1. HYDROGEN Uses and Energy

2. HYDROGEN: What is it? Simplest element  1 proton  1 electron

3. HYDROGEN MOST ABUNDANT GAS IN THE UNIVERSE  Highest energy by weight  Lowest energy by volume OUR SUN: 4 Hydrogen fuse into 1 Helium

4. HYDROGEN: Energy OUR SUN  Light  Heat  Wind  Rain  Photosynthesis  Fossil fuels

5. HYDROGEN: On Earth ABUNDANT BUT, Hydrogen gas, H 2, not naturally found on Earth Found as: CCH 4, H 2 O, biomass, fossil fuels, in Earth’s crust Considered Renewable

6. 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

7. HYDROGEN: Production STEAM REFORMING:  High-temperature steam separates hydrogen from methane. C H H H H 1.Cost effective 2.But uses fossil fuels

8. HYDROGEN: Production ELECTROLYSIS:  splitting water with electricity 2H 2 O + electricity  2H 2 + O 2

9. HYDROGEN: Production

10. ELECTROLYSIS: VERY PURE Can use renewable energy WATER is renewable BUT, VERY EXPENSIVE

11. HYDROGEN: Production PHOTOELECTROLYSIS:  Uses sunlight to split water  2H 2 O + SUNLIGHT  2H 2 + O 2

12. HYDROGEN: Production BIOMASS GASIFICATION BIOMASS GASIFICATION  Biomass is super-heated into hydrogen and other gases  BIOMASS CAN BE USED TO GENERATE THE HEAT

13. HYDROGEN: Current Uses Refining Refining Treating metals Treating metals Food processing Food processing

14. HYDROGEN: Current Uses NASA: FUEL CELLS PPPPropelling space shuttle PPPPowering electrical systems by reverse electrolysis 2H 2 + O 2  2H 2 O + electricity

16. COSTS of REVERSE ELECTROLYSIS: VVery expensive to build fuel cells VVery expensive to produce hydrogen NNot many ‘Filling Stations’ TTechnology is not widespread

17. BENEFITS of REVERSE ELECTROLYSIS: ZZero emissions VVery efficient VVery portable and accessible RReduces need of dependence on foreign oil