[Equest-users] Seasonal variation in lighting consumption in monthly peak demand

Rebecca ying ellaying_wong at hotmail.com
Thu Sep 25 20:06:28 PDT 2014

Hi everyone.


I am simulating a residential building.

In the simulation result of the proposed
building, the Area Lights consumption from May to September is very low
comparing to that in other months. (With attachment) However, in the baseline
building simulation result, the Area Lights consumption keeps average in every
month. (With attachment)


The lighting schedules used for both
buildings are the same. The only difference is the space lighting loads (W/ft2)
in two buildings. 

And, in my design, there are 2 seasons in
both buildings. (Summer: 07/April to 06/Oct & Winter: other months). The
interior lighting hourly profiles by season for winter and summer are the same.

So the lighting consumption should be
average in all months. (Right?)

But a variation occurred!! Did anyone know
any possible reason about that? 


Thanks so much.



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