[Trace-users] Cooling Only (Design) Schedules and LEED Energy Modeling

Christian Kaltreider ckaltreider at sudassociates.com
Mon Sep 16 08:32:12 PDT 2013



Reasonable schedules are extremely important for an energy model.  They are
one of the defining differences between an energy model and a design
simulation.  The Cooling Only schedule will make it so that whatever it is
applied to will be 100% on 100% of the time, except during the heating
design calculation.  So if it is applied to lighting, then all of your
lights will be on all of the time, day and night. 


So, it will be important for you to learn and understand how schedules are
done in TRACE.  To see the details of any schedule, go to the
library/template editors.  You can get to it under Actions-Edit
Library/Templates.  Once there, click on the clock.  The schedule type is
'Utilization'.  You can find the Cooling Only schedule there, along with
many others.  This is also where you can create your own schedules, which is
often necessary.


Chances are good that using the 'Cooling Only' schedule throughout your
model will raise a red flag for the reviewer, and will give very distorted


Good luck, and I hope this helps!




From: trace-users-bounces at lists.onebuilding.org
[mailto:trace-users-bounces at lists.onebuilding.org] On Behalf Of Ben
Sent: Monday, September 16, 2013 11:16 AM
To: trace-users at lists.onebuilding.org
Subject: [Trace-users] Cooling Only (Design) Schedules and LEED Energy


I am working on an energy model for a LEED project using Trace, it's my
first one, and I was going through the error comments Trace generates and I
saw a warning about using the Cooling Only (Design) schedule. Essentially
the warning was that ASHRAE requires schedules to be reflective of actual
occupant uses, and cooling only schedules wouldn't be realistic. 


I use this schedule all the time when using Trace for HVAC loads but I'm
nervous now using it from energy modeling. Will this get me a review comment
if a reviewer see's that I used this schedule, or is this schedule pretty
typically used in an energy model?




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