Changeset 261 for trunk/eml/heat_exchangers

Timestamp:

Jun 15, 2007, 7:12:30 PM (16 years ago)

Author:

gerson bicca

Message:

documenting PHE heat exchanger

Location:

trunk/eml/heat_exchangers

Files:

• HEX_Engine.mso (modified) (1 diff)
• PHE.mso (modified) (3 diffs)

trunk/eml/heat_exchangers/HEX_Engine.mso

@@ -83 +83 @@
 VARIABLES
 
-Inlet           as Properties_In_Out    (Brief="Properties at Inlet Stream");
+Inlet                   as Properties_In_Out            (Brief="Properties at Inlet Stream");
 Average         as Properties_Average   (Brief="Properties at Average Temperature");
-Outlet          as Properties_In_Out    (Brief="Properties at Outlet Stream");
-Wall                    as Properties_Wall              (Brief="Properties at Wall Temperature");
+Outlet          as Properties_In_Out            (Brief="Properties at Outlet Stream");
+Wall                    as Properties_Wall                      (Brief="Properties at Wall Temperature");
 
 end

trunk/eml/heat_exchangers/PHE.mso

@@ -25 +25 @@
         Brief           = "Shortcut model  for plate and Frame heat exchanger.";
         Info            =
-        "to be documented.";
+        "
+        Model of a gasketed plate heat exchanger. 
+        The heat transfer and pressure loss calculations are based on Kumar [1] work.
+        The following assumptions are considered in order to derive the mathematical model [2]:
+        
+        A.1 : Steady-State operation;
+        A.2 : No phase changes;
+        A.3 : No heat loss to the surroundings.
+        A.4 : Uniform distribution of flow through the channels of a pass.
+
+        References:
+    
+        [1] E.A.D. Saunders, Heat Exchangers: Selection, Design and
+    Construction, Longman, Harlow, 1988.
+    
+        [2] J.A.W. Gut, J.M. Pinto, Modeling of plate heat exchangers
+    with generalized configurations, Int. J. Heat Mass Transfer
+    46 (14) (2003) 2571\2585.
+        ";
 
 PARAMETERS
 
 outer PP                        as Plugin                       (Brief="External Physical Properties", Type="PP");
-outer NComp             as Integer              (Brief="Number of Components");
-        Pi                                                      as constant             (Brief="Pi Number",Default=3.14159265);
+outer NComp             as Integer              (Brief="Number of Chemical Components");
+        Pi                                              as constant             (Brief="Pi Number",Default=3.14159265);
         Kp1(15)                         as constant             (Brief="First constant in Kumar calculation for Pressure Drop");
-        Kp2(15)                         as constant             (Brief="Second constant Kumar calculation for Pressure Drop");
+        Kp2(15)                         as constant             (Brief="Second constant in Kumar calculation for Pressure Drop");
         Kc1(14)                         as constant             (Brief="First constant in Kumar calculation for Heat Transfer");
         Kc2(14)                         as constant             (Brief="Second constant Kumar calculation for Heat Transfer");
@@ -39 +57 @@
         
         ChevronAngle    as Switcher                     (Brief="Chevron Corrugation Inclination Angle in Degrees ",Valid=["30","45","50","60","65"],Default="30");
-        Method                          as Switcher                     (Brief="Method of Calculation",Valid=["NTU","LMTD"],Default="NTU");
-        SideOne                         as Switcher                     (Brief="Fluid Alocation in the Side I",Valid=["hot","cold"],Default="hot");
+        Method                          as Switcher                     (Brief="Method of Thermal Calculation",Valid=["NTU","LMTD"],Default="NTU");
+        SideOne                         as Switcher                     (Brief="Fluid Alocation in the Side I - (The odd channels)",Valid=["hot","cold"],Default="hot");
         Nchannels                       as Integer                              (Brief="Total Number of Channels in The Whole Heat Exchanger");
         Nplates                         as Integer                              (Brief="Total Number of Plates in The Whole Heat Exchanger",Default=25);
@@ -67 +85 @@
 in      InletHot                as stream                       (Brief="Inlet Hot Stream");     
 in      InletCold           as stream                   (Brief="Inlet Cold Stream");
-out     OutletHot       as streamPH             (Brief="Outlet Hot Stream");
-out     OutletCold      as streamPH             (Brief="Outlet Cold Stream");
+out     OutletHot       as streamPH     (Brief="Outlet Hot Stream");
+out     OutletCold      as streamPH     (Brief="Outlet Cold Stream");
 
         HotSide                         as Main_PHE                             (Brief="Plate Heat Exchanger Hot Side");
         ColdSide                        as Main_PHE                             (Brief="Plate Heat Exchanger Cold Side");
-        Thermal                                 as Thermal_PHE          (Brief="Thermal Results");
+        Thermal                         as Thermal_PHE          (Brief="Thermal Results");
 
 SET