modelHeatTransfer_EN442

EN4442_2
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Extends from ClaRa.Basics.ControlVolumes.Fundamentals.HeatTransport.Generic_HT.HeatTransfer_L2, ClaRa.Basics.ControlVolumes.Fundamentals.HeatTransport.TubeType_L2, ClaRa.Basics.ControlVolumes.Fundamentals.HeatTransport.ShellType_L2.

Information

1. Purpose of model

Model for Heat Transfer according to DIN EN 442-2.

2. Level of detail, physical effects considered, and physical insight

A detailed description of the calculation can be find in DIN EN 442-2.

3. Limits of validity

(Description)

4. Interfaces

(none)

5. Nomenclature

UA...Constant of Modell

n...Exponent according to 442-2

6. Governing Equations

Q_flow = UA* ∆T^n

7. Remarks for Usage

(none)

8. Validation

(no validation or testing necessary)

9. References

DIN EN 442-2:2014 - Radiatoren und Konvektoren Beuth Verlag, Berlin,2014.

10. Version History

Model created by Anne Senkel (anne.senkel@tuhh.de), January 2020

Parameters

TypeNameDefaultDescription
Realn1/3Exponent for Radiators according to EN4442_2
Modelica.Units.SI.TemperatureT_mean_supply273.15 + 60
Modelica.Units.SI.TemperatureDifferenceDT_nom20
Modelica.Units.SI.HeatFlowRateQ_flow_nom500
Modelica.Units.SI.TemperatureT_air_nom295.15
Modelica.Units.SI.TemperatureDifferenceDelta_T_mean_n((T_mean_supply - DT_nom) - T_air_nom)^n
RealUAQ_flow_nom/Delta_T_mean_nUA value at nominal condition
IntegerheatSurfaceAlloc1To be considered heat transfer area

Components

TypeNameDefaultDescription
ClaRa.Basics.Records.IComBase_L2iCom
ClaRa.Basics.ControlVolumes.Fundamentals.Geometry.GenericGeometrygeo