Answer to Question #291873 in Mechanical Engineering for Sam

Question

Dry air at a temperature of 270 C and pressure of 20 bars enters a nozzle and leaves at a pressure of 4 bar. Find the mass of air discharged, if the area of the nozzle is 200mm2.

Answer 1

T₁=270°C

P₁=20bar

P₂=4bar

A=200mm²

At P1 and T1

h=345kg/kJ

s=1.274kJ/kgK

m=hs

=345*1.274

=439.53kg/s