Well Intruder from #firstname.lastname@example.org (EFnet) or #email@example.com (EFnet) sent us a source for a ps3 cooling kit.
Here is the ps3 liquid cooling kit from Koolance. It's due in later this year. There is no pricing information as of yet.
Koolance's complete cooling kit for the PlayStation 3 features the Exos-LT cooling system, CPU and GPU liquid blocks, AC power adapter, and special PS3 mounting hardware.
IMPORTANT NOTES: Modifying the PS3 for liquid cooling is not for the faint of heart. Although minimal changes are actually required for the PS3, it can be a labor-intensive task that should only be attempted by experienced individuals. Any manufacturer warranty on the PS3 is voided by installing or using this product.
Koolance does not provide any proprietary instructions for disassembling or modifying the PS3, nor for attaching the cooling components. Please see the "More Images" link above (once available) for the recommended product configuration. To maintain Koolance's product warranty on this kit, Koolance liquid coolant must be used. Koolance's product warranty does not extend to the PS3 hardware.
Exos-LT cooling unit (pumps/reservoir, radiator, fans, control board, LED display, etc.), Exos-LT user manual, Exos-LT AC power adapter, GPU/CPU cooling blocks, 1/4" (6mm) ID tubing and wrap, liquid coolant, hose clamps, mounting hardware, external nozzles, thermal paste
So here is external cooling system that will be included with the kit above, the Exos-LT. It's available for $169.99.
At just over 4 pounds (1.9kg), the Exos-LT is the lightest and most compact external cooling system by Koolance. Like all Exos systems, it will connect with any PC through a standard rear card slot. Available in black or silver anodized aluminum.
* 3 radiator fan speeds, including one automatic mode
* Automatic alarm and shutdown features
* 1/4" (6mm) tubing
* Top coolant fill plug
* Dual 80mm radiator fans
[Source: Sony PS3 Modding - Homebrew, Upgrades, Mods, and Hacks]