摘要:
A hydrogen generation device or a fuel cell system of the present invention can prevent deterioration or breakage of portions of the hydrogen generation device, which is caused by thermal stress attributable to repeated operation and halt. Thus, it is possible to increase the life and enhance the stability of the device and the system.A hydrogen generation device 76 of a fuel cell system 100 includes a hydrogen generation device main body 78 including a combustor 4 provided therein for combusting a predetermined medium capable of generating hydrogen and a plurality of pipes which are connected to the hydrogen generation device main body 78 for allowing the predetermined medium flow into or out of the hydrogen generation device main body 78. A temperature gradient is formed in the hydrogen generation device main body 78 by operation of the combustor 4, whereby a high temperature portion and a low temperature portion are formed in the hydrogen generation device main body 78. All of the plurality of pipes are arranged in the low temperature portion. A support 70 supports the hydrogen generation device main body 78 from an outside of the low temperature portion.
摘要:
A fuel cell system includes: a fuel cell (1) configured to generate electric power by a reaction between fuel and an oxidizing agent; a cooling passage (3) through which a first heat medium for cooling down the fuel cell (1) flows; a heat exchanger (5) disposed on the cooling passage (3); and an exhaust heat recovery passage (7) through which a second heat medium which exchanges heat with the first heat medium by the heat exchanger (5) flows, wherein a deceleration portion (7c) configured to reduce a flow velocity of the second heat medium and a bubble release portion (7d) configured to discharge bubbles in the deceleration portion (7c) to an outside of the exhaust heat recovery passage (7) are disposed on the exhaust heat recovery passage (7).
摘要:
A method of operating a fuel cell system includes step a) of providing a package accommodating a fuel cell stack and a hydrogen-rich gas supply configured to supply hydrogen-rich gas, step b) of detecting leakage of a combustible gas, comprised of the hydrogen-rich gas or a raw fuel gas, using a combustible gas detector, step c) of injecting the combustible gas intermittently into the package through a combustible gas guide pipe, and step d) of determining whether or not detection sensitivity of the combustible gas is proper based on an output value of the combustible gas detector when step c) is preformed.
摘要:
A fuel cell system includes a fuel cell configured to generate power by consuming a fuel gas and having an outlet port through which the fuel gas flows out; a moisture removal unit configured to remove moisture contained in the fuel gas that has been sent through the outlet port; a burner located downstream of the moisture removal unit to combust the fuel gas; and a gas pipe on-off valve configured to open and close a pipe that makes the moisture removal unit and the burner communicate with each other, and the fuel cell system is designed such that the gas pipe on-off valve closes when the power generation stops.
摘要:
A fuel cell system (100) comprising: a fuel cell (1) for generating electric power using a fuel gas; a fuel gas generator section (2) for generating the fuel gas using a raw material gas; a combustor section (2a) for generating heat energy to be used for generating the fuel gas; an air feeder section (2b) for feeding air when the heat energy is generated; and a controller section (101);wherein the fuel cell is filled with the raw material gas before the fuel gas is fed, and wherein the controller section (101) performs a control operation such that the feed rate of air supplied from the air feeder section (2b) to the combustor section (2a) increases when the fuel gas generated in the fuel gas generator section (2) is supplied to the fuel cell (1).
摘要:
It has heretofore been practiced upon the occurrence of abnormalities on the equipment to make tentative conditioned operation disregarding abnormalities on the assumption that the abnormalities shall be coped with by servicemen. Thus, troubles having insignificant contents of abnormality could not be readily coped with by a simple method. There are provided a fuel cell, a fuel gas supplying unit, an oxidizer gas supplying unit, a state detecting unit of detecting the temperature of the fuel gas supplying unit, an operation controlling unit of detecting abnormalities of predetermined functions performed by the fuel gas supplying unit utilizing the results detected by the state detecting unit and performing operation control in an operation mode corresponding to the contents of abnormalities, and an operation mode switching unit of switching to an operation mode corresponding to the contents of abnormalities.
摘要:
A fuel cell system of the present invention includes: a fuel cell configured to generate electric power using a fuel; a fuel processor configured to generate the fuel from a power generation material and supply the fuel to the fuel cell; composition-related information acquiring means (22) for acquiring composition-related information related to the composition of the power generation material; and control parameter setting means (111) for setting control parameters for the fuel cell system based on the acquired composition-related information, the control parameters being related to a composition of the power generation material.
摘要:
A fuel cell system is disclosed in which the oxidative degradation of an anode of a fuel cell during an operation stop period is restrained. The fuel cell system (39) of the invention comprises a fuel cell (1) configured to generate electric power by use of hydrogen contained in a fuel gas supplied to an anode (1a) and oxygen contained in an oxidizing gas supplied to a cathode (1c); and a combustor (4) configured to combust flammable gas, and is formed such that after stopping the power generation, the flammable gas is introduced into and kept in the cathode (1c) and when discharging the flammable gas from the cathode (1c), the flammable gas is combusted by the combustor (4)
摘要:
The present invention provides a fuel cell power generation system and method, which can realize, at least at one of time periods before start of and after end of power generation, a purging of an atmosphere of a fuel gas flow channel without using nitrogen. Further, it provides a fuel cell power generation system and method, in which a highly dense carbon monoxide can be prevented from flowing into the fuel cell. A fuel cell power generation system is so structured to comprise: a fuel gas generating means for generating a hydrogen-rich fuel gas from a source material having, as a main ingredient, a compound containing carbon and hydrogen; a source material supply source for supplying a source material to the fuel gas generating means; a fuel gas supply means for supplying the fuel gas from the fuel gas generating means to a fuel gas flow channel of a fuel cell at which channel a fuel electrode is placed; and a bypass means for supplying the source material from the source material supply source to the fuel gas flow channel of the fuel cell, bypassing the fuel gas generating means, wherein at least at one of time periods before start of and after end of power generation, the source material, as a displacement gas, is injected into the fuel gas flow channel of the fuel cell via the bypass means.
摘要:
To provide a fuel cell power generator capable of reliably recognizing ignition and misfire of a burner for heating a fuel gas generator and operating safely, a fuel cell power generator comprising, a fuel gas generator for generating a fuel gas composed mainly of hydrogen from a raw material for power generation and water, a water feeder for feeding water to the fuel gas generator, and a fuel cell for performing power generation using the fuel gas and oxidant gas is provided with: a burner for heating the fuel gas generator by combusting at least one combustion fuel selected from the group consisting of the raw material for power generation, the fuel gas, and an off-gas discharged from a fuel cell; and a flame detector for detecting the state of a flame formed in the burner.