So why not disinfect the air in the Covid19 with non-filtering but thermal masks which will heat the air> 70 ° C rather than filter it !! ??
We can, of course, do both: filtration THEN heating! ?
It would suffice to thermally disinfect the air, let's say at 90-100 ° C for a few seconds? !
Addition: read this thesis Doctorate on viral inactivation by physical methods by Swan Firquet
(thanks Padawan: health-pollution-prevention / virus-covid19-the-mask-thermal-disinfectant-t16392-60.html # p389870)
This graph is shown on page 77:
It therefore takes just 1 second at 110 ° C to inhibit the H1N1 virus by a log factor of 4!
Edit 0: the calculations below allow to estimate log order reduction 7 to 90 ° C in just 1 second...
See: health-pollution-prevention / virus-covid19-the-thermal-disinfectant-mask-t16392-30.html
But putting a mini inter-cooler to lower the temperature is not a major technical problem ...
Thermal level: a gas camping gas cylinder would certainly suffice for more than a few hours of breathing, or much more !!
I'm going to do some table corner calculations.
Edit: they are done, see below, it takes less than 30W to heat the air of an adult at rest! So we can use a battery!
Basing yourself on a snorkeling mask is a possibility, it turns out that I have 1, I also have pipes, batteries and PC fans ... I just need to find the heating element and the regulation and I can make a prototype!
Edit2: as suggested here we can make a UV disinfection mask too! No doubt less energy-consuming, but disinfection does not prevent the other!
ps: this subject can precede a possible patent ... for those to whom it would cross the mind ...
Add: IMPORTANT the COVID19 thermal inhibition curves
Sources and methods below in this topic. They are based on the measurements from this study: https://www.medrxiv.org/content/10.1101 ... l.pdf+html ou download/file.php?id=13626 ou health-pollution-prevention / freeze-or-burn-the-covid-19-t16358-30.html # p388475