Modeling the thermal interaction of geothermal boreholes with aquifers using asymptotic expansion techniques

J. Rico, M. Hermanns

World Sustainable Built Environment Conference - BEYOND 2020, Gothenburg (Sweden) Online. 02-04 November 2020

Summary:

To design an optimally-sized geothermal heat exchanger it is crucial to accurately forecast its thermal response over the whole lifetime of the building. Since the presence of aquifers highly affects the heat exchange between geothermal boreholes and the ground, both heat transfer mechanisms, conduction and convection, must be taken into account in the ground. In the present work the existence of large disparities in time and length scales in the problem is exploited using asymptotic expansion techniques to develop a theoretical model capable of taking into account both aforementioned heat transfer mechanisms for any Peclet number of the groundwater flow.

DOI: https://doi.org/10.1088/1755-1315/588/5/052033

Published in IOP Conference Series: Earth and Environmental Science, vol: 588, pp: 052033-1/052033-10, ISSN: 1755-1307

Publication date: 2020-11-20.

Citation:
J. Rico, M. Hermanns, Modeling the thermal interaction of geothermal boreholes with aquifers using asymptotic expansion techniques, World Sustainable Built Environment Conference - BEYOND 2020, Gothenburg (Sweden) Online. 02-04 November 2020. In: IOP Conference Series: Earth and Environmental Science, vol. 588, nº. 1.15 – 1.19, ISSN: 1755-1307