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Étude expérimentale des performances thermohydrauliques côté air des échangeurs de chaleur à microcanaux à ailettes verticales.

Experimental investigation on airside thermal-hydraulic performance of vertical-fin microchannel heat exchangers.

Auteurs : LUO B., LI F., WU S., SHI K., DING Y., ZHAO R., HUANG D., SHI W.

Type d'article : Article de la RIF

Résumé

The vertical-fin microchannel heat exchanger (MHX) demonstrates significant potential as an evaporator for heat pump systems. This study provides an experimental comparison of three typical vertical-fin configurations: MHXs with fin leading (MHX-L), trailing (MHX-T), and both edges extended (MHX-LT). The airside thermal-hydraulic performance is comprehensively evaluated under dry, wet, and frosting operating conditions. The results indicate that, for dry and wet conditions, the MHX-L outperforms the MHX-T. Under frosting conditions, the MHX-T exhibits the poorest performance in frosting and drainage. Consequently, the MHX-L is recommended for practical applications over the MHX-T. The MHX-LT exhibits the highest heat transfer capacity across all conditions due to its larger heat transfer area, albeit with an increased air pressure drop. When assessing the drainage performance in terms of drainage rate and residual ratio, the MHX-L surpasses the MHX-LT. Although the MHX-LT has a higher capacity in the initial cycle than the MHX-L, its inferior drainage performance may lead to a more significant reduction in cyclic capacity.

Documents disponibles

Format PDF

Pages : 167-179

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Experimental investigation on airside thermal-hydraulic performance of vertical-fin microchannel heat exchangers.
  • Identifiant de la fiche : 30033830
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 173
  • Date d'édition : 05/2025
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2025.01.030

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