| 摘要 |
A preheating device (1 ) for combustion air in a boiler, the device comprising first heat exchanger structures fitted in a flue gas duct (2), for heating primary air (P), a first air supply area (5) in the wall of the flue gas duct (2), for supplying air to be heated to the first heat exchanger structures, second heat exchanger structures fitted in a flue gas duct (2), for heating secondary air (S), as well as a second air supply area (6) in the wall of the flue gas duct (2), for supplying air to be heated to the second heat exchanger structures. The first air supply area (5) is opposite the second air supply area (6). The invention also relates to a power plant. |
