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Document IIF

Système de pompe à chaleur à saturation pour des conditions climatiques froides.

A saturation heat pump system for cold climate conditions.

Numéro : 1131

Auteurs : FIX A., GAO L., SEABOURNE T., YANG J., MUEHLBAUER J., HWANG Y., RADERMACHER R.

Résumé

The current state-of-the-art Heat Pump (HP) systems encounter significant challenges in maintaining capacity and efficiency in extremely low-temperature environments. To address these inefficiencies, this paper presents the design of an innovative saturation HP system that incorporates two-phase injection. This advanced saturation cycle mitigates energy losses typically incurred during superheated gas compression and isenthalpic expansion, thus moving closer to the theoretical Carnot efficiency. A high-efficiency cold climate heat pump (CCHP) system is theoretically modeled, and the performance is studied when employing various low-GWP and natural refrigerants. The results show that a two-stage cycle using propane can improve the heating COP by 60% at an ambient temperature of -25℃. The refrigerant injection quality required to meet this performance ranges between 0.7-0.9, depending on the operating conditions and injection stage. Furthermore, the saturation cycle can reduce the final superheat temperature difference by over 100°C, compared to a single-stage heat pump in cold climates.

Documents disponibles

Format PDF

Pages : 12 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 : A saturation heat pump system for cold climate conditions.
  • Identifiant de la fiche : 30032663
  • Langues : Anglais
  • Source : 16th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2024). Proceedings. University of Maryland, College Park, Maryland, USA, August 11-14 2024
  • Date d'édition : 08/2024
  • DOI : http://dx.doi.org/10.18462/iir.gl2024.1131

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