Regional applicability of photovoltaic-thermal combined dual-source heat pump systems

In this paper, a simulation model of the photovoltaic-thermal combined dual-source heat pump (PV/T-DSHP) system is established by TRNSYS software. Lhasa and Shanghai are selected to simulate and analyse the operational characteristics of the PV/T-DSHP system. A comparative analysis is conducted on the coefficient of performance of the photovoltaic combined air-source heat pump (PV-ASHP) system and the photovoltaic-thermal combined water-source heat pump (PV/T-WSHP) system under different outdoor meteorological conditions (ambient temperature, solar irradiance). The results show that the average system coefficient of performance (COPs) during the heating season in Lhasa and Shanghai are 4.23 and 3.34, respectively. In the areas with general and abundant solar energy resources, the PV/T-WSHP system has performance advantages over the PV-ASHP system when operating in the optimal operating area determined by ambient temperature and solar irradiance.