Firewood logs, water content
Firewood logsFirewood is cut and split oven-ready fuel wood used in household wood burning appliances like stoves, fireplaces and central heating systems. By and large, firewood is from 150mm to 1 000 mm long.
Standardized firewoodThe EN 14961-5 norm "Solid biofuels - Fuel specifications and classes - Part 5: Firewood for non-industrial use" determines the fuel quality classes and specifications of firewood for non industrial use.
Firewood is produced from the following raw materials:
- whole trees without roots;
- chemically untreated wood residues;
- stem wood;
- logging residues (tree top).
Is not included in the scope of the norm EN 14961-4 :
Demolition wood, defined as "used wood arising from demolition of buildings or civil engineering installations" (FprEN 14588:2010,4.52).
Oven-ready firewood water contentFirewood moisture content, determined with the oven drying method according to the norm EN 14774, is to be equal or inferior to 20%, 25% or 35% on its wet mass depending on the classes of firewood and not less 12% on wet basis.
As far as moisture on dry basis is concerned, it should be equal or inferior to 25%, 33% or 54% depending on the classes of firewood and not less than 13,64% on dry basis.
(see comparison between water content on wet basis and moisture on dry basis)
With its hammer probe, this moisture meter allows to measure water content and temperature of billets, logs or blocks, even freshly cut.
With its hammer probe or special probes, this moisture meter allows to measure water content of round wood, split logs, wood chips, sawdust, pellets, hay, straw and cellulose bales.
Equilibrium humidity content
Also known as the hygroscopic equilibrium, this term is used to define the water equilibrium of a material in relation to external conditions.
"pricing depends on the measured moisture content"