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Re: [EnergyPlus_Support] Exhaust fan (using HVAC Compact Object) - Problems and doubts
Sorry, the expanded file will be YourNameofFile.expidf
Richard Raustad wrote:
>
> Edit the "expanded" idf. This is the file that is created when using
> compact HVAC objects. The program reviews the compact HVAC objects and
> creates an idf file to be used by E+. Use this file to enter your
> exhaust fans. The expanded file is named expanded.idf. Modify this file
> and change the name to save it.
>
> André Lopes wrote:
> >
> > Thank you for your answer.
> > Regarding the Zone Exhaust fan, I think that your idea doesn´t work.
> > I am working only with HVAC COMPACT objects. So, I can not use the
> > Controlled Zone Equipment Configuration, because it needs nodes.
> > Do you have other ideas to put exhaust fans? I am only using compact
> > objects. Are there any example files?
> > Regards
> > A L
> >
> > ----- Original Message ----
> > From: Richard Raustad <RRaustad@xxxxxxxxxxxx
> <mailto:RRaustad%40FSEC.UCF.EDU>
> > <mailto:RRaustad%40FSEC.UCF.EDU>>
> > To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> <mailto:EnergyPlus_Support%40yahoogroups.com>
> > <mailto:EnergyPlus_Support%40yahoogroups.com>
> > Sent: Friday, May 2, 2008 5:53:13 PM
> > Subject: Re: [EnergyPlus_Support] Convergence Error - Warning -
> > Exhaust fan (using HVAC Compact Object)
> >
> > !) Loads Initialization did not converge error is only telling you that
> > after 25 iterations, the maximum temperature comparison was only 0.036 C
> > with a tolerance of 0.02 C. This will not hurt your simulation, it just
> > means that during warmup, the simulation was unable to find a repeatable
> > starting temperature. You may be able to increase the number of warmup
> > days to get rid of this error.
> >
> > 2) The generic HX should not be used when air flow ratios are below 50%
> > of the nominal flow rate. The warning says the ratio is 0.05. This is to
> > low for accurate results. If this is an error, fix the cause and run the
> > simulation again. You could also change to a flat plate HX if the flow
> > ratio is actually required.
> >
> > 3) You must add exhaust fans to your simulation. Just enter the Zone
> > Exhaust Fan object, give it a schedule, and enter the exhaust fan inlet
> > node name in a Controlled Zone Equip Configuration object. The exhaust
> > fan inlet node name in the fan object is an exhaust node name in the
> > controlled zone equip configuration object..
> >
> > 4) Any valid report variable can be added to a custom meter. See the
> > documentation for help and examples.
> >
> > André Lopes wrote:
> > >
> > > Dear E Plus Team
> > > In my error report the following messages appeared:
> > > What is the meaning? Is this important for the simulation results?
> > > ** Severe ** Loads Initialization did not Converge
> > > (CheckWarmupConverg ence) after 25 warmup days.
> > > ** ~~~ ** ..Environment= COIMBRA - PRT IWEC DATA WMO#=085490
> > > ** ~~~ ** ..Max Temp Comparison=3. 63E-002 vs Temperature
> > > Convergence Tolerance=2. 00E-002 - Fail Convergence
> > > ** ~~~ ** ..Min Temp Comparison=5. 00E-003 vs Temperature
> > > Convergence Tolerance=2. 00E-002 - Pass Convergence
> > > ** ~~~ ** ..Max Heat Load Comparison=1. 6990E-004 vs Loads
> > > Convergence Tolerance=2. 00E-002 - Pass Convergence
> > > What is the meaning?
> > > ** Warning ** HEAT EXCHANGER:AIR TO AIR:GENERIC "AHU_2 HEAT RECOVERY"
> > > ** ~~~ ** Average air volume flow rate is <50% or >130% of the
> > > nominal HX supply air volume flow rate.
> > > ** ~~~ ** Air volume flow rate ratio = 4.958E-002. Occurrence
> > > info=COIMBRA - PRT IWEC DATA WMO#=085490, 01/17 08:00 - 09:00
> > > How can simulate exhaust fans (Kitchen, WC) using the HVAC Compact
> > > System? (I am using version 2.1)
> > > How should I select a certain variable and after that insert a
> > > meter to visualize it?
> > > How should I customize a meter report ?
> > > My Best Regards
> > > A L
> > >
> > > ____________ _________ _________ _________ _________ _________ _
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> > >
> > >
> >
> > --
> > 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
> >
> > __________________________________________________________
> > Be a better friend, newshound, and
> > know-it-all with Yahoo! Mobile. Try it now.
> > http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ
> <http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ>
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> >
> > [Non-text portions of this message have been removed]
> >
> >
>
> --
> 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
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