A heat exchanger includes plural heat exchange units arranged in series in a flowing direction of external fluid. A tube of the heat exchange units has a tube body and a protrusion. A dimension of the protrusion in a tube stacking direction is smaller than a dimension of the tube body in the tube stacking direction. A dimension of the protrusion in an air flowing direction is larger than a thickness of the tube body. An outer fin is joined to both the upstream tube and the downstream tube arranged in the air flowing direction. The protrusion of the upstream tube is connected to an upstream end of the tube body in the air flowing direction. The protrusion of the downstream tube is connected to a downstream end of the tube body in the air flowing direction.

A heat exchanger (1) for thermally coupling a first fluid to a second fluid so as to transfer heat and in a fluidically separate manner includes a securing assembly (8) of two cover parts (9) and at least one, preferably a plurality of guide parts (11), through which duct tubes (5) of the heat exchanger (1) pass. The duct tubes (5) extend inside a housing tube (2) along the longitudinal axis of the housing tube (2). The first fluid passes through the housing tube (2) outside of the duct tubes (5), and the second fluid passes through the duct tubes (5). The duct tubes (5) may have circular or flattened cross-sections.

A heat exchanger includes: tubes stacked in a stacking direction, through which fluid flows; and a tank having a core plate to which each of the tubes is connected. The tank has a first space and a second space separated from each other and arranged in the stacking direction to store fluid. The core plate has insertion holes arranged in the stacking direction, through which the tubes are respectively inserted. The core plate has a boundary portion opposing a boundary between the first space and the second space. The core plate has a rigid portion that overlaps at least one of the insertion holes at a position adjacent to the boundary portion so as to increase a rigidity of the core plate.

An apparatus includes a heat exchanger configured to be positioned around and coupled to a multi-axis gimbal. The heat exchanger includes an inlet configured to receive fluid containing heat generated by an equipment package carried by the gimbal. The heat exchanger also includes multiple heat rejection interfaces configured to reject the heat from the fluid into surrounding air in order to cool the fluid. The heat exchanger further includes an outlet configured to provide the cooled fluid from the heat exchanger. The heat rejection interfaces of the heat exchanger extend around the heat exchanger and are configured to reject the heat from the fluid regardless of a direction in which the gimbal is pointing the equipment package.

One embodiment provides a heat conveyance system, including: a top plate having a length dimension, a width dimension, and a depth dimension, wherein the length dimension is greater than the width dimension; at least two side plates, wherein each of the two side plates is mechanically coupled to a bottom face of the top plate in a lengthwise direction and wherein, when mechanically coupled, the at least two side plates are in a perpendicular direction with respect to the top plate and have a space between the at least two side plates; and at least three sealing pieces located between and mechanically coupled to two adjacent side plates.

A heat exchanger, comprising: a top cover (2) which is provided with a top cavity (21); a liquid-collecting chamber (1) which is provided with a liquid-collecting cavity (11); a housing (3) which is provided with a receiving cavity (31), neither of the liquid-collecting cavity (11) nor the top cavity (21) being in connection with the receiving cavity (31); an upper tube plate (4); a lower tube plate (5); and a heat exchange tube (6) which sequentially passes through the top cavity (21), the upper tube plate (4), the receiving cavity (31), the lower tube plate (5), and the liquid-collecting cavity (11); the two ends of the heat exchange tube (6) are in connection with the liquid-collecting cavity (11) and the top cavity (21), respectively; sealing members (8) are provided between the outer circumference of the heat exchange tube (6) and the upper tube plate (4) and between the outer circumference of the heat exchange tube (6) and the lower tube plate (5). By means of the three-section structure consisting of the liquid-collecting chamber (1), the top cover (2), and the housing (3), and the structure of the heat exchange tube (6) respectively passing through the upper tube plate (4) and the lower tube plate (5) in a dismountable manner, the heat exchanger is easy to mount and dismount, easing the maintenance and cleaning of the heat exchanger; the heat exchanger can be used, in particular, in the heat exchange of a strongly corrosive medium under a high temperature, and has a compact structure and high heat exchange efficiency.

A heat exchanger includes: a main body; and a tube sheet that is bonded to the main body with a brazing material and is used to fix the main body to a support by a fixing member. The tube sheet includes: a bonding surface to which the brazing material is applied; a rising portion that rises from the bonding surface; and a through-hole through which the fixing member is passed. The through-hole is opened at the rising portion, penetrates the tube sheet, and has an inner peripheral surface to which the brazing material is not applied. The main body includes heat transfer tubes through which refrigerant flows, and the tube sheet is bonded to surface of the heat transfer tube.

A heat exchanger, comprising: a top cover (2) which is provided with a top cavity (21); a liquid-collecting chamber (1) which is provided with a liquid-collecting cavity (11); a housing (3) which is provided with a receiving cavity (31), neither of the liquid-collecting cavity (11) nor the top cavity (21) being in connection with the receiving cavity (31); an upper tube plate (4); a lower tube plate (5); and a heat exchange tube (6) which sequentially passes through the top cavity (21), the upper tube plate (4), the receiving cavity (31), the lower tube plate (5), and the liquid-collecting cavity (11); the two ends of the heat exchange tube (6) are in connection with the liquid-collecting cavity (11) and the top cavity (21), respectively; sealing members (8) are provided between the outer circumference of the heat exchange tube (6) and the upper tube plate (4) and between the outer circumference of the heat exchange tube (6) and the lower tube plate (5). By means of the three-section structure consisting of the liquid-collecting chamber (1), the top cover (2), and the housing (3), and the structure of the heat exchange tube (6) respectively passing through the upper tube plate (4) and the lower tube plate (5) in a dismountable manner, the heat exchanger is easy to mount and dismount, easing the maintenance and cleaning of the heat exchanger; the heat exchanger can be used, in particular, in the heat exchange of a strongly corrosive medium under a high temperature, and has a compact structure and high heat exchange efficiency.

A crossflow heat exchanger includes an outer housing, an inlet that receives a hot fluid to be cooled and a monolithic manifold includes a central receiving reservoir and one or more outer reservoirs. The fluid received at the inlet passing into the central receiving reservoir. The exchanger also includes an outlet connected to the one or more outer reservoirs and tubes disposed within the outer housing that connect the central receiving reservoir and the one or more outer reservoirs. The monolithic manifold includes a gap formed between the central receiving reservoir and one or more outer reservoirs.

Higher throughput in aqueous addition polymerization is made possible by use of an external shell and tube heat exchanger operated in reverse mode, with coolant flowing through the tubes and polymerization mixture flowing through the shell around the tubes.