Partager

Évaluation technico-environnementale d’un système de pompe à chaleur ayant pour source l’eau d’une rivière et utilisant une vanne de bipasse des gaz chauds

Techno-environmental evaluation of a river-source heat pump system using a hot gas bypass valve.

Numéro : 0385

Auteurs : CHO H. K., SHIN H. H., HAM S. H., JEONG S. A., PARK K-T., KIM Y.

Résumé

River water-source heat pumps show higher energy efficiency than conventional air-source heat pumps because water has better thermal characteristics than air. However, as the river water temperature decreases in winter, there is a risk of freezing in heat exchangers during the heating season. In this study, the performance of a hybrid heat pump system using a hot gas bypass valve (HBHPS) was compared analytically to that of a conventional hybrid heat pump system (CHHPS). In the HBHPS, the refrigerant flow rate can be controlled by the hot gas bypass valve to decrease the heating capacity, hence reducing the temperature difference of the secondary fluid on the evaporator side. Accordingly, it can increase the heat pump operation time in winter. Mechanical components of the HBHPS were modeled analytically. The performances of the two energy conversion systems were compared through transient simulations based on a water temperature measurement in Han River, South Korea. As a result, the HBHPS showed higher life cycle climate performance than the CHHPS owing to the increase in the heat pump operation time.

Documents disponibles

Format PDF

Pages : 9 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 : Techno-environmental evaluation of a river-source heat pump system using a hot gas bypass valve.
  • Identifiant de la fiche : 30031138
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 14th IEA Heat Pump Conference 2023, Chicago, Illinois.
  • Date d'édition : 15/05/2023

Liens


Voir d'autres communications du même compte rendu (78)
Voir le compte rendu de la conférence

Indexation