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What is Geothermal Energy?

What is geothermal energy? Geothermal energy comes out of the earth’s atmosphere. The term “geothermal” is derived from the Greek terms “geo,” “Earth” and “heat.” Worldwide there is geothermal energy for the development of power, for heating buildings and greenhouses, and for other purposes.

Geothermal energy is known as a source of green energy as the water is recharged with the precipitation and the earth produces constant electricity.

For thousands of years geothermal energy has been used for cooking and heating in some nations. It’s all energy generated from the inner heat of the Earth.

This thermal energy is contained beneath the earth’s crust in the rock as well as in fluids. This can be found many miles from a thin layer underneath the atmosphere, and much deeper down to the intensely warm molten rock or magma. So, after get an answer about What is geothermal energy? Now we can go forward the next question.

Where Is Geothermal Energy Found?

If we want to get things more clear about What is geothermal energy and how is the impact of geothermal energy? Geothermal energy is defined by volcanoes, lakes, geysers, and fumaroles. Yet much geothermal activity can’t be used. Usually, deep underground geothermal energy.

Such steam and hot water underground reservoirs may be used directly for producing energy or heating and cool houses.

The constant temperature of the earth’s atmosphere, over 10 feet (three metres), may be utilized by a geothermal thermal pump device to heat a home during the winter and cool from the house to move it in the summer to the comparatively cooler ground.

Production of Geothermal Energy

The question is how is geothermal energy generated? In order to generate geothermal energy, wells, which are often a mile deep or longer, are poured in underground water reservoirs to tap steam and very hot water to power turbines linked to generators of electricity. In Larderello, Italy, the first geothermal power was produced in 1904.

Geothermal power systems have three types: dry steam, flash and binary:

“Direct Use” or heating Whether a hydrothermal resource’s temperature is about 50F or above it may be specifically used in spas or for thermal structures, in developing plants, in warm fish ponds or for other applications. Hydrothermal heat resources in the USA and virtually every nation in the world are ideal for heating. For their public building, schools and houses, most residents in Iceland and more than 500,000 citizens in France using geothermal energy. Geothermal heat pumps for heating and cooling residences and offices are employed outside the United States outside 45 countries. Geothermal capacity is utilized by Utah, Washington, Nevada and many other states for heating entire districts. Geothermal heat is also used for the drying of ceramics, lumber, vegetables and other foods.

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High temperature:

Energy production It may be used for the generation of electricity if the temperature of a hydrothermal resource is about 220F and above. The majority of geothermal resources producing power have temperatures between 300 and 700 F, but geothermal lakes may reach almost 1.000 F.

There are two major forms of hydrothermal energy for electricity production: dry steam reservoirs (vaporized) and hot water reservoirs (liquid-dominated).

Dry Steam:

Rarely, however highly effective, dry steam reservoirs generate electricity. The Geyser is the biggest and most popular reservoir for dry steam in California. Steam is collected from 7,000 to 10,000 meters underground by boiling wells here. The generated steam may be directly piped from the geothermal pool into a turbine generator in a dry steam reservoir. In the cooling system of the plant the accumulated steam (condensed gas) will be used to re-insert energy and heat.

Hot Water:

The most common type of hot water geothermal reservoirs. The hot water is not vaporized in a liquid-dominated pool, as the pool is saturated with water, and is under pressure. The hot water from geothermal reservoirs is delivered to one or more separators for generating electricity when the heat is reduced and the vapor flashes into a vapor. The steam is then pushed to produce energy by a turbine generator. The steam is then drained and concentrated and then pump into the geothermal reservoir or into the cooling system in the field.

Binary cycle:

When the water in a hot water reservoir is not hot enough to convert to the steam, a binary cycle power plant is utilized. While heating the fluid that spreads once heated is used for lower temperatures, hot water. The rotor is driven by the pressurized fluid increased. The gas is then drained and collected to be heated regularly.

 Geothermal Energy and the Environment

Geothermal energy is an environmentally-friendly form of renewable energy.

Geothermal steam, hot water and other chemicals and industrial products are usually found with concentrations of hydrogen (a gaseous substance that tastes like rotten eggs). Geothermal systems utilize “scrubber” systems to treat air and other gasses from hydrogen sulfide. Gasses are often transformed into markets, including fluid fertilizer. Also, modern geothermal power stations will pump these gasses into the geothermal ponds again.

As for fossil fuel plants, geothermal plants do not use energy for electricity generation. Geothermal power stations extract from the coal-fired plants less than one to four percent of CO2.

advantages and disadvantages of geothermal energy

as we answer above What is geothermal energy? Geothermal energy is a sustainable, still largely untapped, renewable energy source. It has the potential to meet future heating, cooling and electricity requirements, as a environmentely friendly resource.

In order to fully exploit this natural resource, many benefits of geothermal energy but also several problems have to be overcome.

advantages of geothermal energy

  • Geothermal energy is more environmentally friendly than traditional fuel sources such as coal and other fossil fuels. While geothermal energy emission exists, this in contrast to fossil fuels is very small.
  • Geothermal energy is an energy supply that will continue for around 5 billion years before the Earth is destroyed by the sun. The hot lakes are replenished within the Planet, rendering it clean and safe.
  • In comparison to other renewable resources including wind and solar energy, geothermal is a stable source of energy. That is since, unlike wind or solar power, the fuel is still ready to be used.
  • It is simple to quantify electricity produced from this resource because it does not fluctuate in the same way as other energy sources including wind and solar. This helps one to reliably estimate the power production of a geothermal system.

disadvantages of geothermal energy

  • The biggest single disadvantage to geothermal energy is that it is position dependent. Geothermal projects need to be installed in locations where the energy is available, which ensures that certain regions are not willing to utilize this ability. Naturally, if you live in a place with easy access to geothermal energy such as Iceland, this is not a concern.
  • Although geothermal energy usually fails to remove greenhouse gases, many of these gasses are collected below the Soil and released into the atmosphere when drilling. While these gasses do obviously discharge into the environment, the rate increases near to geothermal plants. However, the concentrations of such chemicals tend to be significantly smaller than those of fossil fuels.
  • Geothermal energy is an expensive option to use with prices starting from about $2 million to $7 million for a 1-megawatt power station. Furthermore, when the initial cost is high the expense of a long-term investment can be recovered.

References:

https://www.twi-global.com/technical-knowledge/faqs/geothermal-energy/pros-and-cons

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