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Étude expérimentale des caractéristiques de distribution de l’écoulement du frigorigène des échangeurs thermiques et de leur effet sur la performance du système résidentiel de conditionnement d’air à pompe à chaleur.

Experimental investigation of the refrigerant flow distribution characteristic of heat exchangers on the residential heat pump air conditioner system performance.

Numéro : pap. 2461

Auteurs : TU X., LIANG X., YANG R., et al.

Résumé

In this study, the refrigerant flow distribution characteristic of fin-and-tube heat exchanger used as outdoor and indoor heat exchanger of a residential heat pump air conditioner was experimentally studied and analyzed. The outdoor heat exchanger included “n shape” 1 -circuit, 2-circuit and 3-circuit arrangements, and the indoor heat exchangers were only “n shape” 2–cirucuit arrangement. It showed that the refrigerant flow distribution of both outdoor and indoor heat exchanger had greatly influenced the system performance change of the residential heat pump air conditioner. The refrigerant flow distribution which was be expressed with the temperature difference value of each circuit exit superheat as evaporator with no significant effect on system performance had been obtained both under cooling mode and heating mode. The temperature difference value was nearly the same at various test conditions and can be considered as 2K. According to the experimental results, the system performance under heating mode especially for rated heating mode was the most sensitive with refrigerant flow distribution characteristic. The degradation of rating heating capacity and COP reached 26% and 14% due to refrigerant flow mal-distribution of indoor and outdoor heat exchanger. On the basis of discussion, the adjustment of refrigerant distribution characteristic of both the outdoor and indoor heat exchanger should mainly be operated on the rated heating mode.

Documents disponibles

Format PDF

Pages : 13 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 : Experimental investigation of the refrigerant flow distribution characteristic of heat exchangers on the residential heat pump air conditioner system performance.
  • Identifiant de la fiche : 30018624
  • Langues : Anglais
  • Source : 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 11/07/2016

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