A 50’ × 17.5’ ellipsoid dome has a known internal cubic volume (calculator link: Ellipsoid Dome Calculator - Monolithic Dome Institute ). But what I’m trying to figure out is how much of that is actually breathable air, and how long could two adults stay inside if the air exchange system had to be shut down—say, during wildfire smoke?
Anyone with experience in ventilation math, CO₂ load, or sealed-enclosure modeling—your insight would be great.
I thought about this after posting. My wife and I have a CO2 meter that a workshop attendee got me interested in. We love it. Battery lasts a long time, and it data logs! Very cool