自耦合相变蓄热热泵系统适应性研究  

Study on adaptability of self-coupling phase change heat storage heat pump system

作　　者：翟有蓉 刘雄[1] 韩希铭 王帆[1] Zhai Yourong;Liu Xiong;Han Ximing;Wang Fan(Xi'an University of Architecture and T echnology)

机构地区：[1]西安建筑科技大学

出　　处：《制冷与空调》2021年第12期8-13,35,共7页Refrigeration and Air-Conditioning

摘　　要：针对有峰谷电价的间歇供暖建筑(学校、办公楼等)提出一种自耦合相变蓄热热泵系统,该系统利用相变蓄热器,可以在空气源热泵和水源热泵运行模式之间自由切换;对其运行性能和经济性进行理论计算和分析,并与常规低环境温度空气源热泵系统进行对比。结果表明:室外温度越低,供水温度越高,自耦合相变蓄热热泵系统性能的提升幅度越大,单位供热量成本的降低幅度越大;当室外温度为-25℃,供水温度为55℃时,自耦合相变蓄热热泵系统的性能提升36.3%,COP大于1.7;相变温度对自耦合相变蓄热热泵系统性能影响不大。A self-coupling phase change heat storage heat pump system is proposed for intermittent heating buildings(schools, office buildings, etc.) with peak valley electricity prices. The system utilizes a phase change regenerator that can be free switching between the air source heat pump and water source heat pump running mode. The theoretical calculation and analysis of its operating performance and economy are conducted, and are compared with the conventional low temperature air source heat pump system. The results show that the lower the outdoor temperature, the higher the water supply temperature, and the larger the performance increase of the self-coupling phase change heat storage heat pump system is, and the larger the cost decrease of the heating capacity of the unit is;when the outdoor temperature is-25 ℃, the water supply temperature is 55 ℃, the performance of the self-coupling phase change heat storage heat pump system is increased by 36.3%, and COP is greater than 1.7;the performance of self-coupling phase change heat storage heat pump system is impacted less by the phase change temperature.

关 键 词：热泵 空气源 水源 间歇供暖 相变蓄热 性能系数 

分 类 号：TB6[一般工业技术—制冷工程]