TY - JOUR
T1 - Effect of Baffles in Flow Channel on the Performance of Vanadium Redox Flow Battery
AU - Wu, Horng Wen
AU - Zeng, Yi Kai
N1 - Funding Information:
Partial financial assistance from the Ministry of Science and Technology of the Republic of China, Taiwan, MOST 104-2221-E-006-197-MY3 for the partial financial assistance.
Funding Information:
The authors really appreciate the Ministry of Science and Technology of the Republic of China, Taiwan, for the partial financial assistance.
Publisher Copyright:
© 2023 by the authors.
PY - 2023/2
Y1 - 2023/2
N2 - For a PEMFC to work better, adding baffles to a flow channel can improve reactant transfer. As a result, the work starts by developing a 3-D numerical model for the vanadium redox flow battery (VRFB) using COMSOL Multiphysic Simulation Software. By incorporating baffles into the serpentine flow channel, it is possible to simulate changes in ion concentration and terminal voltage. The findings indicate that the battery efficiency will be impacted by adding baffles. The authors also studied the effect of baffle height and baffle count. The baffle height of 0.9 times the channel height and baffle number of 9 has a better performance on the battery. There are four cases for installing nine baffles and four arranging types in the entire serpentine flow using such baffle height and number. In Case 4, baffles are placed uniformly at the location of channel numbers 1, 9, and 17 in the serpentine flow path. It has a better voltage and ion concentration reaction than the other cases. The unit tests for cell performances were experimentally analyzed for a smooth-serpentine channel and a baffled-serpentine one. According to the experimental findings, a higher volume rate (300 mL/min) and lower current per area (40 mA/cm2) acquire the best energy efficiency. Case 4 has a higher energy efficiency than the smooth channel.
AB - For a PEMFC to work better, adding baffles to a flow channel can improve reactant transfer. As a result, the work starts by developing a 3-D numerical model for the vanadium redox flow battery (VRFB) using COMSOL Multiphysic Simulation Software. By incorporating baffles into the serpentine flow channel, it is possible to simulate changes in ion concentration and terminal voltage. The findings indicate that the battery efficiency will be impacted by adding baffles. The authors also studied the effect of baffle height and baffle count. The baffle height of 0.9 times the channel height and baffle number of 9 has a better performance on the battery. There are four cases for installing nine baffles and four arranging types in the entire serpentine flow using such baffle height and number. In Case 4, baffles are placed uniformly at the location of channel numbers 1, 9, and 17 in the serpentine flow path. It has a better voltage and ion concentration reaction than the other cases. The unit tests for cell performances were experimentally analyzed for a smooth-serpentine channel and a baffled-serpentine one. According to the experimental findings, a higher volume rate (300 mL/min) and lower current per area (40 mA/cm2) acquire the best energy efficiency. Case 4 has a higher energy efficiency than the smooth channel.
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U2 - 10.3390/pr11020523
DO - 10.3390/pr11020523
M3 - Article
AN - SCOPUS:85149237581
SN - 2227-9717
VL - 11
JO - Processes
JF - Processes
IS - 2
M1 - 523
ER -
