Optimization of zigzag parameters in printed circuit heat exchanger for supercritical CO_2 Brayton cycle based on multi-objective genetic algorithm

Feng Jin; Deqi Chen; Lian HuYanping HuangShanshan Bu

首页> 外文期刊>Energy conversion & management >Optimization of zigzag parameters in printed circuit heat exchanger for supercritical CO_2 Brayton cycle based on multi-objective genetic algorithm

【24h】

Optimization of zigzag parameters in printed circuit heat exchanger for supercritical CO_2 Brayton cycle based on multi-objective genetic algorithm

机译：Optimization of zigzag parameters in printed circuit heat exchanger for supercritical CO_2 Brayton cycle based on multi-objective genetic algorithm

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

The printed circuit heat exchanger (PCHE) shows promise for applications in the supercritical carbon dioxide (S-CO_2) Brayton cycle due to its great resistance to high temperature and pressure. The zigzag channel is the typical channel configuration of PCHEs containing structural parameters such as pitch, bend angle, and bend radius that can significantly influence flow and heat transfer performance. In this study, the pitch, bend angle, and bend radius are selected as the design variables, while the pressure and heat exchange capacity are considered as the optimization objectives. Based on the non-dominated sorting genetic algorithm-II (NSGA-II), optimization work is conducted to improve the performance and size of the zigzag channel over a wide range of structural parameters. To predict local flow and heat transfer performance, the surrogate model embedded in the one-dimensional analysis code is proposed using the artificial neural network (ANN) method and trained by 144 groups of three-dimensional simulation results. The results calculated by the one-dimensional analysis code show that both the bend angle and bend radius can significantly affect the performance of the printed circuit heat exchanger, while the bend radius plays a more important role on the pressure drop. However, the effect of the pitch on the zigzag channel is relatively small. The optimization results indicate that the appropriate core length of the zigzag channel varies with the design of the outlet temperature. For the 0.4 m core length suitable for the 306 K outlet temperature, the size is 20 less than for a 0.5 m core length with similar flow resistance, and the pressure drop is 66.3 less compared to that of the 0.3 m core length. In addition, the zigzag channel with hybrid structural parameters is proposed and compared to the conventional zigzag printed circuit heat exchanger. The optimization results indicate that the maximum difference between the two objectives is only 4. Thus, the zigzag channel with constant structural parameters can satisfy the demand for optimization with a simpler design.

著录项

来源
《Energy conversion & management》 |2022年第10期|116243.1-116243.16|共16页
作者
Feng Jin; Deqi Chen; Lian HuYanping HuangShanshan Bu;
展开▼
作者单位

Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, 400044, China;

College of Mechanical and Power Engineering, Chongqing University of Science and Technology, Chongqing, 400044, China;

CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, Chengdu 610041, China;

展开▼
收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类
关键词
Printed circuit heat exchanger; Supercritical carbon dioxide; Heat transfer; Brayton cycle; Multi-objective optimization;

Optimization of zigzag parameters in printed circuit heat exchanger for supercritical CO_2 Brayton cycle based on multi-objective genetic algorithm

摘要

著录项

相关主题

期刊订阅