Patent ID: 9157671
Filing Date: 2015-10-13
Classification: F25B,Y02B

Abstract:
1. A cooling system comprising: a refrigeration circuit constructed by connecting a plurality of load facilities in parallel through a refrigerant pipe to a rack system refrigerating machine defined as an assembly that comprises capacity-fixed type compressors for varying a cooling capacity of the rack system refrigerating machine, a condenser and a condenser fan, a number of the compressors constituting the rack system refrigerating machine being freely determinable at a user side when the rack system refrigerating machine is installed; a main control device configured to acquire control data for controlling the cooling capacity of the rack system refrigerating machine on the basis of a cooling state of the load facilities only after the rack system refrigerating machine is installed at the user side, learn the control data in accordance with variation of an operation environmental condition under which the rack system refrigerating machine is installed and operated so that an optimum cooling capacity is obtained under the environmental condition, and output the learned control data, the control data comprising control setting for defining a compressor control rule for determining a number of compressors to be operated in accordance with a cooling state of the load facilities, and a low-pressure side pressure set value as a target value of the cooling capacity of the rack system refrigerating machine which is variable in accordance with the operation environmental condition; and a compressor control device provided separately from the rack system refrigerating machine, and configured to receive the control data from the main control device only after the rack system refrigerating machine is installed at the user side, and control the number of compressor to be operated on the basis of the control data.