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Fast calculation method for performance upper-limit of (quasi) two-stage vapour compression system.

Méthode de calcul rapide de la limite supérieure de performance d’un système à (quasi) compression de vapeur bi-étagée.

Numéro : 1128

Auteurs : YANG X., WANG B., CHENG Z.

Résumé

(Quasi) two-stage system is an important method to improve the energy efficiency of vapour compression refrigeration cycle, especially under high compression ratio. Since vapour injection was proposed for room air conditioners, many researches were conducted to study the performance of the vapour injection system and the factors that affected the performance of system. Many experiments and simulations were conducted to investigate the performance of two-stage compression or gas injected systems. However, the performance improvements reported by different researches vary in a large range due to different systems, refrigerants, operating conditions or methods. These results are barely comparable, which is not good for distinguishing the wrongs or drawbacks in design or control of the system. Therefore, it is important to propose a method which can quickly obtain the performance upper-limit of different refrigeration under different operating conditions in order to evaluate the research conclusions. In this research, general analytical expressions of (quasi) two-stage vapour compression cycle are proposed and verified to quickly calculate the upper-limit performance of (quasi) two-stage systems.

Documents disponibles

Format PDF

Pages : 8

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 : Fast calculation method for performance upper-limit of (quasi) two-stage vapour compression system.
  • Identifiant de la fiche : 30027654
  • Langues : Anglais
  • Source : IIR Rankine Conference 2020.
  • Date d'édition : 31/07/2020
  • DOI : http://dx.doi.org/10.18462/iir.rankine.2020.1128

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