ISO 8933-1:2024
(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 document specifies generic measuring and calculation methods to evaluate the energy efficiency of individual maritime components installed on board ships, vessels for inland navigation or offshore structures. This document only covers energy consuming components for which a “unit output” can be clearly defined and which require energy to function. This document only covers the major energy consuming components of a typical ship. It does not cover the propulsion component of the ship (e.g. the propeller).
Navires et technologie maritime — Éfficacité énergétique — Partie 1: Efficacité énergétique des éléments maritimes individuels
General Information
Standards Content (Sample)
International
Standard
ISO 8933-1
First edition
Ships and marine technology —
2024-11
Energy efficiency —
Part 1:
Energy efficiency of individual
maritime components
Navires et technologie maritime — Éfficacité énergétique —
Partie 1: Efficacité énergétique des éléments maritimes
individuels
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 .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 .3
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 .6
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 .15
9.1 General . 15
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 .19
10 Centrifuges .20
10.1 General . 20
10.2 Definition of input and output . 20
10.3 Definitions of boundaries and media . 20
10.4 Calculation method.21
10.5 Measuring method .21
Bibliography .23
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 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 environmental conditions during maritime transport. This 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 duri
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.