Solar Power

Solar Power

Jamilia Cobbin, Nou Chee Khang and PaChia Vang

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

How does it work?…

…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

Have you seen this…

How does it apply to households

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/

Bibliography:Info

Hoke, John. Solar Energy. New York: Franklin Watts Inc, 1968

Sources: Pictures

http://i.treehugger.com/osakasolar.jpg http://www.portablesolarpanels-

forsale.com/solar-energy-facts/ http://www.bcenergyblog.com/uploads/

image/solar%20power(1).jpg http://www.ubergizmo.com/photos/

2007/11/solar-car-converted.jpg