Mitsubishi Heavy Industries Thermal Systems, Ltd.

Takaaki Miura

Minoru Matsuo

Kenji Ueda

Koki Tateishi

Satoshi Nikaido

Toshiaki Ouchi

Yoshie Kanki

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

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

Growing community of inventors

Tokyo, Japan

Takaaki Miura