Improving the performance of solar air heater using a new model of V‐corrugated absorber plate having perforations jets

Abstract

An experimental investigation on the performance of a solar air heater (SAH) system has been performed using a new model of v-corrugated absorber plate having perforations jets. The effectiveness of new model has been compared with the conventional v-corrugated absorber plate under identical operating conditions to display the effectiveness of new model. The new collector has been referred to Model-1, whereas the conventional model has been referred to Model-2. The experimentations have been conducted in December 2020. The results demonstrate that the performance of Model-1 is considerably higher than Model-2 by 9%, 11%, and 11.5% for the air mass flowrates 0.01, 0.015, and 0.02 kg/s, respectively. As mass flowrate is increased, the performances of both models have increased, where the highest efficiencies of Model-1 and Model-2 have been found 84.5% and 73%, respectively. A substantial difference in temperature has been found in Model-1 as compared to the rest model. Regardless of the air velocity values, the maximum outlet temperatures have been found in Model-1, whereas the peak plate temperatures have been observed in Model-2. The improvement in the performance of Model-1 confirms that the utilize of perforations jets v-corrugated absorber plate has an extreme action on the rate of heat transfer.