source: branches/newlanguage/eml/streams.mso @ 147

Last change on this file since 147 was 147, checked in by gerson bicca, 16 years ago

testing the new language

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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* Model of basic streams
17*----------------------------------------------------------------------
18* Author: Paula B. Staudt and Rafael de P. Soares
19* $Id: streams.mso 147 2007-01-31 19:02:46Z bicca $
20*---------------------------------------------------------------------*#
21
22using "types";
23
24Model stream
25        ATTRIBUTES
26        Pallete = false;
27        Brief = "General Material Stream";
28        Info =
29        "This is the basic building block for the EML models.
30        Every model should have input and output streams derived
31        from this model.";
32       
33        PARAMETERS
34        outer NComp as Integer (Brief = "Number of chemical components", Lower = 1);
35
36        VARIABLES
37        F as flow_mol;
38        T as temperature;
39        P as pressure;
40        z(NComp) as fraction(Brief = "Overall Molar Fraction");
41        h as enth_mol;
42        v as fraction(Brief = "Vapourisation fraction");
43end
44
45Model liquid_stream as stream
46        ATTRIBUTES
47        Pallete = false;
48        Brief = "Liquid Material Stream";
49        Info =
50        "Model for liquid material streams.
51        This model should be used only when the phase of the stream
52        is known ''a priori''.";
53
54        PARAMETERS
55        outer PP as Plugin(Brief = "External Physical Properties", Type="PP");
56       
57        EQUATIONS
58        "Liquid Enthalpy"
59        h = PP.LiquidEnthalpy(T, P, z);
60        "Liquid stream"
61        v = 0;
62end
63
64Model vapour_stream as stream
65        ATTRIBUTES
66        Pallete = false;
67        Brief = "Vapour Material Stream";
68        Info =
69        "Model for vapour material streams.
70        This model should be used only when the phase of the stream
71        is known ''a priori''.";
72
73        PARAMETERS
74        outer PP as Plugin(Brief = "External Physical Properties", Type="PP");
75       
76        EQUATIONS
77        "Vapour Enthalpy"
78        h = PP.VapourEnthalpy(T, P, z);
79        "Vapour stream"
80        v = 1;
81end
82
83Model streamPH as stream
84        PARAMETERS
85        outer PP as Plugin(Brief = "External Physical Properties", Type="PP");
86        outer NComp as Integer (Brief = "Number of chemical components", Lower = 1);
87       
88        VARIABLES
89        x(NComp) as fraction(Brief = "Liquid Molar Fraction");
90        y(NComp) as fraction(Brief = "Vapour Molar Fraction");
91       
92        EQUATIONS
93        "Flash Calculation"
94        [v, x, y] = PP.FlashPH(P, h, z);
95        "Enthalpy"
96        h = (1-v)*PP.LiquidEnthalpy(T, P, x) +
97                v*PP.VapourEnthalpy(T, P, y);
98end
99
100Model source
101        ATTRIBUTES
102        Info =
103        "Material stream source.
104        This model should be used for boundary streams.
105        Usually these streams are known and come from another process
106        units.";
107
108        PARAMETERS
109        outer PP                        as Plugin               (Brief = "External Physical Properties", Type="PP");
110        outer NComp             as Integer              (Brief = "Number of chemical components", Lower = 1);
111                        M(NComp)  as molweight  (Brief="Component Mol Weight");
112       
113        SET
114
115        M   = PP.MolecularWeight();
116
117        VARIABLES
118        out Outlet as stream;
119        x(NComp) as fraction(Brief = "Liquid Molar Fraction");
120        y(NComp) as fraction(Brief = "Vapour Molar Fraction");
121        hl as enth_mol;
122        hv as enth_mol;
123        zmass(NComp)    as fraction                     (Brief = "Mass Fraction");
124        Mw                                      as molweight            (Brief="Average Mol Weight");
125        vm                                      as volume_mol   (Brief="Molar Volume");
126        rho                                     as dens_mass            (Brief="Stream Density");
127        Fw                                      as flow_mass            (Brief="Stream Mass Flow");
128        Fvol                            as flow_vol         (Brief = "Volumetric Flow");
129       
130        EQUATIONS
131        "Flash Calculation"
132        [Outlet.v, x, y] = PP.Flash(Outlet.T, Outlet.P, Outlet.z);
133       
134        "Overall Enthalpy"
135        Outlet.h = (1-Outlet.v)*PP.LiquidEnthalpy(Outlet.T, Outlet.P, x) +
136                Outlet.v*PP.VapourEnthalpy(Outlet.T, Outlet.P, y);
137       
138        hl = PP.LiquidEnthalpy(Outlet.T, Outlet.P, x);
139        hv = PP.VapourEnthalpy(Outlet.T, Outlet.P, y);
140       
141        "Average Molecular Weight"
142        Mw = sum(M*Outlet.z);
143
144        "Mass Density"
145        rho =   (1-Outlet.v)*PP.LiquidDensity(Outlet.T,Outlet.P,x) + Outlet.v*PP.VapourDensity(Outlet.T,Outlet.P,y);
146
147        "Flow Mass"
148        Fw      =  Mw*Outlet.F;
149
150        "Molar Volume"
151        vm = (1-Outlet.v)*PP.LiquidVolume(Outlet.T, Outlet.P, x) + Outlet.v*PP.VapourVolume(Outlet.T,Outlet.P,y);
152       
153        "Volumetric Flow"
154        Fvol = Outlet.F*vm ;
155       
156"Mass Fraction"
157        zmass = M*Outlet.z / Mw;       
158       
159end
160
161Model sink
162        ATTRIBUTES
163        Info =
164        "Material stream sink.
165        This model should be used for boundary streams.";
166
167        PARAMETERS
168        outer PP                        as Plugin               (Brief = "External Physical Properties", Type="PP");
169        outer NComp             as Integer              (Brief = "Number of chemical components", Lower = 1);
170                        M(NComp)  as molweight  (Brief="Component Mol Weight");
171       
172        SET
173
174        M   = PP.MolecularWeight();
175       
176        VARIABLES
177        in Inlet as stream;
178        v as fraction;
179        x(NComp)        as fraction                     (Brief = "Liquid Molar Fraction");
180        y(NComp)        as fraction                     (Brief = "Vapour Molar Fraction");
181        zmass(NComp)    as fraction     (Brief = "Mass Fraction");
182        Mw                      as molweight            (Brief="Average Mol Weight");
183        vm                      as volume_mol   (Brief="Molar Volume");
184        rho                     as dens_mass            (Brief="Stream Density");
185        Fw                      as flow_mass            (Brief="Stream Mass Flow");
186        Fvol          as flow_vol          (Brief = "Volumetric Flow");
187       
188        EQUATIONS
189        "Flash Calculation"
190        [v, x, y] = PP.FlashPH(Inlet.P, Inlet.h, Inlet.z);
191       
192        "Average Molecular Weight"
193        Mw = sum(M*Inlet.z);
194
195        "Mass Density"
196        rho =   (1-v)*PP.LiquidDensity(Inlet.T,Inlet.P,x) + v*PP.VapourDensity(Inlet.T,Inlet.P,y);
197
198        "Flow Mass"
199        Fw      =  Mw*Inlet.F;
200
201        "Molar Volume"
202        vm = (1-v)*PP.LiquidVolume(Inlet.T, Inlet.P, x) + v*PP.VapourVolume(Inlet.T,Inlet.P,y);
203       
204        "Volumetric Flow"
205        Fvol = Inlet.F*vm ;
206       
207        "Mass Fraction"
208        zmass = M*Inlet.z / Mw;
209       
210end
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