Experimental study of the double-pass solar air collector with staggered fins

The purpose of this study is to evaluate the thermal performance of a forced-convective double-pass solar air collector with staggered fins. The efficiency of the solar collector has been examined by changing the intensity of solar radiation and the mass flow rate. Beside, several important relationships between the design and operating conditions have been obtained. The results of this study suggest firstly, the double-pass solar collector with staggered fins has efficiency of more than 75% at a mass flow rate 0.083 kg/s and solar radiation at 788 W/m2. Secondly, the efficiency of solar collector is significant depending on the mass flow rate and solar radiation. The efficiency is increased proportional to mass flow rate and solar radiation. At the solar radiation at 423W/m2 to 788W/m2 increase efficiency is about 25%. At a mass flow rate varies from 0.04 kg/s to 0.083 kg/s, the efficiency increase is about 40%.

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