Performance study of a novel hybrid solar PV/T ground-source heat pump system

摘要

A new system based on solar photovoltaic/thermal-ground source heat pump (PV/T-GSHP) was proposed to solve the problems of energy shortage and high energy-consuming buildings in China. The operation performance of the PV/T-GSHP system in a demonstration project in Dalian of China was studied and energy saving performance was analyzed. The results show that this PV/T-GSHP system can reduce the temperature of photovoltaic/thermal modules as high as 10癈, and improve the efficiency of electricity production by 25%, simultaneously. And in heating season the average COP of the heat pump remains around 3. Then the model of the PV/T-GSHP system was established based on the Polysun software, the system parameters were optimized, followed by analyzing the technical and economic of the project. The optimization data and energy saving effect of this demonstration system can provide guidance for future related project.