EN ISO 18847:2016

SLOVENSKI STANDARD
01-december-2016
1DGRPHãþD
SIST EN 15150:2011
7UGQDELRJRULYD'RORþHYDQMHJRVWRWHGHOFHYSHOHWRYLQEULNHWRY,62
Solid biofuels - Determination of particle density of pellets and briquettes (ISO
18847:2016)
Biogene Festbrennstoffe - Bestimmung der Partikeldichte von Pellets und Briketts (ISO
18847:2016)
Biocombustibles solides - Détermination de la masse volumique unitaire des granulés et
des briquettes (ISO 18847:2016)
Ta slovenski standard je istoveten z: EN ISO 18847:2016
ICS:
17.060 Merjenje prostornine, mase, Measurement of volume,
gostote, viskoznosti mass, density, viscosity
75.160.40 Biogoriva Biofuels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 18847
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2016
EUROPÄISCHE NORM
ICS 75.160.10; 27.190 Supersedes EN 15150:2011
English Version
Solid biofuels - Determination of particle density of pellets
and briquettes (ISO 18847:2016)
Biocombustibles solides - Détermination de la masse Biogene Festbrennstoffe - Bestimmung der
volumique unitaire des granulés et des briquettes (ISO Partikeldichte von Pellets und Briketts (ISO
18847:2016) 18847:2016)
This European Standard was approved by CEN on 18 August 2016.

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
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 18847:2016 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 18847:2016) has been prepared by Technical Committee ISO/TC 238 “Solid
biofuels” in collaboration with Technical Committee CEN/TC 335 “Solid biofuels” 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 March 2017, and conflicting national standards shall
be withdrawn at the latest by March 2017.
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.
This document supersedes EN 15150:2011.
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 18847:2016 has been approved by CEN as EN ISO 18847:2016 without any modification.
INTERNATIONAL ISO
STANDARD 18847
First edition
2016-09-01
Solid biofuels — Determination
of particle density of pellets and
briquettes
Biocombustibles solides — Détermination de la masse volumique
unitaire des granulés et des briquettes
Reference number
ISO 18847:2016(E)
©
ISO 2016
ISO 18847:2016(E)
© ISO 2016, Published in Switzerland
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.
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copyright@iso.org
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ii © ISO 2016 – All rights reserved

ISO 18847:2016(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagents . 1
6 Apparatus . 2
6.1 General apparatus requirements . 2
6.2 Apparatus for pellet testing . 2
6.3 Apparatus for briquette testing . 3
7 Sample preparation . 4
8 Procedure. 5
8.1 Procedure for pellets . 5
8.2 Procedure for briquettes . 6
9 Calculation . 6
10 Precision and bias . 7
10.1 General . 7
10.2 Repeatability . 7
10.3 Reproducibility . 7
11 Test report . 7
Annex A (informative) Stereometric volume estimation . 9
Bibliography .12
ISO 18847:2016(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 (see 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 (see 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.
For an explanation on 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 the following URL: www.iso.org/iso/foreword.html.
The committee responsible for this document is ISO/TC 238, Solid biofuels.
iv © ISO 2016 – All rights reserved

ISO 18847:2016(E)
Introduction
Particle density is a fuel parameter of pellets and briquettes which is often considered when describing
the degree of compaction of the raw material used. Particle density can be highly specific for the
respective type or species of biomass and thus, it also characterizes the material’s general ability
to be compacted. High particle density is often associated with high resistance to abrasion or low
susceptibility towards fracturing during handling and storage. A high particle density also generally
leads to reduced storage volume demands and to a lower filling level in combustion chamber at constant
fuel mass flow. Particle density can also affect the heat transfer rate within the fuel and thus, it can
have an impact on fuel ignition and on the dynamics of gasification.
Apart from the buoyancy method which is described in this International Standard as reference method,
larger particles (briquettes) are sometimes easier tested by simple stereometric means. For internal
laboratory practices, such a procedure is also presented in Annex A. For small particles (pellets), this
procedure is not recommended.
INTERNATIONAL STANDARD ISO 18847:2016(E)
Solid biofuels — Determination of particle density of
pellets and briquettes
1 Scope
This International Standard specifies the method for determining the particle density of compressed
fuels such as pellets or briquettes. Particle density is not an absolute value and conditions for its
determination have to be standardized to enable comparative determinations to be made.
2 Normative references
The following documents, in
...