- Timestamp:
- Aug 31, 2007, 4:28:39 PM (15 years ago)
- Location:
- trunk/eml/heat_exchangers
- Files:
-
- 2 edited
-
HEX_Engine.mso (modified) (5 diffs)
-
PHE.mso (modified) (5 diffs)
Legend:
- Unmodified
- Added
- Removed
-
trunk/eml/heat_exchangers/HEX_Engine.mso
r355 r357 227 227 VARIABLES 228 228 229 DT0 as temp_delta (Brief="Temperature Difference at Inlet",Lower=1e-6 );230 DTL as temp_delta (Brief="Temperature Difference at Outlet",Lower=1e-6 );229 DT0 as temp_delta (Brief="Temperature Difference at Inlet",Lower=1e-6, Symbol ="\Delta T_0"); 230 DTL as temp_delta (Brief="Temperature Difference at Outlet",Lower=1e-6, Symbol ="\Delta T_L"); 231 231 LMTD as temp_delta (Brief="Logarithmic Mean Temperature Difference",Lower=1e-6); 232 232 Fc as positive (Brief="LMTD Correction Factor",Lower=0.1); … … 356 356 VARIABLES 357 357 358 Pdrop as press_delta (Brief="Pressure Drop",Default=0.01, Lower=1e-10,DisplayUnit='kPa' );358 Pdrop as press_delta (Brief="Pressure Drop",Default=0.01, Lower=1e-10,DisplayUnit='kPa', Symbol ="\Delta P}"); 359 359 fi as fricfactor (Brief="Friction Factor", Default=0.05, Lower=1e-10, Upper=2000); 360 360 Re as positive (Brief="Reynolds Number",Default=100,Lower=1); … … 408 408 WCp as positive (Brief="Stream Heat Capacity",Lower=1e-3,Default=1e3,Unit='W/K'); 409 409 hcoeff as heat_trans_coeff (Brief="Film Coefficient",Default=1,Lower=1e-12, Upper=1e6); 410 Gchannel as flux_mass (Brief ="Channel Mass Flux", Default=1, Lower=1e-6 );411 Gports as flux_mass (Brief ="Ports Mass Flux", Default=1, Lower=1e-6 );412 Phi as positive (Brief="Viscosity Correction",Default=1,Lower=1e-3 );410 Gchannel as flux_mass (Brief ="Channel Mass Flux", Default=1, Lower=1e-6, Symbol ="G^{channel}"); 411 Gports as flux_mass (Brief ="Ports Mass Flux", Default=1, Lower=1e-6, Symbol ="G^{ports}"); 412 Phi as positive (Brief="Viscosity Correction",Default=1,Lower=1e-3, Symbol="\phi"); 413 413 414 414 end … … 424 424 VARIABLES 425 425 426 DPchannel as press_delta (Brief="Channel Pressure Drop",Default=0.01, Lower=1e-10,DisplayUnit='kPa' );427 DPports as press_delta (Brief="Ports Pressure Drop",Default=0.01, Lower=1e-10,DisplayUnit='kPa' );428 Pdrop as press_delta (Brief="Total Pressure Drop",Default=0.01, Lower=1e-10,DisplayUnit='kPa' );426 DPchannel as press_delta (Brief="Channel Pressure Drop",Default=0.01, Lower=1e-10,DisplayUnit='kPa', Symbol ="\Delta P^{channel}"); 427 DPports as press_delta (Brief="Ports Pressure Drop",Default=0.01, Lower=1e-10,DisplayUnit='kPa', Symbol ="\Delta P^{ports}"); 428 Pdrop as press_delta (Brief="Total Pressure Drop",Default=0.01, Lower=1e-10,DisplayUnit='kPa', Symbol ="\Delta P"); 429 429 fi as fricfactor (Brief="Friction Factor", Default=0.05, Lower=1e-10, Upper=2000); 430 Vchannel as velocity (Brief="Stream Velocity in Channel",Lower=1e-8 );431 Vports as velocity (Brief="Stream Velocity in Ports",Lower=1e-8 );432 Npassage as Real (Brief="Number of Channels per Pass" );430 Vchannel as velocity (Brief="Stream Velocity in Channel",Lower=1e-8, Symbol ="V^{channel}"); 431 Vports as velocity (Brief="Stream Velocity in Ports",Lower=1e-8, Symbol ="V^{ports}"); 432 Npassage as Real (Brief="Number of Channels per Pass", Symbol ="N^{passage}"); 433 433 end 434 434 … … 443 443 VARIABLES 444 444 445 HeatTransfer as PHE_HeatTransfer (Brief="PHE Heat Transfer" );446 PressureDrop as PHE_PressureDrop (Brief="PHE Pressure Drop" );445 HeatTransfer as PHE_HeatTransfer (Brief="PHE Heat Transfer", Symbol = " "); 446 PressureDrop as PHE_PressureDrop (Brief="PHE Pressure Drop", Symbol = " "); 447 447 Properties as Physical_Properties (Brief="PHE Properties", Symbol = " "); 448 448 -
trunk/eml/heat_exchangers/PHE.mso
