Funny you should say that because i was researching mineral oil for cooling i was thinking a large custom built glass tank with the led chips siliconed to the bottom face down so the light passes through the glass i wouldn't think the glass would restrict to much light but it would probably be pretty impractical just thinking of all ways to cool the set up.More like copper pipe which has water running through it. Cheapest would be dumping them in a vat of oil, but they would make much light that way would they.
On a more serious note, 2kW is a vast amount of power, you will need a huge aluminium heatsink. Do you mind using fans to help with the cooling, or is noise a problem?
How big are the modules and how closely do you need to space them? Do you have a datasheet?
No more info on them? That will be quite hard to design properly, you need at least some thermal data on them to pull this off. At least junction to case thermal resistance and maximum junction temperature, or something along those lines. How big is each module? You might try finding something similar that has a datasheet and going from there.The information i have on the leds i was planning to use is 100w chips cool white - input voltage DC 32-36V - Current IF 3500MA - lumen 6,000 - 7,000.
This is the same leds i was planning to use is this much more help?No more info on them? That will be quite hard to design properly, you need at least some thermal data on them to pull this off. At least junction to case thermal resistance and maximum junction temperature, or something along those lines. How big is each module? You might try finding something similar that has a datasheet and going from there.
Also note that from what you describe these modules are just a string of leds attached to a metal pcb, so each will need some form of current regulation, preferably a switching controller with that amount of current.
Sure.. Some more details from the OP would be nice too.. Now its just 99% speculation..Meh. Even if this project never gets built, discussing it is very educational.