Discover and read the best of Twitter Threads about #AirPurifiers

Most recents (4)

Daily Bookmarks to GAVNet 03/29/2021 greeneracresvaluenetwork.wordpress.com/2021/03/29/dai…
Testing mobile air purifiers in a school classroom: Reducing the airborne transmission risk for SARS-CoV-2

tandfonline.com/doi/full/10.10…

#AirPurifiers #SchoolClassrooms #AirborneTransmission #COVID19 #risk
Read 8 tweets
Daily Bookmarks to GAVNet 02/23/2021 greeneracresvaluenetwork.wordpress.com/2021/02/23/dai…
The melting of large icebergs is a key stage in the evolution of ice ages

phys.org/news/2021-02-l…

#evolution #ice
Testing mobile air purifiers in a school classroom: Reducing the airborne transmission risk for SARS-CoV-2

tandfonline.com/doi/full/10.10…

#AirPurifiers #AirborneTransmission #COVID19 #classrooms #RiskReduction
Read 8 tweets
1/ Interesting paper showing high efficacy of portable HEPA #filtration to reduce aerosol concentration in a high school classroom during use.

By very experienced German aerosol group Curtius et al.; via @ASTJournal.

With short🧵on room air filtration.
doi.org/10.1080/027868…
2/ "In times when classes were conducted with windows and door closed, the aerosol concentration was reduced by more than 90% within less than 30 min. when running the purifiers (air exchange rate 5.5 ACH). The reduction was homogeneous throughout the room ..."
[note log y-scale]
3/ Figure 3: Highly reproducible reduction in aerosol particle concentration [uCPC] in a closed classroom without air purifiers (blue line) and with 3 or 4 air purifiers operating at speed 3 or 4 (max).
Read 15 tweets
Short Thread - Not farmers but water management causes cropfires

Public Health Emergency declared in #Delhi due to #AirPollution

It's not just Delhi but many parts of #NorthIndia are affected by it as shown by Himawari Satellite

#DelhiAirQuality #DelhiChokes #DelhiPollution
Like always Air Pollution becomes a topic of discussion when Delhi is facing it during crop fire season and it's eventually forgotten. Interestingly people also search for #AirPurifiers when #AirPollution also trends as shown in Google Search Trends Image
Along with private transport, industrial (including construction), power plants, Crop fires also play an important role in Delhi's pollution spikes.

Animation shows crop fires in #Punjab, #Haryana this season (VIIRS Data)

But are farmers to blame?
Read 6 tweets

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