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Add Ideal Loads Air System

asked 2020-01-17 05:13:13 -0600

arnespandau gravatar image

updated 2020-01-17 05:30:36 -0600

Hello Users, I want to add an ideal loads air system to my building. I receive following error:

" * Severe * Orphaned ZoneHVAC object found. This was object never referenced in the input, and was not used. "

Where do i have to reference the input?

Regards, Arne

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Please try to tag your question with the software you're using (EnergyPlus).

Julien Marrec gravatar image Julien Marrec  ( 2020-01-17 05:27:04 -0600 )edit

(The developers (of energyplus and openstudio at least) watch these specific tags to provide support, that's why we often insist on this. Your question risks slipping through the cracks. Also, this is a software agnostic Q&A site, so being clear on which software is good practice too).

Julien Marrec gravatar image Julien Marrec  ( 2020-01-17 05:31:45 -0600 )edit

I am using the IDF Editor Version 9.1.

arnespandau gravatar image arnespandau  ( 2020-01-17 05:39:19 -0600 )edit

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answered 2020-01-17 05:30:25 -0600

You're missing the ZoneHVAC:EquipmentList, and probably the ZoneHVAC:EquipmentConnections.

Take a look at the example file PurchAirTables.idf for example. Here are the actual bits you do need:

  ZoneHVAC:EquipmentList,
    Zone1Equipment,          !- Name
    SequentialLoad,          !- Load Distribution Scheme
    ZoneHVAC:IdealLoadsAirSystem,  !- Zone Equipment 1 Object Type
    Zone1Air,                !- Zone Equipment 1 Name
    1,                       !- Zone Equipment 1 Cooling Sequence
    1,                       !- Zone Equipment 1 Heating or No-Load Sequence
    ,                        !- Zone Equipment 1 Sequential Cooling Load Fraction Schedule Name
    ;                        !- Zone Equipment 1 Sequential Heating Load Fraction Schedule Name

  ZoneHVAC:IdealLoadsAirSystem,
    Zone1Air,                !- Name
    ,                        !- Availability Schedule Name
    NODE_1,                  !- Zone Supply Air Node Name
    [...];

  ZoneHVAC:EquipmentConnections,
    West Zone,               !- Zone Name
    Zone1Equipment,          !- Zone Conditioning Equipment List Name
    Zone1Inlets,             !- Zone Air Inlet Node or NodeList Name
    ,                        !- Zone Air Exhaust Node or NodeList Name
    NODE_4,                  !- Zone Air Node Name
    NODE_5;                  !- Zone Return Air Node or NodeList Name

  NodeList,
    Zone1Inlets,             !- Name
    NODE_1;                  !- Node 1 Name
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Asked: 2020-01-17 05:13:13 -0600

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Last updated: Jan 17 '20