Complications 1-5 will be from ‘Applied Thermodynamics -- For Engineering Technologists' by Eastop TD & McConkey, page 325.
Calculate the throat and exit areas of a nozzle to increase air at a rate of 4. 5 kg/s from almost eight. 3 pub, 327 0C into a space at 1 ) 38 club. Neglect the inlet speed and assume isentropic flow. 3290 mm2; 4840 mm2
Problem a couple of
It is required to produce a stream of helium at the level of zero. 1 kg/s travelling in sonic velocity at a temperature of 150C. Believe isentropic circulation, negligible outlet velocity and a back pressure (= leave pressure) of just one. 013 club, calculate:
(i) the required outlet pressure and temperature;
(ii) The leave area of the nozzle.
Molar mass of helium is four kg/kmol, and = 1 . 66
2 . 077 pub; 1100C; 593 mm2
Recalculate the above supposing a pourcentage of relieve of 0. 96 and a nozzle efficiency of 0. 80. 3430 mm2; 5310 mm2
A convergent-divergent nozzle extends air in 6. fifth there�s 89 bar and 427 0C into a space at 1bar. The neck area of the nozzle is 650 mm2 as well as the exit area is 975 mm2. The exit velocity is found to be 680 m/s when the inlet velocity is minimal. Assuming that rubbing in the concourant portion is negligible, determine: (i)
The mass flow through the nozzle, stating whether or not the nozzle can be underexpanding or overexpanding; (ii)
The nozzle efficiency plus the coefficient of velocity.
zero. 684 kg/s; underexpanding, p2 = 1 ) 39 tavern; 0. 895, 0. 946
Problem a few
Steam goes in a convergent-divergent nozzle for 11 club, dry over loaded at a rate of 0. 75 ks/s, and expands
1 . one hundred thirty five
isentropically to 2 . several bar. Missing the outlet velocity, and assuming the expansion employs a legislation, =
the area of the nozzle throat;
the spot of the nozzle exit.
474 mm2; 646 mm2
Trouble 6 (Problem 9-117 from Thermodynamics -- An_Engineering Procedure Cengel & Boles) A turbojet aeroplanes is traveling by air with a speed of 320 m/s at an altitude of 9150 m, where the normal conditions are 32 kPa and 32°C. The...