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Etude sur trois formes d'équation des quantités de mouvement dans la modélisation des systèmes frigorifiques domestiques.

On three forms of momentum equation in transient modelling of residential refrigeration systems.

Auteurs : ZHANG W. J., ZHANG C. L., DING G. L.

Type d'article : Article, Article de la RIF

Résumé

The transient model of thermal components usually consists of three basic governing equations: continuity equation, energy equation, and momentum equation. For different reasons, the momentum equation is used in three different forms: transient, steady-state, and zero pressure drop. In this paper, the three forms of momentum equation are numerically studied and compared at both component level and system level, particularly in the residential applications. It is found that the results with transient and steady-state momentum equation are pretty close at both levels. Therefore, the steady-state momentum equation is recommended in refrigeration system and component transient modelling because of the robustness and the computation speed. To consider only the system-level cases, it is also found that the transient results without pressure drop give very close estimation of control parameters in comparison with the results taking account into the transient or steady-state pressure drop.

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Pages : 938-944

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Détails

  • Titre original : On three forms of momentum equation in transient modelling of residential refrigeration systems.
  • Identifiant de la fiche : 2009-1457
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 32 - n. 5
  • Date d'édition : 08/2009
  • Notes :

    + Erratum: vol. 33; n. 4; 2010.06; p. 886.


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