Experimental Study of Hybrid Photovoltaic-thermal Solar System

A new type of energy utilization way called hybrid photovoltaic-thermal solar system(PVT system),which can convert solar energy into both power and thermal energy at the same time,becomes much more popular recently.In view of this point,a hybrid experimental system for power and thermal performance of PVT is established in this paper,the relation between temperatures and relatively power efficiency is studied experimentally.The results indicate that,the PVT system can improve the power efficiency by 7% relatively under better condition of sun radiation and a lower temperature of circulating water.Meanwhile,the change of the water temperature in PVT system is analyzed and a method of how to keep a high level of power efficiency is proposed under a lower solar radiation and higher environmental temperature.