Energy and Exergy Analysis of Dual Channel Solar Air Collector with Perforating “V” Corrugated Absorber Plate

Abstract

This paper, an experimental study was carriedout on a dual channel with perforating “V” corrugated absorberthe plate of solar air collector which the air flows both in upperchannel and lower channel of the absorber plate for increasingheat transfer coefficient and improving thermal performance. Theresults of experimental procedures for dual channel withperforating “V” corrugated absorber plate of solar collector werecompared with the flat plate dual channel of the solar collector.Experimental calculations had been performed under Baghdad(33.34° North latitude, 44.4° East longitude) climatic conditions atdifferent values of mass flow rates 0.021 kg/s, 0.027 kg/s and0.32 kg/s. The results showed that the dual channel withperforating “V” corrugated absorber plate of solar collector isfound to perform more efficiently than the flat plate dual channelof the solar collector with an increased 39% in thermal efficiency. Then,it showed that efficiency increases with increasing mass flowrates. Also, it showed that the heat removal factor of the dualchannel with perforating “V” corrugated absorber plate of solarthe collector is 36% more than the flat plate dual channel of solarcollector. At the last part of the study, the exergy relations werederived for both collectors. The results of this part showed that theflat plate dual channel of solar collector is having the largestirreversibility (exergy loss) and the dual channel with perforating“V” corrugated absorber plate of solar collector is having agreatest exergetic efficiency.