Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
@OS_4design, unfortunately -- and contrary to appearances in the SketchUp plugin -- you cannot spatially define luminaires in OpenStudio. Well, you can, but all that gets rolled up to the actual simulation models is a load schedule. We regret this confusing presentation.
The plan was to leverage Radiance for spatially honest lighting layout representations, and to answer your question Radiance would be requires for this, EnergyPlus is completely unaware of spatial luminous distribution. The plan was to be able to support this in OpenStudio by placing luminaires, associating a photometric distribution (IES) file to each one, and doing an electric lighting simulation with Radiance. We just never got there.
The OS:Luminaire object is still useful in the sense that you can use them to define your lighting loads at that level, but they are "flattened out" to these simple space-level lighting loads. An ambitious user could use the API to write some sort of luminaire-to-Radiance exporter, just sayin'. ;)
| | 2 | No.2 Revision |
@OS_4design, unfortunately -- and contrary to appearances in the SketchUp plugin -- you cannot spatially define luminaires in OpenStudio. Well, you can, but all that gets rolled up to the actual simulation models is a load schedule. We regret this confusing presentation.
The plan was to leverage Radiance for spatially honest lighting layout representations, and to answer your question Radiance would be requires required for this, this; EnergyPlus is completely unaware of spatial luminous distribution. The plan was to be able to support this in OpenStudio by placing luminaires, associating a photometric distribution (IES) file to each one, and doing an electric lighting simulation with Radiance. We just never got there.
The OS:Luminaire object is still useful in the sense that you can use them to define your lighting loads at that level, but they are "flattened out" to these simple space-level lighting loads. An ambitious user could use the API to write some sort of luminaire-to-Radiance exporter, just sayin'. ;)
