| 摘要 |
A cooling system ( 10 ) is provided for use with a fuel processing subsystem ( 12 ) for reducing a level of carbon monoxide in a reformate flow ( 14 ) for a proton exchange membrane fuel cell system ( 16 ). The fuel processing subsystem ( 12 ) includes first and second preferential oxidizers ( 18, 20 ) to oxidize the carbon monoxide carried in the reformate flow. The reformate cooling system ( 10 ) includes a coolant flow path ( 30 ), a reformate flow path ( 32 ), and first, second, third, and fourth heat exchanger core portions ( 34, 36, 38, 40 ). The core portions ( 36-40 ) are arranged in numbered sequence along the reformate flow path ( 32 ) with the first and second core portions ( 34, 36 ) located upstream of the first preferential oxidizer ( 18 ), and the third and fourth core portions ( 38, 40 ) located downstream of the first preferential oxidizer ( 18 ) and upstream of the second preferential oxidizer ( 20 ). The first and second core portions ( 34, 36 ) are arranged in numbered sequence along the coolant flow path ( 30 ), one of the third and fourth core portions ( 38, 40 ) is arranged upstream of the first core portion ( 34 ) along the coolant flow path ( 30 ), and the other of the third and fourth core portions ( 38, 40 ) is arranged downstream of the second core portion along the coolant flow path ( 30 ). |
