A method of assembling a thermosiphon system includes placing a base of an evaporator and a tube of a condensate line in a brazing fixture such that the base covers an aperture in a bottom of the tube with a bottom surface of the base abutting a precision machined surface of the brazing fixture, and simultaneously brazing the base and the tube while held by the brazing fixture to form a unitary body in a single brazing process, the unitary body including the evaporator and the condensate line.

A panel, for retaining a heating or cooling tube relative to a substrate, has a standoff extending from a primary flap, wherein the standoff includes a tube contacting surface. A lateral fold extends from the standoff and includes a jaw having a tube retaining surface, wherein the tube contacting surface and the tube retaining surface are located to define a tube retaining channel in a closed position of the jaw. The panel can be formed of a single piece of sheet metal, wherein the sheet metal and configuration of the panel bias the jaw to the closed position.

An exemplary heat exchanger is configured for removing heat energy from a heat generator. The heat exchanger including at least one conduit for a working fluid, which is arranged in an upright position of at least 45, each conduit having an exterior wall and at least one interior wall for forming at least one evaporator channel and at least one condenser channel within the conduit. Furthermore, the heat exchanger includes a first heat transfer element for transferring heat into the evaporator channel and a second heat transfer element for transferring heat out of the condenser channel.

A process of producing shell and tube heat exchangers where the ends of the tubes are secured to a tube sheet while reacting applied FSW forces without introducing a crevice or local deformation near the ends of the tubes. In particular, an interference fit is used to lock the ends of the tubes into the tube sheet without flaring or expanding the tube ends. A FSW process is then used to weld the ends of the tubes to the tube sheet.

A process of producing shell and tube heat exchangers where the ends of the tubes are secured to a tube sheet while reacting applied FSW forces without introducing a crevice or local deformation near the ends of the tubes. In particular, an interference fit is used to lock the ends of the tubes into the tube sheet without flaring or expanding the tube ends. A FSW process is then used to weld the ends of the tubes to the tube sheet.

The present invention relates to a heat exchanger for controlling the temperature of a first fluid using a second fluid, wherein the heat exchanger has a base for separating the first fluid from the second fluid, said base having a sealing region. Furthermore, the heat exchanger has a partition for separating the first fluid from the second fluid, wherein the at least one partition is connected in a fluid-tight manner to the base, wherein the at least one partition forms a fluid duct for the first fluid. Furthermore, the heat exchanger has a housing. In the sealing region between the base and the housing, there is arranged a sealing element which is pressed in a fluid-tight manner against the base and against the housing.

A process of producing shell and tube heat exchangers where the ends of the tubes are secured to a tube sheet while reacting applied FSW forces without introducing a crevice or local deformation near the ends of the tubes. In particular, an interference fit is used to lock the ends of the tubes into the tube sheet without flaring or expanding the tube ends. A FSW process is then used to weld the ends of the tubes to the tube sheet.

A heat exchanger including a header having a plurality of header openings with rigid tubes that may be made of plastic are inserted in the openings. The tubes are sealed to the header to prevent leakage between the header and the tubes to prevent water and air leakage between the wet, scavenger air stream flowing through the tubes and a dry air stream flowing around the tubes. A method of making the heat exchanger includes providing the openings with a flange and uses an interference fit between the rigid heat exchange tubes and the header openings. A self-leveling sealant may be used to seal the heat exchanger tubes to the header using, for example, a paint roller and/or a paint sprayer.

A method of assembling a thermosiphon system includes placing a base of an evaporator and a tube of a condensate line in a brazing fixture such that the base covers an aperture in a bottom of the tube with a bottom surface of the base abutting a precision machined surface of the brazing fixture, and simultaneously brazing the base and the tube while held by the brazing fixture to form a unitary body in a single brazing process, the unitary body including the evaporator and the condensate line.