Fujitsu Corporation

Fuji Electric Co., Ltd.

Junichi Ishimine

Masahiro Suzuki

Yuji Ohba

Tadashi Katsui

Ikuro Nagamatsu

Akira Ueda

Nobuyoshi Yamaoka

Yasushi Uraki

Seiichi Saito

Hisashi Kawashima

Yoshiaki Udagawa

Akihiko Fujisaki

Masahiro Mochizuki

Jie Wei

Keizo Takemura

Masahiro Miyo

Hideo Kubo

Atsushi Yamaguchi

Haruhiko Yamamoto

Hitoshi Nori

Masumi Suzuki

Akira Takahashi

Tsuyoshi So

Shunichi Kikuchi

Minoru Hirano

Kiyotaka Seyama

Atsushi Furuya

Masamichi Iwasaki

Tomoaki Haneda

Jie Wie

Sayoko Tominaga

Shin-ichirou Kouno

Akihiro Watanabe

Jun Takeda

Tomohiro Okazaki

Shinji Mizumura

An air conditioner sucks air exhausted from an information processor, and cools down the sucked air. The air conditioner exhausts the cooled air. The air conditioner acquires a cooling state, determines whether a cooling capacity exceeds an upper limit value, and reduces the volume of exhaust air when it is determined that the cooling capacity exceeds the upper limit value. For example, the air conditioner calculates a thermal load as the cooling state by using the volume of exhaust air, a difference between the temperature of exhaust air and the temperature of suction air, and determines that the cooling capacity exceeds the upper limit value when the calculated thermal load exceeds a given threshold. The air conditioner measures the temperature of exhaust air, and determines that the cooling capacity exceeds the upper limit value when the measured temperature exceeds a set value.

Air conditioning system

An air conditioning control apparatus for controlling an air conditioner in a room which accommodates a computer, includes obtaining repetitively a detected value of a total power consumption of the computer and the air conditioner and a detected value of a air temperature at the air inlet, storing the obtained values into a memory, determining an approximate expression representing a relation between the total power consumption and the air temperature on the basis of the values stored into the memory, determining a value of the air temperature corresponding to the lowest value of the total power consumption, by using the calculated approximate expression, and controlling the air conditioner so that the air temperature become equal the calculated air temperature.

Air conditioning control apparatus and air conditioning control method

An air volume control device determines whether or not a cooling capacity of an electronic device fulfills a predetermined cooling capacity. Then, if it is determined that the cooling capacity of the electronic device is failing to fulfill the predetermined cooling capacity, the air volume control device decreases the number of revolutions of a fan for cooling the electronic device. For example, the air volume control device compares a temperature of a heating element provided in the electronic device before a change in the number of revolutions of the fan with that after the change in the number of revolutions of the fan. If the temperature of the heating element is increased when the number of revolutions of the fan is increased, the air volume control device determines that the cooling capacity of the electronic device is failing to fulfill the predetermined cooling capacity.

Air volume control device and air volume control method

An installation for cooling an electronic device includes an air conditioner having an air outlet for blowing cooling air to a room; a first detector adjacent to the air outlet of the air conditioner, for detecting a temperature of the cooling air; a rack accommodating the electronic device, the rack having an air inlet for receiving the cooling air from the air conditioner and an air outlet for exhausting air to the room; a second detector adjacent to the air inlet of the rack, for detecting a temperature of air received through the air inlet of the rack; and a controller for acquiring the temperatures detected by the first and the second detectors, and controlling a quantity of the cooling air blown from the air outlet of the air conditioner so as to decrease a difference between the temperatures detected by the first and the second detectors.

Air conditioning installation and control method

An apparatus for controlling grille aperture ratios of a plurality of air transfer grilles which are installed in a room, includes a determining unit for determining target grille air volumes of air blowing to the racks, for determining simulation air volumes of air blowing from the air transfer grilles on the basis of the target grille air volumes so that each of air of the target grille air volumes are blown to the racks, and for determining grille aperture ratios for each of the air transfer grilles on the basis of the plurality of simulation air volumes so that each of the amounts of air blowing from the air transfer grilles is replaced by each of the simulation air volumes, and a controller for controlling each of the grille aperture ratios of the air transfer grilles on the basis of each of the determined grille aperture ratios.

Apparatus and method for controlling grille aperture ratios of a plurality of air transfer grilles

A thermal-fluid-simulation analyzing apparatus includes an execution unit that generates an analysis model using analysis conditions to conduct a first thermal fluid simulation analysis based on the generated analysis model, an analysis-condition collecting unit that collects analysis conditions when a predetermined period passes after the first thermal fluid simulation analysis, a condition extracting unit that extracts a boundary condition from the analysis conditions collected by the analysis-condition collecting unit, and a re-execution unit that selects a region corresponding to the boundary condition extracted by the condition extracting unit from regions of the analysis model generated by the execution unit, updates the selected region with the boundary condition, and conducts a second thermal fluid simulation analysis for the updated analysis model.

