[Trace-users] Trace-users Digest, Vol 71, Issue 3

[Keith Swartz]

Ahmed,

If you are running a reduced year simulation in TRACE, that might make a difference.

Keith Swartz, PE, BEMP, LEED AP
Senior Energy Engineer | Energy Center of Wisconsin | Madison.Chicago.Minneapolis
608.210.7123 | www.ecw.org

-----Original Message-----
From: Trace-users [mailto:trace-users-bounces at lists.onebuilding.org] On Behalf Of trace-users-request at lists.onebuilding.org
Sent: Tuesday, December 30, 2014 5:42 AM
To: trace-users at lists.onebuilding.org
Subject: Trace-users Digest, Vol 71, Issue 3

Send Trace-users mailing list submissions to
	trace-users at lists.onebuilding.org

To subscribe or unsubscribe via the World Wide Web, visit
	http://lists.onebuilding.org/listinfo.cgi/trace-users-onebuilding.org
or, via email, send a message with subject or body 'help' to
	trace-users-request at lists.onebuilding.org

You can reach the person managing the list at
	trace-users-owner at lists.onebuilding.org

When replying, please edit your Subject line so it is more specific than "Re: Contents of Trace-users digest..."


Today's Topics:

   1. Re: Question about how Trace calculates the Latent
      Ventilation Load?. (Daniel Kaler)


----------------------------------------------------------------------

Message: 1
Date: Mon, 29 Dec 2014 14:58:50 +0000
From: Daniel Kaler <DanielK at mepassociates.com>
To: Ahmed Kamel <ahmed_kamel99 at live.com>,
	"trace-users at lists.onebuilding.org"
	<trace-users at lists.onebuilding.org>
Subject: Re: [Trace-users] Question about how Trace calculates the
	Latent Ventilation Load?.
Message-ID:
	<CY1PR0801MB108214C8D7160867737DC709AA510 at CY1PR0801MB1082.namprd08.prod.outlook.com>
	
Content-Type: text/plain; charset="windows-1255"

Ahmed,

Can you include your room checksums report? That is the first place you should resort to when analyzing the load on a given space. It will break down your peak cooling loads on a sensible and latent basis.

My initial suggestions would be to see what you have entered for loads from occupants and the total number of occupants in the space. Additionally do you have the correct weather location referenced? If you?re brining in  roughly 1,200 CFM of OA, I would look at your design conditions for the location you have specified.

TRACE will give the results solely from the information you enter. You will need to dig into your user entered information. Without seeing the checksums or the file itself I cannot give you an answer to why your loads are coming out greater.

Dan Kaler EIT
Energy Engineer

MEP Associates, LLC   engineers | consultants | commissioning
o 651.379.9120 ext. 1307 | mepassociates.com<http://www.mepassociates.com/>

P Please consider the environment before printing this e-mail.

From: Trace-users [mailto:trace-users-bounces at lists.onebuilding.org] On Behalf Of Ahmed Kamel
Sent: Sunday, December 28, 2014 6:34 AM
To: trace-users at lists.onebuilding.org
Subject: [Trace-users] Question about how Trace calculates the Latent Ventilation Load?.

Hello,

I have an area of 5167 Sq-Ft which I'm giving 1176 fresh air CFM. I have this modeled on HAP, Elite and Trace.

HAP and Elite give me an estimated sensible load of around 35951 btu/hr and latent load of 53271 btu/hr both of which match my hand calculations perfectly. Trace, however, gives me a sensible load of around 34095 btu/hr which is okay but a latent load of 73018 btu/hr.

Why does Trace give me such a higher latent load? What am I missing?

Thanks in advance.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/trace-users-onebuilding.org/attachments/20141229/5c24ac55/attachment.html>

------------------------------

Subject: Digest Footer

_______________________________________________
Trace-users mailing list
Trace-users at lists.onebuilding.org
http://lists.onebuilding.org/listinfo.cgi/trace-users-onebuilding.org


------------------------------

End of Trace-users Digest, Vol 71, Issue 3
******************************************