Hydrogen revolution

1. Hydrogen revolution
• Hello Hydrogen
• Good Bye Oil and Smog
• There is a quiet revolution taking place in the car industry
• When oil will gone
• What is the solution ?
• What will we use to fuel vehicles,industry,buildings.
• replacing the petrol car

2. Solution
• Scientist say the fuel of future is hydrogen gas (H2) .
• A renewable Hydrogen
• It Changes the way we live
• Imagine city without smog
• Without oil tankers
• With less noise
• Already water present in the atmosphere

4. What is Hydrogen
• Most abundant element in the universe
• Found in many forms on earth
• A gas under standard conditions
• Odourless,colorless
• Non toxic or carcinogenic
• Highly flamable but has invisible flame
• An energy carrier but not a fuel

5. Hydrogen Fuel cell
• A fuel cell combines hydrogen and oxygen to produce electricity, heat,
and water.
• Fuel cells are often compared to batteries.
• Both convert the energy produced by a chemical reaction into usable
electric power.
• However, the fuel cell will produce electricity as long as fuel
(hydrogen) is supplied, never losing its charge.

8. Production of hydrogen gas
• Reforming
• Electrolysis of water
• Photoelectrolysis
• Coal gasification
• Thermolysis
• Biological production
• Biomass gasification

9. Reforming
• In which chemical process are used to seperate hydrogen from carbon
atoms in organic compunds
• From methane (CH4) and the Methanol (CH3OH)

10. Electrolysis of water

11. Photoelectrolysis
• In which electricity produced by solar cells is used to split water
molecules into gaseous hydrogen and oxygen.

12. Coal gasification
• Coal gasification is the process of producing syngas–a mixture
consisting primarily of methane (CH4) carbon monoxide (CO),
hydrogen (H2), carbon dioxide (CO2) and water vapor (H2O)–from coal
and water, air and/or oxygen.

13. Biomass gasification
• Biomass Gasification is the conversion of solid fuels (biomass) such as
wood, wood-waste and agricultural residues) into a combustible gas
mixture referred to a Producer Gas (CO+H2+CH4) or Syngas. The
gasification process uses heat, pressure and partial combustiion.

14. thermolysis
• In which high temperatures upto 3000c are used to split water
molecules into H2 and O2.

15. Reason for change
• Environment
• Energy shortages
• Energy security

16. Environment
• Reduction in green house gases
• Desire to use reneable energy
• Desire to meet emissions goals
• No co2 emissions
• Good susttituite for oil
• Low Environmental impacts
• No air pollution

17. Energy shortages
• Peak oil running out
• Hydrogen supplies a long way from
• Emergence rapidlly developing economics greatly increasing Wolrd
energy requirements
• A long term energy solution

18. Energy security
• Minimizes reliance on imported energy
• Hydrogen can be produced from multiple sources

19. So why hydrogen
• It will never run out like oil and gas
• It can be produced in several ways through many sources
• It provides energy security so any country can produce by own
• It can be used in fule cells or internal combustion engines
• So world want Environmentaly friendly fuel hydrogen has the
potential
• At some point hydrogen will be cheaper than hydrocarbons
• Very clean at use.

20. What are the problems
• It is difficult to store and transport
• New technologies needed to improve storage techniques
• It should promote it will not succeed in the current markets alone.

21. Hydrogen fuel cells pros
Eliminates greenhouse gases if the hydrogen used comes from electrolysis
of water
• Eliminates pollution caused by burning fossil fuels, the only by product is
water
• Have a higher efficiency than diesel or gas engines
• Eliminates economic dependence on politically unstable countries for fossil
fuel
• Some have low heat transmission-ideal for military applications
• Most operate silently compared to internal combustion engines
• Maintenance is simple since there are few moving parts in the system
• Operating times are much longer than with batteries

22. Hydrogen fuel cells Cons
Reforming is technically challenging and not environmentally friendly
• Production, transportation, distribution and storage of hydrogen is difficult
• Driving range of cars is shorter than in a traditional vehicles
• Refueling and starting times of fuel cell vehicles are longer
• Currently expensive to produce, since most units are hand-made
• Fuel cells are generally slightly bigger than comparable batteries or engines
• The technology is not yet fully developed and few products are availabe
• Some use expensive materials