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Caractéristiques du transfert de chaleur dans un thermosiphon fermé diphasique coudé : incidence de la distance entre l'évaporateur et le condenseur.

[In Japanese. / En japonais.]

Auteurs : IMURA H., KOITO Y.

Type d'article : Article

Résumé

The paper describes the heat transfer characteristics in a two-phase crank-shape closed thermosiphon. Usually, the thermosiphon is composed of an evaporator, an adiabatic section and a condenser arranged on a straight tube. However, a bent geometry of the thermosiphon is sometimes needed to use because of the limited space for the straight thermosiphon to be installed. Therefore, in the present study, the crank-shape thermosiphon is investigated on the heat transfer coefficients and the critical heat fluxes. The evaporator and the condenser are positioned vertically and the adiabatic section horizontally. The inside diameter of thermosiphon is 16 mm and each length of the evaporator and condenser is 500 mm. As a working fluid, water is used. The inside temperature (the adiabatic wall temperature) is varied from 40 to 80°C. The distance between the centers of the vertical evaporator and condenser, i.e., the offset length is varied from 220 to 620 mm, and the effect of the offset length on the heat transfer characteristics is presented.

Détails

  • Titre original : [In Japanese. / En japonais.]
  • Identifiant de la fiche : 2006-2266
  • Langues : Japonais
  • Source : Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers - vol. 23 - n. 1
  • Date d'édition : 2006

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