Figure 2
From: A new device for 100 per cent humidification of inspired air
The lung model consists of a box (a) in which the temperature ismaintained at 36.0°C, a one-way valve (b), an elastic balloon (c) and awater bath (d). During the inspiratory phase the air passes from the ventilator(e) through the humidifier (f) via the one way-valve to the balloon. During theexpiratory phase the air passes from the balloon and bubbles through thewater-bath in order to reach 100% humidity at 35.5°C by the time it leavesthe lung model. The arrows indicate the direction of the airflow.