<div dir="ltr"><p style="box-sizing:border-box;margin:0px 0px 10px;color:rgb(2,46,77);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px">The Modelica Buildings Library 12.0.0, 11.1.0 and 10.1.1 were released on March 17, 2025.</p><p style="box-sizing:border-box;margin:0px 0px 10px;color:rgb(2,46,77);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px">The Modelica Buildings Library 12.0.0 is a major release. Version 11.1.0 is a minor release with new models, version 10.1.1 is a maintenance release, and both are backward compatible with 11.0.0 and 10.1.0, respectively. All three versions contain various model improvements and versions 12.0.0 and 11.1.0 also include new models.</p><p style="box-sizing:border-box;margin:0px 0px 10px;color:rgb(2,46,77);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px">BuildingsPy 5.2.0 adds features for Continuous Integration testing of Modelica libraries, for automation of Dymola simulations without a window connection, and it contains various bug fixes.</p><h2 id="gmail-the-following-major-changes-have-been-done-for-the-modelica-buildings-library-1200" style="box-sizing:border-box;font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-weight:500;line-height:1.1;color:rgb(2,46,77);margin-top:20px;margin-bottom:10px;font-size:1.7em">The following major changes have been done for the Modelica Buildings Library 12.0.0:</h2><ul style="box-sizing:border-box;margin-top:0px;margin-bottom:10px;color:rgb(2,46,77);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px"><li style="box-sizing:border-box">The EnergyPlus coupling has been updated to EnergyPlus 24.2.0, and the implementation that uses EnergyPlus 9.6.0 has been moved to the <code style="box-sizing:border-box;font-family:Menlo,Monaco,Consolas,"Courier New",monospace;font-size:12.6px;padding:2px 4px;color:rgb(117,0,0);background-color:rgb(245,245,245);border-radius:4px;border:0px">Obsolete</code> package.</li><li style="box-sizing:border-box">The package <code style="box-sizing:border-box;font-family:Menlo,Monaco,Consolas,"Courier New",monospace;font-size:12.6px;padding:2px 4px;color:rgb(117,0,0);background-color:rgb(245,245,245);border-radius:4px;border:0px">Buildings.Fluid.Geothermal.ZonedBorefields</code> has been added that allows modeling geothermal borefields in which groups of boreholes are operated with different mass flow rates and inlet temperatures, for example to create a hot core and warm perimeter.</li><li style="box-sizing:border-box">The template models for air-source heat pump and chiller plants have been updated to allow an optional side-stream water-to-water heat recovery heat pump, and to allow optional buffer tanks on the hot or cold side. Also, its control has been updated.</li><li style="box-sizing:border-box">The control sequences in the package <code style="box-sizing:border-box;font-family:Menlo,Monaco,Consolas,"Courier New",monospace;font-size:12.6px;padding:2px 4px;color:rgb(117,0,0);background-color:rgb(245,245,245);border-radius:4px;border:0px">Buildings.DHC.ETS</code> and <code style="box-sizing:border-box;font-family:Menlo,Monaco,Consolas,"Courier New",monospace;font-size:12.6px;padding:2px 4px;color:rgb(117,0,0);background-color:rgb(245,245,245);border-radius:4px;border:0px">Buildings.DHC.Plants</code> have been updated to comply with ASHRAE Standard 231P (Control Description Language).</li><li style="box-sizing:border-box">For pumps, fans, valves and dampers, changed the model for the actuator position. The new implementation changes the actuator position at a constant speed defined by the rise time (fans and pumps) or the stroke time (valves and dampers) rather than a second order filter. This gives a more realistic response, and also simplifies the control loop tuning.</li></ul><p style="box-sizing:border-box;margin:0px 0px 10px;color:rgb(2,46,77);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px">For a detailed list of changes, see <a href="https://simulationresearch.lbl.gov/modelica/releases/v12.0.0/help/Buildings_UsersGuide_ReleaseNotes.html" style="box-sizing:border-box;background-color:transparent;color:rgb(117,0,0)">https://simulationresearch.lbl.gov/modelica/releases/v12.0.0/help/Buildings_UsersGuide_ReleaseNotes.html</a></p><p style="box-sizing:border-box;margin:0px 0px 10px;color:rgb(2,46,77);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px">The library has been tested with Dymola 2025x, OpenModelica 1.24.0, OPTIMICA 1.55.11 and recent versions of Impact.