SIST EN 16247-3:2022
(Main)Energy audits - Part 3: Processes
Energy audits - Part 3: Processes
This document specifies the requirements, methodology and deliverables of an energy audit within a process. These consist of:
a) organizing and conducting an energy audit;
b) analysing the data from the energy audit;
c) reporting and documenting the energy audit findings.
This part of the standard applies to sites where the energy use is due to process. It is used in conjunction with and is supplementary to EN 16247-1, Energy audits — Part 1: General requirements. It provides additional requirements to EN 16247-1 and is applied simultaneously.
A process could include one or more production lines, offices, laboratories, research centres, packaging and warehouse sections with specific operational conditions and site transportation. An energy audit could include the whole site or part of a site.
If buildings are included in the scope of the energy audit, the energy auditor may choose to apply EN 16247-2, Energy Audits — Part 2: Buildings. If on-site transport on a site is included in the scope of the energy audit, the energy auditor may choose to apply EN 16247-4, Energy audits — Part 4: Transport.
NOTE The decision to apply Parts 2 and 4 could be made during the preliminary contact, see 5.1.
Energieaudits - Teil 3: Prozesse
Dieses Dokument legt die Anforderungen, die Methodik und die Ergebnisse eines Energieaudits im Rahmen eines Prozesses fest. Diese bestehen aus:
a) Organisieren und Durchführen eines Energieaudits;
b) Analysieren der Daten aus dem Energieaudit;
c) Berichten und Dokumentieren der Feststellungen des Energieaudits.
Dieser Teil der Norm gilt für Standorte, an denen sich der Energieeinsatz aus dem Prozess ergibt. Er ist in Verbindung mit und zusätzlich zu EN 16247-1, Energieaudits — Teil 1: Allgemeine Anforderungen, anzuwenden. Er stellt zusätzliche Anforderungen zu EN 16247-1 bereit und ist gleichzeitig anzuwenden.
Ein Prozess könnte eine oder mehrere Fertigungslinien, Büros, Laboratorien, Forschungszentren, Verpackungs- und Lagerhausbereiche mit spezifischen Betriebsbedingungen sowie Transporte vor Ort umfassen. Ein Energieaudit könnte den gesamten Standort oder einen Teil davon umfassen.
Falls Gebäude im Anwendungsbereich des Energieaudits enthalten sind, darf sich der Energieauditor für die Anwendung von EN 16247-2, Energieaudits — Teil 2: Gebäude, entscheiden. Falls die Anlieferung an einen Standort Bestandteil des Anwendungsbereichs des Energieaudits ist, darf sich der Energieauditor für die Anwendung von EN 16247-4, Energieaudits — Teil 4: Transport entscheiden.
ANMERKUNG Die Entscheidung zur Anwendung der Teile 2 oder 4 könnte während des einleitenden Kontakts getroffen werden, siehe 5.1.
Audits énergétiques - Partie 3 : Procédés
Le présent document spécifie les exigences, la méthodologie et les livrables d’un audit énergétique
portant sur un procédé. Cela comprend :
a) l’organisation et la conduite d’un audit énergétique ;
b) l’analyse des données collectées lors de l’audit énergétique ;
c) la consignation et la documentation des résultats de l’audit énergétique.
La présente Partie de la norme s’applique aux sites sur lesquels la consommation d’énergie est due à
des procédés. Elle est utilisée conjointement avec l’EN 16247-1, Audits énergétiques — Partie 1 :
Exigences générales, qu’elle complète. Elle fournit des exigences supplémentaires à celles de
l’EN 16247-1 et est appliquée simultanément.
Un procédé peut comprendre une ou plusieurs chaînes de fabrication, des bureaux, des laboratoires,
des centres de recherche, des zones de conditionnement et de stockage avec des conditions de
fonctionnement spécifiques et des systèmes de transport sur le site. Un audit énergétique est
susceptible de couvrir la globalité du site ou une partie de celui-ci.
Si des bâtiments sont inclus dans le champ d’application de l’audit énergétique, l’auditeur énergétique
peut choisir d’appliquer l’EN 16247-2, Audits énergétiques — Partie 2 : Bâtiments. Si le transport sur un
site est inclus dans le champ d’application de l’audit énergétique, l’auditeur énergétique peut choisir
d’appliquer l’EN 16247-4, Audits énergétiques — Partie 4 : Transport.
NOTE La décision d’appliquer les Parties 2 et 4 peut être prise lors de la prise de contact préliminaire,
voir 5.1.
Energetske presoje - 3. del: Procesi
Ta dokument določa zahteve, metodologijo in končne izsledke energetske presoje med procesom. Mednje spadajo:
a) organizacija in izvajanje energetske presoje;
b) analiza podatkov iz energetske presoje;
c) sporočanje in dokumentiranje ugotovitev energetske presoje.
Ta del standarda se uporablja za mesta, kjer gre za rabo energije zaradi procesov. Uporablja se v povezavi s standardom EN 16247-1, Energetske presoje – 1. del: Splošne zahteve, in ga dopolnjuje. Vsebuje dodatne zahteve k standardu EN 16247-1 in se uporablja istočasno.
Proces lahko vključuje eno ali več proizvodnih linij, pisarn, laboratorijev, raziskovalnih centrov, pakirnic in skladišč s posebnimi obratovalnimi pogoji ter prevozom na kraju samem. Energetska presoja lahko vključuje celotno mesto presoje ali del mesta.
