回热器对低温空气制冷系统性能影响的实验研究

Experimental study on effect of recuperator on air cycle refrigeration system performance

中文关键词: 空气制冷系统  回热方案 除湿性能

英文关键词: air cycle refrigeration system  heat regenerating schemes  dehumidification performance

中文摘要:

      随着环保问题的日益突出,空气制冷系统的理论和实验研究重新受到重视。通过对开式空气制冷系统的三种回热方案进行实验测试对比,分析了回热器对系统性能及除湿效果的影响。实验结果表明：与无回热的空气制冷系统相比,在相同的工况下,二级回热系统可大幅降低涡轮出口温度,最大降低约8.5℃,并可大幅降低涡轮进口的含湿量,最大降低约35%。同时一级回热系统和二级回热系统均可大幅增加系统的COP和制冷量,但一级回热器对涡轮进口含湿量的影响较小。

英文摘要:

      The performance of air cycle refrigeration system for three types of heat regenerating schemes was measured under different inlet pressures, and the effefct of the recuperator on the performance and dehumidification was also analyzed. The experimental results indicate that under the same conditions, the outlet temperature and the inlet humidity ratio of the turbine in the double recuperator system are much lower than those in the no recuperator system, and they can decrease by 8.5℃ and 35%, respectively. The capacity of the single and double recuperator system is much larger than that of the no recuperator system, but the first recuperator contributes slightly to the inlet humidity ratio.