Refrigerant-134a enters an adiabatic turbine steadily at 40°C and 0.9 MPa, and leaves at 140 kPa. The highest possible percentage of mass of R134a that condenses at the turbine exit and leaves the turbine as a liquid is
A)2%
B)2%.
C)8%
D)12%
E)18%

Question

Quizplus · Accepted Answer

Solved by EES Software. Solutions can be verified by copying-and-pasting the following lines on a blank EES screen. 
P1=900 "kPa"
T1=40 "C"
P2=140 "kPa"
s2=s1
s1=ENTROPY(R134a,T=T1,P=P1)
x2=QUALITY(R134a,s=s2,P=P2)
misture=1-x2

Refrigerant-134a Enters an Adiabatic Turbine Steadily at 40°C and 0