Če so v obseg energetske presoje vključene stavbe, lahko energetski presojevalec uporabi standard EN 16247-2, Energetske presoje – 2. del: Stavbe. Če je v obseg energetske presoje vključen transport znotraj mesta presoje, lahko energetski presojevalec uporabi standard EN 16247-4, Energetske presoje – 4. del: Transport.
OPOMBA: Odločitev o uporabi 2. in 4. dela se lahko sprejme med začetnim stikom, glej točko 5.1.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 16247-3:2022
01-oktober-2022
Nadomešča:
SIST EN 16247-3:2014
Energetske presoje - 3. del: Procesi
Energy audits - Part 3: Processes
Energieaudits - Teil 3: Prozesse
Audits énergétiques - Partie 3 : Procédés
Ta slovenski standard je istoveten z: EN 16247-3:2022
ICS:
03.100.70 Sistemi vodenja Management systems
27.015 Energijska učinkovitost. Energy efficiency. Energy
Ohranjanje energije na conservation in general
splošno
SIST EN 16247-3:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 16247-3:2022
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SIST EN 16247-3:2022
EUROPEAN STANDARD EN 16247-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2022
ICS 03.120.10; 27.015
Supersedes EN 16247-3:2014
English version
Energy audits - Part 3: Processes
Audits énergétiques - Partie 3 : Procédés Energieaudits - Teil 3: Prozesse
This European Standard was approved by CEN on 3 July 2022.
CEN and CENELEC 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 and CENELEC 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 and CENELEC member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.
CEN and CENELEC members are the national standards bodies and national electrotechnical committees of Austria, Belgium,
Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia,
Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and United Kingdom.
CEN-CENELEC Management Centre:
Rue de la Science 23, B-1040 Brussels
© 2022 CEN/CENELEC All rights of exploitation in any form and by any means
Ref. No. EN 16247-3:2022 E
reserved worldwide for CEN national Members and for
CENELEC Members.
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SIST EN 16247-3:2022
EN 16247-3:2022 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Quality requirements . 7
4.1 Energy auditor . 7
4.2 Energy audit process . 7
5 Elements of the energy audit process . 7
5.1 Preliminary contact . 7
5.2 Start-up meeting . 7
5.3 Collecting data . 8
5.3.1 General . 8
5.3.2 Information request . 8
5.3.3 Review of the available data. 8
5.3.4 Preliminary data analysis . 9
5.4 Measurement plan . 9
5.5 Sampling methods . 9
5.6 Field work . 9
5.6.1 Aim of field work . 9
5.6.2 Conduct .10
5.6.3 Site visits .10
5.7 Analysis .10
5.7.1 General .10
5.7.2 Energy balance and breakdown .10
5.7.3 Energy performance indicators .10
5.7.4 Identify and evaluate energy performance improvement actions (EPIA) .11
5.8 Report .12
5.8.1 General .12
5.8.2 Content of report .12
5.9 Final meeting .12
Annex A (informative) Flow diagram of energy audit for processes .13
Annex B (informative) Data which could be collected .14
Annex C (informative) Quality of measurement plan .23
C.1 General .23
C.2 The measurement plan .23
Annex D (informative) Minimum criteria for a representative energy sampling for multi-site
organizations. .25
Bibliography .27
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SIST EN 16247-3:2022
EN 16247-3:2022 (E)
European foreword
This document (EN 16247-3:2022) has been prepared by the Joint Technical Committee CEN-
CENELEC/JTC 14 “Energy management and energy efficiency in the framework of energy transition”, the
secretariat of which is held by UNI.
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 February 2023, and conflicting national standards shall
be withdrawn at the latest by February 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN-CENELEC shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 16247-3:2014.
Significant changes compared to the previous edition are:
a) terms and definition updated;
b) structure aligned with EN 16247-1;
c) sampling method allowed as energy audit process;
d) new Annex D with an example of methodology for multi-sites audit sampling in industrial companies.
This document is part of series EN 16247 “Energy audits”, which comprises the following:
— Part 1: General requirements;
— Part 2: Buildings;
— Part 3: Processes;
— Part 4: Transport;
— Part 5: Competence of energy auditors.
This Part provides additional material to Part 1 for the Process sector and is intended to be used in
conjunction with Part 1.
This document has been prepared under a mandate given to CEN and CENELEC by the European
Commission and the European Free Trade Association.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN and CENELEC
websites.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United
Kingdom.
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EN 16247-3:2022 (E)
Introduction
An energy audit can help an organization to identify opportunities to improve energy performance. It can
be part of a site wide energy management system.
There are various sectors with important differences in processes and utilities. It should be emphasized
that there are many types of processes in industry and commerce, with important differences in energy
use and energy consumption. In general, energy is used:
— directly by a process, e.g. furnaces, direct fired dryers, etc.;
— indirectly by a process (e.g. heat exchange, distillation, extrusion, etc.) including the specific
conditions of production (e.g. start-up, shut-down, product change over, cleaning, maintenance,
laboratory and product transfer);
— utility processes (e.g. motor driven systems such as fans, pumps, motors, compressors, etc., steam,
hot water), including on site power plants;
— other processes (e.g. sterilization in hospitals, fume cupboards, laboratories, etc.).
