Abstract
We present the results of experimental studies of heat and mass transfer processes in a metal hydride reactor under absorption and release of pure hydrogen. The hydrogen absorption/release reaction is shown to proceed in three stages: (I) heating/cooling of the absorbing material bed up to the reaction temperature; (II) equilibrium absorption/release; and (III) reaction completion. The transition from the first stage to the second is accompanied by a sharp decrease in the hydrogen flow rate at the reactor input/output. The crisis is caused by the ineffective pick-up/application of hydrogen absorption/release heat from/to the absorbing material bed. The reactor charging/discharging operation modes balanced against heat transfer make it possible to avoid crisis and to proceed under a constant flow rate of hydrogen.
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Original Russian Text © V.I. Borzenko, D.O. Dunikov, S.P. Malyshenko, 2011, published in Teplofizika Vysokikh Temperatur, 2011, Vol. 49, No. 2, pp. 256–264.
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Borzenko, V.I., Dunikov, D.O. & Malyshenko, S.P. Crisis phenomena in metal hydride hydrogen storage facilities. High Temp 49, 249–256 (2011). https://doi.org/10.1134/S0018151X11010019
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DOI: https://doi.org/10.1134/S0018151X11010019