Scholarlink

<p>Due to the global warming issue, next-generation refrigerants having very low global warming potential (GWP) have been interesting increasingly. In order to develop high-profile refrigerants having GWP &lt; 10, several thermophysical quantities, for examples, density, heat capacity, viscosity, and thermal conductivity, etc., should be measured precisely. R1132a and CF<sub>3</sub>I are substances with low-GWP that are being considered as potential alternative refrigerants. In this study, the density of their mixture was measured at various temperatures (-40&#xa0;°C ~ 55&#xa0;°C) and pressures (~ 70&#xa0;bar) using a vibrating tube densimeter. The densities of R1132a and CF<sub>3</sub>I as single refrigerants were measured within the same temperature and pressure range, and these measurements were used to obtain the calibration coefficients for the vibrating tube densimeter. The measurement results for R1132a and CF<sub>3</sub>I as single refrigerants were compared with existing research and REFPROP results, with maximum deviations of 0.38% and 0.48%, respectively. Uncertainty evaluation was performed, and the maximum uncertainty was 0.6%. R1132a and CF<sub>3</sub>I were mixed in mass ratios of 75:25, 50:50, and 25:75, and the densities of these mixtures were measured at various temperatures and pressures. These measurement results, being the first of their kind globally, could aid in the development of equations of state for future alternative refrigerants.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Measurement of the Density of R1132a and CF3I Refrigerant Mixtures

  • 期刊论文

  • 发表日期：

    2026年2月24日

查看全文
  • Seok Hwan Lee,
  • Hyun-Seung Nam,
  • Woong Kang,
  • Sungjun Lee,
  • Suyong Kwon

摘要

Due to the global warming issue, next-generation refrigerants having very low global warming potential (GWP) have been interesting increasingly. In order to develop high-profile refrigerants having GWP < 10, several thermophysical quantities, for examples, density, heat capacity, viscosity, and thermal conductivity, etc., should be measured precisely. R1132a and CF3I are substances with low-GWP that are being considered as potential alternative refrigerants. In this study, the density of their mixture was measured at various temperatures (-40 °C ~ 55 °C) and pressures (~ 70 bar) using a vibrating tube densimeter. The densities of R1132a and CF3I as single refrigerants were measured within the same temperature and pressure range, and these measurements were used to obtain the calibration coefficients for the vibrating tube densimeter. The measurement results for R1132a and CF3I as single refrigerants were compared with existing research and REFPROP results, with maximum deviations of 0.38% and 0.48%, respectively. Uncertainty evaluation was performed, and the maximum uncertainty was 0.6%. R1132a and CF3I were mixed in mass ratios of 75:25, 50:50, and 25:75, and the densities of these mixtures were measured at various temperatures and pressures. These measurement results, being the first of their kind globally, could aid in the development of equations of state for future alternative refrigerants.