Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7714164 | International Journal of Hydrogen Energy | 2015 | 10 Pages |
Abstract
This study utilizes a numerical analysis of the PEMFC unit cell in which the electrode area is 25Â cm2. The calculation is carried out by a multiphysics program called COMSOL. Water concentration distribution, hydrogen concentration distribution, and transport phenomena were calculated simultaneously. The resulting data from COMSOL are qualitatively expressed as images in many cases. However, a statistical method was proposed to analyze image data quantitatively and more precisely. The resulting data describing the water distribution and hydrogen concentration were exported and shown to have a normal distribution. The data were clearly identified using maximum, minimum, average, variance, skewness, and kurtosis values. The voltage ranges, where two kurtoses are approximately â1 for data of both the anode hydrogen concentration (AHC) and cathode water concentration (CWC), are similar to the voltage range of the ohmic loss section of PEMFC. In conclusion, the operating reference voltage of PEMFC was selected using the statistical analysis values of the AHC and CWC.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Oh-Jung Kwon, Hee-Sun Shin, Seung-Ho Cheon, Byeong Soo Oh,