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High Temperature problem when coupling CONTAM and E+

asked 2021-04-26 03:38:15 -0500

Selma Inger gravatar image

updated 2021-04-27 12:13:17 -0500

Hello, I am a masters majoring Architecture Environment Design.

These days, I am researching integrated built-environment of Middle School including light, IAQ, thermal. so I am trying to couple Energyplus, CONTAM, Matlab.

the geometry of building, IAQ model are designed by CONTAM. Thermal properties and HVAC Loop are designed by Designbuilder and Energyplus. finally, I success co-simulation between E+ and CONTAM with some trials and errors. but, when I watched the result data, I found the overheat for non-occupancy periods.

I thought it may be caused by Warmup or Convergence problem during initialization. Hence, I increased min and max warmup days but it is still caused.

How can I solve the over heat problem of my model?

this is the message that I got from .err file

   ** Warning ** Temperature out of range [-100. to 200.] (PsyPsatFnTemp)
   **   ~~~   **  Routine=PsyTwbFnTdbWPb, Environment=RUNPERIOD 1, at Simulation time=12/09 14:10 - 14:15
   **   ~~~   **  Input Temperature=-156.30
   ************* Simulation Error Summary *************
   ** Warning ** The following Report Variables were requested but not generated -- check.rdd file
   **   ~~~   ** Either the IDF did not contain these elements, the variable name is misspelled,
   **   ~~~   ** or the requested variable is an advanced output which requires Output : Diagnostics, DisplayAdvancedReportVariables;
   ************* Key=2F:3X3 SINGLE DUCT CAV NO REHEAT, VarName=AIR SYSTEM OUTDOOR AIR FLOW FRACTION, Frequency=TimeStep
   ************* Key=2F:3X3 SINGLE DUCT CAV NO REHEAT, VarName=SYSTEM NODE MASS FLOW RATE, Frequency=TimeStep
   ** Warning ** The following schedule names are "Unused Schedules".  These schedules are in the idf
   **   ~~~   **  file but are never obtained by the simulation and therefore are NOT used.

thank you.

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answered 2021-04-26 03:56:39 -0500

Selma Inger gravatar image

Additionally, during non occupancy periods, all internal loads are off.

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Asked: 2021-04-26 03:38:15 -0500

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Last updated: Apr 26