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1

Irrigation pumping using geothermal energy  

DOE Green Energy (OSTI)

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

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

1982-08-01T23:59:59.000Z

2

Crops reap benefits of Pantex irrigation system | National Nuclear Security  

National Nuclear Security Administration (NNSA)

Crops reap benefits of Pantex irrigation system | National Nuclear Security Crops reap benefits of Pantex irrigation system | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog The National Nuclear Security Administration Crops reap benefits of Pantex irrigation system Home > content > Crops reap benefits of Pantex irrigation system Crops reap benefits of Pantex irrigation system

3

Effects of irrigation on crops and soils with Raft River geothermal water  

DOE Green Energy (OSTI)

The Raft River Irrigation Experiment investigated the suitability of using energy-expended geothermal water for irrigation of selected field-grown crops. Crop and soil behavior on plots sprinkled or surface irrigated with geothermal water was compared to crop and soil behavior on plots receiving water from shallow irrigation wells and the Raft River. In addition, selected crops were produced, using both geothermal irrigation water and special management techniques. Crops irrigated with geothermal water exhibited growth rates, yields, and nutritional values similar to comparison crops. Cereal grains and surface-irrigated forage crops did not exhibit elevated fluoride levels or accumulations of heavy metals. However, forage crops sprinkled with geothermal water did accumulate fluorides, and leaching experiments indicate that new soils receiving geothermal water may experience increased salinity, exchangeable sodium, and decreased permeability. Soil productivity may be maintained by leaching irrigations.

Stanley, N.E.; Schmitt, R.C.

1980-01-01T23:59:59.000Z

4

On-farm US irrigation pumping plants. Final report  

DOE Green Energy (OSTI)

Over 473,000 on-farm pumping plants are being used to pump and deliver irrigation water in the United States. The distribution of these units by geographic regions and potential wind power zones was determined. Over 60 percent of the pumping units in the US are smaller than 37.3 kW (50 horsepower) in size and only 9.4 percent of the units are larger than 74.6 kW in size (100 horsepower). Over 49 percent of these pumps (231,440) are located in the six Great Plains States of Colorado, Kansas, Nebraska, New Mexico, Oklahoma and Texas. This area also has the largest potential wind power in the US during the primary irrigation season. Over 51 percent of the pumping units are located in wind zones having a potential average wind power greater than 250 W/m/sup 2/ at an elevation of 50 meters. However, only 6.5 percent of the units are located in the largest potential average wind power zone (> 400 W/m/sup 2/ at 50 meters). In general, those areas which have greater potential wind power, have larger sized pumping units.

Gilley, J.R.

1981-03-01T23:59:59.000Z

5

Short-term dynamics of soil carbon, microbial biomass, and soil enzyme activities as compared to longer-term effects of tillage in irrigated row crops  

E-Print Network (OSTI)

rates by tillage and crop rotation: a global data analysis.of tillage in irrigated row crops Daniel Geisseler & Williamthe cropping season in all crop sequences D. Geisseler (*) :

Geisseler, Daniel; Horwath, William R.

2009-01-01T23:59:59.000Z

6

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

E-Print Network (OSTI)

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

Hopmans, Jan W; Maurer, Edwin P

2008-01-01T23:59:59.000Z

7

Application of wind energy to Great Plains irrigation pumping. Final report  

DOE Green Energy (OSTI)

Wind energy systems without energy storage for irrigation in the Great Plains are studied. Major uses of irrigation energy were identified as pumping for surface distribution systems, which could be supplied by variable flow, and pumping for sprinkler systems using constant flow. A computer program was developed to simulate operation of wind-powered irrigation wells. Pumping by wind turbine systems was simulated for 2 variable and 2 constant flow operational modes in which auxiliary motors were used in 3 of the modes. Using the simulation program, the well yields and maximum pumping rates among the 4 modes as a function of drawdown in a typical well are compared.

Hagen, L.J.; Lyles, L.; Skidmore, E.L.

1979-10-01T23:59:59.000Z

8

Effect of cropping strategies on the irrigation water productivity of durum wheat Khaledian, MRa, b  

E-Print Network (OSTI)

climate with water deficiency. Author-produced version of the article published in Plant Soil Environ results in significant water savings. The highest irrigation water Author-produced version of the articleEffect of cropping strategies on the irrigation water productivity of durum wheat Khaledian, MRa, b

9

Response of Peanuts to Irrigation Management at Different Crop Growth Stages  

E-Print Network (OSTI)

Past irrigation research on peanuts has shown that when the plant is exposed to soil moisture stress at different crop growth stages, different responses seem to exist between the Spanish and the Florunner peanut varieties. The Spanish peanuts appear more susceptible to soil moisture stress during the blooming and pegging stage, while the Florunners seem more susceptible during the late maturation stage. The objective of this experiment was to determine the optimum irrigation schedule for peanuts at different crop growth stages for the Spanish and the Florunner varieties. The yield of the two varieties was evaluated under seven different irrigation treatments including a "no stress" check treatment and a dryland treatment. Each treatment had a different schedule of either irrigating or stressing the peanut plant during one or more of three crop growth stages. The three crop growth stages were: (1) pegging; (2) early maturation; and (3) late maturation. Rainfall during the vegetative and blooming stage ensured adequate moisture for both of the crop growth stages. Evapotranspiration was monitored throughout the life cycle for both peanut varieties. The evapotranspiration was determined using a soil moisture balance equation. Plant growth in the form of dry matter accumulation and leaf area index was also studied for the Spanish variety. No significant differences in the leaf area index existed between the treatments. The dry matter growth analysis showed that an irrigation during the pegging stage resulted in a faster pod weight accumulation during the early maturation stage than if no irrigation occurred during that stage. The yield and evapotranspiration results showed that differences existed between the two peanut varieties. First, for the Spanish variety, the results indicated that soil moisture is needed during the pegging stage to obtain near maximum yields. Treatments with an irrigation during the pegging stage had a greater evapotranspiration and larger yields, than the treatments without an irrigation during this stage. Second, if an irrigation is made during the pegging stage, an additional irrigation during the early maturation stage is unnecessary. Third, an irrigation during the late maturation stage will increase yield if dry climatic conditions normally exist during this stage. In the case of the Florunner variety, the yield results indicated that moisture stress should occur in no more than one of the crop growth stages if yield reductions are to be minimized. Also, an adequate supply of soil moisture during the late maturation stage is absolutely necessary in order to obtain maximum yields for Florunner peanuts. Treatments which had an irrigation during the late maturation stage had a steady evapotranspiration rate during this crop growth stage and had near maximum yields. Treatments which showed a decrease in the evapotranspiration rate during the late maturation stage produced a significantly lower yield.

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

1980-12-01T23:59:59.000Z

10

Irrigation data base for Arizona  

DOE Green Energy (OSTI)

Determining the locations in the U.S. where solar energy might be used for irrigation was proposed. One of the first steps in determining these locations is to establish a data base for the agricultural states that extensively use irrigation. The data base must include information on the crops grown, the irrigation wells, and the irrigation pumps. The results of an effort to establish such a data base for the state of Arizona are presented.

Hall, I.J.; Vandevender, S.G.

1978-01-01T23:59:59.000Z

11

Hyperspectral remote sensing analysis of short rotation woody crops grown with controlled nutrient and irrigation treatments.  

SciTech Connect

Abstract - Hyperspectral remote sensing research was conducted to document the biophysical and biochemical characteristics of controlled forest plots subjected to various nutrient and irrigation treatments. The experimental plots were located on the Savannah River Site near Aiken, SC. AISA hyperspectral imagery were analysed using three approaches, including: (1) normalized difference vegetation index based simple linear regression (NSLR), (2) partial least squares regression (PLSR) and (3) machine-learning regression trees (MLRT) to predict the biophysical and biochemical characteristics of the crops (leaf area index, stem biomass and five leaf nutrients concentrations). The calibration and cross-validation results were compared between the three techniques. The PLSR approach generally resulted in good predictive performance. The MLRT approach appeared to be a useful method to predict characteristics in a complex environment (i.e. many tree species and numerous fertilization and/or irrigation treatments) due to its powerful adaptability.

Im, Jungho; Jensen, John R.; Coleman, Mark; Nelson, Eric

2009-04-01T23:59:59.000Z

12

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

Science Conference Proceedings (OSTI)

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

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

2005-12-01T23:59:59.000Z

13

An Economic Feasibility Study of Irrigated Crop Production in the Pecos Valley of Texas  

E-Print Network (OSTI)

Public concern over the potential effects of energy price increases on the U.S. food and fiber system has been dramatically justified in the Trans Pecos region of Texas where a 450 percent increase in the price of natural gas was followed by the idling of thousands of irrigated acres and the departure of many of the farmers. This study was conducted to provide the answers to two questions: (l) Can an irrigated farm survive in the Trans Pecos? and (2) If it survives, how profitable will it be? Coyanosa, one of the irrigated areas of the Trans Pecos, was selected as a study area, and the St. Lawrence area of the Edwards Plateau was selected to provide comparative estimates of survival and profitability. A modified MOTAD linear programming-simulation model was developed to generate estimates of survival and profitability by recursive simulation of multiple time periods, as follows: (l) development of a farm plan, (2) generation of stochastic prices and yields, (3) simulation and evaluation of the farm plan in operation, and (4) update of the planning situation to reflect adjustments in expected prices, expected yields, and credit restrictions. The model then returns to step l for simulation of the next time period. The model was applied to the Coyanosa and St. Lawrence regions under alternative future scenarios for inflation rates, energy prices, crop prices, and interest rates. The Coyanosa model was also applied under most likely scenario conditions to analyze the effects of alternative levels of risk-aversion and alternative tenure situations. Each application included 20 simulations of a 1O year planning horizon to develop a distribution of outcome. The Coyanosa farm survived about 8 years under the optimistic scenario and 5 years under all other scenarios. The most likely rate of survival was 20-30 percent with a range of 1O percent to 65 percent for other scenarios. The average life and rate of survival was higher for the St. Lawrence farm under all scenarios. The internal rate of return on equity capital for the Coyanosa farm was 36.8 percent under the optimistic scenario and negative under all other scenarios. The rate of return for St. Lawrence was not significantly different for the optimistic scenario; however, it was higher than Coyanosa for all other scenarios. The level of risk-aversion described by the baseline model appears to be relatively high compared to other studies, but there are indications that it may be relatively low for the St. Lawrence area. Both rate of return and survival increased in response to decreased levels of risk-aversion, however, the latter result may be related to the specification of the risk restraint. Land purchase provided higher estimates of survival and profitability than rental or combined rental and purchase. These results seem to relate to the finding that traditional crop share rental arrangements are unsatisfactory for the Coyanosa area. It was concluded from this study that (l) survival and profitability of irrigated crop production in the Coyanosa area will depend greatly upon future levels of inflation, energy prices, crop prices, and interest rates, (2) survival and profitability for Coyanosa will most likely be lower than St. Lawrence, and (3) land purchase provides greater potential survival and profitability than traditional crop share rental arrangements. These conclusions were limited by need for additional research regarding the effects of beginning equity levels and consideration of risk in farm planning. Conclusions were also limited by the data and assumptions utilized in the study.

Condra, G. D.; Lacewell, R. D.; Hardin, D. C.; Lindsey, K.; Whitson, R. E.

1979-03-01T23:59:59.000Z

14

Effects of Irrigating with Treated Oil and Gas Product Water on Crop Biomass and Soil Permeability  

DOE Green Energy (OSTI)

Demonstrating effective treatment technologies and beneficial uses for oil and gas produced water is essential for producers who must meet environmental standards and deal with high costs associated with produced water management. Proven, effective produced-water treatment technologies coupled with comprehensive data regarding blending ratios for productive long-term irrigation will improve the state-of-knowledge surrounding produced-water management. Effective produced-water management scenarios such as cost-effective treatment and irrigation will discourage discharge practices that result in legal battles between stakeholder entities. The goal of this work is to determine the optimal blending ratio required for irrigating crops with CBNG and conventional oil and gas produced water treated by ion exchange (IX), reverse osmosis (RO), or electro-dialysis reversal (EDR) in order to maintain the long term physical integrity of soils and to achieve normal crop production. The soils treated with CBNG produced water were characterized with significantly lower SAR values compared to those impacted with conventional oil and gas produced water. The CBNG produced water treated with RO at the 100% treatment level was significantly different from the untreated produced water, while the 25%, 50% and 75% water treatment levels were not significantly different from the untreated water. Conventional oil and gas produced water treated with EDR and RO showed comparable SAR results for the water treatment technologies. There was no significant difference between the 100% treated produced water and the control (river water). The EDR water treatment resulted with differences at each level of treatment, which were similar to RO treated conventional oil and gas water. The 100% treated water had SAR values significantly lower than the 75% and 50% treatments, which were similar (not significantly different). The results of the greenhouse irrigation study found the differences in biomass production between each soil were significant for Western Wheatgrass and Alfafla. The Sheridan sandy loam soil resulted in the highest production for western wheatgrass and alfalfa while the X-ranch sandy loam had the lowest production rate for both plants. Plant production levels resulting from untreated CBNG produced water were significantly higher compared to untreated conventional oil and gas produced water. However, few differences were found between water treatments. The biomass produced from the greenhouse study was analyzed for elemental composition and for forage value. Elemental composition indentified several interesting findings. Some of the biomass was characterized with seemly high boron and sodium levels. High levels of boron found in some of the biomass was unexpected and may indicate that alfalfa and western wheatgrass plants may have been impacted by either soil or irrigation water containing high boron levels. Plants irrigated with water treated using EDR technology appeared to contain higher levels of boron with increased levels of treatment. Forage evaluations were conducted using near infrared reflectance spectroscopy. The data collected show small differences, generally less than 10%, between produced water treatments including the no treatment and 100% treatment conditions for each plant species studied. The forage value of alfalfa and western wheatgrass did not show significant tendencies dependent on soil, the amount of produced water treatment, or treatment technology.

Terry Brown; Jeffrey Morris; Patrick Richards; Joel Mason

2010-09-30T23:59:59.000Z

15

Nitrogen supply from fertilizer and legume cover crop in the transition to no-tillage for irrigated row crops  

E-Print Network (OSTI)

152–155 CTIC (2004) National crop residue management survey.15 labeled legume cover crop. Soil Sci Soc Am J 53:822–827fertilizer and legume cover crop in the transition to no-

Doane, Timothy A.; Horwath, William R.; Mitchell, Jeffrey P.; Jackson, Jim; Miyao, Gene; Brittan, Kent

2009-01-01T23:59:59.000Z

16

CliCrop: a Crop Water-Stress and Irrigation Demand Model for an Integrated Global Assessment Model Approach  

E-Print Network (OSTI)

This paper describes the use of the CliCrop model in the context of climate change general assessment

Fant, C.A.

17

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

E-Print Network (OSTI)

NeSmith, 1991. Temperature and crop development, p.5–29. In:Using reference evapotranspiration and crop coefficientsto estimate crop evapotranspiration for agronomic crops,

Hopmans, Jan W; Maurer, Edwin P

2008-01-01T23:59:59.000Z

18

The Dynamics of Irrigated Perennial Crop Production With Applications to the Murray-Darling Basin of Australia  

E-Print Network (OSTI)

severe damages to U.S. crop yields under climate change,”demand for perennial crops is identified by systematicallyspace approach to perennial crop supply analysis,” American

Franklin, Bradley

2013-01-01T23:59:59.000Z

19

Estimated Farm Level Benefits of Improved Irrigation Efficiency  

E-Print Network (OSTI)

There are about 15 million acres of cropland in the U.S. that are irrigated from aquifers which are incurring declining water levels (sloggett). This is primarily in the Great Plains Region where irrigation water is pumped from the Ogallala Aquifer. Mining from the aquifer is estimated at 14 million acre feet per year (Frederick and Hanson). The declining groundwater supply increases pumping lift and reduces well yields. Concurrently, there has been a dramatic increase in the cost of energy for pumping since 1973. For example, in the Trans Pecos Region of Texas, natural gas prices increased 450% from 1972 to 1975. Energy has become one of the most important factors in irrigated crop production. A 1975 study showed that 53% of the total variable costs of producing corn in the Great Plains was energy related (Skold). The sensitivity of irrigated agriculture to increased fuel costs and declining groundwater levels has provided incentives for irrigated farmers to investigate alternative crop rotations and opportunities to improve irrigation water pumping and distributional efficiencies. The emphasis of this report is to estimate the value to an irrigated farmer on the Texas High Plains of improving irrigation water distribution efficiency. One means of improving the water use efficiency is to implement water conserving techniques. The main purpose of these techniques is to maximize crop production by minimizing the amount of water lost through the production systems. The major sources 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 enhance the efficiency of water used for irrigation in the region. On-farm irrigation efficiency statewide for Texas has been estimated between 60 and 708 (Wyatt,1981). The implementation of advanced irrigation application techniques could potentially increase this efficiency up to 98% (Lyle & Bordovsky,1980). Furrow irrigation and sprinkler irrigation are the two major irrigation systems currently in use. Techniques designed to improve furrow efficiency include alternate furrow irrigation, furrow diking, and surge flow. Alternate furrow irrigation improves the timeliness of irrigation applications and increases lateral water movement thereby reducing deep percolation losses. Alternate furrow irrigation can be used with furrow diking or row dams on non-irrigated furrows to reduce rainfall runoff and soil erosion. The surge flow technique delivers large surges of water into the furrow on an intermittent cycle to reduce percolation losses at the upper end of the field. Sprinkler irrigation is the second major distribution system used for crop production primarily on mixed and sandy soils in the region. The use of these systems have increased tremendously over the past 25 years. This growth in the use of sprinkler irrigation systems is reflected in the increase for Texas from 668 thousand acres in 1958 to 2.2 million acres in 1979 (Texas Department of Water Resources). With the rapid rise in the relative price of energy during the 1970's, the emphasis of improving sprinkler efficiency has focused on both reducing their energy requirements and decreasing the amount of water lost through evaporation. One system which has been developed to meet these needs is the LEPA system or Low Energy Precision Application system (Lyle and Bordovsky,1980). This system operates by distributing water through drop tubes and low pressure emitters directly into the furrow as opposed to high pressure systems which utilize overhead sprinklers to distribute the water. In field trials of the LEPA system, measured application and distribution efficiencies averaged 98% and 96% respectively (Lyle et al., 1981).

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

1984-06-10T23:59:59.000Z

20

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

E-Print Network (OSTI)

The High Plains and Trans Pecos regions of Texas are semi-arid crop production regions located in the western part of the state. Relatively low levels of rainfall are supplemented by irrigation from groundwater supplies. These regions produced 51 percent of the cotton, 42 percent of the grain sorghum, and 48 percent of the wheat produced in Texas in 1974 (Texas Crop and Livestock Reporting Service). Considering only irrigated production these percentages were 75, 85, and 91 percent of Texas irrigated crop production for cotton, grain sorghum and wheat respectively. The importance of the High Plains and Trans Pecos regions to Texas crop production are not limited to these three crops, however, these statistics do serve to illustrate the significance of these regions in the Texas agricultural economy. While it is easily seen that the majority of irrigated production (for the crops mentioned) in Texas occurs in these regions, it should be noted that the importance of irrigation in the High Plains and Trans Pecos regional economies is much greater than these statistics show. On the High Plains 86 percent of the cotton, 90 percent of the grain sorghum, and 75 percent of the wheat produced in 1974 was harvested from irrigated acreage. Rainfall is somewhat less in the Trans Pecos region and 100 percent of the production of these crops was under irrigation (Texas Crop and Livestock Reporting Service). More than 60 percent of the value of agricultural crops in Texas is produced on irrigated land (Knutson, et.al.). Thus, the crop production of these regions is vitally important to the Texas and respective regional economies. Crop yields are heavily dependent on groundwater irrigation and extremely sensitive to any factor which may affect the availability or cost of irrigation water. Availability and price of fuel used in pumping groundwater are the critical factors which directly affect the availability and cost of irrigation water. About 39 percent of the energy used in Texas agriculture in 1973 was utilized in pumping water, compared to 18 percent used in machinery operations. Of this irrigation fuel, 76 percent was natural gas, the majority of which was consumed in the High Plains (Coble and LePori). Current supplies and reserves of natural gas have reached critically low levels in recent years and producers in the High Plains and Trans Pecos regions are faced with possible curtailments of, and certain price increases for their irrigation fuel (Patton and Lacewell). The threat of possible curtailment of fuel supplies during the irrigation season imposes greatly increased risk to irrigated crop production since curtailment of natural gas supplies during a critical water use period would significantly reduce yields (Lacewell). This threat would also increase financial risk and restrict availability of credit. Continued price increases for natural gas will increase costs of pumping irrigation water and hence the costs of irrigated crop production (Patton and Lacewell). The Ogalalla aquifer underlying the High Plains and many of the alluvium aquifers underlying the Trans Pecos are exhaustible; i.e., there is a negligible recharge from percolation and other sources. Therefore, even with unchanged natural gas prices, these groundwater supplies are being "economically" exhausted over time as pumping depth increases. Increases in fuel prices will lead to reduced groundwater pumpage and result in less groundwater being economically recoverable. Although life of the physical supply will be exhausted, a greater quantity of groundwater will be economically unrecoverable for irrigation without significant product price increases.

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

1978-01-01T23:59:59.000Z

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


21

PUMPS  

DOE Patents (OSTI)

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

Thornton, J.D.

1959-03-24T23:59:59.000Z

22

Precision Irrigators Network  

E-Print Network (OSTI)

Identifying best management practices (BMPs) promoting greater water use efficiency while maintaining crop yields is essential to the future of Texas cropping systems. Available water for irrigated crops is vital for sustaining crop production throughout the state. However, the availability of this water for irrigation is diminishing through competition by urban development and, in some regions such as the Edwards Aquifer, is falling under state regulation. The awareness and improvement of efficient irrigation and best management practices to conserve water while maintaining crop production will help preserve the aquifer levels and increase water savings to producers. One component of BMPs for conserving water use is the application of decision support systems (DSS) that are used as tools for implementing irrigation BMPs. This DSS guide was developed as a complement to TWDB Report 362, "Water Conservation Best Management Practices Guide," which is a more comprehensive report on water 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 (TXHPET), the Precision Irrigators Network (PIN) and the Crop Production Management (CroPMan) model. These DSS strive to promote grower awareness of water conservation strategies. Irrigation conservation strategies are proposed to result in savings of approximately 1.4 million acre-feet per year by 2060 (TWDB and TWRI). TXHPET operates 18 meteorological stations located in 15 counties across the Texas North Plains and Texas South Plains. The regional coverage of TXHPET is estimated at 4 million irrigated acres. The network offers insight to evapotranspiration (ET)-based crop water use that producers and agricultural consultants can reference when making decisions on when and how much to irrigate their crops. This information is available to data users via fax or online (http://txhighplainset.tamu.edu) and currently results in approximately 300,000 downloads or faxes annually. The PIN program was formed in 2004 with a goal of saving millions of gallons of water annually by reducing irrigation water use by as much as 20 percent over several years and currently supports several crops (corn, cotton, sorghum, wheat) in seven counties of South Central Texas. Cooperation of the PIN programs consists of area producers, Texas Agricultural Experiment Station researchers, Texas Cooperative Extension personnel, San Antonio Water System, Edwards Aquifer Authority, Texas Water Resources Institute, Texas Water Development Board, Uvalde County Underground Water Conservation District and Wintergarden Water Conservation District. The PIN database will allow producers to gain historical and real-time information for better management of irrigation scheduling. The PIN program estimates that when all irrigators in the Edwards Aquifer region implement limited irrigation scheduling, approximately 50,000 to 60,000 acre-feet of water can be saved per year and made available for purposes other than agriculture. CroPMan is a computer model designed to aid producers and agricultural consultants in optimizing crop management and maximizing production and profit through a production-risk approach. CroPMan will help growers identify limitations to crop yield, assist in making replant decisions and help recognize management practices that reduce the impact of agriculture on soil erosion and water quality. CroPMan is a Windows-based application program that can be downloaded from the CroPMan Web site (http://cropman.brc.tamus.edu).

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

2007-08-01T23:59:59.000Z

23

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

DOE Green Energy (OSTI)

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

Davis, A. E.

1979-01-01T23:59:59.000Z

24

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

E-Print Network (OSTI)

With rapidly changing conditions in production agriculture, the need for highly flexible and quickly applicable methods of analysis is emphasized. The purpose of this study was to develop such a model for a homogeneous production region in the Texas High Plains. A linear programming model was constructed whereby crop or input prices are readily adjustable. In addition, limitations on quantities of inputs available can easily be evaluated. The model contains cotton, grain sorghum, corn, wheat 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 alternative crop prices and input prices. Assuming average crop prices, current input prices and only variable costs of production, as the price of water was increased wheat shifted from irrigated to dryland production, then grain sorghum, cotton, corn and soybeans, in that order. The price of water was $71.75 per acre foot plus current pumping cost when all land shifted to dryland production. The same analysis, except variable and fixed costs both included, gave similar results relative to the sequence of crops that shift to dryland production as the price of water was increased. However, the shifts occurred at much lower water prices; i.e., at $24.47 per acre foot plus current pumping costs, all land had shifted to dryland production. This suggests that over the long run, irrigation in the Texas High Plains is quite sensitive to the price of energy used in pumping water. Further, there are strong implications relative to farmer's "ability to pay" for water imported to the High Plains from other regions. In this report, several scenarios including low, high and average crop prices and average and high input prices were evaluated.

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

1975-05-01T23:59:59.000Z

25

Weighing lysimeters aid study of water relations in tree and vine crops  

E-Print Network (OSTI)

Ross D, Smith M. 1998. Crop evapotranspiration: Guidelinesfor computing crop water requirements. FAO Irrigation andJ, Trout T, et al. 2000. Crop coefficients for mature peach

Johnson, R. Scott; Williams, Larry E.; Ayars, James E.; Trout, Tom J.

2005-01-01T23:59:59.000Z

26

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

DOE Green Energy (OSTI)

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

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

1995-03-01T23:59:59.000Z

27

A web application for cotton irrigation management on the U.S. Southern High Plains. Part I: Crop yield modeling and profit analysis  

Science Conference Proceedings (OSTI)

Irrigated cotton (Gossypium Hirsutum L.) production is a central part of west Texas agriculture that depends on the essentially non-renewable water resource of the Ogallala aquifer. Web-based decision support tools that estimate the profit effects of ... Keywords: Cotton, Decision support tools, Irrigation, Ogallala aquifer, Profit estimation

Steven Mauget, Gary Leiker, Shyam Nair

2013-11-01T23:59:59.000Z

28

Irrigation market for solar-thermal parabolic-dish systems  

Science Conference Proceedings (OSTI)

The potential size of the onfarm-pumped irrigation market for solar thermal parabolic dish systems in seven high-insolation states is estimated. The study is restricted to the displacement of three specific fuels: gasoline, diesel and natural gas. A model was developed to estimate the optimal number of parabolic dish modules per farm based on the minimum cost mix of conventional and solar thermal energy required to meet irrigation needs. Results indicate that the near-term market for such systems depends not only on the type of crop and method of irrigation, but also on the optimal utilization of each added module, which in turn depends on the price of conventional fuel, real discount rate, marginal cost of the solar thermal power system, local insolation level and parabolic dish system efficiency. The study concludes that the potential market size for onfarm-pumped irrigation applications ranges from 101,000 modules when a 14% real discount rate is assumed to 220,000 modules when the real discount rate drops to 8%. Arizona, Kansas, Nebraska, New Mexico and Texas account for 98% of the total demand for this application, with the natural gas replacement market accounting for the largest segment (71%) of the total market.

Habib-agahi, H.; Jones, S.C.

1981-09-01T23:59:59.000Z

29

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)

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 project involves: installing 4.66 miles of pipeline in the Main Canal and Lateral 7N, installing 13.46 miles of pipeline in several laterals and sub-laterals, and rehabilitating the District’s Rio Grande diversion pumping plant. Both nominal and real estimates of water and energy savings and expected economic and financial costs of those savings are identified throughout the anticipated useful lives for all three components. Sensitivity results for both the cost of saving water and the cost of saving energy are presented for several important parameters. Annual water and energy savings forthcoming from the total project are estimated, using amortization procedures, to be 1,522 ac-ft of water per year and 3,520,302,471 BTUs (1,031,742 kwh) of energy per year. The calculated economic and financial cost of saving water is estimated to be $341.51 per ac-ft. The calculated economic and financial cost of saving energy is estimated at $0.0001574 per BTU ($0.537 per kwh). In addition, real (vs. nominal) values are estimated for the USBRs three principal evaluation measures specified in the U.S. Public Law 106-576. The aggregate initial construction cost per ac-ft of water savings measure is $359.42 per ac-ft of water savings. The aggregate initial construction cost per BTU (kwh) of energy savings measure is $0.0003468 per BTU ($1.183 per kwh). The aggregate ratio of initial construction costs per dollar of total annual economic savings is estimated to be -3.551.

