Document IIF
Analyse expérimentale de l'utilisation d'un sous-refroidisseur couplé à l'évaporateur dans une pompe à chaleur au CO2 eau-eau pour la production d'eau chaude.
Experimental analysis of the use of a subcooler coupled with the evaporator in a water to water CO2 heat pump for hot water generation.
Numéro : 0737
Auteurs : GARCIA CASCALES J. R., ILLÁN GÓMEZ F., SANCHEZ VELASCO F. J., DELGADO MARÍN J. P., OTON MARTINEZ R. A.
Résumé
The use of dedicated mechanical subcooling and/or internal heat exchanger has been promoted as a measure to improve the performance of transcritical CO2 cycles. This paper evaluates the use of a subcooler to improve the performance of a transcritical CO2 heat pump for the production of domestic hot water. This is a refrigerant‐to‐water heat exchanger, which means that the secondary fluid entering this heat exchanger is water coming from the heat source which is initially heated by the refrigerant in this subcooler prior to passing through the evaporator. Firstly the problem is contextualised and the installation used to experimentally analyse the effect of this heat exchanger is presented. The different devices that comprise it are briefly enumerated and the test matrix considered to carry on this study is shown. Three different levels of temperature are considered to define these tests for both the hot water circuit which feeds the evaporator and the cold water circuit that feed the gas cooler. Finally the experimental results obtained are presented and some conclusions are drawn. A slight improvement of the performance due in part to the increase of the evaporation temperature is shown.
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Détails
- Titre original : Experimental analysis of the use of a subcooler coupled with the evaporator in a water to water CO2 heat pump for hot water generation.
- Identifiant de la fiche : 30031460
- 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.2023.0737
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