[Equest-users] Roof Conduction - Where are you?

[Craig Simmons]

I recently noticed this as well and decided to revive this thread to see if
anyone has insight. How do the roof conduction loads translate to HVAC
loads?

 

Based on the models I've run it's obvious that roof conduction is being
accounted for on the HVAC side and it appears to be about the right
magnitude. However, added roof conduction loads to the plenum do not
translate to any added space loads or  building loads in the LS-x reports.
Does anyone have insight on how eQuest is handling them and why they do not
show up in space or building loads reports?

 

Thank you in advance.

 

Craig Simmons, LEED AP

The Green Engineer, LLP

 

 

From: Eckwahl, Tom [mailto:TEckwahl at karpinskieng.com] 
Sent: Thursday, July 23, 2009 9:29 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Roof Conduction - Where are you?

 

My baseline building energy usage is much lower than expected and in trying
to track down the cause I've found that the "Building Peak Load Components"
lists no roof heat gain or heat loss.  I did find that there is a gain/loss
located in the upper floor plenum and it's shown in the "Space Peak Load
Components".  

 

Is the plenum not considered part of the building?  I'm concerned that the
plenum walls and roof are not being included in the energy modeling run.

Thomas N. Eckwahl
Project Engineer, Mechanical

karpinski
ENGINEERING

 

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