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Simulation des systèmes à pompe à chaleur pour le chauffage et le refroidissement d'immeubles à faible consommation d'énergie de chauffage.

Simulation of integrated heat pump systems for heating and cooling of low-heating-energy buildings.

Auteurs : HEINZ A., RIEBERER R.

Résumé

In low-heating-energy buildings, heat pumps have become an attractive heating system, due to a notable reduction of the space heating requirements and the introduction of low temperature heating systems, which enable high efficiencies. Comfort cooling becomes also more interesting in the residential sector, especially in lightweight buildings with large south-oriented windows, which partially tend to overheat in summer. A heat pump has the unique feature that heating and cooling can be provided with the same system and also at the same time (domestic hot water and cooling). Thus an integrated heat pump system with the functions heating, cooling and preparation of domestic hot water is an interesting solution for the energy supply of low-heating-energy buildings. Three different system concepts for integrated heat pump systems have been analyzed in detail by means of simulations. The heat pump cycle was modelled including all heat exchangers and was analyzed concerning the efficiency and possible improvements using different refrigerants (R-134a, R-290, R-744). For further investigations, which will include the construction of a prototype and a detailed dynamic simulation of the system, a brine/water system with the refrigerant R-744 will be used.

Détails

  • Titre original : Simulation of integrated heat pump systems for heating and cooling of low-heating-energy buildings.
  • Identifiant de la fiche : 2009-0862
  • Langues : Anglais
  • Source : 9th IEA Heat Pump Conference 2008: advances and prospects in technology, applications and markets. Conference proceedings [CD-ROM + abstracts].
  • Date d'édition : 20/05/2008

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