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Engineering Technology …. Team member: 1) Ayra Umayrah 2) Ahlam Awateef 3) Waseem Akram 4) Ameerul Ahwaz 4 MODEM. THE PRODUCTION OF ELECTRICAL ENERGY. SOLAR. The sun is another main source of energy on earth. It is believed that the sun temperature is about 15 million Kelvin. SOLAR RADIATION
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Engineering Technology… Team member:1) Ayra Umayrah2) Ahlam Awateef3) Waseem Akram4) Ameerul Ahwaz4 MODEM
The sun is another main source of energy on earth. • It is believed that the sun temperature is about 15 million Kelvin. • SOLAR RADIATION The released energy makes its way to the sun’s surface (photosphere) and then to outer space in the form of electromagnetic radiation (electric wave and magnetic field). • Electricity is generated when solar radiation is directed to a voltaic photocell. • The electrical energy is limited and small in quantity depending on the amount of radiation.
Electricity cannot be obtained in the dark. • Solar energy is used, e.g , in calculators and watches. • Bigger electricity generation systems that use solar panels to collect heat by heating liquid in the panel tubes. • Liquid will turn into high pressure steam. • The steam is then conveyed to the turbine to turn the generator, thus generating electricity. • Batteries are installed into the system to retain the electrical energy when there is no solar (at night).
Batteries are only functional in the absence of the sun. • All the control processes are made automatic. • Usually, solar panel are installed on rooftops. • Solar energy can also be used to supply hot water in a building. • Hot water produced is collected in a special tank and is released when required.
