Mastodawn

José - Luis Gutiérrez Villanue 6d ago

📍 En una semana: III Jornada Científica sobre gas radón en Barcelona.

ICRP 137, nueva ISO de exposición personal, remediación y prevención.

Claves para avanzar en salud ambiental.

🔗 https://radonova.es/iii-jornada-cientifica-sobre-gas-radon-barcelona-2026/

#Radón #IAQ #Prevención

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Haven Apr 7

Update on this, even more confused. I dismantled the portable AC because it does not heat, and we have gone from very hot to very cold. The HVAC for the floor and my unit are still displaying the same error and are apparently off. I can't detect any airflow from the diffusers nor across the doorway. Even with the windows closed, The CO2 concentration has stayed remarkably low, not getting above 650 ppm all night. The hallway CO2 was much higher last night ~900 ppm. How is this possible? I know the windows aren't super well insulated, but could the fresh air dampers not have closed when the system shut down?
#HVAC #IndoorAirQuality #IAQ #Askfedi

Haven Apr 3

#AskFedi #IAQ #CleanIndoorAir #HVAC folks:
My apartment's HVAC system, which is connected to an individual rooftop unit with its own fresh air intake ducts--is currently down. My understanding is that the issue is with the control module that is connected all the in-apartment on this floor, so all of our units are turned off.
I have a CR box air purifier, and a small portable one with miniature #HEPA filters, and an #Aranet4 air quality monitor.

Maintenance have installed a one-hose portable AC unit, with thermal tape around the edges of the open window. From the perspective of minimizing aerosol concentration, what is the best approach with respect to fan speed/mode options, i.e., always on, or only when cooling; blocking the undercut in the door, and opening a window in a different room?

I had also considered not using the portable AC at all; minimizing opening of the door and venting via windows with colder air at night.

José - Luis Gutiérrez Villanue Apr 1

El 17 de abril estaré en Barcelona como ponente en la III Jornada Científica del Gas Radón organizada por COFIS.

Seguimos trabajando para mejorar la medición, la gestión del riesgo y la concienciación sobre radón.

Inscripción: https://espaciofisico.cofis.es/inscripciones-iii-jornada-del-radon/

#Radón #SaludAmbiental #IAQ

Christophe Veltsos Apr 1

#IAQ #CleanAir Matters 👇 Associations of Cognitive Function Scores with Carbon Dioxide, Ventilation, and Volatile Organic Compound Exposures in Office Workers: A Controlled Exposure Study of Green and Conventional Office Environments (2015) pmc.ncbi.nlm.nih.gov/articles/PMC...

Associations of Cognitive Func...

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Adrian Segar Mar 30

I share air quality readings at airports, planes, ground transportation, a convention center, and my hotel during a trip to Puerto Rico.

https://www.conferencesthatwork.com/index.php/meeting-industry/2022/05/air-quality-readings

#travel #safety #AirQuality #readings #IAQ #plane #airport #bus #ConventionCenter #hotel #flying

EPFL Fribourg campus Mar 3

Invited speaker Prof. Conrad Völker from Bauhaus Uni Weimar at the Fribourg Campus this Wednesday (March 5) for an open talk about Indoor airflow measurement, visualization, and simulation.
All welcome !
https://www.smartlivinglab.ch/en/indoor-airflow-measurement-visualization-simulation/
#IAQ @ENAC

- Invited talk | Conrad Voelker, Professor at Bauhaus-University Weimar

Insights into Indoor Airflow during the Pandemic and Beyond: Measurement, Visualization, and Simulation Open to all audiences, this talk introduces new methods for visualizing and quantifying indoor airflow using Schlieren techniques – both with a large-scale mirror and through Background Oriented Schlieren in 2D and 3D – adapted to capture the subtle density gradients characteristic … <p class=link-more><a href=https://www.smartlivinglab.ch/en/indoor-airflow-measurement-visualization-simulation/ class=more-link>Lire la suite</a></p>