Numerical investigation of long-term operation of ground-source heat pumps at neighborhood level: Focus on thermal interactions and electricity consumption - BRGM - Bureau de recherches géologiques et minières Access content directly
Journal Articles Geothermics Year : 2021

Numerical investigation of long-term operation of ground-source heat pumps at neighborhood level: Focus on thermal interactions and electricity consumption

Abstract

A comprehensive numerical investigation of long-term operation of Ground-Sourced Heat Pumps through Borehole Heat Exchangers is presented. Thermal fluxes between systems are analyzed through a semi-analytical method based on line source models. Operation points of geothermal and backup systems are determined by an hourly-based non-linear constrained optimization. Simulations of a 12-buildings neighborhood demonstrated that middle-buildings experience higher electrical consumptions than corner-buildings. Thermal interactions could be interferences or synergies decreasing or increasing GSHP performances, respectively, depending mainly on heating/cooling balance. Parametrical study showed that low Darcy velocities, insulated ground surface, shorter heat-exchangers, and denser and compact neighborhoods enhance thermal interactions impacts.

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Earth Sciences
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Origin : Publication funded by an institution

Dates and versions

hal-03744857 , version 1 (03-08-2022)

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Mohamad Ali Jaafar, Charles Maragna. Numerical investigation of long-term operation of ground-source heat pumps at neighborhood level: Focus on thermal interactions and electricity consumption. Geothermics, 2021, 96, pp.102172. ⟨10.1016/j.geothermics.2021.102172⟩. ⟨hal-03744857⟩

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