ESP of Exhaust Fan
January 24, 2017 | Author: Rama Charan | Category: N/A
Short Description
External Static Pressure Calculation Model Work sheet...
Description
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
1
Bird Wire Mesh
500
300
0.15
772
5.15
1013
10.00
Refer Note 6
2
Non-return damper
500
300
0.15
772
5.15
1013
50.00
Refer Note 7
Straight Duct
500
300
0.15
772
5.15
1013
0.06
Refer Note 3
Reducer
625
300
0.1875
772
4.12
810
0.041
5.87
Refer Note 4
500
300
0.15
772
5.15
1013
0.064
Straight Duct
625
300
0.1875
772
4.12
810
0.04
Refer Note 3
4
Volume Control Damper
625
300
0.1875
772
4.12
810
12.5
Refer Note 8
5
Straight Duct
625
300
0.1875
772
4.12
810
0.17
Refer Note 3
6
Fire Damper
625
300
0.1875
772
4.12
810
2.00
Refer Note 5
7
Straight Duct
625
300
0.1875
772
0.339
4.12
810
0.408
0.14
Refer Note 3
8
Bend, 90°
625
300
0.1875
772
3.05
4.12
810
0.408
1.24
Refer Note 3
9
Straight Duct
625
300
0.1875
772
0.85
4.12
810
0.408
0.35
Refer Note 3
3
0.15
0.1
0.428
0.408 0.0418
0.0234975 0.065 0.408
0.408
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
10
Bend, 90°
625
300
0.1875
772
3.05
4.12
810
0.408
1.24
Refer Note 3
11
Straight Duct
625
300
0.1875
637
2.57
3.40
669
0.408
1.05
Refer Note 3
12
Bend, 90°
625
300
0.1875
637
3.05
3.40
669
0.408
1.24
Refer Note 3
13
Straight Duct
625
300
0.1875
637
0.60
3.40
669
0.408
0.24
Refer Note 3
14
Expansion
625
300
0.1875
637
3.40
669
0.028
1.18
Refer Note 4
575
300
0.1725
637
3.69
727
0.033
0.0259
0.0047059 0.031
15
Straight Duct
575
300
0.1725
637
4.01
3.69
727
0.408
1.64
Refer Note 3
16
Bend, 45°
575
300
0.1725
637
1.37
3.69
727
0.408
0.56
Refer Note 3
17
Straight Duct
575
300
0.1725
637
1.96
3.69
727
0.408
0.80
Refer Note 3
18
Bend, 45°
575
300
0.1725
637
1.37
3.69
727
0.408
0.56
Refer Note 3
19
Straight Duct
575
300
0.1725
352
0.98
2.04
402
0.408
0.40
Refer Note 3
20
Expansion
575
300
0.1725
352
2.04
402
1.94
Refer Note 4
0.010
0.0094
0.0077691
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
W
H
425
300
0.1275
352
Velocity hv= V=Q/a (V/4005)² (FPM)
2.76
543
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
0.017
0.018
21
Straight Duct
425
300
0.1275
352
3.34
2.76
543
0.408
1.36
Refer Note 3
22
Bend, 13°
425
300
0.1275
352
0.40
2.76
543
0.408
0.16
Refer Note 3
23
Straight Duct
425
300
0.1275
303
6.65
2.38
468
0.408
2.71
Refer Note 3
24
Expansion
425
300
0.1275
303
2.38
468
0.014
1.51
Refer Note 4
300
350
0.105
303
2.89
568
0.020
0.0127
0.0060206 0.019
25
Straight Duct
300
350
0.105
303
2.24
2.89
568
0.408
0.91
Refer Note 3
26
Bend, 90°
300
350
0.105
303
2.13
2.89
568
0.408
0.87
Refer Note 3
27
Straight Duct
300
350
0.105
303
9.54
2.89
568
0.408
3.89
Refer Note 3
28
Bend, 7°
300
350
0.105
303
0.1656667
2.89
568
0.408
0.07
Refer Note 3
29
Straight Duct
300
350
0.105
251
5.18
2.39
471
0.408
2.11
Refer Note 3
30
Expansion
300
350
0.105
251
2.39
471
1.99
Refer Note 4
0.014
0.0128
0.0079578
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
W
H
300
275
0.0825
251
Velocity hv= V=Q/a (V/4005)² (FPM)
3.04
599
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
0.021
0.022
31
Straight Duct
300
275
0.0825
151
4.56
1.83
360
0.408
1.86
Refer Note 3
32
Bend, 75°
300
275
0.0825
151
1.775
1.83
360
0.408
0.72
Refer Note 3
33
Straight Duct
300
275
0.0825
151
5.55
1.83
360
0.408
2.26
Refer Note 3
34
Bend, 19°
300
275
0.0825
151
0.4496667
1.83
360
0.408
0.18
Refer Note 3
35
Straight Duct
300
275
0.0825
104
2.16
1.26
248
0.408
0.88
Refer Note 3
36
Expansion
300
275
0.0825
104
1.26
248
0.004
0.79
Refer Note 4
300
200
0.06
104
1.73
341
0.007
0.0036
0.0031798 0.007
37
Straight Duct
300
200
0.06
104
1.32
1.73
341
0.408
0.54
Refer Note 3
38
Bend, 10°
300
200
0.06
104
0.1688889
1.73
341
0.408
0.07
Refer Note 3
39
Straight Duct
300
200
0.06
104
2.36
1.73
341
0.408
0.96
Refer Note 3
40
Straight Duct
300
100
0.03
31
0.68
1.03
203
0.408
0.28
Refer Note 3
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
41
Exhaust Diffuser
300
300
0.09
31
0.34
68
5.25
Refer Note 2
42
Door Grille
175
100
0.0175
28
1.60
315
31.75
Refer Note 1
Sub Total= Add 10% safety factor Total External Static Pressure Say Notes: 1 2 3 4 5 6 7 8
Refer attached EH Price Catalogue of Door Grille Refer attached EH Price Catalogue of Exhaust Air Diffuser Duct Designed at 0.408 Pa/m Refer Carrier Hand Book Table attached Refer ATAI Catalogue of fire damper attached Assumed value Refer Non-return damper Catalogue Refer ATAI Catalogue of volume control damper attached
154.38 7.72 162.10 162
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED EXHAUST FAN S.No Description .
W
H
Area Air Velocity Equivalent a=H×W Flow Q =Q/a Length(m) (m²) (L/s) (m/s)
Velocity hv= V=Q/a (V/4005)² (FPM)
nhv1
Pressure Total nhv2 n(hv2-hv1) Drop(Pa/ Pressure m) Drop(Pa)
Remarks
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE BUILDING ROOF MOUNTED PACKAGE UNIT S.No. Description
1
W
Laminar flow 600 diffuser(SD)
H
Air Area Velocity Velocity Flow Equivalent hv= a=H×W =Q/a V=Q/a nhv1 Q Length(m) (V/4005)² (m²) (m/s) (FPM) (L/s)
600
0.36
280
0.09
280
0.78
153
1.00
3.11
612
nhv2 n(hv2-hv1)
Pressure Total Drop Pressure (Pa/m) Drop(Pa)
Remarks
20.00
Refer Note 1
0.39
0.39
Refer Note 2
2
Flexible Duct
300
300
3
Straight Duct
350
375 0.13125
560
2.42
4.27
840
0.39
0.94
Refer Note 2
4
Bend, 90°
350
375 0.13125
560
2.44
4.27
840
0.39
0.95
Refer Note 3
5
Straight Duct
350
375 0.13125
560
1.10
4.27
840
0.39
0.43
Refer Note 2
6
Bend, 90°
350
375 0.13125
560
2.44
4.27
840
0.39
0.95
Refer Note 3
7
Straight Duct
350
375 0.13125
560
4.53
4.27
840
0.39
1.77
Refer Note 2
8
Bend, 12°
350
375 0.13125
560
0.33
4.27
840
0.39
0.13
Refer Note 3
9
Straight Duct
350
375 0.13125
560
2.20
4.27
840
0.39
0.86
Refer Note 2
10
Bend, 25°
350
375 0.13125
560
0.68
4.27
840
0.39
0.26
Refer Note 3
11
Straight Duct
350
375 0.13125
560
0.18
4.27
840
0.39
0.07
Refer Note 2
12
Reducer
350
375 0.13125
560
4.27
840
6.50
Refer Note 3
Page 59 of 81
0.044
0.045
0.0260136
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE BUILDING ROOF MOUNTED PACKAGE UNIT S.No. Description
Air Area Velocity Velocity Flow Equivalent hv= a=H×W =Q/a V=Q/a nhv1 Q Length(m) (V/4005)² (m²) (m/s) (FPM) (L/s)
nhv2 n(hv2-hv1)
0.019
W
H
450
450
0.2025
560
2.77
544
4.53
892
0.018
13
Straight Duct
450
450
0.2025
918
14
Reducer
450
450
0.2025
918
4.53
892
0.050
450
575 0.25875
918
3.55
698
0.030
2.18
Pressure Total Drop Pressure (Pa/m) Drop(Pa)
0.39
0.051
0.0196246
Remarks
0.85
Refer Note 2
4.91
Refer Note 3
0.031
15
Straight Duct
450
575 0.25875 1277
3.11
4.94
972
0.39
1.21
Refer Note 2
16
Bend, 75°
450
575 0.25875 1277
2.79
4.94
972
0.39
1.09
Refer Note 3
17
Straight Duct
450
575 0.25875 1376
3.38
5.32
1047
0.39
1.32
Refer Note 2
18
Reducer
450
575 0.25875 1376
5.32
1047
0.068
3.31
Refer Note 3
500
575
0.2875
1376
4.79
942
0.055
5.13
1011
1.06
Refer Note 2
4.96
Refer Note 3
19
Straight Duct
500
575
0.2875
1476
20
Reducer
500
575
0.2875
1476
5.13
1011
0.064
600
575
0.345
1476
4.28
842
0.044
2.71
Page 60 of 81
0.07
0.0132403
0.056
0.39
0.065
0.0198452
0.045
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE BUILDING ROOF MOUNTED PACKAGE UNIT S.No. Description
W
H
Air Area Velocity Velocity Flow Equivalent hv= a=H×W =Q/a V=Q/a nhv1 Q Length(m) (V/4005)² (m²) (m/s) (FPM) (L/s)
21
Straight Duct
600
575
0.345
1869
22
Reducer
600
575
0.345
600
700
2.21
5.42
1066
1869
5.42
1066
0.071
0.42
1869
4.45
876
0.048
nhv2 n(hv2-hv1)
Pressure Total Drop Pressure (Pa/m) Drop(Pa)
0.39
0.072
0.0235219
Remarks
0.86
Refer Note 2
5.88
Refer Note 3
0.049
23
Straight Duct
600
700
0.42
2065
0.59
4.92
968
0.39
0.23
Refer Note 2
24
Bend, 7°
600
700
0.42
2065
0.40
4.92
968
0.39
0.16
Refer Note 3
25
Straight Duct
600
700
0.42
2541
3.11
6.05
1191
0.39
1.21
Refer Note 2
26
Reducer
600
700
0.42
2541
6.05
1191
0.088
3.34
Refer Note 3
650
700
0.455
2541
5.58
1099
0.075
0.09
0.0133423
0.077
27
Straight Duct
650
700
0.455
2821
6.05
6.20
1220
0.39
2.36
Refer Note 2
28
Bend, 90°
650
700
0.455
