Sketch the fully annotated velocity triangles

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Reference no: EM13137718

Sketch the fully annotated velocity triangles for a Parsons turbine stage. Use your sketch to show that the specific work produced per stage is given as w_stage = (C_b)^2 [1 + 2(f/C_b)(cot(B_1))].

At a particular stage of a Parsons reaction turbine, the mean blade speed is 60 m/s and the steam specific volume v = 0.577 m3/kg. The fixed and moving blades at this stage have inlet angles of 30 degrees and exit angles of 20 degrees. Sketch the velocity triangles and find:

a) The axial velocity

b) The blade height for this stage if the blade height is 1/10 of the mean blade diameter and the steam mass flow is 13.5 kg/s

c) The stage power

d) The diagram efficiency

Reference no: EM13137718

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