Air preheater heat transfer surface

Details Air preheater heat transfer surface Air preheater heat transfer surface

1996-10-04

1998-09-08

Lazarus, Ira S.

Heat exchange

Regenerator

Heat collector

165 8, 165 6, F28D 1700

Patent

active

058031588

ABSTRACT:
An air preheater has heat transfer elements with a first series of corrugated elements having longitudinally oriented, mutually parallel corrugations formed generally continuously across the lateral direction. Positioned on either side of each of the corrugated elements of the first series are a series of notched plates each having mutually parallel spaced apart notches. Each notch is formed by parallel double ridges projecting transversely from opposite sides and the element has flat sections between the notches. The notches are oriented obliquely in mutually opposite directions relative to the corrugations of the adjacent elements whereby the notched elements are in contact with the corrugated elements solely at the points of intersection of the notches and corrugations. This produces an increased number of boundary layer breaks and improves heat transfer as well as providing straight line passages through the elements.

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