摘要
R1233zd(E)是一种环保、无毒、不可燃的新型制冷剂,本文将R32与R1233zd(E)混合用于替代热泵热水器传统制冷剂R22。在热泵热水器名义工况下,基于换热器中传热窄点温差的限制,对R32/R1233zd(E)二元混合制冷剂在不同质量配比下热泵循环系统的热力学特性进行计算分析。结果表明,相同工作条件下,混合工质在计算配比范围内COPh均大于R22系统,并存在两个峰值,分别对应于质量配比分别为90/10和46/54,R32/R1233zd(E)的最优质量配比为90/10。在最优配比下,系统制热系数COPh值为4.793分别比纯质制冷剂R22、R32系统的COPh增加10.2%、6.6%。新型混合制冷剂R32/R1233zd(E)很有潜力成为新的热泵替代制冷剂。
R1233zd （E） is an environmentally friendly, non-toxic, non-flammable refrigerant. Binary mixtures of R32 and R1233zd （E） are proposed to replace the traditional R22 in the heat pump water heater system. In the normal condition of heat pump water heater, the thermodynamic performance of the system using various mass fraction of the mixture is theoretically analyzed and compared with conventional refrigerant R22 based on heat transfer pinch point in heat exchangers. Under the same operating conditions, results show that the COPh for mixed refrigerant is greater than R22 system in the calculation range, which have two peaks, the mass ratio are 90/10 and 46/54, and the optimal mass fraction ofR32/R1233zd （E） is 90/10. With the optimum mass fraction, the optimal COPh of mixture is 4.793, increased by 10.2% compared to that of R22 system, by 6.6% compared to that of R32 system. The new mixture of R32/R1233zd （E） is promising to be new alternative refrigerant in heat pump system.
出处
《建筑热能通风空调》
2016年第9期34-38,共5页
Building Energy & Environment
基金
国家自然科学基金(No.51176207)
