Problem (5.2) An impulse turbine has a number of pressure stages (pressure compounded turbine). The nozzle angle in the first stage is 20° and the blade exit angle 30°. The blade speed =120 m/s and the velocity of steam leaving nozzle =300 m/s. If the blade velocity coefficient =0.8 and the nozzle efficiency 0.85, find the work done per kg steam and the stage efficiency. If the steam supplied to the first stage is at 2 MPa and 250°C and the condenser pressure =0.01 MPa estimate the number of stages required.

Problem (5.2) An impulse turbine has a number of pressure stages (pressure compounded turbine). The nozzle angle in the first stage is 20° and the blade exit angle 30°. The blade speed =120 m/s and the velocity of steam leaving nozzle =300 m/s. If the blade velocity coefficient =0.8 and the nozzle efficiency 0.85, find the work done per kg steam and the stage efficiency. If the steam supplied to the first stage is at 2 MPa and 250°C and the condenser pressure =0.01 MPa estimate the number of stages required.

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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