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.
Regards,
Ella
Rebecca,
Are there any daylight sensors mistakenly placed on your model?
Dionisio
Em sexta-feira, 26 de setembro de 2014, Rebecca ying <
ellaying_wong at hotmail.com> escreveu:
Is the May-Sep drop you're seeing in consumption or peak demand? If it's in
peak demand then it's possible that you are seeing a drop in the
contribution of lighting to coincident peak demand because the time of day
of the peak has shifted in your proposed building compared to your baseline
building.
I suggest looking at the PS-E report, where you can see the max kW for each
end use for each month (non-coincident) as well as the contribution for
each end use to the coincident peak kW each month. You might see that the
coincident peak is at a different time from the lighting peak.
If the drop is in consumption rather than peak demand, then I suppose
you'll need to dig further...
Regards,
Erik
*Erik Kolderup, PE, LEED AP*
erik at kolderupconsulting.com | 415.531.5198 | www.kolderupconsulting.com