The Fool said: > You'r not creating more energy than is already been used, your > recycling a small portion of it.
Thus your scheme doesn't violate the first law of thermodynamics (the conservation of energy). The second law, in one of its forms, says that you can't move heat from a cold object to a hot object without putting energy into the system (in a more quotable form, it says "the entropy of a closed system never decreases"). This is the reason that refrigerators consume energy. (In your example of a CPU, you're moving heat from the hot CPU to the cold surroundings. You could do this with a passive heatsink if the CPU power was low enough, but most use fans simply to carry heat away more effectively.) It's probably worth learning some thermodynamics. It's interesting stuff. Rich, who hasn't really thought about it properly for five or six years and who ought to refresh his memory of the details soon.
