add glazing by ratio issue and shade generator error

We have some students got the following errors using the GH file attached:

1. the windows generated by glazing ratio is strange. there is window split into two triangles where it supposed to be a single rectangle. There is additional triangular window for non-rectangle wall surface

2. the error of EP simulation indicate that:

** Severe ** WindowMaterial:Blind="DEFAULTBLINDSMATERIAL_ZONE_A_SRF_1_GLZ_0", Illegal value combination.
** ~~~ ** Blind to Glass Distance is less than half of the Slat Width

However, in the GH file, the distance of blind to window is set as half of the blind depth.

Does this mean that the Window Shade Generator component doesn't work with triangular window surface?

Hope to have your advice!

Thanks!

Attachments:

glazing by ratio issue.gh, 598 KB

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Replies to This Discussion

Permalink Reply by Abraham Yezioro on August 24, 2015 at 1:32am

Grasshope,

if you set the distToGlass to 0.34 it will run. As you pointed in the file, this distance must NOT be smaller than half of the blind depth. But it doesn't mean that half a distance will work. Specially with inclined walls. Can't explain why (didn't enter into the depth of this), but this is the situation.

Interesting that after setting this minimal distance the material issue dissapeared.

See attached: From your geometry you are getting weird artifacts in one wall, causing very narrow and triangular windows with very thin shades. I would fix the original geometry.

Probably Chris will explain the triangles in te facade. Of course it is related to the geometry of the walls.

-A.

Permalink Reply by Grasshope on August 24, 2015 at 9:12am

Thank you for the suggestion, Abraham! I've informed the students accordingly.

I also noticed the narrow windows created, and it is because the north facing walls of the two adjacent zones are not aligned, leaving a narrow stretch of wall surface.

Permalink Reply by Chris Mackey on August 26, 2015 at 10:33pm

Grasshope,

As Abrham showed, you can run a window of any shape with blinds and it is just that E+'s simplified model of blinds does not work if you put them too close to the glass (or more than a meter away).

Glad that you figured out the issue with the trianges. The general principle holds that, the cleaner your geometry that you input into Honeybee, the cleaner all future geometric operations will be off of that geometry. To give you the power to minimize triangles for simple geometries like that here, I just implemented a new feature on the glazing by ratio component. If you plug in quadrilateral surfaces with "breakUpWindow" set to False, you will get just one window for each surface:

If you set "breakUpWindow" to True, you get a triangle with rectangles and subsequently have the ability to adjust the window and sill height on the rectangles: