Mitsubishi Heavy Industries Thermal Systems, Ltd.

Noriyasu Maehara

Minoru Matsuo

Satoshi Nikaido

Toshiaki Ouchi

Yusuke Hazui

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.

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Tokyo, Japan

Noriyasu Maehara