Numerical Analysis of Airborne Infection Control Performance of Germicidal Systems in a Temporary Shelter

수치해석을 이용한 임시대피소 내 공기감염확산 저감장치의 성능 분석

  • Received : 2014.12.31
  • Accepted : 2015.01.27
  • Published : 2015.02.28


Purpose : When natural disaster occurs, the victims are evacuated to temporary shelters such as indoor gymnasiums or large space buildings until their homes are recovered. If someone in this temporary shelter is infected with an airborne infectious disease, it becomes easier for the disease to spread to the other people in the shelter than it would be under normal conditions. Therefore, temporary shelters need to provide not only water and food but also hygienic indoor conditions. Methods : In this study, the use of mechanical systems such as ultraviolet germicidal irradiation (UVGI) systems and air cleaners were simulated using numerical analysis to find out how these systems can control airborne infection in temporary shelters. An indoor gymnasium was selected as a temporary shelter for the numerical simulation model considering Korea's post-disaster response system. Influenza A virus was assumed as an airborne infectious disease and the diffusion of the virus was made by one person in the shelter. Results : The result of this study showed that the UVGI systems disinfected the virus more effectively than the air cleaners by creating a more stable airflow after the disinfection process. The air cleaners could remove the virus but since it created an unstable airflow in the temporary shelter, the virus was condensed to a certain area to show a higher virus concentration level than the source location. Implications : In the temporary shelter, it is necessary to use UVGI systems or air cleaners for hygienic indoor conditions.


Temporary shelter;Numerical analysis;Airborne infection;UVGI system;Air cleaner


  1. APIC, 2008b, Infection prevention and control for shelters during disasters, 2007/2008 APIC Emergency Preparedness Committee
  2. CITC, 2013, "Shelters and TB: What Staff Need to Know, 2nd edition", Curry International Tuberculosis Center
  3. Coker, I.; et al., 2001, Guidelines for the utilization of Ultraviolet germicidal irradiation (UVGI) technology in controlling transmission of tuberculosis in health care facilities in South Africa, Medical Research Council, Pretoria, pp.1-40
  4. Huang, Jeng-Ming, et al., 2011c, The Effect of Ventilation Types on Pollutant Removal in a Large space plant with multiple pollutant source, Indoor and Built Environment, 20, pp.488-500
  5. Kanamori, Hajime; et al., 2013a, Tuberculosis exposure among evacuees at a shelter after earthquake Japan 2011, Emerging Infection Diseases 19, pp.799-801
  6. Nardell, Edward; et al., 2013, Upper-Room Ultraviolet Germicidal Irradiation (UVGI) for Air Disinfection: A Symposium in Print, Photochemistry and photobiology, 89, pp.764-769
  7. Nardell, Edward; et al., 2008, Safety of Upper-Room Ultraviolet Germicidal Air Disinfection for Room Occupants: Results from the Tuberculosis Ultraviolet Shelter Study, Public health reports 123, pp.52-60
  8. Noakes, C.J.; et al., 2006, Use of CFD modelling to optimize the design of Upper-room UVGI disinfection systems for ventilated Rooms, Indoor and Built Environment, 15, pp.347-356
  9. OSHA, 2009, Pandemic Influenza Preparedness and Response Guidance for Healthcare Workers and Healthcare Employers, Occupational Safety and Health Administration U.S. Department of Labor, 3328, pp.3-95
  10. Public Health Seattle & King County, 2010, "Tuberculosis Prevention and Control Guidelines For Homeless Service Agencies in Seattle-King Country, Washington, 4th edition", Public Health Seattle & King County, Prevention Division-Tuberculosis Control Program
  11. Sung, Minki; Kato, Shinsuke, 2011a, Estimating the germicidal effect of upper-room UVGI system on exhaled air of patients based on ventilation efficiency, Building and Environment, 46, pp.2326-2332
  12. Sung, Minki; et al., 2011b, Disinfection performance of ultraviolet germicidal irradiation systems for the microbial contamination on an evaporative humidifier, HVAC&R Research, 17, pp.22-30
  13. USA-Centers for Disease Control and Prevention, 2008a, Environmental Health Shelter Assessment form Instruction sheet, CDC shelter assessment tool
  14. Wrezel, Olga, 2009, Respiratory infections in the homeless, UWO Medical Journal, 78, pp.62-65
  15. 박정연; 성민기, 2014, 임시대피소를 대상으로 한 공기청정기와 자외선 살균장치의 공기감염 제어성능 수치해석, 건축학회추계학술발표대회 논문집, 34, pp.271-272
  16. 정선영, 2011d, 격리방법 길라잡이, Hanyang Medical Reviews, 31, pp.190-199


Supported by : Sejong University