Reheating method for operating a refrigeration system for a motor vehicle, refrigeration system, and motor vehicle having a refrigeration system of this type

A refrigeration system for a motor vehicle, with

• a refrigerant compressor, which is connectable or connected to a primary line and a secondary line;
• an outer heat exchanger, which is arranged in the primary line;
• an evaporator, which is arranged in the primary line;
• a heating register, which is arranged in the secondary line;
• at least one movable temperature flap which is arranged upstream or downstream of the heating register in relation to a supply air flow direction;
• at least one shut-off element, which is arranged downstream of the heating register in the secondary line;
• wherein the refrigeration system is set up to be operated in an reheating mode
• wherein, in the reheating mode, the refrigerant, starting from the refrigerant compressor, flows through the following components of the refrigeration system in succession, while bypassing the external heat exchanger:
• heating register in the secondary line, evaporator in the primary line, and
• wherein the temperature of the supply air is measured after the supply air has flowed through the evaporator and wherein a nominal temperature for the temperature of the supply air after flowing through the evaporator is adjusted as a function of a dehumidification requirement or/and of the heating power or/and of the heating requirement.