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A few of places to begin:<br><br>
1. Does the factory actually have three spaces - conditioned,
plenum and space under roof? Or is the plenum directly under the
roof? The model should represent the building. <br>
2. What are the constructions between the spaces? Is there a
ceiling in the factory? What is its R-value. <br>
3. How did you define the light fixture sensible heat
distribution? <br>
4. How does the model HVAC system represent the return air path:
directly, by duct, or by plenum?<br><br>
Read the LS-B reports for each of the space to see if internal conduction
is represented. The space beneath the roof should show and change
in heating/cooling loads when you change the reflectivity.
<br><br>
Re. Supply air - do you mean the self-sized supply air flow as
reported in SV-A? This air flow changes based on numerous
factors. Changing the reflectivity would have negligible effect on
the self-sized peak air flow, especially if you have defined a Min Design
Flow in the Air-Side HVAC Zone Parameters. <br><br>
Or do you mean the hourly supply air flow throughout the year?<br><br>
The manual is an excellent place to start for many of these
questions.<br><br>
At 06:46 AM 21/05/2012, Uday Gorre wrote:<br>
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<font face="Calibri" size=2 color="#1F497D">Hello all, <br>
<br>
I am modeling a assembly factory of 40000 sq .ft. floor area with total
height of 19.6 ft and pitched roof (8 degrees). Conditioned height is 10
ft only. When I used multi level space option in eQUEST (entered 10 ft is
the conditioned height), by default software creates three spaces (named
as conditioned space, Plenum space and under roof). After completion of
simulation, LS-C report (Building Peak Load Component)is not
included roof conduction load (My observation was plenum and conditioned
space both are at same temperature therefore no heat transfer between
these two ). </font><font color="#FF0000">How much is the plenum space
temperature I have to consider ? and also Where this plenum load
accounted in simulation?</font><font color="#1F497D"> . When I changed
any modification in the roof construction by using reflective surfaces
there was no change in supply flow (I think this was because of no
reduction in load in the LS-C report). </font><font color="#FF0000">How
this roof conduction load reduction effected in the conditioned space
?.<br>
</font><font face="Calibri" size=2 color="#FF0000"> <br>
</font><font face="Calibri" size=2 color="#1F497D">Do such loads
(plenums) get directed straight back to the central air handler, or do
they also partially interact with the zones as well?<br>
</font><font face="Calibri" size=2 color="#FF0000"> <br>
</font><font face="Calibri" size=2 color="#1F497D">Can anybody please
help me in this issue.<br>
<br>
Thanks ®ards <br>
<br>
Uday Kumar<br>
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>><br>
Christopher Jones, P.Eng.<br>
Suite 1801, 1 Yonge Street<br>
Toronto, ON M5E1W7<br>
Tel. 416-203-7465<br>
Fax. 416-946-1005<br>
email cj@enersave.ca<br>
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