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Determine the isentropic flow through the nozzle:
In an isentropic flow through the nozzle, air flows at rate of 600Kg/hr. At inlet to the nozzle, the pressure is 2Mpa and temperature is 1270C. The exit pressure is 0.5Mpa. If the initial air velocity is 300m/sec. Determine the following
(i) Exit velocity of air, and
(ii) Inlet and exit area of nozzle.
Sol:
Rate of flow of air mf = 600Kg/hr
Pressure at inlet P1 = 2MPa
Temperature at inlet T1 = 127 + 273 = 400K
Pressure at exit P2 = 0.5MPa
Velocity at inlet V1 = 300m/sec
Let the velocity at exit = V2
And inlet and exit areas be A1 and A2
Applying SFEE between the section 1 - 1 & section 2 - 2
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