2821
4.27
6.20
1220
0.39
1.67
Refer Note 3
29
Straight Duct
650
700
0.455
2821
3.94
6.20
1220
0.39
1.54
Refer Note 2
30
Reducer
650
700
0.455
2821
6.20
1220
0.093
3.26
Refer Note 3
700
700
0.49
2821
5.76
1133
0.080
700
700
0.49
2921
5.96
1173
1.10
Refer Note 2
31
Straight Duct
2.83
Page 61 of 81
0.095
0.0130484 0.082 0.39
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE BUILDING ROOF MOUNTED PACKAGE UNIT S.No. Description
32 33
Straight Duct Straight Duct
Air Area Velocity Velocity Flow Equivalent hv= a=H×W =Q/a V=Q/a nhv1 Q Length(m) (V/4005)² (m²) (m/s) (FPM) (L/s)
nhv2 n(hv2-hv1)
Pressure Total Drop Pressure (Pa/m) Drop(Pa)
W
H
Remarks
700
700
0.49
2921
1.00
5.96
1173
0.39
0.39
Refer Note 2
700
700
0.49
2921
0.30
5.96
1173
0.39
0.12
Refer Note 2
34
Bend, 12°
700
700
0.49
2921
0.57
5.96
1173
0.39
0.22
Refer Note 3
35
Straight Duct
700
700
0.49
2921
2.15
5.96
1173
0.39
0.84
Refer Note 2
36
Reducer
700
700
0.49
2921
5.96
1173
0.086
11.75
Refer Note 3
1200 600
0.72
2921
4.06
799
0.040
6.47
1273
0.78
Refer Note 2
5.53
Refer Note 3
37
Straight Duct
1200 600
0.72
4657
38
Reducer
1200 600
0.72
4657
6.47
1273.24
0.10
1300 625
0.8125
4657
5.73
1128.29
0.08
1.99
0.088
0.0470096
0.041
0.39 0.10
0.02 0.08
39
Bend, 35°
1300 625
0.8125
4657
2.73
5.73
1128.29
0.39
1.06
Refer Note 3
40
Straight Duct
1300 625
0.8125
5281
4.54
6.50
1279.47
0.39
1.77
Refer Note 2
41
Bend, 43°
1300 625
0.8125
5281
3.35
6.50
1279.47
0.39
1.31
Refer Note 3
42
Reducer
1300 625
0.8125
5281
6.50
1279.47
0.10
11.68
Refer Note 3
1000 675
0.675
5281
7.82
1540.10
0.15
Page 62 of 81
0.10
0.05 0.15
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE BUILDING ROOF MOUNTED PACKAGE UNIT S.No. Description
W
H
Air Area Velocity Velocity Flow Equivalent hv= a=H×W =Q/a V=Q/a nhv1 Q Length(m) (V/4005)² (m²) (m/s) (FPM) (L/s)
43
Straight Duct
1000 675
0.675
5281
0.15
7.82
1540.10
44
Volume Control Damper
1000 675
0.675
5281
0.15
7.82
1540.10
45
Straight Duct
1000 675
0.675
5281
0.15
7.82
1540
46
Straight Duct
1000 675
0.675
5281
0.50
7.82
47
Bend, 90°
1000 675
0.675
5281
6.40
48
Bend, 90°
1600 675
1.08
7500
49
Straight Duct
1600 675
1.08
Fire Damper 1600 675
50
nhv2 n(hv2-hv1)
Pressure Total Drop Pressure (Pa/m) Drop(Pa) 0.39
Remarks
0.06
Refer Note 2
22.50
Refer Note 4
0.39
0.06
Refer Note 2
1540
0.39
0.20
Refer Note 2
7.82
1540.10
0.39
2.50
Refer Note 3
7.62
6.94
1367.02
0.39
2.97
Refer Note 3
7500
0.17
6.94
1367
0.39
0.07
Refer Note 2
1.08
7500
0.17
6.94
1367
4.50
Refer Note 5
2.09
6.94
1367
0.81
Refer Note 2
1.77
Refer Note 3
Refer Note 2
51
Straight Duct
1600 675
1.08
7500
52
Reducer
1600 675
1.08
7500
6.94
1367.02
0.12
550 2025 1.11375 7500
6.73
1325.59
0.11
0.39 0.12
0.007 0.11
53
Straight Duct
550 2025 1.11375 7500
0.30
6.73
1326
0.39
0.12
54
Plenum
5000 900
4.5
7500
1.80
1.67
328
0.39
10.00
55
Straight Duct
1100 550
0.605
3750
0.10
6.20
1220
0.39
0.04
Refer Note 2
Non-return 1100 550 damper
0.605
3750
0.10
6.20
1220
50.00
Refer Note 8
56
Page 63 of 81
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE BUILDING ROOF MOUNTED PACKAGE UNIT S.No. Description
W
H
Air Area Velocity Velocity Flow Equivalent hv= a=H×W =Q/a V=Q/a nhv1 Q Length(m) (V/4005)² (m²) (m/s) (FPM) (L/s)
nhv2 n(hv2-hv1)
Pressure Total Drop Pressure (Pa/m) Drop(Pa)
Remarks
57
Straight Duct
1100 550
0.605
3750
0.21
6.20
1220
0.39
0.08
Refer Note 2
58
Bend, 20°
1100 550
0.605
