A generating station is to give a power output of 200 MW. The super heat outlet pressure of the boiler is to be 170 bar and the temperature 600 C. After expansion through the first-stage turbine to a pressure of 40 bar. 15% of the steam is extracted for feed heating The remainder is reheated at 600°C and is then expanded through the second turbine stage to a condenser pressure of 0.035 bar. For preliminary calculations it is assumed that the actual cycle will have an efficiency ratio of 70% and that the generator mechanical and electrical efficiency is 95% Calculate the maximum continuous rating of the boiler in kilograms per hour.

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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A generating station is to give a power output of 200 MW. The super heat outlet pressure of the boiler is to be 170 bar and the temperature 600 C. After expansion through the first-stage turbine to a pressure of 40 bar. 15% of the steam is extracted for feed heating The remainder is reheated at 600°C and is then expanded through the second turbine stage to a condenser pressure of 0.035 bar. For preliminary calculations it is assumed that the actual cycle will have an efficiency ratio of 70% and that the generator mechanical and electrical efficiency is 95% Calculate the maximum continuous rating of the boiler in kilograms per hour.

4G. 4G
4G2
10:27
64
You
2 minutes ago
A generating station is to give a power output of 200 MW. The superheat outlet pressure
of the boiler is to be 170 bar and the temperature 600 °C. After expansion through the
8.5
277
Urheberrechtlich geschütztes Material
les
first-stage turbine to a pressure of 40 bar, 15% of the steam is extracted for feed heating.
The remainder is reheated at 600 °C and is then expanded through the second turbine
stage to a condenser pressure of 0.035 bar. For preliminary calculations it is assumed
that the actual cycle will have an efficiency ratio of 70% and that the generator mechanical
and electrical efficiency is 95%. Calculate the maximum continuous rating of the boiler
in kilograms per hour.
(632000 kg/h)
Transcribed Image Text:4G. 4G 4G2 10:27 64 You 2 minutes ago A generating station is to give a power output of 200 MW. The superheat outlet pressure of the boiler is to be 170 bar and the temperature 600 °C. After expansion through the 8.5 277 Urheberrechtlich geschütztes Material les first-stage turbine to a pressure of 40 bar, 15% of the steam is extracted for feed heating. The remainder is reheated at 600 °C and is then expanded through the second turbine stage to a condenser pressure of 0.035 bar. For preliminary calculations it is assumed that the actual cycle will have an efficiency ratio of 70% and that the generator mechanical and electrical efficiency is 95%. Calculate the maximum continuous rating of the boiler in kilograms per hour. (632000 kg/h)
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