EN ISO 17827-2:2024 PDF

Overview

EN ISO 17827-2:2024 (ISO 17827-2:2024) specifies a laboratory vibrating screen method for determining the particle size distribution of uncompressed solid biofuels with a nominal top size of 3.15 mm (3,15 mm) and below (e.g., sawdust). This second edition (superseding the 2016 version) is intended for particulate biofuels that have been reduced in size or are inherently particulate and excludes manual sieving due to clogging risks for small apertures.

Key topics and technical requirements

• Scope: Applies to particulate uncompressed fuels with top size ≤ 3.15 mm.
• Principle: Mechanical sorting by vibrating sieves to obtain mass fractions (sieve fractions) across size classes.
• Apparatus: Requirements include sieves (minimum effective area 250 cm²), collecting pan, weighing containers, brush, mechanical sieving equipment and a balance.
• Sieve specification:
  • Apertures used in this part: 3.15 mm, 2.0 mm, 1.0 mm, 0.5 mm and 0.1 mm (as reflected in the 2024 revision).
  • Sieves with apertures