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Document IIF

Stratégie de contrôle coopératif de la température d’évaporation variable et de la surchauffe dans un système à débit de frigorigène variable, induite par la demande de puissance frigorifique.

Cooling capacity demand-induced cooperative control strategy of variable evaporating temperature and superheat in a VRF system.

Numéro : 0226

Auteurs : CAO H., ZHUANG D., LEI J., DING G., HUANG Z., LI S., LI J., ZHANG H.

Résumé

A variable refrigerant flow system has the advantage of controlling multiple indoor units simultaneously so it has been widely applied in commercial and residential buildings. In existing VRF systems, evaporating temperature and superheat are controlled to be constant, resulting in obvious temperature fluctuation and large energy consumption. In order to improve indoor temperature stability and energy efficiency, a cooperative control strategy of variable evaporating temperature and superheat is developed in this study. The evaporating temperature is raised according to the maximum cooling capacity demand and the superheat of each indoor unit is continuously regulated. The proposed control strategy is applied in a VRF system instead of a common control strategy, and an environmental laboratory is built to verify the temperature control accuracy and power consumption. Experimental results show that room temperatures are all controlled within ±0.5 °C of set values, and power consumption is reduced by 51% at most.

Documents disponibles

Format PDF

Pages : 14 p.

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 : Cooling capacity demand-induced cooperative control strategy of variable evaporating temperature and superheat in a VRF system.
  • Identifiant de la fiche : 30031713
  • Langues : Anglais
  • Sujet : Technologie
  • Source : Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
  • Date d'édition : 21/08/2023
  • DOI : http://dx.doi.org/10.18462/iir.icr.2023.0226

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