This document gives guidelines to correct the measured air flow rate when measuring conditions are different from standard conditions.
It applies to a power-law formula giving the air flow rate as a function of a pressure difference with an air flow rate coefficient, C, varying with temperature and pressure.
This document applies to:
- passive elements of air distribution systems with a cross-section area that does not depend on pressure;
- volume flow rate (and not mass flow rate).
This document is applicable to (but not limited to):
- EN 1507, Ventilation for buildings - Sheet metal air ducts with rectangular section - Requirements for strength and leakage;
- EN 1751, Ventilation for buildings - Air terminal devices - Aerodynamic testing of damper and valves;
- EN 12237, Ventilation for buildings - Ductwork - Strength and leakage of circular sheet metal ducts;
- EN 13141 1, Ventilation for buildings - Performance testing of components/products for residential ventilation - Part 1: Externally and internally mounted air transfer devices;
- EN 13141 2, Ventilation for buildings - Performance testing of components/products for residential ventilation - Part 2: Exhaust and supply air terminal devices;
- EN 13141 9, Ventilation for buildings - Performance testing of components/products for residential ventilation - Part 9: externally mounted humidity controlled air transfer device;
- EN 13141 10, Ventilation for buildings - Performance testing of components/products for residential ventilation - Part 10: humidity controlled extract air terminal device;
- EN 15727, Ventilation for buildings - Ducts and ductwork components, leakage classification and testing.
This document does not apply to:
- fans;
- air terminal devices with automatically controlled openings (variable openings).
Registration number (WIID)
64528
Scope
This document gives guidelines to correct the measured air flow rate when measuring conditions are different from standard conditions.
It applies to a power-law formula giving the air flow rate as a function of a pressure difference with an air flow rate coefficient, C, varying with temperature and pressure.
This document applies to:
- passive elements of air distribution systems with a cross-section area that does not depend on pressure;
- volume flow rate (and not mass flow rate).
This document is applicable to (but not limited to):
- EN 1507, Ventilation for buildings - Sheet metal air ducts with rectangular section - Requirements for strength and leakage;
- EN 1751, Ventilation for buildings - Air terminal devices - Aerodynamic testing of damper and valves;
- EN 12237, Ventilation for buildings - Ductwork - Strength and leakage of circular sheet metal ducts;
- EN 13141 1, Ventilation for buildings - Performance testing of components/products for residential ventilation - Part 1: Externally and internally mounted air transfer devices;
- EN 13141 2, Ventilation for buildings - Performance testing of components/products for residential ventilation - Part 2: Exhaust and supply air terminal devices;
- EN 13141 9, Ventilation for buildings - Performance testing of components/products for residential ventilation - Part 9: externally mounted humidity controlled air transfer device;
- EN 13141 10, Ventilation for buildings - Performance testing of components/products for residential ventilation - Part 10: humidity controlled extract air terminal device;
- EN 15727, Ventilation for buildings - Ducts and ductwork components, leakage classification and testing.
This document does not apply to:
- fans;
- air terminal devices with automatically controlled openings (variable openings).
