Rethinking Use of Individual Room Air-conditioners in View of COVID 19
As the World Health Organization is examining the airborne nature of COVID 19, there is past research on other airborne infections which set all encompassing guidelines. Even as more data begins to be available regarding COVID, there is proven spread of airborne disease like tuberculosis being transmitted by this route. As the summer months approach, there is an increased use of Air Conditioners in the tropical regions of the world. India, too being in this part of the world sees an active rise in the indoors which are being air conditioned to meet the thermal comfort requirements of the rising urban population which is spending a large chunk of time indoors. This is coupled with the enforced lockdown which encourages people to stay indoors to prevent the spread of infection. In such situations the use of Room air conditioner requires rethinking as they re-circulate the indoor air without any Fresh air supply into the room. To reduce heat gain and save the electric load of the room AC, people tend to seal the windows further. This paper looks at many possible ways of finding out infection spread in spaces and one of them is used to find out the probability of airborne infection spread in a typical public space. An experiment to validate the same has been conducted in a classroom setup with results analysed. Increased ventilation has been demonstrated to show a lesser probability of infection spread.
Bureau of Indian Standards (2016). SP(7) National Building Code. New Delhi : Bureau of Indian Standard. (Bureau of Indian Standards, 2016).
Central Public Works Department, Government of India (2017). General Specifications for Heating, Ventilation & Air-Conditioning (HVAC) Works. New Delhi: Central Public Works Department, Government of India.
Doremalen, N.V., et al. (2020). Aerosol and Surface Stability of SARS-CoV-2 as Compared with SARSCoV-1. The New England Journal of Medicine, 382(16), 1564-1567. https://doi.org/10.1056/NEJMc2004973. DOI: https://doi.org/10.1056/NEJMc2004973
Issarow, C.M., Mulder, N., & Wood, R. (2015). Modelling the risk of airborne infectious disease using exhaled air. Journal of Theoretical Biology, 372, 100–106. https://doi.org/10.1016/j.jtbi.2015.02.010 DOI: https://doi.org/10.1016/j.jtbi.2015.02.010
Kembel, S.W., et al. (2012). Architectural design influences the diversity and structure of the built environment microbiome. The ISME Journal, 6, 1469–1479. https://doi.org/10.1038/ismej.2011.211 DOI: https://doi.org/10.1038/ismej.2011.211
Ministry of Health and Family Welfare, Goverment of India (2012). Indian Public Health Standard. New Delhi: Ministry of Health and Family Welfare, Goverment of India.
Richardson, E.T., Morrow, C.D., Kalil, D.B., Bekker, L.G., & Wood, R. (2014). Shared Air: A Renewed Focus on Ventilation for the Prevention of Tuberculosis Transmission. PLOS ONE 9(5): e96334. https://doi.org/10.1371/journal.pone.0096334 DOI: https://doi.org/10.1371/journal.pone.0096334
World Health Organization (2019). WHO guidelines on tuberculosis infection prevention and control, 2019 update. Geneva : WHO.
World Health Oraganisation (2020). Severe Acute Respiratory Infection (SARI) Treatment Facility Design. World Health Oraganisation.
Copyright (c) 2020 Raja Singh, Anil Dewan
This work is licensed under a Creative Commons Attribution 4.0 International License.
Articles in the Journal of Creative Space (Creat. Sp.) by Chitkara University Publications are Open Access articles that are published with licensed under a Creative Commons Attribution- CC-BY 4.0 International License. Based on a work at https://cs.chitkara.edu.in. This license permits one to use, remix, tweak and reproduction in any medium, even commercially provided one give credit for the original creation.
View Legal Code of the above-mentioned license, https://creativecommons.org/licenses/by/4.0/legalcode
View Licence Deed here https://creativecommons.org/licenses/by/4.0/
|Journal of Creative Space by Chitkara University Publications is licensed under a Creative Commons Attribution 4.0 International License. Based on a work at https://cs.chitkara.edu.in/|