Ignore:
Timestamp:
Jul 25, 2008, 11:18:50 AM (15 years ago)
Author:
Rafael de Pelegrini Soares
Message:

Updated the models to work with some language constraints

File:
1 edited

Legend:

Unmodified
Added
Removed

  • branches/gui/eml/heat_exchangers/HeatExchangerDetailed.mso

    r492 r574  
    470470       
    471471"Shell Side Pressure Drop Friction Factor"
    472         Shell.PressureDrop.FricFactor=48*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^-1;
     472        Shell.PressureDrop.FricFactor=48*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^(-1);
    473473       
    474474        when Shell.HeatTransfer.Re > 10 switchto "range2";
    … …  
    477477       
    478478"Ji Factor"
    479         Ji =1.36*((1.33*Tubes.TubeOD/Tubes.TubePitch)^a)*Shell.HeatTransfer.Re^-0.657;
     479        Ji =1.36*((1.33*Tubes.TubeOD/Tubes.TubePitch)^a)*Shell.HeatTransfer.Re^(-0.657);
    480480       
    481481"Shell Side Pressure Drop Friction Factor"
    482         Shell.PressureDrop.FricFactor=45.10*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^-0.973;
     482        Shell.PressureDrop.FricFactor=45.10*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^(-0.973);
    483483       
    484484        when Shell.HeatTransfer.Re > 100 switchto "range3";
    … …  
    487487
    488488"Ji Factor"
    489         Ji =0.593*((1.33*Tubes.TubeOD/Tubes.TubePitch)^a)*Shell.HeatTransfer.Re^-0.477;
     489        Ji =0.593*((1.33*Tubes.TubeOD/Tubes.TubePitch)^a)*Shell.HeatTransfer.Re^(-0.477);
    490490       
    491491"Shell Side Pressure Drop Friction Factor"
    492         Shell.PressureDrop.FricFactor=4.570*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^-0.476;
     492        Shell.PressureDrop.FricFactor=4.570*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^(-0.476);
    493493       
    494494        when Shell.HeatTransfer.Re > 1000 switchto "range4";
    … …  
    497497
    498498"Ji Factor"
    499         Ji =0.321*((1.33*Tubes.TubeOD/Tubes.TubePitch)^a)*Shell.HeatTransfer.Re^-0.388;
     499        Ji =0.321*((1.33*Tubes.TubeOD/Tubes.TubePitch)^a)*Shell.HeatTransfer.Re^(-0.388);
    500500       
    501501"Shell Side Pressure Drop Friction Factor"
    502         Shell.PressureDrop.FricFactor=0.486*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^-0.152;
     502        Shell.PressureDrop.FricFactor=0.486*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^(-0.152);
    503503
    504504        when Shell.HeatTransfer.Re > 10000 switchto "range5";
    … …  
    507507
    508508"Ji Factor"
    509         Ji =0.321*((1.33*Tubes.TubeOD/Tubes.TubePitch)^a)*Shell.HeatTransfer.Re^-0.388;
     509        Ji =0.321*((1.33*Tubes.TubeOD/Tubes.TubePitch)^a)*Shell.HeatTransfer.Re^(-0.388);
    510510
    511511"Shell Side Pressure Drop Friction Factor"
    512         Shell.PressureDrop.FricFactor=0.372*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^-0.123;
     512        Shell.PressureDrop.FricFactor=0.372*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^(-0.123);
    513513       
    514514        when Shell.HeatTransfer.Re < 10000 switchto "range4";
    … …  
    550550
    551551"Shell Side Pressure Drop Friction Factor"
    552         Shell.PressureDrop.FricFactor=32*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^-1;
     552        Shell.PressureDrop.FricFactor=32*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^(-1);
    553553       
    554554        when Shell.HeatTransfer.Re > 10 switchto "range2";
    … …  
    560560
    561561"Shell Side Pressure Drop Friction Factor"
    562         Shell.PressureDrop.FricFactor=26.20*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^-0.913;
     562        Shell.PressureDrop.FricFactor=26.20*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^(-0.913);
    563563       
    564564        when Shell.HeatTransfer.Re > 100 switchto "range3";
    … …  
    570570
    571571"Shell Side Pressure Drop Friction Factor"
    572         Shell.PressureDrop.FricFactor=3.50*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^-0.476;
     572        Shell.PressureDrop.FricFactor=3.50*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^(-0.476);
    573573       
    574574        when Shell.HeatTransfer.Re > 1000 switchto "range4";
    … …  
    577577       
    578578"Ji Factor"
    579         Ji =0.370*((1.33*Tubes.TubeOD/Tubes.TubePitch)^a)*Shell.HeatTransfer.Re^-0.396;
     579        Ji =0.370*((1.33*Tubes.TubeOD/Tubes.TubePitch)^a)*Shell.HeatTransfer.Re^(-0.396);
    580580       
    581581"Shell Side Pressure Drop Friction Factor"
    582         Shell.PressureDrop.FricFactor=0.333*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^-0.136;
     582        Shell.PressureDrop.FricFactor=0.333*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^(-0.136);
