Buildings.Examples.VAVReheat.Validation.BaseClasses

This package contains base classes for Validation examples

Information

This package contains base classes that are used to construct the models in Buildings.Examples.VAVReheat.Validation.

Extends from Modelica.Icons.BasesPackage (Icon for packages containing base classes).

Package Content

Name	Description
Floor	Extends Buildings.Examples.VAVReheat.BaseClasses.Floor with CO2 generation from people and CO2 from outside air.

Buildings.Examples.VAVReheat.Validation.BaseClasses.Floor

Extends Buildings.Examples.VAVReheat.BaseClasses.Floor with CO2 generation from people and CO2 from outside air.

Buildings.Examples.VAVReheat.Validation.BaseClasses.Floor

Information

This model is used in the model Buildings.Examples.VAVReheat.Validation.TraceSubstance. It extends Buildings.Examples.VAVReheat.BaseClasses.Floor with CO₂ generation from people and CO₂ from outside air infiltration. Calculation of the generation from people uses the internal gain schedule and uses 0.05 people per m² along with the zone area to calculate the number of people. Then, it assumes CO₂ generation is 0.0048 l/s per person (Table 5, Persily and De Jonge 2017) and density of CO₂ to be 1.8 kg/m³, making CO₂ generation equal to 8.64e-6 kg/s per person. Outside air CO₂ concentration is assumed 400 ppm.

References

Persily, A. and De Jonge, L. (2017). Carbon dioxide generation rates for building occupants. Indoor Air, 27, 868–879. https://doi.org/10.1111/ina.12383.

Extends from Buildings.Examples.VAVReheat.BaseClasses.Floor (Model of a floor of the building).

Parameters

Type	Name	Default	Description
replaceable package Medium		PartialMedium	Medium model for air
Boolean	use_windPressure	true	Set to true to enable wind pressure
Real	kIntNor	1	Gain factor to scale internal heat gain in north zone
Area	AFloCor	2698/hRoo	Floor area corridor [m2]
Area	AFloSou	568.77/hRoo	Floor area south [m2]
Area	AFloNor	568.77/hRoo	Floor area north [m2]
Area	AFloEas	360.0785/hRoo	Floor area east [m2]
Area	AFloWes	360.0785/hRoo	Floor area west [m2]
Length	wExtSou	49.91	South zone exterior wall width [m]
Length	wExtNor	49.91	North zone exterior wall width [m]
Length	wExtEas	33.27	East zone exterior wall width [m]
Length	wExtWes	33.27	West zone exterior wall width [m]
InteriorConvection	intConMod	Buildings.HeatTransfer.Types...	Convective heat transfer model for room-facing surfaces of opaque constructions
Real	winWalRat	0.33	Window to wall ratio for exterior walls
Length	hWin	1.5	Height of windows [m]
Plywood	matFur		Material for furniture
Carpet	matCar		Carpet
Concrete	matCon		Concrete
Plywood	matWoo		Wood for exterior construction
Generic	matIns		Steelframe construction with insulation
GypsumBoard	matGyp		Gypsum board
GypsumBoard	matGyp2		Gypsum board
Generic	conExtWal		Exterior construction
Generic	conIntWal		Interior wall construction
Generic	conFlo		Floor construction (opa_a is carpet)
Generic	conFur		Construction for internal mass of furniture
Plywood	matCarTra		Wood for floor
DoubleClearAir13Clear	glaSys		Data record for the glazing system
Experimental (may be changed in future releases)
Boolean	sampleModel	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

Connectors

Type	Name	Description
VesselFluidPorts_b	portsSou[2]	Fluid inlets and outlets
VesselFluidPorts_b	portsEas[2]	Fluid inlets and outlets
VesselFluidPorts_b	portsNor[2]	Fluid inlets and outlets
VesselFluidPorts_b	portsWes[2]	Fluid inlets and outlets
VesselFluidPorts_b	portsCor[2]	Fluid inlets and outlets
output RealOutput	TRooAir[5]	Room air temperatures [K]
output RealOutput	p_rel	Relative pressure signal of building static pressure
Bus	weaBus	Weather bus

Modelica definition

model Floor "Extends Buildings.Examples.VAVReheat.BaseClasses.Floor with CO2 generation from people and CO2 from outside air." extends Buildings.Examples.VAVReheat.BaseClasses.Floor( nor(use_C_flow=true, C_start=fill(400e-6*Modelica.Media.IdealGases.Common.SingleGasesData.CO2.MM /Modelica.Media.IdealGases.Common.SingleGasesData.Air.MM, Medium.nC)), eas(use_C_flow=true, C_start=fill(400e-6*Modelica.Media.IdealGases.Common.SingleGasesData.CO2.MM /Modelica.Media.IdealGases.Common.SingleGasesData.Air.MM, Medium.nC)), cor(use_C_flow=true, C_start=fill(400e-6*Modelica.Media.IdealGases.Common.SingleGasesData.CO2.MM /Modelica.Media.IdealGases.Common.SingleGasesData.Air.MM, Medium.nC)), wes(use_C_flow=true, C_start=fill(400e-6*Modelica.Media.IdealGases.Common.SingleGasesData.CO2.MM /Modelica.Media.IdealGases.Common.SingleGasesData.Air.MM, Medium.nC)), sou(use_C_flow=true, C_start=fill(400e-6*Modelica.Media.IdealGases.Common.SingleGasesData.CO2.MM /Modelica.Media.IdealGases.Common.SingleGasesData.Air.MM, Medium.nC)), leaSou(amb(C=fill(400e-6*Modelica.Media.IdealGases.Common.SingleGasesData.CO2.MM /Modelica.Media.IdealGases.Common.SingleGasesData.Air.MM, Medium.nC))), leaEas(amb(C=fill(400e-6*Modelica.Media.IdealGases.Common.SingleGasesData.CO2.MM /Modelica.Media.IdealGases.Common.SingleGasesData.Air.MM, Medium.nC))), leaNor(amb(C=fill(400e-6*Modelica.Media.IdealGases.Common.SingleGasesData.CO2.MM /Modelica.Media.IdealGases.Common.SingleGasesData.Air.MM, Medium.nC))), leaWes(amb(C=fill(400e-6*Modelica.Media.IdealGases.Common.SingleGasesData.CO2.MM /Modelica.Media.IdealGases.Common.SingleGasesData.Air.MM, Medium.nC)))); Modelica.Blocks.Sources.RealExpression CO2GenWes(y=intGaiFra.y[1]*AFloWes*0.05 *8.64e-6) "CO2 generated by people in the west zone"; Modelica.Blocks.Sources.RealExpression CO2GenCor(y=intGaiFra.y[1]*AFloCor*0.05 *8.64e-6) "CO2 generated by people in the corridor zone"; Modelica.Blocks.Sources.RealExpression CO2GenEas(y=intGaiFra.y[1]*AFloEas*0.05 *8.64e-6) "CO2 generated by people in the east zone"; Modelica.Blocks.Sources.RealExpression CO2GenNor(y=intGaiFra.y[1]*AFloNor*0.05 *8.64e-6) "CO2 generated by people in the north zone"; Modelica.Blocks.Sources.RealExpression CO2GenSou(y=intGaiFra.y[1]*AFloSou*0.05 *8.64e-6) "CO2 generated by people in the south zone"; equation connect(CO2GenNor.y, nor.C_flow[1]); connect(CO2GenWes.y, wes.C_flow[1]); connect(CO2GenCor.y, cor.C_flow[1]); connect(CO2GenSou.y, sou.C_flow[1]); connect(CO2GenEas.y, eas.C_flow[1]); end Floor;