Re: [EnergyPlus_Support] Temperature Out of Bounds During Warmup

Vaibhav

On 31 July 2012 13:54, Richard Raustad <RRaustad@xxxxxxxxxxxx> 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.
>
>
>
> ------------------------------------

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--
Richard A. Raustad
Senior Research Engineer
Florida Solar Energy Center
University of Central Florida
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Fax: (321) 638-1439 or 1010
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