Q3/ In a steam power plant the high pressure turbine is fed with steam at 60 bar, 450°C and enters low pressure turbine at 3 bar with a portion of steam bled out for feed heating at this intermediate pressure. Steam finally leaves low pressure turbine at 0.05 bar for inlet to condenser. Closed feed heater raises the condensate temperature to 115°C and produces saturated liquid. Bled steam leaving closed feed heater is passed through trap to mix with condensate leaving condenser. Consider power output to be 30 MW. Determine: (a) The fraction of steam bled for feed heating. (b) The capacity of boiler in kg/hr. (c) The overall thermal efficiency of plant. (d) Give layout and T-s diagram of the cycle.

Q3/ In a steam power plant the high pressure turbine is fed with steam at 60 bar, 450°C and enters low pressure turbine at 3 bar with a portion of steam bled out for feed heating at this intermediate pressure. Steam finally leaves low pressure turbine at 0.05 bar for inlet to condenser. Closed feed heater raises the condensate temperature to 115°C and produces saturated liquid. Bled steam leaving closed feed heater is passed through trap to mix with condensate leaving condenser. Consider power output to be 30 MW. Determine: (a) The fraction of steam bled for feed heating. (b) The capacity of boiler in kg/hr. (c) The overall thermal efficiency of plant. (d) Give layout and T-s diagram of the 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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Q3/ In a steam power plant the high pressure turbine is fed with steam at 60 bar, 450°C and enters low pressure turbine at 3 bar with a portion of steam bled out for feed heating at this intermediate pressure. Steam finally leaves low pressure turbine at 0.05 bar for inlet to condenser. Closed feed heater raises the condensate temperature to 115°C and produces saturated liquid. Bled steam leaving closed feed heater is passed through trap to mix with condensate leaving condenser. Consider power output to be 30 MW. Determine: (a) The fraction of steam bled for feed heating. (b) The capacity of boiler in kg/hr. (c) The overall thermal efficiency of plant. (d) Give layout and T-s diagram of the cycle.