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Theoretical consistency test of steam transport properties
Authors:J. Thoen-Hellemans  E. A. Mason
Affiliation:

Brown University, Providence, Rhode Island 02912, U.S.A.

Abstract:The kinetic theory of polyatomic gases is used to test the mutual consistency of the thermal conductivity, viscosity and specific heat of low-pressure steam from 100° to 700°C. No inconsistency exists within the cited tolerances of the skeleton tables recommended by the Sixth International Conference on the Properties of Steam, but there is some basis for suspecting that the high-temperature thermal conductivity values are slightly low. Methods for tightening the consistency bounds are suggested.
Keywords:dimensionless ratio of order unity, equation (3)  rotational heat capacity per molecule  vibrational heat capacity per molecule  constant-volume translational heat capacity per molecule  D  seclusion coefficient  diffusion coefficient for rotational energy  diffusion coefficient for vibrational energy  dimensionless correction factors equations (S)-(9)  ?  Planck's constant divided by 2π  principal moments of inertia of a molecule  k  Boltzmann constant  m  molecular mass  t  temperature (C)  T  temperature (K)  δ  correction term for inelastic collisions, equations (l)-(2)  correction terms for resonant exchange of rotational energy, equation (5)  collision number for rotationally inelastic collisions  η  dynamic viscosity  characteristic rotational temperatures, equation (7)  molecular quadrupole moment  thermal conductivity  molecular dipole moment  gas density
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