More Related Content
Similar to Hydropower plants.pptx hydropower plants (20)
More from VrushaliPawar31 (20)
Hydropower plants.pptx hydropower plants
- 2. Sources of energy Energy sources are categorized as renewable or non-renewable. • Renewable energy. A source of energy is considered renewable if it comes from natural sources or processes that are constantly replenished. • Examples are solar (from the sun), wind, water, geothermal (from the earth) and biomass (from organic materials). • Non-renewable energy sources don’t replenish. • They were formed when prehistoric plants and animals died and were gradually buried by layers of soil rock. • The kind of fuel that was created varies depending on whether it came from plants or animals, how long it was buried, at what temperature and under what pressure. • Types of non-renewable energy are natural gas, coal and oil.
- 4. Renewable energy Solar Energy: Solar energy is that energy is derived from the sun. • The sunlight is allowed to fall on solar panels and then stored in solar cells. Solar energy is harnessed in the form of light and heat. • The solar energy falling on the solar panels is transformed to thermal energy and then this thermal energy is used for various heating purposes. Wind Energy: Wind energy is obtained from the force of the wind. • A large number of windmills are set up to harness the power of wind and then generate electricity.
- 5. Renewable energy • Tidal Energy: Tidal wave energy comes from the movement of the sea waves when tides change from high to low. • Hydraulic Energy: This type of energy is produced by the water we store in reservoirs or artificial lakes. • Geothermal Energy: This energy is generated from the heat stored in the earth. This type of energy is used for heating a house or generating electricity. • Biomass Energy: The plants fix solar energy through the process of photosynthesis to produce biomass. • This biomass passes through various cycles producing different forms of energy sources. • For example, fodder for animals that in turn produce dung, agricultural waste for cooking, etc.
- 6. Non-Renewable energy Nuclear energy – stored inside tiny atoms that are invisible, but make up the elements of the entire universe. • Nuclear energy is released when atoms join together (fusion) or split (fission). • The fusion reaction in the sun provides warmth and light, while the fission reaction at a nuclear power plant creates enough energy to power large cities.
- 7. Types of energy • Gravitational energy – associated with a gravitational field, like the one that surrounds the Earth. E.g. Gravitational energy is the reason why riding your bike downhill is faster than riding your bike uphill. • Kinetic energy – anything that moves is using this kind of energy. Examples include running, cycling, climbing – even swiping your finger across your smart phone! • Wind turbines capture the kinetic energy in wind and transform it into mechanical energy. • Mechanical energy – stored in objects by tension. When the tension is released, motion occurs. • A compressed spring contains mechanical energy as does a stretched rubber band.
- 8. Types of energy • Chemical energy – stored within bonds between molecules. Sources include natural gas, gasoline, coal and batteries. • Electrical energy – comes from tiny charged particles called electrons. The electricity in our homes is made by humans. • Solar (radiant) energy – energy that comes from the movement of light. • Sound energy – produced when an object is made to vibrate producing a sound. Your voice and musical instruments use sound energy. • Thermal (heat) energy – created from moving molecules. The energy that comes from a fire is thermal energy.
- 9. Types of power plants • Nuclear power plants • Hydroelectric power plants • Coal-fired power plants • Diesel-fired power plants • Geothermal power plants • Gas-fired power plants • Solar power plants • Wind power plants