The rotating water sprinkler head distributes the hot water within forming a fine spray, and hence does not need the conventional type of moisture eliminator. This is because the water header has large number of holes giving a 'steam' type flow directly into the infill. Towers with fixed nozzles cannot obtain the coverage, which is needed for optimum cooling. We should not overlook that in rectangular type towers, eliminators provide a pressure drop which evens out the flow particularity into the corner.

The 'Advance' tower being round, plus its conical fan inlet can better provide an even air flow through the infill, with a lower pressure drop, and without the additional pressure drop caused by the eliminator needed on other towers.

Fan KW depends on the mass of air delivered, the pressure generated and the blade efficiency. "Advance" air volumes are similar to competitor's sizes. The influencing factor for lower power is 'pressure' and 'efficiency'.

1.	The "Advance" tower has large air inlet area, with low air velocity, low pressure drop.
2.	The "Advance" tower is of the induced draft type.

The fan is in the ideal position, to discharge the air at a high velocity upward and allow natural convection to prevent recirculation, as can happen with the forced draft tower arrangement, where air leaves the eliminators at low velocity.