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Evaluation of possibilities in geothermal energy extraction from oceanic crust using offshore wind turbine monopiles

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  • Banerjee, Arundhuti
  • Chakraborty, Tanusree
  • Matsagar, Vasant

Abstract

This paper proposes a novel concept of extracting geothermal power from the oceanic crust, using an offshore wind turbine structure, combined with an active heat exchanger system comprising of fluid pipes. The offshore monopile system uses a thermoelectric generator with the working principle of Seebeck effect that converts the temperature difference between the fluids in the inlet-outlet pipe to produce electricity. Thermal analysis of steel monopile with fluid-carrying-pipes has been carried out using finite element method through a heat flow analysis, taking into account the complex heat transfer process of convection through fluid pipes and conduction between the pipe-soil-monopile system. The effects of temperature variation in the fluid, the mass flow rate of the fluid in the outlet pipe, and the thermal conductivity of soil on the offshore monopile and the surrounding soil have been studied in detail. It is observed that a maximum power output of 242 kW (kW) could be extracted out of the system using thermoelectric generators.

Suggested Citation

  • Banerjee, Arundhuti & Chakraborty, Tanusree & Matsagar, Vasant, 2018. "Evaluation of possibilities in geothermal energy extraction from oceanic crust using offshore wind turbine monopiles," Renewable and Sustainable Energy Reviews, Elsevier, vol. 92(C), pages 685-700.
    • Handle: RePEc:eee:rensus:v:92:y:2018:i:c:p:685-700
    DOI: 10.1016/j.rser.2018.04.114
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    Cited by:

    1. Xianqing Liu & Puyang Zhang & Mingjie Zhao & Hongyan Ding & Conghuan Le, 2019. "Air-Floating Characteristics of Large-Diameter Multi-Bucket Foundation for Offshore Wind Turbines," Energies, MDPI, vol. 12(21), pages 1-22, October.
    2. Guanjie He & Junrui Chai & Yuan Qin & Zengguang Xu & Shouyi Li, 2020. "Coupled Model of Variable Fuzzy Sets and the Analytic Hierarchy Process and its Application to the Social and Environmental Impact Evaluation of Dam Breaks," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 34(9), pages 2677-2697, July.
    3. Banerjee, Arundhuti & Chakraborty, Tanusree & Matsagar, Vasant, 2019. "Dynamic analysis of an offshore monopile foundation used as heat exchanger for energy extraction," Renewable Energy, Elsevier, vol. 131(C), pages 518-548.
    4. Li Zhou & Shifeng Ding & Ming Song & Junliang Gao & Wei Shi, 2019. "A Simulation of Non-Simultaneous Ice Crushing Force for Wind Turbine Towers with Large Slopes," Energies, MDPI, vol. 12(13), pages 1-21, July.
    5. Guo, Tiankui & Tang, Songjun & Sun, Jiang & Gong, Facheng & Liu, Xiaoqiang & Qu, Zhanqing & Zhang, Wei, 2020. "A coupled thermal-hydraulic-mechanical modeling and evaluation of geothermal extraction in the enhanced geothermal system based on analytic hierarchy process and fuzzy comprehensive evaluation," Applied Energy, Elsevier, vol. 258(C).

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