solar energy ppt with simple definition

1. RADHARAMAN ENGG.
COLLEGE
 VIJAY SIR  DEEPAK KUMAR
 Enroll.- 0158ME131036
 Branch – mechanical eng.
GUIDED BY PRESENTED BY
SUBMITED TO - SUNIL SIR(HOD)

2. WHAT IS SOLAR ENERGY?
2
Energy produced by the sun
Clean, renewable source of energy
Converted into usable energy such as
electricity
Originates with the thermonuclear fusion
reactions occurring in the sun.
Represents the entire electromagnetic
radiation (visible light, infrared,
ultraviolet, x-rays, and radio waves).

3. There are currently two
main types of solar energy
technologies:
solar thermal
solar photovoltaic (PV)

4. 4
Silicon-based
solar cell
Dye-sensitized
solar cell
Photovoltaic Solar Cells
 Generate electricity directly
from sunlight
 Two Main types:
– Single-crystal silicon
(traditional)
• Widespread
• Expensive to
manufacture
– Dye-sensitized (“nano”)
• Newer, less proven
• Inexpensive to
manufacture
• Flexible

5. 5
How a Silicon-Based Solar
Cell Works
Light with energy greater
than the band gap energy of
Si is absorbed
Energy is given to an
electron in the crystal
lattice
The energy excites the
electron; it is free to move

6.  A positive “hole”
is left in the electron’s place
 This separation of electrons and holes
creates a voltage and a current
How a Dye-Sensitized Cell
Works
Light with high enough energy excites electrons
in dye molecules
Excited electrons infused into semiconducting
TiO2, transported out of cell

7. 7
Positive “holes” left in dye molecules
Separation of excited electrons and “holes”
creates a voltage

8. WORKING OF FLAT PLATE
COLLECTOR

9. EQUATION OF FLAT PLATE
COLLECTOR
I(Txα)A = Q(u) + Q(cond.) + Q(conv. + reradi.)
Where,
I = Heat flux falling (W/M2)
T = Heat of amount trans. From glass plate
α= Fraction which is absorbed by absorber plate
A = Area of Plate
Q(u) = Useful heat gain
Q(cond.) & Q(conv.+reradi.) = losses

10. Major Uses of Solar Energy
Daylight
Drying Agricultural Products
Space Heating
Water Heating
Generating Electrical Power
Concentrating Solar Power (CSP)
Photovoltaics

11. Advantages of Solar
Energy
 Clean
 Sustainable
 Free
 Provide electricity to remote places

12. Disadvantages of Solar
Energy
Less efficient and costly equipment
Part Time
Reliability Depends On Location
Environmental Impact of PV Cell
Production

13. INDIAN SCENERIO
 Most parts of India receive
good solar radiation 4- 7
kWh/sq. m/day
 Possible to meet growing
energy demands and cover
deficit areas
 Can substantially reduce
consumption of kerosene and
diesel for lighting and power
generation
 Provide access and
empowerment at grass root
level

14. CRYSTALLINE SILICON SOLAR
MODULE EFFICIENCY
TYPICAL IN PRODUCTION
INTERNATIONAL
INDIAN
• SINGLE CRYSTAL 15 – 20.4 %
14 – 17 %
• MULTI CRYSTAL 13 – 16%
13 – 16%

15. SOLAR ENERGY CENTRE
 Solar Energy Centre (SEC) near New Delhi under the
Ministry is the lead Centre for testing and training in
solar energy in the country
 SEC has NABL accredited testing facilities for PV
module qualification as per Indian and International
standards
 SEC is imparting training in solar energy at various
levels
 SEC is regularly conducting international training
programmes in solar energy
 Demonstration of several solar PV and thermal
applications including setting up of 1 MW capacity solar
thermal simulation and validation facility at SEC is
under progress

16. Conclusions
Indian policies have created investment
friendly environment in the country for
entire range of activities announced under
the Mission
India centric R&D and local manufacturing
necessary to reduce the cost to achieve grid
parity preferably by 2016-17
Partnerships necessary with global
stakeholders
India to be a major global player in PV
technology

17. THANKS