Development of a High Perfomance Gas Thermoelectric Generator (TEG) with Possibible Use of Waste Heat

Zinovi Dashevsky, Albert Jarashneli, Yaakov Unigovski, Bohdan Dzunzda, Feng Gao and Roni Z. Shneck
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Zinovi Dashevsky: Department of Materials Engineering, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
Albert Jarashneli: Department of Materials Engineering, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
Yaakov Unigovski: Department of Materials Engineering, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
Bohdan Dzunzda: Department of Computer Technics, Vasyl Stefanyk Precarpathian National University, 76-000 Ivano-Frankivsk, Ukraine
Feng Gao: State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China
Roni Z. Shneck: Department of Materials Engineering, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel

Energies, 2022, vol. 15, issue 11, 1-17

Abstract: A huge concern regarding global warming, as well as the depletion of natural fuel resources, has led to a wide search for alternative energy sources. Due to their high reliability and long operation time, thermoelectric generators are of significant interest for waste heat recovery and power generation. The main disadvantage of TEGs is the low efficiency of thermoelectric commercial modules. In this work, a unique design for a multilayer TE unicouple is suggested for an operating temperature range of 50–600 °C. Two types of thermoelectric materials were selected: «low temperature» n -and p -type TE materials (for the operating temperature range of 50–300 °C) based on Bi 2 Te 3 compounds and «middle temperature» (for the operating temperature range of 300–600 °C) n - and p -type TE materials based on the PbTe compound. The hot extrusion technology was applied to fabricate n - and p -type low-temperature TE materials. A unique design of multilayer TEG was experienced to achieve an efficiency of up to 15%. This allows for the possibility of extracting this amount of electrical power from the heat generated for domestic and water heating.

Keywords: TEG; dimensionless figure of merit; thermoelectric materials; waste heat (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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Citations: View citations in EconPapers (1)

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