Design of a new test system for evaluation and optimization of operating parameters affecting proton exchange membrane fuel cell performance

Name: Pham Dinh Thao

LCSH: Membranes (Biology) -- Mechanical properties

LCSH: Fuel cells

LCSH: Membranes (Biology) -- Mechanical properties

LCSH: Membranes (Biology) -- Electric properties

Abstract: This research explores the influence of operating parameters (operating temperature (OT), relative humidity (RH), cathode operating pressure (COP), and air stoichiometry ratio (ASR)) and droplet purge processes on Proton Exchange Membrane Fuel Cell (PEMFC) performance. The goals are to determine the optimal operating conditions and enhance overall PEMFC power density. A custom-designed test system was used to investigate the individual and combined effects of two parameters (OT and RH) and four parameters (OT, RH, COP, and ASR) through experimentation. The orthogonal test design method, range analysis, and standard deviation (STDEV) were employed to evaluate the impact of these parameters, identify optimal settings for maximum power density, and assess the stability of purge strategies. The results demonstrate a proportional increase in cell performance with increasing COP and decreasing RH. Conversely, the impact of OT and ASR displayed a less direct relationship. The analysis confirms the effectiveness of the orthogonal method, revealing optimal conditions for maximum power density at OT 80°c, RH 50%, COP 22 psi, and ASR 2.4. Furthermore, the proposed purge strategy (0.75 seconds duration and 10 seconds interval) demonstrates the potential to improve PEMFC power density by up to 23.518%, with a corresponding increase in STDEV of 143.982% compared to the optimal condition achieved using the orthogonal test. These findings highlight the varying influence of operating parameters based on current density, test objectives, and cell configurations. Additionally, the research emphasizes the trade-off between maximizing cell power density and maintaining stability when optimizing purge processes

King Mongkut's Institute of Technology Ladkrabang. KMITL Lifelong Learning Center

Address: BANGKOK

Email: lifelong@kmitl.ac.th

Name: Mek Srilomsak

Role: Thesis Advisor

Name: Visarn Lilavivat

Role: Thesis Co-Advisor

Name: Shuichiro Hirai

Role: Thesis Co-Advisor

Created: 2024

Modified: 2025-07-26

Issued: 2025-07-26

วิทยานิพนธ์/Thesis

application/pdf

eng

DegreeName: Master of Engineering

Level: Master's Degree

Descipline: Automotive and Advanced Transportation Engineering

Grantor: King Mongkut's Institute of Technology Ladkrabang

©copyrights King Mongkut's Institute of Technology Ladkrabang

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