Performance Analysis of Solar Water Pumping System at Nawabshah
Performance of solar photovoltaic water pumping units relies on available solar radiations of the area, geographical conditions and system configurations. This study was conducted to analyze the influence of solar radiation, motor speed and water head on water discharge of a solar water pumping systems (SWPS). For that, a SWPS was installed, configured and its performance was examined at Sadiqabad Colony, Nawabshah for two consecutive months from 12:00 to 13:00 hours. Light meter, Model- HDS 2302.0, Delta OHM was used for measurement of global solar radiation, PROVA-RM 1000 tachometer for motor pump speed and stopwatch for recording of elapsed time for filling up of 30 liters capacity water can. Results revealed that the average minimum solar radiations were 776 W/m2 at 12:00 hours in the month of May and maximum 902 W/m2 at 13:00 hours in the month of June during experimental work. The maximum average motor speed and flow rate were noted at L1 and minimum at L4, whereas, the maximum time taken by the solar water pumping system for filling up of water can at L4 and minimum at L1. The time taken to provide one liter of water was found inversely proportional with motor speed and directly with the water head.
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