🏚️ Shelter Room Lab: Capacity, Ventilation, CO2, Heat and Humidity

A basement shelter room cut open in 3D: set floor area, people, leakage, stack effect, door, fan and weather, then run hours in seconds to see CO2, oxygen, temperature, humidity, condensation and battery light follow well-mixed balance equations, with an experiment that finds the maximum occupancy against the analytic CO2 balance.

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install