Non Existant Mixed Air Temp

asked 2017-06-13 11:18:00 -0600

edgarr

260 ●7 http://Intrinzec.com/

updated 2017-06-16 03:23:55 -0600

Julien Marrec

29726 ●94 ●76 http://www.effibem.com/

I Have check all my air loops and cannot find the node 71 or any node that has a Mixed Air Temp 2. Is there a way you can single it out or maybe purge the air loops. I have tried purging the thermal zone tab but it did not work.

Program Version,EnergyPlus, Version 8.7.0-78a111df4a, YMD=2017.06.13 09:09,IDD_Version 8.7.0
************* IDF Context for following error/warning message:
************* Note -- lines truncated at 300 characters, if necessary...
*************  26048 SetpointManager:MixedAir,
************* indicated Name=Mixed Air Temp 2
************* Only last 3 lines before error line shown.....
*************  26049   Mixed Air Temp 2,                       !- Name
*************  26050   Temperature,                            !- Control Variable
*************  26051   ,                                       !- Reference Setpoint Node Name
** Severe  ** IP: IDF line~26051 Error detected in Object=SETPOINTMANAGER:MIXEDAIR, name=MIXED AIR TEMP 2
**   ~~~   ** Field [Reference Setpoint Node Name] is required but was blank
************* IDF Context for following error/warning message:
************* Note -- lines truncated at 300 characters, if necessary...
*************  26048 SetpointManager:MixedAir,
************* indicated Name=Mixed Air Temp 2
************* Only last 5 lines before error line shown.....
*************  26049   Mixed Air Temp 2,                       !- Name
*************  26050   Temperature,                            !- Control Variable
*************  26051   ,                                       !- Reference Setpoint Node Name
*************  26052   Node 71,                                !- Fan Inlet Node Name
*************  26053   ,                                       !- Fan Outlet Node Name
** Severe  ** IP: IDF line~26053 Error detected in Object=SETPOINTMANAGER:MIXEDAIR, name=MIXED AIR TEMP 2
**   ~~~   ** Field [Fan Outlet Node Name] is required but was blank
** Severe  ** IP: Blank "required" fields found in input
** Severe  ** IP: Out of "range" values and/or blank required fields found in input
**  Fatal  ** IP: Errors occurred on processing IDF file. Preceding condition(s) cause termination.
...Summary of Errors that led to program termination:
..... Reference severe error count=4
..... Last severe error=IP: Out of "range" values and/or blank required fields found in input
************* 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. 0 Warning; 4 Severe Errors; Elapsed Time=00hr 00min  0.47sec

answered 2017-06-16 03:31:04 -0600

Julien Marrec

29726 ●94 ●76 http://www.effibem.com/

updated 2017-06-16 03:35:26 -0600

The problem is your SetpointManager:MixedAir called Mixed Air Temp 2 which is illegal, it's missing the Reference Setpoint Node Name and the Fan Outlet Node Name to be valid.

Whether you meant to use this object in the first place or not is only known to you, and since we don't have the required info from your input file to tell for sure how it should be structured, I can only give you some guidance/placeholders as to how it should be used:

SetpointManager:MixedAir, 
  Mixed Air Temp 2,   !- Name
  Temperature,   !- Control Variable
  << Name of your Air Loop Outlet Node >>,                   !- Reference Setpoint Node Name
  Node 71,   !- Fan Inlet Node Name
  << Name of your Fan Outlet Node >>,                   !- Fan Outlet Node Name
  << Name of your Mixed Air Node >>;                             !- Setpoint Node or NodeList Name

Here the link to the documentation for SetpointManager:MixedAir

EDIT: reading your question again, it seems that even though you tagged this question with energyplus, I think you're using OpenStudio.

If you cannot find a MixedAir setpoint anywhere in your model, maybe it got orphaned. It would be useful if you could share your OpenStudio *.osm file so we can take a deeper look.

You could also try to the open your .osm in a text editor, and search for Mixed Air Temp 2 to see if this present in the OpenStudio file already (orphaned), or whether it's created when the model is ForwardTranslated to the E+ IDF file. (Or use the ruby bindings, spm = model.getSetpointManagerMixedAirByName("Mixed Air Temp 2").get,e tc.)

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I just ended up remaking the entire model. It was my first model so the remade one is much cleaner. I did not know you could open the .osm file with a txt editor.