Abstract:In order to study the influence of different environmental parameters on the thermal performance of solar energy heating and refrigeration combined cycle units, a test device was constructed, a unit model was established, and the thermal analysis of the units was completed. The refrigeration coefficient, heating efficiency and efficiency of the unit are taken as the evaluation indexes of the unit's thermal performance. The model of the unit is verified from three aspects: evaporation pressure, condensation temperature and solar radiation. The influence on the thermal performance of the unit is studied respectively. The results show that with the increasing of evaporation pressure, the thermal efficiency, efficiency and refrigeration coefficient of the unit are all increasing, and the thermal efficiency, efficiency and refrigeration coefficient of the unit are decreased when the condensing temperature increases. With the increase of solar radiation, the refrigeration coefficient, thermal efficiency and efficiency of the unit are all increased, and the thermodynamic performance index is increased to a certain extent instead of decreasing the solar radiation. The experimental results show that different environmental parameters have a certain influence on the thermal performance of solar heating and refrigeration combined cycle units, and the performance is higher.