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- W3137222712 abstract "Due to the high carbon dioxide emissions added to the atmosphere from the transportation sector, it is imperative to replace current transportation powering systems with more environmentally-benign alternatives. This paper provides a comparative study of recently proposed fuel cell-based powering systems for cleaner locomotives. This comparison involves four factors, namely thermodynamic energy and exergy efficiencies, CO2 emissions, and fuel costs per a duty cycle. The results of this comparative assessment study show that using a hybrid solid-oxide fuel cell-gas turbine powering system fueled by natural gas is the better option in terms of thermodynamic efficiencies and fuel costs, but not carbon emissions since hydrogen and ammonia-fueled systems have no emissions during operation. This system has energy efficiency and exergy efficiency values of 67.8% and 61.7%, respectively. A hydrogen-based powering system is not currently feasible since it costs about 5.9 times more than what the current diesel engine powering systems cost for operation. It can only be economically feasible if the hydrogen fuel cost drops below C$3 per kg of hydrogen which will take many years to accomplish. Although the energy efficiency of a hydrogen fuel cell is thermodynamically reasonable to make the performance assessment, there is a strong need to additionally focus on economic dimensions of the systems. Therefore, transitional fuels, such as natural gas and ammonia, are needed to attract the locomotive industry to more environmentally benign powering systems." @default.
- W3137222712 created "2021-03-29" @default.
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- W3137222712 date "2021-06-01" @default.
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- W3137222712 title "Comparative evaluation of fuel cell based powering systems for cleaner locomotives" @default.
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- W3137222712 doi "https://doi.org/10.1016/j.tsep.2021.100912" @default.
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