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Etude de simulation de la performance d'un écoulement d'eau refroidissant constant ou variable pour un refroidisseur de liquide avec compresseur à spirale sous des conditions de charge partielle.

Simulation study on the performance of constant and variable cooling water flow under part load for a scroll chiller.

Auteurs : JIN X., ZHANG X. S.

Résumé

The chillers are usually loaded partly in the most of running times, and with the development of variable frequency technology, more and more variable-frequency compressors and pumps are used in refrigeration and air-conditioning systems. The steady-state model of the refrigeration cycle is built in this paper, in which the RKS equation is used to calculate the thermophysical parameters accurately. The results show that the influences of constant or variable water flow to the evaporating temperature are little when the chiller is loaded partly, but the condensing temperature decreases in different degrees. The power consumption proportion of the cooling water pump in the chiller should be considered in evaluating energy-saving effect of constant or variable water flow. The higher the proportion, the better the effect of energy-saving of variable water flow system.

Détails

  • Titre original : Simulation study on the performance of constant and variable cooling water flow under part load for a scroll chiller.
  • Identifiant de la fiche : 2009-0305
  • Langues : Anglais
  • Source : Cryogenics and refrigeration. Proceedings of ICCR'2008.
  • Date d'édition : 05/04/2008

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