Solid biofuels - Determination of water sorption and its effect on durability of thermally treated biomass fuels - Part 1: Pellets (ISO 23343-1:2021)

This document describes a method for determination of sorption of graded thermally treated and densified biomass fuels such as classified in ISO/TS 17225-8.
Apart from pelletized materials as described in ISO/TS 17225-8, the method can also be applied to non-compressed or non-densified thermally treated biomass as specified in ISO 17225-1 Table 14 and Table 15.

Biogene Festbrennstoffe - Bestimmung der Sorption und deren Auswirkung auf die Dauerhaftigkeit von thermisch behandelten Brennstoffen aus Biomasse - Teil 1: Pellets (ISO 23343-1:2021)

Dieses Dokument legt ein Verfahren zur Bestimmung der Wasseraufnahme in einer Laborumgebung fest und stellt ein Maß dafür zur Verfügung, wie die Festigkeit infolge des Eintauchens in Wasser beeinflusst wird. Die Verringerung der Festigkeit nach dem Eintauchen wird als Differenz zwischen der Festigkeit der Probe im Anlieferungszustand und der Festigkeit des benetzten Produkts berechnet.

Biocombustibles solides - Détermination de la sorption d'eau et de son influence sur la durabilité des combustibles de biomasse traités thermiquement - Partie 1: Granulés (ISO 23343-1:2021)

Trdna biogoriva - Določevanje sorpcije vode in njenega vpliva na trajnost toplotno obdelanih goriv iz biomase - 1. del: Peleti (ISO 23343-1:2021)

General Information

Status
Published
Public Enquiry End Date
29-Oct-2020
Publication Date
14-Jun-2021
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
27-May-2021
Due Date
01-Aug-2021
Completion Date
15-Jun-2021

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SLOVENSKI STANDARD
SIST EN ISO 23343-1:2021
01-julij-2021

Trdna biogoriva - Določevanje sorpcije vode in njenega vpliva na trajnost toplotno

obdelanih goriv iz biomase - 1. del: Peleti (ISO 23343-1:2021)

Solid biofuels - Determination of water sorption and its effect on durability of thermally

treated biomass fuels - Part 1: Pellets (ISO 23343-1:2021)
Biogene Festbrennstoffe - Bestimmung der Sorption und deren Auswirkung auf die

Dauerhaftigkeit von thermisch behandelten Brennstoffen aus Biomasse - Teil 1: Pellets

(ISO 23343-1:2021)

Biocombustibles solides - Détermination de la sorption d'eau et de son influence sur la

durabilité des combustibles de biomasse traités thermiquement - Partie 1: Granulés (ISO

23343-1:2021)
Ta slovenski standard je istoveten z: EN ISO 23343-1:2021
ICS:
75.160.40 Biogoriva Biofuels
SIST EN ISO 23343-1:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN ISO 23343-1:2021
---------------------- Page: 2 ----------------------
SIST EN ISO 23343-1:2021
EN ISO 23343-1
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2021
EUROPÄISCHE NORM
ICS 27.190; 75.160.40
English Version
Solid biofuels - Determination of water sorption and its
effect on durability of thermally treated biomass fuels -
Part 1: Pellets (ISO 23343-1:2021)

Biocombustibles solides - Détermination de la sorption Biogene Festbrennstoffe - Bestimmung der Sorption

d'eau et de son influence sur la durabilité des und deren Auswirkung auf die Dauerhaftigkeit von

combustibles de biomasse traités thermiquement - thermisch behandelten Brennstoffen aus Biomasse -

Partie 1: Granulés (ISO 23343-1:2021) Teil 1: Pellets (ISO 23343-1:2021)
This European Standard was approved by CEN on 1 May 2021.

