How Geothermal Energy Works
HowStuffWorks can tell you how geothermal energy works. There are three ways to tap that they explain:
Direct geothermal energy
Geothermal heat pump
Geothermal power plant
And within the geothermal power plant there are three kinds:
Dry steam
Flash steam
Binary cycle
HowStuffWorks also compares geothermal energy to other energy types
Direct geothermal energy
Geothermal heat pump
Geothermal power plant
And within the geothermal power plant there are three kinds:
Dry steam
Flash steam
Binary cycle
HowStuffWorks also compares geothermal energy to other energy types
The Energy Story - Chapter 11
Chapter 11 of The Energy Story explains geothermal energy. They give a lot of information on hot springs and their uses outside of energy, like how the Japanese have been using them as hot baths for centuries! There is also a fantastic comparison of the earth to an egg that may help you visualize geothermal energy sources.