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Analyse adimensionnelle à base numérique d'écoulement critique de R12, R22 et R134a à travers des tubes capillaires horizontaux.

Numerical-based non-dimensional analysis of critical flow of R-12, R-22, and R-134a through horizontal capillary tubes.

Auteurs : JAVIDMAND P., HOFFMANN K. A.

Type d'article : Article, Article de la RIF

Résumé

Development of correlations predicting critical mass flow rate and critical pressure distribution through capillary tubes is presented. In order to accomplish such a work, the critical mass flow rate and pressure distribution for nearly 500 operational conditions for R-12, R-22, and R-134a are evaluated. Operational conditions include inlet pressure varying from 800 to 1500 kPa, inlet subcold temperature between 0 and 10°C, length varying from 1 to 2 m, and inner diameter between 0.5 and 1.5 mm. By performing non-dimensional analysis on numerical data, general correlations are presented to predict the critical mass flow rate through capillary tubes. In addition, by utilizing numerical data for down-stream pressure, non-dimensional analysis is performed to present correlations to predict critical down-stream pressure and pressure distribution through capillary tubes.

Documents disponibles

Format PDF

Pages : 58-68

Disponible

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    20 €

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    Gratuit

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Détails

  • Titre original : Numerical-based non-dimensional analysis of critical flow of R-12, R-22, and R-134a through horizontal capillary tubes.
  • Identifiant de la fiche : 30015668
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 58
  • Date d'édition : 10/2015

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