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Etude numérique sur le transfert de chaleur et les caractéristiques d'écoulement dans les condenseurs utilisés pour les frigorigènes employés afin de remplacer le R22.

[In Chinese. / En chinois.]

Auteurs : DENG B., YOU S. Y., LIN L.

Type d'article : Article

Résumé

A steady-state distributed parameter model was put forward in the numerical simulation of refrigerant circuitry in condensers in this paper. Applying this model, the heat transfer and flow characteristics of two-row counter-flow condensers which used the refrigerant replacement of R22 (R407C, R410A, R134a) are studied. Among the characteristics comparison of 4-refrigerant condensers, the heat transfer rate of R410A condensers is better than the other refrigerant condensers, but its condensing pressure is much higher than that of R22, the pressure drop of R134a condensers is too high, so neither of the two refrigerant substitutes are perfect replacement solutions. The heat transfer rate of R407C condensers is 3-5% higher than R22 condensers and the pressure drop of R407C condensers is 5-10% lower than R22. R407C is the ideal refrigerant for substitution of R22.

Détails

  • Titre original : [In Chinese. / En chinois.]
  • Identifiant de la fiche : 2006-1114
  • Langues : Chinois
  • Source : Refrigeration - vol. 91 - n. 2
  • Date d'édition : 06/2005

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