Integrated design and optimization of a heat pipe-based thermoelectric generator for range-extended electric vehicles

IF 5.4 3区工程技术 Q2 ENERGY & FUELS

Thermal Science and Engineering Progress Pub Date : 2025-09-27 DOI:10.1016/j.tsep.2025.104159

Ruochen Wang , Jinfu Zhao , Jie Chen , Renkai Ding , Ding Luo

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Abstract

Thermoelectric generation offers a promising solution for converting exhaust waste heat into electrical energy, thereby extending the driving range of range-extended electric vehicles. To enhance power output within limited space, this study proposes a novel thermoelectric generator structure integrated with heat pipes. The finned heat pipes are arranged perpendicular to the exhaust flow to improve heat collection efficiency. A numerical optimization is conducted to determine the optimal heat pipe length and quantity based on the maximum net output power. Results indicate that increasing the heat pipe length enhances heat transfer but also leads to greater pressure loss, while increasing the number of heat pipes improves output power up to a saturation point. The maximum net power output of 154.19 W is achieved when the heat pipe length is 30 mm and the number of heat pipes is six. This work provides an effective design strategy for improving thermal energy recovery in range-extended electric vehicles.

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增程电动汽车热管式热电发电机的集成设计与优化

热电发电为将废气废热转化为电能提供了一个很有前途的解决方案，从而延长了增程式电动汽车的行驶里程。为了在有限的空间内提高功率输出，本研究提出了一种新型热电发电机结构与热管集成。翅片热管垂直于排气流布置，提高集热效率。根据最大净输出功率对热管长度和数量进行了数值优化。结果表明，增加热管长度可以增强传热，但也会导致更大的压力损失，而增加热管数量可以使输出功率达到饱和点。当热管长度为30mm，热管数为6根时，最大净输出功率为154.19 W。该研究为提高增程式电动汽车的热能回收提供了有效的设计策略。

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来源期刊

Thermal Science and Engineering Progress Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

7.20

自引率

10.40%

发文量

327

审稿时长

41 days

期刊介绍： Thermal Science and Engineering Progress (TSEP) publishes original, high-quality research articles that span activities ranging from fundamental scientific research and discussion of the more controversial thermodynamic theories, to developments in thermal engineering that are in many instances examples of the way scientists and engineers are addressing the challenges facing a growing population – smart cities and global warming – maximising thermodynamic efficiencies and minimising all heat losses. It is intended that these will be of current relevance and interest to industry, academia and other practitioners. It is evident that many specialised journals in thermal and, to some extent, in fluid disciplines tend to focus on topics that can be classified as fundamental in nature, or are ‘applied’ and near-market. Thermal Science and Engineering Progress will bridge the gap between these two areas, allowing authors to make an easy choice, should they or a journal editor feel that their papers are ‘out of scope’ when considering other journals. The range of topics covered by Thermal Science and Engineering Progress addresses the rapid rate of development being made in thermal transfer processes as they affect traditional fields, and important growth in the topical research areas of aerospace, thermal biological and medical systems, electronics and nano-technologies, renewable energy systems, food production (including agriculture), and the need to minimise man-made thermal impacts on climate change. Review articles on appropriate topics for TSEP are encouraged, although until TSEP is fully established, these will be limited in number. Before submitting such articles, please contact one of the Editors, or a member of the Editorial Advisory Board with an outline of your proposal and your expertise in the area of your review.