Modeling and Experimental Validation of A Transient Direct Expansion Heat Pump

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AuteurROUSSEAU, CLEMENT
AuteurFANNOU, JEAN LOUIS COMLAN
AuteurLAMARCHE, LOUIS
AuteurSTANISLAW, KAJL
Date d'ajout2026-06-02T16:06:57Z
Date de disponibilite2026-06-02T16:06:57Z
Date de publication2017
ResumeGeothermal heat pump technology is currently one of the most interesting technologies used to heat buildings. There are two designs used in the industry: geothermal heat pump using a secondary ground loop and Direct Expansion (DX) ground source heat pump. The latter is less used, possibly because less research has been carried out for the design of this kind of heat pump. In this paper, a transient model using the Comsol Multiphysic of a DX ground heat pump is presented in heating mode with R22, and a comparison with experimental results is presented with a 24-hour test. It is shown that the model was adequately validated by our experiment with only a maximum difference of 15%. Following this validation, a parametric analysis was realised on the geometry of the borehole. This study concluded that to have the best heat extraction of the ground, the pipes shank spacing need to be important without increasing the borehole diameter.
DOI10.14710/ijred.6.2.145-155
Autre identifiantBECDB-5051
URIhttps://dspace.uac.bj/handle/123456789/4724
Languefr
Fait partie deInt. Journal of Renewable Energy Development (IJRED
SujetDirect expansion geothermal heat pump
SujetModeling
SujetR22
TitreModeling and Experimental Validation of A Transient Direct Expansion Heat Pump
TypeArticle

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