▎ 摘　　要

NOVELTY - The dehumidifier (14) has first and second channels (56,58) for transporting air at first and second pressure. A graphene oxide barrier separates the first and second channels. The relatively lower pressure of air in the second channel causes water vapour to be drawn out of the air in first channel. USE - Dehumidifier for removing water vapour from fluid. ADVANTAGE - The cooler ambient air flowing in the second channel between the inner tube and the outer tube causes a decrease in the temperature of the oxygen-depleted air flowing within the inner tube such that, when the oxygen-depleted air reaches the fuel tank and temperature is decreased sufficiently to significantly reduce the flammability of the fuel. The fan or pump serves to reduce the pressure of air flowing in the second channel in the region between the inner tube and the outer tube, thus aiding the removal of water from the oxygen-depleted air flowing through the inner tube. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a system for supplying inert gas to a fuel tank; and (2) a method for dehumidifying air. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of an inerting system. Inerting system (10) Fuel cell (12) Dehumidifier apparatus (14) Fuel tank (16) Fuel (18)