Research on the Design and Application of ‘Solar+Air’ Energy Hot Water System in University

Under the background of the strategic goal of ‘ 3060 double carbon ‘, it is urgent for renewable energy to replace traditional energy for energy supply<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">[1]</sup>. This paper takes the dormitory building of a university in Jinan as the research object, expounds the working principle of the ‘ solar energy + air energy ‘ dual energy hot water system, and calculates the collector area, the head and flow of the circulating pump, and the heating capacity of the air source heat pump. At the same time, the energy saving benefit of the system is calculated and analyzed. The results show that the application of the system in college dormitories has a good energy saving and environmental protection effect.