HIGH-TEMPERATURE COAXIAL AIR HEATER-HEAT EXCHANGER Russian patent published in 2010 - IPC F24F3/147 

FIELD: heating.

SUBSTANCE: invention relates to air heaters with convective heat-recovery unit for high-temperature fume gases of thermal electric power stations. Proposed high-temperature coaxial air heater-heat exchanger comprises housing and channels for various-temperature airflows to pass through. In compliance with this invention, it additionally incorporates inlet branch pipe to feed in high-temperature flue gases from fluosolids furnace and outlet branch pipe to discharge flue gases. Note here that there is blast air housing arranged aligned with fume gas housing to allow airflow from blow fan to pass through branch pipe and into furnace. Note also that internal and external housings are aligned and can have various cross section shapes, for example round, square and polygonal. Outer housing is coated with heat resistant material. Mind that outer and inner surfaces of internal housing accommodate at least three radial T-section ribs.

EFFECT: higher efficiency, increased savings, simpler design, mounting and operation.

1 cl, 2 dwg