evaporator feed pump, located approximately 72 inches above the sludge layer, while simultaneously turning on the downcomer. Previously, activation of the evaporator feed pump was an isolated event without any other components running at the same time. An analysis of the dissolved solution transfer has been performed using computational fluid dynamics methods to determine the amount of entrained sludge solids pumped out of the tank to the evaporator with the downcomer turned on. The analysis results showed that, for the maximum and minimum supernate levels in Tank 26 (252.5 and 72 inches above the sludge layer, respectively), the evaporator feed pump will entrain between 0.03 and 0.1 wt% sludge undissolved solids weight fraction into the eductor, respectively, and therefore are an order of magnitude less than the 1.0 wt% undissolved solids loading criteria to feed the evaporator. Lower tank liquid levels, with respect to the sludge layer, result in higher amounts of sludge entrainment due to the increased velocity of the plunging jets from the downcomer and evaporator feed pump bypass as well as decreased dissipation depth. Revision 1 clarifies the analysis presented in Revision 0 and corrects a mathematical error in the calculations for Table 4.1 in Revision 0. However, the conclusions and recommendations of the analysis do not change for Revision 1.

  10. TANK 26 EVAPORATOR FEED PUMP TRANSFER ANALYSIS

    SciTech Connect (OSTI)

    Tamburello, D; Si Lee, S; Richard Dimenna, R

    2008-09-30

    The transfer of liquid salt solution from Tank 26 to an evaporator is to be accomplished by activating the evaporator feed pump, located approximately 72 inches above the sludge layer, while simultaneously turning on the downcomer. Previously, activation of the evaporator feed pump was an isolated event without any other components running at the same time. An analysis of the dissolved solution transfer has been performed using computational fluid dynamics methods to determine the amount of entrained sludge solids pumped out of the tank to the evaporator with the downcomer turned on. The analysis results showed that, for the maximum and minimum supernate levels in Tank 26 (252.5 and 72 inches above the sludge layer, respectively), the evaporator feed pump will entrain between 0.05 and 0.1 wt% sludge solids weight fraction into the eductor, respectively. Lower tank liquid levels, with respect to the sludge layer, result in higher amounts of sludge entrainment due to the increased velocity of the plunging jets from the downcomer and evaporator feed pump bypass as well as decreased dissipation depth.

  11. 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.

    1982-08-12

    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.

  12. Miniature thermo-electric cooled cryogenic pump

    DOE Patents [OSTI]

    Keville, Robert F. (Valley Springs, CA)

    1997-01-01

    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.

  13. Miniature thermo-electric cooled cryogenic pump

    DOE Patents [OSTI]

    Keville, R.F.

    1997-11-18

    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.

  14. Dual nozzle single pump fuel injection system

    SciTech Connect (OSTI)

    Gonzalez, C.

    1992-02-25

    This patent describes an improvement in a fuel injection system in a stratified charge hybrid internal combustion engine including a main combustion chamber, a precombustion chamber connected with the main chamber, fuel injectors in the main combustion chamber and precombustion chamber which open at higher and lower pressure levels respectively to sequentially inject fuel into the prechamber and the main chamber, timed spark ignition means in the prechamber for ignition of the fuel-air mixture therein, and an engine driven and timed fuel injection pump having a variable output capacity that varies with power level position, the injection pump is supplied by a low pressure charging pump. The improvement comprises: a shuttle valve including a bore therein; a shuttle spool means positioned within the bore defining a prechamber supply chamber on one side thereof and a spool activation chamber on the opposite side thereof the spool means having a first and second position; biasing means urging the spool towards it first position with the spool actuation chamber at its minimum volume; first conduit means connecting charging pressure to the prechamber supply camber in the first position oil the spool means; second conduit means connecting the injection pump to spool actuation chamber; third conduit means connecting the spool actuating chamber with the main injector; forth conduit means connecting the prechamber supply chamber with the prechamber injector; the initial charge from the injection pump actuates the spool means from its fir to its second position.

  15. Recycle Rate in a Pulsed, Optically Pumped Rubidium Laser

    SciTech Connect (OSTI)

    Miller, Wooddy S.; Sulham, Clifford V.; Holtgrave, Jeremy C.; Perram, Glen P.

    2010-10-08

    A pulsed, optically pumped rubidium laser operating in analogy to the diode pumped alkali laser (DPAL) system at pump intensities as high as 750 kW/cm{sup 2} has been demonstrated with output energies of up to 13 {mu}J/pulse. Output energy is dramatically limited by spin-orbit relaxation rates under these high intensity pump conditions. More than 250 photons are available for every rubidium atom in the pumped volume, requiring a high number of cycles per atom during the 2-8 ns duration of the pump pulse. At 550 Torr of ethane, the spin-orbit relaxation rate is too slow to effectively utilize all the incident pump photons. Indeed, a linear dependence of output energy on pump pulse duration for fixed pump energy is demonstrated.

  16. Multi-stage quantum absorption heat pumps

    E-Print Network [OSTI]

    Luis A. Correa

    2014-01-16

    It is well known that heat pumps, while being all limited by the same basic thermodynamic laws, may find realization on systems as "small" and "quantum" as a three-level maser. In order to quantitatively assess how the performance of these devices scales with their size, we design generalized $N$-dimensional ideal heat pumps by merging $N-2$ elementary three-level stages. We set them to operate in the absorption chiller mode between given hot and cold baths, and study their maximum achievable cooling power and the corresponding efficiency as a function of $N$. While the efficiency at maximum power is roughly size-independent, the power itself slightly increases with the dimension, quickly saturating to a constant. Thus, interestingly, scaling up autonomous quantum heat pumps does not render a significant enhancement beyond the optimal double-stage configuration.

  17. Frostless heat pump having thermal expansion valves

    DOE Patents [OSTI]

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

    2002-10-22

    A heat pump system having an operable relationship for transferring heat between an exterior atmosphere and an interior atmosphere via a fluid refrigerant and further having a compressor, an interior heat exchanger, an exterior heat exchanger, a heat pump reversing valve, an accumulator, a thermal expansion valve having a remote sensing bulb disposed in heat transferable contact with the refrigerant piping section between said accumulator and said reversing valve, an outdoor temperature sensor, and a first means for heating said remote sensing bulb in response to said outdoor temperature sensor thereby opening said thermal expansion valve to raise suction pressure in order to mitigate defrosting of said exterior heat exchanger wherein said heat pump continues to operate in a heating mode.

  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. Thermo-Mechanical Pumps for Superfluid Helium

    SciTech Connect (OSTI)

    Kaiser, G.; Schumann, B.; Stangl, R.; Binneberg, A.; Wobst, E. [Institut fuer Luft- und Kaeltetechnik gGmbH, Hauptbereich Kaelte- und Tieftemperaturtechnik, Bertolt-Brecht-Allee 20, Dresden, D-01219 (Germany)

    2004-06-23

    In Alpha Magnetic Spectrometer-02 (AMS-02) experiment a large scale superconducting magnet separates charged particles coming from cosmic radiation. Two thermo-mechanical pumps (TMP), operating by use of the Fountain-effect, will be used to supply the current leads and the magnet coil after quench with superfluid helium. These TMP are currently under development at ILK Dresden. Due to the applications the TMP are required to pump a mass flow of 0.2 g/s. After introduction into the basic principles essential for TMP function, we report on the development and tests of the TMP for AMS-02.

  20. High aspect ratio, remote controlled pumping assembly

    DOE Patents [OSTI]

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

    1995-11-14

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

  1. High aspect ratio, remote controlled pumping assembly

    DOE Patents [OSTI]

    Brown, Steve B. (Livermore, CA); Milanovich, Fred P. (Lafayette, CA)

    1995-01-01

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

  2. Optical pumping via incoherent Raman transitions

    E-Print Network [OSTI]

    A. D. Boozer; R. Miller; T. E. Northup; A. Boca; H. J. Kimble

    2007-10-04

    A new optical pumping scheme is presented that uses incoherent Raman transitions to prepare a trapped Cesium atom in a specific Zeeman state within the 6S_{1/2}, F=3 hyperfine manifold. An important advantage of this scheme over existing optical pumping schemes is that the atom can be prepared in any of the F=3 Zeeman states. We demonstrate the scheme in the context of cavity quantum electrodynamics, but the technique is equally applicable to a wide variety of atomic systems with hyperfine ground-state structure.