3750
1.42
6.20
1220.15
0.39
0.55
Refer Note 3
59
Straight Duct
1100 550
0.605
3750
0.47
6.20
1220
0.39
0.18
Refer Note 2
60
Bend, 17°
1100 550
0.605
3750
1.21
6.20
1220.15
0.39
0.47
Refer Note 3
61
Straight Duct
1100 550
0.605
3750
1.03
6.20
1220
0.39
0.40
Refer Note 2
62
Sound Attenuator (SD)
1100 550
0.605
3750
1.20
6.20
1220
75.00
Refer Note 6
63
Straight Duct
1100 550
0.605
3750
0.23
6.20
1220
0.09
Refer Note 2
64
Reducer
1100 550
0.605
3750
6.20
1220.15
0.09
6.96
Refer Note 3
900
800
0.72
3750
5.21
1025.26
0.07
0.39 0.09
0.028 0.07
65
Straight Duct
900
800
0.72
3750
0.24
5.21
1025
0.39
0.09
Refer Note 2
66
Straight Duct(RD)
900
800
0.72
3364
0.24
4.67
920
0.39
0.09
Refer Note 2
67
Reducer
900
800
0.72
3364
4.67
919.73
0.05
5.60
Refer Note 3
1100 550
0.605
3364
5.56
1094.55
0.07
1100 550
0.605
3364
5.56
1095
0.06
Refer Note 2
68
Straight Duct(RD)
0.15
Page 64 of 81
0.05
0.022 0.08 0.39
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE BUILDING ROOF MOUNTED PACKAGE UNIT S.No. Description
69
Sound Attenuator (RD)
W
H
Air Area Velocity Velocity Flow Equivalent hv= a=H×W =Q/a V=Q/a nhv1 Q Length(m) (V/4005)² (m²) (m/s) (FPM) (L/s)
1100 550
0.605
3364
1.20
5.56
1095
nhv2 n(hv2-hv1)
Pressure Total Drop Pressure (Pa/m) Drop(Pa)
Remarks
67.50
Refer Note 6
70
Straight Duct(RD)
1100 550
0.605
3364
0.15
5.56
1095
0.39
0.06
Refer Note 2
71
Bend, 49°
1100 550
0.605
3364
3.48
5.56
1094.55
0.39
1.36
Refer Note 3
72
Straight Duct(RD)
1100 550
0.605
3364
0.62
5.56
1095
0.39
0.24
Refer Note 2
73
Bend, 49°
1100 550
0.605
3364
3.48
5.56
1094.55
0.39
1.36
Refer Note 3
74
Straight Duct(RD)
1100 550
0.605
3364
0.19
5.56
1095
0.39
0.07
Refer Note 2
75
Non-return 1100 550 damper
0.605
3364
0.10
5.56
1095
50.00
Refer Note 8
76
Straight Duct(RD)
1100 550
0.605
3364
0.20
5.56
1095
0.39
0.08
Refer Note 2
77
Plenum
5000 900
4.5
6728
1.80
1.50
294
0.39
10.00
78
Straight Duct(RD)
1850 550
1.0175
6728
0.30
6.61
1302
0.39
0.12
Refer Note 2
79
Expension (RD)
625 1550 0.96875 6728
6.95
1367.13
0.12
2.53
Refer Note 4
1850 550
6.61
1301.63
0.11
1.0175
6728
0.11
0.010 0.10
80
Straight Duct(RD)
625 1550 0.96875 6728
0.15
6.95
1367.13
0.39
0.06
Refer Note 2
81
Bend, 39°
625 1550 0.96875 6728
3.30
6.95
1367.13
0.39
1.29
Refer Note 3
Page 65 of 81
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE BUILDING ROOF MOUNTED PACKAGE UNIT S.No. Description
W
H
Air Area Velocity Velocity Flow Equivalent hv= a=H×W =Q/a V=Q/a nhv1 Q Length(m) (V/4005)² (m²) (m/s) (FPM) (L/s)
nhv2 n(hv2-hv1)
Pressure Total Drop Pressure (Pa/m) Drop(Pa)
Remarks
82
Straight Duct(RD)
625 1550 0.96875 6728
0.69
6.95
1367.13
0.39
0.27
Refer Note 2
83
Bend, 39°
625 1550 0.96875 6728
3.30
6.95
1367.13
0.39
1.29
Refer Note 3
84
Straight Duct(RD)
625 1550 0.96875 6728
0.17
6.95
1367.13
0.39
0.07
Refer Note 2
6.95
1367
85
Fire Damper 625 1550 0.96875 6728
2.50
86
Straight Duct(RD)
625 1550 0.96875 6728
0.21
6.95
1367.13
0.39
0.08
Refer Note 2
87
Bend, 90°
625 1550 0.96875 6728
7.62
6.95
1367.13
0.39
2.97
Refer Note 3
88
Straight Duct(RD)
625 1550 0.96875 6093
0.40
6.29
1238.10
0.39
0.16
Refer Note 2
89
Straight Duct(RD)
1225 625 0.76563 6093
0.50
7.96
1566.58
0.39
0.20
Refer Note 2
90
Bend, 90°
625 1225 0.76563 6093
7.01
7.96
1566.58
0.39
2.73
Refer Note 3
91
Straight Duct(RD)
1225 625 0.76563 6093
0.45
7.96
1566.58
0.39
0.18
Refer Note 2
92
Straight Duct(RD)
1225 625 0.76563 6093