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

2006-03-01T23:59:59.000Z

30

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)

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 project involves: installing 4.66 miles of pipeline in the Main Canal and Lateral 7N, installing 13.46 miles of pipeline in several laterals and sub-laterals, and rehabilitating the District’s Rio Grande diversion pumping plant. Both nominal and real estimates of water and energy savings and expected economic and financial costs of those savings are identified throughout the anticipated useful lives for all three components. Sensitivity results for both the cost of saving water and the cost of saving energy are presented for several important parameters. Annual water and energy savings forthcoming from the total project are estimated, using amortization procedures, to be 1,409 ac-ft of water per year and 4,506,882,727 BTUs (1,320,892 kwh) of energy per year. The calculated economic and financial cost of saving water is estimated to be $325.20 per ac-ft. The calculated economic and financial cost of saving energy is estimated at $0.0001113 per BTU ($0.380 per kwh). In addition, real (vs. nominal) values are estimated for the USBRs three principal evaluation measures specified in the U.S. Public Law 106-576. The aggregate initial construction cost per ac-ft of water savings measure is $354.30 per ac-ft of water savings. The aggregate initial construction cost per BTU (kwh) of energy savings measure is $0.0003376 per BTU ($1.152 per kwh). The aggregate ratio of initial construction costs per dollar of total annual economic savings is estimated to be -3.442.

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

2005-09-01T23:59:59.000Z

31

Fuel cell powered irrigation system  

SciTech Connect

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.

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

1982-01-12T23:59:59.000Z

32

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

DOE Green Energy (OSTI)

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

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

1994-12-31T23:59:59.000Z

33

Irrigation Monitoring with Soil Water Sensors  

E-Print Network (OSTI)

Monitoring soil water content is essential if growers want to optimize production, conserve water, reduce environmental impacts and save money. This publication illustrates how soil moisture monitoring can improve irrigation decisions and how it also can prevent irrigating the crop too much or too little.

Enciso, Juan; Porter, Dana; Peries, Xavier

2007-01-19T23:59:59.000Z

34

Pesticide impact on non-target wildlife in irrigated crops: simulated impact of cholinesterase-inhibiting pesticides on white-winged doves in the Lower Rio Grande Valley of Texas  

E-Print Network (OSTI)

I present a simulation model that should be a useful tool for risk assessment of the impact of insecticide inhibitors of cholinesterase (ChE) applied in irrigated agricultural fields on non-target wildlife. I developed the model as a compartment model based on difference equations (��t = 1 hour) and programmed with Stella�® VII software. Conceptually the model is compartmentalized into six submodels describing the dynamics of (1) insecticide application, (2) insecticide movement into floodable soil, (3) irrigation and rain, (4) insecticide dissolution in water, (5) foraging and insecticide intake from water, and (6) ChE inhibition and recovery. To demonstrate application of the model, I simulate historical, current, and â��worst-caseâ� scenarios, that examined the impact of ChE-inhibiting insecticides on white-winged doves (WWDO - Zenaida asiatica) in the Lower Rio Grande Valley of Texas (LRGV), USA. To my knowledge, there are no field data verifying that the cause of ChE deprivation in WWDO is due to the ingestion of ChE-inhibiting insecticide residues dissolved in drinking water. I parameterized the model to represent a system composed of fields of cotton, sorghum, corn, citrus, and brushland that encompasses the activity range of a WWDO in the LRGV. I simulated situations representing the typical scenario of WWDO using irrigated crop fields in the absence and in the presence of rain. I also simulated â��worst caseâ� scenarios in which methyl parathion was applied at high rates and high frequency. Based on results of the simulations, I conclude that it is unlikely that WWDO are seriously exposed to ChE-inhibiting insecticides by drinking contaminated water. Only in rare cases, for example, when a rain event occurs just after the application of insecticides, are levels of ChE inhibition likely to approach diagnostic levels (20 %). The present simulation model should be a useful tool to predict the effect of ChE-inhibiting insecticides on the ChE activity of different species that drink contaminated water from irrigated agricultural fields. It should be particularly useful in identifying specific situations in which the juxtaposition of environmental conditions and management schemes could result in a high risk to non-target wildlife.

Pisani, Jorge Marcelo

2003-05-01T23:59:59.000Z

35

Development of Clemson variable-rate lateral irrigation system  

Science Conference Proceedings (OSTI)

Crops in the Southern United States are generally produced in fields which are known to have a high degree of variability in soil type, water holding capacity, infiltration rates, and other major factors which affect crop production. In these fields, ... Keywords: Instrumentation, Irrigation, Lateral-move, Precision agriculture, Variable-rate irrigation

Young J. Han; Ahmad Khalilian; Tom O. Owino; Hamid J. Farahani; Sam Moore

2009-08-01T23:59:59.000Z

36

Dynamics of lettuce drop incidence and Sclerotinia minor inoculum under varied crop rotations  

E-Print Network (OSTI)

Koike, S. T. 1998. Effects of crop rotation and irrigationImplications for yield and crop rotation. Asp. Appl. Biol.minor Inoculum Under Varied Crop Rotations J. J. Hao and K.

Hao, J J; Subbarao, K V

2006-01-01T23:59:59.000Z

37

Crop growth as influenced by Zinc and organic matter in Cadmium-rich polluted soils  

E-Print Network (OSTI)

in the soil as well as the crop plants, which affect theamount of Pb, Ni and Cd in crops in sewage irrigated areastubers and lowest in cereal crops (Setia et al. 1998). A

Talatam, Satyanarayana; talatam, satyanarayana; Parida, Binaya Kumar

2009-01-01T23:59:59.000Z

38

Increased Water Use Efficeincy Through Trickle Irrigation  

E-Print Network (OSTI)

The gap between supply and demand of water for agricultural and municipal uses is rapidly closing at a time when world food requirements are increasing at an alarming rate. To meet the demand for agricultural products, new lands must be brought into production or higher yields must be realized from existing lands. In either case, more efficient use of water is prerequisite. Trickle irrigation is an approach to obtain increased water use efficiencies (ratio of weight of grain harvested to weight of total crop water use) and therefore a way to increase food production with our limited water resources. The ultimate goal of this investigation was the development of required crop inputs for selected crops to optimize the design of trickle irrigation systems and obtain an optimum water balance for living plants. Specific objectives were as follows: 1. To quantitatively determine optimum irrigation timing and necessary water application amounts for selected crops when using trickle irrigation; and 2. To develop a general method for the hydraulic design of trickle irrigation systems using inputs from the first objective for optimizing the system. To achieve these objectives, experiments were conducted in field lysimeters and in a well-instrumented field plot installation for evaluating the crop inputs. Complete control of the soil water balance can be achieved by the use of these facilities. By knowing the required crop inputs and utilizing known principles of fluid mechanics proper design procedures were developed to provide optimum design for trickle irrigation systems. To achieve the first objective, three research experiments were conducted at the research lysimeters of the Department of Agricultural Engineering at Texas A&M University for which grain sorghum was selected as the experimental crop. The first two experiments were designed to study the response of grain sorghum to trickle and subsurface irrigation. A comparison of water use efficiencies under well-watered conditions using both intensified and conventional water application methods and the evaluation of water use efficiencies with trickle irrigation applications designed to limit the availability of water were the specific objectives. The results indicated higher water use efficiencies and better crop response when the trickle method of application was used. Also, the results showed that higher water use efficiencies can be obtained by applying sparing amounts. An additional investigation carried out under a different research project of the Texas Water Resources Institute (TWRI Project No. A024TEX) was designed to develop a computer model to simulate grain sorghum yield and water use under high frequency irrigation. The simulation methods used in this study can be used to simulate a complete irrigation experiment greatly reducing research costs and allowing the determination of water requirements for many crops under many different soil and climatic conditions. The objective of the third research experiment conducted in 1974 was to determine if different irrigation frequencies would influence the growth and water use efficiency of grain sorghum when irrigated at optimum levels. Results indicated that frequency of application had no significant effect on the water use efficiency of grain sorghum for irrigation intervals up to 7 days. To attain the second goal of this investigation two trickle irrigation lateral design methods were developed. With the first method the pressure loss and emitter flow ratio for trickle irrigation laterals can be determined. The design method is based upon known principles of fluid mechanics. A computer program was written to determine the lateral pressure loss and emitter flow ratio at a given design length as function of pipe size, tree spacing, number of emitters per tree, emitter spacing, downstream lateral pressure and lateral slope. For a given set of design inputs, the program can be used to determine if the given pipe size will be adequate to li

Hiler, E. A.

1975-06-01T23:59:59.000Z

39

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

E-Print Network (OSTI)

Irrigation is a major contributing factor in crop production on the Texas High Plains. It is responsible for greatly increasing crop production and farm income for the region. Two factors, a declining groundwater supply and increasing production costs, are of primary concern because they impact on farm operations and producer economic viability. A recursive linear programming model for a typical Texas High Plains irrigated farm was developed to evaluate expected impact of price changes, tenure and new technology. The model includes a Fortran sub-routine that adjusts irrigation factors each year based on the linear programming solution of the previous year. After calculating new pumping energy requirements, well yield, and pumping lift, the Fortran component updates the linear programming model. This procedure continues automatically to the end of a specified planning period or to economic exhaustion of the groundwater, whichever occurs first. Static applications of the model, in a deep water situation, showed that a natural gas price increase from $1.50 to $2.20 per thousand cubic feet (mcf) would result in reductions in irrigation levels. Irrigation was terminated when the price of natural gas reached about $7.00 per mcf. In a shallow water situation, much higher natural gas prices were reached ($3.60 per mcf) before short-run adjustments in farm organization began to occur. Under furrow irrigation, irrigation was terminated when the natural gas price reached $7.00 per mcf. Increased natural gas prices impact heavily on returns above variable costs (up to 15 percent reductions) for a 60 percent natural gas price increase. The effects of rising natural gas prices over a longer period of time were more significant. Annual returns (above variable and fixed costs) were reduced by as much as 30 percent, and the present value of returns to water was reduced by as much as 80 percent as the natural gas price was increased annually by $0.25 per mcf (from $1.50 per mcf). The economic life of deep groundwater was shortened by as much as 18 years. Renter-operators are even more vulnerable to rising natural gas prices than are owner-operators. With rising natural gas prices, profitability over time for the renter is low. As natural gas prices continue to increase, the greater will be the incentives for renter-operators to seek more favorable rental terms such as a sharing of irrigation costs. With the problem of a declining groundwater supply and rising natural gas prices, an economic incentive exists for producers to find new technologies that will enable them to make more efficient use of remaining groundwater and of natural gas. Substantial economic gains appear feasible through improved pump efficiency. Increasing pump efficiency from 50 to 75 percent will not increase the economic life of the water supply, but can improve farm profits over time; e.g., the present value of groundwater was increased 33 percent for a typical farm with an aquifer containing 250 feet of saturated thickness and 15 percent for 75 feet of saturated thickness. Improved irrigation distribution systems can help conserve water and reduce irrigation costs. Results indicate that irrigation can be extended by 11 or more years with 50 percent improved distribution efficiency. In addition, the increase in present value of groundwater on the 1.69 million irrigated acres of the Texas High Plains was estimated to be $995 million with 50 percent improved efficiency. Limitations in borrowing can substantially reduce annual net returns. This analysis suggests that the farmer can economically justify very high costs of borrowing rather than a limitation of funds available for operating expenses.

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

1980-05-01T23:59:59.000Z

40

Economic Analysis of Alternative Irrigation Technologies: Texas Lower Rio Grande Valley  

E-Print Network (OSTI)

The focus of this study is the economic feasibility of drip irrigation adoption using capital budgeting and quadratic programming techniques. The capital budgeting techniques used in the study are net present value (NPV) and returns above specified costs (RASC). Modified crop enterprise budgets incorporating drip irrigation are developed based on data from Texas AgriLife Extension Service crop enterprise budgets and published literature focusing on costs and returns of drip irrigation. The quadratic programming technique considers risk and incorporates the modified crop enterprise budgets to estimate a cropping pattern that maximizes the net income above specified costs for the region. The RASC per acre for drip-irrigated crops ranged from $56.34 to $1,909.03, while the RASC per acre for flood-irrigated crops ranged from $142.51 to $1,488.12. Flood-irrigated onions, cotton, and sugarcane had higher RASCs per acre, while the RASCs were greater for drip-irrigated grapefruit and oranges. Evaluating the NPV of the crops resulted in similar results; only grapefruit and oranges were economically-feasible drip-irrigated crops. The baseline results identified levels of drip irrigation adoption ranging from 52,000 acres to 64,497 acres as levels of risk were varied. The level of water available at the reservoir suggested minimal impacts on the level of drip-irrigation adoption, but serious implications for the agriculture economy. Several sensitivity scenarios concentrated on the implications of yield response and water savings that result from the adoption of drip irrigation. The greatest amounts of drip-irrigated crops were present when the yield responses were 130% of the flood-irrigated crops with a 20% water savings. As the amount of water available was reduced, the amount of drip-irrigated crops ranged from 46,111 acres to 59,724 acres. Drip irrigation appears to be an economically-viable alternative in the LRGV due to the presence of drip-irrigated crops in the entire myriad of scenarios investigated in this research. If producers are only concerned with the bottom line as provided by the RASC analysis and no other variables such as water availability, risk, and crop rotations affecting the decision making process, only drip-irrigated grapefruit and oranges are economically competitive with conventional irrigation systems.

Wilbourn, Brant 1987-

2012-12-01T23:59:59.000Z

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


41

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

E-Print Network (OSTI)

IDMM (Irrigation District Management Model), a user friendly, GIS based, menu driven personal computer software program, was developed as a planning and management tool for improved water use and crop growth production in irrigation districts. It consists of IRDDESS (Irrigation District Decision Support System), a crop growth and district simulation model that was integrated into ArcView GIS software. To demonstrate the usefulness of the model, its predictions were compared with those observed in real systems with similar situations. The three simulation modules of IDMM were tested for two locations in the Brownsville Irrigation District (BID) in Texas. The POTPROD (potential production) simulation module, was used to simulate daily crop dry matter production and irrigation regimes during one season for four crops: maize, soybean, sorghum, and cotton. Generally, the larger irrigation volumes and more frequent irrigations resulted in the highest yields. The SIMDIRT (simulation under different irrigation treatments) module estimates potential yield under any combination of irrigation regimes. It was tested for sorghum for one crop season with eleven different irrigation regimes. Results show that actual yields were within 4 % of predicted in three of the irrigation regimes. The SIMWETH (simulation under different weather conditions) module allows the user to estimate yields for as many seasons as desired. Historical or stochastically produced weather data can be used to analyze how potential yields vary under a given irrigation regime over a long period of time. Proper water management in each farmer's field is important in improving the overall performance of an irrigation district; consequently IDMM's capabilities were demonstrated at the farm and the irrigation district levels. One of the most important components of IDMM is its ability to visually display and analyze all information concerning crops, fields, irrigation, gates, etc., providing irrigation districts with information crucial in the process of decision-making.

Nazarov, Azimjon S.

2000-01-01T23:59:59.000Z

42

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)

Initial construction costs and net annual changes in operating and maintenance expenses are identified for the capital renovation project proposed by the Cameron County Irrigation District No. 2 (a.k.a. San Benito) to the North American Development Bank (NADBank) and Bureau of Reclamation. Both nominal and real, expected economic and financial costs of water and energy savings are identified throughout the anticipated useful lives for both components of the proposed project (i.e., a lined interconnect between Canals 39 and 13-A1 and replacement of the Rio Grande diversion pumping plant). Sensitivity results for both the cost of water savings and cost of energy savings are presented for several important parameters. Expected cost of water savings and cost of energy savings for both components are aggregated into a composite set of cost measures for the total proposed project. Aggregate cost of water savings is estimated to be $41.26 per ac-ft and energy savings are measured at an aggregate value of $0.0001586 per BTU (i.e., $0.541 per kwh). In addition, expected values are indicated for the Bureau of Reclamation’s three principal evaluation measures specified in the United States Public Law 106-576 legislation. The aggregate initial construction cost per ac-ft of water savings measure is $157.07 per ac-ft of water savings. The aggregate initial construction cost per BTU (kwh) of energy savings measure is $0.0001777 per BTU ($0.606 per kwh). The ratio of initial construction costs per dollar of total annual economic savings is estimated to be -3.80.

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

2003-01-01T23:59:59.000Z

43

Using Renewable Energy to Pump Water  

E-Print Network (OSTI)

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

Mecke, Michael; Enciso, Juan

2007-06-08T23:59:59.000Z

44

Irrigation customer survey procedures and results  

SciTech Connect

This report describes the statistical procedures, administrative procedures, and results of a telephone survey designed to collect primary data from individuals in the Pacific Northwest region who use electricity in irrigating agricultural crops. The project was intended to collect data useful for a variety of purposes, including conservation planning, load forecasting, and rate design.

Harrer, B.J.; Johnston, J.W.; Dase, J.E.; Hattrup, M.P.; Reed, G.

1987-03-01T23:59:59.000Z

45

Data Mining Applied to Irrigation Water Management  

Science Conference Proceedings (OSTI)

This work addresses the application of data mining to obtain artificial neural network based models for the application in water management during crops irrigation. This problem is very important in the zone of the South-East of Spain, as there is an ...

Juan A. Botía; Antonio F. Gómez-Skarmeta; Mercedes Valdés; Antonio Padilla

2001-06-01T23:59:59.000Z

46

Modesto Irrigation District - Residential Energy Efficiency Rebate Program  

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

Modesto Irrigation District - Residential Energy Efficiency Rebate Modesto Irrigation District - Residential Energy Efficiency Rebate Program Modesto Irrigation District - Residential Energy Efficiency Rebate Program < Back Eligibility Residential Savings Category Home Weatherization Commercial Weatherization Heating & Cooling Commercial Heating & Cooling Cooling Appliances & Electronics Sealing Your Home Ventilation Heat Pumps Water Heating Program Info Expiration Date 12/15/2013 State California Program Type Utility Rebate Program Rebate Amount Room AC: $50 Clothes Washer: $35 Water Heater: $25 Heat Pump Water Heater: $100 Refrigerator/Freezer Recycling: $35 per unit Central AC: $250 Heat Pump: $350 High Efficiency AC/Heat Pump: $500 Mini-Split AC/Heat Pump: $500 Air Duct Sealing: up to $250 max Whole House Fan: $100 per unit

47

Systematic hydraulic study on pumping stations equipped with surge tank mounted next to the pump  

Science Conference Proceedings (OSTI)

An important number of pumping stations, part of the Romanian irrigation systems, were conceived with surge tank mounted on the discharge duct, next to the pump, in order to protect the installation from hydraulic shock. In practice, the dimensioning ... Keywords: air chamber, geodetic head, head loss, pumping station, surge tank

Claudiu Stefan Nitescu; Anca Constantin

2010-07-01T23:59:59.000Z

48

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

E-Print Network (OSTI)

Irrigation is a major contributing factor in crop production on the Texas High Plains. It is responsible for greatly increasing crop production and farm income for the region. Two factors, a declining groundwater supply and increasing production costs, are of primary concern because they impact on farm operations and producer economic viability. Recursive linear programming models for a typical Texas High Plains irrigated farm were developed to evaluate expected impact of energy and crop price changes, tenure and new technology. The model includes a Fortran sub-routine that adjusts irrigation factors each year based on the linear programming solution of the previous year. After calculating new pumping energy requirements, well yield, and pumping lift, the Fortran component updates the linear programming model. This procedure continues automatically to the end of a specified planning period or to economic exhaustion of the groundwater, whichever occurs first. Static applications of the model, in a deep water situation, showed that a natural gas price increase from $1.50 to $2.20 per thousand cubic feet (mcf) would result in reductions in irrigation levels. Irrigation was terminated when the price of natural gas reached about $7.00 per mcf. In a shallow water situation, much higher natural gas prices were reached ($3.60 per mcf) before short-run adjustments in farm organization began to occur. Under furrow irrigation, irrigation was terminated when the natural gas price reached $7.00 per mcf. Increased natural gas prices impact heavily on returns above variable costs (up to 15 percent reductions) for a 60 percent natural gas price increase. The effects of rising natural gas prices over a longer period of time were more significant. Annual returns (above variable and fixed costs) were reduced by as much as 30 percent, and the present value of returns to water was reduced by as much as 80 percent as the natural gas price was increased annually by $0.25 per mcf (from $1.50 per mcf). The economic life of deep groundwater was shortened by as much as 18 years. Renter-operators are even more vulnerable to rising natural gas prices than are owner-operators. With rising natural gas prices, profitability over time for the renter is low. As natural gas prices continue to increase, the greater will be the incentives for renter-operators to seek more favorable rental terms such as a sharing of irrigation costs. With the problem of a declining groundwater supply and rising natural gas prices, an economic incentive exists for producers to find new technologies that will enable them to make more efficient use of remaining groundwater and of natural gas. Substantial economic gains appear feasible through improved pump efficiency. Increasing pump efficiency from 50 to 75 percent will not increase the economic life of the water supply, but can improve farm profits over time; e.g., the present value of groundwater was increased 33 percent for a typical farm with an aquifer containing 250 feet of saturated thickness and 15 percent for 75 feet of saturated thickness. Improved irrigation distribution systems can help conserve water and reduce irrigation costs. Results indicate that irrigation can be extended by 11 or more years with 50 percent improved distribution efficiency. In addition, the increase in present value of groundwater on the 1.69 million irrigated acres of the Texas High Plains was estimated to be $995 million with 50 percent improved efficiency. New technology opportunities were expanded to include analysis of the economic feasibility of wind assisted irrigation pumping. Two wind machines were analyzed, with rate outputs of 40 to 60 kilowatts (KW). Each was applied to the Northern and Southern Texas High Plains over a range of land and water resource situations. Breakeven investment was estimated at discount rates of three, five and ten percent. Cropping patterns on the Southern High Plains were dominated by irrigated cotton and were insensit

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

1982-05-01T23:59:59.000Z

49

Vera Irrigation District #15 - Energy Efficiency Rebate Program |  

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

Vera Irrigation District #15 - Energy Efficiency Rebate Program Vera Irrigation District #15 - Energy Efficiency Rebate Program Vera Irrigation District #15 - Energy Efficiency Rebate Program < Back Eligibility Residential Savings Category Appliances & Electronics Home Weatherization Sealing Your Home Design & Remodeling Windows, Doors, & Skylights Commercial Weatherization Ventilation Heating & Cooling Commercial Heating & Cooling Heat Pumps Water Heating Maximum Rebate $1,500 Program Info State District of Columbia Program Type Utility Rebate Program Rebate Amount Refrigerator/Freezer Recycling: $30 Water Heaters: $100 Windows: $6/sq. ft. Heat Pumps: $450 Duct Sealing: $400 - $500 Clothes Washer: $30 Ductless Heat Pumps: $1,500 Vera Irrigation District #15 offers rebates to electric customers who improve energy efficiency. Rebates are available for water heaters,

50

Calculating Horsepower Requirements and Sizing Supply Pipelines for Irrigation  

E-Print Network (OSTI)

Pumping costs are often one of the largest single expenses in irrigated agriculture. This publication explains how to lower pumping costs by calculating horsepower requirements and sizing supply pipelines correctly. Examples take the reader through a step-by-step process. A special section deals with selecting PVC pipe.

Fipps, Guy

1995-09-05T23:59:59.000Z

51

Pricing and Conservation of Irrigation Water in Texas and New Mexico  

E-Print Network (OSTI)

Two possible policy alternatives for management of limited water supplies in arid portions of Texas and New Mexico were analyzed for economic feasibility. Detailed studies of the potential impact of a water accumulation policy for each of two irrigation districts (El Paso County Water Improvement District No. 1 in Texas, and the Elephant Butte Irrigation District in New Mexico) were undertaken using temporal linear programming techniques. Current cropping practices, soils, groundwater conditions, historical surface water allocations for Elephant Butte Reservoir and evaporation rates were incorporated within the analysis. Estimates of the benefits of accumulation of surplus portions of irrigation district member's annual surface water allocations, with subsequent use of the unevaporated portion in later years, were deemed insufficient to cover anticipated administrative costs of implementing the proposed policy. This suggests current allocations approximate a temporal optimum. Sensitivity analyses showed greater potential benefits, however, if current groundwater conditions worsen. Additional analysis of possible price-induced water conservation for the areas within the two states currently mining groundwater from the exhaustible Ogallala aquifer was also undertaken. The High Plains of Texas served as the representative region of study, with results assumed to be analogous for the portions of Eastern New Mexico relying on the Ogallala. Both static and temporal effects of a per unit tax on water pumpage and net returns were examined using a recursive linear programming model. Results indicated that imposition of a $20 per acre-foot tax on water pumped induced very little change in water use over a 40 year period, while reducing the present value of producer net returns from 9% to 27% depending upon initial groundwater conditions and the irrigation technology in use. These results imply that a price induced water conservation policy for the Ogallala is not economically justified.

Ellis, John R.; Lacewell, Ronald D.; Cornforth, G. C.; Teague, P. W.

1983-10-01T23:59:59.000Z

52

Modeling the effects of groundwater-fed irrigation on terrestrial hydrology over the conterminous United States  

Science Conference Proceedings (OSTI)

Human alteration of the land surface hydrologic cycle is substantial. Recent studies suggest that local water management practices including groundwater pumping and irrigation could significantly alter the quantity and distribution of water in the ...

Guoyong Leng; Maoyi Huang; Qiuhong Tang; Huilin Gao; L. Ruby Leung

53

IRRIGATION & ELECTRICAL DISTRICTS  

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

IRRIGATION & ELECTRICAL DISTRICTS IRRIGATION & ELECTRICAL DISTRICTS ASSOCIATION OF ARIZONA R.D. JUSTICE SUITE 140 WILLIAM H. STACY PRESIDENT 340 E. PALM LANE SECRETARY-TREASURER PHOENIX, ARIZONA 85004-4603 ELSTON GRUBAUGH (602) 254-5908 ROBERT S. LYNCH VICE-PRESIDENT Fax (602) 257-9542 COUNSEL AND

54

IRRIGATION & ELECTRICAL DISTRICTS  

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

IRRIGATION & ELECTRICAL DISTRICTS IRRIGATION & ELECTRICAL DISTRICTS ASSOCIATION OF ARIZONA R. GALE PEARCE SUITE 140 ELSTON GRUBAUGH PRESIDENT 340 E. PALM LANE SECRETARY-TREASURER PHOENIX, ARIZONA 85004-4603 R.D. JUSTICE (602) 254-5908 ROBERT S. LYNCH VICE-PRESIDENT Fax (602) 257-9542 ASSISTANT SECRETARY-TREASURER

55

PUMP CONSTRUCTION  

DOE Patents (OSTI)

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

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

1960-09-27T23:59:59.000Z

56

Outlook for Energy and Implications for Irrigated Agriculture  

E-Print Network (OSTI)

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

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

1977-09-01T23:59:59.000Z

57

ELECTROMAGNETIC PUMP  

DOE Patents (OSTI)

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

Pulley, O.O.

1954-08-17T23:59:59.000Z

58

Remote Sensing of Irrigated Agriculture: Opportunities and Challenges  

E-Print Network (OSTI)

Abstract: Over the last several decades, remote sensing has emerged as an effective tool to monitor irrigated lands over a variety of climatic conditions and locations. The objective of this review, which summarizes the methods and the results of existing remote sensing studies, is to synthesize principle findings and assess the state of the art. We take a taxonomic approach to group studies based on location, scale, inputs, and methods, in an effort to categorize different approaches within a logical framework. We seek to evaluate the ability of remote sensing to provide synoptic and timely coverage of irrigated lands in several spectral regions. We also investigate the value of archived data that enable comparison of images through time. This overview of the studies to date indicates that remote sensing-based monitoring of irrigation is at an intermediate stage of development at local scales. For instance, there is overwhelming consensus on the efficacy of vegetation indices in identifying irrigated fields. Also, single date imagery, acquired at peak growing season, may suffice to identify irrigated lands, although to multi-date image data are necessary for improved classification and to distinguish different crop types. At local scales, the mapping of irrigated lands with remote sensing is also strongly affected by the

Mutlu Ozdogan; Yang Yang; George Allez; Chelsea Cervantes

2010-01-01T23:59:59.000Z

59

Crop water stress under climate change uncertainty : global policy and regional risk  

E-Print Network (OSTI)

Fourty percent of all crops grown in the world today are grown using irrigation, and shifting precipitation patterns due to climate change are viewed as a major threat to food security. This thesis examines, in the framework ...

Gueneau, Arthur

2012-01-01T23:59:59.000Z

60

Effects of Monsoonal Fluctuations on Grains in China. Part II: Crop Water Requirements  

Science Conference Proceedings (OSTI)

This paper continues the description of the effects of monsoonal variability in regard to crop evapotranspiration (ET) and irrigation needs of rice, maize, and wheat for 16 Chinese stations between 1961 and 1975. For this analysis the previously ...

W. H. Terjung; L. O. Mearns; P. E. Todhunter; J. T. Hayes; H-Y. Ji

1989-01-01T23:59:59.000Z

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


61

Modesto Irrigation District - Commercial Energy Efficiency Rebate Program |  

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

Modesto Irrigation District - Commercial Energy Efficiency Rebate Modesto Irrigation District - Commercial Energy Efficiency Rebate Program Modesto Irrigation District - Commercial Energy Efficiency Rebate Program < Back Eligibility Agricultural Commercial Industrial Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Other Construction Commercial Weatherization Manufacturing Heat Pumps Appliances & Electronics Commercial Lighting Lighting Maximum Rebate Rebate Caps vary according to MID electric rate schedule, they range from $10,000 - $50,000. Cap exemption can be requested. Program Info Expiration Date 12/15/2012 State California Program Type Utility Rebate Program Rebate Amount Lighting and Sensors: Varies, consult program website Auto Door Closers: $56 - $65/closer Strip Curtains: $3/sq ft Plastic Swinging Doors: $4/sq ft

62

PETRO: Higher Productivity Crops for Biofuels  

Science Conference Proceedings (OSTI)

PETRO Project: The 10 projects that comprise ARPA-E’s PETRO Project, short for “Plants Engineered to Replace Oil,” aim to develop non-food crops that directly produce transportation fuel. These crops can help supply the transportation sector with agriculturally derived fuels that are cost-competitive with petroleum and do not affect U.S. food supply. PETRO aims to redirect the processes for energy and carbon dioxide (CO2) capture in plants toward fuel production. This would create dedicated energy crops that serve as a domestic alternative to petroleum-based fuels and deliver more energy per acre with less processing prior to the pump.

