Walch, A;
Li, X;
Chambers, J;
Mohajeri, N;
Yilmaz, S;
Patel, M;
Scartezzini, J-L;
(2022)
Shallow geothermal energy potential for heating and cooling of buildings with regeneration under climate change scenarios.
Energy
, 244
(Part B)
, Article 123086. 10.1016/j.energy.2021.123086.
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Abstract
Shallow ground-source heat pumps (GSHPs) are a promising technology for contributing to the decarbonisation of the energy sector. In heating-dominated climates, the combined use of GSHPs for both heating and cooling increases their technical potential, defined as the maximum energy that can be exchanged with the ground, as the re-injection of excess heat from space cooling leads to a seasonal regeneration of the ground. This paper proposes a new approach to quantify the technical potential of GSHPs, accounting for effects of seasonal regeneration, and to estimate the useful energy to supply building energy demands at regional scale. The useful energy is obtained for direct heat exchange and for district heating and cooling (DHC) under several scenarios for climate change and market penetration levels of cooling systems. The case study in western Switzerland suggests that seasonal regeneration allows for annual maximum heat extraction densities above 300 kWh/m2 at heat injection densities above 330 kWh/m2. Results also show that GSHPs may cover up to 55% of heating demand while covering 57% of service-sector cooling demand for individual GSHPs in 2050, which increases to around 85% with DHC. The regional-scale results may serve to inform decision making on strategic areas for installing GSHPs.
| Type: | Article |
|---|---|
| Title: | Shallow geothermal energy potential for heating and cooling of buildings with regeneration under climate change scenarios |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.energy.2021.123086 |
| Publisher version: | https://doi.org/10.1016/j.energy.2021.123086 |
| Language: | English |
| Additional information: | © 2022 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) |
| Keywords: | Shallow geothermal energy, Potential estimation, Seasonal regeneration, District heating and cooling, Climate change scenarios |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment > Bartlett School Env, Energy and Resources |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10141038 |
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