Re: [EnergyPlus_Support] Compact HVAC:Zone:FAN COIL

["Emanuel Sá" <sa.emanuel@xxxxxxxxx>]

Thanks Mike, its working now!

I have one other question. This fan coil system is fed by a reversible
chiller that works as a chiller during the cooling season and as a heater
during the heating season. I couldn't find a plant equipment such as Heat
Pump Water to Air. Is there any possible way to simulate this kind of
system? I've read a previous post(2005) on this subject, and it was said
that at that time that couldn't be done. Is there a way to do that now?

Regards

Emanuel Sá


23 Mar 2007 10:21:46 -0700, Michael J. Witte <mjwitte@xxxxxxxx>:
>
>   There is no known issue with COMPACT HVAC:ZONE:FAN COIL. The example
> file
> CompactHVAC-5ZoneFanCoil.idf runs without error. Something about your
> model is
> significantly different from the example file. If you look at the expidf
> file,
> you will see the following fields in the cooling coil object:
>
> COIL:Water:DetailedFlatCooling,
>
> autosize, !- Fin Diameter {m}
> 0.0015, !- Fin Thickness {m}
> 0.01445, !- Tube Inside Diameter {m}
> 0.0159, !- Tube Outside Diameter {m}
>
> Apparently the default value for "Tube Inside Diameter" is larger than the
>
> autosized value "Fin Diameter". If you look at the eio output file, you
> will
> see what the autosized value was for "Fin Diameter". The only solution I
> can
> suggest at this point is to copy the expidf file to a new file name.idf,
> and
> then edit the values for Tube Inside Diameter and Tube Outside Diameter to
> be
> small enough to run without error.
>
> In the next release, we plan to make the simpler cooling coil model an
> option,
> which should eliminate this problem. Likewise, the detailed cooling coil
> should be able to ensure that the fin size is not autosized to be smaller
> than
> the tubes.
>
> Mike
>
> On 20 Mar 2007 at 16:22, dust_broom wrote:
>
> > Dear all
> >
> > I'm trying to simulate a simple water based fan coil system. To
> > simplify the input I'm using the Compact HVAC module. However, every
> > time I run the .idf file to obtain the .expidf file, I get this error
> > message:
> >
> > ** Severe ** InitWaterCoil: Detailed Flat Fin Coil, TubetoFinDiamRatio
> > > 1.0, [1.2544]
> >
> > Is there any known issue with the Compact HVAC:ZOne:Fancoil ?! In fact
> > this is not the first time I use this module, and I'm always getting
> > this same error message.
> >
> > Regards
> >
> > Emanuel Sá
> >
> >
> >
> >
> > 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.idf and press
> the
> > "search" button.
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
>
> ========================================================
> Michael J. Witte, GARD Analytics, Inc.
> EnergyPlus Testing and Support
> EnergyPlus-Support@xxxxxxxx <EnergyPlus-Support%40gard.com>
>
> 
>


[Non-text portions of this message have been removed]



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