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This document outlines the fundamental principles of solar energy production, focusing on how solar radiation is converted into electrical energy using photovoltaic cells and solar panels. It discusses the process involving the sun’s temperature, solar radiation, and the generation of electricity through the heating of liquids to produce steam, which drives turbines. The text emphasizes the importance of solar energy in everyday devices and larger systems, the role of batteries in energy storage, and the automation of control processes in solar power systems.
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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.
