Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Shimadzu Corporation

Panasonic Intellectual Property Management Co., Ltd.

Matsushita Refrigeration Company

Shinji Miyauchi

Masataka Ozeki

Akinari Nakamura

Tetsuya Ueda

Tomonori Asou

Motomichi Katou

Akira Maenishi

Yoshikazu Tanaka

Yoshihiro Ueno

Koichi Nishimura

Yoshiaki Yamamoto

Terumaru Harada

Kunihiro Ukai

Kiyoshi Taguchi

Osamu Ogawa

Takeshi Tomizawa

Kenji Sato

Yasuhiro Mori

Masao Yamamoto

Jiro Suzuki

Masaru Nishiguchi

Susumu Adachi

Yoshio Horiike

Makoto Sato

Toshiyuki Shono

Kiichi Koike

Takuro Izumi

Yutaka Yoshida

Shinichi Nakane

Kazutaka Asano

Masaru Koeda

Hiroshi Nagasato

Takashi Omori

Hiroaki Kaku

Tetsuya Nagano

Manabu Takahashi

Makoto Tsuboi

Keiichi Sato

Nin Kake

Akihito Ootani

Koichiro Kitagawa

Hiroyuki Zimbo

Toru Kushisaka

Hitoshi Oishi

Akira Sato

Hiroko Ueda

Asaka Kohiyama

Yashikazu Tanaka

A spectroscopic element and a detector are disposed along a circumference of one Rowland circle. The spectroscopic element has a spectral surface whose length, measured along the Rowland circle, is shorter than a length in the Rowland circle plane, of an irradiation surface irradiated with excitation beams emitted to a sample holder. The spectroscopic element and the sample holder are disposed to separate a group of characteristic X-rays within a common spectral range of the spectroscopic element.

X-ray spectroscopic analysis apparatus and elemental analysis method

Four main rod electrodes included in a main electrode section are disposed in a rotationally symmetric manner around an ion optical axis. Among four pre-rod electrodes included in a pre-electrode section disposed in front of the main electrode section, two are in contact with a circle of a radius r, whereas the other two are disposed to be in contact with a circle of a radius Rlarger than r, resulting in rotational asymmetry around the ion optical axis. Accordingly, a shape of acceptance on an x-y plane regarding positions of ions in the pre-electrode section becomes elliptical. This allows the shape of the acceptance to become gradually flat as the ions travel along the ion optical axis, reducing a mismatch between emittance of incoming ions and the acceptance on a receiving side, and relieving ion loss during ion introduction.

Quadrupole mass filter and quadrupole mass spectrometrometer

A controller in a fuel cell system operates a fuel cell in a normal mode or in a special mode. In the normal mode, the fuel cell is operated to satisfy at least one of a first operation condition and a second operation condition, under the first operation condition an operation time of the fuel cell per unit period is equal to or shorter than a unit allowable operation time, under the second operation condition the number of times of operation of the fuel cell per unit time is equal to or less than a unit allowable number of times of operation, and in the special mode, the fuel cell is operated without being limited by at least one of the first operation condition and the second operation condition.

Fuel cell system and operation method thereof which ensures the system will perform normal operation after operating in a special operation mode

A distributed power supply system is configured to execute a process for determining whether or not to permit a diagnostic process in such a manner that it is determined whether or not a difference between a set upper limit value and an actual measurement current value is not less than a load current value, the set upper limit value being a predetermined upper limit value set with respect to a detected current of a current sensor, the measurement current value being detected by the current sensor in a state where the diagnostic process is not executed, and the load current value being a value of a current flowing from a commercial power utility to a power load during execution of the diagnostic process; and if it is determined that the difference is not less than the load current value, the controller permits the diagnostic process.

Distributed power supply system and control method thereof

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 U, 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.

Time-of-flight mass spectrometer

A fuel cell power generation system includes 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, bypassing the fuel gas generating means. 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.

System and method of fuel cell power generation

A fuel cell system of the present invention includes: a fuel cell () configured to generate electric power using a fuel gas and an oxidizing gas; an anode off gas channel () through which an anode off gas discharged from an anode () of the fuel cell () flows; a gas-liquid separator () disposed on the anode off gas channel () to separate moisture from the anode off gas, and including a water reservoir () configured to store the separated moisture as water; a temperature detector () configured to detect a temperature of the water reservoir (); and an operation allowing device () configured not to allow an operation of the fuel cell system in a case where the temperature detected by the temperature detector () is equal to or higher than a first threshold that is higher than a standard ambient temperature.

Fuel cell system

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.

Method for operating fuel-cell electricity-generating device

The invention provides a power generation system having a power generator () configured to generate DC power; an electric power load (); a current detector configured to detect a current flowing between a system power supply () and an interconnection point (); and a switch () configured to switch to supply the DC power from the power generator () and AC power which is fed from the system power supply () through the interconnection point (), to the electric power load ().

Power generation system and operation method thereof

A method of operating fuel cell system includes generating electricity by a fuel cell using fuel gas and oxidizing gas and allowing cooling water to flow in the fuel cell and thereby cooling the fuel cell. The method includes transferring moisture from exhaust gas to supply gas using a first humidifier, the exhaust gas being discharged from the fuel cell, the supply gas being supplied to the fuel cell, and transferring moisture from the cooling water to the supply gas humidified using a second humidifier. The method includes at least one of detecting humidity of the supply gas humidified, detecting temperature of the cooking water, detecting the flow rate of the supply gas and detecting the amount of electricity generated by the fuel cell. The method also includes controlling the humidity of the supply gas humidified based on the value detected.

Fuel cell system operation method

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.

Grating, negative and replica gratings of the grating, and method of manufacturing the same

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.

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.

Fuel-cell power-generation system and method

A method of operating a fuel cell cogeneration system comprises the steps of cooling a fuel cell by circulating an internal heat transfer medium through the fuel cell while the fuel cell is generating electric power, storing an external heat transfer medium in a heat utilization portion, detecting remaining calories of the heat utilization portion by a first detector provided at the heat utilization portion, increasing a temperature of the fuel cell to an operating temperature by carrying out a first temperature increasing operation, and increasing the temperature of the fuel cell to the operating temperature by carrying out a second temperature increasing operation.

Fuel cell cogeneration system, method of operating

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.

Method of operating a fuel cell system by detecting leakage of a combustible gas

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Nara, Japan

Shinji Miyauchi