Answer to Question #116568 in Chemical Engineering for rahul

Question

. In a gas power plant, liquid normal Butane is used as the fuel in the
combustion chamber. The fuel enters the combustion chamber at 25°C and 10 atm at
a rate of 0.7 kg/min. The fuel is burned with 180% excess air that is compressed to 10
atm and preheated to 500 K before entering the combustion chamber. The products of
the combustion are used as the working fluid in a gas power plant and enter the
turbine at 1400 K and 10 atm. The gas leaves the turbine at 800 K and 1 atm. The
adiabatic efficiency of the turbine is 80% and the surrounding temperature is 25°C.
The combustion process is complete.
Draw a schematic diagram of the system and determine:
a. The rate of heat transfer from the combustion chamber.
b. The rate of entropy generation (the net rate of change of entropy).
c. The rate of irreversibility (exergy destruction) during the whole process.
d. Show these processes schematically on a T-s diagram

Answer 1

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