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Thermal and Economic Analysis of Heat Exchangers as Part of a Geothermal District Heating Scheme in the Cheshire Basin, UK

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  • Christopher S. Brown

    (James Watt School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK
    Department of Civil Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK)

  • Nigel J. Cassidy

    (Department of Civil Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK)

  • Stuart S. Egan

    (School of Geography, Geology and the Environment, William Smith Building, Keele University, Keele, Staffordshire ST5 5BG, UK)

  • Dan Griffiths

    (Cheshire East Council, Westfields, Middlewich Road, Sandbach CW11 1HZ, UK)

Abstract

Heat exchangers are vital to any geothermal system looking to use direct heat supplied via a district heat network. Attention on geothermal schemes in the UK has been growing, with minimal attention on the performance of heat exchangers. In this study, different types of heat exchangers are analysed for the Cheshire Basin as a case study, specifically the Crewe area, to establish their effectiveness and optimal heat transfer area. The results indicate that counter-current flow heat exchangers have a higher effectiveness than co-current heat exchangers. Optimisation of the heat exchange area can produce total savings of £43.06 million and £71.5 million, over a 25-year lifetime, in comparison with a fossil-fuelled district heat network using geothermal fluid input temperatures of 67 °C and 86 °C, respectively.

Suggested Citation

  • Christopher S. Brown & Nigel J. Cassidy & Stuart S. Egan & Dan Griffiths, 2022. "Thermal and Economic Analysis of Heat Exchangers as Part of a Geothermal District Heating Scheme in the Cheshire Basin, UK," Energies, MDPI, vol. 15(6), pages 1-17, March.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:6:p:1983-:d:766934
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    References listed on IDEAS

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    1. Sean M. Watson & Gioia Falcone & Rob Westaway, 2020. "Repurposing Hydrocarbon Wells for Geothermal Use in the UK: The Onshore Fields with the Greatest Potential," Energies, MDPI, vol. 13(14), pages 1-29, July.
    2. Ağra, Özden & Erdem, Hasan Hüseyin & Demir, Hakan & Atayılmaz, Ş. Özgür & Teke, İsmail, 2015. "Heat capacity ratio and the best type of heat exchanger for geothermal water providing maximum heat transfer," Energy, Elsevier, vol. 90(P2), pages 1563-1568.
    3. Łukasz Amanowicz & Janusz Wojtkowiak, 2021. "Comparison of Single- and Multipipe Earth-to-Air Heat Exchangers in Terms of Energy Gains and Electricity Consumption: A Case Study for the Temperate Climate of Central Europe," Energies, MDPI, vol. 14(24), pages 1-28, December.
    4. Dagdas, Ahmet, 2007. "Heat exchanger optimization for geothermal district heating systems: A fuel saving approach," Renewable Energy, Elsevier, vol. 32(6), pages 1020-1032.
    5. Tomasz Sliwa & Patryk Leśniak & Aneta Sapińska-Śliwa & Marc A. Rosen, 2022. "Effective Thermal Conductivity and Borehole Thermal Resistance in Selected Borehole Heat Exchangers for the Same Geology," Energies, MDPI, vol. 15(3), pages 1-29, February.
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    Cited by:

    1. Isa Kolo & Christopher S. Brown & Gioia Falcone & David Banks, 2023. "Repurposing a Geothermal Exploration Well as a Deep Borehole Heat Exchanger: Understanding Long-Term Effects of Lithological Layering, Flow Direction, and Circulation Flow Rate," Sustainability, MDPI, vol. 15(5), pages 1-24, February.
    2. Yi Wang & Tiejun Lu & Xianglei Liu & Adriano Sciacovelli & Yongliang Li, 2022. "Heat Transfer of Near Pseudocritical Nitrogen in Helically Coiled Tube for Cryogenic Energy Storage," Energies, MDPI, vol. 15(8), pages 1-20, April.

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