Great food for thought.

In the Navy I learned about boilers, the pieces of engineering equipment that are used in propulsion and electrical generation. Steam that is just at the boiling point ends up being too wet to use, and easily turns back into condensate (water) which then causes corrosion on the moving parts. TO more efficiently use steam for propulsion steam is ‘superheated to a point where all the water molecules are in the vapor phase, which drastically lowers the amount of condensate in the moving parts of the steam engine.

Another point, steam goes through a cycle from liquid to vapor continuously through the systems that make up a steam engine. The liquid form is always hot, but for half of the cycle, the water molecule is in liquid form and half the cycle is in a vapor form.

Think of it as a work phase and a rest phase. It’s impossible for a steam engine to work with only vapor, the water must be given time to revert to a liquid form then be re-heated (or re-superheated) to the vapor form.

Peace.

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