TREATMENT OF HEAT EXCHANGER TUBE OF ABSORPTION REFRIGERATOR

摘要

PURPOSE:To improve the corrosion resistance of a heat exchanger tube of copper plated with nickel by diffusing the copper and nickel and hardening the tube by rolling or other method. CONSTITUTION:A heat exchanger tube of copper such as deoxidized copper for an absorption refrigerator using an aqueous soln. of lithium bromide or other salt is prepd. The surface of the heat exchanger tube is plated with nickel by electroless plating, electroplating or other method and the copper and nickel are diffused by heating or other method. The heat exchanger tube is then hardened by rolling, drawing or other method.