Sign In
Learn bits
Ecology & Environment
Pradeep Kumar

24/08/21 13:05 PM IST

Delhi’s new smog tower

In news

Delhi got a ‘smog tower’, a technological aid to help combat air pollution

Details of tower
  • The structure is 24 m high, about as much as an 8-storey building — an 18-metre concrete tower, topped by a 6-metre-high canopy. At its base are 40 fans, 10 on each side.
  • Each fan can discharge 25 cubic metres per second of air, adding up to 1,000 cubic metres per second for the tower as a whole.
  • Inside the tower in two layers are 5,000 filters.
  • The filters and fans have been imported from the United States.
How it works ?
  • The tower uses a ‘downdraft air cleaning system’ developed by the University of Minnesota.
  • IIT-Bombay has collaborated with the American university to replicate the technology, which has been implemented by the commercial arm of Tata Projects Limited.
  • Polluted air is sucked in at a height of 24 m, and filtered air is released at the bottom of the tower, at a height of about 10 m from the ground.
  • When the fans at the bottom of the tower operate, the negative pressure created sucks in air from the top.
  • The ‘macro’ layer in the filter traps particles of 10 microns and larger, while the ‘micro’ layer filters smaller particles of around 0.3 microns.
Source: Indian Express

More Related Current Affairs View All

13 Aug

Working of satellite internet

'Satellite internet is revolutionizing how we connect, extending high-speed access to virtually every corner of the globe, regardless of location.' Imagine getting online from t

Read More

13 Aug

CBSE’s plan for open-book exams

'The Central Board of Secondary Education (CBSE) has officially approved the introduction of Open-Book Assessments (OBAs) for Class 9 students starting from the 2026-27 academic se

Read More

12 Aug

Stray dog problem

'The Supreme Court  directed the Delhi government, civic bodies, and authorities of Noida, Gurgaon, and Ghaziabad to round up and move stray dogs to shelters, underlining the

Read More

India’s First Ai-Driven Magazine Generator

Generate Your Custom Current Affairs Magazine using our AI in just 3 steps