Ventilation model for residential buildings from the DPE method (April 2013 decree) - French regulatory method for building energy performance diagnosis
Hypothesis and equations
In the DPE model, infiltration calculation only takes into account the effect of thermal draft and neglects the effect of wind.
The DPE performs an average calculation with an indoor temperature of 19°C and an average outdoor temperature for the 3 climate zones. This model lets the deltaT vary throughout the simulatio.
QvRenouvAir = QvInfiltration + QvVentilation
QvRenouvAir : total air change (m3/h)
QvInfiltration : air change due to the air permeability of the building (caused by thermal draft, the impact of the wind is being neglected)
QvVentilation : air change due to the ventilation system
QvVentilation = QvarepConv*Shab
QvarepConv : conventional air change per unit of living space (m3/h/m²) (depends on the ventilation system)
Shab : living space area (m²)
Qv4Pa : permeability of the zone at 4 Pa (m3/h)
Qv4Pa = Qv4Pa_env + 0.45 * Smea_conv * Shab
Qv4Pa_env : permeability of building envelope (m3/h)
Smea_conv : conventional value of the sum of air inlet modules at 20 Pa per unit of living area (m3/h/m²)
Qv4Pa_env = I4Pa * Sdep
I4Pa : conventional value of permeability at 4 Pa (m3/h)
Sdep : Total surface of walls with heat losses (floor excluded)
Bibliography
Annex 1 - 3CL-DPE v1.3 method
Instructions for use
Venting systems and infiltration configurations can be selected through drop-down menus.
Extracted airflow, air inlet modules, and I4Pa values can also be changed manually.
Known limits / Use precautions
none
Validations
Validated model - Vincent MAGNAUDEIX 04/2013
--------------------------------------------------------------
Licensed by EDF under a 3-clause BSD-license
Copyright © EDF 2009 - 2023
BuildSysPro version 3.6.0
Author : Vincent MAGNAUDEIX, EDF (2013)
--------------------------------------------------------------