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A power-generating unit runs the simple Rankine cycle with a mass flow rate of 24,000 kg/h. Water leaves the pump at 10 MPa and 60°C and enters the boiler at the same state. The steam exits the boiler at 650°C and pressure drop in the boiler is negligible. However, the steam pressure drops to 9.5 MPa in the piping between the boiler exit and the turbine inlet, and ultimately enters the turbine at 625°C. At the inlet of the condenser, the water is at 30 kPa and has a quality of 95%. There is a 10 kPa pressure drop in the condenser and the water leaves the condenser subcooled by 3.06°C. The water enters the pump in the same state that it leaves the condenser.

A power-generating unit runs the simple Rankine cycle with a mass flow rate of 24,000 kg/h. Water leaves the pump at 10 MPa and 60°C and enters the boiler at the same state. The steam exits the boiler at 650°C and pressure drop in the boiler is negligible. However, the steam pressure drops to 9.5 MPa in the piping between the boiler exit and the turbine inlet, and ultimately enters the turbine at 625°C. At the inlet of the condenser, the water is at 30 kPa and has a quality of 95%. There is a 10 kPa pressure drop in the condenser and the water leaves the condenser subcooled by 3.06°C. The water enters the pump in the same state that it leaves the condenser.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A power-generating unit runs the simple Rankine cycle with a mass flow rate of 24,000 kg/h. Water leaves the pump at 10 MPa and 60°C and enters the boiler at the same state. The steam exits the boiler at 650°C and pressure drop in the boiler is negligible. However, the steam pressure drops to 9.5 MPa in the piping between the boiler exit and the turbine inlet, and ultimately enters the turbine at 625°C. At the inlet of the condenser, the water is at 30 kPa and has a quality of 95%. There is a 10 kPa pressure drop in the condenser and the water leaves the condenser subcooled by 3.06°C. The water enters the pump in the same state that it leaves the condenser. Calculate the thermal efficiency of the cycle.
Transcribed Image Text:A power-generating unit runs the simple Rankine cycle with a mass flow rate of 24,000 kg/h. Water leaves the pump at 10 MPa and 60°C and enters the boiler at the same state. The steam exits the boiler at 650°C and pressure drop in the boiler is negligible. However, the steam pressure drops to 9.5 MPa in the piping between the boiler exit and the turbine inlet, and ultimately enters the turbine at 625°C. At the inlet of the condenser, the water is at 30 kPa and has a quality of 95%. There is a 10 kPa pressure drop in the condenser and the water leaves the condenser subcooled by 3.06°C. The water enters the pump in the same state that it leaves the condenser. Calculate the thermal efficiency of the cycle.
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