Lighting Outputs not responding in Viper to Daylight controls

[Patrick Keeney]

Hey All,

I've been having some trouble getting the Lighting Control Input to
respond as expected in the Viper component for Diva for Grasshopper.

When I simulate my geometry with light controls on set to 500 lux, the
output from the simulations gives me 0 electrical lighting consumption
(there should still be some electrical lighting because the space is
not completely daylit). However, when I disconnect the lighting level
input and rerun the simulation, the electrical lighting levels seem to
be correct (relatively nothing at nighttime when building is
unoccupied, then higher in the day).

Does anyone have any suggestions to fix this? I've double checked my
dimensions...the footprint of the building is 15m deep (N/S
orientation) with windows on both the North and South and 25m long
(E/W) which are opaque to set up a controlled testing environment.
This should be a well daylit space, but not perfectly daylit. See
image of what I mean. I am combining this Viper simulation with Diva
to iterate through galapagos.

Any help would be great.

Thanks.

--
Patrick J Keeney
(410) 299-5627

[Jon Sargent]

Hi Patrick,

 

Can you send me the IDF Viper is generating?  (Should be in your project folder in C:\DIVA\Thermal\Grasshopper\Projects).

 

Jon

--
You received this message because you are subscribed to the Google Groups "DIVA for Rhino" group.
To post to this group, send email to diva-fo...@googlegroups.com.
To unsubscribe from this group, send email to diva-for-rhin...@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/diva-for-rhino?hl=en.

[Patrick Keeney]

Here it is Jon. Thanks for your help.

[Jon Sargent]

Patrick,

 

For some reason the lighting loads and controls aren't making it into the IDF.  If you send me your Rhino and GH files I can troubleshoot, though probably not until tomorrow.  Are you using the latest version of DIVA for Grasshopper?

 

Jon

[Patrick Keeney]

Great. Thanks again Jon. Not sure how to find the version of
Diva-for-Grasshopper that I am using, but the diva-for-grasshopper
.gha file is dated 12/13/2011.

Attached is the Rhino file and the Grasshopper file.

[Jon Sargent]

Hi Patrick,

I found the bug... Viper was once again tripped up by millimeters (of all things).  The simple fix will appear in the next revision, but in the meantime, if you change your Rhino units to meters it should work.

-Jon

[Patrick Keeney]

Much Thanks Jon. Its now working.