solar power jamilia cobbin, nou chee khang and pachia vang
TRANSCRIPT
Description
Conversion of sunlight into electricity either by using photovoltaic (PV) or concentrated solar power (CSP)
Renewable
PV vs.CSPPhotovoltaic (Direct)
Solar Cell Devices converting light
into electrical energy Solar Panels Usually provides for :CalculatorsWatchesSatellitesWater PumpsLights/ Home appliances
Concentrated Solar Power (Indirect)
Technology Use mirrors to reflect
and concentrate sunlight
Power towers, solar dishes and parabolic troughs
Usually used for:Boiling water
…It works like
PV: • Light hits the cells, creating an electric
field Electrons are knocked loose from the
atoms of semi conductor materials An electrical field is formed
It works like (cont.)
CSP: Mirrors: focus sunlight and heats
working fluid (heat that can be moved by liquid or by air)
Used to power an engine that drives a generator
Electricity is produced
Advantages
Free heat and sun! Clean and efficient No electrical expense Solar cells contain little maintenance
and last for a lifetime Versatile You can make your own
…Disadvantages Expensive to purchase/install Not available at night or during storm May disappear briefly if there is a lack of
light
Sources : Information
http://en.wikipedia.org/wiki/Solar_power
http://www.eere.energy.gov/basics/renewable_energy/solar.html
http://www.solarhome.org/infoadvantagesofsolarpower.html
http://science.nasa.gov/science-news/science-at-nasa/2002/solarcells/