Renewable energy can be generated continuously practically without decay of sources. Example: Solar energy, Wind energy, Hydro energy. Non renewable energy is that comes from the ground and is not replaced in a relative short amount of time. Example: Combustion of fossil fuel, coal, etc.

1. S.AGARAMUDHALVAN
MECHANICALENGINEERING
DepartmentofMechanicalEngineering
CKCollegeofEngineeringandTechnology

2. CONTENT:
 Types of energy sources
 What is solar energy
 Photovoltaic effect
 Structure of solar cell
 Solar energy in concentrated ways
 Designing solar panel
 Solar cell & Modules
 Tesla solar car
 Space based solar power
 Our future plan
 Conclusion

3. RENEWABLE ENERGY:
Renewable energy can be generated
continuously practically without decay of
sources.
Example: Solar energy, Wind energy,
Hydro energy.
NON-RENEWABLE ENERGY:
Non renewable energy is that comes
from the ground and is not replaced in a
relative short amount of time.
Example: Combustion of fossil fuel,
coal, etc.

4. WHAT IS SOLAR ENERGY
 Solar energy can energy produced by the sun
 It is clean, renewable sources of energy.
 Harnessed by solar collection methods such as solar cell.
 It is converted into usable energy such as electricity.

6.  When a light of certain frequency fall on the surface of a metal.
 Electrons will absorb the energy.
 If incident light is greater than the work function (minimum energy
required to remove the loosely bound valance of electrons )of the
metal.
 Then the photo electrons will be emitted .
 The excess energy is converted to kinetic energy of electron.
 When solar panels are placed in the sunlight photons will strike the
surface and emits electron .
 As a result electron hole pair is created in the solar cells.
 When external circuit is connected to the solar cell, electrons flow in
the circuit and current is generated.

7. SAVE TIME:
After the initial investment has been recovered , the energy from the sun is
practically free.
Financial incentives are available from the government that will reduce your
cost
ENVIRONMENT FRIENDLY :
As we see previously, it does not pollute air.
solar energy is clean, renewable sustainable and helping to protect our
environment.
It’s not affected by the supply and demand of fuel and is therefore not
subjected to ever –increase price of gasoline.
It’s does not creating a global warming (or) acid rain, smog.
It actively contribution to the decrease of harmful green house gas emission

8.  Old solar cell plants take up of large land area.
 It can damage fragile desert ecosystem.
 Need backup system at night and during cloudy /rainy days.
 Solar plants costly to build.
 The current produced is DC and converted into AC increases
the cost.

10.  Heaters
 Cars
 Lights
 Satellites
 Dryers
 Calculators
 Green houses
 Water pumps
 Chilling
 Solar ponds
 Thermal
Commercial use
 Office building, roof areas can be covered with solar
panels.
 Remote buildings such as schools, communication
can make use of solar energy.
 In developing countries, this solar panels are very
much useful.
 Even on the highways, for every five kilometres ,
solar telephone are used.

11.  There are now future several devices
and structures created which focus
and concentrate solar power.
 Solar parabolic troughs.
 Stirling dish.
 Solar power tower.
 The linear Fresnel reflector.

12. FUTURE IS SOLAR
SOLAR SATELLITE
SOLAR BUSES
SOLAR PARABOLIC DISH
SOLAR TOWER
FLOTING PANALS

13.  In house hold roofs.
 Solar panel strip on a buildings to
produce current in own purposes.
 In top of the automobiles fix the
solar panel to produce current.
 Solar energy is the only energy
source for satellites.
 Applications of solar in modern
agriculture.
 It is used for home appliances.

14. FAMOUS SOLAR CAR
 Elan musk has discovered a new fastest
solar car.
 He is one of the famous person in the top 20
influential persons in the world.
 Electric cars. Space rockets. Residential solar
power
 The car name is TESLA, it can travel around
620 miles with an hour of charging.
 Its maximum speed is 250mph.
"Most importantly, we are taking a huge step
towards a better future by accelerating the
transition to sustainable transportation."

16. VARIETY OF SOLAR CELL
Monocrystalline cells
Polycrystalline cells
Coloured cells
Transparent cells
Flexible cells

17. VARIETY OF MODULES
 High quality standards
 High performance
 High reliability
 Low tolerance
 Certificated parameters
 Long warranty
EFFICIENCY UPTO 17%

18.  The solar power tower is also
'heliostat' power plants or power
towers.
 This type of solar furnace using a
tower to receive the focused sunlight.
 It is movable mirrors (called
heliostats)
 Flat glass is used instead of the more
expensive curved glass[3]
 Generally, installations use from 150
hectares (1,500,000 m2) to 320
hectares (3,200,000 m2).

19. Quaid-e-Azam solar park
The Quaid-e-Azam solar park in planned to be a 1000 megawatt
photovoltaic power station in Bahawalpur, Punjab.

20. Caltech scientists:
Sergio Pellegrino
Harry Atwater
Ali Hajimiri

21.  Concave mirror used in solar furnace . The
solar panel is placed at the focus of the large
concave reflector.
 The concave reflector focus the sun’s rays
heated on the furnace and the high
temperature is achieved.
 The temperature can go as high as 3500°C
 Concave mirror cost Rs.80 per square feet.

22.  We have proved that after our stores of oil and coal
are exhausted the human race can receive unlimited
power from the rays of the sun.
 "The strength of solar is its incredible variety and
flexibility of applications, from small scale to large
scale“
 Solar energy will show the new face of our world
through green energy.
 Drastic changes are still occurring in the solar
energy harvesting process.
 We planning our view to make some modifications
in solar energy harvesting.

23. THANK YOU
For listening our paper presentation