modelOw2IwL2IwS1Gr1Uf1

2 outer walls, 2 inner walls load, 1 inner wall simple, 1 floor towards ground, 1 ceiling towards upper floor

Extends from AixLib.ThermalZones.HighOrder.Rooms.BaseClasses.PartialRoom (Partial model with base component that are necessary for all HOM rooms).

Information

Overview

Model for a room with 2 outer walls, 2 inner walls load towards two different rooms but with the same orientation, 1 inner wall simple, 1 floor towards ground, 1 ceiling towards upper floor.

Concept

The following figure presents the room's layout:

Room layout

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

Type	Name	Default	Description
AixLib.DataBase.Walls.Collections.BaseDataMultiWalls	wallTypes (from PartialRoomParams)
Air volume of room
Modelica.Units.SI.Density	denAir (from PartialRoomParams)	1.19	Density of air
Modelica.Units.SI.SpecificHeatCapacity	cAir (from PartialRoomParams)	1007	Specific heat capacity of air
Modelica.Units.SI.Volume	room_V (from PartialRoom)
Dynamics
Modelica.Fluid.Types.Dynamics	energyDynamicsWalls (from PartialRoomParams)	Modelica.Fluid.Types.Dynamics.DynamicFreeInitial	Type of energy balance for wall capacities: dynamic (3 initialization options) or steady state
Real	mSenFac (from LumpedVolumeDeclarations)	1	Factor for scaling the sensible thermal mass of the volume
Initialization › Air volume of room
Modelica.Units.SI.Temperature	T0_air (from PartialRoomParams)	295.11	Air
Initialization › Walls
Modelica.Units.SI.Temperature	TWalls_start (from PartialRoomParams)	Modelica.Units.Conversions.from_degC(16)	Initial temperature of all walls
Inner walls › Heat convection
AixLib.ThermalZones.HighOrder.Components.Types.CalcMethodConvectiveHeatTransferInsideSurface	calcMethodIn (from PartialRoomParams)	AixLib.ThermalZones.HighOrder.Components.Types.CalcMethodConvectiveHeatTransferInsideSurface.EN_ISO_6946_Appendix_A	Calculation method of convective heat transfer coefficient at inside surface
Modelica.Units.SI.CoefficientOfHeatTransfer	hConIn_const (from PartialRoomParams)	2.5	Custom convective heat transfer coefficient (just for manual selection, not recommended)
Inner walls › Longwave radiation
AixLib.ThermalZones.HighOrder.Components.Types.CalcMethodRadiativeHeatTransfer	radLongCalcMethod (from PartialRoomParams)	AixLib.ThermalZones.HighOrder.Components.Types.CalcMethodRadiativeHeatTransfer.No_approx	Calculation method for longwave radiation heat transfer
Modelica.Units.SI.Temperature	T_ref (from PartialRoomParams)	Modelica.Units.Conversions.from_degC(16)	Reference temperature for optional linearization of longwave radiation
Outer walls › Windows
DataBase.WindowsDoors.Simple.OWBaseDataDefinition_Simple	Type_Win (from PartialRoomParams)		Window parametrization
Outer walls › Solar absorptance
Real	solar_absorptance_OW (from PartialRoomParams)	0.6	Solar absoptance outer walls
Outer walls › Heat convection
AixLib.ThermalZones.HighOrder.Components.Types.CalcMethodConvectiveHeatTransfer	calcMethodOut (from PartialRoomParams)	AixLib.ThermalZones.HighOrder.Components.Types.CalcMethodConvectiveHeatTransfer.DIN_6946	Calculation method for convective heat transfer coefficient
DataBase.Surfaces.RoughnessForHT.PolynomialCoefficients_ASHRAEHandbook	surfaceType (from PartialRoomParams)	DataBase.Surfaces.RoughnessForHT.Brick_RoughPlaster()	Surface type of outside wall
Modelica.Units.SI.CoefficientOfHeatTransfer	hConOut_const (from PartialRoomParams)	25	Custom convective heat transfer coefficient (just for manual selection, not recommended)
Outer walls › Sunblind
Boolean	use_sunblind (from PartialRoomParams)	false	Will sunblind become active automatically?
Real	ratioSunblind (from PartialRoomParams)	0.8	Sunblind factor. 1 means total blocking of irradiation, 0 no sunblind
