Question-and-Answer Resource for the Building Energy Modeling Community
Get started with the Help page
Ask Your Question
1

Interior Image Luminance and Glare Spot (Radiance)

asked 2015-06-25 19:21:07 -0500

Sara_M gravatar image

updated 2015-11-12 14:29:41 -0500

Dear all,

I am wondering if I can set a camera inside the model and run Radiance within OpenStudio and get interior luminace with colorful Glare spots.

edit retag flag offensive close merge delete

1 Answer

Sort by ยป oldest newest most voted
2

answered 2015-06-29 11:56:48 -0500

Sounds like you are looking to create images for analysis with either evalglare or findglare. Unfortunately we do not currently support image generation with Radiance in OpenStudio.

The OpenStudio Radiance support does have a Glare Sensor object, which you can place in your OS model to define view points. Currently these defined points calculate vertical illuminance, and OpenStudio will calculate Daylight Glare Probability-simplified (DGPs) for all these views, producing a simple report in the Radiance output directory. As DGPs is based on the integrated hemispherical flux and therefore has no spatial component, the metric is fairly limited.

We believe that dynamic daylight metrics such as Continuous Daylight Autonomy (DAcon) and Useful Daylight Illuminance (UDI) do a fair job of indicating where designs are potentially admitting too much daylight, and are reasonable proxies for simplified glare analysis. For a rigorous glare evaluation ideally one would render an angular hemispherical fisheye view, and pass that to Evalglare for evaluation and derivation of DGP. In the next major OpenStudio release we will export the Glare Analysis Points as Radiance angular fisheye views as part of the OpenStudio model translation, but it will still be up to the user to perform their own image generation and analysis.

edit flag offensive delete link more

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

 



Question Tools

1 follower

Stats

Asked: 2015-06-25 19:21:07 -0500

Seen: 126 times

Last updated: Jun 29 '15