Wait a moment. The magma is hot becasue it is pressurised. When you pick it up to earth it will expand and cool.
Do some calculation on it and see how much heat is left. There is no difference if you pump a fluid down to the magma. It will get pressurized as it go down and will heat up because of that. It will coll when rising. That there is an energy source to keep the heat in the interior is not well proven. It could just be a pressure effect. In fluids this heat gradient is well known but almost entirely ignored for solids. David David Jonsson, Sweden, phone callto:+46703000370 On Tue, Jun 16, 2009 at 5:10 PM, Alexander Hollins < [email protected]> wrote: > > http://gizmodo.com/5291538/romulan-planet-drill-now-in-testing-stages-for-real > > Now, I've got a question. If we drill down to magma, and use that > heat for power generation... aren't all powerplants just heat pumps? > we generate the power while letting heat flow naturally down the line > to colder climes. which would be..... the crust,the ground, the air? > wouldn't that cause a global warming if done on a large scale as > well? > >
