Research on the performance change of annular cross wavy heat exchanger plates based on bending forms

IF 5.4 3区工程技术 Q2 ENERGY & FUELS

Thermal Science and Engineering Progress Pub Date : 2025-09-15 DOI:10.1016/j.tsep.2025.104110

Ruihao Wang, Xiaohu Chen, Meng Wang, Zhongyi Wang, Yanhua Wang

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引用次数: 0

Abstract

The application of recuperators can effectually enhance the thermal efficiency. The cross wavy primary surface regenerator is widely used because of its excellent thermodynamic performance. However, the current research of scholars only focuses on the single-channel or multi-channel models. There is no relevant research on the thermodynamic performance changes caused by the bending deformation of the cross wavy heat exchange plate during actual installation. To fill the gap of this research, this paper studies the change law of thermodynamic performance of heat exchanger plate after bending. It is found that the Nu is reduced by 6.70 % and the f is reduced by 6.75 % at most after the bending of the straight heat exchange plate, which has a non-negligible performance change. The mechanism of thermodynamic performance change of the channel after bending is explained from the perspective of internal flow field analysis. Furthermore, the correlation formulas and correction coefficients of Nu and f after bending of straight heat exchanger plate are obtained by least square method, which provides a reference for the practical engineering application of cross wavy recuperator.

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基于弯曲形式的环形交叉波换热板性能变化研究

采用回热器可以有效地提高热效率。交叉波浪形初级表面蓄热器因其优异的热力性能而得到广泛应用。然而，目前学者们的研究主要集中在单渠道或多渠道模型上。对实际安装过程中十字波换热板弯曲变形引起的热力性能变化没有相关研究。为了填补这一研究的空白，本文研究了换热器板弯曲后热力学性能的变化规律。研究发现，直换热板弯曲后，Nu降低6.70%，f最多降低6.75%，具有不可忽略的性能变化。从内部流场分析的角度解释了管道弯曲后热力学性能变化的机理。利用最小二乘法得到了直板式换热器弯曲后Nu和f的相关公式和修正系数，为交叉波回热器的实际工程应用提供了参考。

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

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.