[EnergyPlus_Support] Re: Daylighting in Energy Plus

["Liam" <liambrn@xxxxxxxxx>]

You can produce a rectangular array of data points at which the illuminance is reported.  I recommend doing it through IDF Editor, but here's an example.  The only limitation is that the illuminance reported is from daylight only, but it sounds like that's what you're after.  The MAP file contains the illuminance values for each timestep.  There's a max grid size of 10 by 10.  Keeping this on the lower end seems to keep simuations fast. 

Output:IlluminanceMap,
    Illuminance Map,         !- Name
    MAIN,                    !- Zone Name
    0.8,                     !- Z height {m}
    0.5,                       !- X Minimum Coordinate {m}
    23.5,                      !- X Maximum Coordinate {m}
    10,                      !- Number of X Grid Points
    0.5,                       !- Y Minimum Coordinate {m}
    4.5,                       !- Y Maximum Coordinate {m}
    5;                      !- Number of Y Grid Points

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, rasha mahmoud <roushaa_84@...> wrote:
>
> Dear all,
>  
> I have exported a file from Design Builder to  Energy Plus and I wanted to calculate the natural daylighting or illuminance in lux. Can Energy Plus generate that output? What can I add in the input text file? Please help. 
> Thank you very much
>




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