Compressed Air Facilities

Compressed Air Facilities

Compressed air facility supplies compressed air to all the facilities in CSIR-NAL Belur campus

• Two numbers of 4-stage centrifugal compressors with latest control system

• Three numbers of 2-stage reciprocating compressors driven by diesel engine

• Two numbers of 6-stage centrifugal compressors

• Air receiver capacity: 3600 m3.

 

The Facility comprises 3-Individual compressor plants(TURBO, DECS and NCAF) along with its associated dryer systems, Dryer Reactivation systems, Cooling water system, Cooling  Tower, Water Treatment Plants and network of Air ducting with Air Storage Receiver system. The specifications of systems given in the following table-1(A-H) and all the systems are shown in Figs.1-5.

 

  1. Turbo- compressor plant (year of Commissioning -1962)
  1. NCAF (New Compressor Air Facility) plant (year of Commissioning -2005)

Make: Associated Electrical Industries(AEI) , U.K.

No. of compressor plants: 02 (CENTRIFUGAL)

Motor Rating: 2800 HP, 11 KV (Each)

No. of Stages per Compressor : 06 (L.P-, H.P-2 Stages)

L.P.Cylinder (4 Stages)    H.P.Cylinder (2-stage)

R.P.M- 7400     R.P.M- 13285

Pressure Ratio: 6.3       Pressure Ratio: 2.2

 

Free Air Delivery (F.A.D) : 283 m3/min (Each)

Air Delivery pressure:165 psig

Storage charge up Time :2 Hours/compressor

Make: JOY-COOPER (U.S.A)

No. of compressor plants: 02 (CENTRIFUGAL)

No. of Stages per Compressor: 04

Motor Rating: 2815 HP, 11 KV (Each)

Free Air Delivery (F.A.D) : 283 m3/min (Each)

Air Delivery pressure:165 psig

Storage charge up Time :2 Hours/compressor

 

  1. Dryer Systems
  1. Cooling Tower(year of Commissioning - 2000)

 

No. of Dryer systems:03 (Turbo,DECS,NCAF)

No. of Dryer vessels:06

Type: Dual Adsorption type

Desiccant Used: Silica Gel Beads( Mobil-SORBEAD’R’ )

Capacity of Volume flow: 20000 SCFM

Desiccant load: 7500 Kg / Dryer vessel

Drying cycle:4 Hrs

Reactivation cycle: 8 Hrs

Outlet air Humidity:0.0001 lb/lb

Dewpoint: -38 deg C

Heater Rating :340 KW

Reactivation Temperature: 204 deg C

Make: Shriram Tower Tech Ltd.

Type: Induced Draught counter flow type

Structure:RCC

No. of cells: 03

No. of Fan blades/Cell :03

Type of Fan Blade: Adjustable pitch, FRP

Amount of water to be cooled : 1215 m3/ Hr.

Cooling Range: 8 - 9 deg C

Hold up volume of Basin:150000 Ltr.

Drift Loss: Less than 0.002%

 

  1. Old Water Treatment Plant (year of Commissioning - 1985 )
  1. New  Water Treatment Plant (year of Commissioning -2016)

 

Make: Ion Exchange (India) Ltd.

Process of Treatment: Ion Exchange

Design Capacity: 360 Ltrs/min

Output Between Regenerations (O.B.R): 200000 ltrs.

Water Quality maintained:

              pH  :7.0-7.5

Total Hardness: Less than 5 ppm

              Alkalinity : Less than 90 ppm

 

Make: Dexter Watertech

Process of Treatment: Ion Exchange

Design Capacity: 360 Ltrs/min

Output Between Regenerations (O.B.R): 200000 ltrs.

Water Quality maintained:

 pH   :7.0-7.5

Total Hardness: Less than 5 ppm

Alkalinity : Less than 90 ppm

 

  1.  

 

Total Storage Volume: 4500 m3

No. of Receiver Vessels: 07 (05 cylindrical + 02 Spherical)

 

 

Fig.1 Turbo- compressor

 

Fig.2 Diesel Engine Compressor

 

Fig.3 New Compressor Air Facility

 

Fig.4 Air receivers systems

 

Fig.5a New water treatment plant

 

Fig.5b Degasser system for new water treatment plant

 

Fig.5c Raw and soft water system for new water treatment plant


Last updated on : 14-06-2018 03:11:21pm