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Geothermal FULL.pptx - GEOTHERMAL ENERGY WHAT IS GEOTHERMAL...

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GEOTHERMAL ENERGY
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WHAT IS GEOTHERMAL ENERGY? Is a natural form of renewable energy. Energy that generated from the decay of natural material at the earth’s core. Estimated the temperature at the earth’s core is about 6000ºF. The earth’s core contains an abundance heat that is constantly leaking to the surface. The adjectve geothermal originates from the Greek roots ”geo” , meaning earth , and ”thermos” , meaning hot .
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The core itself has two layers: a solid iron core and an outer core made of very hot melted rock, called magma. The mantle which surrounds the core and is about 1,800 miles thick. It is made up of magma and rock. The crust is the outermost layer of the earth, the land that forms the contnents and ocean floors. It can be three to five miles thick under the oceans and 15 to 35 miles thick on the contnents. EARTH’S INTERIOR
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The most active geothermal resources are usually found along major plate boundaries where earthquakes and volcanoes are concentrated. Most of the geothermal activity in the world occurs in an area called the Ring of Fire . This area rims the Pacific Ocean. Over 20 countries: Iceland, U.S., Italy, France, China, Japan, etc. The United States is the country with the greatest geothermal energy production.
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Geothermal energy can capture through: Geothermal power plants, which use heat from deep inside the Earth to generate steam to make electricity. Geothermal heat pumps, which tap into heat close to the Earth's surface to heat water or provide heat for buildings. Radioactive decay of element such as uranium thorium.
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1) Hot water is pumped from deep underground through a well under high pressure. 2) When the water reaches the surface, the pressure is dropped, which causes the water to turn into steam. 3) The steam spins a turbine, which is connected to a generator that produces electricity. 4) The steam cools off in a cooling tower and condenses back to water. 5) The cooled water is pumped back into the Earth to begin the process again. HOW IT WORK?
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HOW IT WORK? 1) Water or a refrigerant moves through a loop of pipes. 2) When the weather is cold, the water or refrigerant heats up as it travels through the part of the loop that's buried underground. 3) Once it gets back above ground, the warmed water or refrigerant transfers heat into the building. 4) The water or refrigerant cools down after its heat is transferred. It is pumped back underground where it heats up once more, startng the process again. 5) On a hot day, the system can run in reverse. The water or refrigerant cools the building and then is pumped underground where extra heat is transferred to the ground around the pipes.
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ELEMENT OF GEOTHERMAL ENERGY. 1) Heat source : Underlying the system at depth is hot magma.
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