ENERGY FROM ENERGY FROM VOLCANOESVOLCANOES
Christine P. TulangTeacher I
Sampaguita Village NHS (Southville Ext.)
Targets for Today:Targets for Today:
• Define geothermal energy.• Give the different forms of geothermal
energy.• Discuss how geothermal power plants
work.
What is Geothermal Energy?What is Geothermal Energy?• It is the heat coming from the depths of the
Earth. It is believed that the heat is due to radioactive elements from the core.
• A source of energy that is limitless and is considered a very good alternative energy resource.
GEOTHERMAL TRIVIAS!GEOTHERMAL TRIVIAS!• Philippines was declared as the second second
largest producer of electricity from largest producer of electricity from geothermal resources.geothermal resources.
• Renewable Energy Act of 2008Renewable Energy Act of 2008(RA 9513)(RA 9513)An implemented law that supports the exploration and use of geothermal energy resources in our country.
How is geothermal energy How is geothermal energy harnessed?harnessed?
• A geothermal reservoir may produce may produce steam only, boiling water and steam or hot water not reaching boiling point. A pipe is drilled into the Earth about 3 km deep to get the resource reservoir.
How is geothermal energy How is geothermal energy harnessed?harnessed?
TYPES TYPES OF OF
GEOTHERMAL GEOTHERMAL POWER PLANTSPOWER PLANTS
DRY STEAM PLANTDRY STEAM PLANT• Make use of steam having temperatures of
235 C or higher.⁰• This source has very little water and is
almost all steam.
DRY STEAM PLANTDRY STEAM PLANT
FLASH STEAM PLANTFLASH STEAM PLANT• Make use of high pressure hot water to
produce steam.• High pressure hot water is brought to the
surface in a steam separator chamber.
FLASH STEAM PLANTFLASH STEAM PLANT
BINARY CYCLE PLANTBINARY CYCLE PLANT• Makes use of hot water with temperatures
from 57 C to 93 C.⁰ ⁰
FLASH/ BINARY COMBINED FLASH/ BINARY COMBINED CYCLE PLANTCYCLE PLANT
• This is done in geothermal reservoirs which yield both steam and hot water.
FLASH/ BINARY COMBINED FLASH/ BINARY COMBINED CYCLE PLANTCYCLE PLANT
