Note that in the table above 1 net cord volume = 85 ft3 is used to convert between the "Density" and "Weight of Cord" column (1 stacked cord volume = 128 ft3). Be aware that the densities used for the wood species varies significantly. The densities used above is for natural dried wood where the average moisture content is approximately 20%.
Heat values of cords with dry wood can be estimated by adding 10% to the green wood cords values.
Recoverable heat values are calculated with a stove efficiency of approximately 65%.
How to Calculate the Combustion Heat in MJ/kg from the Table above
calculate "Density of Dry Wood" in kg/m3 by multiplying lb/ft3 with 16.018
calculate "Weight of Dry Wood" in kg/cord by multiplying lb/cord with 0.4536
calculate "Recoverable Heat Value of Cord (Dry Wood)" in MJ/cord by multiplying Millions Btu/cord with 1055.06
calculate "Recoverable Heat Value per kg (Dry Wood)" in MJ/kg by dividing 3 with 2
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