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Thermal conductivity of air in the range 312 to 373 K and 0.1 to 24 MPa (1981)

Scott, A. C. ; Johns, A. I. ; Watson, J. T. R. ; [weitere]

Springer

International journal of thermophysics 2 (1981), S. 103-114

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Details

ISSN: 1572-9567

Schlagwort(e): Air ; hot-wire technique ; thermal conductivity ; transient technique

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract We have used the transient hot-wire technique to make absolute measurements of the thermal conductivity of dry, CO2-free air in the temperature range from 312 to 373 K and at pressures of up to 24 MPa. The precision of the data is typically ±0.1%, and the overall absolute uncertainty is thought to be less than 0.5%. The data may be expressed, within their uncertainty, by polynomials of second degree in the density. The values at zero-density agree with other reported data to within their combined uncertainties. The excess thermal conductivity as a function of density is found to be independent of the temperature in the experimental range. The excess values at the higher densities are lower than those reported in earlier work.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00503935

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