Cooling device for an object and method for operating a cooling device for an object

A cooling device for an object, the cooling device comprising:

• a refrigerant circuit for a refrigerant, said refrigerant circuit having a compressor, a condenser, an expansion element and an evaporator, a cold air flow for the object exchanging heat with said refrigerant in said evaporator;
• a first controller for controlling an operation of said refrigerant circuit;
• a defroster for de-icing said evaporator;
• a second controller for controlling said defroster, said second controller configured to control said defroster according to a degree of icing of said evaporator;
• a cold air temperature sensor for measuring a temperature of the cold air flow from the object to said evaporator;
• a temperature sensor and/or an operating pressure sensor for measuring a temperature and/or an operating pressure of said refrigerant upstream of said evaporator;
• and
• wherein said second controller is configured to receive at least one operating parameter of said compressor and to determine the degree of icing of said evaporator on a basis of the temperature of the cold air flow from the object to said evaporator, the temperature and/or the operating pressure of said refrigerant upstream of said evaporator and the at least one operating parameter of said compressor.