INCREASING EFFICIENCY OF SOLAR PANEL - EXPT.
A
Solar Panel is an excellent source of renewable energy as it converts solar
energy to electricity. But there are many factors like dust, change in climate
and direction of facing of the panel which decrease its efficiency.
So
we have tried to increase the solar panel’s efficiency by making it face
sunlight throughout the day so that it can absorb maximum amount of sunlight. That
means we tried to rotate the solar panel by 15 degrees every hour.
First
we carried out the experiment manually by rotating the solar panel every hour
and recording the output voltage using multivoltmeter. When compared with the
normal readings it was considerably greater! So now we tried to rotate the
solar panel on its own by using a Micro controller and by programming it such
that it can rotate the motor 30 degrees for every 2 hour interval.
For
the “Automatic-rotating” part we used a
“Atmega-8” microcontroller and used AVR studio to program it such that
it outputs voltage for 2-seconds every 2 hour interval so that the motor
rotates the panel approximately 30 degrees (A stepper motor or a Servo motor
will serve the purpose better).
Now
the panel faces east in the morning, becomes horizontal at noon, faces west at
evening, thus facing the sun almost throughout the day.
From
the experiment we recorded the following values
After
the experiment the difference between individual values ranged from
5%
to 15%
But
after taking the average for three days the difference reduced to 6%
So
on the whole there was a gain of 6% by rotating a small solar panel.
There
are other ideas like wiping out the dust from solar panels every hour
automatically or arranging mirrors to increase sunlight radiation on the panel
etc. Which you might like to try out !
You might consider watching video of this experiment
how much dose the solar Pendel cost?
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