REFRIGERANT CIRCUIT FOR A VEHICLE, AND METHOD FOR CONTROLLING SUCH A CIRCUIT

Thermal regulation circuit for a vehicle, said circuit comprising first () and second () heat exchangers that are situated in series along a direction of circulation of an air flow intended to pass through them in this order, said circuit comprising a third heat exchanger () intended to be passed through by an ambient air flow, said circuit being configured to allow a refrigerant to circulate in series in the first () and third () heat exchangers and a heat-transfer fluid to circulate in the second heat exchanger ().