classVersion_14_0_0

Version 14.0.0

Extends from Modelica.Icons.ReleaseNotes (Icon for release notes in documentation).

Information

Version 14.0.0 is ... xxx

The following new libraries have been added:

Buildings.Applications.DataCenters.LiquidCooled System models for liquid cooled data centers.
Buildings.Fluid.DataCenterEquipment Component models for liquid cooled data centers, such as CDUs and racks.

The following new components have been added to existing libraries:

Buildings.Fluid.Geothermal
Buildings.Fluid.Geothermal.Borefields.TOUGH Created models and the user guide for coupled simulation between Modelica simulation and the TOUGH simulation that calculates the ground response.
This is for issue 1495.
Buildings.Fluid.BaseClasses.FlowModels
Buildings.Fluid.BaseClasses.FlowModels.powerLaw_dp
Buildings.Fluid.BaseClasses.FlowModels.powerLaw_m_flow
Buildings.Fluid.BaseClasses.FlowModels.powerLaw_dp_der
Buildings.Fluid.BaseClasses.FlowModels.powerLaw_m_flow_der
Buildings.Fluid.BaseClasses.FlowModels.powerLaw_dp_der2
Buildings.Fluid.BaseClasses.FlowModels.powerLaw_m_flow_der2
Buildings.Fluid.BaseClasses.FlowModels.powerLawData
Added functions for pressure drop calculations with flow exponents between 1 and 2, enabling modeling of partially turbulent flows such as in microchannel heat exchangers.
This is for Buildings, #4620.

The following existing components have been improved in a backward compatible way:

Buildings.Air.Systems.SingleZone.VAV.Examples.OptimalStart
Buildings.Air.Systems.SingleZone.VAV.Examples.OptimalStart.BaseClasses.ZoneWithAHUConventional
Buildings.Air.Systems.SingleZone.VAV.Examples.OptimalStart.BaseClasses.ZoneWithAHUG36
Changed the class type from block to model.
This is for Buildings, issue 4606.
Buildings.Fluid.FixedResistances
Buildings.Fluid.FixedResistances.PressureDrop Updated to allow a flow exponent between 1 and 2, enabling modeling of partially turbulent flows such as in microchannel heat exchangers.
This is for Buildings, #4620.
Buildings.Fluid.FixedResistances.BaseClasses.PlugFlowTransportDelay Added nominal attribute to state variable.
This is for IBPSA, issue 2132.
Buildings.Fluid.HeatExchangers
Buildings.Fluid.HeatExchangers.DryCoilCounterFlow
Buildings.Fluid.HeatExchangers.DryCoilDiscretized
Buildings.Fluid.HeatExchangers.DryCoilEffectivenessNTU
Buildings.Fluid.HeatExchangers.PlateHeatExchangerEffectivenessNTU
Buildings.Fluid.HeatExchangers.WetCoilCounterFlow
Buildings.Fluid.HeatExchangers.WetCoilDiscretized
Buildings.Fluid.HeatExchangers.WetCoilEffectivenessNTU
Updated parameters to consistently expose ratio of heat transfer coefficients and exponents for convective heat transfer coefficients.
This is for Buildings, #4620.
Buildings.Fluid.Interfaces
Buildings.Fluid.Interfaces.ConservationEquation Added nominal attribute to state variable.
This is for IBPSA, issue 2132.
Buildings.Fluid.Sensors
Buildings.Fluid.Sensors.DensityTwoPort
Buildings.Fluid.Sensors.EnthalpyFlowRate
Buildings.Fluid.Sensors.EntropyFlowRate
Buildings.Fluid.Sensors.LatentEnthalpyFlowRate
Buildings.Fluid.Sensors.MassFractionTwoPort
Buildings.Fluid.Sensors.PPMTwoPort
Buildings.Fluid.Sensors.RelativeHumidityTwoPort
Buildings.Fluid.Sensors.SensibleEnthalpyFlowRate
Buildings.Fluid.Sensors.SpecificEnthalpyTwoPort
Buildings.Fluid.Sensors.SpecificEntropyTwoPort
Buildings.Fluid.Sensors.TemperatureTwoPort
Buildings.Fluid.Sensors.TemperatureWetBulbTwoPort
Buildings.Fluid.Sensors.TraceSubstancesTwoPort
Buildings.Fluid.Sensors.Velocity
Buildings.Fluid.Sensors.VolumeFlowRate
Added nominal attribute to state variable.
This is for IBPSA, issue 2132.
Buildings.HeatTransfer.Windows
Buildings.HeatTransfer.Windows.BaseClasses.Overhang Changed the class type from block to model.
This is for Buildings, issue 4606.
Buildings.BoundaryConditions
Buildings.BoundaryConditions.SolarGeometry.IncidenceAngle
Buildings.BoundaryConditions.SolarGeometry.ZenithAngle
Buildings.BoundaryConditions.SolarIrradiation.DiffuseIsotropic
Buildings.BoundaryConditions.SolarIrradiation.DiffusePerez
Buildings.BoundaryConditions.SolarIrradiation.DirectTiltedSurface
Buildings.BoundaryConditions.SolarIrradiation.GlobalPerezTiltedSurface
Changed the class type from block to model.
This is for IBPSA, issue 2122.
Buildings.Controls.OBC.CDL
Buildings.Controls.OBC.CDL.Integers.Change
Buildings.Controls.OBC.CDL.Logical.Change
Replaced initial equation with start attribute on input.
This is for Buildings, issue 4581.
Buildings.Controls.OBC.CDL.Logical.Edge
Buildings.Controls.OBC.CDL.Logical.FallingEdge
Buildings.Controls.OBC.CDL.Logical.Pre
Buildings.Controls.OBC.CDL.Logical.TrueFalseHold
Replaced initial equation with start attribute on input.
This is for IBPSA, #2136.
Buildings.ThermalZones.Detailed
Buildings.ThermalZones.Detailed.Examples.FFD Improved C source codes and recompiled FFD library to allow the examples being simulated with OpenModelica.
This is for Buildings, #4015.
Buildings.Fluid.Sources
Buildings.Fluid.Sources.BaseClasses.PartialSource
Buildings.Fluid.Sources.BaseClasses.PartialAirSource
Removed deprecated cardinality function.
Removed protected parameter flowDirection as it was set to Bidirectional and had no effect on the model. The annoation mayOnlyConnectOnce must not be used for these models as they are often used to set the reference presssure in closed system flow networks.
This is for Buildings, #4607.
Buildings.Fluid.Sources.TraceSubstancesFlowSource Removed deprecated cardinality function and replaced with mayOnlyConnectOnce annotation.
Removed protected parameter flowDirection as it was set to Bidirectional and had no effect on the model.
This is for Buildings, #4607.
Buildings.Templates
Buildings.Templates.Components.Fans.ArrayVariable Buildings.Templates.Components.Fans.SingleConstant Buildings.Templates.Components.Fans.SingleVariable Buildings.Templates.Components.Pumps.Multiple Buildings.Templates.Components.Pumps.Single Refactored to use a compiler-friendly mover model.
This is for Buildings, #4653.
Buildings.Templates.Plants.Controls.HeatPumps.AirToWater Refactored with a single instance of SortRuntime for both modes.
This is for Buildings, #4624.
Buildings.Templates.Plants.Controls.StagingRotation.EquipmentAvailability Removed unnecessary Or and And blocks.
This is for Buildings, #4624.
Buildings.Templates.Plants.Controls.StagingRotation.EquipmentEnable Added logic to remove unavailable equipment from staging order. Removed restriction on enable state updates. Modularized the implementation.
This is for Buildings, #4624.
Buildings.Templates.Plants.Controls.StagingRotation.SortRuntime Corrected runtime weighting for unavailable units. Updated handling and default value of runtime initialization.
This is for Buildings, #4624.
Buildings.Templates.Plants.Controls.Utilities.TrueArrayConditional Refactored using CDL Elementary Blocks.
This is for Buildings, #4624.
Buildings.ThermalZones.EnergyPlus_24_2_0
Buildings.ThermalZones.EnergyPlus_24_2_0.Validation.MultipleBuildings Improved C source codes to allow the validation model being simulated with OpenModelica.
This is for Buildings, #3345.
Buildings.ThermalZones.EnergyPlus_24_2_0.OpaqueConstruction Removed deprecated cardinality function and replaced with mustBeConnected annotation.
This is for Buildings, #4607.
Buildings.Utilities.IO.BCVTB
Buildings.Utilities.IO.BCVTB.BaseClasses.FluidInterface Removed protected parameter flowDirection as it was set to Bidirectional and had no effect on the model.
This is for Buildings, #4607.
Buildings.Utilities.Psychrometrics
Buildings.Utilities.Psychrometrics.TWetBul_TDryBulXi Added nominal attribute for temperature.
This is for IBPSA, #2155.

