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+//Chapter-1, Illustration 9, Page 22
+//Title: Fuels and Combustion
+//=============================================================================
+clc
+clear
+
+//INPUT DATA
+C=0.84;//Percentage composition of Carbon
+H=0.14;//Percentage composition of Hydrogen
+O=0.02;//Percentage composition of oxygen
+CO2=8.85;//Volumetric composition of CO2
+CO=1.2;//Volumetric composition of CO
+O2=6.8;//Volumetric composition of Oxygen
+N2=83.15;//Volumetric composition of Nitrogen
+M1=44;//Molecular mass of CO2
+M2=28;//Molecular mass of CO
+M3=32;//Molecular mass of O2
+M4=28;//Molecular mass of N2
+a=8/3;//O2 required per kg C
+b=8;//O2 required per kg H2
+mair=0.23;//Mass of air
+
+//CALCULATIONS
+c=C*a;//O2 required per kg of fuel for C
+d=H*b;//O2 required per kg of fuel for H2
+tO2=c+d+O;//Theoreticcal O2 required in kg/kg of fuel
+tm=tO2/mair;//Theoretical mass of air in kg/kg of fuel
+c1=CO2*M1;//Proportional mass of CO2 by Volume
+c2=CO*M2;//Proportional mass of CO by Volume
+c3=O2*M3;//Proportional mass of O2 by Volume
+c4=N2*M4;//Proportional mass of N2 by Volume
+c=c1+c2+c3+c4;//Total proportional mass of constituents
+m1=c1/c;//Mass of CO2 per kg of flue gas in kg
+m2=c2/c;//Mass of CO per kg of flue gas in kg
+m3=c3/c;//Mass of O2 per kg of flue gas in kg
+m4=c4/c;//Mass of N2 per kg of flue gas in kg
+mC=((m1*12)/M1)+((m2*12)/M2);//Mass of carbon per kg of dry flue gas in kg
+md=C/mC;//Mass of dry flue per kg of fuel in kg
+p=(4*m2)/7;//Oxygen required to burn CO in kg
+meO2=md*(m3-p);//Mass of excess O2 per kg of fuel in kg
+me=meO2/mair;//Mass of excess air in kg/kg fuel
+mt=tm+me;//Total air required per kg fuel
+
+//OUTPUT
+mprintf('Mass of excess air supplied per kg of fuel burnt is %3.1f kg/kg of fuel \n Air-fuel ratio is %3.1f:1',me,mt)
+
+
+
+
+
+//==============================END OF PROGRAM=================================
+