Heat transfer performance-oriented composite wick structural optimization for flat plate micro heat pipe under operating conditions

IF 5.4 3区工程技术 Q2 ENERGY & FUELS

Thermal Science and Engineering Progress Pub Date : 2025-09-19 DOI:10.1016/j.tsep.2025.104101

Chuan Luo , Min Zhao , Zhengang Zhao , Dacheng Zhang

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引用次数: 0

Abstract

Heat transfer performance of flat plate micro heat pipes (FMHPs) is primarily governed by the synergistic interaction between capillary force and porosity within the wick. This interaction varies significantly under gravitational influence, particularly at negative tilt angles where capillary force opposes gravity, leading to a substantial reduction in heat transfer efficiency. Consequently, achieving an optimal balance between capillary force and porosity becomes challenging. This study aims to enhance FMHP thermal performance across different tilt angles by optimizing composite wick structures and investigating the mechanism of capillary force-porosity balance. The SFO₆₀-FMHP (60-mesh OWM) exhibits the most favorable heat transfer performance with a maximum heat transfer power of 43.18 W at 0°, over 13.01% higher than other configurations. At

- 4 5^{\circ}

, its maximum heat transfer capacity is 18.16% higher than the compared SOTA work. Those findings indicate the 60-mesh OWM-based composite wick delivers optimal capillary force and porosity coordination. This study provides practical insights for the design and optimization of high-performance FMHPs.

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面向传热性能的平板微热管复合芯结构优化

平板微热管的传热性能主要由毛细力和芯内孔隙度的协同作用决定。这种相互作用在重力影响下变化显著，特别是在毛细力与重力相反的负倾斜角度下，导致传热效率大幅降低。因此，在毛细管力和孔隙度之间实现最佳平衡变得具有挑战性。本研究旨在通过优化复合材料芯结构和研究毛细力-孔隙平衡机制来提高FMHP在不同倾斜角度下的热性能。SFO60-FMHP （60-mesh OWM）的换热性能最好，0°时的最大换热功率为43.18 W，比其他构型的换热功率高出13.01%以上。在−45°时，它的最大传热能力比SOTA功高18.16%。这些研究结果表明，60目owm复合芯具有最佳的毛细力和孔隙度协调能力。本研究为高性能FMHPs的设计和优化提供了实用的见解。

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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.