Rolloe Bike’s Wheel That Filters Outdoor Air 

While ‘rolling’ through the streets of London, Design Innovation in Plastics (DIP) 2020 award winner Kristen Tapping came up with the idea for Rolloe, a bicycle wheel that filters outdoor air pollution.

With an understanding that the motion of bike wheels creates kinetic energy, Tapping, a third-year product design student from London South Bank University, began developing a prototype out of cardboard cutouts. Using smoke from incense and a basic fan, she sampled myriad variations.

Although the idea is scalable to a number of applications, Tapping started with bike wheels because they are similar to the existing technology in air filters. To avoid “recreating the wheel,” Tapping experimented with a variety of techniques to produce the vacuum and expulsion required to pull the dirty air into the device and release the filtered air out through the other side. The clean air stream is directed toward the rider’s face and surrounding area.

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