Reversed-flow Closed Circuit Cooling TowerThe cooled medium (soft water or other liquid) circulates through the coils in a closed-loop cooling tower, with the fluid's heat being absorbed by the walls of the coils.

Then, the heat from the tube wall is expelled out of the machine by the fan on the upper side of the cooler.

Air flow direction of the cooling tower: Dry cold air enters from the intake ports on both sides at the bottom of the coil cooler, then flows through the coil cooler to absorb heat, and the moist, saturated air exits from the bottom to the top of the cooler, being exhausted into the air above the cooling tower.