Modelica.Units.SI.Irradiance	solIrrThreshold (from PartialRoomParams)	350	Threshold for global solar irradiation on this surface to enable sunblinding (see also TOutAirLimit)
Modelica.Units.SI.Temperature	TOutAirLimit (from PartialRoomParams)	293.15	Temperature at which sunblind closes (see also solIrrThreshold)
Infiltration acc. to EN 12831 (airtightness)
Boolean	use_infiltEN12831 (from PartialRoomParams)	false	Use model to exchange room air with outdoor air acc. to standard
Real	n50 (from PartialRoomParams)	4	Air exchange rate at 50 Pa pressure difference
Real	e (from PartialRoomParams)	0.03	Coefficient of windshield
Real	eps (from PartialRoomParams)	1.0	Coefficient of height
Dynamic ventilation
Boolean	withDynamicVentilation (from PartialRoomParams)	false	Dynamic ventilation
Modelica.Units.SI.Temperature	HeatingLimit (from PartialRoomParams)	288.15	Outside temperature at which the heating activates
Real	Max_VR (from PartialRoomParams)	10	Maximal ventilation rate
Modelica.Units.SI.TemperatureDifference	Diff_toTempset (from PartialRoomParams)	2	Difference to set temperature
Modelica.Units.SI.Temperature	Tset (from PartialRoomParams)	295.15	Tset
Dynamics › Conservation equations
Modelica.Fluid.Types.Dynamics	energyDynamics (from LumpedVolumeDeclarations)	Modelica.Fluid.Types.Dynamics.DynamicFreeInitial	Type of energy balance: dynamic (3 initialization options) or steady state
Modelica.Fluid.Types.Dynamics	substanceDynamics (from LumpedVolumeDeclarations)	energyDynamics	Type of independent mass fraction balance: dynamic (3 initialization options) or steady state
Modelica.Fluid.Types.Dynamics	traceDynamics (from LumpedVolumeDeclarations)	energyDynamics	Type of trace substance balance: dynamic (3 initialization options) or steady state
Advanced › Dynamics
Modelica.Fluid.Types.Dynamics	massDynamics (from LumpedVolumeDeclarations)	energyDynamics	Type of mass balance: dynamic (3 initialization options) or steady state, must be steady state if energyDynamics is steady state
Initialization
Medium.AbsolutePressure	p_start (from LumpedVolumeDeclarations)	Medium.p_default	Start value of pressure
Medium.Temperature	T_start (from LumpedVolumeDeclarations)	Medium.T_default	Start value of temperature
Medium.MassFraction[Medium.nX]	X_start (from LumpedVolumeDeclarations)	Medium.X_default	Start value of mass fractions m_i/m
Medium.ExtraProperty[Medium.nC]	C_start (from LumpedVolumeDeclarations)	fill(0, Medium.nC)	Start value of trace substances
Medium.ExtraProperty[Medium.nC]	C_nominal (from LumpedVolumeDeclarations)	fill(1E-2, Medium.nC)	Nominal value of trace substances. (Set to typical order of magnitude.)
General › Ports
Integer	nPorts (from PartialRoom)	0	Number of fluid ports
Trace Substances
Boolean	use_C_flow (from PartialRoom)	false	Set to true to enable trace substances in the rooms air
Boolean	use_C_flow_input (from PartialRoom)	true	Set to true to use an input connector for the trace substances. False indicates internal calculation
Moist Air
Boolean	use_moisture_balance (from PartialRoom)	false	Set to true to enable moisture gain balance in the rooms air
Dimensions
Modelica.Units.SI.Length	room_length	2	length
Modelica.Units.SI.Length	room_lengthb	1	length_b
Modelica.Units.SI.Length	room_width	2	width
Modelica.Units.SI.Height	room_height	2	height
Windows and Doors
Boolean	withWindow1	true	Window 1
Modelica.Units.SI.Area	windowarea_OW1	0	Window area
Boolean	withWindow2	true	Window 2
Modelica.Units.SI.Area	windowarea_OW2	0	Window area
Boolean	withDoor1	true	Door 1
Modelica.Units.SI.Length	door_width_OD1	0	width
Modelica.Units.SI.Length	door_height_OD1	0	height
Boolean	withDoor2	true	Door 2
Modelica.Units.SI.Length	door_width_OD2	0	width
Modelica.Units.SI.Length	door_height_OD2	0	height
Real	U_door_OD1	2.5	U-value
Real	eps_door_OD1	0.95	eps
Real	U_door_OD2	2.5	U-value
Real	eps_door_OD2	0.95	eps

