Design and performance evaluation of a solar water pumping system: A case study

This paper is concerned to design of direct coupled solar water pumping system without using batteries. Technical, economic and environmental parameters are considered in the design procedures. Performance evaluation of solar water pumping system is studied using three expressions; yield factor (YF), wire to water energy efficiency (WWEE) and system performance index (SPI). A full monitoring system is presented to evaluate the operation of the system. The proposed monitoring system measures a real time data of system parameters. A case study of 45 kWp solar water pumping system in El Wahat, Egypt is studied. The recorded data using the monitoring system shows that the average daily water volume was 788 m3 over one year. The maximum output water volume was 887 m3 in summer with yield factor 5 (kWh/kWp/day).

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