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. 2021;66(12). doi: 10.1021/acs.jced.1c00654.
Bubble point pressures of six binary mixtures at two compositions each have been measured utilizing a static method. The performance of the apparatus was characterized from bubble point measurements of R32 + R125 for which 19 literature studies are available for comparison. The mixtures studied were as follow: R1234yf + R134a, R134a + R1234ze (E), R1234yf + R1234ze (E), R125 + R1234yf, R1234ze (E) + R227ea and R1234yf + R152a. For each mixture measurements were conducted from 270 K to 360 K or to within approximately 10 K of the critical temperature of the pure component with the lower critical temperature. A total of 196 bubble point pressures are reported with combined expanded uncertainties ( = 2) ranging from 0.1% - 0.6%. The measured data are graphically compared to available literature data.
利用静态法测量了六种二元混合物在两种组成下的泡点压力。通过对R32 + R125的泡点测量对该装置的性能进行了表征，有19篇文献研究可用于比较。所研究的混合物如下：R1234yf + R134a、R134a + R1234ze (E)、R1234yf + R1234ze (E)、R125 + R1234yf、R1234ze (E) + R227ea和R1234yf + R152a。对于每种混合物，测量温度范围为270 K至360 K，或至较低临界温度的纯组分临界温度附近约10 K以内。共报告了196个泡点压力，合成扩展不确定度（k = 2）范围为0.1% - 0.6%。将测量数据与现有文献数据进行了图形比较。
