ISO 17225-5:2026 PDF

Name: ISO 17225-5:2026 — Solid biofuels — Fuel specifications and classes — Part 5: Graded firewood
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Solid biofuels — Fuel specifications and classes — Part 5: Graded firewood

Название (английский):

ISO 17225-5:2026

Solid biofuels — Fuel specifications and classes — Part 5: Graded firewood

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 11
Дата публикации:: 9 апреля 2026 г.
Издание:: ISO IS 17225 edition 3 version 1
ICS:: 27.190

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Описание (английский):

This document specifies the fuel quality classes and specifications of graded firewood. This document applies only to firewood produced from the following raw materials (see ISO 17225-1:2021, Table 1): 1.1.1 Whole trees without roots; 1.1.3 Stemwood; 1.1.4 Logging residues (thick branches, tops, etc.); 1.2.1 Chemically untreated by-products

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 17225-5:2026 is an internationally recognized standard developed by the International Organization for Standardization (ISO), specifically focusing on solid biofuels. This part of the ISO 17225 series defines the fuel quality classes and specifications for graded firewood. It ensures consistency in classification and performance, providing clear requirements for firewood intended for use in residential, small commercial, and public building applications. The standard aims to facilitate efficient fuel trading, promote transparent communication between producers and users, and support regulatory compliance in the bioenergy sector.

Key Topics

Scope of Application

Applies to graded firewood produced from:
- Whole trees without roots
- Stemwood
- Logging residues such as thick branches and tops
- Chemically untreated by-products and residues from wood processing

Fuel Quality Classification

Establishes three property classes: A1, A2, and B
Classes are distinguished by raw material source, permitted moisture content, diameter, length, and visible quality attributes

Dimensions and Specifications

Uniform length (commonly 15–100 cm) and specified diameter range
Clearly defines requirements for moisture content, including guidelines for measurement and conversion between wet and dry basis

Measurement and Sampling

Outlines recommended methods for firewood measurement (solid, stacked, and loose cubic meters)
Sampling and analysis methods are referenced from related ISO standards, ensuring accuracy and repeatability

Energy Content and Declaration

Guidelines for calculating and declaring energy density based on net calorific value and bulk density
Emphasizes the importance of providing accurate information on energy content, moisture, and wood species

Quality Control

Requirements for split volume proportion, absence of visible decay, and smoothness of cut-off surfaces
Quality class A1 is the most stringent, designed for household stoves and fireplaces

Applications

The specifications in ISO 17225-5:2026 are crucial for:

Producers and Suppliers: Standardized definitions facilitate efficient production planning, quality assurance, and labeling of firewood products, ensuring they meet market and regulatory expectations.

Traders and Retailers: Clear specifications improve the reliability of firewood transactions, supporting fair comparisons and enhancing customer trust.

Appliance Manufacturers and Installers: The standard supports the design and operation of wood-burning appliances, ensuring compatibility with biofuel specifications to optimize efficiency and minimize emissions.

End Users (Residential, Commercial, Public Buildings): Consumers benefit from reliable, high-quality firewood that matches their appliance requirements, leading to cleaner combustion and improved safety.

Regulatory Bodies and Inspectors: Harmonized criteria aid in compliance checks, reporting, and certification processes within the solid biofuel supply chain.

Sustainability and Environmental Compliance: Facilitates responsible sourcing and use of renewable energy resources, supporting national and international environmental goals.

Related Standards

ISO 17225-1:2021: Solid biofuels - Fuel specifications and classes - General requirements (foundation for all parts of ISO 17225)

ISO 14780: Solid biofuels - Sample preparation (relevant for laboratory analysis)

ISO 16559: Solid biofuels - Vocabulary (terms and definitions)

ISO 18134-1 & ISO 18134-2: Solid biofuels - Determination of moisture content - Reference and simplified methods

ISO 21945: Solid biofuels - Simplified sampling method for small scale applications

ISO 18125: Solid biofuels - Determination of calorific value

EN 13556: Nomenclature of timbers used in Europe (for species declaration in firewood)

Applicable EN appliance standards: Such as EN 13229, EN 12815, EN 13240, EN 303-5 (for wood-burning stoves, fireplaces, boilers, and cookers)

ISO 17225-5:2026 supports the efficient, sustainable, and transparent use of solid biofuels by defining a clear framework for graded firewood quality that benefits the entire value chain from forest to end user.

ISO 17225-5:2026 PDF

Abstract

Похожие стандарты

Overview

Key Topics

Applications

Related Standards

Технические детали

ISO 17225-1:2021

Solid biofuels — Fuel specifications and classes — Part 1: General requirements

BS EN ISO 17225-5:2026

Solid biofuels. Fuel specifications and classes. Graded firewood.

ISO 14780:2017/Amd 1:2019

Solid biofuels — Sample preparation — Amendment 1

SIST EN ISO 16559:2022

Solid biofuels - Vocabulary (ISO 16559:2022)

SIST EN ISO 18134-1:2022

Solid biofuels - Determination of moisture content - Part 1: Reference method (ISO 18134-1:2022)

SIST EN ISO 18134-2:2024

Solid biofuels - Determination of moisture content - Part 2: Simplified method (ISO 18134-2:2024)

SIST EN ISO 21945:2020

Solid biofuels - Simplified sampling method for small scale applications (ISO 21945:2020)

SIST EN ISO 18125:2017

Solid biofuels - Determination of calorific value (ISO 18125:2017)