modelHeatConvPipeInside
Model for Heat Transfer through convection inside a pipe, based on Nussel Correlations
Extends from AixLib.Obsolete.BaseClasses.ObsoleteModel, Modelica.Thermal.HeatTransfer.Interfaces.Element1D.
Information
Overview
This model represents the phenomenon of heat convection inside a pipe by a flowing medium.
The heat transfer coefficient at the inside could be calculated by formular from VDI-Waermeatlas or a fixed value can be choosen.
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August 11, 2017; by David Jansen:
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.Length | length | length of total pipe | |
| Modelica.Units.SI.Length | d_i | inner diameter of pipe | |
| Modelica.Units.SI.Length | d_a | outer diameter of pipe | |
| Modelica.Units.SI.Area | A_sur | surface for heat transfer | |
| Boolean | calcHCon | true | Use calculated value for inside heat coefficient |
| Modelica.Units.SI.CoefficientOfHeatTransfer | hConIn_const | 30 | Constant convective heat transfer coefficient (Inside) |
| Obsolete.YearIndependent.FastHVAC.Media.BaseClasses.MediumSimple | medium | Obsolete.YearIndependent.FastHVAC.Media.WaterSimple() |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.ReynoldsNumber | Re | ||
| Modelica.Units.SI.Velocity | v | ||
| Modelica.Units.SI.NusseltNumber | Nu | ||
| Modelica.Units.SI.NusseltNumber | Nu_lam_1 | ||
| Modelica.Units.SI.NusseltNumber | Nu_lam_2 | ||
| Modelica.Units.SI.NusseltNumber | Nu_lam | ||
| Modelica.Units.SI.NusseltNumber | Nu_tur | ||
| Modelica.Units.SI.PrandtlNumber | Pr | ||
| Modelica.Units.SI.CoefficientOfHeatTransfer | hCon | Convective heat transfer coefficient | |
| Real | zeta | pressure loss coefficient | |
| Modelica.Blocks.Interfaces.RealInput | m_flow |