Environmental Engineering Reference
In-Depth Information
PHYSICAL PRETREATMENT
OF BIOMASS
W
IEBREN DE
J
ONG
Department of Process and Energy, Energy Technology Section, Faculty of Mechanical,
Maritime and Materials Engineering, Delft University of Technology, Delft, the Netherlands
ACRONYMS
ar as received basis
daf dry and ash-free basis
HGI Hardgrove grindability index
LHV lower heating value
SRF short rotation forestry
TOP torrefaction and pelletizing process
VOC volatile organic compound
SYMBOLS
[m
2
]
A area across which heat/mass transfer takes place
kg
−1
K
−1
]
c
p
specific heat capacity
[J
C
constant in Equation (8.1)
various
[m
2
s
−1
]
D
diffusion coefficient
d
diameter
[m]
d
p
particle diameter
[m]
kg
−1
] or [kWh
kg
−1
]
E
specific energy consumption
[kJ
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