Geological factors in the sustainable management of mine water heating, cooling and thermal storage resources in the UK

Monaghan, A.A.; Adams, C.A.; Bell, R.A.; Lewis, M.A.; Boon, D.; Gonzalez Quiros, A.; Starcher, V.; Farr, G.; Wyatt, L.M.; Todd, F.; Walker-Verkuil, K.; MacAllister, D.J. ORCID: https://orcid.org/0000-0001-8893-9634; Abesser, C.; Palumbo-Roe, B.; Scheidegger, J.. 2024 Geological factors in the sustainable management of mine water heating, cooling and thermal storage resources in the UK. In: Gill, C.E., (ed.) Powering the Energy Transition through Subsurface Collaboration: Proceedings of the 1st Energy Geoscience Conference. Geological Society of London. (Energy Geoscience Conference Series, 1, 1).

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Abstract/Summary

Re-use of the UK's coal mine water heating, cooling and thermal storage resource is increasing in scale and the number of schemes. The upwards trajectory requires 3D planning, regulation and licensing to manage sustainable deployment. We review geological factors controlling thermal and flow processes in the anthropogenically-altered subsurface, critical for resource management with multiple users of the same space. Potential interactions of mine water geothermal schemes with the wider environment are also summarised, leading towards concepts of 3D mine water thermal blocks, protection zones, or management strategies integrating heating, cooling and storage demands. Factors such as the magnitude, extent and timescale of thermal processes to underpin management approaches are poorly quantified by data measured at-scale under varying pumping rates and thermal loads. We demonstrate early insights of how two infrastructures, the UK Geoenergy Observatory in Glasgow and the Coal Authority's Mine Water Heat Living Lab in Gateshead, can measure and monitor heat-flow processes in real world settings to provide an evidence base. For example, a thermal storage test at Glasgow showed rapid temperature changes in the rock and mine workings at the re-injection borehole and indicated an influence of lithologically-controlled transmissivity and thermal conductivity on temperature dissipation and recovery.

Item Type:	Publication - Book Section
Digital Object Identifier (DOI):	10.1144/egc1-2023-39
ISSN:	2976-7806
Date made live:	14 Aug 2024 13:18 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/537859

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