A double-row bent heat exchanger is provided. The heat exchanger includes: a first header and a second header; flat tubes each divided into a first straight segment connected to the first header, a second straight segment connected to the second header and a twisted segment connected between the first straight segment and the second straight segment, along a length direction of the flat tube; and fins disposed between adjacent first straight segments and between adjacent second straight segments. The flat tube is bent at the twisted segment around a first bending axis (L) to provide a first bending portion. The first header and the second header are bent around at least one second bending axis (K) to provide at least one second bending portion.

A liquid-cooled heat dissipation device is disclosed, comprising a main body, a centrifugal pump, an inlet pipe and an outlet pipe. The main body comprises liquid flow channels and liquid storage tanks. The liquid flow channels are circumferentially arranged and spaced apart. The liquid storage tanks are located on both sides of the main body, and the liquid storage tanks on the same side are connected by liquid flow channels. The centrifugal pump is installed in one of the liquid storage tanks. The inlet pipe and the outlet pipe are in spatial communication with the other two liquid storage tanks, respectively. The centrifugal pump guides a cooling liquid through the inlet pipe, main body and outlet pipe. The cooling liquid travel through the liquid storage tanks via the liquid flow channels and forms radial jet flows after being pumped by centrifugal pump.

A heat exchanger includes first and second fluid circuits. The first fluid circuit is formed by a first set of fins, a first inlet header, and a first outlet header. The first set of fins extend radially and are coaxial with each other. The first inlet header is fluidly connected to and is disposed on an upstream end of the first fins. The first outlet header is fluidly connected to and is disposed on a downstream end of the first fins. The second fluid circuit is formed by a second set of fins, a second inlet header, and a second outlet header. The second fins extend radially and are coaxial with each other. An annular shape of the second inlet header conforms to the circular shape of the first inlet header. An annular shape of the second outlet header conforms to the circular shape of the first outlet header.

A microtube heat exchanger is disclosed, including two end plates with an array of holes or openings and an array of microtubes disposed in the array of openings between the two end plates. The heat exchanger can be used in environmental control systems, including systems for aerospace applications.

A heat exchanger for changing a temperature of a pumped gas flow and a pump comprising the heat exchanger is disclosed. The heat exchanger comprises: at least one tube configured to contain a flow of fluid; said at least one tube being at least partially embedded within a block of material; wherein said heat exchanger comprises mounting means configured to mount said heat exchanger adjacent to a gas port of a pump such that a least a portion of said heat exchanger extends into a path for gas flow flowing through said gas port; wherein the mounting means comprises a flange, the flange being configured to connect with the gas port of the pump, the block being mounted to the flange such that the block extends towards the rotor of the pump when the flange is connected with the gas port of the pump.

A core arrangement for a heat exchanger includes a first core layer disposed along a first plane and having an inlet and outlet oriented along a first axis within the first plane and a first core stage disposed in fluid communication between the inlet and the outlet. The first core stage includes a first upstream fluid intersection downstream of and adjacent the inlet and having a first inlet continuation and a first bifurcation. The first core stage further includes a first downstream fluid intersection upstream of and adjacent the outlet and having a first outlet continuation and a first recombination. A plurality of first core tubes fluidly connect the first bifurcation to the first recombination. The first core layer further includes a second core stage disposed in fluid communication between the first inlet continuation and the first outlet continuation. The second core stage includes a second upstream fluid intersection downstream of the first inlet continuation and having a second bifurcation, and a second downstream fluid intersection upstream of the first outlet continuation and having a second recombination. A plurality of independent second core tubes fluidly connect the second bifurcation to the second recombination.

A heat exchange structure includes a primary heat exchange body with a first fluid channel fluidly separated from a second fluid channel by a barrier channel, an inlet manifold in fluid communication with the first fluid channel, and a secondary heat exchange body. The secondary heat exchange body is in fluid communication with the barrier channel, is arranged within the inlet manifold, and fluidly couples the barrier channel to the external environment. Fluid systems and heat exchange methods are also described.

A heat exchanger with increased heat transfer capability includes first and second end plates, tubes extending between the first and second end plates and fins disposed between the tubes. The heat exchanger is disposable within and differs in shape from a space defined between first and second walls such that corners of the first end plate abut the first wall and a point of the second end plate abuts the second wall, the first wall diverges from the corners of the first end plate to define a first open region and the second wall diverges from the point of the second end plate to define second open regions. At least one of the first end plate and the second end plates includes enhancements fluidly communicative with the at least one corresponding one of the first open region and the second open regions.

A heat exchanger header includes a primary fluid duct extending between a fluid port and a first branched region, a plurality of secondary fluid ducts fluidly connected to the primary fluid duct at the first branched region, wherein an overhang region is formed laterally between adjacent ones of the plurality of secondary fluid ducts, and wherein each of the plurality of secondary fluid ducts extends between the first branched region and a second branched region, a plurality of tertiary fluid ducts fluidly connected to each of the plurality of secondary fluid ducts at the second branched regions, a primary horn integrally formed with and extending from the overhang region, an at least one secondary horn integrally formed with and extending from one of the plurality of tertiary fluid ducts, and a sacrificial support structure extending between the primary horn and the at least one secondary horn.

A cooling system for an aircraft, including a heat exchanger for cooling a hot fluid with cooling air, an air intake for the supply of cooling air and a Coandă-effect air amplifier for the creation of a flow of cooling air.