AIR-HANDLING DUCTWORK CROSS-SECTION CALCULATION
Ductwork shape selection:
Rectangular section
Round cross- section
Dimension rounding selection:
Precise dimension
Fine line
Rough line
Ductwork dimension A, or diameter D:
allowable dimension range 50 to 3000 mm
__________
m
mm
cm
dm
km
ft
in
mil
yd
Dimension B
Volume air-flow rate:
allowable air-flow range 0 to 500 m3/s
__________
m3/s
m3/h
m3/min
l/s
l/h
l/min
ft3/s
ft3/min
ft3/h
Average air-flow velocity:
Alternative entry from 0 to 30 m/s
__________
m/s
m/h
km/h
m/min
ft/s
ft/h
MPH