• Spantech Engineers Private Limited

Water Cooled Aftercoolers

The Water Cooled Aftercoolers perform two essential functions that provide the necessary first step in conditioning of compressed air. They reduce the temperature of air to a safe operating range, as well as remove the moisture condensed during the cooling process. These are of shell & tube construction with the air passing through the tubes and water flowing in the opposite direction in the shell. Closely spaced baffles & tubes ensure high velocity & turbulence on both shell & tube sides as well use of high conductivity copper tubes, leads to high heat transfer efficiency. Moisture condensed in the cooling process is carried away with the air and separated in a Moisture Separator, bolted directly to the shell & tube assembly. A central baffle forces air to change the direction twice, resulting in effective separation of the condensed moisture. The collected moisture is periodically drained. Rugged shell is fabricated from carbon steel pipes & flanges. Tubes fitted in the tube sheets by expansion machine, which gives uniform & leak proof fit. A removable tube sheet fitted into shell flange with gap of just 0.5mm to ensure effective sealing by 'O' Ring. By a minor modification, the Aftercooler can also be used as Oil Cooler for Screw Compressor, DG Set & other machines (by removing Moisture Separator); Intercooler for Reciprocating Compressor (by adding Suction Drum); Compressed Air Dryer (by using chilled water, brine or refrigerant as cooling medium.); and as Heat Exchanger for cooling systems required for Moulding Machines, Generators & other Heavy Machinery.