The Collector Matching Analysis of Solar Cooling System Based on Three Kinds of Woking Medium

Abstract

Solar collector is an important part of solar cooling system, which provides heat source for the generator. With the help of Aspen Plus software, the three working fluid systems of LiBr/H2O, NH3/H2O, and R134a/DMF are established. And this paper analyzes the corresponding collector type for the three systems.We find that When the condensing-temperature is 38℃and the range of dilute solution concentration is 54%~56%, the LiBr/H2O system can choose low solar thermal collector. When the condensing-temperature is up to 42℃, High/Medium solar thermal collector is appropriate for LiBr/H2O. NH3/H2O system can only choose High/Medium solar thermal collector. And R134a/DMF system can choose low solar thermal collector when deflated range is between 0.17 to 0.3; when deflated range is higher than 0.3, R134a/DMF system can choose high solar thermal collector.