Integrated demand control method and integrated demand control device

An integrated demand control method for showcases equipped with refrigeration facilities disposed in areas, the method comprising:

• receiving temperature of each of the showcases;
• receiving control cancellation signal of each of the areas;
• storing, as cancellation temperature, the received temperature of each of the showcases each time when the demand control cancellation signal is received;
• determining reference cancellation temperature of each of the showcases according to distribution of the stored cancellation temperatures of each of the showcases;
• setting higher demand control priority to each of the areas having smaller demand control allowable index, the demand control allowable index being difference between the temperature of each of the showcases at a predetermined time point and the reference cancellation temperature of each of the showcases.

An integrated demand control device for air conditioners disposed in areas, the device comprising:

• one or more memories;
• and circuitry operative to:
• receive temperature of each of the areas;
• receive control cancellation signal of each of the areas;
• store as cancellation temperature, the received temperature of each of the areas each time when the demand control cancellation signal is received;
• determine reference cancellation temperature of each of the areas according to distribution of the stored cancellation temperatures of each of the areas;
• set higher demand control priority to each of the areas having smaller demand control allowable index, the demand control allowable index being difference between the temperature of each of the areas at a predetermined time point and the reference cancellation temperature of each of the areas.