( Vapour + liquid ) equilibrium measurement and correlation of the refrigerant ( propane + 1,1,1,3,3,3-hexafluoropropane) atT = ( 283.13, 303.19, and 323.26) K
( Vapour + liquid ) equilibrium measurement and correlation of the refrigerant ( propane + 1,1,1,3,3,3-hexafluoropropane) atT = ( 283.13, 303.19, and 323.26) K
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DOI：
10.1006/jcht.2000.0713
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发表时间：
2000-12
期刊：
影响因子：
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通讯作者：
S. Bobbo;R. Camporese;R. Stryjek
中科院分区：
文献类型：
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作者：
S. Bobbo;R. Camporese;R. Stryjek
抽象（汽+液）平衡（v.l.e.）在T =（283.13、303.19和323.26）K下，使用借助于磁力泵的蒸汽通过液体的强制再循环，测量制冷剂{丙烷（R290）+1，1，1，3，3，3-六氟丙烷（R236 fa）}的数据。通过气相色谱法测定两相的组成。由于R290中存在超过可忽略量的杂质，因此提供了两组数据并进行了关联：第一组数据是在不考虑组成测量中的杂质的情况下确定的，假设混合物为二元混合物;第二组是假设混合物是四元的而获得的，考虑到检测到的两种杂质{正丁烷（R600）和异丁烷（R600 a）}作为混合物的组分。用Carnahan-Starling-De Santis状态方程对结果进行了关联。实验结果显示出强烈的正偏离拉乌尔定律和在高R290浓度下存在共沸组合物。应用同型概念，在（二甲醚+R236 fa）的氢键结合能估计使用以前发表的结果和那些在这里。V.L.E.该系统的其他文献中没有报道。
Abstract (Vapour + liquid) equilibrium (v.l.e.) data were measured for the refrigerant {propane (R290) + 1,1,1,3,3,3-hexafluoropropane (R236fa)} at T = (283.13, 303.19, and 323.26) K, using forced recirculation of the vapour through the liquid by means of a magnetic pump. The composition of both phases was determined by gas chromatography. Due to the presence of more than negligible amounts of impurities in the R290, two sets of data are presented and correlated: the first was determined disregarding the impurities in the composition measurement, assuming that the mixture was binary; the second set was obtained assuming that the mixture was quaternary, considering the two impurities detected { n -butane (R600) and isobutane (R600a)} as components of the mixtures. The results were correlated using the Carnahan–Starling–De Santis equation of state. The experimental findings show a strong positive deviation from Raoult’s law and the presence of an azeotropic composition at high R290 concentrations. Applying the homomorph concept, the hydrogen-bonding energy in (dimethyl ether + R236fa) was estimated using previously published results and those presented here. The v.l.e. of the system are not reported elsewhere in the literature.