Hydro-Cool Aftercoolers perform two essential functions that provide the necessary first step in conditioning pneumatic power. They reduce the temperature of the discharge air from the compressor to a safe operating range, and they remove substantial amounts of the entrained moisture.

Operation:
Compressed air passes through the tubes and water flows in the opposite direction through the shell. Countercurrent flow provides the most effective method of bringing the final air temperature close to the cooling water temperature. Baffles create turbulent water flow across the tubes, reducing the amount of cooling water used. The air to be cooled is directed through multiple tubes fitted with brass inserts which divide the flow into thinner streams, substantially increasing the heat transfer. Plain tubes allow "coring" where the inner portion of the air stream is not cooled.

Construction:
Hydro-Cool heat exchangers are compact. Standard models are 51" long and new high efficiency models are 59" long. In both fixed and removable tube bundles, the tubes are welded to the tube sheet. This combined with the short length results in a rugged unit that allows thermal expansion to be absorbed within the aftercooler. Standard materials of construction are copper tubes with carbon steel shells.

Separators for Water Removal:
As condensed water and other contaminants enter the separator from the aftercooler, a fixed impeller creates a vortex, whirling the air outward and downward against the vessel wall. The centrifugal action spins out the water which falls into the condensate claim area and can be drained automatically with an SAC float trap or electric drain valve.

FIXED TUBE BUNDLE = WF Series
REMOVABLE TUBE BUNDLE = WR Series

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