That’s a good point about the space taken up. Even outside of expensive cities, construction cost is ~$150/ft2 ($1500/m2), so not even counting lost space around the unit, the cost of the floor space is likely higher than the cost of the unit if put on the floor. You got impressive results with the ceiling fan. We are working on a project to estimate the scale up speed of in-room air filtration in an engineered pandemic. It’s focused on vital industries, but there are often ceiling fans there. A big advantage of in-room filtration over masks is intelligibility, but noise can interfere with that as well (though at least you have the lip cues advantage).
That’s a good point about the space taken up. Even outside of expensive cities, construction cost is ~$150/ft2 ($1500/m2), so not even counting lost space around the unit, the cost of the floor space is likely higher than the cost of the unit if put on the floor. You got impressive results with the ceiling fan. We are working on a project to estimate the scale up speed of in-room air filtration in an engineered pandemic. It’s focused on vital industries, but there are often ceiling fans there. A big advantage of in-room filtration over masks is intelligibility, but noise can interfere with that as well (though at least you have the lip cues advantage).