MIXING RULE FOR LIQUID VISCOSITIES OF REFRIGERANT MIXTURES

被引：9
作者：
JUNG, DS
DIDION, D
机构：
[1] Department of Mechanical Engineering, University of Maryland, College Park
[2] Thermal Machinery Group, National Institute of Standards and Technology, Gaithersbug, MD 20899, Center for Building Technology
来源：
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 1990年 / 13卷 / 04期
关键词：
liquid viscosities; mixing rule; refrigerant mixtures;
D O I：
10.1016/0140-7007(90)90036-V
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
An investigation of mixing rules for liquid viscosities of refrigerant mixtures is reported. Measured liquid viscosities of seven azeotropes and their corresponding pure components are compared with available mixing rules and Hildebrand's correlation. The results indicate that the viscosities of pure refrigerants are a strong function of volume, supporting Hildebrand's theory. The mixing rules popular in the refrigeration industry are not universally valid for all the mixtures considered. The volume change due to mixing is responsible for almost all of the deviations of the liquid viscosities of mixtures from ideal values. A simple relationship between excess viscosity and excess volume is developed, which results in deviations of less than 2% when used with Grunberg and Nissan's correlation. Based on this study, it is recommended that density measurements are accompanied by viscosity measurements for refrigerant mixtures. © 1990.
引用
收藏
页码：243 / 247
页数：5
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