A gearbox and a method for additively manufacturing the gearbox are provided. The gearbox includes a housing having an integral heat exchanger additively manufactured within the housing. The heat exchanger includes a plurality of heat exchange passageways for transferring heat between two or more fluids. The heat exchanger is defined at any suitable location or locations within the housing, for example, within voids defined between the walls of the housing and components housed within housing, such as driveshafts, gears, bearings, etc.

A heat exchanger includes a metal tube and a composite polymer fin in thermal contact with the metal tube. The fin is formed of a polymer and a thermally conductive filler such that the fin has a thermal conductivity greater than or equal to 0.5 Watts per meter Kelvin.

A modulator for a sub-cool condenser assembly including a condenser. The modulator includes a plurality of extruded tubes positioned to convey liquid refrigerant towards an outlet of the modulator.

The present invention relates to a heat exchanger comprising a plurality of exchange tubes (1) mounted joined longitudinally in such a way as to create a front surface portion (4) creating an obstacle to an incident heat flow and at least one heat flow sensor (5) disposed in a support (12) located between two adjacent exchange tubes (1), characterized in that the support (12) of the heat flow sensor (5) is brazed to at least one of the two tubes (1) and is flattened on the side that is to be disposed at the front (4), with reference to the incident heat flow, in such a way as to be able to be inserted between the two adjacent tubes (1) at the location of said local deformations (11).

A condensation exchanger for heating of water and for production of sanitary water, providing a first inner coil with plain surface, and a second outer coil, said second coil being externally spirally wound with respect to said first coil, within said coils circulating a thermal carrier fluid, said first coil exchanging heat with combustion fumes by radiation and convection, and said second coil exchanging heat with the combustion fumes by condensation, wherein said second coil has a plain surface, and in that an insulating septum is provided, said septum dividing said exchanger in a first upper or combustion zone, and a second lower zone, said insulating septum dividing said exchanger in said two areas with a ratio of:
45%?H.sub.1L?60%.

The invention relates to a device (1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h, 1i) for heat exchange, in particular in a refrigerant circuit. The device (1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h, 1i) comprises at least one first flow path (2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h, 2i) and at least one second flow path (3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h, 3i) which, in a cross section perpendicular to a longitudinal direction (L) of the device (1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h, 1i), are disposed coaxially with respect to one another with each comprising at least one flow channel (4a, 4b, 4c, 4d, 4e, 4f, 4g, 4h, 4i, 5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h, 5i). One wall of the at least one flow channel (4a, 4b, 4c, 4d, 4e, 4f, 4g, 4h, 4i, 5a, 5b, 5c, 5d, 5e, 5f, 5g, 5h, 5i) of at least one flow path (2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h, 2i, 3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h, 3i) is realized of a synthetic material. The flow paths (2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h, 2i, 3a, 3b, 3c, 3d, 3e, 3f, 3g, 3h, 3i) are each implemented as a multiplicity of flow channels (4a, 4b, 4c,