Changeset 884 for branches


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Timestamp:
Nov 12, 2009, 6:59:36 PM (13 years ago)
Author:
mamuller
Message:

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File:
1 edited

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

    r882 r884  
    514514end
    515515
     516
     517Model condenserSubcooled2
     518
     519ATTRIBUTES
     520        Pallete         = true;
     521        Icon            = "icon/CondenserSteady";
     522        Brief           = "Model of a  Steady State total condenser with specified temperature outlet conditions.";
     523        Info            =
     524"A simple model of a simple Steady State total condenser with specified temperature (or subcooling degree), with a real
     525calculation of the output stream enthalpy.
     526
     527== ASSUMPTIONS ==
     528* perfect mixing of both phases;
     529* saturated vapour at the Inlet.
     530* no thermodynamics equilibrium.
     531
     532== SET ==
     533* the fake Outlet temperature ;
     534* the pressure drop in the condenser;
     535
     536== SPECIFY ==
     537* the InletVapour stream;
     538* the subcooled temperature OR the the degree of subcooling.
     539
     540== OPTIONAL ==
     541* the condenser model has two control ports
     542** TI OutletLiquid Temperature Indicator;
     543** PI OutletLiquid Pressure Indicator;
     544";
     545
     546PARAMETERS
     547        outer PP        as Plugin       (Brief = "External Physical Properties", Type="PP");
     548        outer NComp as Integer  (Brief = "Number of Components");
     549
     550        Pdrop   as press_delta  (Brief="Pressure Drop in the condenser",Default=0, Symbol="\Delta _P");
     551        #Fake_Temperature               as temperature  (Brief="Fake temperature", Symbol = "T_{fake}");
     552
     553
     554VARIABLES
     555        in      InletVapour     as stream       (Brief="Vapour inlet stream", PosX=0.16, PosY=0, Symbol="_{in}^{Vapour}");
     556        out     OutletLiquid    as stream       (Brief="Liquid outlet stream", PosX=0.53, PosY=1, Symbol="_{out}^{Liquid}");
     557        #in     InletQ                  as power        (Brief="Heat Duty", PosX=1, PosY=0.08, Symbol="Q_{in}",Protected=true);
     558        SubcoolingDegree        as temp_delta (Brief="Subcooling Degree", Symbol = "\Delta _{sub}");
     559        T_sub                           as temperature (Brief="Condensate temperature (subcooled)", Symbol = "T_{sub}");       
     560        Tbubble                         as temperature (Brief="Bubble point at the condenser conditions", Protected = true, Symbol = "T_{b}");
     561        CondenserDuty           as power (Brief="Calculated condenser duty for desired subcooling", Protected = true, Symbol = "Q_{cond}");
     562
     563        out     TI as control_signal    (Brief="Temperature  Indicator of Condenser", Protected = true, PosX=0.50, PosY=0);
     564        out     PI as control_signal    (Brief="Pressure  Indicator of Condenser", Protected = true, PosX=0.32, PosY=0);
     565
     566EQUATIONS
     567
     568"Molar Flow Balance"
     569        InletVapour.F = OutletLiquid.F;
     570
     571"Molar Composition Balance"
     572        InletVapour.z = OutletLiquid.z;
     573
     574#"Energy Balance"
     575        #InletVapour.F*InletVapour.h  + InletQ = OutletLiquid.F*OutletLiquid.h;
     576
     577"Pressure Drop"
     578        OutletLiquid.P = InletVapour.P - Pdrop;
     579
     580"Subcooled Temperature"
     581        OutletLiquid.T = T_sub;
     582       
     583"Bubble Temperature"
     584        Tbubble = PP.BubbleT(OutletLiquid.P,OutletLiquid.z);
     585
     586"Degree of subcooling" 
     587        SubcoolingDegree = Tbubble - T_sub;
     588
     589"Liquid enthalpy"
     590        OutletLiquid.h = PP.LiquidEnthalpy(OutletLiquid.T, OutletLiquid.P, OutletLiquid.z);
     591       
     592"Condenser Duty"
     593        CondenserDuty = OutletLiquid.F*OutletLiquid.h - InletVapour.F*InletVapour.h;
     594       
     595"Vapourisation Fraction"
     596        OutletLiquid.v = 0;
     597       
     598"Temperature indicator"
     599        TI * 'K' = OutletLiquid.T;
     600
     601"Pressure indicator"
     602        PI * 'atm' = OutletLiquid.P;
     603
     604end
     605
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