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Hi Jing,<br>
It is a little difficult to tell from your explanation of what you
are doing but it doesn't seem like the correct approach to me.
eQuest will allow you to have different zones for the
conductive/thermal model and then different zone configurations for
the HVAC model. Differing constructions I do as separate zones. It
makes putting all the boxes together. All surfaces have to be
accounted for. Everything has to conduct to another zone or to the
exterior. Even if you miss a 1" strip the model will throw errors.
When you build your model I find it better to err on the side of too
many zones. Your picks of areas for zones need to initially reflect
how the building is constructed but also thinking of how the
building is going to be heated and cooled.<br>
I would split that zone you are working on into 2. Each portion
will cover the different ceiling height. Give each zone a plenum
and make it the height of the difference in the zone heights. That
will allow you to split the wall into 2 different sections and give
each one different properties. It also gives you 2 ceilings. Make
the one with the higher ceiling an air wall type boundary. Adjust
the plenum wall construction to reflect what is actually happening
at the boundary. Adjust the ceiling construction of the room/plenum
of the lower zone, delete what you don't need. Later when doing the
HVAC you can put both of these zones on the same unit. So you don't
necessarily zone a building according to the proposed HVAC system.
You have to take the discontinuities into account and add zones to
make it easier to model. Every thermal box has to be perfectly
closed or eQuest will stall on you. You are lucky it tossed warning
messages, these are clues to what you have missed. You are close.
It is really bad when you crash and don't get clues.<br>
Good luck. You seem to be coming along fine. One other tip, stay
in the detailed wizard as long as possible. Ignore windows and just
leave them as general areas until you get everything else worked
out. Save files lots so you can go back if something happens. They
are like restore points. The closer you are to the crash the less
work you lose. Plus, projects change once everyone starts looking
at the modelling results, you find more efficient ways and need to
be able to adjust your model.<br>
Bruce Easterbrook P.Eng.<br>
Abode Engineering<br>
<br>
<div class="moz-cite-prefix">On 11/9/2017 9:17 AM, Jing Hong via
Equest-users wrote:<br>
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<blockquote type="cite"
cite="mid:20171109141831.HHOY19211.toroondcmxzimta03-srv.bellnexxia.net@tordcvbicmrk02">
<div dir="ltr">Dear All,
<div><br>
</div>
<div>I built up two shells for a room with two different ceiling
heights. And then deleted the exterior walls. Now the BDL Load
File Log shows some warnings of no delayed wall, no delay
ceiling for those spaces. Should I ignore those warnings? Or
try to fix them? Am I doing correctly to deal with a zone with
different heights in this way?</div>
<div><br>
</div>
<div>Thanks,</div>
<div><br>
</div>
<div>Jing<br clear="all">
<div><br>
</div>
-- <br>
<div class="gmail_signature" data-smartmail="gmail_signature">
<div dir="ltr">
<div>
<div dir="ltr">
<div dir="ltr">
<div>PhD Candidate, LEED AP BD+C</div>
<div><span style="font-size:12.8px"><br>
</span></div>
<div><span style="font-size:12.8px">School of
Architecture and Urban Planning</span></div>
<div>University of Wisconsin-Milwaukee</div>
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