0.10
7.96
1566.58
0.39
0.04
Refer Note 2
93
Volume Control Damper
1225 625 0.76563 6093
7.96
1566.58
12.50
Refer Note 4
94
Straight Duct(RD)
1225 625 0.76563 6093
7.96
1566.58
0.20
Refer Note 2
95
Reducer
1225 625 0.76563 6093
7.96
1566.58
0.15
9.14
Refer Note 3
1400 625
6.96
1370.75
0.12
0.875
6093
0.51
Page 66 of 81
0.39 0.16
0.037 0.12
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE BUILDING ROOF MOUNTED PACKAGE UNIT S.No. Description
W
H
Air Area Velocity Velocity Flow Equivalent hv= a=H×W =Q/a V=Q/a nhv1 Q Length(m) (V/4005)² (m²) (m/s) (FPM) (L/s)
96
Straight Duct(RD)
1400 625
0.875
6093
97
Expension (RD)
1200 625
0.75
1400 625
1.65
6.96
1370.75
4781
6.37
1254.86
0.10
0.875
4781
5.46
1075.59
0.07
nhv2 n(hv2-hv1)
Pressure Total Drop Pressure (Pa/m) Drop(Pa) 0.39
0.09
0.024
Remarks
0.64
Refer Note 2
6.06
Refer Note 4
0.07
98
Straight Duct(RD)
1200 625
0.75
4781
0.75
6.37
1254.86
0.39
0.29
Refer Note 2
99
Bend, 90°
1200 625
0.75
4513
7.01
6.02
1184.51
0.39
2.73
Refer Note 3
100
Straight Duct(RD)
1200 625
0.75
4513
4.43
6.02
1184.51
0.39
1.73
Refer Note 2
101
Expension (RD)
6.83
1345.05
0.11
9.79
Refer Note 4
5.41
1064.83
0.07
950
625 0.59375 4057
1200 625
0.75
4057
0.10
0.039 0.07
102
Straight Duct(RD)
950
625 0.59375 4057
2.93
6.83
1345.05
0.39
1.14
Refer Note 2
103
Bend, 12°
950
625 0.59375 3432
0.85
5.78
1137.84
0.39
0.33
Refer Note 3
104
Straight Duct(RD)
950
625 0.59375 3432
0.83
5.78
1137.84
0.39
0.32
Refer Note 2
105
Expension (RD)
650
625 0.40625 2186
5.38
1059.24
0.07
8.65
Refer Note 4
950
625 0.59375 2186
3.68
724.74
0.03
0.07
0.035 0.03
106
Straight Duct(RD)
650
625 0.40625 2186
1.61
5.38
1059.24
0.39
0.63
Refer Note 2
107
Bend, 29°
650
625 0.40625 2186
1.67
5.38
1059.24
0.39
0.65
Refer Note 3
Page 67 of 81
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE BUILDING ROOF MOUNTED PACKAGE UNIT S.No. Description
W
H
Air Area Velocity Velocity Flow Equivalent hv= a=H×W =Q/a V=Q/a nhv1 Q Length(m) (V/4005)² (m²) (m/s) (FPM) (L/s)
nhv2 n(hv2-hv1)
Pressure Total Drop Pressure (Pa/m) Drop(Pa)
Remarks
108
Straight Duct(RD)
650
625 0.40625 2186
4.94
5.38
1059.24
0.39
1.93
Refer Note 2
109
Bend, 63°
650
625 0.40625 1418
3.63
3.49
687.10
0.39
1.41
Refer Note 3
110
Straight Duct(RD)
650
625 0.40625 1418
0.20
3.49
687.10
0.39
0.08
Refer Note 2
111
Expension (RD)
400
625
1418
5.67
1116.54
0.08
11.23
Refer Note 4
650
625 0.40625 1418
3.49
687.10
0.03
2.74
540.16
0.54
Refer Note 2
4.92
Refer Note 4
0.25
112
Straight Duct(RD)
400
625
0.25
686
113
Expension (RD)
400
425
0.17
686
4.04
794.35
0.04
400
625
0.25
686
2.74
540.16
0.02
1.39
0.07
0.045 0.03 0.39
0.04
0.020 0.02
114
Straight Duct(RD)
400
425
0.17
686
2.98
4.04
794.35
0.39
1.16
Refer Note 2
115
Bend, 9°
400
425
0.17
686
0.37
4.04
794.35
0.39
0.14
Refer Note 3
116
Straight Duct(RD)
400
425
0.17
686
2.27
4.04
794.35
0.39
0.88
Refer Note 2
117
Expension (RD)
175
425 0.07438
175
2.35
463.18
0.01
2.51
Refer Note 4
400
425
175
1.03
202.64
0.00
0.17
0.01
0.010 0.00
118
Straight Duct(RD)
175
425 0.07438
175
1.63
2.35
463.18
0.39
0.63
Refer Note 2
119
Bend, 29°
175
425 0.07438
175
0.69
2.35
463.18
0.39
0.27
Refer Note 3
Page 68 of 81
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE BUILDING ROOF MOUNTED PACKAGE UNIT S.No. Description
W
H
Air Area Velocity Velocity Flow Equivalent hv= a=H×W =Q/a V=Q/a nhv1 Q Length(m) (V/4005)² (m²) (m/s) (FPM) (L/s)
