Changeset 558 for branches/gui/eml/pressure_changers
- Timestamp:
- Jul 21, 2008, 5:41:41 PM (15 years ago)
- File:
-
- 1 edited
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branches/gui/eml/pressure_changers/valve.mso
r372 r558 212 212 end 213 213 end 214 215 216 Model valve_flow 217 ATTRIBUTES 218 Pallete = true; 219 Icon = "icon/Valve"; 220 Brief = "Model of a very simple valve - used in distillation column models."; 221 Info = 222 "== Assumptions == 223 * no flashing liquid in the valve; 224 * the flow in the valve is adiabatic; 225 * dynamics in the valve are neglected; 226 * linear flow type. 227 228 == Specify == 229 * the inlet stream 230 * the plug position (x) OR outlet temperature (Outlet.T) OR outlet pressure (Outlet.P) 231 232 OR 233 234 * the inlet stream excluding its flow (Inlet.F) 235 * the outlet pressure (Outlet.P) OR outlet flow (Outlet.F) 236 * the plug position (x) 237 "; 238 239 PARAMETERS 240 outer PP as Plugin(Type="PP"); 241 outer NComp as Integer; 242 243 MinFlow as flow_mol(Default=0); 244 MaxFlow as flow_mol(Default=1000); 245 246 VARIABLES 247 in Inlet as stream (Brief = "Inlet stream", PosX=0, PosY=0.7365, Symbol="_{in}"); 248 out Outlet as streamPH (Brief = "Outlet stream", PosX=1, PosY=0.7365, Symbol="_{out}"); 249 in FlowFraction as fraction (Brief="Flow Signal", PosX=0.5, PosY=0); 250 251 EQUATIONS 252 "Overall Molar Balance" 253 Inlet.F = Outlet.F; 254 255 "Componente Molar Balance" 256 Inlet.z = Outlet.z; 257 258 "Energy Balance" 259 Inlet.h = Outlet.h; 260 261 "Pressure" 262 Outlet.P = Inlet.P; 263 264 "Flow" 265 Outlet.F = MinFlow + FlowFraction*(MaxFlow-MinFlow); 266 end 267
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