a small presentation on solar energy

1. SOLAR ENERGY

2. What is Solar Energy?
• Solar energy, radiant light and heat from the
sun, has been harnessed by humans since
ancient times using a range of ever evolving
technologies.
• Solar energy technologies include solar
heating, solar photo voltaic, solar thermal
electricity and solar architecture.

3. How much solar energy?

4. Solar Energy In India
• With about 300 clear, sunny days in a year, India's theoretical
solar power reception, on only its land area, is about 5000
Petawatt-hours per year (PWh/yr).
• The daily average solar energy incident over India varies
from 4 to 7 kWh/m2 with about 1500–2000 sunshine hours
per year.
• India is ranked number one in terms of solar energy
production per watt installed, with an insolation of 1,700 to
1,900 kilowatt hours per kilowatt peak (kWh/KWp).
• By May 2012 the installed grid connected photo voltaic had
increased to over 979 MW, and India expects to install an
additional 10,000 MW by 2017, and a total of 20,000 MW by
2022.

5. Solar Resource Map of India

6. Applications of solar technology
1. Architecture and urban planning:
• Sunlight has influenced building design since
the beginning of architectural history.
• Advanced solar architecture and urban planning
methods were first employed by the Greeks and
Chinese, who oriented their buildings toward
the south to provide light and warmth.

7. 2. Agriculture and horticulture:
• Agriculture and horticulture seek to
optimize the capture of solar energy in order
to optimize the productivity of plants.
• Techniques such as timed planting
cycles, tailored row orientation, staggered
heights between rows and the mixing of
plant varieties can improve crop yields.

8. 3. Solar lighting:
• Day lighting features such as this oculus at the
top of the Pantheon, in Rome, Italy have been
in use since antiquity.
• The Romans recognized a right to light as
early as the 6th century and English law
echoed these judgments with the Prescription
Act of 1832.

9. 4. Solar power:
• Solar power is the conversion of sunlight into
electricity, either directly using photo voltaic
(PV), or indirectly using concentrated solar
power (CSP).
• CSP systems use lenses or mirrors and
tracking systems to focus a large area of
sunlight into a small beam.
• PV converts light into electric current using
the photoelectric effect.

10. 5.Photovoltaics:
• A solar cell, or photovoltaic cell (PV), is a
device that converts light into electric current
using the photo electric effect.
• The first solar cell was constructed by Charles
Fritts in the 1880.

11. Working of PV cell:

12. 6.Solar vehicles:
SOLAR CAR SOLAR PLANE

13. Advantages
• Non polluting: no noise, no harmful or
unpleasant emissions or smells.
• Very reliable.
• Solar panels produce more power within 5
years than the power consumed in their
production.
• Solar Power is a renewable energy source.
Disadvantages
• Sun does not shine consistently.
• Solar energy is a diffuse source. Addressed by
approaching the problem through:
1) collection, 2) conversion, 3) Storage.