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Evaluation de l'impact de la reconversion d'un refroidisseur d'eau à compresseur centrifuge à vitesse fixe afin qu'il fonctionne par entraînement à vitesse variable.

Measuring the performance of a variable-speed drive retrofit on a fixed-speed centrifugal chiller.

Auteurs : LENARDUZZI F. J., YAP S. S.

Résumé

Variable-speed drives (VSDs) offer many advantages in a heating, ventilating, and air-conditioning (HVAC) system. However, they are seldom used with centrifugal chiller systems. One of the reasons for the low number of VSDs in chiller systems is unfamiliarity with these systems. This research project was initiated to establish a base of accurate and detailed information for building owners and HVAC consultants to realize the benefits of VSDs. A 200 hp variable-speed drive was retrofitted to a 615-kilowatt centrifugal chiller and monitored for one cooling season. Results show that VSD operated without problems during the test period and successfully met the air-conditioning requirements of the building. Energy savings are estimated to be approximately 41% at this particular site. The power quality effects also were studied and do not appear to be a concern. The total harmonic distortion is less than 2.5%.

Détails

  • Titre original : Measuring the performance of a variable-speed drive retrofit on a fixed-speed centrifugal chiller.
  • Identifiant de la fiche : 1999-3786
  • Langues : Anglais
  • Source : ASHRAE Transactions. 1998 annual Meeting, Toronto, Ontario + CD-ROM.
  • Date d'édition : 1998
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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