New Delhi: With masks, sanitizers, and social distancing becoming a part of our day to day life, the idea of traveling has also changed drastically in the Covid world. The Indian Railways has announced that the air-conditioned trains will now have operation theatre-like fresh air pumped into its coaches, replacing the circulated air which raises the chances of spread of infections.


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According to a report by PTI, the experiment started with 15 pairs of air-conditioned trains being run by the Railways on the Rajdhani routes since May 12, will be replicated in all AC trains as part of the national transporter's preparations for post-COVID operations.

"The Roof Mounted AC Package Unit (RMPU) system of Indian Railways AC coaches replaces air more than 16-18 times per hour just like in OTs," officials said.

Previously, these AC trains had air change six to eight times per hour and 80% of the air that was pushed into coaches was recirculated air, while 20% was fresh air.

However, with the increase in the number of air changes, there has been a 10 to 15% increase in energy consumption.

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"This is the price one has to pay for the safety of passengers. This is the new normal. The way an AC works is that it uses recirculated air so that it gets cooler faster. When we use fresh air it takes more time to cool, so there's additional energy consumption," an officer said.

The Railways have also increased the centralized AC's temperature from the usual 23 degrees to 25 degrees as passengers are no longer being provided linen.

Officials said that on the advice of the health experts, the Railways' has modified its non-AC coaches as isolation coaches for treating mild coronavirus cases and said that they have also applied health ministry guidelines to modify the ac units onboard the special Rajdhani trains to ensure that the disease does not spread.

As per the Ministry of Health guidelines, centralized AC is acceptable provided complete air change inside an AC coach takes place at least 12 times per hour, officials said.

Can air conditioning spread COVID-19?

Though it is not a proven fact, a study published in Emerging Infectious Diseases, found that nine people in Wuhan, China (the first epicenter of the new coronavirus outbreak) were infected with the virus simply by sitting near an air conditioning vent in a restaurant.

According to researchers, the virus was spread by one asymptomatic diner who sat at a table in front of the AC unit. Four people at the table later tested positive for COVID-19, as did five people at neighboring tables. No such case has been reported in India till date.

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