220
Straight Duct(RD)
175
425 0.07438
175
221
Volume Control Damper
200
200
0.04
58
200
200
0.04
58
600
150
0.09
58
222
223
Flexible Duct Curved Linear slot diffuser (RD)
1.83
1.00
2.35
463.18
1.45
285.43
1.45
285.43
0.64
126.86
Notes: 1 Refer attached EH Price Catalogue of Laminar flow diffuser Duct Designed at 0.408 Pa/m 2 Refer Carrier Hand Book Table attached 3 Refer ATAI Catalogue of volume control damper attached 4 Refer ATAI Catalogue of fire damper attached 5 Refer Catalogue of Sound Attenuator attached 6 Refer Catalogue of Curved Linear slot diffuser attached 7 Refer Catalogue of Non Return Damper attached 8 SD- Supply Duct 9 RD- Return Duct 10
Page 69 of 81
nhv2 n(hv2-hv1)
Pressure Total Drop Pressure (Pa/m) Drop(Pa) 0.39
0.39
Remarks
0.71
Refer Note 2
5.00
Refer Note 4
0.39
Refer Note 2
3.50
Refer Note 7
Total=
529.46
Safety 5% Grand Total= Say
52.95 582.41 582
Friction Loss of Reducers of 60°, n=1.02 (page 43 CHB) For Prototype Building Duct Duct S.No. Height Width W D 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
450 350 500 450 600 500 650 600 700 650 650 700 1300 1200 1000 1300 1600 550 1200 900 550 900 625 550 1225 1400 1400 1200 1200 950 950 650 650 400 400 175 450 450 600 600 400 400
450 375 575 575 575 575 700 700 700 700 600 700 625 600 675 625 675 2025 550 800 1850 800 1550 1850 625 625 625 625 625 625 625 625 625 625 425 425 450 575 700 575 425 625
Equivalent Diameter of X- Area of Duct Duct m² d=sqrt(W*D) 450 0.159 362 0.103 536 0.226 509 0.203 587 0.271 536 0.226 675 0.357 648 0.330 700 0.385 675 0.357 624 0.306 700 0.385 901 0.638 849 0.565 822 0.530 901 0.638 1039 0.848 1055 0.874 812 0.518 849 0.565 1009 0.799 849 0.565 984 0.760 1009 0.799 875 0.601 935 0.687 935 0.687 866 0.589 866 0.589 771 0.466 771 0.466 637 0.319 637 0.319 500 0.196 412 0.133 273 0.058 450 0.159 509 0.203 648 0.330 587 0.271 412 0.133 500 0.196
Flow m³/s 0.490 0.490 1.020 1.020 1.120 1.120 1.904 1.904 2.107 2.107 2.207 2.207 3.363 3.363 3.910 3.910 5.487 5.487 2.744 2.744 2.956 2.956 5.911 5.911 5.126 5.126 4.215 4.215 3.119 3.119 1.969 1.969 1.154 1.154 0.201 0.201 1.020 1.020 1.408 1.408 0.666 0.666
S.P. Loss= Velocity Velocity hv= n(hv2 - hv1) m/s FPM (V/4005)² in wg 3.08 4.76 4.52 5.02 4.14 4.96 5.33 5.77 5.48 5.90 7.21 5.74 5.27 5.95 7.38 6.13 6.47 6.28 5.30 4.85 3.70 5.23 7.77 7.40 8.53 7.46 6.14 7.16 5.30 6.69 4.22 6.17 3.62 5.88 1.51 3.44 6.42 5.02 4.27 5.20 4.99 3.39
607 936 890 989 814 977 1049 1137 1078 1161 1419 1129 1038 1171 1453 1207 1274 1235 1043 956 729 1030 1530 1457 1679 1469 1208 1409 1043 1317 832 1215 712 1158 296 678 1263 989 841 1023 982 668
0.023 0.055 0.049 0.061 0.041 0.059 0.069 0.081 0.072 0.084 0.126 0.080 0.067 0.086 0.132 0.091 0.101 0.095 0.068 0.057 0.033 0.066 0.146 0.132 0.176 0.135 0.091 0.124 0.068 0.108 0.043 0.092 0.032 0.084 0.005 0.029 0.099 0.061 0.044 0.065 0.060 0.028
0.032 0.012 0.019 0.012 0.012 -0.047 0.019 -0.042 -0.006 -0.011 0.034 -0.014 -0.042 0.034 0.041 0.050 0.053 0.024 -0.039 0.022 -0.033
1200 400
550 625
812 500
0.518 0.196
2.744 0.666
5.30 3.39
732 668
0.033 0.028
-0.006
ype Building S.P. Loss= n(hv2 - hv1) Pa. 8.08 2.95 4.64 3.04 2.95 -11.73 4.68 -10.39 -1.54 -2.76 8.41 -3.48 -10.50 8.38 10.30 12.49 13.23 5.90 -9.83 5.42 -8.25
0.484288 0.668515 1.152803
0.682
-1.42
Summary of External Static Pressure of Package Rooftop Unit
