Dear Alexis,
I will say that the internal analysis methods (split flux) is not entirely accurate. I am wondering about your radiance export please explain how they are different.
Tim Metcalfe
Kalwall Corporation
Daylight Modeling Group
1111 Candia Road
Manchester, N.H. 03105
1(800)258-9777 X4483
P Please consider your environmental responsibility before printing this e-mail
···
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Dear Alexis
I would like to add to this topic with our findings that large differences in daylight factor calculations exist between the different versions of Ecotect.
Best regards
Saskia Gabriël
PhD candidate in architecture
Design Sciences
Artesis University College of Antwerp Belgium
···
From: [email protected] [mailto:[email protected]] On Behalf Of Tim Metcalfe
Sent: maandag 22 november 2010 16:27
To: [email protected]
Subject: [Radiance-general] ECOTECT
Dear Alexis,
I will say that the internal analysis methods (split flux) is not entirely accurate. I am wondering about your radiance export please explain how they are different.
Tim Metcalfe
Kalwall Corporation
Daylight Modeling Group
1111 Candia Road
Manchester, N.H. 03105
1(800)258-9777 X4483
P Please consider your environmental responsibility before printing this e-mail
________________________________
This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited.
Dear All,
@ saskia:
if the results are different, which version should i trust?
@ Kalwall:
I've got my 3d model in Ecotect, I export my model to radiance (the grid in fact) , run the calculation and display results in Ecotect.
My model is a large floor for an office, one part of this office can't receive any external lights, my room is 30 m depth with only one side (SE) with windows.
With Ecotect v5, in the back of the room i've 0.2 where with Ecotect 2011 i've 3.2 for the DF.
Regards,
Alexis
···
From: [email protected]
To: [email protected]
Date: Mon, 22 Nov 2010 17:33:07 +0100
Subject: [Radiance-general] RE: ECOTECT
Dear Alexis I would like to add to this topic with our findings that large differences in daylight factor calculations exist between the different versions of Ecotect. Best regards Saskia Gabriël
PhD candidate in architecture
Design Sciences
Artesis University College of Antwerp Belgium From: [email protected] [mailto:[email protected]] On Behalf Of Tim Metcalfe
Sent: maandag 22 november 2010 16:27
To: [email protected]
Subject: [Radiance-general] ECOTECT Dear Alexis, I will say that the internal analysis methods (split flux) is not entirely accurate. I am wondering about your radiance export please explain how they are different. Tim MetcalfeKalwall CorporationDaylight Modeling Group1111 Candia RoadManchester, N.H. 031051(800)258-9777 X4483P Please consider your environmental responsibility before printing this e-mail This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited.
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if the results are different, which version should i trust?
None. Never 'trust' a software. Always try to understand what's going on
and why the results are as they are. If you expected something else (from
experience or from a previous test calculation) then you should get
suspicious and investigate what's different.
I've got my 3d model in Ecotect, I export my model to radiance (the grid in
fact) , run the calculation and display results in Ecotect.
I'm sure you export also the geometry; otherwise you wouldn't be able
to run a Radiance calculation. Are you starting the Radiance commands
manually or is everything done 'behind' Ecotect?
When Ecotect exports to Radiance it creates a *.bat file that contains
the commands for Radiance. Can you locate this file and the other
Radiance files (*.rad and *.rif) for both exports?
My model is a large floor for an office, one part of this office can't
receive any external lights, my room is 30 m depth with only one side (SE)
with windows.
With Ecotect v5, in the back of the room i've 0.2 where with Ecotect 2011
i've 3.2 for the DF.
From the description of the room I'd say that 3.2% DF are way out. Even
0.6 seem quite high if the only windows are 30 meters (!) away. However,
I don't know the room reflectances or the size of the window.
When you import the DF results back into Ecotect and show them as
colour plots does the distribution seem right in both cases (bright near
the window, continuous drop to the back)? Are there any bright areas
where they shouldn't be?
Regards,
Thomas
···
On Mon, Nov 22, 2010 at 11:49 AM, alexis Loubeyre <[email protected]> wrote: