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URN etd-0829117-170209 Statistics This thesis had been viewed 281 times. Download 0 times. Author Zi-Chi Huang Author's Email Address No Public. Department Mechanical Engineering Year 2016 Semester 2 Degree Master Type of Document Master's Thesis Language zh-TW.Big5 Chinese Page Count 53 Title Simulation for the effects of U-type flow channel design on the performance of a high temperature PEM fuel cell Keyword Pressure drop Oxygen concentration High temperature proton exchange membrane fuel c U-type flow channel Current density Current density U-type flow channel High temperature proton exchange membrane fuel c Oxygen concentration Pressure drop Abstract In this study, Comsol finite elements analysis software was used to establish four different types of cathode-side fuel cell flow channels(1U, 2U, 4U and serpentine) and four flow channels were analyzed to compare the effect of different flow channels on high temperature proton exchange membrane fuel cell(HTPEMFC). The simulation result showed that pressure drop of 4U flow channel is much less than 2U and 1U flow channel, and the model revealed that 4U flow channel shows better distribution of current density and oxygen concentration. Thus, we found that the performance of 4U flow channel is better than 1U and 2U channel. In comparison with 4U flow channel and serpentine flow channel, the current density of serpentine flow channel is slightly higher. We found pressure drop of serpentine flow channel is relatively high compared with other flow channels, it is because the design which forces the fluid flows through the entire channel. If the pressure drop is too high, it will cause instability of fuel cell. But generally speaking, the performance of serpentine flow channel is relatively better than other U-type flow channel. Advisor Committee Min-Hsing Chang - advisor
An-Cheng Luo - co-chair
Chun-Ying Wu - co-chair
Files Date of Defense 2017-07-17 Date of Submission 2017-08-29