External Static Pressure Calculation for supply air duct
174 Pascal
External Static Pressure Calculation for return air duct
166 Pascal
Total Design External Static Pressure
340 Pascal
Proposed Package Rooftop Unit External Static Pressure
350 Pascal
S.No. 1 2 3 4 5 6 7 8 9 10 11 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
S.No. 38 39 40 41 42 43 44 45 46 47
Additional Equivalent Length of Straight Duct Due to Radius Elbow With Vanes Duct Duct Additional Width Height Length (m) mm mm 2400 1200 13.72 2400 900 10.97 2400 750 9.45 2400 600 10.06 2400 500 8.53 1800 1200 13.41 1800 900 10.06 1800 750 8.53 1800 600 8.84 1800 500 7.01 1800 400 5.49 1800 300 5.18 1500 1200 12.50 1500 900 9.45 1500 750 7.62 1500 600 8.23 1500 500 6.71 1500 400 4.88 1500 300 4.57 1200 1200 10.67 1200 900 7.92 1200 750 7.01 1200 600 7.32 1200 500 5.79 1200 400 4.57 1200 300 4.27 1200 250 3.66 1200 200 2.44 1050 1050 8.53 1050 900 7.32 1050 750 6.40 1050 600 6.40 1050 500 5.49 1050 400 4.27 1050 300 3.66 1050 250 3.35 1050 200 2.44 Additional Equivalent Length of Straight Duct Due to Radius Elbow With Vanes Duct Duct Duct Duct Additional Additional Width Height S.No. Width Height Length (m) Length (m) mm mm mm mm 900 900 6.71 75 400 250 1.83 900 750 5.79 76 400 200 1.52 900 600 6.10 77 400 150 1.22 900 500 5.18 78 300 300 2.13 900 400 3.96 79 300 250 1.83 900 300 3.35 80 300 200 1.52 900 250 3.05 81 300 150 1.22 900 200 2.44 82 250 250 1.52 800 800 5.79 83 250 200 1.22 800 750 5.49 84 250 150 0.91
S.No. 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74
Additional Equivalent Length of Straight Duct Due to Radius Elbow With Vanes Duct Duct Duct Duct Additional Additional Width Height S.No. Width Height Length (m) Length (m) mm mm mm mm 800 600 5.79 85 200 200 1.52 800 500 4.88 86 200 150 1.22 800 400 3.66 87 150 150 0.91 800 300 3.05 800 250 2.44 800 200 2.13 700 700 4.27 700 600 5.18 700 500 4.57 700 400 3.35 700 300 3.05 700 250 2.44 700 200 2.13 600 600 3.96 600 500 3.35 600 400 3.05 600 300 2.74 600 250 2.44 600 200 2.13 500 500 4.57 500 400 3.66 500 300 2.74 500 250 2.44 500 200 2.13 500 150 1.83 400 400 2.44 400 300 2.13
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED PACKAGE UNIT S.No.
Size of Duct Elements
Duct Elements
Equivalent Length(m)
Pressure Total Drop Pressure (Pa/m) Drop(Pa) ………… 10 ……
Remarks
1
Laminar flow diffuser(SD) 600mm×600mm
………..
2
Straight Duct(SD)
59
59
0.408
24.07
Refer Note 2
3
Straight Duct(RD)
34
34
0.408
13.87
Refer Note 2
4
Reducer(SD)
450×450/350×375
…………….
8.08
Refer Note 3
5
Reducer(SD)
500×575/450×575
2.95
do
6
Reducer(SD)
600×575/500×575
4.46
do
7
Reducer(SD)
650×700/600×700
3.04
do
8
Reducer(SD)
700×700/650×700
2.95
do
9
Reducer(SD)
650×600/700×700
11.73
do
10
Reducer(SD)
1300×625/1200×600
4.68
do
11
Reducer(SD)
1000×675/1300×625
10.39
do
12
Reducer(SD)
1600×675/550×2025
1.54
do
13
Reducer(SD)
1200×550/900×800
2.76
do
14
Reducer(SD)
450×450/450×575
9.83
do
15
Reducer(SD)
600×700/600×575
5.42
do
16
Reducer(RD)
550×1850/900×800
8.41
do
17
Reducer(RD)
625×1550/550×1850
3.48
do
18
Reducer(RD)
1225×625/1400×625
10.50
do
19
Reducer(RD)
1400×625/1200×625
8.38
do
20
Reducer(RD)
1200×625/950×625
10.30
do
21
Reducer(RD)
950×625/650×625
12.49
do
22
Reducer(RD)
650×625/400×625
13.23
do
23
Reducer(RD)
400×425/175×425
5.90
do
24
Reducer(RD)
400×425/400×625
8.25
do
25
Bend 22° (SD), 2no.
