| 摘要 |
<p>A boiler has a waste gas pipe 18, through which hot gas is guided, which carries heat off into the water of the boiler. The waste gas pipe 18 is surrounded, at least over part of its longitudinal extent, by a jacket (20) which guides water in good heat contact with the waste gas pipe 18 and communicates with the inner space 24 of the boiler 10. For a heat yield which is as favourable as possible, it is envisaged that the inlet 26 for the cold water is arranged at the vertically upper end of the jacket (20). <IMAGE></p> |
