An air cooled condenser, and methods of manufacturing and field assembly of air cooled condensers in which one half of the primary heat exchanger coils are shop fitted with a length of steel configured to quickly and easily mate, during field assembly, with an opposing primary heat exchanger coil of standard configuration, thereby reducing material, shipping, and handling costs, improving positioning and orientation of HECs during assembly, and reducing the requirement for expensive field welding.

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.

The invention relates to a method for producing a wound heat exchanger which has a core tube and a tube bundle, said tube bundle having a plurality of tubes wound about the core tube in a helical manner for conducting a first fluid. The course of the tubes of the tube bundle from a first tube base of the heat exchanger to a second tube base of the heat exchanger about the core tube is automatically calculated, and at least one position at which a respective tube runs according to the calculated course is marked by means of at least one light beam, wherein the respective tube is installed according to the marking.

The invention relates to a method for producing a wound heat exchanger which has a core tube and a tube bundle, said tube bundle having a plurality of tubes wound about the core tube in a helical manner for conducting a first fluid. The course of the tubes of the tube bundle from a first tube base of the heat exchanger to a second tube base of the heat exchanger about the core tube is automatically calculated, and at least one position at which a respective tube runs according to the calculated course is marked by means of at least one light beam, wherein the respective tube is installed according to the marking.

A built-up beam includes a pair of I-beams each having opposing flanges, a web that extends between the opposing flanges, a plurality of flange openings in each of the opposing flanges, a plurality of web openings in the web, and a plurality of bolt holes in one of the opposing flanges. The I-beams are stacked together flange-to-flange in a stacked beam configuration and a plurality of bolts extend through the plurality of bolt holes and secure the pair of I-beams together in the stacked beam configuration.

A built-up beam includes a pair of I-beams each having opposing flanges, a web that extends between the opposing flanges, a plurality of flange openings in each of the opposing flanges, a plurality of web openings in the web, and a plurality of bolt holes in one of the opposing flanges. The I-beams are stacked together flange-to-flange in a stacked beam configuration and a plurality of bolts extend through the plurality of bolt holes and secure the pair of I-beams together in the stacked beam configuration.

A built-up beam includes a pair of I-beams each having opposing flanges, a web that extends between the opposing flanges, a plurality of flange openings in each of the opposing flanges, a plurality of web openings in the web, and a plurality of bolt holes in one of the opposing flanges. The I-beams are stacked together flange-to-flange in a stacked beam configuration and a plurality of bolts extend through the plurality of bolt holes and secure the pair of I-beams together in the stacked beam configuration.

A stage includes a plate and a heat exchanger. The plate has a front surface, on which a substrate is mounted, and a rear surface. The heat exchanger is configured to individually supply a heat exchange medium to a plurality of two-dimensionally distributed and mutually non-inclusive regions of the rear surface of the plate and to recover the heat exchange medium thus supplied.

A built-up beam includes a pair of I-beams each having opposing flanges, a web that extends between the opposing flanges, a plurality of flange openings in each of the opposing flanges, a plurality of web openings in the web, and a plurality of bolt holes in one of the opposing flanges. The I-beams are stacked together flange-to-flange in a stacked beam configuration and a plurality of bolts extend through the plurality of bolt holes and secure the pair of I-beams together in the stacked beam configuration.

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.