A reaction turbine running at 360 rpm consumes 5 kgs steam...

A reaction turbine running at 360 rpm consumes 5 kg/s steam, Tip leakage is 10%. The discharge tip angle for both the blades is 20º. The axial velocity of flow is 0.75 times blade velocity. The power developed by a certain pair is 5 kW, where the pressure is 2 bar and dryness fraction 0.95. Find the drum diameter and blade height.

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Transcript

00:05 Single stage steam turbine is supplied with steam at 5 bar 200 degrees c at the rate of 50 kilograms per minute.

00:45 It exhausts into a condenser at a pressure of 0 .2 .2 bar.

01:13 The blade speed is 400 meters per second.

01:23 The nozzles are inclined at a 20 degree angle to the plane of the wheel, and the outlet blade is 30 degrees, neglecting friction loss, find the blade efficiency, the stage efficiency, and power developed by the turbine.

02:30 Power developed by the turbine.

02:41 Okay.

02:44 Okay, let's see here.

02:51 So let's just got steam is at 5 bar 200 degrees c.

03:00 We have the rate of 50 kilograms per minute.

03:03 My condenser pressure is 0 .2 bars.

03:08 My blade speed here.

03:15 So let's go my blade speed, which is 400 meters per second.

03:37 I'm from steam tables at 5 bar 200 degrees c.

04:05 At 2 bars, 0 .2 bars, 251hf2 is 2358, and sf2 is kilojoules per kilogram, small fg is 7 .0773 kilojoules per kilogram.

05:55 I should have never done this.

06:00 Okay, s1 equals s2, so i get an x2 equals 0 .88.