Hi, I tried your save, both with and without this mod, and in both cases supercritical steam and pressurised steam unbarrel at 15 °C.
So I don't think it's anything to do with this mod. I checked for name conflicts but couldn't see anything.
I think Pyanodons (or whichever mod the supercritical/pressurised steam unbarrelling recipes are coming from) just forgot to specify the output temperature when unbarreling. Or they intentionally specified 15 °C.
I tried looking in the source of the other mods to confirm this, but I couldn't actually find the recipes.
Weirdly, in-game it doesn't show which mod those recipes come from. It just lists "Base mod > Barrel Size" as the source, which doesn't make much sense.
The game thinks those recipes are part of the base game.
I wonder if there's something in the base game that automatically generates barrelling and unbarrelling recipes when new fluid types are defined.
It would make a lot of sense. When I was originally making this mod, I planned to clone the water barreling recipes and make changes so that they would use steam instead, but I found that those recipes were nil on startup in data.lua, so I had to write the recipes from scratch.
In that case, the base game probably doesn't consider temperature at all when creating these recipes.
I guess you could try contacting Pyanodon and see if they know anything about those recipes.
They probably have to update these recipes to have temperature requirements for barrelling and temperatures for unbarrelling, or add recipes of their own.