A tube for use in a heat exchanger includes an upper portion, a base portion spaced from the upper portion, and a partitioning wall depending from the upper portion. The partitioning wall is bent away and spaced from the base portion in a first section of the tube to form a single flow channel within the tube along the first section. The partitioning wall contacts the base portion in a second section of the tube to form a partition separating a first flow channel from a second flow channel along the second section. The first section of the tube is configured for reception into an opening of a header tank of the heat exchanger.

A tube for use in a heat exchanger includes an upper portion, a base portion spaced from the upper portion, and a partitioning wall depending from the upper portion. The partitioning wall is bent away and spaced from the base portion in a first section of the tube to form a single flow channel within the tube along the first section. The partitioning wall contacts the base portion in a second section of the tube to form a partition separating a first flow channel from a second flow channel along the second section. The first section of the tube is configured for reception into an opening of a header tank of the heat exchanger.

A heat exchanger (4) has fluid flow channels (6) with at least one heat exchanging surface (10) which has an undulating surface section for which the surface profile varies along a predetermined direction such that at a first edge (E1) the surface profile follows a first transverse wave (20), at a second edge (E)2 the surface profile follows a second transverse wave (22) and at an intermediate point I between the edges the surface profile follows a third transverse wave (24). The third transverse wave (24) has a different phase, frequency or amplitude to the first and second transverse waves so that chevron-shaped ridges and valleys are formed. This improves the mixing of fluid passing through the channel and hence the heat exchange efficiency.

A heat exchanger (4) has fluid flow channels (6) with at least one heat exchanging surface (10) which has an undulating surface section for which the surface profile varies along a predetermined direction such that at a first edge (E1) the surface profile follows a first transverse wave (20), at a second edge (E)2 the surface profile follows a second transverse wave (22) and at an intermediate point I between the edges the surface profile follows a third transverse wave (24). The third transverse wave (24) has a different phase, frequency or amplitude to the first and second transverse waves so that chevron-shaped ridges and valleys are formed. This improves the mixing of fluid passing through the channel and hence the heat exchange efficiency.

A sinusoidal corrugated tube-type spiral wounded heat exchanger suitable for FLNG, wherein a top of an outer cylinder has a shell-side refrigerant inlet and a bottom thereof has a shell-side refrigerant outlet; a sinusoidal corrugated tube-type liquid distributor is below the shell-side refrigerant inlet, a first sinusoidal corrugated winding tube bundle and a second sinusoidal corrugated winding tube bundle, which are heat exchanger tubes with a sinusoidal wave shape, are inside the outer cylinder, and peaks and troughs of the first sinusoidal corrugated winding tube bundle and the second sinusoidal corrugated winding tube bundle are in staggered correspondence one by one from top to bottom; a sinusoidal corrugated tube-type liquid distributor includes a one-into-two-type tube, a two-into-four-type tube, two sinusoidal corrugated tube-type liquid distribution tubes from top to bottom.

There is provided a heat exchanger system comprising a housing defining a heat exchange compartment in which are extending a plurality of circular flexible pipes including radially extending fins, the fins defining a helical pattern along the length of each of the circular flexible pipes. There is also provided a circular flexible pipe having radially extending fins, the fins defining a helical pattern along the length of the circular flexible pipe. There is further provided a method and an apparatus for manufacturing a circular flexible pipe having radially extending fins, the fins defining a helical pattern along the length of the circular flexible pipe.

There is provided a heat exchanger system comprising a housing defining a heat exchange compartment in which are extending a plurality of circular flexible pipes including radially extending fins, the fins defining a helical pattern along the length of each of the circular flexible pipes. There is also provided a circular flexible pipe having radially extending fins, the fins defining a helical pattern along the length of the circular flexible pipe. There is further provided a method and an apparatus for manufacturing a circular flexible pipe having radially extending fins, the fins defining a helical pattern along the length of the circular flexible pipe.

The present invention relates to a heat exchanger (1) comprising at least, one fluid F passage tube (7) and at least one manifold (5) provided with a cover (11) closing, after assembly, a longitudinal opening (10) of a collector plate (9) cooperating with said cover (11) to form the manifold, said tube (7) being designed to form a connecting element for the exchanger and comprising an end partially crimped between said cover (11) and said collector plate (9) at a passage orifice (17) for said fluid F in the manifold.

The present invention relates to a heat exchanger (1) comprising at least, one fluid F passage tube (7) and at least one manifold (5) provided with a cover (11) closing, after assembly, a longitudinal opening (10) of a collector plate (9) cooperating with said cover (11) to form the manifold, said tube (7) being designed to form a connecting element for the exchanger and comprising an end partially crimped between said cover (11) and said collector plate (9) at a passage orifice (17) for said fluid F in the manifold.

A heat exchanger includes a heat exchanger core. The heat exchanger core includes a first fin and a second fin. The second fin is spaced apart from the first fin. The heat exchanger core also includes a primary passage defined between the first fin and the second fin and extending through the heat exchanger core. The heat exchanger core also includes a plurality of airfoils extending through the first fin, the primary passage, and the second fin. At least one airfoil of the plurality of airfoils includes a secondary passage. The secondary passage extends through the heat exchanger core within the at least one airfoil transverse to the primary passage.