THERMAL CONDITIONING SYSTEM FOR A MOTOR VEHICLE

A thermal conditioning system for a motor vehicle, including a refrigerant circuit including a main loop including in succession: a compression device; a first heat exchanger; a first expansion device; a second heat exchanger; a third heat exchanger; a refrigerant accumulation device. An inner volume of a portion of main loop extending from an outlet of the first heat exchanger to an inlet of the first expansion device defines a first reference volume. An inner volume of the accumulation device defines a second reference volume. The ratio of the first reference volume and the second reference volume is greater than 0.2.