Date post: | 13-Apr-2017 |
Category: |
Environment |
Upload: | sneha-keshari |
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HARNESSING SOLAR ENERGY
Hello!
I am the Sun. I am very useful.
The energy from the Sun Is calledSolar Energy.
Solar Energy – Its Huge!• Solar is the only renewable energy source that is
everywhere enough to serve as a foundation of a global energy economy in nearly all the locations where energy is required.
The energy in sunlight striking the earth for 40 minutes = worldwide energy use for 1 year.
There is far more solar energy received by a small part of public lands in the desert areas.
Methods of Harnessing Solar Energy• Passive: requires building design that captures solar
energy heat and light when needed, and excludes it when excessive (usually by seasons). Many elements of passive solar design are not costly.
• Active: harnessing solar energy to store it or convert it for other applications. Some types: – Thermal: hot water for cooking, heating, or purification, industrial
heat for melting, or electricity generation through steam turbines
Photovoltaic: direct electricity generation utilizing panels or film
Concentrating solar applications use mirrors or lenses to focus sunlight – and can be thermal or photovoltaic.
What does it cost to make solar electricity?
Its free!
What are some things that solar electricity can provide power for?
• anything we currently use electricity for
• plug-in cars, making it possible to kick the petroleum habit in personal transportation, at least
Solar powered car
Indian Railways using Solar power