FAN STATIC PRESSURE CALCULATION AIR
KED
LINE
KED
TEMPERATURE (t)
DUCT
BI SHEET
FAN
EF-1F-04
GRAVITY (r)
70
KINEMATIC VISCOSITY ( n) ROUGHNESS (e = )
No Start
Code
Items
Q'ty
Spiral 3
End
m /h
1
Duct Size
Air Volume
Kitchen Hood
1
1,650
mm
Square Duct mm mm
mm
2
m
m/s
m
1.56E-05 m 2/sec
Hydraulic Sectional Reynolds Darcy-Weisbach Velocity Length Diameter Arial Number friction factor Dh (m)
0.00015 m 0.00015 m
Re
λ
ζ
1.07E+05
0.019969
0.25
1.07E+05
0.019969
1
90゜Elbow
2
1,650
300
x
300
0.328
0.090
5.09
20
Liner Duct
1
1,650
300
x
300 0. 0.328
0.090
5.09
1
5
Reducer-Incr
1
1,650
300
x
300
0.328
0.090
5.09
1.07E+05
0.019969
0.18
1
7
Tee - Straight
1
5,650
550
x
300
0.439
0.165
9.51
2.68E+05
0.017433
0.30
1
7
Tee - Straight
1
6,350
550
x
300
0.439
0.165
10 10.69
3.01E+05
0.017247
0.30
3
20
Liner Duct
1
6,350
550
x
300 0. 0.439
0.165
10.69
3.01E+05
0.017247
2
7
Tee - Straight
1
6,906
550
x
300
0.439
0.165
11 11.63
3.27E+05
0.017122
0.30
3
1
90゜Elbow
1
6,906
550
x
300
0.439
0.165
11 11.63
3.27E+05
0.017122
0.25
4
4
30゜Elbow
2
6,906
550
x
300
0.439
0.165
11 11.63
3.27E+05
0.017122
0.11
5
9
Volume Dam
1
6,906
550
x
300
0.439
0.165
11 11.63
3.27E+05
0.017122
0.52
5
8
Tee - Bend
1
27,900
1,000 x
500
0.762
0.500
15 1 5.50
7.57E+05
0.014910
-0.38
6
20
7
5
8
7
9
5
10
3.5
0.7
7.5
2.70
Liner Duct
1
27,900
1,000 x
500 0. 0.762
0.500
15.50
7.57E+05
0.014910
Reducer-Incr
1
27,900
1,000 x
500
0.762
0.500
15 15.50
7.57E+05
0.014910
0.18
Tee - Straight
1
32,453
1,000 x
600
0.840
0.600
15 15.02
8.09E+05
0.014647
0.31
Reducer-Incr
1
32,453
1,000 x
600
0.840
0.600
15 15.02
8.09E+05
0.014647
0.18
7
Tee - Straight
1
32,340
1,200 x
600
0.914
0.720
12 12.48
7.31E+05
0.014600
0.16
11
20
Liner Duct
1
32,340
1,200 x
600 0. 0.914
0.720
12.48
7.31E+05
0.014600
12
5
Reducer-Incr
1
32,340
1,200 x
600
0.914
0.720
12 12.48
7.31E+05
0.014600
0.18
13
1
90゜Elbow
1
32,340
1,500 x
600
1.011
0.900
9.98
6.47E+05
0.014577
0.25
14
7
Tee - Straight
1
35,440
1,500 x
600
1.011
0.900
10 10.94
7.09E+05
0.014462
0.24
15
20
Liner Duct
1
35,440
1,500 x
600 1. 1.011
0.900
10.94
7.09E+05
0.014462
16
7
Tee - Straight
1
42,230
1,500 x
600
1.011
0.900
13 13.03
8.45E+05
0.014259
17
20
Liner Duct
1
42,230
1,500 x
600 1. 1.011
0.900
13.03 17.4
8.45E+05
0.014259
18
3
45゜Elbow
4
42,230
1,500 x
600
1.011
0.900
13 13.03
8.45E+05
0.014259
0.15 0.25
1.9
5.5
2.83
1.50
1.03 0.23 1.44
19
1
90゜Elbow
1
42,230
1,500 x
600
1.011
0.900
13 13.03
8.45E+05
