[Trace-users] Part load conditions

[Richard Ellison]

We have submitted multiple projects using the automatically calculated fan energy.  They will ask you to printout the report that shows how Trace calculated the consumption of each fan but that has been satisfactory in the past.  The Trace help desk can tell you how to print out this report.

Rick

From: trace-users-bounces at lists.onebuilding.org [mailto:trace-users-bounces at lists.onebuilding.org] On Behalf Of Scott Parker
Sent: Thursday, January 24, 2013 9:15 AM
To: Caballero, Catalina; trace-users at lists.onebuilding.org
Subject: Re: [Trace-users] Part load conditions

Catalina,

I would guess that you are working on a LEED project.  From my experience the LEED reviewer will not accept the automatic fan calculation within Trace.  You need to manually calculate the maximum break HP for each fan for the baseline systems.  I recommend putting them in units of kW/CFM.  You will need to manually do the fan power calculations according to 90.1 and adjust for any "allowances" per 90.1.  Please don't use the Full Load Energy Rate numbers I have used.  You'll need to calculate these for your specific conditions per 90.1 requirements.
[cid:image004.png at 01CDFA17.0071EB30]
Scott

From: Caballero, Catalina [mailto:ccaballero at jalrw.com]
Sent: Thursday, January 24, 2013 9:03 AM
To: Scott Parker; trace-users at lists.onebuilding.org<mailto:trace-users at lists.onebuilding.org>
Subject: RE: Part load conditions

Can the software calculate it automatically with the following feature on?

[cid:image007.png at 01CDFA17.0071EB30]

Regards,

Catalina

From: Scott Parker [mailto:sparker at aeieng.com]
Sent: Thursday, January 24, 2013 9:01 AM
To: Caballero, Catalina; trace-users at lists.onebuilding.org<mailto:trace-users at lists.onebuilding.org>
Subject: RE: Part load conditions

Catalina,

You can define a custom fan curve based on the 90.1 cubic equation, but I would recommend that you use the 90.1 fan curve library member that comes with the program.  The curve is the same for 2004 and 2007 versions of 90.1.

[cid:image008.png at 01CDFA17.0071EB30][cid:image009.jpg at 01CDFA17.0071EB30]
Scott

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 Caballero, Catalina
Sent: Thursday, January 24, 2013 8:53 AM
To: trace-users at lists.onebuilding.org<mailto:trace-users at lists.onebuilding.org>
Subject: [Trace-users] Part load conditions

Hi all,

How do you show this method on Trace 700 for System 6?

[cid:image010.png at 01CDFA17.0071EB30]


Thanks,


Catalina Caballero, AIA. Assoc., LEED GA.
Johnson, Avedano, Lopez, Rodriguez & Walewski
Engineering Group, Inc.

2510 NW 97th Avenue, Suite 220, Miami, Florida 33172
Tel. (305) 594-0660 Ext. 217 Fax (305) 594-0907

Visit us online: www.jalrw.com<http://www.jalrw.com/>

[JALRW Logo]

HVAC - Electrical - Plumbing - Fire Protection
Sustainable Development - Commissioning


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