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

Dahlstrom, Aaron ADahlstrom at in-posse.com
Mon Sep 16 09:09:51 PDT 2013

One more point - there are good "example" schedules at the end of the ASHRAE 90.1-2007 User's Manual.
We often use these as starting points, especially for speculative buildings.


Aaron Dahlstrom, PE, LEED(r) AP
In Posse - A subsidiary of AKF| 1500 Walnut Street, Suite 1414, Philadelphia, PA 19102
d: 215-282-6753| m: 267-507-5470| In Posse: 215-282-6800| AKF: 212-354-5656
e: ADahlstrom at in-posse.com | in posse web: www.in-posse.com<http://www.in-posse.com/> | akf web: www.AKFGroup.com

From: trace-users-bounces at lists.onebuilding.org [mailto:trace-users-bounces at lists.onebuilding.org] On Behalf Of Christian Kaltreider
Sent: Monday, September 16, 2013 11:32 AM
To: 'Ben'; trace-users at lists.onebuilding.org
Subject: Re: [Trace-users] Cooling Only (Design) Schedules and LEED Energy Modeling


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 results.

Good luck, and I hope this helps!


From: trace-users-bounces at lists.onebuilding.org<mailto: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<mailto:trace-users at lists.onebuilding.org>
Subject: [Trace-users] Cooling Only (Design) Schedules and LEED Energy Modeling

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?


[cid:image003.png at 01CDAB78.6524ACE0]
Ben Hollon, EIT, LEED(r) AP BD+C, MBA
email:  bhollon at antella-inc.com<mailto:xxxxxx at antella-inc.com>
Cell (816) 536-3434 * Tele:  (816) 421-0950 ext. 104

Antella Consulting Engineers, inc.

1600 Genessee, Suite 667 * Kansas City, MO 64102 * Tele: (816) 421-0950 * Fax: (816) 249-2439 * www.antella-inc.com<http://www.antella-inc.com>

DISCLAIMER: The information contained in this electronic communication, as well as in any attachments, is privileged and confidential and intended solely for use by the addressee(s). Any other use, dissemination, or copying of this electronic communication is strictly prohibited and is an interference with Antella Consulting Engineers, inc. confidential business relationships. If you received this communication in error, please notify me immediately and permanently delete the original and any electronic or printed copies of this electronic communication.


This e-mail may contain information that is confidential, privileged or otherwise protected from disclosure. If you are not an intended recipient of this e-mail, do not duplicate or redistribute it by any means. Please delete it and any attachments and notify the sender that you have received it in error. Unintended recipients are prohibited from taking action on the basis of information in this e-mail. E-mail messages may contain computer viruses or other defects, may not be accurately replicated on other systems, or may be intercepted, deleted or interfered without the knowledge of the sender or the intended recipient. If you are not comfortable with the risks associated with e-mail messages, you may decide not to use e-mail to communicate with In Posse.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/trace-users-onebuilding.org/attachments/20130916/29af4e1b/attachment-0002.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.png
Type: image/png
Size: 17316 bytes
Desc: image001.png
URL: <http://lists.onebuilding.org/pipermail/trace-users-onebuilding.org/attachments/20130916/29af4e1b/attachment-0002.png>

More information about the Trace-users mailing list