Material

Calorific value kJ/kg

Reference

Olive pomace

Olive cake

Sawdust briquettete

Wood fuel

Woody biomass

Oil shale (Jordan)

Sultani field

Lajjun field

Coal

Lignite

Anthracite

This work

Olive cake

Wood samples

17,086 - 23,418

22,500

19,810

19,710

21,200

17,997 - 19,366

5444

8676

19,000

30,000

17,869; 18,115 (after)^a

21,901; 22,191(before)^a

17,136; 17,592 (after)^a

17,582; 17,927 (before)^a

[15]

[30]

[31]

[32]

[32]

[33]

[34]

[34]

[35]

[35]