An air-conditioning system for a motor vehicle contains a heat exchanger with
a heat-exchanger tube that features a profiled central channel and outer channels
grouped around the central channel. This heat-exchanger tube is suitable for the
construction of counterflow heat exchangers. For this purpose, the heat-exchanger
tube is to be cut to corresponding lengths and provided with corresponding end
pieces. Such heat exchangers have proven to be light, pressure resistant, and effective.
