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What is Geothermal Heating?

Nowadays all the global communities talk about renewables energies like solar energy, hydraulic energy, and wind energy and their benefits, but there is a type of energy produced by the heat inside Earth, it called geothermal energy or geothermal heating, so what is geothermal heating? The heat inside the earth is the source of geothermal energy. The Greek word “geotherme” is geo- and “heat “— and is used globally to produce electricity, to power buildings and greenhouses and for other uses. About 4,000 miles below the surface of the earth is the core of the world. The twin-faced heart comprises of a heavy center of iron, very hot molten iron. The core temperature figures vary between 5,000 and 11,000 Fahrenheit (F). The slow decline of radioactive particles, which is common in all materials, constantly produces heat on the Planet.

The crust, partially clay and composed of magma, is covering the earth’s core. The suit has a width of 1,800 miles. The outermost layer of the planet, the insulating mantle, is not a single continuous rock sheet, like an envelope of an egg. Such plates of continents and ocean floors drift apart and move each other in a process called continental drift at the average rate of approximately an inch.

What is the presence of geothermal energy? Geothermal energy is characterized by volcanoes, thermal springs, geysers, and fumaroles. But most geothermal energy can’t be seen. Usually deep underground geothermal energy. The Planet is a thermal energy hotbed. The most powerful geothermal energy is normally found on large flat lines of localized earthquakes and volcanoes. The Ring of Fire is situated along the Pacific Ocean and bordered by China, the Philippines, the Aleutian Islands, North America, Central, and South America. So, after reading all of this now we can answer the question of What is geothermal heating?

History of geothermal heating:

Most antiques have been bathed by hot mineral springs, cooking, and lighting, which included the Romans, Chinese, and Native Americans. The worldwide spas, heated houses, and agricultural and industrial installations also hire energy from hot springs. There are many who claim the inherent healing powers of hot mineral streams.

Geothermal power is a relatively recent technology to produce electricity. It was started at Lardarello in 1904 by a group of Italians who installed an electric generator. The turbine was powered by the natural energy that produced from the ground. In 21 nations, including the United States, energy is now generated by geothermal power.

Geothermal energy in this century:

What is geothermal heating in the 21st century? Some of the Important facts about geothermal heating must we know, Geothermal resources include four main types: hydrothermal, pressure, hot dry rock, and magma. The only popular use today is hydrothermal energy. The other three resources are still in their development.

There are common water (hydro) and heat (thermal) ingredients in hydrothermal resources. This steam or hot water is usually used to raise the soil of magma so that the water flows intensely through a crack, caught between broken rocks or weak rocks. Depending on the temperature and size of the hydrothermal deposits, there are many geothermal systems are used for various energy purposes:

Hydrothermal resources are the common ingredients of water (hydro) and heat (thermal). These hot or steamy geothermal reservoirs occur naturally where magma nears the surface enough to heat water trapped in fractured or powerful rocks, Or when water goes along the faults at great depth. Depending on their temperature and how large they are, hydrothermal reservoirs are used for various energy applications.

Low Temperature: “Direct Use” or Heating

 If the hydrothermal tool temperature is about 50F and above, it may be used for residential or industrial buildings directly grow crops, hot fish ponds or others. The hydrothermal heating resources are available in the U.S. and in almost every country worldwide. Geothermal heat pumps for heating and cooling homes and buildings in the US are being used in 45 countries. Geothermal energy is used for heating whole communities across California, Washington, Nevada, and other governments.

High Temperature: Producing Electricity

The energy can be generated when the temperature of a hydrothermal resource is around 220F and above. The majority of geothermal resources producing electricity have temperatures in 300 to 700F but can touch almost 1’000F of geothermal reservoirs.

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To generate electricity there are two main types of hydrothermal resources:

Reservoirs of dry steam (dominated vapor), hot water (dominated liquid).

Geothermal Energy Pros and Cons:

Here are the definitive pros and cons of geothermal heating:

Pros:

  • environmentally friendly. Compared to gas or oil stoves (no combustion).
  • Sustainable for all types of houses.
  • Earth’s geothermal energy is a renewable resource.
  • No fluctuations in gas and oil prices determined the cost.
  • Heating saving of 30% to 60% and cooling saving of 25% to 50%.
  • Not dependent on conditions such as solar or wind. Geothermal heat pumps function throughout the whole year.

Cons:

  • High costs for geothermal energy installation.
  • Heat pumps still require electricity.
  • power of geothermal hvac is Less than normal HVAC installers
  • Geothermal large-scale power plants are harmful to the atmosphere and center of the planet.

Geothermal Energy Production and Economics:

In many places worldwide, geothermal energy is used. Western and Hawaii are the most popular geothermal energy sources in the United States. Four states – California, Nevada, Utah, and Hawaii – are producing for most of the geothermal energy. In the United States, geothermal power plants have a total installed capacity today of 3,200 megawatts (MW). This equivalent energy is three nuclear power plants, Geothermal plants in the U.S. range from a few hundred kilowatts to over 130 megawatts.

Geothermal power stations can produce as cheap electricity as some conventional power stations. The electricity generated by hydrothermal systems costs 4.5 to seven cents per kWh. Compared to this, new coal-fired power stations produce around 4 cents per kWh of electricity. However, the cost of electricity generation over time is lower because of stable and predictable prices and availability of coal. Until recently, businesses were expected, irrespective of the environmental impact, to buy the least expensive electricity. Federal and government energy and environmental agencies examine how non-poisonous energy sources such as geothermal energy are to be recommended.

Reference:

https://www.nbcnews.com/mach/science/what-geothermal-energy-ncna963996

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