| 摘要 |
<p>A heat exchanger of light weight having high heat exchange efficiency which comprises a chamber having an inlet and an outlet for a fluid, a columnar body positioned vertically at the center of the chamber and a plurality of pipes surrounding spirally the columnar body and arranged side by side at substantially a horizontal position, the pipes being supported by a plurality of supports fixed to the outer wall of the columnar body or the inner wall of the chamber.</p> |
