modelConvection_tubeBank_L2

Shell Geo || L2 || Convection Tube Bank

Extends from ClaRa.Basics.ControlVolumes.Fundamentals.HeatTransport.Gas_HT.Convection.HeatTransfer_L2, ClaRa.Basics.ControlVolumes.Fundamentals.HeatTransport.HeatTransferBaseGas_only (Partial heat transfer model for only Gas-type HT models).

Information

Model description: A correlation for convective heat transfer inside tube banks

FEATURES

This model uses TILMedia
Aligned, staggered or partly staggered tubes supported
Needs geometry model for tube banks
Equations according to: VDI-Wärmeatlas: 10.bearbeitete und erweiterte Auflage, 2006, chapter Gg1-4

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

Authorship and Copyright Statement for original (initial) Contribution

Author:

References:

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

Remarks:

This component was developed by ClaRa development team under the 3-clause BSD License.

Acknowledgements:

ClaRa originated from the collaborative research projects DYNCAP and DYNSTART. Both research projects were supported by the German Federal Ministry for Economic Affairs and Energy (FKZ 03ET2009 and FKZ 03ET7060).

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
String	gas (from HeatTransferBaseGas)	"true"
Boolean	useHomotopy (from HeatTransfer_L2)
Integer	HT_type	0
Integer	heatSurfaceAlloc	2	To be considered heat transfer area
Heat Transfer
String	temperatureDifference (from HeatTransfer_L2)	"Logarithmic mean - smoothed"	Temperature Difference

Connectors

Type	Name	Default	Description
ClaRa.Basics.Interfaces.HeatPort_a	heat (from HeatTransfer_L2)

Components

Type	Name	Default	Description
ClaRa.Basics.Records.IComGas_L2	iCom (from HeatTransfer_L2)
Real	CF_fouling (from HeatTransfer_L2)	0.8	Scaling factor accounting for the fouling of the wall
Units.Temperature	Delta_T_wi (from HeatTransfer_L2)		Temperature difference between wall and fluid inlet temperature
Units.Temperature	Delta_T_wo (from HeatTransfer_L2)		Temperature difference between wall and fluid outlet temperature
Units.Temperature	Delta_T_mean (from HeatTransfer_L2)		Mean temperature
Units.Temperature	Delta_T_U (from HeatTransfer_L2)		Upper temperature difference
Units.Temperature	Delta_T_L (from HeatTransfer_L2)		Lower temperature difference
ClaRa.Basics.Units.CoefficientOfHeatTransfer	alpha		Heat transfer coefficient
ClaRa.Basics.Units.Velocity	w		Flue gas velocity
Real	Nu_llam		Nusselt number laminar
Real	Nu_lturb		Nusselt number turbulent
Real	Nu_l0		Nusselt number
Real	Nu_tubeBank		Nusselt number at tube bank
ClaRa.Basics.Units.ThermalResistance	HR		Convective heat resistance
ClaRa.Basics.Units.ThermalResistance	HR_nom		Nominal convective heat resistance

Revisions

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