GEOTHERMAL ENERGY

BY: JOHN AND VIKI

Where Geothermal Energy Comes From And The First Use of Geothermal Energy

Geothermal energy comes from the heat within the earth. People around the world use geothermal energy to produce electricity, to heat buildings and greenhouses, and for other purposes.


The first time geothermal energy was used was to to produce electricity is a relatively new industry. It was initiated by a group of Italians who built an electric generator at Lardarello in 1904. Their generator was powered by the natural steam erupting from the earth.

Where is Geothermal Found And How Do We Get It?

What does geothermal energy look like? Some visible features of geothermal energy are volcanoes, hot springs, geysers, and fumaroles. But you cannot see most geothermal energy. Usually geothermal energy is deep underground. There may be no clues above ground to what exists below ground.


Geologists use many methods to find geothermal resources. They may study aerial photographs and geological maps. They may analyze the chemistry of local water sources and the concentration of metals in the soil. They may measure variations in gravity and magnetic fields. Yet the only way they can be sure there is a geothermal resource is by drilling wells to measure underground temperatures.


The earth is a hotbed of geothermal energy. 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 known as the "Ring of Fire." The Ring of Fire rims the Pacific Ocean and is bounded by

Japan, the Philippines, the Aleutian Islands, North America, Central America, and

South America.

Safety Risks That Come With Geothermal Energy

The use of geothermal energy is growing rapidly throughout the United States. Geo-Thermal systems use the heat from the earth to create electricity, and to heat and cool buildings. Some geothermal systems pump water underground through piping, allow it to be heated by the earth, and then use the hot water to create electricity or heat/cool buildings. Other systems drill directly into the earth’s natural geothermal reservoirs, using the resulting hot water and steam to create electricity. Some geothermal systems use a brine or saltwater solution while others will use glycol. These solutions may pose hazards of their own to workers.
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Which source is the best to use

Geothermal heat pumps (GHPs), sometimes referred to as GeoExchange, earth-coupled, ground-source, or water-source heat pumps, have been in use since the late 1940s. They use the constant temperature of the earth as the exchange medium instead of the outside air temperature. This allows the system to reach fairly high efficiencies (300% to 600%) on the coldest winter nights, compared to 175% to 250% for air-source heat pumps on cool days.

Cost

Geothermal heating system price varies depending on the type of loop system, usually either vertical or horizontal. On average, a typical home of 2500 square feet, with a heating load of 60,000 BTU and a cooling load of 60,000 BTU will cost between $20,000 to $25,000 to install.


THIS IS A ONE TIME FEE AND YOU WILL NOT HAVE TO PAY EVERY MONTH LIKE YOU HAVE TO FOR ELECTRIC

Conclusion

Geothermal enedgy is fairly expensive but it is only a one time initial fee and you don't have to worry about paying month after month forever. The energy is very clean and is straight from the ground and is natural. The safety risks are nothing compared to other energy forms such as nuclear or fusion.
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