以HFC134a为制冷剂的喷射制冷实验研究

Experimental investigation on HFC134a ejector refrigeration system

设计并搭建了喷射制冷系统性能研究实验台,选取HFC134 a作为制冷剂进行了喷射制冷实验研究。研究表明,在测试工况范围内,喷射系统的COP随蒸发温度的升高而增加,随冷凝温度的升高呈现先是基本不变,后迅速降低的趋势,随发生温度的升高先升高后降低;另外,研究还发现系统的COP随着冷冻水流量的增加而增加。

This article set up a test - bed of performance study of ejector refrigeration system and experimental study on ejector refrigeration system using HFC134a as refrigerant. Research shows that the COP of ejector system will increase with the increasing of evaporator temperature, almost be invariant initially and then rapid decrease as the condenser temperature continues to increase, increase initially and then decrease as generator temperature continues to increase in the range of testing conditions. Moreover, the results show that the COP of ejector system will increase with the increasing of mass flow of cold water.