CABIN INTERIOR DEHUMIDIFYING STRUCTURE

摘要

PROBLEM TO BE SOLVED: To improve energy efficiency of a fuel cell vehicle by dehumidifying air to be air-conditioned and humidifying air to be supplied to a fuel cell stack without accompanying energy consumption. SOLUTION: Air in a cabin air conditioning system 10 is supplied to a moist gas inlet 14a and air compressed by an air compressor 21 in a stack intake system 20 is supplied to a moist gas outlet 14b. A water vapor exchanging device 14 makes water vapor permeate selectively from the air in the air conditioning system with higher water vapor partial pressure to the air in the stack intake system with lower water vapor partial pressure. Air dehumidified by the water vapor exchanging device 14 flows from the moist gas outlet 14b to an air mix door 16. Compressed air humidified by the water vapor exchanging device 14 is sent from a humidified gas outlet 14d to an aftercooler 22. Air cooled by the aftercooler 22 and humidified by the insufficient quantity by a humidifier 23 is supplied to the fuel cell stack. COPYRIGHT: (C)2004,JPO&NCIPI