  3. Heat Pump Application- An Industrial Case Study 

    E-Print Network [OSTI]

    Shukla, D.; Umoh, R.

    1990-01-01

    stream_source_info ESL-IE-90-06-17.pdf.txt stream_content_type text/plain stream_size 18112 Content-Encoding ISO-8859-1 stream_name ESL-IE-90-06-17.pdf.txt Content-Type text/plain; charset=ISO-8859-1 HEAT PUMP... APPLICATION- AN INDUSTRIAL CASE STUDY Deepak Shukla, Ph.D. Sr. Process Engineer TENSA services, Inc. Houston, Texas ABSTRACT The economics of heat pumping across a distillation column is usually dependent on the amount of additional compressor work...

  4. Superfluorescence in a continuously pumped medium

    SciTech Connect (OSTI)

    Bolda, E.L.; Chiao, R.Y.; Garrison, J.C.

    1995-10-01

    Numerical simulations of an extended sample of three-level atoms with slow dipole dephasing exhibit a superfluorescent pulse shortly after incoherent pumping begins. The operator Maxwell-Bloch equations are simulated by classical Langevin equations. The counterpropagating fields are solved for in the (one-dimensional) limit of the Fresnel number near unity, with open-end boundary conditions. An initial, ``quiet`` buildup of the inversion is followed by superfluorescence. Oscillation of the populations, coherences, and fields is observed. The superfluorescence delay time is compared with analytical predictions made in the linear regime. A transition to amplified spontaneous emission is found as the pump rate is decreased.

  5. Chapter 9 -Irrigation Equipment Safety The following suggestions are aimed at ensuring the safety of the irrigator as well as

    E-Print Network [OSTI]

    Tullos, Desiree

    that will stop them before damage occurs from overload, overheating, loss of oil pressure or runaway (if pump, overvoltage, undervoltage, phase imbalance in three-phase electrical systems, phase failure, low current off the electric motor or engine it there is a break in the suction or loss of pressure in the main

  6. Extreme high-head portables provide more pumping options

    SciTech Connect (OSTI)

    Fiscor, S.

    2006-10-15

    Three years ago, Godwin Pumps, one of the largest manufacturers of portable pumps, introduced its Extreme Duty High Lift (HL) series of pumps and more mines are finding unique applications for these pumps. The Extreme HL series is a range single-stage Dri-Prime pumps with heads up to 600 feet and flows up to 5,000 gallons per minute. The American Coal Co.'s Galatia mine, an underground longwall mine in southern Illinois, used an HL 160 to replace a multiple-staged centrifugal pump. It provided Galatia with 1,500 gpm at 465 ft. 3 photos.

  7. Fundamental and experimental studies of ion-drag pumping 

    E-Print Network [OSTI]

    Castaneda, Javier Augusto

    1992-01-01

    investigated the pumping of transformer oil by an ion-drag pump. They achieved velocities close to 14 cm/s using screen type electrodes. General Electric Company (1983) used Sharbaugh and Walker's ion-drag pump design and built it into a 167-kVA distribufion... experimentally the ion-drag pumping of Refrigerant 11, to develop a general one-dimensional theoretical model for ion-drag pumping, and to investigate the ionization and emission modes of ion-drag pumping using dodecylbenzene as a working fluid. Experimentally...

  8. Southern Ocean nutrient trapping and the efficiency of the biological pump

    E-Print Network [OSTI]

    Primeau, Francois W; Holzer, Mark; DeVries, Timothy

    2013-01-01

    ciency of the biological pump, Geophys. Res. Lett. , 39,Preformed phosphate, soft tissue pump and atmospheric CO 2 ,efficiency of the biological pump Franc ois W. Primeau, 1

  9. Application analysis of ground source heat pumps in building space conditioning

    E-Print Network [OSTI]

    Qian, Hua

    2014-01-01

    methods for ground-source heat pumps. in ASHRAE Summergas emission savings of ground source heat pump systems inheat exchangers for ground-source heat pumps: A literature

  10. Comparison of energy efficiency between variable refrigerant flow systems and ground source heat pump systems

    E-Print Network [OSTI]

    Hong, Tainzhen

    2010-01-01

    Performance of ground source heat pump system in a near-zerosimulation tool for ground- source heat pump system designflow systems and ground source heat pump systems Abstract

  11. Going with the flow: Life cycle costing for industrial pumping systems

    E-Print Network [OSTI]

    Tutterow, Vestal; Hovstadius, Gunnar; McKane, Aimee

    2002-01-01

    Costs Energy Costs Pump Maintenance Costs Other Maintenanceand Identify pumps with high maintenance costs. Since thePump Downtime Operating Energy Maintenance Figure 1. Example life cycle costs

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

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

    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...

