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
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Samsung's Galaxy line of smartphones used to fare quite well in the repairability department, but last year's flagship S5 model took a tumble, scoring a meh-inducing 5/10. Will the newly redesigned S6 lead us back into star-studded territory, or will we sink further into the depths of a repairability black hole?
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NASA engineer Brian Trease studied abroad in Japan as a high school student and used to fold fast-food wrappers into cranes using origami techniques he learned in library books. Inspired by this, he began to imagine that origami could be applied to building spacecraft components, particularly solar panels that could one day send solar power from space to be used on earth.
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