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Document IIF

Analyse expérimentale de l’exploitation parallèle de deux sources de chaleur dans une pompe à chaleur à double source équipée de deux compresseurs.

Experimental analysis of parallel operation of two heat sources in a dual-source heat pump incorporating two compressors.

Auteurs : REUM T., SCHMITT D., SUMM T., TRINKL C., OCHS F., SCHRAG T.

Type d'article : Article de la RIF

Résumé

Dual-source heat pumps have the potential to improve heating efficiency and / or the space required for heat sources. Parallel operation of two heat sources using two compressors can increase these benefits but poses technological challenges – specifically in the increased refrigerant cycle interconnection complexity, refrigerant and compressor oil management. These benefits and challenges have yet to be thoroughly investigated which is the primary objective of this research paper. An experimental analysis was conducted on a dual-source heat pump that utilized both an air heat source and a ground heat source. It included both individual and parallel operation modes of the heat sources. A prototype with a novel two-compressor interconnection was designed, manufactured, and tested in laboratory conditions. Analysis of the energetic benefit included efficiency evaluation at different ambient conditions and the corresponding loads on the ground source heat exchanger. Energetically, the single source operation showed comparable results in the coefficient of performance to conventional heat pumps despite the increased interconnection complexity. Parallel operation could efficiently cover heating loads at reduced load on the individual heat sources (at -7 °C, a reduction to 41 % on the ground-source and 58 % on the air-source heat exchanger). Technological challenges were highlighted in refrigerant and compressor oil shifts. While a control-based solution for the refrigerant shift was demonstrated, the oil shift requires further analysis of oil conditions in failing compressors.

Documents disponibles

Format PDF

Pages : 124-138

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 : Experimental analysis of parallel operation of two heat sources in a dual-source heat pump incorporating two compressors.
  • Identifiant de la fiche : 30033546
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 171
  • Date d'édition : 03/2025
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2024.12.013

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