if water is heated at the supercritical pressure(<221.2)
Answers
If water is heated at supercritical pressure, it turns into a state where it is neither liquid nor gaseous. It becomes a supercritical fluid. This is a state where there is no clear distinction between liquid and gaseous state. In this state, it can go through some solids like gas and dissolve some materials like liquid.
Supercritical Steam Generators are boilers which operate at supercritical pressure. They are most commonly used in the generation of electricity. Such generators operate at pressures above the critical pressure.
Q. If water is heated at the super-critical pressure (221.2 bar) then what happened?
Answer :
At this point there is no change of state take place because when water is heated at this pressure (or reaches at this critical point) the phase immediately turns into steam without the intermediate stage of evaporation (changing the density working fluid). At this critical pressure, Its unclear to distinguish between the water phase and steam phase.
Therefore, we can say, when water is heated at super-critical pressure that is 221.2 bar, it immediately turns into steam without the intermediate stage of evaporation.