ISO/FDIS 8933-1
(Main)Ships and marine technology — Energy efficiency — Part 1: Energy efficiency of individual maritime components
Ships and marine technology — Energy efficiency — Part 1: Energy efficiency of individual maritime components
This standard describes generic measuring and calculation methods to evaluate the energy efficiency of individual maritime components. A maritime component is defined as having a single function. Maritime components are grouped according to their functionality to compare the energy efficiency of components which can solve the same task onboard a vessel. The standard is limited to components for which a “unit output” can be clearly defined and which require energy to function. The standard only covers energy consuming components. This standard deals with five types of components: a. Pressure components b. Flow components c. Lighting d. Heating/Cooling components e. Mechanical components The energy efficiency is evaluated using a specified set of global ambient conditions. The energy efficiency is also evaluated using ambient conditions for operation in arctic, tempered or tropical regions.
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FINAL DRAFT
International
Standard
ISO/TC 8
Ships and marine technology —
Secretariat: SAC
Energy efficiency —
Voting begins on:
2024-08-30
Part 1:
Energy efficiency of individual
Voting terminates on:
2024-10-25
maritime components
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
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LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
FINAL DRAFT
International
Standard
ISO/TC 8
Ships and marine technology —
Secretariat: SAC
Energy efficiency —
Voting begins on:
Part 1:
Energy efficiency of individual
Voting terminates on:
maritime components
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 SUPPOR TING DOCUMENTATION.
© ISO 2024
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
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 Reference number
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms. 2
5 Method to evaluate the energy efficiency of individual maritime components . 2
5.1 General .2
5.2 Measuring conditions .3
6 Pumps . 3
6.1 General .3
6.2 Definition of input and output .4
6.3 Definitions of boundaries and media .4
6.4 Calculation method.4
6.5 Measuring method .5
7 Fans . 6
7.1 General .6
7.2 Definition of input and output .7
7.3 Definitions of boundaries and media .7
7.4 Calculation method.7
7.5 Measuring method .8
8 Mechanical power transmission . 9
8.1 Gearboxes .9
8.1.1 General .9
8.1.2 Definition of input and output .10
8.1.3 Definitions of boundaries and media .10
8.1.4 Calculation method .10
8.1.5 Measuring method . 13
9 Heat exchanging . 16
9.1 General .16
9.2 Definition of input and output .16
9.3 Definitions of boundaries and media .16
9.4 Calculation method.17
9.4.1 General .17
9.4.2 Electrical heaters .17
9.5 Measuring method .18
10 Centrifuges . 19
10.1 General .19
10.2 Definition of input and output .19
10.3 Definitions of boundaries and media . 20
10.4 Calculation method. 20
10.5 Measuring method . 20
Bibliography .22
iii
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 document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 8, Ship and marine technology.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
Introduction
Environmental concerns, emission regulations, fuel prices, and emission taxes are increasing the demand for
greater energy efficiency in shipping. In 2013, the International Maritime Organization (IMO) adopted the
[1]
Ship Energy Efficiency Management Plan (SEEMP) to significantly decrease the amount of carbon dioxide
(CO ) emissions by 10 % to 50 % per transport work in international shipping. This strategy refers to a
[14]
pathway of CO emissions reduction which is consistent with the goals of the Paris Agreement, alongside
[15]
the United Nations 2030 Agenda for Sustainable Development.
Standardizing methods to evaluate energy efficiency in the maritime sector interface is valuable for a range
of different stakeholders, including:
— shipowners who are looking to buy maritime systems to comply with IMO SEEMP initiatives;
— maritime equipment and engine manufacturers who ar
...
ISO/TC 8
Secretariat: SAC
Date: 2024-02-2108-15
Ships and marine technology – — Energy efficiency – —
Part 1:
Energy efficiency of individual maritime components
FDIS stage
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
EmailE-mail: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2023 – All rights reserved
ii
Contents
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms . 2
5 Method to evaluate the energy efficiency of individual maritime components . 2
5.1 General . 2
5.2 Measuring conditions . 4
6 Pumps . 4
6.1 General . 4
6.2 Definition of input and output . 4
6.3 Definitions of boundaries and media . 4
6.4 Calculation method . 5
6.5 Measuring method . 6
7 Fans . 8
7.1 General . 8
7.2 Definition of input and output . 8
7.3 Definitions of boundaries and media . 8
7.4 Calculation method . 9
7.5 Measuring method . 10
8 Mechanical power transmission . 12
8.1 Gearboxes . 12
9 Heat exchanging . 19
9.1 General . 19
9.2 Definition of input and output . 20
9.3 Definitions of boundaries and media . 20
9.4 Calculation method . 21
9.5 Measuring method . 22
10 Centrifuges . 24
10.1 General . 24
10.2 Definition of input and output . 24
10.3 Definitions of boundaries and media . 24
10.4 Calculation method . 25
10.5 Measuring method . 26
Bibliography . 28
iii
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 documentsdocument should be noted. This document was drafted in accordance with the editorial rules
of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Field Code Changed
Attention is drawnISO draws attention to the possibility that some of the elementsimplementation of this
document may beinvolve the subjectuse of (a) patent(s). ISO takes no position concerning the evidence,
validity or applicability of any claimed patent rights in respect thereof. As of the date of publication of this
document, ISO had not received notice of (a) patent(s) which may be required to implement this document.
