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When it comes
to keeping our surroundings clean, we all are very cautious about the surfaces,
however, air disinfection is generally overlooked. With offices, schools,
restaurants and commercial activities gradually opening up, there’s a higher
possibility of disease-causing pathogens getting transmitted from the air in
such closed environments.
It is here
that Upper-room Ultraviolet Germicidal Irradiation comes into picture, which is
believed to destroy the bacteria and viruses floating in the air. “We have
struggled in the past to see this highly effective, very safe technology fully
implemented for airborne infections,” asserted Dr. Edward A. Nardell, a
professor of global health and social medicine at Harvard Medical School while
speaking to The New York Times a couple of months ago. “We’ve done the studies.
We know it works.”
That Sunlight disinfects is a
universal fact and this technology would mean bringing the same, indoors.
Putting the debate of harmful effects of UVA and UVB rays to rest, this
upper-room UV technology makes use of UVC light, which is considered safe for
humans. Though it can cause irritation on the skin and in the eyes, it is said
to clear up in a couple of days. To be more prudent, the light is usually placed at a height way above people’s head or is
generally put to use when the space is unoccupied. According to Dr.
Nardell, the safety of UVC light is really long established.
Since these upper-air
UV fixtures are either mounted on walls or ceilings they are immobile, which
puts their efficiency for bigger spaces under the scanner. As Jelena Srebric, a
professor of Mechanical Engineering at the University of Maryland specifies,
“The mall owners are calling with the exact same question.” Consequently, ceiling
fans are being used to circulate the air and push it upward so that floating
bacteria and viruses are annihilated faster. It is reported that ceiling fans
improved the efficiency by about a third.
Dr. Srebric and Dr. Nardell are now applying the models to bigger spaces like airports and retail stores and are sure that it will definitely improve the safety factor.
To read the source article please click on the link: https://www.nytimes.com/2020/05/07/science/ultraviolet-light-coronavirus.html