Abstract
The demand for renewable energy is growing rapidly, driven by climate change and the need for sustainable solutions. This study focuses on designing and optimizing a geothermal thermoelectric generator (GTEG) system in Saudi Arabia, leveraging the country's geothermal potential. The optimization process investigated key parameters such as substrate materials, thermoelectric leg length, and dimensionless thermal and electrical conductance. The results reveal that using AlN as a substrate material, combined with a reduced leg length of 0.1 mm, significantly enhances power output, achieving 8.5 W per module. Dimensionless analysis further identified optimal dimensionless thermal conductance (Nk = 0.291) and dimensionless resistance (Rr = 1.25), deviating from conventional values, leading to improved accuracy and performance. A proposed system design integrating 25 modules in a 0.5 × 0.5 m2 setup yields a total power output of approximately 210 W. This compact design demonstrates the feasibility of meeting basic household energy needs using geothermal energy. The study underscores the potential of optimized GTEG systems as sustainable and reliable energy sources in Saudi Arabia, advancing the integration of geothermal energy into the national energy mix and supporting the country's renewable energy goals.
First Page
180
Last Page
195
Recommended Citation
Fagehi, Hassan
(2025)
"Design and Optimization of a Geothermal Thermoelectric Generator System (GTEG) In Saudi Arabia,"
Journal of King Abdulaziz University: Engineering Sciences: Vol. 35:
Iss.
2, Article 7.
DOI: https://doi.org/10.64064/1658-4260.1016
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