一种热泵循环工质与R22的可用能对比分析

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。

COMPARISON ANALYSIS OF EXERGY BETWEEN A NOVEL MIXTURE AND R22

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.