</p><h2 id="gmail-the-following-major-changes-have-been-done-for-the-modelica-buildings-library-1110" style="box-sizing:border-box;font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-weight:500;line-height:1.1;color:rgb(2,46,77);margin-top:20px;margin-bottom:10px;font-size:1.7em">The following major changes have been done for the Modelica Buildings Library 11.1.0:</h2><p style="box-sizing:border-box;margin:0px 0px 10px;color:rgb(2,46,77);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px">A new package with heat pump models has been added. The models can be operated in reversible mode to provide heating or cooling, and can be configured to use various approaches to compute performance, such as data tables or Carnot analogy.</p><p style="box-sizing:border-box;margin:0px 0px 10px;color:rgb(2,46,77);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px">Also, various minor model improvements and bug fixes have been implemented.</p><p style="box-sizing:border-box;margin:0px 0px 10px;color:rgb(2,46,77);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px">For a detailed list of changes, see <a href="https://simulationresearch.lbl.gov/modelica/releases/v11.0.0/help/Buildings_UsersGuide_ReleaseNotes.html" style="box-sizing:border-box;background-color:transparent;color:rgb(117,0,0)">https://simulationresearch.lbl.gov/modelica/releases/v11.0.0/help/Buildings_UsersGuide_ReleaseNotes.html</a></p><p style="box-sizing:border-box;margin:0px 0px 10px;color:rgb(2,46,77);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px">The library has been tested with Dymola 2024x Refresh 1, OpenModelica 1.24.0, OPTIMICA 1.55.11 and recent versions of Impact.</p><h2 id="gmail-the-following-major-changes-have-been-done-for-the-modelica-buildings-library-1011" style="box-sizing:border-box;font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-weight:500;line-height:1.1;color:rgb(2,46,77);margin-top:20px;margin-bottom:10px;font-size:1.7em">The following major changes have been done for the Modelica Buildings Library 10.1.1:</h2><p style="box-sizing:border-box;margin:0px 0px 10px;color:rgb(2,46,77);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px">Models have been updated to improve performance, to ensure compliance with the Modelica Language Standard and to correct model errors.</p><p style="box-sizing:border-box;margin:0px 0px 10px;color:rgb(2,46,77);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px">For a detailed list of changes, see <a href="https://simulationresearch.lbl.gov/modelica/releases/v10.1.1/help/Buildings_UsersGuide_ReleaseNotes.html" style="box-sizing:border-box;background-color:transparent;color:rgb(117,0,0)">https://simulationresearch.lbl.gov/modelica/releases/v10.1.1/help/Buildings_UsersGuide_ReleaseNotes.html</a></p><p style="box-sizing:border-box;margin:0px 0px 10px;color:rgb(2,46,77);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px">The library has been tested with Dymola 2024x Refresh 1, OpenModelica 1.24.0, OPTIMICA 1.55.11 and recent versions of Impact.</p><h2 id="gmail-the-following-changes-have-been-done-for-buildingspy-520" style="box-sizing:border-box;font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-weight:500;line-height:1.1;color:rgb(2,46,77);margin-top:20px;margin-bottom:10px;font-size:1.7em">The following changes have been done for BuildingsPy 5.2.0:</h2><ul style="box-sizing:border-box;margin-top:0px;margin-bottom:10px;color:rgb(2,46,77);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px"><li style="box-sizing:border-box">Updated pyfunnel requirement to version 1.0.2 to avoid a problem with regular expressions. (See <a href="https://github.com/lbl-srg/BuildingsPy/issues/594" style="box-sizing:border-box;background-color:transparent;color:rgb(117,0,0)">https://github.com/lbl-srg/BuildingsPy/issues/594</a>.)