modelInfiltrationRate_DIN12831

Heat flow caused by infiltration after european standard DIN EN 12831

Extends from Modelica.Thermal.HeatTransfer.Interfaces.Element1D (Partial heat transfer element with two HeatPort connectors that does not store energy).

Information

Overview

The InfiltrationRate model describes heat and mass transport by infiltration.

Concept

Air exchange coefficients at 50 Pa pressure difference between ambience and room air:

Reference values for air shielding value e:

Reference
	heated room without facade with openings exposed to wind	heated room with one facade with openings exposed to wind	heated room with more than one facade with openings exposed to wind
no shielding	0	0.03	0.05
moderate shielding	0	0.02	0.03
well shielded	0	0.01	0.02

Reference values for height correction value ε:

References

DIN EN 12831

Example Results

AixLib.Building.Components.Examples.DryAir.DryAir_test

Mai 19, 2014 by Ana Constantin:
Uses components from MSL and respects the naming conventions
May 02, 2013 by Ole Odendahl:
Formatted documentation appropriately
August 2, 2011 by Ana Constantin:
Implemented after a model from Time Haase.

Type	Name	Default	Description
Modelica.Units.SI.Volume	room_V	50	Volume of the room
Real	n50	4	Air exchange rate at 50 Pa pressure difference
Real	e	0.03	Coefficient of windshield
Real	eps	1.0	Coefficient of height
Modelica.Units.SI.SpecificHeatCapacity	c	1000	Specific heat capacity of air
Modelica.Units.SI.Density	rho	1.25	Air density

Type	Name	Default	Description
HeatPort_a	port_a (from Element1D)
HeatPort_b	port_b (from Element1D)

Type	Name	Default	Description
SI.HeatFlowRate	Q_flow (from Element1D)		Heat flow rate from port_a -> port_b
SI.TemperatureDifference	dT (from Element1D)		port_a.T - port_b.T