A heat pipe includes an inlet through which a working fluid is injected. The inlet includes a non-sealed portion and a sealed portion connected to the non-sealed portion. The non-sealed portion and the sealed portion each include two outermost metal layers and a plurality of intermediate metal layers stacked between the outermost metal layers. The heat pipe further includes a porous body arranged in the inlet.

A vapor chamber has upper and lower casings and a wick structure therebetween. The upper and lower casings have upper and lower heat exchange chamber areas having multiple upper and lower surface features thereon, separated by multiple upper and lower vapor areas therebetween, respectively. The upper and lower heat exchange chamber areas are surrounded by walls, having flat rims, respectively. The height of the upper surface features is greater than the height of the lower surface features, whereby a top surface of the wick structure lies flush with the lower flat rim. The upper and lower heat exchange chamber areas form a vacuum chamber. An airtight sealed connection is formed at the flat rims of the surrounding walls of the upper and lower heat exchange chamber areas.

A heat pipe, a heat pipe assembly and a method for assembling the heat pipe assembly. The heat pipe includes a main body part and an insertion part. The insertion part is connected to the main body part. The main body part and the insertion part together form a single hollow pipe. The insertion part has an outer surface and at least one recessed part formed on the outer surface.

A heat exchanger including a shell having a longitudinal axis, a plurality of baffles, such as elliptical sector-shaped baffles, each mounted in the shell at a helix angle H.sub.B to guide a fluid flow into a helical pattern through the shell. Each of the plurality of baffles includes an outer circumferential edge, a proximal radial edge, a distal radial edge, a proximal side, a distal side, and a plurality of spaced apart holes that are traversed by a plurality of axially extending tubes. Each of the first plurality of seal strips is disposed from a proximal of the plurality of baffles to a distal of the plurality of baffles.

A heat exchanger capable of conforming to expansion/contraction due to external stresses as well as adjusting/adapting to surface imperfections at the interface of the heat exchanger with additional components is disclosed. The heat exchanger is made up of various heat exchanger elements where the elements are interconnected in such a manner that they can shift relative to one another along and/or about different axes while maintaining fluid flow through the heat exchanger. Each element has a fluid inlet, fluid outlet and a flow passage extending therebetween, the elements being arranged such that the outlet of one element is fluidly connected to the inlet of the adjacent element. The individual elements are also physically interconnected to allow for longitudinal and/or lateral shifting in response to external expansion/contraction forces while maintaining fluid flow through the entire heat exchanger, as well as to tilting about each of these axes.

A helical heat exchanger assembly comprises a tube having first and second ends, a length, an inner diameter and a cross-section incorporating the inner diameter, and a thermally conductive tube insert having a length and an outer diameter substantially equal to the inner diameter of the tube, the tube insert having first and second ends and comprising a single helix extending along the length of the tube insert and twisted around a central axis. The tube insert is sealed within the tube by sealing an outer edge of the helix to an inner surface of the tube to form fluid-tight first and second fluid flow paths defined between opposing sides of the helix and the inner surface of the tube, respectively. A plurality of inlet and outlet fluid ports are positioned for passage of a first and second fluid into and out of the tube. The helix has a predetermined pitch which may be less than or greater than the tube inner diameter and defines a length of the first and second fluid flow paths, wherein the pitch of the helix may be constant or variable along the length of the tube insert.

An apparatus is provided herein. The apparatus includes a support member, a supply channel, a return channel, a supply port to provide a fluid to the supply channel, a return port to receive the fluid from the return channel, at least two port fittings, a first sleeve, and a second sleeve. The first sleeve is connectable to one of the at least two port fittings and forms a fluid tight seal between the first sleeve and the supply channel. The second sleeve is connectable to the other of the at least two port fittings and forms a fluid tight seal between the second sleeve and the return channel.

A brazed plate heat exchanger (100) for exchanging heat between at least two fluids comprises several elongate heat exchanger plates (110) provided with a pressed pattern comprising depressions and elevations adapted to keep the plates on a distance from one another by contact points between the elevations and depressions of neighboring plates under formation of interplate flow channels for media to exchange heat. At least four port openings are placed in corner regions of the elongate heat exchanger plates and have selective fluid communication with the interplate flow channels such that the fluids to exchange heat will flow between port openings parallel to long sides of the elongate heat exchanger plates. A circumferential seal sealing off the interplate flow channels from communication with the surroundings is provided, and the heat exchanger plates are joined by brazing. The circumferential seal results partly from contact between skirts of neighboring plates contacting one another, said skirts extending at least partly along two sides of each heat exchanger plates, and partly from contact between flat areas extending along two other sides of the heat exchanger plates.

An internal heat exchanger for an air conditioning system of a vehicle having an intermediate portion and two end portions, each of the end portions includes a first opening for the passage of a first conditioning fluid inside the internal heat exchanger and a second opening for the passage of a second conditioning fluid inside the heat exchanger. The intermediate portion is hollow, defines an inner volume, and includes inner conduits housed inside the inner volume extending between the end portions. The first openings are fluidically connected via respective connecting conduits to each of the inner conduits and the second openings are fluidically connected to the inner volume via an individual conduit.

A direct contact steam injection heater that includes a stem plug that is rotatable over 360. The stem plug is connected to an actuator that is operable to rotate the stem plug over 360 of rotation during both the heating function of the steam injection heater and during a clean-in-place process. The stem plug includes a regulating head having a pair of sealing inserts formed on each of a pair of sealing faces. The sealing inserts are biased outward into contact with an inner surface that includes the steam injection nozzles. As the regulating head rotates between a closed position and an open position, the nozzles are exposed to allow steam to flow into the product being heated. The regulating head further includes a pair of foils. During the clean-in-place operation, the foils create a turbulent flow of cleaning liquid within the steam chamber.