[Bldg-sim] The calculated ground temperature exceeds -100 C

[Jianhua Huang]

Hi All:

 

I am trying to run the residential prototype downloaded from the EnergyPlus
website with the TMY3 weather data. But there was a fatal error that caused
termination of the simulation. The prototype file is
"SF_Arizona_Winslow.Muni.AP.723740_elecres_slab_IECC_2012.idf" (I converted
it from version 5 to version 7.2, so that I can run it with Energyplus 7.2),
and the weather file is "USA_AZ_Show.Low.Muni.AP.723747_TMY3.epw". 

I have attached both file in the email, in case anyone want to reproduce the
error message.  

 

Here is the error message:

 

Program Version,EnergyPlus-Windows-OMP-64 7.2.0.006, YMD=2015.02.03
14:07,IDD_Version 7.2.0.006

   ** Warning ** Output:PreprocessorMessage="GroundTempCalc - Slab" has the
following Warning condition:

   **   ~~~   ** Slab thickness [0.100 m] reset to 0.122 m  for
computational stability.

   ** Severe  ** Output:PreprocessorMessage="GroundTempCalc - Slab" has the
following Severe condition:

   **   ~~~   ** The calculated ground temperature exceeds -100 C [-389.47
C]

   ** Severe  ** Output:PreprocessorMessage="GroundTempCalc - Slab" has the
following Fatal condition:

   **   ~~~   ** Program terminates due to preceding condition.

   **  Fatal  ** Preprocessor condition(s) cause termination.

   ...Summary of Errors that led to program termination:

   ..... Reference severe error count=2

   ..... Last severe error=Output:PreprocessorMessage="GroundTempCalc -
Slab" has the following Fatal condition:

   ************* 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.

   ************* EnergyPlus Warmup Error Summary. During Warmup: 0 Warning;
0 Severe Errors.

   ************* EnergyPlus Sizing Error Summary. During Sizing: 0 Warning;
0 Severe Errors.

   ************* EnergyPlus Terminated--Fatal Error Detected. 1 Warning; 2
Severe Errors; Elapsed Time=00hr 00min  0.67sec

 

I think the major problem is that "The calculated ground temperature exceeds
-100 C [-389.47 C]". I don't know why this will happen. I didn't modify the
prototype and weather file, except the conversion of idf version. 

 

Thanks very much for any suggestion.

 

Sincerely,

 

Jianhua

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