Re: [EnergyPlus_Support] Fenestration ratio by jEPlus

Below the highlighted value is how you can create a window to wall ratio, it will cause a warning use full interior and exterior with reflections solar gain, the trick is that you must start with one- then multiply- so you would start with your smallest window size for study then multiply from there, so starting with 10% WWR for your initial window. About the parametric vertices's- unless you kept with square geometry you would likely get convex zone warnings. The geometry transform feature- in combination with the zone multiplier, fins and overhangs might work for your use. It is impressive that you are changing the wall thickness parametrically, and I think would be possible to copy and paste a few versions of the same geometry to run, as I have done so with a small model I have- changed all of the vertices's that is.

On Mon, Aug 6, 2012 at 4:51 PM, Jeremiah Crossett <jcrossett@xxxxxxxxxxxxxxx> wrote:

Window to wall ratio can be possible using the window multiplier-this can be used to multiply the windows start with a window at say 30% WWR, then use search string like @@WWR@@, for discrete parametrics like {.33,.67,1,.1.3,1.67,2,2.33,2.67,3}
Also you could use zone multipliers to multiply to copy your zone, or geometry transform for aspect ratio, or use local shading for window shades.

Jeremiah D. Crossett | Senior Analyst | Phase Change Energy Solutions
120 E. Pritchard St. | Asheboro, NC 27203 | Mobile 503-688-8951

www.phasechange.com

On Mon, Aug 6, 2012 at 4:29 PM, Amir <amirhosein_ghoreishi@xxxxxxxxx> wrote:

Hello,

I'm using jEPlus for a parametric study. For wall and slab thicknesses' variations, I put related search strings under corresponding materials in the .idf files and it works just fine; however, for window-to-wall ratio, I just don't seem to find where to place its search string. In other words, in the .idf files, where could I change the window-to-wall ratios?

Another question, if I had the whole building model as a parameters and wanted to see the impact of diffident interior layouts, e.g, on building energy performance, how could I use jEPlus for this task?

Many thanks

Name	Block1:Zone1_Wall_5_0_0_0_0_0_Win
Surface Type	Window
Construction Name	Window
Building Surface Name	Block1:Zone1_Wall_5_0_0
Outside Boundary Condition Object
View Factor to Ground	0.5
Shading Control Name
Frame and Divider Name
Multiplier	1
Number of Vertices	4
Vertex 1 X-coordinate	-4.64214827
Vertex 1 Y-coordinate	-4.049124475
Vertex 1 Z-coordinate	0.84
Vertex 2 X-coordinate	-0.41614827
Vertex 2 Y-coordinate	-4.049124475
Vertex 2 Z-coordinate	0.84
Vertex 3 X-coordinate	-0.41614827
Vertex 3 Y-coordinate	-4.049124475
Vertex 3 Z-coordinate	1.986694194
Vertex 4 X-coordinate	-4.64214827
Vertex 4 Y-coordinate	-4.049124475
Vertex 4 Z-coordinate	1.986694194