摘要
针对中国北方冬季气温偏低的特点,设计了相变蓄热蒸发型空气源热泵。相变蓄热蒸发型空气源热泵,利用相变技术,可以有效地解决中国北方低温时的供暖问题。以相变蓄热蒸发型空气源热泵为研究对象,在人工环境模拟室中模拟不同的环境温度,分别使用R417A和R22进行实验。实验数据表明,R417A替代R22时,系统无需更换润滑油,各工况下系统运行稳定,R417A的排气温度和排气压力均低于R22,有利于系统的安全运行。R417A的制热量和COP均小于R22。可见R417A可以替代R22作为相变蓄热蒸发型空气源热泵的制冷剂,但对于新建热泵机组,要达到原有供热效果需要增加蒸发器和冷凝器的换热面积。
For the characteristics of low temperature in winter in northern China,a new air source heat pump(ASHP)system with phase change heat storage evaporator has been developed.The ASHP system with phase change heat storage evaporator,using phase change technology,can effectively solve the heating problem in North China at low temperature.The ASHP system with phase change heat storage evaporator is taken as the research object,and different environment temperature was simulated in the artificial environment simulation room.Experiments were carried out by using R417 A and R^22 respectively.The experimental results showed that when R^22 was replaced by R417 A,the system didn’t need to replace lubricating oil.Under various working conditions,the system ran stably.The exhaust temperature and exhaust pressure of R417 A were all lower than of R^22,which were conducive to the safe operation of the system.The heating capacity and COP of R417 A were less than that of R^22.Therefore,R417 A can replace R^22 as a refrigerant for the ASHP system with phase change heat storage evaporator.However,for new heat pump units,to achieve the original heating effect,it is necessary to increase the heat transfer area of evaporator and condenser.
作者
李小刚
马素霞
闫泽滨
王玉坤
潘永坤
LI Xiao-gang;MA Su-xia;YAN Ze-bin;WANG Yu-kun;PAN Yong-kun(Department of Thermal Engineering,Taiyuan University of Technology,Taiyuan 030024,China)
出处
《科学技术与工程》
北大核心
2019年第9期214-218,共5页
Science Technology and Engineering
关键词
空气源热泵
低温供暖
相变蓄热
R417A
air source heat pump
low temperature heating
phase change heat storage
R417A