Connectors

Type	Name	Description
Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a	thermRoom (from PartialRoom)
Utilities.Interfaces.RadPort	starRoom (from PartialRoom)
Modelica.Blocks.Interfaces.RealInput	AirExchangePort (from PartialRoom)
Modelica.Fluid.Vessels.BaseClasses.VesselFluidPorts_b[nPorts]	ports (from PartialRoom)	Auxiliary fluid inlets and outlets to indoor air volume
Modelica.Blocks.Interfaces.RealInput[Medium.nC]	C_flow (from PartialRoom)	Trace substance mass flow rate added to the medium
Modelica.Blocks.Interfaces.RealInput	ventHum (from PartialRoom)	absolute humidity of ventilation air
Modelica.Blocks.Interfaces.RealInput	QLat_flow (from PartialRoom)	Latent heat gains for the room
Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a	thermOutside (from PartialRoom)
Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a	thermInsideWall2
Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a	thermInsideWall1a
Modelica.Blocks.Interfaces.RealInput	WindSpeedPort
Utilities.Interfaces.SolarRad_in	SolarRadiationPort_OW1
Utilities.Interfaces.SolarRad_in	SolarRadiationPort_OW2
Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a	thermCeiling
Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a	thermInsideWall1b
Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a	ground

Components

Type	Name	Description
Components.DryAir.InfiltrationRate_DIN12831	infiltrationRate (from PartialRoom)
Utilities.Interfaces.Adaptors.ConvRadToCombPort	thermStar_Demux (from PartialRoom)
Components.MoistAir.VarMoistAirExchange	NaturalVentilation (from PartialRoom)
Components.DryAir.DynamicVentilation	dynamicVentilation (from PartialRoom)
Modelica.Thermal.HeatTransfer.Sensors.TemperatureSensor	Tair (from PartialRoom)
Fluid.MixingVolumes.MixingVolumeMoistAir	airload (from PartialRoom)	Indoor air volume
AixLib.ThermalZones.HighOrder.Components.Walls.Wall	outside_wall1
AixLib.ThermalZones.HighOrder.Components.Walls.Wall	outside_wall2
AixLib.ThermalZones.HighOrder.Components.Walls.Wall	inside_wall1a
AixLib.ThermalZones.HighOrder.Components.Walls.Wall	inside_wall2
AixLib.ThermalZones.HighOrder.Components.Walls.Wall	Ceiling
AixLib.ThermalZones.HighOrder.Components.Walls.Wall	floor
AixLib.ThermalZones.HighOrder.Components.Walls.Wall	inside_wall1b

Revisions

April 23, 2020 by Philipp Mehrfeld:
#752: Propagate all parameters correctly. Extend from new partial room model. Delete TIR and TMC. Tidy up.
Mai 7, 2015 by Ana Constantin:
Grount temperature depends on TRY
April 18, 2014 by Ana Constantin:
Added documentation
July 7, 2011 by Ana Constantin:
Implemented