by zach lytle, jared freeman, kyle lewiecki. overview of solar power the solar power is energy...
TRANSCRIPT
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Solar PowerBy Zach Lytle, Jared Freeman, Kyle Lewiecki
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Overview of Solar PowerThe solar power is energy produced by the
sunIt is produced through nuclear fusionThe energy then goes through space to earth
in the form of light and heat energyThe energy is then used in various ways from
producing electricity to heating systems for houses
As it is considered a “Green Energy” it is heavily subsidized by the government
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Nuclear FusionNuclear fusion is the process of the nuclei
colliding and bonding into one nucleus (the center of an atom)
In stars the reaction occurs most commonly between hydrogen atoms, forming helium atoms
In the process matter is not conservedDue to the law of conservation of energy, as
matter is destroyed, energy therefore must be produced
The energy is in the form of photons (like light)
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Nuclear Fusion ContinuedEnergy is produced in reactions of materials
weighing less than ironThe reaction requires extreme amounts of
energy to start, currently the only way humans can start this reaction is through a nuclear explosion
In stars there is plenty of energy to support the reaction
All active stars do this reaction
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Photovoltaic CellsThere are four types of photovoltaic cellsThey are built out of the following Two layers of silicon, one negative, one
positiveA layer of anti reflective plasticMetal conductorsMetal backingEach 1/100 of an inch thickSilicon is a semi conductor
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Photovoltaic Cells ContinuedPhotons from the sun come and hit the cells, some
are reflected, some absorbed and some pass throughThe ones that are absorbed are absorbed by the
silicon semiconductorThe electrons of the negatively charged layer are
knocked loose from the atoms by the photonsOnce the electrons are moving a current is formed,
which can be converted into electricityThe electrons take the energy from the photon and
give it to electrons of atomsEach produces ½ a volt of energy
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Pictures
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Passive Solar SystemsA passive solar system does not use any
mechanics or electricity to gather the sun’s energy and will not track the sun across the sky
Materials on the house are used to collect or reflect the suns energy
One example of a passive solar system is a heating system
The heat from the sun’s rays heat air or water that then is distributed through the house to heat it
For water the heated air goes over the pipes heating the water inside
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Passive Solar Systems ContinuedPassive solar systems are also used to cool
house, as the material on the houses reflect the heat
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Active Solar SystemActive solar systems use mechanics and
electricity to aid in the collecting energy of the sun
Some solar panels use an active solar system to track the sun across the sky to let the solar panels produce energy for a longer period of time
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Active Solar HeatingThis heating system differs from an passive
heating system as it uses pumps to bring the water to a solar panel to be heated and then back around through the house to heat air to warm the house
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Advantages of Solar EnergyIt is a renewable energy sourceFossil Fuels are running out, the sun will not
run out for five billion years Solar systems are easily installed Solar power is low maintenanceHouse modules take up small amounts of
spaceThere is no carbon dioxide or other pollutants
released into the atmosphereThere is no waste released into water sources
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Disadvantages and Climate IssuesElectricity can only be produced during hours of
sunlight, making places near the poles and rainy places not very effective
Solar thermal energy plants are require large amounts of land, sometimes causing environmental damage
Solar systems cost large amounts of moneyObstructions, such as trees and buildings can hinder
solar panels effectiveness as they may block the sunExtremely inefficient compared to most energy
sources, only turning 20% of potential energy into energy
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Solar DevicesSolar Power is used for a variety of purposes,
from powering cities to complex gadgetsMost solar devices are built around
photovoltaic cells and solar panelsPhotovoltaic cells form solar modules with
form solar arrays
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Solar Panels
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Solar Phone Charger
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A Solar Plane!
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A Solar Car!
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A Solar Boat!
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Solar Lamps