Question

what happens if water is heated at the supercritical pressure (> 221.2 bar)

Answer 1

Above the critical temperature and critical pressure the water will become just vapor.

       Below the critical temperature but above the critical pressure the fluid remains entirely liquid.

Answer 2

Answer:

When water is heated at critical temperature at 221.2 bar, it gets converted to steam directly without the intermediate stage of evaporation. When we heat the water, it keeps getting heated and when it reaches the critical temperature, it gets converted to steam immediately.

At critical temperature and pressure, the latent heat becomes zero. In boiler, at the supercritical pressure, when the temperature is below critical, it will be water and above critical it 100% steam. There will be no mixture of water and steam as seen in normal boilers.