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How can I model a double or triple pane window in Openstudio?

asked 2015-10-19 15:00:14 -0500

Maryam gravatar image

updated 2015-10-19 16:23:27 -0500

Hello all,

I am trying to model a double pane window which I have the optical properties including solar heat gain and visible transmittance. However, I cannot find out how to define the number of panes and the gas between for a window in Openstudio. It is neither under the simple glazing window system nor under the glazing window materials. So I was going to define the glazing window materials and the gas window materials (under materials) and then use them as layers(under construction)for a specific window. However, the problem is that I have the properties for the whole window, not every single pane. So, I would appreciate if you let me know the right way for doing this.

P.S. I am using Opentstudio for Radiance simulation.

Thanks, Maryam

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answered 2015-10-19 19:07:00 -0500

You can also download them from BCL:

  1. Components & Measures > Find Components
  2. Browse to Construction Assembly > Fenestration > Window
  3. Type "triple" or whatever in search bar > ENTER
  4. Click on a construction to see the properties on the right side
  5. Click the check box, then download

image description

  1. Close the dialog
  2. Library (right column) > Constructions you should see the one you downloaded
  3. Drag it into your Construction Set

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Hi, I've created my building model with an existing Fixed Window 3.12/0.40/0.31 but I need to replace that with a double glazing window. I followed the steps above to download "double glazing" but I didn't know how to replace it with the existing window. Can you please explain to me how to do that? Thanks

a.hemaida gravatar image a.hemaida  ( 2020-03-02 07:47:39 -0500 )edit

answered 2015-10-19 22:44:28 -0500

updated 2015-10-20 18:42:41 -0500

As @Maryam is specifically using Radiance in OpenStudio, I should mention that there is currently a bug (fixed for the next iteration release) in the OpenStudio-Radiance translator that prevents it from working properly on multi-layered constructions. (!)

@Maryam also notes that she has properties for the whole assembly and not the individual elements of the IGU. This is actually perfect for the simple glazing material; just use these properties to make a simple glazing material, apply that single material to a construction, and apply that to your triple pane windows.

Good luck...


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Thank you Rob. Just to make sure that I am getting this doesn't matter that I cannot define the number of panes and the gas between them in simple glazing material?

Maryam gravatar image Maryam  ( 2015-10-20 11:50:02 -0500 )edit

Yep, if you're using the WindowMaterial:SimpleGlazingSystem object, you enter the performance values (SHGC, VLT, and U-value) for the entire IGU into this one material, and make a construction consisting of this single layer to represent the whole system. P.S. The multi-layer translation bug was fixed today, so starting with the next iteration release of OpenStudio you'll be able to follow the other suggestions here. =)

rpg777 gravatar image rpg777  ( 2015-10-20 18:39:53 -0500 )edit

answered 2015-10-19 17:05:46 -0500

I think you can create every layer for the glazing under under glazing windows materials. Then if you go to construction tab you an create a new external windows construction and add the layers that you created from my model tab from your right side. Another option is to create a Simple Glazing System Windows Material and input the total VLT and SHGC from the triple window. If you have those properties.

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Asked: 2015-10-19 15:00:14 -0500

Seen: 1,571 times

Last updated: Oct 20 '15