Ricoh Company, Ltd.

Mitsubishi Heavy Industries Thermal Systems, Ltd.

Mitsubishi Heavy Industries Limited

Nabco Limited

Minoru Matsuo

Yuichi Jibiki

Satoshi Nikaido

Toshiaki Ouchi

Koki Tateishi

Kenji Ueda

Toshio Kobayashi

Takashi Sonoda

Norihiko Aze

Kohji Kamiya

Kyoichi Ashikawa

Nozomu Takahata

Akiko Tanaka

Hideki Komatsu

Toshihiko Niinomi

Takayuki Yoshii

Yoshie Togano

Hitoi Ono

Takeshi Fuchimoto

Kenji Takao

Minoru Taguchi

Makoto Kishi

Takahide Ito

Takaaki Miura

Yuji Natori

Yusuke Hazui

Seiichi Okuda

Shigeharu Nakamura

Yoshiyuki Kita

Katutoshi Endo

Atsuyoshi Saimen

Tatsuru Nagai

Hiroshi Katabami

Masaharu Nitta

Shigenobu Fukui

Yoshie Kanki

Yuuji Natori

Takehiko Itou

Noriyasu Maehara

Atsushi Enya

Kazuma Taito

Masahide Sugihara

Takayoshi Maeda

Yasunaga Kobayashi

Koji Edo

An information processing method includes acquiring information on a first route being a travel route of a first mobile body during a first time period and information on a second route being a travel route of a second mobile body during a second time period after the first time period, and setting a route for standby position as a travel route of the first mobile body during a third time period after the first time period and before the second time period when a target position of the first route is located on the second route. The route for standby position is a route from the target position to a standby position. The standby position is a position not overlapping with the second route.

Information processing method, information processing device, and program

Provided is a refrigerator system with which refrigerators can be operated efficiently. This refrigerator system has: an upstream refrigerator having a first compressor that compresses a refrigerant, a first condenser that condenses the refrigerant compressed by the first compressor, and a first evaporator that evaporates the refrigerant condensed by the first condenser and cools cold water; a downstream refrigerator having a second compressor that compresses a refrigerant, a second condenser that condenses the refrigerant compressed by the second compressor, and a second evaporator that evaporates the refrigerant condensed by the second condenser and cools the cold water that has passed through the first evaporator; and a higher-level control device that controls the operation of the upstream refrigerator and the downstream refrigerator. The first compressor is a variable-speed device, and the second compressor is a constant-speed device.

Refrigerator system

The purpose of the present invention is to maintain a water supply temperature close to a target water supply temperature at the time of a change in the number of heat source machines operating. A heat source system of the present invention anticipates a case where a prescribed minimum flow rate is set for heat source machines that are subject to addition or removal, and calculates, as compensation temperatures, hot and cold water outlet temperatures of the heat source machines so that the water supply temperature in such a case will match a target water supply temperature, and changes the hot and cold water outlet temperature settings of the operating heat source machines to the compensation temperatures. After that, the heat source machines that are subject to addition or removal are either started up or stopped, and the set flow rate for the heat source machines that are subject to addition or removal is set to the minimum flow rate.

Heat source system and control method therefor

A heat source system that optimizes a load on compressors in multiple heat source machines with respective independent refrigeration cycles that are situated in series. This is accomplished by using an information acquisition unit that acquires measurement values of operation frequencies of compressors from the respective heat source machines, a load distribution change unit that changes a load distribution currently assigned to each of the heat source machines, and a temperature setting unit that sets the hot/chilled water outlet temperatures of respective heat source machines.

Heat source system and control method thereof

A controller for controlling a number of operating heat sources is provided. The controller detects a change in a number of secondary pumps that supply a heat transfer medium to a load device, determines the number of operating heat sources that changes as a load demand of the state of a load device changes, and switches the number of operating heat sources. The controller determines the number of operating heat sources when the change in the number of secondary pumps due to the change in the load demand is detected, and changes the number of heat sources for as long as at least one of a prescribed period has passed from a time when the change in the number of secondary pumps is detected or a prescribed condition with respect to a value that varies due to the change in the number of secondary pumps is satisfied.

