DUCT SIZE CALCULATOR (SI) DUCT SIZE CAL
A. AIR VOLOUME (L/s) 700 A. AIR VOLOUME (CFM)
W H
B. DUCT SIZE (MM) 660 305 B. DUCT SIZE (INCH)
C. DUCT MATERIAL GALVANISED C. DUCT MATERIAL
D. ABS ROUGHNESS(mm) 0.15 D. ABS ROUGHNESS (ft)
E. EQUIVALAENT DIAMETER (MM) 481.6 E. EQUIVALAENT DIAMETER
F. HYDRAULIC DIAMETER (MM) 417.2 F. HYDRAULIC DIAMETER (I
G. DUCT VELOCITY (m/s) 3.5 G. DUCT VELOCITY (FPM)
H. VELOCITY PRESSURE (Pa) 7.3 H. VELOCITY PRESSURE (In
I. REYNOLDS NO.(Re) 96,332 I. REYNOLDS NO.(Re)
J. FRICTION FACTOR (f) 0.01950 J. FRICTION FACTOR (f)
K. DUCT FRICTION (Pa/ M) 0.340 K. DUCT FRICTION (Inch/ 10
For this calculation pleae check only duct fric For this calculation pleae
HEIGHT AS PER AVAILABILITY OF SPACE. HEIGHT AS PER AVAILABI
DUCT FRICTION AS PER RECOMMENDED VALUE. DUCT FRICTION AS PER R
ONLY INPUT YELLOW FIGURE. ONLY INPUT YELLOW
DON'T CHANGE ANY OTHER VALUE OR FORMULAE. DON'T CHANGE ANY OTHE
A=6.83E+20 A=
B= 2.82E-07 B=
f= 0.019944 f=
DUCT SIZE CALCULATOR (IP)
R VOLOUME (CFM) 4000
W H
CT SIZE (INCH) 46 14 1219
CT MATERIAL GALVANISED
S ROUGHNESS (ft) 0.0005
UIVALAENT DIAMETER (INCH) 26.6
DRAULIC DIAMETER (INCH) 21.5
CT VELOCITY (FPM) 894.4
LOCITY PRESSURE (Inch) 0.050
YNOLDS NO.(Re) 164,352
ICTION FACTOR (f) 0.01767
CT FRICTION (Inch/ 100 FT) 0.049
r this calculation pleae check only duct fricti
IGHT AS PER AVAILABILITY OF SPACE.
CT FRICTION AS PER RECOMMENDED VALUE.
NLY INPUT YELLOW FIGURE.
N'T CHANGE ANY OTHER VALUE OR FORMULAE.
3.297E+21
0
0.0163832
