Overall numerical simulation of chemical-thermal-electric conversion for an all-in-one thermoelectric generator based on micro scale combustion

Ziqiang He, Jingxiang You, Dugang Kang, Qunfeng Zou, Wenxiang Zhang and Zhien Zhang

Energy, 2024, vol. 292, issue C

Abstract: Micro combustion-based power systems have garnered significant attention owing to their high energy density and portability. This work presents a numerical simulation process for an integrated thermoelectric generator based on micro-combustion, which can track the chemical-thermal-electro energy conversion. The combustion performance, thermal characteristics and energy conversion for the micro-thermoelectric generator (MTEG) system are investigated. A range of equivalence ratios and Reynolds numbers (Re) is examined to provide a detailed analysis. With the increment of equivalence ratio (φ), both the energy output and the open-circuit voltage of the system significantly increase. At high φ, the voltage and energy output exhibit a growth tendency when the Re number increases. Conversely, at low φ, the voltage and energy output decrease at higher Re number. The maximum voltage of 0.264 V is achieved when φ = 1.0 and Re = 1500, while the system delivers an energy output of 1.87 W.

Keywords: Micro combustion; Thermoelectric generator; Combustion characteristics; Energy conversion (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:292:y:2024:i:c:s0360544224000781

DOI: 10.1016/j.energy.2024.130307

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