[Bldg-sim] Modelica Buildings Library versions 8.0.0 with built-in EnergyPlus coupling, and version 7.0.1 have been released
mwetter at lbl.gov
Wed Jun 9 06:49:39 PDT 2021
LBNL released the Modelica Buildings Library versions 8.0.0 and 7.0.1.
Version 8.0.0 is a major release that contains the first version of the
Spawn of EnergyPlus coupling that has been developed by LBNL and NREL in
collaboration with Modelon and Objexx Engineering.
The following major changes have been done in Version 8.0.0
- The package Buildings.ThermalZones.EnergyPlus
the first version of the Spawn of EnergyPlus coupling that is being
developed at lbl-srg.github.io/soep. The Spawn coupling allows to model
HVAC and controls in Modelica, and graphically connect to EnergyPlus models
for thermal zones, schedules EMS actuators and output variables. This
allows for example to model HVAC systems, HVAC controls and controls for
active facade systems in Modelica, and use the EnergyPlus envelope model to
simulate heat transfer through the building envelope, including the heat
and light transmission through the windows for the current control signal
of the active shade.
- The package Buildings.Experimental.DHC
contains models for district heating and cooling systems that are being
developed for the URBANopt District Energy System software.
- The new media Buildings.Media.Antifreeze.PropyleneGlycolWater
modeling of propylene-glycol water mixtures.
- A new cooling coil model
been added. This model is applicable for fully-dry, partially-wet, and
fully-wet regimes. In contrast to
this model uses the epsilon-NTU relationship rather than a spatial
discretization of the coil. This leads to fewer state variables and
generally to a faster simulation.
- New simplified door models for bi-directional air exchange between
thermal zones are implemented in Buildings.Airflow.Multizone
- Various other models have been improved or added, in particular for
modeling of control sequences using the Control Description Language that
has been developed in the OpenBuildingControl project at obc.lbl.gov
For a detailed list of changes in version 8.0.0, see the 8.0.0 release
Version 7.0.1 is a bug fix release that is compatible with 7.0.0.
The following changes have been done:
- Corrected memory violation on Windows for weather data file with long
- Corrected various misplaced, or missing, declarations of the "each"
- Corrected access to protected classes.
- Reformulated replaceable class to avoid access of components that are
not in the constraining type.
- Added missing parameter declarations for records.
For a detailed list of changes in version 7.0.1, see the 7.0.1 release
Both versions have been tested with Dymola 2021 and 2022, JModelica
(revision 14023), and OPTIMICA (revision OCT-stable-r12473_JM-r14295).
For download, go to simulationresearch.lbl.gov/modelica
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