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Chute de pression monophasique dans des collecteurs cylindriques ronds dans des échangeurs de chaleur à microcanaux et écoulement parallèle.

Single phase pressure drop in round cylindrical headers of parallel flow MCHXs.

Numéro : pap. 2542

Auteurs : REN T., CHAVOSHI A., DING G., et al.

Résumé

This paper presents the investigation of the pressure drop in headers and development of correlation for pressure loss coefficient for single phase flow through round cylindrical headers of parallel MCHXs. The working fluid was compressed air flowing through header with 1 - 20 m/s based on smallest cross section while the velocity through micro-channels was in the range 6 - 30 m/s. The experimental results indicate that the pressure loss coefficient of inlet header is a linear function of the ratio of velocities through micro-channel tube and header, except for the first two micro-channel tubes; the pressure loss coefficient of outlet header is a quadratic function of the ratio of velocities through micro-channel tube and header, and decreases as the velocities through upstream micro-channel tubes increase. Correlations for predicting pressure drop of inlet header and outlet header are developed and agree for 98% of experimental data is within a ±15 Pa.

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 : Single phase pressure drop in round cylindrical headers of parallel flow MCHXs.
  • Identifiant de la fiche : 30013041
  • Langues : Anglais
  • Source : 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 14/07/2014

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