Geothermal Energy For Human Use I FULL VIDEO

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Geothermal Energy For Human Use
Geothermal energy, originating from the Greek words geo (earth) and therme (heat), a type of renewable energy derived from the heat stored beneath the Earth's surface. This heat originates from the Earth's core, where temperatures reach several thousands of degrees Celsius.
Geothermal energy can be harnessed in various ways:
1. Geothermal Power Plants: Geothermal power plants utilize the heat from deep inside the Earth to produce steam, which is then used to generate electricity. They are typically constructed in areas where the temperature is particularly high just below the surface or near regions with geysers, hot springs, or volcanic activity.
The hot water or steam is brought to the surface where it drives turbines connected to generators, producing electricity. After driving the turbines, the steam or water is condensed and returned to the reservoir to complete the cycle. This process can supply electricity to communities.
2. Direct Use Applications:
Direct-use applications of geothermal energy encompass a range of purposes.
In Space Heating: Geothermal energy is used to directly heat buildings, reducing the need for traditional heating methods and lowering energy costs.
In Agricultural Applications: Greenhouses utilize geothermal energy to maintain optimal temperatures for plant growth, extending growing seasons, and increasing crop yields.
In Industrial Processes: Geothermal energy is employed in various industrial applications, such as food drying, lumber drying, and other processes requiring heat.
These are often done by circulating water through underground pipes to absorb the Earth's heat.
3. Geothermal Heat Pumps: These systems use the heat coming from close to the earth’s surface to heat and cool buildings. They transfer heat between the ground and the building in winter for heating; and in summer, they transfer heat from the building to the ground for cooling.
This is how geothermal heat pumps work: water or refrigerant moves through a loop of pipes.
In winter, the water or refrigerant warms up as it travels through the loop buried underground. When it returns to the surface, it transfers its warmth to the building. After releasing its heat, the water or refrigerant cools down. Then, it goes back underground to warm up again, repeating the cycle. In short, heat is absorbed from the earth to warm the building.
In summer, the system can operate differently. It uses water or refrigerant to cool the building and then is pumped underground where extra heat is transferred to the ground around the pipes. Thus, heat is discharged into the earth to cool the building.
Despite occasional seismic activity and the need for careful management to prevent underground reservoir depletion, geothermal energy is renewable and continuously generated by the Earth's core heat through mineral radioactive decay. Moreover, it's a clean, dependable energy source that emits far fewer greenhouse gases than fossil fuels.
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