PR Equation of State Based Friction Theory Viscosity Model for Liquid Refrigerants

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PR Equation of State Based Friction Theory Viscosity Model for Liquid Refrigerants

更新时间：2025-07-09

- PR Equation of State Based Friction Theory Viscosity Model for Liquid Refrigerants
- Vol. 44, Issue 5, Pages: 10-14(2010)
- 作者机构：
  
  西安交通大学动力工程多相流国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK121
- Online First：10 May 2010，
  
  Published：2010
- 稿件说明：
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PR Equation of State Based Friction Theory Viscosity Model for Liquid Refrigerants[J]. 2010, 44(5): 10-14.
DOI：

PR Equation of State Based Friction Theory Viscosity Model for Liquid Refrigerants[J]. 2010, 44(5): 10-14. DOI：

摘要

在对14种制冷剂(R152a、R123、R141b、R11、R12、R125、R22、R32、R143a、R227ea、R236ea、R236fa、R245ca、R245fa)的液相黏度实验数据进行收集的基础上

将摩擦理论与工程上常用的PR方程相结合

建立了这14种制冷剂的液相黏度模型

并通过最小二乘法回归得到了模型中的各系数.结果表明

在拟合范围内

这14种制冷剂的稀薄气体黏度计算值与文献值的绝对平均偏差在1%以内

各制冷剂液相黏度计算值与实验值的绝对平均偏差在0.31%～1.92%之间

能够满足实际工程需要.

Abstract

The experimental liquid viscosity data of 14 pure refrigerants(R152a

R123

R141b

R11

R12

R125

R22

R32

R143a

R227ea

R236ea

R236fa

R245ca

and R245fa)are collected

and then a liquid viscosity model of the refrigerants is established using the friction theory in conjunction with the Peng-Robinson(PR)equation of state. The coefficients of the viscosity model are obtained using the least square method. The results show that all the average absolute deviations between the viscosity values calculated and the data in literature for the refrigerants in the dilute gas phase are less than 1%. In addition

all the average absolute deviations between the measurements and the viscosity values calculated with the present model for the refrigerants in the liquid phase are 0.31% - 1.92%.

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references

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