TY - GEN
T1 - A numerical study on the characteristics of cooling and water distribution of a passive type PEMFC stack
AU - Lee, Jaehyuk
AU - Kim, Bosung
AU - Kim, Yong Chan
AU - Lee, Yongtaek
N1 - Funding Information:
Acknowledgments: This work was supported in part by the National Natural Science Foundation of China under Grant 41201384, by the Open Fund of University Innovation Platform, Hunan under Grant 15K132, the Key Laboratory for National Geographic Census and Monitoring, National Administration of Surveying, Mapping and Geoinformation under Grant 2014NGCM01, the National Geographic Conditions Monitoring of Hunan (HNGQJC201503), and by grants from the State Key Laboratory of Resources and Environmental Information System.
Publisher Copyright:
Copyright © 2010 by the Japan Society of Refrigeration and Air Conditioning Engineering (JSRAE).
PY - 2010
Y1 - 2010
N2 - In a passive type PEMFC system, axial fans operate to supply both oxidant and coolant to cathode side of the stack by using ambient air. It is possible to make simple system, because a passive type PEMFC does not use additional cooling equipment or humidifier. However, the cooling performance of the air-cooling system is lower than the cooling system which uses water as coolant. To ensure the system reliability, an optimized stack cooling strategy is necessary. In this study, simulation has been done to find best cooing strategy. We adopted various channel configuration and graded air flow rate distribution at the cathode side and external heat transfer coefficient. In addition, we observed the water distribution at the MEA of each cell to understand the dry-out phenomenon. five channel air-cooling PEMFC stack was developed and investigated. The cell with thick rib width channel and even air flow rate distribution shows better cooling performance. In addition, the amount of water inside the center unit cell MEA is significantly reduced by the overheating.
AB - In a passive type PEMFC system, axial fans operate to supply both oxidant and coolant to cathode side of the stack by using ambient air. It is possible to make simple system, because a passive type PEMFC does not use additional cooling equipment or humidifier. However, the cooling performance of the air-cooling system is lower than the cooling system which uses water as coolant. To ensure the system reliability, an optimized stack cooling strategy is necessary. In this study, simulation has been done to find best cooing strategy. We adopted various channel configuration and graded air flow rate distribution at the cathode side and external heat transfer coefficient. In addition, we observed the water distribution at the MEA of each cell to understand the dry-out phenomenon. five channel air-cooling PEMFC stack was developed and investigated. The cell with thick rib width channel and even air flow rate distribution shows better cooling performance. In addition, the amount of water inside the center unit cell MEA is significantly reduced by the overheating.
KW - Air flow rate
KW - Cooling performance
KW - Passive type PEMFC
KW - Temperature distribution
KW - Water distribution
UR - http://www.scopus.com/inward/record.url?scp=84914674833&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84914674833
T3 - 5th Asian Conference on Refrigeration and Air Conditioning, ACRA 2010 - Green Breeze from Asia: Frontiers of Refrigerants, Heat Transfer and System
BT - 5th Asian Conference on Refrigeration and Air Conditioning, ACRA 2010 - Green Breeze from Asia
PB - Japan Society of Refrigeration and Air Conditioning Engineering (JSRAE)
T2 - 5th Asian Conference on Refrigeration and Air Conditioning - Green Breeze from Asia: Frontiers of Refrigerants, Heat Transfer and System, ACRA 2010
Y2 - 7 June 2010 through 9 June 2010
ER -