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Lift Well Pressurization Calculation for Exquisite
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Lift Well Pressurization Calculation for Exquisite
This calculation is used to pressurize ti liftwell in case of fire...
Author:
SalimMohammad
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LIFT WELL PRESSURIZATION CALCULATION FOR ,48 ACRE NORTH TOWN CHENNAI EKANTA TOWER TOWER C - (G+17)
Q
=
0.839 x A x (ΔP)1/2
Q
=
Volumetric Flow Rate in M3/Sec.
A
=
Flow Area in Sq. Mtr.
ΔP
=
Pressure Difference Maintained Across the Lift Door in Pascal ( 50 Pascal to be maintained as per NBC-2005)
0.83
=
Coefficient
Leakage Area Per Lift Door
=
0.065 Sq. Mtr. (As per ASHRAE Handbook of Application)
No. of Floors
=
Level- Ground Floor to 17th Floor = 17
Total Leakage Area
=
0.065x18
=
1.17 Sq.Mtr.
=
0.839 x 1.17 x (50)1/2
=
6.95 M3/Sec.
=
14609 CFM
Say
=
15000 CFM / Lift Well
2NOS. Selected Fan Capacity for two Lift Well
=
30000 CFM
Fan Static Pressure
=
40 MMWG
Calculated Power Consumption (BHP)
=
10.53
Calculated Power Consumption (IHP)
=
12.11
Selected Motor
=
15 HP
Selected Fan Capacity for one Lift Well
=
15000 CFM
Fan Static Pressure
=
40 MMWG
Calculated Power Consumption (BHP)
=
10.53
Calculated Power Consumption (IHP)
=
12.11
Selected Motor
=
15 HP
Total Leakage Air Flow (Q)
LIFT WELL PRESSURIZATION CALCULATION FOR ONE LIT WELL TOWER-1 to 9 IN ANANDA- (G+15)
0.839 x A x (ΔP)
1/2
Q
=
Q
=
Volumetric Flow Rate in M /Sec.
A
=
Flow Area in Sq. Mtr.
ΔP
=
Pressure Difference Maintained Across the Lift Door in Pascal ( 50 Pascal to be maintained as per NBC-2005)
0.83
=
Coefficient
Leakage Area Per Lift Door
=
0.051 Sq. Mtr. (As per ASHRAE Handbook of Application)
No. of Floors
=
Level- Ground Floor to 15th Floor = 16
Total Leakage Area
=
0.051x16
=
0.816 Sq.Mtr.
=
0.839 x 0.816 x (50)1/2
=
4.84 M3/Sec.
=
10248 CFM
Say
=
10500 CFM / Lift Well
Selected Fan Capacity for Two Lift Well
=
21000 CFM
Fan Static Pressure
=
40 MMWG
Calculated Power Consumption (BHP)
=
11.05
Selected Motor
=
12.5 HP
Total Leakage Air Fow (Q)
3
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