摘要:
A stable and high reliability fuel cell electricity-generating device capable of generating electricity even in the case of sudden drop of load power. A fuel cell generating electric power from a fuel and an oxidizer, a fuel processor producing fuel to be supplied into the fuel cell from an electricity-generating material, a combustion device combusting a residual fuel gas unconsumed in the fuel cell to raise the temperature of the fuel processor, and an electric power generation instructing means of determining the electric power generated by the fuel cell, wherein when the electric power generation instructing means decreases the electric power generated by the fuel cell depending on the decrease of load power to be supplied, the rate at which the generated electric power is decreased is made different depending on the change of the temperature of the fuel processor.
摘要:
A grating of the present invention has a groove cross section shaped, for example, like a sinusoidal wave or a sawtooth other than a laminar shape, and a groove bottom part shaped as a flat form. In a region wherein the groove cycle and the used wavelength are the same degree for wavelengths from near infrared to infrared, the grating of the present invention has the excellent spectrum performance (high efficiency in balance in a wide wavelength zone) more than a holographic grating and an echellette grating in related arts. When replicas for the grating of the present invention are manufactured, the engagement force of grooves with each other is small as the groove aspect ratio is small, and a release agent sufficiently reaches the groove bottom as the groove bottom is large.
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:
A condenser condenses an unused exhaust gas exhausted from a fuel cell and recovers water, condensation-capacity detection means always monitors the condensation capacity of the condenser, control means controls an output of heat-transport-medium circulation means, stores the exhaust heat of the fuel cell in heat-using means when a sufficient condensation capacity is left, and stops the heat-transport-medium circulation means to complete exhaust-heat recovery when the condensation capacity lowers. Moreover, a fuel cell, a cooling pipe through which a first heating medium of carrying the heat of the fuel cell circulates, a cooling-water pump of circulating the first heating medium, and a fuel-cell-temperature detector of detecting the temperature of the fuel cell are used to operate a cooling-water pump until the temperature detected by the fuel-cell-temperature detector becomes a predetermine threshold value or less even after supply of a fuel and an oxidant to the fuel cell is stopped.
摘要:
A cogeneration system of the present invention includes: a power generation system equipped with a power generator; waste heat utilization system for recovering waste heat from the power generator, storing the heat, and utilize the waste heat as an effective output thermal energy; and a waste heat utilization promoting system for promoting utilization of the effective output thermal energy in the waste heat utilization system to avoid a stop of the system associated with a heat storage amount reaching a full amount. The waste heat utilization promoting system is equipped with a stop predicting function to predict an operation stop of the power generation system by comparing a current operating state with a reference pattern and computing an operation sustainable time, and a stop warning function to give the user a warning of the operation stop with an image or sound according to stop prediction information obtained.
摘要:
A fuel cell system includes: a fuel cell; a fuel generator for generating a fuel gas from a feedstock; a fuel supplying conduit for supplying the fuel gas produced by the fuel generator to the fuel cell; a fuel exhausting conduit for introducing a remaining fuel gas, which has not been consumed by the fuel cell, to a combustion chamber of the fuel generator; a first bypass conduit for connecting the fuel supplying conduit with the fuel exhausting conduit; a second bypass conduit for supplying the feedstock to the fuel exhausting conduit. The fuel cell system further comprises: either one of (1) a gas pathway switching device A installed at a junction of the fuel supplying conduit and the first bypass conduit; and (2) a gas pathway switching device B installed at a junction of the fuel exhausting conduit and the first bypass conduit. The second bypass conduit is connected to the fuel exhausting conduit at an upper stream side of the flow of the remaining fuel gas than the junction with the first bypass conduit.
摘要:
An abnormality detecting apparatus constantly monitors even a slight amount of gas which has leaked by checking a gas supply pipe when it is determined that the pressure regulating function of a pressure regulator is abnormal. The abnormality detecting apparatus detects an abnormality of the regulated pressure of a pressure regulator appropriately by comparing the regulated pressure with a predetermined low value of a pressure regulating range when the gas flow rate is high and with a predetermined high value of a pressure regulating range when the gas flow rate is low.
摘要:
A power generation system includes: a hot water storage tank; a fuel cell apparatus configured to generate electric power; a heat supply apparatus provided separately from the fuel cell apparatus and configured to supply heat to the hot water storage tank; and a controller configured to operate the fuel cell apparatus in accordance with a predetermined first operation plan, and to operate the heat supply apparatus in accordance with a predetermined second operation plan. The controller is configured to perform, based on the first operation plan, second operation plan change control to operate the heat supply apparatus in a manner different from the predetermined second operation plan. The second operation plan change control is to reduce an output of the heat supply apparatus in accordance with an operation of the fuel cell apparatus, the operation being performed in accordance with the first operation plan.
摘要:
Provided is a time-of-flight mass spectrometer having a reflectron which eliminates energy dependency of the flight time of ions having the same m/z while ensuring a high degree of design freedom. An electric field created by the reflectron is virtually divided into a decelerating region for decelerating ions and a reflecting region for reflecting ions. For an ion having a mass-to-charge ratio which has departed with initial energy higher than Ud, the total flight time required for the ion to travel through a free-flight region and the decelerating region into the reflecting region and return will be equal to the total flight time required for an ion of the same mass-to-charge ratio to make a round trip in which the ion turns around at a point of the reference potential value at the boundary between the decelerating region and the reflecting region or in the decelerating region.
摘要:
A stable and high reliability fuel cell electricity-generating device capable of generating electricity even in the case of sudden drop of load power includes a fuel cell generating electric power from a fuel and an oxidizer, a fuel processor producing fuel to be supplied into the fuel cell from an electricity-generating material, a combustion device combusting a residual fuel gas unconsumed in the fuel cell to raise the temperature of the fuel processor, and an electric power generation instructor determining the electric power generated by the fuel cell, wherein when the electric power generation instructor either decreases or prevents a decrease in the electric power generated by the fuel cell upon a decrease of load power to be supplied, depending on the temperature of the fuel processor.