Once you do that, you can then run a thermal generator on the resulting temperature differential, to generate even more energy, and now you've created a perpetual motion machine, oops.
(without an existing cool place to dump heat, you can't generate energy, otherwise you could just extract heat from everything everywhere and cool it all down to absolute zero, solving both the energy problem and global warming with a single stroke)
(without an existing cool place to dump heat, you can't generate energy, otherwise you could just extract heat from everything everywhere and cool it all down to absolute zero, solving both the energy problem and global warming with a single stroke)