r355 r357 35 35 * Uniform distribution of flow through the channels of a pass. 36 36 37 == Specify == 38 * The Inlet streams: Hot and Cold; 39 40 == Setting The PHE Parameters == 41 *ChevronAngle 42 *Nplates 43 *NpassHot 44 *NpassCold 45 *Dports 46 *PhiFactor 47 *Lv 48 *Lw 49 *pitch 50 *pt 51 *Kwall 52 *Rfc 53 *Rfh 54 55 == Setting The PHE Option Parameters == 56 *Method: NTU or LMTD 57 *SideOne: cold or hot 58 37 59 == References == 38 60 … … 49 71 outer PP as Plugin (Brief="External Physical Properties", Type="PP"); 50 72 outer NComp as Integer (Brief="Number of Chemical Components"); 51 Pi as constant (Brief="Pi Number",Default=3.14159265 );73 Pi as constant (Brief="Pi Number",Default=3.14159265, Symbol = "\pi"); 52 74 Kp1(15) as constant (Brief="First constant in Kumar calculation for Pressure Drop"); 53 75 Kp2(15) as constant (Brief="Second constant in Kumar calculation for Pressure Drop"); … … 60 82 SideOne as Switcher (Brief="Fluid Alocation in the Side I - (The odd channels)",Valid=["hot","cold"],Default="hot"); 61 83 Nchannels as Integer (Brief="Total Number of Channels in The Whole Heat Exchanger"); 62 Nplates as Integer (Brief="Total Number of Plates in The Whole Heat Exchanger",Default=25 );63 NpassHot as Integer (Brief="Number of Passes for Hot Side" );64 NpassCold as Integer (Brief="Number of Passes for Cold Side" );65 Dports as length (Brief="Ports Diameter",Lower=1e-6 );66 Atotal as area (Brief="Total Effective Area",Lower=1e-6 );67 Aports as area (Brief="Port Opening Area of Plate",Lower=1e-6 );68 Achannel as area (Brief="Cross-Sectional Area for Channel Flow",Lower=1e-6 );84 Nplates as Integer (Brief="Total Number of Plates in The Whole Heat Exchanger",Default=25, Symbol ="N_{plates}"); 85 NpassHot as Integer (Brief="Number of Passes for Hot Side", Symbol ="Npasshot"); 86 NpassCold as Integer (Brief="Number of Passes for Cold Side", Symbol ="Npasscold"); 87 Dports as length (Brief="Ports Diameter",Lower=1e-6, Symbol ="D_{ports}"); 88 Atotal as area (Brief="Total Effective Area",Lower=1e-6, Symbol ="A_{total}"); 89 Aports as area (Brief="Port Opening Area of Plate",Lower=1e-6, Symbol ="A_{ports}"); 90 Achannel as area (Brief="Cross-Sectional Area for Channel Flow",Lower=1e-6, Symbol ="A_{channel}"); 69 91 Dh as length (Brief="Equivalent Diameter of Channel",Lower=1e-6); 70 92 Depth as length (Brief="Corrugation Depth",Lower=1e-6); 71 PhiFactor as Real (Brief="Enlargement Factor",Lower=1e-6 );93 PhiFactor as Real (Brief="Enlargement Factor",Lower=1e-6, Symbol ="\phi"); 72 94 Lp as length (Brief="Plate Vertical Distance between Port Centers",Lower=0.1); 73 95 Lpack as length (Brief="Compact Plate Pack Length",Lower=0.1); … … 77 99 pitch as length (Brief="Plate Pitch",Lower=0.1); 78 100 pt as length (Brief="Plate Thickness",Lower=0.1); 79 Kwall as conductivity (Brief="Plate Thermal Conductivity",Default=1.0 );101 Kwall as conductivity (Brief="Plate Thermal Conductivity",Default=1.0, Symbol ="K_{wall}"); 80 102 Rfh as positive (Brief="Hot Side Fouling Resistance",Unit='m^2*K/kW',Default=1e-6,Lower=0); 81 103 Rfc as positive (Brief="Cold Side Fouling Resistance",Unit='m^2*K/kW',Default=1e-6,Lower=0); … … 83 105 VARIABLES 84 106 85 in InletHot as stream (Brief="Inlet Hot Stream", PosX=0, PosY=0.7156, Symbol=" _{inHot}");86 in InletCold as stream (Brief="Inlet Cold Stream", PosX=1, PosY=0.7156, Symbol=" _{inCold}");87 out OutletHot as streamPH (Brief="Outlet Hot Stream", PosX=0, PosY=0.2793, Symbol=" _{outHot}");88 out OutletCold as streamPH (Brief="Outlet Cold Stream", PosX=1, PosY=0.2793, Symbol=" _{outCold}");107 in InletHot as stream (Brief="Inlet Hot Stream", PosX=0, PosY=0.7156, Symbol="^{inHot}"); 108 in InletCold as stream (Brief="Inlet Cold Stream", PosX=1, PosY=0.7156, Symbol="^{inCold}"); 109 out OutletHot as streamPH (Brief="Outlet Hot Stream", PosX=0, PosY=0.2793, Symbol="^{outHot}"); 110 out OutletCold as streamPH (Brief="Outlet Cold Stream", PosX=1, PosY=0.2793, Symbol="^{outCold}"); 89 111 90 112 HotSide as Main_PHE (Brief="Plate Heat Exchanger Hot Side", Symbol="_{hot}");
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