This document defines the attributes of an appropriate quality energy audit for processes in addition to
EN 16247-1, which gives the general requirements for energy audits.
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EN 16247-3:2022 (E)
1 Scope
This document specifies the requirements, methodology and deliverables of an energy audit within a
process. These consist of:
a) organizing and conducting an energy audit;
b) analysing the data from the energy audit;
c) reporting and documenting the energy audit findings.
This part of the standard applies to sites or parts of sites where a significant part of the energy use is due
to processes. It is used in conjunction with and is supplementary to EN 16247-1, Energy audits — Part 1:
General requirements. It provides additional requirements to EN 16247-1 and is applied simultaneously.
A process can include one or more production lines or services, offices, laboratories, research centres,
packaging and warehouse sections with specific operational conditions and site transportation. An
energy audit can include the whole site or part of a site.
If buildings are included in the scope of the energy audit, the energy auditor can choose to apply
EN 16247-2, Energy Audits — Part 2: Buildings. If on-site transport on a site is included in the scope of
the energy audit, the energy auditor can choose to apply EN 16247-4, Energy audits — Part 4: Transport.
NOTE The decision to apply Parts 2 and/or 4 is expected to be made during the preliminary contact, see 5.1.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 16247-1:2022, Energy audits — Part 1: General requirements
EN 16247-2:2022, Energy audits — Part 2: Buildings
EN 16247-4:2022, Energy audits — Part 4: Transport
EN 16247-5, Energy audits — Part 5: Competence of energy auditors
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 16247-1 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
production process
all the steps necessary to manufacture a product or to deliver a service
Note 1 to entry: Production process could include specific facilities for health, safety and environment pollution
control.
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3.2
utility
energy carrier necessary for the process and auxiliary
Note 1 to entry: A utility could be generated on-site, off-site, or purchased from a third party.
EXAMPLE Steam, hot water, compressed air, etc.
3.3
utility process
set of utility equipment and distribution
Note 1 to entry: If the utility is purchased from a third party, utility process is only the utility distribution.
Note 2 to entry: All processes, not linked to one specific process or service, and whose purpose is limited to the
transformation, distribution or storage of energy.
3.4
site
processes within the boundary of the organization
Note 1 to entry: This may include pollution treatment processes and energy recovery, and waste product.
3.5
building
construction as a whole, including its envelope and all technical building systems, for which energy may
be used to condition the indoor climate, to provide domestic hot water and illumination and other
services related to the use of the building and the activities performed within the building
Note 1 to entry: The term can refer to the building as a whole or to parts thereof that have been designed or
altered to be used separately.
Note 2 to entry: The building could include its site location and related external environment.
[SOURCE: EN 16247-2:2022, 3.1]
3.6
energy
electricity, fuels, steam, heat, compressed air, and other similar media
Note 1 to entry: For the purposes of this document, energy refers to the various type of energy, including
renewable, which can be purchased, stored, treated, used in equipment or in a process, or recovered.
[SOURCE: EN ISO 50001:2018, 3.5]
3.7
energy performance improvement action
EPIA
action or measure or group of action or measures implemented or planned within an organization
intended to achieve energy performance improvement through technological, managerial or operational,
behavioural, economical, or other changes
[SOURCE: EN 16247-1:2022, 3.9]
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EN 16247-3:2022 (E)
4 Quality requirements
4.1 Energy auditor
The qualification of an energy auditor is defined in EN 16247-5.
4.2 Energy audit process
The quality of the energy audit depends on the knowledge of the processes, the site and available data
and information. Close collaboration between the energy auditor and the organization is essential. When
a sampling method is used, the selected samples shall be representative of the whole audited objects.
NOTE An example energy audit process is shown in Annex A.
5 Elements of the energy audit process
5.1 Preliminary contact
The energy auditor shall obtain a preliminary description of the site and the relevant processes from the
organization or from a site visit.
NOTE 1 The preliminary contact can be a physical meeting, by telephone, webinar or other remote interactive
discussions.
The energy auditor shall agree with the organization on the scope and boundary of the energy audit in
terms of:
a) processes included in the energy audit;
NOTE 2 A process can be defined as the whole process, part of a process, part of a system or a component.
b) whether or not outsourced utilities are included in the energy audit;
c) depending of the thoroughness of the energy audit, required by the organization, the energy auditor
shall design and carry out the energy audit taking into consideration the requirements of the relevant
standard (see bibliography).
For energy use not directly related to process (e.g. storing, packaging, logistics, offices, research centre,
laboratory and transport), the energy auditor shall agree with the organization the applicability of
EN 16247-2 and EN 16247-4. This choice and the agreed scope shall be clearly stated in the final energy
audit report (see 5.8).
For each audited process, the energy auditor and organization shall agree which members of staff, and
their roles, have a significant impact on energy consumption and energy performance, and propose a
preliminary list of data to be collected.
5.2 Start-up meeting
The energy auditor and organization shall agree energy performance indicators which can be used in the
energy audit.
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5.3 Collecting data
5.3.1 General
The data collection could be carried out over several stages during an energy audit.
During data collection, the energy auditor shall:
a) verify the data and information provided by the organization (e.g. the indicated power rating or the
number of pieces of equipment);
b) obtain any missing data;
c) check the quality and plausibility of the data and ask for correction if significant mistakes or
inaccuracies are identified.
