source: branches/gui/eml/pressure_changers/turbine.mso @ 567

Last change on this file since 567 was 554, checked in by Rafael de Pelegrini Soares, 14 years ago

Added a new branch for the new gui

  • Property svn:keywords set to Id
File size: 3.8 KB
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1#*-------------------------------------------------------------------
2* EMSO Model Library (EML) Copyright (C) 2004 - 2007 ALSOC.
3*
4* This LIBRARY is free software; you can distribute it and/or modify
5* it under the therms of the ALSOC FREE LICENSE as available at
6* http://www.enq.ufrgs.br/alsoc.
7*
8* EMSO Copyright (C) 2004 - 2007 ALSOC, original code
9* from http://www.rps.eng.br Copyright (C) 2002-2004.
10* All rights reserved.
11*
12* EMSO is distributed under the therms of the ALSOC LICENSE as
13* available at http://www.enq.ufrgs.br/alsoc.
14*
15*----------------------------------------------------------------------
16* Authors: Rafael de Pelegrini Soares
17*          Andrey Copat, Estefane S. Horn, Marcos L. Alencastro
18* $Id: turbine.mso 554 2008-07-17 17:08:20Z rafael $
19*--------------------------------------------------------------------*#
20
21using "streams";
22
23Model HidraulicTurbine
24        ATTRIBUTES
25        Pallete         = true;
26        Icon            = "icon/HidraulicTurbine";
27        Brief           = "Model of a Hidraulic Turbine.";
28        Info            =
29"== Assumptions ==
30* Steady State;
31* Only Liquid;
32* Adiabatic;
33* Isentropic.
34       
35== Specify ==
36* the inlet stream;
37* the Pressure Increase (Pdiff) OR the outlet pressure (Outlet.P);
38* the Turbine efficiency (Eff);
39* the Brake efficiency (Meff);
40* the Volumetric expansivity (Beta).
41";
42       
43        PARAMETERS
44outer NComp     as Integer                      (Brief = "Number of chemical components", Lower = 1);
45outer PP                as Plugin                       (Brief = "External Physical Properties", Type="PP");
46        Mw(NComp)       as molweight            (Brief = "Molar Weight");
47       
48        VARIABLES
49        Eff     as efficiency           (Brief = "Turbine efficiency");
50        Meff    as efficiency           (Brief = "Brake efficiency");
51        Beta    as positive             (Brief = "Volumetric expansivity", Unit = '1/K');
52        Head    as head                         (Brief = "Head Developed");
53        FPower  as power                        (Brief = "Fluid Power");
54        BPower  as power                        (Brief = "Brake Power");
55        Pratio  as positive                     (Brief = "Pressure Ratio");
56        Pdrop   as press_delta          (Brief = "Pressure Drop", DisplayUnit = 'kPa', Symbol ="\Delta P");
57        Mwm     as molweight            (Brief = "Mixture Molar Weight");
58        rho             as dens_mass            (Brief = "Specific Mass");
59        Cp              as cp_mol                       (Brief = "Heat Capacity");
60in      Inlet   as stream                       (Brief = "Inlet stream", PosX=0, PosY=0.5086, Symbol="_{in}");
61out     Outlet  as stream                       (Brief = "Outlet stream", PosX=1, PosY=0.5022, Symbol="_{out}");
62
63        SET
64        Mw = PP.MolecularWeight();     
65       
66        EQUATIONS
67        #Mixtures Properties
68        "Calculate Mwm for Inlet Mixture"
69        Mwm = sum(Mw*Inlet.z);
70
71        "Calculate rho using a External Physical Properties Routine"
72        rho = PP.LiquidDensity(Inlet.T,Inlet.P,Inlet.z);
73       
74        "Calculate Outlet Vapour Fraction"
75        Outlet.v = PP.VapourFraction(Outlet.T, Outlet.P, Outlet.z);
76       
77        "Calculate Cp Using a External Physical Properties Routine"
78        Cp = PP.LiquidCp(Inlet.T,Inlet.P,Inlet.z);
79       
80        "Pressure Ratio"
81        Outlet.P = Inlet.P * Pratio;
82
83        "Pressure Drop"
84        Outlet.P  = Inlet.P - Pdrop;
85
86        "Calculate Fluid Power"
87        FPower * rho = -Pdrop * Inlet.F * Mwm;
88
89        "Calculate Brake Power"
90        BPower = FPower * Eff;
91       
92        "Calculate Outlet Temperature"
93        (Outlet.T - Inlet.T) * rho * Cp = (Outlet.h - Inlet.h) * rho
94        + Pdrop * Mwm * (1-Beta*Inlet.T);
95       
96        "Calculate Outlet Enthalpy"
97        (Outlet.h - Inlet.h) * rho =  -Pdrop * Mwm;
98       
99        "Molar Balance"
100        Outlet.F = Inlet.F;
101       
102        "Calculate Outlet Composition"
103        Outlet.z = Inlet.z;
104
105        "Calculate Head"
106        Head = Outlet.h - Inlet.h;
107end
108
109
110Model HidraulicTurbineGenerator as HidraulicTurbine
111        ATTRIBUTES
112        Pallete         = true;
113        Icon            = "icon/HidraulicTurbine";
114        Brief           = "Model of a Hidraulic Turbine.";
115        Info            =
116"== Assumptions ==
117* Steady State;
118* Only Liquid;
119* Adiabatic;
120* Isentropic.
121       
122== Specify ==
123* the inlet stream;
124* the Pressure Increase (Pdiff) OR the outlet pressure (Outlet.P);
125* the Turbine efficiency (Eff);
126* the Brake efficiency (Meff);
127* the Volumetric expansivity (Beta).
128";
129       
130        VARIABLES
131        EPower  as power                        (Brief = "Eletrical Potency");
132       
133        EQUATIONS
134        "Calculate Eletric Power"
135        EPower = BPower * Meff;
136end
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