ELGi Equipments AB series oil-free screw air compressors

ELGi Equipments has enhanced the energy efficiency of its AB series oil-free screw air compressors realising improvements in specific power consumption and increases in free air delivery across the range.

Improvements in the AB series include an average 10% improvement on the turn down ratio across the variable frequency drive (VFD) range.

The series is available in power ratings from 11 to 110 kW, and the 75 to 110 kW models are the first in the series to now come as standard with super-premium efficiency IE4 motors, which exceed the current Minimum Energy Performance Standards (MEPS) of Australia and New Zealand for three-phase electric motors. Using these motors provides further energy efficiency and reliability gains as well as lower waste heat output.

ELGi’s airends are equipped with in-house developed η-V profile rotors which reduce pressure losses and precise rotor clearances. Compared to other water-injected units, the AB series airends run at slow speeds, resulting in longer bearing life, higher reliability and lower noise levels.

The AB series has a closed loop circuit which does not need RO water or any other form of water purifying system. They also come with an auto water replenishment mechanism, as well as built-in sensation cycle. This reduces power consumption, eliminates any requirement to replace an RO element which therefore reduces maintenance costs.