From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

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 23/CH4/EX4.7/Example_4_7.sce |  64 +++++++++++++++++++++++++++++++++++++++++++
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+clear;
+clc;
+
+//Example 4.7
+//Caption : Program To Find Max Temperature reached in Combustion of Methane
+
+function[Q]=MCPH(T0,T,A,B,C,D)
+  t=T/T0;
+  Q=(A+((B/2)*T0*(t+1))+((C/3)*T0*T0*((t^2)+t+1))+(D/(t*T0*T0)))
+  funcprot(0);
+endfunction
+    
+
+//Combustion Of methane
+//CH4 + 2O2 --> CO2 + 2H2O
+R=8.314;
+del_H_CO2=-393509;//from table C.4
+del_H_O2=-241818;//from table C.4
+del_H_CH4=-74520;//from table C.4
+del_H_298=del_H_CO2+(2*del_H_O2)-del_H_CH4;
+del_Hp=-del_H_298;
+//moles of reactants
+n_CH4=1;
+n_O2=2+(0.2*2);//20% Excess
+n_N2=n_O2*(79/21);
+//Moles Of Products..(CO2,H2O,O2,N2)
+np=[1;2;0.4;9.03];
+//A..from Table C.1 
+A=[5.457;3.470;3.639;3.280];
+//B..from Table C.1
+B=(10^-3)*[1.045;1.450;0.506;0.593];
+//C..from Table C.1
+C=(10^-6)*[0;0;0;0];
+//D..From table C.1
+D=(10^5)*[-1.157;0.121;-0.227;0.040];
+
+E_A=0;
+E_B=0;
+E_C=0;
+E_D=0;
+for(i=1:4)
+  E_A=E_A+np(i,1)*A(i,1);
+  E_B=E_B+np(i,1)*B(i,1);
+  E_C=E_C+np(i,1)*C(i,1);
+  E_D=E_D+np(i,1)*D(i,1);
+end
+
+T0=298.15;
+a=round(T0);//Initial
+i=-1
+while (i==-1)
+  b=R*MCPH(T0,a,E_A,E_B,E_C,E_D);
+  c=b*(a-T0);
+  flag=del_Hp-c;
+  if(flag<=100) then
+    T=a-1;
+    i=1;
+  else
+    a=a+1; 
+    i=-1;
+  end  
+end
+disp('K',T,'Temperature Required(Approx)')
+//End
\ No newline at end of file
-- 
cgit