ISO 22484:2024
(Main)Displacement and dynamic compressors — Performance test code for electric driven low-pressure air compressor packages
Displacement and dynamic compressors — Performance test code for electric driven low-pressure air compressor packages
This document specifies the performance test method of electrically driven low-pressure air compressor packages, where the compression is performed by positive displacement or dynamic compression; utilising atmospheric air as the compression gas. Low-pressure air compressor packages are often referred to as “blowers”. NOTE Throughout this document, the term ‘low-pressure compressor’ is used to describe a low-pressure air compressor (“blower”) package Low-pressure compressors with and without means of controlling flow (control may be electrical (e.g. with a variable frequency drive) or mechanical or both) are covered. This document applies to low-pressure compressors meeting all the following limits: — Atmospheric inlet air pressure between 0,5 bar and 1,1 bar. — Discharge vs inlet pressure differential between 0,1 bar and 2,5 bar. — Discharge vs inlet pressure ratio between 1,1 and 3,5. This document is not applicable to: — positive displacement low-pressure compressors with a liquid in the compression element (such as liquid ring pumps and liquid injected low-pressure compressor of screw type) — multi-stage low-pressure compressors other than multistage centrifugal compressors comprised of multiple, identical or very similar uncooled sections along a single shaft (repeating stages). — single shaft, multistage centrifugal compressors are treated from the point of measurement and calculation as a single stage
Compresseurs volumétriques et turbocompresseurs — Code d'essai de performance des ensembles de compresseurs à air basse pression à entraînement électrique
General Information
Standards Content (Sample)
International
Standard
ISO 22484
First edition
Displacement and dynamic
2024-11
compressors — Performance
test code for electric driven low-
pressure air compressor packages
Compresseurs volumétriques et turbocompresseurs — Code
d'essai de performance des ensembles de compresseurs à air
basse pression à entraînement électrique
Reference number
© ISO 2024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Units. 6
5 Guarantee and measurement . 8
5.1 Packaged compressor .8
5.2 Preconditions of the guarantee .8
5.3 Object of the guarantee .9
5.4 Low-pressure compressor to be tested .9
5.5 Low-pressure compressor specifications to be provided prior to testing .10
6 Measuring equipment, methods and accuracy . 10
6.1 General .10
6.2 Measurement of pressure .10
6.2.1 General .10
6.2.2 Atmospheric pressure .11
6.2.3 Pressure measurement for ambient inlet .11
6.2.4 Pressure measurement for piped inlet .11
6.2.5 Pressure measurement for piped discharge.11
6.3 Measurement of temperature .11
6.3.1 General .11
6.3.2 Temperature measurement for ambient inlet . 12
6.3.3 Temperature measurement for piped inlet . 12
6.3.4 Temperature measurement for piped discharge . 12
6.4 Measurement of humidity . 12
6.5 Measurement of rotational frequency . 12
6.6 Measurement of flow rate . 12
6.7 Measurement of external coolant flow rate . 12
6.8 Measurement of power and energy . 12
6.8.1 General . 12
6.9 Calibration of instruments. 13
7 Test .13
7.1 General test process . . 13
7.2 Allowed deviation of rotational speed between test and guarantee .14
7.3 Allowed deviation of ambient conditions . 15
7.3.1 Testing against general performance data . 15
7.3.2 Testing against customer specified data sheets . 15
7.4 Allowed deviation of preconditions . . 15
7.5 Allowed deviation of machine Mach number . 15
7.6 Selection of test flow .16
7.6.1 Selection of flow setting .16
7.7 Selection of test pressure .16
7.7.1 Note: The following terms are required for R and K with formulae and source. .16
te te
7.7.2 For positive displacement low-pressure compressors with or without internal
compression . . .16
7.7.3 For dynamic low-pressure compressors .17
7.8 Allowed deviation of flow and work coefficient .17
7.8.1 Allowed deviations to be checked for test validity .17
7.9 Fluctuations on the specific test readings/results during test at steady state .17
7.10 Two-speed test.18
7.10.1 General .18
iii
7.10.2 First test .18
7.10.3 Second test .18
8 Correction of test results . 19
8.1 General .19
8.2 Correction of measured flow (variable speed packaged compressors, only) .19
8.3 Correction of measured pressure . .19
8.3.1 For dynamic low-pressure packaged compressors .19
8.3.2 For positive displacement low-pressure packaged compressors . 20
8.3.3 For positive displacement and dynamic low-pressure packaged compressors . 20
8.4 Correction of specific energy demand . 20
8.5 Corrected packaged compressor power consumption .21
8.6 Power correction of the two-speed test.21
8.7 Calculated package isentropic efficiency .21
8.8 Comparison of corrected values with guaranteed values . 22
8.9 Examples of calculations . 22
9 Test report .23
9.1 Test report content . 23
9.2 Test results summary . . 23
Annex A (normative) Equipment checklist .24
Annex B (informative) Test result summary .25
Annex C (informative) Examples of acceptance test reports/calculations .26
Annex D (informative) Background of thermodynamics .50
Bibliography .
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.