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Analyse théorique des pertes de cycle dans les systèmes de pompes à chaleur aérothermiques.

Theoretical analysis of cycling losses in air source heat pump systems.

Numéro : 0773

Auteurs : QIAO H., LAUGHMAN C. R.

Résumé

This paper presents quantitative analyses for the cycling losses of air source heat pump systems from a fundamental perspective. First-principles models are developed to facilitate the exploration of cycling characteristics. In this study, cycling performance of two systems (one with a conventional accumulator and the other one with a regenerative accumulator) is compared with different start-up methods. Numerical simulations show that the cycling losses can be reduced by more than 95% if refrigerant migration is prevented during off-cycle. Meanwhile, it is found that regenerative accumulator can greatly reduce the rise time of heating capacity by more than 75%, resulting in 60% reduction in cycling losses.

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Format PDF

Pages : 11

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 : Theoretical analysis of cycling losses in air source heat pump systems.
  • Identifiant de la fiche : 30031464
  • Langues : Anglais
  • Sujet : Technologie
  • Source : Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
  • Date d'édition : 21/08/2023
  • DOI : http://dx.doi.org/10.18462/iir.icr.2023.0773

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