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all about solar energy
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SOLAR ENERGY
Presented by:
Yna Vhea Purugganan
Iris Rivera
Kerivan Durupan
Lyra Ibon
Nina Perdonan
DEFINITIONS:
Solar energy is an energy source that involves tapping the radiant
light energy that is emitted by the sun and converting it into
electricity.
Homes that are powered by solar energy have been installed with
batteries that have a capability of storing power that can operate
electrical appliances such as TV, Radio, computers and refrigerators.
Solar energy is the light and radiant heat from the Sun that
influences Earth's climate and weather and sustains life. In the
environmental context, it is also used to refer to the process of
generation of electricity by tapping the solar energy.
Solar energy is the sun’s rays (solar radiation) that
reach the Earth. This energy can be converted into
other forms of energy, such as heat and electricity.
Solar energy is by far the Earth's most available
energy source. Solar power is capable of providing
many times the total current energy demand.
SIMPLE FACTS:
Discovered/ invented in the time of 1800’s. it was
observed that the sunlight was capable of generating
electrical power.
It was obtain by the radiation of the sun
Solar energy was formed by the solar panel which
is placed directly under the sun to capture the sun
light in the solar cells to generate electricity.
Solar energy is a renewable form of energy and is
much cheaper and durable. Solar heater nowadays,
are used most commonly everywhere.
Solar technologies are broadly characterized as
either passive solar or active solar depending on the
way they capture, convert and distribute solar
energy. Active solar techniques include the use of
photovoltaic panels and solar thermal collectors to
harness the energy. Passive solar techniques include
orienting a building to the Sun, selecting materials
with favorable thermal mass or light dispersing
properties, and designing spaces that naturally
circulate air.
WHAT IS SOLAR POWER?
Solar power is the conversion
of sunlight into electricity, either directly
using photovoltaics (PV), or indirectly
using concentrated solar power (CSP). Concentrated
solar power systems use lenses or mirrors and
tracking systems to focus a large area of sunlight
into a small beam. Photovoltaics convert light into
electric current using the photoelectric effect
HOW DOES SUNLIGHT BECOME SOLAR POWER?Photovoltaic (PV) solar panels convert sunlight into electricity. These
panels are usually installed on the top of or near homes and commercial
facilities where they have maximum exposure to the sun. PV systems are
effective any time the sun is shining. When sunlight is intense and strikes
a PV module directly, more electricity is produced
Panels are becoming more common in urban and sub-urban areas as
customers look to supplement their typical energy needs with alternative,
renewable energy. Typically, one solar photovoltaic module cannot
produce enough energy to power a home or business, so a number of
modules or panels are grouped together to form a solar array
HOW DOES SOLAR ENERGY BECOME ELECTRICITY?
The first step in the process occurs when rays of
light from the sun strike the cells within PV modules
(modules are commonly called “panels”). As the light
energy hits the photovoltaic cells, electrons are
excited and begin to flow. Multiple cells are
connected in one module, and several modules are
connected together to form an array, all harnessing
and summing the flow of this electric power.
A PV array produces electricity whenever the sun shines on it.
This is true from sunrise until sunset, and often times even after
the sun sets! (A full moon on a clear night can actually produce
small amounts of current from a PV system.) Generally speaking,
an array will produce its maximum power between roughly
9:00am and 3:00pm. During those hours, with the array pushing a
strong flow of DC power into the inverter, and the inverter in turn
delivering a strong flow of AC to the home, it is very likely that
there will be a surplus of electric power available at the house.
Why? During these hours, many homes are empty, while their
occupants are off to work or school. Even for those at home during
the day, their need for artificial lighting (typically about 25% of a
home’s electricity consumption) will be much lower
SOLAR ENERGY IN MANY THINGS
The energy from the sun makes rain fall and wind
blow. We can capture that energy with dams and
windmills.
Coal, oil, and natural gas were made from prehistoric
plants and animals. The energy in them came from the
sun. We use that energy to cook our food, warm our
houses, run our cars, and make electricity.
SOLAR ENERGY IS RENEWABLE
Solar energy is free and clean. There is enough for
everyone, and we will never run out of it. Solar energy is
renewable. The sun will keep making energy for millions of
years. Why don’t we use the sun for all our energy needs?
We don’t know how to yet. The hard part is capturing the
sunlight. It shines all over the Earth and only a little bit
reaches any one place. On a cloudy day, most of the light
never reaches the ground at all.
USING SOLAR ENERGY
Solar Collectors- capture the sunlight and turn it into heat.
People can heat their houses and their water using the sun’s
energy.
Solar cells can turn solar energy into electricity. Some toys and
calculators use solar cells instead of batteries.
Solar panels are made of many solar cells. Some people put
solar panels on their home. These solar panels can make enough
electricity for a house. Solar panels are good for houses and
buildings without access to power lines.
THINGS USING SOLAR ENERGY
Solar charger
Solar powered compacting
trash can
Solar cooker
Solar dryer
Solar fan
Solar furnace
Solar inverter
Solar keyboard
Solar lamp
Solar roadway
Solar Spark Lighter
Solar still
Solar tree
Solar vehicle