None

2012-01-01T23:59:59.000Z

63

Crop Growth and Development for Irrigated Chile (Capsicum annuum)  

E-Print Network (OSTI)

/Department Head and Extension Specialist, Department of Soil, Water and Environmental Science, University a Color Sorter to Remove Sticks from Mechanically Harvested Red Chile Report 21: Regional Branding Gap Sorter for Mechanically Harvested Red Chile Report 26: Good Agricultural Practices: What Growers

Castillo, Steven P.

64

Remote Sensing of Thermal Radiation from an Aircraft—An Analysis and Evaluation of Crop-Freeze Protection Methods  

Science Conference Proceedings (OSTI)

Thermal images from an aircraft-mounted scanner are used to evaluate the effectiveness of crop-freeze protection devices. Data from flights made while using fuel oil heaters, a wind machine and an undercanopy irrigation system are compared. ...

R. A. Sutherland; H. E. Hannah; A. F. Cook; J. D. Martsolf

1981-07-01T23:59:59.000Z

65

A crop model and fuzzy rule based approach for optimizing maize planting dates in Burkina Faso, West Africa  

Science Conference Proceedings (OSTI)

In Sub-Saharan Africa with high rainfall variability and little irrigation options, the crop planting date is a crucial tactical decision for farmers and therefore a major concern in agricultural decision making. To support decision making in ...

Moussa Waongo; Patrick Laux; Seydou B. Traoré; Moussa Sanon; Harald Kunstmann

66

Increasing water holding capacity for irrigation  

NLE Websites -- All DOE Office Websites (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...

67

Integrated assessment of conservation opportunities in the irrigated agriculture sector of the Pacific Northwest Region  

SciTech Connect

This report documents research to identify the potential energy savings and cost per kWh saved for implementing currently available energy conservation measures in the irrigated agriculture sector of the Pacific Northwest. A computer model that simulates the energy consumption process of irrigation systems and estimates the levelized costs of undertaking conservation investments is the primary analytical tool used in this research. Using engineering and economic input parameters for the various conservation measures that could potentially be implemented in irrigated agriculture, the Irrigation Sector Energy Planning (ISEP) model generates estimates of energy savings and cost per kWh saved for the measures. All parameters input to the ISEP model are based upon empirical field data. Results provided by the ISEP model indicate tht by the year 2003 a total of approximately 158.6 average MW of energy could potentially be saved in the Pacific Northwest irrigation sector on all sprinkler-irrigated acres. Approximately 130.4 average MW can be saved on acres currently by sprinkler, while an additional 28.2 average MW could be saved on new acres that are forecast to come under irrigation in the next 20 years. The largest share of the total savings (47%) is estimated to come from the use of low-pressure irrigation. Over 60% of the total potential savings 158.6 average MW is estimated to be available for a cost per kWh saved of 20 mills or less and over 75% could be achieved for a cost of 30 mills or less. Savings from low-pressure irrigation and the redesign of fittings and mainlines will normally cost less than 20 mills per kWh saved. Almost all of the savings that are estimated to cost more than 30 mills per kWh saved to obtain are savings from improved irrigation scheduling on irrigated acres that use surface water and have low average pumping lifts.

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

1985-02-01T23:59:59.000Z

68

Survey of hybrid solar heat pump drying systems  

Science Conference Proceedings (OSTI)

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

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

2009-02-01T23:59:59.000Z

69

Value of Probabilistic Weather Forecasts: Assessment by Real-Time Optimization of Irrigation Scheduling  

SciTech Connect

This paper presents a modeling framework for real-time decision support for irrigation scheduling using the National Oceanic and Atmospheric Administration's (NOAA's) probabilistic rainfall forecasts. The forecasts and their probability distributions are incorporated into a simulation-optimization modeling framework. In this study, modeling irrigation is determined by a stochastic optimization program based on the simulated soil moisture and crop water-stress status and the forecasted rainfall for the next 1-7 days. The modeling framework is applied to irrigated corn in Mason County, Illinois. It is found that there is ample potential to improve current farmers practices by simply using the proposed simulation-optimization framework, which uses the present soil moisture and crop evapotranspiration information even without any forecasts. It is found that the values of the forecasts vary across dry, normal, and wet years. More significant economic gains are found in normal and wet years than in dry years under the various forecast horizons. To mitigate drought effect on crop yield through irrigation, medium- or long-term climate predictions likely play a more important role than short-term forecasts. NOAA's imperfect 1-week forecast is still valuable in terms of both profit gain and water saving. Compared with the no-rain forecast case, the short-term imperfect forecasts could lead to additional 2.4-8.5% gain in profit and 11.0-26.9% water saving. However, the performance of the imperfect forecast is only slightly better than the ensemble weather forecast based on historical data and slightly inferior to the perfect forecast. It seems that the 1-week forecast horizon is too limited to evaluate the role of the various forecast scenarios for irrigation scheduling, which is actually a seasonal decision issue. For irrigation scheduling, both the forecast quality and the length of forecast time horizon matter. Thus, longer forecasts might be necessary to evaluate the role of forecasts for irrigation scheduling in a more effective way.

Cai, Ximing; Hejazi, Mohamad I.; Wang, Dingbao

2011-09-29T23:59:59.000Z

70

The feasibility and profitability of short season corn and sorghum cropping systems on the Texas High Plains  

E-Print Network (OSTI)

Studies of experimental cropping systems were conducted at the TAES-USDA Conservation and Production Research Field at Bushland, TX and at the North Plains Research Field near Etter, TX. The study at Bushland was fully irrigated using flood irrigation in level plots with raised borders. The study at Etter was conducted as limited irrigation using sprinkler irrigation equipped with a low energy precision application (LEPA) system. The four experimental cropping systems utilized a 98-day short season corn cultivar (SSC), a 100-day short season sorghum cultivar (SSS), and winter wheat grazed-grain (Wht Grz-Grn) and grain only. The cropping systems were evaluated in terms of attainable yields, irrigation water use, profitability, and feasibility. Conventional cropping systems of continuous full season corn (FSC), continuous full season sorghum (FSS), and continuous wheat grazed-grain and grain only were also included in the study. Compared to conventional cropping systems, the experimental cropping systems did not reduce irrigation, but profitability was increased. The rotation of SSC/Wht/SSS with wheat grazed or non-grazed, was consistently the most profitable rotation under full and limited irrigation. Profitability was obtained by increasing total revenue through improved yields of SSC in rotation with wheat and sorghum when compared to yields of SSC in continuous rotation, by obtaining higher market prices for early harvested SSC, and by realizing the opportunity to graze and obtain grain from wheat planted after SSC. Input costs were reduced by decreased fertilizer, insecticide, and irrigation applications and by reduced to no-tillage operations. Peak irrigation demands were spread more evenly throughout the year, and irrigation scheduling became less critical for optimum yields. Experimental rotations increased management and labor requirements. A greater diversity of machinery was also necessary. Timing of harvesting one crop and planting the next became critical in determining whether a rotation was profitable. The experimental rotation SSC/Wht Grz was not profitable and used the greatest amount of irrigation water. Conventional cropping systems of continuous FSS and continuous Wht Grz-Grn reduced irrigation compared to continuous FSC and all experimental rotations while maintaining profitability.

Vagts, Todd Anthony

1995-01-01T23:59:59.000Z

71

Crop Physiology  

Science Conference Proceedings (OSTI)

In this chapter, we review the physiology of switchgrass from seed dormancy till the effects of water and nutrients stress on grown plants. These characteristics are presented and discussed mainly at the canopy and whole-plant level with emphasis on the agro-physiology of the species in view of the possible contribution of crop physiology to agricultural development. Switchgrass is noted for the variable degrees of seed dormancy regulated by endogenous and exogenous factors that determine the successful seedling establishment. Plant growth rates are determined by temperature while the reproductive phase is controlled mainly by photoperiod. There is also evidence that some physiological attributes, such as photosynthesis, transpiration, and water use efficiency differ between tetraploid, hexaploid and octaploid ecotypes. But despite these differences, in general switchgrass combines important attributes of efficient use of nutrients and water with high yields thanks to its ability to acquire resources from extended soil volumes, especially at deep layers. Moreover at canopy level, resources capture and conservation are determined by morpho-physiological characteristics (C{sub 4} photosynthetic pathway, stomatal control of transpiration, high leaf area index, low light extinction coefficient) that enhance radiation use efficiency and reduce carbon losses. However, specific information on switchgrass physiology is still missing, in particular deeper understanding of physiological principles controlling the water and nutrients acquisition mechanisms and allocation under suboptimal growing conditions. The physiology of tillering and root respiration are also factors that need further investigation.

Zegada-Lizarazu, Walter [University of Bologna; Wullschleger, Stan D [ORNL; Nair, S. Surendran [University of Tennessee, Knoxville (UTK); Monti, Andrea [University of Bologna

2013-01-01T23:59:59.000Z

72

Modesto Irrigation District - Custom Commercial Energy Efficiency Rebate  

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

You are here You are here Home » Modesto Irrigation District - Custom Commercial Energy Efficiency Rebate Program Modesto Irrigation District - Custom Commercial Energy Efficiency Rebate Program < Back Eligibility Agricultural Commercial Industrial Savings Category Home Weatherization Commercial Weatherization Heating & Cooling Commercial Heating & Cooling Cooling Other Heat Pumps Appliances & Electronics Commercial Lighting Lighting Maximum Rebate Rebate caps are adjusted according to MID's electric rate schedule they vary from $15,000 - $500,000. Exemptions from rebate caps can be requested. Program Info State California Program Type Utility Rebate Program Rebate Amount Lighting Measures: $250/kW reduced or $.04/kWh reduced Insulation Measures: $250/kW reduced or $.04/kWh reduced

73

Pump8  

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

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

74

Energy Basics: Absorption Heat Pumps  

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

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

75

Energy Basics: Heat Pump Systems  

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

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

76

Energy Basics: Geothermal Heat Pumps  

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

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

77

Microbially derived crop protection products  

E-Print Network (OSTI)

of the Project: Microbially derived crop protection productstransferred into major crop plants. Following greenhouseMicrobial Diversity-Based Novel Crop Protection Products " A

Torok, Tamas

2010-01-01T23:59:59.000Z

78

Evaluation of herbacceous biomass crops in the northern Great Plains. Final report  

DOE Green Energy (OSTI)

Herbaceous lignocellulose crops are a potential renewable feedstock for biochemical conversion systems second in size to wood products. Several herbaceous crops are utilized as forage crops in the northern Great Plains, but forage quality considerations usually dictates a early harvest. Biomass cropping does not have this constraint; therefore, little information was available on herbaceous crops utilized as energy crops prior to this project. Our primary objectives were to evaluate the biomass yield and select chemical components of several herbaceous crops for energy crops in the northern Great Plains, compare the economic feasibility of energy crops with common competing crops, and evaluate biomass cropping on summer fallow lands. Three good, two marginal, and one irrigated sites were used during 1988 to 1992 for the first component. At least six perennial and four annual biomass species were included at all sites. Three to four nitrogen (N) levels and a crop-recrop comparison (annuals only) were management intensities included. Biomass cropping on idled lands was performed on dryland at Carrington and evaluated the effects of removing leguminous biomass on fallowed lands. This report summarizes results from the 5-year project.

Meyer, D.W.; Norby, W.E.; Erickson, D.O.; Johnson, R.G. [North Dakota State Univ., Fargo, ND (United States)

1994-08-01T23:59:59.000Z

79

Solar irrigation program plan. Revision  

DOE Green Energy (OSTI)

This report describes the ERDA solar irrigation program plan through fiscal year 1979. It is an update of the original program plan as outlined in Sandia Report SAND--76-0594. The updated goals of the plan are listed, the participants named, and their responsibilities outlined. ERDA has the program responsibility, ERDA field offices the contractural responsibility, and Sandia Laboratories the technical direction responsibilities. Three solar irrigation experiments planned, system analyses to be conducted, and the participants of the program are described. This document is intended to be used as a program guide for accomplishing the program goals.

Alvis, R.L.; Vandevender, S.G.

1977-06-01T23:59:59.000Z

80

LMFBR with booster pump in pumping loop  

DOE Patents (OSTI)

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

Rubinstein, H.J.

1975-10-14T23:59:59.000Z

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


81

CATEGORICAL EXCLUSION FOR 331 BUILDING IRRIGATION UPGRADES,  

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

EXCLUSION FOR 331 BUILDING IRRIGATION UPGRADES, EXCLUSION FOR 331 BUILDING IRRIGATION UPGRADES, 300 AREA, HANFORD SITE, RICHLAND, WASHINGTON Proposed Action: The U.S. Department of Energy (DOE), Pacific Northwest Site Office (PNSO) proposes to upgrade a landscaping irrigation system in the 300 Area. Location of Action: In the landscaped area around the 331 Building, Hanford Site Description of the Proposed Action: The proposed action is to upgrade the existing 331 Building landscaping irrigation system by using nearby aquaculture effluent instead of

82

Sorghums as energy crops  

Science Conference Proceedings (OSTI)

The botanical, physiological, and agronomic characteristics of sorghum are described. Integration concepts to improve sorghum prospects are discussed as follows: multiple sweet sorghum crops each year, integration with sugarcane, integration with sugar beets, integration with starch crops, sweet stemmed grain sorghum, and integration with lignocellulosic crops. (MHR)

Lipinsky, E.S.; Kresovich, S.

1980-01-01T23:59:59.000Z

83

Cover Crops for the Garden  

E-Print Network (OSTI)

photosynthesis. When the cover crops decompose, the nitrogenthe nodules becomes available for growing crops to draw on.to a fall planting of cover crops. Cover crops are grown not

2008-01-01T23:59:59.000Z

84

Systematic hydraulic study for the preliminary sizing of the surge tanks mounted close to the pumping station  

Science Conference Proceedings (OSTI)

The surge tanks, assumed to have no hydraulic loss at the bottom connection to the main discharge duct, are the simplest and safest protective device. An important number of pumping stations, part of the Romanian irrigation systems, were conceived with ... Keywords: air chamber, geodetic head, head loss, pumping station, surge tank

Claudiu Stefan Nitescu; Anca Constantin

2010-10-01T23:59:59.000Z

85

The Effect of Changing Input and Product Prices on the Demand for Irrigation Water in Texas  

E-Print Network (OSTI)

Agriculture is a major income-producing sector in the Texas economy and a large part of this economic activity originates in irrigated crop production. For example, in 1973, 50% of all grain sorghum and 46% of all cotton in Texas were produced on irrigated acreage [Texas Crop and Livestock Reporting Service]. These two crops alone produced 26% of the cash receipts from the sale of Texas farm commodities in 1973 [Texas Crop and Livestock Reporting Service]. There are several other crops in Texas including vegetables which generate significant levels of income and rely heavily on irrigation. Further there are several associated industries which rely on production from irrigated agriculture, such as the cattle feeding industry in the Texas Panhandle. It is evident from this rather cursory examination of statistics that irrigation plays a large role in Texas agriculture. Both producers and policy-makers have found themselves faced in the past two years with many uncertainties. The U.S., plagued in the past with surplus production and supply control problems, now finds itself in a world shortage of food products. The long range signals seem to call for increased production, yet the policy-maker faces decisions concerning not only how to increase production, but more basically, how to maintain current levels of production. Groundwater resources in many areas are being diminished and annual irrigation water supplies fully committed in other areas. Long run planning for Texas agriculture requires that interbasin transfers of water be evaluated. Texas holds a position of prominence in the production of U.S. food and fiber products, and the evaluation of these alternatives has implications not only for Texas, but for the U.S. and possibly the world. To objectively evaluate water transfer proposals, it is necessary that the value of irrigation water in different regions of Texas be established. The producer faces the same call for maintaining or increasing production as the policy-maker, but he does so with many uncertainties which often have not disturbed the policy-maker in evaluating alternatives. Product prices have risen and fallen at an unprecedented rate while input prices have steadily risen at rates which preclude realistic budgeting. For example, during the recent energy crisis, the prices of fuel and fertilizer have more than doubled. These variable input and product prices weigh heavily upon production decisions by the producer, and likewise must receive serious consideration in evaluation of resource allocation alternatives by policy-makers. The demand for irrigation water is derived from the production of crops and any change in production patterns, input prices or availability, and product prices directly affects this demand. Current and future water resources planning requires an estimate of the various quantities of water which will be used for irrigation under differing assumptions concerning price of water, other input prices, and product prices. Of particular importance are shifts in cropping patterns, changes in level of agricultural production and net effect on producers income. Since many policy decisions are made in relatively short periods of time, there is an urgent need for a capability to evaluate alternative policies and change input or product prices in a timely fashion.

Lacewell, R. D.; Condra, G. D.

1976-06-01T23:59:59.000Z

86

Match Pumps to System Requirements  

SciTech Connect

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

2005-10-01T23:59:59.000Z

87

Exposure of a food crop to trichloroethylene from a contaminated aquifer. Master's thesis  

Science Conference Proceedings (OSTI)

This research developed a methodology for assessment of the exposure of a mature corn crop to trichloroethylene from a contaminated aquifer. The methodology was then applied to the case of Hill AFB to determine the ability of the methodology to provide information about a specific exposure. Current procedures sample for food contamination but do not attempt to predict exposure problems. A review of the potential exposure pathways from the aquifer to the crop was conducted. Based on this review, the exposures due to soil gas and irrigation were modeled. Empirical estimated were used to approximate the expected flux of soil gas vaporizing directly from the aquifer. On the basis of this approximation, the exposure the air of the crop canopy was mathematically estimated. Analytical models were developed to simulate the amount of the contaminant reaching the crop from two different means of irrigation. The subsequent exposure once the contaminated irrigation water had reached the crop was modeled both in the air of the crop canopy and the soil phase near the root system. The methodology provided insights into which exposure pathways are more important than others and which environmental parameters most influence the amount of exposure.

Baringer, R.G.

1994-09-01T23:59:59.000Z

88

Central Oregon Irrigation District | Open Energy Information  

Open Energy Info (EERE)

Oregon Irrigation District Oregon Irrigation District Jump to: navigation, search Name Central Oregon Irrigation District Place Redmond, Oregon Zip 97756 Sector Hydro Product Corporation of the State of Oregon that provides municipal, industrial, and agricultural water, as well as hydropower, for central Oregon. References Central Oregon Irrigation District[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Central Oregon Irrigation District is a company located in Redmond, Oregon . References ↑ "Central Oregon Irrigation District" Retrieved from "http://en.openei.org/w/index.php?title=Central_Oregon_Irrigation_District&oldid=343383" Categories: Clean Energy Organizations

89

Characterization of forest crops with a range of nutrient and water treatments using AISA Hyperspectral Imagery.  

SciTech Connect

This research examined the utility of Airborne Imaging Spectrometer for Applications (AISA) hyperspectral imagery for estimating the biomass of three forest crops---sycamore, sweetgum and loblolly pine--planted in experimental plots with a range of fertilization and irrigation treatments on the Savannah River Site near Aiken, South Carolina.

Gong, Binglei; Im, Jungho; Jensen, John, R.; Coleman, Mark; Rhee, Jinyoung; Nelson, Eric

2012-07-01T23:59:59.000Z

90

Alternative backing up pump for turbomolecular pumps  

DOE Patents (OSTI)

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

Myneni, Ganapati Rao (Yorktown, VA)

2003-04-22T23:59:59.000Z

91

Advanced Manufacturing Office: Pump Systems  

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

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

92

Pumping Fluid Condensation in Oil Diffusion Pumps  

Science Conference Proceedings (OSTI)

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

M. H. Hablanian

1972-01-01T23:59:59.000Z

93

Columbia Rural Electric Association - Irrigation Energy Efficiency...  

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

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

94

Columbia Rural Electric Association - Irrigation Energy Efficiency...  

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

Power Administration, offers an irrigation energy efficiency program for its agricultural customers. Stationary systems are not eligible for this program due to the number of...

95

Metering Secondary Water in Residential Irrigation Systems.  

E-Print Network (OSTI)

??The use of residential secondary or dual water systems for irrigation purposes is common in the western United States where water supplies are scarce. While… (more)

Richards, Gregory L.

2009-01-01T23:59:59.000Z

96

Rotary magnetic heat pump  

DOE Patents (OSTI)

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

Kirol, Lance D. (Shelly, ID)

1988-01-01T23:59:59.000Z

97

Rotary magnetic heat pump  

DOE Patents (OSTI)

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

Kirol, L.D.

1987-02-11T23:59:59.000Z

98

Regional Differences in the Influence of Irrigation on Climate  

Science Conference Proceedings (OSTI)

A global climate model experiment is performed to evaluate the effect of irrigation on temperatures in several major irrigated regions of the world. The Community Atmosphere Model, version 3.3, was modified to represent irrigation for the ...

David Lobell; Govindasamy Bala; Art Mirin; Thomas Phillips; Reed Maxwell; Doug Rotman

2009-04-01T23:59:59.000Z

99

Liquid metal electric pump  

DOE Patents (OSTI)

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

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

1992-01-14T23:59:59.000Z

100

Impact of potential large-scale irrigation on the West African Monsoon and its dependence on location of irrigated area  

Science Conference Proceedings (OSTI)

This study investigates the impact of potential large-scale irrigation on the West African Monsoon using the MIT Regional Climate Model (MRCM). A new irrigation module is implemented to assess the impact of location and scheduling of irrigation on ...

Eun-Soon Im; Marc P. Marcella; Elfatih A. B. Eltahir

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


101

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

DOE Green Energy (OSTI)

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

Argaw, N.

2004-07-01T23:59:59.000Z

102

Irrigation Districts: Establishment of Electric Light and Power...  

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

Irrigation Districts: Establishment of Electric Light and Power Systems: Powers (Nebraska) Irrigation Districts: Establishment of Electric Light and Power Systems: Powers...

103

Turlock Irrigation District - PV Rebate | Department of Energy  

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

Turlock Irrigation District - PV Rebate Turlock Irrigation District - PV Rebate Eligibility Commercial Residential Savings For Solar Buying & Making Electricity Maximum Rebate 50%...

104

Water on Crop Biomass and Soil Permeability FINAL TECHNICAL REPORT  

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

Irrigating with Treated Oil and Gas Product Irrigating with Treated Oil and Gas Product Water on Crop Biomass and Soil Permeability FINAL TECHNICAL REPORT Prepared By Terry Brown, Jeffrey Morris, Patrick Richards and Joel Mason Western Research Institute October 1, 2008 to September 1, 2010 DOE Award Number: DE-NT0005681 Report Issued December, 2010 Western Research Institute 365 N 9 th Street Laramie WY 82072 ii DOE DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government, nor any agency thereof, nor any of their employees makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus,

105

Simulating the Effects of Irrigation over the United States in a Land Surface Model Based on Satellite-Derived Agricultural Data  

Science Conference Proceedings (OSTI)

A novel method is introduced for integrating satellite-derived irrigation data and high-resolution crop-type information into a land surface model (LSM). The objective is to improve the simulation of land surface states and fluxes through better ...

Mutlu Ozdogan; Matthew Rodell; Hiroko Kato Beaudoing; David L. Toll

2010-02-01T23:59:59.000Z

106

Radioactivity in food crops  

SciTech Connect

Published levels of radioactivity in food crops from 21 countries and 4 island chains of Oceania are listed. The tabulation includes more than 3000 examples of 100 different crops. Data are arranged alphabetically by food crop and geographical origin. The sampling date, nuclide measured, mean radioactivity, range of radioactivities, sample basis, number of samples analyzed, and bibliographic citation are given for each entry, when available. Analyses were reported most frequently for /sup 137/Cs, /sup 40/K, /sup 90/Sr, /sup 226/Ra, /sup 228/Ra, plutonium, uranium, total alpha, and total beta, but a few authors also reported data for /sup 241/Am, /sup 7/Be, /sup 60/Co, /sup 55/Fe, /sup 3/H, /sup 131/I, /sup 54/Mn, /sup 95/Nb, /sup 210/Pb, /sup 210/Po, /sup 106/Ru, /sup 125/Sb, /sup 228/Th, /sup 232/Th, and /sup 95/Zr. Based on the reported data it appears that radioactivity from alpha emitters in food crops is usually low, on the order of 0.1 Bq.g/sup -1/ (wet weight) or less. Reported values of beta radiation in a given crop generally appear to be several orders of magnitude greater than those of alpha emitters. The most striking aspect of the data is the great range of radioactivity reported for a given nuclide in similar food crops with different geographical origins.

Drury, J.S.; Baldauf, M.F.; Daniel, E.W.; Fore, C.S.; Uziel, M.S.

1983-05-01T23:59:59.000Z

107

Beneficial uses of geothermal energy description and preliminary results for phase 1 of the Raft River irrigation experiment  

DOE Green Energy (OSTI)

The first phase of an experiment using geothermal water for irrigation is described and preliminary results are discussed. The water was from a moderate temperature well, having salinity of about 2000 ppM, and is considered characteristic of the types of geothermal fluids that will be obtained from the young volcanic/young sediment formations of the northern intermountain west. The activity was completed at a location adjacent to ERDA's Raft River Geothermal Project in southern Idaho. About 12.5 acres, of which part had no previous cultivation, were subdivided by crops and irrigation practices for investigation with the geothermal water and a control comparison water from the relatively pure Raft River. Flood and sprinkler application techniques were used and wheat, barley, oats, grasses, alfalfa, potatoes, and garden vegetables were successfully grown. An accompanying experiment evaluated the behavior of an established alfalfa crop located nearby, when most of the irrigation water was geothermal. The experiment addressed heavy metal uptake in plants, plant fluoride retention and damage, plant tolerances to salts, soil alterations and other behavior as a result of the geothermal fluids, all of which were largely believed to eliminate geothermal water from contention for crop growing utilization. Not all analyses and results are complete in this reporting, but first results indicate no apparent difference between the geothermal watered crops and those obtained using the fresh water control. Extensive chemical analyses, neutron activation analyses, and other evaluations of crop samples are discussed, and some of the findings are presented. Although evaluation of crop yields was not an objective, extrapolations from samples indicate that yield results were comparable to those commonly found in the area, and the yield varied little between water sources. (JGB)

Schmitt, R.C.; Spencer, S.G.

1977-01-01T23:59:59.000Z

108

Electrokinetic pumps and actuators  

DOE Green Energy (OSTI)

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

Phillip M. Paul

2000-03-01T23:59:59.000Z

109

NREL: Learning - Pumped Hydropower  

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

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

110

Detection of pump degradation  

SciTech Connect

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

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

1995-08-01T23:59:59.000Z

111

Irrigation Training Program For Texas Agricultural Producers  

E-Print Network (OSTI)

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

Harris, B.L.

2010-02-01T23:59:59.000Z

112

Evaluation of Irrigation Efficiency Strategies for Far West Texas: Feasibility, Water Savings And Cost Considerations  

E-Print Network (OSTI)

ABSTRACT Texas recently completed its second round of nationally recognized water planning. The Water Plan for the state addresses how each of 16 regions will supply projected water demands for the next 50 years. Water availability in these plans is based on supply conditions experienced during the drought of record, that is, the severe drought conditions in the 1950's. In arid Far West Texas, Region E in the State Plan, agriculture is projected to have the largest unmet demand for water during drought. This situation is similar to many other irrigated agricultural production regions in the U.S. and world that rely upon limited and variable water supplies. In the Far West Texas (Region E) 50-year Water Plan, the primary strategy proposed to mitigate the impact of insufficient water supplies for agriculture is implementation of water conservation best management practices. However, the conservation practices identified were generic and gave a wide range of potential water savings compiled from many other sources and for other locations and conditions. The feasibility and amount of water saved by any given conservation practice varies substantially across regions, specific location, type and quality of water supplies, delivery systems and operational considerations, crops produced, irrigation technologies in use, and location specific costs and returns of implementation. The applicability to and actual water savings of the proposed practices in Far West Texas were generally unknown. This report evaluates the applicability, water savings potential, implementation feasibility and cost effectiveness of seventeen irrigated agriculture water conservation practices in Far West Texas during both drought and full water supply conditions. Agricultural, hydrologic, engineering, economic, and institutional conditions are identified and examined for the three largest irrigated agricultural areas which account for over 90% of total irrigated agricultural acreage in Far West Texas. Factors considered in evaluating conservation strategies included water sources, use, water quality, cropping patterns, current irrigation practices, delivery systems, technological alternatives, market conditions and operational constraints. The overall conclusion is that very limited opportunities exist for significant additional water conservation in Far West Texas irrigated agriculture. The primary reasons can be summarized by: the most effective conservation practices have already been implemented and associated water savings realized throughout the region; reduced water quality and the physical nature of gravity flow delivery limit or prohibit implementation of higher efficiency pressurized irrigation systems; increased water use efficiency upstream has the net effect of reducing water supplies and production of downstream irrigators; and, water conservation implementation costs for a number of practices exceed the agricultural value and benefits of any water saved. Those practices that suggest economic efficient additional water conservation included lining or pipelining district canals and the very small potential for additional irrigation scheduling and tail water recovery systems. In nearly all cases, these practices have been adopted to a large extent if applicable, further emphasizing the very limited opportunities for additional conservation. If all of these strategies were implemented, the water conserved would satisfy less than 25% of the projected unmet agricultural water demand in 2060 during drought-of-record conditions Overall, there are no silver bullets for agricultural water conservation in Far West Texas short of taking irrigated land out of production when water supplies are limited.

