Heat exchanger element made of an extruded bar of aluminium

摘要

The centre axis of the at least one pipe exposed to a heat exchanger medium extends in the longitudinal direction of the aluminium extruded section. At least one shell shaped contact piece (3) matches the outer radius of the pipe. At least one profiled piece (4,6,8) forming a radiation surface is moulded on its side facing the pipe (2). The outer longitudinal edges of the profiled parts run through the corners of a triangle. The facing longitudinal edge strips of the shell-shaped contact pieces form at least one expansion gap (9).