Btu is nothing more than the amount of energy needs to head a single pound of water and increase the temperature by a single degree.
Btu lb hardwood softwood.
Btu or british thermal unit is the amount of energy required to heat one pound of liquid water by one degree fahrenheit.
It is said that under ideal conditions one pound of wood 0 mc can produce 8600 btu s.
185 will heat up to 5 182 sq feet including all buildings well insulated plus hot water burning a good seasoned hardwood like oak.
A cord of the more dense wood will have more energy than a cord of less dense softwood.
Species that contain a high amount of resin can produce as much as 9000 btu s pound.
Less dense softwoods have less btu per cord than more dense hardwood but they also weigh less per cord.
Seasoned firewood is described as having a 20 moisture content.
Non resinous wood has around 8000 to 8500 btu per pound and resinous wood has around 8600 to 9700 btu per pound.
The difference in energy content is in the woods density.
All firewood has about the same btu per pound.
All species of wood generate similar heat btu s on a per pound basis with a slightly higher amount for high resinous species of trees.
Wood species type btu values of a cord burning wood in a wood stove.
To get the most energy out of your firewood the wood should be seasoned.
The btu in a cord of firewood is usually close to the same per pound between species.
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Seasoning firewood takes time.