Changeset 253 for trunk

Timestamp:

May 4, 2007, 8:04:00 PM (16 years ago)

Author:

gerson bicca

Message:

added a shortcut model for plate and frame heat exchanger

Location:

trunk

Files:

• eml/heat_exchangers/HEX_Engine.mso (modified) (1 diff)
• eml/heat_exchangers/PHE.mso (added)
• sample/heat_exchangers/GuessPHE.rlt (added)
• sample/heat_exchangers/Sample_PHE.mso (added)

trunk/eml/heat_exchangers/HEX_Engine.mso

@@ -395 +395 @@
 
 end
+
+Model PHE_HeatTransfer
+        
+ATTRIBUTES
+        Pallete = false;
+        Brief = "write some information";
+        Info =
+        "write some information";
+        
+VARIABLES
+
+Re                              as positive                                     (Brief="Reynolds Number",Default=100,Lower=1);
+PR                              as positive                                     (Brief="Prandtl Number",Default=0.5,Lower=1e-8);
+NTU                     as positive                                     (Brief="Number of Units Transference",Default=0.05,Lower=1e-10);
+WCp                     as positive                                     (Brief="Stream Heat Capacity",Lower=1e-3,Default=1e3,Unit='W/K');
+hcoeff          as heat_trans_coeff     (Brief="Film Coefficient",Default=1,Lower=1e-12, Upper=1e6);
+Gchannel        as flux_mass                            (Brief ="Channel Mass Flux", Default=1, Lower=1e-6);
+Gports          as flux_mass                            (Brief ="Ports Mass Flux", Default=1, Lower=1e-6);
+Phi                     as positive                                     (Brief="Viscosity Correction",Default=1,Lower=1e-3);
+
+end
+
+Model PHE_PressureDrop
+        
+ATTRIBUTES
+        Pallete = false;
+        Brief = "write some information";
+        Info =
+        "write some information";
+        
+VARIABLES
+
+DPchannel                       as press_delta  (Brief="Channel Pressure Drop",Default=0.01, Lower=1e-10,DisplayUnit='kPa');
+DPports                         as press_delta  (Brief="Ports Pressure Drop",Default=0.01, Lower=1e-10,DisplayUnit='kPa');
+Pdrop                           as press_delta  (Brief="Total Pressure Drop",Default=0.01, Lower=1e-10,DisplayUnit='kPa');
+fi                                      as fricfactor           (Brief="Friction Factor", Default=0.05, Lower=1e-10, Upper=2000);
+Vchannel                        as velocity             (Brief="Stream Velocity in Channel",Lower=1e-8);
+Vports                          as velocity             (Brief="Stream Velocity in Ports",Lower=1e-8);
+Npassage                        as Real                                 (Brief="Number of  Channels per Pass");
+end
+
+Model Main_PHE
+        
+ATTRIBUTES
+        Pallete = false;
+        Brief = "write some information";
+        Info =
+        "write some information";
+        
+VARIABLES
+
+HeatTransfer            as PHE_HeatTransfer             (Brief="PHE Heat Transfer");
+PressureDrop    as PHE_PressureDrop             (Brief="PHE Pressure Drop");
+Properties              as Physical_Properties          (Brief="PHE Properties");
+
+end
+
+Model Thermal_PHE as LMTD_Basic
+
+ATTRIBUTES
+        Pallete = false;
+        Brief = "write some information";
+        Info =
+        "write some information";
+        
+VARIABLES
+Cr      as positive                                     (Brief="Heat Capacity Ratio",Default=0.5,Lower=1e-6);
+Cmin    as positive                                     (Brief="Minimum Heat Capacity",Lower=1e-10,Default=1e3,Unit='W/K');
+Cmax    as positive                                     (Brief="Maximum Heat Capacity",Lower=1e-10,Default=1e3,Unit='W/K');
+NTU     as positive                                     (Brief="Number of Units Transference",Default=0.05,Lower=1e-10);
+Eft             as positive                             (Brief="Effectiveness",Default=0.5,Lower=1e-8,Upper=1);
+Q                       as power                                        (Brief="Heat Transfer", Default=7000, Lower=1e-6, Upper=1e10);
+Uc              as heat_trans_coeff     (Brief="Overall Heat Transfer Coefficient Clean",Default=1,Lower=1e-6,Upper=1e10);
+Ud              as heat_trans_coeff     (Brief="Overall Heat Transfer Coefficient Dirty",Default=1,Lower=1e-6,Upper=1e10);
+end