saturation T and P of steam?

Question

am not really gr8 at this topic.so pls bear with me.
frm wat i could gather,
*if atm P increases,boiling pt increases.
*the max temperature of steam at a particular atm P is the critical temp.at the corresponding P is the critical P .
*now,if T is kept constant,and P is increased,what will happen???
*if P is kept constant and T is increased, what will happen??
will we get super heated steam?
pls reason your answer.
TY

Answer 1

if T is kept constant,and P is increased, steam will start condensing

if P is kept constant and T is increased, superheated steam.

Answer 2

The critical point is one of those weird places which people try to shy away from. At this point, at least in a thermodynamic sense, there is no difference between liquid water and steam. It is the end of the range of boiling points at different pressures. Apparently, the steam comes so compressed that it acts like a liquid, and the liquid so heated and expanded, that it density decreases almost to the steam density. One would expect that you would have a liquid-gas combination at a temperature above the critical temperature, at a pressure equal to or above the critical pressure. Superheated steam is steam that has been formed at a temperature and pressure above a certian T-P condition and suddenly reverts to the lower pressure and temperature.