General
Symbol
Designation
min
Minimum
max
Maximum
avg
Average
alw
Allowable
ttl
Total
st
Stoichiometric
abs
Absolute
n
NStandard temperature and pressure (in standard condition)
b
Operation (in operating condition)
l
Loss
Water/steam state
S
Saturation (boiling state)
΄
Liquid saturated, boiling water
῎
Vaporous saturated, saturated steam
Location/apparatus/system part
SV
Safety valve
PL
Pressure limiter
boi
Boiler
Sys
(Steam boiler) system
bu
(Combustion) burner
P
(Pipe)work
valve
Valves
C
Consumer
dC
Direct consumer
iC
Indirect consumer
OU
Own use
dea
Deaeration
HL
Heat loss
ES
Expansion loss/steam
HX
Heat exchanger
amb
Ambient
Media
A
Air
FG
Flue gas
F
Fuel
MW
Make-up water
PW
Process water
FW
Feed water
Steam
HS
Heat-up steam (feed water vessel)
BD
Surface blowdown
VS
Exhaust vapour
Co
Condensate
oCo
Oxygenic condensate
fCo
Oxygen-free condensate
