Experiments on a powerful, ultra-clean, and low-noise-level swirl-combustion-powered micro thermoelectric generator

Guoneng Li, Zhihao Zhu, Youqu Zheng, Wenwen Guo, Yuanjun Tang and Chao Ye

Energy, 2023, vol. 263, issue PB

Abstract: Portable power source attracts great interest recently due to the fast development of electronics. Micro thermoelectric generator (TEG) powered by hydrocarbon fuels is such a potential solution among several possible roadmaps. Efficiency and environmentally friendliness are two major concerns with respect to the abovementioned micro TEG, inevitably involving a complete, clean, and silent combustion technique and excellent heat collection performance. A high capacity, non-premix, and miniature swirl combustor with a special reserved gas channel, incorporated with Swiss-Roll and serpentine heat collectors, is newly designed to initially provide a solution for the abovementioned concerns. The novelty of the present study is to provide a concert method to obtain a swirl-combustion-powered micro TEG with sufficient high systematic efficiency, ultra-clean emissions, and low noise-level. The maximum systematic efficiency is 3.47% at the input power of 673 W, which is 15.6% larger than that (3.01% at 600 W) in an only previous swirl-combustion-powered micro TEG. Combustion efficiency, heat collection efficiency, noise level, CO concentration, and NO pollution reach 98.2%, 92.1%, 61 dB, 32 ppm, and 4 ppm, respectively. Comprehensive discussions on the underlying mechanism to improve the micro TEG performance are performed, and detail comparisons on various aspects with previous studies are made.

Keywords: Swirl combustion; Thermoelectric generator; Systematic efficiency; Pollutant emission; Noise level (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:263:y:2023:i:pb:s0360544222027116

DOI: 10.1016/j.energy.2022.125825

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