压力容器2025，Vol.42Issue(8)：34-45,12.DOI:10.3969/j.issn.1001-4837.2025.08.005
新能源汽车CIHX回热器设计及性能提升研究
Research on design and performance enhancement of CIHX internal heat exchanger for new energy vehicles
NAN Yanjun 1GAO Zengliang 2SONG Bin3
作者信息
- 1. Institute of Process Equipment and Control Engineering,Zhejiang University of Technology,Hangzhou 310023,China||Zhejiang Sanhua Automotive Components Co.,Ltd.,Hangzhou 310018,China
- 2. Institute of Process Equipment and Control Engineering,Zhejiang University of Technology,Hangzhou 310023,China
- 3. Zhejiang Sanhua Automotive Components Co.,Ltd.,Hangzhou 310018,China
- 折叠
摘要
Abstract
To enhance the performance of the thermal management system for new energy vehicles,a novel coaxial internal heat exchanger(CIHX)featuring a corrugated flow channel and integrated into a battery cooler is proposed.Based on the mechanism analysis of how the heat exchanger improves system performance,the CIHX was optimized in three aspects:Working fluid turbulence intensity,flow channel cross-sectional shape,and heat transfer area.Fluent simulations were used to compare the heat transfer performance of various schemes,followed by strength and reliability tests.The results show that the corrugated flow channel scheme significantly enhances turbulence intensity and heat transfer coefficient of the refrigerant by improving flow disturbance and simultaneously adjusting channel dimensions and heat transfer area.Consequently,the CIHX achieves an 11%to 24%increase in heat exchange capacity under the same operating conditions compared to similar products,and its structural design has been verified to meet safety and strength requirements.This optimization design effectively improves the thermal management system performance and provides a feasible pathway for developing high-efficiency compact heat exchangers.关键词
新能源汽车/回热器/同轴管/空调系统/热管理/结构可靠性Key words
new energy vehicles/internal heat exchanger/coaxial tube/air conditioning system/thermal management/structural reliability分类
机械制造引用本文复制引用
NAN Yanjun,GAO Zengliang,SONG Bin..新能源汽车CIHX回热器设计及性能提升研究[J].压力容器,2025,42(8):34-45,12.
