Changeset 500


Ignore:
Timestamp:
Apr 14, 2008, 3:57:48 PM (15 years ago)
Author:
Paula Bettio Staudt
Message:

Packed column model improvements

Location:
trunk
Files:
2 edited

Legend:

Unmodified
Added
Removed
  • trunk/eml/stage_separators/column.mso

    r498 r500  
    12801280* the InletL stream of the top tray;
    12811281* the InletV stream of the bottom tray;
    1282 * the pressure drop (deltaP) of each tray.
     1282* the total pressure drop (dP) of the section.
    12831283       
    12841284== Initial Conditions ==
     
    12991299        VARIABLES
    13001300        stage(NStages) as packedStage;
     1301        dP as pressure;
    13011302       
    13021303        SET
     
    13051306        stage.hs = H/NStages;   
    13061307        stage.V = stage.hs * stage.d^2*3.14159/4;
     1308       
     1309        EQUATIONS
     1310        stage.deltaP = dP/NStages;
    13071311       
    13081312        CONNECTIONS
     
    13201324*---------------------------------------------------------------------*#
    13211325Model PackedDistillation_kettle_cond as Packed_Section_Column
     1326        ATTRIBUTES
     1327        Pallete         = true;
     1328        Icon            = "icon/DistillationKettleCond";
     1329        Brief           = "Model of a distillation column with dynamic condenser and dynamic reboiler.";
     1330        Info            =
     1331"== Specify ==
     1332* the feed stream of each tray (Inlet);
     1333* the pump pressure difference;
     1334* the total pressure drop (dP) of the packing;
     1335* the heat supllied in reboiler and condenser;
     1336* the condenser vapor outlet flow (OutletV.F);
     1337* the reboiler liquid outlet flow (OutletL.F);
     1338* both splitter outlet flows OR one of the splitter outlet flows and the splitter frac.
     1339       
     1340== Initial Conditions ==
     1341* the stages temperature (OutletL.T);
     1342* the stages initial molar holdup;
     1343* (NoComps - 1) OutletL (OR OutletV) compositions for each stage;
     1344       
     1345* the condenser temperature (OutletL.T);
     1346* the condenser liquid level (Level);
     1347* (NoComps - 1) OutletL (OR OutletV) compositions;
     1348       
     1349* the reboiler temperature (OutletL.T);
     1350* the reboiler liquid level (Level);
     1351* (NoComps - 1) OutletL (OR OutletV) compositions.
     1352";
     1353       
    13221354        PARAMETERS
    13231355        VapourFlow as Switcher(Valid = ["on", "off"], Default = "on");
  • trunk/sample/stage_separators/sample_column.mso

    r499 r500  
    555555        reb.z = [0.16, 0.542, 0.013, 0.008, 0.277];
    556556
    557         sec.stage.deltaP = 0.001 * 'atm';
     557        sec.dP = 0.008 * 'atm';
    558558
    559559        SET
     
    631631        col.pump1.dP = 16 * 'kPa';
    632632
    633         col.stage.deltaP = 0.003 * 'atm';
     633        col.dP = 0.024 * 'atm';
    634634
    635635        SET
     
    823823        col.pump1.dP = 16 * 'kPa';
    824824       
    825         col.stage.deltaP = 0.003 * 'atm';
     825        col.dP = 0.024 * 'atm';
    826826
    827827        SET
Note: See TracChangeset for help on using the changeset viewer.