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, 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 23343-1:2021 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 23343-1:2021
EN ISO 23343-1:2021 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

---------------------- Page: 4 ----------------------
SIST EN ISO 23343-1:2021
EN ISO 23343-1:2021 (E)
European foreword

This document (EN ISO 23343-1:2021) 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 November 2021, and conflicting national standards

shall be withdrawn at the latest by November 2021.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

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, 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 the

United Kingdom.
Endorsement notice

The text of ISO 23343-1:2021 has been approved by CEN as EN ISO 23343-1:2021 without any

modification.
---------------------- Page: 5 ----------------------
SIST EN ISO 23343-1:2021
---------------------- Page: 6 ----------------------
SIST EN ISO 23343-1:2021
INTERNATIONAL ISO
STANDARD 23343-1
First edition
2021-04
Solid biofuels — Determination
of water sorption and its effect
on durability of thermally treated
biomass fuels —
Part 1:
Pellets
Biocombustibles solides — Détermination de la sorption d'eau et de
son influence sur la durabilité des combustibles de biomasse traités
thermiquement —
Partie 1: Granulés
Reference number
ISO 23343-1:2021(E)
ISO 2021
---------------------- Page: 7 ----------------------
SIST EN ISO 23343-1:2021
ISO 23343-1:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

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 © ISO 2021 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 23343-1:2021
ISO 23343-1:2021(E)
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 Sampling and test sample preparation ......................................................................................................................................... 3

7 Procedure..................................................................................................................................................................................................................... 3

7.1 Testing the as-received moisture content and durability .................................................................................. 3

7.2 Sieving procedure ................................................................................................................................................................................. 3

7.3 Wetting of the sub-samples .......................................................................................................................................................... 4

7.4 Determination of moisture content and durability of the post-immersion sub-samples ...... 4

8 Calculations................................................................................................................................................................................................................ 5

9 Performance characteristics .................................................................................................................................................................... 5

10 Test report ................................................................................................................................................................................................................... 5

Annex A (informative) Performance data ....................................................................................................................................................... 7

Bibliography ................................................................................................................................................................................................................................ 9

© ISO 2021 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST EN ISO 23343-1:2021
ISO 23343-1:2021(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 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 238, Solid biofuels, in collaboration with

the European Committee for Standardization (CEN) Technical Committee CEN/TC 335, Solid biofuels, in

accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).

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 2021 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 23343-1:2021
ISO 23343-1:2021(E)
Introduction

Thermally treated biomass fuels, particularly in compressed form, are increasingly considered as a

replacement of fossil coal or for co-firing in large energy plants for production of heat and/or power.

Compressed biomass fuels which are not thermally treated easily absorb moisture; this compromises

the durability and generates fines. Thermally treated biomass fuels vary in their affinity to absorb

moisture (absorption and/or adsorption – here collectively called sorption) depending on the extent

and/or type of thermal treatment, feedstock used to make the product, compression, potential additives

used, etc. For this purpose, it is important to understand the degree to which thermally treated

compressed solid biofuels are resistant to moisture uptake and the degree to which they maintain

durability when exposed to moisture, primarily in the form of rain during outdoor storage.

Thermally treated biomass fuel such as pellets or briquettes may be classified based on these

characteristics as suitable or unsuitable to be handled and stored under conditions with limited or no

weather protection. This document was developed specifically for the classification of pellets and is not

intended to be applicable to other forms of densified fuel (e.g. briquettes). It is intended that other parts

will be developed as necessary to apply these principles to other forms of thermally treated biomass

fuels.

It should be noted that in large-scale storage of thermally treated biomass fuels the degree of

wetting will likely vary within the storage. Therefore, this document is not intended to be used to

draw conclusions on the average degree of wetting for any particular storage, but rather provides an

indication of the degree to which durability and/or moisture content can be affected under worst case

conditions. This method can be used for comparative purposes towards other pelletized thermally

treated biomass fuels.
© ISO 2021 – All rights reserved v
---------------------- Page: 11 ----------------------
SIST EN ISO 23343-1:2021
---------------------- Page: 12 ----------------------
SIST EN ISO 23343-1:2021
INTERNATIONAL STANDARD ISO 23343-1:2021(E)
Solid biofuels — Determination of water sorption and its
effect on durability of thermally treated biomass fuels —
Part 1:
Pellets
1 Scope

This document specifies a method for the determination of water sorption in a laboratory setting and

provides a measure for how the durability is impacted as a result of immersion in water. Post-immersion

durability reduction is calculated as the difference between the durability of the as-received sample

and the durability of the wetted product.
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.

