蓄能互联热泵系统制冷剂的选择  

Selection of refrigerant for energy storage type interconnected heat pump system

作　　者：高翔[1] 张文科 方肇洪 侯幸 张鑫[1] Gao Xiang;Zhang Wenke;Fang Zhaohong;Hou Xing;Zhang Xin(Shandong Jianzhu University;Shandong Zhongrui New Energy Technology Co.,Ltd.)

机构地区：[1]山东建筑大学 [2]山东中瑞新能源科技有限公司

出　　处：《制冷与空调》2019年第12期93-98,共6页Refrigeration and Air-Conditioning

摘　　要：蓄能互联热泵利用相变蓄能装置将空气源热泵和水源热泵连接,能够将空气源热泵的性能系数保持在合理范围(3.0~3.5),且避免单一水源热泵的限制条件。本文在环境温度-25^-5℃,空气源侧制取水温度15℃,17℃和19℃以及末端供水温度45℃,50℃和55℃的工况下,研究蓄能互联热泵采用不同制冷剂时的性能系数,探索制冷剂压缩比变化的规律。结果表明:环境温度在-20^-5℃时,空气源热泵侧和水源热泵侧采用R410A/R134a组合或R404A/R134a组合,末端供水温度为55℃,整个系统的COP较高,在3.5以上;随着环境温度的升高,采用R410A/R134a组合的蓄能系统,COP有增大更快的趋势;而空气源侧制取的低温水温度对系统COP影响较小。The energy storage type interconnected heat pump,which connects the air source heat pump with the water source heat pump by a phase change energy storage equipment,can not only keep the coefficient of performance(COP)of air source heat pump in a reasonable range(3.0-3.5),but also avoid the limitation of single water source heat pump.It s assumed that the ambient temperature is from-25℃to-5℃,the water temperatures of air source side are 15℃,17℃and 19℃,and the supply water temperatures at the terminal are 45℃,50℃and 55℃respectively,and both the COP of energy storage type interconnected heat pump system and the change law of pressure ratio using different refrigerant are investigated.The results show that at the ambient temperature between-20℃and-5℃,when R410A/R134a or R404A/R134a are used for the refrigerants of air source side and the water source side,the supply water temperature at the terminal is 55℃,and the COP of the whole system is higher,which can reach above 3.5.With the increase of ambient temperature,the COP of the energy storage type system with R410A/R134a increases rapider.However,the temperature of low-temperature water from air source side has a little effect on the COP of the system.

关 键 词：互联热泵 蓄能装置 空气源热泵 水源热泵 制冷剂 性能系数 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]