Re:DIY Positive Pressure Suit
by angry_octet on Friday March 27, 2020 @03:13PM
(#22705872)
Sorry this is completely wrong. If you get enough airflow to breath you're getting enough virus to get sick.
Re:DIY Positive Pressure Suit
by Engineering-MD on Monday March 23, 2020 @12:44AM
(#22661333)
Do you have a source for this?
Re:DIY Positive Pressure Suit
by coderintherye on Monday March 23, 2020 @12:57AM
(#22661377)
I think that study is testing the opposite what what this suit provides -- it's not testing protection of the wearer, but testing whether or not the mask protects others:
The median-fit factor of the homemade masks was one-half that of the surgical masks. Both masks significantly reduced the number of microorganisms expelled by volunteers, although the surgical mask was 3 times more effective in blocking transmission than the homemade mask.
A few layers of cotton is usually enough to filter 95%> of all 0.3 micron particles this is because the filtration is based on the fact that the thickness of the filter is orders of magnitude larger than the size of the particles so the size individual holes at any given layer don’t matter that much.
That said the majority of the benefit from this suit wouldn’t come from air filtering but from the fact that you won’t get contaminated droplets on your face and you won’t be able to touch your face with your hands after touching contaminated surfaces.