Under a certain pressure, so that the water inside the steam boiler continues to heat, so that the water temperature rises one after another, and ultimately reach the saturation temperature (also known as the boiling point or the vaporization temperature), this has a saturation temperature of the water is called saturated water. Steam boiler to maintain pressure under the same conditions, the saturated water to continue to heat, at this time the saturation temperature is constant, but saturated water is converted to water vapor one after another, this has a saturation temperature of water vapor is called saturated steam. Still keep the pressure unchanged, the saturated steam continues to heat, can then increase the temperature of saturated steam, so that it becomes superheated steam.
As saturated steam has a pressure and saturation temperature corresponds to the characteristics of that with the rise in steam pressure, saturated steam temperature rises accordingly, the specific boiler pressure and temperature comparison table is as follows.