Michelsen, Ari; Chavez, Marissa; Lacewell, Ron; Gilley, James; Sheng, Zhuping

2009-06-01T23:59:59.000Z

113

Subsea Pumped Hydro Storage.  

E-Print Network (OSTI)

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

Erik, Almen John

2013-01-01T23:59:59.000Z

114

Minimize pump downtime  

Science Conference Proceedings (OSTI)

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

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

1995-06-01T23:59:59.000Z

115

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

E-Print Network (OSTI)

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 head at Garden City and Stiles were 48 m and 80 m, respectively.A double Fourier series analysis of wind speed characteristics was done to better predict wind speed for the test areas and the use of a N=3 and M=7 harmonic term was suggested for this region. A relationship of flow pumped from a wind powered pumping system was developed to better predict flow rate based on available wind speed and pumping water depth data.The economic analysis of this system showed that if the local utility sold power at rate of $0.09kWh then a wind powered pumping system can be economically feasible if the cost of a 10 kW wind turbine was less than $5000 payable over 30 years at 5% interest rate. The current cost of such a system is $30,000, making it prohibitively expensive. However, such a system may become a more economical alternative as the cost of electricity increases and the cost of the turbines decrease.

Molla, Saiful Islam

1997-01-01T23:59:59.000Z

116

Economic analysis of wind-powered crop drying. Final report  

DOE Green Energy (OSTI)

Potential applications of wind energy include not only large central turbines that can be utilized by utilities, but also dispersed systems for farms and other applications. The US Departments of Energy (DOE) and Agriculture (USDA) currently are establishing the feasibility of wind energy use in applications where the energy can be used as available, or stored in a simple form. These applications include production of hot water for rural sanitation, heating and cooling of rural structures and products, drying agricultural products, and irrigation. This study, funded by USDA, analyzed the economic feasibility of wind power in crop drying. Drying of corn, soybeans, rice, peanuts, tobacco, and dehydrated alfalfa were addressed.

Garling, W.S.; Harper, M.R.; Merchant-Geuder, L.; Welch, M.

1980-03-01T23:59:59.000Z

117

Well-pump alignment system  

DOE Patents (OSTI)

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

Drumheller, Douglas S. (Cedar Crest, NM)

1998-01-01T23:59:59.000Z

118

NEUTRONIC REACTOR FUEL PUMP  

DOE Patents (OSTI)

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

Cobb, W.G.

1959-06-01T23:59:59.000Z

119

Detection of pump degradation  

Science Conference Proceedings (OSTI)

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

Casada, D.

1994-12-31T23:59:59.000Z

120

Modesto Irrigation District | Open Energy Information  

Open Energy Info (EERE)

Modesto Irrigation District Modesto Irrigation District (Redirected from MID) Jump to: navigation, search Name Modesto Irrigation District Place Modesto, California Utility Id 12745 Utility Location Yes Ownership P NERC Location WECC NERC WECC Yes ISO CA Yes Operates Generating Plant Yes Activity Generation Yes Activity Transmission Yes Activity Buying Transmission Yes Activity Distribution Yes Activity Wholesale Marketing Yes Activity Retail Marketing Yes Activity Bundled Services Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] SGIC[2] Energy Information Administration Form 826[3] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Modesto Irrigation District Smart Grid Project was awarded $1,493,149

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


121

Vera Irrigation District | Open Energy Information  

Open Energy Info (EERE)

Vera Irrigation District Vera Irrigation District Jump to: navigation, search Name Vera Irrigation District #15 Place Washington Utility Id 19784 Utility Location Yes Ownership P NERC Location WECC NERC WECC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png LARGE POWER Commercial LARGE POWER INDUSTRIAL Industrial NEW SMALL GENERAL Commercial RESIDENTIAL RATES Residential Average Rates Residential: $0.0556/kWh Commercial: $0.0582/kWh References ↑ "EIA Form EIA-861 Final Data File for 2010 - File1_a" Retrieved from "http://en.openei.org/w/index.php?title=Vera_Irrigation_District&oldid=411927

122

Aguila Irrigation District | Open Energy Information  

Open Energy Info (EERE)

Aguila Irrigation District Aguila Irrigation District Jump to: navigation, search Name Aguila Irrigation District Place Arizona Utility Id 737 Utility Location Yes Ownership P NERC Location WECC NERC WECC Yes Activity Buying Transmission Yes Activity Buying Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Rate 3 Commercial Average Rates Industrial: $0.0582/kWh References ↑ "EIA Form EIA-861 Final Data File for 2010 - File1_a" Retrieved from "http://en.openei.org/w/index.php?title=Aguila_Irrigation_District&oldid=408941" Categories: EIA Utility Companies and Aliases

123

Irrigation Training Program (South Texas Edition)  

E-Print Network (OSTI)

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 Agriculture Natural Resources Conservation Service. Special appreciation is expressed to the individual authors and technical advisors who have contributed to the information and publications contained in this manual; the agencies, irrigation districts, groundwater conservation districts, Texas Agricultural Irrigation Association and members of other associations who have contributed time and leadership in the delivery of irrigation training programs; and to the site coordinators and those who have shared their expertise as speakers at individual programs throughout the state.

Porter, D.

2008-10-01T23:59:59.000Z

124

Irrigation Training Program (North Texas edition)  

E-Print Network (OSTI)

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 Agriculture Natural Resources Conservation Service. Special appreciation is expressed to the individual authors and technical advisors who have contributed to the information and publications contained in this manual; the agencies, irrigation districts, groundwater conservation districts, Texas Agricultural Irrigation Association and members of other associations who have contributed time and leadership in the delivery of irrigation training programs; and to the site coordinators and those who have shared their expertise as speakers at individual programs throughout the state.

Porter, D.

2008-08-01T23:59:59.000Z

125

Energy Basics: Air-Source Heat Pumps  

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

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

126

NORMETEX PUMP ALTERNATIVES STUDY  

SciTech Connect

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

Clark, Elliot A.

2013-04-25T23:59:59.000Z

127

Granby Pumping Plant  

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

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

128

Energy Basics: Heat Pump Systems  

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

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

129

Environmental enchancement using short-rotation tree crops: research results and directions  

DOE Green Energy (OSTI)

Short-rotation woody crops (SRWC) and perennial grasses used as biomass feedstocks for energy and fiber can provide multiple economic and environmental benefits. Site-specific environmental studies are providing information needed to help evaluate the economic and environmental impacts of biomass production at both local and regional scales. Erosion and chemical movement from an annual row crop, switchgrass, and tree crop with and without a groundcover are being compared in the Southeast. Studies of SRWC productivity on the South Carolina coastal plain are comparing surface and subsurface movement of chemicals applied under different fertilization and irrigation regimes, and addressing use of mill and agricultural residues to enhance crop production. Results are helping to assess the effects of biomass crops produced on different principal soil types and to match tree species with appropriate sites to maximize productivity and minimize environmental impacts. Studies are comparing wildlife use of biomass crops to row crops, grasslands, and natural forests. Results to date show that SRWCs support greater bird diversity than row crops, but less than natural forests; switchgrass plantings extend habitat for grasslands birds. Collaboration with an industrial partner on diverse SRWC plantings in the Southeast is addressing the relationship between plantings of different acreage, age, tree species, and landscape context and breeding bird use. Information from wildlife diversity, water, and soil quality studies can be used by the Biofuels Feedstock Development Program (BFDP), researchers, producers, and industry to identify management strategies to maintain productivity While enhancing the environment.

Tolbert, V.R.; Schiller, A.

1996-10-01T23:59:59.000Z

130

The Environmental Impacts of Subsidized Crop Insurance  

E-Print Network (OSTI)

Impacts of Subsidized Crop Insurance page 17 ReferencesR.A. Kramer. “Experience with Crop Insurance Programs in theUnited States. ” Crop Insurance for Agricultural

LaFrance, Jeffrey T.; Shimshack, J. P.; Wu, S. Y.

2001-01-01T23:59:59.000Z

131

Spatial Patterns Confound Experiments in Orchard Crops  

E-Print Network (OSTI)

patterns differ among sites, crops, and process of interest,currently lacking in the tree crops, specifically, and thecommonly used in tree crop experiments and in fertilizer

Rosenstock, Todd S; Plant, Richard E; Brown, Patrick H

2009-01-01T23:59:59.000Z

132

Energy Basics: Geothermal Heat Pumps  

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

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

133

Heat pumps | Open Energy Information  

Open Energy Info (EERE)

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

134

Pressure charged airlift pump  

DOE Patents (OSTI)

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

Campbell, Gene K. (Las Vegas, NV)

1983-01-01T23:59:59.000Z

135

Legume Crop Genomics  

Science Conference Proceedings (OSTI)

This book will present this technical theme in a manner that should help many readers answer the question, "What is genomics?" And finally, this book should help readers formulate an opinion on the question, "Why is genomic research needed?" Legume Crop Ge

136

Crop Insurance Terms and Definitions  

E-Print Network (OSTI)

This publication is a glossary of terms used by the crop insurance industry. There are definitions for terms used in crop insurance documents and for terms pertaining to coverage levels, farming, reports, units and parties to contracts.

Stokes, Kenneth; Waller, Mark L.; Outlaw, Joe; Barnaby, G. A. Art

2008-10-17T23:59:59.000Z

137

RENEWABLE LIQUID GETTERING PUMP  

DOE Patents (OSTI)

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

Batzer, T.H.

1962-08-21T23:59:59.000Z

138

Heat Pumps | Department of Energy  

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

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

139

Weed Management in Pulse Crops  

E-Print Network (OSTI)

During At harvest #12;GoldSky ­ Crop Rotation · 9 Months: alfalfa, barley, canola, chickpea, dry bean PEA CAMELINA CANOLA BARLEY GOLDSKY Crop Rotation Study #12;GoldSky Crop Rotation Study ­ Herbicide #12;0 10 20 30 40 50 60 70 80 90 Lentil Canola Camelina Barley Field Pea Oat VisualDamage(%) GoldSky 1

Maxwell, Bruce D.

140

Biomass Energy Crops: Massachusetts' Potential  

E-Print Network (OSTI)

Biomass Energy Crops: Massachusetts' Potential Prepared for: Massachusetts Division of Energy;#12;Executive Summary In Massachusetts, biomass energy has typically meant wood chips derived from the region's extensive forest cover. Yet nationally, biomass energy from dedicated energy crops and from crop residues

Schweik, Charles M.

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


141

GAS METERING PUMP  

DOE Patents (OSTI)

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

George, C.M.

1957-12-31T23:59:59.000Z

142

Geothermal Heat Pumps  

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

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

143

Absorption heat pump system  

DOE Patents (OSTI)

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

Grossman, Gershon (Oak Ridge, TN)

1984-01-01T23:59:59.000Z

144

Absorption heat pump system  

DOE Patents (OSTI)

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

Grossman, G.

1982-06-16T23:59:59.000Z

145

Heat Pump Systems  

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

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

146

Direct nuclear pumped laser  

DOE Patents (OSTI)

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

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

1978-01-01T23:59:59.000Z

147

Merced Irrigation District | Open Energy Information  

Open Energy Info (EERE)

Irrigation District Irrigation District Jump to: navigation, search Name Merced Irrigation District Place California Utility Id 12312 Utility Location Yes Ownership P NERC Location WECC NERC WECC Yes Operates Generating Plant Yes Activity Generation Yes Activity Buying Transmission Yes Activity Distribution Yes Activity Wholesale Marketing Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png SCHEDULE AG-2 AGRICULTURAL DEMAND GENERAL SERVICE Industrial SCHEDULE ED-2 COMMERCIAL / INDUSTRIAL LARGE DEMAND GENERAL SERVICE Industrial SCHEDULE ED-2P COMMERCIAL / INDUSTRIAL LARGE DEMAND PRIMARY SERVICE

148

Turlock Irrigation District | Open Energy Information  

Open Energy Info (EERE)

Turlock Irrigation District Turlock Irrigation District Jump to: navigation, search Name Turlock Irrigation District Place California Utility Id 19281 Utility Location Yes Ownership P NERC Location WECC NERC WECC Yes ISO Other Yes Operates Generating Plant Yes Activity Generation Yes Activity Transmission Yes Activity Buying Transmission Yes Activity Distribution Yes Activity Buying Distribution Yes Activity Wholesale Marketing Yes Alt Fuel Vehicle Yes Alt Fuel Vehicle2 Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] Energy Information Administration Form 826[2] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Schedule BP Bulk Power Industrial, Demand Metered 7,000 kW and Over,

149

Well-pump alignment system  

DOE Patents (OSTI)

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

Drumheller, D.S.

1998-10-20T23:59:59.000Z

150

Best Management Practice: Water-Efficient Irrigation | Department of Energy  

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

Irrigation Irrigation Best Management Practice: Water-Efficient Irrigation October 7, 2013 - 3:10pm Addthis 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. Failure to do so can result in losing more than 50% of irrigation water due to evaporation, wind, poor management, and/or improper system design, installation, or maintenance. With the irrigation system hardware operating efficiently, it is important to consider the irrigation schedule, which dictates the amount and timing of the water applied. Water changes with the seasons as should your irrigation schedule. Many landscapes are watered at the same level all year, adding unnecessary water for months at a time. Over-watering can

151

Pumping performance of a new type of hybrid molecular pump  

Science Conference Proceedings (OSTI)

A new type of hybrid molecular pump of high performance and reliability has been developed. The pump’s rotational speed is 18?000 rpm. The pump is constructed with eleven stages of a turbomolecular pump and a drum multigroove drum molecular pump in which the clearance between rotor and stationary part is 0.35 mm; the rotor’s deformation forms a cuneiform channel of the proper working clearance to ensure the pump’s performance and working reliability. The pump can operate within the pressure range of 5×102–10?6 Pa for a oil?free vacuum with the maximum speed of 400 l/s. The maximum compression ratio for H2 is over 4000. It can be widely used in vacuum processes

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

1992-01-01T23:59:59.000Z

152

Underground pumped hydroelectric storage  

DOE Green Energy (OSTI)

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

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

1984-07-01T23:59:59.000Z

153

Mechanical Compression Heat Pumps  

E-Print Network (OSTI)

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

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

1986-06-01T23:59:59.000Z

154

Crop to wild introgression in lettuce: following the fate of crop genome segments in backcross populations  

E-Print Network (OSTI)

article as: Uwimana et al. : Crop to wild introgression infollowing the fate of crop genome segments in backcrossto the wild parent reduces the crop genome content in amount

2012-01-01T23:59:59.000Z

155

Crop specific micronutrient formulations for limited resource situation for horticultural crops  

E-Print Network (OSTI)

management in horticultural crops, but this approach is nothectares under horticultural crops are managed in about 2.2monitoring was done for crops (mango, banana, orange) for

Muthaia, Edward Raja Dr

2009-01-01T23:59:59.000Z

156

Conservation tillage and cover cropping influence soil properties in San Joaquin Valley cotton-tomato crop  

E-Print Network (OSTI)

STNO Fertilizer Cover crop Total Harvest Balance . . . . . .conservation tillage, cover crop CTNO: conservation tillagestandard tillage, cover crop STNO: standard tillage only

Veenstra, Jessica; Horwath, William; Mitchell, Jeffrey; Munk, Dan

2006-01-01T23:59:59.000Z

157

Fusion reactor pumped laser  

DOE Patents (OSTI)

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

Jassby, Daniel L. (Princeton, NJ)

1988-01-01T23:59:59.000Z

158

Velocity pump reaction turbine  

DOE Patents (OSTI)

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

House, Palmer A. (Walnut Creek, CA)

1982-01-01T23:59:59.000Z

159

Velocity pump reaction turbine  

DOE Patents (OSTI)

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

House, Palmer A. (Walnut Creek, CA)

1984-01-01T23:59:59.000Z

160

Acoustical heat pumping engine  

DOE Patents (OSTI)

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

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

1983-08-16T23:59:59.000Z

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


161

Acoustical heat pumping engine  

DOE Patents (OSTI)

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

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

1983-08-16T23:59:59.000Z

162

Pumped oil feed systems for rotary vacuum pumps  

Science Conference Proceedings (OSTI)

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

H. Wycliffe; B. D. Power

1981-01-01T23:59:59.000Z

163

Linear induction pump  

DOE Patents (OSTI)

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

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

1985-03-19T23:59:59.000Z

164

Shrouded inducer pump  

DOE Patents (OSTI)

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

Meng, S.Y.

1989-08-08T23:59:59.000Z

165

Explosively pumped laser light  

DOE Patents (OSTI)

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

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

1991-01-01T23:59:59.000Z

166

Indexes of pumps for oil field pumping units  

Science Conference Proceedings (OSTI)

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

Ibragimov, E.S.

1995-07-01T23:59:59.000Z

167

HORTICULTURAL & FOREST CROPS 2012 Floral Crops: Insects 5-19  

E-Print Network (OSTI)

. In order to use a pesticide safely and effectively, the product label should be read thoroughly each time. Effective application of pesticides depends on: proper timing, favorable treatment conditions of temperature;HORTICULTURAL & FOREST CROPS 2012 5-20 Floral Crops: Insects · Apply pesticides when foliage is dry

Liskiewicz, Maciej

168

Pumped Hydro | Open Energy Information  

Open Energy Info (EERE)

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

169

SURVEY OF SODIUM PUMP TECHNOLOGY  

SciTech Connect

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

Nixon, D.R.

1963-06-01T23:59:59.000Z

170

Evaluated crop evapotranspiration over a region of irrigated orchards with the improved ACASA-WRF model  

Science Conference Proceedings (OSTI)

Among the uncertain consequences of climate change on agriculture are changes in timing and quantity of precipitation together with predicted higher temperatures and changes in length of growing season. Our understanding of how these uncertainties ...

Matthias Falk; R. D. Pyles; S.L. Ustin; K.T. Paw U; L. Xu; M.L. Whiting; B.L. Sanden; P.H. Brown

171

Global Seed and Crop Technology  

E-Print Network (OSTI)

Adventitious presence deserves discussion to understand whether farmers engaged in conventional, organic, and transgenic agriculture can coexist as neighbors using known and practical agronomic practices. When a farmer buys and sows certified seed of his or her chosen crop variety, the crop starts with the highest degree of purity deemed commercially achievable, which then becomes increasingly less pure as various

L. Kershen; Alan Mchughen; Earl Sneed; Centennial Professor; Law Biotechnology Specialist; Thomas Parker Redick

2005-01-01T23:59:59.000Z

172

Crop residues as feedstock for renewable fuels  

Science Conference Proceedings (OSTI)

Nutrient removal and net costs weigh on decisions to use crop residues as biofuel feedstocks. Crop residues as feedstock for renewable fuels Inform Magazine Biofuels and Bioproducts and Biodiesel Inform Archives Crop residues as feedstock for rene

173

Cassava, a potential biofuel crop in China  

E-Print Network (OSTI)

breeding program for cassava. Crop Sci 1998; 38: 325-332. [opportunities for an ancient crop. seventh regional cassavaCassava, a potential biofuel crop in China Christer Jansson

Jansson, C.

2010-01-01T23:59:59.000Z

174

Modesto Irrigation District | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search Jump to: navigation, search Name Modesto Irrigation District Place Modesto, California Utility Id 12745 Utility Location Yes Ownership P NERC Location WECC NERC WECC Yes ISO CA Yes Operates Generating Plant Yes Activity Generation Yes Activity Transmission Yes Activity Buying Transmission Yes Activity Distribution Yes Activity Wholesale Marketing Yes Activity Retail Marketing Yes Activity Bundled Services Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] SGIC[2] Energy Information Administration Form 826[3] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Modesto Irrigation District Smart Grid Project was awarded $1,493,149 Recovery Act Funding with a total project value of $2,986,298.

175

Global irrigation demand - A holistic approach  

Science Conference Proceedings (OSTI)

To develop a research track on global irrigation demand and the use of future water resources to help feed the world, we need to adopt a holistic approach to understand inter-dependencies and the main drivers of the global water system and unravel positive (reinforcing) and negative (balancing) feedback loops that can lead to cascading consequences. Thus, there needs to be more research dedicated to 1) the modeling of the agricultural and water systems as components within an integrated assessment human-Earth modeling framework, 2) the understanding of the linkages between the physical processes and the human system, and to integrate them in an economic framework to capture the dynamics of market price, and institutional regulations. This editorial discusses the importance of tackling the global irrigation problem in an integrated assessment modeling framework.

Hejazi, Mohamad I.; Edmonds, James A.; Chaturvedi, Vaibhav

2012-09-30T23:59:59.000Z

176

SHINE VACUUM PUMP TEST VERIFICATION  

Science Conference Proceedings (OSTI)

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

Morgan, G.; Peters, B.

2013-09-30T23:59:59.000Z

177

Water displacement mercury pump  

DOE Patents (OSTI)

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

Nielsen, Marshall G. (Woodside, CA)

1985-01-01T23:59:59.000Z

178

Water displacement mercury pump  

DOE Patents (OSTI)

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

Nielsen, M.G.

1984-04-20T23:59:59.000Z

179

Fusion reactor pumped laser  

DOE Patents (OSTI)

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

Jassby, D.L.

1987-09-04T23:59:59.000Z

180

Multiple source heat pump  

DOE Patents (OSTI)

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

Ecker, Amir L. (Duncanville, TX)

1983-01-01T23:59:59.000Z

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


181

Break-Even Investment in a Wind Energy Conversion System for an Irrigated Farm on the Texas High Plains  

E-Print Network (OSTI)

The purpose of this study was to quantify the benefits of using a wind energy system for irrigation. The value of wind energy was estimated on both a static basis (where the annual value of wind power was assumed to be constant over the life of the machine) and on a temporal basis (where the annual value of wind power was estimated recursively). The model for static analysis contained two components which were applied consecutively. The first was a linear programming (LP) model for the High Plains region. Production activities were included which allowed both optimal and non-optimal timing of post-plant irrigations, giving the producer added flexibility in the employment of limiting water resources. The optimal irrigation schedule determined by the LP solution was used as input to the second component. A simulation model matched stochastically generated estimates of wind power availability with irrigation fuel requirements (derived from the profit maximizing irrigation schedule) by three-hour time periods throughout a year. For the temporal analysis, a Fortran subroutine was added to the LP model to operate the model recursively over the life of the wind system and to account for the annual decline of the aquifer. Both fixed and variable costs were included. The basic LP model was applied to develop the benchmark case (i.e., without wind power). The farm operation with wind power was analyzed by applying the LP model with the monthly expectations of wind-generated electricity added. Two wind machines were analyzed, with rate outputs of 40 to 60 kilowatts (KW). Each was applied to the Northern and Southern Texas High Plains over a range of land and water resource situations. Breakeven investment was estimated at discount rates of three, five and ten percent. Cropping patterns on the Southern High Plains were dominated by irrigated cotton and were insensitive to changes in crop or electricity prices. On the Northern High Plains, irrigated corn and grain sorghum were the major crops, with acreage reverting to dryland wheat at the higher electricity prices. The cropping patterns in this area were impacted heavily by labor restrictions. Consideration of wind power had little effect in determining optimal cropping patterns. When wind power was applied to an irrigated farm on a static basis, the set of crop prices applied had little effect on the annual value of a wind system. Value of wind power was increased, but by smaller proportions than associated increases in the price of electricity. Each machine size had a greater value when operated on the larger of the two applicable land units (100 acres for the 40 KW machine and 144 acres for the 60 KW system). The 60 KW system was also tested on the 100 acre unit but returned less per KW than the 40 KW system. Available wind power in the temporal analysis was less than in the static analysis, thus temporal estimates of wind system value should be regarded as conservative. On the Southern High Plains, break-even investment was decreased slightly from the static analysis. However, in some situations on the Northern High Plains, break-even investment increased. This indicates that the value of wind power could increase as the aquifer declines in some situations. Break-even investment increased by up to 80 percent when the price of electricity was increased by $.005 per KWH per year. The most significant effect of wind power was that it allowed the maintenance of irrigation levels which, without wind power, had been made uneconomical. These results indicate that, at least in the future when wind system costs decrease and stabilize, wind-assisted irrigation could be an economically viable alternative for Texas High Plains producers. The results are limited by the need for future research regarding the effect of irrigation timing on crop yield as well as some of the long-term characteristics of wind system operation, such as durability and the requirements and costs for system repairs and maintenance.

Hardin, D. C.; Lacewell, R. D.

1981-01-01T23:59:59.000Z

182

Reduce Pumping Costs through Optimum Pipe Sizing  

SciTech Connect

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

2005-10-01T23:59:59.000Z

183

Select an Energy-Efficient Centrifugal Pump  

SciTech Connect

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

2005-10-01T23:59:59.000Z

184

Pump Systems Optimization: Energy Efficiency  

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

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

185

Dual valve well pump installation  

SciTech Connect

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

Holm, D. R.

1985-10-22T23:59:59.000Z

186

Save by absorption heat pumping  

SciTech Connect

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

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

1987-12-01T23:59:59.000Z

187

Hydride heat pump  

DOE Patents (OSTI)

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

Cottingham, James G. (Center Moriches, NY)

1977-01-01T23:59:59.000Z

188

Thermally activated heat pumps  

SciTech Connect

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

NONE

1995-05-01T23:59:59.000Z

189

Ground-coupled heat pump systems: a pumping analysis.  

E-Print Network (OSTI)

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

Mays, Cristin Jean

2012-01-01T23:59:59.000Z

190

Columbia Rural Electric Association- Irrigation Energy Efficiency Rebate Program  

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

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

191

Chemical heat pump  

DOE Patents (OSTI)

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

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

1980-01-01T23:59:59.000Z

192

Cover Crops for the Garden  

E-Print Network (OSTI)

matter for your soil or compost pile. Organic matter is thatin the spring or made into compost, cover crops will act asgathered up and added to your compost pile. The first method

2008-01-01T23:59:59.000Z

193

Absorption heat pump system  

DOE Patents (OSTI)

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

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

1984-01-01T23:59:59.000Z

194

Heat pump arrangement  

SciTech Connect

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

Abrahamsson, T.; Hansson, K.

1981-03-03T23:59:59.000Z

195

CRBR pump water test experience  

Science Conference Proceedings (OSTI)

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

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

1983-01-01T23:59:59.000Z

196

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

DOE Green Energy (OSTI)

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.

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

1993-07-01T23:59:59.000Z

197

Chemical heat pump  

DOE Patents (OSTI)

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

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

1984-01-01T23:59:59.000Z

198

Chemical heat pump  

DOE Patents (OSTI)

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

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

1984-01-01T23:59:59.000Z

199

Chemical heat pump  

DOE Patents (OSTI)

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

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

1981-01-01T23:59:59.000Z

200

Chemical heat pump  

DOE Patents (OSTI)

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

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

1984-01-01T23:59:59.000Z

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


201

Heat pump apparatus  

DOE Patents (OSTI)

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

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

1983-01-01T23:59:59.000Z

202

Microhydropower Turbines, Pumps, and Waterwheels  

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

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

203

Heat Pumps | Department of Energy  

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

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

204

Geothermal heat pump analysis article  

U.S. Energy Information Administration (EIA)

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

205

Effect of continuous cropping on changes in crop productivity nutrient budgets and soil properties with and without FYM under pearl millet - mustard – cowpea cropping sequence  

E-Print Network (OSTI)

KKM. In: Soil fertility and crop production under long-termfertilization for sustaining crop productivity at Punjabimportant factors that limit crop yield. Addition of organic

PATEL, KISHORBHAI PARSOTTAM; Swarnkar, Puspkant K; Singh, Mahavir

2009-01-01T23:59:59.000Z

206

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

DOE Green Energy (OSTI)

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

Jimenez, R.F.

1994-09-01T23:59:59.000Z

207

LMR (liquid metal reactor) centrifugal pump coastdowns  

Science Conference Proceedings (OSTI)

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

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

1987-01-01T23:59:59.000Z

208

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

E-Print Network (OSTI)

RESOLUTION NO. 2011-82 ADOPTING MODESTO IRRIGATION DISTRICT'S RENEWABLE ENERGY RESOURCES. 2003-245, the Board of Directors ofthe Modesto Irrigation District adopted a Renewable Portfolio Standard (RPS) in an effort to meet 20 percent ofits retail energy sales with renewable resources by 2017

209

Stratified random sampling plan for an irrigation customer telephone survey  

SciTech Connect

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.

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

1986-05-01T23:59:59.000Z

210

Irrigation-Induced Rainfall and the Great Plains  

Science Conference Proceedings (OSTI)

The post–World War II increase in irrigation in the Great Plains represents the largest human-induced hydrologic impact in North America. Drawn primarily from the High Plains aquifer, water applied as irrigation in the region amounts to billions ...

Nathan Moore; Stuart Rojstaczer

2001-08-01T23:59:59.000Z

211

SOLAR PUMPED LASER MICROTHRUSTER  

DOE Green Energy (OSTI)

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

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

2010-02-05T23:59:59.000Z

212

Dual source heat pump  

DOE Patents (OSTI)

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

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

1982-01-01T23:59:59.000Z

213

Threshold values of autoresonant pumping  

E-Print Network (OSTI)

There exists stable growing solution of primary resonant equation for a autoresonant pumping with decreasing amplitude. The primary term of asymptotics is $O(\\sqrt{t})$ and does not depend on order of the force from some interval. We point to the interval for the amplitude of the pumping for which the growing stable solution exists.

