Re: [EnergyPlus_Support] Daylighting Control

[Jia Hu <hujia06@xxxxxxxxx>]

The reason is likely that you setup timestep but report hourly value. For example, if lighting is off above 500lx.  at 0-3min, the illumin. is high(800lx), but at 30-60min, the illuminance is low (200lx), If you report hourly value , you will see the illuminance is 500lx. But you can not say there is no light during this hour because lighting is on at 30-60min.   if you report timestep value, you will see which timestep there is lighting.

 

So, why you said the illuminance is high in March is that  the average or total is high rather than each timestep of an hour is high.,

 

On Fri, Apr 2, 2010 at 7:14 AM, rasha mahmoud <roushaa_84@xxxxxxxxx> wrote:

 

Can anyone help me please?

I made a daylighting control in which hourly results data of daylighting and lighting electricity are reasonable also monthly daylight is also reasonable where it is low in January, higher in February and keeps increasing smoothly till it reaches August then it starts to decrease smooothly. However, the monthly lighting electricity is fluctuating where it is high in January, decreases in February and increases back again in March and so on. Please can anyone tell me if that is normal?

Please help me as I'm trying to learn Energy Plus.  What I understand that the lighting electricity is supposed to be dependent on and to reflect  the daylighting if we make a lighting control.

 

Please advise me and Thank you very much 

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