| 摘要 |
A heat-exchanger has a tubular body comprising first and second elongated sheets extending parallel inside the tube. The sheets are connected to each other along the opposite longitudinal edges of each sheet respectively, and along first and second seams extending parallel to the edges. The sheets, edges and seams delimit three parallel channels in the length direction of sheets. A heat-exchanger comprises a tube (1) for conducting a first medium that is to be cooled; and a tubular body arranged inside the tube for conducting a cooling medium. The tubular body comprises first and second elongated sheets (11, 12) extending in parallel inside the tube. The sheets are connected to each other along the opposite longitudinal edges (28, 29) of each sheet respectively, and along first and second seams (16, 17). The seams extend in parallel to the edges. The sheets, edges, and seams delimit three parallel channels (13, 14, 15) in the length direction of the sheets. |
