TY  - JOUR
AU  - Samsun, Remzi Can
AU  - Prawitz, Matthias
AU  - Tschauder, Andreas
AU  - Weiske, Stefan
AU  - Pasel, Joachim
AU  - Peters, Ralf
TI  - A Compact, Self-Sustaining Fuel Cell Auxiliary Power Unit Operated on Diesel Fuel
JO  - Energies
VL  - 14
IS  - 18
SN  - 1996-1073
CY  - Basel
PB  - MDPI
M1  - FZJ-2021-05437
SP  - 5909 -
PY  - 2021
AB  - A complete fuel cell-based auxiliary power unit in the 7.5 kWe power class utilizing diesel fuel was developed in accordance with the power density and start-up targets defined by the U.S. Department of Energy. The system includes a highly-integrated fuel processor with multifunctional reactors to facilitate autothermal reforming, the water-gas shift reaction, and catalytic combustion. It was designed with the help of process analyses, on the basis of which two commercial, high-temperature PEFC stacks and balance of plant components were selected. The complete system was packaged, which resulted in a volume of 187.5 l. After achieving a stable and reproducible stack performance based on a modified break-in procedure, a maximum power of 3.3 kWe was demonstrated in a single stack. Despite the strong deviation from design points resulting from a malfunctioning stack, all system functions could be validated. By scaling-up the performance of the functioning stack to the level of two stacks, a power density of 35 We l−1 could be estimated, which is close to the 40 We l−1 target. Furthermore, the start-up time could be reduced to less than 22 min, which exceeds the 30 min target. These results may bring diesel-based fuel cell auxiliary power units a step closer to use in real applications, which is supported by the demonstrated indicators
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000699223400001
DO  - DOI:10.3390/en14185909
UR  - https://juser.fz-juelich.de/record/903804
ER  -