[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [EnergyPlus_Support] Re: Cooling set-point not fully achieved
Then try again to manually size the coil in the problem zone to twice
the size reported in the eio file. Also increase the air flow rate for
that fan coil unit and fan to twice the autosized value. If htis is
happening in more than 1 zone, then just pick 1 for now to test this out.
Then tell me what happens to the maximum zone temperature. Did the
maximum zone temperature go down? Also tell me if the water flow rate is
at a maximum when the zone temperature exceeds the set point. You can
report "System Node VolFlowRate" for the coil water inlet node and fan
coil air inlet node to easily match volumetric flow rate with your inputs..
This just sounds like a sizing issue and should be easily resolved.
anarui.oliveira wrote:
>
> Apparently, yes, but I set it to autosize (and I think I already did
> a trial with a larger, user-defined, water flow rate)...
>
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx
> <mailto:EnergyPlus_Support%40yahoogroups.com>, Richard Raustad
> <RRaustad@...> wrote:
> >
> > I have not looked at your input file, can you tell me if the water
> mass
> > flow rate through the fan coil is at a maximum when the cooling set
> > point is not met?
> >
> > anarui.oliveira wrote:
> > >
> > > Please forgive me for insisting, but I DO have some urgency on
> this
> > > one...
> > > Again, thanks for any help,
> > > Ana.
> > >
> > > --- In EnergyPlus_Support@xxxxxxxxxxxxxxx
> <mailto:EnergyPlus_Support%40yahoogroups.com>
> > > <mailto:EnergyPlus_Support%40yahoogroups.com>, "anarui.oliveira"
> > > <anarui.oliveira@> wrote:
> > > >
> > > > Hi again.
> > > >
> > > > I'm uploading a new file (Zone36598_cFancoil_exp), hoping that
> > > someone
> > > > can help me figure out why the cooling setpoints are not being
> > > achieved
> > > > for all times when the controls are active (namely in Zone
> 36598).
> > > The
> > > > model consists of Fancoil units created with Compact HVAC, and
> then
> > > > edited in the expanded file.
> > > > I tried several user-defined and sizing options, but couldn't
> solve
> > > the
> > > > temperature peaks above 25ºC.
> > > >
> > > > Thanks in advance,
> > > > Ana Rui.
> > > >
> > >
> > >
> >
> > --
> > Richard A. Raustad
> > Senior Research Engineer
> > Florida Solar Energy Center
> > University of Central Florida
> > 1679 Clearlake Road
> > Cocoa, FL 32922-5703
> > Phone: (321) 638-1454
> > Fax: (321) 638-1439 or 1010
> > Visit our web site at: http://www.fsec.ucf.edu <http://www.fsec.ucf.edu>
> >
> > UCF - From Promise to Prominence: Celebrating 40 Years
> >
>
>
--
Richard A. Raustad
Senior Research Engineer
Florida Solar Energy Center
University of Central Florida
1679 Clearlake Road
Cocoa, FL 32922-5703
Phone: (321) 638-1454
Fax: (321) 638-1439 or 1010
Visit our web site at: http://www.fsec.ucf.edu
UCF - From Promise to Prominence: Celebrating 40 Years
The primary EnergyPlus web site is found at:
http://www.energyplus.gov
The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/
Attachments are not allowed -- please post any files to the appropriate folder in the Files area of the Support Web Site.
EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/EnergyPlus_Support/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/EnergyPlus_Support/join
(Yahoo! ID required)
<*> To change settings via email:
mailto:EnergyPlus_Support-digest@xxxxxxxxxxxxxxx
mailto:EnergyPlus_Support-fullfeatured@xxxxxxxxxxxxxxx
<*> To unsubscribe from this group, send an email to:
EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/