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Re: [EnergyPlus_Support] jEPlus & Window-to-wall ratio



Jason, 
This approach is much better, as it would allow daylight to be analyzed (a large portion of the benefits of windows), and would allow glare controlled blinds (the shading control I think best represents the way human controlled blinds would work in a real building) 

Could you please give a narrative of how to use your parametric commands? I have wondered for a while how the vertices's work> my current assumption is that all vertices's start at 0 so negative values to the Y go left positive go right, for X negative go up positive go down and Z is depth- am I anyware  close in my assumption? 


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

  






On Thu, Aug 30, 2012 at 2:33 PM, Jason Kirkpatrick <jason.alan.kirkpatrick@xxxxxxxxx> wrote:
 

I did a similar type of study on WWR by writing the window coordinates using the parametric variables directly in energyplus.

A different approach, but you might be able to get what you want by combining these approaches?

FenestrationSurface:Detailed,
    f1:PerimeterN_NorthWindow,  !- Name
    Window,                  !- Surface Type
    ExteriorWindow,          !- Construction Name
    f1:PerimeterN_NorthWall, !- Building Surface Name
    ,                        !- Outside Boundary Condition Object
    ,                        !- View Factor to Ground
    ,                        !- Shading Control Name
    ,                        !- Frame and Divider Name
    ,                        !- Multiplier
    4,                       !- Number of Vertices
    =$Length-0.05, =$Width, =$Height/2+$WWRNorth*$Height/2,
                                        !- X,Y,Z  1 {m}
    =$Length-0.05, =$Width, =$Height/2-$WWRNorth*$Height/2,
                                        !- X,Y,Z  2 {m}
    0.05, =$Width, =$Height/2-$WWRNorth*$Height/2,
                                        !- X,Y,Z  3 {m}
    0.05, =$Width, =$Height/2+$WWRNorth*$Height/2;
                                        !- X,Y,Z  4 {m}





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