Fatal error in zones without floor

asked 2025-04-23 02:50:18 -0500

Keigo's avatar

updated 2025-04-23 09:12:03 -0500

A bug report. I tested Construction:AirBoundary with the following simple four-zone model. Construction:AirBoundary is applied to the ceiling/floor surfaces between the lower zones and upper zones.

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When I added Lights by LightingLevel to the two upper zones using ZoneList, the simulation terminated with the following fatal error.

   ** Severe  ** GetInternalHeatGains: Zone floor area is zero when allocating Lights loads to Spaces.
   **   ~~~   ** Occurs for Lights object =OFFICE::OFFICE_OPEN_LGT in Zone=2F_ZONE_1
   ** Severe  ** GetInternalHeatGains: Zone floor area is zero when allocating Lights loads to Spaces.
   **   ~~~   ** Occurs for Lights object =OFFICE::OFFICE_OPEN_LGT in Zone=2F_ZONE_2
   **  Fatal  ** GetInternalHeatGains: Errors found in Getting Internal Gains Input, Program Stopped
   ...Summary of Errors that led to program termination:
   ..... Reference severe error count=2
   ..... Last severe error=GetInternalHeatGains: Zone floor area is zero when allocating Lights loads to Spaces.

The simulation completes successsfully without the fatal error when the lighting load is added to each zone without using ZoneList.

The idf file (V24-2-0) is here.

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Keigo's avatar Keigo  ( 2025-04-23 21:37:28 -0500 )edit