Method of corrosion prevention of copper pipe of heat exchanger, heat exchanger and corrosion prevention method by this method

摘要

PROBLEM TO BE SOLVED: To provide a corrosion prevention method for a copper pipe of heat transfer equipment, and the like, which can simply prevent corrosion of a plurality of folded parts of a heat exchanger.SOLUTION: In a corrosion prevention method for a copper pipe 15 of heat transfer equipment comprising heat exchangers 11 and 12 having a plurality of folded parts 19 and 22 configured by folding back the copper pipe 15 through which a heat exchange medium is passed, a resin foam is sprayed on the plurality of folded parts 19 and 22 of the heat exchanger and solidified to prevent the corrosion of the folded parts 19 and 22.