EXPERIMENTAL INVESTIGATION OF THE EXERGETIC EFFICIENCY OF AIR-HEATINGFLAT-PLATE SOLAR COLLECTOR WITH DISTORTED PLATES

In order to investigate the effects of new developments of solar colle ctor types on the exergetic efficiency of a solar collector with disto rted plates (nonparallel plates), an experimental set up was construct ed. This experimental apparatus consists of four types of air-heating flat-plate solar collectors, air circulation fan, measuring elements a nd other auxiliary equipment. The experiments were made in February, M arch, April, May, June and July in 1992 under the same ambient air con ditions for the four different collector types. The exergetic efficien cy of the collectors is calculated by using the experimental data, and comparisons are performed among the different collectors.