ISO 3310-2, Test sieves — Technical requirements and testing — Part 2: Test sieves of perforated metal

plate
ISO 14780, Solid biofuels — Sample preparation
ISO 16559, Solid biofuels — Terminology, definitions and descriptions

ISO 17831-1, Solid biofuels — Determination of mechanical durability of pellets and briquettes — Part 1:

Pellets

ISO 18134-1, Solid biofuels — Determination of moisture content — Oven dry method — Part 1: Total

moisture — Reference method

ISO 18134-2, Solid biofuels — Determination of moisture content — Oven dry method — Part 2: Total

moisture — Simplified method
ISO 18135, Solid Biofuels — Sampling

ISO 18846, Solid biofuels — Determination of fines content in quantities of pellets

ISO 21945, Solid biofuels — Simplified sampling method for small scale applications

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 16559 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following add

...

SLOVENSKI STANDARD
oSIST prEN ISO 23343-1:2020
01-oktober-2020

Trdna biogoriva - Določevanje sorpcije vode in njenega vpliva na trajnost toplotno

obdelanih goriv iz biomase - 1. del: Peleti (ISO/DIS 23343-1:2020)

Solid biofuels - Determination of water sorption and its effect on durability of thermally

treated biomass fuels - Part 1: Pellets (ISO/DIS 23343-1:2020)
Biogene Festbrennstoffe - Bestimmung der Sorption und deren Auswirkung auf die

Dauerhaftigkeit von thermisch behandelten Brennstoffen aus Biomasse - Teil 1: Pellets

(ISO/DIS 23343-1:2020)

Biocombustibles solides - Détermination de la sorption d'eau et de son influence sur la

durabilité des combustibles de biomasse traités thermiquement - Partie 1: Granulés

(ISO/DIS 23343-1:2020)
Ta slovenski standard je istoveten z: prEN ISO 23343-1
ICS:
75.160.40 Biogoriva Biofuels
oSIST prEN ISO 23343-1:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN ISO 23343-1:2020
---------------------- Page: 2 ----------------------
oSIST prEN ISO 23343-1:2020
DRAFT INTERNATIONAL STANDARD
ISO/DIS 23343-1
ISO/TC 238 Secretariat: SIS
Voting begins on: Voting terminates on:
2020-08-05 2020-10-28
Solid biofuels — Determination of water sorption and its
effect on durability of thermally treated biomass fuels —
Part 1:
Pellets
ICS: 75.160.40; 27.190
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 23343-1:2020(E)
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. ISO 2020
---------------------- Page: 3 ----------------------
oSIST prEN ISO 23343-1:2020
ISO/DIS 23343-1:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

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 © ISO 2020 – All rights reserved
---------------------- Page: 4 ----------------------
oSIST prEN ISO 23343-1:2020
ISO/DIS 23343-1:2020(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Principle ........................................................................................................................................................................................................................ 2

5 Apparatus ..................................................................................................................................................................................................................... 2

5.1 Sieve ................................................................................................................................................................................................................. 2

5.2 Collecting pan ........................................................................................................................................................................................... 2

5.3 Water bath .................................................................................................................................................................................................. 2

5.4 Immersion container(s) and Immersion container cover(s) .......................................................................... 2

5.5 Flat drying trays ..................................................................................................................................................................................... 3

5.6 Drying oven ................................................................................................................................................................................................ 3

5.7 Balance ........................................................................................................................................................................................................... 3

6 Sampling and test sample preparation ......................................................................................................................................... 3

7 Procedure..................................................................................................................................................................................................................... 3

7.1 Testing the as-received moisture content and durability .................................................................................. 3

7.2 Sieving procedure ................................................................................................................................................................................. 3

7.3 Wetting of the sub-samples .......................................................................................................................................................... 3

7.4 Determination of moisture content and durability of the post-immersion sub-samples ...... 4

8 Calculations................................................................................................................................................................................................................ 4

9 Performance characteristics .................................................................................................................................................................... 5

10 Test report ................................................................................................................................................................................................................... 5

Annex A (informative) Performance data ....................................................................................................................................................... 6

Bibliography ................................................................................................................................................................................................................................ 8

© ISO 2020 – All rights reserved iii
---------------------- Page: 5 ----------------------
oSIST prEN ISO 23343-1:2020
ISO/DIS 23343-1:2020(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 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 238, Solid biofuels.

