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La présence de contaminants dans les frigorigènes et leur impact sur le cycle frigorifique.

Presence of contaminants in refrigerant and their effect on refrigeration cycle.

Numéro : pap. ID: 390

Auteurs : SKRZYNIOWSKA D.

Résumé

Refrigerant is a medium used in refrigeration cycle. Until now in thermodynamic models and calculations of refrigerant is not considered with lubricant and moist air but as an ideal pure gas (without any contaminants). This is also the case in refrigeration cycle where the refrigerant is very often considered as an ideal one. Lubricant, air and water vapour are not considered in thermodynamic calculations in spite of their existence. The problems in the existing research are summarized. A further study is suggested on refrigerant systems. This circulation of such contaminants is at the origin of a deviation from a theoretical behaviour. This article aims at reviewing the researches of oil- refrigerant, air-refrigerant, moist airrefrigerant or oil-moist air-refrigerant mixtures and focuses particularly on mixture enthalpy calculation. This paper deals with the description of the real mixture of refrigerant and contaminants (lubricant, water, moist air other remains of refrigerants (at elevated pressures and temperatures) which flow in a refrigerating cycle and the main point of this paper is to appoint thermodynamic parameters of such a mixture using the thermodynamic formulas.

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Pages : 8 p.

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Détails

  • Titre original : Presence of contaminants in refrigerant and their effect on refrigeration cycle.
  • Identifiant de la fiche : 30002794
  • Langues : Anglais
  • Source : Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
  • Date d'édition : 21/08/2011

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