制冷技术Issue(2)：23-26,4.
以毛细管为节流装置的CO2小型热泵热水器实验研究
Experimental study on CO2 heat pump water heater with capillary tube as throttling device
摘要
Abstract
A trans-critical CO2 heat pump water heater with capillary tube as throttling device was presented. The changes of COP in different gas cooler inlet temperate were experimentally studied. The water temperature gradient along the gas cooler length was also investigated. The effects of refrigerant charge amount to high-pressure side＇s pressure in different environment temperature were introduced. We can conclude： the higher system COP can be obtained with capillary tube as throttling device; The gas cooler water temperature have maximum temperature rise in the inlet area. The system is sensitive to ambient temperature. In order to get the right high side pressure when the ambient temperature is lower, there needs more refrigerant than higher ambient temperature.关键词
CO2热泵热水器/毛细管节流/试验研究/COPKey words
CO2 heat pump water heater/Capillary tube throttling/Experimental study/COP分类
机械制造引用本文复制引用
鲍团卫,刘业凤,蔡操平..以毛细管为节流装置的CO2小型热泵热水器实验研究[J].制冷技术,2011,(2):23-26,4.基金项目
基金资助：上海市重点学科项目 （）
