This is just a "what if" idea, I am coming back to a concept I did some research on last year, thinking about trying to build a liquid cooling system for one of my 450Ds. The idea is to get the heatsink/fan weight off the camera and have the radiator heatsink/fan mounted on the pier. I would put a 40x40mm (TEC sized) waterblock on the camera cold finger hot side and just run two flexible plastic tubes away to the pier mounted pump and radiator/fan unit. I have been looking for efficient 40x40 water blocks, and most seem bigger than that but the standard AMD ones could work, and there are many simple (and cheap) Chinese ones made out of copper and aluminium. I would like to keep the weight down so am leaning towards one of the ones with a copper bottom (TEC side) and aluminium top section (copper is better at absorbing heat from a source), obviously sealing and gaskets become an issue. Not sure how much pressure these things run.
Anyone have any PC experience with these cooling systems? I would be concerned about hose flexibility as they have to move with the mount, and how long they can be for any given pump used, etc.
I know from my research that QSI offer a recirclating pump and a water block that attaches to some of their cameras, suppose to offer an additional -10C off the delta T of the normal camera TEC cooling. I am not looking for deeper cooling just to move the load off the camera, so if QSI has made it work on a CCD camera I am thinking it is do-able.