350mm×375mm
4.88
0.408
1.99
do
26
Bend 22° (SD), 1no.
600mm×700mm
5.18
0.408
2.11
do
…………… …. …………… …. …………… …… …………… …… …………… …… …………… …… …………… …… …………… …… …………… …… …………… …… …………… ……
Page 78 of 81
………… …… ………… … ………… ….. ………… …. ………… …. ………… …. ………… …. ………… …. ………… …. ………… …. ………… …. ………… ….
Refer Note 1
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED PACKAGE UNIT Equivalent Length(m)
Pressure Drop (Pa/m)
700mm×700mm
4.27
0.408
1.74
do
Bend 22° (SD), 2no.
550mm×2050mm
17.06
0.408
6.96
do
29
Bend 22° (RD), 1no.
950mm×625mm
6.40
0.408
2.61
do
30
Bend 22° (RD), 1no.
650mm×625mm
5.18
0.408
2.11
do
31
Bend 22° (RD), 1no.
400mm×425mm
3.66
0.408
1.49
do
32
Bend 22° (RD), 1no.
175mm×425mm
1.83
0.408
0.75
do
33
Bend 45° (SD), 2no.
1300mm×625mm
15.84
0.408
6.46
do
34
Bend 90°(SD), 2no.
350mm×375mm
4.88
0.408
1.99
do
35
Bend 90°(SD), 1no.
450mm×575mm
3.35
0.408
1.37
do
36
Bend 90°(SD), 1no.
650mm×700mm
4.27
0.408
1.74
do
37
Bend 90°(SD), 1no.
675mm×1000mm
6.40
0.408
2.61
do
38
Bend 90°(SD), 1no.
1600mm×675mm
8.84
0.408
3.61
do
39
Bend 90°(RD), 1no.
1200mm×625mm
7.00
0.408
2.86
do
40
Bend 90°(RD), 1no.
625mm×1225mm
7.00
0.408
2.86
do
41
Bend 90°(RD), 1no.
650mm×625mm
4.27
0.408
1.74
do
42
Bend 90°(RD), 1no.
625mm×1550mm
9.45
0.408
3.86
do
1000mm×675mm
………..
……….
22.50
Refer Note 4
200 mm dia.
………..
……….
2.50
Refer Note 4
1225mm×625mm
………..
……….
30.00
Refer Note 4
Duct Elements
Size of Duct Elements
27
Bend 22° (SD), 1no.
28
S.No.
43 44 45 46 47 48
Volume Control Damper at 7.38 m/s(SD) Volume Control Damper at 2.1 m/s (RD) Volume Control Damper at 8.53 m/s (RD) Fire Damper at 7.38 m/s (SD) Fire Damper at 7.22 m/s (RD) Sound Attenuator at 5.3 m/s (SD) Sound Attenuator at 5.3 m/s (RD) Curved Linear slot diffuser (RD)
1600mm×675mm 1550mm×625mm
Total Pressure Drop(Pa)
…………… ………… 4.00 ……. ……. …………… ………… 4.50 ……. …….
Remarks
Refer Note 5 Refer Note 5
1200mm×550mm
62.50
Refer Note 6
1200mm×550mm
62.50
Refer Note 6
600mm×200mm
13.50
Refer Note 7
51
Non Return Damper(SD) 900mm×800mm
50.00
Refer Note 8
52
Non Return Damper(RD) 900mm×800mm
50.00
Refer Note 8
49 50
Page 79 of 81
EXTERNAL STATIC PRESSURE CALCULATION PROTOTYPE ROOF MOUNTED PACKAGE UNIT S.No.
Duct Elements
Size of Duct Elements
Equivalent Length(m)
Pressure Total Drop Pressure (Pa/m) Drop(Pa) Sub 547.58 Total=
Add 5% safety factor 27.38 Total External Static 574.95 Pressure Say Notes: 1
Refer attached EH Price Catalogue of Laminar flow diffuser
2
Duct Designed at 0.408 Pa/m
3
Refer Carrier Hand Book Table attached
4
Refer ATAI Catalogue of volume control damper attached
5
Refer ATAI Catalogue of fire damper attached
6
Refer Catalogue of Sound Attenuator attached
7
Refer Catalogue of Curved Linear slot diffuser attached
8
Refer Catalogue of Non Return Damper attached
9
SD- Supply Duct
10
RD- Return Duct
Page 80 of 81
575
Remarks
Conversion 1 LPS= 1 CMH= 1 TR= 1 kg= 1 m= 1 bar= 1 m= 1" WC= gpm/ ton= total gpm= 1 m³/s= 1 m/s= U= 1 ft/100 ft=
2.12 0.5889 3.5159 2.2046 3.281 10.21 39.37008 248.78 24/ Δt= 2934 15850.32 196.8504 1 W/m²K= 98
CFM= CFM kW lb ft m of WC= inches Pa 1.5
15.85 USGPM=
14.5 PSI
US gpm FPM 0.1761 Btu/hr.ft.² °F Pa/m
245
3.6 CMH
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