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TP25-17 Direct Drive CoolingThe promise of direct drive cooling tower fans with Permanent Magnet (PM) motors is not new, but so far this approach has not seen significant adoption. This paper reviews the advantages of direct drive and the requirements for successful direct drive implementation, including performance and economic gaps that have impeded adoption. Efficient torque at the low speeds required for direct drive has been a critical constraint. Crossing this gap can be

which also posses superior yellow metal corrosion inhibition performance

The heart of the device is a variable high frequency transformer that imparts electrical energy to the cooling tower water

heat has been dissipated primarily by once-through water from natural lakes and rivers

distance between tower rows

“Long Term” means data acquisition running from 3 to 9 months which implies specific attention during the whole period and increases the cost of the test

includes balancing the interactions among pH's

The speaker will present major points from his two (2) years of experience in the upgrading of Cooling Towers Maintenance Program to prevent Legionella transmission

In 1965 a form of "handwriting on the wall" was presented to the American

as attempts are made to determine responsibility and to seek compensation for these failures

State-of-the-art ACC’s feature single-row finned tubes installed in an A-frame steel structure

The "wet" Fin-Fan is similar to a standard Fin-Fan

Similar results were obtained for a counter-flow

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