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

Jeremiah, 

Thanks for the suggestion I was thinking of reducing the radiant fraction but still don´t try it. 

It´s and sterilization equipment, the highest of its kind and actually it´s more than 4000 W/m2 but because of software limits only gets until 4000.

Pablo

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Jeremiah Crossett <jcrossett@...> wrote:
>
> Possibly you could set the fraction lost to a high number and the fraction
> radiant to a low number. This would cause the internal equipment to have a
> consumption load but would heat the zone less. Curios, what type of
> equipment is this high W/m2?
> 
> *
> *
> *
> *
> *Jeremiah D. Crossett  | Senior Analyst  |  Phase Change Energy Solutions*
> *
> 120 E. Pritchard St.  | Asheboro, NC 27203  | Mobile 503-688-8951
> www.phasechange.com
> *
> 
> *
> *
> *
> *
> 
> 
> 
> On Wed, Apr 24, 2013 at 7:56 AM, phidalgosandoval <
> phidalgosandoval@...> wrote:
> 
> > **
> >
> >
> > Jim,
> >
> > in this case should be interior, but Jean suggestion is appropiate anyway.
> >
> >
> > --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Jim Dirkes <jim@> wrote:
> > >
> > > How about defining this load as external equipment? (or if you are using
> > DB, update to the most recent Beta as Jean suggests)
> > >
> > > 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 10:51 AM
> > > To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> > > Subject: [EnergyPlus_Support] Re: Internal Gains - High Consumption
> > Equipment - Simulate
> > >
> > >
> > >
> > > Actually if I don´t condition that space probable people will be cook
> > and sterilized, instead of instruments.
> > >
> > > Thanks again.
> > >
> > > --- In EnergyPlus_Support@xxxxxxxxxxxxxxx<mailto:
> > EnergyPlus_Support%40yahoogroups.com>, Jim Dirkes <jim@<mailto:jim@>>
> > wrote:
> > > >
> > > > Why is there no conditioning with such high internal loads? You could
> > probably cook something in that room!
> > > >
> > > > 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%40yahoogroups.com> [mailto:
> > EnergyPlus_Support@xxxxxxxxxxxxxxx<mailto:
> > EnergyPlus_Support%40yahoogroups.com>] On Behalf Of phidalgosandoval
> >  > > Sent: Wednesday, April 24, 2013 10:46 AM
> >
> > > > To: EnergyPlus_Support@xxxxxxxxxxxxxxx<mailto:
> > EnergyPlus_Support%40yahoogroups.com>
> > > > Subject: [EnergyPlus_Support] Re: Internal Gains - High Consumption
> > Equipment - Simulate
> > > >
> > > >
> > > >
> > > > Thanks Jim I will try conditioning the space to see what happens.
> > > >
> > > > --- In EnergyPlus_Support@xxxxxxxxxxxxxxx<mailto:
> > EnergyPlus_Support%40yahoogroups.com><mailto:
> > EnergyPlus_Support%40yahoogroups.com>, Jim Dirkes <jim@<mailto:jim@>>
> > wrote:
> > > > >
> > > > > I think the problem is that you are not conditioning that zone and
> > the high internal heat is causing a surface temperature to become
> > incorrect. It does not make sense that the surface temperature is too low,
> > but perhaps if you condition the zone, the problem will be resolved?
> > > > >
> > > > > 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%40yahoogroups.com><mailto:
> > EnergyPlus_Support%40yahoogroups.com> [mailto:
> > EnergyPlus_Support@xxxxxxxxxxxxxxx<mailto:
> > EnergyPlus_Support%40yahoogroups.com><mailto:
> > EnergyPlus_Support%40yahoogroups.com>] On Behalf Of phidalgosandoval
> >  > > > Sent: Wednesday, April 24, 2013 10:33 AM
> > > > > To: EnergyPlus_Support@xxxxxxxxxxxxxxx<mailto:
> > EnergyPlus_Support%40yahoogroups.com><mailto:
> > EnergyPlus_Support%40yahoogroups.com>
> >
> > > > > Subject: [EnergyPlus_Support] Re: Internal Gains - High Consumption
> > Equipment - Simulate
> > > > >
> > > > >
> > > > >
> > > > > 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.
> > > > >
> > > > > ...Summary of Errors that led to program termination:
> > > > >
> > > > > ..... Reference severe error count=1
> > > > >
> > > > > ..... Last severe error=Temperature (low) out of bounds [-518.20]
> > for zone="8PAV:ESTERILIZACAORAPIDA", for
> > surface="8PAV:ESTERILIZACAORAPIDA_PARTITION_5_0_11363"
> > > > >
> > > > > ************* Warning: Node connection errors not checked - most
> > system input has not been read (see previous warning).
> > > > >
> > > > > ************* 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?
> > > > >
> > > > > Any detective hunch?
> > > > >
> > > > > thanks.
> > > > >
> > > > > PH
> > > > >
> > > > > --- In EnergyPlus_Support@xxxxxxxxxxxxxxx<mailto:
> > EnergyPlus_Support%40yahoogroups.com><mailto:
> > EnergyPlus_Support%40yahoogroups.com><mailto:
> > EnergyPlus_Support%40yahoogroups.com>, Jim Dirkes <jim@<mailto: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%40yahoogroups.com><mailto:
> > EnergyPlus_Support%40yahoogroups.com><mailto:
> > EnergyPlus_Support%40yahoogroups.com> [mailto:
> > EnergyPlus_Support@xxxxxxxxxxxxxxx<mailto:
> > EnergyPlus_Support%40yahoogroups.com><mailto:
> > EnergyPlus_Support%40yahoogroups.com><mailto:
> > EnergyPlus_Support%40yahoogroups.com>] On Behalf Of phidalgosandoval
> >
> > > > > > Sent: Wednesday, April 24, 2013 10:26 AM
> > > > > > To: EnergyPlus_Support@xxxxxxxxxxxxxxx<mailto:
> > EnergyPlus_Support%40yahoogroups.com><mailto:
> > EnergyPlus_Support%40yahoogroups.com><mailto:
> > EnergyPlus_Support%40yahoogroups.com>
> >
> > > > > > 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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