Experimental investigation of the thermal properties of a binary n-hexane-water mixture at high temperatures and pressures

被引:4
|
作者
Rasulov, SM [1 ]
Rasulov, AR [1 ]
机构
[1] Russian Acad Sci, Dagestan Sci Ctr, Inst Phys, Makhachkala 367003, Dagestan, Russia
基金
俄罗斯基础研究基金会;
关键词
D O I
10.1007/BF02755997
中图分类号
O59 [应用物理学];
学科分类号
摘要
The results are presented of an experimental investigation of the thermal properties of a binary n-C6H14 + H2O mixture (system) in the ranges of temperature from 372.75 to 690.55 K, density from 66.87 to 834.30 kg/m(3), and pressure from 0.4 to 65.7 MPa. Measurements are performed for seven values of water concentration x (in molar fractions), namely, 0.166, 0.257, 0.347, 0.615, 0.827, 0.935, and 0.964. The investigations cover the region of liquid-vapor phase equilibrium and extend further into the homogeneous region. In order to describe the P-V-T-x properties of a binary n-hexane-water mixture, the Soave-Redlich-Kwong formula is used (the average error is 3%, and the maximum error is 8%). Based on the scaling equations, the critical indices and amplitudes for the curves of liquid-vapor coexistence are calculated for three values of water concentration.
引用
收藏
页码:389 / 393
页数:5
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