    583583
    584584        when Shell.HeatTransfer.Re > 10000 switchto "range5";
    … …  
    587587
    588588"Ji Factor"
    589         Ji =0.370*((1.33*Tubes.TubeOD/Tubes.TubePitch)^a)*Shell.HeatTransfer.Re^-0.396;
     589        Ji =0.370*((1.33*Tubes.TubeOD/Tubes.TubePitch)^a)*Shell.HeatTransfer.Re^(-0.396);
    590590       
    591591"Shell Side Pressure Drop Friction Factor"
    592         Shell.PressureDrop.FricFactor=0.303*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^-0.126;
     592        Shell.PressureDrop.FricFactor=0.303*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^(-0.126);
    593593       
    594594        when Shell.HeatTransfer.Re < 10000 switchto "range4";
    … …  
    627627
    628628"Ji Factor"
    629         Ji =0.970*((1.33*Tubes.TubeOD/Tubes.TubePitch)^a)*Shell.HeatTransfer.Re^-0.667;
     629        Ji =0.970*((1.33*Tubes.TubeOD/Tubes.TubePitch)^a)*Shell.HeatTransfer.Re^(-0.667);
    630630       
    631631"Shell Side Pressure Drop Friction Factor"     
    632         Shell.PressureDrop.FricFactor=35*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^-1;
     632        Shell.PressureDrop.FricFactor=35*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^(-1);
    633633
    634634        when Shell.HeatTransfer.Re > 10 switchto "range2";
    … …  
    637637
    638638"Ji Factor"
    639         Ji =0.900*((1.33*Tubes.TubeOD/Tubes.TubePitch)^a)*Shell.HeatTransfer.Re^-0.631;
     639        Ji =0.900*((1.33*Tubes.TubeOD/Tubes.TubePitch)^a)*Shell.HeatTransfer.Re^(-0.631);
    640640
    641641"Shell Side Pressure Drop Friction Factor"     
    642         Shell.PressureDrop.FricFactor=32.10*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^-0.963;
     642        Shell.PressureDrop.FricFactor=32.10*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^(-0.963);
    643643
    644644        when Shell.HeatTransfer.Re > 100 switchto "range3";
    … …  
    647647
    648648"Ji Factor"
    649         Ji =0.408*((1.33*Tubes.TubeOD/Tubes.TubePitch)^a)*Shell.HeatTransfer.Re^-0.460;
     649        Ji =0.408*((1.33*Tubes.TubeOD/Tubes.TubePitch)^a)*Shell.HeatTransfer.Re^(-0.460);
    650650
    651651"Shell Side Pressure Drop Friction Factor"     
    652         Shell.PressureDrop.FricFactor=6.090*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^-0.602;
     652        Shell.PressureDrop.FricFactor=6.090*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^(-0.602);
    653653
    654654        when Shell.HeatTransfer.Re > 1000 switchto "range4";
    … …  
    657657       
    658658"Ji Factor"
    659         Ji =0.107*((1.33*Tubes.TubeOD/Tubes.TubePitch)^a)*Shell.HeatTransfer.Re^-0.266;
     659        Ji =0.107*((1.33*Tubes.TubeOD/Tubes.TubePitch)^a)*Shell.HeatTransfer.Re^(-0.266);
    660660
    661661"Shell Side Pressure Drop Friction Factor"     
    … …  
    667667       
    668668"Ji Factor"
    669         Ji =0.370*((1.33*Tubes.TubeOD/Tubes.TubePitch)^a)*Shell.HeatTransfer.Re^-0.395;
     669        Ji =0.370*((1.33*Tubes.TubeOD/Tubes.TubePitch)^a)*Shell.HeatTransfer.Re^(-0.395);
    670670
    671671"Shell Side Pressure Drop Friction Factor"     
    672         Shell.PressureDrop.FricFactor=0.391*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^-0.148;
     672        Shell.PressureDrop.FricFactor=0.391*((1.33*Tubes.TubeOD/Tubes.TubePitch)^b)*Shell.HeatTransfer.Re^(-0.148);
    673673
    674674        when Shell.HeatTransfer.Re < 10000 switchto "range4";
    … …  
    900900       
    901901"Effectiveness Correction for 2 pass shell side"
    902         Method.Eft1 = 2*(1+Method.Cr+sqrt(1+Method.Cr^2)*((1+exp(-Method.NTU*sqrt(1+Method.Cr^2)))/(1-exp(-Method.NTU*sqrt(1+Method.Cr^2)))) )^-1;
     902        Method.Eft1 = 2*(1+Method.Cr+sqrt(1+Method.Cr^2)*((1+exp(-Method.NTU*sqrt(1+Method.Cr^2)))/(1-exp(-Method.NTU*sqrt(1+Method.Cr^2)))) )^(-1);
    903903
    904904"TEMA F Shell Effectiveness"
    905         Method.Eft = ( ((1-Method.Eft1*Method.Cr)/(1-Method.Eft1))^2 -1  )*( ((1-Method.Eft1*Method.Cr)/(1-Method.Eft1))^2 - Method.Cr )^-1;
     905        Method.Eft = ( ((1-Method.Eft1*Method.Cr)/(1-Method.Eft1))^2 -1  )*( ((1-Method.Eft1*Method.Cr)/(1-Method.Eft1))^2 - Method.Cr )^(-1);
    906906
    907907        case "Eshell":
    908908       
    909909"TEMA E Shell Effectiveness"
    910         Method.Eft = 2*(1+Method.Cr+sqrt(1+Method.Cr^2)*((1+exp(-Method.NTU*sqrt(1+Method.Cr^2)))/(1-exp(-Method.NTU*sqrt(1+Method.Cr^2)))) )^-1;
     910        Method.Eft = 2*(1+Method.Cr+sqrt(1+Method.Cr^2)*((1+exp(-Method.NTU*sqrt(1+Method.Cr^2)))/(1-exp(-Method.NTU*sqrt(1+Method.Cr^2)))) )^(-1);
    911911#       Method.Eft = 1;
    912912
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