[Equest-users] Hours floating when fans on

[Steven Gates]

Make sure the minimum flow ratio matches what the boxes actually do, rather
than being allowed to default.  Also, if hydronic reheat, are you simulating
the piping losses?  In many cases the thermal losses of piping can be 1x-3x
larger than the actual reheat end-use load.

 

  _____  

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of
James.Souffrant at tac.com
Sent: Tuesday, July 28, 2009 12:01 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Hours floating when fans on

 

Would anyone have any suggestions for how to decrease the amount of time a
system spends floating?  I am modeling a VAV reheat system, with 24 hr
heating availability, space heating set point 74 occupied /unoccupied,
throttling range of 1 degree.  I am unable to simulate enough heating during
the summer to reflect actual usage and I believe most of it is being lost
during these time periods.  I have attached a pdf of the specific system SIM
file.  Specific months of reference are May-Nov.

 

Thanks

 

James Souffrant, EIT
Engineer I, Project Development and Engineering

 

TAC

Energy Solutions


4431 North Front Street

Harrisburg, PA 17109  USA
Direct:  +1 (717) 232-8182 x264
Fax:      +1 (717) 232-8187
Mobile:  +1 (717) 982-3691
Email:    James.Souffrant at tac.com
Web:     www.tac.com

P  Please consider the environment before printing this e-mail.

TAC is becoming Schneider Electric on October 1, 2009.
Notice: This email message, together with any attachments, contains
information of TAC, which may be confidential, proprietary, copyrighted
and/or legally privileged. This email is intended solely for the use of the
individual or entity named on the message. If you are not the intended
recipient, and have received this message in error, please immediately
return by email and then delete it.

 

 

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20090728/79948f2f/attachment-0001.htm>