Aluminum heat exchanger provided with fins having hydrophilic co

Heat exchange – With coated – roughened or polished surface

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F28F 1318

Patent

active

045880255

ABSTRACT:
The fins of an aluminum heat exchanger are treated with a coating composition comprising an alkali silicate and a low-molecular-weight compound having carbonyl and are thereafter heated for drying, whereby a hydrophilic coating is formed over the surfaces of the fins.

REFERENCES:
patent: 3894578 (1975-07-01), Stoy et al.
patent: 4181773 (1980-01-01), Rickert, Jr.
patent: 4421789 (1983-12-01), Kaneko et al.

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