TY - JOUR
TI - Theoretical and experimental research on the thermal energy management system of direct expansion solar heating
AU - Yu Weifang
JN - Thermal Science
PY - 2023
VL - 27
IS - 2
SP - 991
EP - 998
PT - Article
AB - The author has established the experimental device of the direct expansion  solar heat pump system. In this device, the bare plate solar collector is  also used as a heat pump evaporator. Under the sunny weather in May, the  author conducted an experimental study on the heat pump system. The  experimental results show that during the whole experiment, the COP, and the  heat collection efficiency of the system reached 2.50-3.35 and 50.0-75.2%,  respectively. At the same time, the influence of solar irradiance,  condensation temperature and other parameters on the COP and heat collection  efficiency of the system is analyzed and discussed, so as to provide some  reference for the application of the system.