Abstract:
Disclosed is a hydrogen generator that produces hydrogen by thermal decomposition. An electric circuit including a plurality of parallel branches, each including at least one electric heating element, is arranged in a sequence. The circuit also includes a normally open switch between adjacent branches and a normally closed switch in each branch but the last to provide current to the heating elements in the sequence of the parallel branches. Each heating element provides heat to thermally decompose a portion of a reactant, open the normally closed switch in the same branch, and close the normally open switch following that branch, energizing and deenergizing the heating elements in sequence. Each of the normally open switches includes a switch material with a resistivity that permanently decreases to close the switch in response to heating, and each of the normally closed switches opens in response to heating.
Abstract:
In aspects of the disclosure, a fuel cartridge wherein the fuel is in a powdered form is admixed with inert materials such as alumina or other ceramics to improve thermal conductivity. Said cartridge having fuel zones, heating zones, and controllers to selectively heat fuel zones and thereby generate hydrogen via decomposition of fuel is disclosed.
Abstract:
Disclosed herein is a method of producing hydrogen, including selectively applying heat to a fuel within a canister thermally insulated and inside a cartridge, firing fuel with heating elements to facilitate decomposition and release hydrogen, and, removing said hydrogen from said cartridge via a fluid communication means.
Abstract:
A hydrogen generator includes a cartridge including a plurality of thermal conductors each having an outer wall assembled together to form a housing. A plurality of fuel pellets provided on the plurality of thermal conductors. Each fuel pellet has a hydrogen-containing reactant that will react to release hydrogen gas when heated. The hydrogen generator also includes a compartment configured to removably contain the cartridge. The hydrogen generator further includes a plurality of heating elements disposed in the compartment such that each heating element is in thermal communication with one of the thermal conductors when the cartridge is disposed within the compartment to generate heat to selectively heat one or more fuel pellets to initiate a reaction to produce hydrogen gas.