In my ongoing quest for higher efficiencies out of my reactors, I wanted to build a EA* Plutonium reactor. This was a challenge, as it required a quad plutonium cell, surrounded by neutron reflectors, which produces an immense amount of heat. After several tries, and some melted components, I met with success.
I am using a modified FTB Unleashed modpack, including IC2 1.116.364 and gregtech. For whatever reason, my plutonium cells produce exactly twice the heat of uranium cells, contrary to what the reactor planner predicts, so bear with my plans saying they overheat. I have run this reactor design for over 72 hours of realtime operation without a problem.
This is the reactor design
The 25 Overclocked Heat Vents barely take out the 896 heat/t, with 4 heat to spare. However, they can only dissipate 500 of said heat. Another 32 heat/t goes into the pair of Component Heat Vents. This still leaves a considerable 364 heat/t that gets funneled into the Coolant cells by the Component Heat Exchangers. From here I've used Applied Energistics to automatically remove the coolant cells when they fall below 50% durability, at which point they are placed into a cooling tower from this thread:
Does This work? (Various Cooling Tower designs)
Which has an overall cooling capacity of 480 heat/t, more than sufficient for our needs.