Source of electricity
Geothermal energy
Powerplants are built in an area where it is particularly hot, near where
Group of geysers, hot springs or volcanic activity
Oldest geothermal technology
Dry steam
Takes steam out of fractures in ground n directly drive turbine
Dry Steam
Pull deep high pressure hot water into cooler low presssure water
Flash plants/Flash steam power plant
Hot water is passed by a sec.fluid with much lower boiling point than water
Binary cycle power plant/Binary plants
Binary cycle, the secondary fluid will what? Then drive a what?
Turn to vapor, drives a turbine
Arrange these in order:
-Heat causes the water to turn into steam
-Generator changes the mechanical to electrical energy
-Steam causes the turbine to turn
-Heat from inside the earth
- Heat from inside the earth
- Heat causes the water to turn into steam
- Steam causes turbine to turn
- Generator changes the mechanical to electrical energy
What happens once the geothermal fluid has been used?
Cooled, condensed, reinjected
Geothermal energy is sustainable meaning
It will not be used up
Main disadvantage of building geothermal energy plants
Cost
Piping steam from earth directly to turbine
Dry steam power plants
Potential environmental issue can occur in building a geothermal energy plant
Toxic gasses can be released while drilling
