摘要:
Methods of generating hydrogen are described, wherein a hydride is hydrolysed in a reaction chamber (10) in an exothermic reaction by the addition of liquid water to be vaporized in the reaction chamber (10), and/or the added water is controlled in relation to the hydrogen generated according to a value x defined by equations, which, for a divalent metal, reads: MH 2 + x H 2 O→ (2-x) MO + (x-1 ) M(OH) 2 + 2 H 2, wherein M symbolizing the divalent metal and x is preferred in the interval of 1.2 to 1.3. The equation as well as the values of x depend on the sort of hydride, i.e. whether a 1-, 2-, 3- or 4-valent hydride is applied. Furthermore a hydrogen generator (3) for performing these methods is depicted comprising a reaction chamber (10), optimally in form of a replaceable cartridge and being surrounded by a non-linear thermal insulation, with a water supply inlet (11) and a hydrogen outlet (13), wherein in series with the water supply inlet (11) and/or the hydrogen outlet (13) porous materials (34/35, 41/42) permeable to steam and/or hydrogen but not permeable to hydride and/or liquid water are arranged. The hydrogen generator (3) comprises a water storage vessel (16), also a part of the replaceable cartridge, acting also as condenser for recycled water; and if coupled to a fuel cell (2), the product water of the fuel cell (2) is also supplied. For system balancing, an electric buffer is applied.
摘要:
A control device of a fuel cell system includes an electric conductivity comparing unit for comparing the electric conductivity of the water inside the ion exchanger which is measured by the electric conductivity measuring unit with a predetermined electric conductivity range, and an ion exchange environment determining unit for arbitrarily determining whether or not air has been mixed into an ion exchanger and whether or not the ion exchange efficiency of the ion exchanger has been degraded, based on a comparison result by the electric conductivity comparing unit.
摘要:
A fuel cell system supplies anode and cathode gases, and generates power through an electrochemical reaction of the gases in accordance with a load. The system includes a compressor that supplies the cathode gas to a fuel cell stack, and a pressure regulator valve that adjusts the pressure of the cathode gas in the fuel cell stack. The system sets a target cathode pressure based on a power generation request to the fuel cell stack, and controls an operation amount of the compressor and an opening degree of a pressure regulator valve based on the target cathode pressure. The temperature of air discharged by the compressor is restricted to an upper temperature limit by restricting the operation amount of the compressor and/or the opening degree of the pressure regulator valve based on two parameters, i.e., the inlet temperature and the torque of the compressor.
摘要:
A fuel cell system includes a fuel cell (24), a reforming portion (23) generating a fuel by a source material and water, a combustion portion (26), a casing (21), a supply device (42c) supplying the source material, a flow sensor (42a) detecting a supply flow rate of the source material, a temperature sensor (26b) detecting a temperature of the combustion portion (26), and a control device (60) controlling the supply device (42c) and including a temperature obtaining means (step 304, steps 320, 322, 324) for obtaining the temperature of the combustion portion (26) by controlling the supply device (42c) to supply the source material at a constant supply flow rate (F), a temperature deviation obtaining means (step 404) for obtaining a temperature deviation of the combustion portion (26), a supply flow rate deviation obtaining means (step 406) for obtaining a deviation of the supply flow rate from the temperature deviation, and an adjustment means (step 410) for adjusting the supply flow rate on the basis of the deviation of the supply flow rate.
摘要:
A mixer/eductor assembly for use with a fuel cell stack having an anode-side and a cathode-side, said mixer/eductor assembly mixing and at least partially combusting anode exhaust gas output from the anode- side and an oxidant supply gas, said mixer/eductor assembly comprising: a first area receiving and mixing a first portion of the anode exhaust gas and a first portion of the oxidant supply gas to form a first mixture, the first area being configured so as to initiate a combustion reaction in the first mixture; a second area coupled with the first area, the second area receiving and mixing a second portion of the anode exhaust gas and a second portion of the oxidant supply gas to form a second mixture, wherein: the first mixture has a predetermined oxidant to fuel ratio smaller than the oxidant to fuel ratio of the second mixture; and the first area provides an ignition source to promote continuous combustion of the second mixture in the second area.
摘要:
The disclosed fuel cell system includes a reformer that generates a reformed gas containing hydrogen by reforming a raw fuel and water with a reforming catalyst, a fuel cell that generates power in a cell unit using the reformed gas, a raw fuel introducing unit that introduces the raw fuel into the reforming catalyst, an unreformed gas generation information acquisition unit that acquires information on unreformed gas generation in the reforming catalyst, and a control unit that performs introduction amount reduction control of causing the raw fuel introducing unit to reduce the introduction amount of the raw fuel on the basis of the information on unreformed gas generation acquired by the unreformed gas generation information acquisition unit.
摘要:
A fuel cell system (100) includes: a fuel cell (12) configured to generate electric power by causing a fuel gas and an oxidizing gas to react with each other; a casing (11) accommodating at least the fuel cell (12), the casing (11) including an air inlet (16) and an exhaust outlet (17) formed therein; a supply passage (18) connected to the air inlet (16), the supply passage (18) being configured to introduce external air into the casing from outside of the casing; an exhaust passage (19) connected to the exhaust outlet (16), the exhaust passage (19) being configured to exchange heat with the supply passage (18) and discharge at least air inside the casing to the outside of the casing; an air supply device (15) configured to introduce the external air into the casing through the supply passage (18); a temperature detector (20) disposed such that at least one of the inside of the casing (11), the supply passage (18), and the exhaust passage (19) is provided with the temperature detector (20), the temperature detector (20) being configured to detect a temperature; and a controller (21) configured to control at least the air supply device (15). If the temperature detected by the temperature detector (20) after the controller (21) has caused the air supply device (15) to operate is lower than or equal to a first predetermined temperature, the controller (21) reduces an amount of air supplied by the air supply device (15) and causes the air supply device (15) to continue operating.