green energy , why green energy , types of green energy conclusion.

1. GREEN ENERGY
Presented by:
Sanaan Umar Khan
Sanaan Zia
Ibrahim
Ziaullah
Department of Industrial Engineering
University of Engineering and Technology Peshawar

2. 1.0 Contents
 Introduction
 Why Green Energy
 Types of Green Energy
 Hydro
 Solar
 Wind
 Biofuel
 Tidal
 Wave energy
 Hydrogen
 Geo-Thermal
 Conclusion.

3. 1.2 INTRODUCTION
 Energy that comes from nature
 Any type of energy that has negligible
impact on the greenhouse gas emission.
 Energy that is renewable.

4. 1.3 WHY GREEN ENERGY
 Fossil fuel is limited
 Fossil fuel creates great amount of greenhouse gases
 Except coal the other options are expensive
 Green energy is natural and renewable
 Its free because its natural
 It does not produce harmful gases.

5. 1.4 TYPES OF GREEN ENERGY
(HYDRO)
 The biggest source of renewable energy
used around the world
 Almost 21% of world energy is produced
by this (2000)
 Build on special sites
 Water storage needs lots of area so people
and environment can be affected.

6. CONTINUE ……
(SOLAR)
 232 GW produced through solar (2015)
 There are two ways energy is produced through solar
Thermal:
sunlight is concentrated at one place to make steam.
Photovoltaic:
special panels used that turns light
into electricity. Substance used are
gallium arsenide, crystalline silicon
and amorphous silicon

7. CONTINUE……
(WIND)
 Second most popular source of green power.
 17,500 MW worldwide (2000)
 Can be installed only in specific areas (windy areas)
 Are complicated to design ( aerodynamics)
 two types of wind turbine.
Vertical axis: spins on wind
From every direction.
Horizontal axis: spins on
Only one direction.

8. CONTINUE……
(BIO-FUEL)
 Plant matter, trees, grasses,
agricultural crops or other
biological materials.
 When the rots or decomposes
they release burnable gases.
 14,000 MW of annual
worldwide generation
capacity.
 The U.S. is the largest
biomass generator in the
world with 7,000 MW.

9. CONTINUE……
(TIDAL)
 Tides caused by moon in ocean are
used to drive underwater blades .
 Tides are more predictive than solar
and wind. Happens twice a day
 Huge potential because of the ocean
is waste.
 A tidal barrage power station in
France has 240 MW of capacity; its
typical output is 0.5 terawatt-hour
per year.

10. CONTINUE…
(WAVE)
 Tidal energy uses the
gravitational pull of the Earth and
moon to generate energy.
While Wave energy uses the
kinetic force of waves to
produce energy.
 Waves have lower displacement
than tides but are more
 Different converter would be
used

11. CONTINUE…..
HYDRODEN
 Available in very huge
amount.
 When burned only water
is released as end
product.
 Hydrogen can be used
in fuel cells to power
electric cars.
 A lot of energy is used
to create initial hydrogen
gas.

12. CONTINUE…..
(GEO-THERMAL)
 Heat at the core of the
earth exploited to
produce electricity
through steam.
 7,974 MW generated
worldwide (1999).
 Needs specific areas to
made like places with
natural hot springs.
(Chitral).

13. 1.5 CONCLUSION
 As the concerns about the
availability & environmental impacts
of fossil fuels become more wide
spread, the interest on
environmentally benign renewable
energy technologies will surely take
center stage among engineers &
policymakers

14. 1.6 REFRENCES
 Wikipedia
 Cosia.ca
 Bp.com global corporate energy
 Britannica.com