  13. Reducing Pump Power Consumption by 40% (1000 KW) Through Improved Pump Management in a Central Plant 

    E-Print Network [OSTI]

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

    1998-01-01

    Plant Descri~tion. At the Central Utility Plant, the chilled water system does not have secondary pumps. Primary pumps are used to serve both the in-plant chilled water system (chillers and other components) and the loops at required pump head... chillers 1 - 4 inlet sub-common header and centrifugal chillers 9 - 12 inlet sub-common header (this common header can be enabled or disabled by manual valves on it). Four chilled water loops (East, South, Central and West) serving the main campus...

  14. Brayton Cycle Heat Pump for VOC Control 

    E-Print Network [OSTI]

    Kovach, J. L.

    1990-01-01

    The first full size continuous operation Brayton Cycle Heat Pump (1)(2)(3) application for VOC recovery occurred in 1988. The mixed solvent recovery system was designed and supplied by NUCON for the 3M facility in Weatherford, OK (4). This first...

  15. Covered Product Category: Residential Geothermal Heat Pumps

    Broader source: Energy.gov [DOE]

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

  16. TANK 32 EVAPORATOR FEED PUMP TRANSFER ANALYSIS

    SciTech Connect (OSTI)

    Tamburello, D; Richard Dimenna, R; Si Lee, S

    2009-01-27

    The transfer of liquid salt solution from Tank 32 to an evaporator is to be accomplished by activating the evaporator feed pump, with the supernate surface at a minimum height of approximately 74.4 inches above the sludge layer, while simultaneously turning on the downcomer with a flow rate of 110 gpm. Previously, activation of the evaporator feed pump was an isolated event without any other components running at the same time. An analysis of the dissolved solution transfer has been performed using computational fluid dynamics (CFD) methods to determine the amount of entrained sludge solids pumped out of the tank toward the evaporator with the downcomer turned on. The analysis results shows that, for the minimum tank liquid level of 105 inches above the tank bottom (which corresponds to a liquid depth of 74.4 inches above the sludge layer), the evaporator feed pump will contain less than 0.1 wt% sludge solids in the discharge stream, which is an order of magnitude less than the 1.0 wt% undissolved solids (UDS) loading criteria to feed the evaporator. Lower liquid levels with respect to the sludge layer will result in higher amounts of sludge entrainment due to the increased plunging jet velocity from the downcomer disturbing the sludge layer.

  17. Integrated heat pump and heat storage system

    SciTech Connect (OSTI)

    Katz, A.

    1983-09-13

    An integrated heat pump and heat storage system is disclosed comprising a heat pump, a first conduit for supplying return air from an enclosure to the heat pump, a second conduit for supplying heated air from the heat pump to the enclosure, heat storage apparatus. A first damper is operative in a first orientation to permit return air from the enclosure to enter the first conduit and to prevent return air from passing through the heat storage apparatus and operative in a second orientation to cause return air to pass through the heat storage apparatus for being heated thereby before entering the first conduit. A second damper is operative in a first orientation to cause heated air from the second conduit to pass through the heat storage apparatus for giving up a portion of its heat for storage and operative in a second orientation to prevent heated air from the second conduit from passing through the heat storage apparatus and to permit the heated air from the second conduit to reach the enclosure. The heat storage apparatus may comprise phase change materials.

  18. Heat pump having improved defrost system

    DOE Patents [OSTI]

    Chen, Fang C. (Knoxville, TN); Mei, Viung C. (Oak Ridge, TN); Murphy, Richard W. (Knoxville, TN)

    1998-01-01

    A heat pump system includes, in an operable relationship for transferring heat between an exterior atmosphere and an interior atmosphere via a fluid refrigerant: a compressor; an interior heat exchanger; an exterior heat exchanger; an accumulator; and means for heating the accumulator in order to defrost the exterior heat exchanger.

