Study on the system performance and exergy evaluation of a solar thermal utilization system of over 30 years using in a shelter gymnasium

Abstract

In order to realize ZEB and ZWB in shelter gymnasiums, the performance, operational status, and problems of the solar thermal utilization system that has been used in a gymnasium for more than 30 years were investigated and studied. The annual solar thermal collection efficiency was about 47%, confirming that the performance of the solar thermal collection has not declined. In the exergy consumption process, it was found that the solar thermal utilization system with boiler consumes about 40% less exergy than the boiler alone.