Problem (5.4) A nozzle in an impulse turbine delivers 1 kg/s steam to a set of blades moving at 200 m/s. The nozzles are inclined at an angle of 16° to the plane of the wheel. The blade velocity coefficient is 0.72, calculate the blade efficiency, work done and also estimate the energy lost in the blades as; m° (- 2) .Take the blade angles at inlet and | putlet =25°.

Problem (5.4) A nozzle in an impulse turbine delivers 1 kg/s steam to a set of blades moving at 200 m/s. The nozzles are inclined at an angle of 16° to the plane of the wheel. The blade velocity coefficient is 0.72, calculate the blade efficiency, work done and also estimate the energy lost in the blades as; m° (- 2) .Take the blade angles at inlet and | putlet =25°.

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter40: Typical Operating Conditions

Section: Chapter Questions

Problem 10RQ: The seasonal energy efficiency ratio (SEER) includes the energy used in the _____and _____cycles.

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Problem (5.4) A nozzle in an impulse turbine delivers 1 kg/s steam to a set of blades moving at 200 m/s. The nozzles are inclined at an angle of 16° to the plane of the wheel. The blade velocity coefficient is 0.72, calculate the blade efficiency, work done and also estimate the energy lost in the blades as; m° (- .Take the blade angles at inlet and 2 2 outlet =25°. Ans. [76%,105 kw, 27.072 kW]
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Answer The following A twin jet Pelton wheel is required to generate 7500 KW when the available head at a nozzle is 400 m. Assuming generator efficiency of 95% overall wheel efficiency of 80% , coefficient of velocity as 0.98, speed ratio as 0.46, reduction in relative velocity while passing through bucket as 15% and taking that the jet is deflected through 165 by the bucket, the diameter of each jet O 13.69 cm 18.84 cm 20.21 cm 10.54 cm
A two-jet Pelton wheel is required to produce 2MW power with 400rpm. The diameter of the wheel is 1.5m. Gross head measure from the water surface in reservoir to the nozzle is 200m. Head loss in the penstock and nozzle is 10% and the deflected velocity by the bucket reduced 10%. If the deflected angle is 1650, determine; a) Nozzle head b) Euler Head c) Velocity ratio d) Diameter of jet
1 Add file Q4) A SI engine four-stroke cycle V8, 0.005m3 displacement, mounted on a hydraulic dynamometer has an output of 53,6 kW at 405O RPM. Water absorbs the energy output of the engine as it flows through the dynamometer at a rate of 0.113 m3 per minute. The dynamometer has an efficiency of 93% and the water enters at a temperature of 20°C.Calculate: (a) Exit temperature of the water. [°C] (b) Torque output of the engine at this condition. [N.m] (c) What is bmep at this condition? [kPa] * 1 Add file Submit Never submit passwords through Google Forms. This form was created inside of University of Basrah. Report Abuse Google Forms
What is the turbine output of 100m head and delivering 1 cu. m/ sec in a hydro electric power plant if turbine efficiency is 88%?
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Problem (5.1) An impulse turbine is supplied with steam at a pressure of 1.6 MPa and temperature of 250°C. The back pressure is 0.012 MPa. Nozzle efficiency is 0.9. Blade velocity coefficient K=0.8, mechanical efficiency=0.9, nozzle angle =20°. Symmetrical blades with angle 30°. Find the revolution per minute if the mean diameter of wheel is 75 cm, the blade efficiency, axial thrust per kg steam, exit loss and the stage efficiency.