The following existing components have been improved in a non-backward compatible way:

Buildings.ThermalZones.EnergyPlus_24_2_0
Buildings.ThermalZones.EnergyPlus_24_2_0.BaseClasses.SpawnExternalObject Corrected C function implementation to comply with Modelica Language Standard.
This change only affects the C function implementation and does not impact the Modelica function signature.
This is for issue 4658.

The following critical errors have been fixed (i.e., errors that can lead to wrong simulation results):

Buildings.Fluid.HeaExchangers
Buildings.Fluid.HeaExchangers.DryCooler Corrected the initialization of the efficiency, which assumed counter flow rather than cross flow with both streams unmixed.
This is for Buildings, #4648.

The following uncritical errors have been fixed (i.e., errors that do not lead to wrong simulation results, e.g., units are wrong or errors in documentation):

Buildings.Fluid.DXSystems
Buildings.Fluid.DXSystems.Cooling.BaseClasses.Evaporation Added missing variable assignment for ununsed variable in a branch that will not compute evaporation.
This is for Buildings, #4715.
Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors
Buildings.Fluid.Geothermal.Borefields.BaseClasses.HeatTransfer.ThermalResponseFactors.gFunction Initialized local variables A and B to avoid use of uninitialized elements of a matrix. This update does not change the results.
This is for Buildings, #4707.
Buildings.Fluid.HeatPumps.ModularReversible.BaseClasses
Buildings.Fluid.HeatPumps.ModularReversible.BaseClasses.PartialReversibleRefrigerantMachine Corrected the flow reversal parameter in the condenser mass flow sensor (allowFlowReversalEva was used instead of allowFlowReversalCon). Also corrected the sensor description from evaporator to condenser.
This is for IBPSA, #2162.