Modelling of PVT for some poly alkylene glycol lubricants using Sako-Wu-Prausnitz EOS

被引：5

作者：

Piñeiro, MM

García, J

Fernández, J ^{[1
]}

机构：

[1] Univ Santiago, Fac Fis, Dept Fis Aplicada, Lab Propiedades Termofis, E-15782 Santiago De Compostela, Spain

[2] Univ Vigo, Fac Ciencias, Dept Fis Aplicada, E-36200 Vigo, Spain

来源：

FLUID PHASE EQUILIBRIA | 2002年 / 199卷 / 1-2期

关键词：

equation of state; lubricant oil; density; pressure; model;

D O I：

10.1016/S0378-3812(01)00810-X

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The group contribution approach of Elvassore et al. has been used in combination with the three parameters cubic equation of state of Sako et al. with the aim to estimate PVT properties of poly alkylene glycols (PAGs), whose use has been proposed as lubricants for some hydrofluorocarbon (HFC) refrigerants. The contribution to the characteristic parameters of the equation of state of the ether CH3O and (CHO)-O-2 groups has been calculated using a database containing densities of monoethers and of a polyether (mono ethyleneglycol dimethyl ether (MEGDME)). Then densities over a wide range of temperatures and pressures have been estimated for longer chain PAGs, obtaining good accuracy. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：23 / 31

页数：9

共 28 条

[1] DENSITIES, REFRACTIVE-INDEXES, SPEEDS OF SOUND, AND VISCOSITIES OF DIETHYLENE GLYCOL DIMETHYL ETHER PLUS BUTYL ACETATE AT 298.15-K, 303.15-K, 308.15-K, 313.15-K, AND 318.15-K [J].