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Une étude expérimentale sur la prévention de givre d'un échangeur de chaleur à tubes ailetés grâce à l'application de solution antigel sur la surface d'échange.

An experimental study on the frost prevention of fin-tube heat exchanger by spreading antifreeze solution on heat exchanger surface.

Auteurs : CHANG Y. S., OH S. Y.

Résumé

A study on frost prevention of fin-tube heat exchanger is experimentally performed by spreading an antifreeze solution on a heat exchanger surface. It is desirable that the antifreeze solution spreads completely on the surface forming thin liquid film to prevent frost nucleation and crystal growth and reduce the thermal resistance across the liquid film. A small amount of the antifreeze solution falls in drops on the heat exchanger surface using two types of supplying devices, and a porous layer coating technique is adopted to enhance the wettability of the antifreeze solution on the surface. It is observed that the antifreeze solution liquid film prevents the fin-tube heat exchanger from frosting, and heat transfer performances do not degrade within the test range of the air flow rate and mass flow rate of sprayed antifreeze solution.

Détails

  • Titre original : An experimental study on the frost prevention of fin-tube heat exchanger by spreading antifreeze solution on heat exchanger surface.
  • Identifiant de la fiche : 2007-0679
  • Langues : Anglais
  • Source : ACRA-2006. Proceedings of the 3rd Asian conference on refrigeration and air conditioning.
  • Date d'édition : 21/05/2006

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