BS ISO 16956:2015
$167.15
Thermal performance in the built environment. Determination of air flow rate in building applications by field measuring methods
| Published By | Publication Date | Number of Pages |
| BSI | 2015 | 34 |
In the cooling and heating loads of a building, the air taken in from outside account for a large portion of the entire load; in order to estimate this load, it is necessary to correctly grasp the air flow rate of ventilation and air-conditioning systems. This International Standard stipulates the methods for measuring the rate of air flow through the ducts in a steadily operating ventilation and air-conditioning system and in the air control ports including air diffuser, suction opening, and exhaust opening.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 7 | Foreword |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions |
| 10 | 4 Symbols and abbreviated terms 5 Types and selection of measurement method 5.1 Types of measurement methods and their application 5.2 Selection of measurement method 6 Basic specifications measuring instruments and utilization methods 6.1 General 6.2 Thermal anemometer |
| 11 | 6.3 Pitot tube and manometer 6.4 Vane-type anemometer 7 Field measuring methods of air flow rate of ventilation and air conditioning systems 7.1 Multipoint air velocity measurement method |
| 12 | 7.1.1 Measurement in a duct |
| 14 | 7.1.2 Measurement method at duct connection of air-conditioning system |
| 15 | 7.1.3 Selection of measuring instruments 7.2 Tracer gas measurement method 7.2.1 Formula |
| 16 | 7.2.2 Tracer gas 7.2.3 Procedures for measuring air flow rate |
| 17 | 7.2.4 Tracer gas injection procedures |
| 18 | 7.2.5 Tracer gas sampling procedures 7.3 Flow hood method 7.3.1 General 7.3.2 Equipment composition |
| 19 | 7.3.3 Measurement procedures 7.4 Pressure compensation measurement method |
| 20 | 7.4.1 Equipment composition |
| 21 | 7.4.2 Measurement procedures 7.4.3 Effective application range 7.5 Pressure difference measurement method 7.5.1 Measuring equipment |
| 22 | 7.5.2 Selection of measuring instruments 7.5.3 Measuring procedures |
| 23 | 8 Uncertainty 8.1 Uncertainty of each measurement 8.1.1 Multipoint air velocity measurement method 8.1.2 Tracer gas measurement method 8.1.3 Flow hood method 8.1.4 Pressure-loss compensation measurement method 8.1.5 Pressure difference measurement method 8.2 Analysis of uncertainty |
| 24 | 9 Measurement report 9.1 Information related to measured object 9.2 Items related to measuring method 9.3 Measurement results |
| 25 | Annex A (normative) Position for cross-section measurement in a duct using multipoint measurement method |
| 29 | Annex B (normative) Accuracy of air velocity measurement instrument |
| 30 | Annex C (informative) Types of tracer gas |
| 31 | Bibliography |
