|Quoting Oly720man (Reply 1):|
The environmental impact would probably be the construction of all the power lines to get the power from the geothermal plants to where the energy is needed.
|Quoting Pyrex (Reply 3):|
When you harness the heat of the earth for your own needs you basically have to release a lot of gases that should not be released
|Quoting Klaus (Reply 4):|
Not necessarily. When you're using heat exchangers no gases will be released to the surface. This will be a factor only in regions with high volcanic activity with large amounts of heated gases close to the surface.
|Quoting Mt99 (Reply 5):|
You are talking about 2 different things. Geothermal Heating - which, is just like you say a heat exchanger (same as heating water using the sun), and Geothermal Electricity.
|Quoting Jwenting (Reply 6):|
I wonder what the longterm consequences on the planet itself (not the atmosphere) would be from really large scale use.
You're extracting energy from the planet after all, that can only mean that either the planet (probably starting with the mantle) cools down or that energy is reabsorbed from somewhere else (which can only be the atmosphere).
|Quoting Mt99 (Reply 5):|
Geothermal Electricity is nothing but a steam plant. The Steam is produced by underground water heated by the earth which moves a turbine. When this steam cools it becomes water which contains sulphur and other kinds of not so great stuff. Some plants re-inyect this water back into the ground so it can be resused - at least some of it.
|Quoting Mt99 (Reply 10):|
|Quoting Newark777 (Reply 9):|
You would simply use the heat exchangers to heat the clean water on the surface, which would turn the turbines.
|Quoting Klaus (Reply 12):|
The same way it's done in any nuclear power plant: By generating steam in the heat exchanger which drives a turbine, is re-condensed and then re-used in a closed system.
|Quoting Mt99 (Reply 13):|
How would you build it? to have clean water out, it would not have to touch the ground. Meaning you would have to run the water through a pipe or something. How do you build a pipe at very very temperatures thousands of feet under ground?
|Quoting Jafa39 (Reply 11):|
Far better that all men have dynamos attached to their arses so that having sex produces energy which keeps the house powered....could change our lives forever Smile
|Quoting 777236ER (Reply 8):|
There's finite energy in the universe.
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