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US 2004/0068871 A1Published application
Micro-textured heat transfer surfaces
AssigneeAlcoa Inc.
InventorsRaymond J. Kilmer, John B. Eye, Stephen F. Baumann, Michael P. Danz
Life of this patent
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Abstract
A wrought aluminum sheet product having a textured surface for improved heat transfer properties. A plurality of textured features having dimensions of about 1-50 microns is roll textured onto one or both sides of the sheet. The aluminum sheet may be used as the fins or tubing of a heat exchanger.
Claims6
A method of making a heat exchanger component comprising the steps of:
- providing a mill finished brazing sheet;
- rolling the sheet between a pair of rolls, at least one of the rolls being textured, to create textured features on at least one side of the sheet thereby increasing the surface area of the textured side of the sheet;
- and
- forming the textured sheet into a heat exchanger component, wherein at least one heat transfer surface of the heat exchanger component includes the textured features.
1 more element
Dependencies are inferred from the claim text.