GEFALZTES,GEBOGENES UND WIEDER EXPANDIERTES WÄRMETAUSCHERROHR UND ANORDNUNGEN

摘要

A heat exchanger assembly of the side-entry type includes at least one fin set (24) and an elongated heat exchanger tube (12,13,14) having a collapsed sidewall (16) extending substantially the length of the tube which permits the bending of the elongated heat exchanger tube at the return bend portions and permits expansion of the elongated tube (12,13,14) to engage the fin set (24). Method and apparatus for making the elongated heat exchanger tube having the collapsed sidewall substantially extending the length of the tube as well as methods of making heat exchanger assemblies are disclosed.