modelHeader

A header (distribution pipe) e.g. for superheater.

Extends from ClaRa.Basics.Icons.Header.

Information

For detailed model documentation please consult the html-documentation shipped with ClaRa.

Authorship and Copyright Statement for original (initial) Contribution

Author:

www.fvtr.de

References:

For references please consult the html-documentation shipped with ClaRa.

Remarks:

This component was developed by Forschungszentrum für Verbrennungsmotoren und Thermodynamik Rostock GmbH for industry projects in cooperation with Lausitz Energie Kraftwerke AG, Cottbus.

Acknowledgements:

This model contribution is sponsored by Lausitz Energie Kraftwerke AG.

www.leag.de

CLA:

The author(s) have agreed to ClaRa CLA, version 1.0. See https://claralib.com/pdf/CLA.pdf

By agreeing to ClaRa CLA, version 1.0 the author has granted the ClaRa development team a permanent right to use and modify his initial contribution as well as to publish it or its modified versions under the 3-clause BSD License.

The ClaRa development team consists of the following partners:

TLK-Thermo GmbH (Braunschweig, Germany)

XRG Simulation GmbH (Hamburg, Germany).

Parameters

Type	Name	Default	Description
ClaRa.Basics.Units.Temperature	T_fluid_start	TILMedia.VLEFluid.Functions.temperature_phxi(medium, p_start, h_start, xi_start)
Fundamental Definitions
TILMedia.VLEFluid.Types.BaseVLEFluid	medium	simCenter.fluid1	Medium in the component
Boolean	isAdiabat	false	True if adiabat
Boolean	frictionAtInlet	false	True if pressure loss between first cell and inlet shall be considered
Boolean	frictionAtOutlet	false	True if pressure loss between last cell and outlet shall be considered
Geometry
ClaRa.Basics.Units.Length	length	5	Length of the pipe (one pass)
ClaRa.Basics.Units.Length	diameter_i	0.3	Inner diameter of the pipe
ClaRa.Basics.Units.Length	diameter_o	0.33	Outer diameter
ClaRa.Basics.Units.Length	thickness_insulation	0.2	Thickness of inslation
ClaRa.Basics.Units.Length	insulationDiameter_i	diameter_o	Inner diameter of insulation
ClaRa.Basics.Units.Length	insulationDiameter_o	insulationDiameter_i + 2*thickness_insulation	Outer diameter of insulation
ClaRa.Basics.Units.Length	z_in	0	Height of inlet above ground
ClaRa.Basics.Units.Length	z_out	0	Height of outlet above ground
Integer	N_tubes	1	Number Of parallel pipes
Integer	N_passes	1	Number of passes of the tubes
Nominal Values
ClaRa.Basics.Units.Pressure	p_nom	1e5	Nominal pressure
ClaRa.Basics.Units.EnthalpyMassSpecific	h_nom	1e5	Nominal specific enthalpy for single tube
ClaRa.Basics.Units.MassFlowRate	m_flow_nom	100	Nominal mass flow w.r.t. all parallel tubes
ClaRa.Basics.Units.PressureDifference	Delta_p_nom	1e4	Nominal pressure loss w.r.t. all parallel tubes
Initialisation
Integer	initOption	0	Type of initialisation
ClaRa.Basics.Units.EnthalpyMassSpecific	h_start	800e3	Initial specific enthalpy for single tube
ClaRa.Basics.Units.Pressure	p_start	1e5	Initial pressure
ClaRa.Basics.Units.MassFraction[medium.nc - 1]	xi_start	zeros(pipeFlow.medium.nc - 1)	Initial composition
Summary and Visualisation
Boolean	isOutletHeader	false	True if component is outlet header

Connectors

Type	Name	Default	Description
ClaRa.Basics.Interfaces.FluidPortOut	outlet		Outlet port
ClaRa.Basics.Interfaces.FluidPortIn	inlet		Inlet port

Components

Type	Name	Default	Description
ClaRa.SimCenter	simCenter
ClaRa.Components.VolumesValvesFittings.Pipes.PipeFlowVLE_L2_Simple	pipeFlow
ClaRa.Basics.ControlVolumes.SolidVolumes.CylindricalThickWall_L4	pipeWall
ClaRa.Basics.ControlVolumes.SolidVolumes.CylindricalThickWall_L4	insulation
BoundaryConditions.Ambience	ambience

Name	Description
WallMaterial
InsulationMaterial
PressureLoss
HeatTransfer
MechanicalEquilibrium

Revisions

Date		Version		Author		Affiliation		Changes
2020-08-20		ClaRa 1.6.0		Friedrich Gottelt		FVTR GmbH		Initial version of model

Version means first ClaRa version where the applied change was published.