2021 05 19_meeting

SOEP Coordination meeting

Date: May 19, 2021, 8:15am-9am Pacific Times

The purpose of this meeting is to coordinate the Modelica integration for SOEP.

Meeting information

Join from PC, Mac, Linux, iOS or Android: https://lbnl.zoom.us/my/mwetter

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Agenda

1. Previous action items
2. Modelon
3. Stuart: FMI-QSS
4. Modelica Conference paper
5. Kyle, Michael: EnergyPlus-Modelica coupling.
6. Kyle, Michael: EnergyPlus I/O variables.
7. Michael, Kyle: Support for radiant systems.
8. Other items

Participants

Kyle Benne

Josh New

Baptiste Ravache

Stuart Mentzer

Hubertus Tummescheit

Michael Wetter

Minutes

Milestones

LBL AOP 9/30 (go/no-go): Release that can couple Modelica-based control to E+. OK to release in early 2021.

(https://github.com/lbl-srg/modelica-buildings/milestone/18)

LBL AOP 3/30: Implemented radiant slab coupling in Spawn.

LBL AOP 3/30: Release Buildings Library with radiant slab coupling.

LBL AOP 6/30 (go/no-go): Posted beta version of Spawn (jointly with NREL, Objexx and Modelon)

Modelon

Optimica license protection.

OS X and Linux builds.

Compiler integration

Kyle works on JModelica integration, and once this works, swaps it against OCT.

FMI-QSS

Stuart is working on analysis with Modelon.

Stuart got OCT update, updates status page on test repository. Works first on full review of all test models with new OCT, then goes back to benchmark. Then works on default settings for QSS and goes back to AC control models, then to SimpleHouse.

Stuart to work on a small example that illustrates problems with zero crossing for discussion with Christian. Need a deterministic contract to handle them robustly.

Modelica Conference Paper

To be developed with Kyle and Baptiste as co-author.

Deadline moved to May 10.

EnergyPlus-Modelica coupling

Binary code freeze by April 2.

Issues are at https://github.com/lbl-srg/modelica-buildings/issues?q=is%3Aissue+is%3Aopen+label%3Aspawn

Clarification on https://github.com/lbl-srg/modelica-buildings/issues/2492

Next, work on

• Spawn FMUs are not yet self contained, https://github.com/lbl-srg/modelica-buildings/issues/2054

• [For FY21, Q2] Kyle to fix schedule: https://github.com/lbl-srg/modelica-buildings/issues/2000

  (Kyle either fixes it, or proposes new wording for https://lbl-srg.github.io/soep/softwareArchitecture.html#sending-input-to-energyplus)

• [For FY21, Q2] Kyle to look into numerical instability (walls may be initialized to wrong temperature). See for example Experimental/EnergyPlus/Examples/VAVReheatRefBldgSmallOffice/FloorOpenLoop. The temperature in the attic should not raise in the first hour. (Pending since Nov. 2019)
• Remove warnings issued by EnergyPlus, https://github.com/lbl-srg/modelica-buildings/issues/2220
• Support negative start time in EnergyPlus, https://github.com/lbl-srg/modelica-buildings/issues/1938

LBL AOP 9/30 (go/no-go): Release that can couple Modelica-based control to E+. OK to release in early 2021.

Radiant systems

This is ready for release.

Other items

None.

New action items

None.

Previous action items

Work on open issues for release, https://github.com/lbl-srg/modelica-buildings/milestone/18