BCB311

Monday, February 27, 2006

SOLAR ENERGY IS AN EFFECTIVE WAY OF USING ENERGY SUSTAINIBLY.NAME EXAMPLES OF HOW SOLAR ENERGY CAN BE DERIVED?

A photovoltaic cell or called a photoelectric cell is used-sunlight hits it, creating electricity ( http://renewable-energy-source.info/solar-energy.html ).

A solar thermal collector has a dark absorber surface- sunlight hits the surface warming it. A fluid circuit then carries the heat energy derived from the collector away ( http://renewable-energy-source.info/solar-energy.html ).

A craft (used for motion) contains a solar sail- sunlight hits the sail and is directly converted into a force on the sail causing motion of the craft ( http://renewable-energy-source.info/solar-energy.html ).

Sunlight can also be used to supplement lighting in a building. Sunlight is focused on a fibre optic cable situated outside the building; the fibre optic then conducts light into the building ( http://renewable-energy-source.info/solar-energy.html ).


 
Simone Neethling
BCB Department
University of the Western Cape
241343632@uwc.ac.za

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