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Document IIF

Performance thermodynamique des compresseurs à piston et à piston roulant pour application aux pompes à chaleur.

Thermodynamic performance of reciprocating and rolling piston compressors for heat pump application.

Numéro : pap. n. 6

Auteurs : BEZERRA J. G. Jr, DESCHAMPS C. J., SILVA E., et al.

Résumé

The present paper reports a comparative thermodynamic analysis of reciprocating and rolling piston compressors for a 1.4 kW heat pump application. R134a was adopted as the working fluid and the evaporating and condensing temperatures were set to 10°C and 55°C. The main objective was to identify the advantages and disadvantages of each compressor based on estimates of volumetric and isentropic efficiencies. Integral formulations of the conservation equations of mass and energy were used to describe the compression processes of both compressors, including the effects of leakage and gas superheating. In order to guarantee a meaningful analysis, each compressor was optimized for the specified operating condition. The study revealed that the rolling piston compressor performs better than the reciprocating compressor. The major inefficiencies of the reciprocating compressor were found to be associated with the clearance volume and with the suction and discharge processes. Gas superheating and backflow in the suction orifice were identified as critical thermodynamic irreversibilities of the rolling piston compressor.

Documents disponibles

Format PDF

Pages : 8 p.

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 : Thermodynamic performance of reciprocating and rolling piston compressors for heat pump application.
  • Identifiant de la fiche : 30008716
  • Langues : Anglais
  • Source : Compressors 2013: 8th International Conference on Compressors and Coolants.
  • Date d'édition : 02/09/2013

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