However, implementers are cautioned that this may not represent the latest information, which may be
obtained from the patent database available at www.iso.org/patents. 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 (see ).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
Field Code Changed
This document was prepared by Technical Committee ISO/TC 8, Ship and marine technology.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv © ISO 2023 – All rights reserved
iv
Introduction
Environmental concerns, emission regulations, fuel prices, and emission taxes are increasing the demand for
greater energy efficiency in shipping. In 2013, the International Maritime Organization (IMO) adopted the Ship
[1]
Energy Efficiency Management Plan (SEEMP) to significantly decrease the amount of carbon dioxide (CO2)
emissions by 10 % to 50 % per transport work in international shipping. This strategy refers to a pathway of
[14 ]
CO emissions reduction which is consistent with the goals of the Paris Agreement, , alongside the United
[15 ]
Nations 2030 Agenda for Sustainable Development. .
Standardizing methods to evaluate energy efficiency in the maritime sector interface is valuable for a range of
different stakeholders, including:
— — shipowners who are looking to buy maritime systems to comply with IMO SEEMP initiatives;
— — maritime equipment and engine manufacturers who are responsible for the design and production of
ship systems;
— — governments that are committed to environmental regulations and environmental targets such as the
“levels of ambition” adopted by IMO.
The purpose of this document is to improve energy efficiency in ships by providing more energy efficient
options that can be considered when replacing malfunctioning components throughout the ship lifetime.
This document allows shipowners and shipyard workers to objectively identify the most energy-efficient
components for retrofits, as well as newbuilds.
The document provides a method for comparing energy performance on an objective basis to prevent energy
loss, and to improve cost-efficiency, and improve the environmental conditions during maritime transport.
TheThis document makes it possible for users to compare the energy efficiency of different individual
maritime components based on a standardized method to measure and calculate the values.
It is a widely established that the usual combination of best efficient single systems on board do not lead in
sum to the most efficient ship. It is common practice that owners instruct shipyards to meet the criteria for an
optimized operating point of the respective ship system during the design phase (new build or
reconstruction).
Accordingly, a shipyard checks before installation that each single system or component meets good energy
efficiency values. It is not possible to calculate the ship's overall efficiency will if the operating conditions are
not standardized.
An example of a system or component where the efficiency depends on the operational conditions is an engine
room ventilation without a given fan speed control system. If fan is designed and optimized for the tropical
zone and the ship is operated under North Atlantic conditions, less power is necessary during winter times.
Owing to the absence of a controller, the fan rotation speed cannot be adjusted. In sum, every single fan can
operate efficiently on a test bed. An efficient performance is questionable if the ship sails under different
operational conditions than what it is designed for.
To raise the overall operational energy efficiency of a ship in different operational conditions, the overall ship-
individual combined system efficiency check should be performed. In addition, manufacturers, and operators
should take into account the possible variations between test bed conditions and onboard test conditions
when developing individual components and systems.
v
DRAFT INTERNATIONAL STANDARD ISO/DIS 8933-1:2023(E)
Ships and marine Technology –technology — Energy efficiency —
Part 1:
Energy efficiency of individual maritime components
1 Scope
This document describesspecifies generic measuring and calculation methods to evaluate the energy
efficiency of individual maritime components installed onboardon board ships, vessels for inland navigation
Commented [BT1]: Not used as a compound modifier
or offshore structures. This document only covers energy consuming components for which a “unit output” here.
can be clearly defined and which require energy to function.
This document only covers the major energy consuming components of a typical ship. It It does not cover the
propulsion component of the ship (e.g. the propeller).
does not cover the propulsion component of the ship (e.g propeller).
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology 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
energy efficiency
ratio or other quantitative relationship between an output (3.4) of performance, service, goods or energy, and
an input (3.3) of energy
EXAMPLE Efficiency conversion energy; energy required/energy used; output/input; theoretical energy used to
operate/energy used to operate.
Note 1 to entry: Both input and outpu
...
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