Operating coolant circuit, especially for motor vehicle air conditioning system, involves approximately completely liquefying coolant in coolant circuit before choke arrangement

摘要

The method involves approximately completely liquefying the coolant in the coolant circuit before a choke arrangement. The coolant circuit is operated in a sub-critical operating region and the pressure before and after the choke arrangement, the temperature before the choke arrangement and the cross-sectional area of the choke arrangement are detected.