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Energy savings thanks to advanced command control on reciprocal compressor chilled-water production group.

Economies d'énergie grâce au contrôle/commande de pointe sur les groupes de production d'eau glacée à compresseurs à piston.

Author(s) : FALLAHSOHI H., CHANGENET C., PLACÉ S., et al.

Type of article: Article

Summary

An advanced control method is proposed to regulate the evaporator superheat, the condensing pressure and the cooling capacity of a variable-speed refrigeration system. This method is based on the physical modelling of the machine in order to determine parameters needed for the use of advanced control (gain, time constant). Some experiments were performed on o refrigeration unit by changing cooling loads. It is shown that advanced control succeeds in maintaining a precise chilled liquid temperature. As this controller appears to be a lot more robust from disturbances point of view than a conventional proportional-integral-derivative controller, the superheat may be reduced in a significant extent and this advanced control leads to an increase in the coefficient of performance.

Details

  • Original title: Economies d'énergie grâce au contrôle/commande de pointe sur les groupes de production d'eau glacée à compresseurs à piston.
  • Record ID : 2010-1866
  • Languages: French
  • Subject: Regulation
  • Source: Revue générale du Froid & du Conditionnement d'air - vol. 100 - n. 1108
  • Publication date: 2010/11

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