Prediction of refrigerant-lubricant viscosity using the general PC-SAFT friction theory

被引：11
|
作者：
Marcelino Neto, Moises A. [1 ]
Barbosa, Jader R., Jr. [1 ]
机构：
[1] Univ Fed Santa Catarina, Dept Mech Engn, POLO Res Labs Emerging Technol Cooling & Thermoph, BR-88040900 Florianopolis, SC, Brazil
来源：
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2014年 / 45卷
关键词：
Viscosity; Refrigerant-oil mixtures; f-theory; Phase equilibrium; PC-SAFT; LIQUID VISCOSITIES; HEAT-TRANSFER; MIXTURES; OIL; SOLUBILITY; BEHAVIOR; EQUATION; PHASE; ISOBUTANE; SQUALANE;
D O I：
10.1016/j.ijrefrig.2014.05.019
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In this work, a friction theory (f-theory) viscosity model founded on the perturbed-chain statistical associating fluid theory (PC-SAFT) equation of state (EoS) was used to calculate the viscosity of refrigerant-oil mixtures. The model, which links viscosity to the repulsive and attractive pressure terms of the PC-SAFT EoS, can provide satisfactory viscosity predictions of mixtures of carbon dioxide (R-744) and two synthetic lubricants, namely, a polyolester (POE) ISO VG 68 and an alkylbenzene (AB) ISO VG 32, as well as mixtures of isobutane (R-600a) and two other synthetic lubricants, a POE ISO VG 7 and an AB ISO VG 5. The root-mean square (RMS) deviations related to the viscosity prediction were 0.69% (R-600a/POE ISO 7), 0.99% (R-600a/AB ISO VG 5), 3.16% (R-744/POE ISO VG 68) and 3.18% (R-744/AB ISO VG 32). (C) 2014 Elsevier Ltd and IIR. All rights reserved.
引用
收藏
页码：92 / 99
页数：8
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