DESIGN AND MODELLING OF AN AUTOMATIC WALK-THROUGH DISINFECTANT TUNNEL USING WATER MIST- SYSTEM
Abstract
A proposed walk through disinfectant tunnel is presented as part of local effort at
mitigating the rapid spread of the COVID-19 and to enhance the safe utilization of public
facilities. The system design was conceived due to the need to reduce the harmful airborne
virus that characterizes public buildings. The system is designed according to the NFPA
750 fire fighting mist systems which are currently in use in fire fighting. Components of
the designed system include a Pir motion detector, reservoir, water pump, directional
valves, distribution blocks, and mist ejection nozzles respectively. It is expected that at
ahead of 3.5 m and a flow rate of 2 x 10-5 m3s-1, a pump of capacity 0.871 Watts will be
needed for a public building with 1000 daily users at peak periods of 9 am and 4 pm
respectively. Furthermore, a computational flow modelling of the system was carried out
using ANSYS Fluent which provided satisfactory performance of the design parameters. It
is expected that this study will significantly contribute to the elimination of the active
particulate matter that contributes to the spread of the viral infection of COVID 19.