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+// Exa 8.10

+clc;

+clear;

+close;

+// Given data

+mC= 0.88;//mass of carbon in kg

+mH2= 0.03;//mass of H2 in kg

+mS= 0.005;//mass of S in kg

+O2_mass= 2.66*mC + 8*mH2 + 2*mS;// in kg

+Air_mass= O2_mass/0.23;// in kg

+Air_mass= 1.5*Air_mass;// in kg (as 50% excess air is supplied)

+disp(Air_mass,"Actula mass of air required per kg of fuel for complete combustion in kg is : ")

+// The flue gases per kg of fuel will be:

+CO2= 3.226;// in kg

+N2= 13.04;// in kg

+O2= 1.298;// in kg

+total_mass= CO2+N2+O2;// in kg

+CO2_per_by_mass= CO2/total_mass*100;// in %

+O2_per_by_mass= O2/total_mass*100;// in %

+N2_per_by_mass= N2/total_mass*100;// in %

+disp(CO2_per_by_mass,"Percentage of CO2 by mass is : ")

+disp(O2_per_by_mass,"Percentage of O2 by mass is : ")

+disp(N2_per_by_mass,"Percentage of N2 by mass is : ")

+M_wt_CO2= 44;

+CO2_Per_M_com_M_wt= CO2_per_by_mass/M_wt_CO2;// % Mass composition molecular weight

+M_wt_O2= 32;

+O2_Per_M_com_M_wt= O2_per_by_mass/M_wt_O2;// % Mass composition molecular weight

+M_wt_N2= 28;

+N2_Per_M_com_M_wt= N2_per_by_mass/M_wt_N2;// % Mass composition molecular weight

+total= CO2_Per_M_com_M_wt + O2_Per_M_com_M_wt + N2_Per_M_com_M_wt;

+CO2_per_by_vol= CO2_Per_M_com_M_wt/total*100;// in %

+O2_per_by_vol= O2_Per_M_com_M_wt/total*100;// in %

+N2_per_by_vol= N2_Per_M_com_M_wt/total*100;// in %

+disp(CO2_per_by_vol,"Percentage of CO2 by volume is : ")

+disp(O2_per_by_vol,"Percentage of O2 by volume is : ")

+disp(N2_per_by_vol,"Percentage of N2 by volume is : ")

+