Symbols
Symbol Unit
Description
E
Joule, kWh energy
E state
kWh
energy required to reach an operating state (standby, idle, run time,
operating)
ξ
randomness of a system
f
objective function
F
N, kg*m/s 2 force
g
m/s 2
gravity
h
m
height
I
A
electric current
k
kJ/cm 3
machine specific constant
m
kg
mass
m iop
kW
energy consumption of machine operation (standby, idle, warmup,
…) of machine i
n
production volume
η i
degree of efficiency
η system
overall efficiency of a system
Θ
feasible region or constraint set
P
kW
power
ρ
bar
pressure
ρ am
bar
ambient state pressure
R n
geometrical space of decision variables
s
mm
distance
xv
Symbol Unit
Description
E
Joule, kWh energy
E state
kWh
energy required to reach an operating state (standby, idle, run time,
operating)
ξ
randomness of a system
f
objective function
F
N, kg*m/s 2 force
g
m/s 2
gravity
h
m
height
I
A
electric current
k
kJ/cm 3
machine specific constant
m
kg
mass
m iop
kW
energy consumption of machine operation (standby, idle, warmup,
…) of machine i
n
production volume
η i
degree of efficiency
η system
overall efficiency of a system
Θ
feasible region or constraint set
P
kW
power
ρ
bar
pressure
ρ am
bar
ambient state pressure
R n
geometrical space of decision variables
s
mm
distance
xv