Changeset 110 for mso/eml/heat_exchangers/HEX_Engine.mso

Timestamp:

Jan 12, 2007, 4:44:02 PM (15 years ago)

Author:

gerson bicca

Message:

modified some equations

File:

• mso/eml/heat_exchangers/HEX_Engine.mso (modified) (17 diffs)

mso/eml/heat_exchangers/HEX_Engine.mso

@@ -69 +69 @@
 Hot     as stream; # Inlet Hot Stream
 Cold    as stream; # Inlet Cold Stream
+
 end
 
@@ -78 +79 @@
 Hot     as stream_therm;  # Outlet Hot Stream
 Cold    as stream_therm;  # Outlet Cold Stream
+
 end
 
@@ -94 +96 @@
 rho             as dens_mass            (Brief="Stream Density" ,Default=1000, Lower=1e-3, Upper=5e5);
 Mu              as viscosity            (Brief="Stream Viscosity",Lower=0.0001);
-Cp              as cp_mol                       (Brief="Stream Molar Heat Capacity", Upper=10e10);
+Cp              as cp_mol                       (Brief="Stream Molar Heat Capacity", Upper=1e10);
 K               as conductivity         (Brief="Stream Thermal Conductivity", Default=1.0, Lower=1e-5, Upper=500);
+
 end
 
@@ -106 +109 @@
 rho             as dens_mass    (Brief="Stream Density" ,Default=1000, Lower=1e-3, Upper=5e5);
 Mu              as viscosity    (Brief="Stream Viscosity",Default=1, Lower=1e-5, Upper=1e5);
-Cp              as cp_mol               (Brief="Stream Molar Heat Capacity", Upper=10e10);
+Cp              as cp_mol               (Brief="Stream Molar Heat Capacity", Upper=1e10);
 K               as conductivity (Brief="Stream Thermal Conductivity", Default=1.0, Lower=1e-5, Upper=500);
+
 end
 
@@ -116 +120 @@
 VARIABLES
 Mu              as viscosity    (Brief="Stream Viscosity",Default=1, Lower=1e-5, Upper=1e5);
-Cp              as cp_mol               (Brief="Stream Molar Heat Capacity", Upper=10e10);
+Cp              as cp_mol               (Brief="Stream Molar Heat Capacity", Upper=1e10);
 K               as conductivity (Brief="Stream Thermal Conductivity", Default=1.0, Lower=1e-5, Upper=500);
 Twall   as temperature  (Brief="Wall Temperature",Lower=50);
+
 end
 
@@ -130 +135 @@
 Outlet          as Properties_In_Out;           # Properties at Outlet Stream
 Wall            as Properties_Wall;                     # Properties at Wall Temperature
+
 end
 
@@ -170 +176 @@
 Phi   as positive                 (Brief="Phi Correction",Default=1,Lower=1e-3);
 Vtube as velocity                 (Brief="Tube Side Velocity",Lower=1e-8);
+
 end
 
@@ -231 +238 @@
 #=====================================================================  
 VARIABLES
+
 Rtube   as positive     (Brief="Tube Resistance",Unit="m^2*K/kW",Lower=1e-6);
 Rwall   as positive     (Brief="Wall Resistance",Unit="m^2*K/kW",Lower=1e-6);
@@ -236 +244 @@
 Rfi             as positive     (Brief="Inside Fouling Resistance",Unit="m^2*K/kW",Default=1e-6,Lower=0);
 Rfo             as positive     (Brief="Outside Fouling Resistance",Unit="m^2*K/kW",Default=1e-6,Lower=0);
+
 end
 
@@ -257 +266 @@
 "Number of Units Transference"
         NTU*Cmin = Ud*A;
+        
 end
 
@@ -266 +276 @@
 PressureDrop    as Tube_Pdrop;                  #Tube Side Pressure Drop
 HeatTransfer    as Tube_Heat_Transfer;  #Tube Side Heat Transfer
+
 end
 
@@ -275 +286 @@
 PressureDrop    as Shell_Pdrop;                 # Shell Side Pressure Drop
 HeatTransfer    as Shell_Heat_Transfer; # Shell Side Heat Transfer
+
 end
 
@@ -284 +296 @@
 Pdrop   as press_delta  (Brief="Pressure Drop",Default=0.01, Lower=0);
 FPdrop  as Real                 (Brief="Pressure Drop : Fraction of Inlet",Lower=0,Upper=0.8);
+
 end
 
@@ -293 +306 @@
 Hot     as Basic_Pdrop;# Hot Stream
 Cold    as Basic_Pdrop;# Cold Stream
+
 end     
 
@@ -309 +323 @@
 Phi     as positive                     (Brief="Phi Correction",Default=1,Lower=1e-3);
 Vmean   as velocity                     (Brief="Tube Velocity",Lower=1e-8);
+
 end
 
@@ -322 +337 @@
 fi      as fricfactor   (Brief="Friction Factor", Default=0.05, Lower=1e-10, Upper=2000);
 Re              as positive             (Brief="Reynolds Number",Default=100,Lower=1);
+
 end     
 
@@ -331 +347 @@
 HeatTransfer as DoublePipe_HeatTransfer;
 PressureDrop as DoublePipe_PressureDrop;
-end
+
+end