O. M. Kiselev

2013-03-19T23:59:59.000Z

214

Heat Pumps in Distillation Processes  

Science Conference Proceedings (OSTI)

Both new and retrofit heat pump installations are often economically justifiable for distillation columns with a temperature differential of 50 degrees F or less. However, this study reveals that the near-term demand for electric heat pumps in petroleum and chemical distillation processes appears very limited.

1984-08-01T23:59:59.000Z

215

Merced Irrigation District - PV Buydown Program | Department of Energy  

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

Merced Irrigation District - PV Buydown Program Merced Irrigation District - PV Buydown Program Merced Irrigation District - PV Buydown Program < Back Eligibility Commercial Nonprofit Residential Savings Category Solar Buying & Making Electricity Maximum Rebate Residential: 8,400 Commercial: $70,000 Program Info State California Program Type Utility Rebate Program Rebate Amount 2.80/W AC, adjusted based on expected performance Provider Merced Irrigation District Merced Irrigation District (MID) offers its residential, commercial and non-profit customers a rebate for installing solar electric photovoltaic (PV) systems on their homes and offices. The rebate is $2.80 per watt (adjusted based on the expected performance of the system) with a maximum of $8,400 for residential systems and $70,000 for non-residential systems.

216

Examining the Interaction of Growing Crops with Local Climate Using a Coupled Crop–Climate Model  

Science Conference Proceedings (OSTI)

This paper examines to what extent crops and their environment should be viewed as a coupled system. Crop impact assessments currently use climate model output offline to drive process-based crop models. However, in regions where local climate is ...

Tom Osborne; Julia Slingo; David Lawrence; Tim Wheeler

2009-03-01T23:59:59.000Z

217

Energy Basics: Ductless, Mini-Split Heat Pumps  

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

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

218

Geothermal Heat Pumps | Department of Energy  

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

Geothermal Heat Pumps Geothermal Heat Pumps August 19, 2013 - 11:12am Addthis Geothermal heat pumps use the constant temperature of the earth as an exchange medium for heat....

219

Available Technologies: Efflux Pumps to Increase Microbial ...  

Efflux Pumps to Increase Microbial Tolerance and Biofuel Production EIB-2845. ... to determining the most effective pumps for any given host and target ...

220

Course Overview Pump Systems Matter Optimization | Department...  

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

Course Overview Pump Systems Matter Optimization Attendees of the "Pump Systems Optimization" one-day course will gain valuable new skills to help them improve...

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


221

Laboratory Equipment - Vacuubrand PC101 Vacuum Pump  

Science Conference Proceedings (OSTI)

Vacuubrand PC101 Vacuum Pump. ... pumping speed: 1.7/2.0 m 3 -h -1; Ultimate ... outlet: 2 bar; Permitted ambient temperature storage/operation: -10°C ...

2012-07-11T23:59:59.000Z

222

Efficiency of unitary heat pumps  

SciTech Connect

The efficiencies of approximately 500 unitary heat pumps, from 30 different manufacturers, certified by the Air Conditioning and Refrigeration Institute (ARI) were examined. The certified units account for about 90% of all unitary heat pumps manufactured in the U.S. with a rated cooling capacity below 135,000 Btu/hr, and thus represent a comprehensive data file of the efficiencies of unitary heat pumps offered for sale in the U.S. A computer was used to group the heat pumps according to type and capacity, and to calculate their coefficients of performance (COP) using the data contained in ARI current Directory (April 1 to July 31, 1973) of Certified Unitary Heat Pumps. The results show that the COP of the heat pumps varied from a low of 1.5 to a high of 3.15 or a factor of 2 between the lowest and the highest efficiency, and that the average COP was 2.1 in cooling and 2.4 in heating. The variations of COP with heat pump size, type, manufacturer and outdoor temperature are presented.

Nwude, J.K.; Roman, A.J.

1973-11-01T23:59:59.000Z

223

Despite benefits, commercialization of transgenic horticultural crops lags  

E-Print Network (OSTI)

L. Gianessi is Director, Crop Protection Research Institute,differ- ent folks in tree crops: What works and what doesBiotechnology of floriculture crops — scientific questions

Clark, David; Klee, Harry; Dandekar, Abhaya

2004-01-01T23:59:59.000Z

224

Survey of glucosinolate variation in leaves of Brassica rapa crops  

E-Print Network (OSTI)

1), representing most major crops of B. rapa, were sampledgsl-containing vegetable crops included in human diet. A fewbeen surveyed in several crops such as broccoli, broccoli

Yang, Bo; Quiros, Carlos F.

2010-01-01T23:59:59.000Z

225

Biological and cultural controls . . . Nonpesticide alternatives can suppress crop pests  

E-Print Network (OSTI)

alternatives can suppress crop pests Nicholas J. Mills Kentsuppression of major arthropod crop pests in California. Wevines, and ?eld and row crops. For example, a historic suc-

Mills, Nicholas J.; Daane, Kent M.

2005-01-01T23:59:59.000Z

226

Blueberry research launches exciting new California specialty crop  

E-Print Network (OSTI)

2. Estimated highbush blueberry crop, 2004 State Growers whoin spearhead- ing specialty crops research and efforts tonew California specialty crop Manuel Jimenez Francis

Jimenez, Manuel; Carpenter, Francis; Molinar, Richard H.; Wright, Kathryn; Day, Kevin R.

2005-01-01T23:59:59.000Z

227

Microbial Diversity-Based Novel Crop Protection Products  

E-Print Network (OSTI)

ial divers ity- based new crop protection products andicultural production of major crop plan ts and industrialand insect pests major crop plants. If the of cell- free

Yalpani, Ronald Flannagan, Rafael Herrmann, James Presnail, Tamas Torok, and Nasser

2011-01-01T23:59:59.000Z

228

A Statistical Profile of Horticultural Crop Farm Industries in California  

E-Print Network (OSTI)

Profile of Horticultural Crop Farm Industries in Californiaproject funded by the Federal Crop Insurance Corporation,Williams. “Model- ing Farm-Level Crop Insurance Demand with

Lee, Hyunok; Blank, Steven C.

2004-01-01T23:59:59.000Z

229

Imperial Irrigation District | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search Jump to: navigation, search Name Imperial Irrigation District Place California Utility Id 9216 Utility Location Yes Ownership P NERC Location WECC NERC WECC Yes ISO CA Yes Operates Generating Plant Yes Activity Generation Yes Activity Transmission Yes Activity Buying Transmission Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] Energy Information Administration Form 826[2] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png GS Schedule GS Commercial SCHEDULE A-2 GENERAL WHOLESALE POWER SERVICE Industrial SCHEDULE AL OUTDOOR AREA LIGHTING SERVICE-HIGH-PRESSURE SODIUM VAPOR 100W Lighting

230

Imperial Irrigation District | Open Energy Information  

Open Energy Info (EERE)

(Redirected from IID) (Redirected from IID) Jump to: navigation, search Name Imperial Irrigation District Place California Utility Id 9216 Utility Location Yes Ownership P NERC Location WECC NERC WECC Yes ISO CA Yes Operates Generating Plant Yes Activity Generation Yes Activity Transmission Yes Activity Buying Transmission Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] Energy Information Administration Form 826[2] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png GS Schedule GS Commercial SCHEDULE A-2 GENERAL WHOLESALE POWER SERVICE Industrial SCHEDULE AL OUTDOOR AREA LIGHTING SERVICE-HIGH-PRESSURE SODIUM VAPOR 100W

231

Analysis of mercury diffusion pumps  

SciTech Connect

Several mercury diffusion pump stages in the Tritium Purification process at the Savannah River Site (SRS) have been removed from service for scheduled preventive maintenance. These stages have been examined to determine if failure has occurred. Evidence of fatigue around the flange portion of the pump has been seen. In addition, erosion and cavitation inside the throat of the venturi tube and corrosion on the other surface of the venturi tube has been observed. Several measures are being examined in an attempt to improve the performance of these pumps. These measures, as well as the noted observations, are described. 4 refs.

Dunn, K.A.

1991-12-31T23:59:59.000Z

232

Analysis of mercury diffusion pumps  

SciTech Connect

Several mercury diffusion pump stages in the Tritium Purification process at the Savannah River Site (SRS) have been removed from service for scheduled preventive maintenance. These stages have been examined to determine if failure has occurred. Evidence of fatigue around the flange portion of the pump has been seen. In addition, erosion and cavitation inside the throat of the venturi tube and corrosion on the other surface of the venturi tube has been observed. Several measures are being examined in an attempt to improve the performance of these pumps. These measures, as well as the noted observations, are described. 4 refs.

Dunn, K.A.

1991-01-01T23:59:59.000Z

233

Geothermal Heat Pumps Tech Update  

Science Conference Proceedings (OSTI)

Geothermal heat pumps (GHPs; a.k.a. Ground Source Heat Pumps or GHPSM) can successfully compete with air source heat pump in performance due to their use of the ground or groundwater as a heat source or heat sink. In 1993, the U.S. Environmental Protection Agency labeled GHPs as “the most energy efficient, cost-effective and environmentally clean space conditioning technology available.” The U.S. Department of Energy, Federal Energy Management Program attested that GHPs are a “highly efficient method of ...

2008-12-19T23:59:59.000Z

234

Heat Pump System Basics | Department of Energy  

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

Heat Pump System Basics Heat Pump System Basics Heat Pump System Basics August 19, 2013 - 11:02am Addthis Like a refrigerator, heat pumps use electricity to move heat from a cool space into a warm space, making the cool space cooler and the warm space warmer. Because they move heat rather than generate heat, heat 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 Mini-Split Heat Pump Ductless versions of air-source heat pumps. Absorption Heat Pump Uses heat as its energy source. Geothermal Heat Pumps Use the constant temperature of the earth as the exchange medium instead of the outside air temperature. Addthis Related Articles A heat pump can provide an alternative to using your air conditioner. | Photo courtesy of iStockPhoto/LordRunar.

235

Engineering quality control of solar-powered intelligent water-saving irrigation  

Science Conference Proceedings (OSTI)

The development tendency of the agricultural irrigation technology is Automatic water-saving irrigation, powered by solar energy and achieved control purposes by moisture content monitoring techniques and the variable irrigation technology. In this paper, ... Keywords: intelligent, quality control, solar power, water-saving irrigation

Liu Xiaochu; Wu Hualong; Ling Jingpeng; Tao Jianhua; Yao Li

2010-03-01T23:59:59.000Z

236

Original paper: An integrated model for simulation of border-check irrigated dairy pasture production systems  

Science Conference Proceedings (OSTI)

Border-check irrigation is the predominant method of applying water to dairy pastures in Australia. Dairy pastures consume 40% of total irrigation water in Australia and, with irrigation water security in Australia under threat from climate variability/change ... Keywords: Dairy pasture systems, Integrated modeling tools, Surface irrigation hydraulics

P. Douglas; K. B. Dassanayake; D. F. Chapman; I. R. Johnson; M. Khanna; H. Malano

2010-10-01T23:59:59.000Z

237

FEMP--Geothermal Heat Pumps  

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

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

238

Torpid Phenomena and Pump Oils  

Science Conference Proceedings (OSTI)

The spasmodic fluctuations of pressure which were formerly prevalent in condensation pumps when operated with oil fillings are less often encountered today because high-gradient heaters have been generally adopted to counter this propensity. High-gradient heating

Kenneth Hickman

1972-01-01T23:59:59.000Z

239

FEMP--Geothermal Heat Pumps  

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

conditioner or refrigera- tor-moves heat from one place to another. In the summer, a geothermal heat pump (GHP) operating in a cooling mode lowers indoor temperatures by...

240

An electrically pumped germanium laser  

E-Print Network (OSTI)

Electrically pumped lasing from Germanium-on-Silicon pnn heterojunction diode structures is demonstrated. Room temperature multimode laser with 1mW output power is measured. Phosphorous doping in Germanium at a concentration ...

Cai, Yan

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


241

Absorption Heat Pump Water Heater  

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

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

242

Absorption Heat Pump Water Heater  

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

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

243

Pump control system for windmills  

DOE Patents (OSTI)

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.

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

1983-01-01T23:59:59.000Z

244

Hybrid Geothermal Heat Pump Systems  

Science Conference Proceedings (OSTI)

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

2009-12-21T23:59:59.000Z

245

Verti Jack Pumping Unit evaluation  

Science Conference Proceedings (OSTI)

The Verti Jack Pumping Unit was tested primarily to establish the energy comsumption efficiency of the unit as compared with that of conventional pumping unit. Before the unit was field tested, extensive static testing was performed to determine the effect of the counterbalance system throughout the operational cycle. The field test included comparing the performance of the Verti Jack Unit and conventional pump jacks - a Bethlehem 16 and Cabot 25 pumping unit. The Verti Jack unit was operated at four different pumping conditions. The Verti Jack unit peformed satisfactorily during the testing. Only minor problems that could not be attributed to the design or operation of the unit were encountered. Changing the stroke length was difficult in the field, but such operational problems were expected in operating the first phototype and can be corrected on future models. During the higher pumping rate tests of the Verti Jack unit, the well ceased to deliver fluid quantities at rates adequate to the pumping rate. These data are shown in table 8. Therefore, evaluation data are based on theoretical pump performance and are presented in table 9. The data show that the Verti Jack is more efficient than the conventional units tested. The most direct comparison was the Verti Jack test at 36-inch stroke and 12 1/2 strokes per minute versus the Cabot unit at 37-inch stroke and 12 strokes per minute. In the comparison the Verti Jack operated about 24 percent more efficiently than the Cabot unit. Comparing the summation of all Verti Jack tests with that of all conventional unit tests, the Verti Jack operated about 15 percent more efficiently. Compared to the Cabot unit only, the Verti Jack was about 17 percent more energy efficient. 13 figs., 12 tabs.

Porter, R.; Spence, K.

1985-11-01T23:59:59.000Z

246

Optically pumped polarized ion sources  

SciTech Connect

Polarization transfer collisions between protons, atomic hydrogen, or deuterium and optically pumped alkali-metal vapour are implemented in the high current optically pumped polarized ion source (OPPIS) and the laser driven source (LDS) of nuclear polarized atoms for target applications. The OPPIS technique overcomes the limitations on intensity of the conventional atomic beam source technique and meets the requirements of the new generation of polarization experiments at multi-GeV accelerators and colliders. 17 refs., 3 figs.

Zelenski, A.N.

1995-12-31T23:59:59.000Z

247

Mechanical drive for blood pump  

DOE Patents (OSTI)

This patent relates to a highly efficient blood pump to be used as a replacement for a ventricle of the human heart to restore people disabled by heart disease. The mechanical drive of the present invention is designed to operate in conjunction with a thermoelectric converter power source. The mechanical drive system essentially converts the output of a rotary power into pulsatile motion so that the power demand from the thermoelectric converter remains essentially constant while the blood pump output is pulsed. (auth)

Bifano, N.J.; Pouchot, W.D.

1975-07-29T23:59:59.000Z

248

Greenhouse gas budgets of crop production current  

E-Print Network (OSTI)

Greenhouse gas budgets of crop production ­ current and likely future trends Helen C. Flynn and Pete Smith #12;Greenhouse gas budgets of crop production ­ current and likely future trends Helen C or boundaries. #12;3Greenhouse gas budgets of crop production ­ current and likely future trends About

Levi, Ran

249

Energy analysis of selected crops in Thailand  

SciTech Connect

Energy analyses were made for the production of rice, corn and sugarcane crops in Thailand. All on-farm production activities from land preparation to harvesting were included. Energy inputs and yields for all crops were low. The energy returns for all three crops vary from 8 to 9 kilocalories for every kilocalorie put in.

Singh, G.; de Los Reyes, A.A.

1983-12-01T23:59:59.000Z

250

Flow assurance and multiphase pumping  

E-Print Network (OSTI)

A robust understanding and planning of production enhancement and flow assurance is required as petroleum E&P activities are targeting deepwaters and long distances. Different flow assurance issues and their solutions are put together in this work. The use of multiphase pumps as a flow assurance solution is emphasized. Multiphase pumping aids flow assurance in different ways. However, the problem causing most concern is sand erosion. This work involved a detection-based sand monitoring method. Our objectives are to investigate the reliability of an acoustic sand detector and analyze the feasibility of gel injection as a method to mitigate sand erosion. Use of a sand detector coupled with twin-screw pumps is studied under varying flow conditions. The feasibility of gel injection to reduce slip and transport produced solids through twin-screw pump is investigated. A unique full-scale laboratory with multiphase pumps was utilized to carry out the experimental tests. The test results indicate that acoustic sand detection works in a narrow window around the calibration signature. An empirical correlation for predicting the twin-screw pump performance with viscous fluids was developed. It shows good agreement in the practical operational limits – 50% to 100% speed. The results indicate that viscous gel injection should be an effective erosion mitigation approach as it reduces slip, the principle cause of erosive wear. To correlate the performance of viscous fluid injection to hydroabrasive wear, further experimental investigation is needed.

Nikhar, Hemant G.

2006-12-01T23:59:59.000Z

251

Columbia Rural Electric Association - Irrigation Energy Efficiency Rebate  

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

Irrigation Energy Efficiency Irrigation Energy Efficiency Rebate Program Columbia Rural Electric Association - Irrigation Energy Efficiency Rebate Program < Back Eligibility Agricultural Savings Category Other Maximum Rebate 70% of cost Program Info Expiration Date 9/31/2013 State District of Columbia Program Type Utility Rebate Program Rebate Amount Nozzle: $1.50 - $4.00 Sprinkler: $1 - $4 Gasket: $2.75 Regulator: $5 Drain: $1 Hub: $14.50 Goose Neck Elbows: $1.65 Drop Tube: $3 Pivot: $175 Pipe Section: $10 Leveler: $0.75 Provider Columbia REA Columbia REA, through the Bonneville Power Administration, offers an irrigation energy efficiency program for its agricultural customers. Stationary systems are not eligible for this program due to the number of sprinklers per acre. Replacement sprinklers are eligible for retrofits

252

Modesto Irrigation District - New Home Energy Efficiency Rebate Program |  

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

Modesto Irrigation District - New Home Energy Efficiency Rebate Modesto Irrigation District - New Home Energy Efficiency Rebate Program Modesto Irrigation District - New Home Energy Efficiency Rebate Program < Back Eligibility Construction Multi-Family Residential Residential Savings Category Heating & Cooling Home Weatherization Construction Commercial Weatherization Commercial Heating & Cooling Design & Remodeling Program Info State California Program Type Utility Rebate Program Rebate Amount Single-Family Dwelling: $500 Multi-Family Dwelling: $250 Provider Energy Management Department 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 California Energy Star Qualified New Homes, listed on the program application. Each qualified new

253

Modesto Irrigation District - Photovoltaic Rebate Program | Department of  

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

Modesto Irrigation District - Photovoltaic Rebate Program Modesto Irrigation District - Photovoltaic Rebate Program Modesto Irrigation District - Photovoltaic Rebate Program < Back Eligibility Agricultural Commercial Local Government Nonprofit Residential State Government Savings Category Solar Buying & Making Electricity Maximum Rebate 50% of total project costs. Program Info State California Program Type Utility Rebate Program Rebate Amount Systems >1 kW to 30 kW: $1.00/W AC. Systems >30 kW to 1 MW: performance-based incentive of $0.10/kWh for 5 years. Provider PV Program Coordinator Modesto Irrigation District offers a photovoltaic rebate program for all of their electric customers. The peak output capacity of a system must be 1 kW or greater to participate. Systems up to 30 kilowatts (kW) in capacity can

254

Solar technology applications: a survey of solar powered irrigation systems  

DOE Green Energy (OSTI)

Published information on solar powered irrigation systems is presented. Thermal solar systems, thermoelectric solar systems, and photovoltaic solar systems are included. A bibliography and survey of on-going work is presented. (WHK)

Newkirk, H.W.

1978-04-17T23:59:59.000Z

255

Energy savings potential from energy-conserving irrigation systems  

SciTech Connect

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.

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

1982-11-01T23:59:59.000Z

256

Irrigation Districts: Establishment of Electric Light and Power Systems:  

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

Irrigation Districts: Establishment of Electric Light and Power Irrigation Districts: Establishment of Electric Light and Power Systems: Powers (Nebraska) Irrigation Districts: Establishment of Electric Light and Power Systems: Powers (Nebraska) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Savings Category Water Buying & Making Electricity Home Weatherization Program Info State Nebraska Program Type Siting and Permitting Provider Natural Resources Irrigation districts, created in section 46-1xx, are encouraged to

257

Solar-powered irrigation systems study: technical summary report. Volume II. Agricultural energy and fuel price projections for Arizona, California, Kansas, Nebraska, New Mexico, and Texas  

SciTech Connect

This study is part of a larger research effort to project U.S. energy demand and energy prices by state from 1985 to 2015; these projections will be used to assess the potential penetration into the U.S. energy economy by specific solar systems. The detailed agricultural energy price forecasts for the 1985-2015 period used by The Aerospace Corporation to assess the market potential of solar-powered irrigation system is presented. Energy price forecasts in constant 1977 dollars are presented by aggregated county regions in the six states for four major sources of energy used in pumping of irrigation water: liquid petroleum gas (LPG), diesel fuel, natural gas, and electricity. (WHK)

1978-05-31T23:59:59.000Z

258

Absorption Heat Pump Basics | Department of Energy  

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

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

259

Heat Pump Systems | Department of Energy  

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

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

260

Absorption Heat Pumps | Department of Energy  

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

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

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


261

Ground Source Heat Pumps | Open Energy Information  

Open Energy Info (EERE)

Ground Source Heat Pumps Ground Source Heat Pumps (Redirected from Geothermal Heat Pumps) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Ground Source Heat Pumps Geothermal Technologies There are many types of Geothermal Technologies that take advantage of the earth's heat: Hydrothermal Systems Enhanced Geothermal Systems (EGS) Sedimentary Geothermal Systems Co-Produced Geothermal Systems Geothermal Direct Use Ground Source Heat Pumps GSHP Links Related documents and websites An Information Survival Kit for the Prospective Geothemral Heat Pump Owner List of Heat Pumps Incentives List of Ground Source Heat Pumps Incentives Policy Makers' Guidebook for Geothermal Heating and Cooling Various ways to configure a geothermal heat pump system. (Source: The Geo-Heat Center's Survival Kit for the Prospective Geothemral Heat Pump

262

Tips: Heat Pumps | Department of Energy  

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

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

263

Absorption Heat Pumps | Department of Energy  

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

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

264

Pump Systems Matter Mission and Vision:  

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

Pump Systems Matter Mission and Vision: Pump Systems Matter Mission and Vision: Pump Systems Matter(tm) (PSM) places a primary focus on pump systems education and outreach and addresses energy savings and total cost of pump ownership. Vision: Pump Systems Matter initiative assists North American pump users gain a more competitive business advantage through strategic, broad-based energy management and pump system performance optimization. Mission: To provide the marketplace with tools and collaborative opportunities to integrate pump system performance optimization and efficient energy management practices into normal business operations. Essential Elements: * Build awareness of the benefits of systems optimization and pump system life cycle cost at the management, production and technical levels of companies throughout the supply chain.

265

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

Science Conference Proceedings (OSTI)

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.

Hunt, A.; Easley, S.

2012-05-01T23:59:59.000Z

266

Optically pumped isotopic ammonia laser system  

DOE Patents (OSTI)

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

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

1982-01-01T23:59:59.000Z

267

Where Does the Irrigation Water Go? An Estimate of the Contribution of Irrigation to Precipitation Using MERRA  

Science Conference Proceedings (OSTI)

Irrigation is an important human activity that may impact local and regional climate, but current climate model simulations and data assimilation systems generally do not explicitly include it. The European Centre for Medium-Range Weather ...

Jiangfeng Wei; Paul A. Dirmeyer; Dominik Wisser; Michael G. Bosilovich; David M. Mocko

2013-02-01T23:59:59.000Z

268

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

DOE Green Energy (OSTI)

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.

Roberts, B.

2011-07-01T23:59:59.000Z

269

Microelectromechanical pump utilizing porous silicon  

DOE Patents (OSTI)

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

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

2011-07-19T23:59:59.000Z

270

heat pump | OpenEI  

Open Energy Info (EERE)

heat pump heat pump Dataset Summary Description View 2010 energy efficiency data from AeroSys Inc, Coaire, Cold Point, First Operations, LG Electronics, Nordyne, and Quietside manufacturers. Data includes cooling capacity, cooling performance, heating capacity, and heating performance. Spreadsheet was created by combining the tables in pdf files that are included in the zip file. Source Energy Applicance Data - United States Federal Trade Commission, www.ftc.gov Date Released Unknown Date Updated Unknown Keywords air conditioner central air conditioner efficiency efficient energy heat pump Data application/vnd.ms-excel icon 2010_CentralAC_All.xls (xls, 82.4 KiB) application/zip icon 2010CentralAirConditioner.zip (zip, 398.2 KiB) Quality Metrics Level of Review Some Review

271

pumped storage | OpenEI  

Open Energy Info (EERE)

pumped storage pumped storage Dataset Summary Description These two datasets include energy statistics for the European Union (EU). The statistics are available from the European Commission. The data includes detailed information about: production, net imports, gross inland consumption, and electricity generation for the EU as a whole, as well as the individual member countries, for the period between 1990 and 2007. Source European Commission Date Released Unknown Date Updated Unknown Keywords annual energy consumption biomass coal crude oil Electricity Generation EU gas geothermal Hydro pumped storage PV renewable energy generating capacity wind Data application/vnd.ms-excel icon EU Energy Figures 2010 (Excel file, multiple tabs) (xls, 2 MiB) application/vnd.ms-excel icon EU Electricity Generation from Renewables (xls, 190.5 KiB)

272

Alternative Fuels Data Center: Blender Pump Dispensers  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Blender Pump Blender Pump Dispensers to someone by E-mail Share Alternative Fuels Data Center: Blender Pump Dispensers on Facebook Tweet about Alternative Fuels Data Center: Blender Pump Dispensers on Twitter Bookmark Alternative Fuels Data Center: Blender Pump Dispensers on Google Bookmark Alternative Fuels Data Center: Blender Pump Dispensers on Delicious Rank Alternative Fuels Data Center: Blender Pump Dispensers on Digg Find More places to share Alternative Fuels Data Center: Blender Pump Dispensers on AddThis.com... Blender Pump Dispensers Updated April 2, 2012 Federal and local initiatives to increase the use of ethanol in transportation have resulted in an increase of new ideas and applications for flexible fuel vehicles (FFVs) and E85, a high-level gasoline blend

273

Ground Source Heat Pumps | Open Energy Information  

Open Energy Info (EERE)

Ground Source Heat Pumps Ground Source Heat Pumps Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Ground Source Heat Pumps Geothermal Technologies There are many types of Geothermal Technologies that take advantage of the earth's heat: Hydrothermal Systems Enhanced Geothermal Systems (EGS) Sedimentary Geothermal Systems Co-Produced Geothermal Systems Geothermal Direct Use Ground Source Heat Pumps GSHP Links Related documents and websites An Information Survival Kit for the Prospective Geothemral Heat Pump Owner List of Heat Pumps Incentives List of Ground Source Heat Pumps Incentives Policy Makers' Guidebook for Geothermal Heating and Cooling Various ways to configure a geothermal heat pump system. (Source: The Geo-Heat Center's Survival Kit for the Prospective Geothemral Heat Pump

274

Acoustical heat-pumping engine  

DOE Patents (OSTI)

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

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

1981-08-14T23:59:59.000Z

275

Jet pump feeds corrosion inhibitor in Russian waterflood  

SciTech Connect

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

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

1997-01-27T23:59:59.000Z

276

Peristaltic pumps work in nano scales  

E-Print Network (OSTI)

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.

Farnoush Farahpour; Mohammad Reza Ejtehadi

2013-08-05T23:59:59.000Z

277

Potential bias of model projected greenhouse warming in irrigated regions  

SciTech Connect

Atmospheric general circulation models (GCMs) used to project climate responses to increased CO{sub 2} generally omit irrigation of agricultural land. Using the NCAR CAM3 GCM coupled to a slab-ocean model, we find that inclusion of an extreme irrigation scenario has a small effect on the simulated temperature and precipitation response to doubled CO{sub 2} in most regions, but reduced warming by as much as 1 C in some agricultural regions, such as Europe and India. This interaction between CO{sub 2} and irrigation occurs in cases where agriculture is a major fraction of the land surface and where, in the absence of irrigation, soil moisture declines are projected to provide a positive feedback to temperature change. The reduction of warming is less than 25% of the temperature increase modeled for doubled CO{sub 2} in most regions; thus greenhouse warming will still be dominant. However, the results indicate that land use interactions may be an important component of climate change uncertainty in some agricultural regions. While irrigated lands comprise only {approx}2% of the land surface, they contribute over 40% of global food production. Climate changes in these regions are therefore particularly important to society despite their relatively small contribution to average global climate.

Lobell, D; Bala, G; Bonfils, C; Duffy, P

2006-04-27T23:59:59.000Z

278

Pump for molten metal or other fluid  

SciTech Connect

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

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

1994-01-01T23:59:59.000Z

279

Pump Systems Matter Mission and Vision | Department of Energy  

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

issionofPumpSystemsMatter.pdf More Documents & Publications Overview of Pump Systems Matter Hydraulic Institute Member Benefits Course Overview Pump Systems Matter Optimization...

280

Mohave Electric Cooperative - Heat Pump Rebate Program | Department...  

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

Heat Pump Rebate Program Mohave Electric Cooperative - Heat Pump Rebate Program Eligibility Residential Savings For Heating & Cooling Commercial Heating & Cooling Heat Pumps...

