| 摘要 |
The reactant gas manifolds ( 12 - 15 ) of a PEM fuel cell are modified to provide insulated manifolds ( 14 a) having inner and outer walls ( 30, 31 ) closed off by a peripheral wall ( 35 ) to provide a chamber ( 36 ) which may be filled with a vacuum, a low thermal conductivity gas, a VIP ( 59 ) or a GFP ( 63 ). Single walled manifolds ( 14 d , 14 e) may have VIPs or GFPs inside or outside thereof. An insulation panel ( 40 ) similarly has inner and outer walls ( 42, 43 ) closed with a peripheral wall ( 45 ) so as to form a chamber ( 46 ) that may contain a vacuum, a low thermal conductivity gas, a VIP or a GFP. The tie rods 9 a may be recessed 50 into the pressure plate 11 a of the fuel cell stack to allow a flush surface for the insulation panel 40.
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