Heat exchanger e.g. heating unit, for air conditioning system of motor vehicle, has cooling medium cases flow connected by flat pipes, where pipes differ from each other according to pressure drop

摘要

The exchanger e.g. heating unit (1), has two cooling medium cases (10, 12) flow connected by number of flat pipes (14), where pipe intermediate gaps (16) for the air flow is formed between the flat pipes. The flat pipes differ from each other according to the pressure drop, which is adjusted between an inlet opening and an outlet opening of the flat pipes during the flow of a cooling medium with accepted identical pressure in a region of the respective inlet openings of the flat pipes.