Define i)Dryness fraction ii) Degree of superheat

Define i)Dryness fraction ii) Degree of superheat
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1 Answer

Answer :

i)Dryness fraction: Dryness fraction is defined ratio of the mass of the dry steam present in the total mass of steam.

 Or

 Dryness fraction is ratio of the mass of actual dry steam to the mass of wet steam.

 Therefore, x = ms/ ms + mw

 Where ms and mw are the masses of steam and water in the mixture of (ms + mw).

ii) Degree of superheat: It i difference between the temperature of Superheated Steam and the saturation temperature correspondingly to given pressure is said to be Degree of Superheat. 
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