TUBE AND SHELL HEAT EXCHANGER AND METHOD

摘要

A method is disclosed for producing heat exchanger tubing for use in tube and shell heat exchangers having improved heat exchange and improved fluid flow around the heat exchange tubes in which cylindrical tubing is deformed by pressure rollers to produce tubes having cylindrical ends and intermediate portions of elliptical cross section. These tubes may also be bent into U-shaped heat exchange tubes. The cylindrical end portions on one end are secured in a tube sheet (22) and the elliptical intermediate portions extend through baffle plates (24) having openings sized according to TEMA standards.