Ecotect

Reply
*Expert Elite*
aschneider1
Posts: 35
Registered: ‎01-11-2011
Message 1 of 7 (2,726 Views)
Accepted Solution

Daylight Factor is soooooooooooooooo wrong!!!

2726 Views, 6 Replies
03-09-2011 05:03 PM

I have been getting the craziest Daylight Factor values!  What should be 1-3% is coming out 14-54%!  Is there a setting that could have been changed somewhere to change my values?  THanks!

Adrianna Schneider, LEED AP
AEC Solutions Engineer

:

Please mark Accept as Solution if your question is answered. Kudos gladly accepted.

forgive the delay, Display/Surface Normals or ctrl+F9 you can see a vector that must point outside the zone. You can select the face/surface and Modify/Reverse Normals or with ctrl+R change that to the other option. With my little experience, we must review all imported model, and with overlapping windows/doors.

Hope i´ve been helpfull. Bye 

Thank you all for your responses!  After doing an Inter-Zonal Calculation, I was able to fix the problem...but I certainly appreciate all the feedback! 

 

Adrianna

Valued Contributor
arqyt
Posts: 94
Registered: ‎08-31-2010
Message 2 of 7 (2,687 Views)

Re: Daylight Factor is soooooooooooooooo wrong!!!

03-13-2011 12:02 PM in reply to: aschneider1

Try to verify the normal vector of the wall inside, i think it must be reverse.

 

Jose M Carralero.
ArqyT
*Expert Elite*
aschneider1
Posts: 35
Registered: ‎01-11-2011
Message 3 of 7 (2,677 Views)

Re: Daylight Factor is soooooooooooooooo wrong!!!

03-14-2011 09:59 AM in reply to: arqyt

I'm sorry, I am not sure where to do that...can you please point me in the right direction?

Adrianna Schneider, LEED AP
AEC Solutions Engineer

:

Please mark Accept as Solution if your question is answered. Kudos gladly accepted.
Contributor
Boesselmann
Posts: 15
Registered: ‎01-16-2011
Message 4 of 7 (2,658 Views)

Re: Daylight Factor is soooooooooooooooo wrong!!!

03-16-2011 01:49 AM in reply to: aschneider1

Dear Schneider

from my experience the daylight simulatin within Ecotect is not very reliable, however your results are really far off.

If you should not have done this simulation by exporting the model to Radiance try to do that.

 

regards

New Member
tasleemkhan74
Posts: 2
Registered: ‎03-17-2011
Message 5 of 7 (2,637 Views)

Re: Daylight Factor is soooooooooooooooo wrong!!!

03-17-2011 11:44 PM in reply to: Boesselmann

I have been working in Ecotct for a long time. Acoording to my observation, if we calculate daylight factor in daysim, it gives absolutely wrong results. However, the same i have done in radiance as well to check out the result, which always give me the perfect result.

 

So, I would suggeast you to use radiance to perform daylight simulation not in daysim.

Valued Contributor
arqyt
Posts: 94
Registered: ‎08-31-2010
Message 6 of 7 (2,600 Views)

Re: Daylight Factor is soooooooooooooooo wrong!!!

03-22-2011 06:00 AM in reply to: aschneider1

forgive the delay, Display/Surface Normals or ctrl+F9 you can see a vector that must point outside the zone. You can select the face/surface and Modify/Reverse Normals or with ctrl+R change that to the other option. With my little experience, we must review all imported model, and with overlapping windows/doors.

Hope i´ve been helpfull. Bye 

Jose M Carralero.
ArqyT
*Expert Elite*
aschneider1
Posts: 35
Registered: ‎01-11-2011
Message 7 of 7 (2,597 Views)

Re: Daylight Factor is soooooooooooooooo wrong!!!

03-22-2011 10:31 AM in reply to: arqyt

Thank you all for your responses!  After doing an Inter-Zonal Calculation, I was able to fix the problem...but I certainly appreciate all the feedback! 

 

Adrianna

Adrianna Schneider, LEED AP
AEC Solutions Engineer

:

Please mark Accept as Solution if your question is answered. Kudos gladly accepted.
Announcements
Are you familiar with the Autodesk Expert Elites? The Expert Elite program is made up of customers that help other customers by sharing knowledge and exemplifying an engaging style of collaboration. To learn more, please visit our Expert Elite website.