modelFourElements
Thermal Zone with four elements for exterior walls,
interior walls, floor plate and roof
Extends from ThreeElements.
Information
This model adds another element for the roof. Roofs commonly
exhibit the same excitations as exterior walls but have different coefficients
of heat transfer due to their orientation. Adding an extra element for the roof
might lead to a finer resolution of the dynamic behaviour but increases
calculation times. The roof is parameterized via the length of the RC-chain
nRoof,
the vector of capacities CRoof[nRoof], the vector of resistances
RRoof[nRoof] and remaining resistances RRoofRem.
The image below shows the RC-network of this model.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Roof | |||
| Modelica.SIunits.Area | ARoof | Area of roof | |
| Modelica.SIunits.CoefficientOfHeatTransfer | alphaRoof | Convective coefficient of heat transfer of roof (indoor) | |
| Integer | nRoof | Number of RC-elements of roof | |
| Modelica.SIunits.ThermalResistance[nExt] | RRoof | Vector of resistances of roof, from inside to outside | |
| Modelica.SIunits.ThermalResistance | RRoofRem | Resistance of remaining resistor RRoofRem between capacity n and outside | |
| Modelica.SIunits.HeatCapacity[nExt] | CRoof | Vector of heat capacities of roof, from inside to outside | |
| Boolean | indoorPortRoof | false | Additional heat port at indoor surface of roof |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | roof | Ambient port for roof | |
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | roofIndoorSurface | Auxiliary port at indoor surface of roof | |
| BaseClasses.ExteriorWall | roofRC | RC-element for roof |
Revisions
-
August 31, 2018 by Moritz Lauster:
Updated schema in documentation and fixes orientation and connections of roofRC for issue 997. -
September 11, 2015 by Moritz Lauster:
First Implementation.