  19. Ground Loops for Heat Pumps and Refrigeration 

    E-Print Network [OSTI]

    Braud, H. J.

    1986-01-01

    Ground loops are used for water source heat pumps. Refrigeration can be put on a ground loop. Water-cooled condensing units are more efficient than air-cooled, and they can be put indoors. Indoor location makes piping for desuperheater hot water...

  20. Heat pump having improved defrost system

    DOE Patents [OSTI]

    Chen, F.C.; Mei, V.C.; Murphy, R.W.

    1998-12-08

    A heat pump system includes, in an operable relationship for transferring heat between an exterior atmosphere and an interior atmosphere via a fluid refrigerant: a compressor; an interior heat exchanger; an exterior heat exchanger; an accumulator; and means for heating the accumulator in order to defrost the exterior heat exchanger. 2 figs.

  1. Geothermal Heat Pumps Produce Dramatic Savings 

    E-Print Network [OSTI]

    Niess, R. C.

    1983-01-01

    applications. One approach now expanding the direct use of geothermal energy is coupling this energy resource with high temperature, industrial-type water-to water heat pumps. Such systems can tap geothermal energy in 50 F to 120 F water, normally available...

  2. Hybrid Heat Pump Design and Application 

    E-Print Network [OSTI]

    Wagner, J. R.; Koebberman, W. F.

    1985-01-01

    The Hybrid Heat Pump (HHP) converts industrial waste heat into process steam. Waste heat at temperatures as low as approximately 200°F can be used. Steam output covers a range between 12,000 Ib/h and 50,000 Ib/h, depending on the application...

  3. Real-time data acquisition and telemetry based irrigation control system

    DOE Patents [OSTI]

    Slater, John M.; Svoboda, John M.

    2005-12-13

    A data acquisition and telemetry based control system for use in facilitating substantially real time management of an agricultural irrigation system. The soil moisture sensor includes a reader and a plurality of probes. The probes each include an electronic circuit having a moisture sensing capacitor in operative communication with the soil whose moisture is to be measured. Each probe also includes a receive/transmit antenna and the reader includes a transmit/receive antenna, so that as the reader passes near the probe, the reader transmits a digital excitation signal to the electronic circuit of the biodegradable probe via an inductive couple formed between the transmit/receive antenna of the reader and the receive/transmit coil of the probe. The electronic circuit uses an energy component of the excitation signal to generate a digital data signal which indicates the moisture content of the soil adjacent to the moisture sensing capacitor. The probe sends the data signal to the reader which then uses the data signal to develop a corresponding set of watering instructions which are then transmitted to a control module in communication with the irrigation system. The control module sends corresponding control signals to nozzles of the irrigation system causing the irrigation system to disperse water in a manner consistent with the moisture content data transmitted by the probes to the reader. Because the irrigation system moves continuously through the field to be irrigated, the moisture content data acquisition and resultant water dispersal by the irrigation system occur substantially in real time.

  4. Viability of Small Wind Distributed Generation for Farmers Who Irrigate (Poster)

    SciTech Connect (OSTI)

    Meadows, B.; Forsyth, T.; Johnson, S.; Healow, D.

    2010-05-01

    About 14% of U.S. farms are irrigated, representing 55 million acres of irrigated land. Irrigation on these farms is a major energy user in the United States, accounting for one-third of water withdrawals and 137 billion gallons per day. More than half of the Irrigation systems use electric energy. Wind energy can be a good choice for meeting irrigation energy needs. Nine of the top 10 irrigation states (California, Texas, Idaho, Arkansas, Colorado, Nebraska, Arizona, Kansas, Washington, and Oregon) have good to excellent wind resources. Many rural areas have sufficient wind speeds to make wind an attractive alternative, and farms and ranches can often install a wind energy system without impacting their ability to plant crops and graze livestock. Additionally, the rising and uncertain future costs of diesel, natural gas, and even electricity increase the potential effectiveness for wind energy and its predictable and competitive cost. In general, wind-powered electric generation systems generate more energy in the winter months than in the summer months when most crops need the water. Therefore, those states that have a supportive net metering policy can dramatically impact the viability of an onsite wind turbine. This poster presentation highlights case studies that show favorable and unfavorable policies that impact the growth of small wind in this important sector and demonstrate how net metering policies affect the viability of distributed wind generation for farmers who irrigate.

