A dehumidifying system for a vehicle, for selectively removing water vapour from a feed gas, wherein the feed gas is vehicle cabin air;wherein the dehumidifying system comprises:a membrane separation unit, having:a membranous partition (30) comprising a selectively permeable membrane (12), the selectively permeable membrane (12) having a permeability to water vapour greater than a permeability for at least oxygen and nitrogen;a feed gas inlet for the cabin air and a retentate gas outlet for a retentate gas; and a permeate outlet for a permeate gas;a first flow pathway that communicates with a first side of a membranous partition (30); anda second flow pathway that communicates with a second face of the membranous partition (30);wherein the feed gas inlet and the retentate gas outlet communicate with the first flow pathway, and wherein the permeate outlet communicates withthe second flow pathway;ducting for supplying air from a vehicle cabin to the feed gas inlet and ducting for supplying air from outside of the vehicle; andducting for flowing the retentate gas outlet to the vehicle cabin, to circulate or recirculate retentate air to the vehicle cabin:wherein the system is configurable to have an operating mode, wherein the operating mode comprises:- supplying cabin air supplied along the ducting from the vehicle cabin to the feed gas inlet;- recirculating retentate air to the vehicle cabin via ducting from the retentate outlet; and- one or both of:supplying unheated outside air along further ducting from an outside of the vehicle to a purge gas inlet to the second fluid pathway;applying a vacuum to the second flow pathway.
DEHUMIDIFYING SYSTEMS
ENTFEUCHTUNGSSYSTEME
SYSTÈMES DE DÉSHUMIDIFICATION
2025-03-19
Patent
Electronic Resource
English
IPC: | B01D SEPARATION , Trennen / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht |