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Nathalie Ventilation Profile picture
Nathalie Ventilation
@VentiloAngel
Dec 6 • 10 tweets • 3 min read
1/When it comes to infection prevention, particularly for COVID-19 and other pathogens, it’s important to consider all scientifically-backed options, including air purification systems and UV disinfection. 2/ Organizations like ASHRAE 241 and the Harvard Healthy Building COVID-19 Risk Calculator recognize UV disinfection as a viable technology for infection control in indoor environments.
healthybuildings.hsph.harvard.edu/tools/covid-19…

ashrae.org/about/news/202… Image
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Oct 12 • 8 tweets • 1 min read
Helplessness is one of the most challenging experiences for humans, just as it is for animals. This has been extensively studied, particularly in dogs. 🐶 #Helplessness #Psychology
👇 In the face of helplessness, Stoic philosophy offers a path: focus on what we can control, create an action plan, and accept with serenity what lies beyond our control. 🧘‍♂️ #Stoicism #Philosophy
Sep 28 • 24 tweets • 6 min read
There’s a controversy around Nukit, who sells UV lamps to reduce viral transmission risks. What started as a simple customer post sharing their use of these lamps at an airport has spiraled into accusations of privilege, racism, and even doxxing. what’s really going on 👇

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Image The controversy began when a customer, @Kevski_Bray, shared a photo at an airport cafeteria, using a Nukit UV lamp during a mandatory trip. The post went viral, garnering hundreds of thousands of views, but the reactions were overwhelmingly negative



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Sep 18 • 9 tweets • 2 min read
UV disinfection settings, pictures from study ….

Far-UVC: Technology Update with an Untapped Potential to Mitigate Airborne Infectionshttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC10704226/ Image Image
Sep 12 • 8 tweets • 3 min read
Ventilation is a case-by-case situation and it could be very challenging, you give an example. The background noise is in the calculator i propose. You can use it to try a solution or a compromise for a specific situation.

For some challenging situation, UV will be a most 🧵
Image I encourage people to use calculation tools to find personalized solutions for their workplace, school, or child’s daycare, etc. I helped my friend find solutions, and it was very challenging.
Sep 11 • 8 tweets • 3 min read
I recently received a DM about the 45 dB figure I mentioned regarding noise levels in schools. This is a serious topic because noise pollution can significantly impact health and learning. Let me clarify where this figure comes from
🧵 The 45 dB figure is often discussed in the context of minimizing classroom noise to avoid disruptions and support effective learning. It’s a general reference rather than a strict standard.
Sep 11 • 30 tweets • 9 min read
Updated Air Purifier Analysis
Refined analysis for classrooms (38 dB background noise, 200 CFM, 28 students).
Focus on dust CADR for ASHRAE 241 and ensure total noise max 45 dB. Compare quieter vs. louder models with new data. Check it ou #ASHRAE241 #45dB
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Image Thanks to @joeyfox85 and other person, I’ve adjusted the analysis to reflect that #ASHRAE241 considers infectious aerosols as 0.3x smoke + 0.4x dust + 0.3x pollen. Intertek tests show 5% of the dust CADR. This adjustment ensures more accurate evaluation and easier to meet goals