Abstract: An extruded wing tube section (10) according to the invention consists of a formed tube portion (12) comprising at least one first wing section (20) integrally formed thereon in a first radial plane of the tube portion (12). The first wing section (20) has a plurality of first radial cut-outs such that a plurality of first wings (22) is provided in the first wing portion (20). Each of the first wings (20) is rotated about a radial axis of rotation such that each of the first wings (22) is rotated out of the first radial plane by a first angle 0°<?1<?° A first continuous transition portion is provided between the tube region (12) and each of the first wings (22), which transition portion has a twisted portion in the portion of the axis of rotation, and at least one expansion portion adjacent thereto.

Abstract: A heat exchanger for cooling systems, air conditioning systems, or the like, which is equipped with a de-icing function. For de-icing, the conduits of the heat exchanger are heated and defrosted by an electrical current flow. The drainage of the condensed water is supported by openings in the wings of the wing tubes used.

Abstract: Heat exchanger 1 for removing heat from a medium with at least one serpentine-shaped wing tube 20 arranged in a housing, the linear wing section 30 of which is arranged such that the wing 24 of the wing section 30 encloses an angle in the range of 10°???30° with a flow direction S.

Abstract: A heat transfer tube (101) for a heat exchanger. The wall (120) of the heat transfer tube comprising at least one axially extending wing-shaped protrusion (104, 105) to provide the tube with additional heat transfer surface area. The wing shaped protrusion is formed by a process comprising at least one of: (i) folding the wall of the tube; and (ii) extrusion.

Abstract: A refrigerating circuit having a condenser and an evaporator, wherein shaped bodies (9, 9a) of a drying agent are arranged within a component (6), which carries liquid refrigerant of the circuit, and are so adapted to the internal geometric shape of the respective component as to filter residual moisture from throughflowing refrigerant.