Air preheater heat transfer surface

Details Air preheater heat transfer surface Air preheater heat transfer surface

F - Mech Eng,Light,Heat,Weapons

28

D

F28D 19/04 (2006.01)

Patent

CA 2302246

A heat exchange element (34) for an air preheater has first and second heat transfer elements (36, 42) arranged to form channels for the passage of a heat exchange media having a main flow direction. Each of the heat exchange plates (34) has parallel straight ridges (38, 40) and flats (36) between the ridges (38, 40). The ridges (38, 40) alternate to extend transversely from opposite sides of each heat transfer plate (34). The ridges (38, 40) of the adjacent plates (34) are oriented obliquely in opposite directions relative to the main flow direction and contact each other solely at points of intersection of the ridges (38, 40).

Selon cette invention, un organe (34) d'échange thermique pour réchauffeur d'air comporte de premier et second éléments (36, 42) d'échange thermique conçus pour former des canaux permettant le passage d'un milieu d'échange thermique selon un sens d'écoulement principal. Chacune des plaques (34) d'échange thermique possède des protubérances rectilignes parallèles (38, 40) et des inclinaisons (36) positionnées entre les protubérances (38, 40). Ces protubérances (38, 40) sont alternées et s'étendent dans le sens transversal à partir de côtés opposés de chacune des plaques (34) d'échange thermique. Les protubérances (38, 40) des plaques adjacentes (34) sont orientées de manière oblique, dans des directions opposées par rapport au sens d'écoulement principal, et se touchent uniquement au niveau de points d'intersection des protubérances (38, 40).

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