双元混合物的液相p-V-T关系及泡点、露点的压力和密度  

The p-V-T Relationship of Liquid Phase, Dew and Bubble Point Pressures and Densities of Binary Mixtures

作　　者：梁燕波[1] 童景山[2] 

机构地区：[1]徐州师范大学化学系,徐州221009 [2]清华大学化学工程系,北京100084

出　　处：《天然气化工—C1化学与化工》2006年第4期71-74,共4页Natural Gas Chemical Industry

摘　　要：本文对双元液体混合物(75%(w)R-12+25%(w)R-22)的热力学性质在宽广的密度范围内作了研究。基于分子聚集理论本文提出一个计算泡点体积(密度)的新方法、计算结果表明,本方法完全适合用来推算液体混合物的pVT性质。另外,双元混合物的过冷液体的液相等容线可以用一线性方程p=Av+BvT予以表述,其中Av和Bv是只和摩尔体积有关的常量。而双元混合物的露点和泡点密度用直线直径定律进行关联,取得良好结果。The thermodynamic properties of a liquid binary mixture consisting of 75 weight percent Freon- 12 and 25 weight percent Freon-22 have been investigated over a wide density range. A new method of estimating the bubble point volumes （densities） was presented based on the theory of molecular aggregation, and the calculation result showed that this method is well suited to estimate the p-V-T property of the liquid mixture. In addition, the supercooling liquid isochores for the binary mixture can be represented by the linear equation p = Av ＋ BvT. The dew and bubble densities of the binary mixture can be correlated to a good approximation, by the law of rectilinear diameters,

关 键 词：液体双元混合物 液体p-V-T关系 露点与泡点 

分 类 号：TQ015[化学工程]