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1.清华大学热科学与动力工程教育部重点实验室 北京 100084
2. 大金氟化工(中国)有限公司 常熟 215522
戴晓业,男,助理研究员,清华大学热科学与动力工程教育部重点实验室,010-62794535,E-mail:daixy@mail.tsinghua.edu.cn。研究方向:制冷剂替代与物性测量。
收稿:2025-04-09,
修回:2025-04-25,
录用:2025-05-13,
网络出版:2025-11-07,
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刘健琛,王天浩,金霄等.R474A和R479A与冷冻机油的溶解特性实验研究[J].制冷学报,
Liu Jianchen,Wang Tianhao,Jin Xiao,et al.Experimental Research on the Dissolution Characteristics of R474A and R479A in Lubrication Oils[J].Journal of Refrigeration,
刘健琛,王天浩,金霄等.R474A和R479A与冷冻机油的溶解特性实验研究[J].制冷学报, DOI:10.12465/issn.0253-4339.20250409001. CSTR: XXXXX.XX.XXX.20250409001.
Liu Jianchen,Wang Tianhao,Jin Xiao,et al.Experimental Research on the Dissolution Characteristics of R474A and R479A in Lubrication Oils[J].Journal of Refrigeration, DOI:10.12465/issn.0253-4339.20250409001. CSTR: XXXXX.XX.XXX.20250409001.
新型车用空调制冷剂R474A与R479A在环保性、安全性、热力学性能等方面表现突出,但其与冷冻机油的溶解度特性尚未见相关研究。研究了R474A和R479A与冷冻机油RB68和RB100EV的溶解特性,在-20~20 ℃温度范围内,测试了R474A和R479A与RB68和RB100EV的临界互溶温度。在实验温度范围内,R474A与RB68和RB100EV溶液在不同含油率下始终互溶,临界互溶温度低于-20 ℃。R479A与2种冷冻机油均保持均相透明状态,临界互溶温度均在-20 ℃以下。表明2种车用制冷剂与冷冻机油在低温环境下仍有很好的互溶性,验证了作为严寒地区车用空调替代工质的适用性。基于等体积饱和法,在-20~60 ℃温度范围内测试了R474A与R479A在RB68、RB100EV中的溶解度,实验结果表明:2种新型制冷剂在RB68、RB100EV这2款冷冻机油中的溶解度随着压力的升高而增大,随着温度的升高而减小。在-20~50 ℃范围内,随着压力的升高,压力对溶解度的增强效应显著提升。
The novel refrigerants R474A and R479A have demonstrated superior performance in terms of environmental friendliness, safety, and thermodynamic properties. However, their solubility in refrigeration oils remains unknown. This study investigates the miscibility and solubility of R474A and R479A in the lubrication oils RB68 and RB100EV. The critical miscibility temperatures of R474A and R479A in RB68 and RB100EV were tested within a temperature range of -20 ℃ to 20 ℃. The findings reveal that within the experimental temperature range, R474A is miscible in RB68 and RB100EV solutions at different oil contents, and the critical miscibility temperature is lower than -20 ℃. R479A maintains a homogeneous transparent state in both refrigeration oils, with critical miscibility temperatures below -20 ℃. Based on the isochoric saturation method, the solubility of R474A and R479A in RB68 and RB100EV was tested within a temperature range of -20 ℃ to 60 ℃. The solubility of both novel refrigerants in RB68 and RB100EV increased with increasing pressure and decreased with increasing temperature. Based on these findings, for a given temperature range, the enhancing effect of pressure on solubility increases significantly as the pressure increase.
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