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[EnergyPlus_Support] Re: Internal Gains - High Consumption Equipment - Simulate



Ivan,

Apparently is not the problem, because when simulating with with less W/m2 there is no problem.

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Ivan Mezzacapa <ivan_slip@...> wrote:
>
> Pablo,
> had this problem on a project, and the error was in geometry.
> 
> 
> Téc. Ivan Mezzacapa
> Desenhista Projetista  de Ar Condicionado / Consultor de Eficiência Energética em Ar Condicionado
> LinkedIN: http://www.linkedin.com/in/ivanmezzacapaCelular: (11)9963-9326
> 
> 
> 
> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> From: phidalgosandoval@...
> Date: Wed, 24 Apr 2013 14:33:16 +0000
> Subject: [EnergyPlus_Support] Re: Internal Gains - High Consumption Equipment - Simulate
> 
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>       Ok, Jim,
> 
> 
> 
> thanks for the extremely fast reply, more information is added here:
> 
> 
> 
> ** Severe  ** Temperature (low) out of bounds [-518.20] for zone="8PAV:ESTERILIZACAORAPIDA", for surface="8PAV:ESTERILIZACAORAPIDA_PARTITION_5_0_11363"
> 
> 
> 
> **   ~~~   **  During Warmup & Sizing, Environment=SUMMER DESIGN DAY IN SAO PAULO, at Simulation time=01/15 20:00 - 20:01
> 
> 
> 
> **   ~~~   ** Zone="8PAV:ESTERILIZACAORAPIDA", Diagnostic Details:
> 
>    **   ~~~   ** ...Internal Heat Gain [4006.000] W/m2
> 
>    **   ~~~   ** ...Infiltration/Ventilation [4.447E-003] m3/s
> 
>    **   ~~~   ** ...Mixing/Cross Mixing [0.000] m3/s
> 
>    **   ~~~   ** ...Zone is not part of HVAC controlled system.
> 
> 
> 
> **  Fatal  ** CalcHeatBalanceInsideSurf: Program terminates due to preceding conditions.
> 
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> ...Summary of Errors that led to program termination:
> 
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> ..... Reference severe error count=1
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> ..... Last severe error=Temperature (low) out of bounds [-518.20] for zone="8PAV:ESTERILIZACAORAPIDA", for surface="8PAV:ESTERILIZACAORAPIDA_PARTITION_5_0_11363"
> 
> 
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> ************* Warning:  Node connection errors not checked - most system input has not been read (see previous warning).
> 
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> ************* Fatal error -- final processing.  Program exited before simulations began.  See previous error messages.
> 
> 
> 
> ----------------------------------------------------------
> 
> Is the "6" of the 4006 W/m2 maybe the problem? should I indicate 3999 W/m2 for example?
> 
> 
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> Any detective hunch?
> 
> 
> 
> thanks.
> 
> 
> 
> PH
> 
> 
> 
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Jim Dirkes <jim@> wrote:
> 
> >
> 
> > Pablo,
> 
> > I don't think you have provided enough information.
> 
> > What error is caused at 4000 w/m2?
> 
> > There should be no problem caused by the value 2000 or 4000, so I think the problem is something else.
> 
> > 
> 
> > James V Dirkes II, PE, BEMP, LEED AP
> 
> > www.buildingperformanceteam.com<http://www.buildingperformanceteam.com/>
> 
> > Energy Analysis, Commissioning & Training Services
> 
> > 1631 Acacia Drive, Grand Rapids, MI 49504 USA
> 
> > 616 450 8653
> 
> > 
> 
> > From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of phidalgosandoval
> 
> > Sent: Wednesday, April 24, 2013 10:26 AM
> 
> > To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> 
> > Subject: [EnergyPlus_Support] Internal Gains - High Consumption Equipment - Simulate
> 
> > 
> 
> > 
> 
> > 
> 
> > Dear all
> 
> > 
> 
> > For a high consumption equipment we have 4000 w/m2 and Eplus does not simulate because of the high internal gains, but inputting 2000 w/m2 simulate with no problem (both cases with 20°C as cooling setpoint).
> 
> > 
> 
> > Does anyone knows how to simulate properly in this case?
> 
> > 
> 
> > Any comments are welcome,
> 
> > 
> 
> > Thanks in advance,
> 
> > 
> 
> > Pablo
> 
> >
>



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