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Comparaison du comportement transitoire des évaporateurs à microcanaux à tubes ailetés.

Comparison of the transient behavior of microchannel and fin-and-tube evaporators.

Auteurs : MADER G., FÖSEL G. P. F., LARSEN L. F. S.

Type d'article : Article, Article de la RIF

Résumé

The development of control algorithms for refrigeration systems requires models capable of simulating transient behavior with sensible computational time and effort. The most pronounced dynamics in these systems are found in the condenser and the evaporator, especially the transient behavior of the evaporator is of great importance when designing and tuning controllers for refrigeration systems. Various so called moving boundary models were developed for capturing these dynamics and showed to cover the important characteristics. A factor that has significant influence on the time constant and nonlinear behavior of a system is the amount of refrigerant charge in the evaporator which is considerably reduced when microchannel heat exchangers are utilized. Here a moving boundary model is used and adapted to simulate and compare the transient behavior of a microchannel evaporator with a fin-and-tube evaporator for a residential air-conditioning system. The results are validated experimentally at a test rig.

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Format PDF

Pages : 1222-1229

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    20 €

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Détails

  • Titre original : Comparison of the transient behavior of microchannel and fin-and-tube evaporators.
  • Identifiant de la fiche : 30000961
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 34 - n. 5
  • Date d'édition : 08/2011

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