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Détermination des charges de dégivrage des batteries d'échange. Parties 1 à 5.

Determination of coil defrosting loads. Parts 1 to 5.

Auteurs : MUTAWA N. K. al-, SHERIF S. A., et al.

Résumé

The heat loads associated with defrosting industrial freezer coils have not been fully quantified as a function of the various parameters that affect the system. The current ASHRAE recommendation is to simply assume that the coil defrosting load is a part of the refrigeration equipment-related load, which, at freezer temperatures, may exceed 15% of the net refrigeration load. There is no direction as to how the designer may determine what the actual defrosting load may be. In response to this need, ASHRAE launched a research project, RP-622, and a special test apparatus was designed and constructed to achieve a set of well-defined objectives. The paper provides a detailed description of this experimental test facility in order to serve as a stand-alone reference for research conducted employing this facility. The other parts deal with instrumentation, achievement of tests, refrigeration/defrost cycle dynamics and discussion of results.

Détails

  • Titre original : Determination of coil defrosting loads. Parts 1 to 5.
  • Identifiant de la fiche : 1999-2934
  • Langues : Anglais
  • Source : ASHRAE Transactions. 1998 Winter Meeting, San Francisco, CA.
  • Date d'édition : 1998
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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