Publications Scientifiques

[ Article ] Experimental analysis of a direct expansion geothermal heat pump in heating mode

Date de soumission: 22-02-2018
Année de Publication: 2014
Entité/Laboratoire Autres laboratoires
Document type : Article
Discipline(s) : Energie
Titre Experimental analysis of a direct expansion geothermal heat pump in heating mode
Auteurs FANNOU JEAN LOUIS COMLAN [1], Rousseau Clément [2], Lamarche Louis [3], Stanislaw Kajl [4],
Journal: ENERGY AND BUILDING
Catégorie Journal: Internationale
Impact factor: 2.93
Volume Journal: 75
DOI: http://dx.doi.org/10.1016/j.enbuild.2014.02.026
Resume In this study, we present an experimental analysis of a direct expansion (DX) geothermal heat pump (GHP) installed in the Thermal Technology Center (TTC) of the École de technologie supérieure in Montreal. The residential heating system studied consists of three geothermal 30 m deep wells, which use R22 as refrigerant. During the test campaign, which ran over a one-month period in early spring, the coefficient of performance of the heat pump varied between 2.70 and 3.44, with a daily average of 2.87. The heating capacity reached a daily average of 8.04 kW, for a cooling water constant volumetric flow rate of 0.38 L s−1. The mean the ground heat extraction rate from was 58.2 W m−1. The tests performed helped to highlight a pressure drop coupled with a relatively large superheating revealing a flow rate mal-distribution in geothermal evaporators. The effects of some factors (condenser cooling water inlet temperature, condensing temperature, pressure drop in the evaporator, thermal properties of soil and grout) that affect DX system performance are also presented. Finally, a comparative study between the use of electricity and the DX heat pump as home heating source shows that the DX heat pump provides savings of approximately 70% over the electricity.
Mots clés Geothermal; Heat pump; Direct expansion (DX); Heating capacity; Heat extraction rate; Coefficient of performance; Electricity
Pages 290 - 300
Fichier (PDF)

Publications par entité

  • Centre de Formation et de Recherche en matière de Population (CEFORP) (15)
  • Centre Interfacultaire de Formation et de Recherche en Environnement pour le Développement Durable (CIFRED) (18)
  • Chaire Internationale en Physique Mathématique et Applications (CIPMA-Chaire UNESCO) (16)
  • Ecole Nationale d'Administration et de Magistrature (ENAM) (44)
  • Ecole Nationle d'Economie Appliquée et de Management (72)
  • Ecole Normale Supérieure (23)
  • Ecole Polytechnique d'Abomey-Calavi (EPAC) (834)
  • Faculté de droit et de Science Politique (FADESP) (45)
  • Faculté des Lettres et Sciences Humaines (FLASH) (789)
  • Faculté des Sciences Agronomiques (1376)
  • Faculté des Sciences de la Santé (FSS) (1613)
  • Faculté des Sciences Economiques et de Gestion (FASEG) (136)
  • Faculté des Sciences et Techniques (FAST) (748)
  • Faculté des Sciences Humaines et Sociales (FASHS) (16)
  • Institut de Formation et de Recherche en Informatique (IFRI) (68)
  • Institut de Mathématiques et de Sciences Physiques (IMSP) (61)
  • Institut National de l'Eau (INE) (13)
  • INSTITUT NATIONAL DE LA JEUNESSE DE L’EDUCATION PHYSIQUE ET SPORT(INJEPS) (191)
  • Institut National des Métiers d'Art d'Archéologie et de la Culture (INMAAC) (4)
  • Institut Régional de Santé Publique (IRSP) (51)

Publications par sexe

  • Femme( 908 )
  • Homme (