Heat Dissipation Enhancement Structure Design of Two-Stage Electric Air Compressor for Fuel Cell Vehicles Considering Efficiency Improvement

Jiaming Zhou, Jie Liu, Qingqing Su, Chunxiao Feng, Xingmao Wang, Donghai Hu, Fengyan Yi, Chunchun Jia, Zhixian Fan and Shangfeng Jiang
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Jiaming Zhou: School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
Jie Liu: School of Automotive Engineering, Shandong Jiaotong University, Jinan 250357, China
Qingqing Su: School of Automotive Engineering, Shandong Jiaotong University, Jinan 250357, China
Chunxiao Feng: School of Automotive Engineering, Shandong Jiaotong University, Jinan 250357, China
Xingmao Wang: School of Automotive Engineering, Shandong Jiaotong University, Jinan 250357, China
Donghai Hu: School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China
Fengyan Yi: School of Automotive Engineering, Shandong Jiaotong University, Jinan 250357, China
Chunchun Jia: School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
Zhixian Fan: Zhongtong Bus Holding Co., Ltd., Liaocheng 252000, China
Shangfeng Jiang: Zhengzhou Yutong Bus Co., Ltd., Zhengzhou 450000, China

Sustainability, 2022, vol. 14, issue 12, 1-13

Abstract: As an auxiliary component with the largest energy consumption in the fuel cell power system, the electric air compressor is of great significance to improve the overall efficiency of the system by reducing its power consumption under the premise of meeting the cathode intake demand. In this paper, the flow state of the gas in the flow field of the fuel cell TSEAC (two-stage electric air compressor) is analyzed by simulation, and the accuracy of the simulation results is verified by experiments. Through the research on the gas compression work of the fuel cell TSEAC, it is found that the higher temperature rise of the gas during the compression process will increase the compression work, thereby reducing the efficiency of the fuel cell TSEAC. Therefore, based on the field synergy theory, this paper designs the heat dissipation structure of the TSEAC elbow. In the common working conditions of fuel cell TSEAC, micro-fin tube is an effective energy-saving structure that takes into account heat dissipation enhancement and flow resistance, and its ratio of micro-fin height to laminar bottom layer thickness ε/δ = 1.6 has the best energy-saving effect. Finally, the energy-saving effect of the micro-fin tube is verified by simulation. The load torque of the optimized fuel cell TSEAC is reduced from 1.540 N·m to 1.509 N·m, and the shaft power is reduced from 14.51 kW to 14.22 kW. Its efficiency increased by 1.9%.

Keywords: enhanced heat dissipation structure; field synergy theory; proton exchange membrane fuel cell; two-stage electric air compressor (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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