Contrastive Analysis on the Property of Solar Air Collectors with Different Surface Shapes

Abstract

Addressing the issue of low efficiency of flat plate collectors, the purpose of this article is to offer remedial measures about the problem of low absorptivity of absorption plates. In the study, three types of absorption plates were analyzed, type-I is the basic flat plate, type-II is the V-shaped plate, and type-III is the sinusoidal corrugated absorption plate. Experimental research and simulation were conducted on light path on the absorption plate with them. The results indicate that the heat exchange area of the sinusoida-corrugated plate is the largest, which is 3.86 times of that of flat plate, the air temperature rise of the sinusoida-corrugated plate is the tallest among the three types under the same external environment, which is 7.66  than that of the type- I, and type- III has also the highest absorption rate, increasing by 10.78 % higher than that of flat plate. This can provide reference for studying the performance of different collector plates.