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Renewable Energy - Coggle Diagram
Renewable Energy
Wind is a type of solar energy. Wind is caused by the uneven heating of the atmosphere by the sun, the differences of the earth's surface and the rotation of the earth. Wind flow can be harvested by wind turbines to generate electricity.
Wind turbines convert kinetic energy from the wind into power. A generator is then used to convert the mechanical power into electricity, powering homes and businesses.
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Solar energy is a clean, inexpensive, renewable power source that is harnessable nearly everywhere in the world - any point where sunlight hits the surface of the earth is a potential location to generate solar power. And since solar energy comes from the sun, it represents a limitless source of power. Renewable energy technologies generate electricity from resources that are infinite.
Solar power is usable energy generated from the sun in the form of electric or thermal energy. Solar energy is captured in a variety of ways, the most common of which is with photovoltaic solar panels that convert the sun’s rays into usable electricity.
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Tidal power or tidal energy is the form of hydropower that converts the energy obtained from tides into useful forms of power, mainly electricity.
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Tidal energy has a high initial cost and is a relatively new technology. It mainly generates energy through four methods: Tidal stream generator, Tidal barrage, Dynamic tidal power, and Tidal lagoon.
Tidal power is taken from the Earth's oceanic tides. Tidal forces are periodic variations in gravitational attraction exerted by celestial bodies. These forces create corresponding motions or currents in the world's oceans. Due to the strong attraction to the oceans, a bulge in the water level is created, causing a temporary increase in sea level. As the Earth rotates, this bulge of ocean water meets the shallow water adjacent to the shoreline and creates a tide.
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Hydroelectric energy is produced by the force of falling water. The capacity to produce this energy is dependent on both the available flow and the height from which it falls. Building up behind a high dam, water accumulates potential energy. This is transformed into mechanical energy when the water rushes down the sluice and strikes the rotary blades of turbine. The turbine's rotation spins electromagnets which generate current in stationary coils of wire. Finally, the current is put through a transformer where the voltage is increased for long distance transmission over power lines.
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Advantages:1.Play an important role in reducing greenhouse gas emissions.2.Fuel is not burned so there is minimal pollution.
3.Water to run the power plant is provided free by nature.
Biomass is the general term for material whose origin is living, or recently dead organisms. The most common example of biomass as a fuel is wood, which is often burned in its direct form. Biomass can also be converted into biofuel. This is often done with corn, which is converted into ethanol.
Biomass is an important alternative source of energy because, while burning it does release carbon, the carbon is all recent and so is part of the current carbon cycle. This makes biomass effectively carbon neutral, meaning it doesn't add any carbon to the atmosphere that wasn't already there.
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