5.3.2 Information request
In addition to the information requested in EN 16247-1, the energy auditor shall request from the
organization the following:
a) site information including building, boundary and other relevant information;
b) utility processes information;
c) production processes information;
1) product specification;
2) main processes equipment involved in the process (drawings, other relevant technical data and
datasheets);
3) current operational conditions (set points) of utilities and production process;
4) specific condition and constraint for process and environment (security, pollution, health, etc.).
d) energy sources information.
NOTE 1 The collected data can be based on invoices, contracts, measurements, calculations from given operating
hours and installed capacity (technical characteristics), operation and maintenance documents, meeting with
operations and maintenance personnel, etc.
NOTE 2 See Annex B for examples of data to be collected.
5.3.3 Review of the available data
The energy auditor shall review the information collected for consistency and suitability.
The energy auditor shall assess whether the information provided is sufficient to achieve the agreed
objective.
If data requested is not available, or the provided data evaluated as unreliable, the energy auditor shall
define the method to obtain the necessary information (e.g. measurements, estimates, modelling, etc.).
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5.3.4 Preliminary data analysis
The energy auditor shall carry out an analysis of the data collected in order to:
a) undertake a preliminary analysis of the site's energy balance on the basis of energy bills and output;
b) identify the relevant variables and static factors;
c) make a first identification of the significant energy uses;
d) establish the relevant energy performance indicator(s);
e) evaluate the distribution of energy consumption on the basis of sub-meter reading, installed capacity
and operating time;
f) evaluate the energy efficiency of the equipment and processes;
g) if there is sufficient information, to cover at least one complete operation cycle, establish an energy
baseline;
h) plan further data collection and measurements to be carried out during field works (5.4).
The energy auditor should develop preliminary EPIA.
The energy auditor shall agree with the organization about any measurement plan on:
1) objectives and parameters;
2) content;
3) required measurement conditions.
NOTE See Annex C for quality measurement plans.
5.4 Measurement plan
The general requirements for the measurement plan are defined in EN 16247-1:2022, 5.4.
5.5 Sampling methods
The general requirements for the sampling methods are defined in EN 16247-1:2022, 5.5.
5.6 Field work
5.6.1 Aim of field work
If necessary, the energy auditor shall carry out additional measurement to:
a) collect any missing data needed for analysis;
b) confirm the suitability of the baseline;
c) confirm the energy consumption, energy balance, relevant variables and static factors;
d) confirm the current operational conditions (set points) of utilities and production processes and the
impact with energy use and consumption;
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e) collect all relevant information from identification plates, obtain the operation times of the relevant
processes, hold interviews with operators, etc.
5.6.2 Conduct
The conduct of energy auditor during field work is defined in EN 16247-1:2022, 5.6.2.
5.6.3 Site visits
The energy auditor shall visit the site and audited processes.
NOTE The schedule for site visits is planned during the start-up meeting (5.2).
5.7 Analysis
5.7.1 General
The energy auditor shall:
a) calculate the current energy performance of the relevant processes;
b) compare current energy performance against the best available technology benchmarks;
c) compare the energy needs with the sizing of the process and/or its components.
5.7.2 Energy balance and breakdown
The energy auditor shall provide:
a) a breakdown the energy consumption by energy type;
b) a breakdown the consumption of energy carriers into a company energy structure (for example main
activities, auxiliary services, general services) to cost effectiveness level;
c) a breakdown the energy consumption by processes in absolute number and in consistent energy
unit;
If the activity is time varying, it is recommended to establish the energy consumption at different
time periods in relation to the processes;
d) a demonstration of an energy balance between energy consumption and energy losses based on
appropriate method.
EXAMPLE Material and energy balance, Sankey diagram, steady-state computer simulation.
If feasible, the energy auditor shall determine the energy consumption without production or activity
(baseload).
The energy balance and breakdown shall be representative of the energy input and energy use.
It shall be clear which is based on measured, estimated or accurately calculated data.
5.7.3 Energy performance indicators
The energy auditor and the organization shall discuss and agree on the relevant energy performance
indicators. The analysis shall utilize the agreed energy performance indicators.
NOTE If an energy management system exists, the energy auditor can use the relevant energy performance
indicators used in the energy management system.
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5.7.4 Identify and evaluate energy performance improvement actions (EPIA)
The energy auditor shall propose EPIA including one or more of the following:
a) measures in order to reduce or to recover the energy losses;
EXAMPLE 1 Improve insulation, reduction of leakage of compressed air systems, waste heat recovery, etc.
b) replacement, modification or addition of equipment;
EXAMPLE 2 High efficiency boiler, variable speed motor, energy efficient lighting, etc.
c) more efficient operation and continual optimization;
EXAMPLE 3 Operating procedure, process and utility automation, logistic and layout optimization, set point
adjustment, etc.
d) improved maintenance;
EXAMPLE 4 Improved maintenance planning, training of the operation- and maintenance staff, etc.
e) deployment of behavioural change programme;
EXAMPLE 5 Training, energy awareness campaigns, etc.
f) improvement of energy management.
EXAMPLE 6 Improvement in metering and monitoring plan, implement energy management system, etc.
The energy auditor shall identify EPIA on the basis of:
1) the equipment's age, condition, how it is operated and managed;
2) the technology of installed equipment in comparison to the most efficient equipment on the market;
NOTE The energy auditor can use EN 16231:2012 for energy efficiency benchmarking methodology.
