Abstract: A community system includes an ammonia-hydrogen converter that is arranged in an industrial area and that converts ammonia to hydrogen.

Abstract: A community system includes an ammonia-hydrogen converter that is arranged in an industrial area and that converts ammonia to hydrogen.

Abstract: The community system includes a hydrogen source, a hydrogen storage, an FC power generating facility, a hydrogen filler, a house group that uses electric power supplied from the FC power generating facility and hydrogen supplied from at least one of the hydrogen source and the hydrogen storage, and a management system that manages hydrogen in the community system. The hydrogen source is a hydrogen producing device that produces hydrogen using waste heat generated in a commercial and industrial installation or produces hydrogen from by-product gas produced in the commercial and industrial installation.

Abstract: The community system includes a hydrogen source, a hydrogen storage, an FC power generating facility, a house group that uses hydrogen supplied from at least one of the hydrogen source and the hydrogen storage, and a management system that manages hydrogen in the community system. The management system manages hydrogen possession allocated to each house in the house group.

Abstract: A hydrogen supply and demand matching system comprises a plurality of hydrogen utilizing districts each including a hydrogen utilizing facility, and a management system configured to manage an amount of hydrogen in each of the plurality of hydrogen utilizing districts. The management system (a) estimates a state of supply and demand of hydrogen in each of the plurality of hydrogen utilizing districts, and (b) proposes exchange of hydrogen among the plurality of hydrogen utilizing districts in accordance with the state of supply and demand in each of the plurality of hydrogen utilizing districts.

Abstract: An FCV (fuel cell vehicle) dispatch system comprises a FCV management institution including an FCV management device configured to manage a plurality of FCVs, and a dispatch management system configured to manage dispatch of the plurality of FCVs. The dispatch management system (a) receives available FCV information about at least one FCV that is available for dispatch, from the FCV management device, (b) receives power shortage information indicating occurrence of a power shortage, from a power shortage area where the power shortage has occurred, (c) selects at least one FCV suitable for resolving the power shortage in the power shortage area, based on the available FCV information and the power shortage information, and (d) sends a dispatch request for dispatching the at least one selected FCV to the power shortage area, to the plurality of FCV management device.

Abstract: The community system includes a hydrogen source, a hydrogen storage, an FC power generating facility, a house group that uses electric power supplied from the FC power generating facility and hydrogen supplied from at least one of the hydrogen source and the hydrogen storage, and a management system that manages hydrogen in the community system. Each house in the house group is provided with a cooking-related appliance that uses hydrogen.

Abstract: A community system comprises a hydrogen source, a hydrogen storage, an FC power generating facility, a hydrogen filler, a house group that uses electric power supplied from the FC power generating facility and hydrogen supplied from at least one of the hydrogen source and the hydrogen storage, and a management system that manages hydrogen in the community system.

Abstract: The community system includes a hydrogen source, a hydrogen storage, an FC power generating facility, a house group that uses hydrogen supplied from at least one of the hydrogen source and the hydrogen storage, and a management system that manages hydrogen in the community system. The management system manages hydrogen possession allocated to each house in the house group.

Abstract: The community system includes a hydrogen source, a hydrogen storage, an FC power generating facility, and multiple house groups that use hydrogen supplied from at least one of the hydrogen source and the hydrogen storage. The FC power generating facility is located at a position facing all the multiple house groups, or a position facing all the multiple existing house groups and a planned site where a new house group is to be built.

Abstract: The community system includes a hydrogen source, a hydrogen storage, an FC power generating facility, a hydrogen filler, a house group that uses electric power supplied from the FC power generating facility and hydrogen supplied from at least one of the hydrogen source and the hydrogen storage, and a management system that manages hydrogen in the community system. The hydrogen source is a hydrogen producing device that produces hydrogen using waste heat generated in a commercial and industrial installation or produces hydrogen from by-product gas produced in the commercial and industrial installation.

Abstract: A community system includes an ammonia-hydrogen converter that is arranged in an industrial area and that converts ammonia to hydrogen.

Abstract: A trailer rental system comprises a trailer station provided with a trailer mounted with a hydrogen tank and a management apparatus configured to manage the trailer, the management apparatus performing rental operation of the trailer in response to a trailer rental request being received from outside.

Abstract: A fuel cell system includes a hydrogen path for supplying odorant-added hydrogen to the fuel cell, an estimating unit to estimate the depositing of the odorant in the fuel cell, and control unit to heat the fuel cell up to a temperature at which at least part of the odorant deposited in the fuel cell evaporates when the depositing of the odorant is estimated.

Abstract: Disclosed is a hydrogen supply apparatus which can mix an odorant with hydrogen gas even at a low temperature and can detect the leakage of the hydrogen gas. The apparatus comprises a gas storage means for storing hydrogen gas therein, an odorant-addition means for adding an odorant to the hydrogen gas fed from the gas storage means, and a temperature control means for controlling the temperature of at least one of the hydrogen gas stored in the gas storage means, the hydrogen gas fed from the gas storage means and the odorant.

Abstract: A magnetic disk control device according to an exemplary of the invention includes a write controller to control, in a magnetic disk having tracks, the track being a storage area made by concentrically dividing a magnetic recording layer formed onto a disk into a plurality of areas, the track being divided into a plurality of areas in a rotative direction as sectors, writing information into the each sector; and a substitution controller to make, by detecting the sector or the track written at a frequency higher than a writing frequency based on a number of times of writing by the write controller to the sector or the track and by moving information recorded in an adjacent track adjacent to a high-writing-frequency track including the detected high writing frequency sector or to a high-writing-frequency track which is detected as a high writing frequency track to a track of a substitution area.

Abstract: A hydrogen storage device capable of storing hydrogen for a long period of time is provided. The hydrogen storage device of the invention is provided with a thermally insulated container having an inner space, a liquid hydrogen inflow opening, and a hydrogen gas outflow opening, and a hydrogen adsorbing member filled in the inner space.

Abstract: A magnetic disk control device according to an exemplary of the invention includes a write controller to control, in a magnetic disk having tracks, the track being a storage area made by concentrically dividing a magnetic recording layer formed onto a disk into a plurality of areas, the track being divided into a plurality of areas in a rotative direction as sectors, writing information into the each sector; and a substitution controller to make, by detecting the sector or the track written at a frequency higher than a writing frequency based on a number of times of writing by the write controller to the sector or the track and by moving information recorded in an adjacent track adjacent to a high-writing-frequency track including the detected high writing frequency sector or to a high-writing-frequency track which is detected as a high writing frequency track to a track of a substitution area.

Abstract: To provide an array management device that changes criterion for judging whether to execute re-redundancy in accordance with configuration type of communication path. An array management device that executes redundancy on storage devices, and controls access to each storage device includes: a judgment unit judging whether access to each storage device has succeeded or failed; a holding unit holding therein configuration type of communication path to each storage device; a derivation unit, for each storage device, deriving a waiting period in accordance with the configuration type, the waiting period being from failure of access to the storage device to start of redundancy; and a redundancy processing unit, when access to a given storage device is judged to have failed, and then access to the given storage device is not judged to have succeeded within the waiting period, executing redundancy on the storage devices other than the given storage device.

Abstract: Disclosed is a hydrogen supply apparatus which can mix an odorant with hydrogen gas even at a low temperature and can detect the leakage of the hydrogen gas. The apparatus comprises a gas storage means for storing hydrogen gas therein, an odorant-addition means for adding an odorant to the hydrogen gas fed from the gas storage means, and a temperature control means for controlling the temperature of at least one of the hydrogen gas stored in the gas storage means, the hydrogen gas fed from the gas storage means and the odorant.