[关键词]
[摘要]
为实现太阳能高效利用,将相变储能材料(PCM)、空气式太阳能集热器和热泵系统结合,设计了空气式PCM太阳能热泵供暖系统,并对该系统的运行模式进行研究和理论分析。结果表明,在四种不同运行工况下,室内平均温度均可维持在298 K,可满足采暖需求;平均太阳能辐射强度为556.7 W/m2时,集热器可为室内持续供暖10 h,日平均集热效率可达36.4%;相变储能芯储存的热量可维持热泵高效运行4 h,热泵的平均能效比(COP)可达3.1;阴雨天热泵可提供室内总供热量的92.6%,平均COP为2.6。系统整体运行稳定,节能效果显著。
[Key word]
[Abstract]
In order to realize the maximized utilization of solar energy,the air-type PCM solar heat pump heating system was designed by combining phase change material (PCM),airtype solar collector and heat pump,and the different operation modes of the system were studied and theoretically analyzed.The experimental results show that the system can maintain the indoor average temperature at 298 K under the four operating conditions,and it can meet the heating demands well.When the average solar radiation intensity is 556.7 W·m-2,the collector can provide heat for the room continuously for 10 hours,and the daily average heat collection efficiency can reach 36.4%.The heat stored by PCM energy storage core can keep the heat pump running efficiently for 4 hours with the average COP up to 3.1.At rainy day,the heat pump can provide 92.6% of total indoor heat supply with an average COP of 2.6.The overall operation of the system is very efficient and stable,and the energy saving effect is remarkable.
[中图分类号]
TK519
[基金项目]
上海市联盟计划(LM201826,LM201855)