</li><li style="box-sizing:border-box">In buildingspy/simulate/Dymola.py and in buildingspy/development/regressiontest.py, switched simulator from dymola to dmc unless a gui window is requested. (See <a href="https://github.com/lbl-srg/BuildingsPy/issues/590" style="box-sizing:border-box;background-color:transparent;color:rgb(117,0,0)">https://github.com/lbl-srg/BuildingsPy/issues/590</a>.)</li><li style="box-sizing:border-box">In buildingspy/simulate/OpenModelica.py, added support for setNumberOfIntervals. (See <a href="https://github.com/lbl-srg/BuildingsPy/issues/585" style="box-sizing:border-box;background-color:transparent;color:rgb(117,0,0)">https://github.com/lbl-srg/BuildingsPy/issues/585</a>.)</li><li style="box-sizing:border-box">In buildingspy/simulate/OpenModelica.py, changed loading of Modelica libraries. (See <a href="https://github.com/lbl-srg/BuildingsPy/issues/586" style="box-sizing:border-box;background-color:transparent;color:rgb(117,0,0)">https://github.com/lbl-srg/BuildingsPy/issues/586</a>.)</li><li style="box-sizing:border-box">In buildingspy/simulate/base_simulator.py, corrected statement for error reporting. (See <a href="https://github.com/lbl-srg/BuildingsPy/issues/583" style="box-sizing:border-box;background-color:transparent;color:rgb(117,0,0)">https://github.com/lbl-srg/BuildingsPy/issues/583</a>.)</li><li style="box-sizing:border-box">In buildingspy/development/merger.py, added a new comment format to allow excluding Modelica code for certain libraries. (See <a href="https://github.com/lbl-srg/BuildingsPy/issues/566" style="box-sizing:border-box;background-color:transparent;color:rgb(117,0,0)">https://github.com/lbl-srg/BuildingsPy/issues/566</a>.)</li><li style="box-sizing:border-box">In buildingspy/development/regressiontest.py, add option to create reference results in batch mode. (See <a href="https://github.com/lbl-srg/BuildingsPy/issues/560" style="box-sizing:border-box;background-color:transparent;color:rgb(117,0,0)">https://github.com/lbl-srg/BuildingsPy/issues/560</a>.)</li><li style="box-sizing:border-box">In buildingspy/development/regressiontest.py, add option to get the coverage rate, i.e., what percentage of examples are covered by regression tests. (See <a href="https://github.com/lbl-srg/BuildingsPy/issues/253" style="box-sizing:border-box;background-color:transparent;color:rgb(117,0,0)">https://github.com/lbl-srg/BuildingsPy/issues/253</a>.)</li><li style="box-sizing:border-box">For Optimica regression tests, added check for Integers that are too large to be represented</li><li style="box-sizing:border-box">In buildingspy/development/refactor.py, corrected moving images to avoid creating a directory if the target directory already exists. (See <a href="https://github.com/lbl-srg/BuildingsPy/pull/548" style="box-sizing:border-box;background-color:transparent;color:rgb(117,0,0)">https://github.com/lbl-srg/BuildingsPy/pull/548</a>.)</li><li style="box-sizing:border-box">In buildingspy/development/validator.py, added method validateHyperlinks() that searches for broken hyperlinks. (See <a href="https://github.com/lbl-srg/BuildingsPy/issues/544" style="box-sizing:border-box;background-color:transparent;color:rgb(117,0,0)">https://github.com/lbl-srg/BuildingsPy/issues/544</a>.)</li><li style="box-sizing:border-box">For Optimica regression tests, added check for connector to itself (See <a href="https://github.com/lbl-srg/BuildingsPy/issues/504" style="box-sizing:border-box;background-color:transparent;color:rgb(117,0,0)">https://github.com/lbl-srg/BuildingsPy/issues/504</a>.)</li><li style="box-sizing:border-box">In buildingspy/development/refactor.py, updated writing the Modelica package.order file to avoid changing the UsersGuide order. (See <a href="https://github.com/lbl-srg/BuildingsPy/issues/541" style="box-sizing:border-box;background-color:transparent;color:rgb(117,0,0)">https://github.com/lbl-srg/BuildingsPy/issues/541</a>.)</li></ul><p style="box-sizing:border-box;margin:0px 0px 10px;color:rgb(2,46,77);font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;font-size:14px">For more information and download of the Modelica Buildings Library and of BuildingsPy, visit <a href="https://simulationresearch.lbl.gov/modelica/" style="box-sizing:border-box;background-color:transparent;color:rgb(117,0,0)">https://simulationresearch.lbl.gov/modelica/</a>.</p></div>