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 2020 – All rights reserved
---------------------- Page: 6 ----------------------
oSIST prEN ISO 23343-1:2020
ISO/DIS 23343-1:2020(E)
Introduction

Thermally treated biomass fuels, particularly in compressed form, are increasingly considered as a

replacement of fossil coal or for co-firing in large energy plants for production of heat and/or power.

Compressed biomass fuels which are not thermally treated easily absorb moisture; this compromises

the durability and generates fines. Thermally treated biomass fuels vary in their affinity to absorb

moisture (absorption and/or adsorption – here collectively called sorption) depending on the extent

and/or type of thermal treatment, feedstock used to make the product, compression, potential additives

used, etc. For this purpose, it is important to understand the degree to which thermally treated

compressed solid biofuels are resistant to moisture uptake and the degree to which they maintain

durability when exposed to moisture, primarily in the form of rain during outdoor storage.

Thermally treated biomass fuel pellets may be classified based on these characteristics as suitable or

unsuitable to be handled and stored under conditions with limited or no weather protection. It should

be noted that in large-scale handling and storage of biofuels not all layers of the material are necessarily

exposed to severe wetting.
© ISO 2020 – All rights reserved v
---------------------- Page: 7 ----------------------
oSIST prEN ISO 23343-1:2020
---------------------- Page: 8 ----------------------
oSIST prEN ISO 23343-1:2020
DRAFT INTERNATIONAL STANDARD ISO/DIS 23343-1:2020(E)
Solid biofuels — Determination of water sorption and its
effect on durability of thermally treated biomass fuels —
Part 1:
Pellets
1 Scope

This method allows for the determination of water sorption in a laboratory setting and provides a

measure for how the durability is impacted as a result of immersion in water. Post-immersion durability

reduction is calculated as the difference between the durability of the as-received sample and the

durability of the wetted product.

A post-immersion durability reduction of 0 means there was no change to the durability of the

thermally treated pelletized fuel as a result of wetting, whereas a post-immersion durability reduction

of 3 indicate that the durability dropped by three percentage points as a result of wetting.

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.

ISO 14780, Solid biofuels — Sample preparation
ISO 16559, Solid biofuels — Terminology, definitions and descriptions

ISO 18134-1, Solid biofuels — Determination of moisture content — Oven dry method — Part 1: Total

moisture — Reference method

ISO 18134-2, Solid biofuels — Determination of moisture content — Oven dry method — Part 2: Total

moisture — Simplified method

ISO 17831-1, Solid biofuels — Determination of mechanical durability of pellets and briquettes —

Part 1: Pellets
ISO 18135, Solid Biofuels — Sampling

ISO 21945, Solid biofuels — Simplified sampling method for small scale applications

ISO 18846-2, Solid biofuels — Determination of fines content in samples of pellets – Part 2: Simplified Method

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 16559 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 http:// www .electropedia .org/
© ISO 2020 – All rights reserved 1
---------------------- Page: 9 ----------------------
oSIST prEN ISO 23343-1:2020
ISO/DIS 23343-1:2020(E)
3.1
post-immersion

a basis of measurement whereby the material tested has been immersed in water in accordance with

ISO 23343 prior to the test being conducted. Examples include moisture content post-immersion (M )

and durability post-immersion (DU )
3.2
post-immersion durability reduction
DUR

measure of the drop in the durability of thermally treated biomass fuel pellets after immersion in water

using this test procedure
3.3
water sorption
sorp

gain or loss of water/moisture by solid biofuels through absorption and/or adsorption when exposed to

water or varying levels of humidity
4 Principle
For this test method, the as-received
...

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