SIST EN ISO 11011:2015

SLOVENSKI STANDARD
SIST EN ISO 11011:2015
01-junij-2015
6WLVQMHQL]UDN(QHUJLMVNDXþLQNRYLWRVW2FHQMHYDQMH,62
Compressed air - Energy efficiency - Assessment (ISO 11011:2013)
Druckluft - Energieeffizienz - Bewertung (ISO 11011:2013)
Air comprimé - Efficacité énergétique - Évaluation (ISO 11011:2013)
Ta slovenski standard je istoveten z: EN ISO 11011:2015
ICS:
23.140 .RPSUHVRUMLLQSQHYPDWLþQL Compressors and pneumatic
VWURML machines
SIST EN ISO 11011:2015 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 11011:2015

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SIST EN ISO 11011:2015

EUROPEAN STANDARD
EN ISO 11011

NORME EUROPÉENNE

EUROPÄISCHE NORM
March 2015
ICS 23.140
English Version
Compressed air - Energy efficiency - Assessment (ISO
11011:2013)
Air comprimé - Efficacité énergétique - Évaluation (ISO Druckluft - Energieeffizienz - Bewertung (ISO 11011:2013)
11011:2013)
This European Standard was approved by CEN on 19 March 2015.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 11011:2015 E
worldwide for CEN national Members.

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SIST EN ISO 11011:2015
EN ISO 11011:2015 (E)
Contents Page
Foreword .3
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SIST EN ISO 11011:2015
EN ISO 11011:2015 (E)
Foreword
The text of ISO 11011:2013 has been prepared by Technical Committee ISO/TC 118 “Compressors and
pneumatic tools, machines and equipment” of the International Organization for Standardization (ISO) and has
been taken over as EN ISO 11011:2015 by Technical Committee CEN/TC 232 “Compressors, vacuum pumps
and their systems” the secretariat of which is held by SIS.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by September 2015, and conflicting national standards shall be
withdrawn at the latest by September 2015.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 11011:2013 has been approved by CEN as EN ISO 11011:2015 without any modification.

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SIST EN ISO 11011:2015

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SIST EN ISO 11011:2015
INTERNATIONAL ISO
STANDARD 11011
First edition
2013-09-15
Compressed air — Energy
efficiency — Assessment
Air comprimé — Efficacité énergétique — Évaluation
Reference number
ISO 11011:2013(E)
©
ISO 2013

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SIST EN ISO 11011:2015
ISO 11011:2013(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2013
All rights reserved. Unless otherwise specified, 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
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2013 – All rights reserved

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SIST EN ISO 11011:2015
ISO 11011:2013(E)

Contents  Page
Foreword .v
Introduction .vi
1  Scope . 1
2  Normative references . 1
3  Terms and definitions . 1
3.1 General . 2
3.2 Flow . 3
3.3 Pressure . 4
3.4 Storage . 5
3.5 Volume . 5
4  Roles and responsibilities . 6
4.1 Identification of assessment team members . 6
4.2 Site management support . 7
4.3 Communications . 7
4.4 Access to equipment, resources, and information . 7
4.5 Assessment objectives and scope . 7
4.6 Identification of other assessment team members . 7
4.7 Objective check . 7
5  Assessment methodology. 8
5.1 General . 8
5.2 Systems engineering methods . 8
5.3 Systems engineering process . 8
5.4 System assessment process . 9
6  Parameters and their determination .10
6.1 General .10
6.2 Measurement .10
6.3 Pressure .10
6.4 Flow rate .11
6.5 Power .12
7  Initial data collection and evaluation .13
7.1 General .13
7.2 Plant background .13
7.3 Plant function .13
7.4 Compressed air system definition .13
7.5 Inventory of key end-use air demands .13
7.6 Heat recovery .13
7.7 Baseline period and duration of data logging .14
7.8 Energy use .14
7.9 Compressed air system supply efficiency .14
7.10 System volume .14
7.11 Pressure .15
7.12 Flowrate .15
7.13 Critical air demands .15
7.14 Compressed air waste .15
7.15 Air treatment .15
7.16 Compressor control .16
7.17 Storage .16
7.18 Maintenance .16
7.19 Ambient intake conditions .16
8  Analysis of data from assessment .16
8.1 General .16
© ISO 2013 – All rights reserved iii

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SIST EN ISO 11011:2015
ISO 11011:2013(E)

8.2 Baseline profiles .17
8.3 System volume .19
8.4 Pressure profile .19
8.5 Perceived high-pressure demand .21
8.6 Demand profile .22
8.7 Critical air demands .23
8.8 Compressed air waste .24
8.9 Optimized air treatment .25
8.10 Reduced system operating pressure .26
8.11 Balance of supply and demand .27
8.12 Maintenance opportunities .27
8.13 Heat recovery opportunities .28
9  Reporting and documentation of assessment findings .28
9.1 Assessment report .28
9.2 Confidentiality .29
9.3 Energy-saving opportunities .29
9.4 Data for third-party review .29
Annex A (informative) Introduction to energy assessment .30
Annex B (informative) Assessment activities — General .32
Annex C (informative) Assessment activities — Supply .37
Annex D (informative) Assessment activities — Transmission .43
Annex E (informative) Assessment activities — Demand .47
Annex F (informative) Competencies .50
Bibliography .51
iv © ISO 2013 – All rights reserved

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SIST EN ISO 11011:2015
ISO 11011:2013(E)

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2. www.iso.org/directives
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received. www.iso.org/patents
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
The committee responsible for this document is ISO/TC 118, Compressors and pneumatic tools, machines
and equipment, Subcommittee SC 6, Air compressors and compressed air systems.
© ISO 2013 – All rights reserved v

