Proper generalized decomposition for geothermal applications

Massarotti, Nicola; Mauro, Alessandro; Trombetta, V.

doi:10.1016/j.tsep.2021.100882

Cited by 3 publications

(1 citation statement)

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“…Regarding the sustainable use of geothermal energy, particular importance is given the coupling between the reservoir and the heat exchange system to transfer energy from and to the ground. Considered the significant risks associated with the geothermal energy source, an accurate modelling of the phenomena is essential [5], [6]. The geothermal energy system studied in this work is obtained from a part of a plant used for soil freezing during the construction of Naples underground [7].…”

Section: Introductionmentioning

confidence: 99%

Coupled Geothermal Energy Simulations

Meglio

Massarotti

Mauro

et al. 2022

J. Phys.: Conf. Ser.

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This paper presents the numerical solution of thermal field of a set of geothermal coaxial probes coupled with the surrounding soil. These probes, used for the excavation of Naples underground’s tunnels with the artificial ground freezing technique, are converted for the heat transfer fluid transport for a geothermal plant. One-dimensional energy equation has been used with a single unknown in order to extract the solution of the temperature inside the probe, the temperature of the fluid, which is a boundary condition for calculating the temperature range of the soil surrounding the probes. In turn, the latter is used as a source term for the solution of the energy equation for the fluid. This paper also presents a comparison between two different probe materials i) internal and external stainless-steel crown; ii) internal rigid PVC crown and external stainless-steel crown. Such a numerical scheme allows to take into account the 3D effects of the fluid dynamics in porous media as is the soil, and, at the same time, considering a “reduced order model” inside the geothermal probes, as is the 1D model, for considering the thermal coupling effects.

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Section: Introductionmentioning

confidence: 99%