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%.
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Abbreviations
- a n, bij, bn, cn :
-
Parameters of regression model
- C :
-
Euler's constant (=1.781)
- P :
-
Pressure, MPa (kPa)
- P cr :
-
Critical pressure, MPa
- Q 1 :
-
Heat flux per unit length, W · m−1
- t :
-
time, s
- T :
-
Temperature, K
- T cr :
-
Critical temperature, K
- T 0 :
-
Equilibrium temperature, K
- T re :
-
Reference temperature, K
- T r :
-
Reduced temperature = T/T cr
- T TP :
-
Triple-point temperature, K
- α :
-
Thermal diffusivity, m2 · s−1
- δT i :
-
Temperature corrections, K
- ΔT :
-
Temperature difference, K
- ΔT w :
-
Temperature rise of wire between time t 1 and time t 2, K
- ΔT * :
-
Reduced temperature difference (T−T cr)/Tcr
- λ corr :
-
Thermal conductivity value from correlation, W · m−1 · K−1
- Δλ cr :
-
Thermal conductivity anomaly, W · m−1 · K−1
- Δλ e :
-
Excess thermal conductivity, W · m−1 · K−1
- Δρ * :
-
Reduced density difference
- λ :
-
Thermal conductivity, W−1 · m−1 · K−1, mW · m−1 · K−1
- λ bg :
-
Background thermal conductivity, W · m−1 · K−1
- λ 0 :
-
Zero-density thermal conductivity, W · m−1 · K−1
- ρ :
-
Density, mol · L−1
- ρ cr :
-
Critical density, mol · L−1
- ρ re :
-
Reference density, mol · L−1
- ρ r :
-
Reduced density
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Prasad, R.C., Wang, G. & Venart, J.E.S. The thermal conductivity of propane. Int J Thermophys 10, 1013–1027 (1989). https://doi.org/10.1007/BF00503170
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DOI: https://doi.org/10.1007/BF00503170