iit-madras develops low-cost air purifier | chennai news - times of india - commercial air purifier

Chennai: With the increase in pollution, the time for air purifiers to become essential household appliances is not far away.
A research group at IIT
Madras is ready for an affordable one.
The team developed a sensor.
This indoor air purifier is expected to reduce the load of pollutants, including microorganisms in the air.
Some companies have been selling air purifiers that cost more than 15 rupees for a small room.
Low by commonly used
Cost materials such as activated carbon and super
Violet light, a product from IIT stable, promises an affordable alternative.
Chennai's air quality index is about 55, and is one of the "good" cities in terms of pollution;
The Delhi index is 313, which is in the category of "very poor.
Air OK Technologies is a faculty start-up company launched under IITM incubation cells that will soon commercialize the device.
The first batch of domestic buyers may be people with respiratory diseases such as asthma.
It has also been designed to fit in any place where a disinfection environment is required, such as a hospital or a highly contaminated place, such as a basement parking lot, a building facing the road, and a dusty place.
Purifier in a simple three
Similar to the layered technology of water purifier.
The fan mounted at the bottom of the stainless steel cylindrical fuselage sucks in the air after the sensor detects contaminants in the air.
The air is transferred to a bag made of muslin fabric that acts as a pre-
Filter and remove large particles such as dust.
The second layer of filtration is the activated carbon produced by burning wood.
Bags filled with a thick layer of charcoal on the bottom and sides absorb contaminants including chemicals and other microscopic particles.
The researchers said the substances in the air would stick to the pores of charcoal.
The high surface area of the charcoal gives it a lot of bonding.
Therefore, the study team members said that the better the pores, the better the adsorption capacity.
As the level of contaminants decreases, the air passes through the third filter.
The filter has UV rays fixed above the activated carbon layer that handles bacteria and viruses.
Then release the treated air.
The system consumes 50 watts.
S. M. Shiva Nagendra, associate professor of environmental and water resources engineering, said that the air quality of the room needs attention as much as the outdoor environment.
We stayed indoors for a long time.
He said that when the pollutants outside move around, they accumulate and keep circulation in the room.
Several studies have suggested that motor vehicle emissions account for 45% of urban air pollution.
They are also major contributors to indoor air pollutants including toxic compounds such as smoke, dust, aerosol and carbon monoxide.
The pollution of vehicles plus the discharge of products such as paint, burning fuel, building rubble and allergens such as pollen, mold and dandruff will affect the indoor air quality.
The purifier carried out the first round of experiments in a controlled environment, showing a significant reduction in contaminants in the air.
Burning kerosene in a room measuring up to 300 micrograms per meter cube for less than 10 minutes and other molecules in the air (0.
001 mg per cubic meter).
The use of a purifier in the same environment shows that each public square particle in the filtered air is less than 20 to 30 micrograms.
Several such experiments are being carried out to verify the device.
Existing purifiers work on different mechanisms, such as filter cartridges made of fiberglass, foam, and cotton, fixed to a heating or cooling system, separate use of activated carbon and UV radiation or equipment using particles in high pressure ionising air.
The team is working to include additional features for devices that can allocate treated air within 360 degrees, sensors that can automate the entire purification process, and thus can save energy.
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