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Considérations concernant la substitution du frigorigène R22 dans les systèmes de refroidissement, de conditionnement d'air et les pompes à chaleur.

Aspects regarding the substitution of R22 refrigerating agent in cooling systems, air conditioning and heating pumps.

Numéro : pap. n. 138

Auteurs : DRUGHEAN L., DOBROVICESCU A.

Résumé

The authors perform a comparative analysis, from a theoretical perspective, on the technical performances of a refrigerating system with a mechanical compression; the refrigerating system can function in the fields of industrial cold, air conditioning and heating pumps. The refrigerating agents taken into consideration throughout this study and mentioned in the related scientific literature as potential substitutes for Freon R22 are: R404A; R407C; R410A; R417; R422 A; R424 A; R428; R507.
For the comparative analysis the thermodynamic cycle afferent to each of the refrigerating agents used in the installation was drawn for the same evaporating temperature and different condensing temperatures, respectively 30°C, 40°C and 50°C. The refrigerating installation’s technical performances were expressed based on the following: specific refrigerating capacity, q0v, [kJ/m3], the work volume, lv, [kJ/m3], performance coefficient, EER / COP, [-].Simultaneously, the authors present comparatively the characteristics of each refrigerating agent listed previously with regard to: impact on the environment through Global Warming Potential and Total Equivalent Warming Impact; compatibility with lubrication substances (oil); flashpoints and toxicity.

Documents disponibles

Format PDF

Pages : 8 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Aspects regarding the substitution of R22 refrigerating agent in cooling systems, air conditioning and heating pumps.
  • Identifiant de la fiche : 30008671
  • Langues : Anglais
  • Sujet : Alternatives aux HFC
  • Source : Clima 2013. 11th REHVA World Congress and 8th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings.
  • Date d'édition : 16/06/2013

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