The Study on the Performance of Solar Photovoltaic and Air Source Heat Pump Composite Building Energy Supply System

Abstract

A new type solar photovoltaic and air source heat pump composite building energy supply system was designed for the purpose of saving energy. The system can realize a variety of functions needed for building, including the annual power supply, heating in winter, as well as cooling in summer. 1HP rotor compressor is used in the heat pump system, and the other parts of the heat pump match the 1HP heat pump. In this paper, the operation mode of PV/T and dual heat source heat pump operating at the same time in winter was experimental studies and the performance of the system was analyzed. Results shows that in the environmental conditions of the average temperature of 4.3℃and the average irradiance of 644 W/m2, the maximum of generating efficiency reaches 15.3%, and the maximum of generated power reaches 827W, and the average generating efficiency is 12.1%, and the average of heat-collecting efficiency is 38.8%, and the average of comprehensive efficiency of PV/T system is 50.9%, and instantaneous COP of the heat pump changes from 2.3 to 3.0, and the average COP is 2.6.