Experimental investigations on thermal performance of solar air heater with different absorber plates.

The use of special kind of arrangement absorber plate is an effective and economic method to improve the thermal performance of a solar air heater. In this paper, the thermal performance of a solar air heater was experimentally investigated with different absorber plates with a mass flow rate of 20 kg/h and 25 kg/h with different arrangements of absorber plates such as glass plates and galvanized iron (GI) sheet varying mass flow rates of air. It was observed that thermal efficiency was increased by 9.4% while using the glass plate absorber compared to the galvanized iron (GI) sheet absorber plate. [ABSTRACT FROM AUTHOR]