PAPER NO: MECH46-L01 Final EXAM SPRING 2020 Problem 3. (7 points) Air with density of 1.41 kg/m' enters a reaction axial

[answerhappygod]

Paper No Mech46 L01 Final Exam Spring 2020 Problem 3 7 Points Air With Density Of 1 41 Kg M Enters A Reaction Axial 1 (210.14 KiB) Viewed 22 times

Paper No Mech46 L01 Final Exam Spring 2020 Problem 3 7 Points Air With Density Of 1 41 Kg M Enters A Reaction Axial 2 (370.21 KiB) Viewed 22 times

PAPER NO: MECH46-L01 Final EXAM SPRING 2020 Problem 3. (7 points) Air with density of 1.41 kg/m' enters a reaction axial-flow turbine at 136 m/s in the direction of 590 with respect to the vertical axis. If the rotor has dimensions 11=0.36 m and 1=0.21 m and is rotating at 4600 rpm, determine the blade angles at the mean radii of both the inlet and outlet and estimate its output shaft power. In = [ (ri? + n)/2]"? A = 1 (ri-11°). Po = md. U (V.1+ V.2).
W2 M 법시 Solution: Given: at The velocity diagram is given as shown in the Figure P Vi 11 kg/un3 A/S deg m LI 156 59 0.36 N гр 1600 02 4 गा Calculate the mean radies and the flow area m = [(1t2 + 1/2)/2 J12 ma 4 m2 1.269 ( point) 0.293 Upi rus / 30 141.96 m's (0.5 point) Calculate Val = V1 cos alpha Val = 80.3459 INS point) Calculate Vul = V1 si alpha VH1 = 133.72 11/ (1 point) Froin fan betal = (Vul - L)/Val tan B1-1-01.1026(i potat)