本发明涉及一种加热装置，尤其是锅炉，其具有用于固体燃料的燃烧的燃烧室（1），特别是生物量，并且随后的烟道气管道（4），用于烟道气的排出，其特征在于，向烟道气管道（4）向下的热交换管（5） 冷凝热交换器打开，下端各通向冷凝物的排出区域（6）。 根据本发明，提出的是，在热交换管的内部（5）各自具有一个用于每个热交换管（5）与所述排代圆筒（14）同轴地布置被提供，并且该热交换管（5）的内表面和所述排代圆筒的外表面（14）各具有一个螺旋弹簧形的，具有间 被布置在绕组节距的执行旋流器（15），所述对应于所述卷绕间距在相应的热交换管（5）的至提升高度H的轴向位移气缸（14）和所述旋流器（15）或超出，可移动地安装。 通过这种方式，在使用冷凝热交换器的传热介质上确保了固体燃料的燃烧热的永久有效传递。

The invention relates to a heating device, in particular boiler, having a combustion chamber (1) for combustion of solid fuel, in particular biomass, and a subsequent flue gas duct (4) for the discharge of flue gases, wherein into the flue gas duct (4) downward heat exchange tubes (5) a condensing heat exchanger open, the lower ends of each open into a delivery region (6) for the condensate. According to the invention it is proposed that in the interior of the heat exchange tubes (5) each having a for each heat exchanger tube (5) arranged coaxially with the displacement cylinder (14) is provided, and between the inner surface of the heat exchanger tube (5) and the outer surface of the displacement cylinder (14) each having a helical spring-shaped with is arranged a winding pitch a executed swirler (15), said displacement cylinder (14) and said swirler (15) in the axial direction of the respective heat exchanger tube (5) to a lifting height H corresponding to the winding pitch a or exceeds, are movably mounted. In this way a permanent efficient transfer of heat of combustion of solid fuels in the heat transfer medium is ensured by means of condensing heat exchangers.