Partager

Analyse énergétique, exergétique et expérimentale d’un échangeur de chaleur à absorption utilisé comme sous-station de transfert dans un réseau de chauffage urbain préexistant

An energetical, exergetical and experimental analysis of an absorption-heat exchanger used as transfer sub-station in an already existing district heating grid.

Numéro : 0199

Auteurs : ZOTTER G., EBERHÖFER D., SEIDNITZER-GALLIEN C.

Résumé

The application of an absorption-heat exchangers as transfer sub-station in a district heating grid can use the temperature difference between the primary (up to145 °C) and secondary supply temperature (ca. 70 °C) of the circuits for subcooling the primary return temperature below the secondary one. This leads to the advantages of increased heat capacity within an existing grid up to 30% at unchanged flow and temperature inlet conditions on the one hand-side, and on the other hand-side, more renewables can be more easily integrated. To proof the required temperature gap between the two supply temperatures to ensure a subcooling of the primary return flow temperature below the secondary one has been experimentally investigated by a small pilot-scaled absorption-heat exchangers (about 10 kW max) at the laboratory of AEE INTEC at different inlet conditions. This analysis has shown that a subcooling up to 20.7 K is achievable between the return temperatures with an AHX at highly primary supply and low secondary return temperatures as long the mass flow of the secondary grid gets increased accordingly to the heat capacity increase.

Documents disponibles

Format PDF

Pages : 10 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 : An energetical, exergetical and experimental analysis of an absorption-heat exchanger used as transfer sub-station in an already existing district heating grid.
  • Identifiant de la fiche : 30031103
  • 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