: The boiler of a power steam cycle operates at 6000 kPa and the condenser at 50 kPa. At the entrance to the turbine, the temperature is 500°C. The isentropic efficiency of the turbine is 90 percent, pressure and pump losses are negligible, and the water leaving the condenser is subcooled by 6.3°C. The boiler is sized for a mass flow rate of 18 kg/s. You are asked to: a. Represent the c
: The boiler of a power steam cycle operates at 6000 kPa and the condenser at 50 kPa. At the entrance to the turbine, the temperature is 500°C. The isentropic efficiency of the turbine is 90 percent, pressure and pump losses are negligible, and the water leaving the condenser is subcooled by 6.3°C. The boiler is sized for a mass flow rate of 18 kg/s. You are asked to: a. Represent the c
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
Chapter28: Special Refrigeration Applications
Section: Chapter Questions
Problem 15RQ: Why is two-stage compression popular for extra-low-temperature refrigeration systems?
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Problem 1:
The boiler of a power steam cycle operates at 6000 kPa and the condenser at 50 kPa. At the
entrance to the turbine, the temperature is 500°C. The isentropic efficiency of the turbine is 90
percent, pressure and pump losses are negligible, and the water leaving the condenser is
subcooled by 6.3°C. The boiler is sized for a mass flow rate of 18 kg/s. You are asked to:
a. Represent the cycle on P-v and T-s diagrams.
b. Compute the rate at which heat is added in the boiler.
c. Compute the power required to operate the pumps.
d. Determine the net power produced by the cycle.
e. Compute the thermal efficiency.
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