3) the planned life time of the processes.
The energy auditor should consider the use of renewable energy sources and combined heat and power
plants. Renewables could be taken into account if they lead to improvement of performance as stated in
EN ISO 50001:2018, A.6.3.
The energy auditor should consider whether onsite energy generation from combined heat and power or
renewables could contribute to an energy performance improvement of the process(es). Any assessment
of onsite renewable energy production would be separate from the process energy audit as indicated in
EN ISO 50001:2018, A.6.3.
The energy auditor should propose to categorize the EPIA to:
i) people-based opportunities (e.g. training, awareness, etc.);
ii) technical based opportunities (e.g. operations, maintenance and replacement of machines);
iii) organizational based opportunities (e.g. structure of organization, responsibilities).
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For each of the proposed EPIA, the energy auditor shall calculate the expected energy saving (before and
after implementing the energy performance improvement), taking into consideration the appropriate
relevant variables and static factors.
Whenever possible, the energy auditor shall consider the applicability of life-cycle cost analysis.
The energy auditor shall consider the possible tariff change for lower energy cost.
5.8 Report
5.8.1 General
The general requirements for the energy audit report are defined in EN 16247-1:2022, 5.8.
5.8.2 Content of report
The auditor shall give the following information for each of the recommended EPIA:
a) description of the existing system or equipment that is affected, its current energy consumption,
energy performance and the reason for the proposal for improvement;
b) description of the proposed EPIA, the predicted energy consumption, energy performance, and cost
savings;
c) other benefits which are not related to the energy performance or costs.
EXAMPLE Non-energy performance improvement related benefit may range from quality improvement,
manufacturing flexibility, reduced maintenance, reduce water consumption, reduce waste, lower carbon dioxide
emissions and improved working condition.
5.9 Final meeting
The requirements for final meeting are defined in EN 16247-1:2022, 5.9.
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SIST EN 16247-3:2022
EN 16247-3:2022 (E)
Annex A
(informative)
Flow diagram of energy audit for processes
Figure A.1
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EN 16247-3:2022 (E)
Annex B
(informative)
Data which could be collected
a) General information on the running of the organization:
1) products processed/manufactured;
2) daily/annual production;
3) name of the energy official;
4) name of the transport official;
5) operating times;
6) start up and shut downs;
7) shift patterns;
b) Energy sources:
1) inventory of energy sources used on site;
2) daily/monthly/annual consumption;
3) size and annual energy production of photovoltaic installations on site (+ size and type of energy
storage);
4) size and annual energy production of solar thermal installations on site (temperature of the heat
produced, which process uses the heat,
...
SLOVENSKI STANDARD
oSIST prEN 16247-3:2020
01-marec-2020
Energetske presoje - 3. del: Procesi
Energy audits - Part 3: Processes
Energieaudits - Teil 3: Prozesse
Audits énergétiques - Partie 3 : Procédés
Ta slovenski standard je istoveten z: prEN 16247-3
ICS:
03.100.70 Sistemi vodenja Management systems
27.015 Energijska učinkovitost. Energy efficiency. Energy
Ohranjanje energije na conservation in general
splošno
oSIST prEN 16247-3:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 16247-3:2020
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oSIST prEN 16247-3:2020
EUROPEAN STANDARD
DRAFT
prEN 16247-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2020
ICS 03.120.10; 27.015
Will supersede EN 16247-3:2014
English version
Energy audits - Part 3: Processes
Audits énergétiques - Partie 3 : Procédés Energieaudits - Teil 3: Prozesse
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/CLC/JTC 14.
If this draft becomes a European Standard, CEN and CENELEC 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.
This draft European Standard was established by CEN and CENELEC in three official versions (English, French, German). A
version in any other language made by translation under the responsibility of a CEN and CENELEC member into its own
language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN and CENELEC members are the national standards bodies and national electrotechnical committees of Austria, Belgium,
Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia,
Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.Recipients of this draft are invited to submit, with their comments, notification
of any relevant patent rights of which they are aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
CEN-CENELEC Management Centre:
Rue de la Science 23, B-1040 Brussels
© 2020 CEN/CENELEC All rights of exploitation in any form and by any means Ref. No. prEN 16247-3:2020 E
reserved worldwide for CEN national Members and for
CENELEC Members.
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Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Quality requirements . 6
4.1 Energy auditor . 6
4.2 Energy audit process . 7
5 Elements of the energy audit process . 7
5.1 Preliminary contact . 7
5.2 Start-up meeting . 7
5.3 Collecting data . 7
5.3.1 General . 7
5.3.2 Information request . 8
5.3.3 Review of the available data . 8
5.3.4 Preliminary data analysis . 8
5.4 Field work . 9
5.4.1 Aim of field work . 9
5.4.2 Conduct . 9
5.4.3 Site visits. 9
5.5 Analysis . 9
5.5.1 General . 9
5.5.2 Energy balance and breakdown . 10
5.5.3 Energy performance indicators . 10
5.5.4 Identify and evaluate energy performance improvement opportunities . 10
5.6 Report . 11
5.6.1 General . 11
5.6.2 Content of report . 12
5.7 Final meeting . 12
Annex A (informative) Flow diagram of energy audit for processes . 13
Annex B (informative) Data which could be collected . 14
Annex C (informative) Quality of data measurement plan . 22
Annex D (informative) Minimum criteria for a representative energy sampling for
multi-sites companies. The Italian model . 24
Bibliography . 26
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European foreword
This document (prEN 16247-3:2020) has been prepared by Technical Committee
CEN/CLC/JTC14 WG 1 “Energy audits”, the secretariat of which is held by BSI.
