Abstract: A heat exchanger (10) having a pair of spatially separated manifolds (12 and 14) interconnected by a plurality of transverse tubes (16). The ends of the tubes are attached to a plurality of manifold inserts (20) slidably received in the manifolds. The lengths of the individual manifold inserts may be controlled to adjust the pitch and the number of the transverse tubes. The heat exchanger configuration is ideally suited for fabricating low production runs and prototype heat exchangers.

Abstract: A heat exchanger (10) assembly with a first header (12), a second header (14), a plurality of seamed or folded type heat exchanger tubes (18) extending between the two headers (12, 14), and a plurality of heat exchanger fins (16). Each of the plurality of fins (16) has between 0.01% and 0.9% magnesium to improve the braze between the header (12, 14) and tube joint and the tube seam to inner surface joint (140). Additionally, the headers (12, 14) have a cladded inner surface with between about 0% to about 12.6% silicon to improve the braze at the tube-to-header joint.

Abstract: A heat exchanger assembly with a first header, a second header, a plurality of seamed or folded type heat exchanger tubes extending between the two headers, and a plurality of heat exchanger fins. Each of the plurality of fins has between 0.01% and 0.9% magnesium to improve the braze between the header and tube joint and the tube seam to inner surface joint. Additionally, the headers have a cladded inner surface with between about 0% to about 12.6% silicon to improve the braze at the tube-to-header joint.