modelHeatExchangerWallWithLosses
Heat exchanger wall
Information
## Copyright © EDF 2002 - 2026 ## ThermoSysPro Version 4.2
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Units.SI.Length | L | 10 | Tube length |
| Units.SI.Diameter | D | 0.03 | Internal tube diameter |
| Units.SI.Diameter | D_rec | 24 | receiver diameter |
| Units.SI.Diameter | L_rec | 10 | receiver height (characteristic length |
| Units.SI.Thickness | e | 2.e-3 | Wall thickness |
| Real | Sc | 0.5 | Decrease factor of the external heat exchange surface for Solar Receiver or Boiler |
| Units.SI.ThermalConductivity | lambda | 21 | Thermal conductivity of the pipes |
| Real | Eps | 0.6 | Tube emissivity |
| Units.SI.Thickness | e_ins | 0.1 | Insulation thickness |
| Units.SI.ThermalConductivity | lambda_ins | 0.035 | Equivalent thermal conductivity of Insulation + pipes |
| Units.SI.Acceleration | g | Modelica.Constants.g_n | Gravity constant |
| Real | hcCorr1 | 1.00 | Corrective term for Forced convection losses coefficient for each node |
| Real | hcCorr2 | 1.00 | Corrective term for Natural convection losses coefficient for each node |
| Integer | Ns | 1 | Number of sections inside the wall |
| Units.SI.SpecificHeatCapacity | cpw | 480 | Wall specific heat capacity |
| Units.SI.Density | rhow | 7800 | Wall density |
| Units.SI.Temperature | T0 | 350 | Initial temperature (active if steady_state=false) |
| Boolean | steady_state | true | true: start from steady state - false: start from T0 |
| Real | ntubes | 1 | Number of pipes in parallel |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| ThermoSysPro.Thermal.Connectors.ThermalPort[Ns] | WT2 | Side 2 | |
| ThermoSysPro.Thermal.Connectors.ThermalPort[Ns] | WT1 | Side 1 | |
| InstrumentationAndControl.Connectors.InputReal | AtmTemp | Atmospheric temperature (K) | |
| InstrumentationAndControl.Connectors.InputReal | WindVelo | wind velocity |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Units.SI.Power[Ns] | dW1 | Power in section i of side 1 | |
| Units.SI.Power[Ns] | dW2 | Power in section i of side 2 | |
| Units.SI.Power[Ns] | WRad | Radiation of the wall layer | |
| Units.SI.Power[Ns] | WConv | Convection of the wall layer | |
| Units.SI.Power | Wrad_Total | ||
| Units.SI.Power | Wconv_Total | ||
| Units.SI.Temperature | Tatm | Atmospheric temperature | |
| Units.SI.Temperature | Tfilm | mean fluid temperature | |
| Units.SI.ThermalConductivity | lambda_air | Air thermal conductivity | |
| Units.SI.Density | rho_air | Air density | |
| Units.SI.Density | mu_air | Air viscosity | |
| Units.SI.Temperature | Tsky | Sky temperature | |
| Units.SI.Temperature[Ns] | Tp1 | Wall temperature in section i of side 1 | |
| Units.SI.Temperature[Ns] | Tp2 | Wall temperature in section i of side 2 | |
| Units.SI.Temperature[Ns] | Tp | Average wall temperature in section i | |
| Units.SI.Temperature | Tpm | Average wall temperature | |
| Units.SI.CoefficientOfHeatTransfer[Ns] | hc_n | Natural Convection losses coefficient | |
| Units.SI.CoefficientOfHeatTransfer | hc_f | Forced Convection losses coefficient | |
| Units.SI.CoefficientOfHeatTransfer | hc_f1 | Forced Convection losses coefficient | |
| Units.SI.CoefficientOfHeatTransfer | hc_f2 | Forced Convection losses coefficient | |
| Units.SI.CoefficientOfHeatTransfer | hc_f3 | Forced Convection losses coefficient | |
| Units.SI.CoefficientOfHeatTransfer[Ns] | hc | Mixed Convection losses coefficient | |
| Units.SI.Velocity | v_wind | Wind Velocity | |
| Units.SI.ReynoldsNumber | Re | Fluid Reynolds number | |
| Units.SI.GrashofNumber[Ns] | Gr | Fluid Grashof number |
Revisions
Authors Baligh El Hefni Marie-Agnes Garnero Guillaume Larrignon