Thesis

Deepwater thermoelectricity in underwater combo power grid system

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Awarding institution
  • University of Strathclyde
Date of award
  • 2024
Thesis identifier
  • T17010
Person Identifier (Local)
  • 201575417
Qualification Level
Qualification Name
Department, School or Faculty
Abstract
  • Thermoelectrics convert heat energy to electrical energy through thermoelectric devices referred to as thermoelectric generators. Thermoelectric generators are solid-state elements without moving parts. They are noiseless, do not require any greenhouse gases, and can generate smaller (less than microwatts) and larger (greater than kilowatts) power levels based on the system design. Thermoelectric generators are reliable, durable, and can last very long. One of the several examples is the Voyager-01 spacecraft thermoelectric generator, launched by the US National Aeronautics and Space Administration (NASA) on September 5, 1977. The space probe has been operational for over four decades and has travelled above 23.429 billion km or 14.558 billion miles without maintenance. More than half a century ago, thermoelectric generators were proven for subsea oil and gas applications. However, no deepwater or ultra-deepwater thermoelectric power system (DTEG) exists anywhere worldwide. This Ph.D. thesis presents an in-depth study on the extraction and conversion of heat from ultra-deepwater oil and gas reservoirs to electricity, depending on seabed conditions. Next, electrical energy becomes chemical energy for seafloor storage and utilisation. Furthermore, the converted electrical power was integrated into an underwater combo power grid system, thus paving the way for the first seabed-bound electrical power grid system for subsea equipment and beyond.
Advisor / supervisor
  • Jeong, Byongug
  • Clelland, David
  • Race, Julia
Resource Type
Note
  • Previously held under moratorium from 18th June 2024 until 18th June 2026.
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