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Document IIF

Vérification de la performance des refroidisseurs d'eau à l'aide de mesures effectuées au sein du circuit frigorifique.

Verifying site performance of water chilling machines by refrigerant-circuit measurements.

Auteurs : BAILEY-MCEWAN M.

Type d'article : Article, Article de la RIF

Résumé

The well-known overall energy balance method is widely used to verify the apparent performance of water chilling machines on site. In harsh environments where the water circuits are liable to contamination, though, the uncertain accuracy of water flow meters renders this method unreliable. Apparent performance should then be verified by confirming measurements in the refrigerant circuit, because this is closed and less liable to contamination. A rigorous method of doing this, accounting for the complexities of large machines, is described. A graphical acceptability plot lucidly depicts the degree of accuracy of the apparent performance. This method has two advantages over merely computing the heat imbalance. It indicates whether a small such imbalance is concealing large but similar errors in the apparent constituents of the heat balance. It also identifies the erroneous such constituents responsible for a large or small heat imbalance. A case study illustrates the method.

Documents disponibles

Format PDF

Pages : 275-283

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 : Verifying site performance of water chilling machines by refrigerant-circuit measurements.
  • Identifiant de la fiche : 2003-1702
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 26 - n. 3
  • Date d'édition : 05/2003

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