Cool fan: A new energy-saving bladeless ceiling #fan developed by an #NTUsg start-up can cool down a room twice as fast using only half the energy that a conventional fan would. Shaped like a UFO, the fan draws the air from below up through a #vortex before being dispersed outwards around the rims in a 360 degree arc. It also comes with a LED lamp and a UV disinfecting feature that can kill bacteria in the air and reduce the spread of airborne diseases in confined spaces. Designed by Energy Rese