91: Consider a reheat-regenerative vapour power cycle with two feed-water heaters. The steam enters the first turbine at 151 bar, 600°C and expands to 41 bar. Then some steam is extracted from the turbine at this pressure for closed feed- water heater and the remaining steam is reheated to 600°C at the same pressure. The extracted steam is completely condensed in the heater and is then pumped to 150 bar before it mixes with the feed-water at 260°C at the same pressure. The steam for open feed-water heater is extracted from low pressure turbine at the pressure of 5 bar and the remaining steam is further expanded to condenser pressure of 0.1 bar. If the working fluid experiences no irreversibities, as it passes thought turbines, pumps, boiler, reheater condenser, determine Thermal efficiency of the cycle and mass flow rate of steam in kg/h, if cycle produces 210 MW.

91: Consider a reheat-regenerative vapour power cycle with two feed-water heaters. The steam enters the first turbine at 151 bar, 600°C and expands to 41 bar. Then some steam is extracted from the turbine at this pressure for closed feed- water heater and the remaining steam is reheated to 600°C at the same pressure. The extracted steam is completely condensed in the heater and is then pumped to 150 bar before it mixes with the feed-water at 260°C at the same pressure. The steam for open feed-water heater is extracted from low pressure turbine at the pressure of 5 bar and the remaining steam is further expanded to condenser pressure of 0.1 bar. If the working fluid experiences no irreversibities, as it passes thought turbines, pumps, boiler, reheater condenser, determine Thermal efficiency of the cycle and mass flow rate of steam in kg/h, if cycle produces 210 MW.

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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