Outcalt Stephanie L, Rowane Aaron J
National Institute of Standards and Technology, Material Measurement Laboratory, Applied Chemicals and Materials Division, 325 Broadway, Boulder, CO 80305-3337, U.S.A.
J Chem Eng Data. 2022;67(4). doi: 10.1021/acs.jced.1c00871.
Bubble point pressures of three binary mixtures at two compositions each have been measured utilizing a static method. The mixtures studied were: difluoromethane + 2,3,3,3 tetrafluoroprop-1-ene (R-32/1234yf), difluoromethane + (E)-1,3,3,3-tetrafluoroprop-1-ene (R-32/1234ze(E)) and 1,1-difluororethene + 2,3,3,3 tetrafluoroprop-1-ene (R-1132a/1234yf). For all the mixtures the minimum temperature measured was 270 K. The maximum temperatures measured for the R-32/1234ze(E), R-32/1234yf and R-1132a/1234yf mixtures were 360 K, 345 K and 325 K respectively. A total of 100 bubble point pressures are reported and compared to available literature data relative to the REFPROP database. Additionally, the bubble point pressures obtained in this study are modeled using the perturbed-chain statistical associating fluid theory (PC-SAFT) equation of state. The PC-SAFT model parameters are reported as well as deviations of this work and literature data from the model.
利用静态方法测量了三种二元混合物在两种组成下的泡点压力。所研究的混合物为：二氟甲烷 + 2,3,3,3 - 四氟丙烯（R - 32/1234yf）、二氟甲烷 + （E）-1,3,3,3 - 四氟丙烯（R - 32/1234ze（E））以及1,1 - 二氟乙烯 + 2,3,3,3 - 四氟丙烯（R - 1132a/1234yf）。对于所有混合物，测量的最低温度为270 K。R - 32/1234ze（E）、R - 32/1234yf和R - 1132a/1234yf混合物测量的最高温度分别为360 K、345 K和325 K。总共报告了100个泡点压力，并与相对于REFPROP数据库的现有文献数据进行了比较。此外，本研究中获得的泡点压力使用扰动链统计缔合流体理论（PC - SAFT）状态方程进行了建模。报告了PC - SAFT模型参数以及本工作和文献数据与该模型的偏差。