Device for controlling number of operating heat source devices, heat source system, control method, and program

A machine quantity controlling device which controls a quantity of a heat source device to operate in a heat source system including a first heat source device and a second heat source device, the first heat source device being a waste heat recovery type absorption chiller, the second heat source device other than a waste heat recovery type absorption chiller, the machine quantity controlling device including an acquisition unit that obtains a waste heat utilization maximum load which is a maximum load when the first heat source device receives only supply of the waste heat; a determination unit that determines a predetermined load range from the waste heat utilization maximum load to be a first optimal load range as an optimal load range of the first heat source device; and a machine quantity control unit that controls a quantity of the second heat source device to operate so that the sum of a total of minimum values of the optimal load range of the first heat source device to operate and a total of minimum values of a second optimal load range of the second heat source device to operate is smaller than or equal to a load required for the heat source system, and the sum of a total of maximum values of a first optimal load range and a total of maximum values of the second optimal load range is equal to or greater than the load required for the heat source system, the second optimal load range being an optimal load range of the second heat source device to operate.

Machine quantity controlling device, energy supplying system, machine quantity controlling method, and program

Provided is a heat pump system that can appropriately manage the number of heat pumps in operation even when any of the heat pumps is defrosting, and that can always operate at a capacity that corresponds to a load. Also provided is an operation method for the heat pump system. A heat pump system () wherein a plurality of heat pumps (A-C (A-D)) are connected to a system load and wherein a system management unit () successively calculates the capacity that can be output by the heat pumps (A-C (A-D)) in operation, compares the calculated capacity value, as a threshold value, to the thermal load of the system load, and manages the number of heat pumps (A-C (A-D)) in operation.

Heat pump system and operation method therefor

The purpose of the present invention is to avoid frequent repetition of an increase/decrease stage caused by the inclusion, in a heat source system, of a machine the capacity of which has been degraded. A heat source system of the present invention is provided with a plurality of heat source machines. A higher-level control device () controls each of the heat source machines so that a heat medium delivery temperature, which is the temperature of a heat medium being supplied to an external load, will be a set temperature. The higher-level control device () is provided with a number-of-machines control unit (), a degraded machine detection unit (), and a priority ranking modification unit (). The number-of-machines control unit () controls the number of heat source machines in accordance with operational priority ranking information in which each of the heat source machines and an operational priority ranking are associated together. The degraded machine detection unit () detects, as a capacity-degraded machine, a heat source machine that satisfies a predetermined capacity degradation condition, from among operating heat source machines. The priority ranking modification unit (), if a capacity-degraded machine has been detected, modifies to a lowest position the operational priority ranking of the capacity-degraded machine in the operational priority ranking information.

Heat source system, and control device and control method therefor

This chiller control device () is provided with: a storage unit () which stores operation data detected at each site in a turbo chiller; a compression unit () which, when the size of the operation data accumulated over time in the storage unit () becomes too large, converts the operation data each time a condition depending on the type of operation data is met, thereby compressing the data size; and a diagnostic unit () which evaluates the state of the turbo chiller on the basis of the operation data converted by the compression unit (). By this means, the state of the chiller can be diagnosed without increasing the storage capacity of the storage medium that stores operation data of the turbo chiller.

Chiller control device, chiller, and chiller diagnostic method

In order to achieve a reduction in energy consumption in a cooling water supply device without using a database, an equipment control device () of a cooling water supply device: uses the load of a chiller, and a cooling water outlet temperature lower limit setpoint determined in accordance with the set temperature for the cooling water outlet of the chiller, to set a cooling water inlet temperature lower limit setpoint; sets, as the cooling water inlet temperature setpoint, the higher of the lower limit setpoint and the cooling water inlet temperature lower limit value as determined from the outside wet-bulb temperature; and generates a control command for a cooling tower fan and a control command for the cooling water flow volume, so as to match the cooling water inlet temperature and the cooling water outlet temperature respectively with the cooling water inlet temperature setpoint and the cooling water outlet temperature lower limit setpoint which have been set.

