8/2/2019 Compressor Air Calculation

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Project: Intel.

COMPRESSOR AIR REQUIRMENT

1. Compressor Air Requirement - 228 cfm

PROPOSED COMPRESSOR SIZE- 228 CFM

Pressure - 10 bar

OPTION 1

Assume Pipe Size - 40 mm

Pipe Length - 70 m

Equivalent length of 90 bends - 4no x 6.2 24.8mTotal Pipe Length - 70+24.8 =94.8m

Maximum Allowable pressure Drop - 1psi

Maximum Allowable CFM for 40mm Pipe- 143.29cfm (As per Annexure 1)

Above Pipe Size is not sufficient for this Application so considering next Pipe Size 63mm.

OPTION 2

Assume Pipe Size - 63 mm

Pipe Length - 70 m

Equivalent length of 90 bends - 4no x 6.2 24.8mTotal Pipe Length - 70+24.8 =94.8m

Maximum Allowable CFM for 63mm Pipe- 462.50cfm

Pressure loss for 63mm pipe at 462.50cfm - 1psi (As per Annexure 2)

)

PROPOSED Air PIPING SIZE = 63 mm (For Future Requirement)

Last Modified: 29.09.10 1 POTENTIALSERVICE CONSULTANTS (P)

Rev: R0

8/2/2019 Compressor Air Calculation

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Project: Intel.

CONSIDERING COOLING WATER PIPE SIZE= 25 mm

FRICTIONAL LOSS (Per Meter Length of Pipe in bars) Pf = 6.05 x (10)5 x (Q) 1.85

1.85 x (D) 4.87

Q = 60 Lpm

C = 120(Constant for GI Pipe)

D = Mean bore of the Pipe in mm

Pf = 6.05 x (10)5 x (60)1.85

(120)1.85 x (25)4.87

= 0.02611 bar/m

Total Length of the Pipe - 24m

24 x 0.02611

.6267 bar

CONSIDERING COOLING WATER PIPE SIZE= 32 mm

FRICTIONAL LOSS (Per Meter Length of Pipe in bars) Pf = 6.05 x (10)5 x (Q) 1.85

1.85 x (D) 4.87

Q = 60 Lpm

C = 120(Constant for GI Pipe)

D = Mean bore of the Pipe in mm

Pf = 6.05 x (10)5 x (60)1.85

(120)1.85 x (32)4.87

= 0.007848 bar/m

Total Length of the Pipe - 24m

24 x 0.007848

.188bar

PROPOSED COOLING WATER PIPING SIZE = 32mm

Last Modified: 29.09.10 2 POTENTIALSERVICE CONSULTANTS (P)

Rev: R0

8/2/2019 Compressor Air Calculation

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Project: Intel.

Air Receiver Size

Last Modified: 29.09.10 3 POTENTIALSERVICE CONSULTANTS (P)

Rev: R0

Air Receiver Size(The Traditional way Vs The Right Way)

C x Pa

V = T xV = Receiver Volume ft3

P1 -P2T =

Time allowed (minutes) for PressureDropP1 - P2

C = Air Demand, CFM of free air

C = 238 cfm Pa = Absolute atmospheri Pressure,psia

Pa = 14.7 psia P1 = Intial recerver Pressure,psig

T = 15 Secs P2 = Final receiver Pressure psig

P1 - P2 = 10 psig 1 ft3 = 0.02831685 m3

V = 87.465 ft3V = 2.48 m3