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

Elements Of Electromagnetics
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4G
4G
4G
5:34 PM
72
applied thermodynamics and engineering fifth edition... Z
8.5 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
277
Urheberrechtlich geschütztes Material
Steam Cycles
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 0.035S bar. For preliminary calculations it is assumed
that the actual cycle will have an efficiency ratio of 70% and that the generator mechanical
and clectrical efficiency is 95%. Calculate the maximum continuous rating of the boiler
in kilograms per hour.
(632 000 kg/h)
()
Transcribed Image Text:4G 4G 4G 5:34 PM 72 applied thermodynamics and engineering fifth edition... Z 8.5 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 277 Urheberrechtlich geschütztes Material Steam Cycles 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 0.035S bar. For preliminary calculations it is assumed that the actual cycle will have an efficiency ratio of 70% and that the generator mechanical and clectrical efficiency is 95%. Calculate the maximum continuous rating of the boiler in kilograms per hour. (632 000 kg/h) ()
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