Ignore:
Timestamp:
Aug 3, 2009, 6:15:55 PM (13 years ago)
Author:
gerson bicca
Message:

updates

File:
1 edited

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  • branches/gui/eml/stage_separators/reboiler.mso

    r806 r808  
    3333== SET ==
    3434* the pressure drop in the reboiler;
     35* the FlowConstant that relates the Flow through the reboiler and the heat duty
     36**      Flow^3 = FlowConstant*InletQ
    3537
    3638== SPECIFY ==
     
    110112== SET ==
    111113* the pressure drop in the reboiler;
     114* the FlowConstant that relates the Flow through the reboiler and the heat duty
     115**      Flow^3 = FlowConstant*InletQ
    112116
    113117== SPECIFY ==
     
    173177        Brief           = "Model of a  Steady State reboiler with fake calculation of outlet conditions.";
    174178        Info            =
    175 "Model of a  Steady State reboiler with fake calculation of
    176 vaporisation fraction and output temperature, but with a real
     179"Model of a  Steady State reboiler with fake calculation of vaporisation fraction and output temperature, but with a real
    177180calculation of the output stream enthalpy.
    178 ";
     181
     182== ASSUMPTIONS ==
     183* perfect mixing of both phases;
     184* no thermodynamics equilibrium;
     185
     186== SET ==
     187* the fake Outlet temperature ;
     188* the fake outlet vapour fraction;
     189* the pressure drop in the reboiler;
     190* the FlowConstant that relates the Flow through the reboiler and the heat duty
     191**      Flow^3 = FlowConstant*InletQ
     192
     193== SPECIFY ==
     194* the InletLiquid stream;
     195* the InletQ (the model requires an energy stream, also you can use a controller for setting the heat duty using the heat_flow model)
     196;
     197
     198== OPTIONAL ==
     199* the reboiler model has two control ports
     200** TI OutletVapour Temperature Indicator;
     201** PI OutletVapour Pressure Indicator;
     202";     
     203
    179204       
    180205PARAMETERS
    181206        outer PP        as Plugin(Brief = "External Physical Properties", Type="PP");
    182207        outer NComp as Integer;
     208        Fake_Temperature                as temperature  (Brief="Fake temperature", Symbol = "T_{fake}");
     209        Fake_Vfrac              as fraction     (Brief="Fake vapour fraction", Symbol = "v_{fake}");
    183210        Pdrop           as press_delta  (Brief="Pressure Drop in the reboiler", Symbol = "\Delta P");
    184211        FlowConstant                    as Real (Brief = "Flow Constant");
     
    211238        OutletVapour.P = InletLiquid.P - Pdrop ;
    212239
    213 #"Fake Vapourisation Fraction"
    214 #       OutletVapour.v = 0.6;
     240"Fake Vapourisation Fraction"
     241        OutletVapour.v = Fake_Vfrac;
    215242
    216243"Fake output temperature"
    217         OutletVapour.T = (58+273)*'K';
    218 
    219         #OutletVapour.v = PP.VapourFraction(OutletVapour.T, OutletVapour.P, OutletVapour.z);
    220         #OutletVapour.h = OutletVapor.v * PP.VapourEnthalpy(OutletVapour.T, OutletVapour.P, OutletVapour.z)
    221         #       +  (1-OutletVapor.v) * PP.LiquidEnthalpy(OutletVapour.T, OutletVapour.P, OutletVapour.z)
     244        OutletVapour.T = Fake_Temperature;
    222245
    223246"Temperature indicator"
     
    355378        Info            =
    356379"== ASSUMPTIONS ==
    357 
    358380* perfect mixing of both phases;
    359381* thermodynamics equilibrium;
     
    361383       
    362384== SPECIFY ==
    363 
    364385* the InletLiquid stream;
    365386* the outlet flows: OutletVapour.F and OutletLiquid.F;
     
    373394
    374395== INITIAL CONDITIONS ==
    375 
    376396* Initial_Temperature :  the reboiler temperature (OutletLiquid.T);
    377397* Initial_Level : the reboiler liquid level (Level);
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