| 摘要 |
<p>Tubular heat exchanger comprises screw-like channels (5, 6, 7) limited by a wire (12) arranged and clamped between tubes (1, 2, 3, 4). An independent claim is also included for a method for producing a tubular heat exchanger. Preferred Features: The wire is placed in grooves (10) arranged in the inner wall (9) of the outer tube and on the outer wall of the inner tube. The diameter of the groove on the outer wall of the inner tube is the same as the diameter of the wire.</p> |
