Howden Cooling Fans RETROFIT OF A LARGE COOLING TOWER IN COMBINATION WITH A SIGNIFICANT NOISE REDUCTION Case Study Cooling Tower at OMV, Vienna OMV has a large refinery outside the Austrian capital of Vienna. Typically large cooling towers are a key part of the instal- lations at such a plant. After 18 years of operation, cooling tower number 3 required replacement of the rotating equipment, i.e. the fans and drive trains. In addition, OMV has a

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