Study of design and operation mismatch effect on classic sprinkler systems efficiency

Document Type : Research Paper

Authors

Imam Khomeini International University

Abstract

Development of modern irrigation systems is one of the key solutions for improving irrigation efficiency, crop yield and agricultural water productivity. Usually, Irrigation system operation dose not match with design stage plane. In this study, effects of six type of sprinklers arrangement include proposed arrangement and 5 usual arrangements in farmers operation on Christiansen uniformity coefficient (CU), uniformity distribution (DU), actual efficiency of low quarter (AELQ), electromotor power (P) and pumping efficiency was evaluated. Results showed that sprinkler arrangements mishmash has significant effect on system efficiency, energy consumption. Irrigation pump efficiency in the operation mode based on the planned arrangement of sprinklers was 72 % and in some usual arrangements was 52 % .The Christiansen uniformity coefficient (CU) was ranged from 78.6 % to 44.8 % in various sprinkler arrangements. This study shows the importance of education in proper operation of sprinkler irrigation systems in order to increase irrigation efficiency, reduce water losses, improvement of crop yield and reduce of energy costs. Also, irrigation system designers should consider operation conditions and spatially operation easiness in system design stage.

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