Flat tube for low temperature radiator used in car for indirect refrigeration of e.g. accumulator, has channels dimensioned such that hydraulic diameter ranges between specific values, where diameter amounts to quadruple of quotient

摘要

The tube (1) has channels (2) arranged adjacent to each other, where liquid to be cooled flows through the channels. The channels are dimensioned such that a hydraulic diameter ranges from 0.68 mm to 0.97 mm. The hydraulic diameter amounts to a quadruple of a quotient from a cross section area and an inner periphery of each channel. A width (B) of each channel ranges from 0.47 mm to 0.66 mm. A depth (T) of the tube ranges from 14 mm to 18 mm. An outer wall thickness (W) of each channel ranges from 0.2 mm to 0.3 mm.