摘要
以三氟二氯乙烷（R123）为热泵工质，空气为换热介质，通过调节循环风速、辅助电加热和节流阀的开度，测定不同条件下的蒸发温度、冷凝温度和压缩机功率的冷量的有效利用率ER及COP。结果表明：在蒸发温度45℃、冷凝温度85℃、风速6m／s条件下，COP达到最大值3．3。在蒸发温度30—45℃、冷凝温度70～80℃，COP维持在2以上；在实验温度范围内，％最小为18．2％，蒸发温度23℃、冷凝温度80℃、风速2m／s时‰达到最大值71．5％。
A heat pump using R123 as refrigerant and normal air as heat transfer medium, testing cooling capac- ity effective utilization rate （ER） under different e auxiliary heating, expansion valve opening degree vaporation temperature, condensing temperature and the air flow, by changing air flow, auxiliary electric heating and expansion valve opening degree. The final results showed the highest COP of the heat pump is 3.3 when the evaporation temperature is 45 ℃, the condensing temperature is 85 ℃ and the air speed is 6m/s, The COP of the heat pump can reach 2 at the range 30 ℃ to 45 ℃ of evaporating temperature and the range 70 ℃ to 80 ℃ of condensing temperature. The minimum value of ER is 18.2% and the maximum value of ER is 71.5% under evaporation temperature of 23 ℃, condensing temperature of 80℃ and air speed of 2 m/s.
出处
《化工时刊》
CAS
2014年第6期15-17,25,共4页
Chemical Industry Times
关键词
热泵
COP
蒸发器
蒸发器冷量有效利用率ER
heat pump Coefficient of Performance （COP） evaporation tempERature cooling capacity effective utilization rate （ ER ）.