Heat source system, and device and method for controlling cooling water supply device

To swiftly start, at the time of power recovery after a power failure, heat source machines, the number of which is equal to the number of machines before the power failure, without including an uninterruptible power supply in an apparatus for controlling the number of machines that is adapted to control the number of heat source machines. There is provided a heat source system, in which a host control device () includes a nonvolatile first storage unit () that stores the number of heat source machines in operation immediately before the power failure. When power is recovered, control on the number of heat source machines at the time of power recovery is performed in accordance with the number of heat source machines stored in the first storage unit ().

Heat source system and method for controlling number of machines to be started at time of power recovery in heat source system

To achieve energy saving in the cooling towers as a whole in a heat source system including a plurality of cooling towers connected in parallel to a common chiller. In a heat source system, a plurality of cooling towers are connected in parallel to a common chiller. The cooling towers cool cooling water used and thereby heated in the chiller, and supplies the cooled cooling water to the chiller. A cooling tower control device for controlling the cooling towers starts all the cooling towers at the start of the heat source system.

Device and method of controlling cooling towers, and heat source system

A control device and method for preventing the start and stop of heat source machines from being frequently repeated. The control device determining whether or not basic conditions for decreasing the number of machines are satisfied when the number of currently operating machines is increased by one is determined if a current operational status satisfies basic conditions for increasing the number of machines, and one heat source machine is started if it is determined that the basic conditions for decreasing the number of machines are not satisfied, and determining whether or not the basic conditions for increasing the number of machines are satisfied when the number of currently operating machines is decreased by one are satisfied if a current operational status satisfies the basic conditions for decreasing the number of machines, and one heat source machine is stopped if it is determined that the basic conditions for increasing the number of machines are not satisfied.

Number-of-machines control device for heat source system, method therefor, and heat source system

A required-circulated-refrigerant flow-rate calculating portion provided in a chilled-water flow-rate estimation calculation portion calculates an evaporator exchanged heat quantity exchanged between a refrigerant and chilled water at an evaporator based on a planned chilled-water-flow-rate value and a measured value of the temperature of the chilled water flowing in the evaporator, and calculates an evaporator-refrigerant flow rate based on that evaporator exchanged heat quantity. Then, a circulated-chilled-water flow-rate back-calculating portion back-calculates an evaporator-refrigerant flow rate based on the calculated evaporator-refrigerant flow rate and a ratio between a set value of differential pressure between a condenser and the evaporator and a measured value of that differential pressure, back-calculates an evaporator exchanged heat quantity exchanged between the refrigerant and the chilled water at the evaporator from the back-calculated evaporator-refrigerant flow rate, and back-calculates the flow rate of the chilled water.

Estimation apparatus of heat transfer medium flow rate, heat source machine, and estimation method of heat transfer medium flow rate

A hot-water heat pump that is capable of reducing installation costs and installation space and also reducing the heating time of a hot-water route, and a method of controlling the same are provided. The hot-water heat pump () is provided with a hot-water-heat-pump main unit () that includes a thermal output heat exchanger that absorbs heat from a heat-source route and outputs heat; hot-water route (and) that receive heat outputted from the thermal output heat exchanger; a three-way valve () provided in the outlet-side hot-water route (); and a controller that controls the hot-water-heat-pump main unit () and the three-way valve (), wherein the controller controls the size of openings of the three-way valve () so that a portion of the outlet-side hot-water route () leading out of the thermal output heat exchanger is guided to an upstream side of the thermal output heat exchanger.

Hot-water heat pump and method of controlling the same

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Tokyo, Japan

Minoru Matsuo