0.014259
20
20
Liner Duct
1
42,230
1,500 x
600 1. 1.011
0.900
13.03 15.3
8.45E+05
0.014259
21
1
90゜Elbow
1
42,230
1,500 x
600
1.011
0.900
13 13.03
8.45E+05
0.014259
0.25
8.45E+05
0.014259
0.15
8.45E+05
0.014259
1.44
22
3
45゜Elbow
2
42,230
1,500 x
600
1.011
0.900
13 13.03
23
20
Liner Duct
1
42,230
1,500 x
600 1. 1.011
0.900
13.03
24
1
90゜Elbow
1
42,230
1,500 x
600
1.011
0.900
13 13.03
8.45E+05
0.014259
0.25
25
6
Reducer-Dec
1
42,230
1,500 x
600
1.011
0.900
13 13.03
8.45E+05
0.014259
0.06
26
1
90゜Elbow
1
42,230
1,050 x
800
1.000
0.840
13 13.96
8.95E+05
0.014218
0.25
20
Liner Duct
1
42,230
1,050 x
800 1. 1.000
0.840
13.96 10.7
8.95E+05
0.014218
28
3
45゜Elbow
2
42,230
1,050 x
800
1.000
0.840
13 13.96
8.95E+05
0.014218
29
20
Liner Duct
1
42,230
1,050 x
800 1. 1.000
0.840
13.96
8.95E+05
0.014218
30
1
90゜Elbow
2
42,230
1,050 x
800
1.000
0.840
13 13.96
8.95E+05
0.014218
0.25
14
Plenum Cha
1
42,230
1,050 x
800
1.000
0.840
13 13.96
8.95E+05
0.014218
0.80
22
Fan
1
42,230
1,050 x
800
1.000
0.840
13 13.96
8.95E+05
0.014218
0.00
33
20
Liner Duct
1
42,230
1,050 x
800 1. 1.000
0.840
13.96
8.95E+05
0.014218
34
5
Reducer-Incr
1
42,230
1,050 x
800
1.000
0.840
13 13.96
8.95E+05
0.014218
0.18
15
Louver
1
4 2,230 42
2,000 x 1,500
1.889
3.000
3.91
4.73E+05
0.014297
1.00
27
Rise serr Duc uctt
31 32
35
Fan
Louver
Pa/m
0.95
1,600 x 1,050
1
Unit friction loss
Partial Coefficient
1
℃
1.205 ㎏/m3
Total
8.3
5.7
2.0
1.44
1.67 0.15 1.67
1.67
75.00 Friction Loss
Pa
Allowance 10
Pa
Total
Pa
Air Flow Selection
1,200 Pa
Ph-V-Hz Motor
1/6
42,230 CM
ESP
3Ph-380V-5 37.0kW
Friction Loss Pa 150.00 7.81 3.33 2.81 16.35 20.66 1.89 24.43 20.36 17.92 42.35 -54.28 21.25 26.06 42.71 24.48 15.01 2.79 16.88 15.01 17.08 5.67 23.13 25.16 60.18 25.59 22.04 25.59 30.09 12.02 25.59 6.14 29.37 17.90 34.54 9.53 58.75 94.00 0.00 3.34 21.15 9.21
793.60 793.6 79.4 873.0
0Hz Expected
2/6
PARTIAL COEFFICIENT Code
Items
1 2 3 4 5 6
90゜Elbow 90゜Elbow 45゜Elbow 30゜Elbow Reduce Reducer-In r-Incre crease ase Reduce Reducer-De r-Decrea crease se
7
Tee - Stra Straig ight ht
8
Tee Tee - Bend Bend
9 Volu Volume me Dampe Damper r 10 Check Check Damper Damper 11 Fire Damper Damper 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
Diffuser Diffuser Shutter Shutter Plenum Plenum Chamber Chamber Louver Louver Inle Inlett Outle Outlett Filter Filter Box Coil Coil Liner Liner Duct Duct Silenc Silencer er Fan Fan Electric Electric Heater Flexible Flexible Duct
