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New device could help us all breathe easier

Dec 13. 2019
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By The Nation

A researcher at Suranaree University of Technology (SUT) this week successfully demonstrated the prototype of a pm2.5 dust eliminator using ions and a negative electric change, which could soon be installed in communities.

Assoc Prof Anan Thongraya, vice-chairman of the university’s technology research and development department, said that the prototype works like the closed-area air purifier but has been redesigned for use in the open air with reduced power consumption,

Chief of the research centre, Prof Dr Chanchai Thongsopa, revealed that this PM 2.5 dust eliminator uses the principle of releasing negative charges generated from tens of thousands of volts in a 220-voltage circuit with direct current voltage of approximately 35,000 volts, 18 mA high voltage, low current, and a high voltage of 35,000 volts to send electric ions into the air through the pointed end of the copper plate to capture PM2.5 dust particles. This will neutralise dust particles leaving only clean air without dust and smoke behind. 

The prototype measures 120 cm x120 cm x120 cm and costs Bt200,000 per device. It can eliminate dust up to 100,000 micrograms an hour equal to the efficiency of a medium-sized tree in a total area of about 9 square metres with an average electricity cost of Bt1.50 per hour.

The innovation will help prevent dust and reduce the risk of respiratory failure and allergies, saving health costs. The team is hoping to install the device in urban communities and is now discussing possible locations with the relevant authorities.

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