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Évaluation de la performance annuelle des systèmes à pompe à chaleur géothermiques : une comparaison entre les systèmes à vitesse unique et à vitesse variable.

Evaluation of the annual performance of ground source heat pump systems: a comparison between single speed and variable speed systems.

Numéro : pap. ID: 843

Auteurs : MADANI H., LUNDQVIST P.

Résumé

In the present paper, modelling and simulation was carried out for a Ground Source Heat Pump (GSHP) system in the presence of all the most important interacting sub-systems such as building, ground heat source, electrical auxiliary heater, and the heat pump unit in order to make a fair and comprehensive comparison between the annual performance of on/off controlled and variable capacity systems. The annual modelling showed that dimensioning of the on/off controlled GSHP based on the peak heat demand of the building plays a significant role when two control strategies are compared: if the on/off controlled GSHP is dimensioned to cover only 57% of the peak heat demand of the building, the electrical auxiliary, which covers about 10% of the annual heating demand of the building, makes the SPF of the on/off controlled GSHP be lower than the one of the variable speed system. On the contrary, when the on/off controlled system is dimensioned to cover about 70% of the building’s peak heat demand, i.e. about 98% of the annual heat demand of the building, the SPF of the on/off controlled system can higher than the variable capacity systems.

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Pages : 8 p.

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Détails

  • Titre original : Evaluation of the annual performance of ground source heat pump systems: a comparison between single speed and variable speed systems.
  • Identifiant de la fiche : 30001830
  • Langues : Anglais
  • Source : Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
  • Date d'édition : 21/08/2011

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