troubles with space infiltration effective leakage area object

asked 2016-10-26 12:17:48 -0500

pep4life
143 ●6

updated 2016-10-26 13:10:19 -0500

Is it possible to delete a space infiltration effective leakage area object (SIELAO) in OpenStudio 1.12.0? I'm using the 90.1-2010 mid-rise apartment template and have built a model with 56 suites and 8 corridors, each assigned a thermal zone. I have connected my thermal zones to VAV with reheat for the corridors and a simple HVAC air loop (added OA system, var fan, and diffusers to an empty air loop) for the apartment suites which are heated via in-floor radiant heating (after reading this great post: https://unmethours.com/question/9177/...). I initially assigned a SIELAO to each of my two space types, but was getting errors like this:

Program Version,EnergyPlus, Version 8.5.0-c87e61b44b, YMD=2016.10.26 09:04,IDD_Version 8.5.0 *** IDF Context for following error/warning message: *** Note -- lines truncated at 300 characters, if necessary... *** 31135 ZoneInfiltration:EffectiveLeakageArea, *** indicated Name=Space Infiltration Effective Leakage Area 1 *** Only last 2 lines before error line shown..... *** 31136 Space Infiltration Effective Leakage Area 1, !- Name *** 31137 , !- Zone Name * Severe * IP: IDF line~31137 Error detected in Object=ZONEINFILTRATION:EFFECTIVELEAKAGEAREA, name=SPACE INFILTRATION EFFECTIVE LEAKAGE AREA 1 * ~~~ * Field [Zone Name] is required but was blank *** IDF Context for following error/warning message: *** Note -- lines truncated at 300 characters, if necessary... *** 31180 ZoneInfiltration:EffectiveLeakageArea, *** indicated Name=Space Infiltration Effective Leakage Area 2 *** Only last 2 lines before error line shown..... *** 31181 Space Infiltration Effective Leakage Area 2, !- Name *** 31182 , !- Zone Name * Severe * IP: IDF line~31182 Error detected in Object=ZONEINFILTRATION:EFFECTIVELEAKAGEAREA, name=SPACE INFILTRATION EFFECTIVE LEAKAGE AREA 2 * ~~~ * Field [Zone Name] is required but was blank * Warning * IP: Note -- Some missing fields have been filled with defaults. See the audit output file for details. * 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. 1 Warning; 4 Severe Errors; Elapsed Time=00hr 00min 0.97sec

I then read a post that said it was better to assign them to the spaces directly. So I assigned them to each of my 64 spaces in the spaces properties tab under Air Flow; so then I had 64 SIELAOs for my spaces and still 2 in my space types - a total of 66 SIELAOs. I then tried deleting the SIELAOs from my space types tab simply by deleting the object names from my space types tab (haven't ... (more)

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answered 2016-10-26 12:43:35 -0500

David Goldwasser

20295 ●94 ●14 http://www.openstudio.net/

updated 2016-10-26 12:44:54 -0500

You can add Space Infiltration Effective Leakage Area objects now to space types or spaces. I just confirmed that they can be removed from both locations without being orphaned. See screenshots below.

If however you already have a model where one of these is not assigned to a space or space type, then you won't be able to see it in the GUI to delete it. The measure that remove's orphan objects doesn't currently check for Space Infiltration Effective Leakage Area objects. You can open a copy of your model in a text editor, and search for "OS:SpaceInfiltration:EffectiveLeakageArea,"

Then delete the entire object that should look something like this.

OS:SpaceInfiltration:EffectiveLeakageArea,
  {0d291937-aaf7-4580-b4e7-a156b722c4eb}, !- Handle
  Space Infiltration Effective Leakage Area 1, !- Name
  {63ae72ce-7a63-49e4-b07c-ebed24fe8d91}, !- Space or SpaceType Name
  ,                                       !- Schedule Name
  100,                                    !- Effective Air Leakage Area {cm2}
  0.1,                                    !- Stack Coefficient
  0.1;                                    !- Wind Coefficient

Here are screenshots of object being removed in SpaceType and Spaces tabs.
(Click the black "x" in the top right of the "edit" tab to remove the object) image description

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Thank you so much for your prompt reply and super clear explanation! Deleting the space infiltration leakage area objects attached to the space types solved my problem :) You guys rock!! This forum is awesome... thank you so much for all your hard work :D