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La concurrence entre les frigorigènes naturels et synthétiques : contributions à l'art et à la science des systèmes thermiques.

Competition between synthetic and natural refrigerants: contributions to the art and science of thermal systems.

Auteurs : HRNJAK P. S.

Résumé

This paper presents an overview of expectations as we begin to reconsider CO2 systems versus those using R134a and other synthetic refrigerants and discusses the effects of thermodynamic properties on cycle performance and thermophysical considerations on the system. A brief overview of the results of the alternative refrigerant Cooperative Research Program (CRP) of SAE International - probably the most comprehensive and fair experimental comparative analysis for mobile air-conditioning (MAC) systems - is used as an illustration of the approach and provides real results. We also present the influence of the development of CO2 technologies on R134a systems, i.e., transfer of technology. Finally, the author presents the progression of MAC system performance with the clear statement that the differences among refrigerants in same-size systems were significantly smaller than the improvement of all systems. Regardless of the outcome, the beneficiaries of the competition are the entire professional community and humanity as a whole.

Documents disponibles

Format PDF

Pages : 2009-5

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 : Competition between synthetic and natural refrigerants: contributions to the art and science of thermal systems.
  • Identifiant de la fiche : 2009-1891
  • Langues : Anglais
  • Sujet : Technologie, Généralités
  • Source : 3rd Conference on Thermophysical Properties and Transfer Processes of Refrigerants
  • Date d'édition : 23/06/2009

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