[Equest-users] Review Requested

Paul Diglio paul.diglio at sbcglobal.net
Thu Sep 9 13:38:59 PDT 2010


Vikram & Eddie:

Thank you, I changed the OA From to undefined and that corrected my cooling 
energy during the cold months, but as Eddie mentioned, I have a lot of heating 
going on during the summer months.  Any idea why?

Sincerely,

Paul Diglio




________________________________
From: "Sami, Vikram" <Vikram.Sami at perkinswill.com>
To: Eddie Corwin <ecorwin at altanova-energy.com>; 
"equest-users at lists.onebuilding.org" <equest-users at lists.onebuilding.org>
Sent: Thu, September 9, 2010 2:54:52 PM
Subject: Re: [Equest-users] Review Requested

 
Just to add to what Eddie said – you will spec OA from only when you are 
borrowing outside air from another system (Like with a DOAS). I’ve actually 
never  seen this before (where you specify OA-From as the same system). What its 
probably doing is taking your return air as OA (at around 78) and cooling it 
(and taking moisture out of it). 

 
I would have thought it would give you an error. 
 
Vikram Sami, LEED AP
Sustainable Design Analyst
1382 Peachtree St. NE, Atlanta, GA 30309
t: 404-443-7462    f: 404.892.5823       e: vikram.sami at perkinswill.com   
www.perkinswill.com
Perkins+Will.  Ideas + buildings that honor the broader goals of society
 
 
From:equest-users-bounces at lists.onebuilding.org 
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Eddie Corwin
Sent: Thursday, September 09, 2010 3:26 PM
To: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Review Requested
 
In both of your HVAC systems you have "Outdoor Air From System" object 
specified.  In most cases, you will want to leave this object blank. The only 
time would want to use  that object if, for example, you were taking the return 
air from one system, and using it in another, separate, system.  I am pretty 
sure that in your case, especially in the labs, all of the air will be coming 
from the outside, or will be recirculated within  the same system.  
 
If you reset those values to their default you get much better cooling results, 
but you also get heating in the summer, which is another issue you need to look 
at in more detail.   The "Outdoor Air From System" object is found in your HVAC 
system --> Outdoor Air --> Outdoor Air and Economizer
 
-Eddie
 

________________________________
 
From:"equest-users-request at lists.onebuilding.org" 
<equest-users-request at lists.onebuilding.org>
To: equest-users at lists.onebuilding.org
Sent: Thu, September 9, 2010 3:03:35 PM
Subject: Equest-users Digest, Vol 30, Issue 13

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  1. LEED compliance new version of eQuest (Peter Hillermann)
  2. LEED compliance new version of eQuest (Peter Hillermann)
  3. Re: Review Requested (Umesh Atre)
  4. Re: Infrared Heaters (Peter Hillermann)
  5. Re: Review Requested (Paul Diglio)
  6. Re: Reduction of window area in detail mode! (Arunabha Sau)
  7. Re: Infrared Heaters (Peter Hillermann)
  8. Re: Infrared Heaters (Nick Caton)
  9. Re: Infrared Heaters (Peter Hillermann)
  10. Re: Review Requested (Umesh Atre)
  11. Re: Floor Slab F-factor (Jeremy Poling)
  12. Re: Infrared Heaters (Charles Land)
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