The role of pit lake thermal dynamics on the thermal performance of ground heat exchangers.

ABSTRACT: The addition of ground heat exchangers (GHEs) to a pit lake's basin has the potential for abundant, clean and renewable geothermal energy extraction using shallow geothermal systems. Basin-embedded GHEs avoid direct interaction with mine water, which has been shown to impact efficiency and longevity in mine open-loop geothermal systems negatively. The now accelerated closure of open-pit coal mines presents itself as an opportunity to use this technology. However, no guidelines currently exist for designing or operating GHEs embedded in the sediment of water bodies. Furthermore, the two-way coupling between the complex annual thermal fluid dynamics that lakes are naturally subjected to and heat fluxes on the sediments and the GHE system has not been explored. In this study, we develop and v

SUBMITTER: Carcamo-Medel M 

PROVIDER: S-EPMC11333475 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature