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Pompes à chaleur air-eau réversibles: performances annuelles dans les immeubles résidentiels.

Reversible air-to-water heat pumps: annual performances in residential buildings.

Numéro : pap. n. 119

Auteurs : MADONNA F., BAZZOCCHI F.

Résumé

The HVAC sector is paying a growing interest to the use of heat pump systems, which are able to produce relevant energy savings and to contribute to reaching the goal of a nearly zero energy building (NZEB). However there is still a lot of uncertainty on heat pumps’ actual performances in real life: indeed, the same unit could have a very different efficiency depending on local climate, settings, building characteristics and user behaviour. In order to investigate these effects, focusing on air-to-water heat pumps providing both space heating and cooling in small residential buildings, a field trial monitoring campaign was conducted on a “state of the art” unit. A model that simulates heat pump hourly efficiency was developed based on the data obtained from this in a field campaign and used to predict the behaviour, both in heating and in cooling mode, of similar heat pumps installed in a set of residential buildings located in different Italian cities. The study highlights how the climate and the building typology and age influence annual performances; in particular the role of the ratio between heating and cooling peak load and the benefits coming from a weather compensation strategy are discussed.

Documents disponibles

Format PDF

Pages : 11 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Reversible air-to-water heat pumps: annual performances in residential buildings.
  • Identifiant de la fiche : 30008663
  • Langues : Anglais
  • Source : Clima 2013. 11th REHVA World Congress and 8th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings.
  • Date d'édition : 16/06/2013

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