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Effets de la mauvaise distribution de l'écoulement d'air sur les chutes de pression et la performance d'échangeurs de chaleur dans des systèmes des pompes à chaleur résidentielles.

Effect of airflow maldistribution on pressure drop and thermal performance of heat exchangers in residential heat pump systems.

Auteurs : ELGOWAINY A.

Résumé

The effect of nonuniform airflow distribution on the thermal performance of tube-fin heat exchangers in typical outdoor units of residential air-conditioning and heat pump systems is investigated numerically. The impact of the airflow nonuniformity on the pressure drop and fan-motor power requirement is also investigated. Two fin types have been investigated (smooth fins and louvered fins). A three-dimensional model was developed to predict the airflow distribution over the face of the heat exchanger. It was found that the effect of the flow maldistribution is more pronounced on the air-side pressure drop and the fan power requirement than on the thermal performance of the heat exchanger.

Détails

  • Titre original : Effect of airflow maldistribution on pressure drop and thermal performance of heat exchangers in residential heat pump systems.
  • Identifiant de la fiche : 2006-1486
  • Langues : Anglais
  • Source : ASHRAE Transactions. 2003 annual Meeting, Kansas City, Missouri, USA. Volume 109, part 2 + CD-ROM.
  • Date d'édition : 2003

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