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Document IIF

Facteurs d'influence de la distribution de l'écoulement et méthode de compensation de la conduite d'alimentation dans les évaporateurs multicircuits.

Influence factors of flow distribution and a feeder tube compensation method in multi-circuit evaporators.

Auteurs : WANG D., LIU C., YU D.

Type d'article : Article, Article de la RIF

Résumé

This study investigates four influence factors of flow distribution in multi-circuit evaporators with distributor, including distributor inlet tube length, inclination angle, uneven airflow, and feeder tube length. Experimental tests and numerical simulations were carried out to evaluate the effect of these factors on superheat uniformity and refrigerant distribution performance. Additionally, a feeder tube compensation method for optimizing refrigerant distribution is presented that involves pressure drop fine-tuning of the feeder tube in each circuit coupled with a main expansion device to obtain more uniform superheat performance at all circuit outlets. To adopt this method, a model was developed to predict the best feeder tube length for each circuit. Experimental results show that when using feeder tubes with predicted lengths in condition of uneven airflow, the superheat uniformity was improved significantly, and up to 35% evaporator cooling capacity could be enhanced when airflow non-uniformity coefficient (Fair)(Fair) was 0.6.

Documents disponibles

Format PDF

Pages : 11-23

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 : Influence factors of flow distribution and a feeder tube compensation method in multi-circuit evaporators.
  • Identifiant de la fiche : 30019830
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 73
  • Date d'édition : 01/2017

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