daylighting in equest

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Dear Members

On my second day, I have now got a hang of the basics of the
eQuest s/w. After running a few sample simulations of a very basic building
I noticed the following:

- My fully air conditioned building with a 30% WWR returned a total
consumption 1545 units of energy and my lighting was 149 units. Then I
removed all windows making the WWR 0%, my total total consumption went down
to 1520 units but area lighting was still 149 units. How does eQuest
account for daylighting? If my building has no windows or skylights then
the lights have to function overtime, so how is my area lighting
consumption still the same? The gains that I make in the cooling; should
that not be mitigated with the lack of daylight?

- I understand that for multi-storey buildings, eQuest considers only
the top, ground and all middle floors are only considered to be one floor
and the result is simply multiplied to show the final performance. How does
that work? Every floor in a building might have different functions,
different internal loads, systems etc. How can equest only model one floor
and multiply the result. Would this not be inaccurate?

Thanks in advance
Yusuf Turab

Yusuf Turab
Managing Director
IGBC Accredited Professional & LEED Green Associate
Y T Enterprises
18 A, Hamsa Layout ¦ R.S Puram ¦ Coimbatore - 641002

Tel: +91 936 310 2703
Fax:<

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Hi Yusuf
did you activate the daylight sensor of each space?
only then equest will model the savings from daylighting.

Deepika

DEEPIKA KHOWAL
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Hi Deepika

How do I activate the daylight sensor? any thoughts on my
second question?

Regards
Yusuf Turab

Yusuf Turab
Managing Director
IGBC Accredited Professional & LEED Green Associate
Y T Enterprises
18 A, Hamsa Layout ¦ R.S Puram ¦ Coimbatore - 641002

Tel: +91 936 310 2703
Fax:<

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Yusuf,
You may have to model all other intermediate floors if each floor has different functionality, systems and loads. The multiple floor option is only useful if you have typical functionality, internal load and system type.
Regards,
Yuvaraj

Yuvaraj Saravanan, PE, LEED BD+C

Yuvaraj Saravanan's picture
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go to space-daylight-daylighting controls"yes"

to ans yr second question, u should use floor multiplier only when you have
identical floors(typically in high rise offices)
if you have different loads, activities per floor, then you should create
them different.

hope this helps.

Deepika

DEEPIKA KHOWAL
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