Entropy Scaling of Viscosity for Imidazolium Ionic Liquids with Dissolved Refrigerants Based on the Soft-SAFT Equation of State

IF 2.1 3区 工程技术 Q3 CHEMISTRY, MULTIDISCIPLINARY
Zhiyu Yan, Yiran Wang, Xiangyang Liu* and Maogang He, 
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引用次数: 0

Abstract

The mixtures of ionic liquid/refrigerant are a promising working pair in absorption refrigeration, their viscosity, which is crucial for process design, changes significantly with composition and operating conditions, making existing models inadequate. This study presents an extended application of entropy scaling theory coupled with the soft-SAFT equation of state for viscosity estimation in pure imidazolium-based ionic liquids (ILs) and their mixtures with refrigerants. The methodology was validated through a comprehensive analysis of 4,265 experimental viscosity data points for pure ILs over a wide range of temperatures and pressures, achieving an average absolute relative deviation (AARD) of 5.76% between calculated and experimental values. When the model was extended to IL/refrigerant mixtures, a modified Grunberg–Nissan mass mixing rule was employed, resulting in an AARD of 12.84% across 248 experimental data points.

Abstract Image

基于软saft状态方程的溶解制冷剂咪唑类离子液体粘度熵标度研究
离子液体/制冷剂的混合物是一种很有前途的吸收式制冷工作对,其粘度随其组成和操作条件的变化而显著变化,这使得现有的模型存在不足。本文提出了熵标度理论与软saft状态方程在纯咪唑离子液体及其与制冷剂的混合物粘度估计中的扩展应用。在广泛的温度和压力范围内,通过对4265个纯ILs实验粘度数据点的综合分析,验证了该方法的正确性,计算值与实验值之间的平均绝对相对偏差(AARD)为5.76%。当模型扩展到IL/制冷剂混合物时,采用改进的Grunberg-Nissan质量混合规则,得到248个实验数据点的AARD为12.84%。
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来源期刊
Journal of Chemical & Engineering Data
Journal of Chemical & Engineering Data 工程技术-工程:化工
CiteScore
5.20
自引率
19.20%
发文量
324
审稿时长
2.2 months
期刊介绍: The Journal of Chemical & Engineering Data is a monthly journal devoted to the publication of data obtained from both experiment and computation, which are viewed as complementary. It is the only American Chemical Society journal primarily concerned with articles containing data on the phase behavior and the physical, thermodynamic, and transport properties of well-defined materials, including complex mixtures of known compositions. While environmental and biological samples are of interest, their compositions must be known and reproducible. As a result, adsorption on natural product materials does not generally fit within the scope of Journal of Chemical & Engineering Data.
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