This Part provides additional material to Part 1 for the Process sector and should be used in
conjunction with Part 1.
This document is part of the series EN 16247 “Energy audits” which comprises the following:
— Part 1 General requirement;
— Part 2 Buildings;
— Part 3 Processes;
— Part 4 Transport;
— Part 5 Competence of energy auditors.
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Introduction
An energy audit can help an organization to identify opportunities to improve energy efficiency.
It can be part of a site wide energy management system.
There are various sectors with important differences in processes and utilities. It should be
emphasized that there are many types of processes in industry and commerce. In general,
energy is used:
— directly by a process, e.g. furnaces, direct fired dryers, etc;
— indirectly by a process (e.g. heat exchange, distillation, extrusion, etc.) including the specific
conditions of production (e.g. start-up, shut-down, product change over, cleaning,
maintenance, laboratory and product transfer);
— utility processes (e.g. motor driven systems (fans, pumps, motors, compressors, etc.), steam,
hot water), including on site power plants;
— other processes (e.g. sterilization in hospitals, fume cupboards, laboratories etc.).
This document defines the attributes of an appropriate quality energy audit for processes in
addition to EN 16247-1, which gives the general requirements for energy audits.
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1 Scope
This document specifies the requirements, methodology and deliverables of an energy audit
within a process. These consist of:
a) organizing and conducting an energy audit;
b) analysing the data from the energy audit;
c) reporting and documenting the energy audit findings.
This part of the standard applies to sites where the energy use is due to process. It is used in
conjunction with and is supplementary to EN 16247-1, Energy audits — Part 1: General
requirements. It provides additional requirements to EN 16247-1 and is applied
simultaneously.
A process could include one or more production lines, offices, laboratories, research centres,
packaging and warehouse sections with specific operational conditions and site transportation.
An energy audit could include the whole site or part of a site.
If buildings are included in the scope of the energy audit, the energy auditor may choose to
apply EN 16247-2, Energy Audits — Part 2: Buildings. If on-site transport on a site is included in
the scope of the energy audit, the energy auditor may choose to apply EN 16247-4, Energy
audits — Part 4: Transport.
NOTE The decision to apply Parts 2 and 4 could be made during the preliminary contact, see 5.1.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements of this document. For dated references, only the edition cited
applies. For undated references, the latest edition of the referenced document (including any
amendments) applies.
EN 16247-1:2012, Energy audits - Part 1: General requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions in EN 16247-1 and the following
apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
production process
all the steps necessary to manufacture a product or delivery of a service
Note 1 to entry: Production process could include specific facilities for health, safety and environment
pollution control.
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3.2
utility
energy carrier necessary for the process and auxiliary
Note 1 to entry: A utility could be generated on-site, off-site, or purchased from a third party.
EXAMPLE Steam, hot water, compressed air, etc.
3.3
utility process
set of utility equipment and distribution
Note 1 to entry: If the utility is purchased from a third party, utility process is only the utility
distribution.
3.4
site
processes within the boundary of the organization
Note 1 to entry: This may include pollution treatment processes and energy recovery, and waste
product.
3.5
building
construction as a whole, including its envelope and all technical building systems, for which
energy may be used to condition the indoor climate, to provide domestic hot water and
illumination and other services related to the use of the building and the activities performed
within the building
Note 1 to entry: The term can refer to the building as a whole or to parts thereof that have been
designed or altered to be used separately.
Note 2 to entry: The building could include its site location and related external environment.
[SOURCE: EN 16247-2:2012, 3.1]
3.6
energy
electricity, fuels, steam, heat, compressed air, and other similar media
Note 1 to entry: For the purposes of this document, energy refers to the various type of energy,
including renewable, which can be purchased, stored, treated, used in equipment or in a process, or
recovered.
[SOURCE: EN ISO 50001, 2018, 3.5]
4 Quality requirements
4.1 Energy auditor
The qualification of an energy auditor is defined in EN 16247-5.
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4.2 Energy audit process
The quality of the energy audit depends on the knowledge of the processes, the site and
available data and information. Close collaboration between the energy auditor and the
organization is essential. When a sampling method is used, the selected samples shall be
representative of the whole audited objects.
NOTE An example energy audit process is shown in Annex A.
5 Elements of the energy audit process
5.1 Preliminary contact
The energy auditor shall obtain a preliminary description of the site and the process from the
organization or from a site visit.
NOTE The preliminary contact can be by telephone, webinar, meeting or other remote interactive
discussions.
The energy auditor shall agree with the organization on the scope and boundary of the energy
audit:
a) processes included in the energy audit;
NOTE A process can be defined as the whole process, part of a process, part of a system or a
component.
b) whether or not outsourced utilities are included in the energy audit;
c) depending of the thoroughness of the energy audit, it is recommended to check if a detailed
energy audit needs to be carried out for specific processes. In this case, reference shall be
made to the relevant standard (see bibliography).
