Cabin Humidity Control: Condensing Heat Exchanger (2D)

Every crewed spacecraft has to solve the same quiet problem: people constantly add water vapor to the air just by breathing and sweating, and if nothing pulls it back out, the cabin fogs up and metal surfaces start to sweat. This 2D companion strips the 3D condensing heat exchanger simulator down to a clean side-view schematic driven by the same psychrometric model — a cooled core that chills a stream of cabin air below its dew point so excess moisture condenses onto the fins and drips into a collection tank, exactly as the ISS Common Cabin Air Assembly does. Adjust crew size, cabin temperature, core coolant temperature and airflow, and watch the cabin mist thin or thicken, droplets swell and drip on the CHX fins, and the tank fill in real time while relative humidity, dew point and collection rate update live. Drag to pan the diagram and scroll to zoom in on the core.