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#CorsiRosenthal

2 posts2 participants0 posts today
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Vote Out Covid

With the #LocalElections coming up in England, we're asking you to lobby your council candidates to support three pledges to help reduce the spread of #Covid and other respiratory diseases:

1. Trial air filters in local schools
2. Consider air filters for pubs, bars and restaurants
3. Publish council air quality mitigations

Please get involved at voteoutcovid.org.uk/

#UKPolitics #CovidIsNotOver #CorsiRosenthal

(Data via @DemocracyClub)

voteoutcovid.org.ukVote Out Covid: Homepage
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Public
Scrivolical

I've only just put the Corsi-Rosenthal Box into operation, but it moves a tremendous amount of air. The apartment feels dramatically better.

This self-assembled duct-taped cube is so much better than the commercial junk I've got. I can't believe I didn't get a Corsi-Rosenthal Box going earlier in the pandemic. I relied too much on my commercial junk.

This was Box #1 (with shroud), but future Box #2 will probably have 2" filters.

It's great. Recommend.

#COVID19#CorsiRosenthal
Public
Scrivolical

I've always had air filtration happening throughout the pandemic, and replaced my filters at the recommended intervals.

On Thursday of last week I noticed that there was a sale ending on "3M™ Filtrete™ Healthy Living Maximum Allergen Air Filter, MPR 1900, 20 x 20 x 1-in" at Canadian Tire, so I picked up 4 and a "Lasko Steel Portable Box Fan, 3-Speed, White, 20-in."

Tonight I assembled a Corsi-Rosenthal box.

#COVID19#CorsiRosenthal
Public
Attractive Nuisance

Here's the 20" #CorsiRosenthalBox I'm working on. Fans in rectangular housings basically don't exist in the UK, so I made a cardboard shim out of the box for this circular one.

This build was a proof of concept (hence the green masking tape rather than duct tape, and the plastic sheeting still on the #MERV13 filter boards). I was testing whether the shim and the boards would support the weight of the fan. Despite being a mock up it's surprisingly rigid!

Next stage involves building it properly (including sealing those gaps at the corners; the 20" fan is actually more like 21.5" across and the boards are 19.5"), then using my anemometer to measure the flow rate of the finished box, so I can work out what size room it can filter. I'm intending this one for a local community centre where a Queer Club meets, to make their meetings safer.

A partially constructed Corsi-Rosenthal Box. This is a cube, around 20 inches per side. The bottom is just cardboard. The top is a round black plastic fan, mounted in a hole in the middle of another piece of cardboard, and held there with black duct tape. The four sides are filter boards - cardboard frames containing cloth like filter material. The boards are attached to the top and bottom with green masking tape. There are gaps at the corners because the boards are smaller than the fan's diameter.
#CovidIsNotOver#CleanAir#CorsiRosenthal
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Jay Baker

I facilitated an online workshop for @freetechproject tonight and it's the first time we tackled technology to fight #Covid (Co2 monitors, air purifiers, #HEPA, #CorsiRosenthal boxes, #NukitTempest, etc) as well as why this is important (what Covid is, how it spreads, etc) and the small (predominantly older) group was very open to the ideas, sincerely inquisitive about the topic, interested in reducing risk, aware of inclusion issues, and sensitive to my own experiences as carer for a partner disabled by Covid. I'm also realising that people genuinely refer to "Covid" in the past tense sometimes because they wrongly associate it with government policy, while at the same time they very clearly understand that #CovidIsNotOver. My point is, keep tackling the topic, and keep giving folks the benefit of the doubt -- humans are of course good at heart and state policies, and obviously the establishment media, may very well indeed not, in fact, reflect people's actual concerns about Covid.

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