TP26-01 Redefining fan performance: Tandem Blade Technology in Industrial Cooling ApplicationsThis paper presents a field based evaluation of Tandem Blade technology applied to axial fans used in cooling towers and air cooled heat exchangers. Originally introduced in a 2014 CTI study as a new aerodynamic concept to reduce vortex formation and delay stall, the Tandem Blade has since evolved into a mature and widely adopted solution. The analysis focuses on how this aerodynamic design, intended to reduce turbulence generated by fan blades,

it is generally difficult to discern minor reductions in efficiency with conventional monitoring techniques

or condenser cell) or second stage flow (counter-flow

5 x 4 meters

Proper wiring methods for power and control wiring

Initial performance modeling predicts potential cold water temperatures well below ambient wet bulb

which means the inside of the condenser is being constantly exposed to aerated water for the majority of its operation time

projects were initiated to replace the asbestos cement fill of multiple large NDWCTs to improve their thermal performance

Control of water treatment chemistry utilizing instrument measurement of system water flow and cycles of concentration provides precise control of chemical additives

a process was patented (1) utilizing an anion exchange resin to selectively remove chromate ions from waste water

Several typical examples will be presented along with appropriate charts and graphs to clarify proper application

In America

The contaminants included a high temperature oil