摘要
Abstract
A trough solar collector system can provide a medium temperature heat source of 100～300℃.To study the influence of weather conditions on its exergy performance,this paper takes a trough solar collector system with a heat collection area of 15.3 m2 as an example to study the effects of weather,direct normal solar irradiance,and heat collector inlet fluid temperature on the collection efficiency and exergy efficiency of the system under four typical weather conditions(sunny,overcast,haze,and cloudy)in Jiaozuo area,Henan Province.The research results show that:1)Under four typical weather conditions,on sunny days,the trough solar collector system has the highest heat collection efficiency and exergy efficiency,with 53.0%and 50.7%,respectively;During haze weather,the heat collection efficiency and exergy efficiency of trough solar collectors are the lowest.2)The influence of direct normal solar irradiance and the inlet fluid temperature of the heat collector on the heat collection efficiency and exergy efficiency follows the same pattern.3)Before 10:00 am,both the heat collection efficiency and exergy efficiency showed an increasing trend.When the inlet fluid temperature of the heat collector is between 32.9 and 71.4℃,the heat collection efficiency and exergy efficiency of the trough solar collection system remained above 40%.关键词
槽式太阳能集热系统/法向太阳直接辐照度/集热效率/㶲效率Key words
trough solar collector system/direct normal solar irradiance/heat collection efficiency/exergy efficiency分类
能源科技
