When saturated steam is heated above boiling point, dry steam is created and all traces of moisture are erased. This is called superheated steam. Superheated steam has a lower density, so lowering the temperature does not revert it back to its original liquid state.

Does superheated steam have dryness fraction?

If this line is followed vertically downwards until 0.04 bar a is reached, the final condition of the steam can be evaluated. At this point the specific enthalpy is 1 890 kJ/kg, and the dryness fraction is 0.72 (see Figure 2.3. 9). The final condition can also be determined by using the superheated steam tables.

Is steam wet or dry?

Steam cleaners are the most common use of wet steam, which quickly condenses back to water. Dry steam, also known as saturated steam, is produced by heating water in a closed chamber. Dry steam is the gaseous form of water that is able to carry heat and can travel around obstacles and reach areas that wet steam cannot.