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


281

Electrokinetically pumped high pressure sprays  

DOE Patents (OSTI)

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

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

2005-11-01T23:59:59.000Z

282

Industrial Heat Pump Case Study  

E-Print Network (OSTI)

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

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

1985-05-01T23:59:59.000Z

283

Electrokinetically pumped high pressure sprays  

DOE Patents (OSTI)

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

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

2002-01-01T23:59:59.000Z

284

Geothermal heat pumps in Pierre  

SciTech Connect

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

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

1997-12-01T23:59:59.000Z

285

Cassava, a potential biofuel crop in China  

E-Print Network (OSTI)

18-673389 Keywords: cassava; bioethanol; biofuel; metabolicRecently, cassava-derived bioethanol production has beenbenefits compared to other bioethanol- producing crops in

Jansson, C.

2010-01-01T23:59:59.000Z

286

Cassava, a potential biofuel crop in China  

E-Print Network (OSTI)

Cassava, a potential biofuel crop in China Christer Janssoncassava; bioethanol; biofuel; metabolic engineering; Chinathe potentials of cassava in the biofuel sector and point to

Jansson, C.

2010-01-01T23:59:59.000Z

287

CropEnergies | Open Energy Information  

Open Energy Info (EERE)

search Name CropEnergies Place Mannheim, Saxony-Anhalt, Germany Zip 68165 Sector Biofuels Product A German biofuels company focused on bioethanol production for use as...

288

Seasonality and Its Effects on Crop Markets  

E-Print Network (OSTI)

Understanding crop seasonality can improve a producer's marketing skills and options. The causes of seasonality and its effects on price changes are discussed.

Tierney Jr., William I.; Waller, Mark L.; Amosson, Stephen H.

1999-07-12T23:59:59.000Z

289

Short rotation Wood Crops Program  

DOE Green Energy (OSTI)

This report synthesizes the technical progress of research projects in the Short Rotation Woody Crops Program for the year ending September 30, 1989. The primary goal of this research program, sponsored by the US Department of Energy's Biofuels and Municipal Waste Technology Division, is the development of a viable technology for producing renewable feedstocks for conversion to biofuels. One of the more significant accomplishments was the documentation that short-rotation woody crops total delivered costs could be $40/Mg or less under optimistic but attainable conditions. By taking advantage of federal subsidies such as those offered under the Conservation Reserve Program, wood energy feedstock costs could be lower. Genetic improvement studies are broadening species performance within geographic regions and under less-than-optimum site conditions. Advances in physiological research are identifying key characteristics of species productivity and response to nutrient applications. Recent developments utilizing biotechnology have achieved success in cell and tissue culture, somaclonal variation, and gene-insertion studies. Productivity gains have been realized with advanced cultural studies of spacing, coppice, and mixed-species trials. 8 figs., 20 tabs.

Wright, L.L.; Ehrenshaft, A.R.

1990-08-01T23:59:59.000Z

290

Heat Pump Water Heaters | Department of Energy  

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

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

291

Geothermal Heat Pumps | Department of Energy  

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

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

292

Heat Pump Water Heaters | Department of Energy  

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

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

293

Geothermal Heat Pump Basics | Department of Energy  

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

and a heat exchanger-a system of pipes buried in shallow ground. In the winter, the heat pump removes heat from the heat exchanger and pumps it into the indoor air delivery...

294

Compact and highly efficient laser pump cavity  

SciTech Connect

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.

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

1999-01-01T23:59:59.000Z

295

Compact and highly efficient laser pump cavity  

SciTech Connect

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.

Chang, J.J.; Bass, I.L.; Zapata, L.E.

1999-11-02T23:59:59.000Z

296

Definition: Heat pump | Open Energy Information  

Open Energy Info (EERE)

pump pump Jump to: navigation, search Dictionary.png Heat pump Heating and/or cooling equipment that, during the heating season, draws heat into a building from outside and, during the cooling season, ejects heat from the building to the outside[1] View on Wikipedia Wikipedia Definition A heat pump is a device that transfers heat energy from a heat source to a heat sink against a temperature gradient. Heat pumps are designed to move thermal energy opposite the direction of spontaneous heat flow. A heat pump uses some amount of external high-grade energy to accomplish the desired transfer of thermal energy from heat source to heat sink. While compressor-driven air conditioners and freezers are familiar examples of heat pumps, the term "heat pump" is more general and applies to

297

Modesto Irrigation District - Commercial New Construction Rebate Program |  

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

Modesto Irrigation District - Commercial New Construction Rebate Modesto Irrigation District - Commercial New Construction Rebate Program Modesto Irrigation District - Commercial New Construction Rebate Program < Back Eligibility Agricultural Commercial Industrial Savings Category Heating & Cooling Home Weatherization Construction Commercial Weatherization Commercial Heating & Cooling Design & Remodeling Other Appliances & Electronics Commercial Lighting Lighting Maximum Rebate 50% of the incremental cost of the project(s) included in the application. The maximum annual payment cap is determined per account, by the applicable MID electric rate schedule: $15,000 (GS-1); $25,000 (P-3); $50,000 (GS-2); $125,000 (GS-TOU); $250,000 (GS-3); $500,000 (IC-25). Program Info Expiration Date 12/15/2013 State California Program Type

298

Idaho Power - Irrigation Efficiency Rewards Rebate Program | Department of  

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

Irrigation Efficiency Rewards Rebate Program Irrigation Efficiency Rewards Rebate Program Idaho Power - Irrigation Efficiency Rewards Rebate Program < Back Eligibility Agricultural Commercial Savings Category Other Maximum Rebate Custom Incentive for Existing System Replacement: 75% of the total project cost Custom Incentive for a New System: 10% of the total project cost Sprinkler Equipment Incentives: 50% of equipment cost Program Info Funding Source Conservation Program Funding Charge collected by Idaho Power as approved by the state Public Utilities Commission. State Oregon Program Type Utility Rebate Program Rebate Amount Custom Incentive for Existing System Replacement: $0.25/annual kWh saved or $450/kW Custom Incentive for a New System: $0.25/annual kWh saved New Flow-Control Nozzles: $1.50/unit

299

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

Science Conference Proceedings (OSTI)

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

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

1995-01-01T23:59:59.000Z

300

Environmental enhancement using short-rotation woody crops and perennial grasses as alternative agricultural crops  

DOE Green Energy (OSTI)

Short-rotation woody crops and perennial grasses are grown as biomass feedstocks for energy and fiber. When replacing traditional row crops on similar lands, these alternative crops can provide multiple environmental benefits in addition to enhancing rural economies and providing valuable feedstock resources. The Department of Energy is supporting research to address how these crops can provide environmental benefits to soil, water and native wildlife species in addition to providing bioenergy feedstocks. Research is underway to address the potential for biomass crops to provide soil conservation and water quality improvements in crop settings. Replacement of traditional erosive row crops with biomass crops on marginal lands and establishment of biomass plantations as filter strips adjacent to streams and wetlands are being studied. The habitat value of different biomass crops for selected wildlife species is also under study. To date, these studies have shown that in comparison with row crops biomass plantings of both grass and tree crops increased biodiversity of birds; however, the habitat value of tree plantations is not equivalent to natural forests. The effects on native wildlife of establishing multiple plantations across a landscape are being studied. Combining findings on wildlife use of individual plantations with information on the cumulative effects of multiple plantations on wildlife populations can provide guidance for establishing and managing biomass crops to enhance biodiversity while providing biomass feedstocks. Data from site-specific environmental studies can provide input for evaluation of the probable effects of large-scale plantings at both landscape and regional levels of resolution.

Tolbert, V.R. [Oak Ridge National Lab., TN (United States); Schiller, A. [Oak Ridge Inst. for Science and Education, TN (United States)

1995-12-31T23:59:59.000Z

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


301

Modeling Irrigated Area to Increase Water, Energy, and Food Security in Semiarid India  

Science Conference Proceedings (OSTI)

Because of declining public investments in irrigation projects in India, the growth of irrigated agricultural production has increasingly become reliant on unsustainable allocation of groundwater. As a result, groundwater resources are ...

Tobias Siegfried; Stefan Sobolowski; Pradeep Raj; Ram Fishman; Victor Vasquez; Kapil Narula; Upmanu Lall; Vijay Modi

2010-10-01T23:59:59.000Z

302

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

E-Print Network (OSTI)

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

Paulsson, Johan

303

Selection criteria for oil?free vacuum pumps  

Science Conference Proceedings (OSTI)

Some high?vacuum pumps without oil in the swept pumping volume are now available for the evacuation and process pumping of vacuum systems. These pumps are from different principles

Pierre Duval

1989-01-01T23:59:59.000Z

304

Growing Energy Biomass crops as a  

E-Print Network (OSTI)

to provide our heat, electricity and liquid transport fuels. It is widely agreed that wind, wave, tidal carbon emissions set by the Kyoto Protocol are to be met. Biomass from crop plants can make an important of research activities aimed at the sustainable production of biomass from energy crops for heat and power

Rambaut, Andrew

305

Geothermal Heat Pump Benchmarking Report  

SciTech Connect

A benchmarking study was conducted on behalf of the Department of Energy to determine the critical factors in successful utility geothermal heat pump programs. A Successful program is one that has achieved significant market penetration. Successfully marketing geothermal heat pumps has presented some major challenges to the utility industry. However, select utilities have developed programs that generate significant GHP sales. This benchmarking study concludes that there are three factors critical to the success of utility GHP marking programs: (1) Top management marketing commitment; (2) An understanding of the fundamentals of marketing and business development; and (3) An aggressive competitive posture. To generate significant GHP sales, competitive market forces must by used. However, because utilities have functioned only in a regulated arena, these companies and their leaders are unschooled in competitive business practices. Therefore, a lack of experience coupled with an intrinsically non-competitive culture yields an industry environment that impedes the generation of significant GHP sales in many, but not all, utilities.

1997-01-17T23:59:59.000Z

306

Empirical evidence for a recent slowdown in irrigation-induced cooling  

SciTech Connect

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

Bonfils, C; Lobell, D

2007-01-19T23:59:59.000Z

307

Evaluations of emitter clogging in drip irrigation by two-phase flow simulations and laboratory experiments  

Science Conference Proceedings (OSTI)

Emitter clogging will affect greatly the irrigation efficiency and the running cost of a drip irrigation system. If there is an effective method to predict the emitter clogging, the lost will be reduced to a minimum. A solid-liquid two-phase turbulent ... Keywords: Clogging, Computational fluid dynamics, Drip emitters, Drip irrigation, Two-phase flow

Wei Qingsong; Lu Gang; Liu Jie; Shi Yusheng; Dong Wenchu; Huang Shuhuai

2008-10-01T23:59:59.000Z

308

Liquid metal pump for nuclear reactors  

DOE Patents (OSTI)

A pump for use in pumping high temperature liquids at high pressures, particularly liquid metals used to cool nuclear reactors is described. It is of the type in which the rotor is submerged in a sump but is fed by an inlet duct which bypasses the sump. A chamber, kept full of fluid, surrounds the pump casing into which fluid is bled from the pump discharge and from which fluid is fed to the rotor bearings and hence to the sump. This equalizes pressure inside and outside the pump casing and reduces or eliminates the thermal shock to the bearings and sump tank.

Allen, H.G.; Maloney, J.R.

1975-10-01T23:59:59.000Z

309

Short Rotation Crops in the United States  

DOE Green Energy (OSTI)

responders anticipated that energy will comprise 25% or less of the utilization of single-stem short-rotation woody crops between now and 2010. The only exception was a response from California where a substantial biomass energy market does currently exist. Willows (Salix species) are only being developed for energy and only in one part of the United States at present. Responses from herbaceous crop researchers suggested frustration that markets (including biomass energy markets) do not currently exist for the crop, and it was the perception of many that federal incentives will be needed to create such markets. In all crops, responses indicate that a wide variety of research and development activities are needed to enhance the yields and profitability of the crops. Ongoing research activities funded by the U.S. Department of Energy?s Bioenergy Feedstock Development Program are described in an appendix to the paper.

Wright, L.L.

1998-06-04T23:59:59.000Z

310

Self-pumping impurity control  

DOE Patents (OSTI)

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.

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

1983-12-21T23:59:59.000Z

311

Submersible canned motor transfer pump  

DOE Patents (OSTI)

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

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

1997-01-01T23:59:59.000Z

312

Rust disease continues to threaten California garlic crop  

E-Print Network (OSTI)

threaten California garlic crop Steven T. Koike u Richard F.severely damaged the garlic crop in Califor- nia. Thestudy, it infected allium crops such as gar- lic, onion and

Koike, Steven T.; Smith, Richard; Davis, R. Michael; Nunez, J. Joe; Voss, Ron E.

2001-01-01T23:59:59.000Z

313

New crop coefficients developed for high-yield processing tomatoes  

E-Print Network (OSTI)

after planting Fig. 2. Daily crop coefficients with daysFor all years, seasonal crop ETc ranged from 20.8 to 29.64. Relationship between average crop coefficient and canopy

Hanson, Blaine R.; May, Donald M.

2006-01-01T23:59:59.000Z

314

When crop transgenes wander in California, should we worry?  

E-Print Network (OSTI)

modi?ed herbicide- tolerant crops. J Applied Ecol 40:2–16.No 421. Gressel J. 2005. Crop Ferality and Volunteerism.Can genetically engineered crops become weeds? Biotechnology

Ellstrand, Norman C.

2006-01-01T23:59:59.000Z

315

Weather-based yield forecasts developed for 12 California crops  

E-Print Network (OSTI)

precipitation on California crop yields. Climatic Change. InG. 1999. Understanding crop statis- tics. www.usda.gov/nass/developed for 12 California crops by David B. Lobell,

Lobell, David; Cahill, Kimberly Nicholas; Field, Christopher

2006-01-01T23:59:59.000Z

316

Pharmaceutical crops have a mixed outlook in California  

E-Print Network (OSTI)

8:18–25. Ellstrand NC. 2006. When crop transgenes wander inM, Van Acker R. 2005. Can crop transgenes be kept on aEconomics of Pharmaceuti- cal Crops: Potential Bene?ts and

Marvier, Michelle

2007-01-01T23:59:59.000Z

317

Buffers between grazing sheep and leafy crops augment food safety  

E-Print Network (OSTI)

sheep and the edge of a food crop was adequate to preventgrazing sheep and leafy crops augment food safety Thedomestic animals and the crop edge is adequate to minimize

Hoar, Bruce R; Atwill, Edward R; Carlton, Lesa; Celis, Jorge; Carabez, Jennifer; Nguyen, Tran

2013-01-01T23:59:59.000Z

318

An Approach to Crop-Hail Insurance Rate Revision  

Science Conference Proceedings (OSTI)

Hailstorms are meteorological events that have a considerably adverse impact on crop production. Variation of these events in time and space, in turn, influence crop-hail insurance rate structure. Crop-hail insurance companies normally review ...

J. C. Neill

1981-12-01T23:59:59.000Z

319

Water use of tall and dwarf crop plants  

E-Print Network (OSTI)

height in a spring wheat. Crop Science 34(No. 6); \\ i i *O F T A L L AND D W A R F CROP PLANTS By J . Giles Wainesbetween water application, crop yields, and management

Waines, J. Giles; Ehdaie, Bahman

1994-01-01T23:59:59.000Z

320

Interdisciplinary Pest Management Potentials of Cover Cropping Systems  

E-Print Network (OSTI)

and D. R. Linden. 2004. Crop and soil productivity responseresistance in cowpea. Crop Science 40:611-618. Enache A. J.McGiffen. 2000. Cowpea cover crop mulch for weed control in

Bachie, Oli Gurmu

2011-01-01T23:59:59.000Z

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


321

Soil carbon, after 3 years, under short-rotation woody crops grown under varying nutrient and water availability.  

SciTech Connect

Abstract Soil carbon contents were measured on a short-rotation woody crop study located on the US Department of Energy’s Savannah River Site outside Aiken, SC. This study included fertilization and irrigation treatments on five tree genotypes (sweetgum, loblolly pine, sycamore and two eastern cottonwood clones). Prior to study installation, the previous pine stand was harvested and the remaining slash and stumps were pulverized and incorporated 30 cm into the soil. One year after harvest soil carbon levels were consistent with preharvest levels but dropped in the third year below pre-harvest levels. Tillage increased soil carbon contents, after three years, as compared with adjacent plots that were not part of the study but where harvested, but not tilled, at the same time. When the soil response to the individual treatments for each genotype was examined, one cottonwood clone (ST66), when irrigated and fertilized, had higher total soil carbon and mineral associated carbon in the upper 30 cm compared with the other tree genotypes. This suggests that root development in ST66 may have been stimulated by the irrigation plus fertilization treatment.

Sanchez, Felipe, G.; Coleman, Mark; Garten, Charles, T., Jr.; Luxmoore, Robert, J.; Stanturf, John, A.; Wullschleger, Stan, D.

2007-07-01T23:59:59.000Z

322

Soil carbon after three years under short rotation woody crops grown under varying nutrient and water availability  

SciTech Connect

Soil carbon contents were measured on a short-rotation woody crop study located on the US Department of Energy's Savannah River Site outside Aiken, SC. This study included fertilization and irrigation treatments on five tree genotypes (sweetgum, loblolly pine, sycamore and two eastern cottonwood clones). Prior to study installation, the previous pine stand was harvested and the remaining slash and stumps were pulverized and incorporated 30 cm into the soil. One year after harvest soil carbon levels were consistent with pre-harvest levels but dropped in the third year below pre-harvest levels. Tillage increased soil carbon contents, after three years, as compared with adjacent plots that were not part of the study but where harvested, but not tilled, at the same time. When the soil response to the individual treatments for each genotype was examined, one cottonwood clone (ST66), when irrigated and fertilized, had higher total soil carbon and mineral associated carbon in the upper 30 cm compared with the other tree genotypes. This suggests that root development in ST66 may have been stimulated by the irrigation plus fertilization treatment.

Sanchez, Felipe G. [USDA Forest Service; Coleman, Mark [USDA Forest Service; Garten Jr, Charles T [ORNL; Luxmoore, Robert J [ORNL; Stanturf, J. A. [USDA Forest Service; Trettin, Carl [USDA Forest Service; Wullschleger, Stan D [ORNL

2007-01-01T23:59:59.000Z

323

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

E-Print Network (OSTI)

groundwater levels, land subsidence, soil salinity, and cropeffects such as land subsidence. Under the section “yields, and on land subsidence. A second group of measures

Hopmans, Jan W; Maurer, Edwin P

2008-01-01T23:59:59.000Z

324

Short Rotation Crops in the United States  

SciTech Connect

The report is based primarily on the results of survey questions sent to approximately 60 woody and 20 herbaceous crop researchers in the United States and on information from the U.S. Department of Energy?s Bioenergy Feedstock Development Program. Responses were received from 13 individuals involved in woody crops research or industrial commercialization (with 5 of the responses coming from industry). Responses were received from 11 individuals involved in herbaceous crop research. Opinions on market incentives, technical and non-technical barriers, and highest priority research and development areas are summarized in the text. Details on research activities of the survey responders are provided as appendices to the paper. Woody crops grown as single-stem systems (primarily Populus and Eucalyptus species) are perceived to have strong pulp fiber and oriented strand board markets, and the survey responders anticipated that energy will comprise 25% or less of the utilization of single-stem short-rotation woody crops between now and 2010. The only exception was a response from California where a substantial biomass energy market does currently exist. Willows (Salix species) are only being developed for energy and only in one part of the United States at present. Responses from herbaceous crop researchers suggested frustration that markets (including biomass energy markets) do not currently exist for the crop, and it was the perception of many that federal incentives will be needed to create such markets. In all crops, responses indicate that a wide variety of research and development activities are needed to enhance the yields and profitability of the crops. Ongoing research activities funded by the U.S. Department of Energy?s Bioenergy Feedstock Development Program are described in an appendix to the paper.

Wright, L.L.

1998-06-04T23:59:59.000Z

325

Bioenergy: What`s in it for the grower? The cost of producing dedicated energy crops. Comparisons with conventional crops  

DOE Green Energy (OSTI)

Dedicated energy crops must be at least as profitable as conventional crops that could be grown on a given site before farmers will produce energy crops on that site. This report concentrates on the cost of producing dedicated energy crops and compare those costs to the profitability of conventional crops. This comparison allows one to estimate a breakeven price, that is, a price for which the profitability of dedicated energy crops is equivalent to the profitability of conventional crops. Switchgrass and hybrid poplar have been chosen as representative herbaceous and woody crop species for the estimation.

Walsh, M.

1994-12-31T23:59:59.000Z

326

Submersible canned motor transfer pump  

DOE Patents (OSTI)

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.

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

1997-08-19T23:59:59.000Z

327

Absorption-heat-pump system  

DOE Patents (OSTI)

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

Grossman, G.; Perez-Blanco, H.

1983-06-16T23:59:59.000Z

328

PUMP FOR GASEOUS WORKING FLUIDS  

DOE Patents (OSTI)

A gas pump having a substantially constant rate of flow and a relatively efficient punnping action is described. A number of flexible plates disposed longitudinally in and in contact with a duct are caused to oscillate transversly so as to produce wave-llke deformations of the plates. These deformations are mechanically produced by pushrods and an eccentric gearing arrangement, and are so synchronized that the waves travel from the inlet to the outlet of the duct, and, in so doing, move the gas by positive displacement.

Lipscomb, R.

1948-12-14T23:59:59.000Z

329

Water and energy conservation through efficient irrigation management. Project completion report, January 1, 1975-December 1976  

SciTech Connect

An evaluation was made of corn (Zea mays L.) and grain sorghum (Sorghum bicolor (L) Moench) yield and water use efficiency as influenced by irrigation timing. The study was located at Tribune (mean annual rainfall of 17.0 inches) and Manhattan, (mean annual rainfall of 33.5 inches) Kansas. Treatments consisted of no in-season irrigation, a single in-season irrigation at one of three different growth stages, and irrigating at each of the three selected growth stages. Selected growth stages in corn were pre-tassel, silk emergence, and blister; in grain sorghum they were boot, half-bloom, and soft-dough. Each irrigation was 4 inches at Manhattan and 6 inches at Tribune. All Tribune plots received a pre-plant irrigation in April of each year. Water was applied to basin plots using gated pipe. With no in-season irrigation, the 3-year mean grain sorghum yields were greater than corn yields at both Manhattan and Tribune. The largest 3-year mean yield for corn receiving a single in-season irrigation was obtained with the irrigation during silk emergence at both Manhattan and Tribune. Grain sorghum yields from the single in-season irrigation treatments were similar and presented no single time that tended to be superior during the three study years. Corn responded well to the three in-season irrigations. The grain sorghum yield increase for plots receiving three in-season irrigations as opposed to those receiving only one in-season irrigation is insufficient to justify the two additional irrigations.

Stone, L.R.

1977-08-01T23:59:59.000Z

330

NREL: Learning - Geothermal Heat Pump Basics  

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

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

331

Geothermal Heat Pump Basics | Department of Energy  

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

Heat Pump Basics Heat Pump Basics Geothermal Heat Pump Basics August 19, 2013 - 11:12am Addthis Text Version 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. Depending on the latitude, ground temperatures range from 45°F (7°C) to 75°F (21°C). So, like a cave's, the ground's temperature is warmer than the air above it during winter and cooler than the air above it in summer. Geothermal heat pumps take advantage of this by exchanging heat with the earth through a ground heat exchanger. Geothermal heat pumps are able to heat, cool, and, if so equipped, supply

332

Geothermal Heat Pumps | Department of Energy  

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

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

333

COMPARISON OF PICKER AND STRIPPER HARVESTERS ON IRRIGATED COTTON ON THE HIGH PLAINS OF TEXAS  

E-Print Network (OSTI)

Over a fourth of the cotton produced in the US since 2002 has been produced in Texas, with most coming from the High Plains. In recent years, Texas has accounted for almost half of all US cotton production (USDA-NASS, 2008b). Most cotton on the High Plains is of more storm-proof varieties that have traditionally been harvested using stripper harvesters. However, improvements in irrigation technology and shifting markets for US cotton have increased interest in picker harvesters in the region. A holistic comparison of picker and stripper harvesters in irrigated cotton on the High Plains of Texas was conducted focusing on differences in system efficiencies, the costs of ginning, fiber and yarn quality, and potential economic returns under comparable crop yields and conditions. Harvester performance was evaluated based on harvest efficiency, time-inmotion, and fuel consumption. Stripper harvesters left less cotton in the field, but most of the cotton left by the picker was of low quality. While the time spent in each operation of harvest was highly dependent on the operator and support equipment available, in general, picker harvesters were able to harvest a unit area of high-yielding cotton more quickly than stripper harvesters. The cost of ginning picked and stripped cotton was evaluated considering current fee schedules from gins on the High Plains. On average, it cost a producer $4.76 more per bale to gin stripped-and-field-cleaned cotton than picked cotton. Fiber quality parameters were compared between harvest treatments based on results from High Volume Instrument (HVI) and Advanced Fiber Information System (AFIS) tests. Samples were ring-spun into carded and carded-and-combed yarns. Differences in fiber quality between harvest treatments were more pronounced when growing conditions were less favorable. Few differences were detected in carded yarn quality between harvest treatments, while more pronounced differences favoring picked cotton were seen in carded-and-combed yarns. A cost-benefit analysis was conducted to determine the production scenarios in which picker and stripper harvesters were most appropriate. Results indicate that, if a producer has sufficient yields coupled with sufficient area to harvest per machine, picker harvesting is a more profitable alternative to producers of on the High Plains.

Faulkner, William B.

2008-08-01T23:59:59.000Z

334

Bioeconomy Crop Initiative (Prince Edward Island)  

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

The Bioeconomy Crop Initiative is being offered by the P.E.I. Department of Agriculture through the Agricultural Flexibility Fund, a cost-sharing agreement between the Government of Canada and the...

335

Cassava, a potential biofuel crop in China  

E-Print Network (OSTI)

as a biomass for biofuel production and some of its economiceconomic viability of biofuel production is the efficiencybiofuel; metabolic engineering; China Abstract Cassava is ranking as fifth among crops in global starch production.

Jansson, C.

2010-01-01T23:59:59.000Z

336

Optimizing Crop Insurance under Climate Variability  

Science Conference Proceedings (OSTI)

This paper studies the selection of optimal crop insurance under climate variability and fluctuating market prices. A model was designed to minimize farmers’ expected losses (including insurance costs) while using the conditional-value-at-risk ...

Juan Liu; Chunhua Men; Victor E. Cabrera; Stan Uryasev; Clyde W. Fraisse

2008-10-01T23:59:59.000Z

337

Reciprocating Pump Systems for Space Propulsion  

DOE Green Energy (OSTI)

Small propellant pumps can reduce rocket hardware mass, while increasing chamber pressure to improve specific impulse. The maneuvering requirements for planetary ascent require an emphasis on mass, while those of orbiting spacecraft indicate that I{sub SP} should be prioritized during pump system development. Experimental efforts include initial testing with prototype lightweight components while raising pump efficiency to improve system I{sub SP}.

Whitehead, J C

2004-06-10T23:59:59.000Z

338

Microsoft Word - PumpProbe  

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

Pump/Probe Pump/Probe Resources Available - BE Current Mid 2014 Mid 2016 Beamline X-ray Source Total Total Total NSLS-I 0.25 0.15 0 U4B Bend 0.05 0 0 U4IR Bend 0.2 0.15 0 APS 4.75 4.75 4.75 4-ID-C CPU 0 0 0 7-ID-C&D Undulator 1 1 1 7-BM-B Bend 1 1 1 10-ID-B Undulator 0.5 0.5 0.5 11-ID-D Undulator 1 1 1 14-ID-B Undulator 1 1 1 20-ID Undulator 0.25 0.25 0.25 ALS 3 3 3 4.0.2 EPU 0 0 0 6.0.1 Undulator 1 1 1 6.0.2 Undulator 1 1 1 6.1.2 Bend 0 0 0 9.0.2 Undulator 1 1 1 11.0.1 EPU 0 0 0 11.0.2 EPU 0 0 0 SSRL 0.15 0.45 0.45

339

Submersible canned motor mixer pump  

DOE Patents (OSTI)

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.

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

1997-01-01T23:59:59.000Z

340

Submersible canned motor mixer pump  

DOE Patents (OSTI)

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.

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

1997-10-07T23:59:59.000Z

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


341

Conservation tillage and cover cropping influence soil properties in San Joaquin Valley cotton-tomato crop  

E-Print Network (OSTI)

2006 147 TREATMENTS CTCC: conservation tillage, covercrop CTNO: conservation tillage only STCC: standard tillage,1.24bc 1.35d * CTCC = conservation tillage, cover crop; CTNO

Veenstra, Jessica; Horwath, William; Mitchell, Jeffrey; Munk, Dan

2006-01-01T23:59:59.000Z

342

Environmental enhancement using short-rotation woody crops and perennial grasses as alternative agricultural crops  

DOE Green Energy (OSTI)

Short-rotation woody crops and perennial grasses are grown as biomass feedstocks for energy and fiber. When replacing traditional row crops on similar lands, these alternative crops can provide multiple environmental benefits in addition to enhancing rural economies and providing valuable resources. The DOE is supporting research to address how these crops can provide environmental benefits to soil, water, and native wildlife species in addition to providing bioenergy feedstocks. Research is underway to address the potential for biomass crops to provide soils conservation and water quality improvements in crop settings. Replacement of traditional erosive row drops with biomass crops on marginal lands and establishment of biomass plantations as filter strips adjacent to streams and wetlands are being studied. The habitat value of different crops for wildlife species is also considered. Combining findings on wildlife use of individual plantations with information on the cumulative effects of multiple plantations on wildlife populations can provide guidance for establishing and managing biomass crops to enhance biodiversity while providing feedstocks. Data from site-specific environmental studies can provide input for evaluation of the effects of large-scale plantings at both landscape and regional levels of resolution.