  5. Heat Pump Swimming Pool Heaters | Department of Energy

    Office of Environmental Management (EM)

    pool's water, the water drawn from the pool passes through a filter and the heat pump heater. The heat pump heater has a fan that draws in the outside air and directs it over the...

  6. Pumping System Measurements To Estimate Energy Savings: Why and How 

    E-Print Network [OSTI]

    Casada, D.

    2007-01-01

    Measuring performance parameters (flow rate, pressures, and power) for existing systems is essential to understanding how both the pump(s) and system are actually performing. Examples of reasons why actual measurements are critical and practical...

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

    Energy Savers [EERE]

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

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

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

    Installing and Operating an Efficient Swimming Pool Pump Installing and Operating an Efficient Swimming Pool Pump May 29, 2012 - 7:54pm Addthis Photo courtesy iStockphoto.com Photo...

  9. Visualizing Unsteady Vortical Behavior of a Centrifugal Pump Mathias Otto

    E-Print Network [OSTI]

    Visualizing Unsteady Vortical Behavior of a Centrifugal Pump Mathias Otto University of Magdeburg. The given data represents a high resolution simulation of a centrifugal pump used to transport liquids

  10. Thermoeconomic Analysis of a Solar Heat-Pump System 

    E-Print Network [OSTI]

    Gao, Y.; Wang, S.

    2006-01-01

    This paper introduces a solar energy heat-pump system and analyzes the thermoeconomics. The results show that the solar energy heat-pump system can be operated in different modes and used for room heating in winter and ...

  11. DOE Webinar - Residential Geothermal Heat Pump Retrofits (Presentation)

    SciTech Connect (OSTI)

    Anderson, E. R.

    2010-12-14

    This presentation was given December 14, 2010, as part of DOE's Webinar series. The presentation discusses geothermal heat pump retrofits, technology options, and an overview of geothermal energy and geothermal heat pumps.

  12. Pump and Circumstance: Robert Boyle's Literary Technology Steven Shapin

    E-Print Network [OSTI]

    Shapin, Steven

    Pump and Circumstance: Robert Boyle's Literary Technology Steven Shapin Social Studies of Science was a technique for creating a public and for constituting authentic knowledge. Pump and Circumstance: Robert

  13. New Water Booster Pump System Reduces Energy Consumption by 80...

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

    in Pontiac, Michigan. In short, GM was able to replace five original 60- to 100-hp pumps with three 15-hp pumps whose speed could be adjusted to meet plant requirements. As a...

  14. Air-Source Heat Pump Basics | Department of Energy

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

    Basics Air-Source Heat Pump Basics August 19, 2013 - 11:03am Addthis Air-source heat pumps transfer heat between the inside of a building and the outside air. How Air-Source...

  15. CO2 Heat Pump Water Heater | Department of Energy

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

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

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

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

    size pump, you can consult a pool supplier's design chart. Using the chart, match the hydraulic characteristics of the pump to both the piping and the pool's flow characteristics....

  17. Performance of Horizontal Field Earth-Coupled Heat Pumps 

    E-Print Network [OSTI]

    Abbott, C. A.

    1986-01-01

    An alternative to traditional methods of residential heating and cooling is the heat pump. However, heat pumps which use the outside air as a heat source/sink become inefficient during the periods of highest demand. Another possible heat source...

  18. Pinch Application- Heat Pump Study in a Food Plant 

    E-Print Network [OSTI]

    Chao, Y. T.; Tripathi, P.

    1990-01-01

    was to appropriatly place and size the heat pump system in a food plant. A change in the process configuration was recommended as a result of this study to increase the heat pump profitability and to improve the product quality....

  19. Multi-function fuel-fired heat pump CRADA

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

    Multi-function fuel-fired heat pump CRADA 2014 Building Technologies Office Engine-driven heat Peer Review pump provides cooling, heating, water heating, and electrical power CRADA...

  20. Efficient Engine-Driven Heat Pump for the Residential Sector

    Broader source: Energy.gov [DOE]

    Building on previous work on an 11-ton packaged natural gas heat pump, this project will develop hardware and software for engine and system controls for a residential gas heat pump system that...