For energy use not directly related to process (e.g. storing, packaging, logistics, offices, research
centre, laboratory and transport), the energy auditor shall agree with the organization the
applicability of EN 16247-2 and EN 16247-4. This choice and the agreed scope shall be clearly
stated in the final energy audit report (5.6).
For each audited process, the energy auditor and organization shall agree, the relevant
personnel, their roles which have an impact on energy consumption, and propose a preliminary
list of data to be collected.
5.2 Start-up meeting
The energy auditor and organization shall agree energy performance indicators which can be
used in the energy audit.
5.3 Collecting data
5.3.1 General
The data collection could be carried out over several stages during an energy audit.
During data collection, the energy auditor shall:
a) verify the data and information provided by the organization (e.g. the power or the number
of pieces of equipment);
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b) obtain any missing data;
c) check the quality and plausibility of the data, and ask for correction if significant mistakes
or inaccuracies are identified .
5.3.2 Information request
In addition to the information requested in EN 16247-1, the energy auditor shall request from
the organization the following:
a) site information including building, boundary and other relevant information;
b) utility processes information;
c) production processes information;
1) product specification;
2) main processes equipment involved in the process (drawings, other relevant technical
data and datasheets)
3) current operational conditions (set points) of utilities and production process;
4) specific condition and constraint for process and environment (security, pollution,
health, etc.);
e) energy sources information.
NOTE 1 The collected data can be based on invoices, contracts, measurements, calculations from given
operating hours and installed capacity (technical characteristics), operation and maintenance documents,
meeting with operations and maintenance personnel, etc.
NOTE 2 See Annex B for examples of data to be collected.
5.3.3 Review of the available data
The energy auditor shall review the information collected for consistency and suitability.
The energy auditor shall assess whether the information provided is sufficient to achieve the
agreed objective.
If data requested is not available, the energy auditor shall define the method to obtain the
necessary information (e.g. measurements, estimates, modelling, etc.).
5.3.4 Preliminary data analysis
The energy auditor shall carry out an analysis of the data collected to:
a) undertake a preliminary analysis of the site's energy balance on the basis of energy bills and
output;
b) identify the relevant variables and static factors;
c) define preliminary significant energy uses;
d) establish the relevant energy performance indicator;
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e) evaluate the distribution of energy consumption on the basis of sub-meter reading, installed
capacity and operating time;
f) if there is sufficient information, establish an initial energy baseline;
g) plan further data collection and measurement to be carried out during field works (5.4).
The energy auditor should develop preliminary energy performance improvement
opportunities.
The energy auditor shall agree with the organization about any data measurement plan on:
1) objectives and parameters;
2) content;
3) required measurement conditions.
NOTE See Annex C for quality data measurement plans.
5.4 Field work
5.4.1 Aim of field work
If necessary, the energy auditor shall carry out additional measurement to:
a) collect any missing data needed for analysis;
b) confirm the suitability of the baseline;
c) confirm the energy consumption, energy balance, relevant variables and static factors;
d) confirm the current operational conditions (set points) of utilities and production processes
and the impact with energy use and consumption;
e) relevant information from identification plates, runtime information, interviews with
operators, etc.
5.4.2 Conduct
The conduct of energy auditor during field work is defined in EN 16247-1:2012, 5.4.2.
5.4.3 Site visits
The energy auditor shall visit the site and audited processes.
NOTE The schedule for site visits is planned during the start-up meeting (5.2).
5.5 Analysis
5.5.1 General
The energy auditor shall:
a) calculate the current energy performance of the process;
b) compare current energy performance against the best available technology benchmarks
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c) compare the current sizing of the process and/or its components, and the corresponding
energy needs;
d) evaluate the optimal quantity of energy and utilities for the process.
5.5.2 Energy balance and breakdown
The energy auditor provides:
a) breakdown the energy consumption by energy type;
b) breakdown the consumption of energy carriers into a company energy structure (for
example main activities, auxiliary services, general services) to cost effectiveness level;
c) breakdown the energy consumption by processes in absolute number and in consistent
energy unit;
If the activity is time varying, it is recommended to establish the energy consumption at
different time periods in relation to the processes.
d) demonstrate an energy balance between energy consumption and energy losses based on
appropriate method.
EXAMPLE Material and energy balance, Sankey diagram, steady-state computer simulation.
If feasible, the energy auditor shall determine the energy consumption without production or
activity (baseload).
The energy balance and breakdown shall be representative of the energy input and energy use.
It shall be clear which is based on measurement, estimation or accurate calculation in
accordance with the level of thoroughness of the energy audit.
5.5.3 Energy performance indicators
The energy auditor and the organization shall discuss and agree on the relevant energy
performance indicators. The analysis shall utilize the agreed energy performance indicators.
NOTE If an energy management system exists, the energy auditor can use the relevant energy
performance indicators detailed in the energy management system.
5.5.4 Identify and evaluate energy performance improvement opportunities
The energy auditor shall propose energy performance improvement opportunities including
one or more of the following:
a) measures in order to reduce or to recover the energy losses;
EXAMPLE Improve insulation, reduction of leakage of compressed air, waste heat recovery, etc.
b) replacement, modification or addition of equipment;
EXAMPLE High efficiency boiler, variable speed motor, energy efficient lighting, etc.
c) more efficient operation and continual optimization;
EXAMPLE Operating procedure, process and utility automation, logistic and layout optimization, set
point adjustment, maintaining the installed equipment to its best performance, etc.
