Barrels of Steam
This mod adds steam barrels at 165 °C and 500 °C, as well as recipes for barreling and unbarreling.
There's also optional 15 °C recipes you can enable in the mod settings.
This all stems from a weird plan a friend and I had in our game to build a nuclear reactor on a remote island that we never set foot on, using only drones to send fuel rods across the sea and carry back superheated steam in barrels. Yes, it's a little silly, but you can put any fluid in a tank but not every fluid in a barrel, and we had just kind of expected this feature to already be there, and it wasn't probably due to temperature being relevant. Anyway, our next game plan is to create a base powered only by barrels of hot steam - no solar, no big pylons, no pipes, no tanks, plus more.
Recipes
Steam Barrel
Empty barrel + 50× Steam (≥ 165 °C) ⇌ Steam barrel (165 °C)
Unlocked by Fluid handling technology.
Superheated Steam Barrel
Empty barrel + 50× Steam (≥ 500 °C) ⇌ Superheated steam barrel (500 °C)
Unlocked by Nuclear power technology.