[Equest-users] new equest

[Clayton.E.Dumcum at jci.com]

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

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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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