Geothermal Energy

How Geothermal Energy affects life of many.

Geothermal Energy

Geothermal Energy is the heat from earth and its clean to use. Resources of geothermal energy range from shallow ground to hot water and hot rocks found under the earth.

Mapping it out...

Below is a map showing where geothermal energy is mostly found and used. The maps show the use of geothermal energy in North Carolina and throughout the whole USA.

The Development of geothermal energy

Geothermal energy is heat that comes from the Earth.

It began in ancient towns- the Romans, Chinese, and Native Americans used the hot mineral springs for bathing, cooking, and heating, but they did not use it as we do today.

Development of the technology...

As time goes on we find more ways to use geothermal energy. Some modern day uses of geothermal energy are spas, heating and cooling houses, heating sidewalks/roads to prevent freezing, greenhouses, drying fruits and vegetables, etc.

Process...

People can capture geothermal energy 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 water or provide heat for buildings. Geothermal heat pumps can do all sorts of things- from heating and cooling homes to warming swimming swimming pools.

Geothermal power plants...

1.) Hot water is pumped from deep underground through a well under high pressure.

2.)When the water reaches the surface, the water to run 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 condensates back to water.

5.)The cooled water is pumped back into the earth to begin the process again.

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Geothermal energy pump...

1.)Water or 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, starting 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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Environmental Concerns...

Highly unlikely that any geothermal power plant will be a threat to the environment. Studies show that emissions and other impacts of geothermal power plants are generally dramatically lower than other worried sulfur deposits.

Cost in geothermal energy...

power is sold at $0.03 to $0.035 per kWh. A power plant built today would probably require about $0.05 per kWh. Some plants can charge more during demand periods.