Thermal-fluid-simulation analyzing apparatus

There are included a location-information management unit that manages location information of devices arranged in a spatial layout on a screen, a device-feature management unit that manages device features of the devices, a guide-information generation unit that reads the location information and the device features of the devices arranged in the spatial layout from the location-information management unit and the device-feature management unit respectively and generates device-layout guide information allowing for the device features of the devices based on the read location information and device features of the devices, and a monitor unit that guides and displays the device-layout guide information generated by the guide-information generation unit.

Device-layout guiding apparatus and device-layout guiding method

A job assigning apparatus connected to a plurality of arithmetic units for assigning a job to each of the arithmetic units, the job assigning apparatus includes a power consumption acquiring processor for acquiring power consumptions with respect to each of the arithmetic units, a selector for selecting one of the arithmetic units as a submission destination in increasing order of the power consumptions acquired by the power consumption acquiring processor, and a job submitting processor for submitting a job to the submission destination.

Job assigning apparatus and job assignment method

An air condition control device for controlling a plurality of air conditioners which cool a plurality of electronic apparatuses respectively, the air condition control device includes a storage section for storing a heating value information related to respective heating values of the electronic apparatuses, and a controller for detecting that a fault has occurred in one of the air conditioners, specifying any of the electronic apparatuses which has been cooled by the one of the air conditioners having occurred the fault when the fault in the one of the air conditioners is detected, determining a heating value of each of the specified electronic apparatuses on the basis of the heating value information, and setting the air flow rate for at least one of the other air conditioners in accordance with the heating values of the specified electronic apparatuses.

Air condition control device and controlling method

A box-shaped enclosure of a storage box includes a deadening wall or walls defining a storage space between first and second planes. The storage space is open at the first and second planes. A deadening wall member extends along the first plane. An auxiliary box-shaped enclosure is connected to the box-shaped enclosure so as to close the first plane of the box-shaped enclosure. The auxiliary box-shaped enclosure defines an auxiliary space isolated from the storage space with a deadening wall member. The storage space is connected to the fresh air through the ventilation opening and the auxiliary space. The deadening wall or walls of the box-shaped enclosure and the deadening wall member serve to prevent the leakage of the operating sound.

Storage box for electronic apparatus

A temperature measurement system including a measurement plate placed on a measurement plane specified on at least one of an intake opening and an exhaust opening of a rack storing an information processing apparatus or at a position being away from the measurement plane by a predetermined distance; and an infrared camera configured to capture an image of the measurement plate, where the infrared camera is placed at a position with which the measurement plane is not captured and the measurement plate is captured by the infrared camera.

Temperature measurement system and temperature measurement method

A storage unit includes: a storage section containing an information processing apparatus; an intake section allowing intake of a cooling medium into the information processing apparatus for cooling the information processing apparatus; a discharge section receiving the cooling medium discharged from the information processing apparatus; a cooling medium flow generating section configured to control intake and discharge of the cooling medium; a partition section isolating the intake section and the discharge section from each other; an aperture formed in the partition section; a detector section configured to detect an inflow of the cooling medium, discharged from the discharge section, through the aperture; and a controller section configured to control the cooling medium flow generating section in accordance with a result of the detection of the detector section.

Storage unit and information processing apparatus and method of cooling

An electronic equipment has a heat-generating part therein. A housing accommodates component parts including the heat-generating part. A cooling-medium circulation system circulates a liquid internal cooling-medium between a heat-absorbing part and a heat-radiating part, the heat-absorbing part absorbing heat from the heat-generating part, the heat-radiating part radiating the heat absorbed by the heat-absorbing part. The heat-radiating part of the cooling-medium circulation system includes a first heat exchanger that performs heat exchange between a liquid external cooling-medium and the internal cooling-medium, the external cooling-medium being supplied from outside the electronic equipment, and a second heat exchanger that performs heat exchange between an air and said internal cooling-medium, the air being exhausted from the housing to outside.

Electronic equipment and rack apparatus

A package structure to be mounted on was external printed circuit board includes a package board that is mounted with an exoergic circuit element, and a heat sink that radiates heat from the exoergic circuit element, wherein first pressure for connecting the heat sink to the package board is separated from second pressure for compressing the package board against the printed circuit board.

Package structure, printed circuit board mounted with the same, electronic apparatus having the printed circuit board

A support member is designed to move in the longitudinal direction in a rack mount type disk array apparatus. A frame member is attached to the support member for relative rotation around the rotation axis located between the front and rear ends of the frame member in the longitudinal direction. Recording disk drives are held within the frame member in an upright attitude. The recording disk drives can be removed from and inserted into the frame member in a facilitated manner. This leads to a facilitated replacement of the recording disk drives. Moreover, the upper face of the frame member is allowed to face forward through the rotation around the rotation axis. Even if the disk array apparatus is placed at a higher level, the operator easily accesses the recording disk drives in the frame member.

Growing community of inventors

Kawasaki, Japan

Junichi Ishimine