Research on comprehensive heat transfer performance and structure optimization of swiftlet-type fin of printed circuit heat exchangers

IF 2.3 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Annals of Nuclear Energy Pub Date : 2025-09-03 DOI:10.1016/j.anucene.2025.111860

Jinxing Wu, Peng Shao, Jiahui Yi, Shiwu Hou, Tianwei Gu, Dongyang Ding

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引用次数: 0

Abstract

In order to improve the comprehensive heat transfer performance of the PCHE, this paper took the swiftlet-type fin as the research object, the influence of different structural parameters on its flow and heat transfer of the fin was studied, and the influence rules of different structural parameters on comprehensive heat transfer performance were obtained. The swiftlet-type fin was optimized by response surface method under two working conditions of Re lower and higher than 15000, respectively, the optimal combination of structural parameters were obtained, and the PEC is improved by 22.09%. The optimal structure of Swiftlet-type fin was applied to the pseudocritical region, the variation law of surface heat transfer coefficient of SCO₂ increases first and then decreases along the flow direction near the pseudocritical point was obtained. A non-uniform arrangement method of fins was proposed by matching the cross distance at the tail of the fins with the magnitude of the local surface heat transfer coefficient of the flow channel.

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印刷电路换热器金丝燕式翅片综合传热性能及结构优化研究

为了提高PCHE的综合换热性能，本文以金丝雀型翅片为研究对象，研究了不同结构参数对其流动和翅片换热的影响，得到了不同结构参数对综合换热性能的影响规律。采用响应面法在Re低于15000和高于15000两种工况下对金丝燕式翅片进行了优化，得到了最优的结构参数组合，其PEC提高了22.09%。将最优结构的金丝燕式翅片应用于拟临界区，得到了在拟临界点附近沿流动方向SCO2表面换热系数先增大后减小的变化规律。通过将翅片尾部交叉距离与流道局部表面换热系数的大小匹配，提出了一种非均匀布置翅片的方法。

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

Annals of Nuclear Energy 工程技术-核科学技术

CiteScore

4.30

自引率

21.10%

发文量

632

审稿时长

7.3 months

期刊介绍： Annals of Nuclear Energy provides an international medium for the communication of original research, ideas and developments in all areas of the field of nuclear energy science and technology. Its scope embraces nuclear fuel reserves, fuel cycles and cost, materials, processing, system and component technology (fission only), design and optimization, direct conversion of nuclear energy sources, environmental control, reactor physics, heat transfer and fluid dynamics, structural analysis, fuel management, future developments, nuclear fuel and safety, nuclear aerosol, neutron physics, computer technology (both software and hardware), risk assessment, radioactive waste disposal and reactor thermal hydraulics. Papers submitted to Annals need to demonstrate a clear link to nuclear power generation/nuclear engineering. Papers which deal with pure nuclear physics, pure health physics, imaging, or attenuation and shielding properties of concretes and various geological materials are not within the scope of the journal. Also, papers that deal with policy or economics are not within the scope of the journal.