Aluminum heat exchanger
AssigneeCarrier Corporation
InventorsMark R. Jaworowski, Mary Teresa Lombardo, Michael F. Taras, Mel Woldesemayat, Stephanie Bealing, Matthew Patterson
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Abstract
A heat transfer system is disclosed that includes a heat transfer fluid circulation loop, and also a heat exchanger that includes an aluminum alloy exterior surface having thereon a top surface coat derived from a composition comprising a trivalent chromium salt and an alkali metal hexafluorozirconate.
Claims20
A heat transfer system comprising a heat transfer fluid circulation loop, comprising a heat exchanger disposed in said heat transfer fluid circulation loop, the heat exchanger comprising an aluminum alloy exterior surface having thereon a top surface coat on at least a portion of the heat exchanger derived from a composition comprising a trivalent chromium salt and an alkali metal hexafluorozirconate.
A method of producing a heat transfer system, comprising:
- contacting an aluminum alloy exterior surface of a heat exchanger with a composition comprising a trivalent chromium salt and an alkali metal hexafluorozirconate to form a top surface coat on the aluminum alloy surface;
- and
- assembling the heat exchanger comprising said top surface coat into a heat transfer fluid circulation loop.
Dependencies are inferred from the claim text.