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Sun is the ultimate source for all forms of energy.
Sun, which is over a hundred times larger than the
Earth in size and is located at a distance of 150
million kilometer from the Earth. It is said that a
sunray emitted from the Sun takes about 9 minutes to
reach the Earth.
Sun is a fusion reactor emitting 3,800 million,
million, million, million watts of energy each
second and the earth receives only
1/2,00,000,000,000 portion of this amount equal to
1.3 X 10^17 w/h. which is 20,000 times the energy
requirement of the world.
The temperature of the Sun at the centre is 15
million 0C and at the surface it is about 6000 0K.
About 50% of the energy received outside Earth’s
atmosphere actually reach the Earth and is about 1
cal/sq. cm. min at sea-level. |
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 SOLAR
COOKER
The Solar Steam Cooking systems developed for
community cooking application provide an eco-friendly
solution to the increasing energy demand of the
community kitchen/cooking. While basic cooking
arrangement remains unaltered with energy input energy
come from the SUN and so the need for a standby cooking
facility does not arise.
The solar steam cooking systems are based on the solar
energy concentration technology. A number of solar
concentrators are employed for forming a system for
tapping solar energy for generating steam which can be
effectively used for large scale cooking in community
kitchens. This cooking system besides parabolic
concentrators mainly comprises of central Sun tracking
system, steam header pipe, solar energy receivers,
system piping for supply of water and steam, MS and
Civil supporting structures, Valves and pressure gauges,
temperature gauges, cooking vessels etc. The system may
be supplied and installed as per the requirements of end
user e.g. solar concentrators (5 pairs) of each of 9.5
sq. mtr area would be required for 500 persons cooking
system.
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SOLAR
LANTERN
A Solar lantern is a simple
application of solar photovoltaic technology, which has
found good acceptance in rural regions where the power
supply is irregular and scarce. Even in the urban areas
people prefer a solar lantern as an alternative during
power cuts because of its simple mechanism.
How a Solar
Lantern Works?
A solar Lantern
is made of three main components - the solar PV panel,
the storage battery and the lamp. The operation is very
simple. The solar energy is converted to electrical
energy by the SPV panel and stored in a sealed
maintenance-free battery for later use during the night
hours. A single charge can operate the lamp for about
4-5 hours.
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 SOLAR
STREET LIGHTS
This system is designed for outdoor
application in un-electrified remote rural areas. This
system is an ideal application for campus and village
street lighting. The system is provided with battery
storage backup sufficient to operate the light for 10-11
hours daily. The system is provided with automatic
ON/OFF time switch for dusk to down operation and
overcharge / deep discharge prevention cut-off with LED
indicators.
The solar street light system comprise of -
74 Wp Solar PV Module
12 V, 75 Ah Tubular plate battery
with battery box
Charge Controller cum inverter (20-35
kHz)
11 Watt CFL Lamp with fixtures4 metre
mildsteel lamp post above ground level with weather
proof paint and mounting hardware.
The SPV modules are reported to have a service life of
15-20 years. Tubular Batteries provided with the solar
street lighting system require lower maintenance; have
longer life and give better performance as compared to
pasted plate batteries used earlier.
The systems electronic provide for over-charge and
over-discharge cut-off essential for preventing battery
and luminaries damages.
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SOLAR
HOME LIGHT
Home lighting System are powered by
solar energy using solar cells that convert solar energy
(sunlight) directly to electricity. The electricity is
stored in batteries and used for the purpose of lighting
whenever required. These systems are useful in
non-electrified rural areas and as reliable emergency
lighting system for important domestic, commercial and
industrial applications. The SPV systems have found
important application in the dairy industry for lighting
milk collection/ chilling centers mostly located in
rural areas.
The Solar Home Lighting system is a fixed installation
designed for domestic application. The system comprises
of Solar PV Module (Solar Cells), charge controller,
battery and lighting system (lamps & fans). The
schematic of the HLS is given below. The solar module is
installed in the open on roof/terrace - exposed to
sunlight and the charge controller and battery are kept
inside a protected place in the house. The solar module
requires periodic dusting for effective performance.
MORE INFORMATION ABOUT SOLAR
SYSTEM AND THE RELATED PRODUCTS
For more info about solar power
products you may download the complete list and go
through it for your correct choice...click here to
download the file.
Know more
about the solar power systems... |
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Solar Energy Utilization
The solar energy can be broadly classified in two
categories on the basis of its use – Solar Active (Direct Use) &
Solar Passive (Indirect Use).
Solar Active
In Solar Active category the solar energy is directly
converted in the application form and can be further divided into
two forms – Solar Thermal (Heating Application)& Solar Photovoltaic
(Electricity Generation).
Solar Thermal
Solar Thermal Technology is employed for collecting &
converting the sun energy to heat energy for application such as
water & air heating, cooking & drying, steam generation,
distillation, etc. Basically a solar thermal device consists of a
solar energy collector - “the absorber”, a heating or heat
transferring medium and a heat storage or heat tank. Solar thermal
technology employs an elaborate use of a black body, good heat
conducting materials, insulation and reflectors. Solar geyser, solar
concentrators, solar cookers, solar still are some example of
devices based on solar thermal technology.
Solar Photovoltaic (SPV)
Solar Photovoltaic Technology is employed for directly
converting solar energy to electrical energy by the using “solar
silicon cell”. The electricity generated can be utilized for
different applications directly or through battery storage system.
Solar PV has found wide application in rural areas for various
important activities besides rural home lighting. Remote villages
deprived of grid power can be easily powered using the Solar
Photovoltaic technology. The economics of rural electrification can
be attractive considering the high cost of power transmission and
erratic power supply in the rural areas.
Solar Passive for Buildings
In Solar Passive the solar energy can be put into use by
incorporating appropriate designs in buildings itself to maximize
utilization of solar energy for various purposes such as lighting,
seasonal air conditioning, water & space heating/cooling and thereby
reduce external energy inputs.
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Copyright ©2009
SOUR URJA KENDRA, AKOLA
All rights reserved
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SOLAR
COOKER