Patent ID: 8209058

Claim:
A controller for a cooling system comprising a low-temperature showcase having a storage room and a refrigerating machine for supplying refrigerant to the low-temperature showcase, comprising: a control data generating unit for generating control data for controlling an operation of the refrigerating machine under an operation environmental condition for defining an operation environment of the cooling system; and a data base constructing unit for registering an optimum value of the control data based on a determination result concerning a cooling state of the storage room of the low-temperature showcase which occurs through the operation based on the control data while associating the optimum value with the operation environmental condition, thereby constructing a data base, wherein when an optimum value of the control data corresponding to an operation environmental condition to be generated is registered in the data base, the control data generating unit uses the optimum value of the control data, and when an optimum value of the control data corresponding to an operation environmental condition to be generated is not registered in the data base, the control data generating unit uses an optimum value of the control data registered in association with an operation environmental condition adjacent to the operation environmental condition to be generated, wherein the operation environmental condition adjacent to the operation environmental condition to be generated is an operation environmental condition that is stored in the database and that differs from the operation environmental condition to be generated by a predetermined discrete amount.