You know how that rubbing alcohol evaporates at room temperature (or somewhere around that) and that the evaporation lowers the temperature of the surface it's on? So what if you put some rubbing alcohol in a copper box that it won't leak out of, put a heatsink on the box, then put the heatsink on an intake fan for example? So the alcohol would evaporate, and the vapor would go to the top of the box. Then, since the box got cooled from the evaporation, the cold box would make the alcohol condense, the alcohol would go to the bottom of the box, then when the box got hot enough again, the process would be repeated. Would this process actually happen? Also would it cool the air coming into the case enough to make a difference? I know this is probably the craziest, worst, most insane idea you have ever heard, but so far I couldn't find anything wrong with the logic of this.