Answer to Question #279591 in Mechanical Engineering for Athena

Question

Steam at 3.5 MPa and with a 75.38C superheat rejects 1973.36 kJ per kg of steam heat at a

constant pressure, determine

a. Properties of steam at state 1

b. Properties of steam at state 2

c. Final Temperature

d. Change in specific entropy

Answer 1

P=3.5MPa

T=75.38°C=348.38K

1973.36 kJ/kg

From steam tables, at 3.5 MPa,$s_f=1.727$ kJ/kg

$h_f=584$ kJ/kg

$u_f=584$ kJ/kg

Final temperature = 75.38+138.9=217.28°C