Partager

Systèmes de pompe à chaleur à saumure-eau au CO2 pour le chauffage et le refroidissement d'immeubles non résidentiels.

Brine-to-water CO2 heat pump systems for heating and cooling of non-residential buildings.

Auteurs : STENE J.

Type d'article : Article

Résumé

Carbon dioxide (CO2) has been identified as an interesting working fluid in brine-to-water heat pumps for heating and cooling of non-residential buildings. Connecting such a heat pump in series with a hydronic radiator and ventilation heater system provides a relatively low return temperature in the system, and thus favourable operating conditions for a CO2 heat pump. Preheating and reheating of domestic hot water will lead to a further increase in the COP of the CO2 heat pump system. Computer simulations have demonstratedthat a CO2 heat pump system in non-residential buildings can achieve the same or higher seasonal performance factor (SPF) than heat pumps using conventional working fluids, as long as the heat distribution system is designed for a low return temperature. The operational time of the ventilation system will have a major impact on the SPF of the CO2 heat pump, since the return temperature in the heat distribution system is considerably lower when the ventilation system is in operation.

Détails

  • Titre original : Brine-to-water CO2 heat pump systems for heating and cooling of non-residential buildings.
  • Identifiant de la fiche : 2007-0841
  • Langues : Anglais
  • Source : IEA HPC Newsl. - vol. 24 - n. 3
  • Date d'édition : 2006

Liens


Voir d'autres articles du même numéro (5)
Voir la source

Indexation