modelSingleZoneFloor

Model of a building floor as a single zone

Information

This model assumes a mid-floor of a building as a single zone with a homogeneous temperature; i.e., the air in the whole floor is assumed to be fully mixed.

The geometry, materials and constructions of the model are consistent with those of Buildings.Examples.VAVReheat.BaseClasses.Floor, which models the same mid-floor as five zones: a core zone and four perimeter zones.

The internal partition walls in the five-zone floor model are considered as thermal mass in this single-zone floor model. The doors in the five-zone floor model have been removed in the single-zone floor model.

Parameters

Type	Name	Default	Description
Modelica.Units.SI.Volume	VRoo	4555.7	Room volum
Modelica.Units.SI.Height	hRoo	2.74	Room height
Modelica.Units.SI.Length	hWin	1.5	Height of windows
Real	winWalRat	0.33	Window to wall ratio for exterior walls
Buildings.HeatTransfer.Data.Solids.Plywood	matWoo		Wood for exterior construction
Buildings.HeatTransfer.Data.Solids.Concrete	matCon		Concrete
Buildings.HeatTransfer.Data.Solids.Generic	matIns		Steelframe construction with insulation
Buildings.HeatTransfer.Data.Solids.GypsumBoard	matGyp		Gypsum board
Buildings.HeatTransfer.Data.Solids.GypsumBoard	matGyp2		Gypsum board
Buildings.HeatTransfer.Data.Solids.Plywood	matFur		Material for furniture
Buildings.HeatTransfer.Data.Resistances.Carpet	matCar		Carpet
Buildings.HeatTransfer.Data.GlazingSystems.DoubleClearAir13Clear	glaSys		Data record for the glazing system
Buildings.HeatTransfer.Data.OpaqueConstructions.Generic	conExtWal		Exterior construction
Buildings.HeatTransfer.Data.OpaqueConstructions.Generic	conIntWal		Interior wall construction
Buildings.HeatTransfer.Data.OpaqueConstructions.Generic	conFlo		Floor construction (opa_a is carpet)
Buildings.HeatTransfer.Data.OpaqueConstructions.Generic	conFur		Construction for internal mass of furniture
Boolean	use_windPressure	true	Set to true to enable wind pressure

Connectors

Type	Name	Description
Modelica.Fluid.Vessels.BaseClasses.VesselFluidPorts_b[2]	ports	Fluid inlets and outlets
Modelica.Blocks.Interfaces.RealOutput	TRooAir	Room air temperature
Modelica.Blocks.Interfaces.RealOutput	p_rel	Relative pressure signal of building static pressure
Buildings.BoundaryConditions.WeatherData.Bus	weaBus	Weather data bus

Components

Type	Name	Description
Buildings.ThermalZones.Detailed.MixedAir	flo	Floor
Modelica.Thermal.HeatTransfer.Sensors.TemperatureSensor	temAir	Air temperature sensor
Buildings.Fluid.Sensors.RelativePressure	senRelPre	Building pressure measurement
Buildings.Fluid.Sources.Outside	out	Outdoor air
Buildings.Examples.VAVReheat.BaseClasses.RoomLeakage	leaSou	Model for air infiltration through the envelope
Buildings.Examples.VAVReheat.BaseClasses.RoomLeakage	leaEas	Model for air infiltration through the envelope
Buildings.Examples.VAVReheat.BaseClasses.RoomLeakage	leaNor	Model for air infiltration through the envelope
Buildings.Examples.VAVReheat.BaseClasses.RoomLeakage	leaWes	Model for air infiltration through the envelope
Modelica.Blocks.Sources.CombiTimeTable	intGaiFra	Fraction of internal heat gain
Modelica.Blocks.Math.MatrixGain	gai	Matrix gain to split up heat gain in radiant, convective and latent gain
Modelica.Blocks.Sources.Constant	uSha	Control signal for the shading device
Modelica.Blocks.Routing.Replicator	replicator	Shading signals for all windows

Name	Description
Medium	Medium model for air

Revisions

August 3, 2026, by Michael Wetter:
Removed duplicate annotation. This is for IBPSA, issue 2158.
September 16, 2021, by Michael Wetter:
Removed parameter lat as this is now obtained from the weather data reader.
This is for IBPSA, #1477.
March 10, 2020, by Kun Zhang:
First implementation. This is for issue 1717.