There is a mechanic that allows small amounts (~5kg) of resource to instantly change phase if next to a tile above/below this tile's phase change points.
For example, ice next to warm air will sometimes "bleed" 5kg puddles, large block of water will "burp" steam if next to a 150C tile (even if the water itself is cold), dirt may drop small blocks of sand. @Kabrute said it also affects liquid O2 next to abyssalite tiles, suggesting it ignores heat conductivity.
Did anyone do science on this thing? Maybe there is a whole thread documenting this, it's just that it's hard to search for something hard to describe with one word.
The only practical applications of this thing I see would look like this:
Build abyssalite tank
Run tungsten pipes through abyssalite tiles (non-door-building/tile interactions use some weird temperature exchange calculations, bypassing usual tile/tile rates)
Run very hot liquid through pipes
Put pH2O or crude oil into the tank
Watch as it very slowly, but very heat-efficiently (no direct heat transfer, only phase change transfer) converts to water or natgas