Hitachi, Ltd.

Hiroto Naito

Yuzo Shirakawa

Takao Ishikawa

Kiyoto Ito

Kanako Esaki

Kohsei Matsumoto

Naoki Yoshimoto

Hiroaki Hasegawa

Masatoshi Sugimasa

Provided is a device that uses a high-temperature exhaust gas released from an internal combustion engine to produce a fuel. The present invention relates to the fuel production device including the internal combustion engine, an electrolysis device connected to the internal combustion engine, and a hydrogenation reactor connected to the electrolysis device, wherein the electrolysis device is a device for decomposing high-temperature water vapor contained in the exhaust gas from the internal combustion engine into hydrogen and oxygen, and the hydrogenation reactor is a device for converting the hydrogen resulting from the decomposition to the fuel.

Fuel production device

The invention provides a cogeneration system capable of adjusting a heat-to-electric power ratio not only in an increasing direction, but also in a decreasing direction. The cogeneration system includes: a power generation device configured to supply electric power; a first heat exchanger configured to exchange heat between exhaust of the power generation device and water, so as to lower a temperature of the exhaust and obtain steam from the water; a reformer configured to generate a reformed gas by the steam reacting with a fuel; a second heat exchanger configured to cool the reformed gas generated by the reformer by heat exchanging; a reformed gas supply device configured to supply the reformed gas cooled by the second heat exchanger to the power generation device; a distributor configured to supply the steam to at least one of the reformer and a heat utilization device; and a control device configure to adjust a heat-to-electric power ratio by changing a supply destination of the steam in the distributor.

Cogeneration system

According to one embodiment, a machine control system includes: a selecting unit which acquires a state quantity of a machine converted from data acquired by a sensor provided in the machine to select two or more learning models according to the acquired state quantity; a composing unit which inputs the state quantity acquired by the selecting unit to each of the two or more learning models selected by the selecting unit to calculate a composed value using a command value output from each of the learning models; and a learning unit which outputs a command value with respect to the machine in a range based on the composed value calculated by the composing unit, acquires a state quantity of the machine, searches for a command value of a specific condition from a combination of the output command value and the acquired state quantity, and outputs the searched command value to the machine, thereby creating a new learning model.

Machine control system

The control device includes: an observation unit that calculates an amount relating to a state of a control target detected by a sensor; an abnormality predictor detection unit that detects an abnormality predictor of the control target; a reward calculation unit that calculates a reward which is an amount obtained by evaluating pass or fail of an operation of the control target; a basic control amount calculation unit that calculates data relating to the state during an operation and a basic control amount serving as a reference to control the control target; a control amount search unit that searches for a control amount at which the reward satisfies a predetermined condition based on the basic control amount, the data relating to the state during the operation and the reward; and a control unit that generates a command value to the control target.

Control device, control method, and control program

A renewable energy storage system that stores renewable energy, includes: an electrical power generator that converts renewable energy into electrical power; an electrical storage device that stores the electrical power; a hydrogen production device that produces hydrogen using the electrical power from the electrical power generator and/or the electrical power stored in the electrical storage device; a hydrogenation device that adds the hydrogen produced by the hydrogen production device to the unsaturated hydrocarbon; a saturated hydrocarbon storage device that stores the saturated hydrocarbon produced by the addition of the hydrogen to the unsaturated hydrocarbon; an unsaturated hydrocarbon storage device that stores the unsaturated hydrocarbon; and an unsaturated hydrocarbon supply controller that controls the supply of unsaturated hydrocarbon stored in the unsaturated hydrocarbon storage device to the hydrogenation device.

Renewable energy storage system

An organic thin film solar cell comprises: positive and negative electrode layers; and an organic thin film layer disposed between the positive and negative electrode layers, the organic thin film layer including: a mixture of at least a first organic compound having a light-absorbing dye moiety and an electron-accepting second organic compound, in which the organic thin film layer further includes inorganic nanoparticles.

Organic thin film solar cell and fabrication method of same

An object of the present invention is to provide an enlarged dye sensitized solar cell which has a short-circuit preventing structure while a distance between a transparent conductive oxide and a counter electrode, that is, a cell gap is shortened. The dye sensitized solar cell includes a transparent conductive oxide which includes a transparent substrate and a conductive metal oxide having a light transmission property; a metal grid which is formed on the transparent conductive oxide; a protective film with which the metal grid is coated; a dye-adsorbed semiconductor thin film which is formed on the transparent conductive oxide in which the metal grid is not formed; and a counter electrode substrate, wherein a short-circuit preventing layer is provided in the counter electrode substrate facing the metal grid, and a width formed by a short side of the short-circuit preventing layer is larger than a width formed by the metal grid and protective layer.

Growing community of inventors

Tokyo, Japan

Hiroto Naito