[jonrick46]

I wonder if there are any practical uses of this phenomenon?

[lefty-lie-spy]

No doubt something to do with discovering alien life or global warming.

[ProtectOurFreedom]

First thing I think of is engineered phase-change materials. It takes a LOT of heat to get a liquid to vaporiize from the liquid state. Think of drywall that maintains a nice, even 72 degrees throughout the day.

[Greetings_Puny_Humans]

I wonder if there are any practical uses of this phenomenon?

You get enough of these tubs with frozen water in them, and you can cool your drink and it will never melt.

[minnesota_bound]

#6 Not if you are in a sub and blow air to rise to the surface. The vent will freeze over and you will sink below crush depth like the USS Thresher (SSN-593)
https://en.wikipedia.org/wiki/USS_Thresher_(SSN-593)