Westmorland Woodfuel
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Locally sourced firewood from Cumbria's Eden Valley

Information and resources on woodfuel burning

Dry Firewood LogsWe aim to meet the needs of the discerning customer who recognises the importance and benefits of burning properly ‘seasoned’ wood. Firewood needs to be under 20% moisture content to get the true value of the energy it holds.

We sample every batch of firewood to ensure that it is under 20% by selecting 3 or 4 larger logs from the middle of each bag, splitting them and testing the core with a firewood moisture meter (pin meter). We are happy to offer to test the firewood in front of our customers.

The importance of burning well-seasoned firewood is detailed in the "Wood Fuels Handbook", publish by the Biomass Trade Centres. The following table is taken from the Wood Fuels Handbook and details the calorific value, ash content and ash-melting point of various biomass fuels:

  Calorific Value
MJ/Kg
Ash
(wt% d.b.)
Ash melting point (°C)
Typical values for virgin wood materials
Coniferous wood
19.2
(18.8-19.8)
0.3
(0.2-0.5)
 
Typical values for virgin wood materials
Deciduous wood
19.0
(18.5-19.2)
0.3
(0.2-0.5)
 
Typical values for virgin bark materials 20
(19-21)
4-5
(2-10)
 
Typical values for virgin wood materials
Logging residues
19-20 1.5-2  
Typical values for virgin wood materials
Short rotation coppice (SRC)
(Willow & Poplar)
18.6-19.2 2  
Spruce (with bark) 18.8 0.6 1426
Beech (with bark) 18.4 0.5 1340
Poplar (SRC) 18.5 1.8 1335
Willow (SRC) 18.4 2.0 1283
Bark (coniferous trees) 19.2 3.8 1440
Vine wood (chips) 19.8 3.4 1450
Miscanthus 17.6 3.9 973
Wheat straw 17.2 5.7 998
Triticale (grains) 16.9 2.1 730
Calorific value, ash content and ash-melting point of various biomass fuels. Source: Wood Fuels Handbook, Biomass Trade Centres, April 2009

The graph below shows how the calorific value of wood increases as the moisture content decreases. Source: Wood Fuels Handbook

Calorific Value Graph

Westmorland Woodfuel

Sleastonhow

Kirkby Thore

Cumbria CA10 1XL

 

tel: 07557 334028

tim@westmorlandwoodfuel.co.uk