一种热泵循环工质与R22的可用能对比分析

COMPARISON ANALYSIS OF EXERGY BETWEEN A NOVEL MIXTURE AND R22

目前在制冷、热泵系统中广泛使用的循环工质R22由于具有较大的GWP值和ODP值,所以终将被淘汰。针对工质R22的替代研究,本文提出了一种新型的非共沸混合工质R290／R600a／R123(50％／10％／40％),并在小型试验台上做了热泵工况的试验分析。将该工质在各工况下的试验结论与相应工况下R22的试验结论进行对比分析后发现该工质的可用能分析优于R22的研究结论。

At present, the working fluid R22 is often used in refrigeration and heat pump systems, but it will be replaced in next several years because its ozone-depletion potential (ODP) and global-warming potential (GWP) are very high. In order to seek some novel working fluids, many experiments were done on a small heat pump system and a novel mixture R290/R600a/R123 (50%/10%/40%) and R22 were used respectively. Basing on lots of data from different working conditions, the novel mixture is better than the R22 in exergy loss.