That's pretty much exactly what I was thinking. :3_pimatyoOff the top of my head I’m sure that you could do such a thing, but it goes without saying that custom work would be a necessity. To my way of thinking you would want to go with an aluminum replacement of the drink holder to transfer the heat/cold the most efficiently. Personally if I were to do such a thing I would look at hooking some form of heating element (shouldn’t be too hard to come by) to the sides of the holder, and hooking a Peltier cooling unit (try grabbing one from the CPU cooling section in Newegg.com) to the bottom with a three-way toggle switch to choose between heat/off/cool. Again, lots of custom work, but you could probably do it.
After checking out Newegg I confirmed my belief that in fact the Peltier cooling units for PCs in fact have exhaust fans that would wick heat away from anything that might become damaged by exposure to the heat. Though in truth I have to wonder if the plastic surround (again, having replaced the actual cup holder with aluminum for efficient heat transfer) would really be heated up by the presence of the Peltier unit any more than it would be on a normal summer day. Of course, my examination of the unit that I had previously noted (This rather nifty piece of technology right here )presents two far more immediate problems with my thought of using one to provide drink cooling.only thing about peltier would be that the way it works is,
it's a plate of which one side becomes VERY cold but the other side becomes VERY hot, so i'm just wondering if the hot side would be able to melt the cup holder itself,
in computers when you use peltier, you still need very good cooling on top of the peltier plate to avoid getting heat throughout the rest of the case