[Equest-users] new equest

[Charles Land]

I sent this e-mail a few weeks ago in hopes to validate the accuracy of the new equest 3.63.  I have heard back about bugfixes you can place in your bdl code as well as a pending release.  The only problem is the bug fix is for when your heating and fan energy is increasing.  My gas usage is dropping when running my old file in the new equest.  Has anyone heard anything else about any of the problems (bugs) with 3.63.  I am honestly worried about switching over.  Has anyone else still been running into these problems?

From: Clayton.E.Dumcum at jci.com [mailto:Clayton.E.Dumcum at jci.com]
Sent: Thursday, May 21, 2009 12:26 PM
To: Charles Land
Cc: equest-users at lists.onebuilding.org; equest-users-bounces at lists.onebuilding.org
Subject: Re: [Equest-users] new equest


Jason,

There is a bug in V3.63 that defaults zone heating minimum flow ratio to 1.00 (technically, I think it defaults to the system minimum overall supply ratio), rather than the system heating minimum flow ratio (which defaults to 0.01).  This will cause systems with variable heating air flow to use a lot more fan and heating energy than expected.

You can either change all of your zone flows manually or set a user-defined default code snippet: for the zone heating minimum air flow (or insert this bit of code in your .inp file).

if (#P("HMIN-CFM-RATIO") == unused)
    then unused
    else if (#RV(#P("HMIN-CFM-RATIO")) == 0)
          then #P("HMIN-CFM-RATIO")
          else no_default
         endif
   endif


Hope this helps,
Clayton



Charles Land <cland at geo-marine.com>
Sent by: equest-users-bounces at lists.onebuilding.org

05/21/2009 11:08 AM

To

"equest-users at lists.onebuilding.org" <equest-users at lists.onebuilding.org>

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Subject

[Equest-users] new equest







Has anyone ran any of their old files in the new equest yet.  My numbers have significantly changed.  I am working on ECMs and my constant volume alternative is saving more money than my vav alternative.  Is anyone else having any problems with this.  Should I not be running 3.61 file on 3.63?

Charles (Jason) Land
Project Engineer
Geo-Marine, Inc | Energy Services Group
146 Market Place Boulevard | Knoxville, TN  37922
Office: (865) 692-0084 | Fax: (865) 692-0560
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