2026 08 19_meeting - lbl-srg/soep GitHub Wiki
Date: August 19, 2026, 8:15am-9am Pacific Times
The purpose of this meeting is to coordinate the development of the Modelica Buildings Library, including the integration with EnergyPlus and OpenStudio.
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- Previous action items
- AOP alignment
- Auto-sizing
- Modelica Buildings Library
- Other items
FY26 AOPs.
LBNL: 9/30/26: Released Modelica Buildings Library with additional models for high performance heating and cooling plants, and with HVAC auto-sizing capability based on automated EnergyPlus load calculation
Draft specification at https://lbl-srg.github.io/soep/softwareArchitecture.html.
Documentation is updated. Examples are running. One item to add is a parameter in Modelica for zone infiltration, as currently infiltration is not regarded. This is done.
Change ACH to ACS as input with displayUnit=1/h. Propagate media properties to C code.
Zone and system multipliers are not supported and trigger an error, see https://github.com/lbl-srg/soep/pull/69/changes Support for this should be proposed for the next AOP.
Once that is done, it is close to be wrapped up and merged.
Backlog on fixing various issue, focus on https://github.com/lbl-srg/modelica-buildings/milestone/30
Block "summary" with main variables.
PNNL priority is zone side templates.
PNNL has milestones for end of FY to implement heat pump water heater, mostly using existing classes. Karthik works on finishing it for the PR.
Finish DX dehumidifier. Jianjun to update model, see review comments. https://github.com/lbl-srg/modelica-buildings/pull/3475
Finish direct evaporative cooler. Karthik to address feedback. https://github.com/lbl-srg/modelica-buildings/pull/3755
ORNL was working on template for DOAS. Depends on air filter and dx dehumidifier.
Spawn related PR at https://github.com/lbl-srg/modelica-buildings/projects/2
Issues are at https://github.com/lbl-srg/modelica-buildings/issues?q=is%3Aissue+is%3Aopen+label%3Aspawn
Next, work on https://github.com/lbl-srg/modelica-buildings/projects/2
OS compatibility matrix is at https://github.com/NREL/OpenStudio/wiki/OpenStudio-SDK-Version-Compatibility-Matrix
None.
Finish the adiabatic cooler model https://github.com/lbl-srg/modelica-buildings/pull/3755 (Jianjun and Weiping work on a merge with their model)
Focus on finishing pending PRs and addressing outstanding tickets.