Re: [EnergyPlus_Support] Re: Temperature Out of Bounds During Warmup

Vaibhav Jain

www.vaibhavjain.co

On 20 August 2012 23:00, YuanLu Li <yli006@xxxxxxxxxxx> wrote:

The epw files, I think, are the same, the .ddy fles for the DesignDays are different. if you down load the weather files zip files now.. The EPlaunch remembers the EPW file location in the history file. I think, I am still using the old .epw without any problem.

You do have version 7.1 DesignDay object format in your IDF.

Your file had no problem on the DesignDay sizing run. The -999 output is because the value in the register is not valid.

AHA, AHB and AHG had problem, because you have added the setpoint manager for the reheat, and it
is not complete. If you re-run the template version or remove the reheat set point managers, the reheat coil will be controlled by the zone thermostat and be available for Winter heating.

For Ah3, if yu remove the DOAS and allow the OD air to flow in the OA mixer, it is the basic Zone fan coil system. Direct and simple. You can connect diffusers and fixed dampers to the system without any change in the simulation model. It is still possible to vary the OS air flow rate to match the people in the zone using a schedule.

Dr. Li

To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: matthew.sverre.anderson@xxxxxxxxx
Date: Mon, 20 Aug 2012 14:42:12 +0000
Subject: [EnergyPlus_Support] Re: Temperature Out of Bounds During Warmup

Haha, yes I was able to solve this particular error. I can't remember exactly what I did though but it was something really simple. I might have been using the E+ 7.0 weather file instead of the 7.1 weather file.

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Vaibhav Jain <vaibhav.energyarchitect@...> wrote:
>
> Hello Matthew,
>
> Were you able to resolve the error? I too get the same, and I am now
> following Richard's instruction.
>
> Vaibhav
>
>
>
>
>
> On 31 July 2012 13:54, Richard Raustad <RRaustad@...> wrote:
>
> > **
> >
> >
> > It could be solar. Turn on reporting during warmup and add report
> > variables.
> >
> > This technique is used to diagnose all problems with a simulation.
> >
> > Use:
> > Output:Diagnostics,ReportDuringWarnup;
> > Output:VariableDictionary,IDF;
> >
> > Then run the simulation again. Look in the rdd file for report variables
> > that could help identify what is causing this.
> > Outdoor temp
> > Output:Variable,*,Outdoor Dry Bulb,hourly; !- Zone Average [C]
> >
> > Zone temp
> > Output:Variable,*,Zone Mean Air Temperature,hourly; !- Zone Average [C]
> > Output:Variable,*,Zone/Sys Air Temperature,hourly; !- HVAC Average [C]
> > Output:Variable,*,Zone/Sys Air Temperature at Thermostat,hourly; !- HV
> >
> > The zone load
> > Output:Variable,*,Zone/Sys Sensible Load Predicted,hourly; !- HVAC
> > Average [W]
> > Output:Variable,*,Zone/Sys Sensible Load to Heating Setpoint
> > Predicted,hourly; !- HVAC Average [W]
> > Output:Variable,*,Zone/Sys Sensible Load to Cooling Setpoint
> > Predicted,hourly;
> >
> > Solar through windows
> > Output:Variable,*,Beam Solar Transmitted through Interior Window,hourly;
> > !- Zone Average [W]
> >
> > There are many others....
> >
> > Then run the simulation again and look at the simulation output (*.csv)
> >
> >
> > On 7/30/2012 6:18 PM, ntraughpee wrote:
> > > I am having this error during the warmup of a new model I am trying to
> > create:
> > >
> > > ** Severe ** Temperature (high) out of bounds (245.03] for
> > zone="FIRSTNORTH", for surface="961E1D"
> > > ** ~~~ ** During Warmup, Environment=RUNPERIOD, at Simulation time=01/01
> > 03:00 - 03:03
> > > ** ~~~ ** Zone="FIRSTNORTH", Diagnostic Details:
> > > ** ~~~ ** ...Internal Heat Gain [0.000] W/m2
> > > ** ~~~ ** ...Infiltration/Ventilation [0.000] m3/s
> > > ** ~~~ ** ...Mixing/Cross Mixing [0.000] m3/s
> > > ** ~~~ ** ...Zone is 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 (high) out of bounds (245.03] for
> > zone="FIRSTNORTH", for surface="961E1D"
> > >
> > > Any idea what is causing this? I have never encountered it before and I
> > am flumoxed.
> > >
> > >
> > >
> > > ------------------------------------
> >
> > >
> > > Primary EnergyPlus support is found at:
> > > http://energyplus.helpserve.com or send a message to
> > energyplus-support@...
> > >
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> > >
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> > >
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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
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> >
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