modelZoneCrawlSpaceComplete

Single zone model of glazed home on crawl space with inner walls inertia, air renewal and thermal bridges
Diagram of ZoneCrawlSpaceComplete

Extends from BuildSysPro.Building.Zones.HeatTransfer.ZoneCrawlSpaceGlazedInternalPartitions (Model of parallelepiped zone on crawl space with glazings, in pure thermal modelling, and integrating the internal inertia due to the inner walls).

Information

Model of parallelepiped glazed zone on crawl space, in pure thermal modelling and integrating the internal inertia due to the inner walls, the thermal bridges and the air renewal.

Hypothesis and equations

Parallelepiped single-zone building on crawl space with glazing model, to be connected to a boundary conditions model (left thermal port) and a left realOutput for solar fluxes. By default walls are oriented in the four cardinal points; the orientation modification is represented by the parameter beta. The right thermal port is connected to the inner volume (heat capacity). Floor and ceiling are subject to outside temperatures which are weighted by a coefficient b.

This model inherits from ZoneCrawlSpaceGlazedInternalPartitions and superimposes on it the thermal bridges and the air renewal.

Bibliography

none

Instructions for use

This single zone building model is to be connected to a weather boundary conditions model on the left (outside temperature, sunlight-related data). The right thermal port is connected to the inner volume (heat capacity) and can, if desired, be connected to any model using a thermal port (internal heat gains...).

The walls parameterization is done via the parameter caracParoi, however it still can be done layer by layer without creating any type of wall.

  1. Click on the small arrow of caracParoi + Edit
  2. Fill in the fields on the number of layers, their thickness, the mesh. The parameter positionIsolant is optional
  3. For the mat parameter, click on the small arrow + Edit array, match the number of boxes in a column to the number of materials layer in the window that is displayed, then, in each box, right-click + Insert function call and browse the library to specify the path of the desired material (in Utilities.Data.Solids)

Known limits / Use precautions

To consider walls radiation in long wavelength (LWR), exchange coefficients h must be global exchange coefficients. The inertia of the inner walls is integrated.

Glazings transmit solar fluxes to the floor.

Validations

Valided model - Vincent Magnaudeix 07/2012

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Licensed by EDF under a 3-clause BSD-license
Copyright © EDF 2009 - 2023
BuildSysPro version 3.6.0
Author : Vincent MAGNAUDEIX, EDF (2012)
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Parameters

