车载紧凑式换热器高效轻质的性能优化研究

Translated title of the contribution: Study on Optimization of High Efficiency and Light Weight Performance for Vehicle-Mounted Compact Heat Exchanger

Jiaqi Yang, Yuanfu Cao, Tao Jiang, Mingjia Li

Research output: Contribution to journalArticlepeer-review

Abstract

In the limited space within new vehicles, current plate-fin heat exchangers with offset-strip fins suffer from issues such as inadequate heat transfer, high flow resistance and heavy weight. To address these challenges, an optimization scheme for vehicle-mounted compact heat exchanger is proposed. The study began by conducting tests on four types of air-water plate-fin heat exchangers, each with varying parameters for the offset-strip fins. These heat exchangers were evaluated to analyze their heat transfer and flow characteristics. Based on the experimental data, a 3D numerical model of the offset-strip fin channel was developed, and this model enabled the acquisition of highly accurate heat transfer and flow correlations applicable to a broader range of structural parameters within the heat exchanger. Additionally, a weight calculation model for the heat exchanger's core was derived from its geometric structure. A multi-objective optimization process was conducted using the non-dominated sorting genetic algorithm (NSGA II) and a comprehensive evaluation plot considering both heat transfer and flow resistance performance. Through this optimization process, the key parameters related to fin structure of the vehicle-mounted offset-strip plate-fin heat exchanger were refined, resulting in the identification of a set of fin structure parameters that exhibit high comprehensive performance. By optimization, the flow resistance coefficient was reduced by 14. 3 %, the comprehensive evaluation factor was increased by 1 0 . 7 %, and the core weight of the heat exchanger was decreased by 1 8 . 2 %, contributing to a high-efficiency and lightweight design. This paper presents an optimization scheme specifically for the vehicle offset-strip plate-fin heat exchanger, which can serve as a valuable guidance for improving the overall performance and reducing manufacturing costs of similar heat exchangers used in vehicle applications.

Translated title of the contributionStudy on Optimization of High Efficiency and Light Weight Performance for Vehicle-Mounted Compact Heat Exchanger
Original languageChinese (Traditional)
Pages (from-to)128-145
Number of pages18
JournalHsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University
Volume58
Issue number1
DOIs
Publication statusPublished - Jan 2024

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