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Electric Powered Screw Air Compressors (EPSAC)
Tel: +603 - 5192 1427
Fax: +603 - 5192 1429

Electric Powered Screw Air Compressors (EPSAC)

TandemTwo-Stage Screw Compressor

 

75 - 160 kW / 16 - 30.7 m3/min 
100 - 215 HP / 565 - 1085 cfm

Energy Saver: 
Elgi Tandem compressor is a two-stage compressor, having high energy-efficiency . the compression is done in two-stages to improve the volumetric efficiency and thereby contributing to decrease in power consumption and increase in saving energy costs. Tandem air compressors consume 8-12% less power and offer a return on investment within 8-15 months when compared to single-stage compressors

For the same discharge pressure of 9 bar, a single-stage compressor has compression ratio of 1:9 (Ratio of suction to discharge of a screw airend). the compression ratio is divided between the two stages of tandem airend and is about 1:3 in each stages of two-stage tandem compressors. This makes the airend more reliable and efficient due to smaller loads on bearings. The volumetric efficiency of two-stage is better than single-stage compression 

Dual Control mode: 
*Auto dual control, operates on modulation mode from 100-60% loading and in load-unload mode for loads below 60% 
*Constant pressure due to gradual opening or closing of suction valve with respect to demand (multi-point control) 
*Option for selecting load-unload / modulation auto dual mode for all large screw compressor models as standard feature 
*Smooth operation by modulation , ensures longer life of the airend, valves and all mechanical components. Also, ensures no sudden spikes or drop in line pressure 
*Lowest power consumption in its class of compressor controls, even with fluctuating loads

 

Typical life-time of compressed air over 10 years

Energy savings: 
The annual power cost for a 100kW compressor running on continuous duty is US$126000 while a 
Tandem two-stage compressor uses US$111000 and saves power costs annually by US$15000

Tandem two-stage screw air compressor range
Model Capacity Working Pressure Motor Power
  cfm m3/min bar HP kW
Dimension lxbxh (mm) : 3915 x 1600 x 1910
EE75 - 8 565 16.00 7 100 75
EE75 - 9 535 15.15 8 100 75
EE75 - 10.5 470 13.31 9.5 100 75
EE75 - 13.5 405 11.47 12.5 100 75
EE90 - 8 650 18.41 7 120 90
EE90 - 9 590 16.71 8 120 90
EE90 - 10.5 540 15.29 9.5 120 90
EE90 - 13.5 465 13.17 12.5 120 90
EE110 - 8 800 22.65 7 150 110
EE110 - 9 750 21.24 8 150 110
EE110 - 10.5 691 19.57 9.5 150 110
EE110 - 13.5 580 16.42 12.5 150 110
EE132 - 8 965 27.33 7 180 132
EE132 - 9 881 24.95 8 180 132
EE132 - 10.5 832 23.60 9.5 180 132
EE132 - 13.5 695 19.70 12.5 180 132
EE160 - 8 1085 30.70 7 215 160
EE160 - 9 1076 30.50 8 215 160
EE160 - 10.5 990 28.00 9.5 215 160
EE160 - 13.5 820 23.20 12.5 215 160

* Due to continuous engineering improvements, specifications are subject to change without prior notice 
* Available in air-cooled and water-cooled variants 
* Max . pressure or unload pressure for al models is 1 bar above the working pressure. For eg: for 
EE90 -8, working pressure is 7 bar and max pressure is 8 bar 
* Performance stated as per ISO 1217, Ed.3; Annexure C-1996 
* Displaced here is the standard range. For any customized requirements, please contact our sales office

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