| 摘要 |
<p>This tower boiler (1) comprises a furnace wall (3) for forming a boiler main unit (2) and performing heat exchange with combustion gas (G) produced inside the boiler main unit (2), and a heat transfer unit positioned above the boiler main unit (2) and used for performing heat exchange with the combustion gas (G) produced inside the boiler main unit (2). The heat transfer unit comprises a plurality of superheaters (6 to 8), and the adjacent pitch (Pw) of heat transfer tubes in at least the superheaters (6, 7) positioned on the side nearest to lower part (3a) of the furnace wall among the superheaters (6 to 8) is set to be greater than the adjacent pitch (Pn) of heat transfer tubes (11) in the superheater (8) positioned on the side set at a distance from the lower part (3a) of the furnace wall.</p> |
