Symbol	Concept	Units
db	Dry basis	% db
wb	Wet basis	% wb
BD	Bulk density	kg/m3·wb
DU	Durability	%
E	Energy density	MJ/m3
HHV	High heating value	MJ/kg
LHV	Low heating value	MJ/kg
M	Moisture	% wb
BS	Barley straw	-
CP	Granulometric separation powder from cork industries	-
GP	Grape pomace	-
OB	Olive branches	-
OP	Olive pomace	-
SW	Pine sawdust	-
PO	Pyrenean oak	-
PS	Pyrenean sylvestris	-
VS	Vine shoots	-
WS	Wheat straw	-