Contents - Index
C5H12 provides ideal gas thermodynamic properties for n-pentane over the temperature range from 200 K to 6000 K based on property information from McBride et al, 2002. The reference state for specific enthalpy is based on the enthalpy of formation relative to the elements at 25 C. The reference state for specific entropy is based on the Third Law of Thermodynamics. The reference values are from:
Bonnie J. McBride, Michael J. Zehe, and Sanford Gordon
"NASA Glenn Coefficients for Calculating Thermodynamic Properties of Individual Species"
NASA/TP-2002-211556, Sept. 2002
The reference state for specific enthalpy is based on the enthalpy of formation relative to the elements (-146,440 kJ/kmol) at 25 C. The reference state for specific entropy is determined by the Third Law of Thermodynamics.
Transport property correlations were taken from Yaws, Carl L., ed. Chemical Properties Handbook. New York: McGraw-Hill, 1999. except for Gas viscosity, which is from:
"Recommended Values for the Viscosity in the Limit of Zero Density and its Initial Density Dependence for Twelve Gases and Vapors: Revisited from Experiment
between 297 K and 691 K"
J. Phys. Chem. Ref. Data 49, 043102 (2020); https://doi.org/10.1063/5.0023688
The viscosity correlation is applicable for temperatures between 300 K and 900 K.
The thermal conductivity is applicable for temperatures between 225 K and 480 K.
Note that C5H12 provides thermodynamic properties assuming ideal gas behavior. Use n-pentane or isopentane to provide real fluid properties in the subcooled, saturated mixture, and superheated regimes of these fluids
Fluid Property Information