| 摘要 |
<p>A heat exchanger (30) including a shell (32) having an inner chamber defined by an inside wall surface, and a tube stack (31) disposed within the inner chamber. The shell (32) is formed of a single piece of material. The tube stack (31) includes a plurality of flat elongated tubes (38) arranged in a stack (31). Each of the tubes (38) is formed of a single piece of material that is joined along a seam (38c). A first fluid flow path is defined within the tubes (38). The tubes (38) each include a plurality of projections projecting (43) outwardly therefrom. The projections (43) on adjacent tubes (38) contact one another, thereby forming a second fluid flow path.</p> |
