oSIST prEN ISO 17829:2024
(Main)Solid Biofuels - Determination of length and diameter of pellets (ISO/DIS 17829:2024)
Solid Biofuels - Determination of length and diameter of pellets (ISO/DIS 17829:2024)
This document specifies methods for the determination of diameter and length of pellets. Concerning the pellet length methods for the determination of fractions of specified length, such as oversized particles and particles below 10 mm and for determination of the average length are included.
Biogene Festbrennstoffe - Bestimmung der Länge und des Durchmessers von Pellets (ISO/DIS 17829:2024)
Biocombustibles solides - Détermination de la longueur et du diamètre des granulés (ISO/DIS 17829:2024)
Trdna biogoriva - Določevanje dolžine in premera peletov (ISO/DIS 17829:2024)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2024
Trdna biogoriva - Določevanje dolžine in premera peletov (ISO/DIS 17829:2024)
Solid Biofuels - Determination of length and diameter of pellets (ISO/DIS 17829:2024)
Biogene Festbrennstoffe - Bestimmung der Länge und des Durchmessers von Pellets
(ISO/DIS 17829:2024)
Biocombustibles solides - Détermination de la longueur et du diamètre des granulés
(ISO/DIS 17829:2024)
Ta slovenski standard je istoveten z: prEN ISO 17829
ICS:
75.160.40 Biogoriva Biofuels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
International
Standard
ISO/DIS 17829
ISO/TC 238
Solid Biofuels — Determination of
Secretariat: SIS
length and diameter of pellets
Voting begins on:
Biocombustibles solides — Détermination de la longueur et du
2024-09-17
diamètre des granulés
Voting terminates on:
ICS: 27.190; 75.160.40 2024-12-10
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
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.
Reference number
ISO/DIS 17829:2024(en)
DRAFT
ISO/DIS 17829:2024(en)
International
Standard
ISO/DIS 17829
ISO/TC 238
Solid Biofuels — Determination of
Secretariat: SIS
length and diameter of pellets
Voting begins on:
Biocombustibles solides — Détermination de la longueur et du
diamètre des granulés
Voting terminates on:
ICS: 27.190; 75.160.40
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2024
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: +41 22 749 01 11
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 17829:2024(en)
ii
ISO/DIS 17829:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus . 2
6 Sample preparation . 4
6.1 General .4
6.2 Determination of pellet diameter .4
6.3 Determination of pellet length and pellet length fractions .4
7 Procedure . 4
7.1 Determination of the parameters to be analysed .4
7.2 Determination of the pellet diameter class .5
7.3 Measuring the length of an individual pellet .5
7.3.1 Option A: Measuring the length of an individual pellet with a measuring block
(5.2) .5
7.3.2 Option B: Measuring the length of an individual pellet with a caliper .5
7.4 Determination of the number of pellets above maximum length .6
7.5 Determination of the share of pellets > 40 mm .6
7.6 Determination of the share of pellets of any other specified length, e. g. pellets < 10 mm .6
7.7 Determination of the average length of pellets .6
8 Calculations . 7
8.1 Pellet diameter class .7
8.2 Share of a specified fraction of pellets .7
8.2.1 Share of fractions including coarse pellet fines .7
8.2.2 Share of pellets > 40 mm and other fractions without coarse pellet fines .8
8.3 Average pellet length .8
9 Performance characteristics . 8
10 Test report . 9
Annex A (informative) Devices for the determination of the length of pellets with a diameter of
8 mm or above . . 10
Annex B (informative) Comparative studies for the determination of the pellet length .12
iii
ISO/DIS 17829:2024(en)
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 WTO principles in the Technical Barriers to Trade (TBT)
see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 238, Solid biofuels.
This document replaces ISO 17829:2015, which is technically revised. The main changes compared to the
previous document are:
— Extended scope which now includes the determination of specified pellet length fractions, e.g.
pellets < 10 mm as specified in ISO 17225-2;
— Description of a procedure to determine fractions of specified length including particles below 10 mm;
— Added definition of pellet length;
— Modified drawings for measuring pellet length;
— Changed sizes of the test portions for the determination of the pellet length and fractions of specific
length including pellets > 40 mm;
— Changed procedures for measuring pellet length with two options using a device for measuring the pellet
length or a caliper;
— Added informative Annex with a device for measuring the length of pellets with other diameters than 6 mm;
— Added informative Annex with comparing data for the determination of pellet length with different methods
— Updated references
— Modified drawings and the definition of pellet length to avoid potential ambiguity.
iv
ISO/DIS 17829:2024(en)
Introduction
Pellets with a length and diameter outside the specification can cause problems with transportation in screw
conveyors, silo outlets, and burner feeding systems. ISO 17225-1, ISO 17225-2, ISO 17225-6, and ISO 17225-8
stipulate dimensions of pellets. The average pellet length and the amount of pellets of specific size fractions
can influence the bulk density and the combustion behaviour.
This document describes procedures for determining the diameter class according to ISO 17225-2 as well as
the length and diameter of pellets and the shares of specified pellet length fractions.
v
DRAFT International Standard ISO/DIS 17829:2024(en)
Solid Biofuels — Determination of length and diameter of pellets
1 Scope
This document specifies the methods for the determination of diameter and length of pellets. Concerning
the pellet length, methods for the determination of fractions of specified lengths, such as pellets > 40 mm
and particles below 10 mm and for determination of the average length are included.
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
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.