- When I run a macro the combo box is empty and I
cannot select my TSD/TBD file, why?
- What does "Error - Windows are not contained
within their wall and have been omitted from the analysis model" mean and
how do I fix it?
- Why does my wall not appear in the 3D Zones View?
- In the 3D View I can not display shadows or
export a 3D dwg file, why?
- I have corrected an error in my 3D model but the
"Analysis model errors and warnings" dialog still says the error is present
, why?
- When I try and run a simulation I receive the
following error "Shading data longitude/latitude mismatch. Recalculate
shading data or change the weather file.", why?
- My model only has Warnings when I export and the software lets
me carry on to run a simulation so I don't have to worry about warnings,
right?
- Not all of my building elements are exported into the Building
Simulator, where have they gone?
- When importing a dwg drawing I can not map to the model because
I can only see the dwg file. How do I view the model as well?
- How do I calculate a daylight factor?
- I am not seeing air flow through my apertures, what could be the
problem?
- How do I model an Awning using Feature Shading?
- How do I model horizontal slats using Feature Shading?
- How do I model vertical fins using Feature Shading?
- How do I model sloping slats using Feature Shading?
- When I run a simulation I receive the following error "Load
Shading Failed", how do I fix this problem?
- What could cause a "Max pressure exceeded in flow
analysis" error?
- What is the cause of the "Air Flow Imbalance" error?
- When I run a macro I receive the following error "The TBD File
<file path> has been deleted, renamed or moved from the original folder", how
do I fix the problem?
- How do I fix the following error "A single surface accounts for
>49.5% of the zone surface area Zone <No.> Surface <No.>"?
The current project directory must be set in the Tas Manager. Do this by
selecting your project directory in the treeview, right click the mouse and
choose "Set current directory". The current project directory textbox in the top
right corner of the Tas Manager will now contain the name of project directory
you selected.
The level and or height of the window does not allow it to fit in the wall
it was drawn onto.
The window level must be greater than or equal to the thickness of the floor
building element. If you want the window to be placed on the floor level simply
check the "Door" radio button. The window height must be less than or equal to
the floor height minus the ceiling building element thickness and the window
level.
Example: Floor height 3m, Floor Building Element thickness
0.05m, Ceiling Building Element thickness 0.1m. If the window level is 1m the
maximum height for the window is 3m - 0.1m - 1m = 1.9m.
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For a wall to appear in the 3D Zones View it must bound a
space. A single wall will not appear in the 3D model because it does not bound a
space.
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To display shadows or export a 3D dwg file the 3D view must
display the model by zones. From the menu select View>Display>Zones.
The model needs to be refreshed. With a 3D Zones View selected
choose the View>Refresh item from the menu. This recreates the zones model and
checks for errors. The updated errors and warnings will now be displayed.
When the model was exported from the 3D Modeller the shadow calculations
were run for the Latitude and Longitude Correction values indicated in the
Building dialog (Building>Building... from the menu).
In the Building simulator a weather file is added. This weather data has
Latitude and Longitude information.
The error is caused when the global position indicated in the weather file
does not match the global position used for the shadow calculations. To correct
the mismatch re-export the model from the 3D Modeller running the shadow
calculations and merging with the Building Simulator file (tbd). The software
will take the Latitude and Longitude information from the weather file and
correct the values held in the Building dialog automatically.
Please note: Longitude Correction
is not the same as Longitude.
Wrong. You must go through your model and check all the Warnings. Make sure
you understand what each warning means, why it is occurring and what the
consequences are for your model.
If you do not understand why the warning occurs contact
technical support and ask.
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The 3D Modeller exports only the zoned areas of the model.
Therefore if the building elements you were expecting to appear in the Building
Simulator are used exclusively in an Un-zoned area of the 3D Model they are
excluded.
From the menu choose Window>Tile. You can then arrange the
views to suit.
Daylight factors can be calculated using a specialist lighting package such
as Lumen Designer. Export a 3D dwg file from the 3D Modeller
and open this file in Lumen Designer. You can then set up calculation grids and
run a daylight simulation. EDSL run a one day
training course on how to use
Lumen Designer for daylight calculation.
Setting up the aperture: Ensure that you have an Aperture Type
assigned to the relevant building element. Check that the aperture type does
have periods when the aperture will open. If you are using an aperture function
please ensure that the wind speed parameter is greater than zero. Check that you
did not inadvertently check the ground flag on the aperture building element in
the 3D Modeller.
Outputting the relevant surface data: Ensure that when the simulation
is run that the "output aperture data" box is checked or that you have assigned
a surface output spec with the aperture data flag checked to each aperture
surface of interest. This ensures that the aperture opening, flow in and flow
out data is written out to the results file.
Viewing the results: Ensure that
you have created an "Output Selection" and that you have placed the aperture
surfaces in the selection. (You can drag and drop a zone on the surfaces list of
the output selection and this will add the zone and all the output surfaces for
that zone to the selection.) Then all you need to do is view that aperture
opening, flow in or flow out in the Output Filter.
The diagram above illustrates a vertical section through an awning and a
window. The values that need to be entered into a feature shade are as follows:
- Surface Height = length oAoB
- Surface Width = window width
- Overhang Depth = length oCoD
- Overhang Offset = length - oAoD (negative offset)
- Overhang Transmittance = awning transmittance
Feature shading only shades the surface of the building
element it is applied to.
The diagram above illustrates a vertical section through external horizontal
slats and
a window. The values that need to be entered into a feature shade are as follows:
- Surface Height = length oAoB
- Surface Width = window width
- Overhang Depth = length oCoA
- Overhang Offset = 0 (zero)
- Overhang Transmittance = slat transmittance
The slats will always be perpendicular to the shaded surface.
Feature shading only shades the surface of the building element it is applied
to.
The diagram above illustrates a horizontal section through external vertical
fins and
a window. The values that need to be entered into a feature shade are as follows:
- Surface Height = height of the window
- Surface Width = length fAfB
- Left and Right Fin Depth = length fCfA
- Left and Right Fin Offset = 0 (zero)
- Left and Right Fin Transmittance = fin transmittance
The fins will always be perpendicular to the shaded surface.
Feature shading only shades the surface of the building element it is applied
to.
The diagram above illustrates a vertical section through external horizontal
inclined slats and
a window. The values that need to be entered into a feature shade are as follows:
- Surface Height = length oAoB
- Surface Width = window width
- Overhang Depth = length oCoD
- Overhang Offset = -oAoD (negative offset)
- Overhang Transmittance = slat transmittance
A feature shade with a negative offset can only be applied to
an External vertical surface. Feature shading only shades the surface of the
building element it is applied to.
This problem occurs when you try and run the simulation for a day that does
not have shading data after the shadow calculations have been run. For example
this will occur if you run the shadow calculations for day 100 to day 200 and
subsequently run a simulation for day 1. There is no shading data for day 1 so
it fails to load. This problem can also occur if the step size used during the
shadow calculations is large ie. greater than 30.
If Inter Zone Air Movement is used to move air into a zone and the air is to
escape to the outside through an aperture this error can occur if the aperture
is very small or the Inter Zone Air Movement value is very large.
Also ensure that in the Building Summary the Wind Pressure Coefficients File
text box is clear. That is unless you have run a CFD analysis to calculated wind
pressure coefficients that you would like to use and have created the relevant
file in the correct format.
This error occurs when you have used Inter Zone Air Movement to move air
into a Zone but have not used Inter Zone Air Movement to move the air out of a
Zone or allow the air to escape to outside by another means ie. an open
aperture.
The TSD file (Results Viewer File) contains the path of the Building
Simulator File (TBD File) that created it. This path can be seen in the Results
Viewer when the Simulation Data tree view item is selected
The error occurs when the macro tries to use this path to open the TBD file
to retrieve some data but can not find the file at the stated path. The file has
either been deleted and is no longer present, renamed and therefore the path
held in the TSD file is now incorrect or moved to another directory.
To correct the path held in the TSD file select it in the Tas Manager file
window. Right click the mouse and from the context menu select the "TSD...Fix
TBD Path" item. An open file dialog will appear asking for the TBD file.
Navigate to this file select and click Open. The file path in the TSD will now
have been set to the path of the file you just selected. Note that if the TBD
file is found at the path held in the TSD file that the open file dialog will
not appear.
The Surface in the Zone indicated in the error message will
have an area greater than 49.5% of the total zone surface area. This causes
problems for the radiant calculation and therefore the simulation will not run.
To fix the problem in the 3D Modeller split the large surface
up into two using an additional building element.
Copyright © 2006 EDSL. All rights reserved.
Revised: 01/03/06.
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