Nanofiber technology filter is highly-efficient (up to 95%) on sub-micron particles, including bacteria and viruses. Researchers say filtered air can prevent aerosol transmission of the Coronavirus! Aerosols don't fall to the ground, but rather disperse throughout the air, getting diluted by air currents. The FFE System invention created a product that filters air currents resulting in diluting virus airborne transmissions to humans!
EXPOSURE TO OTHERS
Small gaps between the surgical or N95 facemask material and skin will lead to substantial decreases in the overall filtration efficiency.
For aerosols filtration efficiency decreases by 50% for a relative leak area of only 1%.
Direct exposure to others would be 50%.
The FFE System exposure to others would be 1.9% or less.
"Strategy for optimizing the supply of N95 respirators"
Using The FFE System --- Helping Dilute Airborne Virus Transmission
Your entire face is vented with filtered air. You have no choice but to breathe-in clean filtered air. Any floating aerosol clouds will be immediately pushed away from your face at a high airflow rate resulting in diluting the virus. Increasing ventilation rate is believed to reduce the cross infection of airborne transmitted diseases by removing or diluting pathogen-laden airborne droplet nuclei. A higher ventilation rate can dilute the contaminated air inside the space more rapidly and decrease the risk of cross infection. When wearing a surgical mask, aerosols can enter through the gaps. The filtered airflow will not allow virus aerosols to enter, pushing them away causing the virus to dilute. The same will occur if you wore a face shield with or without wearing a surgical mask. The FFE System airflow rate is 4 to 5 mph. As personal ventilation is a relatively new concept in hospitals, there are only a few studies known by the author
of this article, testing the performance of these systems. In office situations personal ventilation is already
generally used and several studies (Cermak et al., 2006; Pantelic et al., 2009; Melikov, 2004) show that personal
ventilation will always be able to improve the inhaled air quality in rooms with mixing ventilation and indoor air
quality in rooms with displacement ventilation with regard to pollution emitted from the floor and from humanproduced contaminants. PV systems which supply clean air are able to decrease the inhaled pollutant
concentration by factors between 2 and 50 times compared with total-volume ventilation alone. Pantelic
concluded that PV is able to reduce the concentration of contaminated droplets in the inhalation zone and at a
distance wide enough from the index patient, the momentum of cough jets could be bend away. MERV 16 RATING is considered hospital level air quality.
Improved PV designs for disease control (FFE System)
Airborne transmission between two occupants using the FFE System will result in approximately less than 1% of direct exposure. In the context of COVID-19, new requirements are occurring in ventilation systems to mitigate airborne transmission risk in indoor environment. Personalized ventilation (PV) which directly delivers clean air to the occupant's breathing zone is considered as a promising solution. To explore the potentials of PV in preventing the spread of infectious aerosols between closely ranged occupants, experiments were conducted with two breathing thermal manikins with three different relative orientations. Nebulized aerosols were used to mimic exhaled droplets transmitted between the occupants. Four risk assessment models were applied to evaluate the exposure or infection risk affected by PV with different operation modes. Results show that PV was effective in reducing the user's infection risk compared with mixing ventilation alone.
As both the exhaled flow and the PVb air developed an upward direction as shown inFig. 13(b), the collision between the PV jet and the end part of the exhaled flow or the remaining suspended cloud of particles after exhalation was not as marked as that which occurred in scenario 1. A smaller proportion of exposed droplet nuclei was derived from direct exposure (56.7–72.7%).
As PV is a ventilation mode that directly interferes with a human microenvironment, the flow interactions within this microenvironment should be carefully considered to identify the best design for optimal infection control. Advanced PV designs should be developed to satisfy requirements for effective interventions in airborne transmission pathways at any point within the microenvironment, from where particles leave the infectious source to where these enter the breathing zone of another.
In this study it was found that the effectiveness of PV in protecting against infectious particle transmission largely depends on the extent to which PV entrains ambient infectious particles. If low entrainment of ambient air by PV can be realized, PV can deliver clean air with high efficiency directly to the breathing zone of the exposed occupant. PV ATDs with wider diameter that can achieve a longer clean air core are recommended for this purpose. When the jet's clean-air core is long enough to reach the occupant's breathing zone (BZ), the occupant can be effectively protected.