低温辐射采暖毛细管空调系统太阳能贡献率研究

STUDY ON CONTRIBUTION RATE OF SOLAR ENERGY IN LOW TEMPERATURE RADIATION HEATING CAPILLARY AIR CONDITIONING SYSTEM

以平板型太阳能集热系统为主要热源,空气源热泵(ASHP)为辅助热源,毛细管网为末端装置,设计出一种新型双热源毛细管低温辐射采暖系统。在中国芜湖地区冬季气象条件下,通过实验和模拟分析研究该系统太阳能贡献率与供水温度的关系。结果表明:在冬季较充足的太阳辐照度(489.5~565.2 W/m2)下,当供水温度分别为25、30、35℃时,太阳能采暖贡献率分别达到45.0%、42.5%、39.4%,系统运行1 d的日节电率达到21.3%、19.6%、18.7%,室内同时满足舒适性要求。

A new type of dual heat source capillary low temperature radiation heating system is designed. The flat solar collector is the main heating source,while the ASHP(air source heat pump)is the auxiliary heating source of system.The system terminal device is the capillary network. In the winter conditions of Wuhu area,the relationship between solar system contribution rate and water supply temperature was studied by experiment and simulation. The results show that the contribution rate of solar energy is 45%,42.5%,39.4% when the water supply temperature is 25 ℃,30 ℃ and35 ℃,respectively,under the condition of sufficient solar irradiance(489.5-565.2 W/m2),the system operating day saving rate reached 21.3%,19.6% and 18.7%,while indoor comfort requirements.