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Alternative energy

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Alternative energy

SOLAR ENERGY -- THE ENERGY OF THE FUTURE? About 47 per cent of the energy that the sun releases to the earth

actually reaches the ground. About a third is reflected directly back into space by the atmosphere. The time in which solar

energy is available, is also the time we least need it least - daytime. Because the sun's energy cannot be stored for use another

time, we need to convert the suns energy into an energy that can be stored. One possible method of storing solar energy is by

heating water that can be insulated. The water is heated by passing it through hollow panels. Black-coated steal plates are used

because dark colours absorb heat more efficiently. However this method only supplies enough energy for activities such as

washing and bathing. The solar panels generate "low grade" heat, that is, they generate low temperatures for the amount of heat

needed in a day. ...

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