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US 5,833,450 AGranted
Recuperator and recuperator burner
AssigneeWS Warmeprozesstechnik GmbH
InventorJoachim Wunning
Life of this patent
Estimating the term…
Abstract
A ceramic recuperator (18) for a recuperator burner (1) is provided, in its heat exchanger region, with a plurality of radially inward- and outward-extending teeth. On the otherwise hollow-cylindrical recuperator (18), the teeth (19) are arranged in groups, e.g., in rings; the teeth of one ring are each offset from the teeth of an adjacent ring. Alternatively, it is possible to arrange the teeth on a single- or multi-start helical line. The recuperator can be produced economically by the slip-casting method.
Claims9
A recuperator for a recuperator burner, comprising
- a ceramic tube (8) having at least a portion or segment (18) whose wall is formed with protrusions and indentations to improve the heat transfer,
- wherein
- the protrusions are formed as hollow teeth (19), which are oriented radially, and in which a plurality of said hollow teeth are located in a longitudinal direction of the recuperator tube (8);
- the tooth height N, measured in radial direction for a given wall thickness S of the tube segment, is in a range of from 0.8 to 4 times the wall thickness S;
- the tooth length l, measured in the longitudinal direction of the tube portion or segment (18), is in a range of from 4 to 40 times the wall thickness S;
- and wherein
- the angle formed by two adjacent teeth (19) is in a range from 75.degree. to 125.degree..
4 more elements
Dependencies are inferred from the claim text.