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An Overview of Ocean Thermal and Geothermal Energy Conversion Technologies and Systems

Mohammed Faizal

Department of Civil Engineering, Monash University, Melbourne, 3800, Australia

E-mail Address: mohammed.faizal@monash.edu

Corresponding author.

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Abdelmalek Bouazza

Department of Civil Engineering, Monash University, Melbourne, 3800, Australia

E-mail Address: malek.bouazza@monash.edu

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, and

Rao M. Singh

Department of Civil and Environmental Engineering, University of Surrey, Surrey, GU2 7XH, United Kingdom

E-mail Address: r.singh@surrey.ac.uk

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https://doi.org/10.1142/S2010132516300068Cited by:7 (Source: Crossref)

Abstract

The Earth and the oceans have a natural temperature gradient between the surface and given depths. The natural temperature gradient is used to operate renewable energy systems, such as power generation and space heating/cooling, which operate on similar thermodynamic concepts. For a given purpose, different technologies are used to extract heat from the two resources. Even though the concepts of the two systems are the same, their energy extracting performance is different. An overview of the similarities between the usages of the two thermal resources is presented in this paper. The energy balances at the surface of the Earth and the oceans, system performances, availabilities and economics are also presented.

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