A combined passive water vapor exchanger and exhaust gas diffusion barrier for fuel cell applications
| Autor: | Brian K. Hatchell, Prabhakar Singh, Rick E. Williford |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Waste management
Fouling Renewable Energy Sustainability and the Environment Chemistry Energy Engineering and Power Technology Exhaust gas Steam reforming Hydrogen fuel Vapor lock Solid oxide fuel cell Electrical and Electronic Engineering Physical and Theoretical Chemistry Secondary air injection Water vapor |
| Zdroj: | Journal of Power Sources. 112:570-576 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/s0378-7753(02)00454-8 |
| Popis: | Fuel cells operating on hydrocarbon fuels require water vapor injection into the fuel stream for fuel reforming and the prevention of carbon fouling. Compared to active water recovery systems, a passive approach would eliminate the need for a separate water source, pumps, and actuators, and thus reduce parasitic thermal losses. The passive approach developed in this paper employs a capillary pump that recovers the water vapor from the exhaust, while providing a diffusion barrier that prevents exhaust gases from entering the fuel stream. Benchtop proof tests have proven the feasibility of the passive fuel humidifier concept, and have provided a calibration factor for a computational design tool that can be used for industrial applications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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