A combined Gas and Steam Turbine Power Plant is designed to produce 190 MWmechanical energy. The pressure ratio for the GT is 8, the inlet air temperature is 15oC and themaximum cycle temperature is 800oC. Theexhaust gas from the GT is the supply gas to thesteam generator at which a further supply of fuelis burned in the gas. Combustion in the steamgenerator raises the gas temperature to 800oC andthe gas leaves the generator at 100oC. The steamcondition at supply is at 60 bar, 600oC and thecondenser pressure is 0.05 bar. Draw (a) T-sdiagram for the combined plant, calculate (b) theflow rates of air and steam required, (c) theoverall efficiency of the combined plant, and (d)the air-fuel ratio. (25%) Q2. A combined Gas and Steam Turbine Power Plant is designed to produce 190 MWmechanical energy. The pressure ratio for the GT is 8, the inlet air temperature is 15°C and themaximum cycle temperature is 800°C. Theexhaust gas from the GT is the supply gas to thesteam generator at which a further supply of fuelis burned in the gas. Combustion in the steamgenerator raises the gas temperature to 800°C andthe gas leaves the generator at 100°C. The steamcondition at supply is at 60 bar, 600°C and thecondenser pressure is 0.05 bar. Draw (a) T-sdiagram for the combined plant, calculate (b) theflow rates of air and steam required, (c) theoverall efficiency of the combined plant, and (d)the air-fuel ratio.GTSupplementaryheatingSTQ.HRSGC.W.Fig. Q2. Schematic diagram of Combined GT andST Power PlantHint: Neglect the effect of fuel flow on the total mass flow of gas expanding in the gasturbine. Assume ideal processes and take the following properties for the combined plant:Calorific value of fuel = 43.3 MJ/kg, ya= Cp/Cy =1.4, Yg = Cp/Cv =1.33, cp.g= 1.11 kJ/kgK,Сра —D 1.005 kJ/kgk,

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Answered: A combined Gas and Steam Turbine Power…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

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A combined Gas and Steam Turbine Power Plant is designed to produce 190 MW
mechanical energy. The pressure ratio for the GT is 8, the inlet air temperature is 15oC and the
maximum cycle temperature is 800oC. The
exhaust gas from the GT is the supply gas to the
steam generator at which a further supply of fuel
is burned in the gas. Combustion in the steam
generator raises the gas temperature to 800oC and
the gas leaves the generator at 100oC. The steam
condition at supply is at 60 bar, 600oC and the
condenser pressure is 0.05 bar. Draw (a) T-s
diagram for the combined plant, calculate (b) the
flow rates of air and steam required, (c) the
overall efficiency of the combined plant, and (d)
the air-fuel ratio.

(25%) Q2. A combined Gas and Steam Turbine Power Plant is designed to produce 190 MW
mechanical energy. The pressure ratio for the GT is 8, the inlet air temperature is 15°C and the
maximum cycle temperature is 800°C. The
exhaust gas from the GT is the supply gas to the
steam generator at which a further supply of fuel
is burned in the gas. Combustion in the steam
generator raises the gas temperature to 800°C and
the gas leaves the generator at 100°C. The steam
condition at supply is at 60 bar, 600°C and the
condenser pressure is 0.05 bar. Draw (a) T-s
diagram for the combined plant, calculate (b) the
flow rates of air and steam required, (c) the
overall efficiency of the combined plant, and (d)
the air-fuel ratio.
GT
Supplementary
heating
ST
Q.
HRSG
C.W.
Fig. Q2. Schematic diagram of Combined GT and
ST Power Plant
Hint: Neglect the effect of fuel flow on the total mass flow of gas expanding in the gas
turbine. Assume ideal processes and take the following properties for the combined plant:
Calorific value of fuel = 43.3 MJ/kg, ya= Cp/Cy =1.4, Yg = Cp/Cv =1.33, cp.g= 1.11 kJ/kgK,
Сра —D 1.005 kJ/kgk,

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