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Effets de plusieurs paramètres sur la formation de givre dans les environnements à basse température : température de l'air d'environ -16 °C.

Effect of several parameters on frost growth in low temperature environments: air temperature of about -16°C.

Numéro : pap. C1-001

Auteurs : YAMASHITA K., OHKUBO H.

Résumé

In order to increase the coefficient of performance of heat exchangers, such as air conditioners, showcases, and unit coolers, under frosting conditions, it is necessary to elucidate the frost deposition mechanism in low temperature environments. Frost properties were measured at temperatures below 0°C. The experimental results were analyzed and a simulation model of frost growth in low temperature environments was developed. In the simulation model, frost growth during the crystal growth period was calculated by using the ice column model of Tao et al. and during the subsequent frost growth period, another model was used; this model calculated the frost growth according to diffusion into the frost layer on the basis of Fick’s law and the model of Le Gall et al. The simulations were performed to calculate the frost growth on a flat plate and the influences of several parameters on frosting phenomenon were elucidated at air temperarure of about –16°C.

Documents disponibles

Format PDF

Pages : 10 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Effect of several parameters on frost growth in low temperature environments: air temperature of about -16°C.
  • Identifiant de la fiche : 30005141
  • Langues : Anglais
  • Source : ACRA2010. Asian conference on refrigeration and air conditioning: Tokyo, Japan, June 7-9, 2010.
  • Date d'édition : 07/06/2010

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