Partager

Impact de la distribution du frigorigène et des découpes d'ailettes sur la performance d'un condenseur à microcanaux et d'un refroidisseur de gaz.

Impact of the refrigerant layout and fin cuts on the performance of a microchannel condenser and a gas cooler.

Numéro : pap. 2271

Auteurs : MARTÍNEZ-BALLESTER S., GONZÁLVEZ-MACIÁ J., CORBERÁN J. M.

Résumé

Microchannel heat exchangers (MCHX) play an important role in topics about charge reduction and transcritical cycles due to its high compactness and high mechanical strength. From a designer’s point of view, given an air-side area and face area, there are many options to design the refrigerant circuitry and aspect ratio of a MCHX. The paper presents numerical studies about the influence on the MCHX’s performance of these design parameters for a condenser working with propane and a gas cooler working with CO2. A technique to improve the MCHX effectiveness is to cut the fins along the middle section between neighboring tubes. Following same methodology as was used in previous study, the paper analyzes the improvement by cutting fins for different condensers layouts. A key point of the paper is that the parameters analyzed can only be assessed by models which take into account heat conduction between tubes, otherwise their effects would be hidden. Results illustrate the presence of an optimum circuitry in order to maximize heat transfer of condensers working in similar conditions. Improvement on the condenser heat transfer by cutting fins depends on the layout which turned to as much as 4%. Impact of heat conduction between tubes was higher and clearer in case of gas cooler.

Documents disponibles

Format PDF

Pages : 8 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 : Impact of the refrigerant layout and fin cuts on the performance of a microchannel condenser and a gas cooler.
  • Identifiant de la fiche : 30007140
  • Langues : Anglais
  • Source : 2012 Purdue Conferences. 14th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 16/07/2012

Liens


Voir d'autres communications du même compte rendu (195)
Voir le compte rendu de la conférence

Indexation