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In a coal based thermal power plant the boiler operates at 250°C and 80 bar pressure and condenser operates at 0.10 bar and 29°C. The steam enters the turbine at 450°C and the expansion is 85% isentropic. Specific. heat ot steam at 80 bar and 250°C is 1.75 kJ/kg. The pumping efficiency is 90%. The following data table is given: Actual dryness fraction in the turblne outlet is _____0.89

Answer» In a coal based thermal power plant the boiler operates at 250°C and 80 bar pressure and condenser operates at 0.10 bar and 29°C. The steam enters the turbine at 450°C and the expansion is 85% isentropic. Specific. heat ot steam at 80 bar and 250°C is 1.75 kJ/kg. The pumping efficiency is 90%. The following data table is given:



Actual dryness fraction in the turblne outlet is _____
  1. 0.89


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