Modeling External Lighting

[Mario]

Good day Everyone and Happy new year,

I would like to ask about the proper way to model External Lighting in IES.
Is there a standard way that is applicable to all models or is it customizable according to each model ?

Thanks & Regards.
Mario

[JosephG]

For what purpose do you want to model external lighting? Is it for its effect on internal gains / internal light levels?

[Mario]

No, it is to account for its energy use in the model.

[JosephG]

If it is to account for its energy use, just add it externally. IESVE Apache is there to model internal environments and what kind of energy / power / controls is required to maintain this internal environment; external lighting does not contribute to the internal environment, so just add it externally.

If you desperately wish to add it, create a room underground or somewhere completely out of the way and not connected to your building, remove any HVAC controls, make it as small as possible, add a big openable window that is open continuously, and add all the lighting you want. But I still think it is best to just add it separately, you can easily calculate how much power it will consume.

[Mario]

Thanks for your help Joseph.