Analysis of Flow and Heat Transfer Characteristics and Multi-Objective Optimization for Sinusoidal PCHE

Qixuan Hu, Zhonglei Fan (), Zhe Zhang and Yi Lu
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Qixuan Hu: School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, China
Zhonglei Fan: School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, China
Zhe Zhang: School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, China
Yi Lu: School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, China

Energies, 2023, vol. 16, issue 15, 1-16

Abstract: A Printed Circuit Heat Exchanger (PCHE) is a compact heat exchanger with high temperature and pressure resistance and is considered one of the best choices for the recuperators in the Supercritical Carbon dioxide (S-CO 2 ) Brayton cycle. The flow and heat transfer performance of sinusoidal channel PCHE were analyzed and a second-order regression model was established based on the response surface method to improve the performance of the continuous channel PCHE. It was found that reducing the channel diameter, increasing the channel amplitude, and reducing the channel pitch can increase the average value of the heat transfer coefficient and pressure drop per unit length. Moreover, sensitivity coefficient analysis was used to investigate the influence of various structural parameters on flow performance, heat transfer performance, and comprehensive performance. In addition, the structure of the sinusoidal channel PCHE was optimized using a multi-objective genetic algorithm, and three sets of Pareto optimal solutions were obtained. The corresponding optimal channel diameter D , channel amplitude A , and channel pitch Lp were in the range of 1.0–1.7 mm, 2.4–3.0 mm, and 15.1–17.0 mm, respectively, which can provide theoretical basis for the design of PCHE.

Keywords: printed circuit heat exchanger; supercritical carbon dioxide; sinusoidal channel; flow and heat transfer; multi-objective optimization (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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