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Régulation de la puissance frigorifique d'un compresseur : évaluation de la performance des substituts du R22.

An evaluation of R22 substitutes performances regulating continuously the compressor refrigeration capacity.

Auteurs : APREA C., MASTRULLO R., RENNO C., et al.

Type d'article : Article

Résumé

This article presents the results of an experimental analysis which compares, in terms of energetic performances, the refrigeration capacity control obtained by means of a variable-speed compressor with the on/off control deriving from a classical thermostatic device. The compressor considered is semi-hermetic reciprocating and is a component of a vapour compression refrigeration plant subjected to a commercially available cold store. The compressor working with the fluids R22, R507 and R407C and designed for a revolution speed corresponding to the compressor supply current nominal frequency of 50 Hz, has been tested varying the frequency in the range 30-50 Hz. The results show that, using R407C, it is possible to reach an energy consumption about 12% smaller when an inverter is employed to control the compressor refrigeration capacity instead of thermostatic control. R407C thus confirms its superiority in comparison with R417A and R507; only R22 shows a better performance.

Détails

  • Titre original : An evaluation of R22 substitutes performances regulating continuously the compressor refrigeration capacity.
  • Identifiant de la fiche : 2004-1582
  • Langues : Anglais
  • Source : Applied Thermal Engineering - vol. 24 - n. 1
  • Date d'édition : 01/2004

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