Water Transfer Factor Measurement

Authored by: Tak Cheung Yau , Pierre Sauriol , Xiaotao Bi , Jürgen Stumper

PEM Fuel Cell Diagnostic Tools

Print publication date:  August  2011
Online publication date:  August  2011

Print ISBN: 9781439839195
eBook ISBN: 9781439839201
Adobe ISBN:


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8.1 Introduction

Definition of Water Transfer Factor

Importance of Water Transfer Factor Measurements and Potential Applications

8.2 Measurement Methods and Equipment

Collection Methods

Dew Point/Relative Humidity Methods

Composition Methods

Mass Flow Methods

8.3 Key Design Aspects

Design Considerations

Sensitivity Analysis

Monte Carlo Analysis

Further Design Considerations for Dynamic Analysis

8.4 Experimental Results and Uses

Effects of Operating Conditions

Effects of MEA Construction

Trends from the Polarization-Type Tests with the Fitting of the Model Parameters

Local Alpha Profiles

Experimental Results from Dynamic Measurements

8.5 Outlook

Water Balance and Humidification Systems

Water Transfer in Nonreactive Systems

Hydrogen Crossover on a Running Fuel Cell




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