Yes, ventilating out > recirculating no question! I just wanted to raise awareness that ventilation is not instantaneous. It takes time to bring things back to safe levels in case of spikes.
A quick search brings up the CDC guidance, where they discuss air changes per hour for a room. This will be for HVAC units, which operate on a completely different magnitude of airflow compared to a kitchen extractor fan.
This also matches my experience in industrial applications, you only need a single failure point such as a spill or a large enough leak and ventilation alone is no longer enough to keep people safe. This is why it's worth considering a glove box/isolator. You could make the argument that a glove box can also leak and I'm starting to sound like a safety engineer. Anyway at home either will be fine with outside ventilation being superior if done right.
> Something weird though is that turning on my extractor fan didn’t really do much.
Does your extractor fan vent to the outside, or just recirculate through a filter? In my experience, people often overestimate how much protection ventilation provides. It mostly dilutes contaminants rather than removing or isolating them. For example, with moderately hazardous compounds, a fume hood works fine under normal use, but in the event of a spill it can’t bring levels back down quickly enough to protect the operator. In that kind of situation, an isolator makes far more sense or adding PPE, though that can be burdensome.
What really surprised me is how high the values get from just a single pan. It makes me wonder what it’s like in a commercial kitchen with multiple pans at higher temperatures, especially if the extractor fan fails and there’s no time to shut down operations to fix it.
This has been an interesting 1.5 months for Intel on all fronts. I wonder how long this deal was in the making, since the timing is impeccable, looking at the current administration's involvement with Intel.
Pretty impressive! Interesting shoutout to Längenfeldgasse (Vienna) for the cross-platform interchange. This is a pretty popular station to get to Schönbrunn Palace & Zoo, as such the majority of people changing stay on the platform and you really physically see the lean design in motion. This can probably only be done during the design phase otherwise to costly to ever change if it's even possible.