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SIST EN ISO 11011:2015
ISO 11011:2013(E)

Introduction
1)
This International Standard has been developed with reference to available documentation (see
Bibliography) relating to energy assessment of compressed air systems.
This International Standard is produced to support the objectives of energy management for those
organisations utilizing compressed air and wishing to improve the energy efficiency of such systems.
Remembering the words of Lord Kelvin who said in 1883, “If you cannot measure it, you cannot
improve it”, this International Standard aims to assist with measurement and provide the knowledge
to enable improvement.
The prime consideration for any compressed air system is the ability to generate air with the least
amount of energy. Having done this, the next consideration is to transmit energy from the point of
generation to the point of use with the least loss. The final consideration is to eliminate waste and use
the least amount of air for the production process.
This International Standard uses speciality terms which relate the needs of assessment activities to
those of compressed air systems. Many terms will appear new to the users of this International Standard
who are familiar with general compressed air terms.
A general introduction to energy assessment is given in Annex A.
1) Extracts from ASME EA-4-2010 were used with permission from ASME. The core elements used are from Scope
and Introduction, Organizing the Assessment, Analysis of Data From the Assessment, Reporting and Documentation,
and Mandatory Appendices — I, Preliminary Data Collection Matrix.
vi © ISO 2013 – All rights reserved

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SIST EN ISO 11011:2015
INTERNATIONAL STANDARD ISO 11011:2013(E)
Compressed air — Energy efficiency — Assessment
WARNING — Users of this International Standard are advised that energy-related judgements
should not compromise safety issues.
1  Scope
This International Standard sets requirements for conducting and reporting the results of a compressed
air system assessment (hereafter referenced as an “assessment”) that considers the entire system, from
energy inputs to the work performed as the result of these inputs.
This International Standard considers compressed air systems as three functional subsystems:
— supply which includes the conversion of primary energy resource to compressed air energy;
— transmission which includes movement of compressed air energy from where it is generated to
where it is used;
— demand which includes the total of all compressed air consumers, including productive end-use
applications and various forms of compressed air waste.
This International Standard sets requirements for
— analysing the data from the assessment,
— reporting and documentation of assessment findings, and
— identification of an estimate of energy saving resulting from the assessment process.
This International Standard identifies the roles and responsibilities of those involved in the
assessment activity.
This International Standard provides indicative information in Annexes B, C, D, and E of the type of
data to be collected to assist in a successful assessment. The information provided is not exhaustive
and therefore is not intended to restrict the inclusion of other data. The form and presentation of the
information given in the annexes is also not intended to restrict the manner of presentation of the
reporting to the client.
2  Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 1217, Displacement compressors — Acceptance tests
ISO 5598, Fluid power systems and components — Vocabulary
3  Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 1217 and ISO 5598 and the
following apply.
© ISO 2013 – All rights reserved 1

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SIST EN ISO 11011:2015
ISO 11011:2013(E)

3.1  General
3.1.1
air treatment
any process provided for the purpose of separation and purification of the compressed air
3.1.2
artificial demand
excess air consumed by a system’s unregulated or poorly regulated uses due to operating at a pressure
in excess of actual requirements
3.1.3
assessment team
authority to fulfil roles and responsibility of the assessment having appropriate functions and knowledge
3.1.4
baseline
set of typical operating period, work conditions, and performance parameters revealed by assessment
and used for comparison of efficiency of measures recommended as a result of energy efficiency
assessment procedures
3.1.5
compressed air point of use
components using the pneumatic energy for physical or chemical actions
3.1.6
compressed air systems
group of subsystems comprising integrated sets of components, including air compressors, treatment
equipment, controls, piping, pneumatic tools, pneumatically powered machinery, and process
applications utilizing compressed air
3.1.7
compressed air system assessment
activity which considers all components and functions, from energy inputs (SUPPLY SIDE) to the work
performed (DEMAND SIDE) as the result of these inputs; undertaken to observe, measure, and document
energy reduction and performance improvement opportunities in a compressed air system
3.1.8
data logging
measurement of physical parameters while tabulating a periodic log (record) of their numerical value
using time-aligned data frames for the plurality of recorded parameters
Note 1 to entry: Two types of data logging are:
a) dynamics: data logging while creating a sufficiently high frequency periodic log (record) so as to investigate
the time-based variation of measured physical parameters
b) trending: data logging during an extended duration of time for the purpose of investigating regularities,
irregularities, or both in the measured physical parameters throughout time
3.1.9
demand
total of all compressed air consumers, including productive end-use applications and various forms of
compressed air waste
3.1.10
drawdown
circumstance observed in a compressed air system that is characterized by continual pressure decay
arising from a compressed air system event whereby air demand exceeds the capacity of supply
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SIST EN ISO 11011:2015
ISO 11011:2013(E)

3.1.11
operating period
group of typical time periods that share similar compressed air energy and compressed air demand profiles
Note 1 to entry: See 3.1.15.
3.1.12
spot check measurement
measurement of physical parameters creating a log (record) of their numerical value that is carried out
at random time intervals or limited to a few instances
3.1.13
supply
conversion of primary energy resource to compressed air energy
3.1.14
transmission
movement of compressed air energy from where it is generated to where it is used
3.1.15
typical operating period
time period that represents a period of typical plant operation
3.2  Flow
3.2.1
demand flow rate
total airflow rate of demand-side consumption
Note 1 to entry: Demand-side consumption includes productive consumers, inappropriate usage, artificial
demand, and demand-side waste. This takes into account supply flow plus or minus the compressed air supplied
to system demand from secondary storage as
...