Partager

Une stratégie de régulation à logique floue basée sur une loi proportionnelle et dérivée pour la régulation simultanée de la température et de l'humidité intérieure utilisant un conditionneur d'air à détente directe et à vitesse variable.

A PD law based fuzzy logic control strategy for simultaneous control of indoor temperature and humidity using a variable speed direct expansion air conditioner.

Numéro : pap. 2154

Auteurs : LI Z., XU X. G., DENG S. M., et al.

Résumé

In small to medium scale buildings located in the subtropics, such as Hong Kong, direct expansion air conditioning (DX A/C) systems are widely applied. This is because, as compared to chilled water based central air conditioning systems, DX A/C systems are compact, flexible for multi-room services, energy efficient and cost less to maintain and operate. However, traditionally, a DX A/C system is equipped with a single-speed compressor and supply air fan, and employs ON / OFF control strategy to maintain indoor air temperature only, leaving the indoor moisture content (or relative humidity) uncontrolled. With the introduction of variable speed technology, the speeds of compressor and supply air fan can be varied continuously so as to realize the simultaneous control of the indoor temperature and humidity. In this paper, the development of a novel control strategy based on PD law and fuzzy logic is reported. The compressor speed was adjusted directly according to the indoor air moisture content and supply air fan speed according to the indoor air dry-bulb temperature, respectively, to realize the simultaneous control of indoor air temperature and humidity. Controllability tests for the novel control strategy were carried out and the test results suggested that, although two control loops for temperature and humidity were significantly coupled, the simultaneous control of indoor temperature and humidity was achieved with respect to control accuracy and sensitivity.

Documents disponibles

Format PDF

Pages : 10 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : A PD law based fuzzy logic control strategy for simultaneous control of indoor temperature and humidity using a variable speed direct expansion air conditioner.
  • Identifiant de la fiche : 30013270
  • Langues : Anglais
  • Source : 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 14/07/2014

Liens


Voir d'autres communications du même compte rendu (203)
Voir le compte rendu de la conférence

Indexation