Mebelli Marko, Velliadou Danai, Assael Marc J, Huber Marcia L
Laboratory of Thermophysical Properties and Environmental Processes, Chemical Engineering Department, Aristotle University, Thessaloniki 54636, Greece.
Applied Chemicals and Materials Division, National Institute of Standards and Technology, 325 Broadway, Boulder, CO 80305, USA.
Int J Thermophys. 2021 May 26;42(8). doi: 10.1007/s10765-021-02867-0.
We present a new wide-ranging correlation for the viscosity of ethane-1,2-diol (ethylene glycol) based on critically evaluated experimental data. The correlation is designed to be used with an existing equation of state, and it is valid from the triple point to 465 K, at pressures up to 100 MPa. The estimated uncertainty is 4.9 % (at the 95 % confidence level), except in the dilute-gas region which is estimated to be 15 %, as there are no measurements in this region for comparison. The correlation behaves in a physically reasonable manner when extrapolated to 750 K and 250 MPa, however care should be taken when using the correlations outside of the validated range.
我们基于经过严格评估的实验数据，提出了一种新的、适用范围广泛的乙烷 - 1,2 - 二醇（乙二醇）粘度关联式。该关联式旨在与现有的状态方程配合使用，在压力高达100 MPa的情况下，从三相点到465 K均有效。估计的不确定度为4.9%（在95%置信水平下），但在稀薄气体区域估计为15%，因为该区域没有可供比较的测量数据。当外推到750 K和250 MPa时，该关联式的表现符合物理常理，但在验证范围之外使用该关联式时应谨慎。
