USING AIR CONDITIONERS DURING CORONAVIRUS OUTBREAK
April 28, 2020
Amid the Covid-19 pandemic, the Central Public Works Department (CPWD) issued the advisory to its officials to address concerns associated with the spread of the disease via air conditioners and ventilation systems.
About:
The guidelines state “Set air conditioners room temperature between 24 degrees Celsius and 30 degrees Celsius and maintain relative humidity between 40 per cent and 70 per cent.
The guidelines were formulated by the Indian Society of Heating Refrigerating and Air Conditioner Engineers (ISHRAE) .
It quotes a study that found the transmission of Covid-19 in 100 cities in China lower in high temperature and high humidity. It also quotes a study which has shown that the SARS-CoV-2 can live for 14 days on a surface at 4 degrees Celsius, one day at 37 degrees Celsius and will die in 30 minutes at 56 degrees Celsius.
Humidity can affect the infectivity — the ease with which infections can take place — of the virus through respiration. In a dry environment, or when there is low humidity, it is easier for foreign particles to invade the body.
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