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AS/NZS ISO 9972:2015
[Current]Thermal performance of buildings — Determination of air permeability of buildings — Fan pressurization method
Adopts ISO 9972:2015 to provide measurement of the air permeability of buildings or parts of buildings in the field to validate the designed thermal performance. It specifies the use of mechanical pressurization or depressurization of a building or part of a building. It describes the measurement of the resulting air flow rates over a range of indoor-outdoor static pressure differences. This Standard also provides measurement of the air leakage of building envelopes of single-zone buildings.
Published: 01/09/2015
Pages: 26
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Introduction
1 Scope
2 Normative references
3 Terms, definitions, and symbols
3.1 Terms and definitions
3.2 Symbols
4 Apparatus
4.1 General
4.2 Equipment
4.2.1 Air-moving equipment
4.2.2 Pressure-measuring device
4.2.3 Air flow rate measuring system
4.2.4 Temperature-measuring device
5 Measurement procedure
5.1 Measurement conditions
5.1.1 General
5.1.2 Measured extent
5.1.3 Time of measurement
5.2 Preparation
5.2.1 Building preparation methods
5.2.2 Heating, ventilation and air conditioning systems and other building equipment
5.2.3 Intentional openings in the envelope
5.2.4 Openings inside the measured extent
5.2.5 Air-moving equipment
5.2.6 Pressure measuring devices
5.3 Steps of the procedure
5.3.1 Preliminary check
5.3.2 Temperature and wind conditions
5.3.3 Zero-flow pressure difference
5.3.4 Pressure difference sequence
6 Expression of results
6.1 Reference values
6.1.1 Internal volume
6.1.2 Envelope area
6.1.3 Net floor area
6.2 Calculation of the air leakage rate
6.3 Derived quantities
6.3.1 General
6.3.2 Air change rate at reference pressure difference
6.3.3 Specific leakage rate (envelope)
6.3.4 Specific leakage rate (floor)
6.3.5 Effective leakage area
6.3.6 Specific effective leakage area (envelope)
6.3.7 Specific effective leakage area (floor)
7 Test report
8 Uncertainty
8.1 General
8.2 Reference value
8.3 Overall uncertainty
Annex A
A.1 General
A.2 Fan and duct system
A.3 Blower door
A.4 Building heating or ventilation and air conditioning system fans
Annex B
Annex C
Annex D
Annex E
Cited references in this standard
[Current]
Thermal performance of buildings and building components — Physical quantities and definitions
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