QUESTION 3 The air gas turbine plant is taken into the low-pressure compressor at 20°C and 105kPa. After the compressor it is passed through an intercooler where its temperature is reduced to 27°C. The cooled air is further compressed in the high pressure compressor and then passed to the combustion temperature where its temperature is increased to 750°C through burning fuel. The combustion products expand in the high-pressure turbine that runs the compressor. Further expansion of the gas continues in the low-pressure turbine that drives the alternator. The gases coming out from the low-pressure turbine at 105kPa are used for heating the incoming air from the high-pressure compressor. The pressure ratio of each compressor is 2, the isentropic efficiency of each compressor and each turbine is 82%; where the air flow rate is 16kg/s and the calorific value of fuel is 42MJ/kg. The heat exchanger effectiveness is 72%. Without considering the mechanical, pressure and heat losses in the plant: 3.1. Draw a detailed the T- s diagram of this plant. Determine: 3.2. the power output; 3.3. the overall thermal efficiency; 3.4. the specific fuel consumption. Take: Cp = 1.0kJ/kgK and gamma Cp = 1.15kJ/kgK and gamma = 1.33 for gas. %3D 1.4 for air. %3D %3D Heat Exchanger Intercooler 7= 20°e C.C Fuel L.P dH H.P Air in Generator L.P

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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QUESTION 3
The air gas turbine plant is taken into the low-pressure
compressor at 20°C and 105kPa. After the compressor
it is passed through an intercooler where its temperature
is reduced to 27°C. The cooled air is further compressed
in the high pressure compressor and then passed to the
combustion temperature where its temperature is increased
to 750°C through burning fuel. The combustion products
expand in the high-pressure turbine that runs the compressor.
Further expansion of the gas continues in the low-pressure
turbine that drives the alternator. The gases coming out from
the low-pressure turbine at 105kPa are used for heating the
incoming air from the high-pressure compressor. The pressure
ratio of each compressor is 2, the isentropic efficiency of each
compressor and each turbine is 82%; where the air flow rate
is 16kg/s and the calorific value of fuel is 42MJ/kg. The heat
exchanger effectiveness is 72%. Without considering the
mechanical, pressure and heat losses in the plant:
3.1. Draw a detailed the T- s diagram of this plant.
Determine:
3.2. the power output;
3.3. the overall thermal efficiency;
3.4. the specific fuel consumption.
Take: Cp = 1.0kJ/kgK and gamma
Cp = 1.15kJ/kgK and gamma = 1.33 for gas.
1.4 for air.
%3D
Heat
Exchanger
Interceoler
7=20°
C.C
Fuel
16
L.P
H.P
H.P
Air in
Generalor
L.P
Transcribed Image Text:QUESTION 3 The air gas turbine plant is taken into the low-pressure compressor at 20°C and 105kPa. After the compressor it is passed through an intercooler where its temperature is reduced to 27°C. The cooled air is further compressed in the high pressure compressor and then passed to the combustion temperature where its temperature is increased to 750°C through burning fuel. The combustion products expand in the high-pressure turbine that runs the compressor. Further expansion of the gas continues in the low-pressure turbine that drives the alternator. The gases coming out from the low-pressure turbine at 105kPa are used for heating the incoming air from the high-pressure compressor. The pressure ratio of each compressor is 2, the isentropic efficiency of each compressor and each turbine is 82%; where the air flow rate is 16kg/s and the calorific value of fuel is 42MJ/kg. The heat exchanger effectiveness is 72%. Without considering the mechanical, pressure and heat losses in the plant: 3.1. Draw a detailed the T- s diagram of this plant. Determine: 3.2. the power output; 3.3. the overall thermal efficiency; 3.4. the specific fuel consumption. Take: Cp = 1.0kJ/kgK and gamma Cp = 1.15kJ/kgK and gamma = 1.33 for gas. 1.4 for air. %3D Heat Exchanger Interceoler 7=20° C.C Fuel 16 L.P H.P H.P Air in Generalor L.P
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