modelGroundFloorBuildingEnvelope

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Extends from AixLib.ThermalZones.HighOrder.Rooms.BaseClasses.PartialRoomParams (Partial model with base parameters that are necessary for all HOM rooms and for building propagation).

Information

Overview

Model for the envelope of the ground floor.

Ground temperature

The ground temperature can be coupled to any desired prescriped temperature. Anyway, suitable ground temperatures depending on locations in Germany are listed as Θ'_m,e in the comprehensive table 1 in "Beiblatt 1" in the norm DIN EN 12831.

Or a ground temperature can be chosen according to a TRY region, which is listed below: if ...

TRY_Region == 1 then 282.15 K

TRY_Region == 2 then 281.55 K

TRY_Region == 3 then 281.65 K

TRY_Region == 4 then 282.65 K

TRY_Region == 5 then 281.25 K

TRY_Region == 6 then 279.95 K

TRY_Region == 7 then 281.95 K

TRY_Region == 8 then 279.95 K

TRY_Region == 9 then 281.05 K

TRY_Region == 10 then 276.15 K

TRY_Region == 11 then 279.45 K

TRY_Region == 12 then 283.35 K

TRY_Region == 13 then 281.05 K

TRY_Region == 14 then 281.05 K

TRY_Region == 15 then 279.95 K

Parameters

TypeNameDefaultDescription
AixLib.DataBase.Walls.Collections.BaseDataMultiWallswallTypes (from PartialRoomParams)
Air volume of room
Modelica.Units.SI.DensitydenAir (from PartialRoomParams)1.19Density of air
Modelica.Units.SI.SpecificHeatCapacitycAir (from PartialRoomParams)1007Specific heat capacity of air
Dynamics
Modelica.Fluid.Types.DynamicsenergyDynamicsWalls (from PartialRoomParams)Modelica.Fluid.Types.Dynamics.DynamicFreeInitialType of energy balance for wall capacities: dynamic (3 initialization options) or steady state
Initialization › Air volume of room
Modelica.Units.SI.TemperatureT0_air (from PartialRoomParams)295.11Air
Initialization › Walls
Modelica.Units.SI.TemperatureTWalls_start (from PartialRoomParams)Modelica.Units.Conversions.from_degC(16)Initial temperature of all walls
Inner walls › Heat convection
AixLib.ThermalZones.HighOrder.Components.Types.CalcMethodConvectiveHeatTransferInsideSurfacecalcMethodIn (from PartialRoomParams)AixLib.ThermalZones.HighOrder.Components.Types.CalcMethodConvectiveHeatTransferInsideSurface.EN_ISO_6946_Appendix_ACalculation method of convective heat transfer coefficient at inside surface
Modelica.Units.SI.CoefficientOfHeatTransferhConIn_const (from PartialRoomParams)2.5Custom convective heat transfer coefficient (just for manual selection, not recommended)
Inner walls › Longwave radiation
AixLib.ThermalZones.HighOrder.Components.Types.CalcMethodRadiativeHeatTransferradLongCalcMethod (from PartialRoomParams)AixLib.ThermalZones.HighOrder.Components.Types.CalcMethodRadiativeHeatTransfer.No_approxCalculation method for longwave radiation heat transfer
Modelica.Units.SI.TemperatureT_ref (from PartialRoomParams)Modelica.Units.Conversions.from_degC(16)Reference temperature for optional linearization of longwave radiation
Outer walls › Windows
DataBase.WindowsDoors.Simple.OWBaseDataDefinition_SimpleType_Win (from PartialRoomParams)Window parametrization
Outer walls › Solar absorptance
Realsolar_absorptance_OW (from PartialRoomParams)0.6Solar absoptance outer walls
Outer walls › Heat convection
AixLib.ThermalZones.HighOrder.Components.Types.CalcMethodConvectiveHeatTransfercalcMethodOut (from PartialRoomParams)AixLib.ThermalZones.HighOrder.Components.Types.CalcMethodConvectiveHeatTransfer.DIN_6946Calculation method for convective heat transfer coefficient
DataBase.Surfaces.RoughnessForHT.PolynomialCoefficients_ASHRAEHandbooksurfaceType (from PartialRoomParams)DataBase.Surfaces.RoughnessForHT.Brick_RoughPlaster()Surface type of outside wall
Modelica.Units.SI.CoefficientOfHeatTransferhConOut_const (from PartialRoomParams)25Custom convective heat transfer coefficient (just for manual selection, not recommended)
Outer walls › Sunblind
Booleanuse_sunblind (from PartialRoomParams)falseWill sunblind become active automatically?
RealratioSunblind (from PartialRoomParams)0.8Sunblind factor. 1 means total blocking of irradiation, 0 no sunblind
Modelica.Units.SI.IrradiancesolIrrThreshold (from PartialRoomParams)350Threshold for global solar irradiation on this surface to enable sunblinding (see also TOutAirLimit)
Modelica.Units.SI.TemperatureTOutAirLimit (from PartialRoomParams)293.15Temperature at which sunblind closes (see also solIrrThreshold)
Infiltration acc. to EN 12831 (airtightness)
Booleanuse_infiltEN12831 (from PartialRoomParams)falseUse model to exchange room air with outdoor air acc. to standard
Realn50 (from PartialRoomParams)4Air exchange rate at 50 Pa pressure difference
Reale (from PartialRoomParams)0.03Coefficient of windshield
Realeps (from PartialRoomParams)1.0Coefficient of height
Dynamic ventilation
BooleanwithDynamicVentilation (from PartialRoomParams)falseDynamic ventilation
Modelica.Units.SI.TemperatureHeatingLimit (from PartialRoomParams)288.15Outside temperature at which the heating activates
RealMax_VR (from PartialRoomParams)10Maximal ventilation rate
Modelica.Units.SI.TemperatureDifferenceDiff_toTempset (from PartialRoomParams)2Difference to set temperature
Modelica.Units.SI.TemperatureTset (from PartialRoomParams)295.15Tset
Modelica.Units.SI.TemperatureTset_Livingroom295.15Tset_livingroom
Modelica.Units.SI.TemperatureTset_Hobby295.15Tset_hobby
Modelica.Units.SI.TemperatureTset_Corridor291.15Tset_corridor
Modelica.Units.SI.TemperatureTset_WC291.15Tset_WC
Modelica.Units.SI.TemperatureTset_Kitchen295.15Tset_kitchen
Dynamics › Equations
Modelica.Fluid.Types.DynamicsenergyDynamicsModelica.Fluid.Types.Dynamics.DynamicFreeInitialType of energy balance: dynamic (3 initialization options) or steady state
Dimensions
Modelica.Units.SI.Lengthroom_width3.92width
Modelica.Units.SI.Heightroom_height2.60height
Modelica.Units.SI.Lengthlength13.3l1
Modelica.Units.SI.Lengthlength22.44l2
Modelica.Units.SI.Lengthlength31.33l3
Modelica.Units.SI.Lengthlength43.3l4
Modelica.Units.SI.Lengththickness_IWsimple0.145thickness IWsimple
Windows and Doors
Modelica.Units.SI.Areawindowarea_118.44 Area Window11
Modelica.Units.SI.Areawindowarea_121.73 Area Window12
Modelica.Units.SI.Areawindowarea_221.73 Area Window22
Modelica.Units.SI.Areawindowarea_411.4 Area Window41
Modelica.Units.SI.Areawindowarea_513.46 Area Window51
Modelica.Units.SI.Areawindowarea_521.73 Area Window52
Modelica.Units.SI.Lengthdoor_width_311.01Width Door31
Modelica.Units.SI.Lengthdoor_height_312.25Height Door31
Modelica.Units.SI.Lengthdoor_width_421.25Width Door42
Modelica.Units.SI.Lengthdoor_height_422.25Height Door42
Outer walls › Doors
Modelica.Units.SI.CoefficientOfHeatTransferUValOutDoorsU-value (thermal transmittance) of doors in outer walls
Modelica.Units.SI.EmissivityepsOutDoors0.95Emissivity of inside surface of outer doors

