modelHeatConvOutside

Model for heat transfer at outside surfaces. Choice between multiple models

Extends from Modelica.Thermal.HeatTransfer.Interfaces.Element1D.

Information

Overview

The HeatTransferOutside is a model for the convective heat transfer at outside walls

Concept

It allows the choice between three different models:

after DIN 6946: h = 4+4v , where h (hCon) is the heat transfer coefficent and v is the wind speed
after the ASHRAE Fundamentals Handbook from 1989, the way it is presented in EnergyPlus Engineering reference from 2011: h = D+Ev+Fv^2 , where h (hCon) and v are as above and the coefficients D, E, F depend on the surface of the outer wall.
Attention: This is a combined coefficient for convective and radiative heat exchange.
with a custom constant h (hCon) value

References

DIN 6946 p.20
ASHRAEHandbook1989, as cited in EnergyPlus Engineering Reference. : EnergyPlus Engineering Reference, 2011 p.56

Example Results

AixLib.Utilities.Examples.HeatTransfer_test

November 16, 2016 by Ana Constantin:
Conditioned input WindSpeedPort and introduced protected input WindSpeed_internal

April 1, 2014 by Ana Constantin:
Uses components from MSL and respects the naming conventions

Type	Name	Default	Description
Computational Models
AixLib.ThermalZones.HighOrder.Components.Types.CalcMethodConvectiveHeatTransfer	calcMethod	AixLib.ThermalZones.HighOrder.Components.Types.CalcMethodConvectiveHeatTransfer.ASHRAE_Fundamentals	Calculation method for convective heat transfer coefficient
Surface properties
Modelica.Units.SI.Area	A		Area of surface
Modelica.Units.SI.CoefficientOfHeatTransfer	hCon_const	25	Custom convective heat transfer coeffient
DataBase.Surfaces.RoughnessForHT.PolynomialCoefficients_ASHRAEHandbook	surfaceType	DataBase.Surfaces.RoughnessForHT.Brick_RoughPlaster()	Surface type

Type	Name	Default	Description
Modelica.Units.SI.CoefficientOfHeatTransfer	hCon		Convection heat transfer coeffient
Modelica.Blocks.Interfaces.RealInput	WindSpeedPort