| 摘要 |
<p>The invention concerns a metal element (2) traversed by an air stream, comprising an upper longitudinal wall (6a), a lower longitudinal wall (6b), and two lateral walls (6c) as well as plural fins, at least one of the longitudinal walls (6a, 6b) of said metal element (2) being formed by a series of flats, said flats being rigidly linked together (23) such that at least one of the planar longitudinal walls (6a, 6b) circulates en electric current form one end to the other end of said planar longitudinal wall.</p> |
