On Tuesday, 28 January 2020, 22:20:35 CET, Linda Lawrie linda@xxxxxxxxxxxxxx [EnergyPlus_Support] <energyplus_support@xxxxxxxxxxxxxxx> wrote:
Pretty easy to see, Elements has given you NaN
results:
2018,5,28,8,0,,NaN,NaN,NaN,96240,0,0,313,90,3,89,0,0,0,0,0,8.6,0,0,0,0,0,0,0,0,0,0,0,0,0
and several following lines.
You might use the weather converter that is supplied with
EnergyPlus?
At 01:11 PM 1/28/2020, Stef Cy artcygne@xxxxxxxxx [EnergyPlus_Support]
wrote:
Hi,
I hope somebody can help me with this issue. I created a customized weather file using 'Elements' with data extracted from a website and that corresponds only to the year 2018. In my simulation, I get the error:
** Warning ** WetBulb not converged after 101 iterations(PsyTwbFnTdbWPb)
** ~~~ ** Routine=Unknown, Environment=RUN PERIOD 1, at Simulation time=05/28 07:10 - 07:20
** ~~~ ** Input Temperature = NAN
** ~~~ ** Input Humidity Ratio= NAN
** ~~~ ** Input Pressure = 96198.31
** ~~~ ** Resultant Temperature= NAN
Then:
** Severe ** Convergence error in SolveForWindowTemperatures for window MID TVIS73-BIG
Which I guess has to do with the above Warning error, because if I use another weather file, the simulation runs without a problem.
From what I understand there might be an issue with the correspondence of the WetBulb temperature with another parameters in the weather file, but I've use a converter to verify the values of Dew Point and Dry Bulb temperature, and the values that I obtain are quite similar to those in the weather file. In brief, the data in my weather file seems to be 'reasonable', so I don't know if there is something else that influences the problem in the simulation.
The city I'm simulating is very small, so I used DDY of another city, but again, if I try with a weather file from the E+ website, I have no problem with the simulation, so I guess my problem is the customize weather file. Attached corresponding weather files.
I'd appreciate your help regarding this issue.
Steph
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Posted by: Stef Cy <artcygne@xxxxxxxxx>
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