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2. CONCENTRATED SOLAR POWER
3. PARABOLIC TROUGH
4. SOLAR POWER TOWER
5. STIRLING DISH
7. PV SYSTEM
9. STORAGE METHODS
• Solar power is the conversion of
sunlight into electricity, either
directly using photovoltaics (PV), or
indirectly using concentrated solar
• Concentrated solar power systems
use lenses or mirrors and tracking
systems to focus a large area of
sunlight into a small beam.
• Photovoltaics convert light into
Concentrated Solar Power
Concentrating Solar Power systems use lenses or
mirrors and tracking systems to focus a large area of
sunlight into a small beam.
The concentrated heat is then used as a heat source for
a conventional power plant. A wide range of
concentrating technologies exists; the most developed
are the parabolic trough , the concentrating linear
Fresnel reflector, the Stirling dish and the solar power
Various techniques are used to track the Sun and focus
light. In all of these systems a working fluid is heated
by the concentrated sunlight, and is then used for
power generation or energy storage. Thermal storage
efficiently allows up to 24 hour electricity generation.
A parabolic trough consists of a linear parabolic reflector that
concentrates light onto a receiver positioned along the reflector's
focal line. The receiver is a tube positioned right above the middle
of the parabolic mirror and is filled with a working fluid.
The reflector is made to follow the Sun during the daylight hours
by tracking along a single axis. Parabolic trough systems provide
the best land-use factor of any solar technology.
Solar Power Tower
A solar power tower uses an array of
tracking reflectors (heliostats) to
concentrate light on a central receiver
atop a tower . These are more cost
effective, offer higher efficiency and
better energy storage capability among
Dish• The Stirling concentrating dish solar dish combines a parabolic
with a Stirling engine which normally drives an electric generator.
• The advantages of Stirling solar over pv cells are higher efficiency
of converting sunlight into electricity & longer lifetime. Parabolic
dish systems give the highest efficiency among CSP technologies.
The 50 kW Big Dish in Canberra, Australia is an example of this
Photovoltaics A solar cell, or photovoltaic cell (PV), is a device that
converts light into electric current using the
Solar cells produce direct current (DC) power which
fluctuates with the sunlight's
. For practical use this usually requires conversion
to certain desired voltages or alternating current
(AC), through the use of inverters.
Multiple solar cells are connected inside modules.
Modules are wired together to form arrays, then tied to an
inverter, which produces power at the desired voltage, and
for AC, the desired frequency/phase
Many residential systems are connected to the grid
wherever available, especially in developed countries with
In these grid-connected PV systems, use of energy storage
is optional. In certain applications such as satellites,
lighthouses, or in developing countries, batteries or
additional power generators are often added as back-ups.
Such stand-alone power systems permit operations at night
and at other times of limited sunlight.
What type of light is the
most effective ?I. There are seven types of lights in
the sunlight :- VIBGYOR
The solar panel works best in the red
light whereas it works the poorest in
violet light and medium in the green
Solar energy is a completely renewable resource.
Solar cells make absolutely no noise at all.
Solar energy creates absolutely no pollution.
Very little maintenance is required to keep solar cells
Solar panels and solar lighting may seem quite expensive
when you first purchase it, but in the long run you will find
yourself saving quite a great deal of money
Solar powered panels and products are typically extremely
easy to install.
As our oil reserves decline, it is important for us to turn to
alternative sources for energy.
Solarenergyis not availableat night.
Storingenergyis an important issue in
orderto get continuous supplyof
Solarenergycan be storedat high
are an effective storagemediumas the
Off gridsystemsuse recharges
batteriesto store excess electricitythat
can be sent to transmissiongrid.
Other applications of solar energy
1. Concentrated solar
3. Solar vehicles
4. Solar heater
5. Solar cooker
6. Passive solar energy
7. Satellites and
8. Small appliances like
9. Remote Sensing
10. Emergency Roadside