1. A Hydrogen Economy

2. Agenda A Hydrogen Vision of the Future Hydrogen Systems Producing Hydrogen Storing and Transporting Hydrogen Hydrogen Fueled Transport Problems with Hydrogen The Promise of Hydrogen Hydrogen Summary

3. A Vision of a Hydrogen Future "I believe that water will one day be employed as fuel, that hydrogen and oxygen which constitute it, used singly or together, will furnish an inexhaustible source of heat and light, of an intensity of which coal is not capable. I believe then that when the deposits of coal are exhausted, we shall heat and warm ourselves with water. Water will be the coal of the future." Jules Vernes (1870) L´île mystérieuse

4. Hydrogen Economy Schematic

5. Hydrogen Economy in Hong Kong http://www.gii.com.hk/eng/clean_energy.htm

6. New Busses in China

7. Hydrogen Fueling Station

8. Hydrogen Systems

9. Hydrogen Production Cycle Crabtree et al., “The Hydrogen Economy,” Physics Today, Dec 2004

10. Operating the Hydrogen Economy Bossel et al., The Future of the Hydrogen Economy: Bright or Bleak?, Oct 28, 2004 http://www.oilcrash.com/articles/h2_eco.htm

11. Hydrogen Economy Supply Chain

12. Hydrogen Pathways http://www.ch2bc.org/index2.htm

13. Advantages of a Hydrogen Economy Waste product of burning H 2 is water Elimination of fossil fuel pollution Elimination of greenhouse gases Elimination of economic dependence Distributed production http://www.howstuffworks.com/hydrogen-economy.htm

14. Issues with Hydrogen Not widely available on planet earth Usually chemically combined in water or fossil fuels (must be separated) Fossil fuel sources contribute to pollution and greenhouse gases Electrolysis requires prodigious amounts of energy

15. Technological Questions Where does hydrogen come from? How is it transported? How is it distributed? How is it stored? http://www.howstuffworks.com/hydrogen-economy.htm

16. Producing Hydrogen

17. Current Hydrogen Production Current hydrogen production 48% natural gas 30% oil 18% coal 4% electrolysis Global Production 50 million tonnes / yr Growing 10% / yr US Production 11 million tonnes / yr

18. How is Hydrogen Produced? Reforming fossil fuels Heat hydrocarbons with steam Produce H 2 and CO Electrolysis of water Use electricity to split water into O 2 and H 2 High Temperature Electrolysis Experimental Biological processes Very common in nature Experimental in laboratories http://www.howstuffworks.com/hydrogen-economy.htm

19. Steam Reforming From any hydrocarbon Natural gas typically used Water (steam) and hydrocarbon mixed at high temperature (700–1100 °C) Steam (H 2 O) reacts with methane (CH 4 ) CH 4 + H 2 O → CO + 3 H 2 - 191.7 kJ/mol The thermodynamic efficiency comparable to (or worse than) an internal combustion engine Difficult to motivate investment in technology

20. Electrolysis of Water (H 2 O) http://www.gm.com/company/gmability/edu_k-12/9-12/fc_energy/make_your_own_hydrogen_results.html

21. Electrolysis of Water http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/electrol.html

22. Renewable Energy for Electrolysis http://www.howstuffworks.com/hydrogen-economy4.htm

23. Biomass Electrolysis Module http://www.nrel.gov/hydrogen/photos.html

24. High Temperature Electrolysis Electrolysis at high temperatures Use less energy to split water http://en.wikipedia.org/wiki/Hydrogen_economy

25. Biological H2 Creation Nature has very simple methods to split water Scientists are working to mimic these processes in the lab; then commercially Crabtree et al., “The Hydrogen Economy,” Physics Today, Dec 2004

26. Storing & Transporting Hydrogen

27. Hydrogen Storage Storage a major difficulty with hydrogen H 2 has low energy density per volume Requires large tanks to store H 2 can be compressed to reduce volume Requires heavy, strong tanks H 2 can be liquefied to reduce volume Boils at -423 °F (cryogenic) Requires heavily insulated, expensive tanks Both compression and liquefaction require a lot of energy

28. Ammonia Storage H 2 can be stored as ammonia (NH 3 ) Exceptionally high hydrogen densities Ammonia very common chemical Large infrastructure already exists Easily reformed to produce hydrogen No harmful waste BUT Ammonia production is energy intensive Ammonia is a toxic gas

29. Metal Hydride Storage Metal hydrides can carry hydrogen Boron, lithium, sodium Good energy density, but worse than gas Volumes much larger than gasoline Three times more volume Four times heavier Hydrides can react violently with water Leading contenders Sodium Borohydride Lithium Aluminum Hydride Ammonia Borane

30. Alkali Prod. Energy vs. Instrinsic Energy Energy needed to produce alkali metal hydrides relative to the energy content of the liberated hydrogen. Bossel et al., The Future of the Hydrogen Economy: Bright or Bleak?, Oct 28, 2004 http://www.oilcrash.com/articles/h2_eco.htm

31. Transporting Hydrogen

32. Storing & Transporting Hydrogen Store and Transport as a Gas Bulky gas Compressing H 2 requires energy Compressed H 2 has far less energy than the same volume of gasoline Store and Transport as a Solid Sodium Borohydride Calcium Hydride Lithium Hydride Sodium Hydride http://www.howstuffworks.com/hydrogen-economy.htm

33. Hydrogen Fueled Transport

34. Hydrogen-Powered Autos

35. http://planetforlife.com/h2/h2vehicle.html

36. Hydrogen-Powered Trucks http://planetforlife.com/h2/h2vehicle.html

37. Hydrogen-Powered Aircraft http://aix.meng.auth.gr/lhtee/projects/cryoplane/ Hydrogen powered passenger aircraft with cryogenic tanks along spine of fuselage. Hydrogen fuel requires about 4 times the volume of standard jet fuel (kerosene). http://planetforlife.com/h2/h2vehicle.html

38. Hydrogen-Powered Rockets http://planetforlife.com/h2/h2vehicle.html

39. Implications of Hydrogen Transport Weight of fuel Weight of steel tank Weight of carbon fiber tank Volume of tank contents Volume of tank Typical 18 wheel truck (diesel) 1175 lb(small)NA22.5 feet 3 24.0 feet 3 Typical sedan (gasoline) 108 lb(small)NA2.25 feet 3 2.5 feet 3 Truck converted to ICE hydrogen 313 lb31,300 lb6,960 lb67.5 feet 3 157 feet 3 Sedan converted to hydrogen fuel cell 17.4 lb1740 lb387 lb4 feet 3 9 feet 3 http://planetforlife.com/h2/h2swiss.html

40. The Promise of Hydrogen

41. UNIDO-ICHET Projection http://www.unido-ichet.org/ICHET-transition.php UNITED NATIONS INDUSTRIAL DEVELOPMENT ORGANIZATION INTERNATIONAL CENTRE FOR HYDROGEN ENERGY TECHNOLOGIES

42. The Iceland Example Iceland committed to be the first hydrogen economy 2050 goal Will use geothermal resources to create hydrogen Power autos, buses, and fishing fleet with hydrogen http://en.wikipedia.org/wiki/Hydrogen_economy

43. The Hydrogen NanoHorn If this is developed, we will have a hydrogen economy. Aleutian Island wind turbines to generate hydrogen via electrolysis