The thermal conductivity of propane |
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Authors: | R. C. Prasad G. Wang J. E. S. Venart |
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Affiliation: | (1) Division of Mathematics, Engineering and Computer Science, University of New Brunswick, E2L 4L5 Saint John, New Brunswick, Canada;(2) Fire Science Centre and Department of Mechanical Engineering, University of New Brunswick, P.O. Box 4400, E3B 5A3 Frederiction, New Brunswick, Canada |
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Abstract: | This paper presents thermal conductivity measurements of propane over the temperature range of 192–320 K, at pressures to 70 MPa, and densities to 15 mol · L–1, using a transient line-source instrument. The precision and reproducibility of the instrument are within ±0.5%. The measurements are estimated to be accurate to ±1.5%. A correlation of the present data, together with other available data in the range 110–580 K up to 70 MPa, including the anomalous critical region, is presented. This correlation of the over 800 data points is estimated to be accurate within ±7.5%.Nomenclature an, bij, bn, cn Parameters of regression model - C Euler's constant (=1.781) - P Pressure, MPa (kPa) - Pcr Critical pressure, MPa - Q1 Heat flux per unit length, W · m–1 - t time, s - T Temperature, K - Tcr Critical temperature, K - T0 Equilibrium temperature, K - Tre Reference temperature, K - Tr Reduced temperature = T/Tcr - TTP Triple-point temperature, KGreek symbols Thermal diffusivity, m2 · s–1 - Ti Temperature corrections, K - T Temperature difference, K - Tw Temperature rise of wire between time t1 and time t2, K - T* Reduced temperature difference (T–Tcr)/Tcr - corr Thermal conductivity value from correlation, W · m–1 · K–1 - ![Delta](/content/yx0k03281152972m/xxlarge916.gif) cr Thermal conductivity anomaly, W · m–1 · K–1 - ![Delta](/content/yx0k03281152972m/xxlarge916.gif) e Excess thermal conductivity, W · m–1 · K–1 - ![Delta](/content/yx0k03281152972m/xxlarge916.gif) * Reduced density difference - Thermal conductivity, W–1 · m–1 · K–1, mW · m–1 · K–1 - bg Background thermal conductivity, W · m–1 · K–1 - 0 Zero-density thermal conductivity, W · m–1 · K–1 - Density, mol · L–1 - cr Critical density, mol · L–1 - re Reference density, mol · L–1 - r Reduced densityPaper presented at the Tenth Symposium on Thermophysical Properties, June 20–23, 1988, Gaithersburg, Maryland, U.S.A. |
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Keywords: | high pressure propane thermal conductivity |
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