Tolbert, V.R. [Oak Ridge National Lab., TN (United States); Schiller, A. [Oak Ridge Inst. for Science and Education, TN (United States)

1996-10-01T23:59:59.000Z

343

Risk in agriculture : a study of crop yield distributions and crop insurance  

E-Print Network (OSTI)

Agriculture is a business fraught with risk. Crop production depends on climatic, geographical, biological, political, and economic factors, which introduce risks that are quantifiable given the appropriate mathematical ...

Gayam, Narsi Reddy

2006-01-01T23:59:59.000Z

344

Geothermal: Sponsored by OSTI -- Geothermal pump program  

Office of Scientific and Technical Information (OSTI)

pump program Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log On HomeBasic Search About Publications Advanced Search New Hot Docs News...

345

Subsea Pumped Hydro Storage -A Technology Assessment.  

E-Print Network (OSTI)

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

Falk, Johan

2013-01-01T23:59:59.000Z

346

Field Monitoring Protocol: Heat Pump Water Heaters  

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

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

347

Clarksville Department of Electricity - Residential Heat Pump...  

Open Energy Info (EERE)

Share this page on Facebook icon Twitter icon Clarksville Department of Electricity - Residential Heat Pump Loan Program (Tennessee) This is the approved revision of...

348

Energy Saving Absorption Heat Pump Water Heater  

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

349

Heat Pump Water Heaters—Laboratory Tests  

Science Conference Proceedings (OSTI)

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

2009-12-11T23:59:59.000Z

350

Energy Basics: Microhydropower Turbines, Pumps, and Waterwheels  

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

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

351

Survey of Geothermal Heat Pump Shipments  

U.S. Energy Information Administration (EIA)

Others 930 3,369 454 4,753 ... Source: Energy Information Administration, Form EIA-902 "Annual Geothermal Heat Pump Manufacturers Survey." Relased: March 2006

352

Crop-Hail Damage in the Midwest Corn Belt  

Science Conference Proceedings (OSTI)

Crop-hail damage in the ten Midwest corn belt states is examined during the period 1957–81. Estimates of crop losses due to hail are made from hail insurance data for each state and each significant crop in the region. The crop-hail losses are ...

Harry J. Hillaker Jr.; Paul J. Waite

1985-01-01T23:59:59.000Z

353

Modesto Irrigation District Smart Grid Project | Open Energy Information  

Open Energy Info (EERE)

District Smart Grid Project District Smart Grid Project Jump to: navigation, search Project Lead Modesto Irrigation District Recovery Act Funding $1,493,149.00 Total Project Value $2,986,298.00 Coverage Area Coverage Map: Modesto Irrigation District Smart Grid Project Coordinates 37.6390972°, -120.9968782° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[]}

354

Remote Sensing and Control for Establishing and Maintaining Digital Irrigation  

E-Print Network (OSTI)

The remotely sensed data from an unknown location is transmitted in real time through internet and gathered in a PC. The data is collected for a considerable period of time and analyzed in PC as to assess the suitability and fertility of the land for establishing an electronic plantation in that area. The analysis also helps deciding the plantation of appropriate plants in the location identified. The system performing this task with appropriate transducers installed in remote area, the methodologies involved in transmission and data gathering are reported.. The second part of the project deals with data gathering from remote site and issuing control signals to remote appliances in the site; all performed through internet. Therefore, this control scheme is a duplex system monitoring the irrigation activities by collecting data in one direction and issuing commands on the opposite direction. This scheme maintains the digital irrigation systems effectively and efficiently as to utilize the resources optimally f...

cellatoglu, Akin

2012-01-01T23:59:59.000Z

355

Solar irrigation program. Status report, October 1976--January 1977  

DOE Green Energy (OSTI)

The status of the Solar Irrigation Program is summarized. The program initially consisted of a shallow well experiment that is now under construction in New Mexico. It has recently been expanded to include a deep well experiment in Arizona and a follow-on, as yet undefined, demonstration system. Most of this report is limited to technical discussions of the shallow well experiment design, and analyses are given which support the design choices selected.

Alvis, R.L.

1977-04-01T23:59:59.000Z

356

Women and Irrigation in Nepal: Context, Issues and Prospects  

E-Print Network (OSTI)

are works that have economic value and include the production of commodities that are geared towards the market. Reproducti ve works are the domestic works of the household and are generally not considered "work" because these do not directly contribute... in search of economic alternatives. But it is not all that all women are engaged in irrigation. It is usually the poor women of nuclear families, whose husband/family members haslhave migrated out in search of other economical avenues, or separated women...

Ghimire, Sujan

2005-01-01T23:59:59.000Z

357

The Role of Electricity in Pacific Northwest Irrigated Agriculture, 1979-1987 : A Study of Irrigation Price Elasticity of Demand, the Importance of Irrigated Agriculture to Rural Communities, and an Evaluation of Alternative Targeted Rate Discount Options for Irrigation Consumers, Volume 1.  

Science Conference Proceedings (OSTI)

Increased regional pressure for and against the wholesale rate discount has prompted BPA to evaluate the quantitative, qualitative, economic, and policy issues associated with an irrigation rate discount. BPA determined that more information was required in the following areas: Irrigation price elasticities at the subregional level (utility, group of utilities and/or production areas), importance of irrigated agriculture to local and regional economies, issues related to targeting an irrigation rate discount, and the role of BPA wholesale rates and rate discounts on Pacific Northwest sprinkler irrigation and the supporting economies. In response to this request for additional information, the analysis in the present study is conducted in four parts: Document the importance of irrigated agriculture, particularly sprinkler irrigated agriculture, to the Pacific Northwest economy and quantify the impact of the rate discount on regional agriculture and local communities; Estimate irrigation price elasticities for BPA customers at a subregional level, so that load impacts associated with the rate discount can be evaluated at a more localized level; Identify the economic, policy, and practical application issues associated with targeting a rate discount to groups of utilities or irrigators; and Review the short-term economic and policy outlook for irrigated agriculture in the Pacific Northwest and draw implications regarding the impact on producer response to electricity rates. 40 refs., 1 fig., 24 tabs.

Northwest Economic Associates.

1989-05-01T23:59:59.000Z

358

Covered Product Category: Centrifugal Pumping System | Department of Energy  

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

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

359

Survey of advanced-heat-pump developments for space conditioning  

SciTech Connect

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

Fairchild, P.D.

1981-01-01T23:59:59.000Z

360

Higher U.S. Crop Prices Trigger Little Area Expansion so Marginal Land for Biofuel Crops Is Limited  

SciTech Connect

By expanding energy biomass production on marginal lands that are not currently used for crops, food price increases and indirect climate change effects can be mitigated. Studies of the availability of marginal lands for dedicated bioenergy crops have focused on biophysical land traits, ignoring the human role in decisions to convert marginal land to bioenergy crops. Recent history offers insights about farmer willingness to put non-crop land into crop production. The 2006-09 leap in field crop prices and the attendant 64% gain in typical profitability led to only a 2% increase in crop planted area, mostly in the prairie states

Swinton, S.; Babcock, Bruce; James, Laura; Bandaru, Varaprasad

2011-06-12T23:59:59.000Z

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


361

GEOTHERMAL HEAT PUMP GROUTING MATERIALS  

DOE Green Energy (OSTI)

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

ALLAN,M.

1998-04-01T23:59:59.000Z

362

Geothermal heat pump grouting materials  

Science Conference Proceedings (OSTI)

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

Allan, M.

1998-08-01T23:59:59.000Z

363

ABSORPTION HEAT PUMP IN THE DISTRICT HEATING  

E-Print Network (OSTI)

#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 #12;JSC RGAS SILTUMS · the biggest District Heating company in Latvia and in the Baltic states

Oak Ridge National Laboratory

364

Heat Pump Markets UK in Europe  

E-Print Network (OSTI)

,000 units Total: 200,000 units 48% 19% 26% 0% 7% boilers heat pumps solar thermal micro chp & FC district% boilers heat pumps solar thermals micro chp & FC district heating 2010 2020Sales to new build 15% 51% 18 to Renewables Boiler non- con. Boilers con. Boiler Boiler + ST ST Boiler condensing Boiler non-condensing Boiler

Oak Ridge National Laboratory

365

A Two?Stage Oil Diffusion Pump  

Science Conference Proceedings (OSTI)

A two?stage oil diffusion pump built of glass is described which makes possible the utilization of the advantages of oil without requiring the use of an unusually good coarse vacuum. The novelty of the pump resides in the first stage which is so designed that it cannot clog even with the small clearances needed to work against high pressures.

Joseph E. Henderson

1935-01-01T23:59:59.000Z

366

VOLUME COMPENSATING MEANS FOR PULSATING PUMPS  

DOE Patents (OSTI)

A double diaphragm, two-liquid pulsating pump for remote control use, having as an improvement an apparatus for maintaining constant the volume of the liquid such as kerosene between the two diaphragms is described. Phase difficulties encountered in the operation of such pumps when the volume of the liquid is altered by changes in temperature are avoided.

Weaver, D.L.W.; MacCormack, R.S. Jr.

1959-12-01T23:59:59.000Z

367

Ground Loops for Heat Pumps and Refrigeration  

E-Print Network (OSTI)

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

Braud, H. J.

1986-01-01T23:59:59.000Z

368

LED pumped lithium neodymium tetraphosphate lasers  

SciTech Connect

Laser action in lithium neodymium tetraphosphate, LiNdP/sub 4/O/sub 12/ (LNP), crystals, pumped with Al/sub x/Ga/sub 1-x/As electroluminescent diodes, is reported, citing both end- and side-pump configurations. The threshold incident light-emitting diode (LED) intensities at about -30/sup 0/C are 14.9 W/cm/sup 2/ and 7.2 W/cm/sup 2/ for end and side pump, respectively. Temperature dependences of threshold, stimulated emission cross section, and round-trip loss were measured experimentally. Possibility of room-temperature cw operation, maximum output power, and optimum coupling are discussed. Taking account of improvements of pumping optics, crystal homogeneity and LED structure, LED intensities required for room-temperature cw operation are 35 W/cm/sup 2/ and 8.5 W/cm/sup 2/ for end and side pump, respectively.

Saruwatari, M.; Kimura, T.

1976-10-01T23:59:59.000Z

369

Screening Pumping Systems for Energy Savings Opportunities  

E-Print Network (OSTI)

In most industrial settings, energy consumed by pumping systems is responsible for a major part of the overall electricity bill. In some cases, the energy is used quite efficiently; in others, it is not. Facility operators may be very familiar with pumping system equipment controllability, reliability, and availability, but only marginally aware of system efficiency. But there are some good reasons to increase that awareness: 1) As budgets shrink and the intensity of both domestic and international competition increases, the pressure to find additional ways of reducing costs will grow. 2) The reliability of pumps correlates with pump efficiency; that is, pumps operated near the design, or best efficiency point, will tend to perform more reliably and with greater availability. 3) The questions of whether global warming is truly occurring, and if it is, whether humankind's activities play a significant role may both be debatable. But there is no debating the fact that there are finite energy resources, particularly of the fossil fuel variety, on the earth. If we are to be counted as good stewards, then careful, if not frugal resource use is important. The cost of energy consumed by pumps usually dominates the pump life cycle cost. But many end users, already stretched to support day-to-day facility operations, lack the time and resources to perform a methodical engineering study of, in some cases, hundreds of pumps within their facilities to understand the energy costs and the potential opportunity for reduction. 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 distributors recognize, both qualitatively and quantitatively, pumping system efficiency improvement opportunities. This paper describes the general methodologies employed and shows case study examples of the prescreening and software application.

Casada, D.

1999-05-01T23:59:59.000Z

370

Comparative Advantage in Bangladesh Crop Production  

E-Print Network (OSTI)

This study uses data from 1996/97 through 1998/99 to examine the relative efficiency of production of crops in Bangladesh and their comparative advantage in international trade as measured by net economic profitability (the profitability using economic, rather than financial costs and prices), and the domestic resource cost ratio, (the amount of value of non-tradable domestic resources used in production divided by the value of tradable products). The economic profitability analysis demonstrates that Bangladesh has a comparative advantage in domestic production of rice for import substitution. However, at the export parity price, economic profitability of rice is generally less than economic profitability of many non-rice crops, implying that Bangladesh has more profitable options other than production for rice export. Several non-cereal crops, including vegetables, potatoes and onions have financial and economic returns that are as high as or higher than those of High Yielding Variety (HYV) rice. The relatively minor role in cropping systems of these crops despite their higher returns, can largely be attributed to high price risks associated with marketing, suggesting the need for further development of agro-processing industries, rural infrastructure, and marketing networks. iii TABLE OF CONTENTS 1.

Quazi Shahabuddin; Paul Dorosh; Ashok Gulati; K. M. Rahman; M. K. Mujeri

2002-01-01T23:59:59.000Z

371

Clark Public Utilities - Residential Heat Pump Loan Program | Department of  

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

Heat Pump Loan Program Heat Pump Loan Program Clark Public Utilities - Residential Heat Pump Loan Program < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Heat Pumps Maximum Rebate Air-Source Heat Pumps: $20,000 Geothermal Heat Pumps: $30,000 Program Info State District of Columbia Program Type Utility Loan Program Rebate Amount Air-Source Heat Pump: up to $20,000 Geothermal Heat Pumps: up to $30,000 Provider Clark Public Utilities Clark Public Utilities offers loans of up to $20,000 for air-source heat pumps and $30,000 for geothermal heat pumps. Loans will help customers cover the up-front cost of installing a highly efficient heat pump in a residence. All electrically heated homes, including manufactured homes, are eligible for the heat pump financing program, as long as the home has been

372

Air-Source Heat Pumps | Department of Energy  

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

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

373

Best Practice for Energy Efficient Cleanrooms: Variable Speed Pumping  

E-Print Network (OSTI)

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

Xu, Tengfang

2005-01-01T23:59:59.000Z

374

The Potential for Pennsylvania Crops as Biofuels Higher energy costs over the past few years have created opportunities for the use of crops and crop residues  

E-Print Network (OSTI)

The Potential for Pennsylvania Crops as Biofuels Higher energy costs over the past few years have Potential for Pennsylvania Crops as Biofuels 2 Soybeans Soybean acreage is on the increase in Pennsylvania For more information about using Pennsylvania crops as biofuels, contact: GREG ROTH PROFESSOR OF AGRONOMY

Lee, Dongwon

375

Yield and quality responses of corn silage genotypes under reduced irrigation in the Texas High Plains.  

E-Print Network (OSTI)

??Two main options exist for producers to optimize the production of corn silage in limited-irrigation systems. First, they can utilize best management practices to make… (more)

Spinhirne, Bruce

2012-01-01T23:59:59.000Z

376

Solar-powered irrigation systems. Technical progress report, July 1977--January 1978  

DOE Green Energy (OSTI)

Dispersed solar thermal power systems applied to farm irrigation energy needs are analyzed. The 17 western states, containing 84% of nationwide irrigated croplands and consuming 93% of nationwide irrigation energy, have been selected to determine were solar irrigation systems can compete most favorably with conventional energy sources. Financial analysis of farms, according to size and ownership, was accomplished to permit realistic comparative analyses of system lifetime costs. Market potential of optimized systems has been estimated for the 17-state region for near-term (1985) and intermediate-term (2000) applications. Technical, economic, and institutional factors bearing on penetration and capture of this market are being identified.

None

1978-02-28T23:59:59.000Z

377

Assessment of New Energy Efficient Circulator Pump Technology  

Science Conference Proceedings (OSTI)

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

2010-11-15T23:59:59.000Z

378

The Energy Crops Company | Open Energy Information  

Open Energy Info (EERE)

Crops Company Crops Company Jump to: navigation, search Name The Energy Crops Company Place Cobham, United Kingdom Zip KT11 2LA Sector Biomass Product Distributor of pellets and installer of biomass heating equipment in Surrey, UK. Coordinates 41.739891°, -79.322189° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.739891,"lon":-79.322189,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

379

Top Crop Wind Farm | Open Energy Information  

Open Energy Info (EERE)

Crop Wind Farm Crop Wind Farm Facility Top Crop Wind Farm Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Horizon-EDPR Developer Horizon-EDPR Location Grundy/Livingston/La Salle Counties IL Coordinates 41.159826°, -88.637381° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.159826,"lon":-88.637381,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

380

Signature Region of Interest using Auto cropping  

E-Print Network (OSTI)

A new approach for signature region of interest pre-processing was presented. It used new auto cropping preparation on the basis of the image content, where the intensity value of pixel is the source of cropping. This approach provides both the possibility of improving the performance of security systems based on signature images, and also the ability to use only the region of interest of the used image to suit layout design of biometric systems. Underlying the approach is a novel segmentation method which identifies the exact region of foreground of signature for feature extraction usage. Evaluation results of this approach shows encouraging prospects by eliminating the need for false region isolating, reduces the time cost associated with signature false points detection, and addresses enhancement issues. A further contribution of this paper is an automated cropping stage in bio-secure based systems.

Al-Mahadeen, Bassam; AlTarawneh, Islam H

2010-01-01T23:59:59.000Z

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


381

Efficacy and Timing of Fungicides, Bactericides, and Biologicals for Decidous Tree Fruit, Nut, Strawberry, and Vine Crops  

E-Print Network (OSTI)

Strawberry, and Vine Crops—2008 University of California —NUT, STRAWBERRY, AND VINE CROPS 2008 (Updated 2/19/08)crops .

Adaskaveg, Jim; Gubler, Doug; Michailides, Themis; Holtz, Brent

2008-01-01T23:59:59.000Z

382

Biomass resource potential using energy crops  

DOE Green Energy (OSTI)

Biomass energy crops can provide a significant and environmentally beneficial source of renewable energy feedstocks for the future. They can revitalize the agricultural sector of the US economy by providing profitable uses for marginal cropland. Energy crops include fast-growing trees, perennial grasses, and annual grasses, all capable of collecting solar energy and storing it as cellulosic compounds for several months to several years. Once solar energy is thus captured, it can be converted by means of currently available technologies to a wide variety of energy products such as electricity, heat, liquid transportation fuels, and gases. Experimental results from field trials have generated optimism that selected and improved energy crops, established on cropland with moderate limitations for crop production, have the potential for producing high yields. Both trees and grasses, under very good growing conditions, have produced average annual yields of 20 to 40 dry Mg ha{sup {minus}1} year{sup {minus}1}. Sorghum has shown especially high yields in the Midwest. Hybrids between sugar cane and its wild relatives, called energy cane, have yielded as much as 50 dry Mg ha{sup {minus}1} year{sup {minus}1} in Florida. These experimental results demonstrate that some species have the genetic potential for very rapid growth rates. New wood energy crop systems developed by the Department of Energy`s Biofuels Feedstock Development Program offer, at a minimum, a 100% increase in biomass production rates over the 2 to 4 Mg ha{sup {minus}1} year{sup {minus}1} of dry leafless woody biomass produced by most natural forest systems. Experimental data indicate that short rotation wood crops established on cropland with moderate limitations are capable of producing biomass yields of 8--20 dry Mg ha{sup {minus}1} year{sup {minus}1} with a present average about 11 dry Mg ha{sup {minus}1} year{sup {minus}1} on typical cropland sites.

Wright, L.L.; Cushman, J.H.; Martin, S.A.

1993-09-01T23:59:59.000Z

383

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

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

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

384

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

E-Print Network (OSTI)

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

Franco, Victor

2011-01-01T23:59:59.000Z

385

Overview of Pump Systems Matter | Department of Energy  

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

PumpSystemsMatter.pdf More Documents & Publications Summary of 2011 Accomplishments HI & PSM Course Overview Pump Systems Matter Optimization Hydraulic Institute Member Benefits...

386

Bandera Electric Cooperative - Residential Heat Pump Rebate Program...  

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

Bandera Electric Cooperative - Residential Heat Pump Rebate Program Bandera Electric Cooperative - Residential Heat Pump Rebate Program Eligibility Residential Savings For Heating...

387

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

Open Energy Info (EERE)

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

388

Energy 101: Geothermal Heat Pumps | Department of Energy  

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

Sites Power Marketing Administration Other Agencies You are here Home Energy 101: Geothermal Heat Pumps Energy 101: Geothermal Heat Pumps Addthis Description An energy-efficient...

389

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

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

Other Agencies You are here Home Savings White County REMC - Residential Geothermal Heat Pump Rebate Program White County REMC - Residential Geothermal Heat Pump Rebate...

390

Assessment of Hybrid Geothermal Heat Pump Systems - Technology...  

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

cool- ing needs of the building and offers general guidelines Assessment of Hybrid Geothermal Heat Pump Systems Geothermal heat pumps offer attractive choice for space...

391

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

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

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

392

Super Energy Saver Heat Pump - Energy Innovation Portal  

ORNL researchers developed a broad class of dynamic hybrid phase change materials and coupled them to residential heat pumps, inventing a super energy saver heat pump.

393

Electrically Distributed Optically Pumped Laser Spark Plug and...  

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

Distributed Optically Pumped Laser Spark Plug and Ignition System Opportunity Research is active on the patent-pending technology, titled "Electrically Distributed Optically Pumped...

394

W.: Auto Cropping for Digital Photographs  

E-Print Network (OSTI)

In this paper, we propose an effective approach to the nearly untouched problem, still photograph auto cropping, which is one of the important features to automatically enhance photographs. To obtain an optimal result, we first formulate auto cropping as an optimization problem by defining an energy function, which consists of three sub models: composition sub model, conservative sub model and penalty sub model. Then, particle swarm optimization (PSO) is employed to obtain the optimal solution by maximizing the objective function. Experimental results and user studies over hundreds of photographs show that the proposed approach is effective and accurate in most cases, and can be used in many practical multimedia applications. 1.

Mingju Zhang

2005-01-01T23:59:59.000Z

395

Supercharger for Heat Pumps in Cold Climates  

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

Supercharger for Heat Supercharger for Heat Pumps in Cold Climates Thomas J. Walter Mechanical Solutions, Inc. tjw@mechsol.com 518-320-8552 April 3, 2013 DOE SBIR Grant No. SC0006162 Concept is similar to superchargers for piston engine aircraft 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: Electrically driven heat pumps are an effective method of extracting heat from ambient air. As air temperature falls, however, heat pump performance falls off, essentially limiting their year round usefulness to

396

Supercharger for Heat Pumps in Cold Climates  

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

Supercharger for Heat Supercharger for Heat Pumps in Cold Climates Thomas J. Walter Mechanical Solutions, Inc. tjw@mechsol.com 518-320-8552 April 3, 2013 DOE SBIR Grant No. SC0006162 Concept is similar to superchargers for piston engine aircraft 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: Electrically driven heat pumps are an effective method of extracting heat from ambient air. As air temperature falls, however, heat pump performance falls off, essentially limiting their year round usefulness to

397

Canned pump having a high inertia flywheel  

DOE Patents (OSTI)

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.

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

1989-01-01T23:59:59.000Z

398

Canned pump having a high inertia flywheel  

DOE Patents (OSTI)

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.

Veronesi, L.; Raimondi, A.A.

1989-12-12T23:59:59.000Z

399

Solid state radiative heat pump  

DOE Patents (OSTI)

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.

Berdahl, Paul H. (Oakland, CA)

1986-01-01T23:59:59.000Z

400

Solid state radiative heat pump  

DOE Patents (OSTI)

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.

Berdahl, P.H.

1984-09-28T23:59:59.000Z

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


401

1980 annual report of the Coolidge Solar Irrigation Project  

DOE Green Energy (OSTI)

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.

Torkelson, L.; Larson, D. L.

1981-02-01T23:59:59.000Z

402

Preplant 1,3-D treatments test well for perennial crop nurseries, but challenges remain  

E-Print Network (OSTI)

for 26-month June-budded crop if soil has been previouslyfruit and nut nursery crops in the United States. Outlooktest well for perennial crop nurseries, but challenges

2013-01-01T23:59:59.000Z

403

The Cost of Crop Damage Caused by Ozone Air Pollution From Motor Vehicles  

E-Print Network (OSTI)

L. (1982). Assessment of crop loss from ozone. Journal of1984). Assessing impacts of ozone on agricultural crops: II.crop yield functions and alternative exposure statistics.

Murphy, James; Delucchi, Mark; McCubbin, Donald; Kim, H.J.

1999-01-01T23:59:59.000Z

404

Conventional and molecular assays aid diagnosis of crop diseases and fungicide resistance  

E-Print Network (OSTI)

orchards in California. Crop Protec Ma Z, Yoshimura MA,assays aid diagnosis of crop diseases and fungicidemonitor, diagnose and quantify crop pathogens. We have also

2005-01-01T23:59:59.000Z

405

Integrated nutrient managment for sustainable production of sorghum-wheat crop sequeence  

E-Print Network (OSTI)

Rhizosperic environment and crop productivity. A reviewpaol) is the most important crop sequence of India occupyingMore over sorghum-wheat crop sequence is an exhaustive

Bhale, Vilas Madhukar Dr.

2009-01-01T23:59:59.000Z

406

Pigeonpea genomics initiative (PGI): an international effort to improve crop productivity of pigeonpea (Cajanus cajan L.)  

E-Print Network (OSTI)

effort to improve crop productivity of pigeonpea (CajanusMallikarjuna International Crops Research Institute for thean important food legume crop in the semi-arid regions of

2010-01-01T23:59:59.000Z

407

OUTLOOK: Specialty crops and methyl bromide alternatives: Taking stock after 7 years  

E-Print Network (OSTI)

to Outlook Specialty crops and methyl bromide alternatives:Research Plant Pathologist, Crops Pathology and GeneticsS Jack Kelly Clark pecialty crop farms and nurseries in

Browne, Greg T

2013-01-01T23:59:59.000Z

408

The impact of mineral fertilizers on the carbon footprint of crop production  

E-Print Network (OSTI)

Impact of Agricultural Crop Production using the Life Cyclefield with the harvested crops and the nutrients supplied bysee Fig. 1). Supply of crop residues & organic fertilizer

Brentrup, Frank

2009-01-01T23:59:59.000Z

409

Effect of Organic Farming on Soil Fertility , Yield and Quality of Crops in the Tropics  

E-Print Network (OSTI)

are the most essential crops in organic farming systems.Among the various vegetable crops grown in Kerala, cowpeahealth, yield, and quality of crops under organic farming.

Bhaskaran, Usha Pankajam; Krishna, Devi

2009-01-01T23:59:59.000Z

410

Access to intellectual property is a major obstacle to developing transgenic horticultural crops  

E-Print Network (OSTI)

technologies for targeted crop applications in sub- Saharanof genetically engineered crop variet- ies — such as publictransgenic horticultural crops Gregory D. Graff Brian D.

Graff, Gregory D.; Wright, Brian D.; Bennett, Alan B.; Zilberman, David

2004-01-01T23:59:59.000Z

411

The Cost of Crop Damage Caused by Ozone Air Pollution From Motor Vehicles  

E-Print Network (OSTI)

D. T. Tingey, Assessment of Crop Loss From Air Pollutants,,Assessing Impacts of Ozone on Agricultural Crops: II.Crop Yield Functions and Alternative Exposure Statistics",

Delucchi, Mark A.; Murphy, James; Kim, Jin; McCubbin, Donald R.

1996-01-01T23:59:59.000Z

412

Crop rotation and genetic resistance reduce risk of damage from Fusarium wilt in lettuce  

E-Print Network (OSTI)

ReVIEW Article Crop rotation and genetic resistance reduceon lettuce, not on any other crops tested (Hubbard and Gerikapproach that includes crop rotation to reduce soil inoculum

2012-01-01T23:59:59.000Z

413

Biomass crops can be used for biological disinfestation and remediation of soils and water  

E-Print Network (OSTI)

reduced feed intake. Biomass crop sustainability flexibilityEM, Davis RM. 2005. Mustard crops ineffective in soil-bornefor selective weed control. Crop Prot Ramirez-Villapudua J,

Stapleton, James J; Banuelos, Gary

2009-01-01T23:59:59.000Z

414

Switchgrass is a promising, high-yielding crop for California biofuel  

E-Print Network (OSTI)

responses of switchgrass crops to nitrogen fertilizer haveproduction systems for biomass energy crops. Because it canas forage and as a biofuel crop, switchgrass may be well

2011-01-01T23:59:59.000Z

415

Market Potential for Organic Crops in California: Almonds, Hay, and Winegrapes  

E-Print Network (OSTI)

and Agriculture. “State Organic Crop and Acreage Report. ”Market Potential for Organic Crops in California: Almonds,Market Potential for Organic Crops in California: Almonds,

Brodt, Sonja; Klonsky, Karen; Thrupp, Ann

2009-01-01T23:59:59.000Z

416

Density derived estimates of standing crop and net primary production in the giant kelp Macrocystis pyrifera  

E-Print Network (OSTI)

estimates of standing crop and net primary production in thevariables of standing crop and net primary production (NPP)southern California. Standing crop was much more strongly

Reed, Daniel; Rassweiler, Andrew; Arkema, Katie

2009-01-01T23:59:59.000Z

417

Irrigated and Dryland Sorghum Production in South and Southwest Texas  

E-Print Network (OSTI)

After decades of research, the effects and interactions of fertility, row and plant spacing, planting date, environmental conditions, insects, diseases and hybrids are better understood. All are important in determining sorghum crop yield. This publication gives information on growth and development, planting, plant density, fertility and water.

