Transient Response of a PEM Fuel Cell Representing Variable Load for a Moving Vehicle on Urban Roads

Naseri-Neshat, Hamid; Van Zee, J.W.; Shipalee, S.; Lee, Woo-kum

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Transient Response of a PEM Fuel Cell Representing Variable Load for a Moving Vehicle on Urban Roads

2001-01-01
By Naseri-Neshat, Hamid ; Van Zee, J.W. ; Shipalee, S.

File Language:

English

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Creators:

Naseri-Neshat, Hamid ; Van Zee, J.W. ; Shipalee, S. ; Lee, Woo-kum
Corporate Contributors:

National Resource Center (South Carolina State University)
Subject/TRT Terms:
Publication/ Report Number:

SCSUTC - 444095-01
Resource Type:

Research Paper
Geographical Coverage:

United States
Corporate Publisher:

South Carolina State University
Abstract:

Three-dimensional numerical simulation of transient response of a Polymer Electrolyte Membrane (PEM) fuel cell subjected to a variable load is developed. The model parameters are typical of experimental cell for a 10-cm2 reactive area with serpentine flow path. Integrated results agree with experiment from previous data. The predictions include transient responses of the cell in terms of local distributions of the current density, water activity, gases mole fraction, velocity, and pressure. The predictions further show that when a step change in time is used to model an abrupt change in the cell voltage, the numerical results show an overshoot for the average transient current density. However, an incremental change of the cell voltage (corresponding to experimental voltage variation due to system response) reduces the peak of current overshoot, and eliminates this overshoot completely if the cell voltage is changed gradually. Therefore, this overshoot is a function of rate of cell voltage change and residence time of the anode and cathode gas flow rates. The extent of local hydration of the membrane is also predicted for the transient conditions. 15 Figures, 4 tables, 25 references, 33p.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/14209/dot_14209_DS1.pdf
File Type:

[PDF - 5.61 MB]
Collection(s):

University Transportation Centers ; US Transportation Collection
Main Document Checksum:

urn:sha-512:ab4e083bfc14a32f61df2a009b17d8c6506c5948247f136d309a1ed3082151db8d0b77b5bf9743f8b9fc723aea61ffc9ef17e127a3cd7786863e9aa6780c9b0c

File Language:

English

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