modelDetailedHouse1

Information

This first example instantiates a simple building model that consists of one zone, four walls, a window, a floor and a ceiling. The zone dimensions are 8 m (with walls oriented north and south) by 4 m, and the window measures 3 m by 1.4 m. Use the default zone height of 2.8 m. Apply double glazing and a heavy wall, which provide high thermal mass.

Required models

• IDEAS.BoundaryConditions.SimInfoManager
• IDEAS.Buildings.Components.Zone
• IDEAS.Buildings.Components.OuterWall
• IDEAS.Buildings.Components.Window
• IDEAS.Buildings.Components.SlabOnGround

Connection instructions

Each yellow bus connector of a surface (Window, OuterWall or SlabOnGround) has to be connected to exactly one zone bus connector. To support multiple connections, the zone has an array of bus connectors with size nSurf, where nSurf is a parameter of Zone, which has to be set by the user. It is the user’s responsibility to ensure that each element of this array is connected to exactly one surface and that there is a total of nSurf connections to the zone.

In addition to connecting each surface, the parameters of each component have to be set. Components typically have many default values that are appropriate for many purposes. When a parameter does not have a default value, it must be set by the user. Notable examples are the dimensions and orientation of the zone, walls and windows. The surface orientation can be set using the parameters incOpt, which automatically sets the inclination depending on the type of outer wall (wall, floor, ceiling), and aziOpt, which automatically sets the azimuth (north, east, south, west). Furthermore, the zone Medium must be set to IDEAS.Media.Air. Glazing and wall types must also be specified. This example uses the BESTEST Heavy Wall for the walls, the FloorOnGround construction type for the floor, the BESTEST light roof for the roof and the double glazing type Saint Gobain Planitherm and a south orientation for the window.

The SimInfoManager by default has the modifier inner in its declaration. All IDEAS building components have the modifier outer in their respective declarations of the SimInfoManager. This causes the component declarations to point towards the higher level SimInfoManager declaration. This way all model equations for the weather data have to be generated only once, instead of for each surface.

Reference result

This model is simulated with the following settings:

1. Dassl as the solver with tolerance = 1e-06
2. Start time = 1e7,
3. Stop time = 1.1e7,
4. Number of intervals = 5000.

The simulation starts 10⁷ seconds after New Year and ends 10⁶ seconds later, covering a period of 11.6 days. The figure below shows the operative zone temperature, zon.TSensor, which represents the mean of the air temperature and the mean radiative temperature of all surfaces.

Parameters

Components

Contents

Revisions

• April 14, 2025, by Anna Dell'Isola and Lone Meertens:
  Update and restructure IDEAS tutorial models. See #1374 and #1389.
• September 18, 2019 by Filip Jorissen:
  First implementation for the IDEAS crash course.