Alternative energy
Alternative energySOLAR 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. In order to generate "high grade" heat, intense enough to convert water into high-pressure steam which...
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