Delhi’s New Smoke Tower – Technology, Impact, Evidence

Ahead of the famous smoke extraction season, Delhi on Monday He got a ‘smoke tower’, Technology support to combat air pollution. How does the ‘Smoke Tower’, as inaugurated by Prime Minister Arvind Kjerial, behind the Shivaji Stadium metro station?

Smoke tower components

The structure is 24 meters high, about 18 meters high building – 18 meters concrete tower, covered with a 6 meter high roof. According to him, there are 40 supporters, 10 on each side.

Each fan can pour 25 cubic meters of air per second, generally up to 1,000 cubic meters per second. There are 5,000 filters in the wall in two layers. The filters and fans were imported from the United States.

Image – Tata projects

Smoke Tower: How it works

The tower will be used by the University of Minnesota’s downdraft air cleaner system, said Anwar Ali Khan, senior environmental engineer at the Delhi Pollution Control Committee, who is in charge of the project.

IIT-Bombay has partnered with the University of the United States to duplicate the technology used by Tata Projects Limited.

Contaminated air is sucked in at a height of 24 meters, and filtered air is released at the bottom of the tower, about 10 meters above the ground. The negative pressure created by the fans at the bottom of the tower is absorbed into the air above. The “macro” layer in the filter contains particles of 10 microns and above, and the “micro” layer filters small particles around 0.3 microns.

The descent system differs from the Chinese system in that it uses a 60-meter chimney “update” system in the Chinese city: air is sucked in from near the ground, and is heated and moved upwards. Fresh air is released from the top of the tower.

It could be an impact

The IIT-Bombay computer fluid variability model suggests that the tower can affect air quality up to 1 km. The actual impact will be assessed in a two-year pilot study at IIT-Bombay and IIT-Delhi and will determine how the tower operates in different climatic conditions and how the PM2.5 standards differ from airflow.

The tower’s automatic control and information (SCADA) system monitors air quality. The PM2.5 and PM10 levers, in addition to temperature and humidity, are continuously measured and displayed on a tower.

In order to determine the effect on these distances, monitors of different distances will soon be installed on the tower. Officials say the project aims to provide fresh air in the “surrounding” area.

Smoke Tower, Delhi Fog Tower, Smoke Tower, kejriwal smog tower, Delhi News ‘Smoke Tower’ was inaugurated by Delhi Prime Minister Arvind Kjerial on Monday.

Supreme Court Order

A.D. In 2019, the Supreme Court ordered the Central Pollution Control Board (CCBC) and the Delhi government to install smoke towers to combat air pollution. The court heard allegations of air pollution in the national capital following the burning of straw in Punjab, Haryana and Uttar Pradesh. Then IIT-Bombay proposed to the CCB for the towers. In January 2020, the Supreme Court ordered the construction of two towers as part of a pilot project.

The chimney at Connett is the first of these towers. The second tower in East Delhi, under the auspices of the Anne Vihar CPCB, is nearing completion.

A.D. There has been a 258% increase to 335% in PM10 stocks in Delhi since 2009. In 2016, the CCCB. But the most common pollution in Delhi and neighboring areas is PM2.5, the report said.

There is no evidence yet

This is the first major air purification system in India. Small smoke towers have been built in the Netherlands and South Korea; The big ones are set up in China.

Experts say there is not enough evidence to build smoke towers.

“We have no clear evidence that smoke towers in India and other parts of the world have helped improve the city’s climate. How do you filter air in a dynamic environment when there is no space? Anumita Roichouduri, executive director of research and advocacy at the Center for Science and the Environment, said.

Dilpank Saha, former additional director, CCB. And the former head of the Air Quality Control Unit in Delhi also said there was no proven qualification for such loads. “We have to control emissions at the ground level, they did not create emissions and then we try to clean it up,” he said.

Delhi has three small air purifiers (12 feet high) installed in Krishna Nagar, Gandhi Nagar and Lajpat Nagar by the Gautham Gambir Foundation – mainly versions of indoor air purifiers.

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