Micro-textured heat transfer surfaces
AssigneeAlcoa Inc.
InventorsRaymond J. Kilmer, John B. Eye, Stephen F. Baumann, Michael P. Danz
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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.
Claims14
A heat exchanger comprising:
- a metal tube having a coolant side and a fin side;
- a metal fin attached to said tube fin side;
- and
- a wrought micro-textured surface positioned on said tube coolant side, wherein said micro-textured surface has a main surface and plurality of textured features extending from said main surface at a height of about 1-50 microns.
A heat exchanger component comprising a wrought metal sheet, said sheet having a micro-textured heat transfer surface, said micro-textured surface having textured features about 20-50 microns in height, wherein said metal is an aluminum alloy of the AA series 1xxx, 2xxx, 3xxx, 4xxx, 5xxx, 6xxx, 7xxx, or 8xxx.
Dependencies are inferred from the claim text.