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Document IIF

Régulation de la détente directe d'un système de conditionnement d'air assurant le contrôle de la température et de l'humidité intérieures. II. Affinage du régulateur grâce à des études supplémentaires destinées à améliorer la sensibilité de la régulation.

A DDC-based capacity controller of a direct expansion (DX) air-conditioning unit for simultaneous indoor air temperature and humidity control. II. Further development of the controller to improve control sensitivity.

Auteurs : LI Z., DENG S.

Type d'article : Article, Article de la RIF

Résumé

The development of the novel direct digital control (DDC)-based capacity controller for a direct expansion (DX) air conditioning (A/C) unit having variable-speed compressor and supply fan to simultaneously control indoor air temperature and relative humidity in a conditioned space served by the DX A/C unit has been reported in Part I of this two-part series (see this Bulletin, reference 2006-3122). The results of preliminary controllability tests for the novel capacity controller presented in Part I, however, suggested that the controller developed was operational, with acceptable control accuracy but rooms for improvement with respect to control sensitivity. This second part reports on the further development of the controller to improve its control sensitivity and the associated controllability test results. Both control accuracy and reasonable control sensitivity were achieved by incorporating a traditional proportional-integral controller into the DDC-based capacity controller.

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Format PDF

Pages : 124-133

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 : A DDC-based capacity controller of a direct expansion (DX) air-conditioning unit for simultaneous indoor air temperature and humidity control. II. Further development of the controller to improve control sensitivity.
  • Identifiant de la fiche : 2006-3123
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 30 - n. 1
  • Date d'édition : 01/2007

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