Supplementary information and model inputs/outputs for "Quantifying vertical borehole heat exchanger sustainability from a geothermal resource perspective in the UK."

Dataset

Abstract

This dataset contains supplementary informations (Supplementary_Material.txt) as well as the models input and output files relevant to the investigation of the subsurface thermal footprint induced by heat extraction from a borehole heat exchanger (BHE) in the UK. Low-temperature geothermal energy is seen as a renewable resource that could contribute to the decarbonization of residential heating in the UK. Here, we constrain the potential of the sub-surface to provide the heating requirements to a single-family house via a vertical Borehole Heat Exchanger. Using a combination of analytical and numerical models, we calculate the heat balance and show that only geothermal flux can significantly contribute to the replenishment of stored heat, but only provides <5% of the yearly average heat demand. Under most designs, the heat mining resulting from the lack of natural recharge causes the continuous expansion of the thermal footprint over time at an average rate of 18 m²/yr over 30 years. Hence, artificial heat recharge is essential to guarantee the sustainability of the resource in areas of low heat flow and limit the areal impact of heat mining. This must be included as a key element in the design of a regulatory framework for resilient long term sustainable geothermal resources. Simulations were run using the OpenGeoSys finite-element numerical modelling software, whose executable 'ogs.exe' is provided in this dataset.

Data Citation

Receveur, Mylene; McDermott, Christopher I. (2022). Supplementary information and model inputs/outputs for "Quantifying vertical borehole heat exchanger sustainability from a geothermal resource perspective in the UK.", [dataset]. University of Edinburgh. School of GeoSciences. https://doi.org/10.7488/ds/3470.
Date made available31 Aug 2022
PublisherEdinburgh DataShare
Geographical coverageUK,UNITED KINGDOM

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