ISO 12569:2017 establishes methods to obtain the ventilation rate or specific airflow rate in a building space (which is considered to be a single zone) using a tracer gas. The measurement methods apply for spaces where the combined conditions concerning the uniformity of tracer gas concentration, measurement of the exhaust gas concentration, effective mixed zone and/or fluctuation of ventilation are satisfied. ISO 12569:2017 provides three measurement methods using a tracer gas: concentration decay method, continuous dose method, and constant concentration method. NOTE Specific measurement conditions are given in Table 1.
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Sisällysluettelo
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Measurement method and its selection
4.1 General
4.2 Concentration decay method
4.3 Continuous dose method
4.4 Constant concentration method
4.5 Type of tracer gas
4.6 Measurement apparatus
5 Procedure
5.1 Building preparations
5.2 Ancillary measurements
5.3 Concentration decay method
5.4 Continuous dose methods
5.5 Constant concentration method
6 Accuracy
6.1 General
6.2 Tracer gas dose procedure and room concentration distribution
6.3 Tracer gas sampling and storage method
6.4 Tracer gas concentration measuring instruments
6.5 Changes in outside wind and outdoor air temperature and schedule of air conditioning system
7 Test report
7.1 General
7.2 Details necessary to identify the simulation tested
7.3 Details of heating and ventilation systems
7.4 Test conditions and apparatus
7.5 Collected data and results
7.6 Date of the test
Annex A Confidence intervals (normative)
Annex B Method to estimate ventilation rate Qv and effective mixed zone volume Vemz simultaneously[3][4] (normative)
Annex C Considerations when measuring the ventilation rate of large spaces (informative)
Annex D Effects of internal and external temperature difference, temperature change, and outdoor air concentration change during the measurement period (informative)
Annex E Estimation error minimizing method in two-point and multi-point decay methods (informative)
Annex F Propagation of error analysis (informative)
6.2 Tracer gas dose procedure and room concentration distribution
6.3 Tracer gas sampling and storage method
6.4 Tracer gas concentration measuring instruments
6.5 Changes in outside wind and outdoor air temperature and schedule of air conditioning system
7 Test report
7.1 General
7.2 Details necessary to identify the simulation tested
7.3 Details of heating and ventilation systems
7.4 Test conditions and apparatus
7.5 Collected data and results
7.6 Date of the test
Annex A Confidence intervals (normative)
Annex B Method to estimate ventilation rate Qv and effective mixed zone volume Vemz simultaneously[3][4] (normative)
Annex C Considerations when measuring the ventilation rate of large spaces (informative)
Annex D Effects of internal and external temperature difference, temperature change, and outdoor air concentration change during the measurement period (informative)
Annex E Estimation error minimizing method in two-point and multi-point decay methods (informative)
Annex F Propagation of error analysis (informative)