Stichler, Charles; McFarland, Mark L.; Coffman, Cloyce G.

1997-06-03T23:59:59.000Z

418

Heat Pump Water Heaters Demonstration Project  

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

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

419

Ag & Water Pump | OpenEI  

Open Energy Info (EERE)

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

420

Performance of a New Lightweight Reciprocating Pump  

DOE Green Energy (OSTI)

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.

Whitehead, J C

2005-06-09T23:59:59.000Z

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


421

Edmond Electric- Residential Heat Pump Rebate Program  

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

422

SP-100 thermoelectric-electromagnetic pump review  

DOE Green Energy (OSTI)

This report contains vugraphs of a presentation on thermoelectric-electromagnetic pumps. It contains: engineering drawings; summary of rectangular TEMP results and comparison with GE predictions; and results of optimization study.

NONE

1988-12-31T23:59:59.000Z

423

Energy Basics: Heat Pump Water Heaters  

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

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

424

Thermal pumping of light-emitting diodes  

E-Print Network (OSTI)

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 ...

Gray, Dodd (Dodd J.)

2011-01-01T23:59:59.000Z

425

Absorption Heat Pumps | Department of Energy  

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

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

426

Ductless, Mini-Split Heat Pumps  

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

Ductless, mini-split-system heat pumps (mini splits), as their name implies, do not have ducts. Therefore, they make good retrofit add-ons to houses or buildings with "non-ducted" heating systems,...

427

Electrospray emitters For diffusion vacuum pumps  

E-Print Network (OSTI)

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 ...

Diaz Gómez Maqueo, Pablo (Pablo Ly)

2011-01-01T23:59:59.000Z

428

Improving the Way We Harvest & Deliver Biofuels Crops | Department...  

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

Improving the Way We Harvest & Deliver Biofuels Crops Improving the Way We Harvest & Deliver Biofuels Crops May 24, 2013 - 9:40am Addthis The self-propelled baler collects and...

429

D1 Fuel Crops Ltd | Open Energy Information  

Open Energy Info (EERE)

D1 Fuel Crops Ltd Jump to: navigation, search Name D1 Fuel Crops Ltd Place London, United Kingdom Zip SE1 2RE Product London-based JV between BP and D1 oils focusing on the...

430

Contemporary and historical classification of crop types in Arizona  

Science Conference Proceedings (OSTI)

This research compares three different classification algorithms for mapping crops in Pinal County, Arizona, using both present and historical image data. The study area lacked past crop maps, and farmers were dealing with the risk of evolution of resistance ...

KyleA. Hartfield, StuartE. Marsh, ChristaD. Kirk, Yves Carričre

2013-09-01T23:59:59.000Z

431

Exploding conducting film laser pumping apparatus  

DOE Patents (OSTI)

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.

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

1984-04-27T23:59:59.000Z

432

Heat Pump Water Heaters for Commercial Buildings  

Science Conference Proceedings (OSTI)

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

2011-12-22T23:59:59.000Z

433

S-102 Transfer Pump Restriction Modeling Results  

SciTech Connect

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

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

2008-03-27T23:59:59.000Z

434

Laser-induced quantum pumping in graphene  

SciTech Connect

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

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

2012-10-08T23:59:59.000Z

435

A Century of Monitoring Weather and Crops: The Weekly Weather and Crop Bulletin  

Science Conference Proceedings (OSTI)

Publication of a national weekly weather summary called the Weekly Weather Chronicle began in 1872. This summary was the precursor of today's Weekly Weather and Crop Bulletin (WWCB), a publication that reports global weather and climate ...

Thomas R. Heddinghaus; Douglas M. Le Comte

1992-02-01T23:59:59.000Z

436

A Modeling Study of Irrigation Effects on Surface Fluxes and Land–Air–Cloud Interactions in the Southern Great Plains  

Science Conference Proceedings (OSTI)

In this study, the authors incorporate an operational-like irrigation scheme into the Noah land surface model as part of the Weather Research and Forecasting Model (WRF). A series of simulations, with and without irrigation, is conducted over the ...

Yun Qian; Maoyi Huang; Ben Yang; Larry K. Berg

2013-06-01T23:59:59.000Z

437

The Effect of Irrigation on Regional Temperatures: A Spatial and Temporal Analysis of Trends in California, 1934–2002  

Science Conference Proceedings (OSTI)

The response of air temperatures to widespread irrigation may represent an important component of past and/or future regional climate changes. The quantitative impact of irrigation on daily minimum and maximum temperatures (Tmin and Tmax) in ...

David B. Lobell; Céline Bonfils

2008-05-01T23:59:59.000Z

438

Vertical pump turbine oil environmental evaluation  

DOE Green Energy (OSTI)

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

Culver, G.

1991-04-01T23:59:59.000Z

439

Pharmaceutical crops have a mixed outlook in California  

E-Print Network (OSTI)

crops have a mixed outlook in California by Michelle Marvieras environmental harm. The outlook for the production of

Marvier, Michelle

2007-01-01T23:59:59.000Z

440

K-Basin sludge treatment facility pump test report  

Science Conference Proceedings (OSTI)

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

SQUIER, D.M.

1999-06-02T23:59:59.000Z

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


441

Annular linear induction pump with an externally supported duct  

DOE Patents (OSTI)

Several embodiments of an annular linear induction pump for pumping liquid metals are disclosed having the features of generally one pass flow of the liquid metal through the pump and an increased efficiency resulting from the use of thin duct walls to enclose the stator. The stator components of this pump are removable for repair and replacement.

Craig, Edwin R. (San Jose, CA); Semken, Robert S. (Idaho Falls, ID)

1979-01-01T23:59:59.000Z

442

Super Energy Saver Heat Pump with Dynamic Hybrid Phase Change ...  

Super Energy Saver Heat Pump with Dynamic Hybrid Phase Change Material United States Patent Application

443

Test of a solar crop dryer Danish Technological Institute  

E-Print Network (OSTI)

Test of a solar crop dryer Danish Technological Institute Danish Institute of Agricultural Sciences Aidt Miljø A/S SEC-R-6 #12;Test of a solar crop dryer Søren �stergaard Jensen Danish Technological/S January 2001 #12;Preface The report describes the tests carried out on a solar crop dryer. The work

444

Electric Fuel Pump Condition Monitor System Using Electricalsignature Analysis  

DOE Patents (OSTI)

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.

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

2005-09-13T23:59:59.000Z

445

Centrifugal and Positive Displacement Charging Pump Maintenance Guide  

Science Conference Proceedings (OSTI)

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

1996-12-31T23:59:59.000Z

446

An Analysis of Efficiency Improvements in Residential Sized Heat Pumps  

E-Print Network (OSTI)

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 be used to improve heat pump efficiency, and (5) development of heat pump designs to cover the whole spectrum of efficiencies available today and those that may be technologically feasible in the next few years.

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

1986-01-01T23:59:59.000Z

447

Alignment and operability analysis of a vertical sodium pump  

SciTech Connect

With the objective of identifying important alignment features of pumps such as FFTF, HALLAM, EBR II, PNC, PHENIX, and CRBR, alignment of the vertical sodium pump for the Clinch River Breeder Reactor Plant (CRBRP) is investigated. The CRBRP pump includes a flexibly coupled pump shaft and motor shaft, two oil-film tilting-pad hydrodynamic radial bearings in the motor plus a vertical thrust bearing, and two sodium hydrostatic bearings straddling the double-suction centrifugal impeller in the pump.

Gupta, V.K.; Fair, C.E.

1981-01-01T23:59:59.000Z

448

Use of Irrigation to Extend the Seeding Window for Final Reclamation at Yucca Mountain, Nevada  

SciTech Connect

The U.S. Department of Energy has implemented a program to investigate the feasibility of various techniques for reclaiming lands disturbed during site characterization at Yucca Mountain. As part of this program, two studies were conducted in 1997 to assess the effects of combinations of seeding date (date that seeds are planted) and supplemental irrigation on densities of native plant species at Yucca Mountain. Study objectives were to (1) determine whether the traditional seeding window (October-December) could be extended through combinations of seeding date and irrigation date, (2) determine which combination of seeding date and irrigation was most successful, and (3) assess the effects of irrigation versus natural precipitation on seedling establishment. In the first study, a multi-species seed mix of 16 native species was sown into plots on four dates (12/96, 2/97, 3/97, and 4/97). Irrigation treatments were control (no irrigation) or addition of 80 mm of supplemental water applied over a one month period. Plant densities were sampled in August and again in October, 1997. In the second study, Larrea tridentata and Lycium andersonii, two species that are common at Yucca Mountain, but difficult to establish from seed, were sown together into plots in January and August, 1997. Half the plots were irrigated with approximately 250 mm of water between August 18 and September 11, while the remaining plots received no irrigation (control). Plant densities were sampled in October, 1997. The August census for the multi-species mix study showed irrigated plots that were sown in February, March and April had higher plant densities and more species than plots that were not irrigated. Irrigation had no effect on plant densities on plots that were seeded in December. Plots were used again in October following 18 mm of precipitation in September. Densities of three species, Ambrosia dumosa, Hymenoclea salsola, and L. tridentata, (warm-season species) were lower on irrigated plots sown in December, February, and March, and showed no response to irrigation on plots sown in April. Therefore, early spring irrigation did not facilitate establishment of warm-season species. These results suggest that these species are dependent upon precipitation while temperatures are warm in late summer or fall. However, control plots that were seeded in December had acceptable densities of these species. A more practical approach might be to avoid irrigation costs by seeding in December and waiting for fall precipitation. The remaining species (cool-season species) showed an opposite response to supplemental water with greater densities on irrigated plots sown in February, March, and April, and no response to irrigation on plots sown in December. While these results show that irrigation can extend the seeding window for cool-season species should it be necessary, it was also apparent that if seeds are sown by late December, irrigation is not necessary to achieve acceptable plant densities.

TRW Environmental Safety

2000-08-01T23:59:59.000Z

449

Promotion of efficient heat pumps for heating (ProHeatPump)  

E-Print Network (OSTI)

and towns have (some) district heating, and DH currently supplies 1% of heating for buildings in Norway.2 to district heating if there is a supply. According to HP industry representatives, howeverProject Promotion of efficient heat pumps for heating (ProHeatPump) EIE/06/072 / S12

450

Experimental performance of solid-gas chemical heat pump in solar chemical heat pump dryer  

Science Conference Proceedings (OSTI)

A solar assisted chemical heat pump dryer has been designed, fabricated and tested. The performance of the system has been studied under the meteorological conditions of Malaysia. The system consists of four mean components: solar collector (evacuated ... Keywords: coefficient of performance, drying, energy density, evacuated tubes solar collector, reactor temperature, solid gas chemical heat pump

M. Ibrahim; K. Sopian; A. S. Hussein; W. R. W. Daud; A. Zaharim

2009-02-01T23:59:59.000Z

451

Gaze-Based Interaction for Semi-Automatic Photo Cropping  

E-Print Network (OSTI)

We present an interactive method for cropping photographs given minimal information about the location of important content, provided by eye tracking. Cropping is formulated in a general optimization framework that facilitates adding new composition rules, as well as adapting the system to particular applications. Our system uses fixation data to identify important content and compute the best crop for any given aspect ratio or size, enabling applications such as automatic snapshot recomposition, adaptive documents, and thumbnailing. We validate our approach with studies in which users compare our crops to ones produced by hand and by a completely automatic approach. Experiments show that viewers prefer our gaze-based crops to uncropped images and fully automatic crops. Author Keywords cropping, photography, composition, evaluation, eye tracking, visual perception

Anthony Santella; Maneesh Agrawala; Doug Decarlo; David Salesin; Michael Cohen

2006-01-01T23:59:59.000Z

452

International Crops Research Institute for the Semi Arid Tropics | Open  

Open Energy Info (EERE)

Crops Research Institute for the Semi Arid Tropics Crops Research Institute for the Semi Arid Tropics Jump to: navigation, search Name International Crops Research Institute for the Semi-Arid Tropics Place India Sector Biofuels Product Biofuels ( Academic / Research foundation ) References International Crops Research Institute for the Semi-Arid Tropics[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. International Crops Research Institute for the Semi-Arid Tropics is a company located in India . References ↑ "International Crops Research Institute for the Semi-Arid Tropics" Retrieved from "http://en.openei.org/w/index.php?title=International_Crops_Research_Institute_for_the_Semi_Arid_Tropics&oldid=347036

453

Projecting market demand for residential heat pumps  

SciTech Connect

Primarily because of technological improvements and sharp increases in energy prices after the 1970s energy crises, the sale of residential electric heat pumps rose ninefold from 1970 to 1983. This report describes current and future market demand for heat pumps used for space heating and cooling. A three-step approach was followed. In the first step, the historical growth of residential electric heat pumps was analyzed, and factors that may have affected market growth were examined. Also examined were installation trends of heat pumps in new single-family and multifamily homes. A market segmentation analysis was used to estimate market size by categories. In the second step, several methods for forecasting future market demand were reviewed and evaluated to select the most suitable one for this study. The discrete-choice approach was chosen. In the third step, a market penetration model based on selected discrete-choice methods was developed to project heat pump demand in key market segments such as home type (single-family or multifamily), new or existing construction, and race-ethnic origin of household (black, Hispanic, or white).

Teotia, A.P.S.; Raju, P.S.; Karvelas, D.; Anderson, J.

1987-04-01T23:59:59.000Z

454

Cold Climates Heat Pump Design Optimization  

SciTech Connect

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.

Abdelaziz, Omar [ORNL; Shen, Bo [ORNL

2012-01-01T23:59:59.000Z

455

Solar-powered turbocompressor heat pump system  

DOE Patents (OSTI)

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.

Landerman, A.M.; Biancardi, F.R.; Melikian, G.; Meader, M.D.; Kepler, C.E.; Anderson, T.J.; Sitler, J.W.

1982-08-12T23:59:59.000Z

456

APT/LEDA RFQ vacuum pumping system  

DOE Green Energy (OSTI)

This paper describes the design and fabrication of a vacuum pumping system for the ATP/LEDA (Low Energy Demonstration Accelerator) RFQ (Radio Frequency Quadrupole) linac. Resulted from the lost proton beam, gas streaming from the LEBT (Low Energy Beam Transport) and out-gassing from the surfaces of the RFQ cavity and vacuum plumbing, the total gas load will be on the order of 7.2 x 10{sup -4} Torr-liters/sec, consisting mainly of hydrogen. The system is designed to pump on a continual basis with redundancy to ensure that the minimal operating vacuum level of 1 x 10{sup -6} Torr is maintained even under abnormal conditions. Details of the design, performance analysis and the preliminary test results of the cryogenic pumps are presented.

Shen, S., LLNL

1997-07-21T23:59:59.000Z

457

Frostless heat pump having thermal expansion valves  

DOE Patents (OSTI)

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.

Chen, Fang C [Knoxville, TN; Mei, Viung C [Oak Ridge, TN

2002-10-22T23:59:59.000Z

458

Optical pumping production of spin polarized hydrogen  

DOE Green Energy (OSTI)

There has been much interest recently in the production of large quantities of spin polarized hydrogen in various fields, including controlled fusion, quantum fluids, high energy, and nuclear physics. One promising method for the development of large quantities of spin polarized hydrogen is the utilization of optical pumping with a laser. Optical pumping is a process in which photon angular momentum is converted into electron and nuclear spin. The advent of tunable CW dye lasers (approx. 1 watt) allows the production of greater than 10/sup 18/ polarized atoms/sec. We have begun a program at Princeton to investigate the physics and technology of using optical pumping to produce large quantities of spin polarized hydrogen. Initial experiments have been done in small closed glass cells. Eventually, a flowing system, open target, or polarized ion source could be constructed.

Knize, R.J.; Happer, W.; Cecchi, J.L.

1984-09-01T23:59:59.000Z

459

Economic Analysis of Energy Crop Production in the U.S. - Location, Quantities, Price, and Impacts on Traditional Agricultural Crops  

DOE Green Energy (OSTI)

POLYSYS is used to estimate US locations where, for any given energy crop price, energy crop production can be economically competitive with conventional crops. POLYSYS is a multi-crop, multi-sector agricultural model developed and maintained by the University of Tennessee and used by the USDA-Economic Research Service. It includes 305 agricultural statistical districts (ASD) which can be aggregated to provide state, regional, and national information. POLYSYS is being modified to include switchgrass, hybrid poplar, and willow on all land suitable for their production. This paper summarizes the preliminary national level results of the POLYSYS analysis for selected energy crop prices for the year 2007 and presents the corresponding maps (for the same prices) of energy crop production locations by ASD. Summarized results include: (1) estimates of energy crop hectares (acres) and quantities (dry Mg, dry tons), (2) identification of traditional crops allocated to energy crop production and calculation of changes in their prices and hectares (acres) of production, and (3) changes in total net farm returns for traditional agricultural crops. The information is useful for identifying areas of the US where large quantities of lowest cost energy crops can most likely be produced.

Walsh, M.E.; De La Torre Ugarte, D.; Slinsky, S.; Graham, R.L.; Shapouri, H.; Ray, D.

1998-10-04T23:59:59.000Z

460

Feed-Pump Hydraulic Performance and Design Improvement, Phase I:  

Office of Scientific and Technical Information (OSTI)

Feed-Pump Hydraulic Performance Feed-Pump Hydraulic Performance and Design Improvement, Phase I: J2esearch Program Design Volume 2 EPRI EPRI CS-2323 Volume 2 Project 1884-6 Final Report March 1982 Keywords: Feed Pumps Feed Pump Reliability Feed Pump Hydraulics Feed Pump Design Feed Pump Research Feed Pump Specifications Prepared by Borg-Warner Corporation (Byron Jackson Pump Division and Borg-Warner Research Center) Carson, California and Massa^ f Technology Cambri__ . s ,-T. a a *a_^"nt.- ji^, w « ' jm.m ^j.^M\MMMim^mjii'mmmjmiiiimm\i- " I E CT R I C P 0 W E R R E S E A R C H I N ST ITO T E DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency Thereof, nor any of their employees,

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


461

Definition: Ground Source Heat Pumps | Open Energy Information  

Open Energy Info (EERE)

Pumps Pumps Jump to: navigation, search Dictionary.png Ground Source Heat Pumps A Ground Source Heat Pump is a central building heating and/or cooling system that takes advantage of the relatively constant year-round ground temperature to pump heat to or from the ground.[1][2][3] View on Wikipedia Wikipedia Definition A geothermal heat pump or ground source heat pump (GSHP) is a central heating and/or cooling system that pumps heat to or from the ground. It uses the earth as a heat source (in the winter) or a heat sink (in the summer). This design takes advantage of the moderate temperatures in the ground to boost efficiency and reduce the operational costs of heating and cooling systems, and may be combined with solar heating to form a geosolar system with even greater efficiency. Ground source heat pumps

462

Global crop yield losses from recent warming  

Science Conference Proceedings (OSTI)

Global yields of the world-s six most widely grown crops--wheat, rice, maize, soybeans, barley, sorghum--have increased since 1961. Year-to-year variations in growing season minimum temperature, maximum temperature, and precipitation explain 30% or more of the variations in yield. Since 1991, climate trends have significantly decreased yield trends in all crops but rice, leading to foregone production since 1981 of about 12 million tons per year of wheat or maize, representing an annual economic loss of $1.2 to $1.7 billion. At the global scale, negative impacts of climate trends on crop yields are already apparent. Annual global temperatures have increased by {approx}0.4 C since 1980, with even larger changes observed in several regions (1). While many studies have considered the impacts of future climate changes on food production (2-5), the effects of these past changes on agriculture remain unclear. It is likely that warming has improved yields in some areas, reduced them in others, and had negligible impacts in still others; the relative balance of these effects at the global scale is unknown. An understanding of this balance would help to anticipate impacts of future climate changes, as well as to more accurately assess recent (and thereby project future) technologically driven yield progress. Separating the contribution of climate from concurrent changes in other factors--such as crop cultivars, management practices, soil quality, and atmospheric carbon dioxide (CO{sub 2}) levels--requires models that describe the response of yields to climate. Studies of future global impacts of climate change have typically relied on a bottom-up approach, whereby field scale, process-based models are applied to hundreds of representative sites and then averaged (e.g., ref 2). Such approaches require input data on soil and management conditions, which are often difficult to obtain. Limitations on data quality or quantity can thus limit the utility of this approach, especially at the local scale (6-8). At the global scale, however, many of the processes and impacts captured by field scale models will tend to cancel out, and therefore simpler empirical/statistical models with fewer input requirements may be as accurate (8, 9). Empirical/statistical models also allow the effects of poorly modeled processes (e.g., pest dynamics) to be captured and uncertainties to be readily quantified (10). Here we develop new, empirical/statistical models of global yield responses to climate using datasets on broad-scale yields, crop locations, and climate variability. We focus on global average yields for the six most widely grown crops in the world: wheat, rice, maize, soybeans, barley, and sorghum. Production of these crops accounts for over 40% of global cropland area (11). 55% of non-meat calories, and over 70% of animal feed (12).

Lobell, D; Field, C

2006-06-02T23:59:59.000Z

463

Columbia River System Operation Review : Final Environmental Impact Statement, Appendix F: Irrigation, Municipal and Industrial/Water Supply.  

DOE Green Energy (OSTI)

Since the 1930`s, the Columbia River has been harnessed for the benefit of the Northwest and the nation. Federal agencies have built 30 major dams on the river and its tributaries. Dozens of non-Federal projects have been developed as well. The dams provide flood control, irrigation, navigation, hydro-electric power generation, recreation, fish and wildlife, and streamflows for wildlife, anadromous fish, resident fish, and water quality. This is Appendix F of the Environmental Impact Statement for the Columbia River System, focusing on irrigation issues and concerns arrising from the Irrigation and Mitigation of impacts (M&I) working Group of the SOR process. Major subheadings include the following: Scope and process of irrigation/M&I studies; Irrigation/M&I in the Columbia Basin Today including overview, irrigated acreage and water rights, Irrigation and M&I issues basin-wide and at specific locations; and the analysis of impacts and alternative for the Environmental Impact Statement.

Columbia River System Operations Review (U.S.); United States. Bonneville Power Administration; United States. Army. Corps of Engineers. North Pacific Division; United States. Bureau of Reclamation. Pacific Northwest Region.

1995-11-01T23:59:59.000Z

464

Rotordynamics of Twin-Screw Pumps  

E-Print Network (OSTI)

Twin-screw pumps are positive displacement machines. Two meshing screws connected by timing gears convey the fluid trapped in the screw chambers axially from suction to discharge and force it out against the back pressure. Because of the screw geometry, the circumferential pressure field around the screws is not balanced, resulting in net dynamic and static pressures applied on the rotors. The research work presented here aims at building and verifying a model to predict both: (1) the exciting lateral hydrodynamic forces produced by the unbalanced pressure field, and (2) the rotor response due to those forces. The model rests on the screw pump hydraulic models for predicting the pressure in the screw chambers as a function of the discharge pressure. These models are extended to predict the steady state dynamic pressure field as a function of the rotational angle of the rotor. The dynamic force resulting from the dynamic pressure field is calculated and applied to the rotor as a set of super-synchronous periodic forces. The structural model of the screw, although nonsymmetrical, was found to be accurately represented by an axisymmetric equivalent structure. The rotor response to the dynamic super-synchronous forces is calculated to predict the pump rotordynamic behavior. The work in this dissertation presents: (1) the axisymmetric structural model of the rotors (2) the proposed dynamic pressure model, (3) the screw pump rotor response, (4) the experimental validation of the dynamic pressure model and rotor response. The topic of twin-screw pump rotordynamics is absent from the literature. The original contribution of the work presented in this dissertation to the field of rotordynamics includes: (1) demonstrating the adequacy of an axisymmetric model for modeling the screw section, (2) developing a model for predicting the dynamic pressure field around the screws, (3) characterization of the dynamic forces (synchronous and its harmonics) applied at the screw pump rotors, (4) predicting the dynamic response of twin-screw pump rotors due to hydrodynamic forces, (5) measuring the axial dynamic pressure in two circumferential planes around the screws to verify pressure predictions, (6) measuring the dynamic response of twin-screw pump rotor.

Aboel Hassan Muhammed, Ameen

2013-05-01T23:59:59.000Z

465

High aspect ratio, remote controlled pumping assembly  

DOE Patents (OSTI)

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

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

1995-11-14T23:59:59.000Z

466

Heat Pump for High School Heat Recovery  

E-Print Network (OSTI)

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 has good economic property, can conserve energy and protects the environment. Therefore, there is a large potential for its development. In addition, three projects using this system are presented and contrasted, which indicate that a joint system that uses both the heat pump and heat exchanger to recycle waste heat is a preferable option.

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

2006-01-01T23:59:59.000Z

467

Heat reclaimer for a heat pump  

Science Conference Proceedings (OSTI)

This invention relates to a heat reclaiming device for a heat pump. The heat reclaimer is able to absorb heat from the compressor by circulating cooling fluid through a circuit which is mounted in good heat transfer relationship with the condenser, then around the shell of the motor-compressor and lastly around the hollow tube which connects the condenser to the compressor. The reclaiming circuit is connected into a fluid circulating loop which is used to supply heat to the evaporator coil of the heat pump.

Beacham, W.H.

1981-02-03T23:59:59.000Z

468

Extreme high-head portables provide more pumping options  

SciTech Connect

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.

Fiscor, S.

2006-10-15T23:59:59.000Z

469

A national research & development strategy for biomass crop feedstocks  

DOE Green Energy (OSTI)

Planning was initiated in 1996 with the objective of reevaluating current biomass feedstock research and development strategies to: (1) assure that by 2005, one or more commercial lignocellulosic to ethanol projects will be able to acquire a dependable supply of biomass crop feedstocks; (2) assure that recently initiated demonstrations of crops to electricity will be successful and; (3) assure that the research base needed to support future biomass industry expansion is being developed. Multiple trends and analyses indicate that biomass energy research and development strategies must take into account the fact that competition for land will define the upper limits of available biomass energy crop supplies and will largely dictate the price of those supplies. Only crop production and utilization strategies which contribute profit to the farmer or landowner and to energy producers will be used commercially for biomass energy production. Strategies for developing biomass {open_quotes}energy{close_quotes} crop supplies must take into consideration all of the methods by which biomass crops will enter biomass energy markets. The lignocellulosic materials derived from crops can be available as primary residues or crop by-products; secondary residues or processing by-products; co-products (at both the crop production and processing stages); or, as dedicated energy crops. Basic research and development (R&D) leading to yield improvement continues to be recommended as a major long-term focus for dedicated energy crops. Many additional near term topics need attention, some of which are also applicable to by-products and co-products. Switchgrass R&D should be expanded and developed with greater collaboration of USDA and state extension groups. Woody crop research should continue with significant cost-share from industries developing the crops for other commercial products. Co-product options need more investigation.

Wright, L.L.; Cushman, J.H.

1997-07-01T23:59:59.000Z

470

PROJECT SHEET SUBCOMMITTEE: Food Residues Subcommittee PROJECT TITLE: Expansion, Development and Harmonization of Crop Groups With Specified Representative Crops for Field Crop Residues Studies  

E-Print Network (OSTI)

GOAL/OBJECTIVE: To further develop and implement Crop groups utilized by NAFTA and based on representative commodities to foster worldwide harmonization of Crop groups and commodity terminology which will help remove trade irritants due to differences in commodity tolerance levels or MRLs for minor and specialty crops. PROJECT DESCRIPTION/PROCEDURE The Chairperson (Hong Chen) of the International Crop Grouping Consulting Committee (ICGCC) forwards the Symposium proposal for a particular crop group to the appropriate workgroup of the ICGCC via emails and requests the workgroup members to provide input on crop information and maximum residue limit (MRL) information (includes U.S., NAFTA, Codex and EU) on the commodities. Growers and commodity experts also provide valuable input on commodities. International members provide specific information on the commodities grown in their countries and regions which provides perspectives on harmonization approaches. Based on the input, the ICGCC Chairperson will prepare commodity monographs, divide subgroups, select representative crops and draft new crop group petitions. The draft petitions will be forwarded to the workgroup for review and comments before being finalized, and the

unknown authors

2007-01-01T23:59:59.000Z

471

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

E-Print Network (OSTI)

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

Hong, Tainzhen

2010-01-01T23:59:59.000Z

472

Heat pump having improved defrost system  

DOE Patents (OSTI)

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.

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

1998-12-08T23:59:59.000Z

473

Heat pump having improved defrost system  

DOE Patents (OSTI)

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.

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

1998-01-01T23:59:59.000Z

474

Vertical pump with free floating check valve  

DOE Patents (OSTI)

A vertical pump with a bottom discharge having a free floating check valve isposed in the outlet plenum thereof. The free floating check valve comprises a spherical member with a hemispherical cage-like member attached thereto which is capable of allowing forward or reverse flow under appropriate conditions while preventing reverse flow under inappropriate conditions.

Lindsay, Malcolm (O' Hara Township, Allegheny County, PA)

1980-01-01T23:59:59.000Z

475

Pumped-Storage Planning and Evaluation Guide  

Science Conference Proceedings (OSTI)

Utilities now have an easy-to-use evaluation and costing methodology that allows users to better estimate pumped-storage potential. This guide will enable utilities to accurately screen potential sites to determine which candidates deserve more-detailed studies.

1989-12-15T23:59:59.000Z