I think everyone's hoping you'll do fluid cooling for steam reactors Its a staple of fission for Big Reactors (optional), IC2 (optional), ReactorCraft (required), etc.I think my original reason for this was because, unlike big/extreme reactors, there is not an axial symmetry to reactor designs in general, making fluids rather tricky to use. You can, however, actively cool fission reactors using the Active Fluid Cooler, and pump various fluids into it. It does use up the fluid that gets given to it, so although it is far more effective, it can be very expensive.
...Perhaps to shake things up a bit, maybe I'll consider fluid cooling for the steam reactors.
You don't even really need to make proprietary "hot" versions of fluids from other mods if that's annoying.
If you prefer adding blocks, it could be something like...
- Cryotheum goes into Reactor
- Reactor produces NC-Hot Coolant and cryotheum dust
- NC-Hot Coolant goes into Turbine (or Heat exchanger, turbodiesel's preference)
- Turbine produces power and NC-Cold Coolant
- Cold Coolant and Cryotheum dust craft into Cryotheum
- Cycle complete (closed loop)
Reactors would need to be able to output a different itemstack (cryotheum dust when cryotheum consumed, etc)
A machine (compressor or something) would be able accept a fluidstack and itemstack and convert it back to the original cold coolant.
You'd lose the interesting gimmick of designing the cooling systems though, or have a weird overlap if you wanted to do both the blocks and the fluid cooling.