Journal
ENERGY
Volume 201, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2020.117620
Keywords
Clean transportation; Energy; Exergy; Molten alkaline fuel cell; Rankine cycle; Waste heat recovery
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Due to the pressure put on the rail transportation sector by governments to find alternative cleaner solutions for powering future locomotives, this study proposes a new ammonia molten alkaline fuel cell powering system with three Rankine cycles for waste heat recovery. This new system produces electric power, space heating or cooling, and hot water at the same time. It is then analyzed thermodynamically using energy and exergy tools. At the reference case, the three Rankine cycles have improved the overall energy efficiency by 13.57% compared to a standalone molten alkaline fuel cell. Also, parametric studies are conducted to evaluate the energy and exergy efficiencies of the system under different conditions. The system can achieve improved energy and exergy efficiencies of 47.92% and 52.61%, respectively. Since ammonia is used as a fuel, carbon-free exhaust gases leave the system which makes this system environmentally desirable. (C) 2020 Elsevier Ltd. All rights reserved.
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