Just watched a program on National Geographic channel about Geothermal Power generation and at no point did they mention the effect that it would have on cooling the earths core.
Now, I’m no geologist, and I’m sure that there have been scientists that have looked into these effects and detirmined that the amount of cooling that Geothermal Power Generation would cool the core would be so small as to be one one millionth of a percent of the temp. My concern is that the earths mantal has no means of re-generating any temp loss, and that it’s been theorised that the earths mantal is cooling each year and that if it cools below a certain point the earths magnetic field could disapear.
So yeah, my concerns may be unfounded as I don’t have all of the facts and figures, but there are still some facts that lead me to be slightly concerned given that this program was trying to sell Geothermal power as the best green solution for Power generation. One thing I do need to explain is that there are two types of Geotermal power, the type that comes to the surface naturally, and the type they drill for. My concern is for the type they drill for which is artificially allowing steam to escape and taking heat out of the mantal. Facts below.
- Allowing pressurised steam to escape into the atmosphere removes heat from where it was previously trapped.
- The earth is basically cooling since it’s creation, and does really have a way to generate it’s own heat from what I remember (Thopugh I may be wrong here)
- Scientists believe the earths magnetic feild is created by the molten core moving around, and that if the core freezes the magnetic field may disapate.
Now sure… like I said… I don’t have all the fact, but my concern is that none of these factors were mentioned, and it was spouted as the end of fossil fuels if they can work out how to do it on a large scale, in area’s that it is currently not possible to do. In otherwords, they are talking about opening the area that these potential core cooling plants can operate in from 10% of the worlds surface to almost 50%. Anyway… In theory I like the technology, but would need to see that these factors have been thought about.

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