Quote:
Originally Posted by kennyc
I do know there is a lot of work in Iceland to tap into the thermal emissions (as they sit on the mid-Atlantic ridge and have a lot of hotsprings etc.) I know some research is going on ... maybe we need to fund more...
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I don't know if they are doing any additional work, but i know that Iceland gets ALL electrical energy it uses from geothermal sources combined with hydroelectrical power since a long time ago. I could personally verify that.
They also have all household heating requirements covered by geothermal energy.
i can think of three reasons for the core being hot
(1) heat from when the planet formed and accreted, which has not yet been lost;
(2) frictional heating, caused by denser core material sinking to the center of the planet; and
(3) heat from the decay of radioactive elements.