Hydrocarbon combustion powered micro thermoelectric generator with an inverted T-shape heat collector

IF 6.1 2区工程技术 Q2 ENERGY & FUELS

Applied Thermal Engineering Pub Date : 2024-11-09 DOI:10.1016/j.applthermaleng.2024.124808

Guoneng Li , Yuxiao Zhi , Shifeng Wang , Youqu Zheng , Rong Shen , Wenwen Guo , Yuanjun Tang

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引用次数: 0

Abstract

The battery greatly accelerates flourishing of interconnection and intercommunication, even though it has been long suffered by the low energy density and long charging time. Hydrocarbon combustion powered micro-thermoelectric generator is a promising alternative to batteries due to its solid-state energy conversion and high energy density. Detail literature reviews revealed that no previous combustion powered thermoelectric generator is able to generate an electric power greater than 50 W with an overall efficiency higher than 3.5 %. In this study, a blower-assisted swirl combustor and an inverted T-shape heat collector are first proposed to simultaneously augment the overall efficiency and electric power to 4.11 % and 76.3 W, respectively. The power density of the proposed thermoelectric generator reaches 5088 W/m² on the basis of the area of the thermoelectric module, which is achieved by releasing the power generation potential of the thermoelectric module to a degree of 89.6 %. In addition, a lumped thermoelectric model is developed and combined with turbulent fluid flow, combustion reaction, and heat transfer models to analyze the working principle of the inverted T-shape heat collector. Detail comparisons and comprehensive discussions on power density, power magnitude, and overall efficiency with previous studies are made. The present work provides a concrete method to design a high-performance hydrocarbon combustion powered micro-thermoelectric generator.

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带有倒 T 型集热器的碳氢化合物燃烧微型热电发电机

电池大大加速了互联和互通的发展，尽管它长期以来一直受到能量密度低和充电时间长的困扰。以碳氢化合物燃烧为动力的微型热电发电机因其固态能量转换和高能量密度而有望成为电池的替代品。详细的文献综述显示，以前的燃烧动力热电发电机都无法产生大于 50 W 的电能，且总效率高于 3.5%。本研究首次提出了鼓风机辅助漩涡燃烧器和倒 T 型集热器，可同时将总效率和电功率分别提高到 4.11 % 和 76.3 W。在热电模块面积的基础上，拟议热电发电机的功率密度达到 5088 W/m2，通过释放热电模块的发电潜能达到 89.6%。此外，还建立了叠加热电模型，并结合湍流流体流动、燃烧反应和传热模型分析了倒 T 型集热器的工作原理。在功率密度、功率大小和总体效率方面与之前的研究进行了详细比较和全面讨论。本研究为设计高性能碳氢化合物燃烧动力微型热电发电机提供了具体方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Thermal Engineering 工程技术-工程：机械

CiteScore

11.30

自引率

15.60%

发文量

1474

审稿时长

57 days

期刊介绍： Applied Thermal Engineering disseminates novel research related to the design, development and demonstration of components, devices, equipment, technologies and systems involving thermal processes for the production, storage, utilization and conservation of energy, with a focus on engineering application. The journal publishes high-quality and high-impact Original Research Articles, Review Articles, Short Communications and Letters to the Editor on cutting-edge innovations in research, and recent advances or issues of interest to the thermal engineering community.