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Transcript of Geothermal energy
Geothermal energy is a
energy obtained from the earth's interior. Then it is used as hot water or transformed into electricity and many other things.
Geothermal energy in Spain
Extraction and uses.
Advantages and disadvantages.
Geothermal energy needs the thermal energy in the Earth´s interior (heat) which is a renewable source obtained from volcanoes, geysers, ...
Advantages and disadvantages
It is a renewable source.
Extraction and uses
The Earth releases it's internal heat through volcanoes and oceanic ridges.
To transform this internal heat into light for our homes we need some basic elements.
We already have our heat source, now we need an aquifer, water and a seal.
It is a hot rock that lets water pass through it.
Natural underground sources.
It maintains hot water caught up.
Extraction and uses
Collects this hot water and then is used as heat at homes, in aquaculture, ... as well as electric energy thanks to turbines.
So now you know how this type of heat is transformed...
into this type of heat.
There are two basic types of uses:
It is cheap.
It does not pollute.
It creates jobs and economic benefits.
It reduces the dependence of fossil fuels.
It isn´t a widespread source of energy.
It has high installation costs.
Geothermal sites can run out of steam over a period of time due to drop in temperature.
May release harmful gases.
It cannot be easily transported .