ive been waiting for things like this to come out, there are a few companies that do something like this. basically its set up exactly like a water-cooled computer. water runs across a metal surface that transfers heat, take the heat back to the reservoir to cool down while new stuff comes in, and so on and so forth.
But there are always draw backs - water leakage with high watt lights = not good. you have to change the res every once in awhile, along with cleaning the tubes. also, unlike a computer processor, lights give off alot of radiant energy around the bulb, as opposed to computer chips which have a very specific point of heat exchange (sometimes only a few cm squared).
What we reall need is a relfective light shade that has cooled water that runs through the whole thing. then use a CoolTube-like device to have light air exhaust to take out surrounding hot air.
So this would probably work to take SOME of the heat off, but you cant really replace your whole air heat exhaust system with it. Would i buy it? Yeah maybe if I had an extra $150 laying around and I felt like experimenting with it. but i dont, and i think i can cool just fine with a CoolTube.
*edit* after looking further, this looks like it cools the air AS it exhausts from your reflector. So this may actually be a good alternative when put on a CoolTube or other air-tight relfector device. Now if only we can see it in action..... :-D
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