prEN ISO 18134-3
(Main)Solid biofuels - Determination of moisture content - Oven dry method - Part 3: Moisture in general analysis sample (ISO/DIS 18134-3:2022)
Solid biofuels - Determination of moisture content - Oven dry method - Part 3: Moisture in general analysis sample (ISO/DIS 18134-3:2022)
ISO 18134-3:2015 describes the method of determining the moisture in the analysis test sample by drying in an oven. It is intended to be used for general analysis samples in accordance with EN 14780. The method described in this part of ISO 18134-3:2015 is applicable to all solid biofuels. The moisture content of solid biofuels (as received) is always reported based on the total mass of the test sample (wet basis).
Since biofuels in small particle size are very hygroscopic, their moisture content will change with humidity in the atmosphere and therefore, the moisture of the test portion is determined simultaneously with determination of for example calorific value, carbon content, and nitrogen content.
NOTE The term moisture content when used with biomass materials can be misleading since untreated biomass frequently contains varying amounts of volatile compounds (extractives) which can evaporate when determining the moisture content by oven drying (see References [1] and [2]).
Biogene Festbrennstoffe – Bestimmung des Wassergehaltes – Ofentrocknung – Teil3: Wassergehalt in allgemeinen Analysenproben (ISO/DIS 18134-3:2022)
Biocombustibles solides - Dosage de la teneur en humidité - Méthode de séchage à l'étuve - Partie 3: Humidité de l'échantillon pour analyse générale (ISO/DIS 18134-3:2022)
L'ISO 18134-3:2015 décrit la méthode de détermination de l'humidité de l'échantillon pour analyse par séchage à l'étuve. Elle est destinée à être utilisée sur des échantillons pour analyse générale conformément à l'EN 14780. La méthode décrite dans la présente partie de l'ISO 18134-3:2015est applicable à l'ensemble des biocombustibles solides. La teneur en humidité des biocombustibles solides (à réception) est toujours rapportée à la masse totale de l'échantillon pour essai (en conditions humides).
Les biocombustibles constitués de particules de petite taille étant très hygroscopiques, leur teneur en humidité varie en fonction de l'humidité de l'atmosphère et, par conséquent, l'humidité de la prise d'essai est établie simultanément avec la détermination, par exemple, du pouvoir calorifique et de la teneur en carbone ou en azote.
NOTE Lorsqu'il est employé dans un contexte de matériaux de biomasse, le terme « teneur en humidité » peut prêter à confusion, car la biomasse non traitée contient souvent des quantités variables de composés volatils (extraits) susceptibles de s'évaporer lors de la détermination de la teneur en humidité par séchage à l'étuve (voir Références [1] et [2]).
Trdna biogoriva - Določevanje vlage - Metoda sušenja v peči - 3. del: Vlaga v splošnem analiznem vzorcu (ISO/DIS 18134-3:2022)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN ISO 18134-3:2022
01-september-2022
Trdna biogoriva - Določevanje vlage - Metoda sušenja v peči - 3. del: Vlaga v
splošnem analiznem vzorcu (ISO/DIS 18134-3:2022)
Solid biofuels - Determination of moisture content - Oven dry method - Part 3: Moisture
in general analysis sample (ISO/DIS 18134-3:2022)Biogene Festbrennstoffe – Bestimmung des Wassergehaltes – Ofentrocknung – Teil3:
Wassergehalt in allgemeinen Analysenproben (ISO/DIS 18134-3:2022)
Biocombustibles solides - Dosage de la teneur en humidité - Méthode de séchage à
l'étuve - Partie 3: Humidité de l'échantillon pour analyse générale (ISO/DIS 18134-
3:2022)Ta slovenski standard je istoveten z: prEN ISO 18134-3
ICS:
75.160.40 Biogoriva Biofuels
oSIST prEN ISO 18134-3:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN ISO 18134-3:2022
DRAFT INTERNATIONAL STANDARD
ISO/DIS 18134-3
ISO/TC 238 Secretariat: SIS
Voting begins on: Voting terminates on:
2022-06-16 2022-09-08
Solid biofuels — Determination of moisture content —
Oven dry method —
Part 3:
Moisture in general analysis sample
Biocombustibles solides — Méthode de détermination de la teneur en humidité — Méthode de séchage à
l'étuve —Partie 3: Humidité de l'échantillon pour analyse générale
ICS: 27.190; 75.160.40
This document is circulated as received from the committee secretariat.
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ISO/DIS 18134-3:2022(E)
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oSIST prEN ISO 18134-3:2022
ISO/DIS 18134-3:2022(E)
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oSIST prEN ISO 18134-3:2022
ISO/DIS 18134-3:2022(E)
Contents Page
Foreword ........................................................................................................................................................................................................................................iv
1 Scope ................................................................................................................................................................................................................................. 1
2 Normative references ..................................................................................................................................................................................... 1
3 Terms and definitions .................................................................................................................................................................................... 1
4 Principle ........................................................................................................................................................................................................................ 1
5 Apparatus .................................................................................................................................................................................................................... 2
6 Sample preparation ..........................................................................................................................................................................................2
6.1 General ........................................................................................................................................................................................................... 2
6.2 Size of test portion .............................................................................................................................................................................. 2
7 Procedure ....................................................................................................................................................................................................................3
8 Calculation .................................................................................................................................................................................................................. 3
9 Performance characteristics .................................................................................................................................................................. 3
9.1 Repeatability ............................................................................................................................................................................................ 3
9.2 Reproducibility ....................................................................................................................................................................................... 3
10 Test report .................................................................................................................................................................................................................. 4
Bibliography ................................................................................................................................................................................................................................ 5
iii© ISO 2022 – All rights reserved
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oSIST prEN ISO 18134-3:2022
ISO/DIS 18134-3:2022(E)
Foreword
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different types of ISO documents should be noted. This document was drafted in accordance with the
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www.iso.org/iso/foreword.html.This document was prepared by Technical Committee [or Project Committee] ISO/TC 238.
This second edition cancels and replaces the first edition (ISO 18134-3:2015), which has been
technically revised.The main changes compared to the previous edition are as follows:
— The revision is required in order to add a cautionary statement to avoid gain or loss of moisture
during sample preparation; to update references, and to make other minor editorial corrections.
A list of all parts in the ISO 18134 series can be found on the ISO website.Any feedback or questions on this document should be directed to the user’s national standards bod
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