1. Sponsored by: September 2010 1 Applying CEN Standards Prepared by Louise Simmonds TV Energy

2. Sponsored by: September 2010 2 General CEN Standards are currently in draft format Final approval should be in November 2010 When CEN standards are approved, National standards should be withdrawn or adopted to CEN standards Standards classify Origin/Source material Traded form e.g. wood chip Specification of properties Typical values

3. Sponsored by: September 2010 3 Applying CEN Standards CEN Standards are useful for Buyers and Sellers of Wood Fuel Boilers will require fuel to specific CEN standards Methods covered and characteristics that can easily be measured include Sampling Particle size Bulk density Moisture content

4. Sponsored by: CEN/TS 14961 Fuel specifications and classes September 2010 4 Fuel specifications

5. Sponsored by: September 2010 5 Sampling CEN/TS 14778-1 Solid biofuels - Sampling

6. Sponsored by: CEN/TS 15149-parts 1,2 and 3 Determination of particle size distribution ONORM=G CEN=P September 2010 6 Particle Size

7. Sponsored by: September 2010 7 Bulk Density CEN/TS 15103 Determination of bulk density

8. Sponsored by: September 2010 8 Moisture content CEN/TS 14774-parts 1,2 and 3 Determination of moisture content ONORM=W CEN=M The moisture content of woodchip is normally expressed as a % of total weight (wet basis) MC (%) wet basis = ((Wet weight – Dry Weight)/ Wet weight) x 100) Measurement Weigh a sample of wet chip, dry using a fan oven at 105 C Weigh until dry, use calculation above to give moisture content.

9. Sponsored by: September 2010 9 More information Copies of the draft CEN Standards are available to download from the Biomass Energy Centre web site http://www.biomassenergycentre.org.uk http://www.tvenergy.org/ By the way…. CEN stands for Comite Europeen de Normalisation Or European Committee for Standardization