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PHOTOVOLTAIC SOLAR PANELS. By Phongphisut Kaewwongsa. Photovoltaic solar panels. - PowerPoint PPT Presentation
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PHOTOVOLTAIC SOLAR PANELS
BY
PHONGPHISUT KAEWWONGSA
Photovoltaic solar panels
• Photovoltaic solar panels use solar cells to convert
sunlight directly into electricity. Photovoltaic is abbreviated
PV for short. PV is one of two main methods used to make
use of solar energy. The generation of electricity from
photovoltaic solar panels is safe and effective.
How solar panels work ?
• In direct sunlight at the surface of the equator, a maximally efficient
photovoltaic cell about 1/5m in diameter creates a current of approximately
2 amps at 2 volts, however, due to the Earth’s atmospheric interference,
terran solar panels will never perform as well as solar panels exposed
directly to the sun’s rays. (see space-based solar power.) Years of
overheating and physical wear can, however, reduce the operation efficiency
of the photovoltaic unit. Solar cells become less efficient over time, and
excess energy is released into its thermally conductive substrate as infrared
heat.
A quick overview of the way a photovoltaic solar panel works:
• 1. The sunlight strikes the surface of the solar cells.
2. The light knocks loose electrons, creating an electron imbalance.
3. The electrons then flow from the backside of the solar cells to the front
side.
• This flow of electrons is what we know and use as electricity. Multiple solar
cells can be connected in what is known as a module. Multiple modules are
created to form an array.
Residential Grid Connected PV System
• A PV system is suitable for both northern and southern climates
since it depends on the amount and intensity of sunlight, not the
amount of heat like its’ counterparts which make use of the sun’s heat.
• Although the intensity of sunlight does increase as you get closer
to the equator, there are many people that get great use
from photovoltaic systems in more northern latitudes. Even people in
England where it is always rainy and cloudy have created large PV
systems that manage to produce enough electricity to supply their
entire homes or businesses.
PV systems are very popular for residential solar power. Another great
trait about PV systems is that they are ‘modular’ meaning that you can start
with a smaller, basic system and easily add on to it. You may just start with
one or two panels and get the main controls setup and then add on more
panels a few months down the road as you have more time and money.
While you can start off small, you may also create a complete solar energy
system right from the beginning if you have the money, time, and will to do
so. It will take several Photovoltaic Solar Panels to make a complete system
large enough to power your entire home.
Even if when you get started with just a few PV panels, you could be producing
enough electricity to cut your electric bill by 30% – 40% and that could be a lot
of money off your electric bill every month.
This is the end of
My Presentation
THANK YOU
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WATCHING
Created by
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Presenting
By
Phongphisut Kaewwongsa
I hope you enjoy my Presentation ♫ ♪