Several fluids' heat capacities have not been defined, which means they have a default value of 0, but are used in calculations within the mod. This causes issues like hot coolant not working in the heat exchanger (It doesn't produce any steam, and no hot coolant is converted into coolant. Mug coolant works fine, though) and RBMK boilers not decreasing their own temperatures when converting water into steam. Affects version X4214

Boilers are affected too? But those don't even use the heat capacity value and instead use a fixed number from one of the RBMK dials.

This line:

I'm reading through all of this again and nothing makes any sense whatsoever.

TileEntityRBMKHeater never actually references any fluids' heat capacity.

TileEntityRBMKBoiler does (but shouldn't), but only in one of the two required calculations and due to water not having a set heat capacity in theory it probably won't cool anything.

TileEntityHeatex seems to work perfectly, I guess?

COOLANT_HOT references STEAM's heat capacity instead of COOLANT's, resulting in it having none and not working in the heatex at all.

I don't remember binge drinking lately so idk what happened here.

Should be fixed now. I haven't double checked the current heat exchanger math so I'm leaving the issue open for now.

The current heat exchangers will be booted in favor of larger ones which use the much more consistent TU system, "fixing" the current tiny exchangers isn't necessary so I'm closing the issue.