Connectors

TypeNameDefaultDescription
Utilities.Interfaces.SolarRad_inNorth
Utilities.Interfaces.SolarRad_inEast
Utilities.Interfaces.SolarRad_inSouth
Utilities.Interfaces.SolarRad_inWest
Modelica.Blocks.Interfaces.RealInputWindSpeedPort
Modelica.Blocks.Interfaces.RealInput[5]AirExchangePort1: LivingRoom_GF, 2: Hobby_GF, 3: Corridor, 4: WC_Storage_GF, 5: Kitchen_GF
Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_athermCeiling_Livingroom
Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_athermCeiling_Hobby
Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_athermCeiling_Corridor
Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_athermCeiling_WCStorage
Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_athermCeiling_Kitchen
Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_athermCorridor
Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a[5]groundTempHeatPort to force a ground temperature for the ground level's floor.
Utilities.Interfaces.ConvRadComb[5]portConvRadRooms1: LivingRoom_GF, 2: Hobby_GF, 3: Corridor, 4: WC_Storage_GF, 5: Kitchen_GF
Modelica.Fluid.Interfaces.FluidPort_a[5]portVent_inInlet for ventilation
Modelica.Fluid.Interfaces.FluidPort_b[5]portVent_outOutlet of Ventilation
Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_athermOutside

Components

TypeNameDefaultDescription
Rooms.OFD.Ow2IwL2IwS1Gr1Uf1Livingroom
Rooms.OFD.Ow2IwL1IwS1Gr1Uf1Hobby
Rooms.OFD.Ow2IwL1IwS1Gr1Uf1WC_Storage
Rooms.OFD.Ow2IwL2IwS1Gr1Uf1Kitchen
Rooms.OFD.Ow1IwL2IwS1Gr1Uf1Corridor
Utilities.Interfaces.Adaptors.ConvRadToCombPort[5]heatStarToCombHeaters

Contents

NameDescription
Medium

Revisions

  • April 23, 2020 by Philipp Mehrfeld:
    #752: Propagate all parameters correctly (not geometry). Vectorize thermal ports. Delete TIR and TMC.
  • April 18, 2014 by Ana Constantin:
    Added documentation
  • July 10, 2011 by Ana Constantin:
    Implemented