Question

2 bann 27. Determine the minimum temperature before of the turbine for the turbojet engine using the following parameters: e=2, Compression efficiency and Expansion efficiency equal to 0.9, the temperature at the engine inlet is 288K. 620K 0417.85K 580.4K 28. Determine the maximum pressure 26ann ratio in the compressor for the turbojet engine using the following parameters: Total temperature before turbine is 1200 K, Compression efficiency and Expansion efficiency equal to 0.9, the temperature at the engine inlet is 288K. 3.81 102.68 O 1.47 51.34

can you help me pls it's for 20 minutes

Answer 1

Tuobojet je , T-2 , T =288 k s compression raho - 2 p-c 2 T3 = ? &c=0.9, T2 = 41 Verp=0.9. I3 = sphy yl - C . an. 1.4-1 a . 288 P, UT = P v P = ( 2 Y = e So, op = 2. opt. 2x 1 2 = 2 =) T2l = 380k. Now, for optimum wrat = Izt fra woot = CP (T3-T4 - (T2-T)). 380 288853 Та - пал TI- Tmino 128k &c = T2 = Tt = Tit/TR-T J -TI uc &T= Toguty - Tu - (T3-T41) &T o TB-T4 = T3 - ( 13 - 13 ) & cret = a ( - / + (T3 - 13 ) & T - t.- (TIR-II) + %). what = c (TB (1-2) &T - Ti (11/ ) ) daral -0 => p fulo + a) Os (-o) ) =0. с do - 0 . Now, To = (2 14-17² x 288 - 619.058k 0.980.9 so, Fo2 620k]