OK so i've built a nuclear reactor, 6 chambers, air surrounded. (See Attachment for inside Alignment)
After what i understood after reading the Tutorial: the 4 Edge Uraniums should do 3 pulses and generate 4h/pulse (2 adjectant plates) thus 12h / edge (48 h/sec all edges) and the Center ones 4 pulses, emitting 10 heat/pulse thus 40/center (80 h /sec) all together: 128 h/sec. So much to the heat generation.
Now to the Cooling: i've got 6 chambers and 1 reactor (2h / chamber and 1h from reactor => 13h/sec
The outward cooling should be: 21 air blocks /chamber and 20 air blocks for the reactor (assuming it works like watermills water calculation and they share blocks) = 146 air blocks (-3 blocks for cable and redstone) = 143 Air / 4 = 35.75 h/sec
On the Inside we have: 24 Coolant Cells, 12 Heat dispersers and 6 reactor plating. -24h/pulse from coolant, -0.6 from the platings. (I got no idea if heat dispersers do cool themself and how fast they do, thus i leave them out for now).
Full Calculation: 128 - 13 - 35.75 - 24.6 = 54.65 h/puls not dealt with.
Distributed on all cooling cells this means: 54.65/(24+12) ~ 1.5... Which would mean, each HD and Coolant should cumulate 1.5 heat/pulse and should therefore decrease faster than the Uranium. But they dont go down.... not a bit.
What did i calculate wrong?
(The Ice in the Screenshot is just to show no heat has been generated, normally empty.)