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Etude théorique d'une nouvelle proposition d'écofrigorigène : le R404A et diméthyléther.

Theoretical study of a new eco-refrigerant proposal: R404A and dimethylether blend.

Auteurs : POPESCU G., APOSTOL V., POP H., et al.

Résumé

The paper presents the results of a theoretical thermodynamic study carried out for a single-stage vapour compression refrigeration system using a near-zeotropic refrigerant blend between R404A and dimethylether (DME). This study is aligned to the present research strategy of finding new solutions regarding the phase out of pollutant refrigerants. By mixing R404A with DME the operating disadvantages of R404A (high saturation pressure, low mass heat load) and those of DME (high specific work input, high specific volume at the compressor inlet, flammable and explosive) are diminished. In order to establish the optimal blend DME mass fraction, a comparative thermodynamic study is carried out. REFPROP software has been used to determine the blend thermodynamic properties. The results point out the advantages of R404A substitution with the new proposed refrigerant having (40-55)% DME mass fraction.

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Pages : 2008-2

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Détails

  • Titre original : Theoretical study of a new eco-refrigerant proposal: R404A and dimethylether blend.
  • Identifiant de la fiche : 2009-0536
  • Langues : Anglais
  • Source : 8th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2008)
  • Date d'édition : 07/09/2008

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