Voici comment cela fonctionne:
* Heat source: The Earth's interior is very hot, with temperatures reaching over 5,000°C (9,000°F) at the core.
* Hot water/steam: This heat warms underground water and rocks, creating steam or hot water.
* Extraction: Wells are drilled to access this steam or hot water.
* Génération de puissance: The steam is used to drive turbines, which in turn generate electricity.
Types of Geothermal Energy:
* vapeur sèche: This is the most straightforward method, where steam is directly used to drive turbines.
* Steam Flash: Hot water is pumped to the surface, where it flashes into steam due to the lower pressure.
* Cycle binaire: A heat exchanger is used to transfer heat from hot water to a working fluid with a lower boiling point, creating steam to drive the turbine.
Avantages de l'énergie géothermique:
* renouvelable: It's a sustainable source of energy, as the Earth's internal heat is constantly replenished.
* propre: It produces very little greenhouse gas emissions, making it a climate-friendly option.
* fiable: Les centrales géothermiques peuvent fonctionner 24/7, quelles que soient les conditions météorologiques.
* Power BasEload: It provides a stable source of electricity, unlike solar or wind power, which are intermittent.
Overall, geothermal energy is a promising renewable energy source with the potential to significantly contribute to global energy needs.
