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Masel, Richard I. Dunbar, Zachary W. 2015-09-25T20:44:01Z 2015-09-25T20:44:01Z 10000-01-01 2009 2009 A final finding is that surface defects in the flow field impact the water distribution pattern. To the author's knowledge, this is the first time the importance of flow field surface quality is considered, and its impact is found to be profound. In our system we find that defects act as 'sticking' points on the flow channel bottom, creating water waves that do not exhaust from the fuel cell. These stuck waves increase the pressure drop within the fuel cell, as well as reducing its freeze resistance, catalyst stability, and stack stability. Made available in DSpace on 2015-09-25T20:44:01Z (GMT). No. of bitstreams: 3 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3395580.pdf: 23629676 bytes, checksum: 852507ebb8e6034aa145e501d571be29 (MD5) 3395580.zip: 51233072 bytes, checksum: 3c0422d681e4c91f38ab30f171b3d0d3 (MD5) Previous issue date: 2009 Embargo set by: Seth Robbins for item 83712 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 219 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2009. http://hdl.handle.net/2142/82431 (MiAaPQ)AAI3395580 eng Energy Water Management Diagnostics of a Proton Exchange Membrane Fuel Cell Using Magnetic Resonance Imaging text Chemical Engineering Chemical Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.