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Nonlinear Processes in Geophysics An interactive open-access journal of the European Geosciences Union

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Nonlin. Processes Geophys., 25, 279-290, 2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
06 Apr 2018
Experimental study of forced convection heat transport in porous media
Nicola Pastore1, Claudia Cherubini2,3, Dimitra Rapti4, and Concetta I. Giasi1 1DICATECh, Department of Civil, Environmental, Building Engineering, and Chemistry, Politecnico di Bari, Bari, Italy
2Department of Physics & Earth Sciences, University of Ferrara, via Saragat 1, 44122 Ferrara, Italy
3School of Civil Engineering, University of Queensland, St Lucia, Brisbane 4072, Australia
4New Energies And environment Company (NEA), via Saragat, 1, 44122 Ferrara, Italy
Abstract. The present study is aimed at extending this thematic issue through heat transport experiments and their interpretation at laboratory scale. An experimental study to evaluate the dynamics of forced convection heat transfer in a thermally isolated column filled with porous medium has been carried out. The behavior of two porous media with different grain sizes and specific surfaces has been observed. The experimental data have been compared with an analytical solution for one-dimensional heat transport for local nonthermal equilibrium condition. The interpretation of the experimental data shows that the heterogeneity of the porous medium affects heat transport dynamics, causing a channeling effect which has consequences on thermal dispersion phenomena and heat transfer between fluid and solid phases, limiting the capacity to store or dissipate heat in the porous medium.
Citation: Pastore, N., Cherubini, C., Rapti, D., and Giasi, C. I.: Experimental study of forced convection heat transport in porous media, Nonlin. Processes Geophys., 25, 279-290,, 2018.
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Short summary
The use of groundwater as a low-enthalpy geothermal resource for heating and cooling of buildings and for agricultural and industrial processes is growing. The study has increased the understanding of heat transfer processes in the subsurface, encouraging the investigation into how further parameters affect the amount of energy that can be stored and dissipated. This is important to maximize the efficiency and minimize the environmental impact of the geothermal installations in groundwater.
The use of groundwater as a low-enthalpy geothermal resource for heating and cooling of...