10.7.3 Abbreviations
A
a
a
at
B
B.D.C.
BEP
BOD
C
C
CaO
cd
ce
cf
CH4
cmWG
C/N
CO2
COD
cp
cP
CS
Cs
D
D
D, d
d
d
DN
dp
Dr
E
E
E
Ee
Es
F
F
Fe(OH)3
FL
G
gc, max
GM
Gp
GRP
Gy
area
inflation rate
year (per annum)
atmosphere
biomass
bottom dead center
GATE/GTZ Biogas Extension Program
biochemical oxygen demand
carbon
circumference
calcium oxide
candela (candle power)
coefficient of earth pressure
coefficient of friction
methane
cm water gage
carbon/nitrogen ratio
carbon dioxide
chemical oxygen demand
coefficient of pipe friction
heat capacity
crankshaft
storage capacity
density of biogas
energy demand
pipe diameters
day
stoichiometric air ratio
density of biogas under normal (s.t.p.) conditions
pressure drop
digestion rate
illuminance
compression ratio
energy
energy input
specific illuminance
luminous flux
relative dampness of biogas
ferric hydrate
friction losses
gas production
max. gas consumption per hour
moisture content of gas
specific gas production
glass-reinforced plastic
gas yield
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