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Document IIF

Conductivité thermique du givre : synthèse de la littérature et corrélation des données.

Thermal conductivity of frost: literature review and correlation of data.

Numéro : pap. n. 35

Auteurs : NEGRELLI S., HERMES C. J. L.

Résumé

The present work is aimed at advancing a correlation for the thermal conductivity of frost. A theoretical analysis was conducted based the limiting cases of serial and parallel association of the thermal resistances of moist air and ice crystals, thus setting the theoretical background for a dimensionless model for the thermal conductivity as a function of the porosity of the frosted medium. Experimental data obtained elsewhere (Pitman and Zuckerman, 1967; Brian et al., 1969; Auracher, 1986; Na and Webb, 2004) for a wide wall temperature span were employed to fit the theoretical model to come out with a semi-empirical correlation for the thermal conductivity of frost. Comparisons of the proposed correlation with the experimental data showed that the correlation is able to predict 81% of the data points (153 out of 188) within the 15% thresholds.

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Pages : 8 p.

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Détails

  • Titre original : Thermal conductivity of frost: literature review and correlation of data.
  • Identifiant de la fiche : 30015071
  • Langues : Anglais
  • Source : Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
  • Date d'édition : 16/08/2015
  • DOI : http://dx.doi.org/10.18462/iir.icr.2015.0035

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