| 摘要 |
<p>The metal flue for use in houses and showrooms is designed to act as a heat exchanger. It comprises two round or polygonal pipes (2,3) one inside the other. The air in the space (5) between the pipes is heated by the hot gases (4) flowing inside the inner one (3). The pipes can be inserted in any brick chimney, even subsequent to building. The design recovers the max. amount of heat generated by the fire.</p> |
