3 ms·
I'm also struggling to get an idea of the size of the candle; the article gives no information and it's unclear if the photos of the demo are using the same pro
by joosters 4y ago
I'm also struggling to get an idea of the size of the candle; the article gives no information and it's unclear if the photos of the demo are using the same product as described in the text. Surely something that can produce 2600L of oxygen must be pretty big? It's a shame that the page gives no clue as to the size and weight.
Another page details a 'rugged oxygen generator' - https://minearc.com/products/emergency-response-products/rugged-oxygen-generator-rog/ https://minearc.com/products/emergency-response-products/rug... that produces 90L of oxygen over 15 minutes, and that is 115mm x 284mm, weighing 2.3kg. Confusingly, the PDF of the product specs shows that it comes with a mask - so 90L of oxygen is for one person, for just 15 minutes here? And if used with a mask, is it actually pure oxygen being produced, or breathable air (where does the nitrogen come from?) I'd love to know more, but the website doesn't tell us.
- aspectmin 4y agoAverage human: breathes approximately 7 liters per minute of air, give or take @ 21% oxygen. Maybe 22L of oxygen under normal respiratory demand. More if under stress of course. At 100% oxygen that’s 105L of O2? So guesstimating almost 100% O2? Source: am paramedic, not doctor or respiratory therapist.
- kzrdude 4y agoBreathed air is diluted right, to some lower % of oxygen content, but it needs to be in the calculation.
- urban_winter 4y agoExhaled air is about 17% oxygen, 4% carbon dioxide. So, as previous poster noted, scrubbing the CO2 is your first priority. You can't breathe air with greater than about 4% CO2 indefinitely. Oxygen levels lower than 15% are also bad. Diving rebreathers are an interesting implementation of these rules in that they are lethal if you get it wrong.