A heat exchanger includes a main body provided with first flow paths through which a first fluid flows and second flow paths through which a second fluid flows. Each first flow path includes an integrated part, a buffer part, and a divided part arranged in this order from an inlet of the main body. The integrated part includes a first flow path space defined by a peripheral wall including a pair of mutually facing partition walls. The buffer part includes a deformed flow path space formed by deforming the first flow path space such that first displacement parts or each of multiple pairs of first displacement parts provided at intervals on the pair of partition walls approach each other. The divided part includes multiple divided flow path spaces formed by dividing the first flow path space by connecting the first displacement parts of each pair to each other.

A heat exchanger includes a main body provided with first flow paths through which a first fluid flows and second flow paths through which a second fluid flows. Each first flow path includes an integrated part, a buffer part, and a divided part arranged in this order from an inlet of the main body. The integrated part includes a first flow path space defined by a peripheral wall including a pair of mutually facing partition walls. The buffer part includes a deformed flow path space formed by deforming the first flow path space such that first displacement parts or each of multiple pairs of first displacement parts provided at intervals on the pair of partition walls approach each other. The divided part includes multiple divided flow path spaces formed by dividing the first flow path space by connecting the first displacement parts of each pair to each other.

A thermal transfer device has a body and a fluid conduit defined in the body. The body has a thermal transfer surface configured to be placed in contact with a target component. The fluid conduit is configured for conveying fluid through the body and is thermally coupled to the thermal transfer surface.

A thermal transfer device has a body and a fluid conduit defined in the body. The body has a thermal transfer surface configured to be placed in contact with a target component. The fluid conduit is configured for conveying fluid through the body and is thermally coupled to the thermal transfer surface.

Accroding to the present disclosure, a heat sink, which may be used e.g. for LED lamps or bulbs for motor vehicle lights, includes: a plate-like portion extending along an axis with opposed mounting surfaces for at least one heat source, such as e.g. a LED lighting source, and a finned portion thermally coupled with the plate-like portion and including a plurality of annular fins extending around said axis.

Accroding to the present disclosure, a heat sink, which may be used e.g. for LED lamps or bulbs for motor vehicle lights, includes: a plate-like portion extending along an axis with opposed mounting surfaces for at least one heat source, such as e.g. a LED lighting source, and a finned portion thermally coupled with the plate-like portion and including a plurality of annular fins extending around said axis.

A furnace assembly for use with a gas fuel that includes a cabinet and a burner located in the cabinet that is operable to ignite the gas fuel. The furnace also includes a heat exchanger assembly in communication with the burner and open to receiving the ignited gas fuel, the heat exchanger assembly including tubes. Each tube includes a first section with an inlet, a horizontal section having a first internal diameter, and a vertical section. Each tube also includes a second section extending from the first section and having a second internal diameter less than the first internal dimeter. The second section also includes a serpentine flow path up and down in the vertical direction and an outlet. The gas fuel entering a tube stays in the tube until flowing out of the tube. The furnace also includes a blower operable to move air through the cabinet and over the heat exchanger assembly.

A furnace assembly for use with a gas fuel that includes a cabinet and a burner located in the cabinet that is operable to ignite the gas fuel. The furnace also includes a heat exchanger assembly in communication with the burner and open to receiving the ignited gas fuel, the heat exchanger assembly including tubes. Each tube includes a first section with an inlet, a horizontal section having a first internal diameter, and a vertical section. Each tube also includes a second section extending from the first section and having a second internal diameter less than the first internal dimeter. The second section also includes a serpentine flow path up and down in the vertical direction and an outlet. The gas fuel entering a tube stays in the tube until flowing out of the tube. The furnace also includes a blower operable to move air through the cabinet and over the heat exchanger assembly.

A ducted heat exchanger system for a gas turbine engine includes an additive manufactured heat exchanger core with a contoured external and/or internal geometry. A method of additively manufacturing a heat exchanger for a gas turbine engine includes additively manufacturing a core of a heat exchanger to set a ratio of local surface area to flow area to control a pressure drop per unit length along the core.

The disclosure is related to a heat dissipation structure. The heat dissipation structure is adapted to accommodate a fluid and thermally contact a heat source. The heat dissipation structure includes a heat conductive plate and a channel arrangement. The heat conductive plate is configured to thermally contact the heat source. The channel arrangement is located on the heat conductive plate, and the channel arrangement includes a wider channel portion and a narrower channel portion. The wider channel portion is wider than the narrower channel portion, and the wider channel portion is connected to the narrower channel portion so that the channel arrangement forms a loop. The channel arrangement is configured to accommodate the fluid and allow the fluid to absorb heat generated by the heat source through the heat conductive plate so as to at least partially change phase of the fluid.