Influence of groundwater flow in fractured aquifers on standing column wells performance. (November 2015)

• Record Type: Journal Article
• Authors: Nguyen, A.; Pasquier, P.; Marcotte, D.
• Is Part Of: Geothermics. Volume 58(2015:Nov.)
• Page Start: 39
• Page End: 48
• Publication Date: 2015-11
• Subjects: Standing column well -- Ground heat exchanger -- Thermal resistance -- Geoexchange -- Groundwater flow -- Fractured aquifers; Hydrogeology -- Periodicals; Geothermal resources -- Periodicals; Énergie géothermique -- Périodiques; GEOTHERMAL ENGINEERING; GEOTHERMAL ENERGY; GEOTHERMAL EXPLORATION; Geothermal resources; Hydrogeology; Periodicals; Electronic journals; 621.44
• DOI: 10.1016/j.geothermics.2015.08.005
• Languages: English
• ISSNs: 0375-6505

Abstract

Abstract : Highlights: A new numerical coupled ODE model for standing column wells. The model couples heat transfer and groundwater flow. The standing column well is modeled by means of a resistance and capacity network. The model considers groundwater flow in fracture zones. The iterative algorithm is convergent and efficient. Abstract: A coupled model of a standing column well is developed to evaluate the influence of groundwater flow in fractured aquifers. Heat transfer and groundwater flow within a standing column well and its surrounding ground is modeled by means of a resistance and capacity network. The work demonstrates that the presence of a single fracture zone embedded within the bedrock has a significant beneficial effect on the performance of standing column wells. Temperature differences between the homogeneous and fractured aquifer were particularly important when the well was operated at typical bleed ratios. The results show that the model developed in this paper is in good agreement with numerical reference solutions.