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Modèle dynamique d'un cycle à compression de vapeur en fonctionnement marche/arrêt.

A dynamic model of a vapour compression cycle with shut-down and start-up operations.

Auteurs : LI B., ALLEYNE A. G.

Type d'article : Article, Article de la RIF

Résumé

This paper presents an advanced switched modelling approach for vapour compression cycle (VCC) systems used in air conditioning and refrigeration. Building upon recent work, a complete dynamic VCC model is presented that is able to describe the severe transient behaviours in heat exchangers (condenser/evaporator), while maintaining the moving-boundary framework, under compressor shut-down and start-up operations. The heat exchanger models retain a constant structure, but accommodate different model representations. Novel switching schemes between different representations and pseudo-state variables are introduced to accommodate the transitions of dynamic states in heat exchangers while keeping track of the vapour and liquid refrigerant zones during the stop-start transients. Two model validation studies on an experimental system show that the complete dynamic model developed in Matlab/Simulink can well predict the system dynamics in shut-down and start-up transients.

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Pages : pp. 538-552

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Détails

  • Titre original : A dynamic model of a vapour compression cycle with shut-down and start-up operations.
  • Identifiant de la fiche : 2010-0070
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 33 - n. 3
  • Date d'édition : 05/2010

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