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By John Lewis, Regional Editor
7/22/2002 Post a comment

NO RATINGS

TwinBlade reduces operating and maintenance costs because wear from abrasive dust loads doesn't increase energy consumption over time.

Blade erosion in flue gas axial fans increases operating costs due to reduced fan efficiency. Positioning two non-profiled blades on one common blade base, says Håkan Bard, head of development at ABB Ventilation Products, results in substantially less wear than the corresponding airfoil blade. Even with some wear developing at the leading edge, fan peak efficiency is unaffected. In addition to fewer components, the "PF TwinBlade" promises no increase in power consumption due to wear, low impeller inertia, and less blade bearing/linkage maintenance.

James Schick, Flakt Fangroup Inc., 1110 Main Place Tower, Buffalo, NY 14202-0420; Tel: (716) 845-0200; E-Mail: james.h.schick.us.abb.com. For a TwinBlade animation, visit www.abb.com/fangroup; For more information, circle 510

Submit your ideas and rough drawings for this section to John Lewis, Designer's Corner, Design News, 275 Washington St., Newton, MA 02458

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