Question

Air enters a nozzle at steady flow conditions. The air leaves the exit at 100 kPa and the outlet area is A2 = 16 cm? AIR P-300 Pa T - 200°C Y. -30 m/s A = 80 cm - 30 KP KPu Determine: ns a) the mass flowrate of the air BERT (6987) *173 m. 8 mrem 1-23302 ma IVA (22) (30)69- Sovever .528 km b) the rate of kinetic energy entering the system My in Cantimpat) +, Wa dimua 16528 Y 20) (2336 c) find the exit velocity vz 5 in ( vi) V. A = J VZA d) what is the exit temperature T2? PV - Pa Va

Answer 1

Ri=Books P2 = 100kps T122.00°c Vi - 30m) A1=800m2 Az=l6em² : P = PRT ideal gas.equatry. - R=-287 for air : : Roligie = 2021 kg/m3 mais flow Rate= pavi L S 2:21% 80x107x30 = im 2.5303 Kgls @ 0 1 mx 1,2 = 44.5303x (30) 2= 238.67 Ils. © by mais. conservation min mout PAIN = P2 AL De V₂ «5303 = P2 xloxio 4xV2 RT2 vs 19512 - 0

2000 from. Energy com servatity . Ein = E out . CPT, + 1,2 = 4pxTy + vez 1.00sx 4737 136)? = Mooste ) + w doo 4.75.815 = 1.056.V2 + .5X163 v2 ? TV2 = 381.62m/s) © 172 = 401-198 K. Jor 128.19 °C 0 .1.98 K.
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