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Accession Number
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ADA562618
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Title
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Improved Round Trip Efficiency for Regenerative Fuel Cell Systems.
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Publication Date
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May 2012
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Media Count
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23p
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Personal Author
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K. E. Ayers
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Abstract
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In developing technology for air independent undersea vehicle missions, a ground-test breadboard system was adapted and utilized to prove advanced components that enable closed-loop, zero emission, low signature energy storage. The system utilizes proton exchange membrane (PEM) fuel cell and electrolysis technology with proven commercial reliability, and a balance- of-plant primarily consisting of commercial-off-the-shelf (COTS) components. Initial durability testing measured the magnitude of reactant loss to the ambient atmosphere, before replacing components known to contribute to this loss as observed during tests in a previous program. Advanced components to mitigate these losses were designed and tested at a bench-top level before integrated testing within the breadboard system. A final round of cyclic testing was conducted with advanced reactant circulation during fuel cell power generation as well as complete hydrogen recovery during the electrolysis recharge period.
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Keywords
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Atmospheres
Breadboard models
Circulation
Closed loop systems
Commerce
Commercial equipment
Electrolysis
Energy storage
Fuel cells
Fuel systems
Fuels
Hydrogen
Integrated systems
Losses
Low energy
Off the shelf equipment
Reactants(Chemistry)
Regeneration(Engineering)
Reliability
Signatures
Underwater vehicles
Uuv(Unmanned underwater vehicles)
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Source Agency
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Non Paid ADAS
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NTIS Subject Category
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97M - Batteries & Components
97K - Fuels
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Corporate Author
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Office of Naval Research, Arlington, VA.
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Document Type
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Technical report
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Title Note
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Final rept. 11 Mar 2011-11 May 2012.
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NTIS Issue Number
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1225
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Contract Number
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N00014-10-C-0369
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