I wish to find out how robustly does the Ecotect daylighting engine handle features such as Lighthshelves and light transfer through interior glass walls and windows.
I am attaching two models and their results from which it seemed that Ecotect's own daylighting engine did not seem to have any effect of the interior light shelves.
On the second test model I modeled an interior window using the method described in the help section, but it seemed to me that the results looked a little weird when I tried interpreting them.
I need to model these two features to ultimately model daylight factor for these spaces. I would appreciate feedback if these features and configurations should be modeled using Radiance rather than Ecotect, or if Ecotect can handle these configurations, then what is the most appropriate way of modeling these.
Thanks
Nik
| Attachment | Size |
|---|---|
| Test_5_Lightshelves.eco | 228.71 KB |
| Test_InternalWindow.eco | 134.47 KB |
| Test_5_Daylight_Levels.jpg | 305.21 KB |
| Internal-Window.jpg | 390.7 KB |
lightshelves
I've played around with configurations like this a little bit myself. The thing to remember is the overcast design sky used for daylighting will reduce the effect of the light shelves. I have found that if you change your grid from a horizontal axis to a vertical axis you get a better indication of what the light shelves are trying to do, though I haven't seen them actually extend the distance light is reflected into the space (using the ECOTECT daylighting calc). Also, the solar ray tool may help, though it is somewhat limited in it's feedback in the version I'm using and I haven't had the time to give scripting a go quite yet.
If you end up using radiance I'd be interested in hearing if you get different results, if you don't mind posting back here.
ECOTECT Accuracy for Daylight factors and LEED Compliance
How accurate would Ecotect's daylighting engine be if we were trying to calculate the Daylight Factors for LEED compliance. LEED requires calculation at a particular time/date/month and on clear sky conditions. I maybe wrong on this but looks like ECOTECT's daylighting engine does not take these parameters into account.
I would appreciate input from the developer's also.
Also if anyone has experience for modeling daylighting simulations for LEED compliance using ECOTECT, any input would be appreciated.
I would also like to get any input if DAYSIM is a better option for doing this type of analysis but using ECOTECT as the front end.
Thanks......
I appreciate your reply and insight into this. I do have another comment posted to take this discussion further on in reference to LEED. Please feel free to comment on that posting as well.
I would recommend exporting
I would recommend exporting and running Radiance to obtain the information needed for the LEED calculation, and then importing it to Ecotect to see the results.
Regards,
Timo