| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem of a low-temperature showcase occurring in a case of reducing electric power consumption in an electric power peak time zone.SOLUTION: A low-temperature showcase includes: an internal temperature sensor 41 for detecting a temperature in an exhibition room of the low-temperature showcase; and a control device 46 for controlling the operation frequency of a compressor 22 so that the temperature in the exhibition room is set to a setting temperature, on the basis of output of the internal temperature sensor. In a predetermined electric power peak time zone, the control device executes low-speed operation control that operates the compressor 22 at a predetermined low operation frequency, regardless of the temperature in the exhibition room. |
