modelTestCellFullBed
Extends from Buildings.ThermalZones.Detailed.MixedAir (Model of a room in which the air is completely mixed).
Information
This is a duplicate model of Buildings.ThermalZones.Detailed.FLEXLAB.Rooms.X3A.TestCell with the wall separating X3A and X3B removed. It is designed for simulations where both X3A and X3B are used in the simulation to model the whole test bed. If a simulation is created using TestCell from both packages the dividing wall will be modeled twice, so one of the two models used must be created without the dividing wall in the model.
This documentation states only the items which are different from the Buildings.ThermalZones.Detailed.FLEXLAB.Rooms.X3A.TestCell model. For documentation on the rest of the walls and connections see that documentation instead.
There are 7 different wall sections described in the model. They are shown in the figure below. This documentation only describes wall section 6.
The different wall sections are entered into the model according to the following table.
| Wall Section Number | Description | Location in Model | Corresponding Layer |
|---|---|---|---|
| 6 | This east wall connects to test cell X3B. This model contains an air gap instead of a model of the wall. It is intended to be connected to the wall model in X3B. | surBou[2] |
Because wall section 6 was moved from datConBou[2] to surBou[2] the reference for other constructions in datConBou have changed as well. These changes are documented in the following table.
| Wall Section Number | Physical Description | Location in TestCell | Location in TestCelNoDiv |
|---|---|---|---|
| 4 | Insulated wall separating the test cell and the electrical room | datConBou[5] | datConBou[4] |
| 5 | Partition wall and door separating the test cell and the closet | Wall: datConBou[3] Door: datConBou[4] |
Wall: datConBou[2] Door: datConBou[3] |
Several of the connections in this model are intended to be connected to specific surfaces in other room models. The following table describes the connections to models outside of the X3A package. The connections in datConExt are not described in the table because they are connected to the external environment, and no additional heat port connections are necessary. A rationale for why the model is created this way is also provided if it is considered necessary.
| Location in TestCell | Description of External Connection | Location in External Model | Rationale |
|---|---|---|---|
| surf_surBou[2] | Dividing wall modeled in ThermalZones.Detailed.FLEXLAB.Rooms.X3B.TestCell | X3B.TestCell.surf_conBou[1] | X3B.TestCell.surf_conBou[1] is the location of the cell dividing wall in the neighboring test cell. Connecting X3A.TestCellNoCelDiv.surf_surBou[2] to this port models heat transfer from the wall in ThermalZones.Detailed.FLEXLAB.Rooms.X3B.TestCell to the air in this space. |
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Integer | NConExt (from ConstructionNumbers) | max(1, nConExt) | Number of elements for exterior constructions |
| Integer | NConExtWin (from ConstructionNumbers) | max(1, nConExtWin) | Number of elements for exterior constructions with windows |
| Integer | NConPar (from ConstructionNumbers) | max(1, nConPar) | Number of elements for partition constructions |
| Integer | NConBou (from ConstructionNumbers) | max(1, nConBou) | Number of elements for constructions that have their outside surface exposed to the boundary of this room |
| Integer | NSurBou (from ConstructionNumbers) | max(1, nSurBou) | Number of elements for surface heat transfer models that connect to constructions that are modeled outside of this room |
| Boolean | haveConExt (from ConstructionNumbers) | nConExt > 0 | Flag to conditionally remove components |
| Boolean | haveConExtWin (from ConstructionNumbers) | nConExtWin > 0 | Flag to conditionally remove components |
| Boolean | haveConPar (from ConstructionNumbers) | nConPar > 0 | Flag to conditionally remove components |
