摘要
通过引入统计学中的”距离”概念和相似性评价方法,有效地提高了替代工质研究中替代物初选过程的工作效率并避免遗漏。选取临界压力Pc、临界温度Tc和正常沸点Tb作为特征参数,进行了R22、R12、R11、R13和R114替代工质的初选,结果中不仅包含了全部已公开的各类替代物,还给出了一些新的醚类替代物。研究还表明,同分异构体之间具有很强的相似性,R12与R22间的相似性也较好。
To improve primary alternatives search while avoiding omissions, the concept of distance and the similarity assessment method in statistics were introduced into the research on substitutes for CFCs and HCFCs as working fluids in energy conversion systems. In this work, the critical pressure Pc、the critical temperature Tc and the normal boiling temperature Tb were selected as the characteristic parameters to judge the similarities of various substitutes for R22, R12, R11, R13, and R114, respectively. The results on possible alternatives given by this work not only involve all of the substitutes already proposed in references, but also indicate some new ones of ether. It is also observed that there are strong resemblances existed among the isomeric compounds and between R12 and R22.
出处
《制冷学报》
CAS
CSCD
北大核心
2004年第4期43-48,共6页
Journal of Refrigeration
