Daylight Calculation for Roof

questions regarding the handling of DIALux evo. (features, tools, options, settings)
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NJR
Posts: 4
Joined: Wed Apr 06, 2016 3:54 pm

Daylight Calculation for Roof

Post by NJR » Fri Jul 31, 2020 2:02 pm

I simply want to make the roof of a room the same material as a window and run a daylight calculation.

Why is this not possible unless I'm missing something?

Thank you in advance

Csuleiman
Posts: 1996
Joined: Wed Mar 07, 2012 3:07 pm

Re: Daylight Calculation for Roof

Post by Csuleiman » Mon Aug 03, 2020 5:32 am

Hello NJR,

In order to calculate daylight, you would have to insert a roof window, as it is daylight-relevant. Normal cut-outs in ceilings are not daylight-relevant and are therefore not taken into account in the daylight calculation.

Best regards,
DIAL Support Team

NJR
Posts: 4
Joined: Wed Apr 06, 2016 3:54 pm

Re: Daylight Calculation for Roof

Post by NJR » Mon Aug 03, 2020 5:32 pm

Why are you not able to just use the same material as a window opening on the roof for the same effect?

Csuleiman
Posts: 1996
Joined: Wed Mar 07, 2012 3:07 pm

Re: Daylight Calculation for Roof

Post by Csuleiman » Tue Aug 04, 2020 6:15 am

Hello NJR,

The calculation of the illumination takes place only in the interior and only by daylight relevant windows, which conduct the daylight inside the building. Other building openings are not considered in the calculation of daylight. Windows that are inside the building are not relevant for daylight. In most cases, DIALux automatically detects this. If necessary, you can change this setting at the window in the apertures tool.

Outside the building, the scene is only enlighted for visualization. Illumination levels are not calculated.

Please also read the following article of our DIALux evo knowledge base:

https://evo.support-en.dial.de/support/ ... 4-daylight

This is an extract from the DIALux evo version history finding on our website.

DIALux evo 6.0
• Calculation of daylight control systems - With the new DIALux evo 6, the planner can include real daylight control systems, skylights and façade elements in his daylight calculation. This includes vertical louvre blinds and textile blinds, skylights, foils and prismatic systems. The lighting designer places and configures multiple daylight system in layers. Depending on the date, time, orientation of the building and sky model DIALux calculates the daylight factor and illuminance values inside the building.

Best regards,
DIAL Support Team

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