modelML_thermal_delta
Multi layers of heat exchanger
Information
Overview
Model of the multi layers of heat exchanger. From the water flow is the convective and radiative heat output calculated.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| FastHVAC.Media.BaseClasses.MediumSimple | medium | FastHVAC.Media.WaterSimple() | Standard charastics for fluid (heat capacity, density, thermal conductivity) |
| Modelica.Units.SI.Mass | m_radiator | 20 | |
| calcT.Temp | calc_dT | Select calculation method of excess temperature | |
| Modelica.Units.SI.Volume | vol_water | 0.0001 | |
| Real | s_eff | Type[1] | |
| Real | dotQ_nomLayer | 100 | Nominal power of single layer |
| Modelica.Units.SI.Temperature | dT_nom | 50 | Nominal access temperature |
| Modelica.Units.SI.Temperature | delta_nom | 50 | Nominal Radiation temperature |
| Modelica.Units.SI.Emissivity | eps | 0.95 | Emissivity |
| Modelica.Units.SI.Area | A | 1 | Area of radiator layer |
| Modelica.Units.SI.Length | d | 0.025 | Thickness of radiator wall |
| Geometry and Material › Geometry | |||
| AixLib.Fluid.HeatExchangers.Radiators.BaseClasses.RadiatorTypes.RadiatorType | Type | Type of radiator | |
| Real | n | 1.3 | |
| Modelica.Units.SI.Length | length | 1.05 | Length of radiator, in m |
| Geometry and Material › Material | |||
| Modelica.Units.SI.Density | densitySteel | densitySteel | Specific density of steel, in kg/m3 |
| Modelica.Units.SI.SpecificHeatCapacity | capacitySteel | capacitySteel | Specific heat capacity of steel, in J/kgK |
| Modelica.Units.SI.ThermalConductivity | lambdaSteel | lambdaSteel | Thermal conductivity of steel, in W/mK |
| Miscellaneous | |||
| Modelica.Units.SI.Temperature | T0 | Modelica.Units.Conversions.from_degC(55) | Initial temperature, in Kelvin |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| AixLib.Utilities.Interfaces.RadPort | Radiative | ||
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | Convective | Therm1 | |
| Interfaces.EnthalpyPort_b | enthalpyPort_b1 | ||
| Interfaces.EnthalpyPort_a | enthalpyPort_a1 |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.Temperature | Tin | ||
| Modelica.Units.SI.Temperature | Tout | ||
| Modelica.Units.SI.Temperature | Trad | ||
| Modelica.Units.SI.Temperature | Tair | ||
| Real | dT_V | ||
| Real | dT_R | ||
| Fluid.HeatExchangers.Radiators.BaseClasses.HeatConvRadiator | heatConv_Radiator | ||
| AixLib.Utilities.HeatTransfer.HeatToRad | twoStar_RadEx | ||
| Fluid.HeatExchangers.Radiators.BaseClasses.RadiatorWall | radiatorWall | ||
| Sensors.TemperatureSensor | temperatureIn | ||
| Sensors.TemperatureSensor | temperatureOut | ||
| FastHVAC.BaseClasses.WorkingFluid | radiatorFluid |
Revisions
-
April 13, 2017 Tobias Blacha:
Moved into AixLib -
December 16, 2014 by Konstantin Finkbeiner:
Derived from HVAC. -
October 7, 2013 by Ole Odendahl:
Added documentation and formatted appropriately