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d) improved maintenance;
EXAMPLE Maintenance planning, instruction of the operation and maintenance staff, etc.
e) deployment of behavioural change programme;
EXAMPLE Training, energy awareness campaigns, etc.
f) improvement of energy management.
EXAMPLE Improvement in metering and monitoring plan, implement energy management system,
etc.
The energy auditor shall identify energy performance improvement opportunities on the basis
of:
1) the equipment's age, condition, how it is operated and managed;
2) the technology of actual equipment in comparison to the most efficient equipment on the
market;
NOTE The energy auditor can use EN 16231:2012 for energy efficiency benchmarking methodology.
3) the planned life time of the processes.
The energy auditor should consider the use of renewable energy sources and combined heat
and power plant.
The energy auditor should propose to categorize the energy performance improvement
opportunities to:
i) people based opportunities (e.g. training, awareness, etc.);
ii) technical based opportunities (e.g. operations, maintenance and replacement of machines);
iii) organizational based opportunities (e.g. structure of organization, responsibilities).
For each of the proposed energy performance improvement opportunity, the energy auditor
shall calculate the expected energy saving (before and after implementing the energy
performance improvement), taking into consideration the appropriate relevant variables and
static factors.
Whenever possible, the energy auditor should consider the applicability of life-cycle cost
analysis.
The energy auditor shall consider the possible tariff change for lower energy cost.
5.6 Report
5.6.1 General
The general requirements for the energy audit report are defined in EN 16247-1:2012, 5.6.1.
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5.6.2 Content of report
The auditor shall give the following information for each of the recommended energy
performance improvement opportunities:
a) description of the existing system or equipment that is affected, its current energy
consumption, energy performance and the reason for the proposal for improvement;
b) description of the proposed energy performance improvement opportunities, the predicted
energy consumption, energy performance, and cost savings;
c) non-energy performance related benefits.
EXAMPLE Non-energy performance improvement related benefit may range from quality
improvement, manufacturing flexibility, reduced maintenance, reduce water consumption, reduce waste,
lower carbon dioxide emissions and improved working condition.
5.7 Final meeting
The requirements for final meeting are defined in EN 16247-1:2012, 5.7.
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Annex A
(informative)
Flow diagram of energy audit for processes
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Annex B
(informative)
Data which could be collected
a) General information on the running of the company
1) products processed/manufactured;
2) daily/annual production;
3) name of the energy official;
4) name of the transport official;
5) operating times;
6) start up and shut downs;
7) shift patterns;
b) Energy sources;
1) inventory of energy sources used on site;
2) daily/monthly/annual consumption;
c) Energy management;
1) structure of energy consumption;
2) metering, maintenance of meters;
3) tariff;
4) invoice amounts (fuels, electricity, water);
5) peak demands management;
6) energy management and monitoring level: which indicators, who monitors them?;
7) operating board;
8) training of staff in the rational use of energy;
d) Transportation, handling of materials and products in the plant;
1) description of fleet;
2) upkeep planning and record book;
3) energy consumption;
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4) handling lines, overhead cranes, helpers, etc.;
5) personnel transportation on the industrial site (excluding the company's circulation
plan);
e) Production process;
1) description, brand of equipment;
2) nature of operation;
i) drying;
ii) heating, cooking, sterilization, polymerization, melting, etc.;
iii) concentration;
iv) thermal separation (distilling column, evaporator, etc.);
v) incineration;
vi) assembly of parts (brazing, welding, etc.);
3) types of machines;
i) crucible furnace, vacuum furnace, removable-cover furnace, open-hearth furnace,
etc.;
ii) tunnel, stack, drying tower, cylinder dryer, etc.;
iii) incinerator, etc.;
4) installed thermal power;
5) nature of the fluid (hot air, steam, hot water, etc.);
6) recoverable condensate;
7) waste heat recovery (flow rates, temperatures, suspended particles, corrosiveness,
critical dew point, etc.) of the exhaust gases/discharged fluids, to evaluate the heat
recovery opportunities;
8) production capacities and output rates (number of parts, m2, kg produced, kg of
evaporated water, etc. according to unit of time);
9) processing method: static, dynamic, batch;
10) products processed: input water content, composition;
11) processing parameters: input fluid temperatures, thermal cycle, application speeds and
temperatures of the fluid, power densities applied, etc. regulation;
12) control;
13) metering;
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14) number of operating hours;
15) annual consumption;
16) consumption specific to processing;
f) Boiler house;
1) description of the facility, installed capacity and its matching data to operational needs;
2) number of boiler;
3) description of operating regime (cascade, backup, shutdown, supplementary, etc.);
4) operating mode;
5) generator: commissioning date, power, brand, type, fluid (hot water, steam, super
heated water, thermal oil, air, etc.), pressure, outgoing temperatures, nominal flow rate,
thermal insulation;
6) control and measurement equipment (fuel, heat carrier, fumes), number of operating
hours, recovery of condensates, steam traps;
7) burner: nature of fuels, age, type, power;
8) presence of and the performance of recuperators, superheaters, economizers, air
heaters;
9) boiler feed water tank volume and temperature;
10) discharge of combustion products;
11) power supply circuits and complementary accessories (circulation pumps, fans, etc.);
12) g
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