modelConstructionWithWindow

Model for an opaque construction that has one window embedded in the construction

Extends from Buildings.ThermalZones.Detailed.Constructions.BaseClasses.PartialConstruction.

Information

This model is used to compute heat transfer through constructions with windows inside the room model.

The model consists of the following two main submodels:

The instance opa, which uses the model Buildings.HeatTransfer.Conduction.MultiLayer to compute the heat transfer through the opaque part of the construction. This model uses the record layers to access the material properties of the opaque construction.
The instance win, which uses the model Buildings.HeatTransfer.Windows.Window to compute the heat transfer through the glazing system. This model uses the record glaSys to access the material properties of the glazing system.

The parameter A is the area of the opaque construction plus the window. The parameter AWin is the area of the glazing system, including the frame. The area of the opaque construction is assigned internally as AOpa=A-AWin.

Parameters

Type	Name	Default	Description
Boolean	homotopyInitialization	true	= true, use homotopy method
Glazing system
Modelica.Units.SI.Area	AWin		Heat transfer area of window
Real	fFra	0.1	Fraction of window frame divided by total window area
Modelica.Units.SI.Area	AFra	fFra*AWin	Frame area
Modelica.Units.SI.Area	AGla	AWin - AFra	Glass area
Boolean	linearizeRadiation	true	Set to true to linearize emissive power
Boolean	steadyStateWindow	false	Set to false to add thermal capacity at window, which generally leads to faster simulation
HeatTransfer.Data.GlazingSystems.Generic	glaSys		Material properties of glazing system

Components

Type	Name	Description
HeatTransfer.Windows.Window	win	Window model
HeatTransfer.Interfaces.RadiosityOutflow	JOutUns_a	Outgoing radiosity that connects to unshaded part of glass at exterior side
HeatTransfer.Interfaces.RadiosityInflow	JInUns_a	Incoming radiosity that connects to unshaded part of glass at exterior side
HeatTransfer.Interfaces.RadiosityOutflow	JOutSha_a	Outgoing radiosity that connects to shaded part of glass at exterior side
HeatTransfer.Interfaces.RadiosityInflow	JInSha_a	Incoming radiosity that connects to shaded part of glass at exterior side
Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a	glaUns_a	Heat port at unshaded glass of exterior-facing surface
Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a	glaSha_a	Heat port at shaded glass of exterior-facing surface
Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a	fra_a	Heat port at frame of exterior-facing surface
Modelica.Blocks.Interfaces.RealInput	uSha	Control signal for the shading device, 0: unshaded; 1: fully shaded (removed if no shade is present)
HeatTransfer.Interfaces.RadiosityOutflow	JOutUns_b	Outgoing radiosity that connects to unshaded part of glass at room-side
HeatTransfer.Interfaces.RadiosityInflow	JInUns_b	Incoming radiosity that connects to unshaded part of glass at room-side
HeatTransfer.Interfaces.RadiosityOutflow	JOutSha_b	Outgoing radiosity that connects to shaded part of glass at room-side
HeatTransfer.Interfaces.RadiosityInflow	JInSha_b	Incoming radiosity that connects to shaded part of glass at room-side
Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_b	glaUns_b	Heat port at unshaded glass of room-facing surface
Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_b	glaSha_b	Heat port at shaded glass of room-facing surface
Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_b	fra_b	Heat port at frame of room-facing surface
Modelica.Blocks.Interfaces.RealInput[size(glaSys.glass, 1)]	QAbsUns_flow	Solar radiation absorbed by unshaded part of glass
Modelica.Blocks.Interfaces.RealInput[size(glaSys.glass, 1)]	QAbsSha_flow	Solar radiation absorbed by shaded part of glass

Revisions

April 14, 2020, by Michael Wetter:
Changed homotopyInitialization to a constant.
This is for IBPSA, #1341.
October 29, 2016, by Michael Wetter:
Added optional capacity at the room-facing surface to reduce the dimension of the nonlinear system of equations, which generally decreases computing time.
This is for issue 565.
March 13, 2015, by Michael Wetter:
Changed model to avoid a translation error in OpenModelica.
July 25, 2014, by Michael Wetter:
Propagated parameter homotopyInitialization.
May 30, 2014, by Michael Wetter:
Removed undesirable annotation Evaluate=true.
December 6 2010, by Michael Wetter:
First implementation.