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(R)Evolution of Refrigerants
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2020-07-02 , DOI: 10.1021/acs.jced.0c00338
Mark O McLinden 1 , Marcia L Huber 1
Affiliation  

As we enter the “fourth generation” of refrigerants, we consider the evolution of refrigerant molecules, the ever-changing constraints and regulations that have driven the need to consider new molecules, and the advancements in the tools and property models used to identify new molecules and design equipment using them. These separate aspects are intimately intertwined and have been in more-or-less continuous development since the earliest days of mechanical refrigeration, even if sometimes out-of-sight of the mainstream refrigeration industry. We highlight three separate, comprehensive searches for new refrigerants—in the 1920s, the 1980s, and the 2010s—that sometimes identified new molecules, but more often, validated alternatives already under consideration. A recurrent theme is that there is little that is truly new. Most of the “new” refrigerants, from R-12 in the 1930s to R-1234yf in the early 2000s, were reported in the chemical literature decades before they were considered as refrigerants. The search for new refrigerants continued through the 1990s even as the hydrofluorocarbons (HFCs) were becoming the dominant refrigerants in commercial use. This included a return to several long-known natural refrigerants. Finally, we review the evolution of the NIST REFPROP database for the calculation of refrigerant properties.

中文翻译:

(R)制冷剂的演变

当我们进入“第四代”制冷剂时,我们会考虑制冷剂分子的演变、推动考虑新分子需求的不断变化的约束和法规,以及用于识别新分子的工具和属性模型的进步并使用它们设计设备。这些独立的方面紧密地交织在一起,并且自机械制冷的早期以来一直在或多或少地持续发展,即使有时不在主流制冷行业的视线范围内。我们重点介绍了 1920 年代、1980 年代和 2010 年代对新制冷剂的三种单独、全面的搜索,这些搜索有时会发现新分子,但更常见的是已经在考虑中的经过验证的替代品。一个反复出现的主题是,没有什么是真正新的。大多数“新”制冷剂,从 1930 年代的 R-12 到 2000 年代初的 R-1234yf,在被视为制冷剂的几十年前就已在化学文献中报道。直到 1990 年代,对新制冷剂的探索仍在继续,尽管氢氟烃 (HFC) 正在成为商业用途的主要制冷剂。这包括回归几种久负盛名的天然制冷剂。最后,我们回顾了用于计算制冷剂特性的 NIST REFPROP 数据库的演变。这包括回归几种久负盛名的天然制冷剂。最后,我们回顾了用于计算制冷剂特性的 NIST REFPROP 数据库的演变。这包括回归几种久负盛名的天然制冷剂。最后,我们回顾了用于计算制冷剂特性的 NIST REFPROP 数据库的演变。
更新日期:2020-09-10
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