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Analyse thermodynamique des couples actifs R22-DMF, R134a-DMETEG et NH3-H2O pour améliorer la compression de vapeur dans les applications de conditionnement d'air.

A thermodynamic investigation of the R22-DMF, R134a-DMETEG and NH3-H2O working pairs for enhanced vapour compression via a solution circuit in air-conditioning applications.

Auteurs : PATNAIK V., SCHULTZ K. J., XIA P.

Résumé

The efficiency of the vapour compression refrigeration cycle can be improved upon (4 to 7%); efficiency was improved by adding a solution circuit to the conventional cycle with internal heat exchange. A detailed thermodynamic analysis with different working fluid pairs revealed that this is the consequence of the resulting lower head pressure at the level of the compressor, the temperature glide in the phase-change components of the cycle and, to the least extent, the heat of absorption/desorption involved in a two-fluid system. The performance of the hybrid cycle with these fluid pairs was benchmarked against that of R123.

Détails

  • Titre original : A thermodynamic investigation of the R22-DMF, R134a-DMETEG and NH3-H2O working pairs for enhanced vapour compression via a solution circuit in air-conditioning applications.
  • Identifiant de la fiche : 2004-0710
  • Langues : Anglais
  • Source : Proceedings of the International Sorption Heat Pump Conference.
  • Date d'édition : 24/09/2002
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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