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JOURNAL OF CHEMICAL AND ENGINEERING DATA · 2021 · IF 2.694

Densities and Viscosities for the Binary Mixtures of n-Nonane with 1-Heptanol, 1-Octanol, 1-Nonanol, and 1-Decanol

Hao Wang,Nianzu Zhang,Xiaopo Wang

Densities and viscosities for the binary mixtures of n-nonane/1-heptanol, n-nonane/1-octanol, n-nonane/1-nonanol, and n-nonane/1-decanol were presented in this work. The measurements were carried out using an Anton Paar digital vibrating U-tube densimeter and an Ubbelohde capillary viscometer, and the entire composition range was investigated from 303.15 to 333.15 K at atmospheric pressure. In addition, the excess molar volumes and viscosity deviations of the mixtures were calculated and discussed. The Redlich–Kister equation was used to correlate the two derived properties. Furthermore, the viscosities of the studied mixtures were fitted to Eyring-type models.

CAS / MDL: 112-30-1 111-70-6 111-84-2 143-08-8 111-87-5

研究领域: 化学工程 · 物理化学

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FLUID PHASE EQUILIBRIA · 2023 · IF 2.6

Thermal conductivity measurements for n-nonane and n-undecane at elevated temperature and pressure

Shuo Yuan,Yi Liu,Jingwei Cui,Xiong Zheng

Hydrocarbons have wide applications in various industrial processes, and the knowledge of thermophysical properties is the foundation for their utilization. As an important thermophysical property, the thermal conductivity of fluids is vital in the evaluation of energy conversion quality, like heat transfer enhancement , thermodynamic cycle efficiency evaluation, etc. Therefore, obtaining accurate experimental data is of great importance for the utilization of hydrocarbons. Here, the thermal conductivities of liquid n-nonane and n-undecane were investigated using the transient hot-wire method (combined expanded uncertainty is 2.0 %) with a wide temperature and pressure range from 293.15 to 523.15 K and 0.1 to 15.0 MPa. For the convenience of engineering applications, a polynomial as a function of temperature and pressure was proposed to correlate the experimental data, the average absolute deviations between experimental data and fitted data are 0.29 % for n-nonane and 0.35 % for n-undecane, which indicates that the polynomial describes the experimental data well in the measured region. Meanwhile, the available literary data were collected and compared with our results, and good agreement was found between literary data and our results. This work is not only helpful for the industrial applications of hydrocarbons but also helps to understand the internal mechanism of the thermal conductivity of hydrocarbons.

CAS / MDL: 1120-21-4 111-84-2

研究领域: 化学工程 · 热物理

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Densities and Viscosities for the Binary Mixtures of n-Nonane with 1-Heptanol, 1-Octanol, 1-Nonanol, and 1-Decanol

Thermal conductivity measurements for n-nonane and n-undecane at elevated temperature and pressure