Geothermal Energy What is Geothermal Energy Geothermal energy

Geothermal Energy

What is Geothermal Energy? Geothermal energy is heat energy generated and stored in the earth. Steam rising from the nesjavellir geothermal power station in Iceland.

Advantages of Geothermal Energy There are many advantages to Geothermal Energy is renewable energy because once water or steam is used, it can be pumped back into the ground. It is also clean energy. Geothermal power plants, unlike plants that burn fossil fuels, do not produce greenhouse gases that can be harmful to the atmosphere.

Disadvantages of Geothermal Energy The cost of drilling wells to the geothermal reservoir is very expensive. Underneath the earth’s surface, there is a substantial amount of greenhouse gasses. Harnessing of the heat can potentially lead to the migration of these gasses to the surface of the earth and pollute the air.

Disadvantages of Geothermal Energy (cont. . . ) These kind of emissions are prevalent and higher where geothermal energy power plants are situated and are linked to silica and sulfur dioxide emissions. To add to that, the reservoir may contain toxic heavy metals such as arsenic, boron, and mercury.

What is Thermal Energy? Thermal energy is the energy that determines the temperature of matter.

Advantages of Thermal Energy Thermal energy can be used almost directly like in power generation (steam: coal, nuclear etc. ), cooking food, drying agricultural and other products, dyeing, curing of timber and other industrial products. Major advantage of using thermal energy is that it can be used easily without caring much about efficiency (though efficiency is important for power plants, for most general uses it is irrelevant).

Advantages of Thermal Energy (cont. . . ) Thermal energy is readily available from sun as radiation, fuels (conventional like coal, petroleum as well as non-conventional like nuclear), thermal geysers, heaters etc.

Thermal Energy

Some information on Geothermal Energy The geothermal energy of the Earth's crust originates from the original formation of the planet and from radioactive decay of materials (in currently uncertain but possibly roughly equal proportions). The geothermal gradient, which is the difference in temperature between the core of the planet and its surface, drives a continuous conduction of thermal energy in the form of heat from the core to the surface.

Some information on geothermal energy (cont. . . ) The adjective geothermal originates from the Greek roots γη (ge), meaning earth, and θερμος (thermos), meaning hot.

Some information on Earth`s Energy Earth`s internal heat is thermal energy generated from radioactive decay and continual heat loss from Earth's formation. Temperatures at the core–mantle boundary may reach over 4000 °C (7, 200 °F). The high temperature and pressure in Earth's interior cause some rock to melt and solid mantle to behave plastically, resulting in portions of the mantle convecting upward since it is lighter than the surrounding rock.

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