Ammonia Fueled Fuel Cell Vehicle:The New Concept of a Hydrogen Supply System

Ishimatsu, Shinji; Saika, Takashi; Nohara, Tetsuo

doi:10.4271/2004-01-1925

Cited by 5 publications

(2 citation statements)

References 3 publications

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“…Then, the water with a low concentration of ammonia is returned to the separator. In our previous paper (12) , 300 ppm of the residual ammonia from the dissociator can be reduced to about 0 ppm using the ammonia separator in which the refinement water temperature is 40…”

Section: Concept Of Ammonia Recirculation Systemmentioning

confidence: 99%

“…For PEMFC applications where low levels of ammonia impurity are required, a recent study recommends ammonia concentration of under 13 ppm impurity in the fuel (14) , because the output current of PEMFCs will be decreased. The residual ammonia from the dissociator should be further decreased, because it is on the order of 300 ppm (12) even under the optimized conditions for dissociating ammonia.…”

Section: Concept Of Ammonia Recirculation Systemmentioning

confidence: 99%

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Study of Hydrogen Supply System with Ammonia Fuel

Saika

Nakamura

Nohara

et al. 2006

JSME international journal. Ser. B, Fluids and thermal engineer

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Carbon-free fuel is effective in preventing global warming. Hydrogen has no carbon and can be made also from nuclear energy or reproducible energies other than fossil fuels. However, hydrogen lacks portability because of its difficulty in liquefying, but ammonia can easily be liquefied at a room temperature and dissociated into high-content hydrogen and nitrogen using a suitable catalyst. An ammonia dissociation system for fuel cells is proposed in this paper. The residual ammonia by 13 ppm or more in the dissociated gas (H 2 +N 2 ) causes a decrease in the output of fuel cells. To separate residual ammonia, it should be sent to an ammonia separator and then to an ammonia distiller. In the experiment, the authors examine the concentrations of ammonia after dissociation at various temperatures, pressures and space velocities. The ammonia separator uses the fact that ammonia dissolves well in water. Then the ammonia water is distilled in the distiller. Thereby, the authors have proposed an ammonia circulation system that is a clean energy system.

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Section: Concept Of Ammonia Recirculation Systemmentioning

confidence: 99%

Section: Concept Of Ammonia Recirculation Systemmentioning

confidence: 99%