Green hydrogen is produced from splitting water (H2O) using electricity from renewable sources like solar, wind, and hydro power. This production method does not directly release greenhouse gases like carbon dioxide to the atmosphere, unlike other hydrogen production methods. Green hydrogen has a high energy content and can be a more efficient fuel than fossil fuels. However, hydrogen is volatile and flammable, making it difficult to store and transport safely.

1. ANJUMAN INSTITUTE OF TECHNOLOGY
AND MANAGEMENT
Dept. of Mechanical Engineering
A Seminar on
GREEN HYDROGEN AS FUEL
Presented By,
Lohit Shetty

2. Introduction:
 The emission of GHG mainly from the combustion of fossil fuels,
has become a serious issue while global energy consumption is
rapidly increasing.
 To mitigate the environment impact of greenhouse gases by reducing
the use of fossil fuels, research on alternative fuel has been actively
pursued for decades.
 Hydrogen has high energy and fuel efficiency.
 It has high energy content of 118MJ/kg at 298k.

3. Classification of Hydrogen:
As we discussed, H2 are present in combination of elements or
molecules, We need a primary source of chemical compounds to
produce following hydrogen.
Green hydrogen:
It is produced from splitting of water (H2O) by electricity where the
primary source of electricity are solar power, wind power, Hydro
power, etc.
Brown hydrogen:
It is produced from burning of fossil fuels, hydrocarbon cracking
and coal gasification which releases CO2 directly to the atmosphere.

4. Blue hydrogen:
It Produced from steam methane reforming which captures the CO2
and stored in storage tank for long time.
Grey hydrogen:
It produced from steam methane reforming which releases CO2
directly to the atmosphere.
Pink hydrogen:
It produced from splitting of water by electricity where the primary
source of electricity is nuclear energy.

5. Production:
 The only way to produce hydrogen, without emitting green house
gas would be green hydrogen by water splitting method.
 The water splitting is a process of production of green hydrogen
by the electrolysis of water.
 Electrolysis is an electrochemical process which uses electric
current to breakdown the bond between hydrogen and oxygen in
water.

6.  The primary energy sources of electrolysis are renewable sources
such as solar PV or Wind or Turbine or Geothermal or
Hydropower etc.
 Therefore the production of hydrogen from renewable energy
resources, which doesn’t emit CO2 and other green house gas is
known as green hydrogen.

8. Advantages:
 It’s not toxic , it doesn’t cause to human health.
 Highly efficient, It is 3 times more powerful than most fossil
based fuel sources.
 It is renewable energy.

9. Disadvantages:
 Hydrogen is volatile.
 Highly flammable.
 It is difficult to store and transport.
 It can be dangerous.

10. Thank You !