TY - GEN

T1 - Studies on the numerical modeling of the unit butterfly-type Molten Carbonate Fuel Cell

AU - Chung, Gui Yung

AU - Yoo, Min Jung

AU - Lim, Hee Chun

AU - Lim, Tae Hoon

AU - Nam, Suk Woo

AU - Hong, Seong Ahn

PY - 2005

Y1 - 2005

N2 - The large size stack of MCFC (Molten Carbonate Fuel Cell) becomes possible with the large electro-electrolyte plates and the stack of the unit cells. In this case, the estimations of the performances could be done with mathematical modelings. In this research, the mathematical modeling of fluid dynamic behaviors in the gas channels of MCFC and that of the butterfly-type cell has been studied. The effects of sizes of gas channels and utilization rates (Ua) have been studied. It could be shown that it is safe to assume that the gas concentration along the direction of gas channel height is constant. Current density distributions in the parallel flow cell and the butterfly-type cell were decreased along the gas flow direction. In the parallel flow cell, current density distributions ranged between 0.0932 and 0.0528 [A/cm2]. In the butterfly-type cell, it ranged a little bit lower than that in the parallel flow cell. In the parallel flow cell, conversion distributions in the anode gas channel were increased up to 0.3672. In the butterfly-type cell, they were increased up to 0.3870. In the anode gas channel, conversion distributions between the parallel flow cell and the butterfly-type cell were very similar. The conversions in the butterfly-type cell were a little bit higher. In the cathode gas channel, conversion distributions in the parallel flow cell were a little bit lower than that in the butterfly-type cell. Temperature distributions increased along the gas flow direction. But, after a specific position, it decreased. Distributions of temperature in the butterfly-type cell (from 923.7K. to 923.5K.) were a little bit lower than those of the parallel flow cell.

AB - The large size stack of MCFC (Molten Carbonate Fuel Cell) becomes possible with the large electro-electrolyte plates and the stack of the unit cells. In this case, the estimations of the performances could be done with mathematical modelings. In this research, the mathematical modeling of fluid dynamic behaviors in the gas channels of MCFC and that of the butterfly-type cell has been studied. The effects of sizes of gas channels and utilization rates (Ua) have been studied. It could be shown that it is safe to assume that the gas concentration along the direction of gas channel height is constant. Current density distributions in the parallel flow cell and the butterfly-type cell were decreased along the gas flow direction. In the parallel flow cell, current density distributions ranged between 0.0932 and 0.0528 [A/cm2]. In the butterfly-type cell, it ranged a little bit lower than that in the parallel flow cell. In the parallel flow cell, conversion distributions in the anode gas channel were increased up to 0.3672. In the butterfly-type cell, they were increased up to 0.3870. In the anode gas channel, conversion distributions between the parallel flow cell and the butterfly-type cell were very similar. The conversions in the butterfly-type cell were a little bit higher. In the cathode gas channel, conversion distributions in the parallel flow cell were a little bit lower than that in the butterfly-type cell. Temperature distributions increased along the gas flow direction. But, after a specific position, it decreased. Distributions of temperature in the butterfly-type cell (from 923.7K. to 923.5K.) were a little bit lower than those of the parallel flow cell.

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M3 - Conference contribution

AN - SCOPUS:33646546943

SN - 0791842096

SN - 9780791842096

T3 - Proceedings of the 1st European Fuel Cell Technology and Applications Conference 2005 - Book of Abstracts

BT - Proceedings of the 1st European Fuel Cell Technology and Applications Conference 2005, EFC2005 - Book of Abstracts

T2 - 1st European Fuel Cell Technology and Applications Conference 2005, EFC2005

Y2 - 14 December 2005 through 16 December 2005

ER -