Abstract: A heat exchanger comprising at least one pipe (1) and at least one lamina (2), for exchanging heat between a first coolant that flows through the pipe (1) and a second coolant that wets the heat exchanger under the influence of centrifugal forces in order to be cooled and to be available to further cool a rotating machine element (3) that is situated in a housing (4). The heat exchanger is of approximately ring-shaped design, essentially surrounds the rotating machine element (3) and is integrated into the housing (4).

Abstract: A number of flat tubes, flat tube heat exchangers, and methods of manufacturing both are described and illustrated. The flat tubes can be constructed of one, two, or more pieces of sheet material. A profiled insert integral with the flat tube or constructed from another sheet of material can be used to define multiple flow channels through the flat tube. The flat tubes can be constructed of relatively thin material, and can be reinforced with folds of the flat tube material and/or of an insert in areas subject to higher pressure and thermal stresses. Also, the relatively thin flat tube material can have a corrosion layer enabling the material to resist failure due to corrosion. Heat exchangers having such flat tubes connected to collection tubes arc also disclosed, as are manners in which such tubes can be provided with fins.

Abstract: A number of flat tubes, flat tube heat exchangers, and methods of manufacturing both are described and illustrated. The flat tubes can be constructed of one, two, or more pieces of sheet material. A profiled insert integral with the flat tube or constructed from another sheet of material can be used to define multiple flow channels through the flat tube. The flat tubes can be constructed of relatively thin material, and can be reinforced with folds of the flat tube material and/or of an insert in areas subject to higher pressure and thermal stresses. Also, the relatively thin flat tube material can have a corrosion layer enabling the material to resist failure due to corrosion. Heat exchangers having such flat tubes connected to collection tubes are also disclosed, as are manners in which such tubes can be provided with fins.

Abstract: The invention relates to a heat exchanger comprising at least one pipe (1) and at least one lamella (2), for exchanging heat between a first coolant that flows through the pipe (1) and a second coolant that wets the heat exchanger under the influence of centrifugal forces in order to be cooled and to be available to further cool a rotating machine element (3) that is situated in a housing (4), where the heat exchanger is of approximately ring-shaped design, essentially surrounds the rotating machine element (3) and is integrated into the housing (4).

Abstract: A number of flat tubes, flat tube heat exchangers, and methods of manufacturing both are described and illustrated. The flat tubes can be constructed of one, two, or more pieces of sheet material. A profiled insert integral with the flat tube or constructed from another sheet of material can be used to define multiple flow channels through the flat tube. The flat tubes can be constructed of relatively thin material, and can be reinforced with folds of the flat tube material and/or of an insert in areas subject to higher pressure and thermal stresses. Also, the relatively thin flat tube material can have a corrosion layer enabling the material to resist failure due to corrosion. Heat exchangers having such flat tubes connected to collection tubes are also disclosed, as are manners in which such tubes can be provided with fins.