| 摘要 |
A coal-fired steam generator has tubes forming heating surfaces that are suspended above a combustion chamber from support tubes that extend in a given direction and are mutually spaced apart, transversely to the axes of the tubes forming the heating surfaces, a distance that is less than the mutual spacing of the support tubes in the direction of the axes of the tubes forming the heating surfaces. The support tubes located below the lowermost of the tubes forming the heating surfaces suspended therefrom are formed with an initial bend in a plane wherein the support tubes are mutually spaced apart by the lesser distance, and are provided with further bends forming auxiliary heating surfaces extending substantially perpendicularly to the given direction in which the support tubes extend.
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