[Equest-users] new equest

[Steve Mignogna]

Some of the changes that you guys are seeing could also be due to the new
DOE2 engine, especially if you had not updated it for a while.

On Wed, Jun 3, 2009 at 1:55 PM, Charles Land <cland at geo-marine.com> wrote:

>  I suppose what I was trying to ask was, would you trust this new version
> of e-quest??
>
>
>
> *From:* Steven Gates [mailto:stvgates at pacbell.net]
> *Sent:* Wednesday, June 03, 2009 12:52 PM
> *To:* Charles Land; Clayton.E.Dumcum at jci.com
> *Cc:* equest-users at lists.onebuilding.org
> *Subject:* RE: [Equest-users] new equest
>
>
>
> Your input had some relatively unique issues that we have resolved and will
> be posting a new release shortly.  Here is the summation of issues:
>
>
>
>    1. As identified below, the ZONE:HMIN-FLOW-RATIO was defaulting to the
>    SYSTEM level MIN-FLOW-RATIO rather than HMIN-FLOW-RATIO. In your input, you
>    specified SYSTEM:MIN-FLOW-RATIO = 0.8, but at each zone you specified
>    ZONE:MIN-FLOW-RATIO = 0.46.  The zone HMIN-FLOW-RATIO was then defaulting to
>    0.8 rather than “no default”, which would have then been set at the start of
>    the simulation to 0.46.
>
>    Interim solution: Don’t specify the MIN-FLOW-RATIO at both the SYSTEM
>    and ZONE level; either is fine, both are not.
>    2. When the SYSTEM:SUPPLY-FLOW is specifed, and one or more
>    ZONE:ASSIGNED-FLOWs are also specified, the outside air requirement for that
>    zone was dropped from the summation of zone outside air requirements.  This
>    causes the “OUTSIDE AIR RATIO” reported on SV-A to be less than it should
>    be, resulting in less heating energy.
>
>    Interim solution: Don’t specify SUPPLY-FLOW and ASSIGNED-FLOW
>    concurrently.  Or, don’t specify any zonal outside air requirements, and
>    instead specify the SYSTEM:MIN-OUTSIDE-AIR
>
>
>
> Steve Gates
>
>
>  ------------------------------
>
> *From:* equest-users-bounces at lists.onebuilding.org [mailto:
> equest-users-bounces at lists.onebuilding.org] *On Behalf Of *Charles Land
> *Sent:* Wednesday, June 03, 2009 8:20 AM
> *To:* Clayton.E.Dumcum at jci.com
> *Cc:* equest-users at lists.onebuilding.org;
> equest-users-bounces at lists.onebuilding.org
> *Subject:* Re: [Equest-users] new equest
>
>
>
> 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>
>
> cc
>
>
>
> Subject
>
> [Equest-users] new equest
>
>
>
>
>
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>
>
>
> 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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-- 
Steve Mignogna
Atelier Ten
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