3D Cabin Condensation Simulator

Cabin Atmosphere (3D)

Crew size 4 people

Cabin temperature 22 °C

Condenser capacity 2.0 L/day

Relative humidity

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Dew point

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Rack surface temp

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Condensation risk

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How it works

The same psychrometric balance as the 2D chart version drives this scene, but rendered as a physical cabin: a translucent vapor mist thickens in the air as crew respiration and sweat add water, and once the dew point catches up to the equipment rack's surface temperature, the excess condenses into visible droplets on the cold panel instead of staying airborne.

e_s(T) = 6.1094 · exp(17.625·T / (T+243.04))  [hPa]
RH = 100 · e / e_s(T_cabin)
condensing when e > e_s(T_rack),  T_rack = T_cabin − 6°C

Mist density — the number of glowing vapor particles active scales with relative humidity; a thin haze at low RH, a dense fog as it climbs toward saturation.
Rack droplets — small spheres growing on the blue equipment rack panel; they swell while condensing is active and slowly evaporate back into the air once the condenser wins the balance.
Condenser capacity — raise it to out-pace crew vapor generation and watch both the mist thin out and existing droplets shrink; set it too low for the crew size and droplets keep growing.

This is the same electronics-damage and mold-risk failure mode a real condensing heat exchanger is sized to prevent — sitting on this side of the same physics, but staged as the cabin surface where it actually happens rather than the psychrometric chart of it.

Vapor mist Condensed droplets Equipment rack (cold surface)

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