14th International Conference on Thermal Engineering: Theory and Applications, Yalova, Türkiye, 25 - 27 Mayıs 2023, sa.2023, ss.1-4
The maritime
sector has been exploring hybrid fuel cell/battery systems as an alternative
solution to reduce exhaust gas emissions in compliance with regulations from
the International Maritime Organization (IMO). This study presents a system
model that incorporates fuel cells and batteries and simulates the entire
hybrid system for low-power boats. The results show the reduction in range due
to battery degradation at the end of the system's lifetime, with reduction
ratios ranging from 0.21% to 10% depending on the scenario. The electricity
production costs with green hydrogen utilization are higher than using shore
electricity, but blue and grey hydrogen utilization show potential for reducing
fuel costs. The FC utilization increases the range of the boat, leading to
reduced electricity production costs in configurations where hydrogen is the
supplementary energy source. Grey hydrogen utilization shows promising economic
results compared to shore electricity, with a break-even cost of 2.167 $/kg.
However, further comprehensive economic analyses considering levelized energy
costs and payback periods of fuel cells are necessary. Overall, this study highlights
the potential benefits and challenges of integrating fuel cells and batteries
in hybrid systems for maritime applications.