摘要
Abstract
In order to improve the operational performance of traditional PV power generation systems,this paper proposes a PV/T hybrid air source heat pump system.The working principle and operating mode of the system are introduced,and the comprehensive performance evaluation method of the system is studied.Then,a simulation model of the system is established using TRNSYS instantaneous system simulation software.Taking Chongqing area as an example,the surface temperature of modules,thermal efficiency,electrical efficiency,exergy efficiency,and primary energy saving efficiency of the PV/T hybrid air source heat pump system and PV power generation system are compared and analyzed.The research results show that:1)The variation trend of surface temperature of PV/T modules is relatively consistent with that of PV modules surface temperature,difference between the average of the two is 13℃,indicating that the PV/T hybrid air source heat pump system can effectively reduce the surface temperature of PV modules.2)The average electrical efficiency of PV/T hybrid air source heat pump system and PV power generation system are 11.40%and 9.86%,respectively,which is a relative improvement of 15.62%,indicating that PV/T hybrid air source heat pump system can obtain more electrical energy.3)The average exergy efficiency of PV/T hybrid air source heat pump system and PV power generation system is 11.73%and 8.94%,respectively,which is a relative improvement of 31.21%,indicating that PV/T hybrid air source heat pump system can obtain more available energy.4)The average primary energy saving efficiency of the PV/T hybrid air source heat pump system is 50.94%,and its overall trend of change is similar to that of thermal efficiency.关键词
光伏/光热一体化/空气源热泵/电效率/㶲效率/一次能源节约效率/综合性能评价Key words
PV/T integration/air source heat pump/electrical efficiency/exergy efficiency/primary energy saving efficiency/comprehensive performance evaluation分类
能源科技
