Abstract: A water electrolysis system includes a high-pressure water electrolysis apparatus and a gas-liquid separation device. The gas-liquid separation device includes a block member which includes a gas-liquid separation opening and a water-level detection opening. The gas-liquid separation opening and the water-level detection opening extend substantially vertically and includes respective bottom portions which integrally communicate with a discharge pipe. The discharge pipe is disposed at a lower side portion of the block member. The water-level detection opening includes a top portion and a top water-level detection section. The block member further includes an inlet hole in which the hydrogen is introduced from the high-pressure water electrolysis device. The inlet hole is disposed at an upper side portion of the block member. The inlet hole is positioned above the top water-level detection section of the water-level detection opening.

Abstract: A water electrolysis system includes a high-pressure hydrogen production unit for electrolyzing water to generate oxygen and high-pressure hydrogen (the pressure of the high-pressure hydrogen being higher than that of the oxygen), and a gas-liquid separation unit for removing water contained in the high-pressure hydrogen. The gas-liquid separation unit is placed on a hydrogen pipe for discharging the high-pressure hydrogen from the high-pressure hydrogen production unit. In addition, the water electrolysis system includes a high-pressure hydrogen supply pipe for transferring dewatered high-pressure hydrogen from the gas-liquid separation unit, a cooling unit, which is placed on the high-pressure hydrogen supply pipe and is capable of variably controlling the temperature of the high-pressure hydrogen to adjust the humidity of the high-pressure hydrogen, and a control unit.

Abstract: A water electrolysis system includes a water electrolysis apparatus for electrically decomposing water to generate oxygen and high-pressure hydrogen having a pressure higher than the oxygen, a gas-liquid separator connected to a hydrogen pipe which discharges the high-pressure hydrogen from the water electrolysis apparatus, for separating water contained in the high-pressure hydrogen, a high-pressure hydrogen outlet pipe for delivering the high-pressure hydrogen separated from water from the gas-liquid separator, a water drainage line for discharging the water from the gas-liquid separator, and a gas depressurizing line connected to the gas-liquid separator, for degassing the gas-liquid separator before the water is discharged from the water drainage line into the water drainage line.

Abstract: A water electrolysis system includes a high-pressure water electrolysis apparatus and a gas-liquid separation device. The gas-liquid separation device includes a block member which includes a gas-liquid separation opening and a water-level detection opening. The gas-liquid separation opening and the water-level detection opening extend substantially vertically and includes respective bottom portions which integrally communicate with a discharge pipe. The discharge pipe is disposed at a lower side portion of the block member. The water-level detection opening includes a top portion and a top water-level detection section. The block member further includes an inlet hole in which the hydrogen is introduced from the high-pressure water electrolysis device. The inlet hole is disposed at an upper side portion of the block member. The inlet hole is positioned above the top water-level detection section of the water-level detection opening.

Abstract: A water electrolysis system includes a water electrolysis apparatus including an electrolyte membrane. The electrolyte membrane is provided between an anode and a cathode. The water electrolysis apparatus is configured to generate oxygen on a side of the anode and hydrogen on a side of the cathode at a pressure higher than a pressure of the oxygen through electrolysis of water. A gas-liquid separation apparatus separates unreacted water and produced gas discharged from a water outlet of the water electrolysis apparatus. A water circulation apparatus circulates the water between the water electrolysis apparatus and the gas-liquid separation apparatus. The water circulation apparatus includes a return pipe having an on-off valve and connecting the water outlet and the gas-liquid separation apparatus. A hydrogen exhaust pipe is connected to the return pipe between the water outlet and the on-off value and extends upward from the water electrolysis apparatus.

Abstract: A water electrolysis system has a water electrolysis apparatus for electrolyzing pure water, thereby producing hydrogen, a water storage apparatus for separating between oxygen and residual water discharged from the water electrolysis apparatus, thereby storing the water, a water circulation apparatus for circulating the water stored in the water storage apparatus through the water electrolysis apparatus, and a water supply apparatus for supplying the pure water prepared from city water to the water storage apparatus. An inlet is formed at one end of a return pipe to introduce the oxygen and the residual water discharged from the water electrolysis apparatus into a tank, and the position of the inlet is determined such that the inlet is constantly opened in the water stored in the tank.

Abstract: Fuel supply station information distributing system includes at least one vehicle, an information distributing server and at least one station, which are interconnected through communication line networks. The information distributing server transmits at every given time a request-to-send for vehicle information to the vehicles as well as a request-to-send for station information to the stations. The information distributing server then creates a fuel supply station information associating for each vehicle based on the vehicle information received from the vehicle and the station information received from the stations, and distributes it to the vehicle. When the vehicle receives the fuel supply station information from the information distributing server, it is displayed on the car navigation screen for notifying the driver.

Abstract: Fuel supply station information distributing system includes at least one vehicle, an information distributing server and at least one station, which are interconnected through communication line networks. The information distributing server transmits at every given time a request-to-send for vehicle information to the vehicles as well as a request-to-send for station information to the stations. The information distributing server then creates a fuel supply station information associating for each vehicle based on the vehicle information received from the vehicle and the station information received from the stations, and distributes it to the vehicle. When the vehicle receives the fuel supply station information from the information distributing server, it is displayed on the car navigation screen for notifying the driver.

Abstract: A system for allocating fuel stations to movable bodies includes an onboard unit, a station unit and a server. The onboard unit stores and updates information about a movable body. The station unit disposed at a fuel station which supplies fuel to the movable body stores and updates information about the fuel station. The server, which is connected to the onboard unit and the station unit through networks, allocates certain fuel stations to the movable body which requires fueling, based on the information about the movable body and the fuel station. When a difference of distance resulting from a subtraction, a movable distance minus a station distance, is smaller than a certain threshold, the server determines a necessity of supplying fuel to the movable body, allocating a fuel station which keeps an amount of stored fuel necessary for fuelling the movable body.

Abstract: A system for allocating fuel stations to movable bodies includes an onboard unit, a station unit and a server. The onboard unit stores and updates information about a movable body. The station unit disposed at a fuel station which supplies fuel to the movable body stores and updates information about the fuel station. The server, which is connected to the onboard unit and the station unit through networks, allocates certain fuel stations to the movable body which requires fueling, based on the information about the movable body and the fuel station. When a difference of distance resulting from a subtraction, a movable distance minus a station distance, is smaller than a certain threshold, the server determines a necessity of supplying fuel to the movable body, allocating a fuel station which keeps an amount of stored fuel necessary for fuelling the movable body.

Abstract: In a water electrolyzing system of a solar-power-generating type, a low power generated by a photovoltaic generator and not reaching a level required for the operation of a water electrolyzer is utilized effectively. A water electrolyzing system includes a water electrolyzer, a first photovoltaic generator which is a power source of the water electrolyzer, and at least one electric device, for example, an accumulating device and a heater for raising the temperature of water to be electrolyzed. When a power generated by the first photovoltaic generator is lower than a level required for the operation of the water electrolyzer, if the temperature of the water to be electrolyzed is lower than 80°, the generated power is supplied to the temperature-raising heater, or if T≧80°, the generated power is supplied to the accumulating device and accumulated therein.