Refer to the diagram shown below.
State 1: The inlet
T₁ = 80°F, the inlet temperature
v₁ = 1453 ft/s, the inlet velocity
Saturated vapor
From thermodynamic tables, obtain
h₁ = 113.94 Btu/lbm, the enthalpy
p₁ = 101.45 psia, the inlet pressure
State 2: The outlet
T₂ = 280 F, the outlet temperature
v₂ = 0, the outlet velocity
From thermodynamic tables, obtain
h₂ = 163.76 Btu/(lbm-R)
p₂ = 40 psia, the exit pressure
Answer: 40 psia
