Consider a power plant operating on a Rankine cycle using steam as the working fluid. The boiler pressure is 2500 kPa and the steam leaving the boiler is superheated to a temperature 126 ◦ C above its saturation temperature. The condenser temperature is 50 ◦ C and it discharges saturated liquid. The efficiency of the turbine is 0.90 and of the pump 0.80 as compared to reversible and adiabatic equipment operating at the same pressure ranges. a) Sketch the cycle on a T -S diagram. b) Calculate the thermal efficiency of the cycle. c) Compare the thermal efficiency of this Rankine cycle with the thermal efficiency of a Carnot cycle receiving heat at the saturation temperature of steam at 2500 kPa and discarding it at 50 ◦
Consider a power plant operating on a Rankine cycle using steam as the working fluid. The boiler pressure is 2500 kPa and the steam leaving the boiler is superheated to a temperature 126 ◦ C above its saturation temperature. The condenser temperature is 50 ◦ C and it discharges saturated liquid. The efficiency of the turbine is 0.90 and of the pump 0.80 as compared to reversible and adiabatic equipment operating at the same pressure ranges. a) Sketch the cycle on a T -S diagram. b) Calculate the thermal efficiency of the cycle. c) Compare the thermal efficiency of this Rankine cycle with the thermal efficiency of a Carnot cycle receiving heat at the saturation temperature of steam at 2500 kPa and discarding it at 50 ◦
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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Consider a power plant operating on a Rankine cycle using steam as the working fluid. The boiler pressure is 2500 kPa and the steam leaving the boiler is superheated to a temperature 126 ◦ C above its saturation temperature. The condenser temperature is 50 ◦ C and it discharges saturated liquid. The efficiency of the turbine is 0.90 and of the pump 0.80 as compared to reversible and adiabatic equipment operating at the same pressure ranges.
- a) Sketch the cycle on a T -S diagram.
- b) Calculate the thermal efficiency of the cycle.
- c) Compare the thermal efficiency of this Rankine cycle with the thermal efficiency of a Carnot cycle receiving heat at the saturation temperature of steam at 2500 kPa and discarding it at 50 ◦
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