8/8/2019 Car Park MV Calculation
1/7
Project: Shelford 23
Contractor : Noris
Location: Basement Car ParkSystem : Mechanical Ventilation
System
Eqv. Dia Area - A Cap - Q Vel - V VP Le ngth F ri- l os s F Ve l
Pr Fr. Pr St. Pr Drop
W (m) H (m) (m) (m2) (m3/s) (m/s) (V/1.3)2 (m) C Pa/m ( Pa) (Pa)
(Pa)
1 Grilles 0.500 0.200 - - - - - - 9.00 Annix A
2 Tee 0.500 0.200 0.34 0.089 0.20 2.24 2.97 0.32 0.95 0.95
3 Straight Duct 0.450 0.150 0.27 0.059 0.40 6.78 27.24 2.10 2.00
4.20 4.20
4 Elbow 0.450 0.150 0.27 0.059 0.40 6.78 27.24 0.22 5.99 5.995
Straight Duct 0.400 0.150 0.26 0.053 0.40 7.53 33.52 3.40 2.00 6.80
6.80
6 Transition (@30) 0.800 0.150 0.35 0.096 0.40 4.16 10.23 0.24
2.46 2.46
7 Straight Duct 0.800 0.150 0.35 0.096 0.80 8.32 40.94 0.35 2.00
0.70 0.70
8 Elbow 0.800 0.150 0.35 0.096 0.80 8.32 40.94 0.22 9.01
9.01
9 Straight Duct 0.800 0.150 0.35 0.096 0.80 8.32 40.94 1.20 2.00
2.40 2.40
10 Transition (@30) 0.500 0.250 0.38 0.114 0.80 7.02 29.18 0.09
2.63 2.63
11 S bend- 30 degree 0.500 0.250 0.38 0.114 0.80 7.02 29.18 0.12
3.50 3.50
12 Straight Duct 0.500 0.250 0.38 0.114 0.80 7.02 29.18 5.90
1.40 8.26 8.26
13 Elbow 0.500 0.250 0.38 0.114 0.80 7.02 29.18 0.22 6.42
6.42
14 Straight Duct 0.500 0.250 0.38 0.114 0.80 7.02 29.18 1.20
1.40 1.68 1.68
15 Transition (@30) 0.500 0.375 0.47 0.175 0.80 4.57 12.36 0.09
1.11 1.11
16 Straight Duct 0.500 0.375 0.47 0.175 1.19 6.81 27.41 19.00
1.00 19.00 19.00
17 Elbow 0.500 0.375 0.47 0.175 1.19 6.81 27.41 0.19 5.21
5.21
18 Straight Duct 0.500 0.375 0.47 0.175 1.19 6.81 27.41 2.65
1.00 2.65 2.65
19 Elbow 0.500 0.375 0.47 0.175 1.19 6.81 27.41 0.19 5.21
5.21
20 Straight Duct 0.500 0.375 0.47 0.175 1.19 6.81 27.41 5.10
1.00 5.10 5.10
21 Elbow 0.500 0.375 0.47 0.175 1.19 6.81 27.41 0.19 5.21
5.21
22 Straight Duct 0.500 0.375 0.47 0.175 1.19 6.81 27.41 1.20
1.00 1.20 1.20
23 Transition (@30) 0.600 0.500 0.60 0.281 1.19 4.24 10.64 0.09
0.96 0.96
24 Elbow 0.600 0.500 0.60 0.281 1.19 4.24 10.64 0.19 2.02
2.02
25 Straight Duct 0.600 0.500 0.60 0.281 2.38 8.47 42.45 9.47
1.10 10.42 10.42
26 Transition (@30) 0.725 0.500 0.66 0.337 2.38 7.06 29.46 0.09
2.65 2.65
27 Straight Duct 0.725 0.500 0.66 0.337 2.38 7.06 29.46 9.47
1.00 9.47 9.47
28 Elbow 0.725 0.500 0.66 0.337 1.19 3.53 7.38 0.19 1.40
1.40
29 Straight Duct 0.725 0.500 0.66 0.337 2.78 8.24 40.19 1.20
1.00 1.20 1.20
Static Pressure Losses Calculation
Sect;Size
Description Reference
Air Flow Capacity : 10000 CMH ( 2778 l/s)
Shelford 23- Carpark MV calculation Shelford-Car Park-SI 1 of
2
8/8/2019 Car Park MV Calculation
2/7
Project: Shelford 23
Contractor : Noris
Location: Basement Car ParkSystem : Mechanical Ventilation
System
Eqv. Dia Area - A Cap - Q Vel - V VP Le ngth F ri- l os s F Ve l
Pr Fr. Pr St. Pr Drop
W (m) H (m) (m) (m2) (m3/s) (m/s) (V/1.3)2 (m) C Pa/m ( Pa) (Pa)
(Pa)
Sect;Size
Description Reference
Air Flow Capacity : 10000 CMH ( 2778 l/s)
30 Transition (@30) 0.725 0.500 0.66 0.337 2.78 8.24 40.19 0.09
3.62 3.62
31 Straight Duct 0.725 0.500 0.66 0.337 2.78 8.24 40.19 1.20
1.00 1.20 1.20
32 Transition Duct 0.725 0.500 0.66 0.337 2.78 8.24 40.19 0.12
4.82 4.82
33 Silencer (maxi drop) 26.00 Annix B
34 Fan
35Silencer(maxi drop) 26.00 Annix C
36 Transition Duct 0.725 0.500 0.66 0.337 2.78 8.24 40.19 0.12
4.82 4.82
37 Straight Duct 0.725 0.500 0.66 0.337 2.78 8.24 40.19 0.45
1.00 0.45 0.45
38 Elbow 0.725 0.500 0.66 0.337 2.78 8.24 40.19 0.19 7.64
7.64
39 Straight Duct 0.725 0.500 0.66 0.337 2.78 8.24 40.19 1.75
1.00 1.75 1.75
40 Elbow with spliter 0.725 0.500 0.66 0.337 2.78 8.24 40.19
0.10 4.02 4.02
41 Elbow with spliter 0.725 0.500 0.66 0.337 2.78 8.24 40.19
0.10 4.02 4.02
42 Straight Duct 0.725 0.500 0.66 0.337 2.78 8.24 40.19 0.60
1.00 0.60 0.60
43 Transition Duct 1.200 1.000 1.20 1.124 2.78 2.47 3.62 0.12
0.43 0.43 Dog-house
44 Screen Net (80%) 1.200 1.000 1.20 1.124 2.78 2.47 3.62 0.10
0.36 0.36 ASHRAE
45 External Louver 1.200 1.000 1.20 1.124 - - - - - - - 30.00
Annix D
with 50% free area
Sub Total 252.53
Add 10% Safety Factor 25.25
Total Static Pressure 277.79
Shelford 23- Carpark MV calculation Shelford-Car Park-SI 2 of
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