Output Files: Buildings data (_BLDG_)

*Work in Progress…*

Dimension Nr Variables Format
3D-Facade 10 (Static), 50 (Dynamic) Binary (EDX/EDT)

Building Data

Contains the state of the 3D buildings both for static data like materials or view factors and dynamic variables such as facade temperature or heat fluxes. Data are stored in a 3D field with a data triple for X- , Y- and Z-Walls in each cell.

The Building data files are produced each main output interval (default: 60 min) and represent the general state of the building at the given model time. They are divided into static and dynamic data, the dynamic output is only written if a professional version of the software is used (not in LITE).

Variable list

This list represents the general variable structure. The actual sequence of the variables might differ but the same information is stored in total.

Static

The static dataset includes some information that does not change during the model run. The *.DAT-files contain some statistical information about the specific buildings, such as the surface and volume (Building List.DAT) and the facade orientation, element count, element surface, green element count and green surface count (Building Statistics.DAT).

The *.EDX/EDT output files contain the following parameters:

Variable Unit Description
Albedo of facade - Albedo of the facade, the proportion of the radiation that is reflected by the facade
Transmission of facade - Transmission of the facade, fraction of shortwave radiation transmitted through the material
Emissivity of facade - Emissivity of the facade, emissivity for longwave thermal radiation
View factor sky - Proportion of sky that can be seen by the facade element
View factor soil - Proportion of soil that can be seen by the facade element
View factor bldg - Proportion of buildings that can be seen by the facade element
View factor veg - Proportion of vegetation that can be seen by the facade element
Building number - Building number of building
Facade/ Roof Greening LAI m³/m³ LAI of Facade/Roof Greening that is applied to the element
Facade/ Roof Greening Thickness cm Thickness of Facade/Roof Greening that is applied to the element

Dynamic

The dynamic dataset includes some information that does change during the model run. It is divided into the different building elements and contains the following parameters.

Wall

Variable Unit Description
Wall shading flag - Information whether your facade element receives direct radiation or not
Temperature Node 1/ outside °C Temperature of the material outside
Temperature Node 2 °C Temperature of the material at node 2
Temperature Node 3 °C Temperature of the material at node 3
Temperature Node 4 °C Temperature of the material at node 4
Temperature Node 5 °C Temperature of the material at node 5
Temperature Node 6 °C Temperature of the material at node 6
Temperature Node 7/ inside °C Temperature of the material inside
Longwave radiation emitted by facade W/m² Amount of longwave radiation that gets emitted by the facade
Wind Speed in front of facade m/s Wind speed, vector sum over all 3 axis
Air Temperature in front of facade °C Potential air temperature in the atmosphere in front of the facade
Shortwave radiation received at facade W/m² Total amount of shortwave radiation received at the facade
Absorbed direct shortwave radiation W/m² Amount of direct shortwave radiation that gets absorbed by the facade
Incoming longwave radiation W/m² Amount of longwave radiation that hits the facade
Reflected shortwave radiation facade W/m² Amount of reflected shortwave radiation that hits the facade
Sensible Heat transmission coefficient outside W/m²K Sensible Heat transmission coefficient at the outside of the building
Longwave Energy Balance W/m²

Building

Variable Unit Description
Sum Humidity Flux at facade g/sm³
Temperature of building (inside) °C
Reflected shortwave radiation W/m²
Longwave radiation emitted W/m²

Greening

Variable Unit Description
Temperature Leafs °C
Air Temperature Canopy °C
Air Humidity Canopy g/kg
Longwave radiation emitted (two-side) W/m²
Wind Speed in front of greening m/s
Air Temperature in front of greening °C
Shortwave radiation received at greening W/m²
Incoming longwave radiation (two-side) W/m²
Reflected shortwave radiation W/m²
Transpiration Flux g/sm³
Stomata Resistance s/m
Water access factor -

Substrate

Variable Unit Description
Temperature Node 1/ outside °C
Temperature Node 2 °C
Temperature Node 3 °C
Temperature Node 4 °C
Temperature Node 5 °C
Temperature Node 6 °C
Temperature Node 7/ inside °C
Surface humidity g/kg
Humidity Flux at substrate g/sm³
Longwave radiation emitted by substrate W/m²
Wind Speed in front of substrate m/s
Air Temperature in front of substrate °C
Shortwave radiation received at substrate W/m²
Absorbed direct shortwave radiation W/m²
Incoming longwave radiation W/m²
Reflected shortwave radiation substrate W/m²
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