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Capacity control in ground source heat pump systems part II: / Hatef Madani in International journal of refrigeration, Vol. 34 N° 8 (Décembre 2011) 

Public ISBD [article]  in International journal of refrigeration > Vol. 34 N° 8 (Décembre 2011) . - pp. 1934–1942 Titre : Capacity control in ground source heat pump systems part II: : Comparative analysis between on/off controlled and variable capacity systems Titre original : Régulation de la puissance des pompes à chaleur sol-eau. Partie II : analyse comparative des systèmes régulés de façon tout ou rien et des systèmes à puissance variable Type de document : texte imprimé Auteurs : Hatef Madani, Auteur ; Joachim Claesson, Auteur ; Per Lundqvist, Auteur Année de publication : 2012 Article en page(s) : pp. 1934–1942 Note générale : Génie mécanique Langues : Anglais (eng) Mots-clés : Heat  pump  Control  Modelling  Simulation  Variable  speed Résumé : In the present paper, as the second part of two, modeling 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 modeling showed that dimensioning of the on/off controlled GSHP based on the peak heat demand of the building plays a significant role when the two control strategies are compared: if the on/off controlled GSHP is dimensioned to cover only 55% of the peak heat demand of the building, the electrical auxiliary, which then covers about 10% of the annual heating demand of the building, makes the SPF of the on/off controlled GSHP to be lower than the one of the variable speed system. On the contrary, when the on/off controlled system is dimensioned to cover more than 65% of the building’s peak heat demand, i.e. more than 95% of the annual heat demand of the building, there is no considerable difference between the SPFs of the on/off controlled and variable capacity systems. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711001186 [article] Capacity control in ground source heat pump systems part II: = Régulation de la puissance des pompes à chaleur sol-eau. Partie II : analyse comparative des systèmes régulés de façon tout ou rien et des systèmes à puissance variable : Comparative analysis between on/off controlled and variable capacity systems [texte imprimé] / Hatef Madani, Auteur ; Joachim Claesson, Auteur ; Per Lundqvist, Auteur . - 2012 . - pp. 1934–1942. Génie mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 34 N° 8 (Décembre 2011) . - pp. 1934–1942 Mots-clés : Heat  pump  Control  Modelling  Simulation  Variable  speed Résumé : In the present paper, as the second part of two, modeling 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 modeling showed that dimensioning of the on/off controlled GSHP based on the peak heat demand of the building plays a significant role when the two control strategies are compared: if the on/off controlled GSHP is dimensioned to cover only 55% of the peak heat demand of the building, the electrical auxiliary, which then covers about 10% of the annual heating demand of the building, makes the SPF of the on/off controlled GSHP to be lower than the one of the variable speed system. On the contrary, when the on/off controlled system is dimensioned to cover more than 65% of the building’s peak heat demand, i.e. more than 95% of the annual heat demand of the building, there is no considerable difference between the SPFs of the on/off controlled and variable capacity systems. ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711001186