Fig 1.
General scheme of the methodology used in this study to evaluate the performance of the disinfection technology (chamber) in relation to the dispersion of the biocidal agent.
Fig 2.
Representation of the disinfection chamber developed for instant decontamination of surfaces using biocidal agents.
Fig 3.
Illustration of the regions where WSPs were applied.
(A) Experiment with the rods in the central area of the chamber; (B) experiment with the properly dressed individual in PPE.
Fig 4.
Computational domain illustration of the nebulizer nozzle.
Fig 5.
Computational mesh of the nebulizer nozzle.
Table 1.
Contour conditions of the disinfection chamber nebulizer nozzles.
Fig 6.
Computational domain of the disinfection chamber.
Table 2.
Flow rates of the nebulizer nozzles.
Fig 7.
Measurement of the angle formed by the spray generated in the nebulizer nozzles.
(A) Vertical position; (B) Horizontal position.
Fig 8.
Rosin–Rammler distribution function for the data collected from the WSPs.
Fig 9.
WSPs exposed to the biocidal agent for 10 s and their percentage wet area values.
(A) Sample 1; (B) Sample 2.
Fig 10.
WSPs applied to the body of an individual properly dressed in PPE and exposed to the biocidal agent in the disinfection chamber composed of six nozzles.
(A) Exposure for 10 s without turning in the central area of the chamber; (B) exposure for 10 s with 360° rotation in the central area of the chamber; (C) exposure for 30 s with 360° rotation in the central area of the chamber.
Fig 11.
Contours of the nebulizer nozzle.
(A) Yplus; (B) Streamline.
Table 3.
Flow rates and velocities of the fluid at the exit of the disinfection chamber nebulizer nozzles.
Fig 12.
Mesh convergence study.
Fig 13.
Dispersion of the droplets generated by the six nebulizer nozzles in the disinfection chamber during the exposure time of 10 s.
Fig 14.
Angle formed by the spray on the nebulizer nozzles in the vertical and horizontal positions.
(A) Thermal image; (B) CFD simulation.
Fig 15.
Percentage of wet area in the ranges analyzed inside the disinfection chamber with six nebulizer nozzles (experimental and simulation results).
Fig 16.
Contours of the nozzles N1 and N2.
(A) Front view and (B) Side view of the horizontal nozzle (N1); (C) Front view and (D) Side view of the vertical nozzle (N2).
Fig 17.
Newly proposed passage procedure for using the disinfection chamber.
Fig 18.
WSPs applied to different regions of the body of an individual properly dressed with PPE and exposed to the biocidal agent during passage through the disinfection chamber with six nozzles in 30 s.
(A) Sample 1; (B) Sample 2.
Fig 19.
New proposed configuration for the disinfection chamber designed with 12 nebulizer nozzles.
Fig 20.
Dispersion of the droplets generated by the 12 nebulizer nozzles according to the new configuration of the disinfection chamber.
Fig 21.
Percentage of wet area in the configurations analyzed for the disinfection chamber with 6 and 12 nebulizer nozzles.
Fig 22.
WSPs applied to the body and exposed to the biocidal agent (12 nozzles).
(A) Exposed for 10 s without turning; (B) Exposed for 10s with turning in the center; (C) Exposed for 30 s with turning in the center.