TypeNameDefaultDescription
Modelica.Units.SI.VolumeVair (from ZoneCrawlSpace)Indoor air volume
Realbeta (from ZoneCrawlSpace)0Correction of vertical walls azimuth (azimuth=azimuth{0,90,180,-90}+beta)
BooleanChoixPint (from ZoneCrawlSpace)falseConsideration of radiative contributions in proportion to surfaces
BooleanChoixGLOext (from ZoneCrawlSpace)falseConsideration of LW radiation (infrared) between vertical walls and the sky
RealbCombles (from ZoneCrawlSpace)0.5Weighting coefficient of ceiling temperatures on lost roofs
RealbVS (from ZoneCrawlSpace)0.5Weighting coefficient of floor temperatures on crawl space
Booleanensoleillement (from ZoneCrawlSpaceGlazed)trueConsideration of solar fluxes
RealTauxRA0.3Air renewal rate in vol/h
RealRpth1/6.423Equivalent resistance due to thermal bridges
Initialisation parameters
Modelica.Units.SI.TemperatureTair (from ZoneCrawlSpace)293.15Indoor air initial temperature
Modelica.Units.SI.TemperatureTp (from ZoneCrawlSpace)293.15Walls initial temperature
BuildSysPro.Utilities.Types.InitCondInitType (from ZoneCrawlSpace)BuildSysPro.Utilities.Types.InitCond.SteadyState
Vertical walls
BuildSysPro.Utilities.Records.GenericWallCaracParoiVert (from ZoneCrawlSpace)Vertical walls characteristics
Modelica.Units.SI.AreaS1nv (from ZoneCrawlSpace)1South wall surface (unglazed)
Modelica.Units.SI.AreaS2nv (from ZoneCrawlSpace)1West wall surface (unglazed)
Modelica.Units.SI.AreaS3nv (from ZoneCrawlSpace)1North wall surface (unglazed)
Modelica.Units.SI.AreaS4nv (from ZoneCrawlSpace)1East wall surface (unglazed)
Modelica.Units.SI.CoefficientOfHeatTransferhextv (from ZoneCrawlSpace)
Modelica.Units.SI.CoefficientOfHeatTransferhintv (from ZoneCrawlSpace)
Realalbedo (from ZoneCrawlSpace)0.2Environment albedo
Realalpha (from ZoneCrawlSpace)0.6Absorption coefficient of the outer surface in the visible
Realeps (from ZoneCrawlSpace)0.6Emissivity in LWR
Horizontal walls › Ceiling
BuildSysPro.Utilities.Records.GenericWallCaracPlaf (from ZoneCrawlSpace)Ceiling characteristics
Modelica.Units.SI.AreaSplaf (from ZoneCrawlSpace)1Ceiling surface
Modelica.Units.SI.CoefficientOfHeatTransferhplaf (from ZoneCrawlSpace)
Modelica.Units.SI.CoefficientOfHeatTransferhintplaf (from ZoneCrawlSpace)
Horizontal walls › Floor
IntegerPlancherActif (from ZoneCrawlSpace)1
Modelica.Units.SI.AreaSplanch (from ZoneCrawlSpace)1Floor surface
Modelica.Units.SI.CoefficientOfHeatTransferhplanch (from ZoneCrawlSpace)
Modelica.Units.SI.CoefficientOfHeatTransferhintplanch (from ZoneCrawlSpace)
IntegernP (from ZoneCrawlSpace)1Number of the layer whose upper border is the site of power injection - must be strictly lower than n
IntegernD (from ZoneCrawlSpace)8Number of discretization slices of the water floor
Modelica.Units.SI.DistanceLtube (from ZoneCrawlSpace)128Floor heating coil length
Modelica.Units.SI.DistanceDiametreInt (from ZoneCrawlSpace)0.013Inner diameter of tube
Modelica.Units.SI.DistanceeT (from ZoneCrawlSpace)0.0015Tube thickness
Horizontal walls › Plancher
BuildSysPro.Utilities.Records.GenericWallCaracPlanch (from ZoneCrawlSpace)Floor characteristics
Parois Horizontales › Floor
Modelica.Units.SI.ThermalConductivitylambdaT (from ZoneCrawlSpace)0.35Tube thermal conductivity
Windows
Modelica.Units.SI.AreaS1v (from ZoneCrawlSpaceGlazed)1South wall glazed surface
Modelica.Units.SI.AreaS2v (from ZoneCrawlSpaceGlazed)1West wall glazed surface
Modelica.Units.SI.AreaS3v (from ZoneCrawlSpaceGlazed)1North wall glazed surface
Modelica.Units.SI.AreaS4v (from ZoneCrawlSpaceGlazed)1East wall glazed surface
Modelica.Units.SI.CoefficientOfHeatTransferU (from ZoneCrawlSpaceGlazed)Glazings thermal conductivity
Realtau (from ZoneCrawlSpaceGlazed)Glazings transmission coefficient
RealAbsFen (from ZoneCrawlSpaceGlazed)0.1Direct and diffuse absorption coefficient of windows
Inner walls › Supporting walls
BuildSysPro.Utilities.Records.GenericWallcaracRef (from ZoneCrawlSpaceGlazedInternalPartitions)Supporting walls characteristics
Modelica.Units.SI.AreaSRef (from ZoneCrawlSpaceGlazedInternalPartitions)1Supporting walls surfaces
Modelica.Units.SI.CoefficientOfHeatTransferhRef (from ZoneCrawlSpaceGlazedInternalPartitions)Supporting walls convective heat transfer coefficient
Inner walls › Light partition walls
BuildSysPro.Utilities.Records.GenericWallcaracCleg (from ZoneCrawlSpaceGlazedInternalPartitions)Light partition walls characteristics
Modelica.Units.SI.AreaSCleg (from ZoneCrawlSpaceGlazedInternalPartitions)1Light partition walls surface
Modelica.Units.SI.CoefficientOfHeatTransferhCleg (from ZoneCrawlSpaceGlazedInternalPartitions)Global exchange coefficient of light partition walls

Connectors

TypeNameDefaultDescription
Modelica.Blocks.Interfaces.RealInput[10]G (from ZoneCrawlSpace)Sun data : {DIFH, DIRN, DIRH, GLOH, t0, CosDir[1:3], Solar azimuth angle, Solar elevation angle}
BuildSysPro.BaseClasses.HeatTransfer.Interfaces.HeatPort_aT_ext (from ZoneCrawlSpace)
BuildSysPro.BaseClasses.HeatTransfer.Interfaces.HeatPort_aT_int (from ZoneCrawlSpace)
Modelica.Blocks.Interfaces.RealInput[2]WaterIn (from ZoneCrawlSpace)Vector containing 1-the fluid temperature (K), 2-the flow(kg/s)
Modelica.Blocks.Interfaces.RealOutput[2]WaterOut (from ZoneCrawlSpace)Vector containing 1-the fluid temperature (K), 2-the flow(kg/s)
Modelica.Blocks.Interfaces.RealInputPelecPRE (from ZoneCrawlSpace)Electric power injected into the floor
Modelica.Blocks.Interfaces.RealInputPint (from ZoneCrawlSpace)Internal radiative heat gains
BaseClasses.HeatTransfer.Interfaces.HeatPort_aT_ciel (from ZoneCrawlSpace)

Components

TypeNameDefaultDescription
BuildingEnvelope.HeatTransfer.B_Coefficientcoefficient_bVS (from ZoneCrawlSpace)
BoundaryConditions.Radiation.PintRadDistribpintDistribRad (from ZoneCrawlSpace)Distribution proportionally to surfaces of any radiative flux
BuildSysPro.BaseClasses.HeatTransfer.Components.ThermalResistancethermalResistance
BuildSysPro.Building.AirFlow.HeatTransfer.AirRenewalrenouvellementAir
Modelica.Blocks.Sources.ConstantTauxRenouvellementAirAir renewal rate in vol/h