回热循环对航天器热泵系统性能影响研究

发布时间：2018-06-02 08:29

  本文选题：热泵 + 回热循环　； 参考：《低温与超导》2016年10期

【摘要】：为研究R12回热循环对航天器单级蒸汽压缩式热泵系统性能的影响,搭建了热泵性能测定实验装置,从排气温度、耗功量、制冷量及制冷系数等方面分析了回热循环对热泵系统性能的影响。结果表明:在有、无回热循环两种工况下,实验测得的排气温度、耗功量、制冷量、制冷系数均随量热器温度的升高而增大;同一量热器温度下,回热循环在提高系统制冷量的同时会增加压缩机耗功,引起排气温度升高,但制冷量的增长幅度大于压缩机耗功的增长幅度。当量热器内温度为16℃、20℃、24℃、28℃时,回热循环带来的制冷系数增长率分别为50%、39.6%、32.7%、27.6%。因此R12回热循环对提高系统制冷系数是有效的。在此基础上,基于Aspen Plus软件建立了实验流程模型,采用NRTL-RK物性方法对有、无回热热泵循环进行模拟计算。模拟结果与实验结果两者间误差较小,说明软件模拟实际热泵流程的可靠性较高,今后可进一步利用Aspen Plus软件作热泵系统性能的深入研究。
[Abstract]:In order to study the effect of R12 reheat cycle on the performance of single-stage steam compression heat pump system of spacecraft, an experimental device for measuring the performance of heat pump was set up, which was based on exhaust temperature and power consumption. The effect of regenerative cycle on the performance of heat pump system is analyzed in terms of refrigerating capacity and refrigeration coefficient. The results show that the exhaust temperature, power consumption and refrigeration coefficient are increased with the increase of the calorimeter temperature under the two conditions of no regenerative cycle, and at the same calorimeter temperature, The regenerative cycle not only increases the cooling capacity of the system, but also increases the power consumption of the compressor, which leads to the increase of the exhaust temperature, but the increase of the refrigerating capacity is larger than the increase of the power consumption of the compressor. When the temperature in the calorimeter is 16 鈩，

本文编号：1968100