| Boolean | haveConBou (from ConstructionNumbers) | nConBou > 0 | Flag to conditionally remove components |
| Boolean | haveSurBou (from ConstructionNumbers) | nSurBou > 0 | Flag to conditionally remove components |
| ParameterConstruction[NConExt] | datConExt (from ConstructionRecords) | Data for exterior construction | |
| Buildings.ThermalZones.Detailed.BaseClasses.ParameterConstructionWithWindow[NConExtWin] | datConExtWin (from ConstructionRecords) | Data for exterior construction with window | |
| Buildings.ThermalZones.Detailed.BaseClasses.ParameterConstruction[NConPar] | datConPar (from ConstructionRecords) | Data for partition construction | |
| Buildings.ThermalZones.Detailed.BaseClasses.ParameterConstruction[NConBou] | datConBou (from ConstructionRecords) | Data for construction boundary | |
| Buildings.ThermalZones.Detailed.BaseClasses.OpaqueSurface[NSurBou] | surBou (from ConstructionRecords) | Record for data of surfaces whose heat conduction is modeled outside of this room | |
| HeatTransfer.Data.OpaqueConstructions.Brick120 | dummyCon (from ConstructionRecords) | Dummy construction to assign a parameter to the instance | |
| Buildings.HeatTransfer.Data.GlazingSystems.SingleClear3 | dummyGlaSys (from ConstructionRecords) | Dummy construction to assign a parameter to the instance | |
| Boolean | homotopyInitialization (from RoomHeatMassBalance) | true | = true, use homotopy method |
| Modelica.Units.SI.Volume | V (from RoomHeatMassBalance) | AFlo*hRoo | Volume |
| Modelica.Units.SI.Area | AFlo (from RoomHeatMassBalance) | Floor area | |
| Modelica.Units.SI.Length | hRoo (from RoomHeatMassBalance) | Average room height | |
| Boolean | linearizeRadiation (from RoomHeatMassBalance) | true | Set to true to linearize emissive power |
| Data.Constructions.OpaqueConstructions.ExteriorConstructions.Construction10and23 | R16p8Wal | ||
| Data.Constructions.OpaqueConstructions.DividingWalls.CellAndElectricalDividingWall | R52Wal | ||
| Data.Constructions.OpaqueConstructions.Roofs.ASHRAE_901_2010Roof | R20Wal | ||
| Data.Constructions.GlazingSystems.ASHRAE901Gla | glaSys | ||
| Data.Constructions.OpaqueConstructions.PartitionConstructions.PartitionWall | parCon | ||
| Data.Constructions.OpaqueConstructions.DividingWalls.TestCellDividngWall | celDiv | Construction of wall connecting to cell UF90X3B | |
| Data.Constructions.OpaqueConstructions.DividingWalls.TestBedDividingWall | bedDiv | Construction of wall connecting to cell UF90X2B | |
| Data.Constructions.OpaqueConstructions.PartitionConstructions.PartitionDoor | parDoo | Door used in partition walls in FLEXLAB test cells | |
| Data.Constructions.OpaqueConstructions.ExteriorConstructions.ExteriorDoorInsulated | extDoo | Construction of an exterior door | |
| Exterior constructions | |||
| Integer | nConExt (from ConstructionNumbers) | Number of exterior constructions | |
| Integer | nConExtWin (from ConstructionNumbers) | Number of window constructions | |
| Partition constructions | |||
| Integer | nConPar (from ConstructionNumbers) | Number of partition constructions | |
| Boundary constructions | |||
| Integer | nConBou (from ConstructionNumbers) | Number of constructions that have their outside surface exposed to the boundary of this room | |
| Integer | nSurBou (from ConstructionNumbers) | Number of surface heat transfer models that connect to constructions that are modeled outside of this room | |
| General › Ports | |||
| Integer | nPorts (from RoomHeatMassBalance) | 0 | Number of ports |
| Dynamics › Glazing system | |||
| Boolean | steadyStateWindow (from RoomHeatMassBalance) | false | Set to false to add thermal capacity at window, which generally leads to faster simulation |
| Convective heat transfer | |||
| Buildings.HeatTransfer.Types.InteriorConvection | intConMod (from RoomHeatMassBalance) | Buildings.HeatTransfer.Types.InteriorConvection.Temperature | Convective heat transfer model for room-facing surfaces of opaque constructions |
