Process for making a heater exchanger

摘要: A heat exchanger having an outer shell which is long as compared with its diameter and a helical double-walled finned volute member wound to small around core member, the proportions being such that fins on touch inside of convolutions outside convolutions. The tube comprises wall extends through so any leakage into space between inner tubes will be discharged shell. process by made includes steps inserting in length tube, winding them central therein, installing these members spinning closed seal ends tubing member.