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Solar Energy

Solar Energy. Ashfield Direct Learning. Ks4 Energy. Ben Thorpe. What is it?. Solar power is the sun’s energy which has absorbed in to dark coloured plates and converted to heat or electrical energy. Solar energy is a renewable source of energy. Solar cells.

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Solar Energy

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  1. Solar Energy Ashfield Direct Learning Ks4 Energy Ben Thorpe

  2. What is it? • Solar power is the sun’s energy which has absorbed in to dark coloured plates and converted to heat or electrical energy. • Solar energy is a renewable source of energy.

  3. Solar cells • The solar cell or photovoltaic cell is a device which generates electricity directly from visible light. • A solar panel is made of many solar cells which usually have a total output of 12V

  4. Crystalline cells. • There are two types of solar cell. These are mono crystalline and poly crystalline. • These are wired in series to produce solar panels • As each cell produces a voltage of between 0.5 and 0.6 Volts, 36 cells are needed to produce an open-circuit voltage of about 20 Volts. This is sufficient to charge a 12 Volt battery under most conditions. • The output from a solar cell is at its greatest when the light hits the cell at right angles.

  5. Structure • Cover glass • Transparent glue • Anti reflective coating • Silicon and gallium arsenide conductor layers to generate current flow

  6. Advantages • Solar cells are silent and have no moving parts • Cause no environmental pollution in operation • Never run out • Can generate power where it is needed, without the need for electricity pylons and wires. • Are not unsightly

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