Session: 08-02 Alternative Energy Conversion Techniques

Paper Number: 107152

107152 - Modeling and Analysis of Hydrogen Supply System With Dual Ejector Concept For Vehicular Proton Exchange Membrane Fuel Cell 

The performance of proton exchange membrane fuel cells (PEMFC) is significantly influenced by the hydrogen supply system (HSS). It typically consists of the hydrogen tank, the pressure regulator, the water separator, and the ejector, which is a vital component of the anodic recirculation system (ARS). Since the vehicle's operation necessitates a wide range of power output, the recirculation system must have an appropriate design in order to function properly. A fixed-shape ejector is found to be tough to span the whole range required and, furthermore, determining an appropriate ejector geometry throughout the working conditions of the PEMFC is quite challenging. Therefore, the idea of applying dual-ejector design in the ARS is introduced. In this study, using the idea of dual ejector ARS, the one-dimensional model of whole hydrogen supply system integrated with the PEMFC is developed in MATLAB/Simulink platform. Design parameters are included in ejector model so that the design analysis can be conducted. Therefore, the performance of hydrogen supply system with dual ejector concept is deployed under the dynamic operation. Results show that the dual ejectors can well cover all operating ranges of a vehicular fuel cell. In addition, an improvement in stack performance is captured when utilizing the dual ejector-based anodic recirculation system.

Presenting Author: Dat Truong Le Tri Chungnam National University

Presenting Author Biography: 2017 - 2021: Bachelor's student in Automotive Engineering at Ho Chi Minh City University of Technology, Vietnam
03/2022 - present: Master's student at the School of Mechanical Engineering, Chungnam National University, Daejeon, South Korea
Interest in Mechanical Engineering and relevant topics:
- Fuel Cell
- Dynamic simulation and control system using Matlab/Simulink