1. BY: INÉS HIGUERAS FERNÁNDEZ.
ANA RUIZ MONTEJO.
MARÍA VÁZQUEZ RODRÍGUEZ.

2. What is Geothermal energy?
• Geothermal energy is thermal energy
gerenated and store in the Earth.

3. Geothermal Energy on nature
• We can see some examples of geotermal
energy on:
• Geysers
• Thermal Sources
• Volcanoes

4. Uses of Geothermal energy.
• Electricity
• Heating water
• Agriculture and aquaculture
• Extraction of minerals
• Spas

5. Types of Geothermal deposits.
• The geothermal deposits can be clasificated
depending of their fluid’s temperature:
- High temperature deposits: Their fluids
temperature is between 150 & 400 ºC. They are
used to generate electricity.
- Medium temperature deposits: Their fluids
temperature is between 70 & 150 ºC. They are
used to generate electricity too.

6. - Low temperature deposits: Their fluids
temperature is between 50 & 70 ºC. They are
used only for thermal sources
- Very low temperature deposits: Their fluids
temperature is between 20 & 50 ºC. They are
used for home heating.

8. Types of geothermal power plants.
• Geothermal power plants can be
clasificated depending of how does they
take the vapour from the liquid:
- Conventional:

9. • Hot dry rock:

10. Geothermal power
plants in the world
Sonoma
Germany

11. Philipines
Iceland
Mexico

12. Advantages.
• It is a source that would avoid dependence on
foreign energy.
• It is an inexhaustible source of energy.
• The wastes it produces are minimal and
cause less environmental impact than those
originated from oil, coal...
• Geothermal resources are greater than the
resources of coal, oil…
• The emission of CO2, with
increased greenhouse effect, is less
than that would be issued for the same fuel
energy.

13. Disadvantages.
• Emission of hydrogen sulphide that is
detected by its rotten egg odor, but in large
amounts it doesn’t smelt and is lethal.
• It doesn’t produce a lot of energy.
• Large initial investiment.
• CO2 emission increase greenhouse gases.
• Contamination of nearby waters with
substances such as arsenic, ammonia, etc.
• Thermal pollution.
• Deterioration of the landscape.
• It cannot be transported.