ДСТУ EN ISO 5802:2022 Промислові вентилятори. Тестування продуктивності на місці (EN ISO 5802:2008, IDT; ISO 5802:2001, IDT)

ДСТУ EN ISO 5802:2022
(EN ISO 5802:2008, IDT; ISO 5802:2001, IDT)

Промислові вентилятори. Тестування продуктивності на місці

 
     
Не є офіційним виданням.
Офіційне видання розповсюджує національний орган стандартизації
(ДП «УкрНДНЦ» http://uas.gov.ua)

Contents

Foreword

Introduction

1 Scope

2 Normative references

3 Terms, definitions and symbols

3.1 Terms and definitions

3.2 Symbols

4 Quantities to be measured

5 General conditions and procedures concerning in situ tests

5.1 General recommendations

5.2 Selection of test point when only the system resistance can be varied

5.3 Fans fitted with adjustment devices

5.4 System throttling devices allowing the system resistance to be altered

5.5 Selection of the test point when the system resistance cannot be varied

5.6 When correction of the coefficient deduced from the test is not necessary

6 Instrumentation

6.1 Instrumentation for measurement of pressure

6.2 Measurement of air velocity

6.3 Measurement of temperature

6.4 Determination of density

6.5 Measurement of rotational speed

7 Determination of fan pressure

7.1 Location of pressure measurement plane

7.2 Measurement of fan pressure

8 Determination of flow rate

8.1 Choice of measuring method

8.2 Choice of measuring section

8.3 Determination of flowrate using differential pressure devices

8.4 Determination of flowrate by velocity area methods

9 Determination of power

9.1 Definition of performance characteristics relating to the power of a fan

9.2 Losses during transmission of power from the motor to the impeller

9.3 Methods for determination of power

9.4 Measuring instruments

9.5 Precautions to be taken during in situ tests

10 Uncertainty associated with the determination of fan performance

10.1 General

10.2 Performance errors

10.3 Uncertainty of measurement

10.4 Specified uncertainties

10.5 Analysis of uncertainty

Annex A (normative) Position of exploration lines for a marginal wall profile compatible with a general power law

Annex B (normative) Determination of the position of the marginal exploration lines in cases not covered by annex A

Annex C (normative) Minimum straight lengths required upstream and downstream of the differential pressure devices (DP device) used for flow measurement

Annex D (normative) Loss allowance for straight, smooth ducts and standardized airways

Annex E (normative) Rotating vane anemometer calibration

Bibliography