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+// Exa 8.5
+clc;
+clear;
+close;
+// Given data
+W_c = 500*10^-3;//water collected in kg
+C_P = 4.1868;// in kJ/kg-K
+T_o = 28.3;//outlet temp. in °C
+T_i = 14;//inlet temp. in °C
+P_bero= 785;// barometric pressure in mm
+P_gas= P_bero+90/13.6;// in mm
+T1=17+273;// gas temp. in K
+T2= 15+273;// in K
+theta = T_o-T_i;//temp. rise in °C
+Qw = W_c * C_P*theta;// in kJ
+Vgs= 2.8*10^-3;//volume of gas consumed  in m^3
+E = Qw/Vgs;// in kJ
+V1= P_gas/760*(T2/T1);// in m^3
+CalorificValue= E/V1;// in kJ/standard m^3
+disp(CalorificValue,"Calorific value in kJ/m^3 is : ")