A medium size power station is used to produce 30 MW net power for a refinery. The station uses steam as the operating fluid and operates according to the Carnot cycle between the pressure limits of 0.4 bar and 35 bar. Steam enters the boiler as a saturated liquid and leaves it as a dry saturated vapour. (i) Calculate the thermal efficiency of the power station if the isentropic efficiency of the steam turbine is 94%. (ii) State main disadvantages of using the Carnot cycle as the basis for a power station. (iii) State the name of the cycle that is used in practice in power stations, along with three key benefits over the Carnot cycle.
A medium size power station is used to produce 30 MW net power for a refinery. The station uses steam as the operating fluid and operates according to the Carnot cycle between the pressure limits of 0.4 bar and 35 bar. Steam enters the boiler as a saturated liquid and leaves it as a dry saturated vapour. (i) Calculate the thermal efficiency of the power station if the isentropic efficiency of the steam turbine is 94%. (ii) State main disadvantages of using the Carnot cycle as the basis for a power station. (iii) State the name of the cycle that is used in practice in power stations, along with three key benefits over the Carnot cycle.
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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Question
A medium size power station is used to produce 30 MW net power for a
refinery. The station uses steam as the operating fluid and operates
according to the Carnot cycle between the pressure limits of 0.4 bar and
35 bar. Steam enters the boiler as a saturated liquid and leaves it as a
dry saturated vapour.
(i) Calculate the thermal efficiency of the power station if the
isentropic efficiency of the steam turbine is 94%.
(ii) State main disadvantages of using the Carnot cycle as the basis for
a power station.
(iii) State the name of the cycle that is used in practice in power
stations, along with three key benefits over the Carnot cycle.
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