Document IIF
Système à pompe à chaleur résidentiel au CO2 utilisé pour le chauffage et le chauffage d'eau sanitaire.
Residential CO2 heat pump system for combined space heating and hot water heating.
Auteurs : STENE J.
Type d'article : Article, Article de la RIF
Résumé
A theoretical and experimental study has been carried out for a residential brine-to-water CO2 heat pump system for combined space heating and hot water heating. A 6.5 kW prototype heat pump unit is constructed and extensively tested in order to document the performance and to study component and system behaviour over a wide range of operating conditions. The CO2 heat pump is equipped with a unique counter-flow tripartite gas cooler for preheating of domestic hot water (DHW), low-temperature space heating and reheating of DHW. The CO2 heat pump is tested in three different modes: space heating only, DHW heating only and simultaneous space heating and DHW heating. The heat pump unit gives off heat to a floor heating system at supply/return temperatures of 33/28, 35/30 or 40/35 °C, and the set-point temperature for the DHW is 60, 70 or 80 °C. Most tests are carried out at an evaporation temperature of -5 °C, and the average city water temperature is 6.5 °C. The experimental results prove that a brine-to-water CO2 heat pump system may achieve the same or higher seasonal performance factor than the most energy efficient state-of-the-art brine-to-water heat pump systems as long as: 1) the heating demand for hot water production constitutes at least 25% of the total annual heating demand of the residence; 2) the return temperature in the space heating system is about 30 °C or lower; 3) the city water temperature is about 10 °C or lower; and 4) the exergy losses in the DHW tank are small.
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Détails
- Titre original : Residential CO2 heat pump system for combined space heating and hot water heating.
- Identifiant de la fiche : 2006-0969
- Langues : Anglais
- Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 28 - n. 8
- Date d'édition : 12/2005
Liens
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Indexation
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CO2 heat pump for domestic hot water.
- Auteurs : FORNASIERI E., GIROTTO S., MINETTO S.
- Date : 07/09/2008
- Langues : Anglais
- Source : 8th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2008)
- Formats : PDF
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Performance test of a carbon dioxide heat pump ...
- Auteurs : HIHARA E., IDA H.
- Date : 2006
- Langues : Anglais
- Source : IEA HPC Newsl. - vol. 24 - n. 3
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Investigation of a residential brine-to-water C...
- Auteurs : STENE J.
- Date : 17/09/2002
- Langues : Anglais
- Formats : PDF
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Développement d'un système de chauffage d'eau s...
- Auteurs : ZHOU Z.
- Date : 09/2009
- Langues : Chinois
- Source : Refrigeration - vol. 108 - n. 3
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Bomba de calor con CO2 para agua caliente sanit...
- Auteurs : FORNASIERI E., GIROTTO S., MANCINI F., et al.
- Date : 10/2011
- Langues : Espagnol
- Source : Frío Calor Aire acondicionado - vol. 39 - n. 440
- Formats : PDF
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