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<DIV><FONT face=Arial size=2><SPAN
class=144431213-16072009>Hello,</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=144431213-16072009></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=144431213-16072009>
The building that I am modeling consists of three floors. Because the 3rd
floor significantly differs from the 1st and 2nd floors in its shape and size, I
have modeled the 1st and 2nd floors as one shell (discussed in my previous
e-mail, titled "Disappearing components") and the 3rd floor as a separate shell
and project altogether.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=144431213-16072009>
The present e-mail concerns the modeling of the 2nd floor roof. The
portion of the modeled roof directly beneath the 3rd floor should be
adiabatic. The remainder of the 2nd floor roof is constructed in various
ways with insulation of varying thickness and covered in some places by deck, in
other places by grass, in other places by nothing special, and in some places by
mechanical equipment. Were this a simple shell, I would be inclined to
enter a single set of heat-transfer properties of the roof that results from a
manually calculated average of values weighted by area. However, the 2nd
floor includes several rooms and HVAC zones, each of which is under a specific
portion of the actual 2nd floor roof and/or under the 3rd floor.
Therefore, the simplification that I described above seems a bit dicey.
Does anyone know of a way to properly model (in eQuest) a roof comprised of such
multiple constructions?</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=144431213-16072009>
Thank you in advance for any advice.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=144431213-16072009></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=144431213-16072009>Lars Fetzek,
EI</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=144431213-16072009>Phoenix Engineering
Group</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=144431213-16072009>Tampa,
Florida</SPAN></FONT></DIV></BODY></HTML>