Perera Uthpala, Miyane Kozue, Sakoda Naoya, Thu Kyaw, Higashi Yukihiro
Research Center for Next Generation Refrigerant Properties (NEXT-RP), International Institute for Carbon-Neutral Energy Research (I2CNER), Kyushu University, Fukuoka, 819-0395 Japan.
Department of Mechanical Engineering, Kyushu University, Fukuoka, 819-0395 Japan.
Int J Thermophys. 2023;44(6):84. doi: 10.1007/s10765-023-03184-4. Epub 2023 Apr 17.
R-1132a is increasingly being considered as a low global warming potential component in alternative mixtures to R-23 in specialized low temperature and ultra-low temperature refrigeration systems. Though the thermodynamic properties of R-1132a were investigated in several studies up to 2018, reinvestigations have been carried out in recent years. In order to contribute toward these renewed measurements, the critical parameters of R-1132a were experimentally re-determined. Thirty-two vapor pressures from 240 K to the critical temperature, fifteen saturated vapor and six saturated liquid densities above 254 K and the properties in both the vapor phase (98 points) and liquid phase (34 points) from densities of 50 kg·m to 760 kg·m were also measured. Specific correlations for each of these properties were optimized and compared to previously available data from the literature. Additionally, the Peng-Robinson equation of state was used to represent the aforementioned properties and further utilized to determine the enthalpy and entropy of R-1132a.
The online version contains supplementary material available at 10.1007/s10765-023-03184-4.
在专业的低温和超低温制冷系统中，R - 1132a越来越被视为R - 23替代混合物中全球变暖潜能值较低的成分。尽管截至2018年已有多项研究对R - 1132a的热力学性质进行了研究，但近年来又进行了重新研究。为了对这些新的测量做出贡献，对R - 1132a的临界参数进行了实验重新测定。还测量了从240 K到临界温度的32个蒸气压、254 K以上的15个饱和蒸气和6个饱和液体密度，以及从50 kg·m到760 kg·m密度范围内气相（98个点）和液相（34个点）的性质。对这些性质的每个特定相关性进行了优化，并与文献中先前可用的数据进行了比较。此外，使用彭 - 罗宾逊状态方程来表示上述性质，并进一步用于确定R - 1132a的焓和熵。
在线版本包含可在10.1007/s10765 - 023 - 03184 - 4获取的补充材料。
