LBNL released the Modelica Buildings Library 4.0.0 and BuildingsPy 1.6.0.

Buildings 4.0.0 is the first release that is based on the Modelica IBPSA
Library (https://github.com/ibpsa/modelica). All models simulate with
Dymola 2017 FD01 and with JModelica, and the results of these simulators
have been cross-compared and are equal within the expected tolerance.

This version contains the following major additions:

- Buildings.Experimental.DistrictHeatingCooling with models for district
heating and cooling with bi-directional flow in the distribution pipes.
- Buildings.Fluid.FMI.Adaptors and Buildings.Fluid.FMI.ExportContainers,
which allow export of HVAC systems and of thermal zones as Functional
Mockup Units.
- Buildings.Fluid.HeatExchangers.ActiveBeams, with active beams for
cooling and heating.
- Buildings.Fluid.HeatExchangers.DXCoils.WaterCooled, with water-cooled
direct expansion cooling coils.
- Buildings.ThermalZones.ReducedOrder, with reduced order models of
thermal zones based on VDI 6007 that are suitable for district energy
simulation.
- The models Buildings.HeatTransfer.Conduction.SingleLayer,
Buildings.HeatTransfer.Conduction.MultiLayer, and
Buildings.HeatTransfer.Windows.Window have been refactored to add the
option to place a state at the surface of a construction. This leads in
many examples that use the room model to a 20% to 40% faster simulation.
- The models Buildings.Fluid.HeatPumps.ReciprocatingWaterToWater and
Buildings.Fluid.HeatPumps.ScrollWaterToWater have been added.

This release also improves various existing models.

For a detailed list of changes, see
http://simulationresearch.lbl.gov/modelica/releases/v4.0.0/help/Buildings_UsersGuide_ReleaseNotes.html#Buildings.UsersGuide.ReleaseNotes.Version_4_0_0

For more information and download, visit
http://simulationresearch.lbl.gov/modelica/