| Modelica.Units.SI.CoefficientOfHeatTransfer | hIntFixed (from RoomHeatMassBalance) | 3.0 | Constant convection coefficient for room-facing surfaces of opaque constructions |
| Buildings.HeatTransfer.Types.ExteriorConvection | extConMod (from RoomHeatMassBalance) | Buildings.HeatTransfer.Types.ExteriorConvection.TemperatureWind | Convective heat transfer model for exterior facing surfaces of opaque constructions |
| Modelica.Units.SI.CoefficientOfHeatTransfer | hExtFixed (from RoomHeatMassBalance) | 10.0 | Constant convection coefficient for exterior facing surfaces of opaque constructions |
| Nominal condition | |||
| Modelica.Units.SI.MassFlowRate | m_flow_nominal (from RoomHeatMassBalance) | V*1.2/3600 | Nominal mass flow rate |
| Experimental (may be changed in future releases) | |||
| Boolean | sampleModel (from RoomHeatMassBalance) | false | Set to true to time-sample the model, which can give shorter simulation time if there is already time sampling in the system model |
| Ports | |||
| Boolean | use_C_flow (from MixedAir) | false | Set to true to enable input connector for trace substance that is connected to room air |
| Dynamics › Zone air | |||
| Modelica.Fluid.Types.Dynamics | energyDynamics (from MixedAir) | Modelica.Fluid.Types.Dynamics.DynamicFreeInitial | Type of energy balance for zone air: dynamic (3 initialization options) or steady state |
| Real | mSenFac (from MixedAir) | 1 | Factor for scaling the sensible thermal mass of the zone air volume |
| Initialization | |||
| Medium.AbsolutePressure | p_start (from MixedAir) | Medium.p_default | Start value of zone air pressure |
| Medium.Temperature | T_start (from MixedAir) | Medium.T_default | Start value of zone air temperature |
| Medium.MassFraction[Medium.nX] | X_start (from MixedAir) | Medium.X_default | Start value of zone air mass fractions m_i/m |
| Medium.ExtraProperty[Medium.nC] | C_start (from MixedAir) | fill(0, Medium.nC) | Start value of zone air trace substances |
| Medium.ExtraProperty[Medium.nC] | C_nominal (from MixedAir) | fill(1E-2, Medium.nC) | Nominal value of zone air trace substances. (Set to typical order of magnitude.) |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Fluid.Vessels.BaseClasses.VesselFluidPorts_b[nPorts] | ports (from RoomHeatMassBalance) | Fluid inlets and outlets | |
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | heaPorAir (from RoomHeatMassBalance) | Heat port to air volume | |
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | heaPorRad (from RoomHeatMassBalance) | Heat port for radiative heat gain and radiative temperature | |
| Modelica.Blocks.Interfaces.RealInput[nConExtWin] | uWin (from RoomHeatMassBalance) | Control signal for window state (used for electrochromic windows, removed otherwise) | |
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a[nConBou] | surf_conBou (from RoomHeatMassBalance) | Heat port at surface b of construction conBou | |
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a[nSurBou] | surf_surBou (from RoomHeatMassBalance) | Heat port of surface that is connected to the room air | |
| Modelica.Blocks.Interfaces.RealInput[3] | qGai_flow (from RoomHeatMassBalance) | Radiant, convective and latent heat input into room (positive if heat gain) | |
| BoundaryConditions.WeatherData.Bus | weaBus (from RoomHeatMassBalance) | Weather data | |
| Modelica.Blocks.Interfaces.RealInput[nConExtWin] | uSha (from MixedAir) | Control signal for the shading device (removed if no shade is present) | |
| Modelica.Blocks.Interfaces.RealInput[Medium.nC] | C_flow (from MixedAir) | Trace substance mass flow rate added to the room air. Enable if use_C_flow = true | |
| Buildings.Controls.OBC.CDL.Interfaces.RealOutput[NConExtWin] | HGlo (from MixedAir) | Global solar irradiance | |
| Buildings.Controls.OBC.CDL.Interfaces.RealOutput[NConExtWin] | QTraGlo (from MixedAir) | Transmitted global solar radiation |
Components
Revisions
- Sept 18, 2013 by Peter Grant:
First implementation.