Although the COVID-19 epidemic has lasted for more than a year, it is still spreading in some parts of the world, and the number of infections remains high. This has given the new coronavirus more opportunities to mutate and be selected, and new mutant strains continue to appear. For example, the Alpha variant was found in the United Kingdom in September 2020, the Beta variant was found in South Africa in May 2020, the Gamma variant was found in Brazil in November 2020, and Delta was found in India in September 2020 ( Delta) variant, and the Lambda variant found in Peru in December 2020. It seems that the mutation of the new coronavirus has become the norm.
Due to the "double mutation" of the Delta mutant strain (carrying E484Q and L452R mutations), the Delta mutant strain has strong transmission, short incubation period, high viral load, rapid disease development, high proportion of severe illness, and possible immune escape. The Director-General of the World Health Organization (WHO) Tedros Adanom Gebrejesus said at a press conference on June 25 that the delta mutant virus is "the most spreadable variant found so far." The delta variant has become the driving force of the latest wave of COVID-19 in the world, and the number of confirmed cases of new coronary pneumonia in the world has exceeded the 200 million mark.
The design points of fresh air central air-conditioning:
As for the reasonable airflow distribution, the specific performance is high efficiency in removing pollutants (pathogenic bacteria):
①Suppress local sources of infection from spreading to the whole room;
② Settle the suspended bacteria on the spot as soon as possible;
③Do not let the settled bacteria float again and become suspended bacteria;
④Air supply enters the human respiratory area as soon as possible, and pathogenic bacteria are expelled as soon as possible.
The delta mutant strain has a high viral load, rapid replication in the body, high toxicity of human exhaled gas, significantly enhanced infectivity, faster transmission, and increased risk of airborne transmission. The way the virus spreads in the indoor air is elusive and unpredictable. Increasing the difficulty of epidemic prevention and control.
The virus needs to float in the air for a long time under certain conditions and gather the infectious dose. Personal protection is only a passive measure. Engineering measures, that is, compliant fresh air volume, appropriate return air filter and reasonable airflow distribution, actively destroy the conditions of virus generation and air transmission, which can effectively avoid the generation of virus air transmission. In the event of an infected person in the room, once the virus is exhaled, the upper and lower return airflow will allow it to settle as soon as possible, blocking the spread, and effectively remove the virus through the return air filter before entering the air conditioner. In this way, the virus cannot accumulate, nor can it float in the air. In addition, a steady stream of compliant fresh air is introduced to dilute the indoor air.
For more information , please contact with HEAD-POWER air conditioning .
Company :Guangdong Head-Power Air Conditioning Co.,Ltd
Contact person :Cindy