Abstract
In the present study, an embedded cooling tube (ECT) type metal hydride (MH) reactor has been designed, manufactured, and tested for possible integration with a low-temperature Polymer Electrolyte Membrane Fuel Cell (LT-PEMFC) at 40–60 °C. The MH reactor filled with 21.5 kg La0.9Ce0.1Ni5 has been subjected to a series of parametric tests. At 20 bar, 25 °C, the MH reactor absorbed 276.08 g hydrogen in 1129 s, accounting for 1.28 wt.% charged capacity. At 40 °C, the reactor desorbed 282.8 g hydrogen within 4860 s, which, if discharged through a mass flow controller (MFC) at a steady rate, could feed a 3.5 kW LT-PEMFC for the same duration maintaining the reactor pressure above 1 bar. An increase in discharging temperature to 60 °C showed about 54% increase in average hydrogen discharge rate. Influence of variation in heat transfer fluid (HTF) flow rate was discovered to be insignificant for both charging and discharging.
Published Version
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