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- W4230447756 abstract "Abstract It is important to know whether SARS-CoV-2 is spread through the air-conditioning systems. Taking the central air-conditioning system as an example, we analyze the mechanism and potential health risk of respiratory virus transmission in air-conditioned rooms, and propose a method to study the risk of virus transmission in central air-conditioning systems by investigating the data from medical experiments. The virus carrying capacity and the decay characteristics of indoor pathogen droplets are studied in this research. Additionally, the effects of air temperature and relative humidity on the virus survival in the air or on surfaces are investigated. The removal efficiency of infectious droplet nuclei by air-conditioning filter was then determined. Thus, the transmission risk during the operation of centralized air-conditioning system is evaluated. The results show that the indoor temperature and humidity are controlled in the range of 20-25℃ and 40%-70% by central air-conditioning during the epidemic period, which not only benefits the health and comfort of residents, but also weakens the vitality of the virus. The larger the droplet size, the longer the viruses survive. Since the filter efficiency of air-conditioning filter increases with the increase of particle size, increasing the number of air changes of the circulating air volume can accelerate the removal of potential pathogen particles. Therefore, scientific operation of centralized air conditioning systems during the epidemic period has more advantages than disadvantages." @default.
- W4230447756 created "2022-05-11" @default.
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- W4230447756 date "2021-02-15" @default.
- W4230447756 modified "2023-09-25" @default.
- W4230447756 title "Analysis on The Risk of Respiratory Virus Transmission By Air Conditioning System Operation-Based on Experimental Evidence" @default.
- W4230447756 doi "https://doi.org/10.21203/rs.3.rs-192895/v1" @default.
- W4230447756 hasPublicationYear "2021" @default.
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