.IDEAS.Buildings.Components.Interfaces.PartialSurface

Information

Partial model for all surfaces and windows that contains common building blocks such as material layers and parameters.

Main equations

Submodel layMul contains equations for simulating conductive (and sometimes radiative) heat transfer inside material layers.

Assumption and limitations

This model assumes 1D heat transfer, i.e. edge effects are neglected. Mass exchange (moisture) is not modelled.

Typical use and important parameters

Parameters inc and azi may be used to specify the inclination and azimuth/tilt angle of the surface. Variables in IDEAS.Types.Azimuth and IDEAS.Types.Tilt may be used for this purpose or custom variables may be defined. Numerical values can be used directly. Azimuth angles should be in radians relative to the south orientation, clockwise. Tilt angles should be in radians where an angle of 0 is the ceiling (upward) orientation and an angle of Pi is the floor (downward) orientation. Preferably the azimuth angle is set to zero for horizontal tilt angles, since this leads to more efficient code, although the model results will not change.

The parameter nWin is used in the window model to scale the window to nWin identical window using the single window model.

Options

Convection equations may be simplified (linearised) by setting linIntCon_a = true.

Dynamics

This model contains multiple state variables for describing the temperature state of the component.

Contents

Revisions

• August 18, 2025, by Klaas De Jonge:
  Changed inc to incInt where nececarry.
• January 24, 2025, by Klaas De Jonge:
  Addition of BooleanPassThrough and RealPassThrough block for v50 and use_custom_q50 and parameter for number of dummy connections in Q50_parameterToConnector to avoid translation warnings. See #1402
• November 7, 2024, by Anna Dell'Isola and Jelger Jansen:
  Add variable TRefZon to be used when calculating QTra_design. See #1337
October 30, 2024, by Klaas De Jonge and Filip Jorissen:
Additions for supporting interzonal airflow: use of crackoroperabledoor model, default column height implementation for stack-effect.
• October 23, 2023, by Filip Jorissen:
  Using real expression to set area of propsBusInt. To add some flexibility for ensuring n50 computation is correct.
• August 10, 2020, by Filip Jorissen:
  Modifications for supporting interzonal airflow. See #1066
• October 13, 2019, by Filip Jorissen:
  Refactored the parameter definition of inc and azi by adding the option to use radio buttons. See #1067
• August 10, 2018 by Damien Picard:
  Add scaling to propsBus_a to allow simulation of nWin windows instead of 1 See #888. This factor is not useful for wall and it is set final to 1 for them.
• January 26, 2018, by Filip Jorissen:
  Extended documentation.
• March 21, 2017, by Filip Jorissen:
  Changed bus declarations for JModelica compatibility. See issue #559.
• January 10, 2017, by Filip Jorissen:
  Declared parameter A instead of using AWall in IDEAS.Buildings.Components.Interfaces.PartialOpaqueSurface. This is for #609.
• November 15, 2016, by Filip Jorissen:
  Revised documentation for IDEAS 1.0.
• March 8, 2016, by Filip Jorissen:
  Added energyDynamics parameter.
• February 10, 2016, by Filip Jorissen and Damien Picard:
  Revised implementation: cleaned up connections and partials.
• February 6, 2016 by Damien Picard:
  First implementation.