混合工质Linde-Hampson制冷系统的实验研究

搭建了混合工质Linde-Hampson制冷系统,将4种工质R245fa/R600a/R508b/R14按照不同比例混合后进行实验研究。通过优化制冷剂组分得到不同配比下的最低运行温度,分析了最优配比下环境温度对系统运行性能的影响。结果表明:将4种工质按照不同配比进行混合,系统的最低运行温度范围在-45℃~-85℃之间。在环境温度35℃时,混合工质按比例R245fa:R600a:R508b:R14=0.45:0.3:0.18:0.07充注时,系统运行温度可达到-85℃,在此条件下,将环境温度从35℃降低到5℃,系统运行温度则从-85.5℃降低到-89.3℃。

The Experimental Research on Refrigerant Mixtures of a Linde-Hampson Refrigeration System

The performance of quaternionic refrigerant mixtures,R345fa/R600a/R508b/R14,in Linde-Hampson refrigeration cycle was experimentally investigated.To get the lowest operation temperature,the components of refrigerant mixtures were optimized.The influence of ambient temperature on system operational performance was analyzed.It is shown that the lowest system operation temperature could reach from-45℃ to-85℃ when mixing the four refrigerant components at different species ratio,.If the proportion of the refrigerant mixtures charged is R245fa:R600a:R508b:R14=0.45:0.3:0.18:0.07,the operating temperature of the system can reach-85℃ when the ambient temperature is 35℃.With the same refrigerant mixtures,the system temperature can reach-89.3℃ if the ambient temperature decreases from 35℃ to 5℃.