Humidifier for Fuel Cell Systems

A humidifier for transferring water vapour from a first gas stream to a second gas stream in a fuel cell system has a stack of thin plates joined together at their edges by planar sealing surfaces, with water permeable membranes between the plates. Each plate defines a gas flow passage along its top...

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Bibliographische Detailangaben
1. Verfasser:	Vanderwees Doug
Format:	Patent
Sprache:	eng
Schlagworte:	AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING BASIC ELECTRIC ELEMENTS BLASTING ELECTRICITY HEATING LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY RANGES SEPARATION TRANSPORTING VENTILATING WEAPONS
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Beschreibung
Zusammenfassung:	A humidifier for transferring water vapour from a first gas stream to a second gas stream in a fuel cell system has a stack of thin plates joined together at their edges by planar sealing surfaces, with water permeable membranes between the plates. Each plate defines a gas flow passage along its top and bottom surfaces, with an inlet and outlet defined along edges of the plate, and a flow field extending between the inlet and outlet openings. Inlet and outlet passages connect the inlet and outlet openings to the flow field, with the planar sealing surfaces including bridging portions extending across these passages. Support structures are provided throughout the flow field to support the membrane and diffusion medium layer(s). Each support structure comprises a porous material which is sufficiently porous to permit gas flow through the flow field.