Modelica Buildings Library 11.0.0, 10.1.0 and 9.1.2, and BuildingsPy 5.1.0 released

The Modelica Buildings Library 11.0.0, 10.1.0 and 9.1.2 were released on April 09, 2024.

The Modelica Buildings Library 11.0.0 is a major release. Version 10.1.0 is a minor release with new models, version 9.1.2 is a maintenance release, and both are backward compatible with 10.0.0 and 9.1.1, respectively. All three versions contain various model improvements and versions 10.1.0 and 11.0.0 also include new models.

BuildingsPy 5.1.0 adds support for updating Continuous Integration test specifications for OpenModelica and Optimica, and it contains bug fixes.

The following major changes have been done for the Modelica Buildings Library 11.0.0:

• A package for central plants with reversible air-to-water heat pumps has been added to Buildings.Templates.Plants.HeatPumps. The package allows configuration of the type of hydronic integration.
• The models for 1st to 5th generation district heating and cooling systems have been expanded and revised, a user guide has been added, and the models have been moved from the package Buildings.Experimental.DHC to Buildings.DHC.
• A package for domestic hot water generation and loads that are served by a district system has been added to Buildings.DHC.Loads.HotWater.
• The initialization of the Spawn model has been refactored to avoid an iteration between Modelica and EnergyPlus as this caused numerical problems for some model configurations.
• The implementation of the blocks for the Control Description Language (CDL), which is being standardized through ASHRAE Standard 231P, has been revised to comply with the latest draft of the standard.
• A tutorial for how to build a simple system model has been added to Buildings.Examples.Tutorial.SimpleHouse.

For a detailed list of changes, see the version 11.0.0 release notes.

The library has been tested with Dymola 2024x, OpenModelica 1.22.1-1, OPTIMICA 1.48.2 and recent versions of Impact.

The following major changes have been done for the Modelica Buildings Library 10.1.0:

• A package to model aquifer thermal energy storage has been added to Buildings.Fluid.Geothermal.Aquifer.

Besides, various minor model improvements and bug fixes have been implemented.

For a detailed list of changes, see the version 10.1.0 release notes.

The library has been tested with Dymola 2024x, OpenModelica 1.22.1-1, OPTIMICA 1.43.4 and recent versions of Impact.

The following major changes have been done for the Modelica Buildings Library 9.1.2:

• The interface for the EnergyPlus zone model has been updated in a backward compatible way to make it easier to couple a radiator the model. See the example Buildings.ThermalZones.EnergyPlus_9_6_0.Examples.SingleFamilyHouse.Radiator.

Besides, various minor model improvements and bug fixes have been implemented.

For a detailed list of changes, see the version 9.1.2 release notes.

The library has been tested with Dymola 2023x, OpenModelica 1.22.0-dev (41-g8a5b18f-1), OPTIMICA 1.43.4 and recent versions of Impact.

The following changes have been done for BuildingsPy 5.0.0:

• In buildingspy.development.regressiontest, corrected bug that caused CI tests to not fail if run in batch mode and a reference file was missing.
• In buildingspy.io.outputfile, corrected error reporting for Dymola that caused a string index out of range.
• Added support to generate unit test configuration file conf.yml for OpenModelica and Optimica tests.