International Journal of Thermophysics

, Volume 4, Issue 1, pp 11–33 | Cite as

Thermal conductivity measurement of n-butane over wide temperature and pressure ranges

  • C. A. Nieto de Castro
  • R. Tufeu
  • B. Le Neindre
Article

Abstract

The thermal conductivity of n-butane has been measured by a coaxial-cylinder method over a pressure range from 0.1 MPa up to 70 MPa and a temperature range from room temperature to 600 K, covering all fluid states. The estimated accuracy of the method is about 2%. Special emphasis has been given to the behavior of the thermal conductivity near the critical point, and the critical enhancement has been studied for 3.6 K<δT<176 K. The effect of inelastic collisions upon transport properties of the dilute gas has been discussed. The results obtained for the reduced critical enhancement as a function of the reduced critical temperature confirm the universality of the critical exponent, for the n-alkanes, whereas the reduced excess thermal conductivity outside the critical region is a function of the reduced density and of the n-alkane.

Key words

butane corresponding states critical region thermal conductivity 

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Copyright information

© Plenum Publishing Corporation 1983

Authors and Affiliations

  • C. A. Nieto de Castro
    • 1
  • R. Tufeu
    • 2
  • B. Le Neindre
    • 2
  1. 1.Departamento de Química, FCULCentro de Química EstruturalLisboa CodexPortugal
  2. 2.LIMHP, CNRS, Université Paris-NordVilletaneuseFrance

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