Hydrophilic fins for a heat exchanger

Details Hydrophilic fins for a heat exchanger Hydrophilic fins for a heat exchanger

F - Mech Eng,Light,Heat,Weapons

28

F

257/23

F28F 13/18 (2006.01) F28F 19/02 (2006.01)

Patent

CA 1238037

ABSTRACT OF THE DISCLOSURE A fin for a heat exchanger which is highly hydrophilic and rustproof comprises a substrate of aluminum or an aluminum alloy having thereon a hydrophilic coat including therein a pro- teinaceous substance having a peptide bond, e.g., gelatin. Fur- ther enhancement of the fin's affinity for water is obtained by using a hydrophilic coat prepared by mixing a water soluble coat- ing material, such as acrylic paint, with the proteinaceous sub- stance. The coat is made by applying a water-based coating composition including the proteinaceous substance to a substrate and drying it in the temperature range of 100° to 250°C, and preferably 180° to 220°C.

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