| 摘要 |
In order to improve the cleaning of the heating surfaces in the case of a heat exchanger which is heated by gases containing dust, the heating surfaces are produced from U-shaped or meandering tubes, and a plurality of such tube panels (6) are arranged juxtaposed in a vertical gas flue. The tube panels (6) are supported by cooled retaining tubes (7) which are arranged in the middle region of the gas flue and are elastically connected to their distributors (4') and headers (5'), so that they can be set vibrating via a device. <IMAGE>
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