EnergyPlus-PythonPlugin: zone surface temperature out of bounds

asked 2021-02-23 07:50:25 -0600

ep_user gravatar image

updated 2021-02-23 09:12:41 -0600

I am using Python plugin to overwrite some variables from EnergyPlus (v9.4), such as: zoneSAT, zoneSAF, AHU-SAT, AHU-SAF, OAT. I tried to send back the original values, instead of modified variable values. I also tried to give back the modified variable values.

But both simulations crashed with errors: zone surface temperature out of bounds.

The eplusout.err file also shows warnings related with: PsyWFnTdpPb, PsyPsatFnTemp.

What are the possible solutions?

The errors:

** Severe  ** Temperature (high) out of bounds [500.38] for zone="ROOM B2", for surface="WS_1F_WALL" 
**   ~~~   **  Environment=RUN PERIOD 2, at Simulation time=04/24 16:37 - 16:38
**  Fatal  ** Program terminates due to preceding condition.
...Summary of Errors that led to program termination:
..... Reference severe error count=68353084
..... Last severe error=Temperature (high) out of bounds [500.38] for zone="ROOM B2", for surface="WS_1F_WALL"

Other warnings:

*************  ** Warning ** Entered Humidity Ratio invalid (PsyWFnTdpPb)
*************  **   ~~~   **   This error occurred 1372823 total times;
*************  **   ~~~   **   during Warmup 0 times;
*************  **   ~~~   **   during Sizing 0 times.
*************  **   ~~~   **   Max=48288876.468566 []  Min=16.917983 []
*************
*************  ** Warning ** Temperature out of range [-100. to 200.] (PsyPsatFnTemp)
*************  **   ~~~   **   This error occurred 73070170 total times;
*************  **   ~~~   **   during Warmup 0 times;
*************  **   ~~~   **   during Sizing 0 times.
*************  **   ~~~   **   Max=479.781769 C  Min=-39027.041016 C 
*************  ** Warning ** CalcDoe2DXCoil: Coil:Cooling:DX:TwoStageWithHumidityControlMode="ROOFTOP COOLING COIL" - Air volume flow rate per watt of rated total cooling capacity is out of range error continues...
*************  **   ~~~   **   This error occurred 883147104 total times;
*************  **   ~~~   **   during Warmup 0 times;
*************  **   ~~~   **   during Sizing 0 times.
*************  **   ~~~   **   Max=9.233481E-006  Min=2.711692E-008
*************  ** Warning ** CalcDoe2DXCoil: Coil:Cooling:DX:TwoStageWithHumidityControlMode="ROOFTOP COOLING 
COIL" - Full load outlet temperature indicates a possibility of frost/freeze error continues. Outlet air temperature 
statistics follow:
*************  **   ~~~   **   This error occurred 161418 total times;
*************  **   ~~~   **   during Warmup 0 times;
*************  **   ~~~   **   during Sizing 0 times.
*************  **   ~~~   **   Max=-6.936612  Min=-21439.224791
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