Compressor Air Calculation

Project: Intel. COMPRESSOR AIR REQUIRMENT 1. Compressor Air Requirement

-

228 cfm

PROPOSED COMPRESSOR SIZE

-

228 CFM

Pressure

-

10 bar

Assume Pipe Size

-

40 mm

Pipe Length

-

70 m

Equivalent length of 90 º bends

-

4no x 6.2  24.8m

Total Pipe Length

-

70+24.8 =94.8m

Maximum Allowable pressure Drop

-

1psi

OPTION – 1

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 º bends

-

4no x 6.2  24.8m

Total 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

Last Modified: 29.09.10 Rev: R0

= 63 mm (For Future Requirement)

1

POTENTIALSERVICE CONSULTANTS (P) Ltd.,

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 Last Modified: 29.09.10 Rev: R0

2

= 32mm POTENTIALSERVICE CONSULTANTS (P) Ltd.,

Project: Intel.

Air Receiver Size

Air Receiver Size

C x Pa V=

C Pa T P1 - P2

= = = =

V = V =

Tx

228 14.7 15 13 64.45385 1.83

Last Modified: 29.09.10 Rev: R0

P1 -P2 cfm psia Secs psig

V= T= C= Pa = P1 = P2 = 1 ft3 =

Receiver Volume ft3 Time allowed (minutes) for Pressure DropP1 - P2 Air Demand, CFM of free air Absolute atmospheri Pressure,psia Intial receiver Pressure,psig Final receiver Pressure psig 0.02831685 m3

ft3 m3

3

POTENTIALSERVICE CONSULTANTS (P) Ltd.,