A heat exchanger includes flat tubes, a header, and a refrigerant inlet. The header has a first plate, a second plate, and a third plate. The first plate has a ridge portion defining a tank space. The second plate has a first flow passage and a second flow passage. The first flow passage extends in such a manner that an area of the first flow passage coincides with an area of the tank space. The second flow passage extends in such a manner that an area of the second flow passage does not coincide with the area of the tank space. An upper portion of the first flow passage and an upper portion of the second flow passage are connected to each other via a first connecting flow passage. A lower portion of the first flow passage and a lower portion of the second flow passage are connected to each other via a second connecting flow passage. The third plate has a communicating hole that allows the first flow passage and each of the flat tubes to communicate with each other.

A heat exchange device comprising phase change material-impregnated heat conductive foam disposed between fluid stream channels in a heat exchanger element.

A nonlinear coolant tube adapted for use in a heat exchanger core that is configured to port a hot fluid therethrough and a cold fluid therethrough while maintaining isolation of the hot fluid from the cold fluid, and including a hot circuit defining a hot circuit inlet, a hot circuit outlet, a first edge, and a second edge, the first edge distal the second edge, the first edge proximate the hot circuit inlet and the second edge proximate the hot circuit outlet. The nonlinear coolant tube is configured to provide a non-uniform heat transfer profile between the hot fluid and the cold fluid from the first edge to the second edge, such that a thermal resistance of the nonlinear coolant tube near the first edge is greater than the thermal resistance of the nonlinear coolant tube near the second edge.

An enhanced gravity-driven, thin film condensation heat transfer condenser is disclosed for use in a thermosyphon performing in two perpendicular orientations, as well as orientations in between. The thermosyphon includes an evaporator fluidly coupled to a first condenser configured with a plurality of fins, with each of the plurality of fins having notches adjacent to flanges, the notches forming vapor flow channels through the plurality of fins. The first condenser is fluidly coupled to a second condenser, and vapor flowing from the evaporator must first pass through the first condenser before entering the second condenser.

The present disclosure provides a micro-channel heat exchanger including two collecting pipes, and a plurality of flat pipes and two side plates that are arranged between the two collecting pipes, wherein the two side plates are located on two outer sides of the flat pipes and are defined as a first side plate and a second side plate respectively; fins are respectively arranged between the first side plate and the adjacent flat pipe and between the second side plate and the adjacent flat pipe; and the outer side of the first side plate and/or the second side plate is provided with a blocking part at a position close to the collecting pipe, and the blocking part can prevent composite material on the collecting pipe from flowing to a middle part of the first side plate and/or the second side plate.

A heat exchange tube and a heat exchanger are provided. A tube wall of the heat exchange tube includes a first wall and a second wall, a first segment of the first wall includes one of a first groove or a first protrusion, a second segment of the first wall includes one of a second groove or a second protrusion, a first segment of the second wall includes the other one of the first groove or the first protrusion, the first protrusion is arranged in the first groove, the second segment of the second wall includes the other one of the second groove or the second protrusion, and the second protrusion is arranged in the second groove. At least part of each of the first segment and the second segment of the first wall is arranged between the first segment and the second segment of the second wall.

An evaporator element is provided and includes a body defining channels, each of which includes grooves respectively delimited by first and second interior facing sidewalls of the body which form a base and an apex with an apex angle opposite the base and defined such that, for a fluid flow moving through one of the channels in a microgravity environment a portion of the fluid flow in a liquid phase within a groove of the channel will move in the groove from the base to the apex and a portion of the fluid flow in a vapor phase within a groove of the channel will move in the groove from the apex to the base.

A heat exchanger in which an end portion of a heat exchange element is appropriately joined to an insertion hole of a header. The heat exchanger includes a heat exchange element extending in a first direction and a header to which the heat exchange element is connected. The heat exchange element includes at least one heat transfer tube extending in the first direction and a fin provided on part of an edge portion of the at least one heat transfer tube in a second direction crossing orthogonally with the first direction. An end portion in the first direction of the heat exchange element includes an insertion part being inserted into an interior of the header, an abutment part abutting the header in a part other than the insertion part, and a spaced-apart part being spaced apart from the header in a part other than the insertion part.

A heat exchanger (100) and an air-conditioning system. The heat exchanger (100) comprises: a group of first heat exchange tubes (T1) for forming a first loop (C1); a group of second heat exchange tubes (T2) for forming a second loop (C2); and a group of fins (3), at least a plurality of fins (3) in the group of fins (3) being in contact with both at least a plurality of first heat exchange tubes (1) in the group of first heat exchange tubes (T1), and at least a plurality of second heat exchange tubes (T2) in the group of second heat exchange tubes (T2). If one loop of an air-conditioning system having two loops is closed, heat exchange regions of the fins for the loop can be used in the other loop, thereby improving the heat exchange efficiency of a heat exchanger.

A bent heat exchanger is provided. The bent heat exchanger includes: a first header and a second header; a plurality of flat tubes, two ends of the flat tube being connected to the first header and the second header respectively; and fins, each disposed between adjacent flat tubes, extending in a corrugated shape along a length direction of the flat tube. The first header and the second header each have a slot running through a wall thereof and a protrusion arranged to an inner surface of the wall thereof. The protrusion includes an arc portion connected to the edge of the slot, and an extension portion protruding inwards from the arc portion. An arc radius of the arc portion is less than or equal to and greater than 0.6 times a thickness of a wall of the corresponding first header or second header.