Geothermal energy is a source of electricity that seems to be gaining popularity. In this presentation, one can learn the general details of geothermal energy, the process and different types of geothermal power plants. Hope you learn!

1. Geothermal energy

2. Introduction
Geothermal energy is a new innovation in the field of energy.This is an
unconventional source of energy and is believed to be renewable.
Geothermal energy uses the heat of the earth’s core and converts it
into electricity. In this presentation, we study about hydrothermal
fluids, its utilisation through geothermal powerplants and the working
of geothermal powerplants.

3. Hydrothermal fluids
Over millions of years, rainwater seeps through cracks in the crust.Due
to the core’s and mantle’s heating, this rainwater gets heated up and
reaches high temperatures. This fluid doesn’t turn into a gas as there is
an enormous amount of pressure underneath the earth’s crust.
The fluid trapped inside that can be used in a geothermal powerplant is
called a geothermal reservoir.

4. Geothermal powerplants
Geothermal powerplants are places
which successfully produce electricity
using geothermal fluids.The
hydrothermal fluid reaches the surface
through wells dug upto 5000 feet under
the earth’s surface called Production
wells. The hydrothermal fluid naturally
flows through the production wells
because of pressure. There are 3 types
of geothermal powerplants-1.Dry steam
2.Flash 3. Binary powerplants.
All powerplants inject the fluid back to
the reservoir for reuse.

5. Dry steam powerplants
In such a type of geothermal powerplant, steam
is direclty usedto spin the turbine. In this case,
steam is directly obtained from the production
wells

6. Flash powerplants
In such powerplants, the
geothermal fluid is converted to
steam to run the turbine. This
process is called ‘flashing’.

7. Binary powerplants
This type of powerplant uses the
geothermal fluid to heat up
another liquid which has a lower
boiling point than water.

8. Pros and cons
Pros
• Renewable
• Non-polluting
Cons
• Costly to set up.
• Wells are dug deep causing
disturbances in the plates of the
crust.

9. Conclusions
As we have seen in the previous section, geothermal energy is
renewable and harmless to the environment. Though we have
drawbacks, it has proved best among all the sources of energy.

10. Conclusions
As we have seen in the previous section, geothermal energy is
renewable and harmless to the environment. Though we have
drawbacks, it has proved best among all the sources of energy.