Making a Corsi-Rosenthal box using computer fans (12-V 0.9A) that will serve as an economical air purifier that serves to reduce the risk of transmissions in classrooms. #COVIDisAirborne
@jcagar I still believe a network of such PC fan/filter fixtures within a space is compelling to explore (akin to lighting design). A factory roll of MERV-13 or MERV-14 can most economically/simply achieve a desired fan/filter surface area ratio through simple shapes and construction methods. Scale/array to achieve desired CADR. The question remains how performant such a design is compared an equivalent box filter. (I gave my supplies away in hopes of that answer.)
@jcagar Sorry, one last thing I'd point out. As many schools, etc. have upgraded lighting over the years to be more efficient, is there spare ampacity on these circuits that could be utilized for filter fixtures (lights => occupancy)?
@jcagar two last things, regarding arrays:
https://www.etsy.com/listing/1156864558/fan-joiner-connector-mining-rig-120mm
@WilliamRamsey wouldn’t the filters buckle under negative pressure?
@jcagar will cavitate some, but minor frame would hold, or cardboard/plastic slats.
@WilliamRamsey to prevent occurence of buckling, lateral bracings must be provided, along with support systems.
@jcagar Right, which can be achieved easy enough. I don't believe the force is particularly awesome.
@jcagar Using a traditional box filter. DC barrel plugs could allow for interoperability of various fixture designs.
@jcagar A sack was the simplest shape I made. If sacks can be mass-produced, glued instead of taped together, unit cost is reduced.