download PDF - International Center for Materials Research
download PDF - International Center for Materials Research
download PDF - International Center for Materials Research
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Approach:<br />
An off-board regenerable liquid carrier <strong>for</strong><br />
vehicles and stationary H 2<br />
gas delivery<br />
LQ*H 2<br />
LQ = liquid carrier<br />
∆ = heat<br />
Liquid<br />
Storage Tank<br />
LQ<br />
Catalytic<br />
Converter<br />
∆<br />
Heat Exchange<br />
∆<br />
Fuel Cell<br />
H 2<br />
‣ Con<strong>for</strong>mable shape liquid<br />
tank with design to<br />
separate liquids; 22.5<br />
gallons <strong>for</strong> 5 kg hydrogen<br />
at 6 wt. % and unit density<br />
‣ Heat exchange reduces<br />
the vehicles’ radiator load<br />
by ca. 40% (<strong>for</strong> ∆H of 12<br />
kcal/mol H 2 and 50% FC<br />
efficiency)<br />
LQ*H 2<br />
+ heat (∆H)<br />
Catalyst<br />
P < 10 atm.<br />
P > 50 atm.<br />
Catalyst<br />
LQ + H 2<br />
Maximum energy efficiency: by (a) recovering the<br />
exothermic (-∆H) of hydrogenation and (b) utilizing the<br />
waste heat from the power source to supply the ∆H <strong>for</strong><br />
the endothermic dehydrogenation.<br />
6<br />
© Air Products and Chemicals, Inc, 2006
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