Effect of seasonal variation on the performance of a solar water pump

A brief description of the operation and analysis of a solar water pump is given. The performance of the pump is studied for various solar radiation intensities and ambient temperatures, so that a clear picture on the year-round performance of the pump emerges. The prediction reveals that the number of cycles and the overall efficiency increases with an increase in solar radiation intensity, whereas, with the increase in ambient temperature, the number of cycles initially increases with the temperature up to 30°C and decreases thereafter. © Ambient Press Limited 1997.