Hydrogen Fuel And its place in our future. Some Chemistry 2 H 2 + O 2 2 H 2 O + 572 kJ.

Hydrogen Fuel

And its place in our future

Some Chemistry

2 H2+ O2

2 H2O + 572 kJ

Fuel Cells – Basic Operation• Chemical Energy -> Electricity + Heat• Requires constant supply of H2 and O2

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

Fuel Cells - Applications

Stationary Power Generation

Remote Applications

Fuel Cell Electric Vehicles

Fuel Cells - Production

U.S. Department of Energy◦2002: $375/kw◦2010: $51/kw◦2012 target: $30/kw

Production

Steam Reforming: 95% of US production

Electrolysis of Water

The Green Solution: Electrolysis

Compressed

Liquid

Chemical Storage

Storage and Transportation

Storage and Transportation

Flammable in a 4-75% concentration by volume

Low viscosity, creating high leakage rates

Stored at high pressure and low temperature

Safety