<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<META NAME="Generator" CONTENT="MS Exchange Server version 6.5.7638.1">
<TITLE>RE: [Equest-users] Minimum Fresh Air AHU</TITLE>
</HEAD>
<BODY>
<!-- Converted from text/plain format -->
<P><FONT SIZE=2>Hi Guys,<BR>
<BR>
May I ask why are you doing this process?<BR>
<BR>
My understanding is that I double click on each zone, go to the Air flow/Outside Air, and enter the CFM of the fresh outside air. In what cases do I need to create an AHU for fresh air?<BR>
<BR>
Thanks!<BR>
Omar<BR>
<BR>
___________________________<BR>
<BR>
Omar Katanani<BR>
Sustainable Design Engineer<BR>
Email: omar@ecoconsulting.net<BR>
<BR>
<BR>
EcoConsulting (Lebanon)<BR>
Nahas Building, 4th floor<BR>
4 St-Maron Street / Georges Haddad Avenue<BR>
Postal Code: 2028 5806 SAIFI<BR>
Beirut, Lebanon<BR>
Tel: +961 (0) 1 971 266<BR>
Mobile: +961 (0) 3 045 045<BR>
<BR>
<BR>
EcoConsulting (UK) Ltd<BR>
28 Marshalsea Road<BR>
London, SE1 1HF<BR>
Tel: +44 (0)207 939 0989<BR>
Fax: +44 (0)207 939 0981<BR>
Website: www.ecoconsulting.net<BR>
<BR>
<BR>
<BR>
-----Original Message-----<BR>
From: equest-users-bounces@lists.onebuilding.org on behalf of Carol Gardner<BR>
Sent: Wed 11/3/2010 6:41 PM<BR>
To: Andy Harrison<BR>
Cc: equest-users@lists.onebuilding.org<BR>
Subject: Re: [Equest-users] Minimum Fresh Air AHU<BR>
<BR>
Andrew,<BR>
<BR>
Create a Dummy space, very small 1ft x 1ft x 1ft with no load and then a<BR>
Dummy Zone for it and use this for your zone. I would not use Multi Zone but<BR>
rather PSZ if you are supply the fresh air at a constant volume or PVAVS if<BR>
it is supplied at a variable volume.<BR>
<BR>
Best,<BR>
<BR>
Carol<BR>
<BR>
On Wed, Nov 3, 2010 at 2:48 AM, Andy Harrison <Andy.Harrison@arup.com>wrote:<BR>
<BR>
> Hi All,<BR>
><BR>
> I am trying to model a building which has a minimum fresh air AHU serving<BR>
> all zones, each of which also has a local cooling unit. I was trying to<BR>
> model this using a single zone AHU for each zone, with outside air to all<BR>
> units coming from the multizone unit, which I created later, however I am<BR>
> getting an error saying that the multizone AHU needs to be assigned at least<BR>
> one zone. How can I do this, when all of the zones are assigned to a local<BR>
> unit? If I assign a small zone to get rid of the error, will the multizone<BR>
> AHU only be sized for the cooling load associated with this zone? How can I<BR>
> confirm that the multizone AHU is sized for the appropriate fresh air load?<BR>
><BR>
> Regards,<BR>
><BR>
> Andrew<BR>
> ____________________________________________________________<BR>
> Electronic mail messages entering and leaving Arup business<BR>
> systems are scanned for acceptability of content and viruses<BR>
><BR>
> _______________________________________________<BR>
> Equest-users mailing list<BR>
> <A HREF="http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org</A><BR>
> To unsubscribe from this mailing list send a blank message to<BR>
> EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG<BR>
><BR>
<BR>
<BR>
<BR>
--<BR>
Carol Gardner PE<BR>
<BR>
</FONT>
</P>
</BODY>
</HTML>