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Document IIF

Évaluation de l'efficacité d'un compresseur miniature multiétagé dans des conditions de refroidissement insuffisantes entre les étages.

Efficiency evaluation of a miniature multi-stage compressor under insufficient inter-stage cooling conditions.

Auteurs : LIU Y., MIAO N., DENG Y., et al.

Type d'article : Article, Article de la RIF

Résumé

A miniature multi-stage compressor (MMSC) with an integrated inter-stage cooler has been proposed. This study aims to evaluate the efficiency of each stage of the MMSC under insufficient inter-stage cooling conditions through numerical simulation. The results show that the volumetric efficiency of first-stage, second-stage, third-stage and fourth-stage reduced by an average of 1.43%, 1.86%, 2.32%, and 2.56% respectively as suction temperature increases every 10°C, indicating that the temperature has more remarkable influences on the volumetric efficiency with the increase of pressure and the decrease of cylinder diameter. For every 10°C increase in temperature, the isentropic efficiencies are all reduced by about 1%. And it should be noted that when the suction temperatures of the second, third, fourth stage cylinder exceed 120°C, 70°C, and 50°C, respectively, the valve flutters severely, indicating that the valve has a poor applicability to the current operating conditions.

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Format PDF

Pages : 169-179

Disponible

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    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 : Efficiency evaluation of a miniature multi-stage compressor under insufficient inter-stage cooling conditions.
  • Identifiant de la fiche : 30025357
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 97
  • Date d'édition : 01/2019
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2018.09.009

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