Solar Powered
Lights
How Solar energy can light
your garden
Since historical times, people have relied heavily on the
utilization of the traditional fuel sources (mainly fossil
fuels such as oil, gas, fuel-wood and coal) for energy
production. Later, with the world’s energy demands escalating
steeply and with the fossil-fuel supplies being depleted
rapidly, more and more scientific research was carried out and
newer sources of energy began to be invented.
The world shifted its focus from the fossil-fuels (which
have a limited stock available to meet our energy-needs) to the
renewable sources of energy such as wind power, hydro power,
solar power and even on nuclear power.
"Solar
energy is one of the most environment-friendly and
cost-effective sources of energy"
Solar energy is one of the most
environment-friendly and cost-effective sources of energy,
which harnesses the heat, light and the power emitted from
the Sun to light up your home as well as to power other
electrical gadgets in your home.
The solar energy is used in such a way that the heat from
the Sun is converted into reusable form with the help of
solar-cells and solar panels (in most cases, there is an active
solar energy system involved, which helps to harness the solar
energy and store it) and the energy so produced can be used for
a variety of purposes such as –
Heating purpose (mainly water heating, room heating).
Lighting in residential, commercial as well as common areas
(lighting public utilities such as streets, gardens, parks,
parking lots, etc).
Cooking (solar cookers were one of the first inventions among
all the application areas of solar energy.
Today they are very popular mainly in tropical countries
which receive maximum sunshine during mot part of the
year.)
Ventilating
Cooling purpose
Disinfection,
Desalination (large solar powered desalination units are very
common these days)
Fueling of solar vehicles (Such solar power-driven vehicles are
already out in the market in many countries. They are
specifically designed with solar panels to harness the energy
from the sunlight during daytime in order to fuel these solar
vehicles.)
"Solar
powered lights are mostly beneficial for such areas where
it is difficult to supply electricity, such as in remote
hilly and mountainous locations"
The principle behind the working of solar
lights is quite simple. The solar panels are positioned in
such a manner that they are able to harvest maximum
sunlight throughout the day. These solar panels then
convert the harnessed solar energy from the sun into
electrical energy, which is stored in the batteries
present inside the Light Emitting Diodes (LEDs).
Automatic controls are used to switch on these LEDs. In
fact, these automatic controls (containing a photo cell which
detects the change of luminosity and switch on automatically
when night falls) control the timing of the solar lights.
The solar powered lights are completely dependent on the
quality and amount of direct sunlight that is available
throughout the day. Greater is the sunlight received during
each day, more is the amount of solar energy produced. The
solar energy produced is therefore dependent on the daily
weather fluctuations and on the season (increased solar energy
production during the longer summer months, when there is
greater amount of sunshine available and reduced solar energy
production during the shorter and colder winter months).
Solar powered lights are mostly beneficial for such areas
where it is difficult to supply electricity, such as in remote
hilly and mountainous locations, where providing electricity
through cable lines is too expensive, or in islands (which is
cut off from the mainland by sea on all sides), etc.
You will be surprised with the large varieties of solar
lights available in the market today and the wide areas of
application of the solar powered lights, such as – solar lamp
posts, solar flood lights, solar fountain lights, solar powered
garden lights, solar pool lights, solar patio lights, solar
deck lights, solar path lights, solar yard lights, etc. Apart
from landscape lighting, the application of solar energy
fuelled lights also stretch to more professional areas such as
– solar traffic lights, solar traffic signs, solar street
lights, solar obstruction lights (used specifically in airports
and on meandering hill-side roads), solar marine lights,
etc.
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