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The essentials


Energy Values of Wood

Energy values at the range of moisture content values (MC%)

 

Moisture Content (wet basis) %

Energy value Gigajoules per tonne (GJ/t)

60

5.60

55

6.61

45

8.63

40

9.64

35

10.65

30

11.66

25

12.68

20

13.69

18

14.09

15

14.70

10

15.71

One gigajoule (GJ) = 277.78 Kilowatt-hours.

Energy Value (GJ/tonne) = 17.7283 – (0.2021 x mc)

(NB ‘mc’ is moisture content in a whole number; ie. 50% = ‘50’ , and is a percentage of total ‘sample’ weight ).

 

Energy Value Increase due to drying:

Drying Range

% Energy Value Increase

60% to 35%

90.2%

60% to 30%

108.2%

60% to 20%

144.5%

   

55% to 35%

61.1%

55% to 30%

76.4%

55% to 20%

107.1%

 

Decrease in Weight on Drying, (% tonnage loss):

Drying Range

% Weight Loss

60% to 35%

25%

60% to 30%

30%

60% to 20%

40%

   

55% to 35%

20%

55% to 30%

25%

55% to 20%

35%

The essentials

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Conversion factors

Energy Content of Wood

 

 

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