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Date [ 2015-10-15, 05:54 ]

An engineering team from University Malaya has found a smart way to light up.


(Kuala Lumpur=Koreanpress) Nancy Joseph =  Dr.Chong Wen Tong, Associate Professor, Department of Mechanical Engineering, Faculty of Engineering, University of Malaya has found a new method of lighting as well as keeping pesky mosquitoes away.

The smart outdoor lighting system is an innovative idea of combining hybrid wind-solar energy generation, LED lighting and mosquito trap into one compact design. The off-grid features of the system offers great advantage where it can be placed anywhere, including in remote or highly populated urban areas.

The hybrid renewable energy sources consist of a solar photovoltaic (PV) panel and a vertical axis wind turbine (VAWT). The PV panel located at the top of the system is to reduce the shadow effects and maximize the energy harness of the sun; whereas, the VAWT is shrouded by the omni-direction-guide-vane (ODGV) which is a wind power augmentation system that creates venturi effects to increase the on-coming wind speed.

In wind tunnel testing, the power output for the ODGV integrated VAWT, increased by about 3.48 times compared to the bare VAWT. The rotating parts of the VAWT are enclosed within the ODGV and thus it is safer for the public.

These two renewable energy sources are useful to cover the load demand under varying weathers, hence improving the system’s reliability. The power generated by the green energy is used to power the lighting and the mosquito trap. The long life span LED lights that integrated with the guide vanes not only provide brightness during night, but also serve as a decorative purpose.

With the increasing dengue outbreak cases across Malaysia, there is an urgent need to seek a solution to control mosquito populations. Mosquitoes react sensitively to a certain wavelength of ultraviolet (UV) lights. The mosquito trap consists of an integrated weak UV (ultraviolet) light and a suction fan. Certain parts within the trap are coated with titanium dioxide (TiO2). When the UV wavelength comes in contact with the TiO2, a photocatalytic reaction takes place that produces carbon dioxide (CO2).

This is the same CO2 that humans exhale and is irresistible to mosquitoes. Once the mosquitoes have been attracted to the trap by the UV light and CO2, the fan draws the mosquitoes at the bottom and keeps them from escaping based on the vacuum action created by the continuous cycle of the fan. With these benefits, the innovation can be a cost-effective mosquito trap that forms part of tomorrow’s urban landscape.

abc@koreanpress.net
 

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