How Solar Energy Works in Our Lives
You might have
already seen or own a solar powered calculator
or a solar powered wristwatch. These are just
a few examples of how solar energy works in
simple everyday units. Just a little (or a
lot of) sunlight is needed to make solar powered
items work. It is sometimes amazing how sunlight
can be transformed into electricity. It is
truly amazing how solar energy works.
There are other items that require no batteries
and use only solar cells besides wristwatches
and calculators. But when it comes to larger
homes and industrial applications, solar panels
or photovoltaic cells can be configured to
provide for some or all of the energy needs
of these structures. Some solar panels can
be used to light up alleyways and parking
lots while others are used for security cameras
and other monitoring equipment. As a matter
of fact, before it was released to the general
public, only satellites used solar energy.
It is still being used today to provide power
and electricity for satellites.
The way how solar energy works and how it
has proven to be a practical and economical
solution to renewable energy sources has truly
been remarkable. Solar energy has helped thousands
of communities in remote areas have both heat
and electrical energy without the need for
fossil fuel or wood. Areas that have much
exposure to sunlight have greatly benefited
from solar energy. Researchers and scientists
used to have a problem with how solar energy
works and because it was thought that, while
it was promising, it was just too expensive
to produce and the amount of space consumed
just to provide enough electricity was just
too impractical.
But today, many are already acknowledging
the wonders of how solar energy works because
of its many great benefits in saving the environment
and in saving on many electrical and utility
bills. Almost every electrical and electronic
device can be powered by solar energy for
longer periods of time with smaller photovoltaic
cells.
Sun Power!
The sun has enough power to for every home
and business establishment to last a lifetime.
Solar photovoltaic cells only harness about
15% of the sun’s energy and convert
it to electricity. With 1,000 watts of power
per square meter, the amount of energy being
harnessed today is just a fraction.
A photovoltaic cell or PV cell is a special
silicon-based semiconductor that is able to
convert sunlight into electricity because
of light absorption. The way how solar energy
works through these semiconductors is not
very hard to understand.
The silicon-based semiconductor is designed
to maximize the absorption of light. As light
is being absorbed, electrons move at a particular
direction. The movements cause currents and
currents provide electricity. Once a metal
rod it attached above and below the PV cells,
electricity is produced.
Take note though that this is just a basic
explanation of how solar energy works. If
you want to really study further the processes
involved in converting sunlight to electricity,
you can find several solar energy projects
that will explain the processes of how solar
energy works.
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