Thermal conductivity of isopentane in the temperature range 307?355 K at pressures up to 0.4 GPa

Al-Harbi, D.K.; Assael, Marc J.; Karagiannidis, L.; Wakeham, W. A.

doi:10.1007/bf00506119

Cited by 7 publications

(9 citation statements)

References 9 publications

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“…The data have been corrected to a nominal temperature by the application of small, linear temperature corrections. For purposes of comparison, the present experimental data were represented by an equation of the form (1) where P* = (P -P')/P' (2) and x is the mole fraction of benzene in the system. The values of the coefficients ai and the normalizing pressure P' are collected in Table III.…”

Section: The Pure Componentsmentioning

confidence: 99%

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Thermal conductivity of liquid mixtures of benzene and 2,2,4-trimethylpentane at pressures up to 350 MPa

Mensah-Brown

Wakeham

1994

Int J Thermophys

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This paper contains the results of new measurements of the thermal conductivity of mixtures of benzene and 2,2,4-trimethylpentane in the liquid phase within the temperature range 313 to 344 K at pressures up to 350 MPa. The measurements were carried out with a transient hot-wire instrument and have an estimated accuracy of +0.3%. The study is the first conducted at high pressures on mixtures of components of greatly differing volatilities and therefore provides a further test of methods of representing the thermal conductivity of liquid mixtures based upon the hard-sphere theory of transport in liquids. It is shown that the procedure is capable of representing all of the present experimental data within +5%. A more detailed examination of the results reveals small, but systematic, deviations from universality of the behavior of the thermal conductivity as a function of density implied by the hard-sphere theory, which merit further investigation.

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Section: The Pure Componentsmentioning

confidence: 99%

“…and prediction of liquid-phase transport properties [1][2][3][4][5]. The procedure has been successfully extended to the representation and prediction of the thermal conductivity of binary liquid mixtures [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Thermal conductivity of liquid mixtures of benzene and 2,2,4-trimethylpentane at pressures up to 350 MPa

Mensah-Brown

Wakeham

1994

Int J Thermophys

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“…In this section, 7595 thermal conductivity data for pure liquids available in the literature ,,− were used to acquire group contribution parameters and model parameters in eqs and , after which 2160 thermal conductivity data for 71 binary mixtures were gathered from the literature − and were used to determine model parameters for the four types of liquids in eq . The model parameters for each type of liquid work for all mixtures belonging to that type of liquid.…”

Section: Resultsmentioning

confidence: 99%

Prediction of Thermal Conductivity for Guiding Molecular Design of Liquids

Liu

Wang

Lan

et al. 2020

ACS Sustainable Chem. Eng.

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There is a need for molecular-structure-based predictive models that guide the molecular design of materials with desired properties. Herein, we developed a general model based on group-contribution (GC) theory and vibrational theory that predicts the thermal conductivity of different types of liquids which are used as working media in energy conversion and environmental protection, including three types of organic molecular liquids, ionic liquids, and their mixtures. We also derive the pressure dependencies of the thermal conductivities of these liquids for the first time. The GC model is extended to determining the thermal conductivities of mixtures by developing a group division method and mixing rules that operate without knowing the thermal conductivity of each component. The excellent performance of the presented model is verified by comparing the predicted thermal conductivities with experimental data and those from other models. On the basis of the developed model, group sequences are established according to their contributions to thermal conductivity, and the sensitivity of thermal conductivity to temperature and pressure is analyzed to guide the molecular design of liquids.

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“…Table summarizes the main experimental measurements of the thermal conductivity of isopentane published in the literature. To the best of our knowledge, most of the experimental data for isopentane were obtained at atmospheric pressure, ,,− and only two papers , were found that reported thermal conductivity for liquid-phase isopentane at a pressure range of 0.1–30 MPa. Measurements of Vilím et al and Filippov et al were obtained in a coaxial cylinder instrument with respective uncertainties of 2 and 3%.…”

Section: Discussionmentioning

confidence: 99%

Measurements of the Thermal Conductivity of n-Pentane, Isopentane, 1-Pentene, and 1-Pentanol in the Temperature Range from 253 to 373 K at Pressures up to 30 MPa

Wang

Qiu

et al. 2020

J. Chem. Eng. Data

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In this work, thermal conductivities of a homologous series of liquids n-pentane, isopentane, 1-pentene, and 1-pentanol were measured from 253 to 373 K at pressures up to 30 MPa with a transient hot-wire apparatus. The relative expanded uncertainty of the reported data was estimated to be 2.0% with a confidence level of 0.95 (k = 2). The polynomial thermal conductivity model was used to correlate the experimental values for each of the fluids. The average absolute percentage deviations of the experimental results from fitting were 0.3, 0.3, 0.3, and 0.1%. Comparisons were provided between the data obtained in this work and published literature.

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Thermal conductivity of isopentane in the temperature range 307?355 K at pressures up to 0.4 GPa

Cited by 7 publications

References 9 publications

Thermal conductivity of liquid mixtures of benzene and 2,2,4-trimethylpentane at pressures up to 350 MPa

Thermal conductivity of liquid mixtures of benzene and 2,2,4-trimethylpentane at pressures up to 350 MPa

Prediction of Thermal Conductivity for Guiding Molecular Design of Liquids

Measurements of the Thermal Conductivity of n-Pentane, Isopentane, 1-Pentene, and 1-Pentanol in the Temperature Range from 253 to 373 K at Pressures up to 30 MPa

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