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.
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.
Elements Of Electromagnetics
7th Edition
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Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Question
A combined Gas and Steam Turbine Power Plant is designed to produce 190 MW
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,](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F83ba6ba7-08dc-4822-81bb-e135163ac877%2F3a5893d5-fa67-434e-94ef-0bff85bf8d71%2Fhh4nzeo_processed.jpeg&w=3840&q=75)
Transcribed Image Text:(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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