ok, this is the result of an test (to understand heat dispensers)
an mk II reactor which can run 28 cycles until it reaches an critical heat value of 8500 (heat: +301 per cycle)
http://test.vendaria.net/index…UCHCCHCXCUUCXCHCCHCXCXXCX
not very good, but it works 
You use 6 uranium to make 50 eu/tick bit of a waste even mk1 can have better eff.
Yeah, inefficient layout
Edit: rule of thumb it to try and fill out all place in the reactor. If you don't need space, use less chambers 
This reactor is also inefficient for component heating since, IIRC, the heat distributors can only move 5 thermal/reactor step. It's a SUC design.
Nevermind that; I forgot to account for the (rare) case of a cell being surrounded by three cooling components only outputting 6 thermal/tick (and no additional pulses due to neighboring reactions).
