Changeset 680

Timestamp:

Nov 18, 2008, 11:18:51 AM (15 years ago)

Author:

Argimiro Resende Secchi

Message:

Updating flash model.

Location:

trunk/eml

Files:

• stage_separators/flash.mso (modified) (2 diffs)
• types.mso (modified) (1 diff)

trunk/eml/stage_separators/flash.mso

@@ -63 +63 @@
         Level as length (Brief="liquid height");
         Across as area (Brief="Flash Cross section area");
+        vMfrac as positive (Brief="Vapour Molar fraction", Symbol="\ksi");
         vfrac as positive (Brief="Vapourization fraction", Symbol="\phi");
         Pratio as positive      (Brief = "Pressure Ratio", Symbol ="P_{ratio}");        
@@ -86 +87 @@
         sum(OutletL.z)=sum(OutletV.z);
 
+        if Inlet.F > 0 then
+                "Vaporization Ratio"
+                OutletV.F = Inlet.F * vfrac;
+        else
+                "Vaporization Ratio"
+                OutletV.F = (OutletV.F + OutletL.F) * vfrac;
+        end
+
         "Vaporization Fraction"
-        OutletV.F = Inlet.F * vfrac;
+        MV = (ML + MV) * vMfrac;
 
         "Liquid Volume"

trunk/eml/types.mso

@@ -112 +112 @@
 
 # Enthalpy
-enth_mass as Real (Brief = "Mass Enthalpy", Default=500, Lower=-10000, Upper=10000, final Unit = 'kJ/kg');
-enth_mol as Real (Brief = "Molar Enthalpy", Default=500, Lower=-1e9, Upper=1e9, final Unit = 'kJ/kmol');
+enth_mass as Real (Brief = "Mass Enthalpy", Default=500, Lower=-1e14, Upper=1e14, final Unit = 'kJ/kg');
+enth_mol as Real (Brief = "Molar Enthalpy", Default=500, Lower=-1e16, Upper=1e16, final Unit = 'kJ/kmol');
 
 # Entropy