提高空气源热泵低温性能的实验研究
Experimental research for improving performance of air-source heat pumps in low ambient temperature
摘要：
针对空气源热泵低温性能欠佳的原因，对原型机进行了改进，增加了旁通毛细管和换热器两个部分，通过实验测试，对比了改造前后系统的制热量、能效比以及吸排气压力，结果表明空气源热泵的低温性能有了一定的提高。
关键词：空气源热泵 旁通毛细管 气液分离器 换热器 低温性能
Abstract：
Viewing the performance decrease of air-source heat pumps in low ambient temperature, reforms the prototype machine by adding the two parts of auxiliary capillary and heat exchanger. Compares by testing the heat output, energy efficiency ratio and suction/discharge pressure with those of the prototype machine. The results show that the performance of air-source heat pump in low ambient temperature is improved to some extent.
Keywords:air-source heat pump, auxiliary capillary, gas-liquid separator, heat exchanger, low ambient temperature performance