Fuel cell stack operation with low cathode stoichiometry with cells or sections fed in series (CROSBI ID 555995)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Bezmalinović, Dario ; Barbir, Frano
engleski
Fuel cell stack operation with low cathode stoichiometry with cells or sections fed in series
Reducing the air flow rate at the stack inlet could lower parasitic power and improve the system efficiency. However, this gain should not be offset by the loss of stack performance due to lower cathode stoichiometry. A configuration in which the sections of a fuel cell stack are fed in series enabling operation at low stoichiometry while each section operates with significantly higher stoichiometry is analyzed. A drawback is that the second and each subsequent section would operate with reduced oxygen concentration at the inlet. The results of experimental and numerical analysis show that for the high pressure systems a stack with cathode sections fed with air in series could be considered as an alternative to the conventional parallel-fed stack design. However this advantage diminishes for the systems with reduced parasitic losses such as the systems operating at lower pressures and the high pressure systems with an expander at the cathode exhaust.
PEM fuel cell; air flow stoichiometry; operating pressure
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Podaci o prilogu
2009-2017.
2009.
objavljeno
Podaci o matičnoj publikaciji
ECS Transactions
The Electrochemical Society (ECS)
Podaci o skupu
216th Electrochemical Society Meeting
predavanje
04.10.2009-09.10.2009
Beč, Austrija