Solid biofuels - Fuel specifications and classes - Part 4: Graded wood chips (ISO 17225-4:2021)
Solid biofuels - Fuel specifications and classes - Part 4: Graded wood chips (ISO 17225-4:2021)
This document determines the fuel quality classes and specifications of graded wood chips. This document covers only wood chips produced from the following raw materials (see ISO 17225-1:2021, Table 1): 1.1 Forest, plantation and other virgin wood; 1.2 By-products and residues from wood processing industry; 1.3.1 Chemically untreated used wood. This document covers only wood chips, which are produced with sharp tools, and does not cover hog fuel, which is produced with blunt tools.
EN ISO 17225-4:2021 - Solid biofuels: Graded wood chips defines fuel quality classes and specifications for graded wood chips used as solid biofuel. Published by CEN and identical to ISO 17225-4:2021, this part of the ISO 17225 series covers wood chips produced with sharp tools from the following raw materials:
The standard explicitly excludes hog fuel (produced with blunt tools) and gives guidance to support trading, equipment compatibility and regulatory reporting for residential, commercial and small/medium industrial heating applications.
EN ISO 17225-4:2021 is intended for:
Стандарты, упомянутые в описании
Typical application scales noted in the standard range from below 100 kW (residential) up to several MW (small/medium district heating and commercial systems).
Keywords: EN ISO 17225-4:2021, graded wood chips, solid biofuels, fuel specifications, wood chip quality classes, moisture content, particle size, bulk density, ash content, sampling and analysis.