| Integer | ItotalNumPipes (from HEXtubesDefinition) | | total number of individual inner pipes |
| Modelica.Units.SI.Distance | IiPerimeter (from HEXtubesDefinition) | | inner pipe internal wetted perimeter |
| Modelica.Units.SI.Area | IiSection (from HEXtubesDefinition) | | inner pipe internal flow section |
| Modelica.Units.SI.Distance | IDh (from HEXtubesDefinition) | | internal pipe hydraulic diameter |
| Modelica.Units.SI.Area | IiArea (from HEXtubesDefinition) | | total inner pipes internal heat transfer area |
| Modelica.Units.SI.Distance | IoPerimeter (from HEXtubesDefinition) | | inner pipe external perimeter |
| Modelica.Units.SI.Area | IoSection (from HEXtubesDefinition) | | inner pipe external section |
| Modelica.Units.SI.Area | IoArea (from HEXtubesDefinition) | | total inner pipes external heat transfer area |
| MediumI.ThermodynamicState | IStateIn (from HEXtubesDefinition) | | inner flow inlet state |
| MediumI.ThermodynamicState | IStateOut (from HEXtubesDefinition) | | inner flow outlet state |
| Modelica.Units.SI.Temperature | ITin (from HEXtubesDefinition) | | inner flow inlet temperature |
| Modelica.Units.SI.Temperature | ITout (from HEXtubesDefinition) | | iiner flow outlet temperature |
| Modelica.Units.SI.Temperature | IT (from HEXtubesDefinition) | | inner pipe average temperature |
| MediumI.ThermodynamicState | IStateWall (from HEXtubesDefinition) | | inner pipe wall state for correction factors
calculation |
| Modelica.Units.SI.Temperature | ITwall (from HEXtubesDefinition) | | inner pipe wall temperature |
| Modelica.Units.SI.DynamicViscosity | IMuWall (from HEXtubesDefinition) | | inner pipe wall dynamic viscosity |
| Real | IPlossCorr (from HEXtubesDefinition) | | internal pipe pressure loss correction factor |
| Modelica.Units.SI.AbsolutePressure | IPloss (from HEXtubesDefinition) | | internal pipe pressure loss by friction, without taking into account the nozzles |
| Real | IHTcorr (from HEXtubesDefinition) | | internal pipe heat transfer correction factor |
| Modelica.Units.SI.NusseltNumber | INu (from HEXtubesDefinition) | | inner pipe Nusselt number |
| Modelica.Units.SI.CoefficientOfHeatTransfer | IH (from HEXtubesDefinition) | | inner pipe average heat transfer coefficient |
| MediumO.ThermodynamicState | OStateIn (from HEXtubesDefinition) | | outer flow inlet state |
| MediumO.ThermodynamicState | OStateOut (from HEXtubesDefinition) | | outer flow outlet state |
| Modelica.Units.SI.Temperature | OTin (from HEXtubesDefinition) | | outer flow inlet temperature |
| Modelica.Units.SI.Temperature | OTout (from HEXtubesDefinition) | | outer flow outlet temperature |
| Modelica.Units.SI.Temperature | OT (from HEXtubesDefinition) | | outer flow average temperature |
| Modelica.Units.SI.Length | IEquivLength (from HEXtubesDefinition) | | internal pipe equivalent length for pressure drop |
| Real | OPlossCorr (from HEXtubesDefinition) | | outer flow pressure loss correction factor |
| Modelica.Units.SI.AbsolutePressure | OPloss (from HEXtubesDefinition) | | outer flow pressure loss by friction |
| Modelica.Units.SI.Area | OiArea (from HEXtubesDefinition) | | total outer flow internal area for heat transfer |
| Fraction | OiEfficiency (from HEXtubesDefinition) | | outer flow internal area efficiency |
| Modelica.Units.SI.NusseltNumber | ONu (from HEXtubesDefinition) | | outer flow nusselt number for internal heat transfer |
| Modelica.Units.SI.CoefficientOfHeatTransfer | OHi (from HEXtubesDefinition) | | outer flow average heat transfer coefficient to inner pipe |
| Modelica.Units.SI.ThermalResistance | TRii (from HEXtubesDefinition) | | total resitance for the transfer between inner fluid and inner wall |
| Modelica.Units.SI.ThermalResistance | TRio (from HEXtubesDefinition) | | total resitance for the transfer between outer fluid and inner wall |
| Modelica.Units.SI.ThermalResistance | TRi (from HEXtubesDefinition) | | total resitance for the transfer between inner and outer fluids |
| Modelica.Units.SI.CoefficientOfHeatTransfer | Ui (from HEXtubesDefinition) | | global heat transfer coefficient referenced to total inner flow area |
| Modelica.Units.SI.TemperatureDifference | ILMTD (from HEXtubesDefinition) | | LMTD between inner and outer fluids |
| Fraction | ILMTDcorr (from HEXtubesDefinition) | | internal LMTD correction factor |
| Real | Rntu (from HEXtubesDefinition) | | |
| Real | NTU (from HEXtubesDefinition) | | |
| Modelica.Units.SI.Power | IW (from HEXtubesDefinition) | | heat exchanged between inner and outer fluids. Positive if heat enters the inner fluid |
| Modelica.Units.SI.Area | IiArea1 (from HEXtubesDefinition) | | total inner pipes internal heat transfer area used in first stage transfer |
| Modelica.Units.SI.ThermalResistance | TRi1 (from HEXtubesDefinition) | | total resitance for the transfer between inner and outer fluids in the first stage |
| Integer | TubesInShell | | |
| Integer | PassesInShell | | |
| Modelica.Units.SI.Diameter | IDo | | inner pipe external diameter |
| Real | TubeCountFactor | | |
| Real | TubeLayoutFactor | | |
| SI.Distance | Pitch | | should be at least 6 mm more than IDo |
| SI.Distance | PitchP | | pitch parallel to flow |
| SI.Distance | PitchN | | pitch normal to flow |
| SI.Diameter | DshIProposal | | internal shell diameter recommended from number of tubes |
| SI.Diameter | DbuO | | tube bundle external diameter |
| SI.Distance | BaCut | | max distance from baffle to shell |
| SI.Distance | BaSep | | inter baffles distance. Minimum 1/5 of shell diameter or 5 cms. max: 29.54*IDo^0.75. Optimum: 0.3-0.6 of dShI |
| SI.Angle | ThetaBuC | | angle of baffle cut intersection with outer tubes centers diameter |
| SI.Angle | ThetaSh | | angle of baffle cut intersection with shell |
| Fraction | Fw | | fraction of total tubes in each window |
| Fraction | Fc | | fraction of total tubes in full crossflow |
| SI.Area | OSm | | crossflow area at axis of exchanger |
| SI.Area | OSBaSh | | baffle to shell leakage area for each baffle |
| SI.Area | OSTuBa | | tube to baffle leakage area for each baffle |
| SI.Area | OSb | | bundle bypass area |
| Real | Nc | | number of rows in full crossflow |
| Real | Ncw | | number of effective crossflow rows in each window |
| SI.Area | OSw | | free area for shell flow at windows |
