An improved extended corresponding states method for estimation of viscosity of pure refrigerants and mixtures
An improved extended corresponding states method for estimation of viscosity of pure refrigerants and mixtures
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DOI：
10.1016/s0140-7007(96)00073-4
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发表时间：
1997-05-01
期刊：
影响因子：
--
通讯作者：
Laesecke, A
中科院分区：
文献类型：
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作者：
Klein, SA;McLinden, MO;Laesecke, A
研究了计算纯制冷剂和混合物粘度的扩展对应状态法。通过引入利用现有的纯流体粘度数据评估的第三个形状因子，可以显著提高纯流体粘度值的准确性。提出了对Huber和Ely（流体相平衡，1992,80,45-46）方法的一种修正，用于估计混合物的粘度；这种修正消除了在临界点处不连续的可能性，保证了在组分摩尔分数接近1的极限下提供纯组分粘度，提高了方法的整体精度。该方法已应用于12种纯制冷剂，包括3种碳氢化合物和混合物。对于所研究的所有纯流体和大多数混合物，计算值与实验值之间的平均绝对偏差在4%以内。由爱思唯尔科学有限公司和IIR出版。
The extended corresponding states method for calculating the viscosity of pure refrigerants and mixtures is investigated. The accuracy of pure fluid viscosity values is significantly improved by introducing a third shape factor evaluated using available pure fluid viscosity data. A modification to the method of Huber and Ely (Fluid Phase Equilibria, 1992, 80, 45-46) is proposed for estimation of the viscosity of mixtures; this modification eliminates the possibility of discontinuities at the critical point, ensures that the pure component viscosity is provided in the limit of a component mole fraction approaching 1, and improves the overall accuracy of the method. The method has been applied to 12 pure refrigerants including three hydrocarbons and mixtures. The average absolute deviations between the calculated and experimental viscosity values are within 4% for all of the pure fluids and most of the mixtures investigated. Published by Elsevier Science Ltd and IIR.