HYDROGEN

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HYDROGEN

• Uses and Energy

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HYDROGEN What is it?

• Simplest element
• 1 proton
• 1 electron

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HYDROGEN

• MOST ABUNDANT GAS IN THE UNIVERSE
• Highest energy by weight
• Lowest energy by volume
• OUR SUN
• 4 Hydrogen fuse into 1 Helium

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HYDROGEN Energy

• OUR SUN
• Light
• Heat
• Wind
• Rain
• Photosynthesis
• Fossil fuels

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HYDROGEN On Earth

• ABUNDANT
• BUT, Hydrogen gas, H2, not naturally found on
  Earth
• Found as
• CH4, H2O, biomass, fossil fuels, in Earths crust
• Considered Renewable

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HYDROGEN Energy On Earth

• As an energy source
• Highly efficient
• A lot of energy for a small amount
• Low pollution
• FLEXIBLE
• USES
• Transportation, heating, power generation

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HYDROGEN Production

• STEAM REFORMING
• High-temperature steam separates hydrogen from
  methane.

H

1. Cost effective
2. But uses fossil fuels

H
C
H
H
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HYDROGEN Production

• ELECTROLYSIS
• splitting water with electricity
• 2H2O electricity ? 2H2 O2

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HYDROGEN Production
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HYDROGEN Production

• ELECTROLYSIS
• VERY PURE
• Can use renewable energy
• WATER is renewable
• BUT, VERY EXPENSIVE

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HYDROGEN Production

• PHOTOELECTROLYSIS
• Uses sunlight to split water
• 2H2O SUNLIGHT ? 2H2 O2

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HYDROGEN Production

• BIOMASS GASIFICATION
• Biomass is super-heated into hydrogen and other
  gases
• BIOMASS CAN BE USED TO GENERATE THE HEAT

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HYDROGEN Current Uses

• Refining
• Treating metals
• Food processing

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HYDROGEN Current Uses

• NASA FUEL CELLS
• Propelling space shuttle
• Powering electrical systems by reverse
  electrolysis
• 2H2 O2 ?2H2O electricity

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HYDROGEN Current Uses
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HYDROGEN Current Uses

• COSTS of REVERSE ELECTROLYSIS
• Very expensive to build fuel cells
• Very expensive to produce hydrogen
• Not many Filling Stations
• Technology is not widespread

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HYDROGEN Current Uses

• BENEFITS of REVERSE ELECTROLYSIS
• Zero emissions
• Very efficient
• Very portable and accessible
• Reduces need of dependence on foreign oil