Example 12-T12-3 PBR with Variable Coolant Temperature |POLVER05_0 |1 d(Ta)/d(W) = Uarho*(T-Ta)/(Mc*Cpmc) # d(y)/d(W) = -alpha/2*(T/To)/y # d(T)/d(W) = (Uarho*(Ta-T)+(-ra)*(-Hr))/(Fao*sumcp) # d(X)/d(W) = -ra/Fao # alpha = .0002 # To = 330 # Uarho = 0.5 # Mc = 1000 # Cpmc = 18 # Hr = -20000 # Fao = 5 # thetaI = 1 # CpI = 40 # CpA = 20 # thetaB = 1 # CpB = 20 # Cto = 0.3 # Ea = 25000 # Kc = 1000*(exp(Hr/1.987*(1/303-1/T))) # ka = .004*exp(Ea/1.987*(1/310-1/T)) # yao = 1/(1+thetaB+thetaI) # xe = Kc^0.5/(2+Kc^0.5) # Cao = yao*Cto # sumcp = (thetaI*CpI+CpA+thetaB*CpB) # Ca = Cao*(1-X)*y*To/T # Cb = Cao*(1-X)*y*To/T # Cc = Cao*2*X*y*To/T # ra = -ka*(Ca*Cb-Cc^2/Kc) # W(0)=0 Ta(0)=320 y(0)=1 T(0)=330 X(0)=0 W(f)=4500