Bladeless Vortec ceiling fan quickens cooling whereas saving power

Researchers at Singapore’s Nanyang Technological University (NTU Singapore) developed the UFO-shaped ceiling fan, which uses half the energy of a conventional fan to cool a small room twice as fast. The fan is brought to market by Vortec, the spin-off from NTU Singapour.

The fan, named Vortec, draws in the cooler air from under the fan and draws heat and moisture away from the people sitting underneath so that they feel cool. Then the fan throws the air out from the top of the spinning vortex to create a curtain of air that falls down and cools people on the periphery with its circular airflow. Since there are no exposed fan blades, the fan can be safely touched even at high speeds. This means that it can also be installed deeper on the ceiling than conventional fans.

Traditional multi-bladed fans just blow air down, and those on the edge of the range don’t feel as cool as people below. In addition, a typical ceiling fan uses around 75 watts compared to the 42 watts of the Vortec ceiling fan, which, due to its double air flow, generates twice as much air movement at around 100 cubic meters per minute.

The new ceiling fan is equipped with an LED lamp in the middle, which provides light at different white temperatures, and a UV light source. It helps kill microorganisms such as bacteria and viruses that can contaminate the fan and reduce the spread of diseases in the air in a confined space.

During the laboratory test, the UV LED lamps manufactured by Seoul Viosys – a global inventor of UV LED products and technologies that are widely used for sterilization and disinfection purposes – achieved 99.9% sterilization of the coronavirus (COVID- 19).

In conjunction with the building’s passive displacement ventilation system, the Connect71 Co-Op Café in the NTU Innovation Center, which is the size of a four-room apartment (90 m²), was able to reduce operating costs by an estimated 50%. The efficient circulation and the wind volume of the Vortec ceiling fan had cooled down their customers without disturbing the café ambience due to its low-noise operation at an optimal 23 degrees Celsius.

“The fans fit seamlessly into the background of the café, are visually aesthetic and add added value to the interior design we want. They also help the cafe keep up with the technologically advanced ambience of the innovation center we are in, ”NTU student Crystal Mak, who works as a manager at Connect71 Cafe, told the new fans after a month long been installed.

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