Energy Savings Potential from Energy-conserving Irrigation Systems PDF Download
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Languages : en
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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.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
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.
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Category : Agricultural engineering
Languages : en
Pages : 44
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Book Description
Author:
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Category :
Languages : en
Pages :
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Book Description
A comparative analysis is presented of the levelized costs of selected irrigation systems, with an emphasis on the costs and benefits of energy savings. The net economic benefits are evaluated, measured as energy cost savings minus additional capital and operating costs, of some energy-conserving systems. Energy use in irrigation and descriptions of both the conventional and the energy-saving technologies involved in the analysis are discussed. The approach used in the analysis is outlined, and comparative analysis results are discussed. Detailed cost information is presented by state. (LEW).
Author: United States. Soil Conservation Service
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ISBN:
Category : Energy conservation
Languages : en
Pages : 40
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Author:
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Category : Power resources
Languages : en
Pages : 562
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Author: United States. General Accounting Office
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Category : Agriculture
Languages : en
Pages : 52
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Author: Ronald L. Ritschard
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Category : Droughts
Languages : en
Pages : 76
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Author:
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ISBN:
Category : Power resources
Languages : en
Pages : 826
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Book Description
Author: Melvin D. Skold
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ISBN:
Category : Energy conservation
Languages : en
Pages : 20
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Book Description
Author: Dilshad Brar
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ISBN:
Category : Irrigation
Languages : en
Pages : 156
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Book Description
The study introduces a novel approach to lower the operating pivot point pressure by varying the motor speed with the help of variable frequency drive (VFD) in contrast to the commonly used fixed speed approach. By varying the speed of motor, the required minimum pivot point pressure can be provided at any required flow rate. This was investigated through a GIS-assisted simulation on 100 randomly selected pivots located in 10 Nebraska counties using high resolution Digital Elevation Model (DEM) datasets. Center pivot irrigation systems are usually equipped with corner watering attachments like end guns and corner extensions to irrigate additional area at the corners of the field. Two different types of corner watering equipment i.e. end gun and corner extension were involved in this study. Four different scenarios were taken into consideration 1) standard systems with seven towers and no corner watering attachment, 2) end gun attached at the end of center pivot system, 3) corner extension attached at end of center pivot system, and 4) center pivot system equipped with corner extension and end gun. Two different approaches were used to operate the center pivot systems 1) at constant motor speed with fixed design pivot point pressure, 2) at varying motor speed according to the minimum required pivot point pressure. The varying topography as well as the shape of the pump performance curve at fixed motor speed were found to play a major role in energy conservation. The energy reductions obtained through varying speed approach, along with annual monetary savings were calculated for all the study counties under all the scenarios. The major factors contributing to maximum energy savings and annual returns were large topographical changes, shape of pump performance curve, long irrigation operating hours, and high electricity costs. Cedar County showed the maximum average energy reductions by using varying speed approach whereas Hamilton and Butler County expressed minimum energy reductions in all the scenarios. Economic analysis was conducted for the potential investment in VFDs along with the average payback periods for the cost of VFD in each county. Overall, the suggested use of the Variable Frequency Drive has proven to provide savings in terms of energy conservation from the analysis performed in the study. However, there are emerging concerns about the cost-effectiveness of the approach. It is expected that the technology will receive high adoption, specifically in irrigation sector, from producers, research community and industry, if manufacturers are able to address economic concerns of the end user. This study provides a holistic approach in quantifying the energy savings over a large study area, which provides the producers, water resource managers, planners, and decision and policy makers, a clear picture of the widely variable anticipated benefits when aiming at adoption of a VFD.
