Answer to Question #136165 in Mechanical Engineering for dilan

Question #136165
A vessel with a volume of 0.03 m3 contains saturated vapor at a pressure of 17 bar. Determine the mass of the vapor and having found the mass value, determine the enthalpy value
? and also explain why X (quality) = 1
1
Expert's answer
2020-10-01T10:16:18-0400

As per the given data:

Volume of saturated steam (V)=0.03 m3.

At pressure (P)=17 bar=1.7 MPa

From steam table,

The specific volume (Vg)=0.11667 m3/kg.

The specific Entalpy (hg)=2794.5kJ/kg

Therefore,

Mass of steam(M)=

Therefore , Enthalpy (H)=m hg=0.257x2794.5 kJ=718.75 KJ

Since steam is saturated, it doesn't contain any liquid phase, therefore it's dryness is 100% and it's quality (x)=1.


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