hydrogen fuel and its place in our future. some chemistry 2 h 2 + o 2 2 h 2 o + 572 kj
TRANSCRIPT
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Hydrogen Fuel
And its place in our future
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Some Chemistry
2 H2+ O2
2 H2O + 572 kJ
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Fuel Cells – Basic Operation• Chemical Energy -> Electricity + Heat• Requires constant supply of H2 and O2
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Fuel Cells
Each cell produces about 0.7 volts
Stack: cells in series/parallel combination
Normal Efficiency: 40-60%◦Cogeneration Efficiency: Up to 85%
Zero Emissions
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Fuel Cells - Applications
Stationary Power Generation
Remote Applications
Fuel Cell Electric Vehicles
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Fuel Cells - Production
U.S. Department of Energy◦2002: $375/kw◦2010: $51/kw◦2012 target: $30/kw
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Production
Steam Reforming: 95% of US production
Electrolysis of Water
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The Green Solution: Electrolysis
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Compressed
Liquid
Chemical Storage
Storage and Transportation
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Storage and Transportation
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Flammable in a 4-75% concentration by volume
Low viscosity, creating high leakage rates
Stored at high pressure and low temperature
Safety
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