Coefficie 0.25
0.25
0.23
0.21
0.15 0.11 0.18 0.06 Q2/Q3 0.30
0.15 0.11 0.08
0.14 0.10 0.12
0.18
0..10 0 0.16 V>6 1.03 0o 0.52
0.20 0.27 V<6
0.30 0.38
0.40 0.46
0.50 0.53
10o 1.00
20o 2..30 2
30o 6.50
40o 14.00
Sato 0.19
Hoan 1.20
1.03 2.30 2.30
0.19
0.80 1.00 0.33 0.15
0.60 0.57
Absolute Roughness Coefficient Absolute Roughness Coefficient No
Surface
-k -3
(m) 10 ,
,
Remark
-
(feet)
,
1
(new)
2
PVC and Plastic Pipes
3
Stainless steel
4
Steel commercial pipe
5
-6
0.001 - 0.002
3.33 - 6.7 10
0.0015 - 0.007
0.5 - 2.33 10
0.015
5 10
0.045 - 0.09
1.5 - 3 10
Stretched steel
0.015
5 10
6
W eld steel
0.045
1.5 10
7
Galvanized steel
0.15
5 10
8
Rusted steel (corrosion)
0.15 - 4
5 - 133 10
9
New cast iron
0.25 - 0.8
8 - 27 10
10
W orn cast iron
0.8 - 1.5
2.7 - 5 10
11
Rusty cast iron
1.5 - 2.5
5 - 8.3 10
12
Sheet or asphalted cast iron
0.01 - 0.015
3.33 - 5 10
13
Smoothed cement
0.3
1 10
14
Ordinary concrete
0.3 - 1
1 - 3.33 10
15
Coarse concrete
0.3 - 5
1 - 16.7 10
16
W ell planed wood
0.18 - 0,9
6 - 30 10
17
Ordinary wood
5
16.7 10
-5
-5 -4
-5 -4
-4 -4
-4 -3 -3 -5
-3 -3 -3
-4
-3
B. Fittings Loss: Elbow No.
Duct Size (mm) W x H
Radius Angle (mm) Q'ty r q
H/W
r/W
x'
KRe
Kq
x
r kg/m
3
Velocity
Loss
m/s
Pa
1
850 x 600
850
90
1
0.71
1
0.210 1.00 1.00 0.210 1.2
0.000
2
850 x 600
850
45
1
0.71
1
0.233 1.00 0.60 0.140 1.2
0.000
3
800 x 600
450
30
1
0.75
1
0.230 1.00 0.45 0.104 1.2
0.000
Angle
A0
A1
2
2
Remark
Reduce Duct Size A0 (mm) W x H
Duct Size A1 (mm) W x H
1
800 x 60 6 00
2
No.
A0/A1
q
m
850 x 60 6 00
90
0.48
0.51 0. 0.941
500 x 40 4 00
700 x 40 4 00
30
0.20
0.28 0. 0.714
3
600 x 35 3 50
400 x 30 3 00
30
0.21
0.12 1. 1.750
4
400 x 300
1220 x 6 10 10
90
0.12
0.74 0. 0.161
5
1220 220 x 610 610 4,00 ,000 x 4,00 4,000 0 180 180
m
0.74 0.74 16. 16.0 0.0 0.047
Tee Duct Size A2 (mm) W x H
Duct Size A3 (mm) W x H
1
1000 x 500
800 x 800
#### 6, 6,900 ## #### 0.25 0.78
2
600 x 350
400 x 300
#### 3, 3,340 ## #### 0.10 1.75
3
1,200 x 400
700 x 400
#### 6,1 6,150 ### #### 0.17 1.71
No.
Damper Duct Size (mm) No. W x H
N
L/R
Q 1
Q 2
Q 3
Q 2/Q 3 A2/A3
CMH CMH CMH
Angle
Q 0
V0
q
CMH
m/s
x
Q'ty
r kg/m
3
Loss
1
450 x 250
2
0.6429
30
500
1.23
0.920 1.2
1
0.841
2
800 x 500
2
0.6154
20
8,000
5.56
0.920 1.2
1
17.037
Q'ty
Loss
Diffuser Louver Size A1 (mm) No. W x H 1
1,220 x 610
E ective ective Size Q A0 (mm) A0/A1 2 % CMH m
m/s
0.5954 2,050 0.800
0.96
80
V0
x
r kg/m
1.200 1.2
Remark
Pa
3
Remark
Pa 1
0.659
Tee
